CN114499800A - Method and communication device for signal transmission - Google Patents

Abstract

The application provides a signal transmission method, wherein an SSB structure sent by a network device is not fixed, that is, the relative composition mode of an SS and a PBCH in an SSB is not fixed, the network device can perform self-adaptive adjustment according to the allocated communication bandwidth, and various feasible modes are provided, so that the terminal device can determine the specific SSB composition mode, and information transmitted in the SSB is demodulated. The self-adaptive SSB structure in the method can ensure compatibility with different frequency bands and bandwidths distributed by different operators, and can reduce the number of symbols occupied by the SSB, thereby reducing the system overhead.

Description

Method and communication device for signal transmission

Technical Field

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

Background

The development of mobile services places increasing demands on the data rate and efficiency of wireless communications. Beamforming techniques are used to limit the energy of the transmitted signal to a certain beam direction, thereby increasing the efficiency of signal and reception. The beam forming technology can effectively enlarge the transmission range of wireless signals and reduce signal interference, thereby achieving higher communication efficiency and obtaining higher network capacity. However, in a communication network using a beamforming technique, a transmit beam and a receive beam need to be matched first, so that a gain from a transmitting end to a receiving end is maximized, otherwise, relatively high communication efficiency cannot be obtained. And to achieve full coverage requires the base station side beams to scan. Therefore, in the existing 5G protocol, a base station is supported to transmit a plurality of synchronization signal and PBCH blocks (SSBs), and each SSB can transmit with a different beam, thereby ensuring that the SSBs can be received in the entire coverage area. I.e. terminals of the whole area are able to access the network.

Referring to fig. 1, fig. 1 is a schematic view of a conventional SSB composition. The SSB is composed of Primary Synchronization Signals (PSS), Secondary Synchronization Signals (SSS), and a Physical Broadcast Channel (PBCH). In the 5G communication protocol, one SSB is specified to occupy 4 Orthogonal Frequency Division Multiplexing (OFDM) symbols, where PSS occupies one symbol, SSS occupies one symbol, and PBCH occupies 3 symbols (shares one symbol with SSS). Referring to fig. 2, fig. 2 is a diagram illustrating an OFDM symbol position in which an SSB is located in one slot. As shown in FIG. 2, the first SSB is transmitted on the 5th to 8 th OFDM symbols, and the second SSB is transmitted on the 9 th to 12 th OFDM symbols.

The frequency domain resources divided by the SSB cannot be used for transmitting data to the terminal device, and the main reason is that when the terminal device performs cell measurement, the SSB is received by scanning a receiving beam, so that the SSB cannot be received by using a specific receiving beam, and further, the data of different frequency domain resources transmitted at the same time as the SSB cannot be received by using the specific receiving beam, which causes a large resource overhead.

Disclosure of Invention

The signal transmission method can ensure compatibility with different frequency bands and bandwidths allocated by different operators, and can effectively reduce the number of symbols occupied by SSB, thereby reducing the system overhead.

In a first aspect, a method for signal transmission is provided, including: the network equipment sends a first synchronization information block (SSB), wherein the composition mode of the first SSB is determined based on a first composition mode, and the first composition mode is one of multiple SSB composition modes; the network equipment indicates all or part of the composition mode of the first SSB to the terminal equipment through the first information, wherein the first information comprises the information of the composition mode of the first SSB.

In the technical scheme, compared with the prior art, the SSB structure sent by the network equipment is not fixed, namely the relative composition mode of SS and PBCH in one SSB is not fixed, the self-adaptive SSB structure in the method can ensure the compatibility of different frequency bands and bandwidths distributed by different operators, the number of symbols occupied by the SSB can be reduced, thereby reducing the system overhead, and simultaneously, the terminal equipment can determine the specific SSB composition mode through the indication information, thereby demodulating the information transmitted in the SSB.

With reference to the first aspect, in certain implementations of the first aspect, the method further includes: the network device determines the composition of the first SSB based on the actual bandwidth of the operator.

With reference to the first aspect, in some implementations of the first aspect, the first SSB includes a synchronization signal SS and a physical broadcast channel PBCH, and the SS and the PBCH constitute the first SSB in a frequency-division, time-division, or frequency-division manner, where the SS occupies consecutive orthogonal frequency-division multiplexing, OFDM, symbols, or the SS occupies non-consecutive OFDM symbols, and part or all of the PBCH is higher or lower than frequencies of the SS.

With reference to the first aspect, in certain implementations of the first aspect, the first SSB includes a synchronization signal SS, the first information includes the SS, and the network device indicates, through the first information, all or part of components of the first SSB, including: the network device indicates all or part of the composition of the first SSB through the sequence of SSs.

With reference to the first aspect, in certain implementation manners of the first aspect, the first information includes a downlink reference signal RS, and the network device indicates, through the first information, all or part of a component manner of the first SSB, including: and the network equipment indicates all or part of the composition mode of the first SSB through the sequence of the RS.

With reference to the first aspect, in some implementations of the first aspect, the network device sends a second SSB to the terminal device, where the second SSB is an SSB of a second cell, the second cell is a neighboring cell of the first cell, and the first cell is a cell where the terminal device resides according to the first SSB.

In a second aspect, a method of signal transmission is provided, including: the method comprises the steps that terminal equipment receives a first synchronization signal block SSB sent by network equipment, the composition mode of the first SSB is determined based on a first composition mode, the first composition mode is one of multiple SSB composition modes, and the first SSB comprises a synchronization signal SS and a physical broadcast channel PBCH; the terminal equipment determines the composition mode of the first SSB by blindly detecting the position of the PBCH and/or by detecting first information, wherein the first information comprises information of all or part of the composition mode of the first SSB.

In the above technical solution, compared with the prior art, the SSB structure sent by the network device is not fixed, that is, the relative composition manner of the SS and the PBCH in one SSB is not fixed, the adaptive SSB structure in the method can ensure compatibility with different frequency bands and bandwidths allocated by different operators, and the number of symbols occupied by the SSB can be reduced, thereby reducing the system overhead, and meanwhile, the terminal device can determine the specific SSB composition manner through the indication information sent by the network device, thereby demodulating the information transmitted in the SSB.

With reference to the second aspect, in some implementations of the second aspect, the SS and the PBCH constitute the first SSB in a frequency-division, or time-division, or frequency-division manner, wherein the SS occupies consecutive orthogonal frequency division multiplexing, OFDM, symbols, or the SS occupies non-consecutive OFDM symbols, and part or all of the PBCH is higher or lower than frequencies of the SS.

With reference to the second aspect, in certain implementations of the second aspect, the first information includes the SS; and the terminal equipment determines the composition mode of the first SSB by detecting the first information, and the method comprises the following steps: and the terminal equipment determines all or part of the composition mode of the first SSB by detecting the sequence of the SS.

With reference to the second aspect, in some implementations of the second aspect, the first information includes a downlink reference signal, RS, and the method further includes: the terminal equipment receives the RS from the network equipment; and the terminal equipment determines the composition mode of the first SSB by detecting the first information, and the method comprises the following steps: and the terminal equipment determines all or part of the composition mode of the first SSB by detecting the sequence of the RS.

With reference to the second aspect, in some implementations of the second aspect, the first information includes part or all of a component manner of the first SSB provided by an identity SIM card of the operator.

With reference to the second aspect, in certain implementations of the second aspect, the method further includes: the terminal equipment resides in the first cell according to the first SSB; and the terminal equipment measures a second cell according to a second SSB, wherein the second cell is a neighboring cell of the first cell, and the second SSB is an SSB of the second cell.

With reference to the second aspect, in some implementations of the second aspect, before the terminal device performs measurement on the second cell according to the second SSB, the method further includes: when the measurement of the second cell is the same-frequency measurement, the terminal equipment determines a second SSB composition mode, wherein the second SSB is the same as the first SSB; and/or when the measurement of the second cell is the pilot frequency measurement, the terminal device receives the second SSB sent by the network device.

Optionally, under the pilot frequency measurement, the terminal device measures at most N different composition modes. Wherein, N is a positive integer, and can be reported as a capability or fixed in a communication protocol.

According to the technical scheme, the complexity of terminal detection on common-frequency measurement and different-frequency measurement can be reduced.

In a third aspect, there is provided a communication device having the functionality to implement the method of the first aspect or any possible implementation thereof. The functions may be implemented by hardware, or by hardware executing corresponding software. The hardware or software includes one or more units corresponding to the above functions.

In a fourth aspect, the present application provides a communication device having the functionality to implement the method of the second aspect or any possible implementation thereof. The functions may be implemented by hardware, or by hardware executing corresponding software. The hardware or software includes one or more units corresponding to the above functions.

In a fifth aspect, the present application provides a communication device comprising at least one processor coupled to at least one memory, the at least one memory storing a computer program or instructions, the at least one processor being configured to retrieve and execute the computer program or instructions from the at least one memory such that the communication device performs the method of the first aspect or any possible implementation thereof.

In one example, the communication device may be a network device.

In a sixth aspect, the present application provides a communication device comprising at least one processor coupled to at least one memory, the at least one memory storing a computer program or instructions, the at least one processor being configured to retrieve and execute the computer program or instructions from the at least one memory so that the communication device performs the method of the second aspect or any possible implementation thereof.

In one example, the communication device may be a terminal device.

In a seventh aspect, the present application provides a network device comprising a processor, a memory, and a transceiver. Wherein the memory is configured to store a computer program, and the processor is configured to call and run the computer program stored in the memory, and control the transceiver to transmit and receive signals, so as to make the communication device execute the method according to the first aspect or any possible implementation manner thereof.

In an eighth aspect, the present application provides a terminal device comprising a processor, a memory, and a transceiver. Wherein the memory is used for storing the computer program, and the processor is used for calling and running the computer program stored in the memory, and controlling the transceiver to transmit and receive signals, so as to make the communication device execute the method as in the second aspect or any possible implementation manner thereof.

In a ninth aspect, the present application provides a communication device comprising a processor and a communication interface for receiving a signal and transmitting the received signal to the processor, the processor processing the signal to cause the communication device to perform the method as in the first aspect or any possible implementation thereof.

In a tenth aspect, the present application provides a communication device comprising a processor and a communication interface for receiving and transmitting a signal received to the processor, the processor processing the signal to cause the communication device to perform the method as in the second aspect or any possible implementation thereof.

Alternatively, the communication interface may be an interface circuit, an input/output interface, or the like, and the processor may be a processing circuit, a logic circuit, or the like.

Alternatively, the communication device according to the ninth aspect or the tenth aspect may be a chip or an integrated circuit.

In an eleventh aspect, the present application provides a computer-readable storage medium having stored thereon computer instructions which, when run on a computer, cause a method as in the first aspect or any possible implementation thereof to be performed.

In a twelfth aspect, the present application provides a computer readable storage medium having stored thereon computer instructions which, when run on a computer, cause the method as in the second aspect or any possible implementation thereof to be performed.

In a thirteenth aspect, the present application provides a computer program product comprising computer program code to, when run on a computer, cause a method as in the first aspect or any possible implementation thereof to be performed.

In a fourteenth aspect, the present application provides a computer program product comprising computer program code which, when run on a computer, causes the method as in the second aspect or any possible implementation thereof to be performed.

In a fifteenth aspect, the present application provides a wireless communication system, including the network device according to the seventh aspect and/or the terminal device according to the eighth aspect.

Drawings

FIG. 1 is a schematic diagram of the conventional SSB composition.

Fig. 2 is a diagram illustrating an OFDM symbol position where an SSB is located in one slot.

Fig. 3 is a schematic diagram of a communication system suitable for use with embodiments of the present application.

Fig. 4 is a schematic flow chart of a method of signal transmission provided herein.

Fig. 5 is a schematic diagram of the composition of three different wideband SSBs proposed in the present application.

Fig. 6 is a schematic diagram of the composition of six different narrow-band SSBs proposed in the present application.

Fig. 7 is a schematic block diagram of a communication device 1000 provided herein.

Fig. 8 is a schematic block diagram of a communication device 2000 provided herein.

Fig. 9 is a schematic configuration diagram of the communication device 10 provided in the present application.

Fig. 10 is a schematic configuration diagram of the communication device 20 provided in the present application.

Detailed Description

The technical solution in the present application will be described below with reference to the accompanying drawings.

The technical scheme of the embodiment of the application can be applied to various communication systems, for example: a global system for mobile communications (GSM) system, a Code Division Multiple Access (CDMA) system, a Wideband Code Division Multiple Access (WCDMA) system, a General Packet Radio Service (GPRS), a Long Term Evolution (LTE) system, an LTE Frequency Division Duplex (FDD) system, an LTE Time Division Duplex (TDD) system, universal Mobile Telecommunications System (UMTS), Worldwide Interoperability for Microwave Access (WiMAX) communication system, fifth generation (5G) system or New Radio (NR), device-to-device (D2D) communication system, machine communication system, internet of vehicles communication system, satellite communication system or future communication system, etc.

For the understanding of the embodiments of the present application, a communication system suitable for the embodiments of the present application will be described in detail with reference to fig. 3. The communication system may include at least one network device and at least one terminal device. The network device and the terminal device may communicate via a wireless link. A single network device may transmit data or control signaling to a single or multiple terminal devices, or multiple network devices may transmit data or control signaling for a single terminal device at the same time.

In the embodiment of the present application, the network device may be any device having a wireless transceiving function. Network devices include, but are not limited to: evolved Node B (eNB), Radio Network Controller (RNC), Node B (NB), home base station (e.g., home evolved Node B, or home Node B, HNB), baseband unit (BBU), Access Point (AP) in wireless fidelity (WIFI) system, wireless relay Node, wireless backhaul Node, Transmission Point (TP) or Transmission and Reception Point (TRP), etc., and may also be a gNB or transmission point (TRP or TP) in 5G (e.g., NR) system, or one or a group (including multiple antenna panels) of antenna panels of a base station in a 5G system, or, may be a network node, such as a baseband unit (BBU), or Distributed Units (DUs), etc., or may also be satellites or satellite gateway stations, etc.

The network device in the embodiment of the present application may also refer to a Central Unit (CU) or a Distributed Unit (DU), or the network device may also be composed of a CU and a DU. CU and DU can be understood as the division of the base stations from a logical functional point of view. The CU and the DU may be physically separated or may be deployed together, which is not specifically limited in this embodiment of the present application. One CU can be connected to one DU, or a plurality of DUs can share one CU, which can save cost and facilitate network expansion. The CU and the DU may be divided according to a protocol stack, where one possible manner is to deploy a Radio Resource Control (RRC), a service data adaptation protocol Stack (SDAP), and a Packet Data Convergence Protocol (PDCP) layer in the CU, and deploy the remaining Radio Link Control (RLC), a Medium Access Control (MAC) layer, and a physical layer in the DU. The protocol stack segmentation method is not limited in the invention, and other segmentation methods can be provided, specifically, TR38.801 v14.0.0 can be referred to. The CU and DU are connected via an F1 interface. The CU represents the gbb connected to the core network via the Ng interface.

The network device in the embodiment of the present application may also refer to a centralized unit control plane (CU-CP) node or a centralized unit user plane (CU-UP) node, or the network device may also be a CU-CP and a CU-UP. Wherein the CU-CP is responsible for control plane functions, mainly comprising RRC and PDCP-C. The PDCP-C is mainly responsible for encryption and decryption of control plane data, integrity protection, data transmission and the like. The CU-UP is responsible for user plane functions, including mainly SDAP and PDCP-U. Wherein the SDAP is mainly responsible for processing data of a core network and mapping flow to a bearer. The PDCP-U is mainly responsible for encryption and decryption of a data plane, integrity protection, header compression, serial number maintenance, data transmission and the like. Wherein the CU-CP and CU-UP are connected via the E1 interface. The CU-CP represents the connection of the gNB to the core network via the Ng interface. Via F1-C (control plane) and DU connection. CU-UP is connected with DU via F1-U (user plane). Of course, there is also a possible implementation where PDCP-C is also in CU-UP. It should be noted that a CU may be divided into an access network device and a Core Network (CN) device, which is not limited in this application.

In the embodiments of the present application, a terminal device may also be referred to as a User Equipment (UE), an access terminal, a subscriber unit, a subscriber station, a mobile station, a remote terminal, a mobile device, a user terminal, a wireless communication device, a user agent, or a user equipment. The terminal device in the embodiment of the present application may be a mobile phone (mobile phone), a tablet (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 security (transportation security), a wireless terminal in smart city (smart city), a wireless terminal in smart home (smart home), a cellular phone, a cordless phone, a session initiation protocol (session initiation protocol, SIP) phone, a wireless local loop (wireless local area, PDA) station, a personal digital assistant (wldigital assistant), a handheld wireless communication device with a wireless transceiving function, and a handheld personal communication device with a wireless communication function, A computing device or other processing device connected to a wireless modem, an in-vehicle device, a wearable device, a terminal device in a 5G network, a terminal device in a non-public network, etc.

Wherein, wearable equipment also can be called as wearing formula smart machine, is the general term of using wearing formula technique to carry out intelligent design, developing the equipment that can dress to daily wearing, like glasses, gloves, wrist-watch, dress and shoes etc.. A wearable device is a portable device that is worn directly on the body or integrated into the clothing or accessories of the user. The wearable device is not only a hardware device, but also realizes powerful functions through software support, data interaction and cloud interaction. The generalized wearable smart device includes full functionality, large size, and can implement full or partial functionality without relying on a smart phone, such as: smart watches or smart glasses and the like, and only focus on a certain type of application functions, and need to be used in cooperation with other devices such as smart phones, such as various smart bracelets for physical sign monitoring, smart jewelry and the like.

In addition, the terminal device may also be a terminal device in an internet of things (IoT) system. The IoT is an important component of future information technology development, and is mainly technically characterized in that articles are connected with a network through a communication technology, so that an intelligent network with man-machine interconnection and object interconnection is realized.

To facilitate understanding of the embodiments of the present application, first, the terms referred to in the present application will be briefly described.

1. Synchronization Signal (SS): the SS may include a PSS and an SSs, and the synchronization signals are used for time-frequency synchronization of the terminal device and the network side, and detection of a cell physical Identifier (ID). The PSS is used for terminal time-frequency synchronization and cell detection, the SSS is used for transmitting a cell physical identification ID, and the PSS and the SSS can be combined together to realize the functions.

2. PBCH: for transmitting system information.

3. And (3) SSB: the SS and PBCH are used for realizing time synchronization between the terminal equipment and the network side, detecting a cell physical Identifier (ID) and acquiring system information. The prior art SSB is composed as shown in fig. 1, and in the time domain, the SSB is composed of 4 OFDM symbols, and is numbered in the SSB in an increasing order from 0 to 3. In the frequency domain, the SSB consists of 240 consecutive subcarriers, and the subcarrier numbers sequentially increase from 0 to 239. The PSS is located at the position of the 0 th OFDM symbol in the SSB block in the time domain, and the frequency domain occupies 126 subcarriers between 56 th and 182 th. The SSS is located at the position of the 2 nd OFDM symbol in the SSB block in the time domain, and the frequency domain occupies 126 subcarriers between 56 th and 182 th. When PBCH occupies the 1 st and 3 rd OFDM symbol positions in the SSB block, the frequency domain occupies 240 subcarriers between 0 and 239; the PBCH occupies 96 subcarriers between 0 th to 47 th and 192 th to 239 th in frequency domain when occupying the 2 nd symbol position in the SSB block. And a frequency multiplexing mode is adopted between the PBCH signal and the corresponding DMRS signal, wherein 1 DMRS signal exists in every 4 subcarriers.

4. Reference Signal (RS): according to the protocol of long term evolution LTE/NR, in the physical layer, uplink communication includes transmission of an uplink physical channel and an uplink signal. The uplink physical channel includes a random access channel (PRACH), an uplink control channel (PUCCH), an uplink data channel (PUSCH), and the like, and the uplink signal includes a Sounding Reference Signal (SRS), an uplink control channel demodulation reference signal (PUCCH-DMRS), an uplink data channel demodulation reference signal (PUSCH-DMRS), an uplink phase noise tracking signal (PTRS), an uplink positioning signal (uplink position RS), and the like.

The downlink communication includes transmission of a downlink physical channel and a downlink signal. The downlink physical channel includes a broadcast channel (PBCH), a downlink control channel (PDCCH), a downlink data channel (PDSCH), etc., and the downlink signal includes PSS, SSS, a downlink control channel demodulation reference signal PDCCH-DMRS, a downlink data channel demodulation reference signal PDSCH-DMRS, a phase noise tracking signal PTRS, a channel state information reference signal (CSI-RS), a Cell signal (CRS) (NR not), a fine synchronization signal (time/frequency tracking reference signal, TRS) (LTE not), an LTE/NR positioning signal (positioning RS), etc

5. Wave beam: the beam may be a wide beam, or a narrow beam, or other type of beam. The technique of forming the beam may be a beamforming technique or other technical means. The beamforming technique may be embodied as a digital beamforming technique, an analog beamforming technique, a hybrid digital/analog beamforming technique. Different beams may be considered different resources. The same information or different information may be transmitted through different beams. Alternatively, a plurality of beams having the same or similar communication characteristics may be regarded as one beam. One or more antenna ports may be included in a beam for transmitting data channels, control channels, sounding signals, and the like. For example, the transmission beam may refer to the distribution of signal strength formed in different spatial directions after the signal is transmitted through the antenna, and the reception beam may refer to the distribution of signal strength in different spatial directions of the wireless signal received from the antenna. It is to be understood that the one or more antenna ports forming one beam may also be seen as one set of antenna ports. The implementation of the beam in the communication protocol may also be a spatial filter.

The technical solution of the present application is described in detail below.

Referring to fig. 4, fig. 4 is a schematic flow chart of a method of signal transmission provided by the present application.

S401, the network equipment determines the composition mode of the first SSB.

It should be understood that there may be various combinations of SSs and PBCHs in the SSBs, and a network device may use one of the SSBs as a first SSB according to actual situations. For example: the network device may determine the composition of the first SSB based on the actual bandwidth of the operator.

Optionally, the SS and the PBCH constitute the SSB in a frequency division manner, or a time frequency division manner. The time division refers to both time division and frequency division in the composition manner of the SS and the PBCH, which will be illustrated in the following embodiments.

As an example, a broadband SSB is taken as an example for description, that is, a PBCH and an SS in the SSB adopt a frequency division or frequency division-based combination mode, and the SSB combination mode can improve the bandwidth of the SSB and reduce the number of symbols occupied by the SSB, thereby reducing the resource overhead of the system.

In the following, some composition modes of the broadband SSB are given. Referring to fig. 5, fig. 5 is a schematic diagram of the composition of three different wideband SSBs proposed in the present application.

(a) of fig. 5 is a schematic diagram of a possible implementation in which SSs occupy consecutive symbols, and SSBs of fig. a may occupy 1, or 2, or 3 symbols.

② fig. 5 (b) is a schematic diagram of a possible implementation manner that the SS does not occupy continuous symbols and part of PBCH is above or below the frequency of the SS, and it can be seen that the SSB of fig. b needs to occupy 3 symbols.

(c) of fig. 5 is a schematic diagram of a possible implementation manner in which an SS occupies consecutive symbols and a portion of PBCH is above or below the frequency of the SS, and it can be seen that the SSB of fig. c can occupy 1 or 2 symbols.

It should be understood that the composition of the broadband SSB is not limited to the three types illustrated above, and other types of compositions are possible, which are not illustrated in this application.

Alternatively, the SSs may occupy consecutive symbols (e.g., fig. 5 (a), fig. 5 (c)) or non-consecutive symbols (e.g., fig. 5 (b)).

It should be noted that, since the bandwidth allocation of the operator may be up or down with respect to the frequency point position of the SS, the frequency position of the PBCH with respect to the SS may be up or down.

Optionally, the frequency of all PBCH is above the frequency of the SS (e.g., operator 1 bandwidth in (a) of fig. 5) or the frequency of all PBCH is below the frequency of the SS (e.g., operator 2 bandwidth in (a) of fig. 5), or the frequency of partial PBCH may be above or below the frequency of the SS (e.g., fig. 5 (b), (c)).

Therefore, the composition mode of the broadband SSB reduces the number of symbols occupied by the existing SSB, reduces the system overhead, and can ensure compatibility with different frequency bands allocated by different operators.

In the above broadband SSB configuration, the PBCH is mainly located at a different frequency division position with respect to the SS. In practice, if the minimum bandwidth of the operator is less than the sum of the bandwidths of the SS and PBCH in the above embodiment, the bandwidth provided by the operator cannot transmit a complete SSB, so that the terminal device cannot access the SSB.

Therefore, if the requirement of minimum bandwidth of an operator is considered, the present application provides another SSB composition manner, that is, there is a possibility of time division between PBCH and SS, that is, it occupies multiple OFDM symbols, but the bandwidth occupied by SSB is narrow-band (compared with the corresponding bandwidth SSB in fig. 5). By taking the narrow-band SSB as an example, the PBCH and the SS adopt a time division or a combination of time division.

In the following, some of the ways in which the narrow-band SSB is composed are given. Referring to fig. 6, fig. 6 is a schematic diagram of the composition of six different narrow-band SSBs proposed in the present application.

It should be understood that the composition manner of the time division existence of the narrow-band SSB is not limited to the six types in fig. 6, and other types of composition manners are also possible, which is not illustrated in this application.

Alternatively, the SSs may occupy consecutive symbols (e.g., (a) - (c) of fig. 6).

Alternatively, the SSs may occupy non-consecutive symbols (e.g., (d) - (f) of fig. 6).

Alternatively, the entire SS and PBCH time division & frequency division (e.g., (b) and (e) of fig. 6), and part of the SS and PBCH time division & frequency division (e.g., (c) and (f) of fig. 6) may be performed.

It can be seen that to ensure a sufficiently small SSB bandwidth, the narrowband SSBs occupy more symbols than the wideband SSBs. For example: a wideband SSB occupying 1 symbol and a narrowband SSB occupying 2 symbols, a wideband SSB occupying 2 symbols and a narrowband SSB occupying 3 symbols, a wideband SSB occupying 3 symbols and a narrowband SSB occupying 4 symbols.

It should be understood that in order to meet the requirement of minimum bandwidth of the operator, in practical applications, the SSB sent by the network device may be composed in one or more ways, such as the broadband SSB composition shown in fig. 5, or in one or more ways, such as the narrowband SSB composition shown in fig. 6.

S402, the network equipment sends the first SSB and indicates part or all of the composition mode of the first SSB to the terminal equipment through the first information.

Correspondingly, the terminal device receives the first SSB sent by the network device.

The first information includes information of a part or all of the components of the first SSB, and several possible specific implementations of the first information will be specifically described in S403, which will not be described herein for the moment.

In the prior art, after receiving an SSB, a terminal device detects an SS in the SSB to implement time-frequency synchronization, obtain a cell ID, and further demodulate system information transmitted by a PBCH. Since the composition of the SSB is fixed, the terminal device may directly demodulate the system message transmitted in the PBCH according to the known composition of the SSB, and in the present application, since the composition of the SSB is variable, i.e., not unique, the terminal device needs to determine the composition of the SSB first after receiving the SSB.

S403, the terminal device determines the composition mode of the first SSB by blindly detecting the position of the PBCH in the first SSB and/or by detecting the first information.

By way of example and not limitation, the present application presents the following methods for determining the manner in which the first SSB is composed.

Optionally, the PBCH blind detection mode is as follows: when terminal equipment accesses a cell, the SS is detected, then according to the possible position of the PBCH, the specific position of the PBCH relative to the SS is determined by detecting a demodulation reference signal (DMRS) of the PBCH or detecting the transmission content of the PBCH, and system information transmitted by the PBCH is demodulated. This approach, while increasing the complexity of UE detection, does not require any additional information transmission.

Optionally, the network device carries the indication information through an SS (i.e., an example of the first information). For example, the network device indicates the sequence of the different SSs, and the terminal device determines all or part of the components of the first SSB according to the detected sequence of the SSs.

Optionally, the network device implicitly carries the indication information by the relative position of the PSS and the SSS (i.e. another example of the first information). The indication information is conveyed, for example, by PSS before SSS, or PSS after SSS. The terminal device detects the specific positions of the PSS and the SSS, so as to know all or part of the composition of the first SSB.

Optionally, the network device carries the indication information through a new Reference Signal (RS) (i.e. another example of the first information). E.g. by a different sequence carried by the RS. The terminal device detects the sequence of the RS, so as to know all or part of the composition of the first SSB. Further, the new RS may simultaneously transmit other information, such as the sequence number of the first SSB, etc.

Optionally, the network device provides a composition manner of the first SSB through a Subscriber Identity Module (SIM) card (i.e., another example of the first information) provided by the operator. And the terminal equipment acquires the first SSB by reading the information of the SIM card. Optionally, when the roaming switch of the terminal device is turned off, the terminal device obtains the composition mode of the first SSB in this way. When the roaming switch is turned on, the terminal device may perform the composition mode of acquiring the first SSB in the other modes. And under the condition of no other indication information notification, acquiring the composition mode of the SSB through the blind detection of the PBCH. Compared with a blind detection mode, the methods carrying the indication information reduce the complexity of UE detection under the condition of improving the system information transmission overhead.

Optionally, the terminal device may also determine the composition manner of the first SSB jointly through multiple manners in the foregoing manners, that is, each manner of the multiple manners may indicate partial information of the composition manner of the first SSB, and the terminal device determines the composition manner of the first SSB jointly through partial information provided by each manner of the multiple manners. For example, the network device indicates, through the indication information carried by the SS display, whether the first SSB is a wideband SSB or a narrowband SSB, and the terminal device further detects, through the blind detection of the PBCH, an explicit composition manner of the wideband SSB or the narrowband SSB.

Optionally, for the terminal device having accessed the cell, the measurement may also be performed on the neighboring cell, so that the network device may notify the terminal device of the SSB composition manner of the neighboring cell. For example: the network device may notify the terminal device through a system message, an RRC signaling, an MAC signaling, a Physical Downlink Control Channel (PDCCH), and the like.

Optionally, in order to reduce the complexity of terminal device detection, under the same-frequency measurement, the composition mode of the neighboring cell SSB is the same as the composition mode of the SSB of the resident cell (or serving cell) of the terminal device, so that the network device for the same-frequency measurement does not need to notify the composition mode of the SSB. Under the pilot frequency measurement, the terminal device measures at most N different composition modes, where N is a positive integer, and optionally, N may be reported as a capability, or a default value is fixed.

The above has described the signal transmission method provided in the present application in detail, and the communication apparatus provided in the present application is described below.

Referring to fig. 7, fig. 7 is a schematic block diagram of a communication device 1000 provided herein. As shown in fig. 7, the communication apparatus 1000 includes a transmitting unit 1100 and a processing unit 1200.

A sending unit 1100, configured to send a first synchronization information block SSB, where a composition manner of the first SSB is determined based on a first composition manner, and the first composition manner is one of multiple SSBs; a processing unit 1200, configured to indicate all or part of the composition manner of the first SSB to a terminal device through first information, where the first information includes information of the composition manner of the first SSB.

Optionally, in an embodiment, the processing unit 1200 determines a composition manner of the first SSB according to an actual bandwidth of an operator.

Optionally, in another embodiment, the first SSB includes a synchronization signal SS and a physical broadcast channel PBCH, and the SS and the PBCH constitute the first SSB in a frequency division manner, or a time division manner, wherein the SS occupies a continuous orthogonal frequency division multiplexing OFDM symbol, or the SS occupies a non-continuous OFDM symbol, and part or all of the PBCH is higher or lower than a frequency of the SS.

Optionally, in another embodiment, the first information includes the SS, and the processing unit 1200 is specifically configured to use the SS to carry first indication information, where the first indication information is a sequence of the SS, and the sequence of the SS corresponds to a composition manner of the first SSB.

Optionally, in another embodiment, the first information includes the RS, the sending unit 1100 is further configured to send a downlink reference signal RS to the terminal device, and the processing unit 1200 is specifically configured to carry second indication information by the RS, where the second indication information is a sequence of the downlink RS, where the sequence of the downlink RS corresponds to a composition manner of the first SSB.

Optionally, in another embodiment, the sending unit 1100 is further configured to send a second SSB to the terminal device, where the second SSB is an SSB of the second cell, the second cell is an adjacent cell of a first cell, and the first cell is a cell where the terminal device resides according to the first SSB.

Optionally, the communications apparatus 1000 may further include a receiving unit 1300 configured to perform the received action performed by the network device.

Alternatively, in each of the above implementations, the transmitting unit 1100 and the receiving unit 1300 may be integrated into one transmitting and receiving unit, and have functions of receiving and transmitting at the same time, which is not limited herein.

In one implementation, the communication apparatus 1000 may be a network device in the method embodiment, and in this implementation, the receiving unit 1300 may be a receiver and the sending unit 1100 may be a transmitter. The receiver and the transmitter may also be integrated into one transceiver. The processing unit 1200 may be a processing device.

In another implementation, the communication apparatus 1000 may be a chip or an integrated circuit installed in a network device. In this implementation, the transmitting unit 1100 and the receiving unit 1300 may be communication interfaces or interface circuits. For example, the receiving unit 1300 is an input interface or an input circuit, and the transmitting unit 1100 is an output interface or an output circuit. The processing unit 1200 may be a processing device.

The functions of the processing device may be implemented by hardware, or may be implemented by hardware executing corresponding software. For example, the processing means may comprise at least one processor and at least one memory, wherein the at least one memory is used for storing a computer program, and the at least one processor reads and executes the computer program stored in the at least one memory, so that the communication apparatus 1000 performs the operations and/or processes required to be performed by the network device in the method embodiments.

Alternatively, the processing means may comprise only the processor, the memory for storing the computer program being located outside the processing means. The processor is connected to the memory through the circuit/wire to read and execute the computer program stored in the memory. Also for example, the processing device may be a chip or an integrated circuit.

Referring to fig. 8, fig. 8 is a schematic block diagram of a communication device 2000 provided herein. As shown in fig. 8, the communication apparatus 2000 includes a receiving unit 2100 and a processing unit 2200.

A receiving unit 2100, configured to receive a first synchronization signal block SSB sent by a network device, where a composition manner of the first SSB is determined based on a first composition manner, the first composition manner is one of multiple SSBs, and the first SSB includes a synchronization signal SS and a physical broadcast channel PBCH; a processing unit 2200, configured to determine a composition of the first SSB by blindly detecting a location of the PBCH and/or by detecting first information, where the first information includes information of all or part of the composition of the first SSB.

Optionally, in an embodiment, the SS and the PBCH constitute the first SSB in a frequency division manner, or a time division manner, wherein the SS occupies a continuous orthogonal frequency division multiplexing OFDM symbol, or the SS occupies a discontinuous OFDM symbol, and part or all of the PBCH is higher or lower than a frequency of the SS.

Optionally, in another embodiment, the first information includes the SS; and the processing unit 2200 is specifically configured to detect first indication information carried by the SS, where the first indication information is a sequence of the SS, and the sequence of the SS corresponds to a composition manner of the first SSB; and determining the composition mode of the first SSB according to the first indication information.

Optionally, in another embodiment, the first information includes the RS, and the receiving unit 2100 is further configured to receive a downlink reference signal RS sent by the network device; the processing unit 2200 is specifically configured to detect second indication information carried by the downlink reference signal RS, where the second indication information is a sequence of the downlink RS, and the sequence of the downlink RS corresponds to a composition manner of the first SSB; and determining the composition mode of the first SSB according to the first indication information.

Optionally, in another embodiment, the first information includes a part or all of the components of the first SSB provided by an identity SIM card of the operator.

Optionally, in another embodiment, the processing unit 2200 is further configured to: camping on a first cell according to the first SSB; and measuring a second cell according to a second SSB, wherein the second cell is a neighboring cell of the first cell, and the second SSB is an SSB of the second cell.

Optionally, in another embodiment, before the processing unit 2200 measures the second cell according to the second SSB, when the measurement of the second cell is intra-frequency measurement, the processing unit 2200 is further configured to determine a second SSB composition mode, where the second SSB is the same as the first SSB; and/or when the measurement of the second cell is an inter-frequency measurement, the receiving unit 2100 is further configured to receive a composition manner of the second SSB sent by the network device.

Optionally, the communication apparatus 2000 may further comprise a transmitting unit 2300 for performing the act of transmitting performed by the terminal device.

Alternatively, in each of the above implementations, the receiving unit 2100 and the transmitting unit 2300 may be integrated into one transmitting/receiving unit, and have both functions of receiving and transmitting, which is not limited herein.

In one implementation, the communication apparatus 2000 may be a terminal device in the method embodiment. In this case, the receiving unit 2100 may be a receiver and the transmitting unit 2300 may be a transmitter. The receiver and the transmitter may also be integrated into one transceiver.

In another implementation, the communication device 2000 may be a chip or an integrated circuit in the terminal equipment. In this case, the receiving unit 2100 and the transmitting unit 2300 may be communication interfaces or interface circuits. For example, the receiving unit 2100 is an input interface or an input circuit, the transmitting unit 2300 is an output interface or an output circuit, and the processing unit 2200 may be a processing device.

The functions of the processing device may be implemented by hardware, or may be implemented by hardware executing corresponding software. For example, the processing device may include at least one processor and at least one memory, where the at least one memory is used to store a computer program, and the at least one processor reads and executes the computer program stored in the at least one memory, so that the communication device 2000 performs the operations and/or processes required to be performed by the terminal device in the method embodiments.

Alternatively, the processing means may comprise only the processor, the memory for storing the computer program being located outside the processing means. The processor is connected to the memory through the circuit/wire to read and execute the computer program stored in the memory. Another example is: the processing means may also be a chip or an integrated circuit.

Referring to fig. 9, fig. 9 is a schematic structural diagram of a communication device 10 provided in the present application. As shown in fig. 9, the communication apparatus 10 includes: one or more processors 11, one or more memories 12, and one or more communication interfaces 13. The processor 11 is configured to control the communication interface 13 to send and receive signals, the memory 12 is configured to store a computer program, and the processor 11 is configured to call and execute the computer program from the memory 12, so that the procedures and/or operations performed by the network device in the method embodiments of the present application are performed.

For example, the processor 11 may have the functions of the processing unit 1200 shown in fig. 7, and the communication interface 13 may have the functions of the receiving unit 1300 and/or the transmitting unit 1100 shown in fig. 7. In particular, the processor 11 may be configured to perform the processes or operations performed by the network device in the above method embodiments, and the communication interface 13 is configured to perform the actions of transmitting and/or receiving performed by the network device in the above method embodiments.

In one implementation, the communication apparatus 10 may be a network device in the method embodiment. The communication interface 13 in the communication device 10 may be a transceiver. The transceiver may include a receiver and a transmitter. Alternatively, the processor 11 may be a baseband device and the communication interface 13 may be a radio frequency device.

In another implementation, the communication device 10 may be a chip or an integrated circuit installed in a network device. In such an implementation, the communication interface 13 may be an interface circuit or an input/output interface.

Referring to fig. 10, fig. 10 is a schematic structural diagram of a communication device 20 provided in the present application. As shown in fig. 10, the communication device 20 includes: one or more processors 21, one or more memories 22, and one or more communication interfaces 23. The processor 21 is configured to control the communication interface 23 to send and receive signals, the memory 22 is configured to store a computer program, and the processor 21 is configured to call and execute the computer program from the memory 22, so that the procedures and/or operations performed by the terminal device in the method embodiments of the present application are performed.

For example, the processor 21 may have the functions of the processing unit 2200 shown in fig. 8, and the communication interface 23 may have the functions of the receiving unit 2100 and/or the transmitting unit 2300 shown in fig. 8. Specifically, the processor 21 may be configured to execute the processing or operations executed by the terminal device in the above method embodiments, and the communication interface 23 is configured to execute the actions of sending and/or receiving executed by the terminal device in the above method embodiments.

In one implementation, the communication device 20 may be a terminal device in the method embodiment. In such an implementation, the communication interface 23 may be a transceiver. The transceiver may include a receiver and a transmitter. Alternatively, the processor 21 may be a baseband device and the communication interface 23 may be a radio frequency device.

In another implementation, the communication device 20 may be a chip or an integrated circuit installed in the terminal equipment. In such an implementation, the communication interface 23 may be an interface circuit or an input/output interface.

Optionally, the memory and the processor in the foregoing device embodiments may be physically separate units, or the memory and the processor may be integrated together, which is not limited herein.

In addition, the present application also provides a computer-readable storage medium, in which computer instructions are stored, and when the computer instructions are executed on a computer, the operations and/or processes executed by the terminal device in the method embodiments of the present application are executed.

The present application further provides a computer-readable storage medium, which stores computer instructions for causing operations and/or processes performed by a network device in the method embodiments of the present application to be performed when the computer instructions are executed on a computer.

The present application also provides a computer program product, which includes computer program code or instructions to cause operations and/or processes performed by the terminal device in the method embodiments of the present application to be performed when the computer program code or instructions are run on a computer.

The present application also provides a computer program product including computer program code or instructions to cause operations and/or processes performed by the network device in the method embodiments of the present application to be performed when the computer program code or instructions are run on a computer.

In addition, the present application also provides a chip including a processor. A memory for storing the computer program is provided separately from the chip, and a processor is configured to execute the computer program stored in the memory, so that the operation and/or the process performed by the terminal device in any one of the method embodiments is performed.

Further, the chip may also include a communication interface. The communication interface may be an input/output interface, an interface circuit, or the like. Further, the chip may further include the memory.

The present application further provides a chip comprising a processor. A memory for storing the computer program is provided separately from the chip, and a processor is used for executing the computer program stored in the memory, so that the operations and/or processes performed by the network appliance in any one of the method embodiments are performed.

Further, the chip may also include a communication interface. The communication interface may be an input/output interface, an interface circuit, or the like. Further, the chip may further include the memory.

In addition, the present application also provides a communication system, which includes the terminal device and the network device in the embodiments of the present application.

The processor in the embodiments of the present application may be an integrated circuit chip having the capability of processing signals. In implementation, the steps of the above method embodiments may be performed by integrated logic circuits of hardware in a processor or instructions in the form of software. The processor may be a general purpose processor, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), a Field Programmable Gate Array (FPGA) or other programmable logic device, discrete gate or transistor logic, or discrete hardware components. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like. The steps of the method disclosed in the embodiments of the present application may be directly implemented by a hardware encoding processor, or implemented by a combination of hardware and software modules in the encoding processor. The software module may be located in ram, flash memory, rom, prom, or eprom, registers, etc. storage media as is well known in the art. The storage medium is located in a memory, and a processor reads information in the memory and completes the steps of the method in combination with hardware of the processor.

The memory in the embodiments of the present application may be either volatile memory or nonvolatile memory, or may include both volatile and nonvolatile memory. The non-volatile memory may be a read-only memory (ROM), a Programmable ROM (PROM), an Erasable PROM (EPROM), an electrically Erasable EPROM (EEPROM), or a flash memory. Volatile memory can be Random Access Memory (RAM), which acts as external cache memory. By way of example, but not limitation, many forms of RAM are available, such as Static Random Access Memory (SRAM), Dynamic Random Access Memory (DRAM), Synchronous Dynamic Random Access Memory (SDRAM), double data rate SDRAM, enhanced SDRAM, SLDRAM, Synchronous Link DRAM (SLDRAM), and Direct Rambus RAM (DRRAM). It should be noted that the memory of the systems and methods described herein is intended to comprise, without being limited to, these and any other suitable types of memory.

Those of ordinary skill in the art will appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the implementation. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present application.

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 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 above-described apparatus embodiments are merely illustrative, and for example, the division of the units is only one logical division, and other divisions may be realized 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. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.

The 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 addition, functional units in the embodiments of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit.

The term "and/or" in this application is only one kind of association relationship describing the associated object, and means that there may be three kinds of relationships, for example, a and/or B, which may mean: a exists alone, A and B exist simultaneously, and B exists alone. However, A, B and C are not limited to a single or plural number.

The functions, if implemented in the form of software functional units and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present application or portions thereof that substantially contribute to the prior art may be embodied in the form of a software product stored in a storage medium and including instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present application. And the aforementioned storage medium includes: various media capable of storing program codes, such as a U disk, a removable hard disk, a ROM, a RAM, a magnetic disk, or an optical disk.

The above description is only for the specific embodiments of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present application, and shall be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims (29)

1. A method of signal transmission, comprising:

the method comprises the steps that network equipment sends a first synchronization information block (SSB), wherein the composition mode of the first SSB is determined based on a first composition mode, and the first composition mode is one of multiple SSB composition modes;

and the network equipment sends first information to terminal equipment, wherein the first information comprises information of all or part of composition modes of the first SSB.

2. The method of claim 1, further comprising: and the network equipment determines the composition mode of the first SSB according to the actual bandwidth of an operator.

3. The method of claim 1 or 2, wherein the first SSB comprises a synchronization signal SS and a physical broadcast channel PBCH, and the SS and the PBCH constitute the first SSB in a frequency division multiplexing manner, a time division multiplexing manner or a time frequency division multiplexing manner, wherein the SS occupies continuous orthogonal frequency division multiplexing OFDM symbols, or the SS occupies discontinuous OFDM symbols, and part or all of the PBCH frequency is higher or lower than the SS frequency.

4. The method according to any of claims 1-3, wherein the first SSB comprises a Synchronization Signal (SS), the first information comprises the SS, and the network device indicates all or part of the components of the first SSB by the first information, comprising:

the network device indicates all or part of the composition of the first SSB through the sequence of SSs.

5. The method according to any of claims 1-4, wherein the first information comprises a downlink Reference Signal (RS), and the network device indicates all or part of the components of the first SSB through the first information, comprising:

and the network equipment indicates all or part of the composition mode of the first SSB through the sequence of the RS.

6. The method according to any one of claims 1-5, further comprising:

and the network device sends a second SSB to the terminal device, where the second SSB is an SSB of the second cell, the second cell is an adjacent cell of the first cell, and the first cell is a cell where the terminal device resides according to the first SSB.

7. A method of signal transmission, comprising:

the method comprises the steps that terminal equipment receives a first synchronous signal block SSB sent by network equipment, wherein the composition mode of the first SSB is determined based on a first composition mode, the first composition mode is one of multiple SSB composition modes, and the first SSB comprises a synchronous signal SS and a physical broadcast channel PBCH;

the terminal device determines the composition of the first SSB by blindly detecting the position of the PBCH and/or by detecting first information, where the first information includes information of all or part of the composition of the first SSB.

8. The method of claim 7, wherein the SS and the PBCH compose the first SSB in a frequency-division multiplexing manner, a time-division multiplexing manner, or a time-frequency-division multiplexing manner, wherein the SS occupies consecutive orthogonal frequency-division multiplexing (OFDM) symbols, or wherein the SS occupies non-consecutive OFDM symbols, and wherein part or all of the PBCH frequency is higher or lower than the SS frequency.

9. The method of claim 7 or 8, wherein the first information comprises the SS;

and the terminal equipment determines the composition mode of the first SSB by detecting the first information, and the method comprises the following steps:

and the terminal equipment determines all or part of the composition mode of the first SSB by detecting the sequence of the SS.

10. The method according to any of claims 7-9, wherein the first information comprises a downlink reference signal, RS, and wherein the method further comprises:

the terminal equipment receives the RS from the network equipment;

and the terminal equipment determines the composition mode of the first SSB by detecting the first information, and the method comprises the following steps:

and the terminal equipment determines all or part of the composition mode of the first SSB by detecting the sequence of the RS.

11. The method according to any of claims 7-10, wherein the first information comprises part or all of the composition of the first SSB provided by an identity SIM card of the operator.

12. The method according to any one of claims 7-11, further comprising:

the terminal equipment resides in a first cell according to the first SSB;

and the terminal equipment measures a second cell according to a second SSB, wherein the second cell is a neighboring cell of the first cell, and the second SSB is an SSB of the second cell.

13. The method of claim 12, wherein before the terminal device performs the measurement on the second cell according to the second SSB, the method further comprises:

when the measurement of the second cell is the same-frequency measurement, the terminal device determines a second SSB composition mode, wherein the second SSB is the same as the first SSB; and/or

And when the measurement of the second cell is pilot frequency measurement, the terminal device receives the composition mode of the second SSB sent by the network device.

14. A communications apparatus, comprising:

a sending unit, configured to send a first synchronization information block SSB, where a composition mode of the first SSB is determined based on a first composition mode, and the first composition mode is one of multiple SSBs;

the sending unit is configured to send first information to a terminal device, where the first information includes information of all or part of the composition modes of the first SSB.

15. The apparatus of claim 14, further comprising: and the processing unit is used for determining the composition mode of the first SSB according to the actual bandwidth of an operator.

16. The apparatus of claim 14 or 15, wherein the first SSB comprises a synchronization signal SS and a physical broadcast channel PBCH, and wherein the SS and the PBCH constitute the first SSB in a frequency division multiplexing manner, a time division multiplexing manner, or a time-frequency division multiplexing manner, wherein the SS occupies consecutive orthogonal frequency division multiplexing OFDM symbols, or the SS occupies non-consecutive OFDM symbols, and wherein the frequency of the PBCH is partially or completely higher or lower than the frequency of the SS.

17. The apparatus of any of claims 14-16, wherein the first information comprises the SS, and wherein a sequence of the SS is used to indicate a complete or partial composition of the first SSB.

18. The apparatus according to any of claims 14-17, wherein the first information comprises a downlink reference signal, RS, and wherein a sequence of the RS is used to indicate a whole or partial composition of the first SSB.

19. The apparatus according to any of claims 14-18, wherein the sending unit is further configured to send a second SSB to the terminal device, where the second SSB is an SSB of the second cell, the second cell is a neighboring cell of a first cell, and the first cell is a cell where the terminal device camps according to the first SSB.

20. A communications apparatus, comprising:

a receiving unit, configured to receive a first synchronization signal block SSB sent by a network device, where a composition manner of the first SSB is determined based on a first composition manner, the first composition manner is one of multiple SSBs, and the first SSB includes a synchronization signal SS and a physical broadcast channel PBCH;

a processing unit, configured to determine a composition of the first SSB by blindly detecting a location of the PBCH and/or by detecting first information, where the first information includes information of all or part of the composition of the first SSB.

21. The apparatus of claim 20, wherein the SS and the PBCH compose the first SSB in a frequency-division multiplexed manner, or a time-frequency-division multiplexed manner, wherein,

the SS occupies continuous Orthogonal Frequency Division Multiplexing (OFDM) symbols, or the SS occupies discontinuous OFDM symbols, and part or all of the frequencies of the PBCH are higher or lower than those of the SS.

22. The apparatus of claim 20 or 21, wherein the first information comprises the SS;

and the processing unit is specifically configured to determine all or part of the components of the first SSB by detecting the sequence of the SS.

23. The apparatus according to any of claims 20-22, wherein the first information includes the RS, and the receiving unit is further configured to receive a downlink reference signal, RS, sent by the network device;

and the processing unit is specifically configured to determine a partial or entire composition of the first SSB by detecting the sequence of the RS.

24. The apparatus according to any of claims 20-23, wherein the first information comprises part or all of the composition of the first SSB provided by an identity SIM card of the operator.

25. The apparatus according to any of claims 20-24, wherein the processing unit is further configured to:

camping on a first cell according to the first SSB;

and measuring a second cell according to a second SSB, wherein the second cell is a neighboring cell of the first cell, and the second SSB is an SSB of the second cell.

26. The apparatus of claim 25, wherein before the processing unit performs the measurement of the second cell according to the second SSB,

when the measurement of the second cell is an intra-frequency measurement, the processing unit is further configured to determine a second SSB composition mode, where the second SSB is the same as the first SSB; and/or

When the measurement of the second cell is pilot frequency measurement, the receiving unit is further configured to receive a composition mode of the second SSB sent by the network device.

27. A communications apparatus, comprising at least one processor coupled with at least one memory, the at least one processor being configured to execute a computer program or instructions stored in the at least one memory to cause the communications apparatus to perform the method of any of claims 1 to 6 or to cause the communications apparatus to perform the method of any of claims 7 to 13.

28. A computer-readable storage medium having stored thereon computer instructions for performing the method of any one of claims 1 to 6 or the method of any one of claims 7 to 13 when the computer instructions are run on a computer.

29. A computer program product, characterized in that it comprises computer program code which, when run on a computer, performs the method according to any one of claims 1 to 6, or performs the method according to any one of claims 7 to 13.

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