Wireless communication method, network device, and terminal device

Abstract

To provide a wireless communication method, a network device, and a terminal device that improve communication characteristics in terms of SS block transmission.SOLUTION: A method in a wireless communication system includes: a network device occupying a first bandwidth in N (N is an integer equal to or greater than 1) first codes, and transmitting a first channel or signal included in a synchronization signal block to a terminal device; and the network device occupying a second bandwidth in M (M is an integer equal to or greater than 1) second codes, and occupying a third bandwidth in S (S is an integer equal to or greater than 1) first codes among the N first codes, and transmitting a second channel or signal included in the synchronization signal block to the terminal device. The frequency domain resource positions of the first bandwidth and the third bandwidth do not overlap each other.SELECTED DRAWING: Figure 2

Description

Technical Field

[0001] This application relates to the field of communications, and more specifically, to a wireless communication method, a network device, and a terminal device.

Background Art

[0002] Currently, in a Long Term Evolution (LTE) system, the signals for synchronization are the Primary Synchronization Signal (PSS) and the Secondary Synchronization Signal (SSS), and the reference signals for a terminal device to perform Radio Resource Management (RRM) measurements are the Cell Reference Signal (CRS) or the Channel State Information Reference Signal (CSI-RS).

[0003] In a New Radio (NR) system, a network device can send multiple Synchronization Signal Blocks (SS blocks) to a terminal device. The terminal device searches for the SS blocks within the system bandwidth to obtain a cell identifier (ID) for time-frequency synchronization, acquires Physical Broadcast Channel (PBCH) information, and can perform RRM measurements based on the demodulation reference signals (DMRS) of the SSS and PBCH.

[0004] In a new radio system, the requirements for communication characteristics are high. Therefore, how to improve the communication characteristics in terms of the transmission of SS Blocks becomes an urgent problem to be solved.

Summary of the Invention

Problems to be Solved by the Invention

[0005] The embodiments of the present application provide a wireless communication method and apparatus, which can improve communication characteristics in terms of the transmission of SS Blocks.

Means for Solving the Problems

[0006] A wireless communication method according to a 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, where N is an integer greater than or equal to 1; the network device occupies a second bandwidth in M second codes and occupies a third bandwidth in S first codes among the N first codes, and transmits a second channel or signal included in the synchronization signal block to the terminal device, where the frequency domain resource positions of the first bandwidth and the third bandwidth do not overlap with each other, and M and S are integers greater than or equal to 1.

[0007] Therefore, in the embodiments of the present application, a second channel or signal can be transmitted in the code for transmitting the first channel or signal, and the bandwidth occupied by the synchronization signal block can be overall reduced. Thereby, while reducing the number of initial searches, it is not necessary to significantly reduce the transmission resources of the second channel or signal. Therefore, the influence on the transmission characteristics of the second channel or signal caused by reducing the bandwidth of the synchronization signal block can be reduced or avoided, thereby improving communication characteristics.

[0008] Referring to the first aspect, in a possible implementation manner of the first aspect, the first channel or signal includes a primary synchronization signal (PSS) and / or a secondary synchronization signal (SSS).

[0009] Referring to the first aspect or any of the above possible implementation manners, in another possible implementation manner of the first aspect, the first channel or signal includes PSS and SSS, and the first codes occupied by PSS and SSS are different.

[0010] Referring to the first aspect or any of the above possible implementation manners, in another possible implementation manner of the first aspect, the second channel or signal includes a physical broadcast channel (PBCH).

[0011] Referring to the first aspect or any of the above possible implementation manners, in another possible implementation manner 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.

[0012] Referring to the first aspect or any of the above possible implementation manners, in another possible implementation manner of the first aspect, the frequency domain resource position occupied by the first bandwidth and the frequency domain resource position occupied by the third bandwidth are each a subset of the frequency domain resource position occupied by the second bandwidth.

[0013] Referring to the first aspect or any of the above possible implementation manners, in another possible implementation manner of the first aspect, the center frequency point of the first bandwidth is equal to the center frequency point of the second bandwidth.

[0014] Referring to the first aspect or any of the above possible implementation manners, in another possible implementation manner of the first aspect, the frequency domain resource position of the third bandwidth is located on both sides of the frequency domain resource position of the first bandwidth.

[0015] Referring to the first aspect or any of the above possible implementation manners, in another possible implementation manner of the first aspect, the frequency domain resource position of the first bandwidth is located within the low frequency range of the second bandwidth, and the frequency domain resource position of the third bandwidth is located within the high frequency range of the second bandwidth.

[0016] Referring to the first aspect or any of the above possible implementation manners, in another possible implementation manner of the first aspect, the frequency domain resource position of the first bandwidth is located within the high frequency range of the second bandwidth, and the frequency domain resource position of the third bandwidth is located within the low frequency range of the second bandwidth.

[0017] Referring to the first aspect or any of the possible implementation manners described above, in another possible implementation manner of the first aspect, the first bandwidth, the second bandwidth, and / or the third bandwidth are each equal to the bandwidth occupied by an integer number of physical resource blocks (PRBs).

[0018] Referring to the first aspect or any of the possible implementation manners described above, in another possible implementation manner of the first aspect, the second bandwidth is smaller than the bandwidth occupied by 24 PRBs.

[0019] Referring to the first aspect or any of the possible implementation manners described above, in another possible implementation manner of the first aspect, the second bandwidth is equal to the bandwidth occupied by 18 PRBs.

[0020] Referring to the first aspect or any of the possible implementation manners described above, in another possible implementation manner of the first aspect, the first bandwidth is equal to the bandwidth occupied by 12 PRBs.

[0021] Referring to the first aspect or any of the possible implementation manners described above, in another possible implementation manner of the first aspect, S is equal to N.

[0022] Referring to the first aspect or any of the possible implementation manners described above, in another possible implementation manner of the first aspect, N is equal to 2, M is equal to 2, The order of the N first codes and the M second codes in the time domain according to the front-back order is: the first code, the second code, the first code, and the second code.

[0023] Referring to the first aspect or any of the possible implementation manners described above, in another possible implementation manner of the first aspect, for the M second codes, the network device occupies the second bandwidth, and for S of the N first codes, the network device occupies the third bandwidth to transmit the second channel or signal included in the synchronization signal block to the terminal device, Based on the method of the first frequency domain and then the time domain, starting from the first code among the N first codes and the M second codes, and based on the order of the N first codes and the M second codes in the time domain, the network device performs mapping of the second channel or signal such that the low-frequency domain resources are prior and the high-frequency domain resources are subsequent. The bandwidth mapped in the first code is the third bandwidth, and the bandwidth mapped in the second code is the second bandwidth. The network device includes transmitting the second channel or signal after mapping to the terminal device.

[0024] A wireless communication method according to a second aspect, The terminal device acquires the second channel or signal included in the synchronization signal block transmitted by the network device from the second bandwidth in the M second codes and from the third bandwidth in S of the N first codes. In the N first codes, the network device transmits the first channel or signal in the first bandwidth. The frequency domain resource positions of the third bandwidth and the first bandwidth do not overlap with each other, and M, N, and S are integers greater than or equal to 1.

[0025] Therefore, in the embodiments of the present application, the second channel or signal can be transmitted in the code for transmitting the first channel or signal, and the bandwidth occupied by the synchronization signal block can be overall reduced. Thereby, while reducing the number of initial search times, it is not necessary to significantly reduce the transmission resources of the second channel or signal. Therefore, the influence on the second channel or signal transmission characteristics caused by reducing the bandwidth of the synchronization signal block can be reduced or avoided, thereby improving the communication characteristics.

[0026] Referring to the second aspect, in a possible implementation manner of the second aspect, the first channel or signal includes a primary synchronization signal (PSS) and / or a secondary synchronization signal (SSS).

[0027] Referring to the second aspect or any of the above possible implementation manners, in another possible implementation manner of the second aspect, the first channel or signal includes the PSS and SSS, and the first codes occupied by the PSS and SSS are different.

[0028] Referring to the second aspect or any of the above possible implementation manners, in another possible implementation manner of the second aspect, the second channel or signal includes the physical broadcast channel (PBCH).

[0029] Referring to the second aspect or any of the above possible implementation manners, in another possible implementation manner 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.

[0030] Referring to the second aspect or any of the above possible implementation manners, in another possible implementation manner of the second aspect, the frequency domain resource position occupied by the first bandwidth and the frequency domain resource position occupied by the third bandwidth are each a subset of the frequency domain resource position occupied by the second bandwidth.

[0031] Referring to the second aspect or any of the above possible implementation manners, in another possible implementation manner of the second aspect, the center frequency point of the first bandwidth is equal to the center frequency point of the second bandwidth.

[0032] Referring to the second aspect or any of the above possible implementation manners, in another possible implementation manner of the second aspect, the frequency domain resource position of the third bandwidth is located on both sides of the frequency domain resource position of the first bandwidth.

[0033] Referring to the second aspect or any of the above possible implementation manners, in another possible implementation manner of the second aspect, the frequency domain resource position of the first bandwidth is located within the low frequency range of the second bandwidth, and the frequency domain resource position of the third bandwidth is located within the high frequency range of the second bandwidth.

[0034] Referring to the second aspect or any of the possible implementation manners described above, in another possible implementation manner of the second aspect, the frequency domain resource position of the first bandwidth is located within the high frequency range of the second bandwidth, and the frequency domain resource position of the third bandwidth is located within the low frequency range of the second bandwidth.

[0035] Referring to the second aspect or any of the possible implementation manners described above, in another possible implementation manner of the second aspect, the first bandwidth, the second bandwidth, and / or the third bandwidth are each equal to the bandwidth occupied by an integer number of physical resource blocks (PRBs).

[0036] Referring to the second aspect or any of the possible implementation manners described above, in another possible implementation manner of the second aspect, the second bandwidth is smaller than the bandwidth occupied by 24 PRBs.

[0037] Referring to the second aspect or any of the possible implementation manners described above, in another possible implementation manner of the second aspect, the second bandwidth is equal to the bandwidth occupied by 18 physical resource blocks (PRBs).

[0038] Referring to the second aspect or any of the possible implementation manners described above, in another possible implementation manner of the second aspect, the first bandwidth is equal to the bandwidth occupied by 12 PRBs.

[0039] Referring to the second aspect or any of the possible implementation manners described above, in another possible implementation manner of the second aspect, S is equal to N.

[0040] Referring to the second aspect or any of the possible implementation manners described above, in another possible implementation manner of the second aspect, N is equal to 2, M is equal to 2, The order of the N first codes and the M second codes in the time domain according to the front-back order is the first code, the second code, the first code, and the second code.

[0041] Referring to the second aspect or any possible implementation manner described above, in another possible implementation manner of the second aspect, for the M second codes, the terminal device acquires the second channel or signal included in the synchronization signal block transmitted by the network device from the second bandwidth, and for S of the N first codes, from the third bandwidth. Based on the method of the terminal device's first frequency domain then time domain, starting from the first code among the N first codes and the M second codes, and based on the order of the N first codes and the M second codes in the time domain, demapping of the second channel or signal is performed with low-frequency domain resources first and high-frequency domain resources later, where the bandwidth demapped in the first code is the third bandwidth and the bandwidth demapped in the second code is the second bandwidth.

[0042] A network device according to a third aspect is configured to execute the method in the first aspect or any possible implementation manner of the first aspect. Specifically, the network device includes a functional module for executing the method in the first aspect or any possible implementation manner of the first aspect.

[0043] A terminal device according to a fourth aspect is configured to execute the method in the second aspect or any possible implementation manner of the second aspect. Specifically, the terminal device includes a functional module used in the method in the second aspect or any possible implementation manner of the second aspect.

[0044] A network device according to a fifth aspect includes 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, whereby the network device executes the method in the first aspect or any possible implementation manner of the first aspect.

[0045] A terminal device according to a 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, whereby the terminal device executes the method in the second aspect or any possible implementation manner of the second aspect.

[0046] A computer-readable medium according to a seventh aspect, configured to store a computer program, where the computer program is used to execute any of the above methods or includes commands in any possible implementation manner.

[0047] A computer program product including commands according to an eighth aspect, which, when executed on a computer, causes the computer to execute any of the above methods or a method in any possible implementation manner.

Brief Description of Drawings

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Embodiments for Carrying Out the Invention

[0059] Hereinafter, the technical solutions in the embodiments of the present application will be described with reference to the drawings in the embodiments of the present application. It is obvious that the described embodiments are some of the embodiments of the present application, not all of the embodiments. Based on the embodiments of the present application, any other embodiments that can be conceived by those skilled in the art without creative efforts all belong to the technical scope of the present application.

[0060] The technical solution of the embodiment of the present application is applicable 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") system, LTE Frequency Division Duplex (abbreviated as "FDD") system, LTE Time Division Duplex (abbreviated as "TDD"), Universal Mobile Telecommunication System (abbreviated as "UMTS"), Worldwide Interoperability for Microwave Access (abbreviated as "WiMAX") communication system or 5G system, etc.

[0061] FIG. 1 shows a wireless communication system 100 to which an embodiment of the present application is applied. The wireless communication system 100 may include a network device 110. The network device 100 may be a device that communicates with a terminal device. The network device 100 can provide communication coverage in a specific geographical area and communicate with a terminal device (e.g., UE) located within the coverage area. Preferably, the network device 100 may be a base transceiver station (BTS) in a GSM system or a CDMA system, a base station (NodeB, NB) in a WCDMA system, an evolved base station (eNodeB) in an LTE system, 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, a wearable device, a network-side device in a 5G network, or a network device in a future-developed terrestrial public mobile communication network (PLMN), etc.

[0062] The wireless communication system 100 further includes at least one terminal device 120 located within the coverage range of the network device 110. The terminal device 120 may be mobile or fixed. Preferably, the terminal device 120 may refer to an access terminal, a user equipment (UE), a subscriber unit, a subscriber station, a mobile station, a mobile body, a remote station, a remote terminal, a mobile device, a user terminal, a terminal, a wireless communication device, a user agent, or a user device. The access terminal may be a mobile phone, a cordless phone, a Session Initiation Protocol (SIP) phone, a Wireless Local Loop (WLL) station, a Personal Digital Assistant (PDA), a handheld device with a wireless communication function, a processing device connected to a computing device or a wireless modem, an in-vehicle device, a wearable device, a terminal device in a 5G network, or a terminal device in a PLMN for future development, etc.

[0063] Preferably, Device to Device (D2D) communication can be performed between the terminal devices 120.

[0064] Preferably, the 5G system or network may also be referred to as a New Radio (NR) system or network.

[0065] FIG. 1 exemplarily shows a network device and two terminal devices. Preferably, the wireless communication system 100 may include multiple network devices, and each network device's coverage range may include other quantities of terminal devices. The embodiments of the present application do not limit this.

[0066] Preferably, the wireless communication system 100 may further include other network entities such as a network controller and a mobility management entity. The embodiments of the present application do not limit this.

[0067] In this document, it should be understood that, in many cases, the technical terms "system" and "network" are used interchangeably in the text. In this document, the technical term "and / or" simply describes the relationship of the related objects and indicates that three relationships can exist. For example, A and / or B can indicate three situations: only A exists, both A and B exist simultaneously, and only B exists. Also, in this document, the character " / " generally indicates that the related objects before and after are in an "or" relationship.

[0068] FIG. 2 is a schematic flowchart 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 content.

[0069] At 210, the network device occupies a first bandwidth in N first codes and transmits a first channel or signal included in the synchronization signal block to the terminal device, where N is an integer greater than or equal to 1.

[0070] Preferably, when N is greater than 1, the N first codes may be N consecutive codes or N non - consecutive codes.

[0071] Preferably, the first channel or signal includes PSS and / or SSS.

[0072] Preferably, the first channel or signal includes PSS and SSS, and the first codes occupied by the PSS and the SSS are different.

[0073] For example, the first channel or signal includes a primary synchronization signal and a secondary synchronization signal, N is equal to 2, one code is used to transmit the primary synchronization signal, and the other code is used to transmit the secondary synchronization signal. The code occupied to transmit the primary synchronization signal and the code occupied to transmit the secondary synchronization signal can have an interval of one code.

[0074] Preferably, the frequency domain resources occupied by the first bandwidth may be continuous frequency domain resources or discontinuous frequency domain resources.

[0075] Preferably, the first channel or signal refers to a channel or signal that occupies the first bandwidth in the first code, and may include channels or signals having the same bandwidth characteristics, or may include certain types of channels or signals. The granularity of classification can be determined according to specific situations, and the embodiments of the present application do not limit this. For example, the first channel or signal is a synchronization signal, or the first channel or signal is a primary synchronization signal or a secondary synchronization signal.

[0076] Preferably, when N is greater than 1, the width and / or resource position of the first bandwidth occupied for transmitting the first channel or signal in each first code may be different from the width and / or resource position of the bandwidth occupied for transmitting the first channel or signal in at least one other first code.

[0077] For example, the first channel or signal includes a primary synchronization signal and a secondary synchronization signal, N is equal to 2, one code is used to transmit the primary synchronization signal, and the other code is used to transmit the secondary synchronization signal. The bandwidth and / or resource position occupied for transmitting the primary synchronization signal are different from the bandwidth and / or resource position occupied for transmitting the secondary synchronization signal.

[0078] Of course, the width and / or resource position of the first bandwidth occupied for transmitting the first channel or signal in the N codes may be the same.

[0079] For example, the first channel or signal includes a primary synchronization signal and a secondary synchronization signal, N is equal to 2, one code is used to transmit the primary synchronization signal, and the other code is used to transmit the secondary synchronization signal. The bandwidth and / or resource position occupied to transmit the primary synchronization signal is equal to the bandwidth and / or resource position occupied to transmit the secondary synchronization signal.

[0080] 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, other values, such as the bandwidth occupied by 10 or 14 PRBs, may also be used.

[0081] Preferably, in the embodiments of the present application, the first bandwidth occupied to transmit the first channel or signal may include the guard subcarrier intervals on both sides.

[0082] At 220, the network device occupies a second bandwidth in M second codes and occupies a third bandwidth in S first codes among the N first codes, and transmits the second channel or signal included in the synchronization signal block to the terminal device. The frequency domain resource positions of the first bandwidth and the third bandwidth do not overlap with each other, and M and S are integers greater than or equal to 1.

[0083] Preferably, the N first codes and the M second codes are arranged alternately.

[0084] For example, N is equal to 2, M is equal to 2, and the order of the N first codes and the M second codes in the time domain according to the front-back order is the first code, the second code, the first code, and the second code.

[0085] Preferably, when M is greater than 1, the M first codes may be M consecutive codes or M non-consecutive codes.

[0086] Preferably, the first channel or signal includes the PBCH. Preferably, the PBCH referred to in the embodiments of the present application may include the DMRS of the PBCH.

[0087] Preferably, the first channel or signal includes the PSS but does not include the SSS, which means that the PBCH can be transmitted only in the code for transmitting the PSS and not in the code for transmitting the SSS.

[0088] Or, the first channel or signal includes the SSS but does not include the PSS, which means that the PBCH can be transmitted only in the code for transmitting the SSS and not in the code for transmitting the PSS.

[0089] Or, the first channel or signal includes the PSS and includes the SSS, which means that the PBCH can be transmitted in the code for transmitting the PSS and the code for transmitting the SSS.

[0090] Many places in the embodiments of the present application have taken as an example that the first channel or signal includes the PSS and / or the SSS, and the second channel or signal includes the PBCH, but it should be understood that the embodiments of the present application are not limited thereto.

[0091] For example, the first channel or signal includes the PSS, and the second channel or signal includes the SSS, or the first channel or signal includes the SSS, and the second channel or signal includes the PSS, or the first channel or signal includes the PBCH, and the second channel or signal includes the PSS and / or the SSS.

[0092] Preferably, the frequency domain resources occupied by the second bandwidth may be continuous frequency domain resources or discontinuous frequency domain resources.

[0093] Preferably, the second channel or signal refers to a channel signal that occupies a second bandwidth in the second code and a third bandwidth in the first code, and may include a channel or signal having the same bandwidth characteristic, or includes a certain type of channel or signal, and the classification granularity can be determined according to specific situations, and the embodiments of the present application do not limit this.

[0094] Preferably, when M is greater than 1, the width and / or resource position of the second bandwidth occupied for transmitting the second channel or signal in each second code may be different from the width and / or resource position of the bandwidth occupied for transmitting the second channel or signal in at least one other second code.

[0095] Of course, the width and / or resource position of the second bandwidth occupied for transmitting the second channel or signal in the M second codes may be the same.

[0096] Preferably, when S is greater than 1, the width and / or resource position of the third bandwidth occupied for transmitting the second channel or signal in each of the S first codes may be different from the width and / or resource position of the bandwidth occupied for transmitting the second channel or signal in at least one other first code.

[0097] Of course, the width and / or resource position of the second bandwidth occupied for transmitting the second channel or signal in the S first codes may be the same.

[0098] Preferably, S is less than or equal to N.

[0099] The first channel or signal includes PSS and SSS. When the second channel or signal is PBCH and N is equal to 2, the fact that S is smaller than N means that the code occupied by only PSS or only SSS is used to transmit PBCH.

[0100] Preferably, the second bandwidth is equal to the bandwidth occupied by an integer number of PRBs.

[0101] Preferably, the second bandwidth is smaller than the bandwidth occupied by 24 PRBs, for example, equal to the bandwidth occupied by 18 PRBs. Of course, other numerical values may also be used, for example, equal to the bandwidth occupied by 20, 16, or other numbers of PRBs.

[0102] Preferably, the third bandwidth is equal to the bandwidth occupied by an integer number of PRBs.

[0103] Preferably, the third bandwidth is equal to the bandwidth occupied by 6 PRBs. Of course, other numerical values may also be used, for example, equal to the bandwidth occupied by 5, 4, or other numbers of PRBs.

[0104] Preferably, in the embodiments of the present application, the second bandwidth occupied for transmitting the second channel or signal may include the guard sub - carrier intervals on both sides.

[0105] Preferably, in the embodiments of the present application, the third bandwidth occupied for transmitting the second channel or signal may include the guard sub - carrier intervals on both sides.

[0106] At 230, the terminal device acquires, in the N first codes, the first channel or signal included in the synchronization signal block transmitted by the network device with the first bandwidth.

[0107] Specifically, the terminal device can perform blind detection in the N first codes, thereby acquiring the first channel or signal, such as PSS and SSS, transmitted by the network device with the first bandwidth.

[0108] At 240, the terminal device acquires, in the M second codes, from the second bandwidth and, in S of the N first codes, from the third bandwidth, the second channel or signal included in the synchronization signal block transmitted by the network device.

[0109] Thereby, after the terminal device acquires the first channel or signal and the second channel or signal, it can acquire a cell identifier (Identifier, ID), perform time-frequency synchronization, acquire Physical Broadcasting Channel (PBCH) information, or perform RRM measurement based on the demodulation reference signal (DMRS) of the SSS and PBCH, etc.

[0110] Preferably, the network device can transmit a plurality of SS Blocks, and the plurality of SS Blocks can constitute a Synchronisation Signal Burst Set (SS burst set). The plurality of SS Blocks can be respectively transmitted using a plurality of transmission beams, and the transmission beam of each SS Block is different from the transmission beam of other SS Blocks.

[0111] Preferably, the sum of the bandwidths of the first bandwidth and the third bandwidth is less than or equal to the second bandwidth.

[0112] For example, if the second bandwidth is X and the first bandwidth is Y, the third bandwidth may be less than or equal to X - Y. That is, in N first codes, the bandwidth Y for transmitting the first channel or signal, in S codes out of the N first codes, the bandwidth for transmitting the second channel or signal is less than or equal to X - Y, and in the second code, the bandwidth for transmitting the second channel or signal is X.

[0113] When S is smaller than N, in the other codes excluding the S first codes out of the N first codes, the remaining bandwidth of X - Y may be used to transmit other channels or signals other than the first channel or signal and the second channel or signal, or may not transmit any channel or signal.

[0114] Preferably, the frequency domain resource positions occupied by the first bandwidth and the frequency domain resource positions occupied by the third bandwidth are each a subset of the frequency domain resource positions 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.

[0115] The frequency domain resource positions occupied by the first bandwidth and the frequency domain resource positions occupied by the third bandwidth may be equal to the frequency domain resource positions occupied by the second bandwidth, or may be a subset of the frequency domain resource positions occupied by the second bandwidth.

[0116] 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 positions of the third bandwidth may be located on both sides of the frequency domain resource positions 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.

[0117] 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 in the SS block, on both sides of the code transmitting PSS and SSS, an excess bandwidth of (X - Y) / 2 is left, and except for the code transmitting only PBCH, the excess bandwidths on both sides in the PSS / SSS code are both used to transmit PBCH.

[0118] For example, as shown in FIG. 3, in the SS block, if the bandwidth of PBCH in the code transmitting only PBCH is 18 PRBs, but the bandwidths occupied by PSS and SSS are both 12 PRBs, and the center frequency points of the 12 PRBs occupied by PSS and SSS are the center frequency point of the SS block, then 3 PRBs are left on each side of PSS, and 3 PRBs are left on each side of SSS, and these remaining PRBs can be used to transmit PBCH.

[0119] When the center frequency point of the first bandwidth is equal to the center frequency point of the second bandwidth, the frequency domain resource position of the third bandwidth may be further located on one side of the frequency domain resource position of the first bandwidth, and the other side may transmit a non-first channel or signal and a non-second channel or signal channel or signal, or may not transmit any channel or signal. This should be understood. Preferably, the frequency domain resource position of the third bandwidth is located within the low frequency range of the second bandwidth, and the frequency domain resource position of the first bandwidth is located within the high frequency range of the second bandwidth. At this time, the frequency range of the third bandwidth is smaller than the frequency range of the first bandwidth.

[0120] At this time, preferably, the lowest frequency domain resource position of the third bandwidth may be equal to the lowest frequency domain resource position of the second bandwidth, and the highest frequency domain resource position of the first bandwidth may be equal to the highest frequency domain resource position of 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 excess bandwidth of (X - Y) bandwidth is left on one side of the code transmitting PSS and SSS, and excluding the code transmitting only PBCH, the excess bandwidth on one side in the code transmitting PSS and SSS is used for transmitting PBCH.

[0121] As shown in FIG. 4, within the SS block, the bandwidth of PBCH in the code transmitting only PBCH is 18 PRBs, but the bandwidth occupied by PSS / SSS is 12 PRBs (including the protection subcarriers on both sides of PSS and SSS). If the 12 PRBs occupied by PSS and SSS in the code transmitting PSS and SSS are located within the high frequency range of the SS block, then 6 PRBs are left within the low frequency range of the SS block, and all these remaining PRBs are used for transmitting PBCH.

[0122] Preferably, the frequency domain resource position of the first bandwidth is located within the low frequency range of the second bandwidth, and the frequency domain resource position of the third bandwidth is located within the high frequency range of the second bandwidth.

[0123] 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 excess bandwidth of (X - Y) is left on the side of the code transmitting PSS and SSS, and the bandwidth left on the side of the code transmitting PSS and SSS, excluding the code transmitting only PBCH, is used for transmitting PBCH.

[0124] As shown in FIG. 5, within the SS block, the bandwidth of PBCH in the code transmitting only PBCH is 18 PRBs, but the bandwidth occupied by PSS / SSS is 12 PRBs each (including the guard sub - carriers on both sides of PSS and SSS). If the 12 PRBs occupied by PSS and SSS are located within the low frequency range of the SS block in the code transmitting PSS and SSS, then 6 PRBs are left within the high frequency range of the SS block, and all of these remaining PRBs are used for transmitting PBCH.

[0125] Preferably, based on the method of frequency domain first and time domain second, starting from the first code among the N first codes and the M second codes, based on the order of the N first codes and the M second codes in the time domain, the second channel or signal is mapped such that low-frequency domain resources are prioritized over high-frequency domain resources. The bandwidth mapped for the first code is the third bandwidth, and the bandwidth mapped for the second code is the second bandwidth. The network device transmits the second channel or signal after mapping to the terminal device. Accordingly, based on the method of frequency domain first and time domain second, starting from the first code among the N first codes and the M second codes, based on the order of the N first codes and the M second codes in the time domain, the second channel or signal is demapped such that low-frequency domain resources are prioritized over high-frequency domain resources. The bandwidth demapped for the first code is the third bandwidth, and the bandwidth demapped for the second code is the second bandwidth.

[0126] For example, as shown in FIG. 6, PBCH mapping is performed based on the method of frequency domain first and time domain second in the frequency band capable of transmitting the above-described PBCH.

[0127] For example, taking FIG. 6 as an example, PBCH can be mapped based on the method of frequency domain first and time domain second (starting from the first code, prioritizing the low-frequency domain bandwidth first and the high-time domain bandwidth second, and then subsequent codes operate in this manner), that is, mapping is performed based on the order of PBCH1 - PBCH2 - PBCH3 - PBCH4 - PBCH5 - PBCH6 bandwidths in FIG. 6, and also in terms of the bandwidth of each part, mapping is performed based on the order from the low-frequency domain to the high-frequency domain.

[0128] In the embodiments of the present application, mapping may be performed based on a method that prioritizes the time domain or the frequency domain, or when performing frequency domain mapping, it should be understood that mapping may also be performed based on a method of increasing the frequency and then increasing the frequency again. When the terminal device performs cell search in a band, the value of the cell search synchronization channel raster is related to the bandwidth of the terminal and further related to the bandwidth occupied by the SS block. Therefore, the larger the bandwidth occupied by the SS block, the smaller the value of the cell search synchronization channel raster it brings.

[0129] Therefore, in the embodiments of the present application, the second channel or signal can be transmitted in the first channel or the code for transmitting the signal, and the bandwidth occupied by the synchronization signal block can be overall reduced. Thereby, while reducing the number of initial searches, it is not necessary to significantly reduce the transmission resources of the second channel or signal. Therefore, the influence on the second channel or signal transmission characteristics caused by reducing the bandwidth of the synchronization signal block can be reduced or avoided, thereby improving the communication characteristics.

[0130] 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, and it is necessary to occupy 127 REs of 12 PRBs. The PBCH channel needs to occupy 288 REs of 24 PRBs. As shown in FIG. 7, if PSS and SSS are transmitted in the first and third codes respectively, and only PBCH is transmitted in the second and fourth codes, the bandwidth occupied by the SS Block is the bandwidth occupied by 24 PRBs. As shown in FIGS. 3 - 6, if 6 PRBs in the first and third codes are occupied to transmit PBCH, the bandwidth of the SS Block is 18 PRBs. Thereby, based on reducing the bandwidth of the SS Block, it is possible to avoid reducing the resources occupied by PBCH, thereby improving the communication characteristics.

[0131] The above has been described with the first channel or signal and the second channel or signal as the channels or signals included in the synchronization signal block. However, the embodiments of the present application are not limited thereto. The first channel or signal and the second channel or signal may be the channels or signals included in the synchronization signal block. For example, the first channel or signal may be a Physical Downlink Control Channel (PDCCH), and the second channel or signal may be a Physical Downlink Shared Channel (PDSCH), or it should be understood that the first channel or signal and the second channel or signal may be other channels or signals.

[0132] 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 occupies a first bandwidth in N first codes and transmits a first channel or signal included in the synchronization signal block to the terminal device, where N is configured to be an integer greater than or equal to 1. The second transmission unit 320 occupies a second bandwidth in M second codes and occupies a third bandwidth in S of the N first codes, and transmits a second channel or signal included in the synchronization signal block to the terminal device. The frequency domain resource positions of the first bandwidth and the third bandwidth do not overlap with each other, and M and S are configured to be integers greater than or equal to 1.

[0133] It should be understood that the network device 600 can correspond to the network device in method 200 and can implement the corresponding operations implemented by the network device in method 200. For the sake of brevity, the description is omitted here.

[0134] 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. The acquisition unit 410 acquires a second channel or signal included in the synchronization signal block transmitted by the network device from a second bandwidth in M second codes and from a third bandwidth in S first codes among the N first codes. The network device transmits a first channel or signal included in the synchronization signal block at a first bandwidth in the N first codes. The frequency domain resource positions of the third bandwidth and the first bandwidth do not overlap with each other, and M, N, and S are configured to be integers greater than or equal to 1.

[0135] Preferably, the acquisition unit 410 further executes an operation at 230 and can acquire a first channel or signal.

[0136] It should be understood that the terminal device 400 can correspond to the terminal device in Method 200 and can implement the corresponding operations implemented by the terminal device in Method 200. For the sake of brevity, the description is omitted here.

[0137] FIG. 10 is a schematic structural diagram of a system chip 500 according to an embodiment of the present application. The system chip 500 in 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 is used to execute the code in the memory 504.

[0138] Preferably, when the code is executed, the processor 503 implements a method that is executed by a network device in an embodiment of the method. For the sake of brevity, the description is omitted here.

[0139] Preferably, when the code is executed, the processor 503 implements a method that is executed by a terminal device in an embodiment of the method. For the sake of brevity, the description is omitted here.

[0140] 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, the communication device 600 includes a processor 610 and a memory 620. The memory 620 can store program code, and the processor 610 can execute the program code stored in the memory 620.

[0141] 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.

[0142] Preferably, the processor 610 can call the program code stored in the memory 620 and execute the corresponding operations of the network device in the method embodiment. For the sake of brevity, the description is omitted here.

[0143] Preferably, the processor 610 can call the program code stored in the memory 620 and execute the corresponding operations of the terminal device in the method embodiment. For the sake of brevity, the description is omitted here.

[0144] The processor in the embodiments of this application may be an integrated circuit chip, and it should be understood that it has signal processing capabilities. In the realization process, each step of the embodiments of the above method can be completed by the integrated logic circuit of the hardware in the processor or a command in the form of software. The above 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 devices, discrete gates or transistor logic devices, discrete hardware components. Each method, step, and logic block diagram disclosed in the embodiments of this application can be realized or executed. The general-purpose processor may be a microprocessor, or the processor may be any ordinary processor or the like. The step of referring to the method disclosed in the embodiments of this application is completed by being executed by a hardware decoding processor, or may be directly embodied by being executed by a combination of the hardware and software modules in the decoding processor. The software module may be located in a mature storage medium in this field such as a random access memory, a flash memory, a read-only memory, a programmable read-only memory, or an electrically erasable programmable memory, a register, etc. The storage medium is located in the memory, and the processor reads the information in the memory and combines it with its hardware to complete the steps of the above method.

[0145] It should be understood that the memory in the embodiments of the present application may be volatile memory, or non-volatile memory, or may include both volatile and non-volatile memory. The non-volatile memory may be a read-only memory (ROM), a programmable read-only memory (PROM), an erasable programmable read-only memory (EPROM), an electrically erasable programmable read-only memory (EEPROM), or a flash memory. The volatile memory may be a random access memory (RAM), and it is used as an external cache memory. By way of illustrative but non-limiting description, many forms of RAM can be used, such as static random access memory (SRAM), dynamic random access memory (DRAM), synchronous dynamic random access memory (SDRAM), double data rate synchronous dynamic random access memory (DDR SDRAM), enhanced synchronous dynamic random access memory (ESDRAM), synchlink DRAM (SLDRAM), and direct rambus RAM (DR RAM). It should be noted that the memory of the systems and methods described in the present text is intended to include these and any other suitable types of memory, but is not limited thereto.

[0146] As those skilled in the art will understand, the units and algorithm steps of each example described with reference to the embodiments disclosed in the present text can be implemented by electronic hardware or a combination of computer software and electronic hardware. Whether such a function is implemented as hardware or as software depends on the specific application and design constraints of the technical solution. Those skilled in the art can implement the functions described in different ways for each specific application, but such implementation should not be regarded as exceeding the scope of the present application.

[0147] For the convenience and brevity of description, those skilled in the art can clearly understand that the specific working processes of the above-mentioned systems, devices and units can refer to the corresponding processes of the embodiments of the above-mentioned methods, and the description is omitted here.

[0148] In some embodiments provided by the present application, it should be understood that the disclosed systems, devices and methods can be implemented in other ways. For example, the device embodiments described above are merely schematic. For example, the division of the above-mentioned units is merely a division of logical functions, and when actually implemented, it may have other differentiation methods. For example, a plurality of units or components may be combined, or integrated into another system, or a certain feature may be ignored or not executed. On the other hand, the mutual coupling, direct coupling or communication connection shown or considered may use an indirect coupling or communication connection between certain interfaces, devices or units, and may be in an electrical, mechanical or other form.

[0149] The units described as the above-mentioned separation members may or may not be physically separated. The members shown as units may or may not be physical units, that is, they may be located in one place or distributed among a plurality of network units. According to actual needs, some or all of the units can be selected to achieve the purpose of the solution of this embodiment.

[0150] In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, each unit may physically exist separately, or two or more units may be integrated into one unit.

[0151] When the above functions are realized in the form of software functional units and sold or used as independent products, they may be stored in a computer-readable storage medium. Based on such understanding, the technical solution of the present application, or the part that contributes to the prior art or a part of the technical solution may be embodied in the form of a software product. The computer software product is stored in a storage medium and includes several commands, whereby all or part of the steps of the methods described in each embodiment of the present application are executed on a computer device (which may be a personal computer, a server, or a network device, etc.). The above storage medium includes various media that can store program codes such as USB memory, portable hard disk, read-only memory (ROM), random access memory (RAM), magnetic disk, or optical disk.

[0152] The above are only specific embodiments of the present application, but the protection scope of the present application is not limited thereto. Those that can be easily conceived by those skilled in the art for changes or substitutions within the technical scope disclosed in the present application should be included in the protection scope of the present application. Therefore, the protection scope of the present application shall follow the protection scope of the claims.

Claims

1. 1. A wireless communication method, comprising: A network device transmits a first channel or signal included in a synchronization signal block to a terminal device by occupying a first bandwidth in N first codes, where N is 2, the first channel or signal includes a primary synchronization signal (PSS) and a secondary synchronization signal (SSS), and among the two first codes, one is for transmitting the PSS and the other is for transmitting the SSS; The network device occupies a second bandwidth for M second codes and a third bandwidth for S first codes among the N first codes to transmit a second channel or signal included in the synchronization signal block to the terminal device, where M is 2, S is 1, the second channel or signal includes a physical broadcast channel (PBCH), frequency domain resource positions of the first bandwidth and the third bandwidth do not overlap with each other, and the forward / backward order of the two first codes and the two second codes in the time domain is first code, second code, first code, second code; The sum of the first bandwidth and the third bandwidth is equal to or smaller than the second bandwidth, and the second bandwidth is smaller than the bandwidth occupied by 24 PRBs; A wireless communication method.

2. the second bandwidth is X, the first bandwidth is Y, and no channel or signal is transmitted in the remaining bandwidth of X-Y in codes other than S first codes among the N first codes. The wireless communication method according to claim 1 .

3. The frequency domain resource locations occupied by the first bandwidth and the frequency domain resource locations occupied by the third bandwidth are each a subset of the frequency domain resource locations occupied by the second bandwidth.

3. The wireless communication method according to claim 1 or 2.

4. The frequency domain resource location of the third bandwidth is located on both sides of the frequency domain resource location of the first bandwidth. The wireless communication method according to any one of claims 1 to 3.

5. The second bandwidth is equal to a bandwidth occupied by 18, 20, or 16 PRBs. The wireless communication method according to any one of claims 1 to 4.

6. The PBCH includes a DMRS of the PBCH. The wireless communication method according to any one of claims 1 to 5.

7. The PSS has a sequence length of 127 and occupies 127 REs, the SSS has a sequence length of 127 and occupies 127 REs, and the PBCH occupies 576 REs. The wireless communication method according to any one of claims 1 to 6.

8. 1. A wireless communication method, comprising: The terminal device acquires a first channel or signal included in the synchronization signal block transmitted by the network device from a first bandwidth in N first codes, and acquires a second channel or signal included in the synchronization signal block transmitted by the network device from a second bandwidth in M ​​second codes and from a third bandwidth in S first codes of the N first codes; the N is 2, the first channel or signal includes a primary synchronization signal (PSS) and a secondary synchronization signal (SSS), one of the two first codes is for acquiring a PSS and the other is for acquiring an SSS, the M is 2, the S is 1, the second channel or signal includes a physical broadcast channel (PBCH), the frequency domain resource positions of the first bandwidth and the third bandwidth do not overlap with each other, and the forward and backward order of the two first codes and the two second codes in the time domain is the first code, the second code, the first code, and the second code; The sum of the first bandwidth and the third bandwidth is equal to or smaller than the second bandwidth, and the second bandwidth is smaller than the bandwidth occupied by 24 PRBs; A wireless communication method.

9. the second bandwidth is X, the first bandwidth is Y, and no channel or signal is transmitted in the remaining bandwidth of X-Y in codes other than S first codes among the N first codes. The wireless communication method according to claim 8.

10. The frequency domain resource locations occupied by the first bandwidth and the frequency domain resource locations occupied by the third bandwidth are each a subset of the frequency domain resource locations occupied by the second bandwidth.

10. The wireless communication method according to claim 8 or 9.

11. The frequency domain resource location of the third bandwidth is located on both sides of the frequency domain resource location of the first bandwidth. The wireless communication method according to any one of claims 8 to 10.

12. The second bandwidth is equal to a bandwidth occupied by 18, 20, or 16 PRBs. The wireless communication method according to any one of claims 8 to 11.

13. The PBCH includes a DMRS of the PBCH. A wireless communication method according to any one of claims 8 to 12.

14. The PSS has a sequence length of 127 and occupies 127 REs, the SSS has a sequence length of 127 and occupies 127 REs, and the PBCH occupies 576 REs. A wireless communication method according to any one of claims 8 to 13.

15. A network device, a first transmission unit configured to transmit a first channel or signal included in a synchronization signal block to a terminal device by occupying a first bandwidth in N first codes, where N is 2, the first channel or signal includes a primary synchronization signal (PSS) and a secondary synchronization signal (SSS), and among the two first codes, one is for transmitting the PSS and the other is for transmitting the SSS; a second transmission unit configured to transmit a second channel or signal included in the synchronization signal block to the terminal device by occupying a second bandwidth in M ​​second codes and a third bandwidth in S first codes among the N first codes, wherein the M is 2, the S is 1, the second channel or signal includes a physical broadcast channel (PBCH), the frequency domain resource positions of the first bandwidth and the third bandwidth do not overlap with each other, and the forward / backward order in the time domain of the two first codes and the two second codes is the first code, the second code, the first code, and the second code; The sum of the first bandwidth and the third bandwidth is equal to or smaller than the second bandwidth, and the second bandwidth is smaller than the bandwidth occupied by 24 PRBs; Network device.

16. the second bandwidth is X, the first bandwidth is Y, and no channel or signal is transmitted in the remaining bandwidth of X-Y in codes other than S first codes among the N first codes.

16. The network device of claim 15.

17. The frequency domain resource locations occupied by the first bandwidth and the frequency domain resource locations occupied by the third bandwidth are respectively subsets of the frequency domain resource locations occupied by the second bandwidth; and / or The frequency domain resource location of the third bandwidth is located on both sides of the frequency domain resource location of the first bandwidth.

17. A network device according to claim 15 or 16.

18. The second bandwidth is equal to a bandwidth occupied by 18, 20, or 16 PRBs. A network device according to any one of claims 15 to 17.

19. The PBCH includes a DMRS of the PBCH, and / or The PSS has a sequence length of 127 and occupies 127 REs, the SSS has a sequence length of 127 and occupies 127 REs, and the PBCH occupies 576 REs. A network device according to any one of claims 15 to 18.

20. A terminal device, comprising: an acquisition unit; The acquisition unit is configured to acquire a first channel or signal included in the synchronization signal block transmitted by the network device from a first bandwidth in N first codes, and acquire a second channel or signal included in the synchronization signal block transmitted by the network device from a second bandwidth in M ​​second codes and from a third bandwidth in S first codes of the N first codes; The N is 2, the first channel or signal includes a primary synchronization signal (PSS) and a secondary synchronization signal (SSS), one of the two first codes is for acquiring a PSS and the other is for acquiring an SSS, the M is 2, the S is 1, the second channel or signal includes a physical broadcast channel (PBCH), the frequency domain resource positions of the first bandwidth and the third bandwidth do not overlap with each other, and the forward and backward order of the two first codes and the two second codes in the time domain is the first code, the second code, the first code, and the second code; The sum of the first bandwidth and the third bandwidth is equal to or smaller than the second bandwidth, and the second bandwidth is smaller than the bandwidth occupied by 24 PRBs; Terminal device.

21. the second bandwidth is X, the first bandwidth is Y, and no channel or signal is transmitted in the remaining bandwidth of X-Y in codes other than S first codes among the N first codes. The terminal device according to claim 20.

22. The frequency domain resource locations occupied by the first bandwidth and the frequency domain resource locations occupied by the third bandwidth are respectively subsets of the frequency domain resource locations occupied by the second bandwidth; and / or The frequency domain resource location of the third bandwidth is located on both sides of the frequency domain resource location of the first bandwidth.

22. A terminal device according to claim 20 or 21.

23. The second bandwidth is equal to a bandwidth occupied by 18, 20, or 16 PRBs. A terminal device according to any one of claims 20 to 22.

24. The PBCH includes a DMRS of the PBCH, and / or The PSS has a sequence length of 127 and occupies 127 REs, the SSS has a sequence length of 127 and occupies 127 REs, and the PBCH occupies 576 REs. A terminal device according to any one of claims 20 to 23.

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