Wireless communication method, network equipment and terminal equipment

Abstract

The embodiment of the invention provides a wireless communication method and equipment. The communication performance can be improved in the transmission aspect of SS Blocks. The method comprises: a network device occupying a first bandwidth on N first symbols and sending a first channel or signal included in a synchronization signal block to a terminal device, N being an integer greater than or equal to 1; and the network equipment occupies a second bandwidth on the M second symbols and occupies a third bandwidth on S first symbols in the N first symbols, and sends a second channel or signal included in the synchronization signal block to the terminal equipment, the frequency domain resource positions of the first bandwidth and the third bandwidth are not overlapped, and M and S are integers greater than or equal to 1.

Description

[0001] This application is a divisional application of Chinese Patent Application No. 201780092431.7, with the invention title of "Method, Network Device and Terminal Device for Wireless Communication", which enters the Chinese national phase from the PCT international patent application PCT / CN2017 / 105777 with the application date of October 11, 2017. Technical Field

[0002] This application relates to the field of communications, and more particularly, to a wireless communication method, network device and terminal device. Background Art

[0003] 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).

[0004] In a New Radio (NR) system, a network device may send multiple Synchronization Signal Blocks (SS blocks) to a terminal device. The terminal device may search for the SS blocks within the system bandwidth to obtain the cell identifier (ID), perform time-frequency synchronization, obtain Physical Broadcasting Channel (PBCH) information, and perform RRM measurements based on the SSS and the Demodulation Reference Signal (DMRS) of the PBCH.

[0005] In the new radio system, the requirements for communication performance are relatively high. Therefore, how to improve communication performance in the transmission of SS Blocks is an urgent problem to be solved. Summary of the Invention

[0006] Embodiments of this application provide a wireless communication method and device, which can improve communication performance in the transmission of SS Blocks.

[0007] In a first aspect, a wireless communication method is provided, including:

[0008] The network device occupies a first bandwidth on N first symbols and sends 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;

[0009] The network device occupies a second bandwidth on M second symbols and 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, where 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.

[0010] Therefore, in the embodiments of the present application, a second channel or signal can be transmitted on the symbols for transmitting the first channel or signal, which can generally reduce the bandwidth occupied by the synchronization signal block, thereby reducing the number of initial searches while not significantly reducing the transmission resources of the second channel or signal. Therefore, the influence on the transmission performance of the second channel or signal caused by reducing the bandwidth of the synchronization signal block is reduced or avoided, and thus the communication performance can be improved.

[0011] 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.

[0012] In combination with 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 symbols occupied by PSS and SSS are different.

[0013] In combination with 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.

[0014] In combination with 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 equal to or less than the second bandwidth.

[0015] In combination with the first aspect or any of the above possible implementation manners, in another possible implementation manner of the first aspect, the frequency-domain resource positions occupied by the first bandwidth and the third bandwidth are respectively subsets of the frequency-domain resource positions occupied by the second bandwidth.

[0016] In combination with 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.

[0017] Combined with 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.

[0018] Combined with 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

[0019] the frequency-domain resource position of the third bandwidth is located within the high-frequency range of the second bandwidth.

[0020] Combined with 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

[0021] the frequency-domain resource position of the third bandwidth is located within the low-frequency range of the second bandwidth.

[0022] Combined with the first aspect or any of the above possible implementation manners, in another possible implementation manner of the first aspect, the first bandwidth, the second bandwidth, and / or the third bandwidth are respectively equal to the bandwidth occupied by an integer number of physical resource blocks (PRBs).

[0023] Combined with the first aspect or any of the above possible implementation manners, in another possible implementation manner of the first aspect, the second bandwidth is less than the bandwidth occupied by 24 PRBs.

[0024] Combined with the first aspect or any of the above possible implementation manners, in another possible implementation manner of the first aspect, the second bandwidth is equal to the bandwidth occupied by 18 PRBs.

[0025] Combined with the first aspect or any of the above possible implementation manners, in another possible implementation manner of the first aspect, the first bandwidth is equal to the bandwidth occupied by 12 PRBs.

[0026] Combined with the first aspect or any of the above possible implementation manners, in another possible implementation manner of the first aspect, S is equal to N.

[0027] Combined with the first aspect or any of the above possible implementation manners, in another possible implementation manner of the first aspect, N is equal to 2, and M is equal to 2;

[0028] The sorting of the N first symbols and the M second symbols in the time domain in sequence is: the first symbol, the second symbol, the first symbol, and the second symbol.

[0029] Combined with the first aspect or any of the above possible implementation manners, in another possible implementation manner of the first aspect, when the network device sends the second channel or signal included in the synchronization signal block on M second symbols, occupying a second bandwidth, and on S first symbols among N first symbols, occupying a third bandwidth, it includes:

[0030] The network device maps the second channel or signal in the order of frequency domain first and then time domain, starting from the first symbol among the N first symbols and M second symbols, in the time domain order of the N first symbols and M second symbols, and from low frequency domain resources to high frequency domain resources. Among them, the bandwidth mapped on the first symbol is the third bandwidth, and the bandwidth mapped on the second symbol is the second bandwidth;

[0031] The network device sends the mapped second channel or signal to the terminal device.

[0032] In a second aspect, a wireless communication method is provided, including:

[0033] The terminal device obtains the first channel or signal included in the synchronization signal block sent by the network device on N first symbols from a first bandwidth;

[0034] The terminal device obtains the second channel or signal included in the synchronization signal block on M second symbols from a second bandwidth, and on S first symbols among the N first symbols from a third bandwidth;

[0035] Among them, the frequency domain resource positions of the third bandwidth and the first bandwidth do not overlap, and M, N, and S are integers greater than or equal to 1.

[0036] Therefore, in the embodiments of the present application, the second channel or signal can be transmitted on the symbols for transmitting the first channel or signal, which can generally reduce the bandwidth occupied by the synchronization signal block, thereby reducing the number of initial searches while not significantly reducing the transmission resources of the second channel or signal. Therefore, the influence on the transmission performance of the second channel or signal caused by reducing the bandwidth of the synchronization signal block is reduced or avoided, thereby improving the communication performance.

[0037] Combined 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.

[0038] Combined with 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 PSS and SSS, and the first symbols occupied by PSS and SSS are different.

[0039] Combined with 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 a Physical Broadcast Channel (PBCH).

[0040] Combined with 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 equal to or less than the second bandwidth.

[0041] Combined with the second aspect or any of the above possible implementation manners, in another possible implementation manner of the second aspect, the frequency-domain resource positions occupied by the first bandwidth and the third bandwidth are respectively subsets of the frequency-domain resource positions occupied by the second bandwidth.

[0042] Combined with the second aspect or any of the above possible implementation manners, in another possible implementation manner of the second aspect, the central frequency point of the first bandwidth is equal to the central frequency point of the second bandwidth.

[0043] Combined with 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.

[0044] Combined with 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

[0045] the frequency-domain resource position of the third bandwidth is located within the high-frequency range of the second bandwidth.

[0046] Combined with 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 high-frequency range of the second bandwidth; and

[0047] the frequency-domain resource position of the third bandwidth is located within the low-frequency range of the second bandwidth.

[0048] Combined with the second aspect or any of the above possible implementation manners, in another possible implementation manner of the second aspect, the first bandwidth, the second bandwidth, and / or the third bandwidth are respectively equal to the bandwidths occupied by an integer number of Physical Resource Blocks (PRBs).

[0049] Combined with the second aspect or any of the above possible implementation manners, in another possible implementation manner of the second aspect, the second bandwidth is less than the bandwidth occupied by 24 PRBs.

[0050] Combined with the second aspect or any of the above possible implementation manners, in another possible implementation manner of the second aspect, the second bandwidth is equal to the bandwidth occupied by 18 Physical Resource Blocks (PRBs).

[0051] Combined with the second aspect or any of the above possible implementation manners, in another possible implementation manner of the second aspect, the first bandwidth is equal to the bandwidth occupied by 12 PRBs.

[0052] Combined with the second aspect or any of the above possible implementation manners, in another possible implementation manner of the second aspect, S is equal to N.

[0053] Combined with the second aspect or any of the above possible implementation manners, in another possible implementation manner of the second aspect, N is equal to 2 and M is equal to 2;

[0054] The sequential order of the N first symbols and the M second symbols in the time domain is: the first symbol, the second symbol, the first symbol, and the second symbol.

[0055] Combined with the second aspect or any of the above possible implementation manners, in another possible implementation manner of the second aspect, the terminal device obtains the second channel or signal included in the synchronization signal block on the M second symbols from the second bandwidth and on S of the N first symbols from the third bandwidth, including:

[0056] The terminal device demaps the second channel or signal in the order of frequency domain first and then time domain, starting from the first symbol among the N first symbols and the M second symbols, and in the sequential order of the N first symbols and the M second symbols in the time domain, demapping the low-frequency domain resources first and then the high-frequency domain resources, where the bandwidth demapped on the first symbol is the third bandwidth and the bandwidth demapped on the second symbol is the second bandwidth.

[0057] In a third aspect, a network device is provided for performing the method in the first aspect or any possible implementation manner of the first aspect. Specifically, the network device includes functional modules for performing the method in the first aspect or any possible implementation manner of the first aspect.

[0058] In a fourth aspect, a terminal device is provided for performing the method in the second aspect or any possible implementation manner of the second aspect. Specifically, the terminal device includes functional modules for the method in the second aspect or any possible implementation manner of the second aspect.

[0059] In a fifth aspect, a network device is provided, including a processor, a memory, and a transceiver. The processor, the memory, and the transceiver communicate with each other through an internal connection path to transmit control and / or data signals, so that the network device performs the method in the first aspect or any possible implementation manner of the first aspect.

[0060] In a sixth aspect, a terminal device is provided, including a processor, a memory, and a transceiver. The processor, the memory, and the transceiver communicate with each other through an internal connection path to transmit control and / or data signals, so that the terminal device executes the method in the second aspect or any possible implementation manner of the second aspect.

[0061] In a seventh aspect, a computer-readable medium is provided for storing a computer program, where the computer program includes instructions for executing any of the above methods or any possible implementation manner.

[0062] In an eighth aspect, a computer program product including instructions is provided, which, when running on a computer, causes the computer to execute any of the above methods or any possible implementation manner. Description of the Drawings

[0063] To more clearly illustrate the technical solutions of the embodiments of the present application, the following will briefly introduce the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0064] Figure 1 is a schematic diagram of a wireless communication system according to an embodiment of the present application.

[0065] Figure 2 is a schematic flowchart of a wireless communication method according to an embodiment of the present application.

[0066] Figure 3 is a schematic diagram of the transmission mode of a synchronization signal block according to an embodiment of the present application.

[0067] Figure 4 is a schematic diagram of the transmission mode of a synchronization signal block according to an embodiment of the present application.

[0068] Figure 5 is a schematic diagram of the transmission mode of a synchronization signal block according to an embodiment of the present application.

[0069] Figure 6 is a schematic diagram of the transmission mode of a synchronization signal block according to an embodiment of the present application.

[0070] Figure 7 is a schematic diagram of the transmission mode of a synchronization signal block.

[0071] Figure 8 is a schematic block diagram of a network device according to an embodiment of the present application.

[0072] Figure 9It is a schematic block diagram of a terminal device according to an embodiment of the present application.

[0073] Figure 10 It is a schematic block diagram of a system-on-chip according to an embodiment of the present application.

[0074] Figure 11 It is a schematic block diagram of a communication device according to an embodiment of the present application. Detailed implementation manners

[0075] Next, the technical solutions in the embodiments of the present application will be described with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present application.

[0076] The technical solutions of the embodiments of the present application can be applied to various communication systems, such as: Global System of Mobile communication (abbreviated as "GSM") system, Code Division Multiple Access (abbreviated as "CDMA") system, Wideband Code Division Multiple Access (abbreviated as "WCDMA") system, General Packet Radio Service (abbreviated as "GPRS"), Long Term Evolution (abbreviated as "LTE") 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.

[0077] Figure 1FIG. 0 shows a wireless communication system 100 to which embodiments of the present application are 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 may provide communication coverage for a specific geographical area and may communicate with terminal devices (such as UEs) located within the coverage area. Optionally, the network device 100 may be a Base Transceiver Station (BTS) in a GSM system or a CDMA system, may also be a NodeB (NB) in a WCDMA system, may further be an evolved base station (Evolutional Node B, eNB or 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, 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 (PLMN), etc.

[0078] 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. 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 device, 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 capabilities, a computing device, or other processing devices 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.

[0079] Optionally, Device to Device (D2D) communication may be performed between the terminal devices 120.

[0080] Optionally, the 5G system or network may also be referred to as a New Radio (NR) system or network.

[0081] Figure 1Exemplarily, a network device and two terminal devices are shown. Optionally, the wireless communication system 100 may include multiple network devices, and the coverage range of each network device may include other numbers of terminal devices. The embodiments of the present application do not limit this.

[0082] Optionally, 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.

[0083] It should be understood that the terms "system" and "network" are often used interchangeably in this article. The term " / or" in this article is merely a description of the association relationship between associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist simultaneously, and B exists alone. In addition, the character " / " in this article generally represents an "or" relationship between the preceding and following associated objects.

[0084] Figure 2 is a schematic flowchart 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, but is not limited thereto. The method 200 includes at least some of the following content.

[0085] In 210, the network device sends a first channel or signal included in a synchronization signal block to the terminal device on N first symbols, occupying a first bandwidth, where N is an integer greater than or equal to 1.

[0086] Optionally, when N is greater than 1, the N first symbols may be N consecutive symbols or N non-consecutive symbols.

[0087] Optionally, the first channel or signal includes PSS and / or SSS.

[0088] Optionally, the first channel or signal includes PSS and SSS, and the first symbols occupied by the PSS and the SSS are different.

[0089] 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. The symbol occupied by sending the primary synchronization signal and the symbol occupied by sending the secondary synchronization signal may be separated by one symbol.

[0090] Optionally, the frequency domain resources occupied by the first bandwidth may be continuous frequency domain resources or discontinuous frequency domain resources.

[0091] Optionally, the first channel or signal refers to a channel or signal that occupies a first bandwidth on a first symbol, and may include channels or signals with the same bandwidth characteristics, or include a certain type of channels or signals. Herein, the granularity of the classification can be determined according to specific circumstances, and the embodiments of this 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.

[0092] Optionally, when N is greater than 1, the width and / or resource position of the first bandwidth occupied by the first channel or signal transmitted on each first symbol may be different from the width and / or resource position of the first bandwidth occupied by the first channel or signal transmitted on at least one other first symbol.

[0093] 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 transmit the primary synchronization signal, and the other symbol is used to transmit the secondary synchronization signal. The bandwidth and / or resource position occupied by transmitting the primary synchronization signal is different from the bandwidth and / or resource position occupied by transmitting the secondary synchronization signal.

[0094] Of course, the width and / or resource position of the first bandwidth occupied by transmitting the first channel or signal on N first symbols may be the same.

[0095] 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 transmit the primary synchronization signal, and the other symbol is used to transmit the secondary synchronization signal. The bandwidth and / or resource position occupied by transmitting the primary synchronization signal is equal to the bandwidth and / or resource position occupied by transmitting the secondary synchronization signal.

[0096] 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.

[0097] Optionally, in the embodiments of this application, the first bandwidth occupied by transmitting the first channel or signal may include the guard subcarrier intervals on both sides.

[0098] In 220, the network device transmits the second channel or signal included in the synchronization signal block to the terminal device on M second symbols, occupying a second bandwidth, and on S first symbols among the N first symbols, occupying a third bandwidth, where 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.

[0099] Optionally, the N first symbols and the M second symbols are arranged in an interleaved manner.

[0100] For example, N equals 2 and M equals 2; the sequential sorting of the N first symbols and the M second symbols in the time domain is as follows: the first symbol, the second symbol, the first symbol, and the second symbol.

[0101] Optionally, when M is greater than 1, the M second symbols can be M consecutive symbols or M non - consecutive symbols.

[0102] Optionally, the second channel or signal includes PBCH. Optionally, the PBCH mentioned in the embodiments of the present application may include the DMRS of PBCH.

[0103] Optionally, the first channel or signal includes PSS but not SSS, which means that PBCH can be transmitted only on the symbols transmitting PSS and not on the symbols transmitting SSS.

[0104] Alternatively, the first channel or signal includes SSS but not PSS, which means that PBCH can be transmitted only on the symbols transmitting SSS and not on the symbols transmitting PSS.

[0105] Alternatively, the first channel or signal includes both PSS and SSS, which means that PBCH can be transmitted on the symbols transmitting PSS and on the symbols transmitting SSS.

[0106] It should be understood that although many embodiments of the present application are described by taking the first channel or signal including PSS and / or SSS, and the second channel or signal including PBCH as examples, the embodiments of the present application are not limited thereto.

[0107] 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.

[0108] Optionally, the frequency - domain resources occupied by the second bandwidth can be continuous frequency - domain resources or discontinuous frequency - domain resources.

[0109] Optionally, the second channel or signal refers to a channel signal that occupies the second bandwidth on the second symbol and occupies the third bandwidth on the first symbol, and may include channels or signals with the same bandwidth characteristics, or include a certain type of channels or signals. Herein, the granularity of the type division can be determined according to specific circumstances, and the embodiments of the present application do not limit this.

[0110] Optionally, when M is greater than 1, the width and / or resource position of the second bandwidth occupied by the second channel or signal transmitted on each second symbol may be different from the width and / or resource position of the second bandwidth occupied by the second channel or signal transmitted on at least one other second symbol.

[0111] Of course, the width and / or resource position of the second bandwidth occupied by the second channel or signal transmitted on the M second symbols may be the same.

[0112] Optionally, when S is greater than 1, the width and / or resource position of the third bandwidth occupied by the second channel or signal transmitted 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 transmitted on at least one other first symbol.

[0113] Of course, the width and / or resource position of the third bandwidth occupied by the second channel or signal transmitted on the S first symbols may be the same.

[0114] Optionally, S is less than or equal to N.

[0115] Wherein, 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 being less than N means that only the symbols occupied by PSS or only SSS are used to transmit PBCH.

[0116] Optionally, the second bandwidth is equal to the bandwidth occupied by an integer number of PRBs.

[0117] Optionally, the second bandwidth is less than the bandwidth occupied by 24 PRBs. For example, it is equal to the bandwidth occupied by 18 PRBs. Of course, it can also be other values, such as equal to 20, 16, etc. PRBs occupied bandwidth.

[0118] Optionally, the third bandwidth is equal to the bandwidth occupied by an integer number of PRBs.

[0119] Optionally, the third bandwidth is equal to the bandwidth occupied by 6 PRBs. Of course, it can also be other values, such as equal to 5, 4, etc. PRBs occupied bandwidth.

[0120] Optionally, in the embodiments of the present application, the second bandwidth occupied by the second channel or signal transmitted may include guard subcarrier intervals on both sides.

[0121] Optionally, in the embodiments of the present application, the third bandwidth occupied by the second channel or signal transmitted may include guard subcarrier intervals on both sides.

[0122] In 230, the terminal device obtains, on N first symbols, the first channel or signal included in the synchronization signal block transmitted by the network device on the first bandwidth.

[0123] Specifically, the terminal device can perform blind detection on N first symbols to obtain the first channel or signal sent by the network device on the first bandwidth, such as PSS and SSS.

[0124] In 240, the terminal device obtains 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.

[0125] Thus, after the terminal device obtains the first channel or signal and the second channel or signal, it can obtain the cell identifier (ID), perform time-frequency synchronization, obtain the Physical Broadcasting Channel (PBCH) information, or perform RRM measurements based on the Demodulation Reference Signal (DMRS) of the SSS and PBCH, etc.

[0126] Optionally, the network device can send multiple SS Blocks, and the multiple SS Blocks can form a Synchronisation Signal Bursts Set (SS burst set). Among them, the multiple SS Blocks can be sent using multiple transmission beams respectively, and the transmission beam of each SS Block is different from that of other SS Blocks.

[0127] Optionally, the sum of the bandwidths of the first bandwidth and the third bandwidth is equal to or less than the second bandwidth.

[0128] For example, if the second bandwidth is X and the first bandwidth is Y, then the third bandwidth can be less than or equal to X - Y. That is, on N first symbols, the bandwidth Y for transmitting the first channel or signal, on S symbols among the N first symbols, the bandwidth for transmitting the second channel or signal is less than or equal to X - Y, and on the second symbols, the bandwidth for transmitting the second channel or signal is X.

[0129] Among them, when S is less than N, on the other symbols among the N first symbols except for the S first symbols, the remaining bandwidth of X - Y can be used to transmit other channels or signals other than the first channel or signal and the second channel or signal, or no channels or signals can be transmitted.

[0130] Optionally, the frequency-domain resource positions occupied by the first bandwidth and 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.

[0131] Among them, the frequency-domain resource positions occupied by the first bandwidth and the third bandwidth can be respectively equal to the frequency-domain resource position occupied by the second bandwidth, or can also be respectively subsets of the frequency-domain resource position occupied by the second bandwidth.

[0132] Optionally, 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 position of the third bandwidth can be located on both sides of the frequency-domain resource position of the first bandwidth. Optionally, the sum of the bandwidths of the first bandwidth and the third bandwidth is equal to or less than the second bandwidth.

[0133] For example, assume that the first channel or signal includes PSS and SSS, the second channel or signal includes PBCH, the second bandwidth is X, the first bandwidth is Y. In the SS block, there is a remaining bandwidth of (X - Y) / 2 on both sides of the symbols transmitting PSS and SSS. Except for the symbol transmitting only PBCH, the remaining bandwidths on both sides of the PSS / SSS symbols are used to transmit PBCH.

[0134] For example, as Figure 3 shown, in the SS block, the bandwidth of PBCH in the symbol transmitting only PBCH is 18 PRBs, while 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 there are 3 PRBs remaining on both sides of PSS, and 3 PRBs remaining on both sides of SSS; these remaining PRBs can all be used to transmit PBCH.

[0135] It should be understood that 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 can also be located on one side of the frequency-domain resource position of the first bandwidth, and on the other side, a channel or signal other than the first channel or signal and the second channel or signal can be transmitted, or no channel or signal can be transmitted.

[0136] 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. At this time, the frequency range of the third bandwidth is lower than the frequency range of the first bandwidth.

[0137] At this time, optionally, the lowest frequency-domain resource position of the third bandwidth can be equal to the lowest frequency-domain resource position of the second bandwidth, and the highest frequency-domain resource position of the first bandwidth can be equal to the highest frequency-domain resource position of the second bandwidth.

[0138] For example, assume that the first channel or signal includes PSS and SSS, the second channel or signal includes PBCH, the second bandwidth is X, the first bandwidth is Y. Within the SS block, the remaining bandwidth of (X - Y) is left on one side of the symbols transmitting PSS and SSS. Except for the symbols transmitting only PBCH, the remaining bandwidth on one side of the symbols transmitting PSS and SSS is used to transmit PBCH.

[0139] As Figure 4 shown, within the SS block, the bandwidth of PBCH in the symbols transmitting only PBCH is 18 PRBs, while the bandwidth occupied by PSS / SSS is 12 PRBs each (including the guard subcarriers on both sides of PSS and SSS). On the symbols transmitting PSS and SSS, the 12 PRBs occupied by PSS and SSS are located in the high-frequency range of the SS block, then there are 6 PRBs remaining in the low-frequency range of the SS block, and these remaining PRBs are all used to transmit PBCH.

[0140] Optionally, 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.

[0141] For example, assume that the first channel or signal includes PSS and SSS, the second channel or signal includes PBCH, the second bandwidth is X, the first bandwidth is Y. Within the SS block, the remaining bandwidth of (X - Y) is left on one side of the symbols transmitting PSS and SSS. Except for the symbols transmitting only PBCH, the remaining bandwidth on one side of the symbols transmitting PSS and SSS is used to transmit PBCH.

[0142] As Figure 5 shown, within the SS block, the bandwidth of PBCH in the symbols transmitting only PBCH is 18 PRBs, while the bandwidth occupied by PSS / SSS is 12 PRBs each (including the guard subcarriers on both sides of PSS and SSS). On the symbols transmitting PSS and SSS, the 12 PRBs occupied by PSS and SSS are located in the high-frequency range of the SS block, then there are 6 PRBs remaining in the low-frequency range of the SS block, and these remaining PRBs are all used to transmit PBCH.

[0143] Optionally, the network device starts from the first symbol among the N first symbols and the M second symbols, and maps the second channel or signal in the order of the N first symbols and the M second symbols in the time domain, first mapping to low-frequency domain resources and then to high-frequency domain resources. Among them, 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 starts from the first symbol among the N first symbols and the M second symbols, and demaps the second channel or signal in the order of the N first symbols and the M second symbols in the time domain, first demapping to low-frequency domain resources and then to high-frequency domain resources. Among them, the bandwidth demapped on the first symbol is the third bandwidth, and the bandwidth demapped on the second symbol is the second bandwidth.

[0144] For example, as Figure 6 shown, PBCH is mapped in the order of frequency domain first and then time domain on the frequency band that can transmit PBCH.

[0145] For example, taking Figure 6 as an example, PBCH can be mapped in the order of frequency domain first and then time domain (starting from the first symbol, first mapping to low-frequency domain bandwidth and then to high-frequency domain bandwidth; then operating in the same way for subsequent symbols in turn), that is, mapping in the order of the bandwidth of PBCH1 - PBCH2 - PBCH3 - PBCH4 - PBCH5 - PBCH6 in Figure 6 . In each part of the bandwidth, it is also mapped in the order from the low-frequency point to the high-frequency point of the frequency domain.

[0146] It should be understood that in the embodiments of the present application, mapping can also be performed in the order of time domain first and then frequency domain, or when performing frequency domain mapping, mapping can also be performed in the order of high frequency first and then low frequency.

[0147] Since when the terminal device performs cell search in a frequency band, the value of the synchronization channel grid for cell search is related to the bandwidth of the terminal and also related to 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 cell search will be.

[0148] Therefore, in the embodiments of the present application, the second channel or signal can be transmitted on the symbol for transmitting the first channel or signal, which can generally reduce the bandwidth occupied by the synchronization signal block, thereby reducing the number of initial searches without significantly reducing the transmission resources of the second channel or signal, and thus reducing or avoiding the impact on the transmission performance of the second channel or signal caused by reducing the bandwidth of the synchronization signal block, and thus improving the communication performance.

[0149] For example, assume that the first channel or signal includes the PSS and SSS, and the second channel or signal is the PBCH. In one symbol in the time domain, the sequence lengths of both the PSS and SSS are 127, which requires 127 REs in 12 PRBs, while the PBCH channel requires 288 REs in 24 PRBs. If, as Figure 7 shown, the PSS and SSS are transmitted on the first and third symbols respectively, and the PBCH is transmitted only on the second and fourth symbols, then the bandwidth occupied by the SS Block is the bandwidth occupied by 24 PRBs, and the PBCH transmitted on two symbols occupies a total of 288 * 2 = 576 REs; if, as Figures 3 - 6 shown, 6 PRBs on the first and third symbols are occupied to transmit the PBCH, then the bandwidth of the SS Block is 18 PRBs, so that on the basis of reducing the bandwidth of the SS Block, the resources occupied by the PBCH can be avoided from being reduced (i.e., the PBCH still occupies a total of 576 REs), thereby improving the communication performance.

[0150] It should be understood that although the above description is made with the first channel or signal and the second channel or signal being the channels or signals included in the synchronization signal block, the embodiments of the present application are not limited thereto. The first channel or signal and the second channel or signal may also not be the channels or signals included in the synchronization signal block. For example, the first channel or signal is the Physical Downlink Control Channel (PDCCH), the second channel or signal is the Physical Downlink Shared Channel (PDSCH), or the first channel or signal and the second channel or signal are other channels or signals.

[0151] Figure 8 is a schematic block diagram of a network device 300 according to an embodiment of the present application. As Figure 8 shown, the network device 300 includes a first transmission unit 310 and a second transmission unit 320; the first transmission unit 310 is configured to: on N first symbols, occupy a first bandwidth and send 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 second transmission unit 320 is configured to: on M second symbols, occupy a second bandwidth, and on S first symbols among the N first symbols, occupy a third bandwidth and send 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, and M and S are integers greater than or equal to 1.

[0152] It should be understood that the network device 300 may 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, details are not described herein again.

[0153] Figure 9 is a schematic block diagram of a terminal device 400 according to an embodiment of the present application. As Figure 9 shown, the terminal device 400 includes an acquisition unit 410. The acquisition unit 410 is configured to: on M second symbols, from a second bandwidth, and on S first symbols among the N first symbols, from a third bandwidth, acquire a second channel or signal included in the synchronization signal block sent by the network device, where, on the N first symbols, on a first bandwidth, the network device sends a first channel or signal included in the synchronization signal block; where 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.

[0154] Optionally, the acquisition unit 410 may also perform the operations in 230 to acquire a first channel or signal.

[0155] It should be understood that the terminal device 400 may 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, details are not described herein again.

[0156] Figure 10 is a schematic structural diagram of a system-on-chip 500 according to an embodiment of the present application. Figure 10 In the system-on-chip 500, an input interface 501, an output interface 502, the processor 503, and the memory 504 may be connected through an internal communication connection line, and the processor 503 is configured to execute the code in the memory 504.

[0157] 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, details are not described herein again.

[0158] 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, details are not described herein again.

[0159] Figure 11 is a schematic block diagram of a communication device 600 according to an embodiment of the present application. As Figure 11 shown, the communication device 600 includes a processor 610 and a memory 620. Among them, the memory 620 may store program code, and the processor 610 may execute the program code stored in the memory 620.

[0160] Optionally, asFigure 11 As shown, the communication device 600 may include a transceiver 630, and the processor 610 may control the transceiver 630 for external communication.

[0161] Optionally, the processor 610 may call the program code stored in the memory 620 to perform the corresponding operations of the network device in the method embodiments. For the sake of brevity, details are not described herein again.

[0162] Optionally, the processor 610 may call the program code stored in the memory 620 to perform the corresponding operations of the terminal device in the method embodiments. For the sake of brevity, details are not described herein again.

[0163] It should be understood that the processor in the embodiments of the present application may be an integrated circuit chip with signal processing capabilities. In the implementation process, each step of the above method embodiments may be completed by the integrated logic circuit in the hardware of the processor or instructions in software form. 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 gate or transistor logic devices, discrete hardware components. It can implement or execute the various methods, steps and logic block diagrams disclosed in the embodiments of the present application. 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 combination with the embodiments of the present application may be directly embodied as being executed by the hardware decoding processor, or 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 the art such as random access memory, flash memory, read-only memory, programmable read-only memory or electrically erasable programmable memory, registers, etc. This storage medium is located in the memory, and the processor reads the information in the memory and combines its hardware to complete the steps of the above method.

[0164] 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 but not limitation, many forms of RAM are available, such as static random access memory (SRAM), dynamic random access memory (DRAM), synchronous dynamic random access memory (SDRAM), double data rate synchronous dynamic random access memory (DDR SDRAM), enhanced synchronous dynamic random access memory (ESDRAM), synchlink dynamic random access memory (SLDRAM), and direct rambus 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.

[0165] Those of ordinary skill in the art can realize that the units and algorithm steps of the examples described in combination with the embodiments disclosed herein can be implemented by electronic hardware, or by a combination of computer software and electronic hardware. Whether these functions are executed in a hardware or software manner depends on the specific application and design constraints of the technical solution. Professional technicians can use different methods to implement the described functions for each specific application, but such implementation should not be considered to exceed the scope of the present application.

[0166] Those skilled in the art can clearly understand that for the convenience and conciseness of description, the specific working processes of the systems, devices, and units described above can refer to the corresponding processes in the foregoing method embodiments, and will not be described herein again.

[0167] In 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 merely illustrative. For example, the division of the units is only a logical function division. In actual implementation, there may be other division methods. For example, 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 displayed or discussed couplings or direct couplings or communication connections between each other can be through some interfaces. The indirect couplings or communication connections of the devices or units can be in electrical, mechanical, or other forms.

[0168] The units described as separate components may or may not be physically separated. The components displayed as units may or may not be physical units, that is, they can be located in one place or distributed to multiple network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0169] In addition, in each embodiment of the present application, the functional units can be integrated in a processing unit, or each unit can exist physically alone, or two or more units can be integrated in one unit.

[0170] If the above functions are implemented in the form of software function units and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the essence of the technical solution of the present application, or the part that contributes to the prior art, or part of this technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to enable a computer device (which can be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the methods described in each embodiment of the present application. The foregoing storage medium includes: various media such as USB flash drives, mobile hard disks, read-only memory (ROM), random access memory (RAM), magnetic disks, or optical discs that can store program codes.

[0171] As described above, the above are only specific implementation manners of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art can easily think of changes or substitutions within the technical scope disclosed in the present application, and all of them should be covered by the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A wireless communication method, characterized in that, Including: The network device occupies a first bandwidth on N first symbols and sends a first channel or signal included in a synchronization signal block to the terminal device, where 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, where 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.

2. The method according to claim 1, characterized in that, The first channel or signal includes a primary synchronization signal PSS and / or a secondary synchronization signal SSS; The first channel or signal includes PSS and SSS, and the first symbols occupied by the PSS and the SSS are different; and / or The second channel or signal includes a physical broadcast channel PBCH.

3. The method according to claim 1 or 2, characterized in that The frequency domain resource positions occupied by the first bandwidth and the third bandwidth are respectively subsets of the frequency domain resource positions occupied by the second bandwidth; The frequency domain resource position of the third bandwidth is located on both sides of the frequency domain resource position of the first bandwidth; and / or The second bandwidth is X, the first bandwidth is Y, and on the other symbols except the S first symbols among the N first symbols, the remaining bandwidth of X - Y does not transmit any channel or signal.

4. The method according to any one of claims 1 to 3, wherein The second bandwidth is less than the bandwidth occupied by 24 physical resource blocks (PRBs); and / or The second bandwidth is equal to the bandwidth occupied by 16, 18, or 20 PRBs.

5. The method according to any one of claims 1 to 4, characterized in that N is equal to 2, M is equal to 2, and the sorting of the N first symbols and the M second symbols in the time domain in sequence is: the first symbol, the second symbol, the first symbol, and the second symbol; and / or 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, 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 the time domain sequence of the N first symbols and the M second symbols, mapping from low frequency domain resources to high frequency domain resources, where 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.

6. The method according to any one of claims 2 to 5, characterized in that, The PBCH includes a demodulation reference signal DMRS of the PBCH; and / or The sequence length of the PSS is 127 and it occupies 127 resource elements (REs); the sequence length of the SSS is 127 and it occupies 127 REs; the PBCH channel totally occupies 576 REs.

7. A wireless communication method, characterized in that, Including: The terminal device obtains a first channel or signal included in a synchronization signal block sent by the network device from a first bandwidth on N first symbols; The terminal device obtains the second channel or signal included in the synchronization signal block on M second symbols from a second bandwidth and on S first symbols among the N first symbols from a third bandwidth; wherein 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.

8. The method according to claim 7, wherein The first channel or signal includes a primary synchronization signal PSS and / or a secondary synchronization signal SSS; The first channel or signal includes PSS and SSS, and the first symbols occupied by the PSS and the SSS are different; and / or The second channel or signal includes a physical broadcast channel PBCH.

9. The method according to claim 7 or 8, 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; The frequency-domain resource positions of the third bandwidth are located on both sides of the frequency-domain resource positions of the first bandwidth; and / or The second bandwidth is X, the first bandwidth is Y, and on the other symbols among the N first symbols except for the S first symbols, the remaining bandwidth of X - Y does not transmit any channel or signal.

10. The method according to any one of claims 7 to 9, wherein the second bandwidth is less than the bandwidth occupied by 24 physical resource blocks (PRBs); and / or the second bandwidth is equal to the bandwidth occupied by 16, 18, or 20 physical resource blocks (PRBs).

11. The method according to any one of claims 7 to 10, characterized in that, N is equal to 2, M is equal to 2, and the order of the N first symbols and the M second symbols in the time domain is successively: the first symbol, the second symbol, the first symbol, and the second symbol; and / or The terminal device obtains the second channel or signal included in the synchronization signal block on M second symbols from a second bandwidth and on S first symbols among the N first symbols from a third bandwidth, including: 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, in the time-domain order of the N first symbols and the M second symbols, first from low-frequency domain resources to 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.

12. The method according to any one of claims 8 to 11, characterized in that, The PBCH includes the demodulation reference signal DMRS of the PBCH; and / or The sequence length of the PSS is 127 and it occupies 127 resource elements (REs); the sequence length of the SSS is 127 and it occupies 127 REs; the PBCH channel totally occupies 576 REs.

13. A network device, characterized in that, It includes a first transmission unit and a second transmission unit; The first transmission unit is configured to: on N first symbols, occupy a first bandwidth, and send the first channel or signal included in the synchronization signal block to a terminal device, wherein N is an integer greater than or equal to 1; The second transmission unit is configured 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, where a frequency-domain resource position of the first bandwidth and a frequency-domain resource position of the third bandwidth do not overlap with each other, and M and S are integers greater than or equal to 1.

14. The network device according to claim 13, characterized in that, The first channel or signal includes a primary synchronization signal PSS and / or a secondary synchronization signal SSS; The first channel or signal includes PSS and SSS, and the first symbols occupied by the PSS and the SSS are different; and / or The second channel or signal includes a physical broadcast channel PBCH.

15. The network device according to claim 13 or 14, 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; The frequency-domain resource position of the third bandwidth is located on both sides of the frequency-domain resource position of the first bandwidth; and / or The second bandwidth is X, the first bandwidth is Y, and on the other symbols among the N first symbols except for the S first symbols, no channels or signals are transmitted on the remaining bandwidth of X - Y.

16. The network device according to any one of claims 13 to 15, wherein The second bandwidth is less than the bandwidth occupied by 24 PRBs; and / or The second bandwidth is equal to the bandwidth occupied by 16, 18, or 20 PRBs.

17. The network device according to any one of claims 13 to 16, characterized in that, N is equal to 2, M is equal to 2, and the sorting of the N first symbols and the M second symbols in chronological order in the time domain is: the first symbol, the second symbol, the first symbol, and the second symbol; and / or The second transmission unit is further configured to: In a manner of frequency domain first and then time domain, starting from the first symbol among the N first symbols and the M second symbols, in accordance with the chronological order of the N first symbols and the M second symbols in the time domain, map the second channel or signal in the order of low-frequency domain resources first and then high-frequency domain resources, where 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.

18. The network device according to any one of claims 14 to 17, characterized in that The PBCH includes a demodulation reference signal DMRS of the PBCH; and / or 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 a total of 576 REs.

19. A terminal device, characterized in that, Comprising an acquisition unit; The acquisition unit is configured to: on N first symbols, acquire a first channel or signal included in a synchronization signal block sent by a network device from a first bandwidth; on M second symbols, acquire 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, acquire the second channel or signal from a third bandwidth; where a frequency-domain resource position of the third bandwidth and a frequency-domain resource position of the first bandwidth do not overlap with each other, and M, N, and S are integers greater than or equal to 1.

20. The terminal device according to claim 19, characterized in that, The first channel or signal includes a primary synchronization signal PSS and / or a secondary synchronization signal SSS; The first channel or signal includes PSS and SSS, and the first symbols occupied by the PSS and the SSS are different; and / or The second channel or signal includes a physical broadcast channel PBCH.

21. The terminal device according to claim 19 or 20, characterized in that, The frequency-domain resource positions occupied by the first bandwidth and the third bandwidth are respectively subsets of the frequency-domain resource position occupied by the second bandwidth; The frequency-domain resource position of the third bandwidth is located on both sides of the frequency-domain resource position of the first bandwidth; and / or The second bandwidth is X, the first bandwidth is Y, and on the other symbols among the N first symbols except for the S first symbols, no channels or signals are transmitted on the remaining X - Y bandwidth.

22. The terminal device according to any one of claims 19 to 21, wherein The second bandwidth is less than the bandwidth occupied by 24 physical resource blocks (PRBs); and / or The second bandwidth is equal to the bandwidth occupied by 16, 18, or 20 physical resource blocks (PRBs).

23. The terminal device according to any one of claims 19 to 22, characterized in that, N is equal to 2, M is equal to 2, and the sequential order of the N first symbols and the M second symbols in the time domain is: the first symbol, the second symbol, the first symbol, and the second symbol; and / or The obtaining unit is further configured to: In a manner of frequency domain first and then time domain, starting from the first symbol among the N first symbols and the M second symbols, perform demapping of the second channel or signal in the sequential order of the N first symbols and the M second symbols in the time domain, first with low-frequency domain resources and then 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.

24. The terminal device according to any one of claims 20 to 23, characterized in that, The PBCH includes a demodulation reference signal DMRS of the PBCH; and / or The sequence length of the PSS is 127 and it occupies 127 resource elements (REs); the sequence length of the SSS is 127 and it occupies 127 REs; the PBCH channel totally occupies 576 REs.

25. A network device, comprising: A processor, a memory, and a transceiver, where the processor, the memory, and the transceiver communicate with each other through an internal connection path; wherein The memory is used for storing program code; The processor is used for calling the program code stored in the memory to cooperate with the transceiver to implement the method according to any one of claims 1 to 6.

26. A terminal device, comprising: A processor, a memory, and a transceiver, where the processor, the memory, and the transceiver communicate with each other through an internal connection path; wherein The memory is used for storing program code; The processor is used for calling the program code stored in the memory to cooperate with the transceiver to implement the method according to any one of claims 7 to 12.

27. A computer-readable storage medium for storing a computer program, the computer program comprising instructions which, when run on a computer, cause the computer to execute the method according to any one of claims 1 to 6, or to execute the method according to any one of claims 7 to 12.

28. A computer program product comprising instructions which, when run on a computer, cause the computer to execute the method according to any one of claims 1 to 6, or to execute the method according to any one of claims 7 to 12.

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