CN113557770B

CN113557770B - Wireless communication method, terminal equipment and network equipment

Info

Publication number: CN113557770B
Application number: CN201980093973.5A
Authority: CN
Inventors: 徐伟杰; 贺传峰; 王淑坤
Original assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Current assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Priority date: 2019-09-27
Filing date: 2019-09-27
Publication date: 2024-01-23
Anticipated expiration: 2039-09-27
Also published as: WO2021056385A1; CN113557770A

Abstract

A method of wireless communication, a terminal device and a network device, the method comprising: the method comprises the steps that terminal equipment receives a group public physical downlink control channel PDCCH, wherein the group public PDCCH comprises frequency deviation indication information and/or time advance TA indication information; and the terminal equipment determines the target frequency deviation information and/or the target TA information of the terminal equipment according to the group public PDCCH.

Description

Wireless communication method, terminal equipment and network equipment

Technical Field

The embodiment of the application relates to the field of communication, in particular to a wireless communication method, terminal equipment and network equipment.

Background

In a New Radio (NR) system, a terminal device may acquire a Timing Advance (TA) for uplink transmission from a MAC CE, and for a doppler frequency offset, a receiving end may compensate for an estimate of the doppler frequency offset according to a pilot reference signal.

In an NR system, a satellite communication mode is considered to provide a communication service for a user, a satellite is in a state of moving at a high speed in an orbit, and a distance between the satellite and a terminal device changes with time due to the influence of altitude and other factors, so how to notify TA and frequency offset information to ensure correct transmission of an uplink signal is a problem to be solved.

Disclosure of Invention

The embodiment of the application provides a wireless communication method, terminal equipment and network equipment, which can dynamically inform the terminal equipment of TA and/or Doppler frequency offset through a group public PDCCH.

In a first aspect, a method of wireless communication is provided, comprising: the method comprises the steps that terminal equipment receives a group public physical downlink control channel PDCCH, wherein the group public PDCCH comprises frequency deviation indication information and/or time advance TA indication information; and the terminal equipment determines the target frequency deviation information and/or the target TA information of the terminal equipment according to the group public PDCCH.

In a second aspect, there is provided a method of wireless communication, comprising: the network equipment sends a group public Physical Downlink Control Channel (PDCCH) to the terminal equipment, wherein the group public PDCCH comprises frequency deviation indication information and/or Time Advance (TA) indication information, and the group public PDCCH is used for the terminal equipment to determine target frequency deviation information and/or target TA information.

In a third aspect, a terminal device is provided for performing the method of the first aspect or any possible implementation of the first aspect. In particular, the terminal device comprises means for performing the method of the first aspect or any of the possible implementations of the first aspect.

In a fourth aspect, a network device is provided for performing the method of the second aspect or any possible implementation of the second aspect. In particular, the network device comprises means for performing the method of the second aspect or any of the possible implementations of the second aspect.

In a fifth aspect, there is provided a terminal device comprising: including a processor and a memory. The memory is used for storing a computer program, and the processor is used for calling and running the computer program stored in the memory and executing the method in the first aspect or various implementation manners thereof.

In a sixth aspect, there is provided a network device comprising: including a processor and a memory. The memory is for storing a computer program and the processor is for calling and running the computer program stored in the memory for performing the method of the second aspect or implementations thereof described above.

A seventh aspect provides a chip for implementing the method of any one of the first to second aspects or each implementation thereof.

Specifically, the chip includes: a processor for calling and running a computer program from a memory, causing a device on which the chip is mounted to perform the method as in any one of the first to second aspects or implementations thereof described above.

In an eighth aspect, a computer-readable storage medium is provided for storing a computer program that causes a computer to perform the method of any one of the above-described first to second aspects or implementations thereof.

In a ninth aspect, there is provided a computer program product comprising computer program instructions for causing a computer to perform the method of any one of the first to second aspects or implementations thereof.

In a tenth aspect, there is provided a computer program which, when run on a computer, causes the computer to perform the method of any one of the first to second aspects or implementations thereof.

Based on the technical scheme, the network equipment can realize more dynamic notification of TA and/or Doppler frequency offset to the terminal equipment by adopting the Group-common PDCCH, so that the method can adapt to rapid change of the distance and angle between the satellite and the terminal equipment in a satellite communication scene.

Drawings

Fig. 1 is a schematic diagram of an application scenario provided in an embodiment of the present application.

Fig. 2 is a schematic diagram of terminal devices in different locations having different TA or doppler frequency offsets.

Fig. 3 is a schematic diagram of a method of wireless communication provided in an embodiment of the present application.

Fig. 4 is a schematic diagram of a group common PDCCH carrying a TA for each terminal device.

Fig. 5 is a schematic diagram of a group common PDCCH carrying a frequency offset for each terminal device.

Fig. 6 is a schematic diagram of a group common PDCCH carrying a TA and a frequency offset for each terminal device.

Fig. 7 is a schematic diagram of another method of wireless communication provided by an embodiment of the present application.

Fig. 8 is a schematic block diagram of a terminal device provided in an embodiment of the present application.

Fig. 9 is a schematic block diagram of a network device provided in an embodiment of the present application.

Fig. 10 is a schematic block diagram of a communication device provided in another embodiment of the present application.

Fig. 11 is a schematic block diagram of a chip provided in an embodiment of the present application.

Fig. 12 is a schematic block diagram of a communication system provided in an embodiment of the present application.

Detailed Description

The following description of the technical solutions in the embodiments of the present application will be made with reference to the drawings in the embodiments of the present application, and it is apparent that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments, which can be made by one of ordinary skill in the art without undue burden from the present disclosure, are within the scope of the present disclosure.

The technical solution of the embodiment of the application can be applied to various communication systems, for example: global system for mobile communications (Global System of Mobile communication, GSM), code division multiple access (Code Division Multiple Access, CDMA), wideband code division multiple access (Wideband Code Division Multiple Access, WCDMA) systems, general packet radio service (General Packet Radio Service, GPRS), long term evolution (Long Term Evolution, LTE) systems, LTE frequency division duplex (Frequency Division Duplex, FDD) systems, LTE time division duplex (Time Division Duplex, TDD), universal mobile telecommunications system (Universal Mobile Telecommunication System, UMTS), worldwide interoperability for microwave access (Worldwide Interoperability for Microwave Access, wiMAX) communication systems, or 5G systems, and the like.

Exemplary, a communication system 100 to which embodiments of the present application apply is shown in fig. 1. The communication system 100 may include a network device 110, and the network device 110 may be a device that communicates with a terminal device 120 (or referred to as a communication terminal, terminal). Network device 110 may provide communication coverage for a particular geographic area and may communicate with terminal devices located within the coverage area. Alternatively, the network device 110 may be a base station (Base Transceiver Station, BTS) in a GSM system or a CDMA system, a base station (NodeB, NB) in a WCDMA system, an evolved base station (Evolutional Node B, eNB or eNodeB) in an LTE system, or a radio controller in a cloud radio access network (Cloud Radio Access Network, CRAN), or the network device may be a mobile switching center, a relay station, an access point, a vehicle device, a wearable device, a hub, a switch, a bridge, a router, a network-side device in a 5G network, or a network device in a future evolved public land mobile network (Public Land Mobile Network, PLMN), etc.

The communication system 100 further comprises at least one terminal device 120 located within the coverage area of the network device 110. "terminal device" as used herein includes, but is not limited to, a connection via a wireline, such as via a public-switched telephone network (Public Switched Telephone Networks, PSTN), a digital subscriber line (Digital Subscriber Line, DSL), a digital cable, a direct cable connection; and/or another data connection/network; and/or via a wireless interface, e.g., for a cellular network, a wireless local area network (Wireless Local Area Network, WLAN), a digital television network such as a DVB-H network, a satellite network, an AM-FM broadcast transmitter; and/or means of the other terminal device arranged to receive/transmit communication signals; and/or internet of things (Internet of Things, ioT) devices. Terminal devices arranged to communicate over a wireless interface may be referred to as "wireless communication terminals", "wireless terminals" or "mobile terminals". Examples of mobile terminals include, but are not limited to, satellites or cellular telephones; a personal communications system (Personal Communications System, PCS) terminal that may combine a cellular radiotelephone with data processing, facsimile and data communications capabilities; a PDA that can include a radiotelephone, pager, internet/intranet access, web browser, organizer, calendar, and/or a global positioning system (Global Positioning System, GPS) receiver; and conventional laptop and/or palmtop receivers or other electronic devices that include a radiotelephone transceiver. A terminal device 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 (Session Initiation Protocol, SIP) phone, a wireless local loop (Wireless Local Loop, WLL) station, a personal digital assistant (Personal Digital Assistant, PDA), a handheld device with wireless communication capabilities, a computing device or other processing device connected to a wireless modem, an in-vehicle device, a wearable device, a terminal device in a 5G network or a terminal device in a future evolved PLMN, etc.

Alternatively, direct terminal (D2D) communication may be performed between the terminal devices 120.

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

Fig. 1 illustrates one network device and two terminal devices by way of example, and alternatively, the communication system 100 may include a plurality of network devices and may include other numbers of terminal devices within the coverage area of each network device, which is not limited in this embodiment of the present application.

Optionally, the communication system 100 may further include a network controller, a mobility management entity, and other network entities, which are not limited in this embodiment of the present application.

It should be understood that a device having a communication function in a network/system in an embodiment of the present application may be referred to as a communication device. Taking the communication system 100 shown in fig. 1 as an example, the communication device may include a network device 110 and a terminal device 120 with communication functions, where the network device 110 and the terminal device 120 may be specific devices described above, and are not described herein again; the communication device may also include other devices in the communication system 100, such as a network controller, a mobility management entity, and other network entities, which are not limited in this embodiment of the present application.

It should be understood that the terms "system" and "network" are used interchangeably herein. The term "and/or" is herein merely an association relationship describing an associated object, meaning that there may be three relationships, e.g., a and/or B, may represent: a exists alone, A and B exist together, and B exists alone. In addition, the character "/" herein generally indicates that the front and rear associated objects are an "or" relationship.

Non-terrestrial communication network (Non Terrestrial Network, NTN) technology based on 5G NR is currently being studied, where the NTN technology generally provides communication services to terrestrial users by means of satellite communication, and with respect to terrestrial cellular network communication, satellite communication is not limited by the region of the user, and for general terrestrial communication, areas where communication devices cannot be set up or are not covered due to rarity of population, can be covered by satellites, and satellites can orbit around the earth, so that basically every corner on the earth can be covered by satellite communication.

In a satellite communication scenario, a satellite is usually in a high-speed moving state, the speed can reach several kilometers per second, the motion orbit of the satellite may be elliptical, and the distance between the satellite and the terminal may change rapidly with time due to the altitude difference of the positions of different terminal devices, as shown in fig. 2, so a Timing Advance (TA) of the terminal device for uplink transmission also needs to be adjusted in time to accommodate the rapid change of the distance between the satellite and the terminal device.

On the other hand, because the high-speed movement of the satellite has high relative movement speed between the satellite and the terminal, about several kilometers per second, the downlink signal sent by the network equipment or the uplink signal sent by the terminal equipment has larger multiple frequency offset, and the existing frequency offset estimation mode is utilized to perform frequency offset compensation, so that the problem that how to perform TA and frequency offset compensation is needed to be solved is urgent.

Fig. 3 is a schematic flow chart of a method 200 of wireless communication provided in an embodiment of the present application. The method 200 may be performed by a terminal device in the communication system shown in fig. 1, and as shown in fig. 3, the method 200 may include at least part of the following:

s210, terminal equipment receives a group public physical downlink control channel PDCCH, wherein the group public PDCCH comprises frequency deviation indication information and/or time advance TA indication information;

s220, the terminal equipment determines the target frequency deviation information and/or the target TA information of the terminal equipment according to the group public PDCCH.

Therefore, in the embodiment of the application, the network device adopts the Group-common PDCCH to more dynamically notify the TA and Doppler frequency offset to the terminal device, so that the method and the device can adapt to the rapid change of the distance and the angle between the satellite and the terminal device in the satellite communication scene.

It should be understood that, in the embodiments of the present application, the network device may notify the frequency offset indication information and/or the TA indication information through other dynamic signaling, which is not limited in the embodiments of the present application.

In this embodiment of the present application, the TA indication information may be used for the terminal device to determine a timing advance for uplink transmission. The frequency offset indication information may be used to determine a frequency offset (FD) of an uplink signal sent by the terminal device, or a frequency offset of a downlink signal sent by the network device.

In the embodiment of the application, the Group-common physical downlink control channel (Physical Downlink Control Channel, PDCCH) may be sent towards a specific terminal Group. I.e. the frequency offset indication information and/or the time advance TA indication information is applicable to the specific terminal group. The specific terminal group may be a terminal group to which the terminal device belongs.

In some embodiments, the specific terminal group may include:

all terminal devices within a satellite cell;

a group of terminals within a satellite cell;

all terminal devices within one satellite beam;

a group of terminals within a satellite beam.

Alternatively, in embodiments of the present application, one satellite cell may be covered by multiple satellite beams.

In some embodiments, the Group-common PDCCH is scrambled by a dedicated radio network temporary identifier (Radio Network Temporary Identity, RNTI). That is, the dedicated RNTI may be used to scramble a Group-common PDCCH carrying the TA indication information and/or the frequency offset indication information, and the Group-common PDCCH carrying other information is not scrambled using the dedicated RNTI.

The dedicated RNTI may be predefined or may be configured by a network device, e.g. the network device may configure the dedicated RNTI to the terminal device via higher layer signaling.

Alternatively, the higher layer signaling may be radio resource control (Radio Resource Control, RRC) dedicated signaling, a system broadcast message or a medium access control element (Media Access Control Control Element, MAC CE), or may be configured by other signaling, which is not limited by the embodiments of the present application.

In other embodiments, the dedicated RNTI may be an RNTI for the specific terminal Group, that is, a Group-common PDCCH transmitted for the specific terminal Group may be scrambled by the dedicated RNTI, and a Group-common PDCCH transmitted for other terminal groups may be scrambled using other terminal Group-dedicated RNTIs.

In the embodiment of the application, the Group-common PDCCH may be periodically transmitted, that is, the terminal device may periodically receive the Group-common PDCCH, and the network device may quickly notify the terminal device of the TA indication information and/or the frequency offset indication information by periodically transmitting the Group-common PDCCH, which is beneficial to adapting to the quick change of the distance between the satellite and the terminal device in the satellite communication scenario.

In some embodiments, the transmission period of the Group-common PDCCH and the time domain position within the transmission period are predefined or configured by a network device, e.g., may be configured by higher layer signaling. Alternatively, the higher layer signaling may be RRC dedicated signaling, system broadcast messages, or signaling such as MAC CE.

Hereinafter, a specific implementation manner of the TA indication information and/or the frequency offset indication information will be described with reference to specific embodiments.

Embodiment one: the TA indication information comprises common TA information of the group, and the frequency offset indication information comprises common frequency offset information of the group. The group here may be the specific terminal group described previously.

I.e. the network device may inform the terminal device of the common TA information of the Group and/or the common frequency offset information of the Group through the Group-common PDCCH.

Alternatively, the Group common TA information and/or the Group common frequency offset information may be carried in a specific information field in the Group-common PDCCH, for example, the Group common TA information may be carried in a first information field in DCI of the Group-common PDCCH, the Group common frequency offset information may be carried in a second information field in DCI of the Group-common PDCCH, and the terminal device may acquire the Group common TA information from the first information field of the DCI and the Group common frequency offset information from the second information field of the DCI. Alternatively, the first information domain and the second information domain may be the same information domain, or may be different information domains.

In some embodiments, the common TA information for the group may be determined based on a particular terminal location within the coverage area of the network device. For example, the specific terminal location may be a terminal location closest to the network device, such as the location of UE1 shown in fig. 2, and the common TA information of the group may be a TA corresponding to UE 1. For another example, the specific terminal location may be a terminal location farthest from the network device, such as the location of UE2 shown in fig. 2, and the common TA information of the group may be a TA corresponding to UE 2.

In some embodiments, the common frequency offset information for the group may also be determined based on a particular terminal location within the coverage area of the network device. For example, the specific terminal position may be a terminal position with the largest elevation angle relative to the network device, such as the position of UE1 shown in fig. 2, and the common frequency offset information of the group may be a doppler frequency offset corresponding to UE 1. For another example, the specific terminal position may be a terminal position with the smallest elevation angle relative to the network device, such as the position of the UE2 shown in fig. 2, and the common frequency offset information of the group may be a doppler frequency offset corresponding to the UE 2.

In this embodiment one, the terminal device in the Group may determine the common TA information of the Group included in the Group-common PDCCH as the target TA information and/or determine the common frequency offset information of the Group included in the Group-common PDCCH as the target frequency offset information, and further, the terminal device may perform TA adjustment and/or doppler frequency offset pre-compensation based on the common TA information of the Group and/or the common frequency offset information of the Group, so that the remaining TA and/or doppler frequency offset between the terminal device and the network device falls in a smaller interval, which is convenient for the terminal device to perform further processing, and reduces errors caused by TA and doppler frequency offset.

In some embodiments, the network device may also notify the frequency offset indication information and/or the TA indication information through the system information, before the Group-common PDCCH is not received, the terminal device may determine the target doppler frequency offset and/or the target TA information according to the frequency offset indication information and/or the TA indication information in the system information, after the Group-common PDCCH is received, the terminal device may determine the target doppler frequency offset and/or the target TA information according to the frequency offset indication information and/or the TA indication information carried by the Group-common PDCCH.

In other embodiments, if the terminal device receives multiple Group-common PDCCHs, the terminal device may determine the target doppler frequency offset and/or the target TA information according to the recently received Group-common PDCCH, i.e. the previously received Group-common PDCCH is not used any more to determine the target doppler frequency offset and/or the target TA information.

Embodiment two: the TA indication information comprises TA information of each of the plurality of terminal devices, and the frequency offset indication information comprises frequency offset information of each of the plurality of terminal devices.

If the frequency offset information of each terminal device needs K1 bits, the plurality of terminal devices includes M terminal devices (UEs ₁ ～UE _M ) Where K1 is a positive integer, where M is a positive integer, the Group-common PDCCH may include m×k1 bits, which are used to carry frequency offset (denoted FD) information of each of the M terminal devices, as shown in fig. 4.

If the TA information of each terminal device requires K2 bits, the plurality of terminal devices includes M terminal devices (UE ₁ ～UE _M ) Where K2 is a positive integer, where M is a positive integer, the Group-common PDCCH may include m×k2 bits, which is used to carry TA information of each of the M terminal devices, as shown in fig. 5.

In the second embodiment, the frequency offset information of each terminal device and the TA information of each terminal device may be carried in the same Group-common PDCCH, or may also be carried in different Group-common PDCCHs. If the frequency offset information of each terminal device and the TA information of each terminal device are carried in the same Group-common PDCCH, the frequency offset information of each terminal device and the TA information of each terminal device may be carried in different information domains of the Group-common PDCCH, or may also be carried in the same information domain of the Group-common PDCCH, as shown in fig. 6.

In some embodiments of the present application, the network device may notify the location information of the TA information and/or the frequency offset information of each of the plurality of terminal devices in the downlink control information (Downlink Control Information, DCI) of the Group-common PDCCH, so that each of the plurality of terminal devices may obtain the TA information and/or the frequency offset information of each of the plurality of terminal devices according to the location information. Optionally, the network device may further notify the total length of DCI carrying the TA information and/or the frequency offset information of the plurality of terminal devices, where the total length is used for the terminal device to demodulate the Group-common PDCCH to obtain the TA information and/or the frequency offset information of each terminal device.

Alternatively, the network device may notify the TA information and/or the location information of the frequency offset information in the DCI of the Group-common PDCCH of each of the plurality of terminal devices through higher layer signaling. By way of example and not limitation, the higher layer signaling may be RRC dedicated signaling, system broadcast messages or MAC CEs.

As an example, the location information of the TA information and/or the frequency offset information of each terminal device in the DCI of the Group-common PDCCH may include a location number of the TA information and/or the frequency offset information of each terminal device in the DCI. The position number may be used to indicate a starting position and a length.

Alternatively, in some embodiments, the time units of the TAs indicated by the TA indication information may be predefined or configured by the network device, for example, by higher layer signaling. Alternatively, the higher layer signaling may be RRC dedicated signaling, system broadcast messages, MAC CEs, or the like. For example, the time units may be one or more nanoseconds (ns), or one or more sampling points, or may be other time units, which are not limited by the embodiments of the present application.

As an example, if the TA indicated by the TA indication information has a ta_offset value, the terminal device may multiply the ta_offset by the time unit to obtain the target TA information. For example, if the TA value is 5 and the time unit is 5ns, the terminal device may determine that the target TA information is 25ns.

Alternatively, in some embodiments, the frequency unit of the frequency offset indicated by the frequency offset indication information may be predefined or configured by the network device, for example, by higher layer signaling. Alternatively, the higher layer signaling may be RRC dedicated signaling, system broadcast messages, MAC CEs, or the like.

For example, the frequency offset unit may be one or more Hz, or may be other frequency offset units, which are not limited in this embodiment of the present application.

As an example, if the frequency offset indicated by the frequency offset indication information is fd_offset, the terminal device may multiply the fd_offset by the frequency offset unit to obtain the target frequency offset information. For example, if the FD value is 5 and the frequency offset unit is 5Hz, the terminal device may determine that the target FD information is 25Hz.

As an embodiment, the terminal device of the Group may determine target TA information and/or target doppler frequency offset according to TA information and/or frequency offset information of each terminal device included in the Group-common PDCCH, for example, the terminal device in the Group may determine TA information of the terminal device included in the Group-common PDCCH as the target TA information, and/or determine frequency offset information of the terminal device included in the Group-common PDCCH as the target frequency offset information, that is, TA information and/or frequency offset information of each terminal device included in the Group-common PDCCH is final TA and/or frequency offset of each terminal device.

As another embodiment, the TA information of each terminal device included in the Group-common PDCCH is a TA adjustment amount with respect to the common TA information of the Group, and the frequency offset information of each terminal device included in the Group-common PDCCH is a frequency offset adjustment amount with respect to the common frequency offset information of the Group. In this case, the terminal device may determine the sum of the TA information of the terminal device and the common frequency offset information of the Group included in the Group-common PDCCH as the target TA information, and/or determine the frequency offset information of the terminal device and the common frequency offset information of the Group included in the Group-common PDCCH as the target frequency offset information. Here, the common TA information of the Group may be acquired from system information or from a Group-common PDCCH.

If the system information carries the common TA information ta_offset of the Group, and the Group-common PDCCH received by the terminal device carries TA adjustment amounts of a plurality of terminal devices, where the TA adjustment amount of the terminal device is delta_ta_offset_ue1, the terminal device may determine a sum of the common TA information and the TA adjustment amount delta_ta_offset_ue1 of the terminal device, that is, (ta_offset+delta_ta_offset_ue1) as target TA information of the terminal device.

Therefore, the network device adopts the Group-common PDCCH to carry TA information and/or frequency offset information of a plurality of terminal devices, so that the bearing efficiency of the TA indication information and/or the frequency offset indication information can be improved, and the average resource overhead of each terminal device is reduced. And, the periodically transmitted Group-common PDCCH is adopted to carry the TA information and/or the frequency offset information of the plurality of terminal devices, so that the TA information and/or the frequency offset information of the plurality of terminal devices can be continuously and periodically transmitted to the terminal devices, and the terminal devices can timely perform TA adjustment and/or doppler frequency offset adjustment, which is beneficial to the transmission of periodic uplink signals, wherein the periodic uplink signals can be periodic sounding reference signals (Sounding Reference Signal, SRS), channel state information (Channel State Information, CSI) feedback and the like.

On the other hand, the network device configures the TA adjustment amount of the TA of each terminal device relative to the public TA information of the Group and/or the frequency offset adjustment amount of the frequency offset of each terminal device relative to the public frequency offset information of the Group through the Group-common PDCCH, so that the TA adjustment and the Doppler frequency offset adjustment of the UE level can be realized.

Embodiment III: the frequency offset indication information comprises a frequency offset adjustment amount, and the frequency offset adjustment amount can be an adjustment amount of common frequency offset information relative to the group; the TA indication information includes a TA adjustment amount, which may be an adjustment amount with respect to common TA information of the group.

Here, the common TA information of the Group may be acquired from system information or may be acquired from a Group-common PDCCH; the common frequency offset information of the Group may be obtained from system information or may also be obtained from the Group-common PDCCH.

As an embodiment, the terminal device determines the target TA information according to the common TA information of the group and the TA adjustment amount; and/or determining the target frequency offset information according to the public frequency offset information of the group and the frequency offset adjustment quantity. For example, the terminal device may determine a sum of the common TA information of the group and the TA adjustment amount as the target TA information; and/or determining the sum of the common frequency offset information and the frequency offset adjustment amount of the group as the target frequency offset information.

Assuming that the system information carries the common TA information ta_offset of the Group and the common frequency offset information fd_offset of the Group and the Group-common PDCCH carries the TA adjustment amount delta_ta_offset and the frequency offset adjustment amount delta_fd_offset, the terminal device may determine the sum of the common TA information of the Group and the TA adjustment amount, i.e. ta_offset+delta_ta_offset, as target TA information, and determine the sum of the common frequency offset information of the Group and the frequency offset adjustment amount, i.e. fd_offset+delta_fd_offset, as target frequency offset information.

As another embodiment, the terminal device may determine the target TA information according to the common TA information of the Group, the TA adjustment amount and a dedicated TA adjustment amount (delta_ta_offset_ue) of the terminal device, wherein the dedicated TA adjustment amount of the terminal device may be obtained from the Group-common PDCCH. For example, the terminal device may determine the sum of the common TA information of the group, the TA adjustment amount and the dedicated TA adjustment amount delta_ta_offset_ue of the terminal device, i.e. (ta_offset+delta_ta_offset+delta_ta_offset_ue) as target TA information.

Similarly, the terminal device may determine the target frequency offset information based on the common frequency offset information of the Group, the frequency offset adjustment amount, and a dedicated frequency offset adjustment amount (delta_fd_offset_ue) of the terminal device, where the dedicated frequency offset adjustment amount of the terminal device may be obtained from the Group-common PDCCH. For example, the terminal device may determine the common frequency offset information of the group, the sum of the frequency offset adjustment amount and the dedicated frequency offset adjustment amount delta_fd_offset_ue of the terminal device, i.e., fd_offset+delta_fd_offset+delta_fd_offset_ue, as the target frequency offset information.

As still another embodiment, the terminal device may determine the target TA information according to a TA adjustment amount in the Group-common PDCCH that is received recently and a historical accumulated TA adjustment amount of the terminal device. The historical accumulated TA adjustment amount of the terminal device may be an accumulated value of TA adjustment amounts in a Group-common PDCCH received before the terminal device.

Similarly, the terminal device may determine the target frequency offset information by using the frequency offset adjustment amount in the Group-common PDCCH received recently and the historical accumulated frequency offset adjustment amount of the terminal device. The historical accumulated frequency offset adjustment amount of the terminal equipment can be an accumulated value of frequency offset adjustment amounts in a Group-common PDCCH received before the terminal equipment.

For example, when the nth time of the terminal device receives the Group-common PDCCH, the historical accumulated TA adjustment amount of the terminal device is ta_n, and the (n+1) time of the terminal device receives the Group-common PDCCH, if the TA adjustment amount ta_new of the terminal device carried in the Group-common PDCCH is at this time, the terminal device may determine that the target TA information is ta_n+ta_new, where the historical accumulated TA adjustment amount ta_n+1=ta_n+ta_new of the terminal device.

It should be noted that, in this embodiment of the present application, the historical accumulated TA adjustment amount and the historical accumulated frequency offset adjustment amount may be terminal equipment granularity, or may also be terminal Group granularity, that is, the terminal equipment may determine the target TA information according to the TA adjustment amount for the terminal Group in the Group-common PDCCH in combination with the historical accumulated TA adjustment amount of the terminal Group, and similarly, the terminal equipment may determine the target frequency offset information according to the frequency offset adjustment amount for the terminal Group in the Group-common PDCCH in combination with the historical accumulated frequency offset adjustment amount of the terminal Group.

In some embodiments, if the implementing terminal device receives other signaling of the network device, the other signaling also carries a frequency offset adjustment amount and/or a TA adjustment amount of the terminal device, and the terminal device may also respectively count the frequency offset adjustment amount and the TA adjustment amount in the other signaling into the historical accumulated frequency offset adjustment amount and the historical accumulated TA adjustment amount, so as to determine the target frequency offset information and the target TA information.

Therefore, in the embodiment of the application, the network device may notify the terminal device of the TA information and/or the frequency offset information by combining the system information with the Group-common PDCCH, so that the terminal device may obtain the ta_offset and/or the fd_offset of the terminal Group immediately after reading the system information, and further the network device may further notify the terminal device of the TA adjustment delta_ta_offset and/or the frequency offset adjustment delta_fd_offset more dynamically by combining the Group-common PDCCH, which is beneficial to adapting to rapid change of the distance between the satellite and the terminal device in the satellite communication scenario. Further, the network device may also notify the terminal device of the dedicated TA adjustment amount and/or the frequency offset adjustment amount, so as to implement more accurate UE-level TA adjustment and/or doppler frequency offset adjustment.

The method of wireless communication according to an embodiment of the present application is described above in detail from the perspective of the terminal device in conjunction with fig. 3 to 6, and the method of wireless communication according to another embodiment of the present application is described below in detail from the perspective of the network device in conjunction with fig. 7. It should be understood that the description on the network device side corresponds to the description on the terminal device side, and similar descriptions may be referred to above, and are not repeated here for avoiding repetition.

Fig. 7 is a schematic flow chart of a method 300 of wireless communication according to another embodiment of the present application, the method 300 being executable by a network device in the communication system shown in fig. 1, as shown in fig. 7, the method 300 comprising:

s310, the network device sends a group public physical downlink control channel PDCCH to the terminal device, wherein the group public PDCCH comprises frequency offset indication information and/or time advance TA indication information, and the group public PDCCH is used for determining target frequency offset information and/or target TA information by the terminal device.

Optionally, in some embodiments, the frequency offset indication information includes at least one of:

common frequency offset information for the group;

frequency offset information of each of the plurality of terminal devices;

A frequency offset adjustment amount, which is an adjustment amount with respect to the first common frequency offset information of the group;

the TA indication information includes at least one of:

common TA information for the group;

TA information of each of the plurality of terminal devices;

a TA adjustment amount, which is an adjustment amount with respect to the first common TA information of the group.

Optionally, in some embodiments, the first common frequency offset information of the group is obtained from the group common PDCCH, or is obtained from system information;

the first common TA information of the group is acquired from the group common PDCCH or from system information.

Optionally, in some embodiments, the common frequency offset information for the group is determined based on a first reference terminal location within a coverage area of the network device;

the common TA information for the group is determined based on a second reference terminal location within the coverage area of the network device.

Optionally, in some embodiments, the first reference terminal location is a terminal location closest to the network device; the second reference terminal position is a terminal position with the largest elevation angle relative to the network device.

Optionally, in some embodiments, the method 300 further comprises:

The network device sends first configuration information to the terminal device, where the first configuration information is used to configure the frequency offset information of each terminal device and/or the position of TA information of each terminal device in downlink control information DCI carried by the group public PDCCH.

Optionally, in some embodiments, the network device sends first configuration information to the terminal device, including:

the network device sends a higher layer signaling to the terminal device, wherein the higher layer signaling comprises the first configuration information.

Optionally, in some embodiments, the higher layer signaling is radio resource control RRC signaling, a system broadcast message or a media access control MAC control element CE.

Optionally, in some embodiments, the first configuration information includes frequency offset information of each terminal device and/or a position number of TA information of each terminal device in the DCI.

Optionally, the group public PDCCH is scrambled by a private radio network temporary identifier RNTI.

Optionally, the dedicated RNTI is predefined or configured by the network device.

Optionally, in some embodiments, the dedicated RNTI is an RNTI for a particular terminal group.

Optionally, in some embodiments, the 310 may include:

the network device periodically transmits the group public PDCCH to the terminal device.

Optionally, in some embodiments, the transmission period and/or the time domain position within the transmission period of the group common PDCCH is predefined or configured by a network device.

Optionally, in some embodiments, a frequency unit corresponding to the frequency offset indication information and/or a time unit corresponding to the TA indication information is predefined, or configured by the network device.

The method embodiments of the present application are described in detail above in connection with fig. 3 to 7, and the apparatus embodiments of the present application are described in detail below in connection with fig. 8 to 12, it being understood that the apparatus embodiments and the method embodiments correspond to each other, and similar descriptions may refer to the method embodiments.

Fig. 8 shows a schematic block diagram of a terminal device 400 according to an embodiment of the present application. As shown in fig. 8, the terminal apparatus 400 includes:

a communication module 410, configured to receive a group common physical downlink control channel PDCCH, where the group common PDCCH includes frequency offset indication information and/or time advance TA indication information;

and the determining module 420 is configured to determine, according to the set of public PDCCHs, target frequency offset information and/or target TA information of the terminal device.

common frequency offset information for the group;

frequency offset information of each of the plurality of terminal devices;

the TA indication information includes at least one of:

common TA information for the group;

TA information of each of the plurality of terminal devices;

Optionally, the first common frequency offset information of the group is obtained from the group common PDCCH, or is obtained from system information; the first common TA information of the group is acquired from the group common PDCCH or from system information.

Optionally, the common frequency offset information of the group is determined based on a first reference terminal location within the coverage area of the network device; the common TA information for the group is determined based on a second reference terminal location within the coverage area of the network device.

Optionally, the first reference terminal position is a terminal position nearest to the network device; the second reference terminal position is a terminal position with the largest elevation angle relative to the network device.

Optionally, in some embodiments, the determining module 420 is specifically configured to:

determining the public frequency offset information of the group as the target frequency offset information of the terminal equipment; and/or

And determining the public TA information of the group as target TA information of the terminal equipment.

determining the frequency offset information of the terminal equipment in the frequency offset information of the plurality of terminal equipment as the target frequency offset information of the terminal equipment; and/or

And determining the TA information of the terminal equipment in the TA information of the plurality of terminal equipment as target TA information of the terminal equipment.

determining the sum of the first common frequency offset information and the frequency offset adjustment quantity of the group as the target frequency offset information of the terminal equipment; and/or

And determining the sum of the first public TA information and the TA adjustment amount of the group as target TA information of the terminal equipment.

determining the sum of the frequency offset adjustment quantity and the historical accumulated frequency offset information of the terminal equipment as target frequency offset information of the terminal equipment; and/or

And determining the sum of the TA adjustment amount and the historical accumulated TA adjustment information of the terminal equipment as target TA information of the terminal equipment.

Optionally, in some embodiments, the communication module 410 is further configured to:

and receiving first configuration information sent by network equipment, wherein the first configuration information is used for configuring the frequency offset information of each terminal equipment and/or the position of TA information of each terminal equipment in Downlink Control Information (DCI) carried by the group public PDCCH.

Optionally, in some embodiments, the communication module is specifically configured to: and receiving a high-layer signaling sent by the network equipment, wherein the high-layer signaling comprises the first configuration information.

Optionally, the communication module is specifically configured to: the group common PDCCH is periodically received.

Alternatively, in some embodiments, the communication module may be a communication interface or transceiver, or an input/output interface of a communication chip or a system on a chip. The determination module may be one or more processors.

It should be understood that the terminal device 400 according to the embodiment of the present application may correspond to the terminal device in the embodiment of the method of the present application, and the foregoing and other operations and/or functions of each unit in the terminal device 400 are respectively for implementing the corresponding flow of the terminal device in the method 200 shown in fig. 3, and are not further described herein for brevity.

Fig. 9 is a schematic block diagram of a network device according to an embodiment of the present application. The network device 500 of fig. 9 includes:

A communication module 510, configured to send a group common physical downlink control channel PDCCH to a terminal device, where the group common PDCCH includes frequency offset indication information and/or time advance TA indication information, and the group common PDCCH is used for determining target frequency offset information and/or target TA information by the terminal device.

common frequency offset information for the group;

frequency offset information of each of the plurality of terminal devices;

the TA indication information includes at least one of:

common TA information for the group;

TA information of each of the plurality of terminal devices;

Optionally, in some embodiments, the communication module 510 is further configured to:

and sending first configuration information to the terminal equipment, wherein the first configuration information is used for configuring the position of the frequency offset information of each terminal equipment and/or the TA information of each terminal equipment in Downlink Control Information (DCI) carried by the group public PDCCH.

Optionally, in some embodiments, the communication module 510 is specifically configured to:

and sending a high-layer signaling to the terminal equipment, wherein the high-layer signaling comprises the first configuration information.

and periodically sending the group public PDCCH to the terminal equipment.

Alternatively, in some embodiments, the communication module 510 may be a communication interface or transceiver, or an input/output interface of a communication chip or a system on a chip.

It should be understood that the network device 500 according to the embodiment of the present application may correspond to a terminal device in the embodiment of the method of the present application, and the foregoing and other operations and/or functions of each unit in the network device 500 are respectively for implementing the corresponding flow of the network device in the method 300 shown in fig. 7, which is not described herein for brevity.

Fig. 10 is a schematic structural diagram of a communication device 600 provided in an embodiment of the present application. The communication device 600 shown in fig. 10 comprises a processor 610, from which the processor 610 may call and run a computer program to implement the method in the embodiments of the present application.

Optionally, as shown in fig. 10, the communication device 600 may further comprise a memory 620. Wherein the processor 610 may call and run a computer program from the memory 620 to implement the methods in embodiments of the present application.

The memory 620 may be a separate device from the processor 610 or may be integrated into the processor 610.

Optionally, as shown in fig. 10, the communication device 600 may further include a transceiver 630, and the processor 610 may control the transceiver 630 to communicate with other devices, and in particular, may send information or data to other devices, or receive information or data sent by other devices.

The transceiver 630 may include a transmitter and a receiver, among others. Transceiver 630 may further include antennas, the number of which may be one or more.

Optionally, the communication device 600 may be specifically a network device in the embodiment of the present application, and the communication device 600 may implement a corresponding flow implemented by the network device in each method in the embodiment of the present application, which is not described herein for brevity.

Optionally, the communication device 600 may be specifically a mobile terminal/terminal device in the embodiment of the present application, and the communication device 600 may implement corresponding processes implemented by the mobile terminal/terminal device in each method in the embodiment of the present application, which are not described herein for brevity.

Fig. 11 is a schematic structural diagram of a chip of an embodiment of the present application. The chip 700 shown in fig. 11 includes a processor 710, and the processor 710 may call and run a computer program from a memory to implement the methods in the embodiments of the present application.

Optionally, as shown in fig. 11, chip 700 may also include memory 720. Wherein the processor 710 may call and run a computer program from the memory 720 to implement the methods in embodiments of the present application.

Wherein the memory 720 may be a separate device from the processor 710 or may be integrated into the processor 710.

Optionally, the chip 700 may also include an input interface 730. The processor 710 may control the input interface 730 to communicate with other devices or chips, and in particular, may obtain information or data sent by other devices or chips.

Optionally, the chip 700 may further include an output interface 740. The processor 710 may control the output interface 740 to communicate with other devices or chips, and in particular, may output information or data to other devices or chips.

Optionally, the chip may be applied to a network device in the embodiment of the present application, and the chip may implement a corresponding flow implemented by the network device in each method in the embodiment of the present application, which is not described herein for brevity.

Optionally, the chip may be applied to a mobile terminal/terminal device in the embodiment of the present application, and the chip may implement a corresponding flow implemented by the mobile terminal/terminal device in each method in the embodiment of the present application, which is not described herein for brevity.

It should be understood that the chips referred to in the embodiments of the present application may also be referred to as system-on-chip chips, or the like.

Fig. 12 is a schematic block diagram of a communication system 900 provided in an embodiment of the present application. As shown in fig. 12, the communication system 900 includes a terminal device 910 and a network device 920.

The terminal device 910 may be configured to implement the corresponding functions implemented by the terminal device in the above method, and the network device 920 may be configured to implement the corresponding functions implemented by the network device in the above method, which are not described herein for brevity.

It should be appreciated that the processor of an embodiment 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 implemented by integrated logic circuits of hardware in a processor or instructions in software form. The processor may be a general purpose processor, a digital signal processor (Digital Signal Processor, DSP), an application specific integrated circuit (Application Specific Integrated Circuit, ASIC), an off-the-shelf programmable gate array (Field Programmable Gate Array, FPGA) or other programmable logic device, discrete gate or transistor logic device, discrete hardware components. The disclosed methods, steps, and logic blocks 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 a method disclosed in connection with the embodiments of the present application may be embodied directly in hardware, in a decoded processor, or in a combination of hardware and software modules in a decoded processor. The software modules may be located in a random access memory, flash memory, read only memory, programmable read only memory, or electrically erasable programmable memory, registers, etc. as well known in the art. The storage medium is located in a memory, and the processor reads the information in the memory and, in combination with its hardware, performs the steps of the above method.

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

It should be understood that the above memory is exemplary but not limiting, and for example, the memory in the embodiments of the present application may be Static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double data rate SDRAM (DDR SDRAM), enhanced SDRAM (ESDRAM), synchronous Link DRAM (SLDRAM), direct RAM (DR RAM), and the like. That is, the memory in embodiments of the present application is intended to comprise, without being limited to, these and any other suitable types of memory.

Embodiments of the present application also provide a computer-readable storage medium for storing a computer program.

Optionally, the computer readable storage medium may be applied to a network device in the embodiments of the present application, and the computer program causes a computer to execute a corresponding flow implemented by the network device in each method in the embodiments of the present application, which is not described herein for brevity.

Optionally, the computer readable storage medium may be applied to a mobile terminal/terminal device in the embodiments of the present application, and the computer program causes a computer to execute a corresponding procedure implemented by the mobile terminal/terminal device in each method of the embodiments of the present application, which is not described herein for brevity.

Embodiments of the present application also provide a computer program product comprising computer program instructions.

Optionally, the computer program product may be applied to a network device in the embodiments of the present application, and the computer program instructions cause the computer to execute corresponding flows implemented by the network device in the methods in the embodiments of the present application, which are not described herein for brevity.

Optionally, the computer program product may be applied to a mobile terminal/terminal device in the embodiments of the present application, and the computer program instructions cause a computer to execute corresponding processes implemented by the mobile terminal/terminal device in the methods in the embodiments of the present application, which are not described herein for brevity.

The embodiment of the application also provides a computer program.

Optionally, the computer program may be applied to a network device in the embodiments of the present application, and when the computer program runs on a computer, the computer is caused to execute a corresponding flow implemented by the network device in each method in the embodiments of the present application, which is not described herein for brevity.

Optionally, the computer program may be applied to a mobile terminal/terminal device in the embodiments of the present application, where the computer program when run on a computer causes the computer to execute corresponding processes implemented by the mobile terminal/terminal device in the methods in the embodiments of the present application, and for brevity, will not be described herein.

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 solution. 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 will be clear to those skilled in the art that, for convenience and brevity of description, specific working procedures of the above-described systems, apparatuses and units may refer to corresponding procedures in the foregoing method embodiments, and are not repeated herein.

In the several embodiments provided in this application, it should be understood that the disclosed systems, devices, and methods may be implemented in other manners. For example, the apparatus embodiments described above are merely illustrative, e.g., the division of the units is merely a logical function division, and there may be additional divisions when actually implemented, e.g., multiple units or components may be combined or integrated into another system, or some features may be omitted or not performed. Alternatively, the coupling or direct coupling or communication connection shown or discussed with each other may be an indirect coupling or communication connection via some interfaces, devices or units, which may be in electrical, mechanical or other form.

The units described as separate units may or may not be physically separate, and units shown 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 may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

In addition, each functional unit in each embodiment of the present application may be integrated in one processing unit, or each unit may exist alone physically, or two or more units may be integrated in 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 may be embodied essentially or in a part contributing to the prior art or in a part of the technical solution, in the form of a software product stored in a storage medium, including several instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the methods described in the embodiments of the present application. And the aforementioned storage medium includes: a usb disk, a removable hard disk, a Read-Only Memory (ROM), a random access Memory (Random Access Memory, RAM), a magnetic disk, or an optical disk, or other various media capable of storing program codes.

The foregoing is merely 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 think about changes or substitutions within the technical scope of the present application, and the changes and substitutions are intended to 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

1. A method of wireless communication, comprising:

the method comprises the steps that terminal equipment receives a group public physical downlink control channel PDCCH, wherein the group public PDCCH comprises frequency deviation indication information and/or time advance TA indication information;

the terminal equipment determines target frequency deviation information and/or target TA information of the terminal equipment according to the group public PDCCH;

wherein the frequency offset indication information includes at least one of:

common frequency offset information for the group;

frequency offset information of each of the plurality of terminal devices;

the TA indication information includes at least one of:

common TA information for the group;

TA information of each of the plurality of terminal devices;

2. The method of claim 1, wherein the first common frequency offset information for the group is obtained from the group common PDCCH or from system information;

3. The method of claim 1, wherein the set of common frequency offset information is determined based on a first reference terminal location within a coverage area of the network device;

4. A method according to claim 3, wherein the first reference terminal location is a terminal location closest to the network device;

the second reference terminal position is a terminal position with the largest elevation angle relative to the network device.

5. The method according to any of claims 1 to 4, wherein the determining, by the terminal device, the target frequency offset information and/or the target TA message of the terminal device according to the group public PDCCH comprises:

the terminal equipment determines the public frequency offset information of the group as the target frequency offset information of the terminal equipment; and/or

6. The method according to any of claims 1 to 4, wherein the determining, by the terminal device, the target frequency offset information and/or the target TA message of the terminal device according to the group public PDCCH comprises:

the terminal equipment determines the frequency offset information of the terminal equipment in the frequency offset information of the plurality of terminal equipment as the target frequency offset information of the terminal equipment; and/or

And determining the TA information of the terminal equipment in the TA information of the plurality of terminal equipment as the target TA information of the terminal equipment.

7. The method according to any of claims 1 to 4, wherein the determining, by the terminal device, the target frequency offset information and/or the target TA message of the terminal device according to the group public PDCCH comprises:

the terminal equipment determines the sum of the first public frequency offset information of the group and the frequency offset adjustment quantity as the target frequency offset information of the terminal equipment; and/or

And determining the sum of the first public TA information of the group and the TA adjustment amount as the target TA information of the terminal equipment.

8. The method according to any of claims 1 to 4, wherein the determining, by the terminal device, the target frequency offset information and/or the target TA message of the terminal device according to the group public PDCCH comprises:

the terminal equipment determines the sum of the frequency offset adjustment quantity and the historical accumulated frequency offset information of the terminal equipment as target frequency offset information of the terminal equipment; and/or

And the terminal equipment determines the sum of the TA adjustment amount and the historical accumulated TA adjustment information of the terminal equipment as target TA information of the terminal equipment.

9. The method according to any one of claims 1 to 4, further comprising:

the terminal equipment receives first configuration information sent by the network equipment, wherein the first configuration information is used for configuring the frequency offset information of each terminal equipment and/or the position of the TA information of each terminal equipment in Downlink Control Information (DCI) carried by the group public PDCCH.

10. The method of claim 9, wherein the terminal device receives the first configuration information sent by the network device, comprising:

the terminal equipment receives a high-layer signaling sent by the network equipment, wherein the high-layer signaling comprises the first configuration information.

11. The method according to claim 10, wherein the higher layer signaling is radio resource control, RRC, signaling, system broadcast messages or media access control, MAC, control elements, CEs.

12. The method according to claim 9, wherein the first configuration information includes frequency offset information of each terminal device and/or a position number of TA information of each terminal device in the DCI.

13. The method according to any of claims 1 to 4, characterized in that the group public PDCCH is scrambled by a dedicated radio network temporary identifier, RNTI.

14. The method of claim 13, wherein the dedicated RNTI is predefined or configured by a network device.

15. The method of claim 13, wherein the dedicated RNTI is an RNTI for a particular terminal group.

16. The method according to any of claims 1 to 4, wherein the terminal device receives a group common physical downlink control channel, PDCCH, comprising:

the terminal device periodically receives the group common PDCCH.

17. The method of claim 16, wherein a transmission period and/or a time domain position within the transmission period of the set of common PDCCHs is predefined or configured by a network device.

18. The method according to any of claims 1 to 4, wherein the frequency units corresponding to the frequency offset indication information and/or the time units corresponding to the TA indication information are predefined or configured by a network device.

19. A method of wireless communication, comprising:

the network equipment sends a group public Physical Downlink Control Channel (PDCCH) to the terminal equipment, wherein the group public PDCCH comprises frequency deviation indication information and/or Time Advance (TA) indication information, and the group public PDCCH is used for the terminal equipment to determine target frequency deviation information and/or target TA information;

wherein the frequency offset indication information includes at least one of:

common frequency offset information for the group;

frequency offset information of each of the plurality of terminal devices;

the TA indication information includes at least one of:

common TA information for the group;

TA information of each of the plurality of terminal devices;

20. The method of claim 19, wherein the first common frequency offset information for the group is obtained from the group common PDCCH or from system information;

21. The method of claim 19, wherein the set of common frequency offset information is determined based on a first reference terminal location within a coverage area of the network device;

22. The method of claim 21, wherein the first reference terminal location is a terminal location nearest to the network device;

23. The method according to any one of claims 19 to 22, further comprising:

24. The method of claim 23, wherein the network device sending the first configuration information to the terminal device comprises:

25. The method of claim 24, wherein the higher layer signaling is radio resource control, RRC, signaling, system broadcast messages, or media access control, MAC, control element, CE.

26. The method of claim 23, wherein the first configuration information includes frequency offset information of each terminal device and/or a position number of TA information of each terminal device in the DCI.

27. The method according to any of claims 19 to 22, wherein the group public PDCCH is scrambled by a dedicated radio network temporary identifier, RNTI.

28. The method of claim 27, wherein the dedicated RNTI is predefined or configured by a network device.

29. The method of claim 27, wherein the dedicated RNTI is an RNTI for a particular terminal group.

30. The method according to any of claims 19 to 22, wherein the network device sends a group common physical downlink control channel, PDCCH, to a terminal device, comprising:

31. The method of claim 30, wherein a transmission period and/or a time domain position within the transmission period of the set of common PDCCHs is predefined or configured by a network device.

32. The method according to any of claims 19 to 22, wherein the frequency units corresponding to the frequency offset indication information and/or the time units corresponding to the TA indication information are predefined or configured by a network device.

33. A terminal device, comprising:

the communication module is used for receiving a group public Physical Downlink Control Channel (PDCCH), wherein the group public PDCCH comprises frequency deviation indication information and/or Time Advance (TA) indication information;

the determining module is used for determining target frequency deviation information and/or target TA information of the terminal equipment according to the group public PDCCH;

wherein the frequency offset indication information includes at least one of:

common frequency offset information for the group;

frequency offset information of each of the plurality of terminal devices;

The TA indication information includes at least one of:

common TA information for the group;

TA information of each of the plurality of terminal devices;

34. The terminal device of claim 33, wherein the first common frequency offset information of the group is obtained from the group common PDCCH or from system information;

35. The terminal device of claim 33, wherein the set of common frequency offset information is determined based on a first reference terminal location within a coverage area of the network device;

36. The terminal device of claim 35, wherein the first reference terminal location is a terminal location nearest to the network device;

37. The terminal device according to any of the claims 33 to 36, wherein the determining module is specifically configured to:

38. The terminal device according to any of the claims 33 to 36, wherein the determining module is specifically configured to: determining the frequency offset information of the terminal equipment in the frequency offset information of the plurality of terminal equipment as the target frequency offset information of the terminal equipment; and/or

39. The terminal device according to any of the claims 33 to 36, wherein the determining module is specifically configured to:

40. The terminal device according to any of the claims 33 to 36, wherein the determining module is specifically configured to:

Determining the sum of the frequency offset adjustment quantity and the historical accumulated frequency offset information of the terminal equipment as the target frequency offset information of the terminal equipment; and/or

And determining the sum of the TA adjustment amount and the historical accumulated TA adjustment information of the terminal equipment as the target TA information of the terminal equipment.

41. The terminal device according to any of the claims 33 to 36, wherein the communication module is further adapted to:

42. The terminal device of claim 41, wherein the communication module is specifically configured to: and receiving a high-layer signaling sent by the network equipment, wherein the high-layer signaling comprises the first configuration information.

43. The terminal device of claim 42, wherein the higher layer signaling is radio resource control RRC signaling, system broadcast messages or media access control MAC control element CE.

44. The terminal device of claim 41, wherein the first configuration information includes frequency offset information of each terminal device and/or a position number of TA information of each terminal device in the DCI.

45. The terminal device according to any of the claims 33 to 36, characterized in that the group public PDCCH is scrambled by a dedicated radio network temporary identifier, RNTI.

46. The terminal device of claim 45, wherein the dedicated RNTI is predefined or configured by a network device.

47. The terminal device of claim 45, wherein the dedicated RNTI is an RNTI for a particular terminal group.

48. The terminal device according to any of the claims 33 to 36, characterized in that the communication module is specifically configured to: the group common PDCCH is periodically received.

49. The terminal device of claim 48, wherein a transmission period and/or a time domain position within the transmission period of the set of common PDCCHs is predefined or configured by a network device.

50. The terminal device according to any of the claims 33 to 36, wherein the frequency units corresponding to the frequency offset indication information and/or the time units corresponding to the TA indication information are predefined or configured by a network device.

51. A network device, comprising:

the communication module is used for sending a group public Physical Downlink Control Channel (PDCCH) to the terminal equipment, wherein the group public PDCCH comprises frequency deviation indication information and/or Time Advance (TA) indication information, and the group public PDCCH is used for determining target frequency deviation information and/or target TA information by the terminal equipment;

Wherein the frequency offset indication information includes at least one of:

common frequency offset information for the group;

frequency offset information of each of the plurality of terminal devices;

the TA indication information includes at least one of:

common TA information for the group;

TA information of each of the plurality of terminal devices;

52. The network device of claim 51, wherein the first common frequency offset information for the group is obtained from the group common PDCCH or from system information;

53. The network device of claim 51, wherein the set of common frequency offset information is determined based on a first reference terminal location within a coverage area of the network device;

54. The network device of claim 53, wherein the first reference terminal location is a terminal location closest to the network device;

55. The network device of any one of claims 51 to 54, wherein the communication module is further configured to: and sending first configuration information to the terminal equipment, wherein the first configuration information is used for configuring the position of the frequency offset information of each terminal equipment and/or the TA information of each terminal equipment in Downlink Control Information (DCI) carried by the group public PDCCH.

56. The network device of claim 55, wherein the communication module is specifically configured to:

57. The network device of claim 56, wherein the higher layer signaling is radio resource control, RRC, signaling, system broadcast messages, or media access control, MAC, control elements, CEs.

58. The network device of claim 55, wherein the first configuration information comprises frequency offset information for each terminal device and/or a location number of TA information for each terminal device in the DCI.

59. The network device of any of claims 51 to 54, wherein the group public PDCCH is scrambled by a dedicated radio network temporary identifier, RNTI.

60. The network device of claim 59, wherein the dedicated RNTI is predefined or configured by a network device.

61. The network device of claim 59, wherein the dedicated RNTI is an RNTI for a particular terminal group.

62. The network device of any one of claims 51 to 54, wherein the communication module is specifically configured to: and periodically sending the group public PDCCH to the terminal equipment.

63. The network device of claim 62, wherein a transmission period of the set of common PDCCHs and/or a time domain position within the transmission period is predefined or configured by the network device.

64. The network device according to any of claims 51 to 54, wherein the frequency units corresponding to the frequency offset indication information and/or the time units corresponding to the TA indication information are predefined or configured by the network device.

65. A terminal device, comprising: a processor and a memory for storing a computer program, the processor being for invoking and running the computer program stored in the memory, performing the method of any of claims 1 to 18.

66. A network device, comprising: a processor and a memory for storing a computer program, the processor being for invoking and running the computer program stored in the memory, performing the method of any of claims 19 to 32.

67. A chip, comprising: a processor for calling and running a computer program from a memory, causing a device on which the chip is mounted to perform the method of any one of claims 1 to 18 or the method of any one of claims 19 to 32.

68. A computer readable storage medium storing a computer program for causing a computer to perform the method of any one of claims 1 to 18 or the method of any one of claims 19 to 32.