CN110710276A

CN110710276A - Method and equipment for transmitting Physical Random Access Channel (PRACH)

Info

Publication number: CN110710276A
Application number: CN201880037233.5A
Authority: CN
Inventors: 史志华; 陈文洪; 张治�
Original assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Current assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Priority date: 2018-04-04
Filing date: 2018-04-04
Publication date: 2020-01-17
Anticipated expiration: 2038-04-04
Also published as: CN110710276B; WO2019191964A1

Abstract

The application discloses a method and equipment for transmitting a Physical Random Access Channel (PRACH), which comprises the following steps: the terminal equipment determines space related information for sending the PRACH; and the terminal equipment sends the PRACH based on the space related information of the PRACH. Therefore, the terminal device determines appropriate spatial correlation information for the transmission of the PRACH, and transmits the PRACH based on the spatial correlation information, thereby improving the transmission performance of the PRACH and further improving the system performance.

Description

Method and equipment for transmitting Physical Random Access Channel (PRACH)

Technical Field

The embodiments of the present application relate to the field of communications, and in particular, to a method and apparatus for transmitting a PRACH.

Background

In a 5G or New Radio (NR) system, a Random Access procedure (Random Access procedure) triggered by a Physical Downlink Control Channel (PDCCH) order is supported. After receiving a PDCCH order sent by the network, the terminal device sends a Physical Random Access Channel (PRACH) to the network device based on the scheduling of the PDCCH order. In the PDCCH order triggered random access process, how to improve the transmission performance of the PRACH is an urgent problem to be solved.

Disclosure of Invention

The embodiment of the application provides a method and equipment for transmitting a PRACH (physical random access channel), which can improve the transmission performance of the PRACH.

In a first aspect, a method for transmitting a PRACH is provided, including: the terminal equipment determines space related information for sending the PRACH; and the terminal equipment sends the PRACH based on the space related information of the PRACH.

Therefore, the terminal device determines appropriate spatial correlation information for the transmission of the PRACH, and transmits the PRACH based on the spatial correlation information, thereby improving the transmission performance of the PRACH and further improving the system performance.

The spatial correlation information may be, for example, a transmission beam, a spatial domain transmission filter, or an SRI.

With reference to the first aspect, in a possible implementation manner of the first aspect, the spatial correlation information of the PRACH includes: the spatial correlation information corresponding to Sounding Reference Signal (SRS) resources, the spatial correlation information corresponding to Synchronization Signal Blocks (SSBs), or the spatial correlation information corresponding to channel state indication reference signal (CSI-RS).

With reference to the first aspect or any one of the foregoing possible implementation manners, in another possible implementation manner of the first aspect, the determining, by the terminal device, spatial correlation information for transmitting a PRACH includes: the terminal device receives first indication information sent by a network device, wherein the first indication information is used for indicating the space related information of the PRACH.

With reference to the first aspect or any one of the foregoing possible implementation manners, in another possible implementation manner of the first aspect, the first indication information is carried in downlink control information DCI, a medium access control MAC control element CE, or radio resource control RRC signaling.

With reference to the first aspect or any one of the foregoing possible implementation manners, in another possible implementation manner of the first aspect, the first indication information is used to indicate any one of the following information: identification information of an SRS resource, identification information of a synchronization signal block SSB, or identification information of a channel state indication reference signal CSI-RS.

With reference to the first aspect or any one of the foregoing possible implementation manners, in another possible implementation manner of the first aspect, the determining, by the terminal device, spatial correlation information for transmitting a PRACH includes: the terminal equipment determines Physical Uplink Control Channel (PUCCH) resources associated with the PRACH; and the terminal equipment determines the space related information used for sending the PRACH, and the space related information is the space related information corresponding to the PUCCH resource associated with the PRACH.

With reference to the first aspect or any one of the foregoing possible implementations, in another possible implementation of the first aspect, the determining, by the terminal device, a PUCCH resource associated with a PRACH includes: and the terminal equipment receives second indication information sent by network equipment, wherein the second indication information is used for indicating the PUCCH resources associated with the PRACH.

With reference to the first aspect or any one of the foregoing possible implementation manners, in another possible implementation manner of the first aspect, the second indication information is carried in DCI, MAC CE, or RRC signaling.

With reference to the first aspect or any one of the foregoing possible implementations, in another possible implementation of the first aspect, the determining, by the terminal device, a PUCCH resource associated with the PRACH includes: and the terminal equipment determines the PUCCH resource associated with the PRACH according to the transmission time of the PUCCH.

With reference to the first aspect or any one of the foregoing possible implementations, in another possible implementation of the first aspect, the determining, by the terminal device, the PUCCH resource associated with the PRACH according to a transmission time of a PUCCH includes: and the terminal equipment determines the PUCCH resource associated with the PRACH, and the PUCCH resource is the PUCCH resource where the PUCCH which is transmitted last time is located.

With reference to the first aspect or any one of the foregoing possible implementations, in another possible implementation of the first aspect, the determining, by the terminal device, the PUCCH resource associated with the PRACH according to a transmission time of a PUCCH includes: and the terminal equipment determines the PUCCH resource associated with the PRACH as the PUCCH resource where the PUCCH transmitted last time before the time length of T1 is located.

With reference to the first aspect or any one of the foregoing possible implementations, in another possible implementation of the first aspect, the determining, by the terminal device, a PUCCH resource associated with a PRACH includes: and the terminal equipment determines the PUCCH resource associated with the PRACH according to the resource number of the PUCCH resource.

With reference to the first aspect or any one of the foregoing possible implementations, in another possible implementation of the first aspect, the determining, by the terminal device, the PUCCH resource associated with the PRACH according to a resource number of the PUCCH resource includes: and the terminal equipment determines the PRACH associated with the PRACH, and the PRACH is the PUCCH resource with the maximum resource number, the minimum resource number or the preset value.

With reference to the first aspect or any one of the foregoing possible implementations, in another possible implementation of the first aspect, the determining, by the terminal device, a PUCCH resource associated with the PRACH includes: and the terminal equipment determines the PUCCH resource associated with the PRACH according to the format of the PUCCH.

With reference to the first aspect or any one of the foregoing possible implementations, in another possible implementation of the first aspect, the determining, by the terminal device, the PUCCH resource associated with the PRACH according to a PUCCH format includes: and the terminal equipment determines the PUCCH resources associated with the PRACH, and the PUCCH resources corresponding to the PUCCH format with the largest format number, the smallest format number or the predetermined value.

With reference to the first aspect or any one of the foregoing possible implementations, in another possible implementation of the first aspect, the determining, by the terminal device, a PUCCH resource associated with a PRACH includes: and the terminal equipment determines the PUCCH resource associated with the PRACH according to the information content carried in the PUCCH resource.

With reference to the first aspect or any one of the foregoing possible implementations, in another possible implementation of the first aspect, the determining, by the terminal device, the PUCCH resource associated with the PRACH according to information content carried in the PUCCH resource includes: and the terminal equipment determines the PUCCH resource associated with the PRACH, and the PUCCH resource carries acknowledgement/negative acknowledgement (ACK/NACK) information or CSI information.

With reference to the first aspect or any one of the foregoing possible implementations, in another possible implementation of the first aspect, the determining, by the terminal device, a PUCCH resource associated with the PRACH includes: and the terminal equipment determines the PUCCH resource associated with the PRACH according to the transmission mode of the Channel State Information (CSI).

With reference to the first aspect or any one of the foregoing possible implementations, in another possible implementation of the first aspect, the determining, by the terminal device, the PUCCH resource associated with the PRACH according to a CSI transmission scheme includes: the terminal equipment determines the PUCCH resource associated with the PRACH, and the PUCCH resource transmits a plurality of CSI simultaneously or transmits single CSI.

With reference to the first aspect or any one of the foregoing possible implementations, in another possible implementation of the first aspect, the PUCCH resource associated with the PRACH is a currently activated PUCCH resource, or a PUCCH resource that is not currently activated but has been configured by a network device for a subsequent PUCCH transmission.

With reference to the first aspect or any one of the foregoing possible implementations, in another possible implementation of the first aspect, the determining, by the terminal device, spatial correlation information for transmitting the PRACH according to the PUCCH resource associated with the PRACH includes: when the number of the spatial correlation information corresponding to the PUCCH resource is multiple, the terminal device determines the spatial correlation information used for transmitting the PRACH, and the spatial correlation information is currently activated or used by the PUCCH resource; or, when there are a plurality of pieces of spatial correlation information corresponding to the PUCCH resource, the terminal device determines spatial correlation information used for transmitting the PRACH, and the spatial correlation information is spatial correlation information with a largest number, a smallest number, or a predetermined value among the plurality of pieces of spatial correlation information corresponding to the PUCCH resource.

With reference to the first aspect or any one of the foregoing possible implementations, in another possible implementation of the first aspect, the determining, by the terminal device, a PUCCH resource associated with a PRACH includes: the terminal device determines the PUCCH resource associated with the PRACH from a plurality of candidate PUCCH resources.

With reference to the first aspect or any one of the foregoing possible implementation manners, in another possible implementation manner of the first aspect, the method further includes: the terminal equipment receives third indication information sent by network equipment, wherein the third indication information is used for indicating the candidate PUCCH resources; or the terminal device acquires the candidate plurality of PUCCH resources pre-stored in the terminal device.

With reference to the first aspect or any one of the foregoing possible implementation manners, in another possible implementation manner of the first aspect, the determining, by the terminal device, spatial correlation information for transmitting a PRACH includes: the terminal equipment determines primary data transmission associated with the PRACH on a Physical Uplink Shared Channel (PUSCH); the terminal device determines spatial correlation information used for sending the PRACH, and the spatial correlation information is used for the primary data transmission associated with the PRACH.

With reference to the first aspect or any one of the foregoing possible implementations, in another possible implementation of the first aspect, the determining, by the terminal device, one data transmission associated with the PRACH on a PUSCH includes: and the terminal equipment determines the primary data transmission associated with the PRACH according to the transmission time of the data transmission on the PUSCH.

With reference to the first aspect or any one of the foregoing possible implementations, in another possible implementation of the first aspect, the determining, by the terminal device, to be used by the one data transmission associated with the PRACH according to a transmission time of the data transmission on the PUSCH includes: the terminal equipment determines the one-time data transmission associated with the PRACH, and the one-time data transmission is the latest data transmission on the PUSCH.

With reference to the first aspect or any one of the foregoing possible implementations, in another possible implementation of the first aspect, the determining, by the terminal device, to be used by the one data transmission associated with the PRACH according to a transmission time of the data transmission on the PUSCH includes: the terminal device determines the one data transmission associated with the PRACH as the latest data transmission on the PUSCH before the time length of T2.

With reference to the first aspect or any one of the foregoing possible implementations, in another possible implementation of the first aspect, the determining, by the terminal device, one data transmission associated with the PRACH on a PUSCH includes: and the terminal equipment determines the primary data transmission associated with the PRACH as the transmission of a random access message 3 MSG.3.

With reference to the first aspect or any one of the foregoing possible implementation manners, in another possible implementation manner of the first aspect, the determining, by the terminal device, spatial correlation information for transmitting a PRACH includes: and the terminal equipment determines the space related information of the PRACH according to a Physical Downlink Control Channel (PDCCH) command for scheduling the PRACH.

With reference to the first aspect or any one of the foregoing possible implementations, in another possible implementation of the first aspect, the determining, by the terminal device, spatial correlation information for transmitting the PRACH according to a PDCCH order for scheduling the PRACH includes: and the terminal equipment determines the space related information for sending the PRACH according to TCI information corresponding to a control resource set for transmitting the PDCCH command.

With reference to the first aspect or any one of the foregoing possible implementation manners, in another possible implementation manner of the first aspect, the determining, by the terminal device, spatial related information for sending the PRACH according to TCI information corresponding to a control resource set for transmitting the PDCCH order includes: the terminal device determines spatial correlation information of the PRACH according to a first reference signal, where the first reference signal is a reference signal indicated by the TCI information corresponding to the control resource set.

With reference to the first aspect or any one of the foregoing possible implementation manners, in another possible implementation manner of the first aspect, the determining, by the terminal device, spatial related information for sending the PRACH according to TCI information corresponding to a control resource set for transmitting the PDCCH order includes: and the terminal equipment determines the space related information of the PRACH according to the reference signal resource associated with the first reference signal.

With reference to the first aspect or any one of the foregoing possible implementation manners, in another possible implementation manner of the first aspect, the method further includes: the terminal equipment receives fourth indication information sent by the network equipment, wherein the fourth indication information is used for indicating a plurality of candidate space-related information; or, the terminal device obtains a plurality of candidate space-related information pre-stored in the terminal device;

the determining, by the terminal device, spatial correlation information for transmitting a PRACH includes: and the terminal equipment determines the spatial correlation information of the PRACH in the plurality of candidate spatial correlation information.

With reference to the first aspect or any one of the foregoing possible implementation manners, in another possible implementation manner of the first aspect, the fourth indication information is carried in DCI, MAC CE, or RRC signaling.

With reference to the first aspect or any one of the foregoing possible implementation manners, in another possible implementation manner of the first aspect, the method further includes: and the terminal equipment receives a PDCCH command sent by the network equipment, wherein the PDCCH command is used for indicating the terminal equipment to send the PRACH.

In a second aspect, a method for transmitting a PRACH is provided, including: the network equipment determines space related information used for the terminal equipment to send the PRACH; and the network equipment indicates the space related information of the PRACH to the terminal equipment.

Therefore, the network device determines appropriate spatial correlation information for the transmission of the PRACH, and indicates the spatial correlation information to the terminal device, so that the terminal device sends the PRACH based on the spatial correlation information, thereby improving the transmission performance of the PRACH and further improving the system performance.

With reference to the second aspect, in a possible implementation manner of the second aspect, the spatial correlation information of the PRACH includes: the spatial correlation information corresponding to Sounding Reference Signal (SRS) resources, the spatial correlation information corresponding to Synchronization Signal Blocks (SSBs), or the spatial correlation information corresponding to channel state indication reference signal (CSI-RS).

With reference to the second aspect or any one of the foregoing possible implementations, in another possible implementation of the second aspect, the indicating, by the network device, the spatial correlation information of the PRACH to a terminal device includes: and the network equipment sends first indication information to the terminal equipment, wherein the first indication information is used for indicating the space related information of the PRACH.

With reference to the second aspect or any one of the foregoing possible implementation manners, in another possible implementation manner of the second aspect, the first indication information is carried in downlink control information DCI, a medium access control MAC control element CE, or radio resource control RRC signaling.

With reference to the second aspect or any one of the foregoing possible implementation manners, in another possible implementation manner of the second aspect, the first indication information indicates any one of the following information: identification information of an SRS resource, identification information of a synchronization signal block SSB, or identification information of a channel state indication reference signal CSI-RS.

With reference to the second aspect or any one of the foregoing possible implementation manners, in another possible implementation manner of the second aspect, the determining, by the network device, spatial correlation information for a terminal device to send a PRACH includes: the network equipment determines Physical Uplink Control Channel (PUCCH) resources associated with the PRACH; the network device determines spatial correlation information used for sending the PRACH, and the spatial correlation information is spatial correlation information corresponding to the PUCCH resource associated with the PRACH.

With reference to the second aspect or any one of the foregoing possible implementations, in another possible implementation of the second aspect, the indicating, by the network device, the spatial correlation information of the PRACH to a terminal device includes: and the network equipment sends second indication information to the terminal equipment, wherein the second indication information is used for indicating the PUCCH resources associated with the PRACH.

With reference to the second aspect or any one of the foregoing possible implementation manners, in another possible implementation manner of the second aspect, the second indication information is carried in DCI, MAC CE, or RRC signaling.

With reference to the second aspect or any one of the foregoing possible implementations, in another possible implementation of the second aspect, the determining, by the network device, a PUCCH resource associated with the PRACH includes: the network equipment determines the PUCCH resource associated with the PRACH according to the transmission time of the PUCCH.

With reference to the second aspect or any one of the foregoing possible implementations, in another possible implementation of the second aspect, the determining, by the network device, the PUCCH resource associated with the PRACH according to a transmission time of a PUCCH includes: the network device determines the PUCCH resource associated with the PRACH as a PUCCH resource of a most recent transmission.

With reference to the second aspect or any one of the foregoing possible implementations, in another possible implementation of the second aspect, the determining, by the network device, the PUCCH resource associated with the PRACH according to a transmission time of a PUCCH includes: the network equipment determines the PUCCH resource associated with the PRACH as the PUCCH resource where the PUCCH transmitted last time before the time length of T1 is located.

With reference to the second aspect or any one of the foregoing possible implementations, in another possible implementation of the second aspect, the determining, by the network device, a PUCCH resource associated with a PRACH includes: and the network equipment determines the PUCCH resource associated with the PRACH according to the resource number of the PUCCH resource.

With reference to the second aspect or any one of the foregoing possible implementations, in another possible implementation of the second aspect, the determining, by the network device, the PUCCH resource associated with the PRACH according to a resource number of the PUCCH resource includes: the network equipment determines the PRACH associated with the PRACH as a PUCCH resource with the maximum resource number, the minimum resource number or the predetermined value.

With reference to the second aspect or any one of the foregoing possible implementations, in another possible implementation of the second aspect, the determining, by the network device, a PUCCH resource associated with the PRACH includes: the network equipment determines the PUCCH resource associated with the PRACH according to the format of the PUCCH.

With reference to the second aspect or any one of the foregoing possible implementations, in another possible implementation of the second aspect, the determining, by the network device, the PUCCH resource associated with the PRACH according to a format of a PUCCH includes: the network equipment determines the PUCCH resources associated with the PRACH, and the PUCCH resources corresponding to the PUCCH format with the largest format number, the smallest format number or the predetermined value.

With reference to the second aspect or any one of the foregoing possible implementations, in another possible implementation of the second aspect, the determining, by the network device, a PUCCH resource associated with a PRACH includes: and the network equipment determines the PUCCH resource associated with the PRACH according to the information content carried in the PUCCH resource.

With reference to the second aspect or any one of the foregoing possible implementations, in another possible implementation of the second aspect, the determining, by the network device, the PUCCH resource associated with the PRACH according to information content carried in the PUCCH resource includes: the network equipment determines the PUCCH resource associated with the PRACH, and the PUCCH resource carries acknowledgement/negative acknowledgement (ACK/NACK) information or CSI information.

With reference to the second aspect or any one of the foregoing possible implementations, in another possible implementation of the second aspect, the determining, by the network device, a PUCCH resource associated with the PRACH includes: and the network equipment determines the PUCCH resource associated with the PRACH according to the transmission mode of the Channel State Information (CSI).

With reference to the second aspect or any one of the foregoing possible implementations, in another possible implementation of the second aspect, the determining, by the network device, the PUCCH resource associated with the PRACH according to a CSI transmission scheme includes: the network device determines the PUCCH resource associated with the PRACH as a PUCCH resource for simultaneously transmitting multiple CSIs or transmitting a single CSI.

With reference to the second aspect or any one of the foregoing possible implementations, in another possible implementation of the second aspect, the PUCCH resource associated with the PRACH is a currently activated PUCCH resource, or a PUCCH resource that is not currently activated but has been configured by a network device for a subsequent PUCCH transmission.

With reference to the second aspect or any one of the foregoing possible implementations, in another possible implementation of the second aspect, the determining, by the network device, spatial correlation information for transmitting the PRACH according to the PUCCH resource associated with the PRACH includes: when the number of the spatial correlation information corresponding to the PUCCH resource is multiple, the network equipment determines the spatial correlation information used for sending the PRACH, and the spatial correlation information is currently activated or used by the PUCCH resource; or, when there are a plurality of pieces of spatial correlation information corresponding to the PUCCH resource, the network device determines spatial correlation information used for transmitting the PRACH, and the spatial correlation information is spatial correlation information with a largest number, a smallest number, or a predetermined value among the plurality of pieces of spatial correlation information corresponding to the PUCCH resource.

With reference to the second aspect or any one of the foregoing possible implementations, in another possible implementation of the second aspect, the determining, by the network device, a PUCCH resource associated with a PRACH includes: the network device determines the PUCCH resource associated with the PRACH among a plurality of candidate PUCCH resources.

With reference to the second aspect or any one of the foregoing possible implementation manners, in another possible implementation manner of the second aspect, the method further includes: the network equipment sends third indication information to the terminal equipment, wherein the third indication information is used for indicating the candidate PUCCH resources, and the candidate PUCCH resources are used for the terminal equipment to determine the PUCCH resource associated with the PRACH

With reference to the second aspect or any one of the foregoing possible implementation manners, in another possible implementation manner of the second aspect, the determining, by the network device, spatial correlation information for a terminal device to send a PRACH includes: the network equipment determines primary data transmission associated with the PRACH on a Physical Uplink Shared Channel (PUSCH); the network device determines spatial correlation information for transmitting the PRACH, the spatial correlation information being used for the one-time data transmission associated with the PRACH.

With reference to the second aspect or any one of the foregoing possible implementations, in another possible implementation of the second aspect, the determining, by the network device, a primary transmission associated with the PRACH on a PUSCH includes: and the network equipment determines the primary data transmission associated with the PRACH according to the transmission time of the data transmission on the PUSCH.

With reference to the second aspect or any one of the foregoing possible implementations, in another possible implementation of the second aspect, the determining, by the network device, the one data transmission associated with the PRACH according to a transmission time of the data transmission on the PUSCH includes: the network device determines the one data transmission associated with the PRACH as a last data transmission on the PUSCH.

With reference to the second aspect or any one of the foregoing possible implementations, in another possible implementation of the second aspect, the determining, by the network device, the one data transmission associated with the PRACH according to a transmission time of the data transmission on the PUSCH includes: the network device determines the one data transmission associated with the PRACH as the last data transmission on the PUSCH before the time length of T2.

With reference to the second aspect or any one of the foregoing possible implementations, in another possible implementation of the second aspect, the determining, by the network device, a primary transmission associated with the PRACH on a PUSCH includes: the network device determines the one-time data transmission associated with the PRACH as the transmission of a random access message 3 MSG.3.

With reference to the second aspect or any one of the foregoing possible implementation manners, in another possible implementation manner of the second aspect, the determining, by the network device, spatial correlation information for a terminal device to send a PRACH includes: and the network equipment determines the space related information of the PRACH according to the PDCCH command for scheduling the PRACH.

With reference to the second aspect or any one of the foregoing possible implementations, in another possible implementation of the second aspect, the determining, by the network device, spatial related information for transmitting the PRACH according to a PDCCH order for scheduling the PRACH includes: and the network equipment determines the space related information for sending the PRACH according to TCI information corresponding to a control resource set for transmitting the PDCCH command.

With reference to the second aspect or any one of the foregoing possible implementation manners, in another possible implementation manner of the second aspect, the determining, by the network device, spatial related information for sending the PRACH according to TCI information corresponding to a control resource set for transmitting the PDCCH order includes: the network device determines spatial correlation information of the PRACH according to a first reference signal, where the first reference signal is a reference signal indicated by the TCI information corresponding to the control resource set.

With reference to the second aspect or any one of the foregoing possible implementation manners, in another possible implementation manner of the second aspect, the determining, by the network device, spatial related information for sending the PRACH according to TCI information corresponding to a control resource set for transmitting the PDCCH order includes: and the network equipment determines the spatial correlation information of the PRACH according to the reference signal resource associated with the first reference signal.

With reference to the second aspect or any one of the foregoing possible implementation manners, in another possible implementation manner of the second aspect, the method further includes: the network device sends fourth indication information to the terminal device, where the fourth indication information is used to indicate multiple candidate pieces of spatial correlation information, and the multiple candidate pieces of spatial correlation information are used by the terminal device to determine spatial correlation information of the PRACH.

With reference to the second aspect or any one of the foregoing possible implementation manners, in another possible implementation manner of the second aspect, the third indication information is carried in DCI, MAC CE, or RRC signaling.

With reference to the second aspect or any one of the foregoing possible implementation manners, in another possible implementation manner of the second aspect, the method further includes: and the network equipment sends a PDCCH order to the terminal equipment, wherein the PDCCH order is used for indicating the terminal equipment to send the PRACH.

In a third aspect, a terminal device is provided, where the terminal device may perform the operations of the terminal device in the first aspect or any optional implementation manner of the first aspect. In particular, the terminal device may comprise a terminal device for performing the first aspect or any possible implementation manner of the first aspect.

In a fourth aspect, a network device is provided, which may perform the operations of the network device in the second aspect or any optional implementation manner of the second aspect. In particular, the network device may comprise a network device for performing the second aspect or any possible implementation of the second aspect.

In a fifth aspect, a terminal device is provided, which includes: a processor, a transceiver, and a memory. Wherein the processor, the transceiver and the memory are in communication with each other via an internal connection path. The memory is configured to store instructions and the processor is configured to execute the instructions stored by the memory. When the processor executes the instructions stored in the memory, the execution causes the terminal device to perform the method of the first aspect or any possible implementation manner of the first aspect, or the execution causes the terminal device to implement the terminal device provided by the third aspect.

In a sixth aspect, a network device is provided, which includes: a processor, a transceiver, and a memory. Wherein the processor, the transceiver and the memory are in communication with each other via an internal connection path. The memory is configured to store instructions and the processor is configured to execute the instructions stored by the memory. When the processor executes the instructions stored by the memory, the execution causes the network device to perform the method of the second aspect or any possible implementation manner of the second aspect, or the execution causes the network device to implement the network device provided by the fourth aspect.

In a seventh aspect, a system chip is provided, where the system chip includes an input interface, an output interface, a processor and a memory, and the processor is configured to execute instructions stored in the memory, and when the instructions are executed, the processor may implement the method in the foregoing first aspect or any possible implementation manner of the first aspect.

In an eighth aspect, a system chip is provided, which includes an input interface, an output interface, a processor and a memory, wherein the processor is configured to execute instructions stored in the memory, and when the instructions are executed, the processor may implement the method in the foregoing second aspect or any possible implementation manner of the second aspect.

A ninth aspect provides a computer program product comprising instructions which, when run on a computer, cause the computer to perform the method of the first aspect or any possible implementation of the first aspect.

A tenth aspect provides a computer program product comprising instructions which, when run on a computer, cause the computer to perform the method of the second aspect or any possible implementation of the second aspect.

Drawings

Fig. 1 is a schematic diagram of a possible wireless communication system to which an embodiment of the present application is applied.

Fig. 2 is a schematic flow chart of a method for transmitting PRACH according to an embodiment of the present application.

Fig. 3 is a schematic flow chart of a method for transmitting PRACH according to an embodiment of the present application.

Fig. 4 is a schematic block diagram of a terminal device according to an embodiment of the present application.

Fig. 5 is a schematic block diagram of a network device of an embodiment of the present application.

Fig. 6 is a schematic configuration diagram of a communication apparatus according to an embodiment of the present application.

Fig. 7 is a schematic structural diagram of a system chip according to an embodiment of the present application.

Detailed Description

The technical scheme of the embodiment of the application can be applied to various communication systems, for example: a Global System for Mobile communications (GSM) System, a Code Division Multiple Access (CDMA) System, a Wideband Code Division Multiple Access (WCDMA) System, a General Packet Radio Service (GPRS), a Long Term Evolution (LTE), a Frequency Division Duplex (FDD) System, a Time Division Duplex (TDD), a Universal Mobile Telecommunications System (UMTS), a Worldwide Interoperability for Microwave Access (WiMAX) communication System, or a 5G System in the future.

Fig. 1 illustrates a wireless communication system 100 to which an embodiment of the present application is applied. The wireless communication system 100 may include a network device 110. Network device 110 may be a device that communicates with a terminal device. Network device 110 may provide communication coverage for a particular geographic area and may communicate with terminal devices (e.g., UEs) located within the coverage area. Optionally, the Network device 100 may be a Base Transceiver Station (BTS) in a GSM system or a CDMA system, a Base Station (NodeB, NB) in a WCDMA system, an evolved Node B (eNB or eNodeB) in an LTE system, or a wireless controller in a Cloud Radio Access Network (CRAN), or a Network device in a relay Station, an Access point, a vehicle-mounted device, a wearable device, a Network-side device in a future 5G Network, or a Network device in a future evolved Public Land Mobile Network (PLMN), or the like.

The wireless communication system 100 also includes at least one terminal device 120 located within the coverage area of the network device 110. The terminal device 120 may be mobile or stationary. Alternatively, terminal Equipment 120 may refer to an access terminal, User Equipment (UE), subscriber unit, subscriber station, mobile station, remote terminal, mobile device, User terminal, wireless communication device, User agent, or User Equipment. An access terminal may be a cellular telephone, a cordless telephone, a Session Initiation Protocol (SIP) phone, a Wireless Local Loop (WLL) station, a Personal Digital Assistant (PDA), a handheld device having Wireless communication capabilities, a computing device or other processing device connected to a Wireless modem, a vehicle mounted device, a wearable device, a terminal device in a future 5G network or a terminal device in a future evolved PLMN, etc. Optionally, a Device to Device (D2D) communication may be performed between the terminal devices 120.

Fig. 1 exemplarily shows one network device and two terminal devices, and optionally, the wireless communication system 100 may include a plurality of network devices and may include other numbers of terminal devices within the coverage of each network device, which is not limited in this embodiment of the present application.

Optionally, the wireless communication system 100 may further include other network entities such as a network controller, a mobility management entity, and the like, which is not limited in this embodiment.

Fig. 2 is a schematic flow chart of a method 200 of transmitting PRACH of an embodiment of the present application. The method described in fig. 2 may be performed by a terminal device, which may be, for example, terminal device 120 shown in fig. 1. As shown in fig. 2, the method 200 for transmitting PRACH includes:

in 210, the terminal device determines spatial correlation information (spatial correlation information) for transmitting the PRACH.

In 220, the terminal device transmits the PRACH based on the spatial correlation information of the PRACH.

Therefore, the terminal device determines appropriate spatial correlation information (or spatial filter or beam) for the transmission of the PRACH, and transmits the PRACH based on the spatial correlation information, thereby improving the transmission performance of the PRACH and further improving the system performance.

The spatial correlation information may be, for example, a transmission beam, a spatial domain transmission filter (spatial domain transmission filter), SRS Resource indication information (SRI), or the like.

For example, the spatial correlation information used for transmitting the PRACH may be understood as a beam used for transmitting the PRACH; or, may be understood as a spatial domain transmission filter used for transmitting the PRACH.

It should be understood that, in the embodiment of the present application, the Spatial correlation information used for receiving a signal or a channel may be understood as a beam or a Spatial domain reception filter (Spatial domain reception filter) used for receiving the signal or the channel; spatial correlation information used to transmit a signal or channel may be understood as a beam or Spatial domain transmission filter (Spatial domain transmission filter) used to transmit the signal or channel. For two signals transmitted or received with the same spatial correlation information, the two signals may be said to be Quasi Co-Located (QCL) or have a QCL relationship with respect to the spatial correlation information.

Optionally, the spatial correlation information of the PRACH includes: spatial correlation information corresponding to a Sounding Reference Signal (SRS) resource, spatial correlation information corresponding to a synchronization Signal Block (SS Block or SSB), or spatial correlation information corresponding to a Channel State Indication Reference Signal (CSI-RS).

The terminal device may obtain spatial correlation information used for transmitting the PRACH by determining spatial correlation information corresponding to an SRS resource, an SSB (e.g., a Synchronization Signal (SS), a Physical Broadcast Channel (PBCH)), or a CSI-RS. It should be understood that the spatial correlation information corresponding to the SRS resource is spatial correlation information used when the SRS associated with the SRS resource is transmitted or spatial correlation information used when the SRS is transmitted on the SRS resource, the spatial correlation information corresponding to the SSB is spatial correlation information used when the SSB is transmitted, and the spatial correlation information corresponding to the CSI-RS is spatial correlation information used when the CSI-RS is transmitted.

For example, the spatial correlation information of the PRACH may be spatial correlation information corresponding to an SRS resource, or spatial correlation information used for transmitting an SSB, or spatial correlation information used for transmitting a CSI-RS. When the spatial correlation information of the PRACH is the spatial correlation information corresponding to the SRS resource, the spatial correlation information may be indicated by an SRI, that is, the PRACH and the SRS indicated by the SRI use the same spatial correlation information for transmission.

The embodiment of the present application provides four ways for a terminal device to determine spatial correlation information used for transmitting a PRACH, which are described below.

Mode 1

Optionally, in 210, the determining, by the terminal device, spatial correlation information for transmitting the PRACH includes: the terminal device receives first indication information sent by a network device, wherein the first indication information is used for indicating the spatial correlation information of the PRACH.

Optionally, the first indication Information is carried in Downlink Control Information (DCI), a Medium Access Control (MAC) Control Element (CE), or Radio Resource Control (RRC) signaling.

The terminal device receives the DCI, the MAC CE, or the RRC signaling carrying the spatial correlation information to obtain the spatial correlation information for transmitting the PRACH.

Optionally, the first indication information is used to indicate any one of the following information: identification information of an SRS resource, identification information of a synchronization signal block SSB, or identification information of a channel state indication reference signal CSI-RS.

Because the spatial correlation information of the PRACH may include spatial correlation information corresponding to an SRS resource, spatial correlation information corresponding to an SSB, or spatial correlation information corresponding to a CSI-RS, the network device may send first indication information to the terminal device to indicate identification information of a certain SRS resource, so that the terminal device determines, according to the SRS resource indicated by the first indication information, spatial correlation information used for the PRACH transmission, for example, transmits the PRACH using a spatial correlation parameter corresponding to the SRS or transmits the PRACH using a spatial correlation parameter corresponding to an SRS resource associated with the SRS; or, the network device may send the first indication information to the terminal device to indicate the identification information of a certain SSB, so that the terminal device determines, according to the SSB indicated by the first indication information, spatial correlation information used for the PRACH transmission, for example, the PRACH is transmitted using spatial correlation parameters corresponding to the SSB; or, the network device may send the first indication information to the terminal device to indicate identification information of a certain CSI-RS, so that the terminal device determines, according to the CSI-RS indicated by the first indication information, spatial correlation information used for the PRACH transmission, for example, transmits the PRACH using spatial correlation parameters corresponding to the CSI-RS.

In the method 1, the network device directly indicates the spatial correlation information for transmitting the PRACH to the terminal device, thereby reducing the complexity of the terminal device.

Mode 2

Optionally, in 210, the determining, by the terminal device, spatial correlation information for transmitting the PRACH includes: the terminal device determines spatial correlation information used for transmitting the PRACH, and the spatial correlation information is spatial correlation information corresponding to a Physical Uplink Control Channel (PUCCH) resource associated with the PRACH.

Optionally, before 210, the method further includes: the terminal device determines the PUCCH resource associated with the PRACH.

Specifically, the terminal device may select a PUCCH resource associated with the PRACH from among the candidate PUCCH resources, and use spatial correlation information corresponding to the PUCCH resource as spatial correlation information for transmitting the PRACH.

The terminal device may determine the PUCCH resource associated with the PRACH by the following six methods (method 1 to method 6).

It should be understood that there may be only one PUCCH resource associated with the PRACH determined according to the following six methods, or there may be multiple PUCCH resources, which is not limited in the embodiments of the present application. For example, when the terminal device determines that there are multiple PUCCH resources associated with the PRACH, the terminal device may autonomously select one PUCCH resource and determine spatial correlation information for transmitting the PRACH according to spatial correlation information corresponding to the PUCCH resource.

Method 1

Optionally, the determining, by the terminal device, the PUCCH resource associated with the PRACH includes: the terminal device receives second indication information sent by a network device, where the second indication information is used to indicate the PUCCH resource associated with the PRACH.

Optionally, the second indication information is carried in DCI, MAC CE, or RRC signaling.

In this embodiment, the network device may send second indication information to the terminal device to indicate the PUCCH resource associated with the PRACH, so that the terminal device may determine, according to the spatial correlation information corresponding to the PUCCH resource, the spatial correlation information used for the PRACH transmission, for example, determine the spatial correlation information corresponding to the PUCCH resource as the spatial correlation information used for transmitting the PRACH.

It should be understood that the spatial correlation information corresponding to the PUCCH resource is the spatial correlation information (or spatial filter or beam) used for transmitting the PUCCH on the PUCCH resource.

Method 2

Optionally, the determining, by the terminal device, the PUCCH resource associated with the PRACH includes: and the terminal equipment determines the PUCCH resource associated with the PRACH according to the transmission time of the PUCCH.

Optionally, the determining, by the terminal device, the PUCCH resource associated with the PRACH according to the transmission time of the PUCCH includes: the terminal device determines the PUCCH resource associated with the PRACH, which is the PUCCH resource where the PUCCH transmitted last time is located.

For example, if the PUCCH that was transmitted last by the terminal device is the PUCCH transmitted in PUCCH resource 2, and the spatial correlation information used to transmit the PUCCH is the spatial correlation information corresponding to PUCCH resource 2, the terminal device may use PUCCH resource 2 as the PUCCH resource associated with the PRACH, and use the spatial correlation information corresponding to PUCCH resource 2 as the spatial correlation information for transmitting the PRACH.

Or, optionally, the determining, by the terminal device, the PUCCH resource associated with the PRACH according to the transmission time of the PUCCH includes: the terminal device determines the PUCCH resource associated with the PRACH to be the PUCCH resource where the last PUCCH transmitted before the time length T1 is located.

For example, the last PUCCH transmitted by the terminal device before the T1 duration (T1 duration is, for example, equal to several slots, symbols, or subframes) is the PUCCH transmitted in PUCCH resource 1. If the spatial correlation information used for sending the PUCCH is the spatial correlation information corresponding to the PUCCH resource 1, the terminal device may use the PUCCH resource 1 as a PUCCH resource associated with the PRACH, and use the spatial correlation information corresponding to the PUCCH resource 1 as the spatial correlation information for transmitting the PRACH.

Of course, the spatial correlation information corresponding to the PUCCH resources used for different PUCCH transmissions may be the same or different.

Method 3

Optionally, the determining, by the terminal device, the PUCCH resource associated with the PRACH includes: and the terminal equipment determines the PUCCH resource associated with the PRACH according to the resource number of the PUCCH resource.

Optionally, the determining, by the terminal device, the PUCCH resource associated with the PRACH according to the resource number of the PUCCH resource includes: the terminal equipment determines the PRACH associated with the PRACH as a PUCCH resource with the maximum resource number, the minimum resource number or the predetermined value.

For example, the terminal device may use the PUCCH resource with the largest resource number as the PUCCH resource associated with the PRACH; or taking the PUCCH resource with the minimum resource number as the PUCCH resource associated with the PRACH; or a certain specific number of PUCCH resources as the PUCCH resource associated with the PRACH.

Of course, the spatial correlation information corresponding to PUCCH resources with different resource numbers may be the same or different.

Method 4

Optionally, the determining, by the terminal device, the PUCCH resource associated with the PRACH includes: and the terminal equipment determines the PUCCH resource associated with the PRACH according to the PUCCH format.

Optionally, the determining, by the terminal device, the PUCCH resource associated with the PRACH according to a PUCCH format includes: the terminal equipment determines the PUCCH resource associated with the PRACH, and the PUCCH resource corresponding to the PUCCH format with the largest format number, the smallest format number or the predetermined value is determined.

For example, assuming that PUCCH format 1, PUCCH format 2, and PUCCH format 3 exist, the terminal device may select a PUCCH resource corresponding to PUCCH format 1 as a PUCCH resource associated with the PRACH; or selecting a PUCCH resource corresponding to PUCCH format 3 as a PUCCH resource associated with the PRACH; or selecting a PUCCH resource corresponding to a specific PUCCH format as a PUCCH resource associated with the PRACH.

It should be understood that a format used when transmitting PUUCH on one PUCCH resource is a PUCCH format corresponding to the PUCCH resource. The PUCCH formats used when transmitting PUCCH on different PUCCH resources may be the same or different.

Of course, the spatial correlation information corresponding to PUCCH resources of different PUCCH formats may be the same or different.

Method 5

Optionally, the determining, by the terminal device, the PUCCH resource associated with the PRACH includes: and the terminal equipment determines the PUCCH resource associated with the PRACH according to the information content carried in the PUCCH resource.

Optionally, the determining, by the terminal device, the PUCCH resource associated with the PRACH according to information content carried in the PUCCH resource includes: the terminal equipment determines the PUCCH resource associated with the PRACH, and the PUCCH resource carries ACK/NACK information or CSI information.

For example, the terminal device may select a PUCCH resource carrying Hybrid Automatic Repeat reQuest (HARQ) Acknowledgement/Negative Acknowledgement (ACK/NACK) information as a PUCCH resource associated with the PRACH; or selecting a PUCCH resource carrying Channel State Information (CSI) information as a PUCCH resource associated with the PRACH.

Of course, the spatial correlation information corresponding to the PUCCH resource carrying the ACK/NACK information may be the same as or different from the spatial correlation information corresponding to the PUCCH resource carrying the CSI information.

Method 6

Optionally, the determining, by the terminal device, the PUCCH resource associated with the PRACH includes: and the terminal equipment determines the PUCCH resource associated with the PRACH according to the transmission mode of the CSI.

Optionally, the determining, by the terminal device, the PUCCH resource associated with the PRACH according to the CSI transmission mode includes: the terminal equipment determines the PUCCH resource associated with the PRACH, and the PUCCH resource transmits a plurality of CSI simultaneously or transmits single CSI.

For example, the terminal device may select a PUCCH resource for simultaneously transmitting multiple CSIs as a PUCCH resource associated with the PRACH; or selecting a PUCCH resource transmitting only a single CSI as a PUCCH resource associated with the PRACH.

Of course, the spatial correlation information corresponding to the PUCCH resources transmitting multiple CSI simultaneously may be the same as or different from the spatial correlation information corresponding to the PUCCH resource transmitting a single CSI.

In the method 2, since the correlation is established between the PUCCH resource and the PRACH, the terminal device may determine the spatial correlation information corresponding to the PRACH based on the correlated PUCCH resource, for example, transmit the PRACH using the spatial correlation information corresponding to the PUCCH resource, thereby improving the transmission performance of the PRACH.

Optionally, the PUCCH resource associated with the PRACH may be a currently activated PUCCH resource, or a PUCCH resource that is not currently activated but has been configured by the network device for a subsequent PUCCH transmission.

Optionally, in 220, the determining, by the terminal device, spatial correlation information for transmitting the PRACH according to the PUCCH resource associated with the PRACH includes: when the number of the spatial correlation information corresponding to the PUCCH resource is multiple, the terminal device determines the spatial correlation information used for transmitting the PRACH, and the spatial correlation information is currently activated or used by the PUCCH resource; or, when there are a plurality of pieces of spatial correlation information corresponding to the PUCCH resource, the terminal device determines spatial correlation information used for transmitting the PRACH, and the spatial correlation information is the spatial correlation information with the largest number, the smallest number, or the predetermined value among the plurality of pieces of spatial correlation information corresponding to the PUCCH resource.

If a PUCCH resource supported in the 5G system may correspond to multiple pieces of spatial correlation information, that is, multiple pieces of spatial correlation information may be used when transmitting PUUCH on one PUCCH resource, the terminal device may determine, according to the spatial correlation information currently activated or used in the PUCCH resource, spatial correlation information used for PRACH transmission; alternatively, the terminal device may use, as the spatial correlation information for transmitting the PRACH, spatial correlation information with a largest number, spatial correlation information with a smallest number, or spatial correlation information with a certain number among the plurality of spatial correlation information corresponding to the PUCCH resource.

Optionally, in 210, the terminal device determines a PUCCH resource associated with the PRACH, including: the terminal device determines the PUCCH resource associated with the PRACH from a plurality of candidate PUCCH resources.

Optionally, the terminal device may obtain third indication information that the candidate multiple PUCCH resources may be sent by the network device through receiving, where the third indication information is used to indicate the candidate multiple PUCCH resources; or the terminal device may acquire the candidate PUCCH resources pre-stored in the terminal device, that is, the candidate PUCCH resources are defined by a pre-agreed protocol, for example.

Mode 3

Optionally, in 210, the determining, by the terminal device, spatial correlation information for transmitting the PRACH includes: the terminal device determines spatial correlation information for transmitting the PRACH, the spatial correlation information being used for one data transmission associated with the PRACH.

Optionally, before 210, the method further includes: the terminal device determines the one data transmission associated with the PRACH on a Physical Uplink Shared Channel (PUSCH).

Specifically, the terminal device may have multiple data transmissions on the PUSCH, and the terminal device may determine one data transmission associated with the PRACH, and use spatial correlation information used by the data transmission as spatial correlation information for transmitting the PRACH.

The terminal device may determine one data transmission associated with the PRACH on the PUSCH by the following two methods (method 1 and method 2).

Method 1

Optionally, the determining, by the terminal device, the one data transmission associated with the PRACH on the PUSCH includes: and the terminal equipment determines the primary data transmission associated with the PRACH according to the transmission time of the data transmission on the PUSCH.

Optionally, the determining, by the terminal device, the one data transmission associated with the PRACH according to the transmission time of the data transmission on the PUSCH includes: the terminal device determines the data transmission associated with the PRACH as the last data transmission on the PUSCH.

For example, if the terminal device transmits N times of data on the PUSCH, that is, if the PUSCH carries N times of data transmission, the terminal device may use the spatial correlation information used for the latest data transmission on the PUSCH, that is, the nth data transmission, as one data transmission associated with the PRACH, so as to use the spatial correlation information used for the one data transmission as the spatial correlation information for transmitting the PRACH.

Or, optionally, the determining, by the terminal device, the one data transmission associated with the PRACH according to the transmission time of the data transmission on the PUSCH includes: the terminal device determines the data transmission associated with the PRACH to be the latest data transmission on the PUSCH before the time length of T2.

For example, if the terminal device transmits N times of data on the PUSCH, that is, if the PUSCH carries N times of data transmission, the terminal device may use spatial correlation information used for the latest data transmission on the PUSCH before a time duration T2 (a time duration T2 is, for example, equal to several slots, symbols, or subframes) as one data transmission associated with the PRACH, so as to use spatial correlation information used for the data transmission as the spatial correlation information for transmitting the PRACH.

Method 2

Optionally, the determining, by the terminal device, the one data transmission associated with the PRACH on the PUSCH includes: the terminal device determines the one data transmission associated with the PRACH as a transmission of a random access message 3 (msg.3).

The msg.3 may be, for example, an RRC setup request message or an RRC connection reestablishment request, etc.

That is, the terminal device may transmit the PRACH using transmitting spatial correlation information of msg.3.

In the method 3, since the association is established between the data transmission on the PUSCH and the PRACH, the terminal device can determine the spatial correlation information corresponding to the PRACH according to the data transmission associated with the PRACH, for example, transmit the PRACH by using the spatial correlation information used for the data transmission, thereby improving the transmission performance of the PRACH.

Mode 4

Optionally, in 210, the determining, by the terminal device, spatial correlation information for transmitting the PRACH includes: and the terminal equipment determines the space related information of the PRACH according to the PDCCH command for scheduling the PRACH.

And after receiving the PDCCH command sent by the network, the terminal equipment sends the PRACH to the network equipment based on the scheduling of the PDCCH command. Therefore, the terminal device may also determine the spatial correlation information of the PRACH based on the PDCCH order, that is, determine the spatial correlation information of the PRACH based on the spatial reception parameters corresponding to the downlink of the PDCCH order.

Optionally, the determining, by the terminal device, the space-related information for transmitting the PRACH according to the PDCCH order for scheduling the PRACH includes: the terminal device determines spatial correlation information for transmitting the PRACH according to Transmission Configuration Indication (TCI) information corresponding to a Control Resource Set (CORESET) for transmitting the PDCCH order.

Optionally, the determining, by the terminal device, spatial correlation information for sending the PRACH according to the TCI information corresponding to the control resource set for transmitting the PDCCH order includes: and the terminal equipment determines the spatial correlation information of the PRACH according to the first reference signal.

Wherein the first reference signal is a reference signal indicated by the TCI information corresponding to the set of control resources. A Quasi-co-located (QCL) relationship is formed between a demodulation Reference Signal (DMRS) of the PDCCH transmitted in the control resource set and the first Reference Signal indicated by the TCI information corresponding to the control resource set. Therefore, the terminal device may determine the spatial correlation information of the PRACH according to the first reference signal. For example, the terminal device may transmit the PRACH based on the spatial reception parameters of the first reference signal.

In the 5G system, a concept of a control resource set is introduced for defining a time-frequency resource set carrying control information. The terminal device detects the PDCCH in the time-frequency resource set to obtain the scheduling information. The configuration information of the control resource set may include, for example, information of frequency domain resources, information of time domain resources, time length information, and the like. In addition, the configuration information of the control resource set may further include TCI information. The terminal device may obtain the Spatial receiving parameter corresponding to the control resource set according to the TCI information, for example, the terminal device may determine, according to the TCI information, that a DMRS antenna port used for receiving a PDCCH in the control resource set and a DMRS antenna port of a certain reference signal are QCL with respect to a Spatial receiving parameter (Spatial Rx parameter), so that the Spatial receiving parameter corresponding to the control resource set is obtained as the Spatial receiving parameter of the reference signal.

For example, if the TCI information indicates SSB 1, that is, the DMRS antenna port used for receiving the PDCCH in the control resource set has a QCL relationship with the DMRS antenna port of SSB 1, or the DMRS antenna port used for receiving the PDCCH in the control resource set may be the DMRS antenna port of SSB 1.

It should be understood that the configuration information of the control resource set may carry at least one piece of TCI information, and the terminal device may select one piece of TCI information from the at least one piece of TCI information corresponding to the control resource set to determine the spatial correlation information of the PRACH, for example, the TCI information may be currently activated or used TCI information.

Optionally, the determining, by the terminal device, spatial correlation information for sending the PRACH according to the TCI information corresponding to the control resource set for transmitting the PDCCH order includes: and the terminal equipment determines the spatial correlation information of the PRACH according to the reference signal resource associated with the first reference signal.

It should be understood that the first reference signal is associated with the reference signal resource, and represents a spatial receiving parameter used for receiving the first reference signal, which is a corresponding spatial receiving parameter of the reference signal resource. The first reference signal has a QCL relationship with respect to spatial reception parameters with respect to the reference signal resources when the first reference signal is associated with the reference signal resources.

For example, the first reference signal is an SRS, and the SRS is associated with one SRS resource, and then, the spatial related information for transmitting the PRACH may be determined according to a spatial reception parameter corresponding to the SRS resource. At this time, the terminal device may transmit the PRACH using the spatial reception parameter corresponding to the SRS resource.

In the manner 4, the terminal device may determine, according to the TCI information corresponding to the control resource set in which the PDCCH order scheduling the PRACH is located, spatial correlation information for transmitting the PRACH, and transmit the PRACH using the spatial correlation information, thereby improving transmission performance of the PRACH.

Optionally, the method further comprises: the terminal device receives fourth indication information sent by the network device, wherein the fourth indication information is used for indicating a plurality of candidate space-related information; or, the terminal device obtains a plurality of candidate spatial correlation information pre-stored in the terminal device.

Wherein, in 210, the determining, by the terminal device, spatial correlation information for transmitting the PRACH includes: the terminal device determines the spatial correlation information of the PRACH from the candidate plurality of spatial correlation information.

Optionally, the fourth indication information is carried in DCI, MAC CE, or RRC signaling.

Optionally, before 210, the method further comprises: and the terminal equipment receives a PDCCH order sent by the network equipment, wherein the PDCCH order is used for indicating the terminal equipment to send the PRACH.

Fig. 3 is a schematic flow chart of a method 300 for transmitting PRACH of an embodiment of the present application. The method described in fig. 3 may be performed by a network device, such as network device 120 shown in fig. 1. As shown in fig. 3, the method 200 for transmitting PRACH includes:

in 310, the network device determines spatial correlation information for the terminal device to transmit the PRACH.

In 320, the network device indicates the spatial correlation information of the PRACH to the terminal device.

Optionally, the spatial correlation information of the PRACH includes: the spatial correlation information corresponding to Sounding Reference Signal (SRS) resources, the spatial correlation information corresponding to Synchronization Signal Blocks (SSBs), or the spatial correlation information corresponding to channel state indication reference signal (CSI-RS).

Optionally, the indicating, by the network device, the spatial correlation information of the PRACH to the terminal device includes: the network device sends first indication information to the terminal device, wherein the first indication information is used for indicating the spatial correlation information of the PRACH.

Optionally, the first indication information is carried in downlink control information DCI, a medium access control MAC control element CE, or radio resource control RRC signaling.

Optionally, the first indication information indicates any one of the following information: identification information of an SRS resource, identification information of a synchronization signal block SSB, or identification information of a channel state indication reference signal CSI-RS.

Optionally, the determining, by the network device, spatial correlation information for the terminal device to send the PRACH includes: the network equipment determines Physical Uplink Control Channel (PUCCH) resources associated with the PRACH; the network device determines spatial correlation information for transmitting the PRACH, and the spatial correlation information is corresponding to the PUCCH resource associated with the PRACH.

Optionally, the indicating, by the network device, the spatial correlation information of the PRACH to the terminal device includes: and the network equipment sends second indication information to the terminal equipment, wherein the second indication information is used for indicating the PUCCH resource associated with the PRACH.

Optionally, the network device determining a PUCCH resource associated with the PRACH includes: the network device determines the PUCCH resource associated with the PRACH according to the transmission time of the PUCCH.

Optionally, the determining, by the network device, the PUCCH resource associated with the PRACH according to a transmission time of the PUCCH includes: the network device determines the PUCCH resource associated with the PRACH as a last transmitted PUCCH resource.

Optionally, the determining, by the network device, the PUCCH resource associated with the PRACH according to a transmission time of the PUCCH includes: the network device determines the PUCCH resource associated with the PRACH to be the PUCCH resource where the last PUCCH transmitted before the time length T1 is located.

Optionally, the network device determining a PUCCH resource associated with the PRACH includes: and the network equipment determines the PUCCH resource associated with the PRACH according to the resource number of the PUCCH resource.

Optionally, the determining, by the network device, the PUCCH resource associated with the PRACH according to the resource number of the PUCCH resource includes: the network device determines the PRACH associated with the PRACH as a PUCCH resource having a maximum resource number, a minimum resource number, or a predetermined value.

Optionally, the network device determining a PUCCH resource associated with the PRACH includes: the network device determines the PUCCH resource associated with the PRACH according to a PUCCH format.

Optionally, the determining, by the network device, the PUCCH resource associated with the PRACH according to a format of a PUCCH includes: the network equipment determines the PUCCH resource associated with the PRACH, and the PUCCH resource corresponding to the PUCCH format with the largest format number, the smallest format number or the predetermined value.

Optionally, the network device determining a PUCCH resource associated with the PRACH includes: and the network equipment determines the PUCCH resource associated with the PRACH according to the information content carried in the PUCCH resource.

Optionally, the determining, by the network device, the PUCCH resource associated with the PRACH according to information content carried in the PUCCH resource includes: the network equipment determines the PUCCH resource associated with the PRACH, and the PUCCH resource carries acknowledgement/negative acknowledgement (ACK/NACK) information or CSI information.

Optionally, the network device determining a PUCCH resource associated with the PRACH includes: and the network equipment determines the PUCCH resource associated with the PRACH according to the transmission mode of the channel state information CSI.

Optionally, the determining, by the network device according to the CSI transmission method, the PUCCH resource associated with the PRACH includes: the network device determines the PUCCH resource associated with the PRACH as a PUCCH resource that transmits multiple CSIs simultaneously or a single CSI.

Optionally, the PUCCH resource associated with the PRACH is a currently activated PUCCH resource, or a PUCCH resource that is not currently activated but has been configured by the network device for a subsequent PUCCH transmission.

Optionally, the determining, by the network device, spatial correlation information for transmitting the PRACH according to the PUCCH resource associated with the PRACH includes: when the number of the spatial correlation information corresponding to the PUCCH resource is multiple, the network device determines the spatial correlation information used for transmitting the PRACH, and the spatial correlation information is currently activated or used by the PUCCH resource; or, when there are a plurality of pieces of spatial correlation information corresponding to the PUCCH resource, the network device determines spatial correlation information used for transmitting the PRACH, and the spatial correlation information is the spatial correlation information with the largest number, the smallest number, or the predetermined value among the plurality of pieces of spatial correlation information corresponding to the PUCCH resource.

Optionally, the network device determining a PUCCH resource associated with the PRACH includes: the network device determines the PUCCH resource associated with the PRACH among a plurality of candidate PUCCH resources.

Optionally, the method further comprises: the network device sends third indication information to the terminal device, where the third indication information is used to indicate the candidate PUCCH resources, and the candidate PUCCH resources are used for the terminal device to determine the PUCCH resource associated with the PRACH.

Optionally, the determining, by the network device, spatial correlation information for the terminal device to send the PRACH includes: the network equipment determines a data transmission associated with the PRACH on a Physical Uplink Shared Channel (PUSCH); the network device determines spatial correlation information for transmitting the PRACH, the spatial correlation information being used for the one data transmission associated with the PRACH.

Optionally, the network device determining a transmission associated with the PRACH on the PUSCH includes: the network equipment determines the one data transmission associated with the PRACH according to the transmission time of the data transmission on the PUSCH.

Optionally, the determining, by the network device, the one data transmission associated with the PRACH according to the transmission time of the data transmission on the PUSCH includes: the network device determines the one data transmission associated with the PRACH as a most recent data transmission on the PUSCH.

Optionally, the determining, by the network device, the one data transmission associated with the PRACH according to the transmission time of the data transmission on the PUSCH includes: the network device determines the data transmission associated with the PRACH to be the last data transmission on the PUSCH before the time duration of T2.

Optionally, the network device determining a transmission associated with the PRACH on the PUSCH includes: the network device determines the one data transmission associated with the PRACH to be a transmission of a random access message 3 msg.3.

Optionally, the determining, by the network device, spatial correlation information for the terminal device to send the PRACH includes: and the network equipment determines the space related information of the PRACH according to the PDCCH command for scheduling the PRACH.

Optionally, the determining, by the network device, the spatial correlation information used for sending the PRACH according to the PDCCH order for scheduling the PRACH includes: and the network equipment determines the space related information for sending the PRACH according to the TCI information corresponding to the control resource set for transmitting the PDCCH order.

Optionally, the determining, by the network device, spatial correlation information for sending the PRACH according to TCI information corresponding to a control resource set for transmitting the PDCCH order includes: the network device determines spatial correlation information of the PRACH according to a first reference signal, where the first reference signal is a reference signal indicated by the TCI information corresponding to the control resource set.

Optionally, the determining, by the network device, spatial correlation information for sending the PRACH according to TCI information corresponding to a control resource set for transmitting the PDCCH order includes: the network device obtains the spatial correlation information of the PRACH according to the reference signal resource associated with the first reference signal.

Optionally, the method further comprises: the network device sends fourth indication information to the terminal device, where the fourth indication information is used to indicate candidate multiple pieces of spatial correlation information, and the candidate multiple pieces of spatial correlation information are used by the terminal device to determine spatial correlation information of the PRACH.

Optionally, the third indication information is carried in DCI, MAC CE, or RRC signaling.

Optionally, the method further comprises: and the network equipment sends a PDCCH order to the terminal equipment, wherein the PDCCH order is used for instructing the terminal equipment to send the PRACH.

It should be understood that, for the process of determining, by the network device, the spatial correlation information for transmitting the PRACH, reference may be made to the description of fig. 2 about the process of determining, by the terminal device, the spatial correlation information for transmitting the PRACH, and details are not described here for brevity.

It should be understood that, in the various embodiments of the present application, the sequence numbers of the above-mentioned processes do not mean the execution sequence, and the execution sequence of each process should be determined by its function and inherent logic, and should not constitute any limitation to the implementation process of the embodiments of the present application.

Having described the method of signal transmission according to the embodiment of the present application in detail, the apparatus according to the embodiment of the present application will be described below with reference to fig. 4 to 7, and the technical features described in the method embodiment are applicable to the following apparatus embodiments.

Fig. 4 is a schematic block diagram of a terminal device 400 according to an embodiment of the application. As shown in fig. 4, the terminal device 400 includes a processing unit 410 and a transceiving unit 420, wherein:

a processing unit 410, configured to determine spatial correlation information for transmitting a PRACH;

a transceiving unit 420, configured to send the PRACH based on the spatial correlation information of the PRACH determined by the determining unit.

Optionally, the processing unit 410 is specifically configured to: receiving, by the transceiver unit 420, first indication information sent by a network device, where the first indication information is used to indicate spatial correlation information of the PRACH.

Optionally, the processing unit 410 is specifically configured to: determining a Physical Uplink Control Channel (PUCCH) resource associated with the PRACH; and determining spatial correlation information for transmitting the PRACH, wherein the spatial correlation information is the spatial correlation information corresponding to the PUCCH resource associated with the PRACH.

Optionally, the processing unit 410 is specifically configured to: receiving, by the transceiver 420, second indication information sent by a network device, where the second indication information is used to indicate the PUCCH resource associated with the PRACH.

Optionally, the processing unit 410 is specifically configured to: determining the PUCCH resource associated with the PRACH according to a transmission time of the PUCCH.

Optionally, the processing unit 410 is specifically configured to: determining the PUCCH resource associated with the PRACH as the PUCCH resource where the PUCCH transmitted last time is located.

Optionally, the processing unit 410 is specifically configured to: determining the PUCCH resource associated with the PRACH as the PUCCH resource in which the PUCCH transmitted last time before the time length of T1 is located.

Optionally, the processing unit 410 is specifically configured to: and determining the PUCCH resource associated with the PRACH according to the resource number of the PUCCH resource.

Optionally, the processing unit 410 is specifically configured to: determining the PRACH associated with the PRACH as a PUCCH resource with a maximum, minimum or equal to a predetermined value in resource number.

Optionally, the processing unit 410 is specifically configured to: determining the PUCCH resource associated with the PRACH according to a format of the PUCCH.

Optionally, the processing unit 410 is specifically configured to: and determining the PUCCH resources associated with the PRACH, wherein the PUCCH resources are PUCCH resources corresponding to PUCCH formats with the largest format number, the smallest format number or the predetermined value.

Optionally, the processing unit 410 is specifically configured to: and determining the PUCCH resource associated with the PRACH according to the information content carried in the PUCCH resource.

Optionally, the processing unit 410 is specifically configured to: determining the PUCCH resource associated with the PRACH as a PUCCH resource carrying acknowledgement/negative acknowledgement (ACK/NACK) information or CSI information.

Optionally, the processing unit 410 is specifically configured to: and determining the PUCCH resource associated with the PRACH according to the transmission mode of the Channel State Information (CSI).

Optionally, the processing unit 410 is specifically configured to: determining the PUCCH resource associated with the PRACH as a PUCCH resource for simultaneously transmitting multiple CSI or transmitting single CSI.

Optionally, the PUCCH resource associated with the PRACH is a currently activated PUCCH resource, or a PUCCH resource that is not currently activated but has been configured by a network device for subsequent PUCCH transmission.

Optionally, the processing unit 410 is specifically configured to: when the number of the space-related information corresponding to the PUCCH resource is multiple, determining the space-related information used for sending the PRACH, wherein the space-related information is the space-related information currently activated or used by the PUCCH resource; or when the number of the spatial correlation information corresponding to the PUCCH resource is multiple, determining the spatial correlation information used for transmitting the PRACH, and determining the spatial correlation information with a largest number, a smallest number, or a predetermined value among the multiple spatial correlation information corresponding to the PUCCH resource.

Optionally, the processing unit 410 is specifically configured to: determining the PUCCH resource associated with the PRACH among a candidate plurality of PUCCH resources.

Optionally, the processing unit 410 is further configured to: receiving, by the transceiver unit 420, third indication information sent by a network device, where the third indication information is used to indicate the candidate multiple PUCCH resources; or, acquiring the candidate plurality of PUCCH resources pre-stored in the terminal device.

Optionally, the processing unit 410 is specifically configured to: determining a primary data transmission associated with the PRACH on a Physical Uplink Shared Channel (PUSCH); determining spatial correlation information for transmitting the PRACH, the spatial correlation information being used for the one data transmission associated with the PRACH.

Optionally, the processing unit 410 is specifically configured to: and determining the primary data transmission associated with the PRACH according to the transmission time of the data transmission on the PUSCH.

Optionally, the processing unit 410 is specifically configured to: determining the one data transmission associated with the PRACH as a last data transmission on the PUSCH.

Optionally, the processing unit 410 is specifically configured to: determining the one data transmission associated with the PRACH as a last data transmission on the PUSCH before a time length of T2.

Optionally, the processing unit 410 is specifically configured to: determining the one-time data transmission associated with the PRACH as transmission of a random access message 3 MSG.3.

Optionally, the processing unit 410 is specifically configured to: and determining the space related information of the PRACH according to a Physical Downlink Control Channel (PDCCH) command for scheduling the PRACH.

Optionally, the processing unit 410 is specifically configured to: and determining space related information for sending the PRACH according to Transmission Configuration Indication (TCI) information corresponding to a control resource set for transmitting the PDCCH order.

Optionally, the processing unit 410 is specifically configured to: determining spatial correlation information of the PRACH according to a first reference signal, where the first reference signal is a reference signal indicated by the TCI information corresponding to the control resource set.

Optionally, the processing unit 410 is specifically configured to: and determining the spatial correlation information of the PRACH according to the reference signal resource associated with the first reference signal.

Optionally, the processing unit 410 is further configured to: receiving, by the receiving unit, fourth indication information sent by the network device, where the fourth indication information is used to indicate candidate multiple pieces of spatial correlation information; or, acquiring a plurality of candidate space-related information pre-stored in the terminal device; wherein the processing unit 410 is specifically configured to: determining spatial correlation information of the PRACH from the candidate plurality of spatial correlation information.

Optionally, the transceiver unit 420 is further configured to: and receiving a PDCCH command sent by the network equipment, wherein the PDCCH command is used for indicating the terminal equipment to send the PRACH.

It should be understood that the terminal device 400 can perform corresponding operations performed by the terminal device in the method 300, and therefore, for brevity, detailed description is omitted here.

Fig. 5 is a schematic block diagram of a network device 500 according to an embodiment of the present application. As shown in fig. 5, the network device 500 includes a processing unit 510 and a transceiving unit 520. Wherein:

a processing unit 510, configured to determine spatial correlation information for a terminal device to send a PRACH;

a transceiver 520, configured to indicate the spatial correlation information of the PRACH determined by the processor 510 to the terminal device.

Optionally, the transceiver unit 520 is specifically configured to: and sending first indication information to the terminal equipment, wherein the first indication information is used for indicating the space related information of the PRACH.

Optionally, the processing unit 510 is specifically configured to: determining a Physical Uplink Control Channel (PUCCH) resource associated with the PRACH; and determining spatial correlation information for transmitting the PRACH, wherein the spatial correlation information is the spatial correlation information corresponding to the PUCCH resource associated with the PRACH.

Optionally, the transceiver unit 520 is specifically configured to: and sending second indication information to the terminal equipment, wherein the second indication information is used for indicating the PUCCH resources associated with the PRACH.

Optionally, the processing unit 510 is specifically configured to: determining the PUCCH resource associated with the PRACH according to a transmission time of the PUCCH.

Optionally, the processing unit 510 is specifically configured to: determining the PUCCH resource associated with the PRACH as a PUCCH resource of a most recent transmission.

Optionally, the processing unit 510 is specifically configured to: determining the PUCCH resource associated with the PRACH as the PUCCH resource in which the PUCCH transmitted last time before the time length of T1 is located.

Optionally, the processing unit 510 is specifically configured to: and determining the PUCCH resource associated with the PRACH according to the resource number of the PUCCH resource.

Optionally, the processing unit 510 is specifically configured to: determining the PRACH associated with the PRACH as a PUCCH resource with a maximum, minimum or equal to a predetermined value in resource number.

Optionally, the processing unit 510 is specifically configured to: determining the PUCCH resource associated with the PRACH according to a format of the PUCCH.

Optionally, the processing unit 510 is specifically configured to: and determining the PUCCH resources associated with the PRACH, wherein the PUCCH resources are PUCCH resources corresponding to PUCCH formats with the largest format number, the smallest format number or the predetermined value.

Optionally, the processing unit 510 is specifically configured to: and determining the PUCCH resource associated with the PRACH according to the information content carried in the PUCCH resource.

Optionally, the processing unit 510 is specifically configured to: determining the PUCCH resource associated with the PRACH as a PUCCH resource carrying acknowledgement/negative acknowledgement (ACK/NACK) information or CSI information.

Optionally, the processing unit 510 is specifically configured to: and determining the PUCCH resource associated with the PRACH according to the transmission mode of the Channel State Information (CSI).

Optionally, the processing unit 510 is specifically configured to: determining the PUCCH resource associated with the PRACH as a PUCCH resource for simultaneously transmitting multiple CSI or transmitting single CSI.

Optionally, the processing unit 510 is specifically configured to: when the number of the space-related information corresponding to the PUCCH resource is multiple, determining the space-related information used for sending the PRACH, wherein the space-related information is the space-related information currently activated or used by the PUCCH resource; or when the number of the spatial correlation information corresponding to the PUCCH resource is multiple, determining the spatial correlation information used for transmitting the PRACH, and determining the spatial correlation information with a largest number, a smallest number, or a predetermined value among the multiple spatial correlation information corresponding to the PUCCH resource.

Optionally, the processing unit 510 is specifically configured to: determining the PUCCH resource associated with the PRACH among a candidate plurality of PUCCH resources.

Optionally, the transceiver unit 520 is further configured to: sending third indication information to the terminal device, wherein the third indication information is used for indicating the candidate PUCCH resources, and the candidate PUCCH resources are used for the terminal device to determine the PUCCH resource associated with the PRACH

Optionally, the processing unit 510 is specifically configured to: determining a primary data transmission associated with the PRACH on a Physical Uplink Shared Channel (PUSCH); determining spatial correlation information for transmitting the PRACH, the spatial correlation information being used for the one data transmission associated with the PRACH.

Optionally, the processing unit 510 is specifically configured to: and determining the primary data transmission associated with the PRACH according to the transmission time of the data transmission on the PUSCH.

Optionally, the processing unit 510 is specifically configured to: determining the one data transmission associated with the PRACH as a last data transmission on the PUSCH.

Optionally, the processing unit 510 is specifically configured to: determining the one data transmission associated with the PRACH as a last data transmission on the PUSCH before a time length of T2.

Optionally, the processing unit 510 is specifically configured to: determining the one-time data transmission associated with the PRACH as transmission of a random access message 3 MSG.3.

Optionally, the processing unit 510 is specifically configured to: and determining the space related information of the PRACH according to the PDCCH command for scheduling the PRACH.

Optionally, the processing unit 510 is specifically configured to: and determining space related information for sending the PRACH according to TCI information corresponding to a control resource set for transmitting the PDCCH order.

Optionally, the processing unit 510 is specifically configured to: determining spatial correlation information of the PRACH according to a first reference signal, where the first reference signal is a reference signal indicated by the TCI information corresponding to the control resource set.

Optionally, the processing unit 510 is specifically configured to: and determining the spatial correlation information of the PRACH according to the reference signal resource associated with the first reference signal.

Optionally, the transceiver unit 520 is further configured to: and sending fourth indication information to the terminal device, where the fourth indication information is used to indicate multiple candidate pieces of spatial correlation information, and the multiple candidate pieces of spatial correlation information are used by the terminal device to determine spatial correlation information of the PRACH.

Optionally, the transceiver unit 520 is further configured to: and sending a PDCCH order to the terminal equipment, wherein the PDCCH order is used for indicating the terminal equipment to send the PRACH.

It should be understood that the network device 500 can perform the corresponding operations performed by the network device in the method 300, and therefore, for brevity, the description is not repeated herein.

Fig. 6 is a schematic configuration diagram of a communication apparatus 600 according to an embodiment of the present application. As shown in fig. 6, the communication device includes a processor 610, a transceiver 620, and a memory 630, wherein the processor 610, the transceiver 620, and the memory 630 communicate with each other through an internal connection path. The memory 630 is used for storing instructions, and the processor 610 is used for executing the instructions stored in the memory 630 to control the transceiver 620 to receive signals or transmit signals.

Optionally, the processor 610 may call the program code stored in the memory 630 to execute the corresponding operation of the terminal device in the method 200, which is not described herein again for brevity.

Optionally, the processor 610 may call the program code stored in the memory 630 to perform corresponding operations performed by the network device in the method 300, which are not described herein again for brevity.

It should be understood that the processor of the embodiments of the present application may be an integrated circuit chip having signal processing capabilities. In implementation, the steps of the above method embodiments may be performed by integrated logic circuits of hardware in a processor or instructions in the form of software. The Processor may be a general purpose Processor, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), an off-the-shelf Programmable Gate Array (FPGA) or other Programmable logic device, discrete Gate or transistor logic device, or discrete hardware components. The various methods, steps, and logic blocks disclosed in the embodiments of the present application may be implemented or performed. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like. The steps of the method disclosed in connection with the embodiments of the present application may be directly implemented by a hardware decoding processor, or implemented by a combination of hardware and software modules in the decoding processor. The software module may be located in ram, flash memory, rom, prom, or eprom, registers, etc. storage media as is well known in the art. The storage medium is located in a memory, and a processor reads information in the memory and completes the steps of the method in combination with hardware of the processor.

It will be appreciated that the memory in the embodiments of the subject application can be either volatile memory or nonvolatile memory, or can include both volatile and nonvolatile memory. The non-volatile Memory may be a Read-Only Memory (ROM), a Programmable ROM (PROM), an Erasable PROM (EPROM), an Electrically Erasable PROM (EEPROM), or a flash Memory. Volatile Memory can be Random Access Memory (RAM), which acts as external cache Memory. By way of example, but not limitation, many forms of RAM are available, such as Static random access memory (Static RAM, SRAM), Dynamic Random Access Memory (DRAM), Synchronous Dynamic random access memory (Synchronous DRAM, SDRAM), Double Data Rate Synchronous Dynamic random access memory (DDR SDRAM), Enhanced Synchronous SDRAM (ESDRAM), Synchronous link SDRAM (SLDRAM), and Direct Rambus RAM (DR RAM). It should be noted that the memories of the systems and methods described herein are intended to comprise, without being limited to, these and any other suitable types of memory.

Fig. 7 is a schematic structural diagram of a system chip according to an embodiment of the present application. The system chip 700 of fig. 7 includes an input interface 701, an output interface 702, at least one processor 703 and a memory 704, where the input interface 701, the output interface 702, the processor 703 and the memory 704 are connected to each other through an internal connection path. The processor 703 is configured to execute the code in the memory 704.

Optionally, when the code is executed, the processor 703 may implement corresponding operations performed by the terminal device in the method 200. For brevity, no further description is provided herein.

Optionally, when the code is executed, the processor 703 may implement the corresponding operations performed by the network device in the method 300. For brevity, no further description is provided herein.

It should be understood that in the embodiment of the present invention, "B corresponding to (corresponding to) a" means that B is associated with a, from which B can be determined. It should also be understood that determining B from a does not mean determining B from a alone, but may be determined from a and/or other information.

Those of ordinary skill in the art will appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the implementation. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present application.

It is clear to those skilled in the art that, for convenience and brevity of description, the specific working processes of the above-described systems, apparatuses and units may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.

In the several embodiments provided in the present application, it should be understood that the disclosed system, apparatus and method may be implemented in other ways. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the unit is only one logical functional division, and other divisions may be realized in practice, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.

The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.

In addition, each functional unit in the embodiments of the present application may be integrated into one monitoring unit, or each unit may exist alone physically, or two or more units are integrated into one unit.

The functions, if implemented in the form of software functional units and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present application or portions thereof that substantially contribute to the prior art may be embodied in the form of a software product stored in a storage medium and including instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present application. And the aforementioned storage medium includes: various media capable of storing program codes, such as a usb disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk, or an optical disk.

The above description is only for the specific embodiments of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present application, and shall be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

A method for transmitting a Physical Random Access Channel (PRACH), the method comprising:

the terminal equipment determines space related information for sending the PRACH;

and the terminal equipment sends the PRACH based on the space related information of the PRACH.
The method of claim 1, wherein the spatial correlation information for the PRACH comprises:

the spatial correlation information corresponding to Sounding Reference Signal (SRS) resources, the spatial correlation information corresponding to Synchronization Signal Blocks (SSBs), or the spatial correlation information corresponding to channel state indication reference signal (CSI-RS).
The method of claim 1 or 2, wherein the determining, by the terminal device, spatial correlation information for transmitting the PRACH comprises:

the terminal device receives first indication information sent by a network device, wherein the first indication information is used for indicating the space related information of the PRACH.
The method of claim 3, wherein the first indication information is carried in Downlink Control Information (DCI), a Medium Access Control (MAC) Control Element (CE), or Radio Resource Control (RRC) signaling.
The method according to any one of claims 2 to 4, wherein the first indication information is used for indicating any one of the following information:

identification information of an SRS resource, identification information of a synchronization signal block SSB, or identification information of a channel state indication reference signal CSI-RS.
The method of claim 1 or 2, wherein the determining, by the terminal device, spatial correlation information for transmitting the PRACH comprises:

the terminal equipment determines Physical Uplink Control Channel (PUCCH) resources associated with the PRACH;

and the terminal equipment determines the space related information used for sending the PRACH, and the space related information is the space related information corresponding to the PUCCH resource associated with the PRACH.
The method of claim 6, wherein the determining, by the terminal device, the PUCCH resource associated with the PRACH comprises:

and the terminal equipment receives second indication information sent by network equipment, wherein the second indication information is used for indicating the PUCCH resources associated with the PRACH.
The method of claim 7, wherein the second indication information is carried in DCI, MAC CE, or RRC signaling.
The method of claim 6, wherein the determining, by the terminal device, the PUCCH resources associated with the PRACH comprises:

and the terminal equipment determines the PUCCH resource associated with the PRACH according to the transmission time of the PUCCH.
The method of claim 9, wherein the terminal device determines the PUCCH resource associated with the PRACH according to a transmission time of a PUCCH, comprising:

and the terminal equipment determines the PUCCH resource associated with the PRACH, and the PUCCH resource is the PUCCH resource where the PUCCH which is transmitted last time is located.
The method of claim 9, wherein the terminal device determines the PUCCH resource associated with the PRACH according to a transmission time of a PUCCH, comprising:

and the terminal equipment determines the PUCCH resource associated with the PRACH as the PUCCH resource where the PUCCH transmitted last time before the time length of T1 is located.
The method of claim 6, wherein the determining, by the terminal device, the PUCCH resource associated with the PRACH comprises:

and the terminal equipment determines the PUCCH resource associated with the PRACH according to the resource number of the PUCCH resource.
The method of claim 12, wherein the determining, by the terminal device, the PUCCH resource associated with the PRACH according to a resource number of the PUCCH resource comprises:

and the terminal equipment determines the PRACH associated with the PRACH, and the PRACH is the PUCCH resource with the maximum resource number, the minimum resource number or the preset value.
The method of claim 6, wherein the determining, by the terminal device, the PUCCH resources associated with the PRACH comprises:

and the terminal equipment determines the PUCCH resource associated with the PRACH according to the format of the PUCCH.
The method of claim 14, wherein the terminal device determines the PUCCH resource associated with the PRACH according to a PUCCH format, comprising:

and the terminal equipment determines the PUCCH resources associated with the PRACH, and the PUCCH resources corresponding to the PUCCH format with the format number being the maximum, the minimum or equal to a preset value.
The method of claim 6, wherein the determining, by the terminal device, the PUCCH resource associated with the PRACH comprises:

and the terminal equipment determines the PUCCH resource associated with the PRACH according to the information content carried in the PUCCH resource.
The method of claim 16, wherein the determining, by the terminal device, the PUCCH resource associated with the PRACH based on information content carried in the PUCCH resource comprises:

and the terminal equipment determines the PUCCH resource associated with the PRACH, and the PUCCH resource carries acknowledgement/negative acknowledgement (ACK/NACK) information or CSI information.
The method of claim 6, wherein the determining, by the terminal device, the PUCCH resources associated with the PRACH comprises:

and the terminal equipment determines the PUCCH resource associated with the PRACH according to the transmission mode of the Channel State Information (CSI).
The method of claim 18, wherein the determining, by the terminal device, the PUCCH resource associated with the PRACH according to a CSI transmission scheme comprises:

the terminal equipment determines the PUCCH resource associated with the PRACH, and the PUCCH resource transmits a plurality of CSI simultaneously or transmits single CSI.
The method of any of claims 6 to 19, wherein the PUCCH resource associated with the PRACH is a currently active PUCCH resource or a PUCCH resource that is currently inactive but has been configured by a network device for subsequent PUCCH transmission.
The method according to any of claims 6 to 20, wherein the determining, by the terminal device, the spatial correlation information for transmitting the PRACH based on the PUCCH resource associated with the PRACH comprises:

when the number of the spatial correlation information corresponding to the PUCCH resource is multiple, the terminal device determines the spatial correlation information used for transmitting the PRACH, and the spatial correlation information is currently activated or used by the PUCCH resource; alternatively, the first and second electrodes may be,

when the number of the spatial correlation information corresponding to the PUCCH resource is multiple, the terminal device determines the spatial correlation information used for transmitting the PRACH, and the spatial correlation information is the spatial correlation information with the largest number, the smallest number, or the predetermined value among the multiple spatial correlation information corresponding to the PUCCH resource.
The method according to any of claims 6 to 21, wherein the determining, by the terminal device, a PUCCH resource associated with PRACH comprises:

the terminal device determines the PUCCH resource associated with the PRACH from a plurality of candidate PUCCH resources.
The method of claim 22, further comprising:

the terminal equipment receives third indication information sent by network equipment, wherein the third indication information is used for indicating the candidate PUCCH resources; alternatively, the first and second electrodes may be,

the terminal equipment acquires the candidate PUCCH resources pre-stored in the terminal equipment.
The method of claim 1 or 2, wherein the determining, by the terminal device, spatial correlation information for transmitting the PRACH comprises:

the terminal equipment determines primary data transmission associated with the PRACH on a Physical Uplink Shared Channel (PUSCH);

the terminal device determines spatial correlation information used for sending the PRACH, and the spatial correlation information is used for the primary data transmission associated with the PRACH.
The method of claim 24, wherein the determining, by the terminal device, one data transmission on a PUSCH associated with the PRACH comprises:

and the terminal equipment determines the primary data transmission associated with the PRACH according to the transmission time of the data transmission on the PUSCH.
The method of claim 25, wherein the determining, by the terminal device, to be used for the one data transmission associated with the PRACH according to a transmission time of the data transmission on the PUSCH comprises:

the terminal equipment determines the one-time data transmission associated with the PRACH, and the one-time data transmission is the latest data transmission on the PUSCH.
The method of claim 25, wherein the determining, by the terminal device, to be used for the one data transmission associated with the PRACH according to a transmission time of the data transmission on the PUSCH comprises:

the terminal device determines the one data transmission associated with the PRACH as the latest data transmission on the PUSCH before the time length of T2.
The method of claim 24, wherein the determining, by the terminal device, one data transmission on a PUSCH associated with the PRACH comprises:

and the terminal equipment determines the primary data transmission associated with the PRACH as the transmission of a random access message 3 MSG.3.
The method of claim 1 or 2, wherein the determining, by the terminal device, spatial correlation information for transmitting the PRACH comprises:

and the terminal equipment determines the space related information of the PRACH according to a Physical Downlink Control Channel (PDCCH) command for scheduling the PRACH.
The method of claim 29, wherein the determining, by the terminal device, the spatial correlation information for transmitting the PRACH according to a PDCCH order for scheduling the PRACH comprises:

and the terminal equipment determines the space related information for sending the PRACH according to the Transmission Configuration Indication (TCI) information corresponding to the control resource set for transmitting the PDCCH command.
The method of claim 30, wherein the determining, by the terminal device, the spatial correlation information for sending the PRACH according to the TCI information corresponding to a control resource set for transmitting the PDCCH order comprises:

the terminal device determines spatial correlation information of the PRACH according to a first reference signal, where the first reference signal is a reference signal indicated by the TCI information corresponding to the control resource set.
The method of claim 30, wherein the determining, by the terminal device, the spatial correlation information for sending the PRACH according to the TCI information corresponding to a control resource set for transmitting the PDCCH order comprises:

and the terminal equipment determines the space related information of the PRACH according to the reference signal resource associated with the first reference signal.
The method of any one of claims 1 to 32, further comprising:

the terminal equipment receives fourth indication information sent by the network equipment, wherein the fourth indication information is used for indicating a plurality of candidate space-related information; alternatively, the first and second electrodes may be,

the terminal equipment acquires a plurality of candidate space related information pre-stored in the terminal equipment;

the determining, by the terminal device, spatial correlation information for transmitting a PRACH includes:

and the terminal equipment determines the spatial correlation information of the PRACH in the plurality of candidate spatial correlation information.
The method of claim 33, wherein the fourth indication information is carried in DCI, MAC CE, or RRC signaling.
The method of any one of claims 1 to 34, further comprising:

and the terminal equipment receives a PDCCH command sent by the network equipment, wherein the PDCCH command is used for indicating the terminal equipment to send the PRACH.
A method for transmitting a Physical Random Access Channel (PRACH), the method comprising:

the network equipment determines space related information used for the terminal equipment to send the PRACH;

and the network equipment indicates the space related information of the PRACH to the terminal equipment.
The method of claim 36, wherein the spatial correlation information for the PRACH comprises:

the spatial correlation information corresponding to Sounding Reference Signal (SRS) resources, the spatial correlation information corresponding to Synchronization Signal Blocks (SSBs), or the spatial correlation information corresponding to channel state indication reference signal (CSI-RS).
The method of claim 36 or 37, wherein the network device indicates the spatial correlation information of the PRACH to a terminal device, and wherein the method comprises:

and the network equipment sends first indication information to the terminal equipment, wherein the first indication information is used for indicating the space related information of the PRACH.
The method of claim 38, wherein the first indication information is carried in Downlink Control Information (DCI), a Medium Access Control (MAC) Control Element (CE), or Radio Resource Control (RRC) signaling.
The method according to any one of claims 37 to 39, wherein the first indication information indicates any one of the following information:

identification information of an SRS resource, identification information of a synchronization signal block SSB, or identification information of a channel state indication reference signal CSI-RS.
The method of claim 36 or 37, wherein the network device determining spatial correlation information for the terminal device to transmit the PRACH comprises:

the network equipment determines Physical Uplink Control Channel (PUCCH) resources associated with the PRACH;

the network device determines spatial correlation information used for sending the PRACH, and the spatial correlation information is spatial correlation information corresponding to the PUCCH resource associated with the PRACH.
The method of claim 41, wherein the network device indicating the spatial correlation information of the PRACH to a terminal device comprises:

and the network equipment sends second indication information to the terminal equipment, wherein the second indication information is used for indicating the PUCCH resources associated with the PRACH.
The method of claim 42, wherein the second indication information is carried in DCI, MAC CE, or RRC signaling.
The method of claim 41, wherein the network device determining the PUCCH resource associated with the PRACH comprises:

the network equipment determines the PUCCH resource associated with the PRACH according to the transmission time of the PUCCH.
The method of claim 44, wherein the network device determines the PUCCH resource associated with the PRACH based on a transmission time of a PUCCH, comprising:

the network device determines the PUCCH resource associated with the PRACH as a PUCCH resource of a most recent transmission.
The method of claim 44, wherein the network device determines the PUCCH resource associated with the PRACH based on a transmission time of a PUCCH, comprising:

the network equipment determines the PUCCH resource associated with the PRACH as the PUCCH resource where the PUCCH transmitted last time before the time length of T1 is located.
The method of claim 41, wherein the network device determining a PUCCH resource associated with the PRACH comprises:

and the network equipment determines the PUCCH resource associated with the PRACH according to the resource number of the PUCCH resource.
The method of claim 47, wherein the network device determining the PUCCH resource associated with the PRACH according to a resource number of the PUCCH resource comprises:

the network equipment determines the PRACH associated with the PRACH as a PUCCH resource with the maximum resource number, the minimum resource number or the predetermined value.
The method of claim 41, wherein the network device determining the PUCCH resource associated with the PRACH comprises:

the network equipment determines the PUCCH resource associated with the PRACH according to the format of the PUCCH.
The method of claim 49, wherein the network device determines the PUCCH resource associated with the PRACH according to a PUCCH format, comprising:

the network equipment determines the PUCCH resources associated with the PRACH, and the PUCCH resources corresponding to the PUCCH format with the largest format number, the smallest format number or the predetermined value.
The method of claim 41, wherein the network device determining a PUCCH resource associated with the PRACH comprises:

and the network equipment determines the PUCCH resource associated with the PRACH according to the information content carried in the PUCCH resource.
The method of claim 51, wherein the network device determining the PUCCH resource associated with the PRACH based on information content carried in the PUCCH resource comprises:

the network equipment determines the PUCCH resource associated with the PRACH, and the PUCCH resource carries acknowledgement/negative acknowledgement (ACK/NACK) information or CSI information.
The method of claim 41, wherein the network device determining the PUCCH resource associated with the PRACH comprises:

and the network equipment determines the PUCCH resource associated with the PRACH according to the transmission mode of the Channel State Information (CSI).
The method of claim 53, wherein the network device determining the PUCCH resource associated with the PRACH according to a transmission manner of CSI comprises:

the network device determines the PUCCH resource associated with the PRACH as a PUCCH resource for simultaneously transmitting multiple CSIs or transmitting a single CSI.
The method of any of claims 41 to 54, wherein the PUCCH resource associated with the PRACH is a currently active PUCCH resource or a PUCCH resource that is currently inactive but has been configured by a network device for subsequent PUCCH transmission.
The method of any of claims 41 to 55, wherein the network device determining, from the PUCCH resource associated with the PRACH, spatially-related information for transmitting the PRACH comprises:

when the number of the spatial correlation information corresponding to the PUCCH resource is multiple, the network equipment determines the spatial correlation information used for sending the PRACH, and the spatial correlation information is currently activated or used by the PUCCH resource; alternatively, the first and second electrodes may be,

when the number of the spatial correlation information corresponding to the PUCCH resource is multiple, the network device determines the spatial correlation information used for transmitting the PRACH, and the spatial correlation information is the spatial correlation information with the largest number, the smallest number, or the predetermined value among the multiple spatial correlation information corresponding to the PUCCH resource.
The method of any of claims 41 to 56, wherein the network device determining a PUCCH resource associated with the PRACH comprises:

the network device determines the PUCCH resource associated with the PRACH among a plurality of candidate PUCCH resources.
The method of any one of claims 41 to 57, further comprising:

the network device sends third indication information to the terminal device, where the third indication information is used to indicate the candidate PUCCH resources, and the candidate PUCCH resources are used for the terminal device to determine the PUCCH resource associated with the PRACH.
The method of claim 36 or 37, wherein the network device determining spatial correlation information for the terminal device to transmit the PRACH comprises:

the network equipment determines primary data transmission associated with the PRACH on a Physical Uplink Shared Channel (PUSCH);

the network device determines spatial correlation information for transmitting the PRACH, the spatial correlation information being used for the one-time data transmission associated with the PRACH.
The method of claim 59, wherein the network device determining a transmission on PUSCH associated with the PRACH comprises:

and the network equipment determines the primary data transmission associated with the PRACH according to the transmission time of the data transmission on the PUSCH.
The method of claim 60, wherein the network device determining the one data transmission associated with the PRACH according to a transmission time of the data transmission on the PUSCH comprises:

the network device determines the one data transmission associated with the PRACH as a last data transmission on the PUSCH.
The method of claim 60, wherein the network device determining the one data transmission associated with the PRACH according to a transmission time of the data transmission on the PUSCH comprises:

the network device determines the one data transmission associated with the PRACH as the last data transmission on the PUSCH before the time length of T2.
The method of claim 59, wherein the network device determining a transmission on PUSCH associated with the PRACH comprises:

the network device determines the one-time data transmission associated with the PRACH as the transmission of a random access message 3 MSG.3.
The method of claim 36 or 37, wherein the network device determining spatial correlation information for the terminal device to transmit the PRACH comprises:

and the network equipment determines the space related information of the PRACH according to the PDCCH command for scheduling the PRACH.
The method of claim 64, wherein the determining, by the network device, the spatial correlation information for transmitting the PRACH according to the PDCCH order that schedules the PRACH comprises:

and the network equipment determines the space related information for sending the PRACH according to TCI information corresponding to a control resource set for transmitting the PDCCH command.
The method of claim 65, wherein the determining, by the network device, the spatial correlation information for transmitting the PRACH according to TCI information corresponding to a control resource set for transmitting the PDCCH order comprises:

the network device determines spatial correlation information of the PRACH according to a first reference signal, where the first reference signal is a reference signal indicated by the TCI information corresponding to the control resource set.
The method of claim 65, wherein the determining, by the network device, the spatial correlation information for transmitting the PRACH according to TCI information corresponding to a control resource set for transmitting the PDCCH order comprises:

and the network equipment determines the spatial correlation information of the PRACH according to the reference signal resource associated with the first reference signal.
The method of any one of claims 36 to 67, further comprising:

the network device sends fourth indication information to the terminal device, where the fourth indication information is used to indicate multiple candidate pieces of spatial correlation information, and the multiple candidate pieces of spatial correlation information are used by the terminal device to determine spatial correlation information of the PRACH.
The method of claim 68, wherein the third indication information is carried in DCI, MAC CE, or RRC signaling.
The method of any one of claims 36 to 69, further comprising:

and the network equipment sends a PDCCH order to the terminal equipment, wherein the PDCCH order is used for indicating the terminal equipment to send the PRACH.
A terminal device, characterized in that the terminal device comprises:

a processing unit for determining spatial correlation information for transmitting a PRACH;

a receiving and sending unit, configured to send the PRACH based on the spatial correlation information of the PRACH determined by the determining unit.
A network device, characterized in that the network device comprises:

the processing unit is used for determining space related information used for the terminal equipment to send the PRACH;

a transceiving unit, configured to indicate the spatial correlation information of the PRACH determined by the processing unit to the terminal device.