Wireless Communication Method and Device

Abstract

To provide a wireless communication method and a device that improve the performance of a communication system by flexibly performing frequency domain resource allocation and / or bandwidth sub-configuration for each terminal device in combination with synchronization signal blocks.SOLUTION: A method of a wireless communication system including a network device, and at least one terminal device configured within a coverage of the network device includes: receiving, by the network device, a first message sent by the terminal device and indicating that the terminal device has detected a first synchronization signal block; and performing, by the network device, frequency domain resource allocation and / or bandwidth sub-configuration for the terminal device on the basis of the first synchronization signal block.SELECTED DRAWING: Figure 2

Description

Technical Field

[0001] The embodiments of the present application relate to the field of communications, and specifically, to wireless communication methods and devices.

Background Art

[0002] In a Long Term Evolution (LTE) communication system, with the center frequency point of the system bandwidth as the reference point, the amount of data transmitted between terminal devices can be referred to, resources can be allocated to the terminal devices, and reference signals can be transmitted with the center frequency point of the system bandwidth as the reference point.

[0003] In a New Radio (NR) communication system, how to perform resource allocation and / or configuration, or how to transmit reference signals, becomes an issue to be solved.

Summary of the Invention

[0004] The present application provides a wireless communication method and device for realizing resource allocation and / or configuration, or reference signal transmission in an NR system.

[0005] The first form provides a wireless communication method, wherein a network device receives a first message transmitted by a terminal device, and based on the first synchronization signal block, the network device performs frequency domain resource allocation and / or bandwidth part configuration for the terminal device, and the first message indicates that the terminal device has detected a first synchronization signal block.

[0006] Therefore, in the embodiments of the present application, the network device refers to the synchronization signal block currently detected by the terminal device, and performs frequency domain resource allocation and / or bandwidth part configuration for the terminal device, so as to realize flexible frequency domain resource allocation and / or bandwidth part configuration.

[0007] Combined with the first form, in a realizable manner of the first form, based on the first synchronization signal block, the network device performing frequency domain resource allocation and / or bandwidth part configuration for the terminal device is including the network device performing frequency domain resource allocation and / or bandwidth part configuration for the terminal device based on the frequency points occupied by the first synchronization signal block.

[0008] Combined with the first form or a realizable manner of the first form, in another realizable manner of the first form, based on the frequency points occupied by the first synchronization signal block, the network device performing frequency domain resource allocation and / or bandwidth part configuration for the terminal device is including determining a reference point based on the frequency points occupied by the first synchronization signal block, and the network device performing frequency domain resource allocation and / or bandwidth part configuration for the terminal device according to the reference point.

[0009] Combined with the first form or a realizable manner of the first form, in another realizable manner of the first form, the method further includes the network device sending first information to the terminal device, where the first information indicates a reference point for the network device to perform frequency domain resource allocation and / or bandwidth part configuration for the terminal device.

[0010] In combination with the first form or a realizable manner of the first form, in other realizable manners of the first form, the first information is carried in a random access response message or radio resource control (RRC) dedicated signaling.

[0011] In combination with the first form or a realizable manner of the first form, in other realizable manners of the first form, determining a reference point based on the frequency points occupied by the first synchronization signal block includes determining the frequency points occupied by the first synchronization signal block as the reference point.

[0012] In combination with the first form or a realizable manner of the first form, in other realizable manners of the first form, determining a reference point based on the frequency points occupied by the first synchronization signal block includes determining a second synchronization signal block based on the frequency points occupied by the first synchronization signal block, and determining the reference point based on the frequency points occupied by the second synchronization signal block.

[0013] In combination with the first form or a realizable manner of the first form, in other realizable manners of the first form, determining the reference point based on the frequency points occupied by the second synchronization signal block includes determining the frequency points occupied by the second synchronization signal block as the reference point.

[0014] In combination with the first form or a realizable manner of the first form, in other realizable manners of the first form, the method further includes the network device transmitting second information, where the second information indicates a frequency domain relationship between a plurality of synchronization signal blocks, and the plurality of synchronization signal blocks includes the first synchronization signal block and the second synchronization signal block.

[0015] Combined with the first form or a realizable manner of the first form, in another realizable manner of the first form, determining a second synchronization signal block based on the frequency points occupied by the first synchronization signal block, when the interval between the frequency points occupied by the first synchronization signal block and the frequency region resources allocated to the terminal device is greater than or equal to a predetermined value, includes determining the second synchronization signal block.

[0016] Combined with the first form or a realizable manner of the first form, in another realizable manner of the first form, the reference point for the network device to perform bandwidth part configuration on the terminal device is the first reference point, and the reference point for the network device to perform frequency region resource allocation on the terminal device is the second reference point.

[0017] Combined with the first form or a realizable manner of the first form, in another realizable manner of the first form, the second reference point is the frequency point occupied by the synchronization signal block closest to the configured bandwidth part.

[0018] Combined with the first form or a realizable manner of the first form, in another realizable manner of the first form, the first reference point is the frequency point occupied by the first synchronization signal block.

[0019] Combined with the first form or a realizable manner of the first form, in another realizable manner of the first form, the first reference point is the frequency point occupied by the second synchronization signal block.

[0020] Combined with the first form or a realizable manner of the first form, in another realizable manner of the first form, 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.

[0021] In combination with the first form or a realizable manner of the first form, in another realizable manner of the first form, according to the reference point, for the network device to perform frequency domain resource allocation and / or bandwidth part configuration on the terminal device, includes the network device transmitting third information to the terminal device, where the third information indicates the resource size to be allocated and / or the offset with respect to the reference point, and / or the number of bandwidth parts to be configured and / or the offset with respect to the reference point.

[0022] In combination with the first form or a realizable manner of the first form, in another realizable manner of the first form, the method further includes the network device transmitting a reference signal to the terminal device according to a third reference point.

[0023] In combination with the first form or a realizable manner of the first form, in another realizable manner of the first form, the method includes the network device transmitting fourth information to the terminal device, where the fourth information indicates the third reference point at which the terminal device transmits the reference signal.

[0024] In combination with the first form or a realizable manner of the first form, in another realizable manner of the first form, the first message includes an index of the first synchronization signal block.

[0025] In combination with the first form or a realizable manner of the first form, in another realizable manner of the first form, the first synchronization signal block is indicated to the network device via the resources occupied by the first message.

[0026] In combination with the first form or a realizable manner of the first form, in another realizable manner of the first form, the method further The network device transmits fifth information to the terminal device, and the fifth information indicates a correspondence relationship between resources occupied by a plurality of the first messages and a plurality of synchronization signal blocks.

[0027] Combined with the first form or a realizable manner of the first form, in another realizable manner of the first form, the first message is a message of a random access procedure.

[0028] Combined with the first form or a realizable manner of the first form, in another realizable manner of the first form, the first message is a random access request message, and the first message instructs the network device of the first synchronization signal block via a random access preamble included therein.

[0029] Combined with the first form or a realizable manner of the first form, in another realizable manner of the first form, the method further includes the network device transmits sixth information to the terminal device, and the sixth information indicates a correspondence relationship between a plurality of preamble access codes and a plurality of synchronization signal blocks.

[0030] Combined with the first form or a realizable manner of the first form, in another realizable manner of the first form, the network device performing frequency domain resource configuration on the terminal device based on the first synchronization signal block is referring to capability information of the terminal device and / or a current service status of the network based on the first synchronization signal block, and performing frequency domain resource allocation and / or bandwidth part configuration on the terminal device.

[0031] The second form provides a wireless communication method, a terminal device transmits a first message to a network device, and Based on the first synchronization signal block, the terminal device determines the frequency domain resource allocation and / or bandwidth part configuration that the network device performs on the terminal device, and the first message indicates that the terminal device has detected the first synchronization signal block.

[0032] Combined with the second form, in a realizable manner of the second form, based on the first synchronization signal block, for the terminal device to determine the frequency domain resource allocation and / or bandwidth part configuration that the network device performs on the terminal device, it includes that the terminal device determines the frequency domain resource allocation and / or bandwidth part configuration that the network device performs on the terminal device based on the frequency points occupied by the first synchronization signal block.

[0033] Combined with the second form or a realizable manner of the second form, in another realizable manner of the second form, based on the frequency points occupied by the first synchronization signal block, for the terminal device to determine the frequency domain resource allocation and / or bandwidth part configuration that the network device performs on the terminal device, it includes that the network device determines a reference point for the frequency domain resource allocation and / or bandwidth part configuration that the network device performs on the terminal device based on the frequency points occupied by the first synchronization signal block, and based on the reference point, the terminal device determines the frequency domain resource allocation and / or bandwidth part configuration that the network device performs on the terminal device.

[0034] Combined with the second form or a realizable manner of the second form, in another realizable manner of the second form, based on the frequency points occupied by the first synchronization signal block, for the network device to determine a reference point for the frequency domain resource allocation and / or bandwidth part configuration that the network device performs on the terminal device, determining a frequency point occupied by the first synchronization signal block as the reference point.

[0035] Combined with the second form or a realizable manner of the second form, in another realizable manner of the second form, the reference point for the network device to perform bandwidth part configuration on the terminal device is the first reference point, and the reference point for the network device to perform frequency domain resource allocation on the terminal device is the second reference point.

[0036] Combined with the second form or a realizable manner of the second form, in another realizable manner of the second form, the first reference point is a frequency point occupied by the first synchronization signal block.

[0037] Combined with the second form or a realizable manner of the second form, in another realizable manner of the second form, the second reference point is a frequency point occupied by the synchronization signal block closest to the configured bandwidth part.

[0038] Combined with the second form or a realizable manner of the second form, in another realizable manner of the second form, 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.

[0039] Combined with the second form or a realizable manner of the second form, in another realizable manner of the second form, the method further includes the network device receiving first information transmitted by the terminal device, where the first information indicates a resource size to be allocated and / or an offset with respect to the reference point, and / or a number of configured bandwidth parts and / or an offset with respect to the reference point. Based on the reference point, the terminal device determines the frequency domain resource allocation and / or bandwidth part configuration that the network device performs on the terminal device, which is including that the terminal device determines the frequency domain resource allocation and / or bandwidth part configuration that the network device performs on the terminal device based on the first information and the reference point.

[0040] Combined with the second form or a realizable manner of the second form, in another realizable manner of the second form, the method further includes determining a reference signal part corresponding to the bandwidth part based on a third reference point at which the network device transmits a reference signal and the configured bandwidth part.

[0041] Combined with the second form or a realizable manner of the second form, in another realizable manner of the second form, the method includes that the terminal device receives second information transmitted by the network device, and the second information indicates the third reference point.

[0042] Combined with the second form or a realizable manner of the second form, in another realizable manner of the second form, the first message includes an index of the first synchronization signal block.

[0043] Combined with the second form or a realizable manner of the second form, in another realizable manner of the second form, the network device is instructed to transmit the first synchronization signal block via a resource occupied by the first message.

[0044] Combined with the second form or a realizable manner of the second form, in another realizable manner of the second form, the method further includes The terminal device receiving third information transmitted by the network device, the third information indicating a correspondence between resources occupied by a plurality of the first messages and a plurality of synchronization signal blocks, The terminal device transmitting a first message to the network device includes: determining a resource for transmitting the first message based on the correspondence indicated by the third information; and transmitting the first message on the determined resource.

[0045] In combination with the second form or a realizable manner of the second form, in another realizable manner of the second form, the first message is a message of a random access procedure.

[0046] In combination with the second form or a realizable manner of the second form, in another realizable manner of the second form, the first message is a random access request message, and the first message instructs the network device of the first synchronization signal block via a random access preamble included therein.

[0047] In combination with the second form or a realizable manner of the second form, in another realizable manner of the second form, the method further includes: the terminal device receiving fourth information transmitted by the network device, the fourth information indicating a correspondence between a plurality of preamble access codes and a plurality of synchronization signal blocks; the terminal device transmitting a first message to the network device includes: determining a random access preamble based on the first synchronization signal block and the correspondence indicated by the fourth information; and transmitting the first message including the random access preamble.

[0048] The third form provides a wireless communication method, A network device transmits first information, and according to the reference point, the network device performs frequency domain resource allocation and / or bandwidth part configuration for the terminal device, wherein the first information indicates a reference point for the network device to perform frequency domain resource allocation and / or bandwidth part configuration for the terminal device.

[0049] Therefore, in the embodiments of the present application, the network device can flexibly configure the reference point by instructing the terminal device of the reference point for performing frequency domain resource allocation and / or bandwidth part configuration, avoiding the use of fixed reference points in the system. When the system bandwidth is large, by fixedly using the center frequency point of the system bandwidth as the reference point, the frequency domain resources allocated and / or the configured bandwidth parts instructed to the terminal device require a long field, and the signaling overhead can be increased. This can be avoided. Furthermore, the reference point instructed by the network device to perform frequency domain resource allocation and / or bandwidth part configuration can be applied to scenarios where there are multiple synchronization signal blocks.

[0050] Combined with the third form, in a realizable manner of the third form, the reference point for the network device to perform bandwidth part configuration for the terminal device is the first reference point, and the reference point for the network device to perform frequency domain resource allocation for the terminal device is the second reference point.

[0051] Combined with the third form or a realizable manner of the third form, in another realizable manner of the third form, the first information indicates the first reference point and the second reference point.

[0052] Combined with the third form or a realizable manner of the third form, in another realizable manner of the third form, the first information indicates the first reference point, According to the reference point, the network device performing frequency domain resource allocation and / or bandwidth part configuration for the terminal device is performing bandwidth part configuration based on the first reference point, determining a second reference point based on the configured bandwidth part, and performing frequency domain resource allocation according to the second reference point.

[0053] Combined with the third form or a realizable manner of the third form, in another realizable manner of the third form, the second reference point is the frequency point occupied by the closest synchronization signal block of the configured bandwidth part.

[0054] Combined with the third form or a realizable manner of the third form, in another realizable manner of the third form, 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.

[0055] Combined with the third form or a realizable manner of the third form, in another realizable manner of the third form, the method further includes the network device transmitting a reference signal to the terminal device according to a third reference point.

[0056] Combined with the third form or a realizable manner of the third form, in another realizable manner of the third form, the method includes the network device transmitting second information to the terminal device, and the second information indicates the reference point at which the terminal device transmits a reference signal.

[0057] Combined with the third form or a realizable manner of the third form, in another realizable manner of the third form, the second information is carried in a system broadcast message, a random access response message, or RRC dedicated signaling.

[0058] Combined with the third form or a realizable manner of the third form, in another realizable manner of the third form, one of the reference points is a frequency point occupied by one of a plurality of synchronization signal blocks.

[0059] Combined with the third form or a realizable manner of the third form, in another realizable manner of the third form, the first information is carried in a system broadcast message, a random access response message, or RRC dedicated signaling.

[0060] Combined with the third form or a realizable manner of the third form, in another realizable manner of the third form, the network device performing frequency domain resource allocation and / or bandwidth part configuration for the terminal device includes referring to the capability information of the terminal device and / or the current service status of the network according to the reference point, and performing frequency domain resource allocation and / or bandwidth part configuration for the terminal device.

[0061] Combined with the third form or a realizable manner of the third form, in another realizable manner of the third form, the configured frequency domain resource and / or bandwidth part is used to send a paging message to the terminal device.

[0062] The fourth form provides a wireless communication method, the terminal device receiving first information sent by the network device, According to the reference point, the terminal device determines a reference point for the network device to perform frequency domain resource allocation and / or bandwidth part configuration for the terminal device, and the first information indicates the reference point for the network device to perform frequency domain resource allocation and / or bandwidth part configuration for the terminal device.

[0063] Combined with the fourth form, in a realizable manner of the fourth form, the reference point for the network device to perform bandwidth part configuration for the terminal device is the first reference point, and the reference point for the network device to perform frequency domain resource allocation for the terminal device is the second reference point.

[0064] Combined with the fourth form or a realizable manner of the fourth form, in another realizable manner of the fourth form, the first information indicates the first reference point and the second reference point.

[0065] Combined with the fourth form or a realizable manner of the fourth form, in another realizable manner of the fourth form, the first information indicates the first reference point, According to the reference point, for the terminal device to determine the reference point for the frequency domain resource allocation and / or bandwidth part configuration performed by the network device for the terminal device is, Based on the first reference point, to determine the bandwidth part configuration performed by the network device for the terminal device, Based on the configured bandwidth part, to determine the second reference point, And according to the second reference point, to determine the frequency domain resource allocation performed by the network device for the terminal device.

[0066] In combination with the fourth form or a realizable manner of the fourth form, in another realizable manner of the fourth form, the second reference point is the frequency point occupied by the nearest synchronization signal block of the configured bandwidth portion.

[0067] In combination with the fourth form or a realizable manner of the fourth form, in another realizable manner of the fourth form, 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.

[0068] In combination with the fourth form or a realizable manner of the fourth form, in another realizable manner of the fourth form, the method further includes determining, by the terminal device, a reference signal portion corresponding to the bandwidth portion based on a third reference point at which the network device transmits a reference signal and the configured bandwidth portion.

[0069] In combination with the fourth form or a realizable manner of the fourth form, in another realizable manner of the fourth form, the method includes receiving, by the terminal device, second information transmitted by the network device, where the second information indicates the third reference point.

[0070] In combination with the fourth form or a realizable manner of the fourth form, in another realizable manner of the fourth form, the second information is carried in a system broadcast message, a random access response message, or RRC dedicated signaling.

[0071] In combination with the fourth form or a realizable manner of the fourth form, in another realizable manner of the fourth form, one of the reference points is the frequency point occupied by one synchronization signal block of a plurality of synchronization signal blocks.

[0072] Combined with the fourth form or a realizable manner of the fourth form, in another realizable manner of the fourth form, the first information is carried in a system broadcast message, a random access response message, or RRC dedicated signaling.

[0073] Combined with the fourth form or a realizable manner of the fourth form, in another realizable manner of the fourth form, the configured frequency domain resource and / or bandwidth part is used to transmit a paging message to the terminal device.

[0074] The fifth form provides a wireless communication method, wherein a network device transmits first information, and according to the first reference point, the network device transmits the reference signal to the first terminal device, and the first information indicates a first reference point for the network device to transmit a reference signal to the first terminal device.

[0075] Therefore, in the embodiments of the present application, the reference point for transmitting a reference signal is indicated by the network device to the terminal device, and the configuration of the reference point can be configured flexibly. The reference point for transmitting a reference signal is applied to a scenario where there are multiple synchronization signal blocks by being indicated by the network device.

[0076] Furthermore, since different terminal devices can use the reference point of the same reference signal, the same reference signal transmitted by the network device can be multiplexed. Since different terminal devices can use the reference points of different reference signals, different reference signals can be transmitted to different terminals, and the flexibility of transmitting reference signals can be obtained by using the above method.

[0077] Combined with the fifth form, in a realizable manner of the fifth form, the first information is carried in a system broadcast message, and the first terminal device includes terminal devices within the coverage area of the network device.

[0078] In combination with the fifth form or a realizable manner of the fifth form, in another realizable manner of the fifth form, the first message is carried in a random access response message or radio resource control (RRC) dedicated signaling.

[0079] In combination with the fifth form or a realizable manner of the fifth form, in another realizable manner of the fifth form, the method further includes the network device sending second information to a second terminal device, and the network device sending the reference signal to the second terminal device according to the second reference point, where the second information indicates a second reference point at which the network device sends a reference signal to a first terminal device.

[0080] In combination with the fifth form or a realizable manner of the fifth form, in another realizable manner of the fifth form, the first reference point and the second reference point are the same, or the first reference point and the second reference point are different.

[0081] In combination with the fifth form or a realizable manner of the fifth form, in another realizable manner of the fifth form, one of the reference points is a frequency point occupied by one of a plurality of synchronization signal blocks.

[0082] The sixth form provides a wireless communication method, wherein a terminal device receives first information sent by a network device, and based on the first information, the terminal device determines a reference point at which the network device sends a reference signal, where the first information indicates a reference point at which the network device sends a reference signal.

[0083] In combination with the sixth form, in a realizable manner of the sixth form, the method further includes determining, by the terminal device, a reference signal portion corresponding to the bandwidth portion based on the reference point and the bandwidth portion configured in the terminal device Combined with the sixth aspect or a realizable manner of the sixth aspect, in another realizable 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

[0084] Combined with the sixth aspect or a realizable manner of the sixth aspect, in another realizable manner of the sixth aspect, the reference point is a frequency point occupied by one synchronization signal block among a plurality of synchronization signal blocks

[0085] The seventh aspect provides a network device for executing 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. Specifically, the network device includes a functional module for executing 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

[0086] The eighth aspect provides a terminal device for executing 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. Specifically, the terminal device includes a functional module for executing 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

[0087] A ninth aspect provides a network device including a processor, a memory, and a transceiver. The processor, the memory, and the transceiver communicate with each other via an internal connection path, communicate control signals and / or data signals, and cause the network device to execute the method in the above-described first aspect or any possible implementation thereof, the third aspect or any possible implementation thereof, or the fifth aspect or any possible implementation thereof.

[0088] In a tenth aspect, a terminal device including a processor, a memory, and a transceiver is provided. The processor, the memory, and the transceiver communicate with each other via an internal connection path, communicate control signals and / or data signals, and cause the terminal device to execute the method in the above-described second aspect or any possible implementation thereof, the fourth aspect or any possible implementation thereof, or the sixth aspect or any possible implementation thereof.

[0089] An eleventh aspect provides a computer-readable medium for storing a computer program including instructions for executing the method in any of the above aspects or any possible implementation thereof.

[0090] In a twelfth aspect, a computer program product including instructions is provided, and when a computer executes the instructions of the computer program product, it executes the method in any of the above aspects or any possible implementation thereof. Specifically, the computer program product can operate on any of the terminal devices or network devices in the above aspects.

Brief Description of the Drawings

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Embodiments for Carrying Out the Invention

[0092] Hereinafter, embodiments of the present invention will be described with reference to the drawings. However, the present invention is not limited to these embodiments, and various modifications based on the technical idea of the present invention are possible. All other embodiments obtained by those skilled in the art without creative labor based on the embodiments in the present application belong to the protection scope of the present application.

[0093] The technology of the embodiments of the present application is applicable to various communication systems. For example, wireless communication systems such as Global System of Mobile communication (GSM), Code Division Multiple Access (CDMA), Wideband Code Division Multiple Access (WCDMA), General Packet Radio Service (GPRS), Long Term Evolution (LTE), Frequency Division Duplex (FDD), Time Division Duplex (TDD), Universal Mobile Telecommunication System (UMTS), Worldwide Interoperability for Microwave Access (WiMAX), or future 5G systems (New Radio, NR) can be used.

[0094] FIG. 1 shows a wireless communication system 100 to which the embodiments of the present application are applied. The wireless communication system 100 may include a network device 110. The network device 100 may be a device that communicates with a terminal device. The network device 100 may provide communication coverage in a specific geographical area and communicate with terminal devices such as UEs configured within the coverage area. Optionally, the network device 100 may be a base transceiver station (BTS) in a GSM system or a CDMA system, a base station (NodeB, NB) in a WCDMA system, an evolved base station (Evolutional Node B, eNB, or eNodeB) in an LTE system, or a radio controller in a cloud radio access network (CRAN), or a relay station, an access point, an in-vehicle device, a wearable device, a network-side device in a future 5G network, or a network device in a future public land mobile network (PLMN), etc.

[0095] The wireless communication system 100 further includes at least one terminal device 120 configured within the coverage of the network device 110. The terminal device 120 may be mobile or fixed. Optionally, the terminal device 120 may refer to an access terminal, a user equipment (UE), a user device, a user station, a mobile station, a mobile, a remote station, a remote terminal, a mobile device, a user terminal, a wireless communication device, a user agent, or a user device. The access terminal may be a cellular phone, a cordless phone, a Session Initiation Protocol (SIP) phone, a Wireless Local Loop (WLL) station, a Personal Digital Assistant (PDA), a handheld device with wireless communication capabilities, a computing device, or other processing devices connected to a wireless modem, an in-vehicle device, a wearable device, a terminal device in a future 5G network, or a terminal device in a PLMN to be developed in the future, etc.

[0096] Optionally, direct device-to-device (D2D) communication between the terminal devices 120 may be performed.

[0097] Optionally, the 5G system or network may also be referred to as a New Radio (NR) system or network.

[0098] FIG. 1 exemplarily shows one network device and two terminal devices. Optionally, the wireless communication system 100 may include multiple network devices, and each network device's coverage may include other numbers of terminal devices, and the embodiments of the present application are not limited thereto.

[0099] Optionally, the wireless communication system 100 may further include other network entities such as a network controller, a mobility management entity, etc., and the embodiments of the present application are not limited thereto.

[0100] In this specification, it is understood that the terms "system" and "network" are used interchangeably herein. Here, "and / or" is merely one of the relationships for describing related objects, meaning that three relationships can exist, such as A and / or B, which means that there can be three cases: only A, A and B existing simultaneously, and only B existing. Note that the character " / " in the text generally indicates that the related objects before and after are in a kind of "or" relationship.

[0101] In a 5G system, a network device can transmit an SS burst set including a plurality of Synchronization Signal BLOCKs to a terminal device, and each SS BLOCK includes a Primary Synchronization Signal (PSS), a Secondary Synchronization Signal (SSS), and a Physical Broadcasting Channel (PBCH). Also, the frequency position within the system bandwidth of the SS block is not limited to the center frequency point position of the system bandwidth. The terminal device searches for the SS block within the system bandwidth to obtain time-frequency synchronization, obtains PBCH information, and performs Radio Resource Management (RRM) measurements.

[0102] In the case of a 5G system, a bandwidth member carrier with a wide bandwidth such as a bandwidth member carrier having a bandwidth of 400 MHz or 1 GHz can be supported. A plurality of SS blocks can be transmitted in the frequency domain within the bandwidth member carrier. If a future 5G system supports the transmission of a plurality of SS blocks in the frequency domain within the bandwidth member carrier, the terminal may search for any one of the plurality of SS blocks to access the system.

[0103] The present invention has been made in view of the above problems, and provides a technical solution for frequency domain resource allocation, bandwidth part configuration, and / or reference signal transmission for a terminal device when there are a plurality of synchronization signal blocks on a bandwidth member carrier.

[0104] Optionally, in an embodiment of the present application, the system bandwidth may include a plurality of bandwidth parts (Band Part, BP).

[0105] Optionally, the bandwidth sizes of the plurality of bandwidth parts may be the same or different.

[0106] Optionally, when the plurality of bandwidth parts have different bandwidth sizes, they may not be completely overlapped. Or, when a smaller bandwidth part is included in a larger bandwidth part, the center frequency point of the smaller bandwidth part and the center frequency point of the larger bandwidth part may or may not overlap.

[0107] Optionally, two adjacent bandwidth parts among the plurality of bandwidth parts may have no gap and no overlap. Or, two adjacent bandwidth parts may partially overlap.

[0108] Or, in an embodiment of the present application, the frequency domain resource to which the frequency domain resource allocation is allocated may be the frequency domain resource in the configured bandwidth part, and the frequency domain resource to which the allocation is made may be in units of frequency domain resource units (for example, the frequency domain resource occupied by one physical resource block (Physical Resource Block, PRB)).

[0109] Optionally, in an embodiment of the present application, the frequency domain resource allocation can be used for data transmission of the terminal device. The network device can allocate the resources in the frequency domain according to the amount of data currently transmitted by the terminal device.

[0110] Optionally, in the embodiments of the present application, the bandwidth portion configured in the terminal device is semi-static, and the network device may configure a bandwidth portion for the terminal device according to the capabilities of the terminal device.

[0111] Optionally, in the embodiments of the present application, according to the data volume of the terminal device, a corresponding bandwidth portion is configured. For example, for the transmission of a small data volume, a small bandwidth portion can also be configured, and for the transmission of a large data volume, a large bandwidth portion or even the entire bandwidth can be configured.

[0112] Optionally, in the embodiments of the present application, the configuration of the bandwidth portion for the terminal device and / or the allocation of frequency domain resources may refer to the synchronization signal block detected by the terminal device. This will be described in detail below in relation to method 200 shown in FIG. 2.

[0113] FIG. 2 is a flowchart of a wireless communication method 200 in the embodiments of the present application. As shown in FIG. 2, the method 200 includes 210 and 220.

[0114] In 210, the network device receives a first message transmitted by the terminal device, and the first message indicates that the terminal device has detected a first synchronization signal block.

[0115] Optionally, in the embodiments of the present application, the first message can indicate or implicitly indicate the first synchronization signal block detected by the terminal device.

[0116] In one implementation manner, the first message includes an index of the first synchronization signal block.

[0117] Specifically, if multiple SS blocks are arranged in the network and the terminal device can obtain the index of an SS block after searching for it, the terminal device can signal and report the index of the searched SS block to the terminal device. The signaling may be a Radio Resource Control (RRC) connection request.

[0118] Optionally, the network device may notify the terminal device in advance of the index information of the frequency of the SS block by means of a system message associated with the SS block.

[0119] In one implementation manner, the first synchronization signal block is indicated to the network device via the resources occupied by the first message.

[0120] Specifically, in the embodiments of the present application, the terminal device determines the resources for transmitting the first message based on the detected first synchronization signal block, and indicates the synchronization signal block detected by the terminal device to the network device via the resources for transmitting the first message. The network device can determine the synchronization signal block detected by the terminal device based on the resources for transmitting the first message.

[0121] Optionally, in the embodiments of the present application, the terminal device can determine the resources for transmitting the first message based on the correspondence between the resources occupied by multiple first messages and multiple synchronization signal blocks. Correspondingly, the network device can determine the synchronization signal block detected by the terminal device based on the correspondence between the resources occupied by multiple first messages and multiple synchronization signal blocks, and the resources for receiving the first message.

[0122] Optionally, in the embodiments of the present application, the network device can indicate to the terminal device the correspondence between the resources occupied by the plurality of first messages and the plurality of synchronization signal blocks. Optionally, the correspondence is broadcast to the terminal device in a broadcast message.

[0123] Optionally, the first message may be a message of a random access procedure, for example, MSG1 or MSG3.

[0124] Optionally, in the embodiments of the present application, when the first message is a random access request message, the first message notifies the network device of the first synchronization signal block detected by the terminal device via the random access preamble included therein.

[0125] Specifically, in the embodiments of the present application, the terminal device determines a random access preamble based on the detected first synchronization signal block, includes 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 based on the random access preamble included in the random access request message.

[0126] Optionally, in the embodiments of the present application, the terminal device can determine the random access preamble corresponding to the detected synchronization signal block based on the correspondence between the plurality of random access preambles and the plurality of synchronization signal blocks. Correspondingly, the network device can determine the synchronization signal block detected by the terminal device based on the correspondence between the plurality of random access preambles and the plurality of synchronization signal blocks and the received random access preamble.

[0127] Optionally, in the embodiments of the present application, the network device instructs the terminal device of the correspondence relationship between the plurality of random access preambles and the plurality of synchronization signal blocks. Optionally, the correspondence relationship is broadcast to the terminal device via a broadcast message.

[0128] At 220, based on the first synchronization signal block, the network device performs frequency domain resource allocation and / or bandwidth part configuration for the terminal device.

[0129] Optionally, in the embodiments of the present application, based on the frequency points occupied by the first synchronization signal block, the network device performs frequency domain resource allocation and / or bandwidth part configuration for the terminal device.

[0130] Optionally, the frequency points occupied by the synchronization signal block described in the embodiments of the present application may be the central frequency point, the upper frequency point or the lower frequency point occupied by the synchronization signal block.

[0131] Optionally, in the embodiments of the present application, based on the frequency points occupied by the first synchronization signal block, the network device determines a reference point, and according to the reference point, the network device performs frequency domain resource allocation and / or bandwidth part configuration for the terminal device.

[0132] In one implementation manner, the network device may determine the frequency points occupied by the first synchronization signal block as reference points.

[0133] In one implementation manner, the network device determines a second synchronization signal block based on the frequency points occupied by the first synchronization signal block, and determines the reference point based on the frequency points occupied by the second synchronization signal block.

[0134] Specifically, when the network device detects that the interval between the first synchronization signal block and the frequency domain resource allocated to the terminal device is equal to or greater than a predetermined value, the network device determines the second synchronization signal block. The network device determines the reference point based on the frequency points occupied by the second synchronization signal block.

[0135] Therefore, with such an implementation, when allocating frequency domain resources or arranging bandwidth to the terminal device, it is possible to avoid the situation where the interval from the reference point to the allocated frequency domain resources or the configured bandwidth portion is too large, resulting in an excessive signaling overhead due to the need for a large number of field instructions.

[0136] Optionally, the network device can determine the frequency points occupied by the second synchronization signal block as the reference points used for frequency domain resource allocation and / or bandwidth portion configuration.

[0137] Optionally, in the embodiments of the present application, the reference point for frequency domain resource allocation (which can be referred to as the second reference point) and the reference point for bandwidth portion configuration (which can be referred to as the first reference point) may be the same reference point or different reference points.

[0138] For example, the frequency points occupied by the first synchronization signal block can be directly determined as the reference points for performing frequency domain resource allocation and further determined as the reference points for performing bandwidth portion configuration.

[0139] For example, a network device can determine a frequency point occupied by a first synchronization signal block as a reference point for configuring a bandwidth portion, and determine a reference point for frequency domain resource allocation based on the configured bandwidth portion. Here, determining a reference point for frequency domain resource allocation based on the configured bandwidth portion may be to determine the frequency point occupied by the synchronization signal block closest to the configured bandwidth portion as the reference point for performing frequency domain resource allocation, or alternatively, to determine a synchronization signal block from among the synchronization signal blocks whose frequency domain distance from the configured bandwidth portion is equal to or less than a predetermined value, and based on the determined synchronization signal block, determine a reference point for performing frequency domain resource allocation.

[0140] For example, a frequency point occupied by a second synchronization signal block can be determined as a reference point for configuring a bandwidth portion, and a reference point for frequency domain resource allocation can be determined based on the configured bandwidth portion. Here, determining a reference point for frequency domain resource allocation based on the configured bandwidth portion may be to determine the frequency point occupied by the synchronization signal block closest to the configured bandwidth portion as the reference point for performing frequency domain resource allocation, or alternatively, to determine a synchronization signal block from among the synchronization signal blocks whose frequency domain distance from the configured bandwidth portion is equal to or less than a predetermined value, and based on the determined synchronization signal block, determine a reference point for performing frequency domain resource allocation.

[0141] For ease of understanding, it will be described in detail below by taking FIG. 3 as an example.

[0142] For example, as shown in FIG. 3, two synchronization signal block (SS block, SSB) positions are dispersed within a wideband member carrier. When the network device determines that the detected SSB of the terminal device is SSB1, the network device sets bandwidth part 0 or bandwidth part 1 for the terminal with the frequency point where SSB1 is located as the reference point, and can perform service scheduling (including frequency domain resource allocation) for the terminal device in bandwidth part 0 or bandwidth part 1.

[0143] Optionally, if the terminal device notifies the network device of the SSB1 searched by the terminal device in the above-mentioned method and the network device wants to configure bandwidth part 2 for the terminal device, the network device may use the frequency point where SSB2 is located as the reference point of the terminal device. In this way, with the frequency point where SSB1 exists as the reference point, the network device can configure bandwidth part 2 for the terminal device and perform service scheduling for the terminal device in bandwidth part 2.

[0144] By such an operation, while providing a flexible configuration of the bandwidth part in which the terminal operates and a frequency reference point for flexible resource allocation, the network can reduce the frequency interval between the frequency reference point and the actually allocated frequency resources by selecting the frequency reference point, so that the resource indication signaling overhead in the downlink control channel can be effectively reduced.

[0145] Optionally, in the embodiments of the present application, if it is determined that the reference point for allocating the bandwidth part configuration or frequency domain resources is the frequency point occupied by the second synchronization signal block, by changing the synchronization signal block that serves as the basis for determining the reference point, the reference point for allocating the bandwidth part configuration or frequency domain resources to the terminal device can be indicated. Here, the terminal device may be directly notified of the frequency point occupied by the reference point, or the second synchronization signal block that serves as the basis for determining the reference point may be notified to the terminal device. Here, the indication information may be carried in the random access response message (in this case, the first message may be a random access request message), or may be carried in RRC dedicated signaling (for example, an RRC connection establishment response message, in which case the first message may be an RRC connection establishment request message).

[0146] Optionally, the RRC dedicated signaling according to the embodiments of the present invention may include an RRC connection establishment command or an RRC reconfiguration command.

[0147] Optionally, in the embodiments of the present application, the network device transmits information, where the information indicates the frequency domain relationship between a plurality of synchronization signal blocks, and the plurality of synchronization signal blocks includes a first synchronization signal block and the second synchronization signal block.

[0148] Thereby, the terminal device can determine the frequency point occupied by the second synchronization signal block from the frequency domain relationship and the frequency point occupied by the first synchronization signal block. When the network device notifies the terminal device that the synchronization signal block for specifying the reference point is the second synchronization signal block, the terminal device can determine, based on the same rules as the network device, the reference point for the network device to allocate frequency domain resources and / or perform bandwidth part configuration for the terminal device.

[0149] Optionally, in the embodiments of the present application, when the terminal device does not change the synchronization signal block that directly determines the reference point, the terminal device transmits indication information to the network device, and the network device instructs the reference point for frequency domain resource allocation and / or bandwidth part configuration for the terminal device. Here, the terminal device may be directly notified of the reference point and the frequency points occupied by the reference point, or a confirmation message may be sent to the terminal device. The network device determines the reference point based on the synchronization signal block detected by the terminal device. Here, the indication information is carried in a random access response message (where the first message above may be a random access request message), or is carried in RRC dedicated signaling (for example, an RRC connection response message, and at this time, the first message may be an RRC connection establishment request message).

[0150] Optionally, in the embodiments of the present application, the network device transmits information to the terminal device, and the information indicates the resource size to be allocated and / or the offset with respect to the reference point, and / or the number of configured bandwidth parts and / or the offset with respect to the reference point. Correspondingly, the terminal device determines the frequency domain resources allocated by the network device to the terminal device and / or the configured bandwidth parts based on the information transmitted by the network device and the reference point.

[0151] Here, the offset of the resource to be allocated with respect to the reference point may be the offset of the upper frequency point of the resource to be allocated with respect to the reference point, the offset of the center frequency point of the resource to be allocated with respect to the reference point, or the offset of the lower frequency point of the resource to be allocated with respect to the reference point.

[0152] Here, the offset of the configured bandwidth portion with respect to the reference point may be the offset of the upper frequency point of the configured bandwidth portion with respect to the reference point, the offset of the center frequency point of the configured bandwidth portion with respect to the reference point, or the offset of the lower frequency point of the configured bandwidth portion with respect to the reference point.

[0153] Optionally, in the embodiments of the present application, the network device refers to the capability information of the terminal device and / or the current service status of the network, and performs frequency domain resource allocation and / or bandwidth portion configuration for the terminal device.

[0154] For example, the network device can perform frequency domain resource allocation and / or bandwidth portion configuration for the terminal device in relation to the capability information of the terminal device, the amount of data that needs to be currently transmitted by the terminal device, and / or the fact that various bandwidths and / or resources are occupied by other terminal devices (in consideration of load balancing).

[0155] Optionally, in the embodiments of the present application, the network device transmits a reference signal to the terminal device at a third reference point.

[0156] Optionally, in the embodiments of the present application, the network device uses the third reference point as a starting point and transmits a reference signal to the side of the frequency.

[0157] Alternatively, in the embodiments of the present application, the network device may transmit reference signals to both side frequencies based on the reference point.

[0158] Alternatively, if there is no need to transmit a reference signal in a predetermined frequency range starting from the third reference point, the reference signal remains transmitted starting from the third reference point, but no transmission is performed in the predetermined frequency range, and the remaining reference signals are transmitted in other frequency ranges.

[0159] For example, if the frequency position of the third reference point is 20 MHz and the complete reference signal transmitted by the network device needs to occupy 20 MHz, the assigned frequency points for the terminal are in the frequency range of 0 to 10 MHz. One method is that the reference signal can be transmitted within the range of 0 to 20 MHz. Another method is that in a certain scenario, in the range of 10 MHz to 20 MHz, it is not necessary to transmit the reference sequence (for example, it is not necessary to transmit data and the reference signal to the terminal within the bandwidth). Therefore, the reference sequence part a (originally occupying 10 MHz to 20 MHz) that constitutes the reference signal is not transmitted, and within the range of 0 MHz to 10 MHz, the reference signal part b of the reference signal (the reference signal part a and the reference signal part b constitute the complete reference signal) is transmitted.

[0160] Optionally, in the embodiments of the present application, the terminal device can receive the reference signal within the configured bandwidth range.

[0161] Optionally, in the embodiments of the present application, the terminal device refers to the reference signal part corresponding to the bandwidth part based on the third reference point at which the network device transmits the reference signal and the configured bandwidth part, uses it as a protocol sequence, receives the reference signal within the configured bandwidth part, performs channel measurement with its local sequence and the received reference signal, and can obtain the corresponding channel quality.

[0162] Optionally, in the embodiments of the present application, the network device transmits information to the terminal device and notifies the third reference point.

[0163] Optionally, in the embodiments of the present application, the third reference point and the first reference point and / or the second reference point may be the same reference point.

[0164] Optionally, in the embodiments of the present application, the third reference point notifies the terminal device of a message via broadcast, and at this time, the terminal devices within the range of the broadcast message can share the same third reference point.

[0165] Optionally, in the embodiments of the present application, the third reference point notifies the terminal device via a random access response message or RRC dedicated signaling (RRC connection establishment response message), and at this time, the third reference points corresponding to multiple terminal devices may be the same or different.

[0166] Therefore, in the embodiments of the present application, the network device refers to the synchronization signal block currently detected by the terminal device, and performs frequency domain resource allocation and / or bandwidth part configuration for the terminal device, so as to realize flexible frequency domain resource allocation and / or bandwidth part configuration.

[0167] In addition, in the embodiments of the present application, the case of determining the reference point for frequency domain resource allocation and bandwidth part configuration from the synchronization signal block is mainly described, but it is not limited thereto. For example, the network device may determine the operating status of the terminal device from the synchronization signal block detected by the terminal device, and perform frequency domain resource allocation and system bandwidth configuration according to the operating status.

[0168] FIG. 4 is a flowchart of a wireless communication method 300 in the embodiments of the present application. As shown in FIG. 4, the method includes 310 and 320.

[0169] In 310, the network device transmits first information, and the first information indicates a reference point for the network device to perform frequency domain resource allocation and / or bandwidth part configuration for the terminal device. Optionally, the first information is carried in a system broadcast message, a random access response message or RRC dedicated signaling.

[0170] At 320, according to the reference point, the network device performs frequency domain resource allocation and / or bandwidth part configuration for the terminal device.

[0171] Optionally, in the embodiments of the present application, the reference point at which the network device performs bandwidth part configuration for the terminal device is the first reference point, and the reference point at which the network device performs frequency domain resource allocation for the terminal device is the second reference point.

[0172] 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.

[0173] Optionally, in the embodiments of the present application, the first information indicates the first reference point and the second reference point.

[0174] Optionally, in the embodiments of the present application, the first information indicates the first reference point, and based on the first reference point, performing bandwidth part configuration, determining a second reference point based on the configured bandwidth part, and performing frequency domain resource allocation according to the second reference point. Here, the second reference point is the frequency point occupied by the synchronization signal block closest to the configured bandwidth part.

[0175] Optionally, in the embodiments of the present application, it includes the network device transmitting a reference signal to the terminal device according to a third reference point.

[0176] Optionally, in the embodiments of the present application, the network device transmits information to the terminal device, and the information indicates a reference point at which the terminal device transmits a reference signal. Here, the information may be carried in a system broadcast message, a random access response message, or RRC dedicated signaling.

[0177] Optionally, in the embodiments of the present application, one of the reference points is a frequency point occupied by one of a plurality of synchronization signal blocks.

[0178] Optionally, in the embodiments of the present application, according to the reference point, the capability information of the terminal device and / or the current service status of the network are referred to, and frequency domain resource allocation and / or bandwidth part configuration are performed on the terminal device.

[0179] Optionally, the configured frequency domain resources and / or bandwidth parts are used to transmit paging messages to the terminal device.

[0180] Optionally, in the embodiments of the present application, the network device can determine a reference point for performing frequency domain resource allocation and / or bandwidth part configuration on the terminal device according to the type of the terminal device.

[0181] Here, when the types of terminals are different, the network device can select different SSBs as the reference points for paging message transmission. For example, as described in FIG. 5, for a terminal with a bandwidth of 20 MHz or less, the network device can select the SSB with index 1 as the reference point for paging message transmission and transmit a narrowband paging message. For a terminal with a bandwidth greater than 20 MHz, the network device can select the SSB with index 2 as the reference point for wideband paging message transmission for paging message transmission.

[0182] Optionally, in the embodiments of the present application, it includes that according to a third reference point, the network device transmits a reference signal to the terminal device.

[0183] Optionally, the network device transmits information to the terminal device, and the information indicates the third reference point at which the terminal device transmits a reference signal.

[0184] Therefore, in the embodiments of the present application, the network device can flexibly configure the reference point by instructing the terminal device of the reference point for frequency domain resource allocation and / or bandwidth part configuration, avoiding the use of fixed reference points in the system. When the system bandwidth is large, by fixedly using the center frequency point of the system bandwidth as the reference point, it can be avoided that the frequency domain resources assigned and / or the configured bandwidth parts instructed to the terminal device require long fields and the signaling overhead increases. Furthermore, the reference point instructed by the network device to perform frequency domain resource allocation and / or bandwidth part configuration can be applied to scenarios where there are multiple synchronization signal blocks.

[0185] FIG. 6 is a flowchart of a wireless communication method 400 in the embodiments of the present application. As shown in FIG. 6, the method includes 410 and 420.

[0186] In 410, the network device transmits first information, and the first information indicates a first reference point at which the network device transmits a reference signal to a first terminal device.

[0187] In 420, according to the first reference point, the network device transmits the reference signal to the first terminal device.

[0188] Optionally, the first information is carried in a system broadcast message, and the first terminal device includes terminal devices within the coverage area of the network device.

[0189] Optionally, the first message is carried in a random access response message or radio resource control (RRC) dedicated signaling.

[0190] Optionally, the network device transmitting second information to a second terminal device and the network device transmitting the reference signal to the second terminal device according to the second reference point, where the second information indicates a second reference point at which the network device transmits a reference signal to a first terminal device.

[0191] Optionally, the first reference point and the second reference point are the same, or the first reference point and the second reference point are different.

[0192] Optionally, one of the reference points is a frequency point occupied by one of a plurality of synchronization signal blocks.

[0193] Therefore, in the embodiments of the present application, the reference point for transmitting a reference signal is indicated by the network device to the terminal device, and the configuration of the reference point can be flexibly configured. The reference point for transmitting a reference signal can be applied to a scenario where a plurality of synchronization signal blocks exist by being indicated by the network device.

[0194] Furthermore, since different terminal devices can use the reference point of the same reference signal, the same reference signal transmitted by the network device can be multiplexed, and since different terminals can use the reference points of different reference signals, different reference signals can be transmitted to different terminals. Using the above method, flexibility in transmitting reference signals can be obtained.

[0195] FIG. 7 is a flowchart of a wireless communication method 500 according to an embodiment of the present application. As shown in FIG. 7, the wireless communication method 500 includes 510 and 520.

[0196] In 510, the terminal device transmits a first message to the network device, and the first message indicates that the terminal device has detected a first synchronization signal block.

[0197] In 520, based on the first synchronization signal block, the terminal device determines a frequency domain resource allocation and / or a bandwidth part configuration that the network device performs on the terminal device.

[0198] Optionally, based on the frequency points occupied by the first synchronization signal block, the terminal device determines a frequency domain resource allocation and / or a bandwidth part configuration that the network device performs on the terminal device.

[0199] Optionally, based on the frequency points occupied by the first synchronization signal block, the network device determines a reference point for a frequency domain resource allocation and / or a bandwidth part configuration that the network device performs on the terminal device, and based on the reference point, the terminal device determines a frequency domain resource allocation and / or a bandwidth part configuration that the network device performs on the terminal device.

[0200] Optionally, the terminal device determines the frequency points occupied by the first synchronization signal block as the reference point.

[0201] Optionally, the reference point for the network device to perform a bandwidth part configuration on the terminal device is a first reference point, and the reference point for the network device to perform a frequency domain resource allocation on the terminal device is a second reference point.

[0202] Optionally, the first reference point is a frequency point occupied by the first synchronization signal block.

[0203] Optionally, the second reference point is a frequency point occupied by the synchronization signal block closest to the configured bandwidth portion.

[0204] 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.

[0205] Optionally, the terminal device receives the information sent by the network device, the information indicates the resource size to be allocated and / or the offset with respect to the reference point, and / or the number of configured bandwidth portions and / or the offset with respect to the reference point, and based on the information and the reference point, the terminal device determines the frequency domain resource allocation and / or bandwidth portion configuration that the network device performs on the terminal device.

[0206] Optionally, the terminal device determines a reference signal portion corresponding to the bandwidth portion based on a third reference point at which the network device transmits a reference signal and the configured bandwidth portion.

[0207] Optionally, the terminal device receives the information sent by the network device, and the information indicates the third reference point.

[0208] Optionally, the first message includes an index of the first synchronization signal block.

[0209] Optionally, the first synchronization signal block is indicated to the network device via the resource occupied by the first message.

[0210] Optionally, the terminal device receives information transmitted by the network device, where the information indicates a correspondence between resources occupied by a plurality of the first messages and a plurality of synchronization signal blocks. Based on the correspondence indicated by the information, a resource for transmitting the first message is determined, and the first message is transmitted in the determined resource.

[0211] Optionally, the first message is a message of a random access procedure.

[0212] Optionally, the first message is a random access request message, and the first message instructs the network device of the first synchronization signal block via a random access preamble included therein.

[0213] Optionally, the terminal device receives information transmitted by the network device, where the information indicates a correspondence between a plurality of preamble access codes and a plurality of synchronization signal blocks. Based on the first synchronization signal block and the correspondence indicated by the information, a random access preamble is determined, and the terminal device transmits the first message including the random access preamble.

[0214] FIG. 8 is a flowchart of a wireless communication method 600 according to an embodiment of the present application. As shown in FIG. 8, the method 600 includes 610 and 620.

[0215] In 610, a terminal device receives first information transmitted by a network device, where the first information indicates a reference point for the network device to perform frequency domain resource allocation and / or bandwidth part configuration for the terminal device. The first information is carried in a system broadcast message, a random access response message, or RRC dedicated signaling.

[0216] At 620, according to the reference point, the terminal device determines a reference point at which the network device performs frequency domain resource allocation and / or bandwidth part configuration for the terminal device.

[0217] Optionally, the reference point at which the network device performs bandwidth part configuration for the terminal device is a first reference point, and the reference point at which the network device performs frequency domain resource allocation for the terminal device is a second reference point.

[0218] Optionally, the first information indicates the first reference point and the second reference point.

[0219] Optionally, the first information indicates the first reference point. Based on the first reference point, the terminal device determines the bandwidth part configuration performed by the network device for the terminal device. Based on the configured bandwidth part, the terminal device determines a second reference point. Based on the second reference point, the terminal device determines the frequency domain resource allocation performed by the network device for the terminal device.

[0220] Optionally, the second reference point is the frequency point occupied by the closest synchronization signal block of the configured bandwidth part.

[0221] 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.

[0222] Optionally, it includes that the terminal device determines a reference signal part corresponding to the bandwidth part based on a third reference point at which the network device transmits a reference signal and the configured bandwidth part.

[0223] Optionally, the terminal device receives information transmitted by the network device, and the information indicates the third reference point. The information is carried in a system broadcast message, a random access response message, or RRC dedicated signaling.

[0224] Optionally, one of the reference points is a frequency point occupied by one of a plurality of synchronization signal blocks.

[0225] Optionally, the configured frequency domain resource and / or bandwidth part is used to send a paging message to the terminal device.

[0226] FIG. 9 is a flowchart of a wireless communication method 700 according to an embodiment of the present application. As shown in FIG. 9, the method 700 includes 710 and 720.

[0227] In 710, the terminal device receives first information transmitted by the network device, and the first information indicates a reference point at which the network device transmits a reference signal.

[0228] In 720, based on the first information, the terminal device determines a reference point at which the network device transmits a reference signal.

[0229] Optionally, based on the reference point and the bandwidth part configured for the terminal device, the terminal device determines a reference signal part corresponding to the bandwidth part.

[0230] Optionally, the first information is carried in a system broadcast message, a random access response message, or radio resource control (RRC) dedicated signaling.

[0231] Optionally, the reference point is a frequency point occupied by one of a plurality of synchronization signal blocks.

[0232] Although methods 200-700 are described separately above, this does not mean that the methods 200-700 are independent. The descriptions of the respective methods may refer to each other, and if there is no contradiction, alternative configurations of the respective methods may be used in combination. For example, it should be understood that the description regarding the reference signal of method 200 may be applied to methods 300-700. For the sake of brevity, the embodiments of the present application will not be repeatedly described.

[0233] FIG. 10 is a block diagram of a network device 800 in an embodiment of the present application. As shown in FIG. 10, the network device 800 includes a processing unit 810 and a communication unit 820.

[0234] Optionally, the communication unit 820 is configured to receive a first message transmitted by a terminal device, the first message indicating that the terminal device has detected a first synchronization signal block, and the processing unit 810 is configured to perform frequency domain resource allocation and / or bandwidth part configuration for the terminal device based on the first synchronization signal block.

[0235] Optionally, the communication unit 820 is configured to transmit first information, the first information indicating a reference point at which the network device performs frequency domain resource allocation and / or bandwidth part configuration for a terminal device, and the processing unit 810 is configured to perform frequency domain resource allocation and / or bandwidth part configuration for the terminal device based on the reference point.

[0236] 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, the communication unit 820 is configured to transmit first information, the first information indicates the first reference point at which the network device transmits a reference signal to the first terminal device, and according to the first reference point, it is configured to transmit the reference signal to the first terminal device.

[0237] It should be understood that this network device 800 can correspond to the network device in the method embodiment and can implement the functions implemented by the network device in any alternative manner of the embodiment. For the sake of brevity, a detailed description is omitted here.

[0238] FIG. 11 is a block diagram of a terminal device 900 in an embodiment of the present application. As shown in FIG. 11, the terminal device 900 includes a communication unit 910 and a processing unit 920.

[0239] The communication unit 910 is configured to transmit a first message to the network device, and the first message indicates that the terminal device has detected a first synchronization signal block.

[0240] The processing unit 920 is configured to determine, based on the first synchronization signal block, the frequency domain resource allocation and / or bandwidth part configuration that the network device performs on the terminal device.

[0241] Optionally, the communication unit 910 is configured to receive first information transmitted by the network device, the first information indicates the reference point at which the network device transmits a reference signal, and the processing unit 920 is configured to determine the reference point at which the network device transmits a reference signal based on the first information.

[0242] Optionally, the communication unit 910 is configured to receive first information transmitted by a network device, the first information indicating a reference point for the network device to perform frequency domain resource allocation and / or bandwidth part configuration for the terminal device, and the processing unit 920 is configured to determine, according to the reference point, a reference point for the network device to perform frequency domain resource allocation and / or bandwidth part configuration for the terminal device.

[0243] It should be understood that this terminal device 900 can correspond to the terminal device in the method embodiment and can implement the functions implemented by the terminal device in any alternative of the embodiment. For the sake of brevity, the description thereof is omitted here.

[0244] FIG. 12 is a schematic configuration diagram of the system chip 1000 of this embodiment. The system chip 1000 in FIG. 12 includes an input interface 1001, an output interface 1002, a processor 1003 that executes the code in the memory 604, and a memory 1004, and these can be connected to each other by internal communication connection lines.

[0245] Optionally, when the code is executed, the processor 1003 implements the method executed by the network device in the method embodiment. For the sake of brevity, it is not repeatedly described here.

[0246] Optionally, when the code is executed, the processor 1003 implements the method executed by the terminal device in the method embodiment. For the sake of brevity, it is not repeatedly described here.

[0247] FIG. 13 is a schematic block diagram of a communication device 1100 according to an embodiment of the present invention. As shown in FIG. 13, the communication device 1100 has a processor 1110 and a memory 1120. Here, the memory 1120 may store program code, and the processor 1110 may execute the program code stored in the memory 1120.

[0248] Optionally, as shown in FIG. 13, the communication device 1100 may include a transceiver 1130 that can control the processor 1110 to communicate with the outside.

[0249] Optionally, the processor 1110 may call the program code stored in the memory 1120 and execute the corresponding operations of the main service node in the method embodiment. For the sake of brevity, detailed descriptions are omitted here.

[0250] Optionally, the processor 1110 may call the program code stored in the memory 1120 and execute the corresponding operations of the terminal device in the method embodiment. For the sake of brevity, detailed descriptions are omitted here.

[0251] The processor in the embodiments of the present application may be an integrated circuit chip and has signal processing capabilities. In the implementation process, each step in the embodiments of the above method may be completed by the integrated logic circuit of the hardware in the processor or by instructions in the form of software. The above processor may be a general-purpose processor, a digital signal processor (DSP), an application specific integrated circuit (ASIC), a field programmable gate array (FPGA), or other programmable logic devices, discrete gates or transistor logic devices, discrete hardware components. Each method, step and logic block diagram disclosed in the embodiments of the present invention can be realized or executed. The general-purpose processor may be a microprocessor, or the processor may be any ordinary processor, etc. The step of combining the methods disclosed in the embodiments of the present invention is executed and completed by a hardware decoding processor, or can be embodied to be executed and completed by a combination of a hardware module and a software module in the decoding processor. The software module may be located in a mature storage medium in this field, such as a random access memory, a flash memory, a read-only memory, a programmable read-only memory or an electrically erasable programmable memory, a register, etc. The storage medium is located in the memory, and the processor reads the information in the memory and combines it with its hardware to complete the steps of the above method.

[0252] The memory in the embodiments of the present invention may be a volatile memory device or a non-volatile memory device, or may include both a volatile memory device and a non-volatile memory device. Here, the non-volatile memory device may be a read-only memory (ROM), a programmable read-only memory (PROM), an erasable programmable read-only memory (EPROM), an electrically erasable programmable read-only memory (EEPROM), or a flash memory. The volatile memory device may be a random access memory (RAM) that functions as an external cache memory. By way of non-limiting and illustrative explanation, many forms of RAM are available, such as static random access memory (SRAM), dynamic random access memory (DRAM), synchronous dynamic random access memory (SDRAM), double data rate synchronous dynamic random access memory (DDR SDRAM), enhanced synchronous dynamic random access memory (ESDRAM), synchlink dynamic random access memory (SLDRAM), and direct ram bus random access memory (DR RAM). It should be noted that the memory of the systems and methods described herein is intended to include these and any other suitable types of memory, but is not limited thereto.

[0253] Embodiments of the present application further provide a computer program product including instructions for performing a method of setting a bandwidth of an embodiment of the above method when a computer executes the finger of the computer program product. Specifically, the computer program product may operate on the above network device and terminal device.

[0254] Those skilled in the art will recognize that the various example units and algorithm steps described in connection with the embodiments disclosed herein can be implemented in electronic hardware, or in a combination of computer software and electronic hardware. These functions depend on whether they are executed by hardware or software according to the specific application examples and design constraints of the technical solution. Those skilled in the art may use different methods for each specific application to implement the described functions, but such implementations should not be considered as departing from the scope of this application.

[0255] For the convenience and brevity of description, those skilled in the art will understand that the specific operation processes of the systems, devices, and units described above may refer to the corresponding processes in the method embodiments described above, where the description thereof is omitted here.

[0256] In some embodiments provided herein, it should be understood that the disclosed systems, devices, and methods may be implemented in other ways. For example, the above-described device embodiments are merely illustrative. For example, the division of units is merely a division of one logical function, and in actual implementation, there may be other division methods. For example, a plurality of units or components may be combined, integrated into another system, or some features may be omitted or not executed. In other respects, the couplings, direct couplings, or communication connections shown or discussed with each other may be indirect couplings or communication connections through some interface, device, or unit, and may be in electrical, mechanical, or other forms.

[0257] The units described as the above separation means may or may not be physically separated, and the means for displaying as units may or may not be physical units, and may be in one place, or may be distributed in a plurality of network units. Also, the purpose of this embodiment is that part or all of each part can be selected and implemented as needed.

[0258] In addition, each functional unit in each embodiment of the present invention may be integrated into one processing unit, or each unit may physically exist separately, or two or more units may be integrated into one unit.

[0259] Moreover, when it is realized in the form of a software functional unit and sold or used as an independent product, it may be stored in a computer-readable recording medium. Based on such an understanding, the essence of the technical solution of the present invention or the part contributing to the prior art, or the part of the technical solution of the present invention, may be embodied in the form of a software product stored in one storage medium containing a plurality of instructions for causing a computer device (which may be a personal computer, a server, a network device, etc.) to execute all or part of the steps of the methods described in various embodiments of the present invention. Note that as the storage medium, various media capable of storing program codes such as USB disks, removable hard disks, Read-Only Memory, ROM, RAM, magnetic disks, and optical disks can be used.

[0260] As described above, specific embodiments of the present invention have been described, but the technical scope of the present invention is not limited thereto. Of course, those having ordinary knowledge in the technical field to which the present invention pertains can easily make changes and substitutions within the technical scope of the present invention. Therefore, the protection scope of the present invention should be defined by the scope of the claims.

Claims

1. The network device includes transmitting 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 configuring a bandwidth portion, wherein the network device transmitting the reference signal to the terminal device according to the third reference point, the network device includes transmitting a reference signal to the terminal device starting from the third reference point, the network device includes transmitting a reference signal to the terminal device starting from the third reference point, the network device includes transmitting to the terminal device a portion of the reference signal that is within the frequency range assigned for the terminal device, and the network device includes not transmitting to the terminal device a portion of the reference signal that is outside the frequency range assigned for the terminal device, a first frequency range starting from the third reference point is not assigned to the terminal device, and the reference signal starts from the third reference point A wireless communication method characterized by the above.

2. The method further includes, the network device transmitting first information to the terminal device, wherein the first information indicates a second reference point for the network device to perform frequency domain resource allocation for the terminal device and / or a first reference point for configuring a bandwidth portion The wireless communication method according to claim 1, characterized by the above.

3. The method further includes, the network device configuring a frequency domain resource and / or a bandwidth portion for the terminal device according to a second reference point and / or a first reference point indicated by the first information The wireless communication method according to claim 2, characterized by the above.

4. The network device configuring a frequency domain resource and / or a bandwidth portion for the terminal device according to a second reference point and / or a first reference point indicated by the first information, the network device includes transmitting third information to the terminal device, wherein the third information indicates an offset of the configured bandwidth portion with respect to the first reference point The wireless communication method according to claim 3, characterized in that...

5. The terminal device includes receiving a reference signal transmitted 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 configuring a bandwidth part. The terminal device receiving a reference signal transmitted by the network device according to a third reference point means that the terminal device includes receiving a reference signal transmitted by the network device starting from the third reference point, the terminal device receiving a reference signal transmitted by the network device starting from the third reference point means that the terminal device includes receiving a portion of the reference signal transmitted by the network device that is within the frequency range assigned to the terminal device, and the terminal device does not receive a portion of the reference signal that is outside the frequency range assigned to the terminal device. A first frequency range starting from the third reference point is not assigned to the terminal device, and the reference signal starts from the third reference point The wireless communication method is characterized by the above.

6. The method further includes the terminal device receiving first information transmitted by the network device, wherein the first information indicates a second reference point for the network device to perform frequency domain resource allocation for the terminal device and / or a first reference point for configuring a bandwidth part. The wireless communication method according to claim 5, characterized in that...

7. The frequency domain resource and / or bandwidth part configured for the terminal device is determined according to the second reference point and / or the first reference point indicated by the first information by the network device. The wireless communication method according to claim 6, characterized in that...

8. The method further includes the terminal device receiving third information transmitted by the network device, wherein the third information indicates an offset of the configured bandwidth part with respect to the first reference point. The wireless communication method according to claim 7, characterized in that...

9. A network device including a communication unit, The communication unit transmits 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, The first reference point is a reference point for configuring a bandwidth part, The communication unit transmits a reference signal to the terminal device starting from the third reference point, The communication unit transmits to the terminal device a part of the reference signal that is within the frequency range assigned for the terminal device, The communication unit does not transmit to the terminal device a part of the reference signal that is outside the frequency range assigned for the terminal device, A first frequency range starting from the third reference point is not assigned to the terminal device, The reference signal starts from the third reference point A network device characterized by this.

10. The communication unit transmits first information to the terminal device, The first information indicates a second reference point for the network device to perform frequency domain resource allocation for the terminal device and / or a first reference point for performing bandwidth part configuration The network device according to claim 9, characterized by this.

11. Further including a processing unit, The processing unit configures frequency domain resources and / or a bandwidth part for the terminal device according to a second reference point and / or a first reference point indicated by the first information The network device according to claim 10, characterized by this.

12. The communication unit includes transmitting third information to the terminal device, The third information indicates that the configured bandwidth part is an offset with respect to the first reference point The network device according to claim 11, characterized by this.

13. A terminal device including a communication unit, The communication unit receives a reference signal transmitted by a network device according to a third reference point, The third reference point and the first reference point are the same reference point, The first reference point is a reference point for configuring a bandwidth part, The communication unit receives a reference signal transmitted by the network device starting from the third reference point, The communication unit receives a portion of the reference signals transmitted by the network device that is within the frequency range assigned for the terminal device, and does not receive a portion of the reference signals that is outside the frequency range assigned for the terminal device, a first frequency range starting from the third reference point is not assigned to the terminal device, the reference signals start from the third reference point A terminal device characterized by the above.

14. The communication unit receives first information transmitted by the network device, the first information indicates a second reference point for the network device to perform frequency domain resource allocation for the terminal device and / or a first reference point for performing bandwidth portion configuration. The terminal device according to claim 13, characterized by the above.

15. The frequency domain resources and / or bandwidth portions configured for the terminal device are determined according to the second reference point and / or the first reference point indicated by the first information by the network device. The terminal device according to claim 14, characterized by the above.

16. The communication unit receives third information transmitted by the network device, the third information indicates that the configured bandwidth portion is an offset with respect to the first reference point. The terminal device according to claim 15, characterized by the above.

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