Wireless communication method, network device and terminal device

Abstract

The embodiment of the present application provides a wireless communication method and device, which can improve the communication performance in the transmission of SS Block. The method includes: the network device occupies the first bandwidth on N first symbols, and sends the first channel or signal included in the synchronization signal block to the terminal device, wherein N is an integer greater than or equal to 1; the network device occupies the second bandwidth on M second symbols, and occupies the third bandwidth on S first symbols among the N first symbols, and sends the second channel or signal included in the synchronization signal block to the terminal device, wherein the frequency domain resource positions of the first bandwidth and the third bandwidth do not overlap, and M and S are integers greater than or equal to 1.

Description

Technical Field

[0001] The present 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] In the Long Term Evolution (LTE) system, the synchronization signals are the Primary Synchronization Signal (PSS) and the Secondary Synchronization Signal (SSS). The reference signal used by the terminal device for radio resource management (RRM) measurement is the Cell Reference Signal (CRS) or the Channel State Information Reference Signal (CSI-RS).

[0003] In the New Radio (NR) system, the network equipment can send multiple synchronization signal blocks (SS blocks) to the terminal device. The terminal device can search the SS block within the system bandwidth to obtain the cell identifier (ID), perform time and frequency synchronization, obtain the physical broadcast channel (PBCH) information, and perform RRM measurement based on the SSS and the demodulation reference signal (DMRS) of the PBCH.

[0004] In new wireless systems, higher communication performance is required. Therefore, how to improve communication performance in SS Block transmission is an urgent problem to be solved. Summary of the invention

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

[0006] In a first aspect, a wireless communication method is provided, comprising:

[0007] The network device occupies the first bandwidth on N first symbols and sends the 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;

[0008] The network device occupies the second bandwidth on M second symbols and occupies the third bandwidth on S first symbols out of N first symbols, and sends the second channel or signal included in the synchronization signal block to the terminal device, wherein 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.

[0009] Therefore, in an embodiment of the present application, the second channel or signal can be transmitted on the symbol of the first channel or signal, and the bandwidth occupied by the synchronization signal block can be reduced overall, thereby reducing the number of initial searches without significantly reducing the transmission resources of the second channel or signal, thereby reducing or avoiding the impact of reducing the bandwidth of the synchronization signal block on the transmission performance of the second channel or signal, thereby improving communication performance.

[0010] In combination with 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.

[0011] In combination with the first aspect or any one of the foregoing possible implementations, in another possible implementation of the first aspect, the first channel or signal includes a PSS and an SSS, and the first symbols occupied by the PSS and the SSS are different.

[0012] In combination with the first aspect or any one of the foregoing possible implementations, in another possible implementation of the first aspect, the second channel or signal includes a physical broadcast channel PBCH.

[0013] In combination with the first aspect or any one of the foregoing possible implementations, in another possible implementation of the first aspect, a sum of the first bandwidth and the third bandwidth is equal to or less than the second bandwidth.

[0014] In combination with the first aspect or any one of the above possible implementations, in another possible implementation of the first aspect, the frequency domain resource positions occupied by the first bandwidth and the frequency domain resource positions occupied by the third bandwidth are respectively subsets of the frequency domain resource positions occupied by the second bandwidth.

[0015] In combination with the first aspect or any one of the foregoing possible implementations, in another possible implementation of the first aspect, a center frequency point of the first bandwidth is equal to a center frequency point of the second bandwidth.

[0016] In combination with the first aspect or any one of the foregoing possible implementations, in another possible implementation 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.

[0017] In combination with the first aspect or any one of the foregoing possible implementations, in another possible implementation of the first aspect, the frequency domain resource position of the first bandwidth is located within a low frequency range of the second bandwidth; and

[0018] The frequency domain resource position of the third bandwidth is located in the high frequency range of the second bandwidth.

[0019] In combination with the first aspect or any one of the foregoing possible implementations, in another possible implementation of the first aspect, the frequency domain resource position of the first bandwidth is located within a high frequency range of the second bandwidth; and

[0020] The frequency domain resource position of the third bandwidth is located in the low frequency range of the second bandwidth.

[0021] In combination with the first aspect or any one of the foregoing possible implementations, in another possible implementation of the first aspect, the first bandwidth, the second bandwidth and / or the third bandwidth are respectively equal to bandwidths occupied by an integer number of physical resource blocks PRBs.

[0022] In combination with the first aspect or any one of the foregoing possible implementations, in another possible implementation of the first aspect, the second bandwidth is smaller than a bandwidth occupied by 24 PRBs.

[0023] In combination with the first aspect or any one of the foregoing possible implementations, in another possible implementation of the first aspect, the second bandwidth is equal to a bandwidth occupied by 18 PRBs.

[0024] In combination with the first aspect or any one of the foregoing possible implementations, in another possible implementation of the first aspect, the first bandwidth is equal to a bandwidth occupied by 12 PRBs.

[0025] In combination with the first aspect or any of the foregoing possible implementations, in another possible implementation of the first aspect, S is equal to N.

[0026] In combination with the first aspect or any of the foregoing possible implementations, in another possible implementation of the first aspect, N is equal to 2, and M is equal to 2;

[0027] The N first symbols and the M second symbols are arranged in the order of precedence in the time domain: the first symbol, the second symbol, the first symbol, and the second symbol.

[0028] In combination with the first aspect or any of the foregoing possible implementations, in another possible implementation of the first aspect, the network device occupies a second bandwidth on M second symbols, and occupies a third bandwidth on S first symbols of the N first symbols, and sends a second channel or signal included in the synchronization signal block to the terminal device, including:

[0029] The network device maps the second channel or signal in a frequency domain first and then time domain manner, starting from the first symbol among the N first symbols and the M second symbols, and in a sequence of the N first symbols and the M second symbols in the time domain, first with low frequency domain resources and then with high frequency domain resources, wherein the bandwidth mapped on the first symbol is the third bandwidth, and the bandwidth mapped on the second symbol is the second bandwidth;

[0030] The network device sends the mapped second channel or signal to the terminal device.

[0031] In a second aspect, a wireless communication method is provided, including:

[0032] The terminal device obtains, from the first bandwidth, a first channel or signal included in a synchronization signal block sent by the network device on N first symbols;

[0033] The terminal device acquires the second channel or signal included in the synchronization signal block from the second bandwidth on the M second symbols and from the third bandwidth on the S first symbols among the N first symbols;

[0034] The frequency domain resource positions of the third bandwidth and the first bandwidth do not overlap with each other, and the M, the N and the S are integers greater than or equal to 1.

[0035] Therefore, in an embodiment of the present application, the second channel or signal can be transmitted on the symbol of the first channel or signal, and the bandwidth occupied by the synchronization signal block can be reduced overall, thereby reducing the number of initial searches without significantly reducing the transmission resources of the second channel or signal, thereby reducing or avoiding the impact of reducing the bandwidth of the synchronization signal block on the transmission performance of the second channel or signal, thereby improving communication performance.

[0036] In combination with 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.

[0037] In combination with the second aspect or any one of the foregoing possible implementations, in another possible implementation of the second aspect, the first channel or signal includes a PSS and an SSS, and the first symbols occupied by the PSS and the SSS are different.

[0038] In combination with the second aspect or any one of the foregoing possible implementations, in another possible implementation of the second aspect, the second channel or signal includes a physical broadcast channel PBCH.

[0039] In combination with the second aspect or any one of the foregoing possible implementations, in another possible implementation of the second aspect, a sum of the first bandwidth and the third bandwidth is equal to or less than the second bandwidth.

[0040] In combination with the second aspect or any one of the above possible implementations, in another possible implementation of the second aspect, the frequency domain resource positions occupied by the first bandwidth and the frequency domain resource positions occupied by the third bandwidth are respectively subsets of the frequency domain resource positions occupied by the second bandwidth.

[0041] In combination with the second aspect or any one of the foregoing possible implementations, in another possible implementation of the second aspect, a center frequency point of the first bandwidth is equal to a center frequency point of the second bandwidth.

[0042] In combination with the second aspect or any one of the foregoing possible implementations, in another possible implementation 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.

[0043] In combination with the second aspect or any of the foregoing possible implementations, in another possible implementation of the second aspect, the frequency domain resource position of the first bandwidth is located within a low frequency range of the second bandwidth; and

[0044] The frequency domain resource position of the third bandwidth is located in the high frequency range of the second bandwidth.

[0045] In combination with the second aspect or any of the foregoing possible implementations, in another possible implementation of the second aspect, the frequency domain resource position of the first bandwidth is located within a high frequency range of the second bandwidth; and

[0046] The frequency domain resource position of the third bandwidth is located in the low frequency range of the second bandwidth.

[0047] In combination with the second aspect or any one of the foregoing possible implementations, in another possible implementation of the second aspect, the first bandwidth, the second bandwidth and / or the third bandwidth are respectively equal to bandwidths occupied by an integer number of physical resource blocks PRBs.

[0048] In combination with the second aspect or any one of the foregoing possible implementations, in another possible implementation of the second aspect, the second bandwidth is smaller than a bandwidth occupied by 24 PRBs.

[0049] In combination with the second aspect or any one of the foregoing possible implementations, in another possible implementation of the second aspect, the second bandwidth is equal to a bandwidth occupied by 18 physical resource blocks PRBs.

[0050] In combination with the second aspect or any one of the foregoing possible implementations, in another possible implementation of the second aspect, the first bandwidth is equal to a bandwidth occupied by 12 PRBs.

[0051] In combination with the second aspect or any of the foregoing possible implementations, in another possible implementation of the second aspect, S is equal to N.

[0052] In combination with the second aspect or any of the foregoing possible implementations, in another possible implementation of the second aspect, N is equal to 2, and M is equal to 2;

[0053] The N first symbols and the M second symbols are arranged in the order of precedence in the time domain: the first symbol, the second symbol, the first symbol, and the second symbol.

[0054] In combination with the second aspect or any of the foregoing possible implementations, in another possible implementation of the second aspect, the terminal device acquires, on the M second symbols, from the second bandwidth, and on the S first symbols of the N first symbols, from the third bandwidth, the second channel or signal included in the synchronization signal block, including:

[0055] The terminal device demaps the second channel or signal in a frequency domain-first and then time domain manner, starting from the first symbol among the N first symbols and the M second symbols, and demaps the low-frequency domain resources first and then the high-frequency domain resources according to the sequence of the N first symbols and the M second symbols in the time domain, wherein the demapped bandwidth on the first symbol is the third bandwidth, and the demapped bandwidth on the second symbol is the second bandwidth.

[0056] In a third aspect, a network device is provided, which is used to execute the method in the first aspect or any possible implementation of the first aspect. Specifically, the network device includes a functional module for executing the method in the first aspect or any possible implementation of the first aspect.

[0057] In a fourth aspect, a terminal device is provided, which is used to execute the method in the second aspect or any possible implementation of the second aspect. Specifically, the terminal device includes a functional module used for the method in the second aspect or any possible implementation of the second aspect.

[0058] In a fifth aspect, a network device is provided, comprising 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 network device executes the method in the first aspect or any possible implementation of the first aspect.

[0059] In a sixth aspect, a terminal device is provided, comprising 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 executes the method in the second aspect or any possible implementation of the second aspect.

[0060] In a seventh aspect, a computer-readable medium is provided for storing a computer program, wherein the computer program includes instructions for executing any one of the above methods or any possible implementations.

[0061] In an eighth aspect, a computer program product comprising instructions is provided, which, when executed on a computer, enables the computer to execute any one of the above methods or any possible implementation methods. BRIEF DESCRIPTION OF THE DRAWINGS

[0062] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0063] Figure 1 is a schematic diagram of a wireless communication system according to an embodiment of the present application.

[0064] Figure 2 It is a schematic flowchart of a wireless communication method according to an embodiment of the present application.

[0065] Figure 3 It is a schematic diagram of the transmission method of the synchronization signal block according to an embodiment of the present application.

[0066] Figure 4 It is a schematic diagram of the transmission method of the synchronization signal block according to an embodiment of the present application.

[0067] Figure 5 It is a schematic diagram of the transmission method of the synchronization signal block according to an embodiment of the present application.

[0068] Figure 6 It is a schematic diagram of the transmission method of the synchronization signal block according to an embodiment of the present application.

[0069] Figure 7 The diagram is a schematic diagram of a transmission method of a synchronization signal block.

[0070] Figure 8 It is a schematic block diagram of a network device according to an embodiment of the present application.

[0071] Fig. 9 It is a schematic block diagram of a terminal device according to an embodiment of the present application.

[0072] Fig.10 is a schematic block diagram of a system chip according to an embodiment of the present application.

[0073] Fig.11 It is a schematic block diagram of a communication device according to an embodiment of the present application. DETAILED DESCRIPTION

[0074] The following will describe the technical solutions in the embodiments of the present application in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0075] The technical solutions of the embodiments of the present application can be applied to various communication systems, such as: Global System of Mobile communication (GSM) system, Code Division Multiple Access (CDMA) system, Wideband Code Division Multiple Access (WCDMA) system, General Packet Radio Service (GPRS), Long Term Evolution (LTE) system, LTE Frequency Division Duplex (FDD) system, LTE Time Division Duplex (TDD) system, Universal Mobile Telecommunication System (UMTS), Worldwide Interoperability for Microwave Access (WiMAX) communication system or 5G system, etc.

[0076] Figure 1A wireless communication system 100 applied in an embodiment of the present application is shown. 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 may provide communication coverage for a specific geographical area, and may communicate with a terminal device (e.g., UE) located in the coverage area. Optionally, the network device 100 may be a base station (Base Transceiver Station, BTS) in a GSM system or a CDMA system, or a base station (NodeB, NB) in a WCDMA system, or an evolved base station (EvolutionalNode B, eNB or eNodeB) in an LTE system, or a wireless controller in a cloud radio access network (Cloud Radio Access Network, CRAN), or the network device may be a relay station, an access point, a vehicle-mounted device, a wearable device, a network-side device in a 5G network, or a network device in a future evolved public land mobile network (Public Land Mobile Network, PLMN), etc.

[0077] The wireless communication system 100 also includes at least one terminal device 120 located within the coverage of the network device 110. The terminal device 120 may be mobile or fixed. Optionally, the terminal device 120 may refer to an access terminal, a user equipment (UE), a user unit, a user station, a mobile station, a mobile station, 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 cellular 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 wireless communication function, a computing device or other processing device connected to a wireless modem, a vehicle-mounted device, a wearable device, a terminal device in a 5G network or a terminal device in a future evolved PLMN, etc.

[0078] Optionally, terminal devices 120 may perform device-to-device (D2D) communication with each other.

[0079] Optionally, the 5G system or network may also be referred to as a New Radio (NR) system or network.

[0080] Figure 1One network device and two terminal devices are shown exemplarily. Optionally, the wireless communication system 100 may include multiple network devices and each network device may include another number of terminal devices within its coverage area, which is not limited in the embodiments of the present application.

[0081] Optionally, the wireless communication system 100 may also include other network entities such as a network controller and a mobility management entity, which is not limited in the embodiments of the present application.

[0082] It should be understood that the terms "system" and "network" are often used interchangeably in this article. The term "and / or" in this article is only a description of the association relationship of associated objects, indicating that three relationships can exist. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.

[0083] Figure 2 is a schematic flow chart of a wireless communication method 200 according to an embodiment of the present application. The method 200 may optionally be applied to Figure 1 The system shown is not limited thereto. The method 200 includes at least part of the following contents.

[0084] In 210, the network device occupies the first bandwidth on N first symbols and sends the 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.

[0085] Optionally, when N is greater than 1, the N first symbols may be N consecutive symbols or N discontinuous symbols.

[0086] Optionally, the first channel or signal comprises PSS and / or SSS.

[0087] Optionally, the first channel or signal includes a PSS and an SSS, and the first symbols occupied by the PSS and the SSS are different.

[0088] For example, the first channel or signal includes a primary synchronization signal and a secondary synchronization signal, N is equal to 2, one symbol is used to send the primary synchronization signal, and another symbol is used to send the secondary synchronization signal, and the symbols occupied by sending the primary synchronization signal and the symbols occupied by sending the secondary synchronization signal can be separated by one symbol.

[0089] Optionally, the frequency domain resources occupied by the first bandwidth may be continuous frequency domain resources or discontinuous frequency domain resources.

[0090] Optionally, the first channel or signal refers to a channel or signal occupying a first bandwidth on a first symbol, and may include channels or signals having the same bandwidth characteristics, or include channels or signals of a certain category, wherein the granularity of the category division may be determined according to the specific circumstances, and the embodiments of the present application are not limited to 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.

[0091] Optionally, when N is greater than 1, the width and / or resource position of the first bandwidth occupied by sending the first channel or signal on each first symbol may be different from the width and / or resource position of the first bandwidth occupied by sending the first channel or signal on at least one other first symbol.

[0092] For example, the first channel or signal includes a primary synchronization signal and a secondary synchronization signal, N is equal to 2, one symbol is used to send the primary synchronization signal, and the other symbol is used to send the secondary synchronization signal, and the bandwidth and / or resource position occupied by sending the primary synchronization signal is different from the bandwidth and / or resource position occupied by sending the secondary synchronization signal.

[0093] Of course, the width and / or resource position of the first bandwidth occupied by sending the first channel or signal on the N first symbols may be the same.

[0094] For example, the first channel or signal includes a primary synchronization signal and a secondary synchronization signal, N is equal to 2, one symbol is used to send the primary synchronization signal, and the other symbol is used to send the secondary synchronization signal, and the bandwidth and / or resource position occupied by sending the primary synchronization signal is equal to the bandwidth and / or resource position occupied by sending the secondary synchronization signal.

[0095] Optionally, 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, it can also be other values, such as the bandwidth occupied by 10 or 14 PRBs.

[0096] Optionally, in an embodiment of the present application, the first bandwidth occupied by sending the first channel or signal may include guard subcarrier spacing on both sides.

[0097] In 220, the network device occupies the second bandwidth on M second symbols and occupies the third bandwidth on S first symbols among the N first symbols to send the second channel or signal included in the synchronization signal block to the terminal device, wherein the frequency domain resource positions of the first bandwidth and the third bandwidth do not overlap with each other, and the M and the S are integers greater than or equal to 1.

[0098] Optionally, the N first symbols and the M second symbols are arranged crosswise.

[0099] For example, N is equal to 2, and M is equal to 2; the N first symbols and the M second symbols are arranged in the order of precedence in the time domain: the first symbol, the second symbol, the first symbol, and the second symbol.

[0100] Optionally, when M is greater than 1, the M second symbols may be M consecutive symbols or M discontinuous symbols.

[0101] Optionally, the second channel or signal includes a PBCH. Optionally, the PBCH mentioned in the embodiment of the present application may include a DMRS of the PBCH.

[0102] Optionally, the first channel or signal includes the PSS but not the SSS, which means that the PBCH may be transmitted only on symbols where the PSS is transmitted but not on symbols where the SSS is transmitted.

[0103] Alternatively, the first channel or signal includes the SSS but not the PSS, which means that the PBCH may be transmitted only on symbols where the SSS is transmitted but not on symbols where the PSS is transmitted.

[0104] Alternatively, the first channel or signal includes the PSS and the SSS, which means that the PBCH can be transmitted on symbols where the PSS is transmitted and on symbols where the SSS is transmitted.

[0105] It should be understood that although many embodiments of the present application are described using the example that the first channel or signal includes PSS and / or SSS, and the second channel or signal includes PBCH, the embodiments of the present application are not limited to this.

[0106] For example, the first channel or signal includes PSS, and the second channel or signal includes SSS; or, the first channel or signal includes SSS, and the second channel or signal includes PSS; or, the first channel or signal includes PBCH, and the second channel or signal includes PSS and / or SSS.

[0107] Optionally, the frequency domain resources occupied by the second bandwidth may be continuous frequency domain resources or discontinuous frequency domain resources.

[0108] Optionally, the second channel or signal refers to a channel signal occupying a second bandwidth on a second symbol and a third bandwidth on a first symbol, and may include channels or signals having the same bandwidth characteristics, or include channels or signals of a certain category, wherein the granularity of the category division may be determined according to the specific circumstances, and the embodiments of the present application are not limited to this.

[0109] Optionally, when M is greater than 1, the width and / or resource position of the second bandwidth occupied by sending the second channel or signal on each second symbol may be different from the width and / or resource position of the second bandwidth occupied by sending the second channel or signal on at least one other second symbol.

[0110] Of course, the width and / or resource position of the second bandwidth occupied by sending the second channel or signal on the M second symbols may be the same.

[0111] Optionally, when S is greater than 1, the width and / or resource position of the third bandwidth occupied by the second channel or signal on each of the S first symbols may be different from the width and / or resource position of the third bandwidth occupied by the second channel or signal on at least one other first symbol.

[0112] Of course, the width and / or resource position of the third bandwidth occupied by sending the second channel or signal on the S first symbols may be the same.

[0113] Optionally, S is less than or equal to N.

[0114] If the first channel or signal includes PSS and SSS, the second channel or signal is PBCH, and N is equal to 2, then S is less than N, which means that only symbols occupied by PSS or only symbols occupied by SSS are used to transmit PBCH.

[0115] Optionally, the second bandwidth is equal to a bandwidth occupied by an integer number of PRBs.

[0116] Optionally, the second bandwidth is less than the bandwidth occupied by 24 PRBs, for example, equal to the bandwidth occupied by 18 PRBs. Of course, it can also be other values, for example, equal to the bandwidth occupied by 20, 16, etc. PRBs.

[0117] Optionally, the third bandwidth is equal to a bandwidth occupied by an integer number of PRBs.

[0118] Optionally, the third bandwidth is equal to the bandwidth occupied by 6 PRBs. Of course, it can also be other values, for example, equal to the bandwidth occupied by 5, 4, etc. PRBs.

[0119] Optionally, in an embodiment of the present application, the second bandwidth occupied by sending the second channel or signal may include guard subcarrier spacing on both sides.

[0120] Optionally, in an embodiment of the present application, the third bandwidth occupied by sending the second channel or signal may include guard subcarrier spacing on both sides.

[0121] In 230, the terminal device obtains, on N first symbols, a first channel or signal included in a synchronization signal block sent by a network device on a first bandwidth.

[0122] Specifically, the terminal device can perform blind detection on N first symbols to obtain the first channel or signal, for example, PSS and SSS, sent by the network device from the first bandwidth.

[0123] In 240, the terminal device obtains the second channel or signal included in the synchronization signal block sent by the network device on the M second symbols from the second bandwidth, and on the S first symbols among the N first symbols from the third bandwidth.

[0124] Therefore, after acquiring the first channel or signal and the second channel or signal, the terminal device can obtain the cell identifier (Identifier, ID), perform time and frequency synchronization, obtain physical broadcast channel (Physical Broadcasting Channel, PBCH) information, or perform RRM measurement based on the SSS and PBCH demodulation reference signal (Demodulation Reference Signal, DMRS).

[0125] Optionally, the network device may send multiple SS Blocks, and the multiple SS Blocks may form a synchronization signal cluster set (Synchronisation Signal burts set, SS burst set). The multiple SS Blocks may be sent using multiple transmission beams respectively, and the transmission beam of each SS Block is different from the transmission beams of other SS Blocks.

[0126] Optionally, a sum of the first bandwidth and the third bandwidth is equal to or less than the second bandwidth.

[0127] For example, the second bandwidth is X and the first bandwidth is Y, then the third bandwidth may be less than or equal to XY, that is, on N first symbols, the bandwidth Y for transmitting the first channel or signal, on S of the N first symbols, the bandwidth for transmitting the second channel or signal is less than or equal to XY, and on the second symbol, the bandwidth for transmitting the second channel or signal is X.

[0128] When S is less than N, on the other symbols among the N first symbols except the S first symbols, the remaining XY bandwidth can 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.

[0129] Optionally, the frequency domain resource position occupied by the first bandwidth and the frequency domain resource position occupied by the third bandwidth are respectively subsets of the frequency domain resource position occupied by the second bandwidth. At this time, optionally, the center frequency point of the second bandwidth can be called the center frequency point of the synchronization signal block.

[0130] The frequency domain resource positions occupied by the first bandwidth and the frequency domain resource positions occupied by the third bandwidth may be respectively equal to the frequency domain resource positions occupied by the second bandwidth, or may also be subsets of the frequency domain resource positions occupied by the second bandwidth.

[0131] Optionally, the center frequency of the first bandwidth is equal to the center frequency of the second bandwidth. In this case, the frequency domain resource position of the third bandwidth may be located on both sides of the frequency domain resource position of the first bandwidth. In this case, optionally, the sum of the bandwidths of the first bandwidth and the third bandwidth is equal to or less than the second bandwidth.

[0132] For example, assuming that 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. Within the SS block, there is a remaining bandwidth of (XY) / 2 bandwidth on both sides of the symbols for transmitting PSS and SSS. Except for symbols that only transmit PBCH, the remaining bandwidth on both sides of the PSS / SSS symbols is used to transmit PBCH.

[0133] For example, Figure 3 As shown, in the SS block, the bandwidth of the PBCH in the symbol that transmits only the PBCH is 18 PRBs, while the bandwidth occupied by the PSS and SSS is 12 PRBs each, and the center frequency of the 12 PRBs occupied by the PSS and SSS is the center frequency of the SS block, then there are 3 PRBs remaining on both sides of the PSS and 3 PRBs remaining on both sides of the SSS; these remaining PRBs can all be used to transmit the PBCH.

[0134] It should be understood that when the center frequency of the first bandwidth is equal to the center frequency of the second bandwidth, the frequency domain resource position of the third bandwidth may also be located on one side of the frequency domain resource position of the first bandwidth, and the other side may transmit channels or signals other than the first channel or signal and other than the second channel or signal, or may not transmit any channels or signals.

[0135] Optionally, 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. In this case, the frequency range of the third bandwidth is lower than the frequency range of the first bandwidth.

[0136] At this time, optionally, 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.

[0137] For example, assuming that 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. In the SS block, the remaining bandwidth of the (XY) bandwidth on one side of the symbols for transmitting PSS and SSS is used to transmit PBCH, except for the symbols for transmitting only PBCH, the remaining bandwidth on one side of the symbols for transmitting PSS and SSS is used to transmit PBCH.

[0138] like Figure 4 As shown, in the SS block, the bandwidth of PBCH in the symbol that only transmits PBCH is 18 PRBs, while the bandwidth occupied by PSS / SSS is 12 PRBs (including the protection subcarriers on both sides of PSS and SSS). In the symbols that transmit PSS and SSS, the 12 PRBs occupied by PSS and SSS are located in the high frequency range of the SS block, and there are 6 PRBs remaining in the low frequency range of the SS block. These remaining PRBs are all used to transmit PBCH.

[0139] Optionally, the frequency domain resource position of the first bandwidth is located within a low frequency range of the second bandwidth; and the frequency domain resource position of the third bandwidth is located within a high frequency range of the second bandwidth.

[0140] For example, assuming that 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. In the SS block, the remaining bandwidth of the (XY) bandwidth on one side of the symbols for transmitting PSS and SSS is used to transmit PBCH, except for the symbols for transmitting only PBCH, the remaining bandwidth on one side of the symbols for transmitting PSS and SSS is used to transmit PBCH.

[0141] like Figure 5 As shown, in the SS block, the bandwidth of PBCH in the symbol that only transmits PBCH is 18 PRBs, while the bandwidth occupied by PSS / SSS is 12 PRBs (including the protection subcarriers on both sides of PSS and SSS). In the symbols that transmit PSS and SSS, the 12 PRBs occupied by PSS and SSS are located in the low-frequency range of the SS block, and there are 6 PRBs remaining in the high-frequency range of the SS block. These remaining PRBs are all used to transmit PBCH.

[0142] Optionally, the network device maps the second channel or signal in a frequency domain first and time domain second manner, starting from the first symbol among the N first symbols and the M second symbols, and in a sequence of the N first symbols and the M second symbols in the time domain, first using low-frequency domain resources and then using high-frequency domain resources, wherein the bandwidth mapped on the first symbol is the third bandwidth, and the bandwidth mapped on the second symbol is the second bandwidth; the network device sends the mapped second channel or signal to the terminal device. Correspondingly, the terminal device demaps the second channel or signal in a frequency domain first and time domain second manner, starting from the first symbol among the N first symbols and the M second symbols, and in a sequence of the N first symbols and the M second symbols in the time domain, first using low-frequency domain resources and then using high-frequency domain resources, wherein the bandwidth demapped on the first symbol is the third bandwidth, and the bandwidth demapped on the second symbol is the second bandwidth.

[0143] For example, Figure 6 As shown, PBCH mapping is performed on the aforementioned frequency band that can transmit PBCH in a manner of first mapping in the frequency domain and then in the time domain.

[0144] For example, Figure 6 For example, PBCH can be mapped in the frequency domain first and then in the time domain (starting from the first symbol, low frequency domain bandwidth first, then high frequency domain bandwidth; and then the subsequent symbols are mapped in the same way), that is, according to Figure 6 The mapping is performed in the order of PBCH1-PBCH2-PBCH3-PBCH4- PBCH5-PBCH6 bandwidths, and in each part of the bandwidth, it is also mapped in the order from the low point in the frequency domain to the high point in the frequency domain.

[0145] It should be understood that in the embodiments of the present application, mapping may be performed in the time domain first and then in the frequency domain, or, when performing frequency domain mapping, mapping may be performed in the high frequency first and then in the low frequency.

[0146] When the terminal device searches for a cell on a frequency band, the value of the synchronization channel grid for the cell search is related to the bandwidth of the terminal and the bandwidth occupied by the SS block. The larger the bandwidth occupied by the SS block, the smaller the value of the synchronization channel grid for the cell search.

[0147] Therefore, in an embodiment of the present application, the second channel or signal can be transmitted on the symbol of the first channel or signal, and the bandwidth occupied by the synchronization signal block can be reduced overall, thereby reducing the number of initial searches without significantly reducing the transmission resources of the second channel or signal, thereby reducing or avoiding the impact of reducing the bandwidth of the synchronization signal block on the transmission performance of the second channel or signal, thereby improving communication performance.

[0148] For example, assuming that the first channel or signal includes PSS and SSS, and the second channel or signal is PBCH, in a symbol in the time domain, the sequence lengths of PSS and SSS are both 127, which requires occupying 127 REs of 12 PRBs, while the PBCH channel requires occupying 288 REs of 24 PRBs. Figure 7 As shown, PSS and SSS are transmitted on the first and third symbols respectively, and PBCH is transmitted only on the second and fourth symbols. Then the bandwidth occupied by SS Block is the bandwidth occupied by 24 PRBs, and the PBCH transmitted on two symbols occupies a total of 288*2=576 REs. Figure 3-6 As shown, 6 PRBs on the first and third symbols are occupied to transmit the PBCH, and the bandwidth of the SS Block is 18 PRBs. Therefore, on the basis of reducing the bandwidth of the SS Block, it is possible to avoid reducing the resources occupied by the PBCH (that is, the PBCH still occupies a total of 576 REs), thereby improving the communication performance.

[0149] It should be understood that although the above text 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. The first channel or signal and the second channel or signal may not be the channels or signals included in the synchronization signal block. For example, the first channel or signal is a physical downlink control channel (Physical Downlink Control Channel, PDCCH), the second channel or signal is a physical downlink shared channel (Physical Downlink Shared Channel, PDSCH), or the first channel or signal and the second channel or signal are other channels or signals.

[0150] Figure 8 is a schematic block diagram of a network device 300 according to an embodiment of the present application. Figure 8 As shown, the network device 300 includes a first transmission unit 310 and a second transmission unit 320; the first transmission unit 310 is used to: occupy a first bandwidth on N first symbols, and send a first channel or signal included in a synchronization signal block to a terminal device, wherein N is an integer greater than or equal to 1; the second transmission unit 320 is used to: occupy a second bandwidth on M second symbols, and occupy a third bandwidth on S first symbols among the N first symbols, and send a second channel or signal included in the synchronization signal block to the terminal device, wherein 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.

[0151] It should be understood that the network device 300 may correspond to the network device in the method 200 and may implement the corresponding operations implemented by the network device in the method 200. For the sake of brevity, it will not be described in detail here.

[0152] Fig. 9 4 is a schematic block diagram of a terminal device 400 according to an embodiment of the present application. Fig. 9 As shown, the terminal device 400 includes an acquisition unit 410, and the acquisition unit 410 is used to: acquire the second channel or signal included in the synchronization signal block sent by the network device on M second symbols from the second bandwidth, and on S first symbols among the N first symbols from the third bandwidth, wherein, on the N first symbols, on the first bandwidth, the network device sends the first channel or signal included in the synchronization signal block; wherein the frequency domain resource positions of the third bandwidth and the first bandwidth do not overlap with each other, and the M, the N and the S are integers greater than or equal to 1.

[0153] Optionally, the acquisition unit 410 may also perform the operation in 230 to acquire the first channel or signal.

[0154] 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, it will not be repeated here.

[0155] Fig.10 It is a schematic structural diagram of the system chip 500 according to an embodiment of the present application. Fig.10 The system chip 500 includes an input interface 501 , an output interface 502 , and the processor 503 and the memory 504 can be connected via an internal communication connection line. The processor 503 is used to execute the code in the memory 504 .

[0156] Optionally, when the code is executed, the processor 503 implements the method executed by the network device in the method embodiment. For the sake of brevity, it will not be described in detail here.

[0157] Optionally, when the code is executed, the processor 503 implements the method executed by the terminal device in the method embodiment. For the sake of brevity, it will not be described in detail here.

[0158] Fig.11 is a schematic block diagram of a communication device 600 according to an embodiment of the present application. Fig.11 As shown, the communication device 600 includes a processor 610 and a memory 620. The memory 620 may store program codes, and the processor 610 may execute the program codes stored in the memory 620.

[0159] Alternatively, if Fig.11 As shown, the communication device 600 may include a transceiver 630, and the processor 610 may control the transceiver 630 to communicate externally.

[0160] Optionally, the processor 610 may call program codes stored in the memory 620 to execute corresponding operations of the network device in the method embodiment, which will not be described in detail here for the sake of brevity.

[0161] Optionally, the processor 610 may call program codes stored in the memory 620 to execute corresponding operations of the terminal device in the method embodiment, which will not be described in detail here for the sake of brevity.

[0162] It should be understood that the processor of the embodiment of the present application may be an integrated circuit chip with signal processing capabilities. In the implementation process, each step of the above method embodiment can be completed by an integrated logic circuit of hardware in the processor or an instruction in the form of software. The above processor may be a general-purpose processor, a digital signal processor (Digital Signal Processor, DSP), an application-specific integrated circuit (Application Specific Integrated Circuit, ASIC), a field programmable gate array (Field Programmable Gate Array, FPGA) or other programmable logic devices, discrete gates or transistor logic devices, discrete hardware components. The methods, steps and logic block diagrams disclosed in the embodiments of the present application can be implemented or executed. The general-purpose processor may be a microprocessor or the processor may also be any conventional processor, etc. The steps of the method disclosed in the embodiment of the present application can be directly embodied as a hardware decoding processor to be executed, or the hardware and software modules in the decoding processor are combined and executed. The software module may be located in a mature storage medium in the 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 completes the steps of the above method in combination with its hardware.

[0163] It can be understood that the memory in the embodiments of the present application can be a volatile memory or a non-volatile memory, or can include both volatile and non-volatile memories. Among them, the non-volatile memory can 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 can be a random access memory (RAM), which is used as an external cache. By way of example and not limitation, many forms of RAM are available, such as static random access memory (SRAM), dynamic random access memory (DRAM), synchronous dynamic random access memory (SDRAM), double data rate synchronous dynamic random access memory (DDR SDRAM), enhanced synchronous dynamic random access memory (ESDRAM), synchronous link dynamic random access memory (SLDRAM), and direct RAM bus random access memory (DR RAM). It should be noted that the memory of the systems and methods described herein is intended to include, but is not limited to, these and any other suitable types of memory.

[0164] Those of ordinary skill in the art will appreciate that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Professional and technical personnel can use different methods to implement the described functions for each specific application, but such implementation should not be considered to be beyond the scope of this application.

[0165] Those skilled in the art can clearly understand that, for the convenience and brevity of description, the specific working processes of the systems, devices and units described above can refer to the corresponding processes in the aforementioned method embodiments and will not be repeated here.

[0166] In the several embodiments provided in 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 only schematic. For example, the division of the units is only a logical function division. There may be other division methods in actual implementation, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or units, which can be electrical, mechanical or other forms.

[0167] The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0168] In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.

[0169] If the functions are implemented in the form of software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present application can be essentially or partly embodied in the form of a software product that contributes to the prior art. The computer software product is stored in a storage medium and includes several instructions for a computer device (which can be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods described in each embodiment of the present application. The aforementioned storage media include: U disk, mobile hard disk, read-only memory (ROM), random access memory (RAM), disk or optical disk, and other media that can store program codes.

[0170] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

1. A wireless communication method, characterized in that: include: The network device occupies the first bandwidth on N first symbols and sends the first channel or signal included in the synchronization signal block to the terminal device, wherein N is an integer greater than or equal to 1; The network device occupies a second bandwidth on M second symbols and occupies a third bandwidth on S first symbols among the N first symbols, and sends a second channel or signal included in the synchronization signal block to the terminal device, wherein the frequency domain resource positions of the first bandwidth and the third bandwidth do not overlap with each other, and the M and the S are integers greater than or equal to 1, The second bandwidth is smaller than a bandwidth occupied by 24 PRBs.

2. The method according to claim 1, characterized in that The first channel or signal comprises a primary synchronization signal PSS and / or a secondary synchronization signal SSS.

3. The method according to claim 2, characterized in that The first channel or signal includes a PSS and an SSS, and the first symbols occupied by the PSS and the SSS are different.

4. The method according to claim 1, characterized in that The second channel or signal comprises a Physical Broadcast Channel (PBCH).

5. The method according to any one of claims 1 to 4, characterized in that A sum of the first bandwidth and the third bandwidth is equal to or smaller than the second bandwidth.

6. The method according to any one of claims 1 to 4, characterized in that The frequency domain resource positions occupied by the first bandwidth and the frequency domain resource positions occupied by the third bandwidth are respectively subsets of the frequency domain resource positions occupied by the second bandwidth.

7. The method according to any one of claims 1 to 4, characterized in that The center frequency point of the first bandwidth is equal to the center frequency point of the second bandwidth.

8. The method according to any one of claims 1 to 4, characterized in that The frequency domain resource positions of the third bandwidth are located on both sides of the frequency domain resource positions of the first bandwidth.

9. The method according to any one of claims 1 to 4, characterized in that 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 in the high frequency range of the second bandwidth.

10. The method according to any one of claims 1 to 4, characterized in that 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 in the low frequency range of the second bandwidth.

11. The method according to any one of claims 1 to 4, characterized in that The first bandwidth, the second bandwidth and / or the third bandwidth are respectively equal to bandwidths occupied by an integer number of physical resource blocks (PRBs).

12. The method according to any one of claims 1 to 4, characterized in that The second bandwidth is equal to a bandwidth occupied by 16, 18 or 20 PRBs.

13. The method according to any one of claims 1 to 4, characterized in that The first bandwidth is equal to a bandwidth occupied by 12 PRBs.

14. The method according to any one of claims 1 to 4, characterized in that The S is equal to the N.

15. The method according to any one of claims 1 to 4, characterized in that N is equal to 2, and M is equal to 2; The N first symbols and the M second symbols are arranged in the order of precedence in the time domain: the first symbol, the second symbol, the first symbol and the second symbol.

16. The method according to any one of claims 1 to 4, characterized in that The network device occupies a second bandwidth on the M second symbols, occupies a third bandwidth on the S first symbols among the N first symbols, and sends the second channel or signal included in the synchronization signal block to the terminal device, including: The network device maps the second channel or signal in a frequency domain first and then time domain manner, starting from the first symbol among the N first symbols and the M second symbols, and in a time domain order, first with low frequency domain resources and then with high frequency domain resources, wherein the bandwidth mapped on the first symbol is the third bandwidth, and the bandwidth mapped on the second symbol is the second bandwidth; The network device sends the mapped second channel or signal to the terminal device.

17. A wireless communication method, characterized in that: include: The terminal device obtains, on the N first symbols and on the first bandwidth, a first channel or signal included in a synchronization signal block sent by the network device; The terminal device acquires the second channel or signal included in the synchronization signal block from the second bandwidth on the M second symbols and from the third bandwidth on the S first symbols among the N first symbols; The frequency domain resource positions of the third bandwidth and the first bandwidth do not overlap with each other, and the M, the N, and the S are integers greater than or equal to 1. The second bandwidth is smaller than a bandwidth occupied by 24 PRBs.

18. The method according to claim 17, characterized in that The first channel or signal comprises a primary synchronization signal PSS and / or a secondary synchronization signal SSS.

19. The method according to claim 18, characterized in that The first channel or signal includes a PSS and an SSS, and the first symbols occupied by the PSS and the SSS are different.

20. The method according to claim 17, characterized in that The second channel or signal comprises a Physical Broadcast Channel (PBCH).

21. The method according to any one of claims 17 to 20, characterized in that A sum of the first bandwidth and the third bandwidth is equal to or smaller than the second bandwidth.

22. The method according to any one of claims 17 to 20, characterized in that The frequency domain resource positions occupied by the first bandwidth and the frequency domain resource positions occupied by the third bandwidth are respectively subsets of the frequency domain resource positions occupied by the second bandwidth.

23. The method according to any one of claims 17 to 20, characterized in that The center frequency point of the first bandwidth is equal to the center frequency point of the second bandwidth.

24. The method according to any one of claims 17 to 20, characterized in that The frequency domain resource positions of the third bandwidth are located on both sides of the frequency domain resource positions of the first bandwidth.

25. The method according to any one of claims 17 to 20, characterized in that 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 in the high frequency range of the second bandwidth.

26. The method according to any one of claims 17 to 20, characterized in that 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 in the low frequency range of the second bandwidth.

27. The method according to any one of claims 17 to 20, characterized in that The first bandwidth, the second bandwidth and / or the third bandwidth are respectively equal to bandwidths occupied by an integer number of physical resource blocks (PRBs).

28. The method according to any one of claims 17 to 20, characterized in that The second bandwidth is equal to a bandwidth occupied by 16, 18 or 20 physical resource blocks (PRBs).

29. The method according to any one of claims 17 to 20, characterized in that The first bandwidth is equal to a bandwidth occupied by 12 PRBs.

30. The method according to any one of claims 17 to 20, characterized in that The S is equal to the N.

31. The method according to any one of claims 17 to 20, characterized in that N is equal to 2, and M is equal to 2; The N first symbols and the M second symbols are arranged in the order of precedence in the time domain: the first symbol, the second symbol, the first symbol and the second symbol.

32. The method according to any one of claims 17 to 20, characterized in that The terminal device acquires, on the M second symbols, from the second bandwidth, and on the S first symbols among the N first symbols, from the third bandwidth, the second channel or signal included in the synchronization signal block, including: The terminal device demaps the second channel or signal in a frequency domain-first then time domain manner, starting from the first symbol among the N first symbols and the M second symbols, and demaps the second channel or signal using low-frequency domain resources first and then high-frequency domain resources according to the order of the N first symbols and the M second symbols in the time domain, wherein the demapped bandwidth on the first symbol is the third bandwidth, and the demapped bandwidth on the second symbol is the second bandwidth.

33. A network device, characterized in that: comprising a first transmission unit and a second transmission unit; The first transmission unit is used to: occupy a first bandwidth on N first symbols and send a first channel or signal included in the synchronization signal block to the terminal device, wherein N is an integer greater than or equal to 1; The second transmission unit is used to: occupy a second bandwidth on M second symbols, and occupy a third bandwidth on S first symbols among the N first symbols, to send a second channel or signal included in the synchronization signal block to the terminal device, wherein the frequency domain resource positions of the first bandwidth and the third bandwidth do not overlap with each other, and the M and the S are integers greater than or equal to 1, The second bandwidth is smaller than a bandwidth occupied by 24 PRBs.

34. The network device according to claim 33, characterized in that: The first channel or signal comprises a primary synchronization signal PSS and / or a secondary synchronization signal SSS.

35. The network device according to claim 34, characterized in that: The first channel or signal includes a PSS and an SSS, and the first symbols occupied by the PSS and the SSS are different.

36. The network device according to claim 33, characterized in that: The second channel or signal comprises a Physical Broadcast Channel (PBCH).

37. The network device according to any one of claims 33 to 36, characterized in that: A sum of the first bandwidth and the third bandwidth is equal to or smaller than the second bandwidth.

38. The network device according to any one of claims 33 to 36, characterized in that: The frequency domain resource positions occupied by the first bandwidth and the frequency domain resource positions occupied by the third bandwidth are respectively subsets of the frequency domain resource positions occupied by the second bandwidth.

39. The network device according to any one of claims 33 to 36, characterized in that: The center frequency point of the first bandwidth is equal to the center frequency point of the second bandwidth.

40. The network device according to any one of claims 33 to 36, characterized in that: The frequency domain resource positions of the third bandwidth are located on both sides of the frequency domain resource positions of the first bandwidth.

41. The network device according to any one of claims 33 to 36, characterized in that: 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 in the high frequency range of the second bandwidth.

42. The network device according to any one of claims 33 to 36, characterized in that: 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 in the low frequency range of the second bandwidth.

43. The network device according to any one of claims 33 to 36, characterized in that: The first bandwidth, the second bandwidth and / or the third bandwidth are respectively equal to bandwidths occupied by an integer number of physical resource blocks (PRBs).

44. The network device according to any one of claims 33 to 36, characterized in that: The second bandwidth is equal to a bandwidth occupied by 16, 18 or 20 PRBs.

45. The network device according to any one of claims 33 to 36, characterized in that: The first bandwidth is equal to a bandwidth occupied by 12 PRBs.

46. ​​The network device according to any one of claims 33 to 36, characterized in that: The S is equal to the N.

47. The network device according to any one of claims 33 to 36, characterized in that: N is equal to 2, and M is equal to 2; The N first symbols and the M second symbols are arranged in the order of precedence in the time domain: the first symbol, the second symbol, the first symbol and the second symbol.

48. The network device according to any one of claims 33 to 36, characterized in that: The second transmission unit is further configured to: Mapping the second channel or signal in a frequency domain first and time domain second manner, starting from the first symbol among the N first symbols and the M second symbols, and in a time domain order, first using low frequency domain resources and then using high frequency domain resources, wherein the bandwidth mapped on the first symbol is the third bandwidth, and the bandwidth mapped on the second symbol is the second bandwidth; Send the mapped second channel or signal to the terminal device.

49. A terminal device, characterized in that: including acquisition units; The acquisition unit is used to: acquire, on N first symbols, a first channel or signal included in a synchronization signal block sent by a network device from a first bandwidth; acquire, on M second symbols, a second channel or signal included in the synchronization signal block from a second bandwidth, and on S first symbols among the N first symbols, a third bandwidth; The frequency domain resource positions of the third bandwidth and the first bandwidth do not overlap with each other, and the M, the N, and the S are integers greater than or equal to 1. The second bandwidth is smaller than a bandwidth occupied by 24 PRBs.

50. The terminal device according to claim 49, characterized in that: The first channel or signal comprises a primary synchronization signal PSS and / or a secondary synchronization signal SSS.

51. The terminal device according to claim 50, characterized in that: The first channel or signal includes a PSS and an SSS, and the first symbols occupied by the PSS and the SSS are different.

52. The terminal device according to claim 50 or 51, characterized in that: The second channel or signal comprises a Physical Broadcast Channel (PBCH).

53. The terminal device according to any one of claims 49 to 51, characterized in that: A sum of the first bandwidth and the third bandwidth is equal to or smaller than the second bandwidth.

54. The terminal device according to claim 53, characterized in that: The second bandwidth is X, the first bandwidth is Y, and in other symbols except S first symbols among the N first symbols, the remaining bandwidth of XY does not transmit any channel or signal.

55. The terminal device according to any one of claims 49 to 51, characterized in that: The frequency domain resource positions occupied by the first bandwidth and the frequency domain resource positions occupied by the third bandwidth are respectively subsets of the frequency domain resource positions occupied by the second bandwidth.

56. The terminal device according to claim 55, characterized in that: The center frequency of the second bandwidth is the center frequency of the synchronization signal block.

57. The terminal device according to any one of claims 49 to 51, characterized in that: The center frequency point of the first bandwidth is equal to the center frequency point of the second bandwidth.

58. The terminal device according to any one of claims 49 to 51, characterized in that: The frequency domain resource positions of the third bandwidth are located on both sides of the frequency domain resource positions of the first bandwidth.

59. The terminal device according to any one of claims 49 to 51, characterized in that: 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 in the high frequency range of the second bandwidth.

60. The terminal device according to any one of claims 49 to 51, characterized in that: 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 in the low frequency range of the second bandwidth.

61. The terminal device according to any one of claims 49 to 51, characterized in that: The first bandwidth, the second bandwidth and / or the third bandwidth are respectively equal to bandwidths occupied by an integer number of physical resource blocks (PRBs).

62. The terminal device according to any one of claims 49 to 51, characterized in that: The second bandwidth is equal to a bandwidth occupied by 16, 18 or 20 physical resource blocks (PRBs).

63. The terminal device according to any one of claims 49 to 51, characterized in that: The first bandwidth is equal to a bandwidth occupied by 12 PRBs.

64. The terminal device according to any one of claims 49 to 51, characterized in that: The S is equal to the N.

65. The terminal device according to any one of claims 49 to 51, characterized in that: N is equal to 2, and M is equal to 2; The N first symbols and the M second symbols are arranged in the order of precedence in the time domain: the first symbol, the second symbol, the first symbol and the second symbol.

66. The terminal device according to any one of claims 49 to 51, characterized in that: The acquisition unit is further used for: In a frequency domain-first and time domain-later manner, starting from the first symbol among the N first symbols and the M second symbols, demapping the second channel or signal is performed using low-frequency domain resources first and then high-frequency domain resources according to the sequence of the N first symbols and the M second symbols in the time domain, wherein the demapped bandwidth on the first symbol is the third bandwidth, and the demapped bandwidth on the second symbol is the second bandwidth.

67. The terminal device according to claim 52, characterized in that: The PBCH includes a demodulation reference signal DMRS of the PBCH.

68. The terminal device according to any one of claims 49 to 51, characterized in that: The frequency domain resources occupied by the first bandwidth are continuous frequency domain resources.

69. The terminal device according to any one of claims 49 to 51, characterized in that: The width and / or resource position of the first bandwidth occupied by the first channel or signal sent on the N first symbols are the same.

70. The terminal device according to any one of claims 49 to 51, characterized in that: The frequency domain resources occupied by the second bandwidth are continuous frequency domain resources.

71. The terminal device according to any one of claims 49 to 51, characterized in that: The width and / or resource position of the second bandwidth occupied by the second channel or signal sent on the M second symbols are the same.

72. The terminal device according to claim 52, characterized in that: The sequence length of the PSS is 127, occupying 127 REs; The sequence length of the SSS is 127, occupying 127 REs; The PBCH channel occupies 576 REs in total.

73. A network device comprising: A processor, a memory and a transceiver, wherein the processor, the memory and the transceiver communicate with each other through an internal connection path; wherein, The memory is used to store program codes; The processor is configured to call the program code stored in the memory to cooperate with the transceiver to implement the method according to any one of claims 1 to 16.

74. A terminal device comprising: A processor, a memory and a transceiver, wherein the processor, the memory and the transceiver communicate with each other through an internal connection path; wherein, The memory is used to store program codes; The processor is used to call the program code stored in the memory to cooperate with the transceiver to implement the method according to any one of claims 17 to 32.

75. A computer-readable storage medium for storing a computer program, the computer program comprising instructions, which, when executed on a computer, cause the computer to execute the method according to any one of claims 1 to 16, or to execute the method according to any one of claims 17 to 32.

76. A computer program product comprising instructions, which, when executed on a computer, cause the computer to perform the method according to any one of claims 1 to 16, or to perform the method according to any one of claims 17 to 32.

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