JP7307227B2 - Wireless communication method, network device and terminal device - Google Patents

Description

The present application relates to the field of communication, and more particularly to wireless communication methods, network devices and terminal devices.

Currently, in the Long Term Evolution (LTE) system, signals for synchronization are a Primary Synchronization Signal (PSS) and a Secondary Synchronization Signal (SSS). The reference signal for (Radio Resource Management, RRM) measurements is a Cell Reference Signal (CRS) or a Channel State Information Reference Signal (CSI-RS).

In the New Radio (NR) system, a network device can transmit multiple synchronization signal blocks (SS blocks) to a terminal device, and the terminal device searches for the SS block within the system bandwidth to obtain a cell identifier. (Identifier, ID) to perform time-frequency synchronization, to obtain Physical Broadcasting Channel (PBCH) information, and RRM based on SSS and PBCH Demodulation Reference Signal (DMRS) measurements can be made.

In the new wireless system, the requirements for communication performance are high, so how to improve the communication performance in terms of SS Block transmission becomes a problem that needs to be solved as soon as possible.

Embodiments of the present application provide a wireless communication method and apparatus, which can improve communication characteristics in terms of SS Block transmission.

A wireless communication method related to the first aspect,
A network device occupies a first bandwidth in N first codes and transmits a first channel or signal included in a synchronization signal block to a terminal device, N being an integer greater than or equal to 1; occupies the second bandwidth in the M second codes, and occupies the third bandwidth in the S first codes of the N first codes, and the terminal device is provided with the synchronization signal block transmitting the included second channel or signal, wherein the frequency domain resource locations of the first bandwidth and the third bandwidth are non-overlapping, and M and S are integers greater than or equal to 1;

Therefore, embodiments of the present application can transmit the second channel or signal in the code that transmits the first channel or signal, and can reduce the overall bandwidth occupied by the synchronization signal block, thereby allowing the initial search While reducing the number of times, there is no need to significantly reduce the transmission resources of the second channel or signal, so reducing the bandwidth of the synchronization signal block reduces the impact on the second channel or signal transmission characteristics or can be avoided, thereby improving communication characteristics.

Referring to the first aspect, a possible implementation of the first aspect is that the first channel or signal includes a primary synchronization signal (PSS) and/or a secondary synchronization signal (SSS).

Referring to the first aspect or any of the above possible implementations, in another possible implementation of the first aspect, the first channel or signal includes PSS and SSS, and the first code occupied by PSS and SSS is different.

Referring to the first aspect or any of the above possible implementations, in another possible implementation of the first aspect, the second channel or signal comprises a Physical Broadcast Channel (PBCH).

Refer to the first aspect or any of the above possible implementations, in another possible implementation of the first aspect, the sum of the bandwidths of the first bandwidth and the third bandwidth is less than or equal to the second bandwidth .

Referring to the first aspect or any of the above possible implementations, another possible implementation of the first aspect is the frequency domain resource location occupied by the first bandwidth and the frequency domain resource occupied by the third bandwidth. Each location is a subset of the frequency domain resource locations occupied by the second bandwidth.

Referring to the first aspect or any of the above possible implementations, another possible implementation of the first aspect is that the center frequency point of the first bandwidth is equal to the center frequency point of the second bandwidth.

Referring to the first aspect or any of the above possible implementations, another possible implementation of the first aspect is that the frequency domain resource location of the third bandwidth is on both sides of the frequency domain resource location of the first bandwidth. To position.

Refer to the first aspect or any of the above possible implementations, another possible implementation of the first aspect is that the frequency domain resource location of the first bandwidth is located within the low frequency range of the second bandwidth. , and the frequency domain resource location of the third bandwidth is located within the high frequency range of the second bandwidth.

Refer to the first aspect or any of the above possible implementations, another possible implementation of the first aspect is that the frequency domain resource location of the first bandwidth is located within the high frequency range of the second bandwidth. , and the frequency domain resource location of the third bandwidth is located within the low frequency range of the second bandwidth.

With reference to the first aspect or any of the above possible implementations, in another possible implementation of the first aspect, the first bandwidth, the second bandwidth and/or the third bandwidth each consist of an integer number of physical Equal to the bandwidth occupied by a resource block (PRB).

Referring to the first aspect or any of the above possible implementations, in another possible implementation of the first aspect, the second bandwidth is less than the bandwidth occupied by 24 PRBs.

Referring to the first aspect or any of the above possible implementations, in another possible implementation of the first aspect, the second bandwidth is equal to the bandwidth occupied by 18 PRBs.

Referring to the first aspect or any of the above possible implementations, in another possible implementation of the first aspect, the first bandwidth is equal to the bandwidth occupied by 12 PRBs.

Referring to the first aspect or any of the above possible implementations, another possible implementation of the first aspect is that S is equal to N.

Referring to the first aspect or any of the above possible realizations, another possible realization of the first aspect is N equals 2, M equals 2,
The order of the N first codes and the M second codes in the time domain is first code, second code, first code and second code.

Referring to the first aspect or any of the above possible implementations, another possible implementation of the first aspect is that the network device occupies the second bandwidth in M second codes, and N Occupying the third bandwidth and transmitting the second channel or signal contained in the synchronization signal block to the terminal device in the S first codes among the first codes of
The network device starts with the first code among the N first codes and M second codes, then N first codes and M second codes according to the method of first frequency domain and then time domain. According to the order in the time domain, the second channel or signal is mapped so that the low frequency domain resource is first and the high frequency domain resource is second, and the bandwidth mapped in the first code is the third bandwidth and that the bandwidth mapped in the second code is the second bandwidth;
the network device transmitting the mapped second channel or signal to the terminal device.

A wireless communication method related to the second aspect,
The terminal device receives the synchronization signal block transmitted by the network device on the M second codes from the second bandwidth and on the S first codes of the N first codes from the third bandwidth. obtaining a second channel or signal contained in
in the N first codes, the network device transmitting a first channel or signal included in the synchronization signal block at a first bandwidth;
frequency domain resource locations of the third bandwidth and the first bandwidth are non-overlapping, and the M, the N and the S are integers greater than or equal to 1;

Therefore, embodiments of the present application can transmit the second channel or signal in the code that transmits the first channel or signal, and can reduce the overall bandwidth occupied by the synchronization signal block, thereby allowing the initial search While reducing the number of times, there is no need to significantly reduce the transmission resources of the second channel or signal, so reducing the bandwidth of the synchronization signal block reduces the impact on the second channel or signal transmission characteristics or can be avoided, thereby improving communication characteristics.

Referring to the second aspect, in a possible implementation of the second aspect, the first channel or signal includes a primary synchronization signal (PSS) and/or a secondary synchronization signal (SSS).

Referring to the second aspect or any of the above possible implementations, in another possible implementation of the second aspect, the first channel or signal includes PSS and SSS, and the first code occupied by PSS and SSS is different.

Referring to the second aspect or any of the above possible implementations, in another possible implementation of the second aspect, the second channel or signal comprises a physical broadcast channel (PBCH).

Refer to the second aspect or any of the above possible implementations, in another possible implementation of the second aspect, the sum of the bandwidths of the first bandwidth and the third bandwidth is less than or equal to the second bandwidth .

Referring to the second aspect or any of the above possible implementations, another possible implementation of the second aspect is the frequency domain resource location occupied by the first bandwidth and the frequency domain resource occupied by the third bandwidth. Each location is a subset of the frequency domain resource locations occupied by the second bandwidth.

Referring to the second aspect or any of the above possible implementations, in another possible implementation of the second aspect, the center frequency point of the first bandwidth is equal to the center frequency point of the second bandwidth.

Refer to the second aspect or any of the above possible implementations, in another possible implementation of the second aspect, the frequency domain resource location of the third bandwidth is on both sides of the frequency domain resource location of the first bandwidth To position.

Refer to the second aspect or any of the above possible implementations, in another possible implementation of the second aspect, the frequency domain resource location of the first bandwidth is located within the low frequency range of the second bandwidth. , and the frequency domain resource location of the third bandwidth is located within the high frequency range of the second bandwidth.

Refer to the second aspect or any of the above possible implementations, in another possible implementation of the second aspect, the frequency domain resource location of the first bandwidth is located within the high frequency range of the second bandwidth. , and the frequency domain resource location of the third bandwidth is located within the low frequency range of the second bandwidth.

Referring to the second aspect or any of the above possible implementations, in another possible implementation of the second aspect, the first bandwidth, the second bandwidth and/or the third bandwidth each comprise an integer number of physical Equal to the bandwidth occupied by a resource block (PRB).

Referring to the second aspect or any of the above possible implementations, in another possible implementation of the second aspect, the second bandwidth is less than the bandwidth occupied by 24 PRBs.

Referring to the second aspect or any of the above possible implementations, in another possible implementation of the second aspect, the second bandwidth is equal to the bandwidth occupied by 18 physical resource blocks (PRBs).

Referring to the second aspect or any of the above possible implementations, in another possible implementation of the second aspect, the first bandwidth is equal to the bandwidth occupied by 12 PRBs.

Refer to the second aspect or any of the above possible realizations, in another possible realization of the second aspect, S is equal to N.

With reference to the second aspect or any of the above possible realizations, another possible realization of the second aspect is N equals 2, M equals 2,
The order of the N first codes and the M second codes in the time domain is first code, second code, first code and second code.

Referring to the second aspect or any of the above possible implementations, in another possible implementation of the second aspect, the terminal device receives, on the M second codes, from the second bandwidth and on the N obtaining a second channel or signal contained in a synchronization signal block transmitted by a network device from a third bandwidth, at the S first codes of the code,
Starting from the first code among N first codes and M second codes, N first codes and M second codes based on the terminal device destination frequency domain then time domain scheme. The second channel or signal is demapped so that the low frequency domain resource is first and the high frequency domain resource is second according to the order in the time domain, and the bandwidth demapped in the first code is the third band. width, including that the bandwidth demapped in the second code is the second bandwidth.

A network device according to the third aspect, adapted to perform the method in the first aspect or any possible implementation of the first aspect. Specifically, the network device includes functional modules for performing the method in the first aspect or any possible implementation of the first aspect.

A terminal device according to the fourth aspect, configured to perform the method in the second aspect or any possible implementation of the second aspect. Specifically, the terminal device includes functional modules used in the method in the second aspect or any possible implementation of the second aspect.

A network device related to the fifth aspect, including a processor, a memory and a transceiver. Interconnection paths between the processor, the memory and the transceiver communicate with each other and transmit control and/or data signals so that the network device can communicate with the first party or any possible first party. Execute the method in the implementation.

A terminal device related to the sixth aspect, including a processor, a memory and a transceiver. The processor, the memory and the transceiver communicate with each other through an internal connection path to transmit control and/or data signals so that the terminal device can operate in the second direction or in any possible second direction. Execute the method in the implementation.

A computer-readable medium according to the seventh aspect, configured to store a computer program, said computer program being used to perform any of the above methods or containing commands in any possible manner of implementation. .

A computer program product containing commands relating to the eighth aspect which, when executed on a computer, causes the computer to perform any of the above methods or methods in any possible implementation.

FIG. 1 is a schematic diagram of a wireless communication system according to an embodiment of the present application.

FIG. 2 is a schematic flow chart of a wireless communication method according to an embodiment of the present application.

FIG. 3 is a schematic diagram of a transmission method of a sync signal block according to an embodiment of the present application.

FIG. 4 is a schematic diagram of a transmission method of a sync signal block according to an embodiment of the present application.

FIG. 5 is a schematic diagram of a transmission method of a synchronization signal block according to an embodiment of the present application.

FIG. 6 is a schematic diagram of a transmission method of a synchronization signal block according to an embodiment of the present application.

FIG. 7 is a schematic diagram of a transmission system of a synchronization signal block.

FIG. 8 is a schematic block diagram of a network device according to an embodiment of the present application.

FIG. 9 is a schematic block diagram of a terminal device according to an embodiment of the present application.

FIG. 10 is a schematic block diagram of a system chip according to an embodiment of the present application.

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

The following describes the technical solutions in the embodiments of the present application with reference to the drawings in the embodiments of the present application, and it is clear that the described embodiments are part of the embodiments of the present application, not all the embodiments. . Any other embodiments that a person skilled in the art can conceive without creative effort based on the embodiments in the present application belong to the technical scope of the present application.

The technical solutions of the embodiments of the present application can be applied to various communication systems, such as Global System of Mobile communication (abbreviated as "GSM") system, Code Division Multiple Access (abbreviated as "CDMA") system. , Wideband Code Division Multiple Access (abbreviated as “WCDMA”) system, General Packet Radio Service (abbreviated as “GPRS”), Long Term Evolution (abbreviated as “LTE”) abbreviation) system, LTE Frequency Division Duplex (abbreviated as “FDD”) system, LTE Time Division Duplex (abbreviated as “TDD”), Universal Mobile Telecommunication System, abbreviated as “UMTS”), Wide Interoperability for Microwave Access (abbreviated as “WiMAX”) communication system, 5G system, and the like.

FIG. 1 shows a wireless communication system 100 to which embodiments of the present application apply. The wireless communication system 100 may include network equipment 110 . The network device 100 may be a device that communicates with terminal devices. Network device 100 may provide communication coverage for a particular geographical area and communicate with terminal equipment (eg, UEs) located within the coverage area. Preferably, the network device 100 can be a base station (Base Transceiver Station, BTS) in a GSM system or a CDMA system, a base station (NodeB, NB) in a WCDMA system, or an evolved version in an LTE system. It may be a base station (Evolutional Node B, eNB or eNodeB), or a radio controller in a Cloud Radio Access Network (CRAN), or the network device may be a relay station, an access point, an in-vehicle device, It may be a wearable device, a network-side device in a 5G network, or a network device in a future developing public land mobile network (PLMN).

The wireless communication system 100 further includes at least one terminal equipment 120 located within the coverage area of the network equipment 110 . Terminal 120 may be mobile or stationary. Terminal equipment 120 preferably refers to an access terminal, User Equipment (UE), subscriber unit, subscriber station, mobile station, mobile, remote station, remote terminal, mobile device, user terminal, terminal, wireless communication device. , may refer to a user agent or user device. The access terminal may be a mobile phone, cordless phone, Session Initiation Protocol (SIP) phone, Wireless Local Loop (WLL) station, Personal Digital Assistant (PDA), handheld with wireless communication capabilities. It may be a device, a computing device or other processing device connected to a wireless modem, an in-vehicle device, a wearable device, a terminal device in a 5G network or a terminal device in a future developing PLMN, and so on.

Preferably, terminal direct communication (Device to Device, D2D) can be performed between the terminal devices 120 .

Preferably, the 5G system or network may also be referred to as a New Radio (NR) system or network.

FIG. 1 exemplarily shows a network device and two terminal devices, preferably the wireless communication system 100 may include a plurality of network devices, and another number of terminal devices within the coverage area of each network device. may include, and embodiments of the present application do not limit this.

Preferably, the wireless communication system 100 may further include other network entities such as network controllers, mobility management entities, etc., and embodiments herein do not limit this.

In this text, it should be understood that often the terms "system" and "network" are used interchangeably herein. In the text, the terminology "and/or" simply describes the relationship of related objects and indicates that there can be three relationships, e.g., A and/or B means that only A exists; Three situations can be shown: the simultaneous presence of B and the presence of B alone. Also, in the text, the character "/" generally indicates that the related objects before and after it have an "or" relationship.

FIG. 2 is a schematic flow chart of a wireless communication method 200 according to an embodiment of the present application. Preferably, the method 200 is applied to the system shown in FIG. 1, but is not limited thereto. The method 200 includes at least some of the following.

At 210, the network device occupies a first bandwidth and transmits a first channel or signal included in the synchronization signal block to the terminal device at N first codes, where N is an integer greater than or equal to one.

Preferably, when N is greater than 1, the N first codes may be consecutive N codes or non-consecutive N codes.

Preferably, said first channel or signal comprises PSS and/or SSS.

Preferably, the first channel or signal includes a PSS and an SSS, the PSS and the SSS differing in the first code they occupy.

For example, the first channel or signal includes a primary synchronization signal and a secondary synchronization signal, N equals 2, one code is used to transmit the primary synchronization signal, and another code is used to transmit the secondary synchronization signal. In particular, the code dedicated to transmitting the primary synchronization signal and the code dedicated to transmitting the secondary synchronization signal may be spaced by one code.

Preferably, the frequency domain resources occupied by the first bandwidth may be continuous frequency domain resources or discontinuous frequency domain resources.

Preferably, the first channel or signal refers to the channel or signal occupying the first bandwidth in the first code, and may include channels or signals with the same bandwidth characteristics, or include certain types of channels or signals. , the classification granularity can be determined according to the specific situation, and the embodiments of the present application do not limit it, for example, the first channel or signal is the synchronization signal, or the first channel or signal is the primary synchronization signal signal or secondary synchronization signal.

Preferably, when N is greater than 1, the width and/or resource location of the first bandwidth occupied for transmitting the first channel or signal in each first code is first in at least one other first code. The bandwidth width and/or resource location occupied for transmitting the channel or signal may differ.

For example, the first channel or signal includes a primary synchronization signal and a secondary synchronization signal, N equals 2, one code is used to transmit the primary synchronization signal, and another code is used to transmit the secondary synchronization signal. especially, the bandwidth and/or resource location occupied for transmitting the primary synchronization signal is different from the bandwidth and/or resource location occupied for transmitting the secondary synchronization signal.

Of course, the width and/or resource locations of the first bandwidth occupied for transmitting the first channel or signal in the N codes may be the same.

For example, the first channel or signal includes a primary synchronization signal and a secondary synchronization signal, N equals 2, one code is used to transmit the primary synchronization signal, and another code is used to transmit the secondary synchronization signal. In particular, the bandwidth and/or resource location occupied for transmitting the primary synchronization signal is equal to the bandwidth and/or resource location occupied for transmitting the secondary synchronization signal.

Preferably, the first bandwidth is equal to the bandwidth occupied by an integer number of physical resource blocks (PRBs), for example, the first bandwidth is equal to the bandwidth occupied by 12 PRBs, of course However, other numbers are possible, for example bandwidth occupied by 10 or 14 PRBs.

Preferably, in embodiments of the present application, the first channel or first bandwidth occupied for transmitting signals may include guard subcarrier spacing on either side.

at 220, the network device occupies a second bandwidth at M second codes and a third bandwidth at S first codes of the N first codes; transmitting a second channel or signal included in the synchronization signal block to the terminal device, wherein the frequency domain resource locations of the first bandwidth and the third bandwidth do not overlap each other, and the M and the S are 1 or more; is an integer of

Preferably, N first codes and M second codes are arranged crosswise.

For example, the N is equal to 2, the M is equal to 2, and the order of the N first codes and the M second codes in the time domain is: the first code, the second code , the first code and the second code.

Preferably, when M is greater than 1, the M first codes may be consecutive M codes or non-consecutive M codes.

Preferably, said first channel or signal comprises PBCH. Preferably, the PBCH referred to in the embodiments of this application may include the PBCH DMRS.

Preferably, the first channel or signal contains PSS but does not contain SSS, which means that PBCH can be transmitted only in codes that transmit PSS and not in codes that transmit SSS.

Or, the first channel or signal includes SSS but not PSS, which means that PBCH can be transmitted only in codes that transmit SSS, and PBCH can not be transmitted in codes of transmitted PSS.

Or, the first channel or signal includes PSS and includes SSS, which means that PBCH can be transmitted in codes that transmit PSS and codes that transmit SSS.

Although many of the embodiments of the present application have been described as having a first channel or signal comprising PSS and/or SSS and a second channel or signal comprising PBCH, embodiments of the present application are not so limited. should be understood.

For example, the first channel or signal comprises PSS and the second channel or signal comprises SSS, or the first channel or signal comprises SSS and the second channel or signal comprises PSS, or the first A channel or signal includes PBCH and a second channel or signal includes PSS and/or SSS.

Preferably, the frequency domain resources occupied by the second bandwidth may be continuous frequency domain resources or discontinuous frequency domain resources.

Preferably, the second channel or signal refers to a channel signal occupying the second bandwidth in the second code and the third bandwidth in the first code, and may include channels or signals having the same bandwidth characteristics. Well, or include certain types of channels or signals, the granularity of classification can depend on the specific situation, and the embodiments of the present application do not limit it.

Preferably, when M is greater than 1, the width and/or resource location of the second bandwidth occupied for transmitting the second channel or signal in each second code is second in at least one other second code. The bandwidth width and/or resource location occupied for transmitting the channel or signal may differ.

Of course, the width and/or resource locations of the second bandwidths occupied for transmitting the second channels or signals in the M second codes may be the same.

Preferably, when S is greater than 1, the width and/or resource location of the third bandwidth occupied for transmitting the second channel or signal in each first code in the S first codes is at least one other The bandwidth width and/or resource location occupied for transmitting the second channel or signal in one first code may be different.

Of course, the width and/or resource locations of the second bandwidths occupied for transmitting the second channels or signals in the S first codes may be the same.

Preferably, S is N or less.

If the first channel or signal contains PSS and SSS, and the second channel or signal is PBCH and N is equal to 2, S is less than N means that the code occupied only by PSS or only SSS transmits PBCH. means that it can be used to

Preferably, the second bandwidth is equal to the bandwidth occupied by an integer number of PRBs.

Preferably, the second bandwidth is less than the bandwidth occupied by 24 PRBs, e.g. equal to the bandwidth occupied by 18 PRBs, but may of course be other values, e.g. Equal to the bandwidth occupied by 20, 16, etc. PRBs.

Preferably, the third bandwidth is equal to the bandwidth occupied by an integer number of PRBs.

Preferably, the third bandwidth is equal to the bandwidth occupied by 6 PRBs, of course it may be another number, for example the bandwidth occupied by 5, 4 etc. equal.

Preferably, in embodiments of the present application, the second bandwidth occupied for transmitting the second channel or signal may include guard subcarrier spacing on either side.

Preferably, in embodiments of the present application, the third bandwidth occupied for transmitting the second channel or signal may include guard subcarrier spacing on either side.

At 230, the terminal acquires, at the N first codes, a first channel or signal included in the synchronization signal block transmitted by the network device on the first bandwidth.

Specifically, the terminal device can perform blind detection on the N first codes, thereby obtaining the first channel or signal, eg, PSS and SSS, that the network device transmits on the first bandwidth.

At 240, the terminal device receives the M second codes from the second bandwidth and the S first codes of the N first codes from the third bandwidth, and the network device Obtaining a second channel or signal contained in the transmitted synchronization signal block.

Accordingly, after the terminal device acquires the first channel or signal and the second channel or signal, it acquires the cell identifier (ID), performs time-frequency synchronization, and obtains the physical broadcasting channel (PBCH) information. or perform RRM measurements based on the SSS and PBCH Demodulation Reference Signals (DMRS).

Preferably, a network device can transmit multiple SS Blocks, and multiple SS Blocks can constitute a Synchronization Signal burst set (SS burst set). A plurality of SS Blocks can be transmitted using a plurality of transmission beams, and the transmission beam of each SS Block is different from the transmission beams of other SS Blocks.

Preferably, the sum of the bandwidths of the first bandwidth and the third bandwidth is less than or equal to the second bandwidth.

For example, if the second bandwidth is X and the first bandwidth is Y, then the third bandwidth may be less than or equal to XY, i.e., for N first codes, the first channel or The bandwidth Y for transmitting the signal is such that in the S codes in the N first codes, the bandwidth for transmitting the second channel or signal is XY or less, and in the second code, the second channel or signal X is the bandwidth for transmitting .

When S is less than N, the remaining XY bandwidths are non-first channels or signals and non-second channels or signals in the other codes excluding the S first codes among the N first codes. other channels or signals may be transmitted, or any channel or signal may not be transmitted.

Preferably, the frequency domain resource location occupied by the first bandwidth and the frequency domain resource location occupied by the third bandwidth are each a subset of the frequency domain resource location occupied by the second bandwidth. At this time, preferably, the center frequency point of the second bandwidth may be referred to as the center frequency point of the synchronization signal block.

The frequency domain resource location occupied by the first bandwidth and the frequency domain resource location occupied by the third bandwidth may be equal to the frequency domain resource location occupied by the second bandwidth, or the second bandwidth is It may be a subset of the occupied frequency domain resource locations.

Preferably, the center frequency point of the first bandwidth is equal to the center frequency point of the second bandwidth. At this time, the frequency domain resource location of the third bandwidth may be located on both sides of the frequency domain resource location of the first bandwidth. At this time, preferably, the sum of the bandwidths of the first bandwidth and the third bandwidth is less than or equal to the second bandwidth.

For example, if the first channel or signal includes PSS and SSS, the second channel or signal includes PBCH, the second bandwidth is X, and the first bandwidth is Y, then within the SS block: An extra bandwidth of (XY)/2 bandwidth is left on both sides of the code transmitting PSS and SSS, and the excess bandwidth on both sides of the PSS/SSS code is It is used for transmitting PBCH.

For example, as shown in FIG. 3, in the SS block, the bandwidth of the PBCH in the code transmitting only the PBCH is 18 PRBs, but the bandwidth occupied by the PSS and SSS is 12 PRBs. and the center frequency point of the 12 PRBs occupied by the PSS and SSS is the center frequency point of the SS block, leaving 3 PRBs on each side of the PSS and 3 PRBs on both sides of the SSS. , these remaining PRBs can be used to transmit the PBCH.

When the center frequency point of the first bandwidth is equal to the center frequency point of the second bandwidth, the frequency domain resource location of the third bandwidth is further located to one side of the frequency domain resource location of the first bandwidth. It should be understood that the other side may transmit non-first channels or signals and non-second channels or signals or may not transmit any channels or signals. Preferably, the frequency domain resource location of the third bandwidth is located within the low frequency range of the second bandwidth, and the frequency domain resource location of the first bandwidth is the high frequency range of the second bandwidth range, wherein the frequency range of the third bandwidth is less than the frequency range of the first bandwidth.

At this time, preferably, the lowest frequency domain resource location of the third bandwidth is equal to the lowest frequency domain resource location of the second bandwidth, and the highest frequency domain resource location of the first bandwidth is the second band. may be equal to the frequency domain resource location with the highest width,
For example, if a first channel or signal includes PSS and SSS, a second channel or signal includes PBCH, a second bandwidth is X, and a first bandwidth is Y, then within the SS block: Codes for transmitting PSS and SSS One-side excess bandwidth of (XY) bandwidth is left, except for codes that only carry PBCH, one-side excess bandwidth in codes that carry PSS and SSS carries PBCH. used to do

As shown in FIG. 4, in the SS block, the bandwidth of the PBCH in the code transmitting only the PBCH is 18 PRBs, but the bandwidth occupied by the PSS/SSS is 12 PRBs (PSS and protection subcarriers on both sides of the SSS), and in the code transmitting the PSS and SSS, the 12 PRBs occupied by the PSS and SSS are located in the high frequency range of the SS block, and the low frequency range of the SS block. 6 PRBs are left inside, and these remaining PRBs are all used to transmit the PBCH.

Preferably, the frequency domain resource locations of the first bandwidth are located within the low frequency range of the second bandwidth, and the frequency domain resource locations of the third bandwidth are within the high frequency range of the second bandwidth. Located in

For example, if a first channel or signal includes PSS and SSS, a second channel or signal includes PBCH, a second bandwidth is X, and a first bandwidth is Y, then within the SS block: Excess bandwidth of (XY) bandwidth left on one side for codes transmitting PSS and SSS, except for codes transmitting PBCH only, bandwidth left on one side for codes transmitting PSS and SSS is used to transmit the PBCH.

As shown in FIG. 5, in the SS block, the bandwidth of the PBCH in the code transmitting only the PBCH is 18 PRBs, but the bandwidth occupied by the PSS/SSS is 12 PRBs (PSS and protection subcarriers on both sides of the SSS), and in the code transmitting the PSS and SSS, if the 12 PRBs occupied by the PSS and SSS are located within the low frequency range of the SS block, the high frequency range of the SS block 6 PRBs are left inside, and these remaining PRBs are all used to transmit the PBCH.

Preferably, the network device starts from the first code among the N first codes and the M second codes according to the method of first frequency domain and then time domain, and then the N first codes. and mapping the second channels or signals so that the low-frequency resources are first and the high-frequency resources are last according to the order of the M second codes in the time domain, and in the first code The mapped bandwidth is the third bandwidth, the mapped bandwidth in the second code is the second bandwidth, and the network device maps the second channel or signal to the terminal device to send. Accordingly, the terminal equipment starts from the first code among the N first codes and the M second codes, and then selects the N first demapping the second channel or signal so that the low frequency domain resource is first and the high frequency domain resource is last according to the order of the code and the M second codes in the time domain; The bandwidth demapped at the code is the third bandwidth, and the bandwidth demapped at the second code is the second bandwidth.

For example, as shown in FIG. 6, the PBCH mapping is performed based on the above-described method of frequency domain followed by time domain in the frequency band in which PBCH can be transmitted.

For example, taking FIG. 6 as an example, the PBCH is the first frequency domain and then the time domain (starting from the first code, the low frequency domain bandwidth first, the high time domain bandwidth later, and then the code operates in this way), that is, mapping is performed based on the order of PBCH1-PBCH2-PBCH3-PBCH4-PBCH5-PBCH6 bandwidths in FIG. The width is also mapped based on the order from the low frequency region to the high frequency region.

In the embodiments of the present application, the mapping may be based on the time domain or the frequency domain first, or the frequency domain mapping may be performed based on the high frequency and then the high frequency again. It should be understood that mapping may be performed because when a terminal device performs a cell search in a band, the value of the synchronization channel raster in the cell search is related to the bandwidth of the terminal and also related to the bandwidth occupied by the SS block. , the SS block occupies a larger bandwidth, resulting in a smaller sync channel raster value for cell search.

Therefore, embodiments of the present application can transmit the second channel or signal in the code that transmits the first channel or signal, and can reduce the overall bandwidth occupied by the synchronization signal block, thereby allowing the initial search While reducing the number of times, there is no need to significantly reduce the transmission resources of the second channel or signal, so reducing the bandwidth of the synchronization signal block reduces the impact on the second channel or signal transmission characteristics or can be avoided, thereby improving communication characteristics.

For example, if the first channel or signal includes PSS and SSS and the second channel or signal is PBCH, the sequence length of PSS and SSS is 127, occupying 127 REs of 12 PRBs. and the PBCH channel needs to occupy 288 REs of 24 PRBs, as shown in FIG. and only the PBCH is transmitted in the fourth code, the bandwidth occupied by the SS Block is the bandwidth occupied by 24 PRBs, and 6 in the first and third codes, as shown in FIG. If the PRB is occupied to transmit the PBCH, the bandwidth of the SS Block is 18 PRBs, thereby reducing the bandwidth of the SS Block on the basis of reducing the resources occupied by the PBCH to avoid can be used, thereby improving the communication characteristics.

Although the above description describes the first channel or signal and the second channel or signal as the channels or signals included in the synchronization signal block, the embodiments of the present application are not limited to this, and the first channel or signal and the second channel or signal may be a channel or signal included in the synchronization signal block, for example, the first channel or signal is a physical downlink control channel (Physical Downlink Control Channel, PDCCH), and the second channel or signal is a physical downlink shared channel ( Physical Downlink Shared Channel, PDSCH), or that the first channel or signal and the second channel or signal are other channels or signals.

FIG. 8 is a schematic block diagram of a network device 300 according to an embodiment of the present application. As shown in FIG. 8, the network device 300 includes a first transmission unit 310 and a second transmission unit 320, the first transmission unit 310 occupying a first bandwidth in N first codes. , transmitting the first channel or signal included in the synchronization signal block to the terminal device, wherein said N is an integer greater than or equal to 1; The second transmission unit 320 occupies a second bandwidth in M second codes and a third bandwidth in S first codes of the N first codes. , transmitting a second channel or signal contained in the synchronization signal block to the terminal device, wherein the frequency domain resource locations of the first bandwidth and the third bandwidth do not overlap each other, and the M and the S are 1; is configured to be an integer greater than or equal to .

It should be understood that the network device 600 can correspond to the network device in the method 200 and implement the corresponding operations implemented by the network device in the method 200, and the description is omitted here for brevity.

FIG. 9 is a schematic block diagram of a terminal device 400 according to an embodiment of the present application. As shown in FIG. 9, the terminal device 400 includes an acquisition unit 410, which acquires at M second codes from a second bandwidth and among the N first codes obtaining a second channel or signal included in the synchronization signal block transmitted by the network device from a third bandwidth in S first codes; , the network device transmits a first channel or signal included in the synchronization signal block, the frequency domain resource locations of the third bandwidth and the first bandwidth do not overlap, and the M, the N and the S is configured to be an integer greater than or equal to one.

Preferably, the acquisition unit 410 can also perform the operation at 230 to acquire a first channel or signal.

It should be understood that the terminal device 400 can correspond to the terminal device in the method 200 and implement the corresponding operations that the terminal device in the method 200 has implemented, and for the sake of brevity, the description is omitted here.

FIG. 10 is a schematic structural diagram of a system chip 500 according to an embodiment of the present application. The system chip 500 of FIG. 10 includes an input interface 501 and an output interface 502, the processor 503 and the memory 504 can be connected via an internal communication connection line, and the processor 503 can execute the code in the memory 504. Used.

Preferably, when the code is executed, the processor 503 implements the method performed by a network device in the method embodiment. Descriptions are omitted here for the sake of brevity.

Preferably, when the code is executed, the processor 503 implements a method performed by a terminal device in method embodiments. Descriptions are omitted here for the sake of brevity.

FIG. 11 is a schematic block diagram of a communication device 600 according to an embodiment of the present application. As shown in FIG. 11, communication device 600 includes processor 610 and memory 620 . The memory 620 can store program code, and the processor 610 can execute program code stored in the memory 620 .

Preferably, as shown in FIG. 11, the communication device 600 may include a transceiver 630, and the processor 610 can control the transceiver 630 to communicate with the outside world.

Preferably, the processor 610 can invoke the program code stored in the memory 620 to perform corresponding operations of the network device in the method embodiments, which are omitted here for brevity.

Preferably, the processor 610 can invoke the program code stored in the memory 620 to perform the corresponding operations of the terminal device in the method embodiments, which are omitted here for brevity.

It should be understood that the processor of the embodiments of the present application may be an integrated circuit chip and has signal processing capabilities. In the process of implementation, each step of the above method embodiments can be completed by hardware integrated logic or software type commands in a processor. The processor may be a general purpose processor, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), a Field Programmable Gate Array (FPGA) or other programmable logic device; It may be a discrete gate or transistor logic device, a discrete hardware component. Each method, step, and logic block diagram disclosed in an embodiment of the present application can be implemented or executed. A general-purpose processor may be a microprocessor, or the processor may be any conventional processor, and so on. The steps referring to the methods disclosed in the embodiments of the present application may be directly embodied as being executed and completed by a hardware decoding processor or by a combination of hardware and software modules in the decoding processor. A software module may be located in any art-mature storage medium such as random access memory, flash memory, read only memory, programmable read only memory or electrically erasable programmable memory, registers or the like. The storage medium is located in the memory and the processor reads the information in the memory and in combination with the hardware completes the steps of the above method.

It is understood that memory in embodiments of the present application may be volatile memory, or non-volatile memory, or may include both volatile and non-volatile memory. Non-volatile memory includes read-only memory (ROM), programmable read-only memory (ROM, PROM), erasable programmable read-only memory (Erasable PROM, EPROM), electrically erasable programmable read-only memory (Electrically EPROM, EEPROM) or flash memory. Volatile memory can be Random Access Memory (RAM), which is used as external cache memory. By way of example but not limitation, many forms of RAM, such as Static Random Access Memory (Static RAM, SRAM), Dynamic Random Access Memory (Dynamic RAM, DRAM), Synchronous Dynamic Random Access Memory (DRAM, SDRAM), Double Data Rate SDRAM (DDR SDRAM), Enhanced Synchronous Dynamic Random Access Memory (Enhanced SDRAM, ESDRAM), Synchlink Dynamic Random Access Memory (Synchlink DRAM, SLDRAM) and Direct Memory Bus Random Access Memory (Direct Rambus RAM, DR RAM) can be used. It should be noted that the memory of the systems and methods described herein is intended to include, but not be limited to, these and any other suitable types of memory.

Those skilled in the art will appreciate that the units and algorithmic steps of each example described with reference to the embodiments disclosed herein can be implemented in electronic hardware or in a combination of computer software and electronic hardware. Whether such functionality is implemented as hardware or as software depends on the particular application and design constraints of the technical solution. Skilled artisans may implement the described functionality using different methods for each particular application, but such implementations should not be considered beyond the scope of the present application.

Those skilled in the art can clearly understand that for convenience and brevity of explanation, the specific working steps of the above systems, devices and units can refer to the corresponding steps of the above method embodiments, and are described here. omitted.

It should be understood that in some of the examples provided herein, the disclosed systems, devices and methods can be implemented in other ways. For example, the embodiments of the apparatus described above are merely schematic, for example, the division of the units is merely a division of logic functions, and may have other distinction schemes when actually implemented. For example, multiple units or components may be combined or integrated into another system, or certain features may be ignored or not performed. On the other hand, any mutual coupling or direct coupling or communication connection shown or discussed may use an indirect coupling or communication connection of some interface, device or unit, whether electrical, mechanical or otherwise. good.

The unit described as the separating member may be physically separated or may not be physically separated, and the member displayed as a unit may be a physical unit, Or it may not be a physical unit, ie it may be located in one place, or it may be distributed over several network units. The location or all units can be selected according to actual needs to achieve the purpose of the solution of the present embodiment.

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

The functions may be implemented in the form of software functional units and stored in a single computer-readable storage medium when sold or used as an independent product. Based on this understanding, the technical solution of the present application or the part contributing to the prior art or the part of the technical solution may be embodied in the form of a software product, and the computer software product is stored in a single storage medium. , including some commands, by which a single computer device (which may be a personal computer, a server, or a network device, etc.) executes all or part of the steps of the method described in each embodiment of the present application. Let The storage medium includes various media capable of storing program code such as USB memory, portable hard disk, read-only memory (ROM), random access memory (RAM), magnetic disk or optical disk. .

Although the above are only specific embodiments of this application, the protection scope of this application is not limited thereto, and those skilled in the art can easily conceive of modifications or replacements within the technical scope disclosed in this application. shall fall within the protection scope of the present application. Therefore, the protection scope of this application shall be subject to the protection scope of the claims.

Claims (17)

A wireless communication method comprising:
a network device transmitting a synchronization signal block to a terminal device, the synchronization signal block including a primary synchronization signal (PSS), a secondary synchronization signal (SSS) and a physical broadcast channel (PBCH);
the synchronization signal block has four consecutive codes in the time domain: code S0, code S1, code S2 and code S3;
transmitting the PSS at the code S0 and transmitting the SSS at the code S2;
transmitting the PBCH in three codes of the code S1, the code S2 and the code S3;
the frequency range of the PSS is the first bandwidth, and the frequency range of the SSS is the first bandwidth;
The frequency range of the PBCH transmitted at the symbol S1 is the second bandwidth, the frequency range of the PBCH transmitted at the symbol S3 is the second bandwidth, and the frequency range of the PBCH transmitted at the symbol S2 is the second bandwidth. the frequency range of the PBCH being the third bandwidth;
and the third bandwidth does not overlap with the first bandwidth. said third bandwidth comprises a first sub-bandwidth and a second sub-bandwidth, said first sub-bandwidth being spaced apart from said second sub-bandwidth;
2. The method of claim 1, wherein the first bandwidth is between the first sub-bandwidth and the second sub-bandwidth. The network device first converts the PBCH from the low frequency to the high frequency of the code S1, then from the low frequency to the high frequency of the code S2, and finally from the low frequency to the high frequency of the code S3. 3. A method according to claim 1 or 2, comprising mapping to S2 and said code S3. A wireless communication method comprising:
a terminal device receiving a synchronization signal block, the synchronization signal block including a primary synchronization signal (PSS), a secondary synchronization signal (SSS), and a physical broadcast channel (PBCH);
the synchronization signal block has four consecutive codes in the time domain: code S0, code S1, code S2 and code S3;
transmitting the PSS at the code S0 and transmitting the SSS at the code S2;
transmitting the PBCH in three codes of the code S1, the code S2 and the code S3;
the frequency range of the PSS is the first bandwidth, and the frequency range of the SSS is the first bandwidth;
The frequency range of the PBCH transmitted at the symbol S1 is the second bandwidth, the frequency range of the PBCH transmitted at the symbol S3 is the second bandwidth, and the frequency range of the PBCH transmitted at the symbol S2 is the second bandwidth. the frequency range of the PBCH being the third bandwidth;
The wireless communication method, wherein the third bandwidth does not overlap with the first bandwidth. 5. The method of claim 4, wherein the first bandwidth is a subset of the second bandwidth and the third bandwidth is a subset of the second bandwidth. 6. Method according to claim 4 or 5, characterized in that the sum of the frequency range of the third bandwidth and the frequency range of the first bandwidth is part of the frequency range of the second bandwidth. said third bandwidth comprises a first sub-bandwidth and a second sub-bandwidth, said first sub-bandwidth being spaced apart from said second sub-bandwidth;
6. A method according to claim 4 or 5, wherein said first bandwidth is between said first sub-bandwidth and said second sub-bandwidth. A network device,
a transmission unit configured to transmit a synchronization signal block to a terminal device, said synchronization signal block comprising a primary synchronization signal (PSS), a secondary synchronization signal (SSS) and a physical broadcast channel ( PBCH);
the synchronization signal block has four consecutive codes in the time domain: code S0, code S1, code S2 and code S3;
transmitting the PSS at the code S0 and transmitting the SSS at the code S2;
transmitting the PBCH in three codes of the code S1, the code S2 and the code S3;
the frequency range of the PSS is the first bandwidth, and the frequency range of the SSS is the first bandwidth;
The frequency range of the PBCH transmitted at the symbol S1 is the second bandwidth, the frequency range of the PBCH transmitted at the symbol S3 is the second bandwidth, and the frequency range of the PBCH transmitted at the symbol S2 is the second bandwidth. the frequency range of the PBCH being the third bandwidth;
The network device, wherein the third bandwidth is non-overlapping with the first bandwidth. 9. The network device of claim 8, wherein the first bandwidth is a subset of the second bandwidth and the third bandwidth is a subset of the second bandwidth. 10. The network device according to claim 8 or 9, wherein the sum of the frequency range of the third bandwidth and the frequency range of the first bandwidth is part of the frequency range of the second bandwidth. a terminal device, comprising an acquisition unit;
the acquisition unit is configured to receive a synchronization signal block, the synchronization signal block including a primary synchronization signal (PSS), a secondary synchronization signal (SSS) and a physical broadcast channel (PBCH);
the synchronization signal block has four consecutive codes in the time domain: code S0, code S1, code S2 and code S3;
transmitting the PSS at the code S0 and transmitting the SSS at the code S2;
transmitting the PBCH in three codes of the code S1, the code S2 and the code S3;
the frequency range of the PSS is the first bandwidth, and the frequency range of the SSS is the first bandwidth;
The frequency range of the PBCH transmitted at the symbol S1 is the second bandwidth, the frequency range of the PBCH transmitted at the symbol S3 is the second bandwidth, and the frequency range of the PBCH transmitted at the symbol S2 is the second bandwidth. the frequency range of the PBCH being the third bandwidth;
The terminal device, wherein the third bandwidth does not overlap with the first bandwidth. said third bandwidth comprises a first sub-bandwidth and a second sub-bandwidth, said first sub-bandwidth being spaced apart from said second sub-bandwidth;
The terminal device according to claim 11, wherein the first bandwidth is between the first sub-bandwidth and the second sub-bandwidth. the highest frequency of said first sub-bandwidth is equal to the highest frequency of said second bandwidth and the lowest frequency of said second sub-bandwidth is equal to the lowest frequency of said second bandwidth; or said first sub-bandwidth is higher than the highest frequency of the first bandwidth, and the highest frequency of the second sub-bandwidth is lower than the lowest frequency of the first bandwidth. The terminal device according to any one of claims 11 to 13, characterized in that said second bandwidth is equal to the frequency range occupied by 20 PRBs. Said acquisition unit further comprises said S1, S2, firstly from low frequency to high frequency of said sign S1, then from low frequency to high frequency of said sign S2, and finally from low frequency to high frequency of said sign S3. , and demapping of the PBCH in the code S3. is a chip
3. A chip, characterized in that it comprises a processor that causes a device on which the chip is mounted to perform the method of claim 1 or 2 by calling up and executing a computer program from memory. is a chip
Said chip, characterized in that it comprises a processor, which causes a device on which said chip is mounted to carry out the method according to claim 4 or 5, by calling up and executing a computer program from memory.

Images