CN111800247A - Information transmission method and device - Google Patents

Abstract

The embodiment of the invention provides an information transmission method and device. The information transmission method provided by the invention comprises the following steps: the second network equipment selects one of at least two candidate demodulation pilot frequency patterns with the same port number, and maps the demodulation pilot frequency signals to the candidate demodulation pilot frequency patterns, wherein the port number is equal to the layer number of the data stream; wherein the at least two candidate demodulation pilot patterns with the same port number are different, and at least one of the candidate demodulation pilot patterns contains physical Resource Elements (REs) occupied by non-zero power demodulation pilot signals and physical Resource Elements (REs) occupied by zero power demodulation pilot signals; and the second network equipment sends the mapped demodulation pilot signal and the configuration information of the demodulation pilot signal to the first network equipment. The embodiment of the invention realizes the configuration of different demodulation pilot frequency patterns for different first network equipment, avoids the interference to other first network equipment and increases the number of multiplexing users.

Description

Information transmission method and device

technical field

Embodiments of the present invention relate to communication technologies, and in particular, to an information transmission method and apparatus.

Background technique

3D multi-antenna technologies such as dynamic three-dimensional (3D) beamforming technology have attracted the attention of the industry as a key technology to improve the throughput rate of cell edge users, the total throughput rate of cell users and the average throughput rate. According to the 3D channel information estimated by the user end, adjust the 3D beamforming weight of the active antenna end, so that the main lobe of the beam is "aligned" with the target user in the 3D space, which can greatly improve the received signal power and improve the signal interference noise. ratio, thereby improving the throughput of the entire system. The 3D beamforming technology needs to be based on an active antenna system (Active Antenna Systems, AAS for short). Compared with the traditional antenna, the active antenna AAS further provides a degree of freedom in the vertical direction. The multi-user multiple-input multiple-output (MU MIMO) technology means that multiple users can reuse the same time-frequency resources and distinguish them spatially through different beamforming weights. Due to the introduction of 3D beamforming technology, the number of spatially multiplexed users increases.

In the long term evolution (Long Term Evolution, LTE for short) system in the prior art, the configuration of the demodulation reference signal (demodulation reference signal, DMRS for short) only considers the support of a maximum of 4 paired users. FIG. 1 is a schematic diagram of a demodulation pilot signal configuration in the prior art. As shown in FIG. 1 , a physical resource block pair (Physical Resource Block pair, PRB pair for short) includes: 12*14 physical resource elements (Resource Elements, RE for short), 12 demodulation pilot subcarriers, 2 time slots, each time slot has 7 OFDM symbols, the horizontal axis represents time t, and the vertical axis represents frequency f. The RE where the DMRS is located is where the gray shaded RE is located in the figure. The REs in the slashed part represent common pilots (Common reference signal, CRS for short), wherein, there are 4 users performing MU MIMO multiplexing, UE1, UE2, UE3, and UE4. The multiplexing of DMRS adopts the combination of different orthogonal spreading codes and different scrambling codes. Orthogonal spreading codes are applied to REs where two adjacent OFDM symbols of the DMRS are located. UE1 uses orthogonal spreading code (1,1), and the scrambling code is generated by nscid0; UE2 uses orthogonal spreading code (1,-1), and the same scrambling code is generated by nscid0; therefore, UE1 and UE2 are completely orthogonal (in the first The above-mentioned orthogonal spreading code and scrambling code are also used in the two time slots). UE3 uses the orthogonal spreading code (1,1), and the scrambling code is generated by nscid1; UE4 uses the orthogonal spreading code (1,-1), and the scrambling code is also generated by nscid1; therefore, UE3 and UE4 are completely orthogonal. The multiplexing method is the same in the two time slots.

The problem existing in the prior art is that the configuration of the DMRS cannot meet the pilot frequency multiplexing of the increased users.

SUMMARY OF THE INVENTION

Embodiments of the present invention provide an information transmission method and apparatus, so as to overcome the problem that the configuration of the DMRS in the prior art cannot meet the pilot frequency multiplexing of increased users.

In a first aspect, an embodiment of the present invention provides an information transmission method, including:

The second network device determines one of at least two candidate demodulation pilot patterns with the same number of ports, and maps the demodulation pilot signal to the time-frequency resource corresponding to the demodulation pilot pattern, where the number of ports is equal to The number of layers of the data flow;

Wherein, the at least two candidate demodulation pilot patterns with the same number of ports are different, and at least one of the candidate demodulation pilot patterns includes physical resource elements RE occupied by non-zero power demodulation pilot signals and zero power demodulation pilot patterns. the physical resource unit RE occupied by the modulation pilot signal;

The second network device sends the mapped demodulation pilot signal and configuration information of the demodulation pilot signal to the first network device.

With reference to the first aspect, in a first implementation manner of the first aspect, the at least two candidate demodulation pilot patterns with the same number of ports are different, including:

In at least one candidate demodulation pilot pattern, the position of the RE occupied by the non-zero-power demodulation pilot signal corresponds to the position of the RE occupied by the zero-power demodulation pilot signal in the remaining at least one candidate pilot pattern .

With reference to the first aspect, in a second implementation manner of the first aspect, the at least two candidate demodulation pilot patterns with the same number of ports are different, including:

In at least one candidate demodulation pilot pattern, the positions of the REs occupied by all the non-zero-power demodulation pilot signals and the positions of the REs occupied by all the zero-power demodulation pilot signals correspond to the remaining at least one candidate pilot. In the pattern, the position of the RE occupied by the non-zero power demodulation pilot signal.

With reference to the first aspect or the first implementation manner of the first aspect, in a third implementation manner of the first aspect, in at least one candidate demodulation pilot pattern, at least one of the non-zero power demodulation pilot signals The occupied time interval is different from the time interval occupied by the at least one zero-power demodulation pilot signal, and the frequency bandwidth occupied by the non-zero-power demodulation pilot signal is also different from the frequency bandwidth occupied by the zero-power demodulation pilot signal.

With reference to the first aspect, or the first and third implementation manners of the first aspect, in a fourth implementation manner of the first aspect, in at least one candidate demodulation pilot pattern, all the non-zero power demodulation pilot patterns The time interval occupied by the frequency signal is different from the time interval occupied by all zero-power demodulation pilot signals.

With reference to the first aspect, or the first and third implementation manners of the first aspect, in a fifth implementation manner of the first aspect, in at least one candidate demodulation pilot pattern, all the non-zero power demodulation pilot patterns The frequency bandwidth occupied by the frequency signal is different from the frequency bandwidth occupied by all zero-power demodulation pilot signals.

With reference to the first aspect or the first implementation manner of the first aspect, in a sixth implementation manner of the first aspect, in at least one candidate demodulation pilot pattern, the non-zero power demodulation pilot signal and zero The time intervals occupied by the power demodulation pilot signals in the frequency bandwidth where the adjacent demodulation pilot signals are located are different; the time interval is the first time interval; and/or,

In at least one candidate demodulation pilot pattern, the non-zero-power demodulation pilot signal and the zero-power demodulation pilot signal occupy different frequency bandwidths in the time interval where the adjacent demodulation pilot signals are located; the The time interval is the first time interval.

With reference to any one of the third to sixth implementation manners of the first aspect, in a seventh implementation manner of the first aspect, in at least one candidate demodulation pilot pattern, all the non-zero power demodulation pilot signals occupy The time interval is the same; the time interval is the first time interval.

With reference to the seventh implementation manner of the first aspect, in an eighth implementation manner of the first aspect, in at least one candidate demodulation pilot pattern, the non-zero power demodulation pilot signal within the same time interval occupies The frequency bandwidths of the frequency bands are distributed at equal intervals within the first frequency bandwidth; the time interval is a second time interval, and the second time interval is a time interval smaller than the first time interval.

With reference to any one of the third to sixth implementation manners of the first aspect, in a ninth implementation manner of the first aspect, in at least one candidate demodulation pilot pattern, the non-zero power demodulation pilot signal occupies the The frequency bandwidth is the same.

With reference to the ninth implementation manner of the first aspect, in a tenth implementation manner of the first aspect, in at least one candidate demodulation pilot pattern, the non-zero power demodulation pilot signal within the same frequency bandwidth occupies The time intervals are distributed at equal intervals within the third time interval; the third time interval is a time interval larger than the first time interval.

With reference to any one of the third to sixth implementation manners of the first aspect, in an eleventh implementation manner of the first aspect, in at least one candidate demodulation pilot pattern, the non-zero power demodulation pilot signal is The time intervals occupied by adjacent demodulation pilot signals in the frequency bandwidth are different; the time interval is the first time interval; and/or,

In at least one candidate demodulation pilot pattern, the non-zero-power demodulation pilot signals occupy different frequency bandwidths in time intervals where adjacent demodulation pilot signals are located; the time interval is the first time interval.

With reference to the eleventh implementation manner of the first aspect, in the twelfth implementation manner of the first aspect, in at least one candidate demodulation pilot pattern, the time interval occupied by the non-zero power demodulation pilot signal, etc. Spaced distribution, the occupied frequency bandwidth is distributed at equal intervals.

With reference to any one of the third to sixth implementation manners of the first aspect, in a thirteenth implementation manner of the first aspect, in at least one candidate demodulation pilot pattern, all the zero-power demodulation pilot signals occupy The time interval is the same; the time interval is the first time interval.

With reference to the thirteenth implementation manner of the first aspect, in the fourteenth implementation manner of the first aspect, in at least one candidate demodulation pilot pattern, the zero-power demodulation pilot signal within the same time interval The occupied frequency bandwidth is distributed at equal intervals within the first frequency bandwidth, the time interval is a second time interval, and the second time interval is a time interval smaller than the first time interval.

With reference to any one of the third to sixth implementation manners of the first aspect, in a fifteenth implementation manner of the first aspect, in at least one candidate demodulation pilot pattern, the zero-power demodulation pilot signal occupies the The frequency bandwidth is the same.

With reference to the fifteenth implementation manner of the first aspect, in the sixteenth implementation manner of the first aspect, in at least one candidate demodulation pilot pattern, the zero-power demodulation pilot signal within the same frequency bandwidth The occupied time intervals are distributed at equal intervals in a third time interval; the third time interval is a time interval larger than the first time interval.

With reference to any one of the third to sixth implementation manners of the first aspect, in a seventeenth implementation manner of the first aspect, in at least one candidate demodulation pilot pattern, the zero-power demodulation pilot signal is in phase The time intervals occupied by adjacent demodulation pilot signals are different in the frequency bandwidth; the time interval is the first time interval; and/or,

In at least one candidate demodulation pilot pattern, the zero-power demodulation pilot signals occupy different frequency bandwidths in time intervals occupied by adjacent demodulation pilot signals; the time interval is the first time interval.

With reference to the seventeenth implementation manner of the first aspect, in the eighteenth implementation manner of the first aspect, in at least one candidate demodulation pilot pattern, the time intervals occupied by the zero-power demodulation pilot signals are equally spaced. distribution, the occupied frequency bandwidth is equally spaced.

With reference to any one of the implementation manners of the third to eighteenth aspects of the first aspect, in a nineteenth implementation manner of the first aspect, the time interval includes a time length of a unit subframe, a time length of a unit time slot, Or the time length of a unit OFDM symbol.

With reference to any one of the implementation manners of the third to eighteenth aspects of the first aspect, in a twentieth implementation manner of the first aspect, the frequency bandwidth includes a frequency width of a unit subcarrier or a width of a unit physical resource block PRB. The width of the frequency.

With reference to the first aspect, or any one of the first to twentieth implementation manners of the first aspect, in a twenty-first implementation manner of the first aspect, the at least two candidate pilot patterns use dynamic signaling or The high-layer signaling is sent to the first network device.

With reference to the twenty-first implementation manner of the first aspect, in the twenty-second implementation manner of the first aspect, the dynamic signaling or high-layer signaling is cell-specific; or,

The dynamic signaling or higher layer signaling is user group specific; or,

The dynamic signaling or higher layer signaling is user specific.

With reference to the first aspect, or any one of the first to twenty-second implementation manners of the first aspect, in the twenty-third implementation manner of the first aspect, one of the at least two candidate pilot patterns is The pilot pattern is sent to the first network device through dynamic signaling or high-layer signaling.

In a second aspect, an embodiment of the present invention provides an information transmission method, including:

The first network device obtains a demodulation pilot pattern according to the received demodulation pilot configuration information, and receives a demodulation pilot signal according to the corresponding demodulation pilot pattern; the demodulation pilot pattern is at least two one of the candidate demodulation pilot patterns with the same number of ports, the number of ports being equal to the number of layers of the data stream;

Wherein, the at least two candidate demodulation pilot patterns with the same number of ports are different, and at least one of the candidate demodulation pilot patterns includes physical resource elements RE occupied by non-zero power demodulation pilot signals and zero power demodulation pilot patterns. The physical resource unit RE occupied by the modulation pilot signal.

With reference to the second aspect, in a first implementation manner of the second aspect, the at least two candidate demodulation pilot patterns with the same number of ports are different, including:

In at least one candidate demodulation pilot pattern, the position of the RE occupied by the non-zero-power demodulation pilot signal corresponds to the position of the RE occupied by the zero-power demodulation pilot signal in the remaining at least one candidate pilot pattern .

With reference to the second aspect, in a second implementation manner of the second aspect, the at least two candidate demodulation pilot patterns with the same number of ports are different, including:

In at least one candidate demodulation pilot pattern, the positions of the REs occupied by all the non-zero-power demodulation pilot signals and the positions of the REs occupied by all the zero-power demodulation pilot signals correspond to the remaining at least one candidate pilot pattern The position of the RE occupied by the non-zero power demodulation pilot signal in .

With reference to the second aspect or the first implementation manner of the second aspect, in a third implementation manner of the second aspect, in at least one candidate demodulation pilot pattern, at least one of the non-zero power demodulation pilot signals The occupied time interval is different from the time interval occupied by the at least one zero-power demodulation pilot signal, and the frequency bandwidth occupied by the non-zero-power demodulation pilot signal is also different from the frequency bandwidth occupied by the zero-power demodulation pilot signal.

With reference to the second aspect, or the first and third implementation manners of the second aspect, in a fourth implementation manner of the second aspect, in at least one candidate demodulation pilot pattern, all the non-zero power demodulation pilot patterns The time interval occupied by the frequency signal is different from the time interval occupied by all zero-power demodulation pilot signals.

With reference to the second aspect, or the first and third implementation manners of the second aspect, in a fifth implementation manner of the second aspect, in at least one candidate demodulation pilot pattern, all the non-zero power demodulation pilot patterns The frequency bandwidth occupied by the frequency signal is different from the frequency bandwidth occupied by all zero-power demodulation pilot signals.

With reference to the second aspect or the first implementation manner of the second aspect, in a sixth implementation manner of the second aspect, in at least one candidate demodulation pilot pattern, the non-zero power demodulation pilot signal and zero The time intervals occupied by the power demodulation pilot signals in the frequency bandwidth where the adjacent demodulation pilot signals are located are different; the time interval is the first time interval; and/or,

In at least one candidate demodulation pilot pattern, the non-zero-power demodulation pilot signal and the zero-power demodulation pilot signal occupy different frequency bandwidths in the time interval where the adjacent demodulation pilot signals are located; the The time interval is the first time interval.

With reference to any one of the third to sixth implementation manners of the second aspect, in a seventh implementation manner of the second aspect, in at least one candidate demodulation pilot pattern, all the non-zero power demodulation pilot signals occupy The time interval is the same; the time interval is the first time interval.

With reference to the seventh implementation manner of the second aspect, in an eighth implementation manner of the second aspect, in at least one candidate demodulation pilot pattern, the non-zero power demodulation pilot signal within the same time interval occupies The frequency bandwidths of the frequency bands are distributed at equal intervals within the first frequency bandwidth; the time interval is a second time interval, and the second time interval is a time interval smaller than the first time interval.

With reference to any one of the third to sixth implementation manners of the second aspect, in a ninth implementation manner of the second aspect, in at least one candidate demodulation pilot pattern, the non-zero power demodulation pilot signal occupies the The frequency bandwidth is the same.

With reference to the ninth implementation manner of the second aspect, in a tenth implementation manner of the second aspect, in at least one candidate demodulation pilot pattern, the non-zero power demodulation pilot signal within the same frequency bandwidth occupies The time intervals are distributed at equal intervals within the third time interval; the third time interval is a time interval larger than the first time interval.

With reference to any one of the third to sixth implementation manners of the second aspect, in an eleventh implementation manner of the second aspect, in at least one candidate demodulation pilot pattern, the non-zero power demodulation pilot signal is The time intervals occupied by adjacent demodulation pilot signals in the frequency bandwidth are different; the time interval is the first time interval; and/or,

In at least one candidate demodulation pilot pattern, the non-zero-power demodulation pilot signals occupy different frequency bandwidths in time intervals where adjacent demodulation pilot signals are located; the time interval is the first time interval.

With reference to the eleventh implementation manner of the second aspect, in at least one candidate demodulation pilot pattern in the twelfth implementation manner of the second aspect, the time intervals occupied by the non-zero power demodulation pilot signals are equally spaced distribution, the occupied frequency bandwidth is equally spaced.

With reference to any one of the third to sixth implementation manners of the second aspect, in a thirteenth implementation manner of the second aspect, in at least one candidate demodulation pilot pattern, all the zero-power demodulation pilot signals occupy The time interval is the same; the time interval is the first time interval.

With reference to the thirteenth implementation manner of the second aspect, in the fourteenth implementation manner of the second aspect, in at least one candidate demodulation pilot pattern, the zero-power demodulation pilot signal within the same time interval The occupied frequency bandwidth is distributed at equal intervals within the first frequency bandwidth, the time interval is a second time interval, and the second time interval is a time interval smaller than the first time interval.

With reference to any one of the third to sixth implementation manners of the second aspect, in a fifteenth implementation manner of the second aspect, in at least one candidate demodulation pilot pattern, the zero-power demodulation pilot signal occupies the The frequency bandwidth is the same.

With reference to the fifteenth implementation manner of the second aspect, in the sixteenth implementation manner of the second aspect, in at least one candidate demodulation pilot pattern, the zero-power demodulation pilot signal within the same frequency bandwidth occupies The time intervals are distributed at equal intervals within the third time interval; the third time interval is a time interval larger than the first time interval.

With reference to any one of the third to sixth implementation manners of the second aspect, in a seventeenth implementation manner of the second aspect, in at least one candidate demodulation pilot pattern, the zero-power demodulation pilot signal is in phase The time intervals occupied by adjacent demodulation pilot signals are different in the frequency bandwidth; the time interval is the first time interval; and/or,

In at least one candidate demodulation pilot pattern, the zero-power demodulation pilot signals occupy different frequency bandwidths in time intervals occupied by adjacent demodulation pilot signals; the time interval is the first time interval.

With reference to the seventeenth implementation manner of the second aspect, in the eighteenth implementation manner of the second aspect, in at least one candidate demodulation pilot pattern, the time intervals occupied by the zero-power demodulation pilot signals are equally spaced. distribution, the occupied frequency bandwidth is equally spaced.

With reference to any one of the implementation manners of the third to eighteenth aspects of the second aspect, in a nineteenth implementation manner of the second aspect, the time interval includes a time length of a unit subframe, a time length of a unit time slot, Or the time length of a unit OFDM symbol.

With reference to any one of the implementation manners of the third to eighteenth aspects of the second aspect, in a twentieth implementation manner of the second aspect, the frequency bandwidth includes the frequency width of the unit subcarrier or the width of the unit physical resource block PRB. The width of the frequency.

With reference to the second aspect, or any one of the third to twentieth implementation manners of the second aspect, in a 21st implementation manner of the second aspect, the first network device receives the second network device through dynamic signaling or The at least two candidate pilot patterns sent by higher layer signaling.

With reference to the twenty-first implementation manner of the second aspect, in a twenty-second implementation manner of the second aspect, the first network device is a user equipment, and the second network device is a base station; or,

The first network device is user equipment, and the second network device is user equipment; or,

The first network device is a network device, and the second network device is a network device.

With reference to the twenty-first implementation manner of the second aspect, in the twenty-third implementation manner of the second aspect, the dynamic signaling or high-layer signaling is cell-specific; or,

The dynamic signaling or higher layer signaling is user group specific; or,

The dynamic signaling or higher layer signaling is user specific.

With reference to the second aspect, or any one of the first to twenty-third implementation manners of the second aspect, in a twenty-fourth implementation manner of the second aspect, the first network device receives the second network device One pilot pattern among the at least two candidate pilot patterns sent through dynamic signaling or higher layer signaling.

In a third aspect, an embodiment of the present invention provides an information transmission device, including:

a mapping module, configured to determine one of at least two candidate demodulation pilot patterns with the same number of ports, and map the demodulation pilot signal to the time-frequency resource corresponding to the demodulation pilot pattern, the port number is equal to the number of layers of the data stream;

Wherein, the at least two candidate demodulation pilot patterns with the same number of ports are different, and at least one of the candidate demodulation pilot patterns includes physical resource elements RE occupied by non-zero power demodulation pilot signals and zero power demodulation pilot patterns. the physical resource unit RE occupied by the modulation pilot signal;

The sending module is configured to send the mapped demodulation pilot signal and the configuration information of the demodulation pilot signal to the first network device.

With reference to the third aspect, in a first implementation manner of the third aspect, the at least two candidate demodulation pilot patterns with the same number of ports are different, including:

In at least one candidate demodulation pilot pattern, the position of the RE occupied by the non-zero-power demodulation pilot signal corresponds to the position of the RE occupied by the zero-power demodulation pilot signal in the remaining at least one candidate pilot pattern .

With reference to the third aspect, in a second implementation manner of the third aspect, the at least two candidate demodulation pilot patterns with the same number of ports are different, including:

In at least one candidate demodulation pilot pattern, the positions of the REs occupied by all the non-zero-power demodulation pilot signals and the positions of the REs occupied by all the zero-power demodulation pilot signals correspond to the remaining at least one candidate pilot. In the pattern, the position of the RE occupied by the non-zero power demodulation pilot signal.

In combination with the third aspect or the first implementation manner of the third aspect, in a third implementation manner of the third aspect, in at least one candidate demodulation pilot pattern, at least one of the non-zero power demodulation pilot patterns The time interval occupied by the signal is different from the time interval occupied by the at least one zero-power demodulation pilot signal, and the frequency bandwidth occupied by the non-zero-power demodulation pilot signal is also different from the frequency bandwidth occupied by the zero-power demodulation pilot signal .

With reference to the third aspect, or the first and third implementation manners of the third aspect, in a fourth implementation manner of the third aspect, in at least one candidate demodulation pilot pattern, all the non-zero power demodulation pilot patterns The time interval occupied by the frequency signal is different from the time interval occupied by all zero-power demodulation pilot signals.

With reference to the third aspect, or the first and third implementation manners of the third aspect, in a fifth implementation manner of the third aspect, in at least one candidate demodulation pilot pattern, all the non-zero power demodulation pilot patterns The frequency bandwidth occupied by the frequency signal is different from the frequency bandwidth occupied by all zero-power demodulation pilot signals.

With reference to the third aspect or the first implementation manner of the third aspect, in a sixth implementation manner of the third aspect, in at least one candidate demodulation pilot pattern, the non-zero power demodulation pilot signal and zero The time intervals occupied by the power demodulation pilot signals in the frequency bandwidth where the adjacent demodulation pilot signals are located are different; the time interval is the first time interval; and/or,

In at least one candidate demodulation pilot pattern, the non-zero-power demodulation pilot signal and the zero-power demodulation pilot signal occupy different frequency bandwidths in the time interval where the adjacent demodulation pilot signals are located; the The time interval is the first time interval.

With reference to the third aspect or any one of the first to third implementation manners of the third aspect, in a seventh implementation manner of the third aspect, in at least one candidate demodulation pilot pattern, all the non-zero power solutions The time intervals occupied by the modulation pilot signals are the same; the time interval is the first time interval.

With reference to the seventh implementation manner of the third aspect, in an eighth implementation manner of the third aspect, in at least one candidate demodulation pilot pattern, the non-zero power demodulation pilot signal within the same time interval occupies The frequency bandwidths of the frequency bands are distributed at equal intervals within the first frequency bandwidth; the time interval is a second time interval, and the second time interval is a time interval smaller than the first time interval.

With reference to the third aspect, or any one of the first to third implementation manners of the third aspect, in a ninth implementation manner of the third aspect, in at least one candidate demodulation pilot pattern, the non-zero power demodulation The frequency bandwidth occupied by the pilot signal is the same.

With reference to the ninth implementation manner of the third aspect, in a tenth implementation manner of the third aspect, in at least one candidate demodulation pilot pattern, the non-zero power demodulation pilot signal within the same frequency bandwidth occupies The time intervals are distributed at equal intervals within the third time interval; the third time interval is a time interval larger than the first time interval.

With reference to the third aspect, or any one of the first to third implementation manners of the third aspect, in an eleventh implementation manner of the third aspect, in at least one candidate demodulation pilot pattern, the non-zero power solution The time intervals occupied by the modulation pilot signals on the frequency bandwidths where the adjacent demodulation pilot signals are located are different; the time interval is the first time interval; and/or,

In at least one candidate demodulation pilot pattern, the non-zero-power demodulation pilot signals occupy different frequency bandwidths in time intervals where adjacent demodulation pilot signals are located; the time interval is the first time interval.

With reference to the eleventh implementation manner of the third aspect, in the twelfth implementation manner of the third aspect, in at least one candidate demodulation pilot pattern, the time interval occupied by the non-zero power demodulation pilot signal, etc. Spaced distribution, the occupied frequency bandwidth is distributed at equal intervals.

With reference to the third aspect, or any one of the first to third implementation manners of the third aspect, in a thirteenth implementation manner of the third aspect, in at least one candidate demodulation pilot pattern, all the zero-power solution The time intervals occupied by the modulation pilot signals are the same; the time interval is the first time interval.

With reference to the thirteenth implementation manner of the third aspect, in the fourteenth implementation manner of the third aspect, in at least one candidate demodulation pilot pattern, the zero-power demodulation pilot signal within the same time interval The occupied frequency bandwidth is distributed at equal intervals within the first frequency bandwidth, the time interval is a second time interval, and the second time interval is a time interval smaller than the first time interval.

With reference to the third aspect, or any one of the first to third implementation manners of the third aspect, in a fifteenth implementation manner of the third aspect, in at least one candidate demodulation pilot pattern, the zero-power demodulation The frequency bandwidth occupied by the pilot signal is the same.

With reference to the fifteenth implementation manner of the third aspect, in the sixteenth implementation manner of the third aspect, in at least one candidate demodulation pilot pattern, the zero-power demodulation pilot signal within the same frequency bandwidth The occupied time intervals are distributed at equal intervals in a third time interval; the third time interval is a time interval larger than the first time interval.

With reference to the third aspect, or any one of the first to third implementation manners of the third aspect, in a seventeenth implementation manner of the third aspect, in at least one candidate demodulation pilot pattern, the zero-power demodulation The time intervals occupied by the pilot signals in the frequency bandwidth occupied by adjacent demodulation pilot signals are different; the time interval is the first time interval; and/or,

In at least one candidate demodulation pilot pattern, the zero-power demodulation pilot signals occupy different frequency bandwidths in time intervals occupied by adjacent demodulation pilot signals; the time interval is the first time interval.

With reference to the seventeenth implementation manner of the third aspect, in the eighteenth implementation manner of the third aspect, in at least one candidate demodulation pilot pattern, the time intervals occupied by the zero-power demodulation pilot signals are equally spaced. distribution, the occupied frequency bandwidth is equally spaced.

With reference to any one of the implementation manners of the third to eighteenth aspects of the third aspect, in a nineteenth implementation manner of the third aspect, the time interval includes a time length of a unit subframe, a time length of a unit time slot, Or the time length of a unit OFDM symbol.

With reference to any one of the implementation manners of the third to eighteenth aspects of the third aspect, in a twentieth implementation manner of the third aspect, the frequency bandwidth includes a frequency width of a unit subcarrier or a frequency of a physical resource block PRB width.

With reference to the third aspect, or any one of the first to twentieth implementation manners of the third aspect, in a twenty-first implementation manner of the third aspect, the at least two candidate pilot patterns use dynamic signaling or The high-layer signaling is sent to the first network device.

With reference to the twenty-first implementation manner of the third aspect, in the twenty-second implementation manner of the third aspect, the dynamic signaling or high-layer signaling is cell-specific; or,

The dynamic signaling or higher layer signaling is user group specific; or,

The dynamic signaling or higher layer signaling is user specific.

With reference to the third aspect, or any one of the first to twenty-second implementation manners of the third aspect, in a twenty-third implementation manner of the third aspect, one of the at least two candidate pilot patterns is The pilot pattern is sent to the first network device through dynamic signaling or high-layer signaling.

In a fourth aspect, an embodiment of the present invention provides an information transmission device, including:

an acquisition module, configured to obtain a demodulation pilot pattern according to the received demodulation pilot configuration information, and receive a demodulation pilot signal according to the corresponding demodulation pilot pattern; the demodulation pilot pattern is at least two one of the candidate demodulation pilot patterns with the same number of ports equal to the number of layers of the data stream;

Wherein, the at least two candidate demodulation pilot patterns with the same number of ports are different, and at least one of the candidate demodulation pilot patterns includes physical resource elements RE occupied by non-zero power demodulation pilot signals and zero power demodulation pilot patterns. The physical resource unit RE occupied by the modulation pilot signal.

With reference to the fourth aspect, in a first implementation manner of the fourth aspect, the at least two candidate demodulation pilot patterns with the same number of ports are different, including:

In at least one candidate demodulation pilot pattern, the position of the RE occupied by the non-zero-power demodulation pilot signal corresponds to the position of the RE occupied by the zero-power demodulation pilot signal in the remaining at least one candidate pilot pattern .

With reference to the fourth aspect, in a second implementation manner of the fourth aspect, the at least two candidate demodulation pilot patterns with the same number of ports are different, including:

In at least one candidate demodulation pilot pattern, the positions of the REs occupied by all the non-zero-power demodulation pilot signals and the positions of the REs occupied by all the zero-power demodulation pilot signals correspond to the remaining at least one candidate pilot. In the pattern, the position of the RE occupied by the non-zero power demodulation pilot signal.

With reference to the fourth aspect or the first implementation manner of the fourth aspect, in a third implementation manner of the fourth aspect, in at least one candidate demodulation pilot pattern, at least one of the non-zero power demodulation pilot signals The occupied time interval is different from the time interval occupied by the at least one zero-power demodulation pilot signal, and the frequency bandwidth occupied by the non-zero-power demodulation pilot signal is also different from the frequency bandwidth occupied by the zero-power demodulation pilot signal.

With reference to the fourth aspect, or the first and third implementation manners of the fourth aspect, in a fourth implementation manner of the fourth aspect, in at least one candidate demodulation pilot pattern, all the non-zero power demodulation pilot patterns The time interval occupied by the frequency signal is different from the time interval occupied by all zero-power demodulation pilot signals.

With reference to the fourth aspect, or the first and third implementation manners of the fourth aspect, in a fifth implementation manner of the fourth aspect, in at least one candidate demodulation pilot pattern, all the non-zero power demodulation pilot patterns The frequency bandwidth occupied by the frequency signal is different from the frequency bandwidth occupied by all zero-power demodulation pilot signals.

With reference to the fourth aspect or the first implementation manner of the fourth aspect, in a sixth implementation manner of the fourth aspect, in at least one candidate demodulation pilot pattern, the non-zero power demodulation pilot signal and the zero-power demodulation pilot signal The time intervals occupied by the power demodulation pilot signals in the frequency bandwidth where the adjacent demodulation pilot signals are located are different; the time interval is the first time interval; and/or,

In at least one candidate demodulation pilot pattern, the non-zero-power demodulation pilot signal and the zero-power demodulation pilot signal occupy different frequency bandwidths in the time interval where the adjacent demodulation pilot signals are located; the The time interval is the first time interval.

With reference to any one of the third to sixth implementation manners of the fourth aspect, in a seventh implementation manner of the fourth aspect, in at least one candidate demodulation pilot pattern, all the non-zero power demodulation pilot signals occupy The time interval is the same; the time interval is the first time interval.

With reference to the seventh implementation manner of the fourth aspect, in an eighth implementation manner of the fourth aspect, in at least one candidate demodulation pilot pattern, the non-zero power demodulation pilot signal within the same time interval occupies The frequency bandwidths of the frequency bands are distributed at equal intervals within the first frequency bandwidth; the time interval is a second time interval, and the second time interval is a time interval smaller than the first time interval.

With reference to any one of the third to sixth implementation manners of the fourth aspect, in a ninth implementation manner of the fourth aspect, in at least one candidate demodulation pilot pattern, the non-zero power demodulation pilot signal occupies a The frequency bandwidth is the same.

With reference to the ninth implementation manner of the fourth aspect, in a tenth implementation manner of the fourth aspect, in at least one candidate demodulation pilot pattern, the non-zero power demodulation pilot signal within the same frequency bandwidth occupies The time intervals are distributed at equal intervals within the third time interval; the third time interval is a time interval larger than the first time interval.

With reference to any one of the third to sixth implementation manners of the fourth aspect, in an eleventh implementation manner of the fourth aspect, in at least one candidate demodulation pilot pattern, the non-zero power demodulation pilot signal is The time intervals occupied by adjacent demodulation pilot signals in the frequency bandwidth are different; the time interval is the first time interval; and/or,

In at least one candidate demodulation pilot pattern, the non-zero-power demodulation pilot signals occupy different frequency bandwidths in time intervals where adjacent demodulation pilot signals are located; the time interval is the first time interval.

With reference to the eleventh implementation manner of the fourth aspect, in at least one candidate demodulation pilot pattern in the twelfth implementation manner of the fourth aspect, the time intervals occupied by the non-zero power demodulation pilot signals are equally spaced distribution, the occupied frequency bandwidth is equally spaced.

With reference to any one of the third to sixth implementation manners of the fourth aspect, in a thirteenth implementation manner of the fourth aspect, in at least one candidate demodulation pilot pattern, all the zero-power demodulation pilot signals occupy The time interval is the same; the time interval is the first time interval.

With reference to the thirteenth implementation manner of the fourth aspect, in the fourteenth implementation manner of the fourth aspect, in at least one candidate demodulation pilot pattern, the zero-power demodulation pilot signal within the same time interval The occupied frequency bandwidth is distributed at equal intervals within the first frequency bandwidth, the time interval is a second time interval, and the second time interval is a time interval smaller than the first time interval.

With reference to any one of the third to sixth implementation manners of the fourth aspect, in a fifteenth implementation manner of the fourth aspect, in at least one candidate demodulation pilot pattern, the zero-power demodulation pilot signal occupies the The frequency bandwidth is the same.

With reference to the fifteenth implementation manner of the fourth aspect, in the sixteenth implementation manner of the fourth aspect, in at least one candidate demodulation pilot pattern, the zero-power demodulation pilot signal within the same frequency bandwidth occupies The time intervals are distributed at equal intervals within the third time interval; the third time interval is a time interval larger than the first time interval.

With reference to any one of the third to sixth implementation manners of the fourth aspect, in a seventeenth implementation manner of the fourth aspect, in at least one candidate demodulation pilot pattern, the zero-power demodulation pilot signal is in phase The time intervals occupied by adjacent demodulation pilot signals are different in the frequency bandwidth; the time interval is the first time interval; and/or,

In at least one candidate demodulation pilot pattern, the zero-power demodulation pilot signals occupy different frequency bandwidths in time intervals occupied by adjacent demodulation pilot signals; the time interval is the first time interval.

With reference to the seventeenth implementation manner of the fourth aspect, in the eighteenth implementation manner of the fourth aspect, in at least one candidate demodulation pilot pattern, the time intervals occupied by the zero-power demodulation pilot signals are equally spaced. distribution, the occupied frequency bandwidth is equally spaced.

With reference to any one of the implementation manners of the third to eighteenth aspects of the fourth aspect, in a nineteenth implementation manner of the fourth aspect, the time interval includes a time length of a unit subframe, a time length of a unit time slot, Or the time length of a unit OFDM symbol.

With reference to any one of the implementation manners of the third to eighteenth aspects of the fourth aspect, in a twentieth implementation manner of the fourth aspect, the frequency bandwidth includes the frequency width of the unit subcarrier or the width of the unit physical resource block PRB. The width of the frequency.

With reference to the fourth aspect or any one of the third to twentieth implementation manners of the fourth aspect, in a twenty-first implementation manner of the fourth aspect, the acquiring module is specifically configured to: receive the second network device The at least two candidate pilot patterns sent through dynamic signaling or higher layer signaling.

With reference to the twenty-first implementation manner of the fourth aspect, in a twenty-second implementation manner of the fourth aspect, the first network device is a user equipment, and the second network device is a base station; or,

The first network device is user equipment, and the second network device is user equipment; or,

The first network device is a network device, and the second network device is a network device.

With reference to the twenty-first implementation manner of the fourth aspect, in the twenty-third implementation manner of the fourth aspect, the dynamic signaling or high-layer signaling is cell-specific; or,

The dynamic signaling or higher layer signaling is user group specific; or,

The dynamic signaling or higher layer signaling is user specific.

With reference to the fourth aspect or any one of the first to twenty-third implementation manners of the fourth aspect, in a twenty-fourth implementation manner of the fourth aspect, the acquiring module is specifically configured to: receive the first Two pilot patterns among the at least two candidate pilot patterns sent by the network device through dynamic signaling or high-layer signaling.

In a fifth aspect, an embodiment of the present invention provides a second network device, including:

a processor and a memory, the memory stores execution instructions, when the second network device is running, the processor communicates with the memory, the processor executes the execution instructions to cause the second network device A method as in any one of the first aspects is performed.

In a sixth aspect, an embodiment of the present invention provides a first network device, including:

a processor and a memory, the memory stores execution instructions, when the first network device is running, the processor communicates with the memory, the processor executes the execution instructions to cause the first network device A method as in any of the second aspects is performed.

The demodulation pilot configuration method and apparatus according to the embodiments of the present invention determine one of at least two candidate demodulation pilot patterns with the same number of ports through the second network device, and map the demodulation pilot signal to the demodulation pilot pattern above, the number of ports is equal to the number of layers of the data stream; wherein, at least two candidate demodulation pilot patterns with the same port number are different, and at least one of the candidate demodulation pilot patterns contains a non-zero power demodulation pilot signal occupied The physical resource unit RE and the physical resource unit RE occupied by the zero-power demodulation pilot signal, and the mapped demodulation pilot signal and the configuration information of the demodulation pilot signal are sent to the first network device, which realizes different The first network device is configured with different demodulation pilot patterns, which avoids interference to other first network devices, so the number of multiplexing users can be increased, and the configuration of the DMRS pilot in the prior art can not meet the guidance of the increased users. frequency reuse problem.

Description of drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the accompanying drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description These are some embodiments of the present invention, and for those of ordinary skill in the art, other drawings can also be obtained from these drawings without any creative effort.

1 is a schematic diagram of a demodulation pilot signal configuration in the prior art;

FIG. 2 is a flowchart of Embodiment 1 of a demodulation pilot signal configuration method according to the present invention;

FIG. 3 is a schematic diagram 1 of a candidate demodulation pilot pattern according to Embodiment 1 of the method of the present invention;

FIG. 4 is a second schematic diagram of a candidate demodulation pilot pattern according to Embodiment 1 of the method of the present invention;

FIG. 5 is a schematic diagram 1 of a candidate demodulation pilot pattern according to Embodiment 2 of the method of the present invention;

FIG. 5A is a second schematic diagram of a candidate demodulation pilot pattern according to Embodiment 2 of the method of the present invention;

FIG. 6 is a third schematic diagram of a candidate demodulation pilot pattern according to Embodiment 2 of the method of the present invention;

FIG. 7 is a fourth schematic diagram of a candidate demodulation pilot pattern according to Embodiment 2 of the method of the present invention;

8 is a fifth schematic diagram of a candidate demodulation pilot pattern according to Embodiment 2 of the method of the present invention;

9 is a sixth schematic diagram of a candidate demodulation pilot pattern according to Embodiment 2 of the method of the present invention;

10 is a seventh schematic diagram of a candidate demodulation pilot pattern according to Embodiment 2 of the method of the present invention;

11 is a schematic diagram 8 of a candidate demodulation pilot pattern according to Embodiment 2 of the method of the present invention;

12 is a schematic diagram 9 of a candidate demodulation pilot pattern according to Embodiment 2 of the method of the present invention;

13 is a schematic diagram 1 of a candidate demodulation pilot pattern according to Embodiment 3 of the method of the present invention;

FIG. 14 is a schematic structural diagram of Embodiment 1 of a network device according to the present invention;

FIG. 15 is a schematic structural diagram of Embodiment 1 of a first network device according to the present invention;

16 is a schematic structural diagram of Embodiment 2 of a network device according to the present invention;

FIG. 17 is a schematic structural diagram of Embodiment 2 of the first network device according to the present invention.

Detailed ways

In order to make the purposes, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments These are some embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

FIG. 2 is a flowchart of Embodiment 1 of an information transmission method according to the present invention. 3 is a schematic diagram 1 of a candidate demodulation pilot pattern according to Embodiment 1 of the present invention; wherein, the pattern may refer to a corresponding positional relationship, and the corresponding positional relationship indicates the subcarrier and OFDM where the pilot signal is located the location of the symbol. FIG. 4 is a second schematic diagram of a candidate demodulation pilot pattern according to Embodiment 1 of the method of the present invention. The execution body of this embodiment may be a second network device such as a base station. The solution in this embodiment is applied between the second network device and the first network device to configure the demodulation pilot signal. In this embodiment of the present invention, the first network device may be a user equipment, and the second network device may be a base station; or both the first network device and the second network device are user equipment; or, both the first network device and the second network device are Network equipment (such as base stations, etc.). As shown in FIG. 2, the method of this embodiment may include:

Step 201: The second network device determines one of at least two candidate demodulation pilot patterns with the same number of ports, and maps the demodulation pilot signal to the time-frequency resource corresponding to the demodulation pilot pattern, and the port number is equal to the data The number of layers of the stream; wherein, at least two candidate demodulation pilot patterns with the same number of ports are different, and at least one candidate demodulation pilot pattern contains physical resource elements RE occupied by non-zero power demodulation pilot signals and zero power The physical resource unit RE occupied by the demodulation pilot signal.

和灰色方格

RE为解调导频信号所占用的RE，斜线部分的RE

代表公共导频。端口数指逻辑天线端口数，等于数据流的层数。Specifically, as shown in FIGS. 3 and 4, there are two candidate demodulation pilot patterns. In this embodiment of the present invention, one of the at least two candidate demodulation pilot patterns is determined to map the demodulation pilot signal to the demodulation pilot pattern. In the pilot pattern, the number of ports corresponding to the at least two candidate demodulation pilot patterns must be the same, and the number of ports is equal to the number of layers of the data stream. One of the pilot patterns is selected, and the demodulation pilot signal is mapped to the demodulation pilot pattern, and the above-mentioned candidate demodulation pilot pattern refers to that the base station allocates a single physical resource block to the PRB pair for the first network equipment such as user equipment UE. The demodulation pilot pattern used in channel estimation. Each candidate demodulation pilot pattern contains multiple REs, gray

and grey squares

RE is the RE occupied by the demodulated pilot signal, the RE in the slashed part

stands for common pilot. The number of ports refers to the number of logical antenna ports, which is equal to the number of layers of the data stream.

Wherein, at least two candidate demodulation pilot patterns with the same number of ports are different, and each candidate demodulation pilot pattern includes physical resource elements RE occupied by non-zero-power demodulation pilot signals and zero-power demodulation pilot signals Occupied physical resource unit RE. As shown in Figure 3, the REs occupied by the non-zero power DMRS are the 6th and 7th OFDM symbols (counted from left to right) on the 2nd, 7th, and 12th subcarriers (counted from bottom to top in Figure 3). REs at positions (gray REs), REs occupied by zero-power DMRSs are REs at positions of the 13th and 14th OFDM symbols on the 2nd, 7th, and 12th subcarriers (gray checkered REs).

Optionally, at least two candidate demodulation pilot patterns with the same number of ports are different, including:

In the at least one candidate demodulation pilot pattern, the position of the RE occupied by the non-zero-power demodulation pilot signal corresponds to the position of the RE occupied by the zero-power demodulation pilot signal in the remaining at least one candidate pilot pattern.

It should be noted that, in the embodiment of the present invention, only the first network device is described as the user equipment UE, but it is not limited thereto, and the solution of the present invention can also be used between network devices or between user equipments.

Specifically, in the candidate demodulation pilot pattern shown in FIG. 4 , the REs occupied by non-zero power DMRS and the physical resource unit REs occupied by zero power DMRS are exactly opposite to those in the candidate demodulation pilot pattern shown in FIG. 3 . That is, the REs occupied by the non-zero-power DMRS in FIG. 4 correspond to the REs occupied by the zero-power DMRS in FIG. 3 , and the REs occupied by the zero-power DMRS in FIG. 4 correspond to the REs occupied by the non-zero-power DMRS in FIG. 3 .

The multiplexing of DMRS adopts the combination of different orthogonal spreading codes and different scrambling codes. Orthogonal spreading codes are applied to REs where two adjacent OFDM symbols of the DMRS are located. Among them, using the configuration in Figures 3 and 4, 4 user equipments can be used for MU MIMO multiplexing, that is, a total of 8 user equipments are used for multiplexing, UE1, UE2, UE3, UE4, UE5, UE6, UE7, UE8 . Divide UE1, UE2, UE5, and UE6 into a group and adopt the configuration shown in Figure 3, that is, UE1, UE2, UE5, and UE6 all use the positions of the 6th and 7th OFDM symbols on the 2, 7, and 12 subcarriers The REs on the device send demodulation pilot signals; UE3, UE4, UE7, and UE8 are grouped into a group and adopt the configuration shown in Figure 4, that is, UE3, UE4, UE7, and UE8 all use subcarriers 2, 7, and 12. The REs at the positions of the 13th and 14th OFDM symbols send demodulation pilot signals; UE1 corresponds to the orthogonal spreading code (1,1), and the scrambling code is generated according to nscid0; UE2 corresponds to the orthogonal spreading code (1,-1) ), the same scrambling code is generated according to nscid0; therefore UE1 and UE2 are completely orthogonal. UE5 corresponds to the orthogonal spreading code (1,1), and the scrambling code is generated according to nscid1; UE6 corresponds to the orthogonal spreading code (1,-1), and the scrambling code is also generated according to nscid1; therefore, UE5 and UE6 are completely orthogonal. Moreover, although UE1 and UE5 use the same orthogonal spreading code, but different scrambling codes, no interference is generated. The (1,1) spreading code corresponding to UE1 and UE5 indicates that the two REs of the sixth and seventh OFDM symbols on the subcarrier where each pilot is located are spread by (1,1), and UE2 (1,-1) of UE6 indicates that the two REs of the 6th and 7th OFDM symbols on the subcarrier where each pilot is located are spread spectrum using (1,-1); UE3 corresponds to orthogonal Spreading code (1,1), scrambling code is generated according to nscid0, UE4 corresponds to orthogonal spreading code (1,-1), scrambling code is generated according to nscid0; therefore UE3 and UE4 are completely orthogonal. UE7 corresponds to the orthogonal spreading code (1,1), the scrambling code is generated according to nscid1, UE8 corresponds to the orthogonal spreading code (1,-1), and the scrambling code is generated according to nscid1; therefore UE7 and UE8 are completely orthogonal; UE3 and UE7 The corresponding (1,1) spreading code indicates that the two REs of the 13th and 14th OFDM symbols on the subcarrier where each pilot is located are spread by (1,1); UE4 and UE8 correspond to The (1,-1) spreading code indicates that the two REs of the 13th and 14th OFDM symbols on the subcarrier where each pilot is located are spread by (1,-1). Among them, the REs occupied by the non-zero-power demodulation pilot signals of UE1, UE2, UE5 and UE6 are the same as the REs occupied by the zero-power demodulation pilot signals of UE3, UE4, UE7 and UE8. Therefore, UE3, UE4, UE7 and UE8 will not interfere with the pilots of UE1, UE2, UE5 and UE6; the REs occupied by the zero-power demodulation pilot signals of UE1, UE2, UE5 and UE6 and the non-zero-power demodulation pilots of UE3, UE4, UE7 and UE8 The RE positions occupied by the frequency signals are the same, so UE1, UE2, UE5 and UE6 will not interfere with the pilots of UE3, UE4, UE7 and UE8.

As shown in Figures 1, 3, and 4, there may also be a total of 6 users UE1, UE2, UE3, UE4, UE5, and UE6 to perform MU MIMO multiplexing. A group of UE2 and UE5 adopts the configuration as shown in FIG. 3 , that is, UE2 and UE5 both use REs at the positions of the 6th and 7th OFDM symbols on the 2nd, 7th, and 12th subcarriers to send demodulation pilot signals; UE3 and UE6 are divided into a group and adopt the configuration as shown in Figure 4, that is, UE3 and UE6 both use REs at the positions of the 13th and 14th OFDM symbols on the 2nd, 7th, and 12th subcarriers to send demodulation pilot signals ; UE1 and UE4 use the configuration as shown in FIG. 1 in the prior art; that is, UE1 and UE4 both use REs at the positions of the 6th, 7th, 13th, and 14th OFDM symbols on the 2, 7, and 12 subcarriers Send demodulation pilot signal; UE1 corresponding to orthogonal spreading code (1,1,1,1) indicates that the two REs of the 6th and 7th OFDM symbols on the subcarrier where each pilot is located use (1,1) is spread, and the two REs of the 13th and 14th OFDM symbols are also spread by (1,1), and the scrambling code is generated according to nscid0; UE2 corresponds to the orthogonal spreading code (1,-1 ), the same scrambling code is generated according to nscid0; UE1 and UE2 are completely orthogonal and do not cause interference; UE5 corresponds to the orthogonal spreading code (1,-1), and the scrambling code is generated according to nscid1. And UE2 and UE5 use the same orthogonal spreading codes but different scrambling codes, and do not cause interference; the (1,-1) spreading codes corresponding to UE2 and UE5 indicate that each pilot is located on the subcarrier. The two REs of the 6th and 7th OFDM symbols are spread using (1,-1). UE3 corresponds to the orthogonal spreading code (1,-1), the scrambling code is generated according to nscid0, UE4 corresponds to the orthogonal spreading code (1,1,1,1), and the scrambling code is generated according to nscid1 (same as UE1); UE3 and UE4 Completely orthogonal, no interference; UE6 corresponds to the orthogonal spreading code (1,-1), and the scrambling code is generated according to nscid1; the (1,-1) spreading code corresponding to UE3 and UE6 indicates that each pilot The two REs of the 13th and 14th OFDM symbols on the sub-carriers where they are located are spread by using (1, -1). Among them, UE1 and UE4 are existing UEs and can only use the configuration shown in FIG. 1 . The REs occupied by the non-zero-power demodulation pilot signals of UE2 and UE5 are the same as the REs occupied by the zero-power demodulation pilot signals of UE3 and UE6, so UE3 and UE6 will not interfere with the pilots of UE2 and UE5. The REs occupied by the non-zero-power demodulation pilot signals of UE3 and UE6 are the same as the REs occupied by the zero-power demodulation pilot signals of UE2 and UE5. Therefore, UE2 and UE5 will not interfere with the pilots of UE3 and UE6.

As shown in Figures 1, 3, and 4, there may also be a total of 7 users UE1, UE2, UE3, UE4, UE5, UE6, and UE7 for MU MIMO multiplexing. The UE2, UE4, and UE5 are grouped into a group, and the configuration shown in Figure 3 is used, that is, UE2, UE4, and UE5 all use the REs on the 6th and 7th OFDM symbols on the 2, 7, and 12 subcarriers to transmit. The demodulation pilot signal; UE3, UE6, and UE7 are divided into a group and adopt the configuration as shown in Figure 4. UE3, UE6 and UE7 all use the positions of the 13th and 14th OFDM symbols on the 2, 7 and 12 sub-carriers The RE on the UE1 transmits the demodulation pilot signal; UE1 adopts the configuration as shown in FIG. 1 in the prior art, that is, UE1 adopts the The RE at the location sends the demodulation pilot signal; UE1 corresponding to the orthogonal spreading code (1,1,1,1) indicates that the 6th and 7th OFDM symbols on the subcarrier where each pilot is located The two REs use (1,1) to spread the spectrum, and the two REs of the 13th and 14th OFDM symbols also use (1,1) to spread the spectrum, and the scrambling code is generated according to nscid0; UE2 corresponds to the orthogonal spreading code ( 1,-1), the same scrambling code is generated according to nscid0; UE1 and UE2 are completely orthogonal and do not cause interference; UE4 corresponds to the orthogonal spread spectrum code (1,1), the scrambling code is generated according to nscid1, and UE5 corresponds to the orthogonal spread spectrum code (1,-1), the scrambling code is generated according to nscid1, UE4 and UE5 are completely orthogonal and do not cause interference; and although UE2 and UE5 use the same orthogonal spreading code, but the scrambling code is different, there is no interference; UE2 and UE5 The corresponding (1,-1) spreading code indicates that the two REs of the sixth and seventh OFDM symbols on the subcarrier where each pilot is located are spread by (1,-1). The (1,1) spreading code corresponding to UE4 indicates that the two REs of the 6th and 7th OFDM symbols on the subcarrier where each pilot is located are spread by (1,1); UE3 corresponds to the positive Cross spreading code (1,-1), scrambling code is generated according to nscid0; UE6 corresponds to orthogonal spreading code (1,1), scrambling code is generated according to nscid1; UE7 corresponds to orthogonal spreading code (1,-1), The scrambling code is generated according to nscid1, UE6 and UE7 are completely orthogonal and do not cause interference; and UE3 and UE7 use the same orthogonal spreading code but different scrambling codes and do not cause interference; UE3 and UE7 correspond to (1,-1 ) spread spectrum code indicates that the two REs of the sixth and seventh OFDM symbols on the subcarrier where each pilot is located are spread spectrum using (1,-1). The (1,1) spreading code corresponding to UE6 indicates that the two REs of the sixth and seventh OFDM symbols on the subcarrier where each pilot is located are spread by (1,1). The UE1 is an existing UE and can only use the configuration shown in FIG. 1 . The REs occupied by the non-zero-power demodulation pilot signals of UE2, UE4, and UE5 are the same as the REs occupied by the zero-power demodulation pilot signals of UE3, UE6, and UE7. The pilot of UE5 causes interference; the REs occupied by the zero-power demodulation pilot signals of UE2, UE4 and UE5 are the same as the REs occupied by the non-zero-power demodulation pilot signals of UE3, UE6 and UE7, so UE2, UE4 and UE5 There will be no interference to the pilots of UE3, UE6 and UE7.

Optionally, at least two candidate demodulation pilot patterns with the same number of ports are different, including:

In at least one candidate demodulation pilot pattern, the positions of REs occupied by all non-zero-power demodulation pilot signals and the positions of REs occupied by all zero-power demodulation pilot signals correspond to the remaining at least one candidate pilot pattern. The position of the RE occupied by the zero-power demodulation pilot signal.

Specifically, in the candidate demodulation pilot pattern shown in FIG. 3 or 4, the REs occupied by all non-zero-power DMRSs and the physical resource unit REs occupied by all zero-power DMRSs are the same as the candidate demodulation pilot patterns shown in FIG. 1 . The positions of the REs occupied by the non-zero power demodulation pilot signals in correspond to.

Step 202: The second network device sends the mapped demodulated pilot signal and the configuration information of the demodulated pilot signal to the first network device.

Specifically, the second network device sends the demodulation pilot signal mapped to the demodulation pilot pattern and the configuration information of the demodulation pilot signal to the first network device, and the configuration information of the demodulation pilot signal indicates:

Physical resource units occupied by non-zero power demodulation pilot signals; or

the physical resource units occupied by the zero-power demodulation pilot signal; or

spreading code; or

at least one of scrambling information.

In this embodiment, the second network device determines one of at least two candidate demodulation pilot patterns with the same number of ports, and maps the demodulation pilot signal to the time-frequency resource corresponding to the demodulation pilot pattern. equal to the number of layers of the data stream; wherein at least two candidate demodulation pilot patterns with the same number of ports are different, and at least one of the candidate demodulation pilot patterns includes physical resource elements occupied by non-zero power demodulation pilot signals The physical resource unit RE occupied by the RE and the zero-power demodulation pilot signal, and the mapped demodulation pilot signal and the configuration information of the demodulation pilot signal are sent to the first network device, which realizes different first network devices. Configuring different demodulation pilot patterns avoids interference to other first network devices, so the number of multiplexed users can be increased, and the problem that the configuration of DMRS in the prior art cannot meet the pilot multiplexing of increased users is solved.

FIG. 5 is a schematic diagram 1 of a candidate demodulation pilot pattern in Embodiment 2 of the method of the present invention. FIG. 5A is a second schematic diagram of a candidate demodulation pilot pattern according to Embodiment 2 of the method of the present invention. FIG. 6 is a third schematic diagram of a candidate demodulation pilot pattern according to Embodiment 2 of the method of the present invention. FIG. 7 is a fourth schematic diagram of a candidate demodulation pilot pattern according to Embodiment 2 of the method of the present invention. FIG. 8 is a fifth schematic diagram of a candidate demodulation pilot pattern according to Embodiment 2 of the method of the present invention. FIG. 9 is a sixth schematic diagram of a candidate demodulation pilot pattern according to Embodiment 2 of the method of the present invention. FIG. 10 is a seventh schematic diagram of a candidate demodulation pilot pattern according to Embodiment 2 of the method of the present invention. FIG. 11 is a schematic diagram 8 of a candidate demodulation pilot pattern according to Embodiment 2 of the method of the present invention. FIG. 12 is a ninth schematic diagram of a candidate demodulation pilot pattern according to Embodiment 2 of the method of the present invention. Based on the method embodiment shown in FIG. 1 , in this embodiment, in at least one candidate demodulation pilot pattern, at least one time interval occupied by the non-zero power demodulation pilot signal and at least one zero power demodulation pilot signal The time intervals occupied by the pilot signals are different, and the frequency bandwidth occupied by the non-zero-power demodulation pilot signal and the frequency bandwidth occupied by the zero-power demodulation pilot signal are also different.

or

In at least one candidate demodulation pilot pattern, the time interval occupied by all the non-zero-power demodulation pilot signals is different from the time interval occupied by all the zero-power demodulation pilot signals, and all the non-zero-power demodulation pilot signals occupy different time intervals. The frequency bandwidth occupied by the frequency signal and the frequency bandwidth occupied by all zero-power demodulation pilot signals are also different.

Specifically, in the candidate demodulation pilot pattern shown in FIG. 5 , the REs occupied by the non-zero power DMRS are the 6th, 7th subcarriers on the 2nd, 7th, and 12th subcarriers (counted from bottom to top in FIG. 5 ). REs (gray REs) at the positions of OFDM symbols (counting from left to right), REs occupied by zero-power DMRS are REs at the positions of the 13th and 14th OFDM symbols on the 1st, 6th, and 11th subcarriers (grey square RE). The time interval occupied by all the non-zero power demodulation pilot signals is the time length of the first time slot, and the time interval occupied by all zero power demodulation pilot signals is the time length of the second time slot, so all the The time interval occupied by the non-zero power demodulation pilot signal is different from the time interval occupied by all the zero power demodulation pilot signals, and the frequency bandwidth occupied by all the non-zero power demodulation pilot signals is the second, seventh, 12 sub-carriers, and the frequency bandwidth occupied by all the zero-power demodulation pilot signals is the width of the frequency of the 1st, 6th, and 11th sub-carriers, so the frequency bandwidth occupied by all the non-zero-power demodulation pilot signals and The frequency bandwidth occupied by all zero-power demodulation pilot signals is also different.

The multiplexing method of DMRS can adopt the following methods: using the configuration methods in FIG. 5 and FIG. 5A, 4 users can perform MU MIMO multiplexing respectively, that is, a total of 8 users are multiplexed, UE1, UE2, UE3, UE4, UE5, UE6, UE7, UE8. Divide UE1, UE2, UE5, and UE6 into a group and adopt the configuration as shown in Figure 5, that is, UE1, UE2, UE5, and UE6 all use the positions of the 6th and 7th OFDM symbols on the 2, 7, and 12 subcarriers UE3, UE4, UE7, and UE8 are divided into a group and adopt the configuration shown in Figure 5A, that is, UE3, UE4, UE7, and UE8 all use subcarriers 1, 6, and 11. The REs at the positions of the 13th and 14th OFDM symbols send demodulation pilot signals; UE1 corresponds to the orthogonal spreading code (1,1), and the scrambling code is generated according to nscid0; UE2 corresponds to the orthogonal spreading code (1,-1) ), the same scrambling code is generated according to nscid0; therefore UE1 and UE2 are completely orthogonal. UE5 corresponds to the orthogonal spreading code (1,1), and the scrambling code is generated according to nscid1; UE6 corresponds to the orthogonal spreading code (1,-1), and the scrambling code is also generated according to nscid1; therefore, UE5 and UE6 are completely orthogonal. And UE1 and UE5 use the same orthogonal spreading code, but different scrambling codes, and do not cause interference; The two REs of the 6th and 7th OFDM symbols use (1, 1) for spectrum spreading, and (1, -1) of UE2 and UE6 represent the 6th and 7th REs on the subcarrier where each pilot is located. The two REs of 7 OFDM symbols are spread using (1,-1). UE3 corresponds to the orthogonal spreading code (1,1), the scrambling code is generated according to nscid0, and the UE4 corresponds to the orthogonal spreading code (1,-1), and the scrambling code is generated according to nscid0; therefore, UE3 and UE4 are completely orthogonal. UE7 corresponds to the orthogonal spreading code (1,1), the scrambling code is generated according to nscid1, UE8 corresponds to the orthogonal spreading code (1,-1), and the scrambling code is generated according to nscid1; therefore UE7 and UE8 are completely orthogonal; UE3 and UE7 The corresponding (1,1) spreading code indicates that the two REs of the 13th and 14th OFDM symbols on the subcarrier where each pilot is located are spread by (1,1), and UE4 and UE8 correspond to (1,-1) indicates that the two REs of the 13th and 14th OFDM symbols on the subcarrier where each pilot is located are spread spectrum using (1,-1). Among them, the REs occupied by the non-zero-power demodulation pilot signals of UE1, UE2, UE5 and UE6 are the same as the REs occupied by the zero-power demodulation pilot signals of UE3, UE4, UE7 and UE8. Therefore, UE3, UE4, UE7 and UE8 will not interfere with the pilots of UE1, UE2, UE5 and UE6; the REs occupied by the zero-power demodulation pilot signals of UE1, UE2, UE5 and UE6 and the non-zero-power demodulation pilots of UE3, UE4, UE7 and UE8 The RE positions occupied by the frequency signals are the same, so UE1, UE2, UE5 and UE6 will not interfere with the pilots of UE3, UE4, UE7 and UE8.

There may also be other multiplexing manners of users, which are similar to those in Embodiment 1, and are not repeated here.

Optionally, in at least one candidate demodulation pilot pattern, the time interval occupied by all non-zero power demodulation pilot signals is different from the time interval occupied by all zero power demodulation pilot signals.

Specifically, in the above situation, the candidate demodulation pilot patterns shown in Figures 3 and 4 can be used. As shown in Figure 3, the time interval occupied by all the non-zero power demodulation pilot signals is the first time slot. time length, the time interval occupied by all zero-power demodulation pilot signals is the time length of the second time slot, so the time interval occupied by all the non-zero-power demodulation pilot signals and all zero-power demodulation pilot signals The occupied time intervals are different, which will not be repeated here.

Optionally, in at least one candidate demodulation pilot pattern, the frequency bandwidth occupied by all non-zero power demodulation pilot signals is different from the frequency bandwidth occupied by all zero power demodulation pilot signals.

Specifically, in the candidate demodulation pilot pattern shown in FIG. 6 , the REs occupied by the non-zero power DMRS are the REs (gray REs) at the positions of the 6th and 7th OFDM symbols on the 12th subcarrier, and REs (gray REs) at the positions of the 13th and 14th OFDM symbols on the 12th subcarrier; REs occupied by zero-power DMRS are at the positions of the 6th and 7th OFDM symbols on the 2nd and 7th subcarriers REs (gray square REs), and REs (gray square REs) at the positions of the 13th and 14th OFDM symbols on the 2nd and 7th subcarriers. As shown in FIG. 7 , the REs occupied by the non-zero power DMRS and the physical resource unit REs occupied by the zero power DMRS in the candidate demodulation pilot pattern shown in FIG. 7 are exactly opposite to those in FIG. REs correspond to REs occupied by zero-power DMRSs in FIG. 6 , and REs occupied by zero-power DMRSs in FIG. 7 correspond to REs occupied by non-zero-power DMRSs in FIG. 6 . The frequency bandwidth occupied by all non-zero power demodulation pilot signals in the above pattern is different from the frequency bandwidth occupied by all zero power demodulation pilot signals, where the frequency bandwidth is, for example, the frequency width of the subcarrier. Such candidate demodulation pilot patterns can increase the sampling of time and improve the performance of channel estimation.

The candidate demodulation pilot patterns shown in FIG. 8 and FIG. 9 are similar to the candidate demodulation pilot patterns shown in FIG. 6 and FIG. 7 , and will not be repeated here.

As shown in FIG. 10 , the frequency bandwidth occupied by all non-zero-power demodulation pilot signals of the candidate demodulation pilot pattern is different from the frequency bandwidth occupied by all zero-power demodulation pilot signals, where the frequency bandwidth is, for example, the frequency of the PRB. width. The REs occupied by non-zero-power DMRS are the 6th, 7th, 13th, and 14th OFDM (from bottom to top) of the second PRB pair (counted from bottom to top) on the 2nd, 7th, and 12th subcarriers (counted from bottom to top). Counting from left to right) the RE (gray RE) at the position of the symbol, the RE occupied by the zero-power DMRS is the 6th and 7th of the first PRB pair (counted from bottom to top) on the 2nd, 7th, and 12th subcarriers and REs at the positions of 13, 14 OFDM symbols (grey square REs).

Optionally, the time interval includes a time length of a unit subframe, a time length of a unit time slot, or a time length of a unit OFDM symbol.

Optionally, the frequency bandwidth includes a frequency width of a unit subcarrier or a frequency width of a unit physical resource block PRB.

Optionally, in at least one candidate demodulation pilot pattern, the time intervals occupied by the non-zero power demodulation pilot signal and the zero power demodulation pilot signal in the frequency bandwidth where the adjacent demodulation pilot signals are located are different; the time interval is the first time interval; and/or,

In at least one candidate demodulation pilot pattern, the frequency bandwidth occupied by the non-zero power demodulation pilot signal and the zero power demodulation pilot signal in the time interval where the adjacent demodulation pilot signal is located is different; a time interval.

Specifically, in the candidate demodulation pilot pattern shown in FIG. 11 , the REs occupied by non-zero power DMRSs are REs (gray REs) at the positions of the 6th and 7th OFDM symbols on the 2nd and 12th subcarriers , and REs (gray REs) at the positions of the 13th and 14th OFDM symbols on the 7th subcarrier; the REs occupied by zero-power DMRS are the 6th and 7th OFDM symbols on the 7th subcarrier. REs (gray square REs), and REs (gray square REs) at the positions of the 13th and 14th OFDM symbols on the 2nd and 12th subcarriers. That is, the time interval occupied by the non-zero-power DMRS on the sub-carriers where the adjacent demodulation pilot signals are located, such as 2 and 7, are the time lengths of the first time slot and the second time slot respectively, while the time occupied by the zero-power DMRS is The time interval is the time length of the second time slot and the first time slot respectively, that is, the time interval is different, and the time interval at this time is the time slot; or, the non-zero power and zero power DMRS on adjacent time slots The occupied subcarriers are different. As shown in FIG. 12 , the REs occupied by the non-zero power DMRS and the physical resource unit REs occupied by the zero power DMRS in the candidate demodulation pilot pattern shown in FIG. 12 are exactly opposite to those in FIG. REs correspond to REs occupied by zero-power DMRSs in FIG. 11 , and REs occupied by zero-power DMRSs in FIG. 12 correspond to REs occupied by non-zero-power DMRSs in FIG. 11 .

In this way, compared with the candidate demodulation pilot patterns in FIG. 3 and FIG. 4 , time sampling can be increased, and the performance of channel estimation can be improved.

The multiplexing method of DMRS can be as follows: using the configuration methods in Figures 11 and 12, there can be 4 users for MU MIMO multiplexing, that is, a total of 8 users are multiplexed, UE1, UE2, UE3, UE4, UE5 , UE6, UE7, UE8. Divide UE1, UE2, UE5, and UE6 into a group and adopt the configuration shown in Figure 11, that is, UE1, UE2, UE5, and UE6 all use the positions of the 6th and 7th OFDM symbols on the 2nd and 12th subcarriers. The REs on the 7th subcarrier and the REs on the 13th and 14th OFDM symbols on the 7th subcarrier send demodulation pilot signals; UE3, UE4, UE7, and UE8 are divided into a group using the configuration shown in Figure 12, and the Figure 11 is just the opposite, that is, UE3, UE4, UE7, and UE8 all use the REs at the positions of the 13th and 14th OFDM symbols on the 2nd and 12th subcarriers and the 6th and 7th OFDM symbols on the 7th subcarrier. The REs at the location transmit demodulated pilot signals. UE1 corresponds to the orthogonal spread spectrum code (1,1) on the 2nd and 12th subcarriers, and corresponds to the orthogonal spread spectrum code (1,1) on the 7th subcarrier, and the scrambling code is generated according to nscid0; The 12th subcarrier corresponds to the orthogonal spreading code (1,-1), and the seventh subcarrier corresponds to the orthogonal spreading code (1,-1), UE2 and UE1 are completely orthogonal, and the same scrambling code is generated according to nscid0. UE5 and UE6 have the same orthogonal spreading codes corresponding to UE1 and UE2 respectively, and the scrambling code is generated according to nscid1; therefore, UE5 and UE6 are completely orthogonal. And UE1 and UE5 and UE2 and UE6 use the same orthogonal spreading codes but different scrambling codes and do not cause interference; the (1,1) spreading codes corresponding to UE1 and UE5 indicate the sub-carrier where the pilot is located. 2. The two REs of the 6th and 7th OFDM symbols on 12 use (1,1) for spectrum spreading, and the two REs of the 13th and 14th OFDM symbols on the subcarrier 7 where the pilot is located use (1,1) Spread spectrum, UE2 and UE6 are similar to UE1 and UE5. UE3 corresponds to the orthogonal spreading code (1,1) on the 2nd and 12th subcarriers, and corresponds to the orthogonal spreading code (1,1) on the 7th subcarrier. The scrambling code is generated according to nscid0. The 12th subcarrier corresponds to the orthogonal spreading code (1,-1), and the 7th subcarrier corresponds to the orthogonal spreading code (1,-1), which is completely orthogonal to UE4 and UE3, and the scrambling code is generated according to nscid0. UE7 and UE8 have the same orthogonal spreading codes as UE3 and UE4 respectively, and the scrambling code is generated according to nscid1; therefore, UE7 and UE8 are completely orthogonal. And UE3 and UE7 and UE4 and UE8 use the same orthogonal spreading codes but different scrambling codes and do not cause interference; the (1,1) spreading codes corresponding to UE3 and UE7 indicate the sub-carrier where the pilot is located. 2. The two REs of the 13th and 14th OFDM symbols on 12 use (1,1) for spectrum spreading, and the two REs of the 6th and 7th OFDM symbols on the subcarrier 7 where the pilot is located use (1,1) Spread spectrum, UE4 and UE8 are similar to UE3 and UE7. Among them, the REs occupied by the non-zero-power demodulation pilot signals of UE1, UE2, UE5 and UE6 are the same as the REs occupied by the zero-power demodulation pilot signals of UE3, UE4, UE7 and UE8. Therefore, UE3, UE4, UE7 and UE8 will not interfere with the pilots of UE1, UE2, UE5 and UE6; the REs occupied by the zero-power demodulation pilot signals of UE1, UE2, UE5 and UE6 and the non-zero-power demodulation pilots of UE3, UE4, UE7 and UE8 The RE positions occupied by the frequency signals are the same, so UE1, UE2, UE5 and UE6 will not interfere with the pilots of UE3, UE4, UE7 and UE8.

There may also be multiplexing of 6 and 7 users, which is similar to that in the method embodiment 1, and will not be repeated here.

In this embodiment, the positions of the REs occupied by the non-zero-power demodulation pilot signals in the at least one candidate demodulation pilot pattern correspond to the position of the REs occupied by the zero-power demodulation pilot signals in the remaining at least one candidate pilot pattern. position, different demodulation pilot patterns can be configured for different first network devices, and interference to other first network devices is avoided, so the number of multiplexing users can be increased, and the configuration of DMRS in the prior art can not meet the requirement of increasing the number of users. The problem of pilot reuse of users.

FIG. 13 is a schematic diagram 1 of a candidate demodulation pilot pattern according to Embodiment 3 of the method of the present invention. On the basis of Method Embodiments 1 and 2, in the first implementation manner in this embodiment:

In at least one candidate demodulation pilot pattern, all non-zero power demodulation pilot signals occupy the same time interval; the time interval is the first time interval.

In at least one candidate demodulation pilot pattern, all zero-power demodulation pilot signals occupy the same time interval; the time interval is the first time interval.

Specifically, at least one candidate demodulation pilot pattern may be a candidate demodulation pilot pattern as shown in FIGS. 3 and 4 , all non-zero-power demodulation pilot signals occupy the same time slot, and all zero-power demodulation pilot signals The time slots occupied by the signals are the same, that is, the first time interval may be the time length of the time slot.

Optionally, in at least one candidate demodulation pilot pattern, the frequency bandwidth occupied by the non-zero power demodulation pilot signal within the same time interval is distributed at equal intervals within the first frequency bandwidth; the time interval is the second time interval. interval, the second time interval is a time interval smaller than the first time interval.

Optionally, in the at least one candidate demodulation pilot pattern, the frequency bandwidth occupied by the zero-power demodulation pilot signal within the same time interval is distributed at equal intervals within the first frequency bandwidth, and the time interval is the second time interval. time interval, the second time interval is a time interval smaller than the first time interval.

Specifically, in the above case, the candidate demodulation pilot patterns as shown in Figures 3 and 4 can be used. At this time, the demodulation pilot signal with non-zero power or zero power in the same time interval (for example, the time length of the same time slot) The frequency bandwidth occupied by the demodulation pilot signal (for example, the frequency width of the subcarrier) is distributed at equal intervals within the first frequency bandwidth, and the first frequency bandwidth may be the width of the frequency of the PRB, that is, it is equally spaced within the PRB, and the interval is 5 subcarriers, which will not be repeated here.

The above-mentioned second time interval is smaller than the first time interval, the second time interval is, for example, the time length of an OFDM symbol, and the first time interval is, for example, the time length of a unit time slot.

In the second implementation manner in this embodiment:

In at least one candidate demodulation pilot pattern, the frequency bandwidth occupied by the non-zero power demodulation pilot signal is the same.

In at least one candidate demodulation pilot pattern, the frequency bandwidth occupied by the zero-power demodulation pilot signal is the same.

Specifically, the at least one candidate demodulation pilot pattern can be the candidate demodulation pilot pattern shown in FIG. 6 , the subcarriers occupied by all non-zero power demodulation pilot signals are the same, and the at least one candidate demodulation pilot pattern can be With the candidate demodulation pilot pattern shown in Figure 7, all zero-power demodulation pilot signals occupy the same sub-carriers, that is, the above-mentioned frequency bandwidth can be the width of the frequency of the sub-carriers; or, as shown in Figures 6 and 7 , the non-zero-power demodulation pilot signal and the zero-power demodulation pilot signal occupy the same frequency width of the PRB pair.

Optionally, in at least one candidate demodulation pilot pattern, the time intervals occupied by the non-zero power demodulation pilot signals within the same frequency bandwidth are equally spaced in a third time interval; the third time interval is a time interval larger than the first time interval.

Optionally, in at least one candidate demodulation pilot pattern, the time intervals occupied by the zero-power demodulation pilot signals within the same frequency bandwidth are equally spaced in a third time interval; the third time interval is: A time interval greater than the first time interval.

Specifically, in the above situation, the candidate demodulation pilot pattern shown in FIG. 6 and FIG. 10 can be used to demodulate non-zero power within the same frequency bandwidth (eg, the frequency width of the subcarrier and the frequency width of the PRB pair). The time interval occupied by the pilot signal or the zero-power demodulation pilot signal is distributed at equal intervals in the third time interval (such as the time length of a unit subframe), that is, distributed at equal intervals in the subframe, and the interval is 6 symbols; The third time interval is a time interval larger than the first time interval (eg, the time length of a time slot). It will not be repeated here.

The above-mentioned third time interval is larger than the first time interval, and the third time interval is, for example, the time length of a unit subframe, including the time length of two unit time slots, and the first time interval is, for example, the time length of a unit time slot.

In the third implementation manner in this embodiment:

In at least one candidate demodulation pilot pattern, the time intervals occupied by the non-zero-power demodulation pilot signals in the frequency bandwidth where the adjacent demodulation pilot signals are located are different; the time interval is the first time interval; and / or,

In at least one candidate demodulation pilot pattern, the non-zero-power demodulation pilot signals occupy different frequency bandwidths in time intervals where adjacent demodulation pilot signals are located; the time interval is the first time interval.

Optionally, in at least one candidate demodulation pilot pattern, the time interval occupied by the zero-power demodulation pilot signal in the frequency bandwidth occupied by adjacent demodulation pilot signals is different; the time interval is the first time interval; and/or,

In at least one candidate demodulation pilot pattern, the zero-power demodulation pilot signals occupy different frequency bandwidths in time intervals occupied by adjacent demodulation pilot signals; the time interval is the first time interval.

Specifically, in the above case, the candidate demodulation pilot pattern shown in Figures 11 and 12 can be used, and the non-zero power demodulation pilot signal or the zero power demodulation pilot signal is in the frequency band where the adjacent demodulation pilot signal is located. The time intervals occupied by the width (for example, the width of the frequency of the subcarrier) are different; the time interval is the first time interval, for example, the time length of a unit time slot; and/or the demodulation pilot signal with non-zero power or zero power The frequency bandwidth occupied by the demodulation pilot signal at the time interval where the adjacent demodulation pilot signal is located (for example, the width of the frequency of the subcarrier) is different; the time interval is the first time interval, such as the time of a unit time slot length.

As shown in FIG. 11 , the REs occupied by the non-zero power DMRS are the REs (gray REs) at the positions of the 6th and 7th OFDM symbols on the 2nd and 12th subcarriers, and the 13th REs on the 7th subcarrier , RE (gray RE) at the position of 14 OFDM symbols, that is, the time interval occupied by the non-zero power DMRS on the subcarriers where the adjacent demodulation pilot signals are located, such as 2 and 7, are respectively the first time slot. The time intervals occupied by the REs at the positions of the 6th and 7th OFDM symbols, the REs at the positions of the 13th and 14th OFDM symbols of the second time slot, and the non-zero power DMRSs on subcarriers 7 and 12 are respectively REs at the positions of the 13th and 14th OFDM symbols of the two time slots and REs at the positions of the 6th and 7th OFDM symbols of the first time slot; REs occupied by zero-power DMRS are on the seventh subcarrier REs at the positions of the 6th and 7th OFDM symbols (gray checkered REs), and REs at the positions of the 13th and 14th OFDM symbols on the 2nd and 12th subcarriers (grey checkered REs). That is, the time interval occupied by the zero-power DMRS on the subcarriers where the adjacent demodulation pilot signals are located, such as 2 and 7, are the RE and the first OFDM symbol at the position of the 13th and 14th OFDM symbols of the second time slot, respectively. The time intervals occupied by REs at the positions of the 6th and 7th OFDM symbols of the time slot and zero-power DMRSs on subcarriers 7 and 12 are the REs at the positions of the 6th and 7th OFDM symbols of the first time slot, respectively. It is different from the REs at the positions of the 13th and 14th OFDM symbols of the second time slot, that is, the time interval on the subcarriers where the adjacent demodulated pilot signals are located; The subcarriers occupied by zero-power DMRSs are different, and the subcarriers occupied by zero-power DMRSs on adjacent time slots are different.

Optionally, in the at least one candidate demodulation pilot pattern, the time interval occupied by the non-zero power demodulation pilot signal is distributed at equal intervals, and the occupied frequency bandwidth is distributed at equal intervals.

Optionally, in at least one candidate demodulation pilot pattern, the time interval occupied by the zero-power demodulation pilot signal is distributed at equal intervals, and the occupied frequency bandwidth is distributed at equal intervals.

Specifically, as shown in FIG. 13 for the candidate demodulation pilot pattern, the time interval occupied by the non-zero power demodulation pilot signal or the zero power demodulation pilot signal is distributed at equal intervals, the occupied frequency bandwidth is distributed at equal intervals, and the time interval For example, it is the time length of a unit OFDM symbol, and the frequency bandwidth is, for example, the frequency width of a unit subcarrier.

The REs occupied by non-zero-power DMRS are REs (gray REs) at the positions of the 7th and 14th OFDM symbols (counted from left to right) on the 2nd, 7th, and 12th subcarriers (counted from bottom to top in the figure). ), the REs occupied by zero-power DMRS are REs at the positions of the 6th and 13th OFDM symbols on the 2nd, 7th, and 12th subcarriers (gray square REs); OFDM occupied by non-zero-power DMRS and zero-power DMRS The symbols are equally spaced within the time length of the unit subframe, and the interval is 6 OFDM symbols; the subcarriers occupied by non-zero power DMRS and zero power DMRS are equally spaced within the frequency width of the PRB, and the interval is 5 subcarriers .

Optionally, the at least two candidate pilot patterns are sent to the first network device through dynamic signaling or high-layer signaling.

Optionally, the dynamic signaling or high-layer signaling is cell-specific; or,

The dynamic signaling or higher layer signaling is user group specific; or,

The dynamic signaling or higher layer signaling is user specific.

Optionally, one pilot pattern among the at least two candidate pilot patterns is sent to the first network device through dynamic signaling or high-layer signaling.

Specifically, cell-specific means that the network equipment sends the same pilot patterns to users in the same cell, user group-specific means that the network equipment sends the same pilot patterns to users in the same user group, and user-specific means that the network equipment sends the same pilot patterns to users in the same user group. Different users send different pilot patterns.

In Embodiment 4 of the demodulation pilot signal configuration method of the present invention, the execution subject of this embodiment may be a first network device, and the first network device is, for example, a base station, user equipment, or other network devices. The solution in this embodiment is applied between the second network device and the first network device to configure the demodulation pilot signal. The method of this embodiment may include:

The first network device obtains a demodulation pilot pattern according to the received demodulation pilot configuration information, and receives a demodulation pilot signal according to the corresponding demodulation pilot pattern; the demodulation pilot pattern is at least two one of the candidate demodulation pilot patterns with the same number of ports, the number of ports being equal to the number of layers of the data stream;

Wherein, the at least two candidate demodulation pilot patterns with the same number of ports are different, and at least one of the candidate demodulation pilot patterns includes physical resource elements RE occupied by non-zero power demodulation pilot signals and zero power demodulation pilot patterns. The physical resource unit RE occupied by the modulation pilot signal.

Specifically, as shown in Figures 3 and 4, there are two candidate demodulation pilot patterns. The network device determines one of at least two candidate demodulation pilot patterns with the same number of ports, and maps the demodulation pilot signal to the demodulation pilot pattern. In the modulation pilot pattern, the number of ports is equal to the number of layers of the data stream; the candidate demodulation pilot pattern refers to the demodulation pilot pattern used by the base station when allocating a single physical resource block to the first network device to perform channel estimation on the PRB pair. Each candidate demodulation pilot pattern includes multiple REs, the REs in gray and gray squares are REs occupied by the demodulation pilot signals, and the REs in the slashed part represent common pilots. The number of ports refers to the number of logical antenna ports, which is equal to the number of layers of the data stream.

Wherein, at least two candidate demodulation pilot patterns with the same number of ports are different, and each candidate demodulation pilot pattern includes physical resource elements RE occupied by non-zero-power demodulation pilot signals and zero-power demodulation pilot signals Occupied physical resource unit RE. As shown in Figure 3, the REs occupied by the non-zero power DMRS are the 6th and 7th OFDM symbols (counted from left to right) on the 2nd, 7th, and 12th subcarriers (counted from bottom to top in Figure 3). REs at positions (gray REs), REs occupied by zero-power DMRSs are REs at positions of the 13th and 14th OFDM symbols on the 2nd, 7th, and 12th subcarriers (gray checkered REs).

The first network device receives the demodulation pilot signal and the configuration information of the demodulation pilot signal mapped to the candidate demodulation pilot pattern by the second network device, and the configuration information of the demodulation pilot signal indicates:

Physical resource units occupied by non-zero power demodulation pilot signals; or

the physical resource units occupied by the zero-power demodulation pilot signal; or

spreading code; or

at least one of scrambling information.

Optionally, the at least two candidate demodulation pilot patterns with the same port number are different, including:

In at least one candidate demodulation pilot pattern, the position of the RE occupied by the non-zero-power demodulation pilot signal corresponds to the position of the RE occupied by the zero-power demodulation pilot signal in the remaining at least one candidate pilot pattern .

Optionally, the at least two candidate demodulation pilot patterns with the same port number are different, including:

In at least one candidate demodulation pilot pattern, the positions of the REs occupied by all the non-zero-power demodulation pilot signals and the positions of the REs occupied by all the zero-power demodulation pilot signals correspond to the remaining at least one candidate pilot. In the pattern, the position of the RE occupied by the non-zero power demodulation pilot signal.

Optionally, in at least one candidate demodulation pilot pattern, the time interval occupied by at least one non-zero power demodulation pilot signal is different from the time interval occupied by at least one zero power demodulation pilot signal, and the non-zero power demodulation pilot signal occupies a different time interval. The frequency bandwidth occupied by the zero-power demodulation pilot signal and the frequency bandwidth occupied by the zero-power demodulation pilot signal are also different.

Optionally, in at least one candidate demodulation pilot pattern, the time interval occupied by all the non-zero-power demodulation pilot signals is different from the time interval occupied by all the zero-power demodulation pilot signals.

Optionally, in at least one candidate demodulation pilot pattern, the frequency bandwidth occupied by all the non-zero-power demodulation pilot signals is different from the frequency bandwidth occupied by all the zero-power demodulation pilot signals.

Optionally, in at least one candidate demodulation pilot pattern, the time interval occupied by the non-zero-power demodulation pilot signal and the zero-power demodulation pilot signal in the frequency bandwidth where the adjacent demodulation pilot signals are located different; the time interval is the first time interval; and/or,

In at least one candidate demodulation pilot pattern, the non-zero-power demodulation pilot signal and the zero-power demodulation pilot signal occupy different frequency bandwidths in the time interval where the adjacent demodulation pilot signals are located; the The time interval is the first time interval.

Optionally, in at least one candidate demodulation pilot pattern, all the non-zero power demodulation pilot signals occupy the same time interval; the time interval is the first time interval.

Optionally, in at least one candidate demodulation pilot pattern, the frequency bandwidth occupied by the non-zero power demodulation pilot signal within the same time interval is distributed at equal intervals within the first frequency bandwidth; the time interval is the first frequency bandwidth. Two time intervals, the second time interval is a time interval smaller than the first time interval.

Optionally, in at least one candidate demodulation pilot pattern, the frequency bandwidth occupied by the non-zero power demodulation pilot signal is the same.

Optionally, in at least one candidate demodulation pilot pattern, the time intervals occupied by the non-zero power demodulation pilot signals within the same frequency bandwidth are equally spaced in a third time interval; the third time interval is a time interval larger than the first time interval.

Optionally, in at least one candidate demodulation pilot pattern, the time interval occupied by the non-zero power demodulation pilot signal in the frequency bandwidth where the adjacent demodulation pilot signal is located is different; the time interval is the first time interval. a time interval; and/or,

In at least one candidate demodulation pilot pattern, the non-zero-power demodulation pilot signals occupy different frequency bandwidths in time intervals where adjacent demodulation pilot signals are located; the time interval is the first time interval.

Optionally, in at least one candidate demodulation pilot pattern, the time interval occupied by the non-zero power demodulation pilot signal is distributed at equal intervals, and the occupied frequency bandwidth is distributed at equal intervals.

Optionally, in at least one candidate demodulation pilot pattern, all the zero-power demodulation pilot signals occupy the same time interval; the time interval is the first time interval.

Optionally, in the at least one candidate demodulation pilot pattern, the frequency bandwidth occupied by the zero-power demodulation pilot signal within the same time interval is distributed at equal intervals within the first frequency bandwidth, and the time interval is the second time interval. time interval, the second time interval is a time interval smaller than the first time interval.

Optionally, in at least one candidate demodulation pilot pattern, the frequency bandwidth occupied by the zero-power demodulation pilot signal is the same.

Optionally, in at least one candidate demodulation pilot pattern, the time intervals occupied by the zero-power demodulation pilot signals within the same frequency bandwidth are equally spaced in a third time interval; the third time interval is: A time interval greater than the first time interval.

Optionally, in at least one candidate demodulation pilot pattern, the time interval occupied by the zero-power demodulation pilot signal in the frequency bandwidth occupied by adjacent demodulation pilot signals is different; the time interval is the first time interval; and/or,

In at least one candidate demodulation pilot pattern, the zero-power demodulation pilot signals occupy different frequency bandwidths in time intervals occupied by adjacent demodulation pilot signals; the time interval is the first time interval.

Optionally, in at least one candidate demodulation pilot pattern, the time interval occupied by the zero-power demodulation pilot signal is distributed at equal intervals, and the occupied frequency bandwidth is distributed at equal intervals.

Optionally, the time interval includes a time length of a unit subframe, a time length of a unit time slot, or a time length of a unit OFDM symbol.

Optionally, the frequency bandwidth includes a frequency width of a unit subcarrier or a frequency width of a unit physical resource block PRB.

Optionally, the first network device receives the at least two candidate pilot patterns sent by the second network device through dynamic signaling or high-layer signaling.

Optionally, the first network device is a user equipment, and the second network device is a base station; or,

The first network device is user equipment, and the second network device is user equipment; or,

The first network device is a network device, and the second network device is a network device.

Specifically, the technical solutions of the present invention can be used for sending and receiving demodulation pilot patterns between network equipment and user equipment, and between network equipment and network equipment. Optionally, the dynamic signaling or high-layer signaling is cell-specific; or,

The dynamic signaling or higher layer signaling is user group specific; or,

The dynamic signaling or higher layer signaling is user specific.

Optionally, the first network device receives one pilot pattern among the at least two candidate pilot patterns sent by the second network device through dynamic signaling or high-layer signaling.

In this embodiment, the first network device obtains a demodulation pilot pattern according to the received demodulation pilot configuration information, and receives a demodulation pilot signal according to the corresponding demodulation pilot pattern; the demodulation pilot pattern is one of at least two candidate demodulation pilot patterns with the same number of ports, the number of ports being equal to the number of layers of the data stream; wherein at least two candidate demodulation pilot patterns with the same number of ports are different, and at least one of the The candidate demodulation pilot pattern includes the physical resource unit RE occupied by the non-zero power demodulation pilot signal and the physical resource unit RE occupied by the zero power demodulation pilot signal, which realizes that different first network devices are configured with different demodulation pilots. The frequency pattern avoids interference to other first network devices, so the number of multiplexed users can be increased, and the problem that the configuration of the DMRS in the prior art cannot meet the pilot frequency multiplexing of the increased users is solved.

FIG. 14 is a schematic structural diagram of Embodiment 1 of a second network device according to the present invention. As shown in FIG. 14 , the second network device 140 provided in this embodiment includes: a mapping module 1401 and a sending module 1402; wherein the mapping module 1401 is configured to determine in at least two candidate demodulation pilot patterns with the same number of ports One, the demodulation pilot signal is mapped to the time-frequency resource corresponding to the demodulation pilot pattern, and the number of ports is equal to the number of layers of the data stream; wherein, the at least two demodulation candidates with the same number of ports The pilot patterns are different, and at least one of the candidate demodulation pilot patterns includes a physical resource element RE occupied by a non-zero-power demodulation pilot signal and a physical resource element RE occupied by a zero-power demodulation pilot signal;

The sending module 1402 is configured to send the mapped demodulation pilot signal and the configuration information of the demodulation pilot signal to the first network device.

Optionally, the at least two candidate demodulation pilot patterns with the same port number are different, including:

In at least one candidate demodulation pilot pattern, the position of the RE occupied by the non-zero-power demodulation pilot signal corresponds to the position of the RE occupied by the zero-power demodulation pilot signal in the remaining at least one candidate pilot pattern .

Optionally, the at least two candidate demodulation pilot patterns with the same port number are different, including:

In at least one candidate demodulation pilot pattern, the positions of the REs occupied by all the non-zero-power demodulation pilot signals and the positions of the REs occupied by all the zero-power demodulation pilot signals correspond to the remaining at least one candidate pilot. In the pattern, the position of the RE occupied by the non-zero power demodulation pilot signal.

Optionally, in at least one candidate demodulation pilot pattern, the time interval occupied by at least one non-zero power demodulation pilot signal is different from the time interval occupied by at least one zero power demodulation pilot signal, and the non-zero power demodulation pilot signal occupies a different time interval. The frequency bandwidth occupied by the zero-power demodulation pilot signal and the frequency bandwidth occupied by the zero-power demodulation pilot signal are also different.

Optionally, in at least one candidate demodulation pilot pattern, the time interval occupied by all the non-zero-power demodulation pilot signals is different from the time interval occupied by all the zero-power demodulation pilot signals.

Optionally, in at least one candidate demodulation pilot pattern, the frequency bandwidth occupied by all the non-zero-power demodulation pilot signals is different from the frequency bandwidth occupied by all the zero-power demodulation pilot signals.

Optionally, in at least one candidate demodulation pilot pattern, the time interval occupied by the non-zero-power demodulation pilot signal and the zero-power demodulation pilot signal in the frequency bandwidth where the adjacent demodulation pilot signals are located different; the time interval is the first time interval; and/or,

In at least one candidate demodulation pilot pattern, the non-zero-power demodulation pilot signal and the zero-power demodulation pilot signal occupy different frequency bandwidths in the time interval where the adjacent demodulation pilot signals are located; the The time interval is the first time interval.

Optionally, in at least one candidate demodulation pilot pattern, all the non-zero power demodulation pilot signals occupy the same time interval; the time interval is the first time interval.

Optionally, in at least one candidate demodulation pilot pattern, the frequency bandwidth occupied by the non-zero power demodulation pilot signal within the same time interval is distributed at equal intervals within the first frequency bandwidth; the time interval is the first frequency bandwidth. Two time intervals, the second time interval is a time interval smaller than the first time interval.

Optionally, in at least one candidate demodulation pilot pattern, the frequency bandwidth occupied by the non-zero power demodulation pilot signal is the same.

Optionally, in at least one candidate demodulation pilot pattern, the time intervals occupied by the non-zero power demodulation pilot signals within the same frequency bandwidth are equally spaced in a third time interval; the third time interval is a time interval larger than the first time interval.

Optionally, in at least one candidate demodulation pilot pattern, the time interval occupied by the non-zero power demodulation pilot signal in the frequency bandwidth where the adjacent demodulation pilot signal is located is different; the time interval is the first time interval. a time interval; and/or,

In at least one candidate demodulation pilot pattern, the non-zero-power demodulation pilot signals occupy different frequency bandwidths in time intervals where adjacent demodulation pilot signals are located; the time interval is the first time interval.

Optionally, in at least one candidate demodulation pilot pattern, the time interval occupied by the non-zero power demodulation pilot signal is distributed at equal intervals, and the occupied frequency bandwidth is distributed at equal intervals.

Optionally, in at least one candidate demodulation pilot pattern, all the zero-power demodulation pilot signals occupy the same time interval; the time interval is the first time interval.

Optionally, in the at least one candidate demodulation pilot pattern, the frequency bandwidth occupied by the zero-power demodulation pilot signal within the same time interval is distributed at equal intervals within the first frequency bandwidth, and the time interval is the second time interval. time interval, the second time interval is a time interval smaller than the first time interval.

Optionally, in at least one candidate demodulation pilot pattern, the frequency bandwidth occupied by the zero-power demodulation pilot signal is the same.

Optionally, in at least one candidate demodulation pilot pattern, the time intervals occupied by the zero-power demodulation pilot signals within the same frequency bandwidth are equally spaced in a third time interval; the third time interval is: A time interval greater than the first time interval.

Optionally, in at least one candidate demodulation pilot pattern, the time interval occupied by the zero-power demodulation pilot signal in the frequency bandwidth occupied by adjacent demodulation pilot signals is different; the time interval is the first time interval; and/or,

In at least one candidate demodulation pilot pattern, the zero-power demodulation pilot signals occupy different frequency bandwidths in time intervals occupied by adjacent demodulation pilot signals; the time interval is the first time interval.

Optionally, in at least one candidate demodulation pilot pattern, the time interval occupied by the zero-power demodulation pilot signal is distributed at equal intervals, and the occupied frequency bandwidth is distributed at equal intervals.

Optionally, the time interval includes a time length of a unit subframe, a time length of a unit time slot, or a time length of a unit OFDM symbol.

Optionally, the frequency bandwidth includes a frequency width of a unit subcarrier or a frequency width of a unit physical resource block PRB.

Optionally, the at least two candidate pilot patterns are sent to the first network device through dynamic signaling or high-layer signaling.

Optionally, the dynamic signaling or high-layer signaling is cell-specific; or,

The dynamic signaling or higher layer signaling is user group specific; or,

The dynamic signaling or higher layer signaling is user specific.

Optionally, one pilot pattern among the at least two candidate pilot patterns is sent to the first network device through dynamic signaling or high-layer signaling.

The network device in this embodiment can be used to execute the technical solutions described in any one of the first to third method embodiments, and the implementation principles and technical effects thereof are similar, and are not repeated here.

FIG. 15 is a schematic structural diagram of Embodiment 1 of a first network device according to the present invention. As shown in FIG. 15 , the first network device 150 provided in this embodiment includes: an acquisition module 1501; wherein the acquisition module 1501 is configured to acquire a demodulation pilot pattern according to the received demodulation pilot configuration information, and according to the corresponding demodulation pilot pattern The demodulation pilot pattern receives the demodulation pilot signal; the demodulation pilot pattern is one of at least two candidate demodulation pilot patterns with the same number of ports, and the number of ports is equal to the number of layers of the data stream ;

Wherein, the at least two candidate demodulation pilot patterns with the same number of ports are different, and at least one of the candidate demodulation pilot patterns includes physical resource elements RE occupied by non-zero power demodulation pilot signals and zero power demodulation pilot patterns. The physical resource unit RE occupied by the modulation pilot signal.

Optionally, the at least two candidate demodulation pilot patterns with the same port number are different, including:

In at least one candidate demodulation pilot pattern, the position of the RE occupied by the non-zero-power demodulation pilot signal corresponds to the position of the RE occupied by the zero-power demodulation pilot signal in the remaining at least one candidate pilot pattern .

Optionally, the at least two candidate demodulation pilot patterns with the same port number are different, including:

In at least one candidate demodulation pilot pattern, the positions of the REs occupied by all the non-zero-power demodulation pilot signals and the positions of the REs occupied by all the zero-power demodulation pilot signals correspond to the remaining at least one candidate pilot. In the pattern, the position of the RE occupied by the non-zero power demodulation pilot signal.

Optionally, in at least one candidate demodulation pilot pattern, the time interval occupied by at least one non-zero power demodulation pilot signal is different from the time interval occupied by at least one zero power demodulation pilot signal, and the non-zero power demodulation pilot signal occupies a different time interval. The frequency bandwidth occupied by the zero-power demodulation pilot signal and the frequency bandwidth occupied by the zero-power demodulation pilot signal are also different.

Optionally, in at least one candidate demodulation pilot pattern, the time interval occupied by all the non-zero-power demodulation pilot signals is different from the time interval occupied by all the zero-power demodulation pilot signals.

Optionally, in at least one candidate demodulation pilot pattern, the frequency bandwidth occupied by all the non-zero-power demodulation pilot signals is different from the frequency bandwidth occupied by all the zero-power demodulation pilot signals.

Optionally, in at least one candidate demodulation pilot pattern, the time interval occupied by the non-zero-power demodulation pilot signal and the zero-power demodulation pilot signal in the frequency bandwidth where the adjacent demodulation pilot signals are located different; the time interval is the first time interval; and/or,

In at least one candidate demodulation pilot pattern, the non-zero-power demodulation pilot signal and the zero-power demodulation pilot signal occupy different frequency bandwidths in the time interval where the adjacent demodulation pilot signals are located; the The time interval is the first time interval.

Optionally, in at least one candidate demodulation pilot pattern, all the non-zero power demodulation pilot signals occupy the same time interval; the time interval is the first time interval.

Optionally, in at least one candidate demodulation pilot pattern, the frequency bandwidth occupied by the non-zero power demodulation pilot signal within the same time interval is distributed at equal intervals within the first frequency bandwidth; the time interval is the first frequency bandwidth. Two time intervals, the second time interval is a time interval smaller than the first time interval.

Optionally, in at least one candidate demodulation pilot pattern, the frequency bandwidth occupied by the non-zero power demodulation pilot signal is the same.

Optionally, in at least one candidate demodulation pilot pattern, the time intervals occupied by the non-zero power demodulation pilot signals within the same frequency bandwidth are equally spaced in a third time interval; the third time interval is a time interval larger than the first time interval.

Optionally, in at least one candidate demodulation pilot pattern, the time interval occupied by the non-zero power demodulation pilot signal in the frequency bandwidth where the adjacent demodulation pilot signal is located is different; the time interval is the first time interval. a time interval; and/or,

In at least one candidate demodulation pilot pattern, the non-zero-power demodulation pilot signals occupy different frequency bandwidths in time intervals where adjacent demodulation pilot signals are located; the time interval is the first time interval.

Optionally, in at least one candidate demodulation pilot pattern, the time interval occupied by the non-zero power demodulation pilot signal is distributed at equal intervals, and the occupied frequency bandwidth is distributed at equal intervals.

Optionally, in at least one candidate demodulation pilot pattern, all the zero-power demodulation pilot signals occupy the same time interval; the time interval is the first time interval.

Optionally, in the at least one candidate demodulation pilot pattern, the frequency bandwidth occupied by the zero-power demodulation pilot signal within the same time interval is distributed at equal intervals within the first frequency bandwidth, and the time interval is the second time interval. time interval, the second time interval is a time interval smaller than the first time interval.

Optionally, in at least one candidate demodulation pilot pattern, the frequency bandwidth occupied by the zero-power demodulation pilot signal is the same.

Optionally, in at least one candidate demodulation pilot pattern, the time intervals occupied by the zero-power demodulation pilot signals within the same frequency bandwidth are equally spaced in a third time interval; the third time interval is: A time interval greater than the first time interval.

Optionally, in at least one candidate demodulation pilot pattern, the time interval occupied by the zero-power demodulation pilot signal in the frequency bandwidth occupied by adjacent demodulation pilot signals is different; the time interval is the first time interval; and/or,

In at least one candidate demodulation pilot pattern, the zero-power demodulation pilot signals occupy different frequency bandwidths in time intervals occupied by adjacent demodulation pilot signals; the time interval is the first time interval.

Optionally, in at least one candidate demodulation pilot pattern, the time interval occupied by the zero-power demodulation pilot signal is distributed at equal intervals, and the occupied frequency bandwidth is distributed at equal intervals.

Optionally, the time interval includes a time length of a unit subframe, a time length of a unit time slot, or a time length of a unit OFDM symbol.

Optionally, the frequency bandwidth includes a frequency width of a unit subcarrier or a frequency width of a unit physical resource block PRB.

Optionally, the obtaining module 1501 is specifically configured to: receive the at least two candidate pilot patterns sent by the second network device through dynamic signaling or high-layer signaling.

Optionally, the first network device is a user equipment, and the second network device is a base station; or,

The first network device is user equipment, and the second network device is user equipment; or,

The first network device is a network device, and the second network device is a network device.

Optionally, the dynamic signaling or high-layer signaling is cell-specific; or,

The dynamic signaling or higher layer signaling is user group specific; or,

The dynamic signaling or higher layer signaling is user specific.

Optionally, the obtaining module 1501 is specifically configured to: receive one pilot pattern among the at least two candidate pilot patterns sent by the second network device through dynamic signaling or high-layer signaling.

The first network device in this embodiment can be used to execute the technical solution described in the fourth embodiment of the method, and its implementation principle and technical effect are similar, and details are not repeated here.

FIG. 16 is a schematic structural diagram of Embodiment 2 of a second network device according to the present invention. As shown in FIG. 16 , the second network device 160 provided in this embodiment includes a processor 1601 and a memory 1602 . The second network device 160 may further include a transmitter 1603 and a receiver 1604 . The transmitter 1603 and the receiver 1604 may be connected to the processor 1601 . The transmitter 1603 is used to send data or information, the receiver 1604 is used to receive data or information, and the memory 1602 stores execution instructions. When the second network device 160 is running, the processor 1601 communicates with the memory 1602. The processor 1601 The execution instructions in the memory 1602 are invoked to execute the technical solutions described in any one of the first to third method embodiments, and the implementation principles and technical effects thereof are similar, and are not repeated here.

FIG. 17 is a schematic structural diagram of Embodiment 2 of the first network device according to the present invention. As shown in FIG. 17 , the first network device 170 provided in this embodiment includes a processor 1701 and a memory 1702 . The first network device 170 may further include a transmitter 1703 and a receiver 1704 . The transmitter 1703 and the receiver 1704 may be connected to the processor 1701 . The transmitter 1703 is used to send data or information, the receiver 1704 is used to receive data or information, and the memory 1702 stores execution instructions. When the first network device 170 is running, the processor 1701 communicates with the memory 1702. The processor 1701 The execution instruction in the memory 1702 is called to execute the technical solution described in the fourth embodiment of the method, and the implementation principle and technical effect thereof are similar, and are not repeated here.

In the several embodiments provided in this application, it should be understood that the disclosed apparatus and method may be implemented in other manners. For example, the device embodiments described above are only illustrative. For example, the division of the units or modules is only a logical function division. In actual implementation, there may be other division methods. For example, multiple units or modules may be divided into Incorporation may either be integrated into another system, or some features may be omitted, or not implemented. On the other hand, the shown or discussed mutual coupling or direct coupling or communication connection may be through some interfaces, indirect coupling or communication connection of devices or modules, and may be in electrical, mechanical or other forms.

The modules described as separate components may or may not be physically separated, and the components shown as modules may or may not be physical modules, that is, may be located in one place, or may be distributed to multiple network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution in this embodiment.

Those of ordinary skill in the art can understand that all or part of the steps of implementing the above method embodiments may be completed by program instructions related to hardware. The aforementioned program can be stored in a computer-readable storage medium. When the program is executed, the steps including the above method embodiments are executed; and the aforementioned storage medium includes: ROM, RAM, magnetic disk or optical disk and other media that can store program codes.

Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, but not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: The technical solutions described in the foregoing embodiments can still be modified, or some or all of the technical features thereof can be equivalently replaced; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the technical solutions of the embodiments of the present invention. scope.

Claims (35)

1. An information transmission method, comprising:

determining a demodulation pilot frequency pattern in at least two candidate demodulation pilot frequency patterns with the same port number, and mapping a demodulation pilot frequency signal to a time frequency resource corresponding to the demodulation pilot frequency pattern, wherein the port number is equal to the layer number of a data stream;

wherein the at least two candidate demodulation pilot patterns with the same port number are different, the demodulation pilot patterns comprise a first physical resource unit and a second physical resource unit,

the first physical resource unit is a physical resource unit occupied by a non-zero power demodulation pilot signal of first user equipment, and the second physical resource unit is a physical resource unit not containing the non-zero power demodulation pilot signal and data of the first user equipment;

and sending the mapped demodulation pilot signal and the configuration information of the demodulation pilot signal to the first user equipment.

2. The method of claim 1, wherein the at least two candidate demodulation pilot patterns with the same port number are different, comprising:

the second physical resource unit in the demodulation pilot pattern corresponds to a position of a physical resource unit occupied by a non-zero power demodulation pilot signal of a third user equipment in the rest at least one candidate pilot pattern, and the third user equipment is user equipment different from the first user equipment.

3. The method of claim 1, wherein the at least two candidate demodulation pilot patterns with the same port number are different, comprising:

in the demodulation pilot pattern, the positions of all the first physical resource units and the positions of all the second physical resource units correspond to the positions of physical resource units occupied by the non-zero power demodulation pilot signals of the third user equipment in the rest at least one candidate pilot pattern.

4. The method according to claim 1 or 2, wherein the frequency bandwidth occupied by all the first physical resource elements and the frequency bandwidth occupied by all the second physical resource elements in the demodulation pilot pattern are different.

5. The method of claim 4, wherein the demodulation pilot pattern occupies the same time interval for all the first physical resource units; the time interval is a first time interval.

6. The method according to any of claims 1-5, wherein the at least two candidate demodulation pilot patterns are sent to the first user equipment by dynamic signaling or higher layer signaling.

7. The method of claim 6, wherein the dynamic signaling or higher layer signaling is cell-specific; or the like, or, alternatively,

the dynamic signaling or higher layer signaling is user group specific; or the like, or, alternatively,

the dynamic signaling or higher layer signaling is user specific.

8. The method according to claim 7, wherein one of the at least two candidate demodulation pilot patterns is sent to the first user equipment through dynamic signaling or higher layer signaling.

9. An information transmission method, comprising:

obtaining a demodulation pilot pattern according to the received demodulation pilot configuration information, and receiving a demodulation pilot signal according to the corresponding demodulation pilot pattern; the demodulation pilot pattern is one of at least two candidate demodulation pilot patterns with the same port number, and the port number is equal to the layer number of the data stream;

the at least two candidate demodulation pilot patterns with the same port number are different, each demodulation pilot pattern includes a first physical resource unit and a second physical resource unit, the first physical resource unit is a physical resource unit occupied by a non-zero power demodulation pilot signal of the first user equipment, and the second physical resource unit is a physical resource unit not containing the non-zero power demodulation pilot signal and data of the first user equipment.

10. The method of claim 9, wherein the at least two candidate demodulation pilot patterns with the same port number are different, comprising:

the second physical resource unit in the demodulation pilot pattern corresponds to a position of a physical resource unit occupied by a non-zero power demodulation pilot signal of a third user equipment in the rest at least one candidate pilot pattern, and the third user equipment is user equipment different from the first user equipment.

11. The method of claim 9, wherein the at least two candidate demodulation pilot patterns with the same port number are different, comprising:

in the demodulation pilot pattern, the positions occupied by all the first physical resource units and the positions occupied by all the second physical resource units correspond to the positions of the physical resource units occupied by the non-zero power demodulation pilot signals of the third user equipment in the rest at least one candidate pilot pattern.

12. The method according to claim 9 or 10, wherein the frequency bandwidth occupied by all the first physical resource elements in the demodulation pilot pattern is different from the frequency bandwidth occupied by all the second physical resource elements.

13. The method of claim 12, wherein the demodulation pilot pattern occupies the same time interval for all the first physical resource units; the time interval is a first time interval.

14. The method according to any of claims 9-13, wherein said first user equipment receives said at least two candidate demodulation pilot patterns transmitted by dynamic signaling or higher layer signaling.

15. The method of claim 14, wherein the dynamic signaling or higher layer signaling is cell-specific; or the like, or, alternatively,

the dynamic signaling or higher layer signaling is user group specific; or the like, or, alternatively,

the dynamic signaling or higher layer signaling is user specific.

16. The method of claim 15, wherein the first user equipment receives one of the at least two candidate demodulation pilot patterns transmitted by dynamic signaling or higher layer signaling.

17. An information transmission apparatus, comprising:

a processor, configured to determine a demodulation pilot pattern from at least two candidate demodulation pilot patterns with the same port number, and map a demodulation pilot signal to a time-frequency resource corresponding to the demodulation pilot pattern, where the port number is equal to the number of layers of a data stream;

wherein the at least two candidate demodulation pilot patterns with the same port number are different, the demodulation pilot patterns comprise a first physical resource unit and a second physical resource unit,

the first physical resource unit is a physical resource unit occupied by a non-zero power demodulation pilot signal of first user equipment, and the second physical resource unit is a physical resource unit not containing the non-zero power demodulation pilot signal and data of the first user equipment;

a transmitter, configured to send the mapped demodulation pilot signal and the configuration information of the demodulation pilot signal to the first user equipment.

18. The apparatus of claim 17, wherein the at least two candidate demodulation pilot patterns with the same port number are different, comprising:

the second physical resource unit in the demodulation pilot pattern corresponds to a position of a physical resource unit occupied by a non-zero power demodulation pilot signal of a third user equipment in the rest at least one candidate pilot pattern, and the third user equipment is user equipment different from the first user equipment.

19. The apparatus of claim 17, wherein the at least two candidate demodulation pilot patterns with the same port number are different, comprising:

in the demodulation pilot frequency pattern, the positions of all the first physical resource units and the positions of all the second physical resource units correspond to the positions of physical resource units occupied by the non-zero power demodulation pilot frequency signals of the third user equipment in the rest at least one candidate pilot frequency pattern.

20. The apparatus according to claim 17 or 18, wherein the demodulation pilot pattern comprises a frequency bandwidth occupied by all of the first physical resource elements and a frequency bandwidth occupied by all of the second physical resource elements that are different.

21. The apparatus of claim 20, wherein the demodulation pilot pattern occupies the same time interval for all the first physical resource units; the time interval is a first time interval.

22. The apparatus according to any of claims 17-21, wherein the at least two candidate demodulation pilot patterns are signaled to the first user equipment via dynamic signaling or higher layer signaling.

23. The apparatus of claim 22, wherein the dynamic signaling or higher layer signaling is cell-specific; or the like, or, alternatively,

the dynamic signaling or higher layer signaling is user group specific; or the like, or, alternatively,

the dynamic signaling or higher layer signaling is user specific.

24. The apparatus of claim 23, wherein one of the at least two candidate demodulation pilot patterns is sent to the first user equipment through dynamic signaling or higher layer signaling.

25. An information transmission apparatus, comprising:

the processor is used for obtaining a demodulation pilot frequency pattern according to the received demodulation pilot frequency configuration information and receiving a demodulation pilot frequency signal according to the corresponding demodulation pilot frequency pattern; the demodulation pilot pattern is one of at least two candidate demodulation pilot patterns with the same port number, and the port number is equal to the layer number of the data stream;

the at least two candidate demodulation pilot patterns with the same port number are different, each demodulation pilot pattern includes a first physical resource unit and a second physical resource unit, the first physical resource unit is a physical resource unit occupied by a non-zero power demodulation pilot signal of the first user equipment, and the second physical resource unit is a physical resource unit not containing the non-zero power demodulation pilot signal and data of the first user equipment.

26. The apparatus of claim 25, wherein the at least two candidate demodulation pilot patterns with the same port number are different, comprising:

the second physical resource unit in the demodulation pilot pattern corresponds to a position of a physical resource unit occupied by a non-zero power demodulation pilot signal of a third user equipment in the rest at least one candidate pilot pattern, and the third user equipment is user equipment different from the first user equipment.

27. The apparatus of claim 25, wherein the at least two candidate demodulation pilot patterns with the same port number are different, comprising:

in the demodulation pilot pattern, the positions occupied by all the first physical resource units and the positions occupied by all the second physical resource units correspond to the positions occupied by the non-zero power demodulation pilot signals of the third user equipment in the rest at least one candidate pilot pattern.

28. The apparatus according to claim 25 or 26, wherein the demodulation pilot pattern comprises a frequency bandwidth occupied by all of the first physical resource elements different from a frequency bandwidth occupied by all of the second physical resource elements.

29. The apparatus of claim 28, wherein the demodulation pilot pattern occupies the same time interval for all the first physical resource units; the time interval is a first time interval.

30. The apparatus according to any one of claims 25 to 29, wherein the obtaining module is specifically configured to: receiving the at least two candidate demodulation pilot patterns transmitted through dynamic signaling or higher layer signaling.

31. The apparatus of claim 30, wherein the dynamic signaling or higher layer signaling is cell-specific; or the like, or, alternatively,

the dynamic signaling or higher layer signaling is user group specific; or the like, or, alternatively,

the dynamic signaling or higher layer signaling is user specific.

32. The apparatus of claim 31, wherein the obtaining module is specifically configured to: receiving one of the at least two candidate demodulation pilot patterns transmitted through dynamic signaling or higher layer signaling.

33. A communications apparatus, comprising:

a processor and a memory, the memory storing execution instructions that, when the communication device is operating, communicate between the processor and the memory, the execution of the execution instructions by the processor causing the communication device to perform the method of any of claims 1-8.

34. A communications apparatus, comprising:

a processor and a memory, the memory storing execution instructions that, when the communication device is operating, communicate between the processor and the memory, execution of the execution instructions by the processor causing the communication device to perform the method of any of claims 9-16.

35. A computer-readable storage medium, wherein a computer program is stored on the readable storage medium; the computer program when executed implements a method as claimed in any one of claims 1 to 8 or 9 to 16.

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