Wireless communication method and apparatus

Abstract

The application provides a wireless communication method and device, which combines a synchronization signal block, flexibly performs frequency domain resource allocation and / or bandwidth part configuration for a terminal device, and can improve the performance of a communication system. The method comprises the following steps: a network device receives a first message sent by a terminal device, wherein the first message is used to indicate a first synchronization signal block detected by the terminal device; and according to the first synchronization signal block, the network device performs frequency domain resource allocation and / or bandwidth part configuration on the terminal device.

Description

[0001] This application is a divisional application of application No. 201780073578.1 (international application No. PCT / CN2017 / 088792) with a filing date of June 16, 2017, the title of which is "Wireless communication method and device", the priority date of which is June 16, 2016. TECHNICAL FIELD

[0002] Embodiments of the present application relate to the field of communication, and more particularly, to a wireless communication method and device. BACKGROUND

[0003] In a long term evolution (LTE) communication system, a terminal device can be allocated with resources based on a center frequency point of a system bandwidth in combination with a data amount transmitted between the terminal device, and a reference signal can be transmitted based on the center frequency point of the system bandwidth.

[0004] In a new radio (NR) communication system, how to allocate and / or configure resources, or transmit a reference signal is an urgent problem to be solved. SUMMARY

[0005] The present application provides a wireless communication method and device, which can realize allocation and / or configuration of resources, or transmission of a reference signal in an NR system.

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

[0007] A network device receives a first message sent by a terminal device, the first message being used to indicate a first synchronization signal block detected by the terminal device.

[0008] According to the first synchronization signal block, the network device performs frequency domain resource allocation and / or bandwidth part configuration on the terminal device.

[0009] Therefore, in embodiments of the present application, the network device can perform frequency domain resource allocation and / or bandwidth part configuration on the terminal device in combination with the synchronization signal block currently detected by the terminal device, and flexible frequency domain resource allocation and / or bandwidth part configuration can be realized.

[0010] In combination with the first aspect, in a possible implementation manner of the first aspect, the network device performs frequency domain resource allocation and / or bandwidth part configuration on the terminal device according to the first synchronization signal block, comprising:

[0011] According to a frequency point occupied by the first synchronization signal block, the network device performs frequency domain resource allocation and / or bandwidth part configuration on the terminal device.

[0012] With reference to the first aspect or any possible implementation of the first aspect, in a possible implementation of the first aspect, the network device determines the reference point according to the frequency point occupied by the first synchronization signal block.

[0013] The network device determines the reference point according to the frequency point occupied by the first synchronization signal block.

[0014] The network device performs frequency domain resource allocation and / or bandwidth part configuration on the terminal device according to the reference point.

[0015] With reference to the first aspect or any possible implementation of the first aspect, in a possible implementation of the first aspect, the method further includes:

[0016] The network device sends first information to the terminal device, where the first information is used to indicate a reference point for frequency domain resource allocation and / or bandwidth part configuration of the terminal device by the network device.

[0017] With reference to the first aspect or any possible implementation of the first aspect, in a possible implementation of the first aspect, the first information is carried in a random access response message or radio resource control (RRC) dedicated signaling.

[0018] With reference to the first aspect or any possible implementation of the first aspect, in a possible implementation of the first aspect, the network device determines the reference point according to the frequency point occupied by the first synchronization signal block.

[0019] The network device determines the frequency point occupied by the first synchronization signal block as the reference point.

[0020] With reference to the first aspect or any possible implementation of the first aspect, in a possible implementation of the first aspect, the network device determines the reference point according to the frequency point occupied by the first synchronization signal block.

[0021] The network device determines a second synchronization signal block according to the frequency point occupied by the first synchronization signal block.

[0022] The network device determines the reference point according to the frequency point occupied by the second synchronization signal block.

[0023] With reference to the first aspect or any possible implementation of the first aspect, in a possible implementation of the first aspect, the network device determines the reference point according to the frequency point occupied by the second synchronization signal block.

[0024] The network device determines the frequency point occupied by the second synchronization signal block as the reference point.

[0025] With reference to the first aspect or a possible implementation manner of the first aspect, in a fourth possible implementation manner of the first aspect, the method further includes:

[0026] The network device sends second information, the second information being used for indicating a frequency domain relationship between a plurality of synchronization signal blocks, the plurality of synchronization signal blocks including the first synchronization signal block and the second synchronization signal block.

[0027] With reference to the first aspect or a possible implementation manner of the first aspect, in a fourth possible implementation manner of the first aspect, the method further includes:

[0028] When an interval between the frequency point occupied by the first synchronization signal block and the frequency domain resource to be allocated to the terminal device is greater than or equal to a predetermined value, the second synchronization signal block is determined.

[0029] With reference to the first aspect or a possible implementation manner of the first aspect, in a fourth possible implementation manner of the first aspect, the network device takes a first reference point as a reference point for bandwidth part configuration of the terminal device, and takes a second reference point as a reference point for frequency domain resource allocation of the terminal device.

[0030] With reference to the first aspect or a possible implementation manner of the first aspect, in a fourth possible implementation manner of the first aspect, the second reference point is a frequency point occupied by a synchronization signal block closest to a configured bandwidth part.

[0031] With reference to the first aspect or a possible implementation manner of the first aspect, in a fourth possible implementation manner of the first aspect, the first reference point is the frequency point occupied by the first synchronization signal block.

[0032] With reference to the first aspect or a possible implementation manner of the first aspect, in a fourth possible implementation manner of the first aspect, the first reference point is a frequency point occupied by the second synchronization signal block.

[0033] With reference to the first aspect or a possible implementation manner of the first aspect, in a fourth possible implementation manner of the first aspect, the first reference point and the second reference point are the same reference point; or,

[0034] The first reference point and the second reference point are different reference points.

[0035] With reference to the first aspect or a possible implementation manner of the first aspect, in a fourth possible implementation manner of the first aspect, the network device performs frequency domain resource allocation and / or bandwidth part configuration on the terminal device according to the reference point, including:

[0036] The network device sends third information to the terminal device, where the third information is used to indicate:

[0037] The allocated resource size and / or offset relative to the reference point, and / or the number of configured bandwidth parts and / or offset relative to the reference point.

[0038] With reference to the first aspect or a possible implementation manner of the first aspect, in a possible implementation manner of the first aspect, the method further includes:

[0039] According to a third reference point, the network device sends a reference signal to the terminal device.

[0040] With reference to the first aspect or a possible implementation manner of the first aspect, in a possible implementation manner of the first aspect, the method further includes:

[0041] The network device sends fourth information to the terminal device, where the fourth information is used to indicate the third reference point at which the terminal device sends a reference signal.

[0042] With reference to the first aspect or a possible implementation manner of the first aspect, in a possible implementation manner of the first aspect, the first message carries an index of the first synchronization signal block.

[0043] With reference to the first aspect or a possible implementation manner of the first aspect, in a possible implementation manner of the first aspect, the first message indicates the first synchronization signal block to the network device by occupied resources.

[0044] With reference to the first aspect or a possible implementation manner of the first aspect, in a possible implementation manner of the first aspect, the method further includes:

[0045] The network device sends fifth information to the terminal device, where the fifth information is used to indicate a correspondence between the resources occupied by the plurality of first messages and the plurality of synchronization signal blocks.

[0046] With reference to the first aspect or a possible implementation manner of the first aspect, in a possible implementation manner of the first aspect, the first message is a message in a random access procedure.

[0047] With reference to the first aspect or a possible implementation manner of the first aspect, in a possible implementation manner of the first aspect, the first message is a random access request message, and the first message indicates the first synchronization signal block to the network device by a carried random access preamble.

[0048] With reference to the first aspect or a possible implementation manner of the first aspect, in a fourth possible implementation manner of the first aspect, the method further includes:

[0049] The network device sends sixth information to the terminal device, where the sixth information is used to indicate a correspondence between the multiple preamble access codes and the multiple synchronization signal blocks.

[0050] With reference to the first aspect or a possible implementation manner of the first aspect, in a fourth possible implementation manner of the first aspect, the method further includes:

[0051] According to the first synchronization signal block, the terminal device is allocated a frequency domain resource and / or a bandwidth part in combination with capability information of the terminal device and / or a current service condition of the network.

[0052] A second aspect provides a wireless communication method, including:

[0053] The terminal device sends a first message to the network device, where the first message is used to indicate a first synchronization signal block detected by the terminal device.

[0054] According to the first synchronization signal block, the terminal device determines frequency domain resource allocation and / or bandwidth part configuration performed by the network device on the terminal device.

[0055] With reference to the second aspect, in a possible implementation manner of the second aspect, the terminal device determines the frequency domain resource allocation and / or the bandwidth part configuration performed by the network device on the terminal device according to the first synchronization signal block, including:

[0056] According to a frequency point occupied by the first synchronization signal block, the terminal device determines the frequency domain resource allocation and / or the bandwidth part configuration performed by the network device on the terminal device.

[0057] With reference to the second aspect or a possible implementation manner of the second aspect, in a fourth possible implementation manner of the second aspect, the terminal device determines the frequency domain resource allocation and / or the bandwidth part configuration performed by the network device on the terminal device according to the frequency point occupied by the first synchronization signal block, including:

[0058] According to the frequency point occupied by the first synchronization signal block, a reference point of the frequency domain resource allocation and / or the bandwidth part configuration performed by the network device on the terminal device is determined.

[0059] According to the reference point, the terminal device determines the frequency domain resource allocation and / or the bandwidth part configuration performed by the network device on the terminal device.

[0060] With reference to the second aspect or a possible implementation manner of the second aspect, in a fourth possible implementation manner of the second aspect, the determining, by the network device, the reference point of the network device for frequency domain resource allocation and / or bandwidth part configuration to the terminal device according to the frequency point occupied by the first synchronization signal block comprises:

[0061] determining the frequency point occupied by the first synchronization signal block as the reference point.

[0062] With reference to the second aspect or a possible implementation manner of the second aspect, in a fourth possible implementation manner of the second aspect, the reference point of the network device for bandwidth part configuration to the terminal device is a first reference point, and the reference point of the network device for frequency domain resource allocation to the terminal device is a second reference point.

[0063] With reference to the second aspect or a possible implementation manner of the second aspect, in a fourth possible implementation manner of the second aspect, the first reference point is the frequency point occupied by the first synchronization signal block.

[0064] With reference to the second aspect or a possible implementation manner of the second aspect, in a fourth possible implementation manner of the second aspect, the second reference point is a frequency point occupied by a latest synchronization signal block of a configured bandwidth part.

[0065] With reference to the second aspect or a possible implementation manner of the second aspect, in a fourth possible implementation manner of the second aspect, the first reference point and the second reference point are the same reference point; or,

[0066] the first reference point and the second reference point are different reference points.

[0067] With reference to the second aspect or a possible implementation manner of the second aspect, in a fourth possible implementation manner of the second aspect, the method further comprises:

[0068] receiving, by the network device, first information sent by the terminal device, the first information being used to indicate:

[0069] a size of an allocated resource and / or an offset relative to the reference point, and / or a number of configured bandwidth parts and / or an offset relative to the reference point;

[0070] the determining, by the terminal device, the frequency domain resource allocation and / or the bandwidth part configuration to the terminal device by the network device according to the reference point comprises:

[0071] determining, by the terminal device, the frequency domain resource allocation and / or the bandwidth part configuration to the terminal device by the network device according to the first information and the reference point.

[0072] With reference to the second aspect or a possible implementation manner of the second aspect, in a fourth possible implementation manner of the second aspect, the method further includes:

[0073] determining, according to a third reference point at which the network device transmits a reference signal and a configured bandwidth part, a reference signal part corresponding to the bandwidth part;

[0074] With reference to the second aspect or a possible implementation manner of the second aspect, in a fourth possible implementation manner of the second aspect, the method further includes:

[0075] receiving, by the terminal device, second information transmitted by the network device, the second information being used to indicate the third reference point.

[0076] With reference to the second aspect or a possible implementation manner of the second aspect, in a fourth possible implementation manner of the second aspect, the first message carries an index of the first synchronization signal block.

[0077] With reference to the second aspect or a possible implementation manner of the second aspect, in a fourth possible implementation manner of the second aspect, the first message indicates the first synchronization signal block to the network device by occupied resources.

[0078] With reference to the second aspect or a possible implementation manner of the second aspect, in a fourth possible implementation manner of the second aspect, the method further includes:

[0079] receiving, by the terminal device, third information transmitted by the network device, the third information being used to indicate a correspondence between resources occupied by a plurality of the first messages and a plurality of synchronization signal blocks;

[0080] transmitting, by the terminal device, a first message to a network device, including:

[0081] determining, according to the correspondence indicated by the third information, resources for transmitting the first message;

[0082] transmitting the first message on the determined resources.

[0083] With reference to the second aspect or a possible implementation manner of the second aspect, in a fourth possible implementation manner of the second aspect, the first message is a message in a random access procedure.

[0084] With reference to the second aspect or a possible implementation manner of the second aspect, in a fourth possible implementation manner of the second aspect, the first message is a random access request message, and the first message indicates the first synchronization signal block to the network device by a carried random access preamble.

[0085] With reference to the second aspect or a possible implementation manner of the second aspect, in a possible implementation manner of the second aspect, the method further includes:

[0086] The terminal device receives fourth information sent by the network device, the fourth information being used to indicate a correspondence between a plurality of preamble access codes and a plurality of synchronization signal blocks.

[0087] The terminal device sends a first message to the network device, including:

[0088] According to the first synchronization signal block and the correspondence indicated by the fourth information, a random access preamble is determined.

[0089] The first message carrying the random access preamble is sent.

[0090] In a third aspect, a wireless communication method is provided, including:

[0091] The network device sends first information, the first information being used to indicate a reference point for the network device to perform frequency domain resource allocation and / or bandwidth part configuration on a terminal device.

[0092] According to the reference point, the network device performs frequency domain resource allocation and / or bandwidth part configuration on the terminal device.

[0093] Therefore, in the embodiments of the present application, the network device indicates a reference point for the terminal device to perform frequency domain resource allocation and / or bandwidth part configuration, which can flexibly configure the reference point, avoids using a system-fixed reference point, and can avoid the problem that, in the case of a large system bandwidth, a fixed center frequency point of the system bandwidth is used as the reference point, which results in a long field for indicating the allocated frequency domain resource and / or the configured bandwidth part to the terminal device, and increases the signaling overhead. Moreover, the network device indicates a reference point for the terminal device to perform frequency domain resource allocation and / or bandwidth part configuration, which can be applied to a scenario where a plurality of synchronization signal blocks exist.

[0094] With reference to the third aspect, in a possible implementation manner of the third aspect, the reference point for the network device to perform bandwidth part configuration on the terminal device is a first reference point, and the reference point for the network device to perform frequency domain resource allocation on the terminal device is a second reference point.

[0095] With reference to the third aspect or a possible implementation manner of the third aspect, in a possible implementation manner of the third aspect, the first information is used to indicate the first reference point and the second reference point.

[0096] With reference to the third aspect or a possible implementation manner of the third aspect, in a possible implementation manner of the third aspect, the first information is used to indicate the first reference point.

[0097] The network device performs frequency domain resource allocation and / or bandwidth part configuration on the terminal device according to the reference point.

[0098] The bandwidth part configuration is performed according to the first reference point.

[0099] The second reference point is determined according to the configured bandwidth part.

[0100] The frequency domain resource allocation is performed according to the second reference point.

[0101] With reference to the third aspect or a possible implementation manner of the third aspect, in a possible implementation manner of the third aspect, the second reference point is a frequency point occupied by a synchronization signal block closest to the configured bandwidth part.

[0102] With reference to the third aspect or a possible implementation manner of the third aspect, in a possible implementation manner of the third aspect, the first reference point and the second reference point are the same reference point; or,

[0103] The first reference point and the second reference point are different reference points.

[0104] With reference to the third aspect or a possible implementation manner of the third aspect, in a possible implementation manner of the third aspect, the method further includes:

[0105] The network device sends a reference signal to the terminal device according to a third reference point.

[0106] With reference to the third aspect or a possible implementation manner of the third aspect, in a possible implementation manner of the third aspect, the method further includes:

[0107] The network device sends second information to the terminal device, where the second information is used to indicate a reference point of the terminal device for sending a reference signal.

[0108] With reference to the third aspect or a possible implementation manner of the third aspect, in a possible implementation manner of the third aspect, the second information is carried in a system broadcast message, a random access response message, or RRC dedicated signaling.

[0109] With reference to the third aspect or a possible implementation manner of the third aspect, in a possible implementation manner of the third aspect, one of the reference points is a frequency point occupied by one of a plurality of synchronization signal blocks.

[0110] With reference to the third aspect or a possible implementation manner of the third aspect, in a possible implementation manner of the third aspect, the first information is carried in a system broadcast message, a random access response message, or RRC dedicated signaling.

[0111] With reference to the third aspect or a possible implementation manner of the third aspect, in a possible implementation manner of the third aspect, the network device performs frequency domain resource allocation and / or bandwidth part configuration on the terminal device, including:

[0112] According to the reference point, the terminal device is allocated frequency domain resources and / or configured with a bandwidth part in combination with capability information of the terminal device and / or current service conditions of the network.

[0113] With reference to the third aspect or a possible implementation manner of the third aspect, in a possible implementation manner of the third aspect, the frequency domain resources and / or bandwidth part configured are used to send a paging message to the terminal device.

[0114] A fourth aspect provides a wireless communication method, including:

[0115] The terminal device receives first information sent by the network device, the first information being used to indicate a reference point of frequency domain resource allocation and / or bandwidth part configuration of the network device on the terminal device;

[0116] According to the reference point, the terminal device determines the reference point of frequency domain resource allocation and / or bandwidth part configuration of the network device on the terminal device.

[0117] With reference to the fourth aspect, in a possible implementation manner of the fourth aspect, the reference point of bandwidth part configuration of the network device on the terminal device is a first reference point, and the reference point of frequency domain resource allocation of the network device on the terminal device is a second reference point.

[0118] With reference to the fourth aspect or a possible implementation manner of the fourth aspect, in a possible implementation manner of the fourth aspect, the first information is used to indicate the first reference point and the second reference point.

[0119] With reference to the fourth aspect or a possible implementation manner of the fourth aspect, in a possible implementation manner of the fourth aspect, the first information is used to indicate the first reference point.

[0120] According to the reference point, the terminal device determines the reference point of frequency domain resource allocation and / or bandwidth part configuration of the network device on the terminal device.

[0121] According to the first reference point, the bandwidth part configuration of the network device on the terminal device is determined.

[0122] determining a second reference point according to the configured bandwidth part;

[0123] determining, according to the second reference point, frequency domain resource allocation of the terminal device by the network device.

[0124] With reference to the fourth aspect or a possible implementation manner of the fourth aspect, in a possible implementation manner of the fourth aspect, the second reference point is a frequency point occupied by a synchronization signal block closest to the configured bandwidth part.

[0125] With reference to the fourth aspect or a possible implementation manner of the fourth aspect, in a possible implementation manner of the fourth aspect, the first reference point and the second reference point are the same reference point; or,

[0126] the first reference point and the second reference point are different reference points.

[0127] With reference to the fourth aspect or a possible implementation manner of the fourth aspect, in a possible implementation manner of the fourth aspect, the method further includes:

[0128] determining, by the terminal device, a reference signal part corresponding to the bandwidth part according to a third reference point at which the network device transmits the reference signal and the configured bandwidth part.

[0129] With reference to the fourth aspect or a possible implementation manner of the fourth aspect, in a possible implementation manner of the fourth aspect, the method further includes:

[0130] receiving, by the terminal device, second information transmitted by the network device, the second information being used to indicate the third reference point.

[0131] With reference to the fourth aspect or a possible implementation manner of the fourth aspect, in a possible implementation manner of the fourth aspect, the second information is carried in a system broadcast message, a random access response message or RRC dedicated signaling.

[0132] With reference to the fourth aspect or a possible implementation manner of the fourth aspect, in a possible implementation manner of the fourth aspect, one of the reference points is a frequency point occupied by one of a plurality of synchronization signal blocks.

[0133] With reference to the fourth aspect or a possible implementation manner of the fourth aspect, in a possible implementation manner of the fourth aspect, the first information is carried in a system broadcast message, a random access response message or RRC dedicated signaling.

[0134] With reference to the fourth aspect or a possible implementation manner of the fourth aspect, in a possible implementation manner of the fourth aspect, the configured frequency domain resource and / or bandwidth part is used for sending a paging message to the terminal device.

[0135] A fifth aspect provides a wireless communication method, comprising:

[0136] The network device sends first information, the first information being used for indicating a first reference point at which the network device sends a reference signal to a first terminal device;

[0137] According to the first reference point, the network device sends the reference signal to the first terminal device.

[0138] Therefore, in the embodiments of the present application, the network device indicates the reference point for sending the reference signal to the terminal device, the configuration of the reference point can be flexible, and the network device indicates the reference point for sending the reference signal, which can be applied to the scenario where multiple synchronization signal blocks exist.

[0139] Furthermore, different terminal devices can use the same reference point of the reference signal, so as to multiplex the same reference signal sent by the network device; different terminal devices can also use different reference points of the reference signal, so as to send different reference signals to different terminal devices, and the above method can obtain the flexibility of reference signal sending.

[0140] With reference to the fifth aspect, in a possible implementation manner of the fifth aspect, the first information is carried in a system broadcast message, and the first terminal device comprises a terminal device within a coverage range of the network device.

[0141] With reference to the fifth aspect or a possible implementation manner of the fifth aspect, in a possible implementation manner of the fifth aspect, the first information is carried in a random access response message or radio resource control (RRC) dedicated signaling.

[0142] With reference to the fifth aspect or a possible implementation manner of the fifth aspect, in a possible implementation manner of the fifth aspect, the method further comprises:

[0143] The network device sends second information to a second terminal device, the second information being used for indicating a second reference point at which the network device sends a reference signal to the first terminal device;

[0144] According to the second reference point, the network device sends the reference signal to the second terminal device.

[0145] With reference to the fifth aspect or a possible implementation manner of the fifth aspect, in a possible implementation manner of the fifth aspect, the first reference point is the same as the second reference point; or,

[0146] The first reference point is different from the second reference point.

[0147] With reference to the fifth aspect or a possible implementation manner of the fifth aspect, in a possible implementation manner of the fifth aspect, one of the reference points is a frequency point occupied by one of the synchronization signal blocks.

[0148] The sixth aspect provides a wireless communication method, comprising:

[0149] The terminal device receives first information sent by the network device, wherein the first information is used to indicate a reference point at which the network device sends a reference signal.

[0150] According to the first information, the terminal device determines the reference point at which the network device sends the reference signal.

[0151] With reference to the sixth aspect, in a possible implementation manner of the sixth aspect, the method further comprises:

[0152] According to the reference point and a bandwidth part to which the terminal device is configured, the terminal device determines a reference signal part corresponding to the bandwidth part.

[0153] With reference to the sixth aspect or a possible implementation manner of the sixth aspect, in a possible implementation manner of the sixth aspect, the first information is carried in a system broadcast message, a random access response message or radio resource control (RRC) dedicated signaling.

[0154] With reference to the sixth aspect or a possible implementation manner of the sixth aspect, in a possible implementation manner of the sixth aspect, the reference point is a frequency point occupied by one of the synchronization signal blocks.

[0155] The seventh aspect provides a network device for performing the method in the first aspect or any possible implementation manner thereof, the third aspect or any possible implementation manner thereof or the fifth aspect or any possible implementation manner thereof. Specifically, the network device comprises function modules for performing the method in the first aspect or any possible implementation manner thereof, the third aspect or any possible implementation manner thereof or the fifth aspect or any possible implementation manner thereof.

[0156] The eighth aspect provides a terminal device for performing the method in the second aspect or any possible implementation manner thereof, the fourth aspect or any possible implementation manner thereof or the sixth aspect or any possible implementation manner thereof. Specifically, the terminal device comprises function modules for performing the method in the second aspect or any possible implementation manner thereof, the fourth aspect or any possible implementation manner thereof or the sixth aspect or any possible implementation manner thereof.

[0157] In a ninth aspect, a network device is provided, which includes a processor, a memory and a transceiver. The processor, the memory and the transceiver communicate with each other by internal connection paths, transfer control and / or data signals, so that the network device performs the method in the first aspect or any possible implementation thereof, the third aspect or any possible implementation thereof, or the fifth aspect or any possible implementation thereof.

[0158] In a tenth aspect, a terminal device is provided, which includes a processor, a memory and a transceiver. The processor, the memory and the transceiver communicate with each other by internal connection paths, transfer control and / or data signals, so that the terminal device performs the method in the second aspect or any possible implementation thereof, the fourth aspect or any possible implementation thereof, or the sixth aspect or any possible implementation thereof.

[0159] In an eleventh aspect, a computer readable medium is provided, which is used to store a computer program, the computer program including instructions for performing the method in any aspect or any possible implementation thereof.

[0160] In a twelfth aspect, a computer program product is provided, which includes instructions, when the instructions are run by a computer, the computer performs the method in any aspect or any possible implementation thereof. Specifically, the computer program product can run on the terminal device or the network device in any aspect. BRIEF DESCRIPTION OF DRAWINGS

[0161] Figure 1 is a schematic diagram of a communication system according to embodiments of the present application.

[0162] Figure 2 is a schematic flowchart of a wireless communication method according to embodiments of the present application.

[0163] Figure 3 is a schematic diagram of a synchronization signal block distribution according to embodiments of the present application.

[0164] Figure 4 is a schematic flowchart of a wireless communication method according to embodiments of the present application.

[0165] Figure 5 is a schematic diagram of a synchronization signal block distribution according to embodiments of the present application.

[0166] Figure 6 is a schematic flowchart of a wireless communication method according to embodiments of the present application.

[0167] Figure 7is a schematic flowchart of a wireless communication method according to an embodiment of the application.

[0168] Figure 8 is a schematic flowchart of a wireless communication method according to an embodiment of the application.

[0169] Figure 9 is a schematic flowchart of a wireless communication method according to an embodiment of the application.

[0170] Figure 10 is a schematic block diagram of a network device according to an embodiment of the application.

[0171] Figure 11 is a schematic block diagram of a terminal device according to an embodiment of the application.

[0172] Figure 12 is a schematic block diagram of a system chip according to an embodiment of the application.

[0173] Figure 13 is a schematic block diagram of a communication device according to an embodiment of the application. DETAILED DESCRIPTION

[0174] The technical solutions in the embodiments of the present application will be described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the scope of protection of the present application.

[0175] The technical solutions of the embodiments of the present application can be applied to various communication systems, for example, 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 future 5G system (which can also be referred to as a New Radio (NR) system, etc.

[0176] Figure 1 A wireless communication system 100 to which the embodiments of the present application are applied is shown. The wireless communication system 100 can include a network device 110. The network device 100 can be a device that communicates with a terminal device. The network device 100 can provide communication coverage for a specific geographic area and can communicate with terminal devices (for example, UEs) located in the coverage area. Optionally, the network device 100 can be a base station (Base Transceiver Station, BTS) in a GSM system or a CDMA system, a base station (NodeB, NB) in a WCDMA system, an evolved Node B (eNB or eNodeB) in an LTE system, or a radio controller in a cloud radio access network (CRAN), or the network device can be a relay station, an access point, a vehicle-mounted device, a wearable device, a network-side device in a future 5G network, or a network device in a future evolved public land mobile network (PLMN), etc.

[0177] The wireless communication system 100 further includes at least one terminal device 120 within the coverage of the network device 110. The terminal device 120 can be mobile or fixed. Optionally, the terminal device 120 can 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 can be a cellular telephone, a cordless telephone, a Session Initiation Protocol (SIP) phone, a Wireless Local Loop (WLL) station, a Personal Digital Assistant (PDA), a handheld device having wireless communication function, a computing device, or other processing device connected to a wireless modem, an in-vehicle device, a wearable device, a terminal device in a future 5G network, or a terminal device in a future evolved PLMN, etc.

[0178] Optionally, the terminal devices 120 can perform Device to Device (D2D) communication.

[0179] Optionally, the 5G system or network can also be referred to as a New Radio (NR) system or network.

[0180] Figure 1 Exemplarily, one network device and two terminal devices are shown, optionally, the wireless communication system 100 can include multiple network devices and each network device can include other number of terminal devices within its coverage, which are not limited by the embodiments of the present application.

[0181] Optionally, the wireless communication system 100 can further include a network controller, a mobility management entity, and other network entities, which are not limited by the embodiments of the present application.

[0182] It should be understood that the terms “system” and “network” are often used interchangeably herein. The term “and / or” herein is only used to describe the associated objects in association, which means that there can be three relationships, for example, A and / or B can mean that A exists alone, A and B exist together, and B exists alone. In addition, the character “ / ” herein generally represents an “or” relationship between the associated objects.

[0183] In the 5G system, a network device can send a terminal device a SS burst set containing multiple synchronization signal blocks (SS blocks), each of which contains a primary synchronization signal (PSS), a secondary synchronization signal (SSS), and a physical broadcasting channel (PBCH). The frequency position of the SS block in the system bandwidth is not limited to the center frequency position of the system bandwidth. The terminal device searches for the SS block in the system bandwidth to acquire time-frequency synchronization, acquire PBCH information, and perform radio resource management (RRM) measurement.

[0184] For the 5G system, a wideband component carrier with a large bandwidth, for example, a wideband component carrier with a bandwidth of 400 MHz or even 1 GHz, can be supported. Multiple SS blocks can be transmitted in the frequency domain in the wideband component carrier. If the future 5G system supports transmission of multiple SS blocks in the frequency domain in the wideband component carrier, the terminal can access the system by searching for any SS block in the multiple SS blocks.

[0185] Based on this, the embodiments of the present application provide a scheme for how to allocate frequency domain resources, configure a bandwidth part, and / or send a reference signal to a terminal device in the case where multiple synchronization signal blocks exist in a bandwidth component carrier.

[0186] Optionally, in the embodiments of the present application, the system bandwidth can include multiple bandwidth parts (BPs).

[0187] Optionally, the bandwidths of the multiple bandwidth parts can be the same or different.

[0188] Optionally, when the bandwidths of the multiple bandwidth parts are different, the multiple bandwidth parts can be completely non-overlapping. Alternatively, a small bandwidth part falls into a larger bandwidth part, and the center frequency of the small bandwidth part and the center frequency of the large bandwidth part can overlap or not overlap.

[0189] Optionally, the adjacent two bandwidth parts in the multiple bandwidth parts can be non-overlapping and non-gapped. Alternatively, the adjacent two bandwidth parts can be partially overlapping.

[0190] Optionally, in the embodiments of the present application, the frequency domain resource allocated by the frequency domain resource allocation can be a frequency domain resource in the configured bandwidth part, and the allocated frequency domain resource can be in units of frequency domain resource units (for example, a frequency domain resource occupied by one physical resource block (Physical Resource Block, PRB)).

[0191] Optionally, in the embodiments of the present application, the frequency domain resource allocation can be used for data transmission of the terminal device. The network device can allocate frequency domain resources according to the amount of data currently to be transmitted by the terminal device.

[0192] Optionally, in the embodiments of the present application, the bandwidth part configured for the terminal device can be semi-static, and the network device can configure the bandwidth part for the terminal device according to the capability of the terminal device.

[0193] Optionally, in the embodiments of the present application, the terminal device can also be configured with a corresponding bandwidth part according to the amount of data, for example, a small data amount transmission can be configured with a smaller bandwidth part, and a large data amount transmission can be configured with a larger bandwidth part or even a full bandwidth.

[0194] Optionally, in the embodiments of the present application, the bandwidth part configuration and / or frequency domain resource allocation for the terminal device can refer to the synchronization signal block detected by the terminal device. The following will be described in detail in combination with the method 200 shown in Figure 2 .

[0195] Figure 2 is a schematic flowchart of a wireless communication method 200 according to the embodiments of the present application. As shown in Figure 2 , the method 200 includes at least part of the following contents.

[0196] In 210, the network device receives a first message sent by a terminal device, and the first message is used to indicate a first synchronization signal block detected by the terminal device.

[0197] Optionally, in the embodiments of the present application, the first message can indicate the first synchronization signal block detected by the terminal device in a displayed or implicit manner.

[0198] In one implementation manner, the first message carries an index of the first synchronization signal block.

[0199] Specifically, a plurality of SS blocks are configured in the network, after the terminal device searches one of the SS blocks, the terminal device can obtain the index of the SS block, and the terminal device can report the index of the SS block searched by the terminal device to the network device through signaling. The signaling can be a radio resource control (RRC) connection request.

[0200] Optionally, the network device can pre-inform the terminal device of the index information of the SS block in the frequency through, for example, a system message bound with the SS block.

[0201] In an implementation manner, the first message indicates the first synchronization signal block to the network device through the occupied resource.

[0202] Specifically, in the embodiment of the present application, the terminal device can determine the resource for transmitting the first message according to the detected first synchronization signal block, indicate the synchronization signal block detected by the terminal device to the network device through the resource for transmitting the first message, and the network device can determine the synchronization signal block detected by the terminal device according to the resource for transmitting the first message.

[0203] Optionally, in the embodiment of the present application, the terminal device can determine the resource for transmitting the first message according to the correspondence between the resources occupied by the plurality of first messages and the plurality of synchronization signal blocks. Correspondingly, the network device can determine the synchronization signal block detected by the terminal device according to the correspondence between the resources occupied by the plurality of first messages and the plurality of synchronization signal blocks, and the resource for receiving the first message.

[0204] Optionally, in the embodiment of the present application, the network device can indicate the correspondence between the resources occupied by the plurality of first messages and the plurality of synchronization signal blocks to the terminal device. Optionally, the correspondence can be broadcast to the terminal device through a broadcast message.

[0205] Optionally, the first message can be a message in a random access process, for example, can be MSG1 or MSG3.

[0206] Optionally, in the embodiment of the present application, when the first message is a random access request message, the first message indicates the first synchronization signal block detected by the terminal device to the network device through the carried random access preamble.

[0207] Specifically, in the embodiment of the present application, the terminal device can determine the random access preamble according to the detected first synchronization signal block, and carry the random access preamble in the random access request message, and the network device can determine the synchronization signal block detected by the terminal device according to the random access preamble carried in the random access request message.

[0208] Optionally, in the embodiments of the present application, the terminal device can determine the random access preamble corresponding to the detected synchronization signal block according to the correspondence between the multiple random access preambles and the multiple synchronization signal blocks. Correspondingly, the network device can determine the synchronization signal block detected by the terminal device according to the correspondence between the multiple random access preambles and the multiple synchronization signal blocks and the received random access preamble.

[0209] Optionally, in the embodiments of the present application, the network device can indicate the correspondence between the multiple random access preambles and the multiple synchronization signal blocks to the terminal device. Optionally, the correspondence can be broadcast to the terminal device through a broadcast message.

[0210] In 220, the network device performs frequency domain resource allocation and / or bandwidth part configuration on the terminal device according to the first synchronization signal block.

[0211] Optionally, in the embodiments of the present application, the network device performs frequency domain resource allocation and / or bandwidth part configuration on the terminal device according to the frequency point occupied by the first synchronization signal block.

[0212] Optionally, the frequency point occupied by the synchronization signal block mentioned in the embodiments of the present application can be the center frequency point, the upper frequency point or the lower frequency point occupied by the synchronization signal block.

[0213] Optionally, in the embodiments of the present application, the network device determines the reference point according to the frequency point occupied by the first synchronization signal block, and performs frequency domain resource allocation and / or bandwidth part configuration on the terminal device according to the reference point.

[0214] In one implementation manner, the network device can determine the frequency point occupied by the first synchronization signal block as the reference point.

[0215] In one implementation manner, the network device can determine the second synchronization signal block according to the frequency point occupied by the first synchronization signal block, and determine the reference point according to the frequency point occupied by the second synchronization signal block.

[0216] Specifically, the network device determines the second synchronization signal block when the interval between the first synchronization signal block and the frequency domain resource to be allocated to the terminal device is greater than or equal to a predetermined value. The network device determines the reference point according to the frequency point occupied by the second synchronization signal block.

[0217] Therefore, through this implementation manner, it can be avoided that too much signaling overhead is caused due to too many fields required for indication because the interval between the reference point and the allocated frequency domain resource or the configured bandwidth part is too large when the frequency domain resource is allocated to the terminal device or the bandwidth part is configured.

[0218] Optionally, the network device can determine the frequency point occupied by the second synchronization signal block as a reference point for frequency domain resource allocation and / or bandwidth part configuration.

[0219] Optionally, in the embodiments of the present application, the reference point for frequency domain resource allocation (which can be referred to as a second reference point) and the reference point for bandwidth part configuration (which can be referred to as a first reference point) can be the same reference point or different reference points.

[0220] For example, the frequency point occupied by the first synchronization signal block can be directly determined as the reference point for both frequency domain resource allocation and bandwidth part configuration.

[0221] For example, the network device can determine the frequency point occupied by the first synchronization signal block as the reference point for bandwidth part configuration, and determine the reference point for frequency domain resource allocation based on the configured bandwidth part. Wherein, based on the configured bandwidth part, the reference point for frequency domain resource allocation can be: the frequency point occupied by the synchronization signal block closest to the configured bandwidth part is determined as the reference point for frequency domain resource allocation, or a synchronization signal block can be determined from the synchronization signal blocks whose frequency domain distance from the configured bandwidth part is less than or equal to a predetermined value, and the reference point for frequency domain resource allocation is determined based on the determined synchronization signal block.

[0222] For example, the frequency point occupied by the second synchronization signal block can be determined as the reference point for bandwidth part configuration, and the reference point for frequency domain resource allocation is determined based on the configured bandwidth part. Wherein, based on the configured bandwidth part, the reference point for frequency domain resource allocation can be: the frequency point occupied by the synchronization signal block closest to the configured bandwidth part is determined as the reference point for frequency domain resource allocation, or a synchronization signal block can be determined from the synchronization signal blocks whose frequency domain distance from the configured bandwidth part is less than or equal to a predetermined value, and the reference point for frequency domain resource allocation is determined based on the determined synchronization signal block.

[0223] For ease of understanding, the following will be described in detail in combination with Figure 3 as an example.

[0224] For example Figure 3 As shown in the figure, two synchronization signal block (SS block, SSB) positions are distributed in the wideband member carrier. If the network device determines that the SSB detected by the terminal device is SSB1, the network device can configure the terminal with bandwidth part 0 or bandwidth part 1 and perform service scheduling (including frequency domain resource allocation) on the terminal device in bandwidth part 0 or bandwidth part 1 based on the frequency point where SSB1 is located as a reference point.

[0225] Or, if the terminal device retrieves SSB1, and reports SSB1 to the network device through the foregoing method, but the network device expects to configure bandwidth part 2 for the terminal device, the network device can take the frequency point where SSB2 is located as the reference point of the terminal device. In this way, the network device can configure bandwidth part 2 for the terminal device and perform service scheduling on the terminal device in bandwidth part 2 based on the frequency point where SSB1 is located as the reference point.

[0226] Through such an operation, on the one hand, a flexible configuration of a bandwidth part in which the terminal works and a flexible frequency reference point of resource allocation are provided, and on the other hand, since the network can reduce the frequency interval between the frequency reference point and the actually allocated frequency resource through the selection of the frequency reference point, the resource indication signaling overhead in the downlink control channel can be effectively reduced.

[0227] Optionally, in the embodiment of the present application, when it is determined that the reference point for bandwidth part configuration or frequency domain resource allocation is based on the frequency point where the second synchronization signal block is located, since the synchronization signal block based on which the reference point is determined is changed, the reference point for bandwidth part configuration or frequency domain resource allocation can be indicated to the terminal device, wherein the reference point can be indicated to the terminal device by directly notifying the terminal device of the frequency point where the reference point is located, or the terminal device can be notified of the second synchronization signal block based on which the reference point is determined. Wherein the indication information can be carried in a random access response message (at this time, the foregoing first message can be a random access request message), or in RRC dedicated signaling (for example, an RRC connection establishment response message, at this time, the first message can be an RRC connection establishment request message).

[0228] Optionally, the RRC dedicated signaling in the embodiment of the present application includes an RRC connection establishment command or an RRC reconfiguration command

[0229] Optionally, in the embodiment of the present application, the network device can send information for indicating the frequency domain relationship between a plurality of synchronization signal blocks, the plurality of synchronization signal blocks including the first synchronization signal block and the second synchronization signal block.

[0230] Based on this, the terminal device can determine the frequency point where the second synchronization signal block is located according to the frequency domain relationship and the frequency point where the first synchronization signal block is located, and if the terminal device is notified by the network device that the synchronization signal block based on which the reference point is determined is the second synchronization signal block, the terminal device can determine the reference point of the frequency domain resource allocation and / or bandwidth part configuration of the terminal device by the network device based on the same rule as the network device.

[0231] Optionally, in the embodiments of the present application, the indication information can also be sent to the terminal device to indicate the reference point for the network device to allocate frequency domain resources and / or configure bandwidth parts to the terminal device when the terminal device does not change the directly determined synchronization signal block of the reference point. The reference point notified to the terminal device can be the frequency point occupied by the reference point directly notified to the terminal device, or a confirmation message can be sent to the terminal device, and the reference point is determined by the network device based on the synchronization signal block detected by the terminal device. The indication information can be carried in the random access response message (at this time, the first message can be the random access request message), or in the RRC dedicated signaling (for example, the RRC connection establishment response message, at this time, the first message can be the RRC connection establishment request message).

[0232] Optionally, in the embodiments of the present application, the network device sends information to the terminal device, and the information is used to indicate the size of the allocated resources and / or the offset relative to the reference point, and / or the number of configured bandwidth parts and / or the offset relative to the reference point. Correspondingly, the terminal device can determine the frequency domain resources allocated by the network device and / or the configured bandwidth parts for the terminal device according to the information sent by the network device and the reference point.

[0233] The offset of the allocated resources relative to the reference point can be the offset of the upper frequency point of the allocated resources relative to the reference point, the offset of the center frequency point of the allocated resources relative to the reference point, or the offset of the lower frequency point of the allocated resources relative to the reference point.

[0234] The offset of the configured bandwidth part relative to the reference point can be the offset of the upper frequency point of the configured bandwidth part relative to the reference point, the offset of the center frequency point of the configured bandwidth part relative to the reference point, or the offset of the lower frequency point of the configured bandwidth part relative to the reference point.

[0235] Optionally, in the embodiments of the present application, the network device allocates frequency domain resources and / or configures bandwidth parts to the terminal device in combination with the capability information of the terminal device and / or the current service situation of the network.

[0236] For example, the network device can allocate frequency domain resources and / or configure bandwidth parts to the terminal device in combination with the capability information of the terminal device, the amount of data currently required to be transmitted by the terminal device, and / or the occupation situation of each bandwidth and / or resource by other terminal devices (for considering load balancing).

[0237] Optionally, in the embodiments of the present application, the network device can send a reference signal to the terminal device with a third reference point.

[0238] Optionally, in the embodiments of the present application, the network device sends a reference signal to one side of the frequency with the third reference point as the starting point.

[0239] Alternatively, in the embodiments of the present application, the network device can send the reference signal to both sides of the reference point based on the reference point.

[0240] Alternatively, when the network device does not need to send the reference signal in a frequency range starting from the third reference point, it can be assumed that the reference signal is still sent starting from the third reference point, but it is not sent in the frequency range and the remaining part of the reference signal is sent in other frequency ranges.

[0241] For example, the third reference point is at a frequency position of 20 MHz, and the network device needs to occupy 20 MHz to send the complete reference signal, and the frequency range allocated to the terminal is 0-10 MHz. One method is to send the reference signal in the range of 0-20 MHz; the second method is that, since in a specific scenario, 10 MHz-20 MHz does not need to send a reference sequence (such as no data and reference signal needs to be sent to the terminal in this bandwidth), the reference sequence part a (which originally occupies 10 MHz-20 MHz) that constitutes the reference signal is no longer sent, and the reference signal part b in the reference signal is sent in the range of 0 MHz-10 MHz, wherein the reference signal part a and the reference signal b constitute the complete reference signal.

[0242] Optionally, in the embodiments of the present application, the terminal device can receive the reference signal in the configured bandwidth range.

[0243] Optionally, in the embodiments of the present application, the terminal device can determine, according to the third reference point of the network device sending the reference signal and the configured bandwidth part, the reference signal part corresponding to the bandwidth part as a local sequence, and receive the reference signal in the configured bandwidth part, and perform channel measurement through the local sequence and the received reference signal, so as to obtain the corresponding channel quality.

[0244] Optionally, in the embodiments of the present application, the network device can send information to the terminal device to inform the third reference point.

[0245] Optionally, in the embodiments of the present application, the third reference point can be the same reference point as the first reference point and / or the second reference point.

[0246] Optionally, in the embodiments of the present application, the third reference point can be informed to the terminal device by a broadcast message, at this time, the terminal devices in the range of the broadcast message can share the same third reference point.

[0247] Optionally, in the embodiments of the present application, the third reference point can be informed to the terminal device through a random access response message or RRC dedicated signaling (RRC connection establishment response message), at this time, the third reference points corresponding to multiple terminal devices can be the same or different.

[0248] Therefore, in the embodiments of the present application, the network device can combine the synchronization signal block currently detected by the terminal device to perform frequency domain resource allocation and / or bandwidth part configuration on the terminal device, and flexible frequency domain resource allocation and / or bandwidth part configuration can be realized.

[0249] It should be understood that although most of the embodiments of the present application describe the reference point for determining the frequency domain resource allocation and / or bandwidth part configuration according to the synchronization signal block, the embodiments of the present application are not limited thereto, for example, the network device can determine the working condition of the terminal device according to the synchronization signal block detected by the terminal device, and combine the working condition to perform frequency domain resource allocation and / or system bandwidth configuration.

[0250] Figure 4 is a schematic flow chart of a wireless communication method 300 according to the embodiments of the present application. As shown in the figure, the method includes at least part of the following contents. Figure 4

[0251] In 310, the network device sends first information, the first information being used to indicate a reference point of frequency domain resource allocation and / or bandwidth part configuration on the terminal device by the network device. Optionally, the first information is carried in a system broadcast message, a random access response message or RRC dedicated signaling.

[0252] In 320, the network device performs frequency domain resource allocation and / or bandwidth part configuration on the terminal device according to the reference point.

[0253] Optionally, in the embodiments of the present application, the reference point of bandwidth part configuration on the terminal device by the network device is a first reference point, and the reference point of frequency domain resource allocation on the terminal device by the network device is a second reference point.

[0254] Optionally, in the embodiments of the present application, the first reference point and the second reference point are the same reference point; or, the first reference point and the second reference point are different reference points.

[0255] Optionally, in the embodiments of the present application, the first information is used to indicate the first reference point and the second reference point.

[0256] ​Optionally, in the embodiment of the present application, the first information is used to indicate a first reference point; bandwidth part configuration is performed according to the first reference point; a second reference point is determined according to the configured bandwidth part; and frequency domain resource allocation is performed according to the second reference point. The second reference point can be a frequency point occupied by a synchronization signal block closest to the configured bandwidth part.

[0257] Optionally, in the embodiment of the present application, the network device sends a reference signal to the terminal device according to the third reference point.

[0258] Optionally, in the embodiment of the present application, the network device sends information to the terminal device, and the information is used to indicate a reference point for the terminal device to send a reference signal. The information can be carried in a system broadcast message, a random access response message or RRC dedicated signaling.

[0259] Optionally, in the embodiment of the present application, one of the reference points is a frequency point occupied by one of the synchronization signal blocks.

[0260] Optionally, in the embodiment of the present application, frequency domain resource allocation and / or bandwidth part configuration are performed on the terminal device according to the reference point, in combination with capability information of the terminal device and / or current service situation of the network.

[0261] Optionally, the frequency domain resource and / or bandwidth part configured are used to send a paging message to the terminal device.

[0262] Optionally, in the embodiment of the present application, the network device can determine a reference point for frequency domain resource allocation and / or bandwidth part configuration of the terminal device according to a type of the terminal device.

[0263] For different types of terminals, the network device can select different SSBs as reference points for sending a paging message. For example, as Figure 5 For a terminal with a bandwidth less than or equal to 20 MHz, the network device can select an SSB with an index of 1 as a reference point for sending a paging message, and transmit a narrowband paging message. For a terminal with a bandwidth greater than 20 MHz, the network device can select an SSB with an index of 2 as a reference point for sending a paging message, and transmit a wideband paging message.

[0264] Optionally, in the embodiment of the present application, the network device sends a reference signal to the terminal device according to the third reference point.

[0265] Optionally, the network device sends information to the terminal device, and the information is used to indicate the third reference point for the terminal device to send a reference signal.

[0266] Therefore, in the embodiments of the present application, the network device indicates the reference point for frequency domain resource allocation and / or bandwidth part configuration to the terminal device, which can flexibly configure the reference point, avoid using a fixed reference point of the system, and avoid the problem that a center frequency point of the system bandwidth is fixedly used as the reference point in the case of a large system bandwidth, which causes a long field of the indicated allocated frequency domain resource and / or configured bandwidth part to the terminal device, and increases signaling overhead. Moreover, the network device indicates the reference point for frequency domain resource allocation and / or bandwidth part configuration, which can be applied to a scenario where multiple synchronization signal blocks exist.

[0267] Figure 6 is a schematic flowchart of a wireless communication method 400 according to an embodiment of the present application. As shown in the figure, the method includes at least part of the following content. Figure 6

[0268] In 410, the network device sends first information, which is used to indicate a first reference point at which the network device sends a reference signal to a first terminal device.

[0269] In 420, the network device sends the reference signal to the first terminal device according to the first reference point.

[0270] Optionally, the first information is carried in a system broadcast message, and the first terminal device includes a terminal device within a coverage range of the network device.

[0271] Optionally, the first information is carried in a random access response message or radio resource control (RRC) dedicated signaling.

[0272] Optionally, the network device sends second information to a second terminal device, which is used to indicate a second reference point at which the network device sends a reference signal to a first terminal device; and the network device sends the reference signal to the second terminal device according to the second reference point.

[0273] Optionally, the first reference point is the same as the second reference point; or,

[0274] The first reference point is different from the second reference point.

[0275] Optionally, one of the reference points is a frequency point occupied by one of multiple synchronization signal blocks.

[0276] Therefore, in the embodiments of the present application, the network device indicates the reference point for frequency domain resource allocation and / or bandwidth part configuration to the terminal device, which can flexibly configure the reference point, avoid using a fixed reference point of the system, and avoid the problem that a center frequency point of the system bandwidth is fixedly used as the reference point in the case of a large system bandwidth, which causes a long field of the indicated allocated frequency domain resource and / or configured bandwidth part to the terminal device, and increases signaling overhead. Moreover, the network device indicates the reference point for frequency domain resource allocation and / or bandwidth part configuration, which can be applied to a scenario where multiple synchronization signal blocks exist.

[0277] ​And further, different terminal devices can use the same reference point of the reference signal, so as to multiplex the same reference signal sent by the network device; different terminals can also use different reference points of the reference signal, so as to send different reference signals for different terminals, and the above method can obtain the flexibility of reference signal sending.

[0278] Figure 7 is a schematic flowchart of a wireless communication method 500 according to an embodiment of the present application. As shown in Figure 7 the wireless communication method 500 includes at least part of the following contents.

[0279] In 510, the terminal device sends a first message to the network device, and the first message is used to indicate a first synchronization signal block detected by the terminal device.

[0280] In 520, according to the first synchronization signal block, the terminal device determines the frequency domain resource allocation and / or bandwidth part configuration of the terminal device by the network device.

[0281] Optionally, according to the frequency point occupied by the first synchronization signal block, the terminal device determines the frequency domain resource allocation and / or bandwidth part configuration of the terminal device by the network device.

[0282] Optionally, according to the frequency point occupied by the first synchronization signal block, a reference point of the frequency domain resource allocation and / or bandwidth part configuration of the terminal device by the network device is determined; according to the reference point, the terminal device determines the frequency domain resource allocation and / or bandwidth part configuration of the terminal device by the network device.

[0283] Optionally, the terminal device determines the frequency point occupied by the first synchronization signal block as the reference point.

[0284] Optionally, the reference point of the bandwidth part configuration of the terminal device by the network device is a first reference point, and the reference point of the frequency domain resource allocation of the terminal device by the network device is a second reference point.

[0285] Optionally, the first reference point is the frequency point occupied by the first synchronization signal block.

[0286] Optionally, the second reference point is the frequency point occupied by the nearest synchronization signal block of the configured bandwidth part.

[0287] Optionally, the first reference point and the second reference point are the same reference point; or, the first reference point and the second reference point are different reference points.

[0288] Optionally, the terminal device receives information sent by the network device, the information being used for indicating the allocated resource size and / or offset relative to the reference point, and / or the number of configured bandwidth parts and / or offset relative to the reference point; and the terminal device determines the frequency domain resource allocation and / or bandwidth part configuration made by the network device to the terminal device according to the information and the reference point.

[0289] Optionally, the terminal device can determine the reference signal part corresponding to the bandwidth part according to a third reference point at which the network device sends a reference signal, and the configured bandwidth part.

[0290] Optionally, the terminal device receives information sent by the network device, the information being used for indicating the third reference point.

[0291] Optionally, the first message carries an index of the first synchronization signal block.

[0292] Optionally, the first message indicates the first synchronization signal block to the network device by the occupied resource.

[0293] Optionally, the terminal device receives information sent by the network device, the information being used for indicating a correspondence relationship between a plurality of resources occupied by the first message and a plurality of synchronization signal blocks; and the terminal device determines the resource for sending the first message according to the correspondence relationship indicated by the information; and the terminal device sends the first message on the determined resource.

[0294] Optionally, the first message is a message in a random access procedure.

[0295] Optionally, the first message is a random access request message, and the first message indicates the first synchronization signal block to the network device by a carried random access preamble.

[0296] Optionally, the terminal device receives information sent by the network device, the information being used for indicating a correspondence relationship between a plurality of preambles and a plurality of synchronization signal blocks; and the terminal device determines a random access preamble according to the first synchronization signal block and the correspondence relationship indicated by the information; and the terminal device sends the first message carrying the random access preamble.

[0297] Figure 8 FIG. 6 is a schematic flowchart of a wireless communication method 600 according to an embodiment of the present application. As shown in FIG. 6, the method 600 includes at least part of the following. Figure 8

[0298] ​In 610, the terminal device receives first information sent by the network device, the first information being used for indicating a reference point of frequency domain resource allocation and / or bandwidth part configuration of the terminal device by the network device. The first information is optionally carried in a system broadcast message, a random access response message or RRC dedicated signaling.

[0299] In 620, according to the reference point, the terminal device determines the reference point of frequency domain resource allocation and / or bandwidth part configuration of the terminal device by the network device.

[0300] Optionally, the reference point of bandwidth part configuration of the terminal device by the network device is a first reference point, and the reference point of frequency domain resource allocation of the terminal device by the network device is a second reference point.

[0301] Optionally, the first information is used for indicating the first reference point and the second reference point.

[0302] Optionally, the first information is used for indicating the first reference point; according to the first reference point, the terminal device determines the bandwidth part configuration of the terminal device by the network device; according to the configured bandwidth part, the second reference point is determined; and according to the second reference point, the terminal device determines the frequency domain resource allocation of the terminal device by the network device.

[0303] Optionally, the second reference point is a frequency point occupied by a synchronization signal block closest to the configured bandwidth part.

[0304] Optionally, the first reference point and the second reference point are the same reference point; or,

[0305] The first reference point and the second reference point are different reference points.

[0306] Optionally, according to a third reference point at which the network device sends a reference signal and the configured bandwidth part, the terminal device determines a reference signal part corresponding to the bandwidth part.

[0307] Optionally, the terminal device receives information sent by the network device, the information being used for indicating the third reference point. The information is optionally carried in a system broadcast message, a random access response message or RRC dedicated signaling.

[0308] Optionally, one of the reference points is a frequency point occupied by one of a plurality of synchronization signal blocks.

[0309] Optionally, the configured frequency domain resource and / or bandwidth part is used for sending a paging message to the terminal device.

[0310] Figure 9is a schematic flowchart of a wireless communication method 700 according to an embodiment of the present application. As shown in Figure 9 the method 700 includes at least part of the following.

[0311] In 710, the terminal device receives first information sent by the network device, the first information being used for indicating a reference point at which the network device sends a reference signal;

[0312] In 720, according to the first information, the terminal device determines the reference point at which the network device sends the reference signal.

[0313] Optionally, according to the reference point and a bandwidth part to which the terminal device is configured, the terminal device determines a reference signal part corresponding to the bandwidth part.

[0314] Optionally, the first information is carried in a system broadcast message, a random access response message or radio resource control (RRC) dedicated signaling.

[0315] Optionally, the reference point is a frequency point occupied by one of a plurality of synchronization signal blocks.

[0316] It should be understood that although the methods 200-700 are described respectively above, this does not mean that the methods 200-700 are independent, the description of each method can be referred to each other, and the optional schemes of each method can be used in combination without contradiction, for example, the description about the reference signal in the method 200 can be applicable to the methods 300-700. For brevity, the embodiments of the present application will not be described again.

[0317] Figure 10 is a schematic block diagram of a network device 800 according to an embodiment of the present application. As shown in Figure 10 the network device 800 includes a processing unit 810 and a communication unit 820.

[0318] Optionally, the communication unit 820 is configured to receive a first message sent by a terminal device, the first message being used for indicating a first synchronization signal block detected by the terminal device; and the processing unit 810 is configured to perform frequency domain resource allocation and / or bandwidth part configuration on the terminal device according to the first synchronization signal block.

[0319] Optionally, the communication unit 820 is configured to send first information, the first information being used for indicating a reference point at which the network device performs frequency domain resource allocation and / or bandwidth part configuration on a terminal device; and the processing unit 810 is configured to perform frequency domain resource allocation and / or bandwidth part configuration on the terminal device according to the reference point.

[0320] Optionally, the processing unit 810 is configured to determine a first reference point at which the network device transmits a reference signal to the first terminal device; and the communication unit 820 is configured to transmit first information indicating the first reference point at which the network device transmits the reference signal to the first terminal device, and transmit the reference signal to the first terminal device according to the first reference point.

[0321] It should be understood that the network device 800 can correspond to the network device in the method embodiments, and can implement the functions performed by the network device in any of the optional schemes of the method embodiments. For brevity, details are not repeated here.

[0322] Figure 11 is a schematic block diagram of a terminal device 900 according to an embodiment of the present application. As shown in the figure, the terminal device 900 includes a communication unit 910 and a processing unit 920. Figure 11

[0323] The communication unit 910 is configured to transmit a first message to a network device, the first message being used to indicate a first synchronization signal block detected by the terminal device.

[0324] The processing unit 920 is configured to determine, according to the first synchronization signal block, frequency domain resource allocation and / or bandwidth part configuration of the terminal device performed by the network device.

[0325] Optionally, the communication unit 910 is configured to receive first information transmitted by a network device, the first information being used to indicate a reference point at which the network device transmits a reference signal; and the processing unit 920 is configured to determine, according to the first information, the reference point at which the network device transmits the reference signal.

[0326] Optionally, the communication unit 910 is configured to receive first information transmitted by a network device, the first information being used to indicate a reference point at which the network device performs frequency domain resource allocation and / or bandwidth part configuration of the terminal device; and the processing unit 920 is configured to determine, according to the reference point, the reference point at which the network device performs the frequency domain resource allocation and / or the bandwidth part configuration of the terminal device.

[0327] It should be understood that the terminal device 900 can correspond to the terminal device in the method embodiments, and can implement the functions performed by the terminal device in any of the optional schemes of the method embodiments. For brevity, details are not repeated here.

[0328] Figure 12 is a schematic structural diagram of a system chip 1000 according to an embodiment of the present application. Figure 12 ​The system chip 1000 includes an input interface 1001, an output interface 1002, a processor 1003, and a memory 1004, which can be connected through internal communication connection lines. The processor 1003 is configured to execute code in the memory 604.

[0329] Optionally, when the code is executed, the processor 1003 implements the method performed by the network device in the method embodiment. For brevity, details are not repeated here.

[0330] Optionally, when the code is executed, the processor 1003 implements the method performed by the terminal device in the method embodiment. For brevity, details are not repeated here.

[0331] Figure 13 is a schematic block diagram of a communication device 1100 according to an embodiment of the present application. As shown in the figure, the communication device 1100 includes a processor 1110 and a memory 1120. The memory 1120 can store program code, and the processor 1110 can execute the program code stored in the memory 1120. Figure 13

[0332] Optionally, as shown in the figure, the communication device 1100 can include a transceiver 1130, and the processor 1110 can control the transceiver 1130 to communicate externally. Figure 13

[0333] Optionally, the processor 1110 can call the program code stored in the memory 1120 to perform the corresponding operation of the master service node in the method embodiment. For brevity, details are not repeated here.

[0334] Optionally, the processor 1110 can call the program code stored in the memory 1120 to perform the corresponding operation of the terminal device in the method embodiment. For brevity, details are not repeated here.

[0335] ​​It should be understood that the processor of the embodiments of the present application can be an integrated circuit chip with a processing capability of signals. In the implementation process, each step of the method embodiments described above can be completed by the integrated logic circuit of hardware in the processor or the instructions in the form of software. The processor described above can be a general processor, a digital signal processor (DSP), an application specific integrated circuit (ASIC), a field programmable gate array (FPGA) or other programmable logic devices, discrete gates or transistor logic devices, discrete hardware components. The disclosed methods, steps and logic block diagrams in the embodiments of the present application can be implemented or executed. The general processor can be a microprocessor or the processor can also be any conventional processor or the like. The steps of the method disclosed in conjunction with the embodiments of the present application can be directly embodied as a hardware coding processor for execution, or a combination of hardware and software modules in the coding processor for execution. The software module can be located in a random access memory, a flash memory, a read only memory, a programmable read only memory or an electrically erasable programmable memory, a register or other mature storage medium in the art. The storage medium is located in the storage, and the processor reads the information in the storage, and combines the hardware to complete the steps of the above method.

[0336] It can be appreciated that the memory in the embodiments of the present application can be a volatile memory or a nonvolatile memory, or can include both volatile and nonvolatile memory. Among them, the nonvolatile memory can be a Read-Only Memory (ROM), a Programmable ROM (PROM), an Erasable PROM (EPROM), an Electrically EPROM (EEPROM), or a flash memory. The volatile memory can be a Random Access Memory (RAM) used as an external cache. By way of example, and not limitation, many forms of RAM can be used, such as a Static RAM (SRAM), a Dynamic RAM (DRAM), a Synchronous DRAM (SDRAM), a Double Data Rate SDRAM (DDR SDRAM), an Enhanced SDRAM (ESDRAM), a Synchlink DRAM (SLDRAM), and a Direct Rambus RAM (DR RAM). It should be noted that the memory of the system and method described herein is intended to include, but not be limited to, these and any other suitable types of memory.

[0337] The embodiments of the present application also provide a computer program product including instructions, when the computer runs the instructions of the computer program product, the computer executes the bandwidth configuration method of the above-mentioned method embodiments. Specifically, the computer program product can run on the above-mentioned network device and terminal device.

[0338] Those of ordinary skill in the art can realize that the units and algorithm steps of each example described in combination with the embodiments disclosed herein can be realized in electronic hardware, or a combination of computer software and electronic hardware. Whether the functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. A person skilled in the art can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of the present application.

[0339] Those skilled in the art can clearly understand that, for the convenience and brevity of the description, the specific working process of the above-described system, device and unit can refer to the corresponding process in the foregoing method embodiments, which will not be described here.

[0340] In several embodiments provided in the present application, it should be understood that the disclosed system, device and method can be implemented in other manners. For example, the described device embodiments are merely schematic. For example, the division of the units is only a logical function division. There can be another division manner for the actual implementation, for example, multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. In addition, the displayed or discussed mutual couplings or direct couplings or communication connections between the units can be indirect couplings or communication connections through some interfaces, devices or units, and can be in electrical, mechanical or other forms.

[0341] The units described as separate components can or can not be physically separate, and the components shown as units can or can not be physical units, i.e., can be located in one place, or can be distributed on multiple network units. Some or all of the units can be selected according to actual needs to achieve the purposes of the embodiments.

[0342] In addition, each functional unit in the various embodiments of the present application can be integrated in one processing unit, or each unit can be a physically separate unit, or two or more units can be integrated in one unit.

[0343] If the 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 technical solutions of the present application essentially or the parts that make contributions to the prior art or parts of the technical solutions can be embodied in the form of a software product. The computer software product is stored in a storage medium and includes several instructions for causing 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 the various embodiments of the present application. The aforementioned storage medium includes: a U disk, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk, and various media that can store program codes.

[0344] The above is merely specific embodiments 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 replacements within the technical scope disclosed in the present application, which should be covered within 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 method of wireless communication, the method comprising: The method comprises: The network device sends a reference signal to the terminal device according to a third reference point; The third reference point and the first reference point are the same reference point, and the first reference point is a reference point for bandwidth part configuration; The network device sends a reference signal to the terminal device according to the third reference point, comprising: The network device sends a reference signal to the terminal device, wherein the reference signal is sent with the third reference point as the starting point; The network device sends a reference signal to the terminal device, wherein the reference signal is sent with the third reference point as the starting point, comprising: The network device sends the reference signal to the terminal device within the frequency range allocated to the terminal device with the third reference point as the starting point; and The network device does not send the reference signal to the terminal device outside the frequency range allocated to the terminal device; A first frequency range starting from the third reference point is not allocated to the terminal device.

2. The method of claim 1, wherein, The method further comprises: The network device sends first information to the terminal device, and the first information is used to indicate the reference point of the frequency domain resource allocation and / or bandwidth part configuration of the terminal device by the network device.

3. The method of claim 2, wherein, The method further comprises: The network device configures the frequency domain resource and / or bandwidth part for the terminal device according to the reference point indicated by the first information.

4. The method of claim 3, wherein, The bandwidth part is configured by the first reference point, and the first information is specifically used to indicate the first reference point; The frequency domain resource is configured by a second reference point, which is determined according to the configured bandwidth part.

5. The method according to claim 3 or 4, characterized in that, The network device configures the frequency domain resource and / or bandwidth part for the terminal device according to the reference point indicated by the first information, comprising: The network device sends third information to the terminal device, and the third information is used to indicate the offset of the configured bandwidth part relative to the reference point.

6. A method of wireless communication, the method comprising: The method comprises: The terminal device receives a reference signal sent by a network device according to a third reference point; The third reference point and the first reference point are the same reference point, and the first reference point is a reference point for bandwidth part configuration; The terminal device receives a reference signal sent by a network device according to a third reference point, comprising: The terminal device receives the reference signal sent by the network device, wherein the reference signal is sent with the third reference point as the starting point; The terminal device receives the reference signal sent by the network device, wherein the reference signal is sent with the third reference point as the starting point, comprising: The terminal device receives the reference signal sent by the network device within the frequency range allocated to the terminal device with the third reference point as the starting point; The network device does not send the reference signal to the terminal device outside the frequency range allocated to the terminal device; A first frequency range starting from the third reference point is not allocated to the terminal device.

7. The method of claim 6, wherein, The method further comprises: The terminal device receives first information sent by the network device, and the first information is used to indicate a reference point for frequency domain resource allocation and / or bandwidth part configuration of the terminal device by the network device.

8. The method of claim 7, wherein, the reference point indicated by the first information is used for the network device to configure frequency domain resources and / or a bandwidth part for the terminal device.

9. The method of claim 8, wherein, the bandwidth part is configured by the first reference point, and the first information is specifically used to indicate the first reference point; the frequency domain resources are configured by a second reference point, and the second reference point is determined according to the configured bandwidth part.

10. The method according to claim 8 or 9, characterized in that, The method further comprises: The terminal device receives third information sent by the network device, and the third information is used to indicate an offset of the configured bandwidth part relative to a reference point.

11. A network device, comprising: includes: a sending unit configured to send a reference signal to the terminal device according to a third reference point; wherein the third reference point and the first reference point are the same reference point, and the first reference point is a reference point for bandwidth part configuration; wherein the sending unit is further configured to: send a reference signal to the terminal device, wherein the reference signal is sent with the third reference point as a starting point; wherein the sending unit is further configured to: send the reference signal to the terminal device within a frequency range allocated for the terminal device with the third reference point as a starting point; and not send the reference signal to the terminal device outside the frequency range allocated for the terminal device. wherein a first frequency range starting from the third reference point is not allocated to the terminal device.

12. The network device of claim 11, wherein, The sending unit is further configured to: send first information to the terminal device, and the first information is used to indicate a reference point for frequency domain resource allocation and / or bandwidth part configuration of the terminal device by the network device.

13. The network device of claim 12, wherein, The network device further comprises: a configuration unit configured to configure frequency domain resources and / or a bandwidth part for the terminal device according to the reference point indicated by the first information.

14. The network device of claim 13, wherein, the bandwidth part is configured by the first reference point, and the first information is specifically used to indicate the first reference point; the frequency domain resources are configured by a second reference point, and the second reference point is determined according to the configured bandwidth part.

15. The network device according to claim 13 or 14, characterized in that, The configuration unit is further configured to: send third information to the terminal device, and the third information is used to indicate an offset of the configured bandwidth part relative to a reference point.

16. A terminal device, comprising: includes: a receiving unit configured to receive a reference signal sent by the network device according to a third reference point; wherein the third reference point and the first reference point are the same reference point, and the first reference point is a reference point for bandwidth part configuration; wherein the receiving unit is further configured to: receive the reference signal sent by the network device, wherein the reference signal is sent with the third reference point as a starting point; wherein the receiving unit is further configured to: receive the reference signal sent by the network device within a frequency range allocated for the terminal device with the third reference point as a starting point; wherein the network device does not send the reference signal to the terminal device outside the frequency range allocated for the terminal device. A first frequency range from the third reference point is not allocated to the terminal device.

17. The terminal device of claim 16, wherein, The receiving unit is further configured to: receive first information sent by the network device, the first information being used to indicate a reference point of frequency domain resource allocation and / or bandwidth part configuration of the network device to a terminal device.

18. The terminal device of claim 17, wherein, the reference point indicated by the first information is used by the network device to configure frequency domain resources and / or a bandwidth part for the terminal device.

19. The terminal device of claim 18, wherein, The bandwidth part is configured by the first reference point, and the first information is specifically used to indicate the first reference point. The frequency domain resources are configured by a second reference point, which is determined according to the configured bandwidth part.

20. The terminal device according to claim 18 or 19, characterized by The receiving unit is further configured to: receive third information sent by the network device, the third information being used to indicate an offset of the configured bandwidth part relative to a reference point.

21. A network device, comprising: comprising: a processor, a memory, and a transceiver, which communicate with each other through internal connection paths to transfer control and / or data signals, so that the network device performs the method according to any one of claims 1-5.

22. A terminal device, comprising: comprising: a processor, a memory, and a transceiver, which communicate with each other through internal connection paths to transfer control and / or data signals, so that the terminal device performs the method according to any one of claims 6-10.

23. A chip, characterized by comprising: a processor configured to call and run a computer program from a memory, so that a device installed with the chip performs the method according to any one of claims 1 to 10.

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