WO2014012233A1

WO2014012233A1 - Method for transmitting control signaling, method for receiving same, network device, and ue

Info

Publication number: WO2014012233A1
Application number: PCT/CN2012/078876
Authority: WO
Inventors: 周明宇; 曾清海
Original assignee: 华为技术有限公司
Priority date: 2012-07-19
Filing date: 2012-07-19
Publication date: 2014-01-23
Also published as: CN103703733A

Abstract

A method for transmitting a control signaling, a method for receiving same, a network device, and a UE. The transmission method comprises: determining a cyclic prefix (CP) type corresponding to a data signal in a multicast-broadcast single-frequency network (MBSFN) subframe; generating a control signaling in the MBSFN subframe according to the CP type; and, on the MBSFN subframe, transmitting the control signaling via a frequency different from that of the data signal. In embodiments of the present invention, because a data domain signal and control domain signal in the MBSFN subframe are transmitted by using a frequency-division multiplexing scheme, flexible adjustment of a frequency domain resource occupied by a control domain is allowed on the basis of the magnitude of the control signaling transmitted, thus allowing for effective utilization of system bandwidth; also, when different network devices are transmitting the control signaling to UE of selves on a same MBSFN subframe, because the different network devices are allowed to employ the different frequencies to transmit the control signaling of selves, co-channel interferences among the control signaling transmitted by these network devices are prevented.

Description

Control signaling transmission method, receiving method, network device and UE

Technical field

The present invention relates to the field of communications technologies, and in particular, to a control signaling transmission method, a receiving method, a network device, and a user equipment (User Equipment, UE). Background Art In an existing communication system, time domain resources are usually divided according to a fixed length. For example, in the Long Term Evolution (LTE) system, the fixed length is lms, and the length of each lms is called a subframe. Each subframe is divided into several symbols of the same size in the time domain. The subframe type can be divided into a normal subframe and a Multimedia Broadcast Single Frequency Network (MBSFN) subframe. For the MBSFN subframe, the network device may send a Multicast Broadcast and Multicast Service (MBMS) signal in a broadcast or multicast manner in the MBSFN subframe, or send the unicast mode in the MBSFN subframe. MBMS signal.

Each MBSFN subframe is divided in time into a control domain for transmitting control signaling and a data domain for transmitting data signals, and the above control domain and data domain are multiplexed by Time Division Multiplexing (TDM). . Usually, the control domain occupies a number of symbols preceding the SFN subframe (for example, the first two symbols), and the remaining symbols on the MBSFN subframe except the control domain correspond to the data field. The above control domain and data domain occupy the entire system bandwidth in the frequency domain.

In the MBSFN subframe, since the control domain fixedly occupies the first few symbols of the MBSFN subframe, when the network device needs to transmit less control signaling, the control signaling is difficult to occupy all the control domain symbols for transmission, and therefore the system Bandwidth is wasteful; and, when different network devices transmit control signaling on the same MBSFN subframe, for UEs that receive control signaling transmitted by a certain network device, the frequency of control signaling transmitted by different network devices The same, so that the control signaling that the UE receives the network device transmission will be interfered by the same frequency control signal transmitted by other network devices. SUMMARY OF THE INVENTION The embodiments of the present invention provide a method for transmitting control signaling, a receiving method, a network device, and a UE, to solve the problem that the transmission control signaling in the prior art is easy to waste system bandwidth and generate co-channel interference. In order to solve the above technical problem, the embodiment of the present invention discloses the following technical solution: On the one hand, a method for transmitting control signaling is provided, where the method includes:

Determining a cyclic prefix CP type corresponding to the data signal in the MBSFN subframe;

Generating control signaling in the MBSFN subframe according to the CP type;

The control signaling is transmitted on a different frequency than the data signal on the MBSFN subframe. In another aspect, a method for receiving control signaling is provided, where the method includes:

Receiving, by the network device, the control signaling that is transmitted on the MBSFN subframe, where the control signaling is the control signaling generated by the CP type after the network device determines the CP type corresponding to the data signal in the MBSFN subframe, The control signaling is transmitted at a different frequency than the data signal;

Decoding the control signaling to obtain control information.

In one aspect, a network device is provided, where the network device includes:

a determining unit, configured to determine a CP type corresponding to the data signal in the MBSFN subframe;

a generating unit, configured to generate, according to the CP type determined by the determining unit, control signaling in the MBSFN subframe;

And a transmitting unit, configured to transmit, by using the MBSFN subframe, control signaling generated by the generating unit by using a frequency different from the data signal.

In another aspect, a UE is provided, where the UE includes:

a first receiving unit, configured to receive control signaling that is transmitted by the network device on the MBSFN subframe, where the control signaling is used by the network device to determine a CP type corresponding to the data signal in the MBSFN subframe, according to the CP Type generated control signaling, the control signaling being transmitted at a different frequency than the data signal;

And a decoding unit, configured to decode control signaling received by the receiving unit to obtain control information. In the embodiment of the present invention, the network device determines the CP type corresponding to the data signal in the MBSFN subframe, and generates control signaling in the MBSFN subframe according to the CP type, where the control signaling is different from the data signal in the MBSFN subframe. The frequency is transmitted to the UE so that the UE can decode the control signaling to obtain control information. In the embodiment of the present invention, the data domain signal and the control domain signal in the MBSFN subframe are transmitted in a frequency division multiplexing manner, and the frequency domain resources occupied by the control domain may be flexibly adjusted according to the size of the transmitted control signaling, thereby Effectively utilizing system bandwidth; and, when different network devices transmit control signaling to respective UEs on the same MBSFN subframe, since different network devices can transmit respective control signaling using different frequencies, these network devices are avoided. The same-frequency interference between the transmitted control signaling ensures that the UE can correctly receive the control signaling. DRAWINGS

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings to be used in the embodiments or the description of the prior art will be briefly described below. Obviously, the drawings in the following description are only It is a certain embodiment of the present invention, and other drawings can be obtained from those skilled in the art without any inventive labor.

1 is a flowchart of an embodiment of a method for transmitting control signaling according to the present invention;

2 is a flow chart of another embodiment of a method for transmitting control signaling according to the present invention;

3A is a schematic structural diagram of an MBSFN subframe for transmitting a unicast signal;

3B is a schematic structural diagram of an MBSFN subframe for transmitting an MBMS signal;

3C is a schematic diagram of two network devices transmitting control signaling to the same UE;

4 is a flowchart of an embodiment of a method for receiving control signaling according to the present invention;

Figure 5 is a block diagram of an embodiment of a network device of the present invention;

6 is a block diagram of another embodiment of a network device of the present invention;

7 is a block diagram of an embodiment of a UE according to the present invention;

8 is a block diagram of another embodiment of a UE according to the present invention;

FIG. 9 is a block diagram of another embodiment of a UE according to the present invention. The following embodiments provide a method for transmitting control signaling, a receiving method, a network device, and a UE, to implement control signaling and a transmitted data signal when a network device transmits control signaling on an MBSFN subframe. (Including the MBMS signal and/or the non-MBMS signal, that is, the data signal transmitted in the unicast mode), the frequency division multiplexing (FDM) method is used to distinguish between the two, so that the appropriate resources can be selected according to the size of the control signaling. .

In a communication system, Cyclic Prefix (CP) technology is usually used to combat inter-symbol interference caused by multipath characteristics of wireless channels. For a unicast signal transmitted by unicast, since the unicast signal is usually transmitted by one network device, the multipath characteristic of the wireless channel is not obvious, and a shorter CP can be used in the MBSFN subframe in which the unicast signal is transmitted. In the LTE system, it is also called normal CP. For the MBMS signal transmitted by multicast or multicast, since the MBMS signal is usually transmitted by multiple network devices, the multipath characteristic of the wireless channel is obvious, and the corresponding transmission is performed. A longer CP is used on the MBSFN subframe of the MBMS signal, and is also called an extended CP in the LTE system.

In the existing communication system, for the control domain in each MBSFN subframe, since it is usually transmitted in unicast mode Therefore, the UE can always receive control signaling with the normal CP as a hypothesis; for each data field in the MBSFN subframe, it can be distinguished as follows: When the MBSFN subframe is a sub-broadcast transmission signal a frame, the network device instructs the UE to receive the unicast signal on the subframe, and correspondingly, the UE receives the data signal on the assumption of the normal CP; when the MBSFN subframe is a subframe for transmitting the MBMS signal, the network device indicates that the UE is The MBMS signal is received on the subframe, and correspondingly, the UE receives the data signal on the assumption that the extended CP is assumed.

In the embodiment of the present invention, since the control domain and the data domain in the MBSFN subframe are multiplexed by using the FDM mode, the control domain and the data domain occupy all symbols on one MBSFN subframe at the same time, so the control signaling and the data signal are simultaneously performed. Transmission, the CP used by both is the same. It can be seen that, in the prior art, all control signaling is transmitted in a unicast manner, and thus the CP type corresponding to the control signaling is fixed; different from the prior art, in the embodiment of the present invention, correspondingly used The CP type that receives the control signaling needs to be the same as the data signal, so the CP type corresponding to the control signaling is not fixed. In the embodiment of the present invention, the control signaling and the data signal are frequency division multiplexed, and the control channel carrying the control signaling may be referred to as an enhanced control channel (eCCH). The above-mentioned objects, features, and advantages of the embodiments of the present invention will become more apparent and understood. Give further details.

Referring to FIG. 1, which is a flowchart of an embodiment of a method for transmitting control signaling according to the present invention:

Step 101: The network device determines a CP type corresponding to the data signal in the MBSFN subframe.

When the data signal in the MBSFN subframe is a unicast signal transmitted in a unicast manner, the network device determines that the CP type corresponding to the data signal in the MBSFN subframe is normal CP; when the data signal in the MBSFN subframe is When the MBMS signal is transmitted in the broadcast or multicast mode, the network device determines that the CP type corresponding to the data signal in the MBSFN subframe is an extended CP.

In the embodiment of the present invention, the network device may be a base station (BS), an access point (AP), a remote radio equipment (RRE), and a remote radio port (RRH). ), Remote Radio Unit (RRU), Relay Node (RN), etc. The relationship between the network device and the cell is not limited, and may be one network device corresponding to one or more cells, or one cell corresponding to one or more network devices.

Step 102: Generate control signaling in the MBSFN subframe according to the CP type.

In the embodiment of the present invention, since the control signaling and the data signal in the MBSFN subframe are multiplexed in an FDM manner, that is, both the control signaling and the data signal occupy the same symbol on one MBSFN subframe, the CP class used by the two is adopted. The type is consistent, that is, the data signal determined in step 101 corresponds to the CP type, that is, the CP type corresponding to the control signaling.

Step 103: On the MBSFN subframe, transmit control signaling by using a different frequency than the data signal. In the embodiment of the present invention, different frequencies may be different sub-carriers, or different frequency bands or different carrier frequencies, etc., which are not limited in this embodiment of the present invention.

It can be seen from the foregoing embodiment that the data domain signal and the control domain signal in the MBSFN subframe are transmitted in a frequency division multiplexing manner, and the frequency domain resources occupied by the control domain can be flexibly adjusted according to the size of the transmitted control signaling. Effectively utilizing system bandwidth; and, when different network devices transmit control signaling to respective UEs on the same MBSFN subframe, since different network devices can transmit respective control signaling using different frequencies, these network devices are avoided. Co-channel interference between the transmitted control signaling ensures that these UEs can correctly receive control signaling. Referring to FIG. 2, it is a flowchart of another embodiment of a method for transmitting control signaling according to the present invention:

Step 201: The network device determines a CP type corresponding to the data signal in the MBSFN subframe.

In this embodiment of the present invention, the network device may be a BS, an AP, an RRE, an RRH, an RRU, an RN, or the like. The relationship between the network device and the cell is not limited, and may be one network device corresponding to one or more cells, or one cell corresponding to one or more network devices.

Step 202: Send, to the UE, first information indicating a CP type corresponding to the data signal in the MBSFN subframe. In this embodiment, the first information may be transmitted in any one of the following manners:

The first way: sending the first information carried by the air interface signaling to the UE.

The air interface signaling may be physical layer signaling, media access control (MAC) layer signaling, or radio resource block (RRC) layer signaling.

The air interface signaling may be specifically broadcast signaling used to indicate information of an MBSFN subframe. The network device delivers the configuration information of the MBSFN subframe by sending broadcast signaling to the UE, where the configuration information with different attributes corresponds to different named data packets. Take the Long Term Evolution (LTE) system as an example. One type of signaling used to transmit broadcast signaling is System Information Block (SIB) signaling, and the broadcast name is SIB2 in SIB signaling. Let the information used to carry the MBSFN subframe, The SIB named SIB13 is used to carry information of MBSFN subframes reserved for transmitting MBMS signals in all MBSFN subframes. Correspondingly, after receiving the SIB2, the UE may determine the MBSFN subframe in all the received subframes according to the information of the MBSFN subframes carried in the SIB2. After receiving the SIB13, the UE may transmit the MBMS signal according to the bearer in the SIB13. The information of the reserved MBSFN subframe determines the MBSFN subframe reserved for the MBMS signal in all MBSFN subframes.

When the network device carries the first information in the SIB13 signaling, a field may be added to the SIB13 to indicate the CP type of the MBSFN subframe, and the information of the MBSFN subframe in the SIB13 may also be multiplexed. For example, in the LTE system, 10 subframes are included in one frame, and the above 10 subframes are represented by subframe n, where n is 0 to 9. The network device may notify the UE by sending the SIB2 signaling, and the subframe 1, the subframe 3, the subframe 6 and the subframe 8 in the frame are MBSFN subframes, and further notify the UE by sending the SIB13 signaling, and the subframe 1 and the subframe 3 are The reservation can be used to transmit the MBMS signal. After receiving the SIB13 signaling, the UE can determine that when the subframe 1 and the subframe 3 are received, the control signaling is received on the assumption of the extended CP.

The air interface signaling may be specifically a signaling packet for transmitting broadcast or multicast channel scheduling information. When the network device carries the first information in the signaling packet of the broadcast or multicast channel scheduling information, a information may be added to the signaling packet to indicate the CP type of the MBSFN subframe, and the signal may be multiplexed. Broadcast or multicast channel scheduling information in the order. For example, in the LTE system, the signaling used to transmit the broadcast or multicast channel scheduling information may be specifically Multicast Channel Scheduling Information (MSI) signaling, and the network device may send the MSI signaling to the UE. The MSI signaling is used to notify the UE of the MBSFN subframe for transmitting the MBMS signal. After receiving the MSI signaling, the UE may determine that the MBSFN subframe notified in the MSI signaling is received, and the control signaling is received on the assumption of the extended CP. .

The second mode is: sending the first information carried by the bitmap mapping manner to the UE.

When transmitting the first information to the UE in the form of a bitmap, the network device identifies the type information of each MBSFN subframe in a time period by using a bit value, where the MBSFN subframe that transmits the MBMS signal corresponds to the first bit value, The MBSFN subframe corresponding to the one-bit value uses the extended CP, and the other MBSFN subframes other than the MBSFN subframe in which the MBMS signal is transmitted correspond to the second bit value, and the MBSFN subframe corresponding to the second bit value uses the normal CP.

For example, if one cycle includes a total of 80 subframes, the network device sends 80 bits to the UE, and each bit is used to indicate the CP type of one subframe, wherein for each of the 80 bits, the bit value can be set. If the value is 1, the corresponding subframe is an MBSFN subframe for transmitting an MBMS signal, and the extended CP is used. When the bit value is 0, the corresponding subframe is an MBSFN subframe for transmitting a unicast signal, or may be an ordinary For sub-frames, these sub-frames all use normal CP. When the UE receives each subframe, according to the subframe in one cycle The number of the bit corresponding to the subframe is obtained. When the bit value is 1, the control signaling on the subframe is received on the assumption that the extended CP is assumed. When the bit value is 0, the normal CP is used as a hypothesis to receive the Control signaling on the subframe.

A third mode: transmitting, to the UE, first information including a set of MBSFN subframes using the first type of CP. The network device may send the first information including the subframe set to the UE, for example, the subframe numbers included in the set are 1 and 8. After receiving the first information, the UE determines that the number is 1 when each frame is received. When the subframe of 8 is received, the control signaling is received on the assumption of extended CP. In this embodiment, the subframe included in the subframe set is the MBSFN subframe used for transmitting the MBMS signal.

Step 203: Generate control signaling in the MBSFN subframe according to the CP type.

In the embodiment of the present invention, the control signaling and the data signal in the MBSFN subframe are multiplexed in an FDM manner, that is, the control signaling and the data signal occupy the same symbol on one MBSFN subframe, so the CP types used by the two are the same. That is, the data signal determined in step 201 corresponds to the CP type, that is, the CP type corresponding to the control signaling.

Step 204: On the MBSFN subframe, transmit control signaling by using a different frequency than the data signal. It can be seen from the foregoing embodiment that the data domain signal and the control domain signal in the MBSFN subframe are transmitted in a frequency division multiplexing manner, and the frequency domain resources occupied by the control domain can be flexibly adjusted according to the size of the transmitted control signaling. Effectively utilizing system bandwidth; and, when different network devices transmit control signaling to respective UEs on the same MBSFN subframe, since different network devices can transmit respective control signaling using different frequencies, these network devices are avoided. The same-frequency interference between the transmitted control signaling ensures that the UE can correctly receive the control signaling; and, since the network device sends the first information indicating the CP type corresponding to the data signal in the MBSFN subframe to the UE, the UE The type of the CP used by the network device to send the control signaling may be determined according to the type of the CP, so that the UE can correctly receive the control signaling. Referring to FIG. 3A and FIG. 3B, FIG. 3 is a schematic structural diagram of an MBSFN subframe to which an embodiment of the present invention is applied. In the embodiment of the present invention, an MBSFN subframe is divided into an MBSFN subframe for transmitting a unicast signal and an MBSFN subframe for transmitting an MBMS signal. . FIG. 3A is a schematic structural diagram of an MBSFN subframe for transmitting a unicast signal, where a CP type corresponding to a data signal in the MBSFN subframe is a normal CP; FIG. 3B shows a structure of an MBSFN subframe for transmitting an MBMS signal. As shown in the figure, the CP type corresponding to the data signal in the MBSFN subframe is an extended CP.

As shown in FIG. 3A and FIG. 3B, in one MBSFN subframe, data signals and control signaling occupy all time domain resources and are multiplexed in the frequency domain by FDM. Wherein, assume 2 physical resource blocks in each subframe (Physical Resource Block, PRB) For transmission control signaling, as shown in the 3rd PRB and the n+1th PRB shown in FIGS. 3A and 3B, the control domain resource carrying the above control signaling is called eCCH. Since the network device can transmit control signaling and data signals through different frequencies on one MBSFN subframe, the frequency domain resources occupied by the control signaling can be flexibly adjusted. For example, when the network device needs to send less control signaling, A smaller number of PRBs are configured to transmit control signaling, and other PRBs in the same MBSFN subframe are used to transmit data signals, thereby improving resource utilization. In addition, when two network devices transmit control signaling to the UE on the same MBSFN subframe, different PRBs in the same MBSFN subframe may be used to transmit respective control signaling, thereby avoiding the same between control signaling. Frequency interference, as shown in FIG. 3C, is a schematic diagram of transmitting control signaling to two UEs to the same UE.

For a data signal transmitted by unicast, since the data signal is usually transmitted by one network device, the multipath characteristic of the wireless channel is not obvious, and a shorter CP is used on the MBSFN subframe corresponding to the data signal, that is, The normal CP shown in FIG. 3A; for the MBMS signal transmitted by multicast or multicast, since the data signal is usually transmitted by a plurality of network devices, the multipath characteristic of the wireless channel is obvious, and the data signal is transmitted correspondingly. A longer CP is used on the MBSFN subframe, that is, the extended CP as shown in FIG. 3B. As shown in FIG. 3A and FIG. 3B, since the symbol length of the extended CP is longer than the symbol length of the normal CP, the subframe using the symbol of the normal CP includes 14 symbols, and the subframe using the symbol of the extended CP includes 12 symbols. Symbols.

It should be noted that, in the MBSFN subframe shown in FIG. 3A and FIG. 3B, the data signal occupies all the time domain resources on one MBSFN subframe. In practical applications, in order to be compatible with the prior art, the data may also be used. The foregoing several symbol resources on the time domain resource occupied by the signal are used for transmission control signaling, which is not limited in this embodiment of the present invention. The foregoing embodiment of the transmission method of the control signaling describes a process of transmitting control signaling to the UE from the network device side, corresponding to the embodiment of the transmission method of the control signaling, and the present invention further provides that the control signal is received from the UE side. An example of the order.

Referring to FIG. 4, it is a flowchart of an embodiment of a method for receiving control signaling according to the present invention:

Step 401: Receive control signaling that is transmitted by the network device on the MBSFN subframe, where the control signaling is the control signaling generated by the CP type after determining, by the network device, the CP type corresponding to the data signal in the MBSFN subframe. The control signaling is transmitted on a different frequency than the data signal.

Corresponding to the foregoing embodiment of the transmission method of the control signaling, when the UE receives the indication sent by the network device

When the first information of the CP type corresponding to the data signal in the MBSFN subframe is, according to the data signal in the MBSFN subframe The CP type corresponding to the number receives the control signaling transmitted by the network device on the MBSFN subframe. The receiving, by the network device, the first information indicating the CP type corresponding to the data signal in the MBSFN subframe may include: receiving, by the network device, the first information that is carried by the air interface signaling, where The air interface signaling includes the physical layer signaling, the MAC layer signaling, or the RRC layer signaling; or, receiving the first information that is sent by the network device and is carried in a bitmap manner; or receiving the sending by the network device A first information containing a set of MBSFN subframes using a first type of CP. Further, the carrying the first information by using the air interface signaling may include: the air interface signaling is broadcast signaling indicating information of an MBSFN subframe reserved for transmitting an MBMS signal, where the broadcast signaling includes a transmission MBMS The number of the MBSFN subframe of the signal, the number of the MBSFN subframe is used as the first information; or the air interface signaling is a signaling packet for transmitting broadcast or multicast channel scheduling information, the signaling packet The number of the MBSFN subframe in which the MBMS signal is transmitted is included, and the number of the MBSFN subframe is used as the first information. Further, the carrying the first information in the bitmap manner may include: identifying, by using a bit value, the type information of each MBSFN subframe in a time period, where the MBSFN subframe that transmits the MBMS signal corresponds to the first bit value, where The other MBSFN subframes other than the MBSFN subframe in which the MBMS signal is transmitted correspond to the second bit value.

When receiving the first information of the CP type corresponding to the data signal in the MBSFN subframe sent by the network device, receiving the control of the network device transmitting on the MBSFN subframe in a blind detection manner according to the candidate CP type Signaling.

Step 402: Decode the control signaling to obtain control information.

Corresponding to the foregoing embodiment of the transmission method of the control signaling, when receiving the first information of the CP type corresponding to the data signal in the MBSFN subframe sent by the network device, according to the data signal in the MBSFN subframe The corresponding CP type decodes the control signaling.

When the first information of the CP type corresponding to the data signal in the MBSFN subframe is not received, the control signaling is decoded in a blind detection manner according to an alternative CP type; further, When the result of the decoding is correct, the UE may determine that the CP type corresponding to the data signal in the MBSFN subframe is the CP type used for the correct decoding.

It can be seen from the foregoing embodiment that the data domain signal and the control domain signal in the MBSFN subframe are transmitted in a frequency division multiplexing manner, and the frequency domain resources occupied by the control domain can be flexibly adjusted according to the size of the transmitted control signaling. Effectively utilizing system bandwidth; and, when different network devices transmit control signaling to respective UEs on the same MBSFN subframe, since different network devices can transmit respective control signaling using different frequencies, these network devices are avoided. Co-channel interference between the transmitted control signaling ensures that these UEs can correctly receive control signaling. Corresponding to the embodiments of the transmission method and the reception method of the control signaling of the present invention, the present invention also provides an embodiment of the network device and the UE.

Referring to FIG. 5, it is a block diagram of an embodiment of a network device according to the present invention:

The network device includes: a determining unit 510, a generating unit 520, and a transmitting unit 530.

The determining unit 510 is configured to determine a CP type corresponding to the data signal in the MBSFN subframe, and the generating unit 520 is configured to generate, according to the CP type determined by the determining unit 510, the control signaling in the MBSFN subframe.

The transmitting unit 530 is configured to transmit the control signaling generated by the generating unit 520 on a different frequency from the data signal on the MBSFN subframe.

The determining unit 510 may be specifically configured to: when the data signal in the MBSFN subframe is a unicast signal transmitted in a unicast manner, determine that the CP type corresponding to the data signal in the MBSFN subframe is normal normal. The CP type corresponding to the data signal in the MBSFN subframe is determined to be an extended extended CP when the data signal in the MBSFN subframe is an MBMS signal transmitted in a broadcast or multicast manner. Referring to FIG. 6, a block diagram of another embodiment of a network device according to the present invention:

The network device includes: a determining unit 610, a transmitting unit 620, a generating unit 630, and a transmitting unit 640. The determining unit 610 is configured to determine a CP type corresponding to the data signal in the MBSFN subframe, and the sending unit 620 is configured to send, to the UE, a CP corresponding to the data signal in the MBSFN subframe determined by the determining unit 610. The first type of information.

The generating unit 630 is configured to generate control signaling in the MBSFN subframe according to the CP type determined by the determining unit 610;

The transmitting unit 640 is configured to transmit the control signaling generated by the generating unit 630 on a different frequency from the data signal on the MBSFN subframe.

The sending unit 620 may include at least one of the following units (not shown in FIG. 6):

a first sending subunit, configured to send the first information that is carried by the air interface signaling to the UE, where the air interface signaling includes physical layer signaling, MAC layer signaling, or RRC layer signaling;

a second sending subunit, configured to send, by the UE, the first information that is carried in a bitmap bitmap manner; and a third sending subunit, configured to send, to the UE, a first part that includes a set of MBSFN subframes that use the first type of CP information.

Specifically, the carrying the first information by using the air interface signaling may include: the air interface signaling refers to The broadcast signaling of the information of the MBSFN subframe that is reserved for the MBMS signal is transmitted, where the broadcast signaling includes the number of the MBSFN subframe in which the MBMS signal is transmitted, and the number of the MBSFN subframe is used as the first information; Or the air interface signaling is a signaling packet for transmitting broadcast or multicast channel scheduling information, where the signaling packet includes a number of an MBSFN subframe for transmitting an MBMS signal, and the number of the MBSFN subframe is used as the First information.

Specifically, the carrying the first information in the bitmap manner may include: identifying, by using a bit value, the type information of each MBSFN subframe in a time period, where the MBSFN subframe that transmits the MBMS signal corresponds to the first bit value, except The other MBSFN subframes outside the MBSFN subframe in which the MBMS signal is transmitted correspond to the second bit value.

The determining unit 610 may be specifically configured to: when the data signal in the MBSFN subframe is a unicast signal transmitted in a unicast manner, determine that the CP type corresponding to the data signal in the MBSFN subframe is normal normal. The CP type corresponding to the data signal in the MBSFN subframe is determined to be an extended extended CP when the data signal in the MBSFN subframe is an MBMS signal transmitted in a broadcast or multicast manner. Referring to FIG. 7, a block diagram of an embodiment of a UE according to the present invention is as follows:

The UE includes: a first receiving unit 710 and a decoding unit 720.

The first receiving unit 710 is configured to receive control signaling that is transmitted by the network device on the MBSFN subframe, where the control signaling is used by the network device to determine a CP type corresponding to the data signal in the MBSFN subframe, The control signaling generated by the CP type, the control signaling is transmitted at a different frequency from the data signal; the decoding unit 720 is configured to decode the control signaling received by the receiving unit 710 to obtain control information. .

The determining the CP type corresponding to the data signal in the MBSFN subframe includes:

When the data signal in the MBSFN subframe is a unicast signal transmitted in a unicast manner, determining that the CP type corresponding to the data signal in the MBSFN subframe is a normal normal CP;

When the data signal in the MBSFN subframe is an MBMS signal transmitted in a broadcast or multicast manner, it is determined that the CP type corresponding to the data signal in the MBSFN subframe is an extended extended CP. Referring to FIG. 8, it is a block diagram of another embodiment of a UE according to the present invention:

The UE includes: a second receiving unit 810, a first receiving unit 820, and a decoding unit 830.

The second receiving unit 810 is configured to receive first information that is sent by the network device and that indicates a CP type corresponding to the data signal in the MBSFN subframe.

a first receiving unit 820, configured to be in the MBSFN subframe received by the second receiving unit 810. a CP type corresponding to the data signal, receiving control signaling that is transmitted by the network device on the MBSFN subframe; the decoding unit 830 is configured to correspond to the data signal in the MBSFN subframe received by the second receiving unit The CP type, the control signaling received by the first receiving unit is decoded.

The second receiving unit 810 may be specifically configured to receive the first information that is sent by the network device and that is carried by the air interface signaling, where the air interface signaling includes physical layer signaling and MAC layer signaling. Or the RRC layer signaling; or, receiving the first information that is sent by the network device and being carried by using a bitmap manner; or receiving, by the network device, the first one that includes the set of MBSFN subframes that use the first type of CP information.

Specifically, the carrying the first information by using the air interface signaling may include: the air interface signaling is broadcast signaling indicating information of an MBSFN subframe reserved for transmitting an MBMS signal, where the broadcast signaling includes a transmission. The number of the MBSFN subframe of the MBMS signal, the number of the MBSFN subframe is used as the first information; or the air interface signaling is a signaling packet for transmitting broadcast or multicast channel scheduling information, the signaling The packet includes the number of the MBSFN subframe in which the MBMS signal is transmitted, and the number of the MBSFN subframe is used as the first information.

Specifically, the carrying the first information in the bitmap manner may include: identifying, by using a bit value, the type information of each MBSFN subframe in a time period, where the MBSFN subframe that transmits the MBMS signal corresponds to the first bit value, except The other MBSFN subframes outside the MBSFN subframe in which the MBMS signal is transmitted correspond to the second bit value. Referring to FIG. 9, a block diagram of another embodiment of a UE according to the present invention is shown:

The UE includes: a first receiving unit 910, a decoding unit 920, and a determining unit 930.

The first receiving unit 910 is configured to receive control signaling that the network device transmits on the MBSFN subframe according to different CP types.

The decoding unit 920 is configured to decode control signaling received by the first receiving unit 910 according to different CP types.

The determining unit 930 is configured to determine, when the decoding unit 920 decodes the result, that the CP type corresponding to the data signal in the MBSFN subframe is the CP type used by the decoding. As can be seen from the foregoing embodiment, the network device determines the CP type corresponding to the data signal in the MBSFN subframe, generates control signaling in the MBSFN subframe according to the CP type, and uses the control signaling to be different from the data signal in the MBSFN subframe. The frequency is transmitted to the UE, so that the UE decodes the control signaling to obtain control information. In the embodiment of the present invention, the data domain signal and the control domain signal in the MBSFN subframe are transmitted in a frequency division multiplexing manner, and the frequency domain resources occupied by the control domain may be flexibly adjusted according to the size of the transmitted control signaling, thereby Effective use system And when different network devices transmit control signaling to the respective UEs on the same MBSFN subframe, since different network devices can transmit respective control signaling by using different frequencies, the transmission of the network devices is avoided. Co-channel interference between control signaling ensures that these UEs can correctly receive control signaling.

It will be apparent to those skilled in the art that the techniques in the embodiments of the present invention can be implemented by means of software plus a necessary general hardware platform. Based on such understanding, the technical solution in the embodiments of the present invention may be embodied in the form of a software product in essence or in the form of a software product, which may be stored in a storage medium such as a ROM/RAM. , a diskette, an optical disk, etc., includes instructions for causing a computer device (which may be a personal computer, server, or network device, etc.) to perform the methods described in various embodiments of the present invention or in some portions of the embodiments.

The various embodiments in the present specification are described in a progressive manner, and the same or similar portions between the various embodiments may be referred to each other, and each embodiment focuses on differences from other embodiments. In particular, for the system embodiment, since it is basically similar to the method embodiment, the description is relatively simple, and the relevant part can be referred to the description of the method embodiment.

The embodiments of the present invention described above are not intended to limit the scope of the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and scope of the invention are intended to be included within the scope of the invention.

Claims

Rights request

A method for transmitting control signaling, the method comprising:

Determining the cyclic prefix corresponding to the data signal in the MBSFN subframe in the multimedia broadcast multicast service single frequency network CP type;

Generating control signaling in the MBSFN subframe according to the CP type;

The control signaling is transmitted over a different frequency than the data signal on the MBSFN subframe.

The method according to claim 1, wherein after determining the CP type of the data signal in the MBSFN subframe, the method further includes:

Transmitting, to the UE, first information indicating a CP type corresponding to the data signal in the MBSFN subframe.

The method according to claim 2, wherein the transmitting, by the UE, the first information indicating a CP type corresponding to the data signal in the MBSFN subframe comprises:

Transmitting, by the UE, the first information that is carried by the air interface signaling, where the air interface signaling includes physical layer signaling, MAC layer signaling, or RRC layer signaling; or

Transmitting, by the UE, the first information carried by the bitmap mapping method; or transmitting, to the UE, first information including a set of MBSFN subframes using the first type of CP.

The method according to claim 3, wherein the carrying the first information by using the air interface signaling comprises:

The air interface signaling is broadcast signaling indicating information of an MBSFN subframe reserved for transmitting an MBMS signal, where the broadcast signaling includes a number of an MBSFN subframe for transmitting an MBMS signal, and a number of the MBSFN subframe. As the first information; or

The air interface signaling is a signaling packet for transmitting broadcast or multicast channel scheduling information, where the signaling packet includes a number of an MBSFN subframe for transmitting an MBMS signal, and the number of the MBSFN subframe is used as the first information.

The method according to claim 3, wherein the carrying the first information by using a bitmap manner includes:

Type information of each MBSFN subframe in a time period is identified by a bit value, where The MBSFN subframe that transmits the MBMS signal corresponds to the first bit value, and the other MBSFN subframes except the MBSFN subframe that transmits the MBMS signal correspond to the second bit value.

The method according to any one of claims 1 to 5, wherein the determining the CP type corresponding to the data signal in the MBSFN subframe includes:

When the data signal in the MBSFN subframe is an MBMS signal transmitted in a broadcast or multicast manner, it is determined that the CP type corresponding to the data signal in the MBSFN subframe is an extended extended CP.

A method for receiving control signaling, the method comprising:

Decoding the control signaling to obtain control information.

The method according to claim 7, wherein the receiving, by the network device, before the control signaling transmitted on the MBSFN subframe, the method further includes: receiving, by the network device, the data indicating the MBSFN subframe The first information of the CP type corresponding to the signal;

The control signaling that is transmitted by the receiving network device on the MBSFN subframe is: receiving, according to the CP type corresponding to the data signal in the MBSFN subframe, a control signaling transmitted by the network device on the MBSFN subframe;

The decoding of the control signaling is specifically: decoding the control signaling according to a CP type corresponding to the data signal in the MBSFN subframe.

The method according to claim 8, wherein the receiving, by the network device, the first information indicating a CP type corresponding to the data signal in the MBSFN subframe comprises:

Receiving, by the network device, the first information that is carried by the air interface signaling, where the air interface signaling includes physical layer signaling, MAC layer signaling, or RRC layer signaling; or

Receiving, by the network device, the first information that is carried by using a bitmap manner; or receiving, by the network device, first information that includes a set of MBSFN subframes that use a first type of CP.

The method according to claim 9, wherein the carrying the first information by using the air interface signaling comprises:

The method according to claim 9, wherein the carrying the first information by using a bitmap manner includes:

Type information of each MBSFN subframe in a time period is identified by a bit value, where an MBSFN subframe transmitting an MBMS signal corresponds to a first bit value, and other MBSFN subframes other than the MBSFN subframe transmitting the MBMS signal Corresponding to the second bit value.

The method according to any one of claims 7 to 11, wherein the determining the CP type corresponding to the data signal in the MBSFN subframe comprises:

13. The method of claim 7 wherein:

The control signaling that is transmitted by the receiving network device on the MBSFN subframe is specifically: receiving, according to different CP types, control signaling that the network device transmits on the MBSFN subframe;

The decoding of the control signaling is specifically: decoding the control signaling according to different CP types;

The method further includes:

When the result of the decoding is correct, it is determined that the CP type corresponding to the data signal in the MBSFN subframe is the CP type used for the decoding.

A network device, the network device comprising: a determining unit, configured to determine a CP type corresponding to the data signal in the MBSFN subframe; and a generating unit, configured to generate, according to the CP type determined by the determining unit, control signaling in the MBSFN subframe;

The network device according to claim 14, wherein the network device further comprises: a sending unit, configured to send, to the UE, a data signal corresponding to the data signal in the MBSFN subframe determined by the determining unit The first information of the CP type.

16. The network device according to claim 15, wherein the transmitting unit comprises at least one of the following units:

a second sending subunit, configured to send, to the UE, the first information that is carried by using a bitmap mapping manner;

And a third sending subunit, configured to send, to the UE, first information that includes a set of MBSFN subframes that use the first type of CP.

The network device according to claim 16, wherein the carrying the first information by air interface signaling comprises:

The network device according to claim 16, wherein the carrying the first information by using a bitmap manner includes:

The type information of each MBSFN subframe in one time period is identified by a bit value, wherein the MBSFN subframe transmitting the MBMS signal corresponds to the first bit value, except for the MBSFN sub of the MBMS signal. The other MBSFN subframes outside the frame correspond to the second bit value.

The network device according to any one of claims 14 to 18, wherein the determining unit is specifically configured to: when the data signal in the MBSFN subframe is a unicast signal transmitted in a unicast manner Determining that the CP type corresponding to the data signal in the MBSFN subframe is a normal normal CP; and determining the data in the MBSFN subframe when the data signal in the MBSFN subframe is an MBMS signal transmitted in a broadcast or multicast manner. The CP type corresponding to the signal is an extended extended CP.

A UE, wherein the UE includes:

And a decoding unit, configured to decode control signaling received by the receiving unit to obtain control information.

The UE according to claim 20, wherein the UE further includes:

a second receiving unit, configured to receive, by the network device, first information indicating a CP type corresponding to the data signal in the MBSFN subframe;

The first receiving unit is configured to receive, according to a CP type corresponding to the data signal in the MBSFN subframe received by the second receiving unit, a control signaling transmitted by the network device on the MBSFN subframe;

The decoding unit is specifically configured to decode the control signaling received by the first receiving unit according to a CP type corresponding to the data signal in the MBSFN subframe received by the second receiving unit.

The UE according to claim 21, wherein the second receiving unit is configured to receive, by the network device, the first information that is carried by the air interface signaling, the air interface letter Or the physical layer signaling, the MAC layer signaling, or the RRC layer signaling; or: receiving the first information that is sent by the network device and being carried by using a bitmap manner; or receiving, by the network device, the first The first information of the set of MBSFN subframes of the type CP.

The UE according to claim 22, wherein the carrying the first information by using the air interface signaling includes: The air interface signaling is broadcast signaling indicating information of an MBSFN subframe reserved for transmitting an MBMS signal, where the broadcast signaling includes a number of an MBSFN subframe for transmitting an MBMS signal, and a number of the MBSFN subframe. As the first information; or

The UE according to claim 22, wherein the carrying the first information by using a bitmap manner includes:

The UE according to any one of claims 20 to 24, wherein the determining the CP type corresponding to the data signal in the MBSFN subframe comprises:

26. The UE of claim 20, wherein:

The first receiving unit is specifically configured to receive, according to different CP types, control signaling that the network device transmits on the MBSFN subframe;

The decoding unit is specifically configured to decode control signaling received by the first receiving unit according to different CP types;

The UE further includes:

And a determining unit, configured to determine, when the decoding unit decodes the result, that the CP type corresponding to the data signal in the MBSFN subframe is the CP type used in the decoding.