CN110972285A

CN110972285A - Communication method and device

Info

Publication number: CN110972285A
Application number: CN201811143059.0A
Authority: CN
Inventors: 刘建琴; 曲秉玉; 薛丽霞; 周永行
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2018-09-28
Filing date: 2018-09-28
Publication date: 2020-04-07

Abstract

The application discloses a communication method and device. The method comprises the following steps: the method comprises the steps that terminal equipment receives first information sent by network equipment on a first time-frequency resource; the first time frequency resource is a time frequency resource except a second time frequency resource mapped by a main synchronous signal, and the first time frequency resource and the second time frequency resource are positioned in the same common signal block; and the terminal equipment receives a second signal according to the first information. A corresponding communication device is also disclosed. By adopting the scheme of the application, the network equipment sends information by using the time-frequency resources other than the time-frequency resources mapped by the main synchronous signal, and the terminal equipment receives the signal according to the received information, so that the accurate transmission of the signal can be ensured under the condition of lower signaling overhead, the utilization rate of the time-frequency resources is improved, and the detection complexity of the terminal equipment is reduced.

Description

Communication method and device

Technical Field

The present application relates to the field of communications technologies, and in particular, to a communication method and apparatus.

Background

In communicating, cell search begins with a synchronization procedure. The procedure utilizes two specifically designed physical signals broadcast by each cell: primary Synchronization Signal (PSS) and Secondary Synchronization Signal (SSS) enable the terminal device and the cell to obtain synchronization in time and frequency, and also provide the terminal device with the physical identification of the cell. In the initial synchronization process after the synchronization signal is detected, the terminal device decodes a Physical Broadcast Channel (PBCH) to obtain key system information, which mainly includes Master Information Blocks (MIB) and System Information Blocks (SIB).

The concept of common signal blocks is defined in New Radio (NR) communication systems. As shown in fig. 1, the common signal block is a schematic structural diagram of a common signal block, and the common signal block is composed of 4 OFDM symbols which are continuous in a time domain, and 20 Physical Resource Blocks (PRBs) per symbol in a frequency domain. It contains PSS, SSS and PBCH. The PBCH frequency domain occupies 48 PRBs of 2,3,4 th OFDM symbol (composed of 20 RBs of 2 nd and 4 th symbols plus 8 PRBs at both ends of SSS), and the PSS and SSS occupy the middle 12 PRBs. Each of the 4 PRBs left at the two ends of the PSS is an idle PRB and is not used for transmitting any other signal, and the power on the idle PRBs can be increased to the PSS to improve the transmission performance of the synchronization signal.

In a new radio-unlicensed (NR-U) communication scenario, the transmission of many signals will be delayed, including the transmission of the common signal block 5 of the initial access phase, due to the effect of possible failures to access the channel by Listen Before Talk (LBT). In order to obtain timing information of a cell, the network device needs to notify some additional information to the terminal device. Reserved bits on the PBCH except for Cyclic Redundancy Check (CRC) are left with only 1-2 bits, and the extra information may be larger than 2 bits, so that there is a difficulty in carrying the newly added extra information in the reserved bits. And other bits of the PBCH except the reserved bits have other purposes, so when the number of the additional information bits is increased, if the additional information is carried by other bits in the PBCH, the implementation of other functions is affected. And enlarging PBCH payload (payload) may cause a change in the common signal block structure, thereby increasing complexity of NR-U common signal block design.

Therefore, there is a need to solve how to inform the terminal device of such additional information with less signaling overhead and less design complexity in NR-U.

Disclosure of Invention

The application provides a communication method and a communication device, aiming at informing information to terminal equipment with smaller signaling overhead and smaller design complexity so as to accurately transmit signals according to the information.

In a first aspect, a communication method is provided, including: the method comprises the steps that terminal equipment receives first information sent by network equipment on a first time-frequency resource; the first time frequency resource is a time frequency resource except a second time frequency resource mapped by a main synchronous signal, and the first time frequency resource and the second time frequency resource are positioned in the same common signal block; and the terminal equipment receives a second signal according to the first information.

In the aspect, the network device sends information by using the time-frequency resources other than the time-frequency resources mapped by the primary synchronization signal, and the terminal device receives the signal according to the received information, so that accurate transmission of the signal can be ensured with relatively low signaling overhead, the utilization rate of the time-frequency resources is improved, and the detection complexity of the terminal device is reduced.

In a second aspect, a communication method is provided, including: the network equipment sends first information to the terminal equipment on a first time-frequency resource; the first time frequency resource is a time frequency resource except a second time frequency resource mapped by a main synchronous signal, and the first time frequency resource and the second time frequency resource are positioned in the same common signal block; and the network equipment sends a second signal to the terminal equipment according to the first information.

In the aspect, the network device sends information by using idle time-frequency resources other than the time-frequency resources mapped by the main synchronization signal, and the terminal device receives the signal according to the received information, so that accurate transmission of the signal can be ensured under a smaller signaling overhead, the utilization rate of the time-frequency resources is improved, and the detection complexity of the terminal device is reduced.

With reference to the first aspect or the second aspect, in a possible implementation manner, the first time-frequency resource and the second time-frequency resource are located in a same time unit and occupy different frequency domain resources, and the first time-frequency resource and the second time-frequency resource are continuous in a frequency domain.

In this implementation, the first time-frequency resource is a frequency-domain resource in the common signal block that is immediately adjacent to and located in the same time unit as the second time-frequency resource.

With reference to the first aspect or the second aspect or any one of the possible implementations of the first aspect and the second aspect, in another possible implementation, the number of physical resource blocks occupied by the first time-frequency resource is equal to a difference between the number of physical resource blocks occupied by a physical broadcast channel in a single time unit and the number of physical resource blocks occupied by a primary synchronization signal in a single time unit.

In the implementation mode, the physical resource blocks occupied by the first time-frequency resource are the physical resource blocks with the two idle ends of the main synchronization signal, and the idle time-frequency resource is used for transmitting the newly added information bits in the new scene, so that the utilization rate of the time-frequency resource is improved.

With reference to the first aspect or the second aspect or any possible implementation manner of the first aspect or the second aspect, in a further possible implementation manner, the number of physical resource blocks occupied by the first time-frequency resource is equal to a difference between the number of physical resource blocks occupied by the common signal block in a single time unit and the number of physical resource blocks occupied by the primary synchronization signal in the single time unit.

In the implementation mode, the physical resource blocks occupied by the first time-frequency resource are physical resource blocks with two idle ends of the main synchronization signal in the common signal block, and the idle time-frequency resource is used for transmitting the newly added information bits in a new scene, so that the utilization rate of the time-frequency resource is improved.

With reference to the first aspect or the second aspect or any possible implementation manner of the first aspect or the second aspect, in a further possible implementation manner, the first time-frequency resources further include third time-frequency resources that are located in a same time unit as the common signal block and occupy different frequency-domain resources, and the third time-frequency resources are consecutive to the common signal block in a frequency domain.

In this implementation manner, the first time-frequency resource further includes a time-frequency resource extended beyond the common signal block, which may increase the number of bits included in the first information, and the first time-frequency resource includes a physical resource block where two ends of the primary synchronization signal are idle and a time-frequency resource extended beyond the common signal block, so that effective transmission of more new information bits may be implemented, and detection complexity of the terminal device in detecting the first information is not increased.

In a third aspect, a communication method is provided, including: the method comprises the steps that terminal equipment receives first information sent by network equipment on a first time-frequency resource; the first time-frequency resource comprises a third time-frequency resource which is located in the same time unit with the common signal block and occupies different frequency domain resources, and the third time-frequency resource is continuous with the common signal block on the frequency domain; and the terminal equipment receives a second signal according to the first information.

In the aspect, the network device sends information by using the time-frequency resource extended beyond the common signal block, and the terminal device receives the signal according to the received information, so that accurate transmission of the signal can be ensured under a smaller signaling overhead, the utilization rate of the time-frequency resource is improved, and the detection complexity of the terminal device is reduced.

In a fourth aspect, a communication method is provided, including: the network equipment sends first information to the terminal equipment on a first time-frequency resource; the first time-frequency resource comprises a third time-frequency resource which is located in the same time unit with the common signal block and occupies different frequency domain resources, and the third time-frequency resource is continuous with the common signal block on the frequency domain; and the network equipment sends a second signal to the terminal equipment according to the first information.

With reference to any one of the first aspect to the fourth aspect or any possible implementation manner of the first aspect to the fourth aspect, in one possible implementation manner, the first information includes one or more of the following: offset indication information of the common signal block; identification information of the primary common signal block; repetition pattern information of the common signal block, indication information of a constituent signal of a sounding reference signal.

In this implementation, by sending the above information to the terminal device, it is convenient for the terminal device to acquire the timing of the cell.

With reference to any one of the first aspect to the fourth aspect or any one of possible implementations of the first aspect to the fourth aspect, in yet another possible implementation, the offset indication information of the common signal block includes a cycle number of the common signal block or an index of a first common signal block transmitted when the network device accesses a channel through listen before talk, LBT.

In this implementation, the network device notifies the terminal device of the successful time point of LBT, so that the terminal device can accurately receive the common signal block.

With reference to any one of the first aspect to the fourth aspect or any one of possible implementation manners of the first aspect to the fourth aspect, in yet another possible implementation manner, the primary common signal block is one common signal block used for determining a control channel resource location of minimum remaining system information.

In this implementation, the network device indicates a main common signal block to the terminal device, which may be used to determine a control channel resource location for determining the minimum remaining system information, so that the terminal device can accurately receive the minimum remaining system information.

With reference to any one of the first aspect to the fourth aspect or any one of the possible implementations of the first aspect to the fourth aspect, in yet another possible implementation, the repetition pattern information of the common signal block includes one or more of the following information: the number of repetitions of the common signal block, and the interval between two adjacent common signal blocks.

In this implementation, the network device notifies the terminal device of the repetitive pattern information of the common signal block, which facilitates the terminal device to accurately receive the common signal block.

With reference to any one of the first aspect to the fourth aspect or any one of the possible implementation manners of the first aspect to the fourth aspect, in yet another possible implementation manner, the first information is carried in a physical broadcast channel or a first signal, and the first signal carries the first information through a linear cyclic code sequence.

In this implementation, the decoding performance of the first signal can be optimized by using a linear cyclic code sequence to carry the first information.

With reference to any one of the first to fourth aspects or any one of the possible implementation manners of the first to fourth aspects, in yet another possible implementation manner, the density of the demodulation reference signal of the first signal is 1/3, 1/4, or 1/6.

With reference to any one of the first aspect to the fourth aspect or any one of the possible implementation manners of the first aspect to the fourth aspect, in yet another possible implementation manner, the linear cyclic code sequence is a code sequence that satisfies a maximum code distance between any two of the linear cyclic code sequences.

In a fifth aspect, a communication apparatus is provided, which may implement the communication method in the first aspect or the third aspect. For example, the communication device may be a chip (such as a baseband chip, or a communication chip, etc.) or a terminal device. The above-described method may be implemented by software, hardware, or by executing corresponding software by hardware.

In one possible implementation, the communication device has a structure including a processor, a memory; the processor is configured to support the apparatus to perform corresponding functions in the above-described communication method. The memory is used for coupling with the processor, which holds the necessary programs (instructions) and/or data for the device. Optionally, the communication apparatus may further include a communication interface for supporting communication between the apparatus and other network elements.

In another possible implementation manner, the communication device may include a unit or a module that performs corresponding actions in the above method.

In yet another possible implementation, the wireless communication device includes a processor and a transceiver, the processor is coupled to the transceiver, and the processor is configured to execute a computer program or instructions to control the transceiver to receive and transmit information; the processor is further configured to implement the above-described method when the processor executes the computer program or instructions. The transceiver may be a transceiver, a transceiver circuit, or an input/output interface. When the communication device is a chip, the transceiver is a transceiver or an input/output interface.

In yet another possible implementation, the communication device has a structure including a processor; the processor is configured to support the apparatus to perform corresponding functions in the above-described communication method.

When the communication device is a chip, the transceiver unit may be an input/output unit, such as an input/output circuit or a communication interface. When the communication device is a terminal equipment, the transceiving unit may be a transmitter and a receiver, or a transmitter and a receiver.

A sixth aspect provides a communication apparatus that can implement the communication method in the second or fourth aspect. For example, the communication device may be a chip (such as a baseband chip, or a communication chip, etc.) or a network device, and the above method may be implemented by software, hardware, or by executing corresponding software by hardware.

In one possible implementation, the communication device has a structure including a processor, a memory; the processor is configured to support the apparatus to perform corresponding functions in the above-described communication method. The memory is used for coupling with the processor and holds the programs (instructions) and data necessary for the device. Optionally, the communication apparatus may further include a communication interface for supporting communication between the apparatus and other network elements.

In another possible implementation manner, the communication device may include a unit module for performing corresponding actions in the above method.

When the communication device is a chip, the transceiver unit may be an input/output unit, such as an input/output circuit or a communication interface. When the communication device is a network device, the transceiving unit may be a transmitter and a receiver, or a transmitter and a receiver.

In a seventh aspect, a computer-readable storage medium is provided, having stored therein instructions, which, when run on a computer, cause the computer to perform the method of the above aspects.

In an eighth aspect, there is provided a computer program product containing instructions which, when run on a computer, cause the computer to perform the method of the above aspects.

Drawings

FIG. 1 is a schematic diagram of a common signal block;

fig. 2 is a schematic diagram of a communication system to which the present application relates;

fig. 3 is an interaction flow diagram of a communication method according to an embodiment of the present application;

FIG. 4a is a diagram illustrating transmission of first information from first time/frequency resources other than the time/frequency resources of the multiplexed PSS;

FIG. 4b is a diagram illustrating transmission of first information using a third time-frequency resource extended beyond a common signal block;

FIG. 5 is a schematic diagram of a cyclic transmission common signal block;

FIG. 6 is a schematic diagram of a repeating pattern of common signal blocks;

fig. 7 is a schematic structural diagram of a communication device according to an embodiment of the present application;

fig. 8 is a schematic structural diagram of another communication device according to an embodiment of the present application;

fig. 9 is a schematic structural diagram of another communication device according to an embodiment of the present application;

fig. 10 is a schematic structural diagram of another communication device according to an embodiment of the present application.

Detailed Description

The embodiments of the present invention will be described below with reference to the drawings.

Referring to fig. 2, fig. 2 is a schematic diagram of a communication system according to the present application. The communication system may include one or more network devices 100 (only 1 shown) and one or more terminal devices 200 connected to the network devices 100.

The network device 100 may be a device capable of communicating with the terminal device 200. The network device 100 may be any device having a wireless transceiving function. Including but not limited to: a base station NodeB, an evolved node b, a base station in a fifth generation (5G) communication system, a base station or network device in a future communication system, an access node in a WiFi system, a wireless relay node, a wireless backhaul node, and the like. The network device 100 may also be a wireless controller in a Cloud Radio Access Network (CRAN) scenario. The network device 100 may also be a small station, a Transmission Reference Point (TRP), or the like. The embodiments of the present application do not limit the specific technologies and the specific device forms used by the network devices.

The terminal device 200 is a device having a wireless transmission/reception function, and may also be referred to as a "terminal". Can be deployed on land, including indoors or outdoors, hand-held, worn, or vehicle-mounted; can also be deployed on the water surface, such as a ship and the like; and may also be deployed in the air, such as airplanes, balloons, satellites, and the like. The terminal device may be a mobile phone (mobile phone), a tablet computer (pad), a computer with a wireless transceiving function, a Virtual Reality (VR) terminal device, an Augmented Reality (AR) terminal device, a wireless terminal in industrial control (industrial control), a wireless terminal in self driving (self driving), a wireless terminal in remote medical (remote medical), a wireless terminal in smart grid (smart grid), a wireless terminal in transportation safety (transportation safety), a wireless terminal in smart city (smart city), a wireless terminal in home (smart home), and the like. The embodiments of the present application do not limit the application scenarios. A terminal device may also sometimes be referred to as a User Equipment (UE), an access terminal device, a UE unit, a mobile station, a remote terminal device, a mobile device, a terminal (terminal), a wireless communication device, a UE agent, a UE device, or the like.

It should be noted that the terms "system" and "network" in the embodiments of the present application may be used interchangeably. The "plurality" means two or more, and in view of this, the "plurality" may also be understood as "at least two" in the embodiments of the present application. "and/or" describes the association relationship of the associated objects, meaning that there may be three relationships, e.g., a and/or B, which may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" generally indicates that the preceding and following related objects are in an "or" relationship, unless otherwise specified. The descriptions of "first" and "second" appearing in the embodiments of the present application are only for illustrating and distinguishing the objects of description, and do not indicate any particular limitation to the number of devices in the embodiments of the present application, and do not constitute any limitation to the embodiments of the present application.

Referring to fig. 3, fig. 3 is a schematic interaction flow diagram of a communication method according to an embodiment of the present disclosure. Wherein:

s101, the network equipment sends first information to the terminal equipment on the first time-frequency resource.

S102, the terminal device receives first information sent by the network device on a first time-frequency resource.

In one implementation, the first time-frequency resource is a time-frequency resource other than a second time-frequency resource mapped by a primary synchronization signal, and the first time-frequency resource and the second time-frequency resource are located in the same common signal block.

In the present application, the common signal block includes PSS, SSS, and PBCH. The common signal block may also be referred to as a synchronization signal/physical broadcast channel block (SS/PBCH block). The current SS/PBCH block structure consists of 4 OFDM symbols that are consecutive in the time domain, and 20 PRBs per symbol in the frequency domain. In each SS/PBCH block, the broadcast channel occupies the 2 nd PRB in the 4 th OFDM symbol, 20 PRBs in the 4 th symbol, and a part of the PRB in the 3 rd symbol except for the PRB to which the SSs maps. In the OFDM symbol where the PSS is located, the PSS and its guard band occupy the middle 12 PRBs (hereinafter referred to as "second time-frequency resource" for convenience of description), and the remaining 4 PRBs on both sides are idle PRBs, which are not used to transmit any other signals in the prior art. Considering that NR-U scenarios are mainly small cell scenarios, coverage is not limited for transmission of uplink and downlink signals. Therefore, as shown in fig. 4a, each of the 4 PRBs (hereinafter referred to as "first time-frequency resource" for convenience of description) left out at the upper and lower sides of the OFDM symbol where the PSS is located can be used to transmit a signal (hereinafter referred to as "first signal" for convenience of description) carrying some newly added extra information in the NR-U scenario. It can be understood that the number of PRBs left out on the upper and lower sides of the OFDM symbol where the PSS is located may not be limited to 4 each, and may be less than 4; when the structure of the common signal block is other structures, the number of the PRBs left out on the upper and lower sides outside the RB occupied by the PSS and its guard band in the OFDM symbol where the PSS is located may also be greater than 4. Here, the added additional information is referred to as first information, and the first information can be carried on the first signal for transmission.

Specifically, the first time-frequency resource is a time-frequency resource other than a second time-frequency resource mapped by the primary synchronization signal, and the first time-frequency resource and the second time-frequency resource are located in the same common signal block, which can be understood as that the first time-frequency resource is a time-frequency resource other than the second time-frequency resource mapped by the primary synchronization signal in the same common signal block. In some embodiments, the first time-frequency resource and the second time-frequency resource are located in the same time unit and occupy different frequency domain resources, and the first time-frequency resource and the second time-frequency resource are consecutive in frequency domain. The time unit may be an Orthogonal Frequency Division Multiplexing (OFDM) symbol, a mini-slot, a slot (slot), a subframe, etc., and is not limited herein. When the time unit is an OFDM symbol, the same time unit is the OFDM symbol where the primary synchronization signal is located.

In some embodiments, the number of physical resource blocks occupied by the first time-frequency resource is equal to a difference between the number of physical resource blocks occupied by the physical broadcast channel in a single time unit and the number of physical resource blocks occupied by the primary synchronization signal in a single time unit. Or, in other embodiments, the number of physical resource blocks occupied by the first time-frequency resource is equal to a difference between the number of physical resource blocks occupied by the common signal block in a single time unit and the number of physical resource blocks occupied by the primary synchronization signal in a single time unit. As shown in fig. 4a, the number of PRBs occupied by the physical broadcast channel in a single time unit is 20, the number of PRBs occupied by the PSS in a single time unit is 12, and the number of PRBs occupied by the first time-frequency resource is 20-12-8. Of course, the structure of the common signal block may not be limited to the structure shown in fig. 4 a.

In another implementation, the first time-frequency resource includes a third time-frequency resource located in the same time unit as the common signal block and occupying a different frequency domain resource, and the third time-frequency resource is contiguous with the common signal block in a frequency domain.

Alternatively, as shown in fig. 4b, 1 or 2 PRBs may be added to both sides of the 20 PRBs of each OFDM symbol in the common signal block (hereinafter referred to as "third time-frequency resource" for convenience of description), and since the common signal block occupies 4 consecutive OFDM symbols in the time domain, it is equivalent to adding 8 or 16 PRBs to both sides of the common signal block, and the transmission of the added first information may be completed by using the added 8 or 16 PRBs.

S103, the network equipment sends a second signal to the terminal equipment according to the first information.

And S104, the terminal equipment receives a second signal according to the first information.

The first information is some additional information required in the NR-U scenario, which can be used to receive and demodulate common signal blocks or other signals or to obtain timing information of the cell. Therefore, after the network device sends the first information to the terminal device, the network device can send a second signal to the terminal device according to the first information. The second signal may be a common signal block, or may be other signals besides the common signal block, such as system information, a control channel of the system information, a paging message, a control channel of the paging message, a random access response, a control channel of the random access response, and the like, which is not limited herein. The terminal device may receive the second signal based on the first information.

In this embodiment, the time frequency resources other than the second time frequency resource mapped by the PSS in the common signal block and/or the newly added time frequency resources outside the common signal block may be used as the time frequency resources for transmitting the first signal and may also be used as the newly added time frequency resources for transmitting the PBCH.

Wherein the first information comprises one or more of:

offset indication information of the common signal block;

identification information of the primary common signal block;

repetition pattern information of the common signal block.

It is understood that any additional information other than the first information, such as indication information of the constituent signals of the sounding reference signal, is within the scope of the present application, and the present application is not limited in this respect. The first information and any other additional information may be transmitted through the first signal, and may also be carried through PBCH, for example, the information is carried in a payload of PBCH, which is not limited herein.

1) Offset indication information on common signal block: for indicating the position offset information of the common signal block relative to the frame header.

The transmission of the signal in the NR-U relies on LBT detection, i.e., LBT needs to be performed before the signal transmission, and only if LBT is successful, the network device and/or the terminal device can transmit data on the unlicensed spectrum. The same is true for the transmission of the common signal block, and the network device needs to listen before transmitting the common signal block, and can transmit the common signal block only when the current spectrum resource is listened to and available. That is, the transmission of the common signal block in the NR-U depends on the actual outcome of the LBT of the network device, e.g., the point in time at which the LBT succeeds.

The primary synchronization signal, the secondary synchronization signal and the physical broadcast channel in the common signal block may be used to determine timing information between the network device and the terminal device, including frame timing, subframe timing, OFDM symbol timing, and the like. The above timing is mainly accomplished by the mapping of the candidate common signal blocks fixed in the first half frame or the second half frame of a frame and the offset indication information of the common signal blocks relative to the frame header. Alternatively, the offset indication information may be index information of the common signal block, and according to the index information of the common signal block, the terminal device may determine a position of the common signal block relative to the frame header, so as to determine timing information between the network device and the terminal device.

Due to the randomness of the LBT result, different network devices have randomness at the time when a common signal block is actually transmitted in one frame, and a fixed single round of mapping of the common signal block in the system frame may cause some candidate common signal blocks to fail to be actually transmitted due to LBT failure, in order to traverse all candidate common signal blocks, the network device may perform cyclic mapping on the candidate common signal blocks in the NR-U scenario to reduce the problem of common signal block transmission blocking caused by LBT failure, as shown in fig. 5. The positions of the common signal blocks with the same index relative to the frame header will also be different after the circular mapping. In fig. 5, the position offset of the initial common signal block 1 with respect to the frame header is 1, and the initial common signal block 1 is circularly mapped after the common signal block 8 due to LBT failure, so that the position offset of the circularly mapped common signal block 1 with respect to the frame header is 8+ 1-9. The network device needs to indicate the position of the common signal block relative to the frame header to the terminal device, for example, the network device may indicate the common signal block as the information of the common signal block after the cyclic mapping for the second time to the terminal device.

Optionally, the offset indication information of the common signal block further includes a number of cycles of the common signal block in one frame or an index of a first common signal block transmitted when the network device accesses a channel through LBT.

Specifically, in one implementation, the network device indicates the number of cycles of the common signal block to the terminal device. I.e. the current common signal block is the common signal block in the transmission of the several rounds. For example, if the network device indicates that the transmission corresponding to the current common signal block is the first transmission or the second transmission, 1-bit information needs to be added. The cycle number can be indicated in two ways: indicating the number of cycles itself; the number of times of the loop map is numbered indicating the number of times of the loop. For example, if the number of cycles is 2, 1 bit is required, a "0" indicates a first round of transmission, and a "1" indicates a second round of transmission. For another example, if the number of the first round transmission is 0 and the number of the second round transmission is 1, "0" indicates the first round transmission and "1" indicates the second round transmission. It should be understood that the number of cycles of the common signal block may also be greater than 2, and the number of required indicating bits may also be different according to the number of cycles, for example, when the number of cycles is 3 or 4, the number of required indicating bits is 2, and is not limited specifically here. According to the above description, the network device indicates the number of cycles of the common signal block and the position offset information of the common signal block with respect to the frame header in the first round to the terminal device. After receiving the position offset information of the common signal block relative to the frame header in the first round and the cycle number of the common signal block, the terminal device can determine at which position of which round the common signal block is received, and further can obtain the timing information between the network device and the terminal device.

In another implementation, the network device may also indicate an index of the first candidate common signal block transmitted when accessing the channel through the LBT. The terminal equipment obtains the position of the detected candidate common signal block relative to the frame head according to the information. As shown in fig. 5, if the first common signal block transmitted by the gNB3 when accessing the channel through LBT is the common signal block 6, the index of the common signal block 6 is indicated to the terminal device. The terminal equipment can obtain the position information of each common signal block relative to the frame header according to the indicated common signal block index information. For example, using fig. 5 as an example, the positions of the common signal block 6, the common signal block 7, and the common signal block 8 with respect to the frame header are respectively 6, 7, and 8, and the positions of the common signal block 1, the common signal block 2, the common signal block 3, the common signal block 4, and the common signal block 5 with respect to the frame header are respectively 9(8+ (1mod6)), 10(8+ (2mod 6)), 11(8+ (3mod 6)), 12(8+ (4mod 6)), and 13(8+ (5mod 6)). The terminal device may receive the common signal block 6, the common signal block 7, the common signal block 8, the common signal block 1, the common signal block 2, the common signal block 3, the common signal block 4, and the common signal block 5 at these positions, respectively, and obtain timing information between the network device and the terminal device based on the position of the common signal block relative to the frame header.

It can be understood that there are at most 64 kinds of index indications of the common signal blocks, i.e., offset indication information of the common signal blocks, according to a carrier frequency (carrier frequency) range of the spectrum resource corresponding to the NR-U transmission. When the carrier frequency range is below 2.4GHz, index indication of the common signal block, namely, the value of the offset indication information of the common signal block is at most 4; when the carrier frequency range is 2.4GHz to 6GHz, the index indication of the common signal block, namely the value of the offset indication information of the common signal block, is at most 8; when the carrier frequency range is above 6GHz, the index indication of the common signal block, that is, the value of the offset indication information of the common signal block, is at most 64. Therefore, when the offset indication information of the common signal block is the index of the first common signal block sent by the network device when accessing the channel through the LBT, according to the difference of the carrier frequency ranges, 2-bit (sub 3GHz), 3-bit (3-6 GHz), or 6-bit (>6GHz) information needs to be indicated.

2) Identification information on the master common signal block (master SS-PBCH block): the primary common signal block is a common signal block used for determining a time-frequency resource location of the second signal, and optionally, the second signal may be any one or more of a control channel of minimum remaining system information, other system information, a control channel of other system information, a paging message, and a control channel of a paging message. Alternatively, the primary common signal block may also be a reference common signal block used for determining the position of other common signal blocks in a plurality of common signal blocks repeatedly transmitted on different frequency domain resources in the same time unit. Here, the role and definition of the main common signal block are not particularly limited.

Specifically, in NR-U, in order to meet the regulatory requirement, under the scenario that the subcarrier spacing is small, the current common signal block structure (20 PRBs) cannot meet the requirement of the required 80% channel bandwidth occupancy. To meet the requirement, the network device may transmit multiple repeated common signal blocks on different frequency domain resources of the same time unit to achieve the requirement of 80% channel occupancy.

In the prior art, the location of the control channel resource set (CORESET) of the minimum remaining system information (RMSI) is determined based on the associated common signal block, and the network device indicates the relative time-frequency resource location information of the RMSI CORESET to the associated common signal block to the terminal device.

When multiple common signal blocks are repeatedly transmitted on different frequency domain resources of the same time unit, the network device needs to indicate a main common signal block to the terminal device for determining the relative time-frequency resource position of the control channel resource of the minimum remaining system information relative to the main common signal block.

3) Information on the repetition pattern of the common signal block: information indicating a repeating pattern of a plurality of common signal blocks within the same time unit on different frequency domain resources in a system bandwidth.

A schematic diagram of a repeating pattern of common signal blocks as shown in fig. 6. Fig. 6 illustrates 3 repetitive patterns (pattern1, pattern2, and pattern 3). Wherein the repetition pattern information of the common signal block includes one or more of the following information: the number of repetitions of a common signal block, the spacing between two adjacent common signal blocks. Alternatively, the interval of two adjacent common signal blocks refers to a frequency domain interval of two adjacent common signal blocks. Specifically, there are multiple repeated common signal blocks on different frequency domain resources of the same time unit. The number of repetitions of the common signal block in each repetition pattern may be the same or different. As shown in fig. 6, the number of repetitions of the common signal block in the repetitive pattern1 is 4, the number of repetitions of the common signal block in the repetitive pattern2 is 3, and the number of repetitions of the common signal block in the repetitive pattern3 is 2. Or again, it can be understood that the frequency domain intervals of two adjacent common signal blocks of the repetitive pattern1, the repetitive pattern2 and the repetitive pattern3 are different.

The network equipment and the terminal equipment store the repeated pattern of the public signal block in advance, the network equipment sends the repeated pattern information adopted by the public signal block to the terminal equipment, and the terminal equipment can know which repeated pattern is adopted by the network equipment to send the public signal block according to the repeated pattern information. Alternatively, the repetition pattern information may be represented in a number or an index, i.e., the repetition pattern information may indicate the number or the index of the repetition pattern. Optionally, the repetition pattern information of the common signal block includes 2 to 3 bits. For example, 2 bits are used to indicate the number of repetitions of the common signal block, "00" indicates 1 repetition, "01" indicates 2 repetitions, "10" indicates 3 repetitions, and "11" indicates 4 repetitions. The network device sends "01" to the terminal device, and after the terminal device receives "01", the terminal device can know that the network device adopts the repetitive pattern3, so that the common signal block is received according to the repetitive pattern 3.

It will be appreciated that the frequency domain spacing of two adjacent common signal blocks may vary depending on whether there are additional signals transmitted in the current symbol. Therefore, the repetition pattern of the common signal block transmitted on different frequency domain resources within the same time unit by the common signal block at the same repetition number may still have multiple candidate values due to the difference of the frequency domain intervals.

In addition, when the first signal carries the first information, optionally, the bit number of the first information may be 1 to 7 bits, and to achieve better decoding performance of the first signal, an optional design may be: the first information is carried by a linear cyclic code sequence. That is, the first signal is constructed as a signal obtained by a linear cyclic code sequence. Further, there are different methods of constructing the linear cyclic code sequence according to the size of the first information bit number. Alternatively, the first information may be carried by another code sequence besides the linear cyclic code, such as a non-linear block code sequence, or any other sequence, such as an m-sequence, a Zadoff-chu (zc) sequence, a Gold sequence, etc., which is not limited herein.

A cyclic code (cyclic code) is a linear block code, and a cyclic shift of each codeword results in another codeword that also belongs to the code. They are error correcting codes that possess convenient error detection and correction.

Let C be a linear code of packet length n over the finite field gf (q). If C is equal for each codeword in C (C)₁,...,c_n) Word (c) in GF (q) n obtained by cyclic shift_n,c₁,...,c_n-1) Still one codeword, then C is called a cyclic code. Since a cyclic shift to the right by one bit is equivalent to a cyclic shift to the left by n-1 bits, cyclic codes can also be defined by a cyclic left shift. So linear code C is an exact cyclic code if any cyclic shift is constant.

Cyclic codes have some additional structural constraints on the code. They are all based on galois fields and, due to their structural nature, are useful for error control.

Take the first information as 3 bits, and the number of PRBs 8 that can be used to transmit the first signal as an example. First, in order to guarantee the channel estimation performance of the first signal, 1/3, 1/4 or 1/6 density known reference signals with uniform intervals need to be reserved in the time-frequency resources of 8 PRBs as demodulation reference signals of the first signal. That is, 32, 24, and 16 resource elements need to be reserved in the 8 PRBs for transmitting the demodulation reference signal of the first signal.

The linear cyclic code sequence is a code sequence satisfying the maximum code distance between any two of the linear cyclic code sequences. Taking the density of the demodulation reference signal of the first signal as 1/4 or 1/6 as an example, there are 72 or 80 Resource Elements (REs) remaining in the time-frequency resources of 8 PRBs for transmitting the first signal.

Based on the above information, optionally, the construction options of the optimal linear cyclic code sequence are respectively: (72,3,40) and (80,3, 45).

The method of constructing the code sequence corresponding to (72,3,40) is as follows. Here, 72 is a sequence length of a code sequence, 3 is a bit number of the first information carried by the linear cyclic code sequence, and 40 is a minimum code distance between any two code sequences of the above structure:

constructing a linear cyclic code sequence (72,3,40) over GF (2):

(1): (8,1,8), a code length of the linear cyclic code on GF (2) is 8, a minimum code distance is 8, and the number of bits carrying information is 1;

(2): (16,5,8), linear cyclic code on GF (2), code length is 16, minimum code distance is 8, bit number of carried information is 5, and the construction method is: plotkin for the linear cyclic code for line (20) and the linear cyclic code for line (1);

(3): (14,3,8), linear cyclic code on GF (2), code length 14, minimum code distance 8, number of bits of information carried 3, construction method: truncating the linear cyclic code of row (2) at position (15 … 16);

(4): (20,3,11), linear cyclic code on GF (2), code length 20, minimum code distance 11, number of bits of information carried 3, construction method: a concatenation of the linear cyclic code of line (22) and the linear cyclic code of line (3);

(5): (21,3,12), linear cyclic code over GF (2), code length 21, minimum code distance 12, number of bits carrying information 3, construction method: expanding the linear cyclic code of the line (4), and adding 1 to the minimum code distance;

(6): (27,3,15), linear cyclic code over GF (2), code length 27, minimum code distance 15, number of bits carrying information 3, construction method: a concatenation of the linear cyclic code of line (22) and the linear cyclic code of line (5);

(7): (28,3,16), linear cyclic code on GF (2), code length is 28, minimum code distance is 16, bit number of carried information is 3, and the construction method is as follows: expanding the linear cyclic code of the line (6), and adding 1 to the minimum code distance;

(8): (34,3,19), the code length of the linear cyclic code on GF (2) is 34, the minimum code distance is 19, the number of bits of the carried information is 3, and the construction method comprises the following steps: a concatenation of the linear cyclic code of line (22) and the linear cyclic code of line (7);

(9): (35,3,20), linear cyclic code on GF (2), code length 35, minimum code distance 20, number of bits of information carried 3, construction method: expanding the linear cyclic code of the line (8), and adding 1 to the minimum code distance;

(10): (41,3,23), linear cyclic code over GF (2), code length 41, minimum code distance 23, number of bits carrying information 3, construction method: a concatenation of the linear cyclic code of line (22) and the linear cyclic code of line (9);

(11): (42,3,24), linear cyclic code over GF (2), code length 42, minimum code distance 24, number of bits carrying information 3, construction method: expanding the linear cyclic code of the line (10), adding 1 to the minimum code distance;

(12): (48,3,27), linear cyclic code on GF (2), code length 48, minimum code distance 27, number of bits of information carried 3, construction method: a concatenation of the linear cyclic code of line (22) and the linear cyclic code of line (11);

(13): (49,3,28), linear cyclic code on GF (2), code length is 49, minimum code distance is 28, bit number of carried information is 3, construction method is: expanding the linear cyclic code of the line (12), the minimum code distance plus 1;

(14): (55,3,31), linear cyclic code on GF (2), the code length is 55, the minimum code distance is 31, the number of bits of carried information is 3, and the construction method is as follows: a concatenation of the linear cyclic code of line (22) and the linear cyclic code of line (13);

(15): (56,3,32), linear cyclic code on GF (2), code length is 56, minimum code distance is 32, bit number of carried information is 3, construction method is: -extending the linear cyclic code of the line (14) with the minimum code distance plus 1;

(16): (62,3,35), linear cyclic code on GF (2), code length 62, minimum code distance 35, number of bits of information carried 3, construction method: a concatenation of the linear cyclic code of line (22) and the linear cyclic code of line (15);

(17): (63,3,36), linear cyclic code over GF (2), code length 63, minimum code distance 36, number of bits carrying information 3, construction method: -extending the linear cyclic code of the line (16) with the minimum code distance plus 1;

(18): (4,1,4), a code length of a linear cyclic code on GF (2) is 4, a minimum code distance is 4, and the number of bits carrying information is 1;

(19): (4,3,2), a code length of the linear cyclic code on GF (2) is 4, a minimum code distance is 2, and the number of bits carrying information is 3;

(20): (8,4, 4'), linear cyclic code on GF (2), code length is 8, minimum code distance is 4, bit number of carried information is 4, and the construction method is as follows: the plotkin sum of the linear cyclic code of line (19) and the linear cyclic code of line (18);

(21): (7,4,3), linear cyclic code over GF (2), code length 7, minimum code distance 3, number of bits carrying information 4, construction method: a linear cyclic code puncturing rows (20) at position 1;

(22): (6,3,3), linear cyclic code on GF (2), code length is 6, minimum code distance is 3, number of bits carrying information is 3, construction method is: a linear cyclic code that truncates the line (21) at position 1;

(23): (69,3,39), the code length of the linear cyclic code on GF (2) is 69, the minimum code distance is 39, the number of bits of the carried information is 3, and the construction method is as follows: a concatenation of the linear cyclic code of line (22) and the linear cyclic code of line (17);

(24): (70,3,40), linear cyclic code on GF (2), code length is 70, minimum code distance is 40, bit number of carried information is 3, construction method is: expanding the linear cyclic code of the line (23), adding 1 to the minimum code distance;

(25): (3,3,1), linear cyclic code on GF (2), 3-length full-field code, code length of 3, minimum code distance of 1 and information carrying bit number of 3;

(26): (73,3,41), linear cyclic code on GF (2), code length is 73, minimum code distance is 41, number of bits of carried information is 3, construction method is: a concatenation of the linear cyclic code of line (25) and the linear cyclic code of line (24);

(27): (74,3,42), the code length of the linear cyclic code on GF (2) is 74, the minimum code distance is 42, the bit number of the carried information is 3, and the construction method is as follows: -extending the linear cyclic code of the line (26) with the minimum code distance plus 1;

(28): (72,3,40), linear cyclic code over GF (2), code length 72, minimum code distance 40, number of bits of information carried 3, construction method: the linear cyclic code of row (27) is punctured at location (73 … 74).

Here, the linear cyclic code of (72,3,40) is obtained by recursion of the above cascade, truncation, repetition, expansion, or the like in the 8-long cyclic code of GF (2) field. The above figure is an example of the linear cyclic code of (72,3,40), that is, the (28) th line in the above figure is formed by the linear cyclic code (74,3,42) in the (27) th line knocking off 2 elements of the position (73 … 74), while the linear cyclic code (74,3,42) in the (27) th line is extended by the linear cyclic code (73,3,41) in the (26) th line, and so on, and the linear cyclic code (73,3,41) in the (26) th line is concatenated by the linear cyclic code (3,3,1) in the (25) th line and the linear cyclic code (70,3,40) in the (24) th line. And so on until the final (72,3,40) linear cyclic code is constructed.

Assume that two linear codes of length n in the finite field gf (q) are C1: (n, k1, d1) and C2 (n, k2, d2), where k1, k2 are the number of information bits that can be carried by the two linear codes, respectively, and d1, d2 are the minimum code distance of the two linear codes, respectively. The plotkin sum of C1 and C2 is defined as C { (u, u + v) | u ∈ C1, v ∈ C2}, where C is a linear code 2n long, the number of information bits that can be carried is k1+ k2, and the minimum code distance is min {2d1, d2}, where min is the function identification of the minimum value. The method for constructing the code sequence corresponding to (80,3,45) is as follows. Here, 80 is the sequence length of the code sequence, 3 is the number of bits of the first information carried by the code sequence, and 45 is the minimum code distance between any two code sequences of the above structure:

constructing a linear cyclic code sequence over GF (2) (80,3, 45):

(2): (16,5,8), linear cyclic code on GF (2), code length is 16, minimum code distance is 8, number of bits of information is 5, and the construction method is: plotkin of linear cyclic code of line (22) and linear cyclic code of line (1);

(3): (14,3,8), linear cyclic code on GF (2), code length 14, minimum code distance 8, number of bits of information carried 3, construction method: truncation of the linear cyclic code of line (2) at position (15 … 16);

(4): (20,3,11), linear cyclic code on GF (2), code length 20, minimum code distance 11, number of bits of information carried 3, construction method: a concatenation of the linear cyclic code of line (24) and the linear cyclic code of line (3);

(6): (27,3,15), linear cyclic code over GF (2), code length 27, minimum code distance 15, number of bits carrying information 3, construction method: a concatenation of the linear cyclic code of line (24) and the linear cyclic code of line (5);

(8): (34,3,19), the code length of the linear cyclic code on GF (2) is 34, the minimum code distance is 19, the number of bits of the carried information is 3, and the construction method comprises the following steps: a concatenation of the linear cyclic code of line (24) and the linear cyclic code of line (7);

(10): (41,3,23), linear cyclic code over GF (2), code length 41, minimum code distance 23, number of bits carrying information 3, construction method: a concatenation of the linear cyclic code of line (24) and the linear cyclic code of line (9);

(12): (48,3,27), linear cyclic code on GF (2), code length 48, minimum code distance 27, number of bits of information carried 3, construction method: a concatenation of the linear cyclic code of line (24) and the linear cyclic code of line (11);

(14): (55,3,31), linear cyclic code on GF (2), the code length is 55, the minimum code distance is 31, the number of bits of carried information is 3, and the construction method is as follows: a concatenation of the linear cyclic code of line (24) and the linear cyclic code of line (13);

(16): (62,3,35), linear cyclic code on GF (2), code length 62, minimum code distance 35, number of bits of information carried 3, construction method: a concatenation of the linear cyclic code of line (24) and the linear cyclic code of line (15);

(18): (69,3,39), the code length of the linear cyclic code on GF (2) is 69, the minimum code distance is 39, the number of bits of the carried information is 3, and the construction method is as follows: a concatenation of the linear cyclic code of line (24) and the linear cyclic code of line (17);

(19): (70,3,40), linear cyclic code on GF (2), code length is 70, minimum code distance is 40, bit number of carried information is 3, construction method is: -extending the linear cyclic code of the line (18) with the minimum code distance plus 1;

(20): (4,1, 4'), linear cyclic codes on GF (2), wherein the code length is 4, the minimum code distance is 4, and the number of bits carrying information is 1;

(21): (4,3,2), a code length of the linear cyclic code on GF (2) is 4, a minimum code distance is 2, and the number of bits carrying information is 3;

(22): (8,4,4), linear cyclic code over GF (2), code length 8, minimum code distance 4, number of bits carrying information 4, construction method: plotkin for the linear cyclic code for line (21) and the linear cyclic code for line (20);

(23): (7,4,3), linear cyclic code over GF (2), code length 7, minimum code distance 3, number of bits carrying information 4, construction method: a linear cyclic code puncturing rows (22) at position 1;

(24): (6,3,3), linear cyclic code on GF (2), code length is 6, minimum code distance is 3, number of bits carrying information is 3, construction method is: truncating the linear cyclic code of row (23) at position 1;

(25): (76,3,43), linear cyclic code on GF (2), code length 76, minimum code distance 43, number of bits of information carried 3, construction method: a concatenation of the linear cyclic code of line (24) and the linear cyclic code of line (19);

(26): (77,3,44), linear cyclic code on GF (2), code length 77, minimum code distance 44, number of bits of information carried 3, construction method: -extending the linear cyclic code of the line (25), the minimum code distance plus 1;

(27): (3,3,1), linear cyclic code on GF (2), 3-length full-field code, code length of 3, minimum code distance of 1 and information carrying bit number of 3;

(28): (80,3,45), linear cyclic code on GF (2), the code length is 80, the minimum code distance is 45, the number of bits of carried information is 3, and the construction method is as follows: concatenation of the linear cyclic code of line (27) and the linear cyclic code of line (26).

Here, the cyclic code of (80,3,45) is obtained recursively by 8-long linear cyclic codes in the GF (2) domain by the above method of concatenation, truncation, repetition, or extension. In the above figure, the linear cyclic code of (80,3,45) is taken as an example, the line (28) in the above figure is formed by cascading the linear cyclic code (3,3,1) in the line (27) and the linear cyclic code (77,3,44) in the line (26), the linear cyclic code (77,3,44) in the line (26) is expanded by the linear cyclic code (76,3,43) in the line (25), and so on, and the linear cyclic code (76,3,43) in the line (25) is cascaded by the linear cyclic code (6,3,3) in the line (24) and the linear cyclic code (70,3,40) in the line (19). And so on to the first row.

By adopting the above linear cyclic code sequence to carry the first information, the decoding performance of the first signal can be optimized.

According to the communication method provided by the embodiment of the application, the network equipment sends information by using the time-frequency resources other than the time-frequency resources mapped by the main synchronous signals, and the terminal equipment receives the signals according to the received information, so that the accurate transmission of the signals can be ensured under the condition of smaller resource occupancy rate and signaling overhead, the utilization rate of the time-frequency resources is improved, and the detection complexity of the terminal equipment is reduced.

The method of the embodiments of the present application is set forth above in detail and the apparatus of the embodiments of the present application is provided below.

Based on the same concept of the communication method in the foregoing embodiment, as shown in fig. 7, the present embodiment further provides a communication apparatus 1000, which can be applied to the communication method shown in fig. 3. The communication apparatus 1000 may be the terminal device 200 shown in fig. 2, or may be a component (e.g., a chip) applied to the terminal device 200. The communication apparatus 1000 includes a transceiver unit 11. Wherein:

a transceiving unit 11, configured to receive first information sent by a network device on a first time-frequency resource; the first time frequency resource is a time frequency resource except a second time frequency resource mapped by a main synchronous signal, and the first time frequency resource and the second time frequency resource are positioned in the same common signal block; and

the transceiver unit 11 is further configured to receive a second signal according to the first information.

The more detailed description about the transceiver unit 11 can be directly obtained by referring to the related description about the terminal device in the embodiment of the method shown in fig. 3, which is not repeated herein.

Based on the same concept of the communication method in the foregoing embodiment, as shown in fig. 8, the present embodiment further provides a communication device 2000, which can be applied to the communication method shown in fig. 3. The communication device 2000 may be the network device 100 shown in fig. 2, or may be a component (e.g., a chip) applied to the network device 100. The communication device 2000 includes: a transceiver unit 21. Wherein:

a transceiving unit 21, configured to send first information to a terminal device on a first time-frequency resource; the first time frequency resource is a time frequency resource except a second time frequency resource mapped by a main synchronous signal, and the first time frequency resource and the second time frequency resource are positioned in the same common signal block; and

the transceiver unit 21 is further configured to send a second signal to the terminal device according to the first information.

The more detailed description about the transceiver unit 21 can be directly obtained by referring to the related description about the network device in the embodiment of the method shown in fig. 3, which is not described herein again.

The embodiment of the application also provides a communication device, and the communication device is used for executing the communication method. Some or all of the above communication methods may be implemented by hardware or may be implemented by software.

Alternatively, the communication device may be a chip or an integrated circuit when embodied.

Alternatively, when part or all of the communication method of the above embodiment is implemented by software, the communication apparatus includes: a memory for storing a program; a processor for executing the program stored in the memory, when the program is executed, the communication apparatus is enabled to implement the communication method provided by the above-mentioned embodiment.

Alternatively, the memory may be a physically separate unit or may be integrated with the processor.

Alternatively, when part or all of the communication method of the above embodiments is implemented by software, the communication apparatus may include only the processor. The memory for storing the program is located outside the communication device and the processor is connected to the memory by means of a circuit/wire for reading and executing the program stored in the memory.

The processor may be a Central Processing Unit (CPU), a Network Processor (NP), or a combination of a CPU and an NP.

The processor may further include a hardware chip. The hardware chip may be an application-specific integrated circuit (ASIC), a Programmable Logic Device (PLD), or a combination thereof. The PLD may be a Complex Programmable Logic Device (CPLD), a field-programmable gate array (FPGA), a General Array Logic (GAL), or any combination thereof.

The memory may include volatile memory (volatile memory), such as random-access memory (RAM); the memory may also include a non-volatile memory (non-volatile) such as a flash memory (flash memory), a Hard Disk Drive (HDD) or a solid-state drive (SSD); the memory may also comprise a combination of memories of the kind described above.

Fig. 9 shows a simplified schematic diagram of a terminal device. For easy understanding and illustration, in fig. 9, the terminal device is exemplified by a mobile phone. As shown in fig. 9, for one embodiment, a terminal device may include a processor. The processor is used for implementing the method executed by the terminal device in the above embodiments.

The processor is mainly used for processing communication protocols and communication data, controlling the terminal equipment, executing software programs, processing data of the software programs and the like. The terminal device may further comprise a memory, which is mainly used for storing software programs and data. The terminal device may further include any one of a radio frequency circuit, an antenna, and an input/output device, where the radio frequency circuit is mainly used for conversion between a baseband signal and a radio frequency signal and processing the radio frequency signal, the antenna is mainly used for receiving and transmitting the radio frequency signal in the form of electromagnetic waves, and the input/output device, such as a touch screen, a display screen, and a keyboard, is mainly used for receiving data input by a user and outputting data to the user. It should be noted that some kinds of terminal devices may not have input/output devices.

As another embodiment, a terminal device includes a processor and a transceiver. A processor coupled to the transceiver device, the processor configured to execute a computer program or instructions to control the transceiver device to receive and transmit information; when the processor executes the computer program or the instructions, the processor is further configured to implement the method performed by the terminal device in the above embodiments.

In the embodiment of the present application, an antenna and a radio frequency circuit having a transceiving function may be regarded as a receiving unit and a transmitting unit (which may also be collectively referred to as a transceiving unit) of a terminal device, and a processor having a processing function may be regarded as a processing unit of the terminal device. As shown in fig. 9, the terminal device includes a transceiving unit 31 and a processing unit 32. The transceiving unit 31 may also be referred to as a receiver/transmitter, a receiver/transmitter circuit, etc. The processing unit 32 may also be referred to as a processor, processing board, processing module, processing device, etc.

For example, in one embodiment, the transceiving unit 31 is configured to perform the functions of the terminal device in steps S102 and S104 in the embodiment shown in fig. 3.

As a further embodiment, the terminal device comprises a processor and a memory, the memory storing a computer program or instructions, the processor being configured to implement the method performed by the terminal device in the above embodiments when the processor executes the computer program or instructions.

When data needs to be sent, the processor performs baseband processing on the data to be sent and outputs baseband signals to the radio frequency circuit, and the radio frequency circuit performs radio frequency processing on the baseband signals and sends the radio frequency signals to the outside in the form of electromagnetic waves through the antenna. When data is sent to the terminal equipment, the radio frequency circuit receives radio frequency signals through the antenna, converts the radio frequency signals into baseband signals and outputs the baseband signals to the processor, and the processor converts the baseband signals into the data and processes the data. For ease of illustration, only one memory and processor are shown in FIG. 9. In an actual end device product, there may be one or more processors and one or more memories. The memory may also be referred to as a storage medium or a storage device, etc. The memory may be provided independently of the processor, or may be integrated with the processor, which is not limited in this embodiment.

In one embodiment, a communication device is provided, comprising a processor and a transceiver, the processor being coupled to the transceiver, the processor being configured to execute a computer program or instructions to control the transceiver to receive and transmit information; when the processor executes the computer program or the instructions, the processor is further configured to implement the method performed by the network device in the above method embodiment.

Fig. 10 shows a simplified schematic diagram of a network device. The network device includes a radio frequency signal transceiving and converting part and a 42 part, and the radio frequency signal transceiving and converting part includes a transceiving unit 41 part. The radio frequency signal receiving, transmitting and converting part is mainly used for receiving and transmitting radio frequency signals and converting the radio frequency signals and baseband signals; the 42 part is mainly used for baseband processing, network equipment control and the like. The transceiving unit 41 may also be referred to as a receiver/transmitter, a receiver/transmitter circuit, etc. Portion 42 is generally a control center of the network device and may be generally referred to as a processing unit for controlling the network device to perform the steps described above with respect to the network device in fig. 3. Reference is made in particular to the description of the relevant part above.

For example, in one embodiment, the transceiving unit 41 is configured to perform the functions of the network device in steps S101 and S103 in the embodiment shown in fig. 3.

In another embodiment, a communication apparatus is provided, which includes a processor configured to implement the method performed by the network device in the above method embodiment.

In yet another embodiment, a communication apparatus is provided, which includes a processor and a memory, where the memory stores a computer program or instructions, and when the processor executes the computer program or instructions, the processor is configured to implement the method performed by the network device in the above method embodiment.

As shown in fig. 10, the portion 42 may include one or more boards, each board may include one or more processors and one or more memories, and the processors are configured to read and execute programs in the memories to implement baseband processing functions and control of the network devices. If a plurality of single boards exist, the single boards can be interconnected to increase the processing capacity. As an alternative implementation, multiple boards may share one or more processors, multiple boards may share one or more memories, or multiple boards may share one or more processors at the same time.

The embodiments of the present application also provide a computer-readable storage medium, in which a computer program or instructions are stored, and when the computer program or instructions are executed, the method in the above embodiments is implemented.

The embodiments of the present application also provide a computer program product, in which a computer program or instructions are stored, and when the computer program or instructions are executed, the method in the above embodiments is implemented.

An embodiment of the present application further provides a communication system, which includes the terminal device and the network device in the foregoing embodiments.

It is clear to those skilled in the art that, for convenience and brevity of description, the specific working processes of the above-described systems, apparatuses and units may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again. In addition, the method embodiments and the device embodiments may also refer to each other, and the same or corresponding contents in different embodiments may be referred to each other, which is not described in detail.

In the several embodiments provided in the present application, it should be understood that the disclosed system, apparatus and method may be implemented in other ways. For example, the division of the unit is only one logical function division, and other division may be implemented in practice, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. The shown or discussed mutual coupling, direct coupling or communication connection may be an indirect coupling or communication connection of devices or units through some interfaces, and may be in an electrical, mechanical or other form.

Units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.

In the above embodiments, the implementation may be wholly or partially realized by software, hardware, firmware, or any combination thereof. When implemented in software, may be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. The procedures or functions according to the embodiments of the present application are wholly or partially generated when the computer program instructions are loaded and executed on a computer. The computer may be a general purpose computer, a special purpose computer, a network of computers, or other programmable device. The computer instructions may be stored on or transmitted over a computer-readable storage medium. The computer instructions may be transmitted from one website, computer, server, or data center to another website, computer, server, or data center by wire (e.g., coaxial cable, fiber optic, Digital Subscriber Line (DSL)), or wirelessly (e.g., infrared, wireless, microwave, etc.). The computer-readable storage medium can be any available medium that can be accessed by a computer or a data storage device, such as a server, a data center, etc., that includes one or more of the available media. The usable medium may be a read-only memory (ROM), or a Random Access Memory (RAM), or a magnetic medium, such as a floppy disk, a hard disk, a magnetic tape, a magnetic disk, or an optical medium, such as a Digital Versatile Disk (DVD), or a semiconductor medium, such as a Solid State Disk (SSD).

Claims

1. A method of communication, comprising:

the method comprises the steps that terminal equipment receives first information sent by network equipment on a first time-frequency resource; the first time frequency resource is a time frequency resource except a second time frequency resource mapped by a main synchronous signal, and the first time frequency resource and the second time frequency resource are positioned in the same common signal block;

and the terminal equipment receives a second signal according to the first information.

2. A method of communication, comprising:

the network equipment sends first information to the terminal equipment on a first time-frequency resource; the first time frequency resource is a time frequency resource except a second time frequency resource mapped by a main synchronous signal, and the first time frequency resource and the second time frequency resource are positioned in the same common signal block;

and the network equipment sends a second signal to the terminal equipment according to the first information.

3. The method according to claim 1 or 2, wherein the first time-frequency resource and the second time-frequency resource are located in the same time unit and occupy different frequency domain resources, and the first time-frequency resource and the second time-frequency resource are contiguous in frequency domain.

4. The method according to any of claims 1 to 3, wherein the number of physical resource blocks occupied by the first time/frequency resource is equal to the difference between the number of physical resource blocks occupied by the physical broadcast channel in a single time unit and the number of physical resource blocks occupied by the primary synchronization signal in a single time unit.

5. The method of any one of claims 1 to 4, wherein the first information comprises one or more of:

offset indication information of the common signal block;

identification information of the primary common signal block;

repetition pattern information of the common signal block.

6. The method of claim 5, wherein the offset indication information of the common signal block comprises a cycle number of the common signal block or an index of a first common signal block transmitted when the network device accesses a channel through Listen Before Talk (LBT).

7. The method of claim 5, wherein the primary common signal block is one common signal block used for determining a control channel resource location of minimum remaining system information.

8. The method of claim 5, wherein the repetition pattern information of the common signal block comprises one or more of the following information: the number of repetitions of the common signal block, and the interval between two adjacent common signal blocks.

9. The method of any one of claims 1-8, wherein the first information is sent in a first signal that carries the first information via a linear cyclic code sequence.

10. The method of claim 9, wherein the first signal has a demodulation reference signal density of 1/3, 1/4, or 1/6.

11. The method of claim 9 or 10, wherein the linear cyclic code sequence is a code sequence satisfying a maximum code distance between any two of the linear cyclic code sequences.

12. The method according to any of claims 1 to 11, wherein the first time-frequency resource further comprises a third time-frequency resource located in the same time unit as the common signal block and occupying a different frequency-domain resource, the third time-frequency resource being contiguous with the common signal block in the frequency domain.

13. A communications apparatus, comprising:

the receiving and sending unit is used for receiving first information sent by the network equipment on a first time-frequency resource; the first time frequency resource is a time frequency resource except a second time frequency resource mapped by a main synchronous signal, and the first time frequency resource and the second time frequency resource are positioned in the same common signal block;

the transceiver unit is further configured to receive a second signal according to the first information.

14. A communications apparatus, comprising:

the receiving and sending unit is used for sending first information to the terminal equipment on a first time-frequency resource; the first time frequency resource is a time frequency resource except a second time frequency resource mapped by a main synchronous signal, and the first time frequency resource and the second time frequency resource are positioned in the same common signal block;

the transceiver unit is further configured to send a second signal to the terminal device according to the first information.

15. The apparatus according to claim 13 or 14, wherein the first time-frequency resource and the second time-frequency resource are located in the same time unit and occupy different frequency domain resources, and the first time-frequency resource and the second time-frequency resource are contiguous in frequency domain.

16. A communications device according to any one of claims 13 to 15, wherein the number of physical resource blocks occupied by the first time/frequency resource is equal to the difference between the number of physical resource blocks occupied by the physical broadcast channel in a single time unit and the number of physical resource blocks occupied by the primary synchronization signal in a single time unit.

17. The communications device of any of claims 13 to 16, wherein the first information comprises one or more of:

offset indication information of the common signal block;

identification information of the primary common signal block;

repetition pattern information of the common signal block.

18. The communications apparatus of claim 17, wherein the offset indication information of the common signal block comprises a cycle number of the common signal block or an index of a first common signal block transmitted when the network device accesses a channel through Listen Before Talk (LBT).

19. The communications apparatus of claim 17, wherein the primary common signal block is a common signal block used for determining a control channel resource location of minimum remaining system information.

20. The communications apparatus of claim 17, wherein the repetition pattern information of the common signal block comprises one or more of: the number of repetitions of the common signal block, and the interval between two adjacent common signal blocks.

21. A communications device as claimed in any one of claims 13 to 20, wherein the first information is transmitted in a first signal carried by a linear cyclic code sequence.

22. The communications apparatus of claim 21, wherein the first signal has a demodulation reference signal density of 1/3, 1/4, or 1/6.

23. The apparatus according to claim 21 or 22, wherein the linear cyclic code sequence is a code sequence satisfying a maximum code distance between any two of the linear cyclic code sequences.

24. The communications apparatus according to any one of claims 13 to 23, wherein the first time-frequency resource further comprises a third time-frequency resource located in the same time unit as the common signal block and occupying a different frequency-domain resource, the third time-frequency resource being contiguous with the common signal block in frequency domain.

25. A communication apparatus comprising a transceiver, a memory and a processor, the memory having stored thereon a computer program, wherein the processor, when executing the computer program, implements the method of any one of claims 1 to 12.

26. A computer-readable storage medium having instructions stored therein, which when run on a computer, cause the computer to perform the method of any one of claims 1 to 12.

27. A computer program product comprising instructions for performing the method according to any one of claims 1 to 12 when the instructions are run on a computer.