Wireless communication method, network device, and terminal device

Abstract

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

Description

[Technical field]

[0001] The present application relates to the field of communications, and more particularly, to a wireless communication method, a network device and a terminal device. [Background technology]

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

[0003] In a New Radio (NR) system, a network device can transmit multiple synchronization signal blocks (SS blocks) to a terminal device, and the terminal device can search for the SS blocks within the system bandwidth to obtain a cell identifier (ID) to perform time-frequency synchronization, obtain Physical Broadcasting Channel (PBCH) information, and perform RRM measurements based on the SSS and PBCH demodulation reference signals (DMRS).

[0004] In new wireless systems, the requirements for communication characteristics are high, so how to improve communication characteristics in terms of SS block transmission is an issue that needs to be resolved quickly. Summary of the Invention [Problem to be solved by the invention]

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

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

[0007] Therefore, in an embodiment of the present application, a second channel or signal can be transmitted in a code that transmits a first channel or signal, and the bandwidth occupied by the synchronization signal block can be reduced overall, thereby reducing the number of initial searches while not requiring a significant reduction in the transmission resources of the second channel or signal, and therefore reducing or avoiding the impact on the transmission characteristics of the second channel or signal due to the reduction in the bandwidth of the synchronization signal block, thereby improving communication characteristics.

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

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

[0010] With reference to the first aspect or any of the possible implementations above, in another possible implementation of the first aspect, the second channel or signal includes a Physical Broadcast Channel (PBCH).

[0011] With reference to the first aspect or any of the possible implementations above, in another possible implementation of the first aspect, a sum of the bandwidths of the first bandwidth and the third bandwidth is less than or equal to the second bandwidth.

[0012] With reference to the first aspect or any of the above possible implementation manners, in another possible implementation manner of the first aspect, the frequency domain resource locations occupied by the first bandwidth and the frequency domain resource locations occupied by the third bandwidth are respectively subsets of the frequency domain resource locations occupied by the second bandwidth.

[0013] With reference to the first aspect or any of the possible implementations above, in another possible implementation of the first aspect, a central frequency point of the first bandwidth is equal to a central frequency point of the second bandwidth.

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

[0015] With reference to the first aspect or any of the above possible implementations, in another possible implementation of the first aspect, the frequency domain resource location of the first bandwidth is located within a low frequency range of the second bandwidth; and The frequency domain resource location of the third bandwidth is located within a high frequency range of the second bandwidth.

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

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

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

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

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

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

[0022] Referring to the first aspect or any of the possible implementations above, in another possible implementation of the first aspect, N is equal to 2, M is equal to 2, The order in terms of chronological order in the time domain of the N first codes and the M second codes is the first code, the second code, the first code, and the second code.

[0023] Referring to the first aspect or any of the above possible implementations, in another possible implementation of the first aspect, the network device occupies a second bandwidth in M ​​second codes, and occupies a third bandwidth in S first codes among the N first codes, and transmits a second channel or signal included in a synchronization signal block to a terminal device, The network device performs mapping of the second channel or signal according to a frequency domain first, time domain second manner, starting from the first code among the N first codes and the M second codes, according to the order in the time domain of the N first codes and the M second codes, in such a manner that the low frequency domain resource is first and the high frequency domain resource is second; the bandwidth mapped in the first code is the third bandwidth, and the bandwidth mapped in the second code is the second bandwidth; The network device transmits the mapped second channel or signal to the terminal device.

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

[0025] Therefore, in an embodiment of the present application, a second channel or signal can be transmitted in a code that transmits a first channel or signal, and the bandwidth occupied by the synchronization signal block can be reduced overall, thereby reducing the number of initial searches while not requiring a significant reduction in the transmission resources of the second channel or signal, and therefore reducing or avoiding the impact on the transmission characteristics of the second channel or signal due to the reduction in the bandwidth of the synchronization signal block, thereby improving communication characteristics.

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

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

[0028] Referring to the second aspect or any of the above possible implementations, in another possible implementation of the second aspect, the second channel or signal includes a Physical Broadcast Channel (PBCH).

[0029] Referring to the second aspect or any of the above possible implementations, in another possible implementation of the second aspect, a sum of the bandwidths of the first bandwidth and the third bandwidth is less than or equal to the second bandwidth.

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

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

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

[0033] Referring to the second aspect or any of the above possible implementations, in another possible implementation of the second aspect, the frequency domain resource location of the first bandwidth is located within a low frequency range of the second bandwidth; and The frequency domain resource location of the third bandwidth is located within a high frequency range of the second bandwidth.

[0034] Referring to the second aspect or any of the above possible implementations, in another possible implementation of the second aspect, the frequency domain resource location of the first bandwidth is located within a high frequency range of the second bandwidth; and The frequency domain resource location of the third bandwidth is located within a low frequency range of the second bandwidth.

[0035] Referring to 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 each equal to a bandwidth occupied by an integer number of physical resource blocks (PRBs).

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

[0037] Referring to the second aspect or any of the above possible implementations, in another possible implementation of the second aspect, the second bandwidth is equal to the bandwidth occupied by 18 Physical Resource Blocks (PRBs).

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

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

[0040] Referring to the second aspect or any of the above possible implementations, in another possible implementation of the second aspect, N is equal to 2, M is equal to 2, The order in terms of chronological order in the time domain of the N first codes and the M second codes is the first code, the second code, the first code, and the second code.

[0041] Referring to the second aspect or any of the above possible implementations, in another possible implementation of the second aspect, the terminal device obtains a second channel or signal included in the synchronization signal block sent by the network device from the second bandwidth in M ​​second codes and from the third bandwidth in S first codes among the N first codes, Based on a method of terminal device first frequency domain and then time domain, starting from the first code among the N first codes and M second codes, and based on the order in the time domain of the N first codes and the M second codes, demap the second channel or signal so that the low frequency domain resource comes first and the high frequency domain resource comes last, and the bandwidth demapped in the first code is the third bandwidth, and the bandwidth demapped in the second code is the second bandwidth.

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

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

[0044] A network device according to a fifth aspect includes a processor, a memory and a transceiver, the processor, the memory and the transceiver communicating with each other via an internal connection path to transmit control and / or data signals, thereby causing the network device to perform the method of the first aspect or any possible implementation manner of the first aspect.

[0045] A terminal device according to a sixth aspect includes a processor, a memory and a transceiver, the processor, the memory and the transceiver communicating with each other through an internal connection path to transmit control and / or data signals, so that the terminal device executes the method according to the second aspect or any possible implementation manner of the second aspect.

[0046] A seventh aspect relates to a computer readable medium configured to store a computer program, the computer program including instructions for performing any of the methods described above or in any possible implementation manner.

[0047] A computer program product comprising instructions relating to an eighth aspect, which when executed on a computer causes the computer to carry out any of the methods described above or in any possible implementation thereof. [Brief description of the drawings]

[0048] [Figure 1] FIG. 1 is a schematic diagram of a wireless communication system according to an embodiment of the present invention.

[0049] [Diagram 2] FIG. 2 is a schematic flow chart of a wireless communication method according to an embodiment of the present application.

[0050] [Diagram 3] FIG. 3 is a schematic diagram of a transmission method of a synchronization signal block according to an embodiment of the present invention.

[0051] [Figure 4] FIG. 4 is a schematic diagram of a transmission method of a synchronization signal block according to an embodiment of the present invention.

[0052] [Diagram 5] FIG. 5 is a schematic diagram of a transmission method of a synchronization signal block according to an embodiment of the present invention.

[0053] [Figure 6] FIG. 6 is a schematic diagram of a transmission method of a synchronization signal block according to an embodiment of the present invention.

[0054] [Figure 7] FIG. 7 is a schematic diagram of a transmission method for a synchronization signal block.

[0055] [Figure 8] FIG. 8 is a schematic block diagram of a network device according to an embodiment of the present application.

[0056] [Figure 9] FIG. 9 is a schematic block diagram of a terminal device according to an embodiment of the present application.

[0057] [Figure 10] FIG. 10 is a schematic block diagram of a system chip according to an embodiment of the present application.

[0058] [Figure 11] FIG. 11 is a schematic block diagram of a communication device according to an embodiment of the present application. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0059] The following describes the technical solutions in the embodiments of the present application with reference to the drawings in the embodiments of the present application, and it is clear that the described embodiments are only some of the embodiments of the present application and not all of the embodiments. Any other embodiments that a person skilled in the art can conceive based on the embodiments of the present application without requiring creative efforts are within the technical scope of the present application.

[0060] The technical solutions of the embodiments of the present application may be applied to various communication systems, such as a Global System of Mobile communication (GSM) system, a Code Division Multiple Access (CDMA) system, a Wideband Code Division Multiple Access (WCDMA) system, a General Packet Radio Service (GPRS), a Long Term Evolution (LTE) system, an LTE Frequency Division Duplex (FDD) system, an LTE Time Division Duplex (TDD), a Universal Mobile Telecommunication System (UMTS), a Worldwide Interoperability for Microwave Access (WiMAX) communication system, or a 5G system.

[0061] FIG. 1 shows a wireless communication system 100 to which the embodiment of the present application is applied. The wireless communication system 100 may include a network device 110. The network device 100 may be a device for communicating with a terminal device. The network device 100 can provide communication coverage in a specific geographical area, and can communicate with a terminal device (e.g., UE) located within the coverage area. Preferably, the network device 100 may be a base station (Base Transceiver Station, BTS) in a GSM system or a CDMA system, a base station (Node B, NB) in a WCDMA system, 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, an in-vehicle device, a wearable device, a network side device in a 5G network, or a network device in a future evolution Public Land Mobile Network (PLMN), etc.

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

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

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

[0065] FIG. 1 exemplarily shows a network device and two terminal devices, and preferably, the wireless communication system 100 may include multiple network devices, and may include other quantities of terminal devices within the coverage range of each network device, and the embodiments of the present application are not limited thereto.

[0066] Preferably, the wireless communication system 100 may further include other network entities, such as a network controller, a mobility management entity, etc., and the embodiments of the present application are not limited thereto.

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

[0068] 2 is a schematic flow chart of a wireless communication method 200 according to an embodiment of the present application. Preferably, but not limited to, the method 200 is applied to the system shown in FIG 1. The method 200 includes at least some of the following contents:

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

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

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

[0072] Preferably, the first channel or signal includes a PSS and an SSS, the PSS and the SSS occupying the first code differently.

[0073] For example, a first channel or signal may include a primary synchronization signal and a secondary synchronization signal, N may be equal to 2, one code may be used to transmit the primary synchronization signal and another code may be used to transmit the secondary synchronization signal, and the code occupied for transmitting the primary synchronization signal and the code occupied for transmitting the secondary synchronization signal may be spaced apart by one code.

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

[0075] Preferably, the first channel or signal refers to a channel or signal occupying a first bandwidth in a first code, and may include channels or signals having the same bandwidth characteristics, or include a certain type of channels or signals, and the granularity of the classification can be determined according to specific circumstances, and the embodiments of the present application are not limited thereto, for example, the first channel or signal is a synchronization signal, or the first channel or signal is a primary synchronization signal or a secondary synchronization signal.

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

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

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

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

[0080] Preferably, the first bandwidth is equal to the bandwidth occupied by an integer number of Physical Resource Blocks (PRBs), for example, the first bandwidth is equal to the bandwidth occupied by 12 PRBs, but of course it may be other values, for example, the bandwidth occupied by 10 or 14 PRBs.

[0081] Preferably, in the present embodiment, the first bandwidth occupied for transmitting the first channel or signal may include guard subcarrier intervals on both sides.

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

[0083] Preferably, N first codes and M second codes are arranged in a crossed fashion.

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

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

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

[0087] Preferably, the first channel or signal includes a PSS but not an SSS, meaning that the PBCH may be transmitted only in symbols that carry a PSS, and not in symbols that carry an SSS.

[0088] Or, the first channel or signal may include an SSS but not a PSS, meaning that the PBCH may be transmitted only in symbols that transmit an SSS, and not in symbols that transmit a PSS.

[0089] Or, the first channel or signal may include a PSS and may include an SSS, which means that the PBCH may be transmitted in a code that transmits a PSS and in a code that transmits an SSS.

[0090] Although many parts of the embodiments of the present application have been described using examples in which the first channel or signal includes a PSS and / or SSS and the second channel or signal includes a PBCH, it should be understood that the embodiments of the present application are not limited to this.

[0091] For example, a first channel or signal may include a PSS and a second channel or signal may include an SSS, or a first channel or signal may include an SSS and a second channel or signal may include a PSS, or a first channel or signal may include a PBCH and a second channel or signal may include a PSS and / or an SSS.

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

[0093] Preferably, the second channel or signal refers to a channel signal occupying a second bandwidth in the second code and a third bandwidth in the first code, and may include channels or signals having the same bandwidth characteristics, or may include channels or signals of a certain type, and the granularity of classification can be determined according to specific circumstances, and the embodiments of the present application are not limited thereto.

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

[0095] Of course, the width and / or resource positions of the second bandwidth occupied for transmitting the second channels or signals in the M second codes may be identical.

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

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

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

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

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

[0101] Preferably, the second bandwidth is smaller than the bandwidth occupied by 24 PRBs, for example equal to the bandwidth occupied by 18 PRBs, and of course may be other values, for example equal to the bandwidth occupied by 20, 16, etc. PRBs.

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

[0103] Preferably, the third bandwidth is equal to the bandwidth occupied by six PRBs, but may of course be other values, for example equal to the bandwidth occupied by five, four, etc. PRBs.

[0104] Preferably, in the present embodiment, the second bandwidth occupied for transmitting the second channel or signal may include guard subcarrier intervals on either side.

[0105] Preferably, in the present embodiment, the third bandwidth occupied for transmitting the second channel or signal may include guard subcarrier intervals on both sides.

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

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

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

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

[0110] Preferably, the network device can transmit multiple SS blocks, and the multiple SS blocks can constitute a synchronization signal burst set (SS burst set). The multiple SS blocks can be transmitted using multiple transmission beams, respectively, and the transmission beam of each SS block is different from the transmission beam of other SS blocks.

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

[0112] For example, the second bandwidth is X and the first bandwidth is Y, and the third bandwidth may be less than or equal to XY, i.e., in N first codes, the bandwidth Y for transmitting a first channel or signal is less than or equal to XY for S codes in the N first codes, and the bandwidth for transmitting a second channel or signal is X for the second code.

[0113] When S is smaller than N, for the N first codes except for the S first codes, the remaining bandwidth of XY may transmit other channels or signals than the non-first channels or signals and the non-second channels or signals, or may not transmit any channels or signals.

[0114] Preferably, the frequency domain resource location occupied by the first bandwidth and the frequency domain resource location occupied by the third bandwidth are respectively subsets of the frequency domain resource location occupied by the second bandwidth, and preferably, the center frequency point of the second bandwidth may be referred to as the center frequency point of the synchronization signal block.

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

[0116] Preferably, the center frequency point of the first bandwidth is equal to the center frequency point of the second bandwidth, and 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, and preferably, the sum of the bandwidths of the first bandwidth and the third bandwidth is equal to or less than the second bandwidth.

[0117] For example, if a first channel or signal includes a PSS and an SSS, a second channel or signal includes a PBCH, the second bandwidth is X, and the first bandwidth is Y, then within an SS block, an excess bandwidth of (XY) / 2 bandwidth is left on both sides of the codes transmitting the PSS and the SSS, and except for the codes transmitting only the PBCH, both excess bandwidths on both sides of the PSS / SSS codes are used to transmit the PBCH.

[0118] For example, as shown in FIG. 3, in an SS block, the bandwidth of the PBCH in a code that transmits only the PBCH is 18 PRBs, but the bandwidth occupied by the PSS and SSS is both 12 PRBs, and the center frequency points of the 12 PRBs occupied by the PSS and SSS are the center frequency points of the SS block. In this case, three PRBs are left on each side of the PSS, and three PRBs are left on each side of the SSS, and these remaining PRBs can be used to transmit the PBCH.

[0119] 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 location of the third bandwidth may also be located on one side of the frequency domain resource location of the first bandwidth, and the other side may transmit channels or signals of non-first channels or signals and non-second channels or signals, or may not transmit any channels or signals. Preferably, the frequency domain resource location of the third bandwidth is located within a low frequency range of the second bandwidth, and the frequency domain resource location of the first bandwidth is located within a high frequency range of the second bandwidth, and the frequency range of the third bandwidth is smaller than the frequency range of the first bandwidth.

[0120] At this time, preferably, the lowest frequency domain resource location of the third bandwidth may be equal to the lowest frequency domain resource location of the second bandwidth, and the highest frequency domain resource location of the first bandwidth may be equal to the highest frequency domain resource location of the second bandwidth; For example, if a first channel or signal includes a PSS and an SSS, a second channel or signal includes a PBCH, the second bandwidth is X, and the first bandwidth is Y, then within an SS block, an excess bandwidth of (XY) bandwidth is left on one side of the codes transmitting the PSS and SSS, and except for the codes transmitting only the PBCH, the excess bandwidth on one side of the codes transmitting the PSS and SSS is used to transmit the PBCH.

[0121] As shown in Figure 4, in an SS block, the bandwidth of the PBCH in a code that transmits only the PBCH is 18 PRBs, but the bandwidth occupied by the PSS / SSS is both 12 PRBs (including guard subcarriers on both the PSS and SSS sides). In a code that transmits the PSS and SSS, the 12 PRBs occupied by the PSS and SSS are located in the high frequency range of the SS block, leaving 6 PRBs in the low frequency range of the SS block, and all of these remaining PRBs are used to transmit the PBCH.

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

[0123] For example, if a first channel or signal includes a PSS and an SSS, a second channel or signal includes a PBCH, the second bandwidth is X, and the first bandwidth is Y, then within an SS block, an excess bandwidth of (XY) bandwidth is left on one side of the code transmitting the PSS and SSS, and the bandwidth left on one side of the code transmitting the PSS and SSS, except for the code transmitting only the PBCH, is used to transmit the PBCH.

[0124] As shown in Figure 5, within an SS block, in a code that transmits only the PBCH, the bandwidth of the PBCH is 18 PRBs, but the bandwidth occupied by the PSS / SSS is both 12 PRBs (including guard subcarriers on both the PSS and SSS sides). In a code that transmits the PSS and SSS, when the 12 PRBs occupied by the PSS and SSS are located within the low frequency range of the SS block, 6 PRBs are left in the high frequency range of the SS block, and these remaining PRBs are all used to transmit the PBCH.

[0125] Preferably, the network device performs a first-frequency-domain-then-time-domain de-mapping of the second channel or signal according to the order in the time domain of the N first codes and the M second codes, starting from the first code among the N first codes and the M second codes, and performs a low-frequency domain resource first and a high-frequency domain resource second mapping of the second channel or signal according to the order in the time domain of the N first codes and the M second codes, the bandwidth mapped in the first code is the third bandwidth, the bandwidth mapped in the second code is the second bandwidth, and the network device transmits the mapped second channel or signal to the terminal device.Accordingly, the terminal device performs a first-frequency-domain-then-time-domain de-mapping of the second channel or signal according to the order in the time domain of the N first codes and the M second codes, starting from the first code among the N first codes and the M second codes, and performs a low-frequency domain resource first and a high-frequency domain resource second mapping of the second channel or signal according to the order in the time domain of the N first codes and the M second codes, the bandwidth demapped in the first code is the third bandwidth, and the bandwidth demapped in the second code is the second bandwidth.

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

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

[0128] It should be understood that in the embodiments of the present application, the mapping may be performed based on a time domain or frequency domain first approach, or when performing frequency domain mapping, the mapping may be performed based on a high frequency and then high frequency again approach. When a terminal device performs a cell search in a band, the value of the cell search synchronization channel raster relates to the terminal's bandwidth and further to the bandwidth occupied by the SS block, so the larger the bandwidth occupied by the SS block, the smaller the value of the resulting cell search synchronization channel raster.

[0129] Therefore, in an embodiment of the present application, a second channel or signal can be transmitted in a code that transmits a first channel or signal, and the bandwidth occupied by the synchronization signal block can be reduced overall, thereby reducing the number of initial searches while not requiring a significant reduction in the transmission resources of the second channel or signal, and therefore reducing or avoiding the impact on the transmission characteristics of the second channel or signal due to the reduction in the bandwidth of the synchronization signal block, thereby improving communication characteristics.

[0130] For example, if the first channel or signal includes a PSS and an SSS, and the second channel or signal is a PBCH, the sequence length of the PSS and the SSS is 127, and 127 REs of 12 PRBs are required, and the PBCH channel is required to occupy 288 REs of 24 PRBs. As shown in FIG. 7, if the PSS and the SSS are transmitted in the first and third codes respectively, and only the PBCH is transmitted in the second and fourth codes, the bandwidth occupied by the SS block is the bandwidth occupied by 24 PRBs. As shown in FIG. 3-6, if the PBCH is transmitted by occupying 6 PRBs in the first and third codes, the bandwidth of the SS block is 18 PRBs. Therefore, based on reducing the bandwidth of the SS block, it is possible to avoid reducing the resources occupied by the PBCH, and thereby improve communication characteristics.

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

[0132] Fig. 8 is a schematic block diagram of a network device 300 according to an embodiment of the present application. As shown in Fig. 8, the network device 300 includes a first transmission unit 310 and a second transmission unit 320, the first transmission unit 310 is configured to occupy a first bandwidth in N first codes, and transmit 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 occupy a second bandwidth in M ​​second codes, and occupy a third bandwidth in S first codes among the N first codes, and transmit 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 each other, and M and S are integers greater than or equal to 1.

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

[0134] Fig. 9 is a schematic block diagram of a terminal device 400 according to an embodiment of the present application. As shown in Fig. 9, the terminal device 400 includes an acquisition unit 410, which is configured to acquire a second channel or signal included in the synchronization signal block transmitted by the network device from a second bandwidth in M ​​second codes and from a third bandwidth in S first codes among the N first codes, and transmit a first channel or signal included in the synchronization signal block by the network device in a first bandwidth in the N first codes, the frequency domain resource positions of the third bandwidth and the first bandwidth do not overlap with each other, and the M, the N, and the S are integers equal to or greater than 1.

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

[0136] It should be understood that the terminal device 400 can correspond to the terminal device in the method 200, and can implement the corresponding operations implemented by the terminal device in the method 200, and the description thereof will be omitted here for brevity.

[0137] 10 is a schematic structural diagram of a system chip 500 according to an embodiment of the present application. The system chip 500 in FIG. 10 includes an input interface 501 and an output interface 502, and the processor 503 and the memory 504 can be connected through an internal communication connection line, and the processor 503 is used to execute the code in the memory 504.

[0138] Preferably, the code, when executed, causes the processor 503 to implement a method performed by a network device in a method embodiment, the description of which is omitted here for the sake of brevity.

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

[0140] 11 is a schematic block diagram of a communication device 600 according to an embodiment of the present application. As shown in FIG. 11, the communication device 600 includes a processor 610 and a memory 620. The memory 620 can store program code, and the processor 610 can execute the program code stored in the memory 620.

[0141] Preferably, as shown in FIG. 11, the communication device 600 may include a transceiver 630, and the processor 610 can control the transceiver 630 to communicate with the outside.

[0142] Preferably, the processor 610 can call program codes stored in the memory 620 to perform corresponding operations of the network device in the method embodiments, which will not be described here for the sake of brevity.

[0143] Preferably, the processor 610 can call the program codes stored in the memory 620 to perform corresponding operations of the terminal device in the method embodiments, which will not be described here for the sake of brevity.

[0144] It should be understood that the processor in the embodiments of the present application may be an integrated circuit chip and has the ability to process signals. In the process of realization, each step of the above method embodiment can be completed by a hardware integrated logic circuit in the processor or a command in the form of software. The processor may be a general-purpose processor, a digital signal processor (DSP), an application specific integrated circuit (ASIC), a field programmable gate array (FPGA) or other programmable logic device, a discrete gate or transistor logic device, a discrete hardware component. Each method, step and logic block diagram disclosed in the embodiments of the present application can be realized or executed. The general-purpose processor may be a microprocessor, or the processor may be any ordinary processor, etc. The steps referring to the method disclosed in the embodiments of the present application may be directly embodied as being executed and completed by a hardware decode processor, or executed and completed by a combination of hardware and software modules in the decode processor. The software modules 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 a memory, and a processor reads the information in the memory and completes the steps of the above method in combination with its hardware.

[0145] It is understood that the memory in the embodiments of the present application may be volatile memory, or may be non-volatile memory, or may include both volatile and non-volatile memory. The non-volatile memory may be Read-Only Memory (ROM), Programmable Read-Only Memory (PROM), Erasable Programmable Read-Only Memory (EPROM), Electrically Erasable Programmable Read-Only Memory (EEPROM) or Flash memory. The volatile memory may be Random Access Memory (RAM), which is used as an external cache memory. By way of example and not limitation, many types of RAM can be used, such as static random access memory (Static RAM, SRAM), dynamic random access memory (DRAM, DRAM), synchronous dynamic random access memory (Synchronous DRAM, SDRAM), double data rate synchronous dynamic random access memory (Double Data Rate SDRAM, DDR SDRAM), enhanced synchronous dynamic random access memory (Enhanced SDRAM, ESDRAM), synchronous linked dynamic random access memory (Synchlink DRAM, SLDRAM), and direct memory bus random access memory (Direct Rambus RAM, 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.

[0146] As those skilled in the art will appreciate, each example unit and algorithm step described with reference to the embodiments disclosed herein can be realized in electronic hardware, or a combination of computer software and electronic hardware. Whether such functions are realized as hardware or software depends on the specific application and design constraints of the technical solution. Professionals can realize the described functions using different methods for each specific application, but such realization should not be considered as going beyond the scope of the present application.

[0147] Those skilled in the art can clearly understand that for convenience and conciseness of description, the specific operation processes of the above systems, devices and units can refer to the corresponding processes in the above method embodiments, and the description will be omitted here.

[0148] In some embodiments provided by the present application, it should be understood that the disclosed system, device and method can be realized in other ways. For example, the device embodiments described above are merely schematic, for example, the division of the units is merely a division of logical functions, and may have other distinguishing manners when actually realized, for example, multiple units or components may be combined or integrated into another system, or certain features may be ignored or not implemented. Meanwhile, the mutual coupling or direct coupling or communication connection shown or discussed may use an interface, an indirect coupling or communication connection of devices or units, which may be of electrical, mechanical or other type.

[0149] The units described above as separate components may or may not be physically separate, and the components shown as units may or may not be physical units, i.e., they may be located in one place or distributed among multiple network units. The locations of the units or all of the units can be selected according to actual needs to achieve the objective of the solution of the present embodiment.

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

[0151] The functions may be realized in the form of a software functional unit and stored in a computer-readable storage medium when sold or used as an independent product. Based on this understanding, the technical solution of the present application, or a part contributing to the prior art or a part of the technical solution may be embodied in the form of a software product, and the computer software product is stored in a storage medium and includes some commands, thereby making a computer device (which may be a personal computer, a server, or a network device, etc.) perform all or some of the steps of the method described in each embodiment of the present application. The storage medium includes various media that can store program code, such as USB memory, portable hard disk, read-only memory (ROM), random access memory (RAM), magnetic disk, or optical disk.

[0152] The above are only specific embodiments of the present application, but the scope of protection of the present application is not limited thereto, and any modifications or replacements that a person skilled in the art can easily think of within the technical scope disclosed in the present application should be included in the scope of protection of the present application. Therefore, the scope of protection of the present application shall be subject to the scope of protection of the claims.

Claims

1. 1. A wireless communication method, comprising: A network device transmits a first channel or signal included in a synchronization signal block to a terminal device by occupying a first bandwidth in N first codes, where N is 2, the first channel or signal includes a primary synchronization signal (PSS) and a secondary synchronization signal (SSS), and among the two first codes, one is for transmitting the PSS and the other is for transmitting the SSS; The network device occupies a second bandwidth for M second codes and a third bandwidth for S first codes among the N first codes to transmit a second channel or signal included in the synchronization signal block to the terminal device, where M is 2, S is 1, the second channel or signal includes a physical broadcast channel (PBCH), frequency domain resource positions of the first bandwidth and the third bandwidth do not overlap with each other, and the forward / backward order of the two first codes and the two second codes in the time domain is first code, second code, first code, second code; the sum of the first bandwidth and the third bandwidth is less than or equal to the second bandwidth; the second bandwidth is X, the first bandwidth is Y, and no channel or signal is transmitted in the remaining bandwidth of X-Y in codes other than S first codes among the N first codes. A wireless communication method.

2. The frequency domain resource locations occupied by the first bandwidth and the frequency domain resource locations occupied by the third bandwidth are each a subset of the frequency domain resource locations occupied by the second bandwidth. The method of claim 1.

3. The frequency domain resource location of the third bandwidth is located on both sides of the frequency domain resource location of the first bandwidth. The method according to claim 1 or 2.

4. The second bandwidth is smaller than the bandwidth occupied by 24 PRBs. The method according to any one of claims 1 to 3.

5. The second bandwidth is equal to a bandwidth occupied by 18, 20, or 16 PRBs. The method according to claim 4.

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

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

8. 1. A wireless communication method, comprising: The terminal device acquires a first channel or signal included in the synchronization signal block transmitted by the network device from a first bandwidth in N first codes, and acquires a second channel or signal included in the synchronization signal block transmitted by the network device from a second bandwidth in M ​​second codes and from a third bandwidth in S first codes of the N first codes; the N is 2, the first channel or signal includes a primary synchronization signal (PSS) and a secondary synchronization signal (SSS), one of the two first codes is for acquiring a PSS and the other is for acquiring an SSS, the M is 2, the S is 1, the second channel or signal includes a physical broadcast channel (PBCH), the frequency domain resource positions of the first bandwidth and the third bandwidth do not overlap with each other, and the forward and backward order of the two first codes and the two second codes in the time domain is the first code, the second code, the first code, and the second code; the sum of the first bandwidth and the third bandwidth is less than or equal to the second bandwidth; the second bandwidth is X, the first bandwidth is Y, and no channel or signal is transmitted in the remaining bandwidth of X-Y in codes other than S first codes among the N first codes. A wireless communication method.

9. The frequency domain resource locations occupied by the first bandwidth and the frequency domain resource locations occupied by the third bandwidth are each a subset of the frequency domain resource locations occupied by the second bandwidth. The method according to claim 8.

10. The frequency domain resource location of the third bandwidth is located on both sides of the frequency domain resource location of the first bandwidth.

10. The method according to claim 8 or 9.

11. The second bandwidth is smaller than the bandwidth occupied by 24 PRBs. The method according to any one of claims 8 to 10.

12. The second bandwidth is equal to a bandwidth occupied by 18, 20, or 16 PRBs. The method of claim 11.

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

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

15. A network device, a first transmission unit configured to transmit a first channel or signal included in a synchronization signal block to a terminal device by occupying a first bandwidth in N first codes, where N is 2, the first channel or signal includes a primary synchronization signal (PSS) and a secondary synchronization signal (SSS), and among the two first codes, one is for transmitting the PSS and the other is for transmitting the SSS; a second transmission unit configured to transmit a second channel or signal included in the synchronization signal block to the terminal device by occupying a second bandwidth in M ​​second codes and a third bandwidth in S first codes among the N first codes, wherein the M is 2, the S is 1, the second channel or signal includes a physical broadcast channel (PBCH), the frequency domain resource positions of the first bandwidth and the third bandwidth do not overlap with each other, and the forward / backward order in the time domain of the two first codes and the two second codes is the first code, the second code, the first code, and the second code; the sum of the first bandwidth and the third bandwidth is less than or equal to the second bandwidth; the second bandwidth is X, the first bandwidth is Y, and no channel or signal is transmitted in the remaining bandwidth of X-Y in codes other than S first codes among the N first codes. Network device.

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

16. The network device of claim 15.

17. The second bandwidth is smaller than a bandwidth occupied by 24 PRBs, and the second bandwidth is equal to a bandwidth occupied by 18, 20, or 16 PRBs.

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

18. The PBCH includes a DMRS of the PBCH, and / or The PSS has a sequence length of 127 and occupies 127 REs, the SSS has a sequence length of 127 and occupies 127 REs, and the PBCH occupies 576 REs. A network device according to any one of claims 15 to 17.

19. A terminal device, comprising: an acquisition unit; The acquisition unit is configured to acquire a first channel or signal included in the synchronization signal block transmitted by the network device from a first bandwidth in N first codes, and acquire a second channel or signal included in the synchronization signal block transmitted by the network device from a second bandwidth in M ​​second codes and from a third bandwidth in S first codes of the N first codes; the N is 2, the first channel or signal includes a primary synchronization signal (PSS) and a secondary synchronization signal (SSS), one of the two first codes is for acquiring a PSS and the other is for acquiring an SSS, the M is 2, the S is 1, the second channel or signal includes a physical broadcast channel (PBCH), the frequency domain resource positions of the first bandwidth and the third bandwidth do not overlap with each other, and the forward and backward order of the two first codes and the two second codes in the time domain is the first code, the second code, the first code, and the second code; the sum of the first bandwidth and the third bandwidth is less than or equal to the second bandwidth; the second bandwidth is X, the first bandwidth is Y, and no channel or signal is transmitted in the remaining bandwidth of X-Y in codes other than S first codes among the N first codes. Terminal device.

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

20. The terminal device according to claim 19.

21. The second bandwidth is smaller than a bandwidth occupied by 24 PRBs, and the second bandwidth is equal to a bandwidth occupied by 18, 20, or 16 PRBs.

21. A terminal device according to claim 19 or 20.

22. The PBCH includes a DMRS of the PBCH, and / or The PSS has a sequence length of 127 and occupies 127 REs, the SSS has a sequence length of 127 and occupies 127 REs, and the PBCH occupies 576 REs. A terminal device according to any one of claims 19 to 21.

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