CN116406498A

CN116406498A - Communication method and device

Info

Publication number: CN116406498A
Application number: CN202080105521.7A
Authority: CN
Inventors: 曲韦霖; 罗之虎; 金哲
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2020-09-30
Filing date: 2020-09-30
Publication date: 2023-07-07
Also published as: WO2022067703A1

Abstract

The application discloses a communication method and device, wherein the method comprises the following steps: determining a first signal; wherein, the first signal includes a primary synchronization signal PSS, a secondary synchronization signal SSS and a physical broadcast channel PBCH; the PSS, SSS and PBCH are located in different symbols in the time domain; the SSS is adjacent to the PSS, or the SSS is spaced from the PSS in the time domain by at least 2 symbols; and transmitting the first signal.

Description

Communication method and device

Technical Field

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

Background

In the existing fifth generation mobile communication technology (the 5th generation,5G) New Radio (NR) system, a terminal device can achieve synchronization with a base station by receiving a synchronization signal and a PBCH block (synchronization signal and PBCH block, SSB), acquire a system message, and the like. Wherein the primary synchronization signal (primary synchronization signal, PSS), the secondary synchronization signal (secondary synchronization signal, SSS) and the physical broadcast channel (physical broadcast channel, PBCH) together form one SSB. As shown in fig. 1, in the time domain, 1 SSB occupies 4 orthogonal frequency division multiplexing (orthogonal frequency division multiplexing, OFDM) symbols (symbols), which are symbols 0 to 3, and in the frequency domain, 1 SSB occupies 20 Resource Blocks (RBs), that is, 240 subcarriers, and subcarrier numbers are 0 to 239 within the 20 RBs. The PSS is located on 127 subcarriers corresponding to symbol 0 and the SSS is located on 127 subcarriers corresponding to symbol 2.

At present, one SSB occupies 20 RBs in a frequency domain, the bandwidth occupied by the SSB is too large, and the SSB access of the narrowband terminal equipment cannot be compatible.

Disclosure of Invention

The application provides a communication method and a communication device, which are used for solving the problem that SSB in the prior art is not applicable to narrowband terminal equipment.

In a first aspect, the present application provides a communication method executable by a first communication device, e.g. the first communication device is a network apparatus. The first communication means may be a communication device or a communication means, such as a chip, capable of supporting the communication device to perform the functions required for the method. The method comprises the following steps: determining a first signal; wherein the first signal comprises PSS, SSS and PBCH; the PSS, SSS and PBCH are located in different symbols in the time domain; the SSS is adjacent to the PSS, or the SSS is spaced from the PSS in the time domain by at least 2 symbols; and transmitting the first signal.

By the method, in the first signal determined by the network device, the SSS is adjacent to the PSS, or the SSS and the PSS are separated by at least 2 symbols in the time domain, so that the narrowband terminal device can determine that the first signal is an SSB signal corresponding to the narrowband terminal device based on the relative positions of the SSS and the PSS in the first signal. And avoiding misaccess of the broadband terminal equipment and the non-narrowband terminal equipment in other NR systems caused by the fact that other non-narrowband terminal equipment in NR detects SSS of the first signal.

One possible implementation, the first signal includes 6 symbols in the time domain.

By the method, the PBCH in the SSB corresponding to the narrowband terminal equipment in the embodiment of the application can occupy enough symbols in the time domain, so that the narrowband terminal equipment in NR and the NR terminal equipment can be ensured to achieve the same coverage.

In a possible implementation, the PSS is located in the first symbol in the time domain, the SSS is located in the second symbol in the time domain, and the PBCH is located in the third to sixth symbols in the time domain.

By the method, the configuration of the PBCH is relatively uniform, so that the overall peak-to-average ratio of the SSB signal can be set to be more uniform. The requirement of the terminal equipment on detection of the SSB can be reduced, and the applicability of the SSB is improved.

In a possible implementation manner, the PSS is located in a first symbol in the time domain, the SSS is located in a fourth symbol in the time domain, and the PBCH is located in a second symbol, a third symbol, a fifth symbol and a sixth symbol in the time domain.

In a possible implementation manner, the PSS is located in a first symbol in the time domain, the SSS is located in a fifth symbol in the time domain, and the PBCH is located in a second symbol, a third symbol, a fourth symbol, and a sixth symbol in the time domain.

By the method, the flexibility of the design of the narrow-band SSB can be improved, so that the method is suitable for more application scenes of the narrow-band terminal equipment.

One possible implementation, the sequence of PSS is generated from a first sequence; the first sequence comprises a first shift value and a second shift value; wherein the first shift value is a positive integer less than 43; the second shift value is determined according to the number of the PSS, which is used to determine the cell identity.

The PSS signal in SSB in NR is distinguished by adding an additional first shift value in the PSS sequence. Therefore, when the NR terminal equipment blindly detects the PSS, the narrow-band PSS in the embodiment of the application can not be blindly detected. Correspondingly, the narrowband terminal equipment can determine that the SSB signal is SSB corresponding to the narrowband terminal equipment based on the blind detected narrowband PSS, so that false detection of the NR non-narrowband terminal equipment is further reduced, and power consumption of the NR non-narrowband terminal equipment is reduced.

A possible implementation manner, the sequence d of the PSS _k (n) satisfies:

d _k (n)＝1-2x(m)

wherein x (m) is a first sequence; mod represents a modulo operation; n is a positive integer less than 127; the K represents a first shift value;

The value range of (2) is {0,1,2}, said

A number indicating PSS; the second shift value is according to the

And (5) determining.

One possible implementation manner is that the frequency domain position occupied by the PBCH is the same as the frequency domain positions occupied by the PSS and the SSS; or, the frequency domain position occupied by the PBCH includes the frequency domain positions occupied by the PSS and the SSS.

Compared with the PBCH in the prior art, the method reduces the frequency domain bandwidth occupied by the PBCH of the first signal, and can be better suitable for the scenes of the narrowband terminal equipment and the narrowband Internet of things.

A possible implementation manner, the number of subcarriers occupied by the PBCH on the frequency domain is at least one of the following: 144 72, or 121.

In a second aspect, the present application provides a communication method executable by a second communication device. The second communication means may be a communication device or a communication means capable of supporting the functions required by the communication device to implement the method, e.g. a narrowband terminal device or a chip. For example, when the communication method is applied to a vehicle, the first communication device may be an in-vehicle apparatus, or a chip provided in the in-vehicle apparatus for realizing the function of the in-vehicle apparatus, or other means for realizing the function of the in-vehicle apparatus. It may also be a narrowband terminal device, or a chip provided in a narrowband terminal device for implementing the functions of the narrowband terminal device, or other means for implementing the functions of the narrowband terminal device.

The method comprises the following steps: receiving a first signal; wherein the first signal comprises PSS, SSS and PBCH; the PSS, SSS and PBCH are located in different symbols in the time domain; the SSS is adjacent to the PSS in the time domain, or the SSS is spaced from the PSS by at least 2 symbols in the time domain; and carrying out time-frequency synchronization and/or acquiring a system message according to the received first signal.

By the method, the narrowband terminal equipment can be enabled to determine that the first signal is an SSB signal corresponding to the narrowband terminal equipment based on the fact that the SSS in the first signal is adjacent to the PSS in the time domain, or the SSS and the PSS are separated by at least 2 symbols in the time domain, and further, time-frequency synchronization and/or system information acquisition are carried out through the first signal. And avoiding misaccess of the broadband terminal equipment and the non-narrowband terminal equipment in other NR systems caused by the fact that other non-narrowband terminal equipment in NR detects SSS of the first signal.

By the method, the PBCH in the SSB corresponding to the narrowband terminal equipment in the embodiment of the application can occupy enough time units, so that the narrowband terminal equipment in NR and the NR terminal equipment can be ensured to achieve the same coverage.

By the method, the first signal occupies more OFDM symbols in the time domain, and by expanding in the time domain, the NR terminal equipment and the NR terminal equipment in NR are ensured to achieve the same coverage, meanwhile, the NR terminal equipment is prevented from being accessed in error on the first signal, and the false detection of the NR non-narrowband terminal equipment to the SSS can be reduced, so that the power consumption of the non-narrowband terminal equipment is reduced.

One possible implementation, the sequence of PSS is generated from a first sequence; the first sequence comprises a first shift value and a second shift value; wherein the first shift value is a positive integer less than 43; the second shift value is determined according to the number of the PSS, which is used for determining the cell identity.

The PSS signal in SSB in NR is distinguished by adding an additional shift value in the PSS sequence. Therefore, when the NR terminal equipment blindly detects the PSS, the narrow-band PSS in the embodiment of the application can not be blindly detected. Correspondingly, the narrowband terminal equipment can determine that the SSB signal is SSB corresponding to the narrowband terminal equipment based on the blind detected narrowband PSS, so that false detection of the NR non-narrowband terminal equipment is further reduced, and power consumption of the NR non-narrowband terminal equipment is reduced.

A possible implementation manner, the sequence d of the PSS _k (n) satisfies:

d _k (n)＝1-2x(m)

wherein x (m) is the first sequence; mod represents a modulo operation; n is a positive integer less than 127; the K is the first shift value; the said

The value range of (2) is {0,1,2}, said

A number indicating PSS; the second shift value is according to

And (3) determining.

A possible implementation manner, the number of subcarriers occupied by the PBCH on the frequency domain is one of the following: 144 72, or 121.

In a third aspect, the present application provides a communication device, for example the first communication device as described above. The first communication device is configured to perform the method of the first aspect or any possible implementation manner. In particular, the first communication device may comprise means for performing the method of the first aspect or any of the possible embodiments, e.g. comprising a processing means and a transceiver means.

The transceiver module may include a transmitting module and a receiving module, which may be different functional modules or may be the same functional module, but may implement different functions (the transmitting module is used to implement a function of transmitting a signal, and the receiving module is used to implement a function of receiving a signal). The first communication means is, for example, a communication device or a chip or other component provided in a communication device. The communication device is illustratively a network device, or may be a chip or other component disposed in the network device. For example, the transceiver module may also be implemented by a transceiver, and the processing module may also be implemented by a processor. Alternatively, the transmitting module may be implemented by a transmitter, and the receiving module may be implemented by a receiver, and the transmitter and the receiver may be different functional modules, or may be the same functional module, but may implement different functions (the transmitter is used for implementing a function of transmitting a signal, and the receiver is used for implementing a function of receiving a signal). If the first communication means is a communication device, the transceiver is implemented, for example, by an antenna, a feeder, a codec, etc. in the communication device. Alternatively, if the first communication device is a chip provided in the communication apparatus, the transceiver (or the transmitter and the receiver) is, for example, a communication interface (or, in other words, an interface circuit) in the chip, and the communication interface is connected to a radio frequency transceiver component in the communication apparatus, so as to implement the transmission and reception of information through the radio frequency transceiver component. In the description of the third aspect, the description will be given by taking the processing module and the transceiver module as examples. Taking the communication device as the first communication device as an example, wherein,

A processing module for determining a first signal; wherein the first signal comprises PSS, SSS and PBCH; the PSS, SSS and PBCH are located in different symbols in the time domain; the SSS is adjacent to the PSS, or the SSS is spaced from the PSS in the time domain by at least 2 symbols;

and the receiving and transmitting module is used for transmitting the first signal.

In a fourth aspect, the present application provides a communication device, for example the second communication device as described above. The second communication device is adapted to perform the method of the second aspect or any of the possible embodiments described above. In particular, the second communication device may comprise means for performing the method of the second aspect or any of the possible embodiments, e.g. comprising a processing means and a transceiver means.

The transceiver module may include a transmitting module and a receiving module, which may be different functional modules or may be the same functional module, but may implement different functions (the transmitting module is used to implement a function of transmitting a signal, and the receiving module is used to implement a function of receiving a signal). The second communication means is, for example, a communication device or a chip or other component provided in a communication device. The communication device is illustratively a narrowband terminal device, or may be a chip or other component provided in the narrowband terminal device. For example, the transceiver module may also be implemented by a transceiver, and the processing module may also be implemented by a processor. Alternatively, the transmitting module may be implemented by a transmitter, and the receiving module may be implemented by a receiver, and the transmitter and the receiver may be different functional modules, or may be the same functional module, but may implement different functions (the transmitter is used for implementing a function of transmitting a signal, and the receiver is used for implementing a function of receiving a signal). If the first communication means is a communication device, the transceiver is implemented, for example, by an antenna, a feeder, a codec, etc. in the communication device. Alternatively, if the first communication device is a chip provided in the communication apparatus, the transceiver (or the transmitter and the receiver) is, for example, a communication interface (or, in other words, an interface circuit) in the chip, and the communication interface is connected to a radio frequency transceiver component in the communication apparatus, so as to implement the transmission and reception of information through the radio frequency transceiver component. In the description of the fourth aspect, the description will be given by taking the processing module and the transceiver module as examples. Take the communication device as a second communication device for example, wherein,

The receiving and transmitting module is used for receiving the first signal; wherein the first signal comprises PSS, SSS and PBCH; the PSS, SSS and PBCH are located in different symbols in the time domain; the SSS is adjacent to the PSS in the time domain, or the SSS is spaced from the PSS by at least 2 symbols in the time domain;

and the processing module is used for carrying out time-frequency synchronization and/or acquiring system messages according to the received first signal.

In a fifth aspect, there is provided a communication device, for example a first communication device as described above. The communication device includes a processor and a communication interface (or interface circuit) that may be used to communicate with other devices or apparatus. Optionally, a memory may be included for storing computer instructions. The processor and the memory are coupled to each other for implementing the method described in the first aspect or various possible embodiments. Alternatively, the first communication device may not include a memory, which may be external to the first communication device. The processor, the memory and the communication interface are coupled to each other for implementing the method described in the first aspect or various possible embodiments. For example, when the processor executes the computer instructions stored in the memory, the first communication device is caused to perform the method of the first aspect or any one of the possible implementation manners described above. The first communication means is, for example, a communication device or a chip or other component provided in a communication device. Illustratively, the communication device is a network device. For example, the first communication means may be an access network device, or may be a chip or other component provided in the access network device.

Wherein, if the first communication means is a communication device, the communication interface is for example realized by a transceiver (or a transmitter and a receiver) in said communication device, for example realized by an antenna, a feeder line, a codec, etc. in said communication device. Alternatively, if the first communication device is a chip provided in the communication apparatus, the communication interface is, for example, an input/output interface of the chip, such as an input/output pin or the like, and the communication interface is connected to a radio frequency transceiver component in the communication apparatus so as to implement the transmission and reception of information through the radio frequency transceiver component.

In a sixth aspect, there is provided a communication device, for example a second communication device as described above. The communication device includes a processor and a communication interface (or interface circuit) that may be used to communicate with other devices or apparatus. Optionally, a memory may be included for storing computer instructions. The processor and the memory are coupled to each other for implementing the method described in the second aspect or various possible embodiments. Alternatively, the second communication device may not include a memory, which may be external to the second communication device. The processor, memory and communication interface are coupled to each other for implementing the method described in the second aspect or various possible embodiments. For example, when the processor executes the computer instructions stored in the memory, the second communication device is caused to perform the method of the second aspect or any one of the possible embodiments described above. The second communication means is, for example, a communication device or a chip or other component provided in a communication device. The communication device is illustratively a narrowband terminal device, or an in-vehicle device, or the like. For example, the second communication means may be a narrowband terminal device, or may be a chip or other component provided in the narrowband terminal device.

Wherein if the second communication means is a communication device, the communication interface is for example realized by a transceiver (or a transmitter and a receiver) in said communication device, for example realized by an antenna, a feeder, a codec, etc. in said communication device. Alternatively, if the second communication device is a chip provided in the communication apparatus, the communication interface is, for example, an input/output interface of the chip, such as an input/output pin or the like, and the communication interface is connected to a radio frequency transceiver component in the communication apparatus to implement the transmission and reception of information through the radio frequency transceiver component.

In a seventh aspect, a chip is provided, the chip comprising a processor and a communication interface, the processor being coupled to the communication interface for implementing the method provided by the first aspect or any of the alternative embodiments described above.

Optionally, the chip may further comprise a memory, for example, the processor may read and execute a software program stored in the memory, to implement the method provided by the first aspect or any of the optional embodiments described above. Alternatively, the memory may be located outside the chip, rather than within the chip, and the processor may read and execute a software program stored in an external memory, so as to implement the method provided in the first aspect or any of the alternative embodiments.

In an eighth aspect, a chip is provided, the chip comprising a processor and a communication interface, the processor being coupled to the communication interface for implementing the method provided by the second aspect or any of the alternative embodiments described above.

Optionally, the chip may further comprise a memory, for example, the processor may read and execute a software program stored in the memory to implement the method provided by the second aspect or any optional embodiment described above. Alternatively, the memory may be located outside the chip, rather than within the chip, and the processor may read and execute a software program stored in an external memory, to implement the method provided in the second aspect or any of the alternative embodiments.

A ninth aspect provides a communication system comprising the communication device of the third aspect, the communication device of the fifth aspect or the communication device of the seventh aspect, and comprising the communication device of the fourth aspect, the communication device of the sixth aspect or the communication device of the eighth aspect.

In a tenth aspect, a computer readable storage medium is provided for storing a computer program which, when run on a computer, causes the computer to perform the method as described in the first aspect or any one of the possible implementations.

In an eleventh aspect, a computer readable storage medium is provided for storing a computer program which, when run on a computer, causes the computer to perform the method as described in the second aspect or any one of the possible embodiments.

In a twelfth aspect, there is provided a computer program product comprising instructions for storing a computer program for causing a computer to carry out the method of the first aspect or any one of the possible implementations thereof when the computer program is run on the computer.

In a thirteenth aspect, there is provided a computer program product comprising instructions for storing a computer program for causing a computer to carry out the method of the second aspect or any one of the possible implementations thereof when the computer program is run on the computer.

Drawings

FIG. 1 is a schematic diagram of a prior art SSB design;

fig. 2 is a schematic diagram of a communication system according to an embodiment of the present application;

fig. 3 is a schematic diagram of a communication system according to an embodiment of the present application;

FIG. 4 is a schematic diagram of a communication method according to an embodiment of the present disclosure;

FIGS. 5-7 are schematic diagrams of SSB designs provided in embodiments of the present application;

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

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

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

fig. 11 is a schematic diagram of a structure of a communication device according to an embodiment of the present application.

Detailed Description

Embodiments of the present application will be described in detail below with reference to the accompanying drawings.

The technical solution of the embodiment of the application can be applied to various communication systems, for example: long term evolution (long term evolution, LTE) systems, worldwide interoperability for microwave access (worldwide interoperability for microwave access, wiMAX) communication systems, future fifth generation (5th Generation,5G) systems such as new generation radio access technologies (new radio access technology, NR), and future communication systems such as 6G systems.

The technical scheme of the embodiment of the application can be applied to the technical fields of unmanned driving (unmanned driving), assisted driving (driver assistance, ADAS), intelligent driving (intelligent driving), internet driving (connected driving), intelligent internet driving (Intelligent network driving), car sharing (car sharing), intelligent cars (smart/intelligent car), digital cars (digital car), unmanned cars (unmanned car/driven car/pilot car/automatic), car networking (Internet of vehicles, ioV), automatic cars (self-driving car, automatic car), car road cooperation (cooperative vehicle infrastructure, CVIS), intelligent traffic (intelligent transport system, ITS), vehicle-mounted communication (vehicular communication) and the like.

In the following, some terms in the embodiments of the present application are explained for easy understanding by those skilled in the art.

1) Terminal devices, including devices that provide voice and/or data connectivity to a user, may include, for example, a handheld device having wireless connectivity, or a processing device connected to a wireless modem. The terminal device may communicate with the core network via a radio access network (radio access network, RAN), exchanging voice and/or data with the RAN. The terminal device may include a User Equipment (UE), a wireless terminal device, a mobile terminal device, a device-to-device (D2D) terminal device, a V2X terminal device, a machine-to-machine/machine-type communications, an M2M/MTC terminal device, an internet of things (internet of things, ioT) terminal device, a subscriber unit (subscriber unit), a subscriber station (subscriber station), a mobile station (mobile station), a remote station (remote station), an Access Point (AP), a remote terminal (remote terminal), an access terminal (access terminal), a user agent (user agent), or a user equipment (user device), etc. For example, mobile telephones (or "cellular" telephones) computers with mobile terminal devices, portable, pocket, hand-held, computer-built mobile devices, and the like may be included. Such as personal communication services (personal communication service, PCS) phones, cordless phones, session initiation protocol (session initiation protocol, SIP) phones, wireless local loop (wireless local loop, WLL) stations, personal digital assistants (personal digital assistant, PDAs), and the like. But also limited devices such as devices with lower power consumption, or devices with limited memory capabilities, or devices with limited computing capabilities, etc. Examples include bar codes, radio frequency identification (radio frequency identification, RFID), sensors, global positioning systems (global positioning system, GPS), laser scanners, and other information sensing devices.

By way of example, and not limitation, in embodiments of the present application, the terminal device may also be a wearable device. The wearable device can also be called as a wearable intelligent device or an intelligent wearable device, and is a generic name for intelligently designing daily wear and developing wearable devices, such as glasses, gloves, watches, clothes, shoes, and the like, by applying wearable technology. The 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 can realize a powerful function through software support, data interaction and cloud interaction. The generalized wearable intelligent device includes full functionality, large size, and may not rely on the smart phone to implement complete or partial functionality, such as: smart watches or smart glasses, etc., and focus on only certain types of application functions, and need to be used in combination with other devices, such as smart phones, for example, various smart bracelets, smart helmets, smart jewelry, etc. for physical sign monitoring.

While the various terminal devices described above, if located on a vehicle (e.g., placed in a vehicle or mounted in a vehicle), may be considered as in-vehicle terminal devices, for example, also referred to as in-vehicle units (OBUs).

In the embodiment of the application, the terminal device may further include a relay (relay). Or it is understood that all that is capable of data communication with a base station can be seen as a terminal device.

Embodiments of the present application may relate to two types of terminal devices: broadband terminal equipment and narrowband terminal equipment. The conditions that the broadband terminal device and the narrowband terminal device need to meet include, but are not limited to, the following:

(1) In the embodiment of the application, the maximum bandwidth capability of the narrowband terminal device is smaller than or equal to the minimum bandwidth capability of the wideband terminal device. Take the example that the narrowband terminal device is a narrowband internet of things (narrow band internet of things, NB-IoT) terminal device and the wideband terminal device is a long term evolution (long term evolution, LTE) terminal device. The data transmission bandwidth of the NB-IoT terminal device is 1 RB, i.e., 180kHz or 200kHz (including guard band), and since the PSS/SSS under the LTE system occupies 6 RBs, i.e., 1.08MHz or 1.44MHz (including guard band), the minimum bandwidth capability of the wideband terminal device may be considered to be not less than 1.08MHz, in which case the maximum bandwidth capability of the narrowband terminal device may be considered to be less than or equal to the minimum bandwidth capability of the wideband terminal device. For another example, the narrowband terminal device is an NB-IoT terminal device, the wideband terminal device is an NR terminal device, based on the design of the NR system SSB, the minimum bandwidth capability of the NR terminal device may be considered as 20 RBs, where each RB includes 12 subcarriers, in the NR system, the subcarrier spacing is related to the frequency band in which the NR system is deployed, and is not a fixed value, and taking the minimum subcarrier spacing of 15kHz as an example, the minimum bandwidth capability may be considered as greater than or equal to 20×12×15=3.6 MHz, and still the maximum bandwidth capability of the narrowband terminal device may be considered as less than or equal to the minimum bandwidth capability of the wideband terminal device.

(2) In the embodiment of the present application, the minimum bandwidth capability of the narrowband terminal device may also be considered to be smaller than the minimum bandwidth capability of the wideband terminal device. If a data transmission channel is established between the terminal device and the network device, in general, the terminal device needs to receive the synchronization channel and the broadcast channel sent by the network device first, so that the bandwidth corresponding to the synchronization channel and the broadcast channel sent by the network device can be considered as the minimum bandwidth capability required by the terminal device.

Based on (1) and (2), the narrowband terminal device may also be regarded as a bandwidth limited (bandwidth limited, BL) terminal device, and it should be noted that the BL terminal device may also have other bandwidth characteristics than (1) and (2), which are not particularly limited.

(3) In the embodiment of the present application, the narrowband terminal device may also consider that normal data communication with the network device is required to be maintained through coverage enhancement (coverage enhancement, CE) technology, whereas the wideband terminal device may maintain normal data communication with the network device even without CE technology. CE techniques include, but are not limited to, data retransmission or power boosting. Alternatively, if both the wideband terminal device and the narrowband terminal device need to maintain normal data communication with the network device through data retransmission in some scenarios, the narrowband terminal device may maintain data communication with the network device for a maximum number of repetitions that is less than the maximum number of repetitions required for the wideband terminal device to maintain data communication with the network device.

(4) In the embodiment of the present application, the narrowband terminal device may also be regarded as a low power wide coverage access (low power wide coverage access, LPWA) terminal device, and the wideband terminal device may be regarded as an enhanced mobile broadband (enhanced mobile broadband, eMBB) terminal device or an ultra-reliable low-latency communication (URLLC) terminal device.

In addition, in the embodiment of the present application, the same terminal device may have both narrowband and wideband capabilities, i.e., the terminal device may function as both a wideband terminal device and a narrowband terminal device, or, the terminal equipment has non-CE and CE capabilities, and can keep normal communication with the access network equipment without depending on the CE technology or with the access network equipment depending on the CE technology. Alternatively, it is possible that one terminal device only has narrowband capability and not wideband capability, then that terminal device is only narrowband terminal device and not wideband terminal device, etc., i.e. that terminal device can only rely on CE technology to maintain normal communication with the access network device. Both terminal devices can be applied to the technical scheme provided by the embodiment of the application.

2) A network device, for example comprising AN Access Network (AN) device, such as a base station (e.g. AN access point), may refer to a device in the access network that communicates over the air with a wireless terminal device through one or more cells, or a network device in a V2X technology is, for example, a Road Side Unit (RSU). The base station may be configured to inter-convert the received air frames with Internet Protocol (IP) packets as a router between the terminal device and the rest of the access network, which may include an IP network. The RSU may be a fixed infrastructure entity supporting V2X applications, which may exchange messages with other entities supporting V2X applications. The network device may also coordinate attribute management for the air interface. For example, the network device may include an evolved base station (NodeB or eNB or e-NodeB, evolutional Node B) in an LTE system or advanced long term evolution (long term evolution-advanced, LTE-a), or may also include a next generation NodeB (next generation node B, gNB) in a 5G NR system or may also include a Centralized Unit (CU) and a Distributed Unit (DU) in a Cloud access network (Cloud radio access network, cloud RAN) system, which embodiments of the present application are not limited.

3) In this embodiment of the present application, the cell mentioned may be a cell corresponding to a base station, where the cell may belong to a macro base station, or may belong to a base station corresponding to a small cell (small cell). The small cell here may include: urban cells (metro cells), micro cells (micro cells), pico cells (pico cells), femto cells (femto cells) and the like, and the small cells have the characteristics of small coverage area and low transmitting power and are suitable for providing high-rate data transmission services.

Multiple cells can work at the same frequency on a carrier in an LTE system or an NR system, and in some special scenarios, the carrier may be considered to be identical to the concept of a cell. For example, in the scenario of carrier aggregation (carrier aggregation, CA), when configuring a secondary carrier for a terminal device, the carrier index of the secondary carrier and the Cell identity (Cell ID) of a secondary Cell operating on the secondary carrier are carried at the same time, in which case the concept of the carrier and the Cell may be considered to be identical, for example, the terminal device accessing one carrier and accessing one Cell are identical. A similar description applies to the dual connection (dual connectivity, DC) scenario. The embodiments of the present application will be described in terms of cells. In an NR system, a cell may also be considered to be equivalent to BWP in the concept if there is only one active bandwidth part (BWP) on one cell or one carrier.

4) Air interface resources, in a cell, a base station and a UE can perform data transmission through air interface (user to Network interface UE, uu) resources. The air interface resources may include time domain resources and frequency domain resources, which may also be referred to as time-frequency resources. The frequency domain resource may be located in a set frequency range, which may also be referred to as a band (band) or a frequency band, and the width of the frequency domain resource may be referred to as a Bandwidth (BW).

5) The time-frequency resources, which may be a grid of resources, including time and frequency domains. For example, the time domain unit may be a symbol (symbol), and the frequency domain unit may be a subcarrier (subcarrier). The smallest resource unit in the resource grid may be referred to as a Resource Element (RE). One Resource Block (RB) may include one or more subcarriers in the frequency domain, for example, may be 12 subcarriers. One slot may include one or more symbols in the time domain, such as one slot in NR may include 14 symbols (in case of Cyclic Prefix (CP)) or 12 symbols (in case of extended cyclic prefix). The frequency domain resources are typically in units of orthogonal frequency division multiplexing multiple access (Orthogonal Frequency Division Multiple, OFDM) symbols, sub-slots (sub-slots), slots (slots), subframes (subframes), or frames (frames). It should be noted that, in the embodiments of the present application, the terms "time-frequency resource" and "resource" may be used interchangeably.

6) Time domain resources, including time units, which may be slots (slots), mini-slots (mini-slots), symbols (symbols) or other time domain granularity (e.g., system frames, subframes), where a slot may include at least one symbol, e.g., 14 symbols, or 12 symbols.

In 5G NR, one slot may be composed of at least one of a symbol used for downlink transmission, a symbol used for flexible transmission, a symbol used for uplink transmission, etc., so that the composition of slots is called different Slot Formats (SFs), and there may be 256 kinds of slot formats at most.

The time slots may have different slot types, and the number of symbols included in different slot types is different, for example, a mini slot (mini slot) contains less than 7 symbols, 2 symbols, 3 symbols, 4 symbols, etc., and a common slot (slot) contains 7 symbols or 14 symbols, etc. Each symbol length may be different according to subcarrier spacing, and thus the slot length may be different.

7) The frequency domain resource, since the single carrier bandwidth of the 5G NR can reach 400MHz, defines a bandwidth portion (BWP) in one carrier, which may also be referred to as a carrier bandwidth portion (carrier bandwidth part). BWP comprises a succession of resource elements in the frequency domain, such as Resource Blocks (RBs). The bandwidth portion may be a downstream or upstream bandwidth portion and the terminal device receives or transmits data on a data channel within the activated bandwidth portion. The frequency domain resources may include subchannels, frequency bands (bands), carriers, bandwidth parts (BWP), resource Blocks (RBs), resource Elements (REs), resource pools, or the like. Wherein, the RB occupies 1 subframe or 1 slot in the time domain and occupies a plurality of continuous subcarriers in the frequency domain. In LTE, PRBs occupy 14 consecutive orthogonal frequency division multiplexing (Orthogonal Frequency Division Multiplexing, OFDM) symbols in one subframe in the time domain, and 12 consecutive subcarriers in the frequency domain. A subchannel, which is the minimum unit of frequency domain resources occupied by a physical sidelink shared channel, may include one or more Resource Blocks (RBs). The bandwidth of the wireless communication system in the frequency domain may include a plurality of RBs, for example, among possible bandwidths of the LTE system, the included PRBs may be 6, 15, 25, 50, etc.

8) The sequence resource, also called code domain resource, is a related parameter for indicating the sequence. For random sequences, the parameters of the sequences comprise the initial position of the sequences, the length of the sequences and the initial value of the sequences; for low peak-to-average ratio sequences (e.g., ZC (zadoff-chu) sequences), parameters of the sequences include root sequence, mask, scrambling code, cyclic Shift (CS), or orthogonal cover code (orthogonal cover code, OCC), etc.

The initial value of a sequence refers to the initial value of a shift register that generates the sequence for a random sequence (e.g., gold sequence, m-sequence).

The initial position of the sequence and the random sequence used for transmission satisfy the following conditions: c (n) =c (n+a), n=0, 1,2, …, L-1, where c (n) is a random sequence used for transmission, a is an initial position of the random sequence, L is a length of the random sequence, and typically a is a non-negative integer, such as a is 0, or a is 2, etc.

For example, the sequence of synchronization signals may be generated as follows:

r _l (n)＝(1-2c(n))

wherein n=0, 1,2, …; r is (r) _l () A sequence representing a synchronization signal; c (n) is a random sequence, for example, a 31bit or 31bit shift register Gold sequence, or an m sequence.

9) The terms "system" and "network" in embodiments of the present application may be used interchangeably. "at least one" means one or more, and "a plurality" means two or more. "and/or", describes an association relationship of an association object, and indicates that there may be three relationships, for example, a and/or B, and may indicate: a alone, a and B together, and B alone, wherein a, B may be singular or plural. The character "/" generally indicates that the context-dependent object is an "or" relationship. "at least one of" or the like means any combination of these items, including any combination of single item(s) or plural items(s). For example, at least one (one) of a, b, or c may represent: a, b, c, a-b, a-c, b-c, or a-b-c, wherein a, b, c may be single or plural.

And, unless specified to the contrary, the embodiments of the present application refer to the ordinal terms "first," "second," etc., as used to distinguish between multiple objects, and are not to be construed as limiting the order, timing, priority, or importance of the multiple objects. For example, the first synchronization signal and the second synchronization signal are only for distinguishing between different synchronization signals, and are not indicative of the difference in content, priority, transmission order, importance, or the like of the two synchronization signals.

Having introduced some concepts to which embodiments of the present application relate above, features of embodiments of the present application are described below.

The 5G NR is a global 5G standard based on a brand new air interface design of OFDM, and is also a very important cellular mobile technology base of the next generation. The services of 5G technology are very diverse and may be directed to eMBB, URLLC, and large-scale machine-to-type communication (mctc).

The diversity of NR system services enables the design of NR system to meet the access requirements of terminal devices with different bandwidth capabilities. For example, the eMBB terminal device may access the NR system by acquiring wideband information of the NR system, while part of the mtc terminal device may access the NR system by acquiring narrowband information of the NR system due to design cost or low power consumption; for another example, even for the same service type, such as mctc, there are different service rate requirements, for example, for use cases such as ammeter reading, tracking and tracing or pay-as-needed, the terminal device has low requirements on the data transmission rate, but generally requires deep coverage, and generally can access through a narrowband; on the other hand, for example, the monitoring video back-pass and the like, the requirement on the data transmission rate is relatively high, so that the terminal device can be regarded as terminal equipment with medium-high end capability, and broadband access is generally available.

On the other hand, with the diversification of the NR system service, the capability of the terminal device under the NR system is diversified, and the terminal device can work under different system bandwidths.

In the existing NR system, a terminal device can achieve synchronization with a base station by receiving SSB, acquire a system message, and the like. Wherein, PSS, SSS and PBCH together form an SSB. As shown in fig. 1, 1 SSB occupies 4 OFDM symbols, which are symbols 0 to 3, in the time domain, and 1 SSB occupies 20 RBs, that is, 240 subcarriers, in the frequency domain, the subcarrier numbers are 0 to 239 within the 20 RBs. The PSS is located on the middle 127 subcarriers of symbol 0 and the SSS is located on the middle 127 subcarriers of symbol 2. Wherein the PSS and SSS signals occupy 1 symbol in time domain, and 12 RBs in frequency domain, including 128 subcarriers. As shown in fig. 1, wherein the first OFDM symbol from the left carries PSS, the subcarriers numbered 0,1, …,55, 183, 184, …,239 are set to 0, and the subcarriers numbered 56, 57, …,182 are the subcarriers occupied by PSS; the 2 nd and 4 th OFDM symbols from left bear PBCH, and one DMRS corresponding to PBCH is arranged in every 4 continuous subcarriers; the 3 rd OFDM symbol from the left carries SSS and PBCH, with the subcarriers numbered 56, 57, …,182 being SSS and the subcarriers numbered 0,1, …,47, 192, 193, …,239 being PBCH. In order to protect PSS and SSS, the energy of different guard sub-carriers is set to 0, that is, there are guard sub-carriers not used for carrying signals, and 8 sub-carriers and 9 sub-carriers are reserved on both sides of SSS as guard sub-carriers, respectively, such as the blank areas on the upper and lower sides of SSS in fig. 1 are guard sub-carriers. The PBCH occupies all the subcarriers of symbol 1 and symbol 3, and occupies a part of the remaining subcarriers (the subcarriers other than the guard subcarriers among the remaining subcarriers) among the all the subcarriers of symbol 2 except the subcarriers occupied by the SSS.

Future terminal devices will have a variety of bandwidth capabilities, such as narrowband and wideband capabilities, and will also face more varied application and business scenarios. Considering bandwidth limitation of a narrowband Internet of things terminal, the bandwidth occupied by a PBCH signal in an NR system SSB is too large for narrowband accessed Internet of things equipment, so that the SSB in the NR system does not meet the requirement of the access of the Internet of things equipment, the SSB of the narrowband Internet of things equipment cannot be compatible with the access of the NR system, and the current SSB cannot be detected for narrowband terminal equipment with the bandwidth smaller than 20 RB. Considering narrowband SSBs as common signals, the base station needs to transmit SSBs frequently (always), and thus, it is necessary to minimize the impact on the energy saving mechanism caused by the existing base station transmitting SSBs. In view of this, a technical solution of the embodiments of the present application is provided. The embodiments of the present application provide a new SSB, which is equivalent to that the signals can occupy multiple symbols to be transmitted in the time domain, and the embodiments of the present application restrict the frequency domain range of the SSB to be the same as PSS and SSS, and the PSS, the SSS and the PBCH are located in different symbols in the time domain; the SSS is adjacent to the PSS in the time domain, or the SSS is spaced from the PSS by at least 2 symbols in the time domain; the SSB provided by the embodiment of the application can meet the requirement of the coverage performance of the SSB of the narrowband terminal equipment, and can also avoid other terminal equipment in an NR system from falsely detecting the SSB of the narrowband terminal equipment, so that the performance of the SSB for the narrowband terminal equipment is improved, and meanwhile, the pertinence of the SSB is improved.

The technical scheme provided by the embodiment of the application can be used for wireless communication systems, including 4.5G or 5G wireless communication systems, further evolution systems based on LTE or NR, and future wireless communication systems.

The first application scenario of the embodiment of the present application may be a wireless communication system capable of simultaneously serving terminal devices with different bandwidth capabilities. For example, an LTE system or an NR system, which can serve an mMTC terminal device and an eMBB terminal device at the same time.

Referring to fig. 2, an exemplary architecture diagram of a communication system 100 according to one embodiment of the present application is shown. The method in the embodiment of the present application may be applied to the communication system 100 shown in fig. 2. The communication system 100 may be a PLMN network, a device-to-device (D2D) network, a machine-to-machine (machine to machine, M2M) network, an IoT network, or other network. In addition, the terminal devices 104 to 106 may constitute a communication system. The network architecture shown in fig. 2 is applicable to the first application scenario in the embodiment of the present application.

In the communication system 100 shown in fig. 2, a network device and terminal devices 101 to 106 constitute one communication system 100. In the communication system 100, the network device may transmit downlink data to the terminal devices 101 to 106, and of course, the terminal devices 101 to 106 may transmit uplink data to the network device. In the communication system, the terminal device 105 can transmit downlink data to the terminal device 104 or the terminal device 106.

The network device or terminal device in fig. 2 may be hardware, or may be functionally divided software, or a combination of both. The network devices or terminal devices in fig. 2 may communicate with each other via other devices or network elements.

The terminal device in fig. 2 may include two types of terminal devices, namely, a 1 st type terminal device and a 2 nd type terminal device 2, and both of these terminal devices may be connected to the network device, where the 1 st type terminal device is exemplified by a terminal device supporting wideband capabilities, for example, the 1 st type terminal device may be an existing NR terminal device of release 15, and the 2 nd type terminal device is exemplified by a terminal device supporting narrowband capabilities, for example, a future release narrowband mtc terminal device.

It should be understood that the number of terminal devices in fig. 2 is of course only an example, and that more or fewer network devices or terminal devices may be included in the communication system 100 to which the methods of embodiments of the present application may be applied. In practical applications, the network device may provide services for a plurality of terminal devices.

A second application scenario of the embodiments of the present application may be a wireless communication system that can only serve terminal devices with narrowband capabilities, such as an LTE system or an NR system that only serves NB-IoT terminal devices.

Referring to fig. 2, another network architecture applied in the embodiments of the present application is shown in fig. 3, which is suitable for the second application scenario in the embodiments of the present application.

In fig. 3, a network device and a terminal device are included, which may be connected to the network device, e.g. the terminal device is a terminal device supporting narrowband capabilities, e.g. an NB-IoT terminal device. Of course, the number of terminal devices in fig. 3 is merely an example, and in practical applications, the network device may serve multiple terminal devices.

The network device in fig. 2 or fig. 3 is for example an access network device, such as a base station. In which network devices correspond to different devices in different systems, e.g. in the fourth generation mobile communication technology (the 4) ^th generation, 4G) may correspond to enbs in a 5G system and network devices in 5G, such as a gNB.

The technical scheme provided by the embodiment of the application is described below with reference to the accompanying drawings.

An embodiment of the present application provides a communication method, please refer to fig. 4, which is a flowchart of the method. In the following description, this method is taken as an example applied to the network architecture shown in fig. 2 or fig. 3. In addition, the method may be performed by two communication devices, such as a first communication device and a second communication device. The first communication device may be a network device or a communication device capable of supporting a function required by the network device to implement the method, or the first communication device may be a terminal device or a communication device capable of supporting a function required by the terminal device to implement the method, and of course, may also be other communication devices, such as a chip system. The second communication means may be a network device or a communication means capable of supporting the network device to implement the functions required by the method, or the second communication means may be a terminal device or a communication means capable of supporting the terminal device to implement the functions required by the method, but may also be other communication means, such as a chip system. And the implementation manner of the first communication device and the second communication device is not limited, for example, the first communication device may be a network device, the second communication device is a terminal device, or the first communication device is a network device, the second communication device is a communication device capable of supporting a function required by the terminal device to implement the method, or the first communication device is a communication device capable of supporting a function required by the network device to implement the method, the second communication device is a communication device capable of supporting a function required by the terminal device to implement the method, and so on. Wherein the network device is, for example, a base station.

For ease of description, hereinafter, the method is performed by the network device and the terminal device, that is, the first communication apparatus is the network device and the second communication apparatus is the terminal device. If the present embodiment is applied to the network architecture shown in fig. 3, the network device described below may be the network device in the network architecture shown in fig. 3, the terminal device described below may be the terminal device 1 or the terminal device 2 in the network architecture shown in fig. 3, and if the present embodiment is applied to the network architecture shown in fig. 4, the network device described below may be the network device in the network architecture shown in fig. 4, and the terminal device described below may be the terminal device in the network architecture shown in fig. 4. It should be noted that the embodiments of the present application are only executed by the network device and the terminal device as examples, and are not limited to such a scenario, and may be executed by the terminal device and the terminal device, and if this is the case, the network device may be replaced by a first terminal device, and the terminal device may be replaced by a second terminal device, where the first terminal device may be a terminal device supporting both wideband and narrowband capabilities, or a terminal device supporting narrowband capabilities, and the second terminal device may be a terminal device supporting both wideband and narrowband capabilities, or a terminal device supporting narrowband capabilities.

S401, the network equipment determines a first signal.

In an embodiment of the present application, the first signal comprises an SSB. The SSB may include PSS, SSS and PBCH. It should be noted that, the PSS and the SSS may be referred to as a first SS and a second SS, respectively, and the embodiment of the present invention does not limit the names.

Wherein the PSS, SSS and PBCH are located in different symbols in the time domain; the SSS is adjacent to the PSS in the time domain, or the SSS is spaced from the PSS by at least 2 symbols in the time domain.

To avoid blind detection of SSBs for narrowband end devices by end devices in a wideband end device or other NR, e.g. a scheme of setting SSSs on the 3 rd symbol, either wideband end devices or end devices in other NR systems, PSS and SSSs may be received, resulting in unnecessary blind detection of non-narrowband end devices in wideband end devices and other NR systems, wasting resources of end devices. The application proposes the following possible implementation manner, so that SSB corresponding to the narrowband terminal equipment is prevented from being blindly detected by the non-narrowband terminal equipment, and the power consumption of the terminal equipment is reduced.

In one possible implementation, the different symbols located in the time domain where each of the SSBs is located may be configured by the network device, or specified by a protocol and stored in the network device and the terminal device, specifically without limitation.

One possible implementation manner is that the frequency domain position occupied by the PBCH is the same as the frequency domain positions occupied by the PSS and the SSS; or, the frequency domain position occupied by the PBCH includes the frequency domain position occupied by the PSS or the SSS. As shown in fig. 5, the number of subcarriers occupied by the first signal may be 144 subcarriers, 72 subcarriers or 121 subcarriers, which is not limited herein.

When the frequency domain position occupied by the PBCH is set to be the same as the frequency domain position occupied by the PSS and the SSS, compared with the setting mode of the PBCH in the SSB with wide frequency domain bandwidth in the prior art, the frequency domain bandwidth of the SSB is reduced. Therefore, to ensure coverage of the narrowband terminal device, in this embodiment of the present application, performance loss caused by bandwidth reduction may be compensated by expansion in the time domain, and in a possible implementation manner, the symbols of the SSB may be set to 6 symbols, for example, as shown in fig. 5, where one SSB includes 0-5 symbols. 1 symbol for PSS,1 symbol for SSS, and 4 symbols for PBCH.

In the embodiment of the present application, the number of subcarriers occupied by the first signal may be 144 subcarriers, 72 subcarriers or 121 subcarriers, which is not limited herein. For a communication system where one resource block RB comprises 12 subcarriers, 144 subcarriers may also be referred to as 12 resource blocks RB. The PSS, SSS and PBCH occupy 12 RBs per OFDM symbol, and the PSS, SSS and PBCH signals occupy 144 subcarriers in the frequency domain. The first signal may occupy 6 symbols, which are described in order of the symbols from small to large, and the 6 symbols may be a first symbol, a second symbol, a third symbol, a fourth symbol, a fifth symbol, and a sixth symbol, respectively.

As an implementation of SSB, reference is made to fig. 5, for example, which is an illustration of SSB. The SSS is separated from the PSS by 2 symbols in the time domain. The description is made in order of symbols from small to large, i.e., PSS is located in the first symbol in the time domain, SSS is located in the fourth symbol in the time domain, and PBCH is located in the second symbol, third symbol, fifth symbol, and sixth symbol in the time domain. For example, 6 OFDM symbols occupied by SSB time domain are #0 to # 5. The symbol #0 is a PSS signal, the symbol #3 is an SSS signal, and the symbol #1#2#4#5 is a PBCH signal.

It is understood that in the embodiment of the present application, X1 is located in the X2 symbol in the time domain, and may also be referred to as X1 carrying to the X2 symbol. For example, X1 may be PSS, SSS, PBCH. X2 may take a first symbol, a second symbol, a third symbol, a fourth symbol, etc. For example, PSS may be referred to as being carried on the first symbol in the time domain, SSS may be referred to as being carried on the fourth symbol in the time domain, PBCH may be referred to as being carried on the second symbol, etc.

As an implementation of SSB, reference is made to fig. 6, for example, which is an illustration of SSB. The PSS is located in the first symbol in the time domain, the SSS is located in the second symbol in the time domain, and the PBCH is located in the third to sixth symbols in the time domain, described in order of the symbols from small to large.

As an implementation of SSB, reference is made to fig. 7, for example, which is an illustration of SSB. The SSS is 3 symbols apart from the PSS. The PSS is located in a first symbol in the time domain, the SSS is located in a fifth symbol in the time domain, and the PBCH is located in a second symbol, a third symbol, a fourth symbol, and a sixth symbol in the time domain. For example, 6 OFDM symbols occupied by SSB time domain are #0 to # 5. The symbol #0 is a PSS signal, the symbol #4 is an SSS signal, and the symbol #1#2#3#5 is a PBCH signal.

By the method, the narrow-band SSB occupies more OFDM symbols in the time domain, performance loss caused by bandwidth reduction is compensated by expansion in the time domain, the low-cost Internet of things terminal UE and the NR UE in NR are guaranteed to achieve the same coverage, and in addition, compared with the scheme that SSS is arranged on the 3 rd symbol in the prior art, by adopting the scheme in the embodiment of the application, false detection of SSS by non-narrow-band terminal equipment can be reduced, so that power consumption of the non-narrow-band terminal equipment is reduced.

When the terminal equipment performs initial access, the terminal equipment is completely blind detection when detecting the PSS, the terminal equipment does not know the position of the PSS, and the detection is realized completely through blind detection. In the scheme, the non-narrowband terminal equipment can determine that the SSB is the SSB corresponding to the narrowband terminal equipment after the SSS is not detected, so that the false detection of the non-narrowband terminal equipment is further reduced, and the power consumption of the non-narrowband terminal equipment is reduced.

In the embodiment of the present application, a method for generating a sequence of PSS signals is further provided, where a shift value is additionally added to the PSS sequence to distinguish PSS signals in SSB in NR. Therefore, when the NR terminal equipment blindly detects the PSS, the narrow-band PSS in the embodiment of the application can not be blindly detected. Correspondingly, the narrowband terminal equipment can determine that the SSB signal is SSB corresponding to the narrowband terminal equipment based on the blind detected narrowband PSS, so that false detection of the NR non-narrowband terminal equipment is further reduced, and power consumption of the NR non-narrowband terminal equipment is reduced.

In one possible implementation, the sequence of the PSS signal (the first sequence) may be an m-sequence, and the m-sequence is hereinafter exemplified, and when the PSS signal is another sequence, reference may be made to this embodiment, which is not described herein.

For example, the sequence d of the PSS signal _k (n) The method meets the following conditions:

d _k (n)＝1-2x(m)

wherein the cyclic shift sequence x (i) satisfies:

x(i+7)＝(x(i+4)+x(i))mod 2

the initial values of x (i) satisfy:

[x(6)x(5)x(4)x(3)x(2)x(1)x(0)]＝[1 1 1 0 1 1 0]

in the embodiment of the present application, m satisfies:

0≤n＜127

wherein n is a positive integer less than 127; the first shift value K is a positive integer less than 43, and K may be a prime number. Second shift value

In (a) and (b)

An index number for indicating the PSS is used,

the value range is {0,1,2}. The terminal device may determine SSB block indexes (block indexes) together through different PSS sequences and SSS sequences and index numbers (indexes) transmitted in the PBCH, for identifying different SSBs.

The value of K may be determined by the network device or may be specified by a protocol.

Through the method, PSS signals in the narrow-band SSB are distinguished from PSS signals in the NR system SSB, so that the situation that the NR terminal sends the PSS signals in the narrow-band SSB through a network to be accessed by mistake is avoided, and the additional unnecessary power consumption caused by the false detection of the NR terminal is avoided.

S402, the network equipment sends a first signal.

Accordingly, the narrowband terminal device receives a first signal from the network device.

In S401, it is described that an SSB has an SSB time domain structure, and the terminal device needs to obtain the SSB time domain structure so as to detect the SSB. In addition, if the terminal equipment is initially accessed, the terminal equipment does not know the position of the SSB, so the terminal equipment can perform blind detection on the SSB; alternatively, for terminal devices in a connected state, the location of the SSB is generally known and can therefore be detected directly, i.e. received directly. Thus, in the embodiments of the present application, the terminal device "receiving" and the terminal device "detecting" may be regarded as the same procedure, that is, "receiving" and "detecting". Then, the terminal device detects SSB, there may be two consequences:

1. detecting (i.e., receiving) an SSB;

2. no SSB is detected (i.e., not received).

The relationship between these two results is "or".

In the embodiment of the present application, before or while the terminal device receives an SSB, the terminal device needs to acquire the SSB time-frequency structure, including but not limited to the following three ways:

in a first way, the SSB time domain structure is defined in advance by a standard, and the SSB time domain structure is preconfigured in the terminal device, or the terminal device stores the SSB time-frequency structure in advance. At this time, the terminal device determines the SSB time-frequency structure, specifically, the terminal device acquires the SSB time-domain structure preconfigured or stored in the terminal device;

In a second manner, the terminal device receives a first signaling, where the first signaling indicates the SSB time-frequency structure, and the first signaling is, for example, sent by the network device, and the terminal device can determine the SSB time-domain structure according to the first signaling. For example, the first signaling indicates the relative position of SSS and PSS. For example, the first signaling indicates that SSS is adjacent to PSS in the time domain. For example, the first signaling indicates one or more of the at least one SSB time domain structure introduced in embodiments of the present application. The first signaling is, for example, higher layer signaling, such as radio resource control (radio resource control, RRC) signaling or medium access control element (media access control control element, MAC CE), etc.; alternatively, the first signaling is, for example, physical layer signaling, such as downlink control information (downlink control information, DCI), or the like. The implementation of the first signaling is not limited.

In a third way, the terminal device may directly obtain the SSB time domain structure according to the narrowband capability. For example, a terminal device may access the system according to either broadband or narrowband capabilities. If the terminal equipment is in a scene of deep coverage or ultra-far coverage, the terminal equipment can acquire the SSB time domain structure according to the narrowband capability so as to improve the efficiency of the terminal equipment access system. For example, considering that the terminal device with supported bandwidth greater than or equal to 5MHz is a wideband terminal device, the terminal device may acquire SSB time domain structures according to narrowband capability if the supported bandwidth of the terminal device is greater than or equal to 5 MHz.

Wherein, the bandwidth occupied by the first signal (SSB) received by the terminal equipment on the frequency domain is equal to 12 RBs, and one RB occupies 12 subcarriers on the frequency domain. Thus, a narrowband terminal device (maximum bandwidth capability equal to 12 RBs) may normally receive the SSB.

S403, the terminal equipment performs time-frequency synchronization and/or acquires a system message according to the received first signal.

In particular, the terminal device may synchronize with the network device according to the at least one SSB, or acquire the system message according to the at least one SSB, or synchronize with the network device and acquire the system message according to the at least one SSB.

For example, when the SSB includes PSS, SSS, and PBCH, the terminal device may detect PSS first, then SSS, acquire time-frequency synchronization and/or identity number (ID) of the physical cell, and finally PBCH again to acquire the system message. The terminal device may then perform data transmission with the network device based on the time-frequency synchronization and the system message.

As described above, there may be multiple services, multiple scenarios, and multiple bandwidth capable terminal devices in the system. Thus, there may be URLLC, eMBB, and emtc traffic on one carrier, which may be used for narrowband terminal devices and wideband terminal devices to transmit data. By adopting the SSB provided by the embodiment of the application, convenience is provided for the service of the narrowband terminal equipment, and the false access of other NR non-narrowband terminal equipment is avoided.

The apparatus for implementing the above method in the embodiments of the present application is described below with reference to the accompanying drawings. Therefore, the above contents can be used in the following embodiments, and repeated contents are not repeated.

Fig. 8 is a schematic block diagram of a first communication device 800 provided in an embodiment of the present application.

The first communication device 800 includes a processing module 810 and a transceiver module 820. The first communication apparatus 800 may be an in-vehicle apparatus, or may be a chip applied to the in-vehicle apparatus or other combination device, component, or the like having the functions of the in-vehicle apparatus. When the first communication apparatus 800 is an in-vehicle device, the transceiver module 820 may be a transceiver, which may include an antenna, a radio frequency circuit, and the like, and the processing module 810 may be a processor, such as a baseband processor, which may include one or more central processing units (central processing unit, CPU) therein. When the first communication device 800 is a component having the above-described functions of the in-vehicle apparatus, the transceiver module 820 may be a radio frequency unit, and the processing module 810 may be a processor, for example, a baseband processor. When the first communication device 800 is a chip system, the transceiver module 820 may be an input/output interface of a chip (e.g., a baseband chip), and the processing module 810 may be a processor of the chip system and may include one or more central processing units. It is to be appreciated that the processing module 810 in embodiments of the present application may be implemented by a processor or processor-related circuit component, and the transceiver module 820 may be implemented by a transceiver or transceiver-related circuit component.

For example, the processing module 810 may be configured to perform all but the transceiving operations performed by the network device in the embodiment illustrated in fig. 4, e.g., step 201, step 203, step 501, step 503, e.g., encoding first data, encoding second data, etc., and/or other processes for supporting the techniques described herein. Transceiver module 820 may be used to perform all of the transceiving operations performed by the network device in the embodiment shown in fig. 4, and/or to support other processes of the techniques described herein.

In addition, the transceiver module 820 may be a functional module that can perform both a transmitting operation and a receiving operation, for example, the transceiver module 820 may be used to perform all the transmitting operation and the receiving operation performed by the network device in the embodiment shown in fig. 4, for example, the transceiver module 820 may be considered to be a transmitting module when performing the transmitting operation and the transceiver module 820 may be considered to be a receiving module when performing the receiving operation; alternatively, the transceiver module 820 may be two functional modules, where the transceiver module 820 may be regarded as a generic term of the two functional modules, and the two functional modules are respectively a transmitting module and a receiving module, where the transmitting module is used to perform a transmitting operation, for example, the transmitting module may be used to perform all transmitting operations performed by the network device in any of the embodiments shown in fig. 4, and the receiving module is used to perform a receiving operation, for example, the receiving module may be used to perform all receiving operations performed by the first network device in the embodiment shown in fig. 4.

Wherein the processing module 810 is configured to determine a first signal; wherein the first signal comprises PSS, SSS and PBCH; the PSS, SSS and PBCH are located in different symbols in the time domain; the SSS is adjacent to the PSS, or the SSS is spaced from the PSS in the time domain by at least 2 symbols; and a transceiver module 820 for transmitting the first signal.

A possible implementation manner, the sequence d of the PSS _k (n) satisfies:

d _k (n)＝1-2x(m)

The value range of (2) is {0,1,2}, said

A number indicating PSS; the second shift value is according to

And (3) determining.

When the communication device is a chip-type device or circuit, the device may include a transceiver module and a processing module. Wherein, the transceiver module can be an input-output circuit and/or a communication interface; the processing module is an integrated processor or microprocessor or integrated circuit.

For other functions that can be implemented by the first communication apparatus 800, reference may be made to the related description of the embodiment shown in fig. 4, which is not repeated.

Fig. 9 is a schematic block diagram of a second communication device 900 provided in an embodiment of the present application.

The second communication device 900 includes a processing module 910 and a transceiver module 920. The second communication device 900 may be a narrowband terminal device, or may be a chip applied in the narrowband terminal device or other combination device, component, etc. having the functions of the narrowband terminal device. When the second communication apparatus 900 is a narrowband terminal device, the transceiver module 920 may be a transceiver, which may include an antenna, a radio frequency circuit, and the like, and the processing module 910 may be a processor, for example, a baseband processor, where one or more CPUs may be included. When the second communication device 900 is a component having the function of the narrowband terminal device, the transceiver module 920 may be a radio frequency unit, and the processing module 910 may be a processor, for example, a baseband processor. When the second communication device 900 is a chip system, the transceiver module 920 may be an input/output interface of a chip (e.g., a baseband chip), and the processing module 910 may be a processor of the chip system, and may include one or more central processing units. It is to be appreciated that the processing module 910 in embodiments of the present application may be implemented by a processor or processor-related circuit component, and the transceiver module 920 may be implemented by a transceiver or transceiver-related circuit component.

For example, the processing module 910 may be configured to perform all but the transceiving operations performed by the narrowband terminal device in the embodiment shown in fig. 4, and/or to support other procedures of the techniques described herein. Transceiver module 920 may be used to perform all of the transceiving operations performed by the narrowband terminal device in the embodiment shown in fig. 4, and/or to support other processes for the techniques described herein.

In addition, with respect to the implementation of transceiver module 920, reference may be made to the description of the implementation of transceiver module 820.

The processing module 910 is configured to determine a first signal; wherein the first signal comprises PSS, SSS and PBCH; the PSS, SSS and PBCH are located in different symbols in the time domain; the SSS is adjacent to the PSS, or the SSS is spaced from the PSS in the time domain by at least 2 symbols; the first signal is transmitted through the transceiver module 920.

A possible implementation manner, the method further includes:

the sequence of the PSS is generated according to the first sequence; the first sequence comprises a first shift value and a second shift value;

wherein the first shift value is a positive integer less than 43; the second shift value is determined according to the number of the PSS, which is used to determine the cell identity.

A possible implementation manner, the sequence d of the PSS _k (n) satisfies:

d _k (n)＝1-2x(m)

the value range of (2) is {0,1,2}, said

A number indicating PSS; the second shift value is according to the

And (5) determining.

For other functions that can be implemented by the second communication device 900, reference may be made to the related description of the embodiment shown in fig. 4, which is not repeated.

The embodiment of the application also provides a communication device which can be network equipment or a circuit. The communication means may be adapted to perform the actions performed by the network device in the above-described method embodiments.

Based on the same concept as the above communication method, as shown in fig. 10, the embodiment of the present application further provides a communication apparatus 1000. The communication apparatus 1000 may be used to implement the method performed by the network device in the above method embodiment, and may be referred to as description in the above method embodiment, where the communication apparatus 1000 may be a network device, a terminal device, an in-vehicle device, or may be located in a network device, a terminal device, or an in-vehicle device, and may be an originating device or a receiving device.

The communications device 1000 includes one or more processors 1001. The processor 1001 may be a general purpose processor or a special purpose processor, or the like. For example, a baseband processor, or a central processing unit. The baseband processor may be used to process communication protocols and communication data, and the central processor may be used to control communication devices (e.g., network equipment, terminal equipment, vehicle-mounted equipment or chips, etc.), execute software programs, and process data of the software programs. The communication device 1000 may include a transceiver unit to implement input (reception) and output (transmission) of signals. For example, the transceiver unit may be a transceiver, a radio frequency chip, or the like.

The communications apparatus 1000 includes one or more processors 1001, and the one or more processors 1001 may implement the method performed by the network device in the embodiments shown above.

Alternatively, the processor 1001 may implement other functions in addition to the method in the above-described illustrated embodiment. Alternatively, in an implementation manner, the processor 1001 may execute a computer program, so that the communication apparatus 1000 performs a method performed by the network device in the above method embodiment. The computer program may be stored in whole or in part in the processor 1001, such as the computer program 1003, or in whole or in part in the memory 1002 coupled to the processor 1001, such as the computer program 1104, or the

computer programs

1003 and 1004 together may cause the communications apparatus 1000 to perform the method performed by the network device in the method embodiment described above.

For example, a processor 1001 for determining a first signal; wherein the first signal comprises PSS, SSS and PBCH; the PSS, SSS and PBCH are located in different symbols in the time domain; the SSS is adjacent to the PSS, or the SSS is spaced from the PSS in the time domain by at least 2 symbols; the first signal is transmitted by the transceiving unit 1005.

In yet another possible implementation manner, the communication apparatus 1000 may also include a circuit, where the circuit may implement the functions performed by the network device in the foregoing method embodiment.

In yet another possible implementation, the communication apparatus 1000 may include one or more memories 1002, on which a computer program 1004 is stored, which may be run on a processor, so that the communication apparatus 1000 performs the communication method described in the above method embodiments. Optionally, the memory may also have data stored therein. In the alternative, the processor may store a computer program and/or data. For example, the one or more memories 1002 may store the association or correspondence described in the above embodiment, or related parameters or tables or the like involved in the above embodiment. The processor and the memory may be provided separately, or may be integrated or coupled together.

In yet another possible implementation, the communication device 1000 may further include a transceiver unit 1005. The processor 1001 may be referred to as a processing unit, and controls a communication device (a first communication device or a second communication device). The transceiving unit 1005 may be referred to as a transceiver, transceiving circuit, transceiver, or the like, for implementing transceiving of data or control signaling.

For example, if the communication apparatus 1000 is a chip applied to a communication device or other combination device, component, or the like having the functions of the communication device described above, the communication apparatus 1000 may include the transceiver unit 1005 therein.

In yet another possible implementation, the communication device 1000 may further include a transceiver unit 1005 and an antenna 1006. The processor 1001 may be referred to as a processing unit, controlling the first communication means. The transceiver unit 1005 may be referred to as a transceiver, a transceiver circuit, or a transceiver, etc. for implementing the transceiver function of the device through the antenna 1006.

Based on the same concept as the communication method described above, as shown in fig. 11, the embodiment of the present application also provides a second communication apparatus 1100. The second communication apparatus 1100 may be used to implement the method performed by the narrowband terminal device in the above method embodiment, which may be referred to as description in the above method embodiment, where the second communication apparatus 1100 may be a narrowband terminal device, or may be located in a narrowband terminal device, and may be an originating device or a receiving device.

The second communication device 1100 includes one or more processors 1101. The processor 1101 may be a general purpose processor or a special purpose processor, or the like. For example, a baseband processor, or a central processing unit. The baseband processor may be used to process communication protocols and communication data, and the central processor may be used to control communication devices (e.g., network equipment, terminal equipment, vehicle-mounted equipment or chips, etc.), execute software programs, and process data of the software programs. The second communication device 1100 may include a transceiving unit to implement input (reception) and output (transmission) of a signal. For example, the transceiver unit may be a transceiver, a radio frequency chip, or the like.

The second communication device 1100 includes one or more processors 1101, and the one or more processors 1101 may implement the method performed by the narrowband terminal device in the embodiments shown above.

For example, the processor 1101 is configured to receive a first signal through the transceiver unit 1105; wherein the first signal comprises PSS, SSS and PBCH; the PSS, SSS and PBCH are located in different symbols in the time domain; the SSS is adjacent to the PSS in the time domain, or the SSS is spaced from the PSS by at least 2 symbols in the time domain; processor 1101 is configured to perform time-frequency synchronization and/or acquire a system message according to the received first signal.

Alternatively, the processor 1101 may implement other functions in addition to the methods in the embodiments shown above. Alternatively, in an implementation manner, the processor 1101 may execute a computer program, so that the second communication apparatus 1100 performs a method performed by the narrowband terminal device in the above-described method embodiment. The computer program may be stored in whole or in part in the processor 1101, such as the computer program 1103, or in whole or in part in a memory 1102 coupled to the processor 1101, such as the computer program 1104, or the

computer programs

1103 and 1104 may together cause the second communications apparatus 1100 to perform the method performed by the narrowband terminal device in the above method embodiment.

In yet another possible implementation manner, the second communication apparatus 1100 may also include a circuit, which may implement the functions performed by the narrowband terminal device in the foregoing method embodiment.

In yet another possible implementation, the second communication device 1100 may include one or more memories 1102, on which a computer program 1104 is stored, which may be run on a processor, so that the second communication device 1100 performs the communication methods described in the method embodiments above. Optionally, the memory may also have data stored therein. In the alternative, the processor may store a computer program and/or data. For example, the one or more memories 1102 may store associations or correspondence relationships described in the above embodiments, or related parameters or tables, etc. involved in the above embodiments. The processor and the memory may be provided separately, or may be integrated or coupled together.

In yet another possible implementation, the second communication device 1100 may further include a transceiver unit 1105. The processor 1101 may be referred to as a processing unit, controlling the second communication device. The transceiver unit 1105 may be referred to as a transceiver, a transceiver circuit, or a transceiver, etc. for implementing the transmission and reception of data or control signaling.

For example, if the second communication apparatus 1100 is a chip applied to a communication device or other combined device, component, or the like having the functions of the communication device, the second communication apparatus 1100 may include the transceiver unit 1105 therein.

In yet another possible implementation, the second communication device 1100 may further include a transceiver unit 1105 and an antenna 1106. The processor 1101 may be referred to as a processing unit, controlling the second communication device. The transceiver unit 1105 may be referred to as a transceiver, a transceiver circuit, a transceiver, or the like, for implementing a transceiver function of the apparatus through the antenna 1106.

It should be noted that the processor in the embodiments of the present application may be an integrated circuit chip with signal processing capability. In implementation, the steps of the above-described method embodiments may be implemented by integrated logic circuits of hardware in a processor or by a computer program in software form. The processor may be a general purpose processor, a digital signal processor (digital signal processor, DSP), an application specific integrated circuit (application specific integrated circuit, ASIC), an off-the-shelf programmable gate array (field programmable gate array, FPGA) or other programmable logic device, discrete gate or transistor logic device, discrete hardware components. The methods, steps and logic blocks disclosed in the embodiments of the present application may be implemented or performed. 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 connection with the embodiments of the present application may be directly embodied in a hardware decoding processor for execution, or may be performed by a combination of hardware and software modules in the decoding processor. The software modules may be located in a random access memory, flash memory, read only memory, programmable read only memory, or electrically erasable programmable memory, registers, etc. as well known in the art. The storage medium is located in a memory, and the processor reads the information in the memory and, in combination with its hardware, performs the steps of the above method.

It will be appreciated that the memory in embodiments of the present application may be either volatile memory or nonvolatile memory, or may include both volatile and nonvolatile memory. The nonvolatile 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. The volatile memory may be random access memory (random access memory, RAM) which acts as an external cache. By way of example, and not limitation, many forms of RAM are available, such as Static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double data rate SDRAM (DDR SDRAM), enhanced SDRAM (ESDRAM), synchronous DRAM (SLDRAM), and direct memory bus RAM (DR RAM). 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.

The present application further provides a computer readable storage medium, on which a computer program is stored, which when executed by a computer implements the method of any of the method embodiments described above applied to a network device or a narrowband terminal device.

The present application also provides a computer program product which, when executed by a computer, implements the method of any of the method embodiments described above as applied to a network device or a narrowband terminal device.

In the above embodiments, it may be implemented in whole or in part 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 comprises one or more computer programs. When the computer program is loaded and executed on a computer, the processes or functions described in accordance with the embodiments of the present application are all or partially produced. The computer may be a general purpose computer, a special purpose computer, a computer network, or other programmable apparatus. The computer program may be stored in or transmitted from one computer readable storage medium to another, for example, a website, computer, server, or data center via a wired (e.g., coaxial cable, fiber optic, digital subscriber line (digital subscriber line, DSL)) or wireless (e.g., infrared, wireless, microwave, etc.) means. Computer readable storage media can be any available media that can be accessed by a computer or data storage devices, such as servers, data centers, etc., that contain an integration of one or more available media. The usable medium may be a magnetic medium (e.g., a floppy disk, a hard disk, a magnetic tape), an optical medium (e.g., a high-density digital video disc (digital video disc, DVD)), or a semiconductor medium (e.g., a Solid State Disk (SSD)), or the like.

The embodiment of the application also provides a communication device, which comprises a processor and an interface; a processor, configured to perform the method according to any of the method embodiments applied to the network device or the narrowband terminal device.

It should be understood that the processing device may be a chip, and the processor may be implemented by hardware or software, and when implemented by hardware, the processor may be a logic circuit, an integrated circuit, or the like; when implemented in software, the processor may be a general-purpose processor, implemented by reading software code stored in a memory, which may be integrated in the processor or located outside the processor, and which may exist separately.

The embodiment of the application provides a communication system. The communication system may comprise a network device or a narrowband terminal device as referred to in the above-described embodiment shown in fig. 4.

The embodiment of the application further provides a computer readable storage medium, where a computer program is stored, where the computer program when executed by a computer may implement the flow related to the network device or the narrowband terminal device in the embodiment shown in fig. 4 provided by the foregoing method embodiment.

The embodiment of the application further provides a computer program product, which is used for storing a computer program, and when the computer program is executed by a computer, the computer can implement the flow related to the network device and the narrowband terminal device in the embodiment shown in fig. 4 provided by the embodiment of the method.

It should be appreciated that the processors referred to in the embodiments of the present application may be CPUs, but may also be other general purpose processors, digital signal processors (digital signal processor, DSPs), application specific integrated circuits (application specific integrated circuit, ASICs), off-the-shelf programmable gate arrays (field programmable gate array, FPGAs) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like.

It should also be understood that the memory referred to in the embodiments of the present application may be volatile memory or nonvolatile memory, or may include both volatile and nonvolatile memory. The nonvolatile 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. The volatile memory may be random access memory (random access memory, RAM) which acts as an external cache. By way of example, and not limitation, many forms of RAM are available, such as Static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double data rate SDRAM (DDR SDRAM), enhanced SDRAM (ESDRAM), synchronous DRAM (SLDRAM), and direct memory bus RAM (DR RAM).

Note that when the processor is a general-purpose processor, DSP, ASIC, FPGA or other programmable logic device, discrete gate or transistor logic device, discrete hardware components, the memory (storage module) is integrated into the processor.

It should be noted that the memory described herein is intended to comprise, without being limited to, these and any other suitable types of memory.

It should be understood that, in various embodiments of the present application, the sequence numbers of the foregoing processes do not mean the order of execution, and the order of execution of the processes should be determined by the functions and internal logic thereof, and should not constitute any limitation on the implementation process of the embodiments of the present application.

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 solution. 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 will be clear to those skilled in the art that, for convenience and brevity of description, specific working procedures of the above-described systems, apparatuses and units may refer to corresponding procedures in the foregoing method embodiments, and are not repeated herein.

In the several embodiments provided in this application, it should be understood that the disclosed systems, devices, and methods may be implemented in other manners. For example, the apparatus embodiments described above are merely illustrative, e.g., the division of the units is merely a logical function division, and there may be additional divisions when actually implemented, e.g., multiple units or components may be combined or integrated into another system, or some features may be omitted or not performed. Alternatively, the coupling or direct coupling or communication connection shown or discussed with each other may be an indirect coupling or communication connection via some interfaces, devices or units, which may be in electrical, mechanical or other form.

The units described as separate units may or may not be physically separate, and units shown 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 may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

In addition, each functional unit in each embodiment of the present application may be integrated in one processing unit, or each unit may exist alone physically, or two or more units may be integrated in one unit.

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 may be embodied essentially or in a part contributing to the prior art or in a part of the technical solution, in the form of a software product stored in a storage medium, including several instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the methods described in the embodiments of the present application. The foregoing computer-readable storage media can be any available media that can be accessed by a computer. Taking this as an example but not limited to: the computer readable medium may include random access memory (random access memory, RAM), read-only memory (ROM), electrically erasable programmable read-only memory (electrically erasable programmable read only memory, EEPROM), compact disk read-only memory (CD-ROM), universal serial bus flash disk (universal serial bus flash disk), removable hard disk, or other optical disk storage, magnetic disk storage media or other magnetic storage devices, or any other medium that can be used to carry or store desired program code in the form of instructions or data structures and that can be accessed by a computer.

The foregoing is merely specific embodiments of the present application, but the scope of the embodiments of the present application is not limited thereto, and any person skilled in the art may easily think about changes or substitutions within the technical scope of the embodiments of the present application, and the changes or substitutions are intended to be covered by the scope of the embodiments of the present application. Therefore, the protection scope of the embodiments of the present application shall be subject to the protection scope of the claims.

Claims

A method of communication, comprising:

determining a first signal;

wherein, the first signal includes a primary synchronization signal PSS, a secondary synchronization signal SSS and a physical broadcast channel PBCH;

the PSS, SSS and PBCH are located in different symbols in the time domain; the SSS is adjacent to the PSS, or the SSS is spaced from the PSS in the time domain by at least 2 symbols;

and transmitting the first signal.
The method of claim 1, wherein the first signal comprises 6 symbols in the time domain.
The method of claim 1 or 2, wherein,

the PSS is located in a first symbol in the time domain, the SSS is located in a second symbol in the time domain, and the PBCH is located in third to sixth symbols in the time domain.
The method of claim 1 or 2, wherein,

the PSS is located in a first symbol in the time domain, the SSS is located in a fourth symbol in the time domain, and the PBCH is located in a second symbol, a third symbol, a fifth symbol, and a sixth symbol in the time domain.
The method of claim 1 or 2, wherein,

the PSS is located in a first symbol in the time domain, the SSS is located in a fifth symbol in the time domain, and the PBCH is located in a second symbol, a third symbol, a fourth symbol, and a sixth symbol in the time domain.
The method of any one of claims 1-5, wherein the method further comprises:

the sequence of the PSS is generated according to the first sequence; the first sequence comprises a first shift value and a second shift value;

wherein the first shift value is a positive integer less than 43; the second shift value is determined according to the number of the PSS, which is used to determine the cell identity.
The method of claim 6, wherein the sequence d of PSS _k (n) satisfies:

d _k (n)＝1-2x(m)

wherein x (m) is a first sequence; mod represents a modulo operation; n is a positive integer less than 127; the K represents a first shift value;
The value range of (2) is {0,1,2}, said
A number indicating PSS; the second shift value is according to the
And (5) determining.
The method of any one of claim 1 to 7,

the frequency domain position occupied by the PBCH is the same as the frequency domain position occupied by the PSS and the SSS; or,

the frequency domain positions occupied by the PBCH comprise the frequency domain positions occupied by the PSS and the SSS.
The method of any of claims 1-8, wherein the number of subcarriers occupied by the PBCH in the frequency domain is at least one of: 144 72, or 121.
A method of communication, comprising:

receiving a first signal;

wherein, the first signal includes a primary synchronization signal PSS, a secondary synchronization signal SSS and a physical broadcast channel PBCH;

the PSS, SSS and PBCH are located in different symbols in the time domain; the SSS is adjacent to the PSS in the time domain, or the SSS is spaced from the PSS by at least 2 symbols in the time domain;

and carrying out time-frequency synchronization and/or acquiring a system message according to the received first signal.
The method of claim 10, wherein the first signal comprises 6 symbols in the time domain.
The method of claim 10 or 11, wherein,

the PSS is located in a first symbol in the time domain, the SSS is located in a second symbol in the time domain, and the PBCH is located in third to sixth symbols in the time domain.
The method of claim 10 or 11, wherein,

the PSS is located in a first symbol in the time domain, the SSS is located in a fourth symbol in the time domain, and the PBCH is located in a second symbol, a third symbol, a fifth symbol, and a sixth symbol in the time domain.
The method of claim 10 or 11, wherein,

the PSS is located in a first symbol in the time domain, the SSS is located in a fifth symbol in the time domain, and the PBCH is located in a second symbol, a third symbol, a fourth symbol, and a sixth symbol in the time domain.
The method of any one of claims 10-14, wherein the method further comprises:

the sequence of the PSS is generated according to the first sequence; the first sequence comprises a first shift value and a second shift value;

wherein the first shift value is a positive integer less than 43; the second shift value is determined according to the number of the PSS, which is used for determining the cell identity.
The method of claim 15, wherein the sequence d of PSS _k (n) satisfies:

d _k (n)＝1-2x(m)

wherein x (m) is the first sequence; mod represents a modulo operation; n is a positive integer less than 127; the K is the first shift value; the said
The value range of (2) is {0,1,2}, said
A number indicating PSS; the second shift value is according to
And (3) determining.
The method according to any of claims 10-16, wherein the frequency domain position occupied by the PBCH is the same as the frequency domain position occupied by the PSS, SSS; or,

the frequency domain positions occupied by the PBCH comprise the frequency domain positions occupied by the PSS and the SSS.
The method of any of claims 10-16, wherein the number of subcarriers occupied by the PBCH in the frequency domain is one of: 144 72, or 121.
A communication device comprising a processing module and a transceiver module, wherein the processing module is coupled to the transceiver module for performing the method of any of claims 1-9.
A communication device comprising a processing module and a transceiver module, wherein the processing module is coupled to the transceiver module for performing the method of any of claims 10-18.
A computer readable storage medium for storing a computer program which, when run on a computer, causes the computer to perform the method of any one of claims 1 to 9 or causes the computer to perform the method of any one of claims 10 to 18.
A computer program product comprising computer program instructions which, when run on a processor, cause the method of any one of claims 1 to 18 to be performed.
A communication system comprising a communication device according to claim 19 and comprising a communication device according to claim 20.
A chip comprising a processor and a communication interface, the processor being configured to read instructions through the communication interface to perform the method of any one of claims 1 to 9 or to perform the method of any one of claims 10 to 18.