CN116489657A

CN116489657A - Communication method, device and computer readable storage medium

Info

Publication number: CN116489657A
Application number: CN202210043563.3A
Authority: CN
Inventors: 王俊; 于天航; 罗禾佳; 李榕
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2022-01-14
Filing date: 2022-01-14
Publication date: 2023-07-25
Also published as: WO2023134510A1

Abstract

The application provides a communication method, a device and a computer readable storage medium, wherein the method comprises the following steps: the second communication device sends first indication information to the first communication device, wherein the first indication information is used for indicating the frequency offset compensation capability of the second communication device; the second communication device receives resource information from the first communication device, wherein the resource information is determined according to the first indication information; and the second communication device performs frequency offset compensation on the first signal according to the resource information. Through the technical scheme provided by the application, the influence of Doppler frequency offset on signals can be reduced, so that the signal detection performance is improved.

Description

Communication method, device and computer readable storage medium

Technical Field

The present disclosure relates to the field of wireless communications technologies, and in particular, to a communication method, an apparatus, and a computer readable storage medium.

Background

Non-terrestrial networks (Non-Terrestrial Networks, NTN), such as satellite communications, have the advantages of wide coverage, long communication distance, high reliability, high flexibility, high throughput, etc., and are not subject to geographic environments, climatic conditions and natureThe effects of disasters have been widely used in the fields of aviation communications, maritime communications, military communications, and the like. Introducing satellites into fifth generation mobile communications (5 ^th The Generation, 5G) New air interface (NR) technology can provide communication services for areas that are difficult to be covered by a ground network, such as ocean, forest, etc., can enhance the reliability of 5G communication, such as providing more stable and better communication services for trains, airplanes, and users on these vehicles, and can also provide more data transmission resources to support a larger number of connections.

Mobile communication networks gradually develop to high frequency band and large bandwidth, and the maximum transmission bandwidth supported by the NR standard is 400MHz at present. In a broadband high-dynamic scene, such as a high-throughput Low Earth Orbit (LEO) satellite communication scene, due to the large system bandwidth, the Doppler frequency offset caused by motion can be as high as hundreds of kHz or even thousands of kHz, the influence of the Doppler frequency offset on different frequency points is different, and the larger the bandwidth is, the larger the influence difference of the Doppler frequency offset on different frequency points is. Doppler frequency offset can cause aliasing between signals of different users, and thus signal transmission fails. Therefore, in the broadband high-dynamic scenario, how to reduce the influence of the doppler frequency offset on the signal is a problem to be solved.

Disclosure of Invention

The embodiment of the application provides a communication method, a communication device and a computer readable storage medium, which can reduce the influence of Doppler frequency offset on signals, thereby improving the signal detection performance.

In a first aspect, the present application provides a communication method, which may be applied to a second communication device, where the second communication device may be a terminal device, or may be a device (for example, a chip, or a chip system, or a circuit) in the terminal device, or may be a device that can be used in cooperation with the terminal device. The method may include: the second communication device sends first indication information to the first communication device, wherein the first indication information is used for indicating the frequency offset compensation capability of the second communication device; the second communication device receives resource information from the first communication device, wherein the resource information is determined according to the first indication information; and the second communication device performs frequency offset compensation on the first signal according to the resource information.

In the scheme provided by the application, the second communication device can send the frequency offset compensation capability of the second communication device to the first communication device, the first communication device can determine the resource information configured for the second communication device according to the frequency offset compensation capability of the second communication device, and the second communication device performs frequency offset compensation processing on the sent or received signals according to the configured resource information. According to the method and the device for compensating the frequency offset of the second communication device, the first communication device knows the frequency offset compensation capability of the second communication device in advance, and configures the resource information according to the frequency offset compensation capability of the second communication device, so that the second communication device can compensate the frequency offset of the signal based on the resource information more accurately, the influence of Doppler frequency offset on the signal can be reduced, and the signal detection performance can be improved.

In one possible implementation, the resource information includes at least one of a first bandwidth, a first subcarrier spacing, and a first number of subcarriers.

After the second communication device receives the resource information, the frequency offset compensation is more accurate on the basis of the resource information, and the influence of Doppler frequency offset on the signal can be reduced, so that the signal detection performance can be improved.

In one possible implementation, the first indication information includes a capability level of the frequency offset compensation capability.

In the scheme provided by the application, the second communication device can grade the frequency offset compensation capability of the second communication device, namely the frequency offset compensation capability is graded into a plurality of capability grades, and then the corresponding capability grades are sent to the first communication device. Therefore, the resource information configured by the first communication device based on the capability level can be more accurate, so that the frequency offset compensation of the second communication device on the signal based on the resource information is more accurate, the influence of Doppler frequency offset on the signal can be reduced, and the signal detection performance can be improved.

In one possible implementation, the capability level is determined according to at least one of a bandwidth, a subcarrier spacing, a number of subcarriers, and a frequency offset between the first communication device and the second communication device.

The level of frequency offset compensation capability may be indicated by a range of parameters. Different levels correspond to different ranges of parameters related to one or more of bandwidth, subcarrier spacing, number of subcarriers, and frequency offset.

In one possible implementation manner, the determining, by the resource information according to the first indication information, includes: and the resource information is determined according to the capability level of the frequency offset compensation capability.

Different capability levels correspond to different parameter ranges, the first communication device determines specific resource information in the parameter range with smaller granularity based on the parameter range corresponding to a certain capability level, so that the determined resource information is more accurate, and therefore, the second communication device performs frequency offset compensation on signals based on the resource information, the influence of Doppler frequency offset on the signals can be reduced, and the signal detection performance can be improved.

In one possible implementation manner, the first indication information includes at least one of a second bandwidth, a second subcarrier spacing, and a second subcarrier number, where the second bandwidth corresponds to a maximum bandwidth of a frequency offset compensation capability of the second communication device, the second subcarrier spacing corresponds to a minimum subcarrier spacing of the frequency offset compensation capability of the second communication device, and the second subcarrier number corresponds to a maximum subcarrier number of the frequency offset compensation capability of the second communication device.

In the scheme provided by the application, the second communication device can report at least one parameter of the maximum bandwidth, the minimum subcarrier spacing and the maximum subcarrier number of the frequency offset compensation capability capable of being processed by the second communication device under the current frequency offset scene to the first communication device. In this way, the first communication apparatus may satisfy at least one of the following conditions when configuring at least one of the first bandwidth, the first subcarrier spacing, and the first subcarrier number included in the resource information: the first bandwidth is not more than the maximum bandwidth of the frequency offset compensation capability which can be processed by the second communication device, the first subcarrier interval is not less than the minimum subcarrier interval of the frequency offset compensation capability which can be processed by the second communication device, and the number of the first subcarriers is not more than the maximum number of the subcarriers of the frequency offset compensation capability which can be processed by the second communication device. The resource information is configured according to the frequency offset compensation capability which can be processed by the second communication device, so that the configured resource can not exceed the frequency offset compensation capability range which can be processed by the second communication device. And the first communication device configures the resource information according to the reference value sent by the second communication device, so that the efficiency of configuring the resource information can be improved.

In a second aspect, the present application provides a communication method, which may be applied to a first communication apparatus, where the first communication apparatus may be a network device, or may be an apparatus (for example, a chip, or a system on a chip, or a circuit) in the network device, or may be an apparatus that can be used in cooperation with the network device. The method may include: the method comprises the steps that a first communication device receives first indication information from a second communication device, wherein the first indication information is used for indicating the frequency offset compensation capability of the second communication device; the first communication device sends the resource information to the second communication device, and the resource information is determined according to the first indication information.

In the scheme provided by the application, the first communication device can receive the information of the frequency offset compensation capability from the second communication device, and the resource information configured for the second communication device is determined according to the frequency offset compensation capability of the second communication device, so that the second communication device can perform frequency offset compensation processing on the transmitted or received signals according to the configured resource information. According to the method and the device for compensating the frequency offset of the second communication device, the first communication device knows the frequency offset compensation capability of the second communication device in advance, and configures the resource information according to the frequency offset compensation capability of the second communication device, so that the second communication device can compensate the frequency offset of the signal based on the resource information more accurately, the influence of Doppler frequency offset on the signal can be reduced, and the signal detection performance can be improved.

It will be appreciated that the implementation body of the second aspect may be the first communication device, the specific content of the second aspect corresponds to the content of the first aspect, and the corresponding features and achieved beneficial effects of the second aspect may refer to the description of the first aspect, and detailed descriptions are omitted here as appropriate to avoid repetition.

In a third aspect, a communication apparatus is provided, which may be a second communication apparatus, which may be a terminal device, or may be an apparatus (for example, a chip, or a chip system, or a circuit) in a terminal device, or may be an apparatus that can be used in cooperation with a terminal device.

In a possible implementation, the communication apparatus may include modules or units corresponding to each other in a one-to-one manner to perform the method/operation/step/action described in the first aspect, where the modules or units may be hardware circuits, or software, or implemented by using hardware circuits in combination with software.

In one possible implementation, the communication device includes: a transmitting unit, configured to transmit, by a second communication device, first indication information to a first communication device, where the first indication information is used to indicate a frequency offset compensation capability of the second communication device; a receiving unit, configured to receive, by the second communication device, resource information from the first communication device, where the resource information is determined according to the first indication information; and the processing unit is used for carrying out frequency offset compensation on the first signal according to the resource information by the second communication device.

In a fourth aspect, a communication apparatus is provided, where the communication apparatus may be a first communication apparatus, and the first communication apparatus may be a network device, or may be an apparatus (for example, a chip, or a chip system, or a circuit) in the network device, or may be an apparatus that can be used in cooperation with a terminal device.

In a possible implementation, the communication apparatus may include modules or units corresponding to each other in a one-to-one manner to perform the method/operation/step/action described in the second aspect, where the modules or units may be hardware circuits, or software, or implemented by using hardware circuits in combination with software.

In one possible implementation, the communication device may include: a receiving unit, configured to receive, by a first communication device, first indication information from a second communication device, where the first indication information is used to indicate a frequency offset compensation capability of the second communication device; and the sending unit is used for sending the resource information to the second communication device by the first communication device, and the resource information is determined according to the first indication information.

In a fifth aspect, a communication apparatus is provided, which may be a second communication apparatus, which may be a terminal device, or may be an apparatus (for example, a chip, or a chip system, or a circuit) in a terminal device, or may be an apparatus that can be used in cooperation with a terminal device. The communication device may comprise a processor for executing a computer program which, when executed, causes the communication device to perform the communication method provided in the first aspect or any implementation of the first aspect.

In a possible implementation, the communication device further includes a memory, where the memory is configured to store the computer program. Optionally, the processor and memory are integrated; optionally, the memory is located outside the communication device.

In a possible implementation, the communication apparatus further comprises a communication interface for the communication apparatus to communicate with other devices, such as transmission or reception of data and/or signals. By way of example, the communication interface may be a transceiver, a circuit, a bus, a module, or other type of communication interface.

In a sixth aspect, a communication apparatus is provided, where the communication apparatus may be a first communication apparatus, and the first communication apparatus may be a network device, or may be an apparatus (for example, a chip, or a system on a chip, or a circuit) in a network device, or may be an apparatus that can be used in cooperation with a network device. The communication device may comprise a processor for executing a computer program which, when executed, causes the communication device to perform the second aspect or the communication method provided by any implementation of the second aspect.

In a seventh aspect, there is provided a communication system comprising the communication device of the fifth aspect and the communication device of the sixth aspect, optionally the communication device comprises the communication device of the third aspect and the communication device of the fourth aspect.

In an eighth aspect, there is provided a computer readable storage medium having stored thereon a computer program or computer instructions which, when executed, implement the communication method provided in the above aspects.

In a ninth aspect, there is also provided a computer program product comprising executable instructions which, when run on a user equipment, cause some or all of the steps of the method described in the first aspect and any one of its possible implementations, the second aspect and any one of its possible implementations to be performed.

In a tenth aspect, a chip system is provided, the chip system comprising a processor and further comprising a memory for implementing the method described in the first aspect and any one of its possible implementations, the second aspect and any one of its possible implementations. The chip system may be formed of a chip or may include a chip and other discrete devices.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present application, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic diagram of a network architecture according to an embodiment of the present application;

FIG. 2 is an interactive schematic diagram of a communication method according to an embodiment of the present application;

fig. 3 is a schematic structural diagram of a communication device according to an embodiment of the present application;

fig. 4 is a schematic structural diagram of another communication device according to an embodiment of the present application;

fig. 5 is a schematic structural diagram of still another communication device according to an embodiment of the present application;

Fig. 6 is a schematic structural diagram of a second communication device according to an embodiment of the present application.

Detailed Description

In order to make the present application solution better understood by those skilled in the art, the following description will be made in detail and with reference to the accompanying drawings in the embodiments of the present application, it is apparent that the described embodiments are only some embodiments of the present application, not all embodiments. All other embodiments, which can be made by one of ordinary skill in the art based on the embodiments herein without making any inventive effort, shall fall within the scope of the present application.

The definitions of technical terms that may appear in the embodiments of the present application are given below. The terminology used in the description section of the present application is for the purpose of describing particular embodiments of the present application only and is not intended to be limiting of the present application.

(1) Satellite communication

Non-terrestrial networks (non terrestrial network, NTN) such as satellite communication systems and high altitude platform (high altitude platform station, HAPS) communication have been popular in research from the 60 s of the 19 th century. Satellite communication is less affected by geographical conditions, and can achieve the goal of global coverage, so the development of satellite communication has very important significance. Especially when the local infrastructure is severely damaged and normal communication cannot be performed due to natural disasters, the satellite communication can provide powerful communication guarantee for effective disaster-resistant rescue. In addition, in some areas which are unfavorable for erecting ground base stations, including oceans, deserts, mountains and the like, effective communication can be performed through satellite communication, so that the full coverage of the communication is ensured.

In general, the higher the orbit of a satellite, the larger its coverage area, but the longer the communication delay. Currently, satellite mobile communication systems can be classified into four types according to the orbit (elliptical orbit, circular orbit) and altitude (high, medium, low) of the satellite operation:

1) Low orbit LEO satellite system: the track height is 500 km-2000 km;

2) Medium orbit (medium earth orbit, MEO) satellite system: the track height is 2000 km-20000 km;

3) High elliptical orbit (highly eccentric orbit, HEO) satellite system: is an elliptical orbit satellite system with lower near sites and extremely high far sites, and the orbit height is more than 20000km;

4) Synchronous orbit (geostationary earth orbit, GEO) satellite system: the orbit height is 35800km, and the relative position of the satellite running on the orbit and the earth is not influenced by the rotation of the earth.

The satellite in LEO is close to the ground, short in communication time delay and high in data transmission rate, is suitable for popularization in mass markets, and becomes a hot spot for current industry development.

Satellite communication systems can be classified into transparent forwarding (transmitting) satellite systems and regenerative (regenerating) satellite systems according to their processing power on board. The transparent forwarding satellite only carries out transparent transmission and frequency spectrum shifting on the signals, and does not relate to the processing of information; the regenerated satellite has the satellite signal processing capability, and the satellite can extract the original baseband signal and utilize the information to carry out route exchange and system configuration. At present, transparent forwarding satellite systems and regenerative satellite systems coexist and develop.

Satellite communication systems can be classified into non-staring satellite systems and staring satellite systems according to whether satellite beams move with satellites. Satellite beams of the non-staring satellite system move along with the satellite, the angles of the satellite beams do not change with time, and the ground fixed point can undergo more frequent beam switching during the satellite overhead period; the satellite beam angle of the staring satellite system is adjusted in a certain mode, and the satellite can realize continuous observation on a ground fixed point through beam angle switching.

In addition to geosynchronous orbit satellite systems, satellites in other types of satellite systems have a certain velocity of movement relative to the ground, and the lower the orbit height, the greater the relative velocity. Because of the relatively large moving speed of the satellite and the terminal, a large Doppler frequency shift can be generated, for example, LEO, and the Doppler range can reach-83.8 KHz to 83.8KHz under 700km of orbit. The satellite orbit selects a space of 120Km or more due to the influence of air resistance and the like. The maximum Doppler in the FR2 frequency band is 1.348MHz (normalized Doppler is 5.61 under 240KHz subcarrier spacing (subcarrier spacing, SCS) and 11.23 under 120KHz SCS) in the range of 10-170 degrees in the elevation angle of the user, and the maximum Doppler in the FR1 frequency band is 153.8KHz (normalized Doppler is 5.12 under 30KHz SCS and 10.25 under 15KHz SCS). Compared with a ground network, the NTN has higher requirement of resisting frequency offset.

(2) Frequency offset

Frequency offset, i.e., frequency offset. The frequency offset includes carrier frequency offset (carrier frequency offset, CFO) caused by the offset of the local oscillator carrier frequency at the transceiver end and Doppler Shift (Doppler Shift) caused by the relative motion of the transceiver end. In a high-speed moving scenario, the main component of the frequency offset is Doppler shift.

In which when a terminal device moves in a certain direction at a constant rate, a change in the phase and frequency of a received signal is caused due to a propagation path difference, and such a change is generally referred to as doppler shift. Alternatively, the difference between the transmitted and received frequencies due to the Doppler effect is referred to as the Doppler shift. It reveals the law of variation of the properties of the wave in motion.

Mobile communication networks gradually develop to high frequency band and large bandwidth, and the maximum transmission bandwidth supported by the NR standard is 400MHz at present. In a broadband high-dynamic scene, such as an LEO satellite communication scene, due to the large system bandwidth, the Doppler frequency offset caused by motion can reach hundreds of kHz or even thousands of kHZ, the influence of the Doppler frequency offset on different frequency points is different, and the larger the bandwidth is, the larger the influence difference of the Doppler frequency offset on the different frequency points is. Doppler frequency offset can cause aliasing between signals of different users, and thus signal transmission fails. Therefore, in the broadband high-dynamic scenario, how to reduce the influence of the doppler frequency offset on the signal is a problem to be solved.

In order to better understand a communication method, a communication device and a computer readable storage medium provided in the embodiments of the present application, a network architecture used in the embodiments of the present application is described below.

Referring to fig. 1, fig. 1 is a schematic diagram of a network architecture according to an embodiment of the present application. As shown in fig. 1, the network architecture may include a first communication device 101 and a second communication device 102. The second communication device 102 may be connected to the first communication device 101 by wireless means and may be accessed into the core network by the first communication device 101. The second communication device 102 may be fixed in position or may be movable.

The first communication device 101 may be a network apparatus. The network device is a device having a wireless transceiver function for communicating with a second communication apparatus (e.g., a terminal device), or may be a device for accessing the terminal device to a wireless network. The first communication means may be a node in a radio access network, also referred to as a base station, also referred to as a radio access network (radio access network, RAN) node (or device). The network device may be an evolved Node B (eNB or eNodeB) in LTE; or a next generation node B (next generation node B, gNB) in a 5G network or a base station in a future evolved public land mobile network (public land mobile network, PLMN), a broadband network traffic gateway (broadband network gateway, BNG), a converged switch or a non-third generation partnership project (3rd generation partnership project,3GPP) access device, etc. Alternatively, the network device in the embodiments of the present application may include various forms of base stations, for example: macro base station, micro base station (also called small station), relay station, access point, device for implementing base station function in communication system evolving after 5G, access Point (AP) in WiFi system, transmission point (transmitting and receiving point, TRP), transmitting point (transmitting point, TP), mobile switching center and Device-to-Device (D2D), vehicle-to-Device (V2X), device for bearing base station function in machine-to-machine (M2M) communication, etc., and may further include Centralized Unit (CU) and distributed unit (CU) in cloud access network (cloud radio access network, C-RAN) system, network Device in DU, NTN communication system, i.e. may be deployed on high altitude platform or satellite.

The second communication device 102 may be a terminal device or a module (e.g., a chip) applied to the terminal device. A terminal device is an entity on the user side for receiving or transmitting signals, such as a user equipment, an access terminal, a subscriber unit, a subscriber station, a mobile station, a remote terminal, a mobile device, a user terminal, a wireless communication device, a user agent, or a user equipment. The terminal device may also be a mobile phone, a cellular phone, a cordless phone, a session initiation protocol (session initiationprotocol, SIP) phone, a tablet (Pad), a computer with wireless transceiving functionality, a Virtual Reality (VR) terminal device, an augmented reality (augmented reality, AR) terminal device, a wireless terminal in industrial control (industrial control), a wireless local loop (wireless local loop, WLL) station, a personal digital assistant (personal digital assistant, PDA), a handheld device with wireless communication functionality, a computing device or other processing device connected to a wireless modem, a vehicle-mounted device, a wireless terminal in an unmanned (self-driving) system, a wireless terminal in a remote medical (remote media), a wireless terminal in a smart grid (smart grid), a wireless terminal in transportation security (transportation safety), a wireless terminal in a smart city (smart city), a wireless terminal in a smart home (smart home), a wearable device (e.g. a watch, a smart ring, a pace maker, etc.), a terminal in a smart home (G) system, an evolved network of a terminal in a smart PLMN 5G, etc., without limiting examples of this application. The terminal device may be deployed on land, including indoor or outdoor, hand-held, wearable or vehicle-mounted, on water surface (e.g., ship, etc.), or in air (e.g., airplane, balloon, satellite, etc.).

By way of example, and not limitation, in embodiments of the present application, the terminal may also be a wearable device. The wearable device can also be called as a wearable intelligent device, and is a generic name for intelligently designing daily wear by applying wearable technology and developing wearable devices, such as glasses, gloves, watches, clothes, shoes and the like. The wearable device is a portable device that is worn directly on the body or integrated into the clothing or accessories of the user. The wearable device is not only a hardware device, but also can realize a powerful function through software support, data interaction and cloud interaction. The generalized wearable intelligent device includes full functionality, large size, and may not rely on the smart phone to implement complete or partial functionality, such as: smart watches or smart glasses, etc., and focus on only certain types of application functions, and need to be used in cooperation with other devices, such as smart phones, for example, various smart bracelets, smart jewelry, etc. In addition, in the embodiment of the application, the terminal can also be a terminal in an internet of things (internet of things, ioT) system, and the IoT is an important component of information technology development, and the main technical characteristic of the terminal is that the article is connected with a network through a communication technology, so that man-machine interconnection and an intelligent network for the interconnection of the articles are realized. In the embodiment of the application, the IOT technology can achieve mass connection, deep coverage and terminal power saving through a Narrowband (NB) technology, for example. In addition, in the embodiment of the application, the terminal may further include sensors such as an intelligent printer, a train detector, and a gas station, and the main functions include collecting data (part of the terminal), receiving control information and downlink data of the network device, and transmitting electromagnetic waves to the network device to transmit uplink data.

The technical solution of the embodiment of the application can be applied to various communication systems, for example: the system can be applied to a fifth-generation (5th generation,5G) communication system such as an LTE system, an LTE frequency division duplex (frequency division duplex, FDD) system, an LTE time division duplex (time division duplex, TDD) system, an LTE advanced (LTE-a) system, an NR system, a wireless fidelity (wireless fidelity, wiFi) system, a communication system supporting integration of multiple wireless technologies, or a communication system evolving after 5G such as a sixth-generation (6th generation,6G) communication system.

The embodiment of the present application is not particularly limited to the specific structure of the execution body of the method provided in the embodiment of the present application, as long as the execution body of the method provided in the embodiment of the present application can communicate with the method provided in the embodiment of the present application by executing the program recorded with the code of the method provided in the embodiment of the present application, and for example, the execution body of the method provided in the embodiment of the present application may be the first communication device or the second communication device, or a functional module capable of calling the program and executing the program in the first communication device or the second communication device.

It should be noted that the number and types of the second communication devices included in the network architecture shown in fig. 1 are merely examples, and the embodiments of the present application are not limited thereto. For example, more or fewer second communication devices may be included in communication with the first communication device, and are not depicted in the figures for simplicity of description. In addition, in the network architecture shown in fig. 1, although the first communication apparatus and the second communication apparatus are shown, the application scenario may not be limited to including the first communication apparatus and the second communication apparatus, for example, may also include a core network node or an apparatus for carrying virtualized network functions, which will be obvious to those skilled in the art, and will not be described in detail herein.

Based on the above network architecture, a communication method provided in the embodiments of the present application is described below. Referring to fig. 2, fig. 2 is an interaction schematic diagram of a communication method according to an embodiment of the present application. As shown in fig. 2, the communication method may include the following steps.

Step S201: the second communication device transmits first indication information for indicating frequency offset compensation capability of the second communication device to the first communication device. Accordingly, the first communication device receives first indication information from the second communication device for indicating the frequency offset compensation capability of the second communication device.

In a possible implementation, the second communication device sends the first indication information at initial access, or the second communication device sends the first indication information before the first communication device allocates uplink and downlink resources to the second communication device.

The first indication information is used for indicating the frequency offset compensation capability of the second communication device, and the specific implementation manner can be any one of the following:

in one possible implementation, the first indication information may be used to indicate a class of frequency offset compensation capabilities of the second communication device. For example, the class of frequency offset compensation capabilities of the second communication device may be indicated with 1 bit (bit). Assuming that the frequency offset compensation capability of the second communication device is classified into two categories, i.e., a first category in which a value corresponding to the frequency offset compensation capability is greater than a threshold value and a second category in which a value corresponding to the frequency offset compensation capability is less than or equal to the threshold value, the frequency offset compensation capability of the second communication device may be represented as a first category by "0" and the frequency offset compensation capability of the second communication device may be represented as a second category by "1".

In a possible implementation, the first indication information is used to indicate a capability level of a frequency offset compensation capability of the second communication device. It will be appreciated that the second communication device may quantify the frequency offset compensation capabilities, subdivide the frequency offset compensation capabilities into a plurality of capability levels,

for example, the first indication information may indicate a capability level of the frequency offset compensation capability of the second communication apparatus by 1 bit (bit). Optionally, the capability level of the frequency offset compensation capability of the second communication device has a correspondence with the index, as shown in table 1, for example:

table 1 correspondence between level and index of frequency offset compensation capability

Index	Capability class of frequency offset compensation capability
		0	First capability class
1	Second capability level
		…	…
M-1	Mth capability class

As shown in table 1, the frequency offset compensation capability of the second communication device may be divided into M capability classes, including a first capability class, a second capability class, …, and an mth capability class, corresponding to indexes 0, 1, …, and M-1, respectively. The correspondence between the capability level of the frequency offset compensation capability and the index may be transmitted by the second communication device to the first communication device or may be predefined. The first indication information may indicate one of the indexes, and the first communication apparatus determines a corresponding capability level according to the index value, so that the resource information allocated to the second communication apparatus may be determined. For example, the first indication information indicates 0, the first communication device may determine that the capability level of the frequency offset compensation capability of the second communication device is the first capability level.

The capability level of the frequency offset compensation capability may be determined by the second communication device according to at least one of a bandwidth, a subcarrier spacing, a number of subcarriers, and a frequency offset between the first communication device and the second communication device. The capability level of the frequency offset compensation capability may be indicated by the ratio of the difference in frequency offset within the bandwidth to the subcarrier spacing. Illustratively, parameters are introducedBeta represents the ratio of the difference of frequency offset in the bandwidth of the second communication device to the subcarrier spacing, B represents the bandwidth, E represents the normalized frequency offset, SCS represents the subcarrier spacing in parts per million (parts per million, ppm), and N represents the number of subcarriers. It can be understood that b·e= (f) is the difference of frequency offsets within the bandwidth of the second communication device _max -f _min )·∈，f _max Represents the maximum frequency point, f _min Representing the minimum frequency point, wherein the frequency offset difference value is the maximum frequency offset valuef _{d max} And the minimum frequency offset value f _{d min} Wherein f is _{d max} ＝f _max ·∈，f _{d min} ＝f _min E. Optionally, the capability level of the frequency offset compensation capability of the second communication device corresponds to the β value range, as shown in table 2 for example:

table 2 correspondence between capability level of frequency offset compensation capability of second communication device and beta-range

Capability class of frequency offset compensation capability	Beta value range
		First capability class	β≤0.01
Second capability level	0.01<β≤0.05
		Third capability level	0.05<β≤0.1
Fourth capability level	β>0.1

As shown in table 2, the capability level of the frequency offset compensation capability of the second communication device may be converted into a ratio of the frequency offset difference value in the bandwidth of the second communication device to the subcarrier spacing, and assuming that M is 4, the frequency offset compensation capability of the second communication device is divided into 4 capability levels, and β is less than or equal to 0.01, 0.01< β is less than or equal to 0.05, 0.05< β is less than or equal to 0.1, and β >0.1, which correspond to the first capability level, the second capability level, the third capability level, and the fourth capability level, respectively. For example, if the second communication device determines that the value range of β is 0.05< β is less than or equal to 0.1, the second communication device may send, to the first communication device, indication information indicating that the capability level of the frequency offset compensation capability of the second communication device is the third capability level.

In a possible implementation, the first indication information includes at least one of a second bandwidth, a second subcarrier spacing, and a second subcarrier number, where the second bandwidth corresponds to a maximum bandwidth of a frequency offset compensation capability of the second communication device, the second subcarrier spacing corresponds to a minimum subcarrier spacing of the frequency offset compensation capability of the second communication device, and the second subcarrier number corresponds to a maximum subcarrier number of the frequency offset compensation capability of the second communication device. It can be appreciated that the second communication device may also send at least one parameter of a maximum bandwidth, a minimum subcarrier spacing, and a maximum subcarrier number that the second communication device can process through its own frequency offset compensation capability in the current frequency offset scenario to the first communication device.

It will be appreciated that the frequency offset in the possible implementations described above may be estimated from the signal received by the second communication device from the first communication device, or may be derived by the second communication device from the position/ephemeris of the first communication device and its own position information.

Step S202: the first communication device transmits the resource information to the second communication device. Accordingly, the second communication device receives the resource information from the first communication device.

After the first communication device receives the first indication information from the second communication device, the first communication device determines the resource information according to the first indication information.

In one possible implementation, in the case where the first indication information indicates that the class of the frequency offset compensation capability of the second communication apparatus is the first class, the first communication apparatus may allocate resource information according to actual service with the second communication apparatus, for example, the service data amount is smaller, and may allocate only smaller resources.

The first communication device determines that the resource information may include at least one of a first bandwidth, a first subcarrier spacing, and a first number of subcarriers, if the first indication information indicates that the frequency offset compensation capability of the second communication device is of the second category. The first bandwidth, the first subcarrier spacing, and the first number of subcarriers in the resource information may be related to a first threshold, a second threshold, and a third threshold.

In the case where the first bandwidth, the first subcarrier spacing, and the first subcarrier number in the resource information are related to the first threshold, the second threshold, and the third threshold, at least one of the following conditions may be satisfied:

the bandwidth corresponding to the first bandwidth is greater than or equal to a first threshold;

the first subcarrier spacing is less than or equal to a second threshold;

the first number of subcarriers is greater than or equal to a third threshold.

Wherein the first threshold, the second threshold, or the third threshold is determined by a frequency offset between the first communication device and the second communication device. For example, the first communication device may allocate a bandwidth greater than or equal to a first threshold to the second communication device, reserve guard bands on both sides of the bandwidth to prevent spectrum aliasing among the plurality of second communication devices, or allocate a bandwidth less than the first threshold to the second communication device, where the first threshold may be selected in relation to factors such as frequency offset between the first communication device and the second communication device, subcarrier spacing SCS, and so on. For example, the first, second and third thresholds may be absolute values of the difference in frequency offset values |Δf actually experienced by different frequency points within the bandwidth of the second communication device _d Values of i less than Yu SCS, α can be empirical, such as α=0.02 or α=0.05. For another example, in the NR standard, the band below 6G may support a maximum bandwidth of 100MHz, the band above 6G may support a maximum bandwidth of 400MHz, and the second threshold may be calculated according to the maximum bandwidth. For another example, the third threshold may be the same as the first threshold and may be understood as a predefined number of sub-carriers, i.e. the ratio of the bandwidth of the second communication device and the sub-carrier spacing.

In the above possible implementation, the first communication device may determine the resource information according to different types of frequency offset compensation capabilities, so that the resource configuration is more flexible and accurate.

In a possible implementation, in the first fingerAnd under the condition that the indication information indicates the capability level of the frequency offset compensation capability of the second communication device, the first communication device can determine the resource information according to the beta value range corresponding to the capability level of the frequency offset compensation capability of the second communication device. The resource information includes at least one of a first bandwidth, a first subcarrier spacing, and a first number of subcarriers. For example, if the capability level of the frequency offset compensation capability of the second communication device is the first capability level, the corresponding β value range is β less than or equal to 0.01, becauseThe first communication device determines that the ratio of the first bandwidth multiplied by the frequency offset to the subcarrier spacing is less than or equal to 0.01 or that the product of the number of subcarriers and the frequency offset is less than or equal to 0.01. For example, after determining a first subcarrier spacing, the first bandwidth or the first number of subcarriers may be derived from the relationship β.ltoreq.0.01. For another example, if the capability level of the frequency offset compensation capability of the second communication device is the second capability level, the corresponding β value range is 0.01 <Beta is less than or equal to 0.05 due to +.>The first communication device may determine that the ratio of the first bandwidth multiplied by the frequency offset to the subcarrier spacing is greater than 0.01 and less than or equal to 0.05, or that the product of the number of subcarriers and the frequency offset is greater than 0.01 and less than or equal to 0.05, and may, in particular, determine that after determining a first subcarrier spacing, determine that the ratio of the first bandwidth multiplied by the frequency offset to the subcarrier spacing is greater than 0.01<The relation of beta less than or equal to 0.05 deduces the first bandwidth or the first subcarrier number. Alternatively, the first subcarrier spacing may be one of one or more predefined fixed values.

In a possible implementation, in a case where the first indication information indicates at least one of the second bandwidth, the second subcarrier spacing, and the second subcarrier number, the first communication apparatus satisfies at least one of the following conditions when configuring at least one of the first bandwidth, the first subcarrier spacing, and the first subcarrier number included in the resource information: the first bandwidth is not more than the maximum bandwidth of the frequency offset compensation capability which can be processed by the second communication device, the first subcarrier interval is not less than the minimum subcarrier interval of the frequency offset compensation capability which can be processed by the second communication device, and the number of the first subcarriers is not more than the maximum number of the subcarriers of the frequency offset compensation capability which can be processed by the second communication device.

Step S203: and the second communication device performs frequency offset compensation on the first signal according to the resource information.

In one possible implementation, the first communication device may send a first signal to the second communication device, and the second communication device may perform frequency offset compensation on the first signal according to the resource information. The specific frequency offset compensation comprises the following steps:

and estimating a frequency offset value delta f, and then carrying out frequency spectrum shifting on the signal by using the frequency offset value delta f. The frequency offset compensation/pre-compensation of the signal can be performed in the time domain, namely, each frequency point in the time domain is multiplied by a phase value accumulated by the frequency offset, namely, the method can meet the following conditions:

/>

where x (n) represents the time domain signal to be compensated/precompensated,represents the compensated/precompensated time domain signal, n represents the index of the signal, T _s Representing the sampling interval, Δf is the frequency offset value.

Further, resampling can be performed on the compensated signal, and residual frequency offset on different frequency points can be compensated.

In one possible implementation, the frequency offset may be based on the Doppler frequency offset f, assuming that the frequency offset only considers Doppler frequency offset _d And estimating a frequency offset value delta f, and then carrying out frequency spectrum shifting on the frequency offset value delta f for the signal. Wherein the Doppler frequency offset f _d The method meets the following conditions:

wherein, the liquid crystal display device comprises a liquid crystal display device,f _d the Doppler frequency offset is represented, v represents the relative motion speed of a receiving end, θ represents the included angle of the motion direction of the receiving end, f represents the frequency point of a signal, and c=3×10 ⁸ m/s represents the speed of light.

The second communication device may determine the frequency point f according to the resource information, specifically, may determine the frequency domain position according to the first bandwidth in the resource information, determine the information of each frequency point in the frequency domain position according to the first subcarrier interval and/or the first subcarrier number, and calculate/estimate the frequency offset on each frequency point in the frequency domain position according to the information of the frequency point.

In a possible implementation, Δf is defined by f _d And other parameters.

The frequency offset compensation in the embodiment of the present application may include frequency offset compensation/precompensation, that is, when the second communication device is a receiving end, frequency offset compensation is performed on the received signal, and when the second communication device is a transmitting end, frequency offset precompensation is performed on the transmitted signal. The whole text is described in a unified way, and the following description is omitted.

In one possible implementation, the first communication device may further perform frequency offset pre-compensation on the first signal, and then send the first signal after frequency offset pre-compensation to the second communication device, where after the second communication device receives the first signal after frequency offset pre-compensation and the resource information, the second communication device performs frequency offset compensation on the first signal after frequency offset pre-compensation according to the resource information.

In one possible implementation, after the second communication device receives the precompensated first signal, only the frequency offset difference within the bandwidth of the first signal may be compensated for the precompensated first signal.

In one possible implementation, the first communication device may also send information of the precompensation value to the second communication device. The second communication device compensates the precompensated first signal for a frequency offset difference within the first signal bandwidth with reference to the value.

In one possible implementation, the first communication device may further send a residual frequency offset to be compensated by the second communication device to the second communication device, where the second communication device compensates the precompensated first signal for the residual frequency offset to be compensated within the bandwidth of the first signal according to the residual frequency offset to be compensated. Therefore, doppler frequency offset generated during the first signal transmission can be compensated as much as possible, and the signal detection performance is improved.

Optionally, for example, when going down, the first communication device may also instruct the second communication device to perform frequency offset compensation on the downlink signal received by the second communication device according to the capability level of the frequency offset compensation capability. Alternatively, for example, in the uplink, the second communication device may also inform the first communication device of which capability level it has pre-compensated the uplink signal with frequency offset. It should be noted that, assuming that the first communication apparatus may be a network device, the second communication apparatus may be a terminal device, the uplink may refer to a scenario in which the terminal device transmits signals or data to the network device, and the downlink may refer to a scenario in which the network device transmits signals or data to the terminal device.

In one embodiment, the first communication device may first perform frequency offset pre-compensation on the first signal and send the pre-compensated first signal to the second communication device.

It is appreciated that embodiments of the present application may be applied in broadband high dynamic scenarios, such as low-orbit satellite communications scenarios, and the like.

In the scheme provided by the application, the second communication device can send the frequency offset compensation capability of the second communication device to the first communication device, the first communication device can determine the resource information configured for the second communication device according to the frequency offset compensation capability of the second communication device, and the second communication device performs frequency offset compensation processing on the sent or received signals according to the configured resource information. Unlike the second communication device which does not transmit its own frequency offset compensation capability to the first communication device, the first communication device configures resource information to the second communication device. According to the method and the device for compensating the frequency offset, the first communication device knows the frequency offset compensation capability of the second communication device in advance, and configures the resource information according to the frequency offset compensation capability of the second communication device, so that the second communication device can compensate the frequency offset of the signal based on the resource information more accurately, the influence of Doppler frequency offset on the signal can be reduced, and the signal detection performance can be improved.

The method embodiments provided by the embodiments of the present application are described above, and the virtual device embodiments related to the embodiments of the present application are described below.

Referring to fig. 3, fig. 3 is a schematic structural diagram of a communication device according to an embodiment of the present application. The communication device may be a second communication device, which may be a terminal device, or may be a device (for example, a chip, or a chip system, or a circuit) in the terminal device, or may be a device that can be used in cooperation with the terminal device. As shown in fig. 3, the communication device 300 includes at least: a transmitting unit 301, a receiving unit 302, and a processing unit 303; wherein:

a transmitting unit 301, configured to transmit, by a second communication device, first indication information to a first communication device, where the first indication information is used to indicate a frequency offset compensation capability of the second communication device;

a receiving unit 302, configured to receive, by the second communication device, resource information from the first communication device, where the resource information is determined according to the first indication information;

and the processing unit 303 is configured to perform frequency offset compensation on the first signal according to the resource information by using the second communication device.

In one embodiment, the resource information includes at least one of a first bandwidth, a first subcarrier spacing, and a first number of subcarriers.

In one embodiment, the first indication information includes a capability level of the frequency offset compensation capability.

In one embodiment, the capability level is determined based on at least one of a bandwidth, a subcarrier spacing, a number of subcarriers, and a frequency offset between the first communication device and the second communication device.

In one embodiment, the determining of the resource information according to the first indication information includes: and the resource information is determined according to the capability level of the frequency offset compensation capability.

In one embodiment, the first indication information includes at least one of a second bandwidth, a second subcarrier spacing, and a second subcarrier number, where the second bandwidth corresponds to a maximum bandwidth of a frequency offset compensation capability of the second communication device, the second subcarrier spacing corresponds to a minimum subcarrier spacing of the frequency offset compensation capability of the second communication device, and the second subcarrier number corresponds to a maximum subcarrier number of the frequency offset compensation capability of the second communication device.

The more detailed descriptions of the transmitting unit 301, the receiving unit 302 and the processing unit 303 may be directly obtained by referring to the related descriptions of the second communication device in the method embodiment shown in fig. 2, which is not described herein.

Referring to fig. 4, fig. 4 is a schematic structural diagram of another communication device according to an embodiment of the present application. The communication device may be a first communication device, which may be a network apparatus, a device (for example, a chip, or a system on a chip, or a circuit) in a network apparatus, or a device that can be used in cooperation with a terminal apparatus. As shown in fig. 4, the communication device 400 includes at least: a receiving unit 401 and a transmitting unit 402, wherein:

a receiving unit 401, configured to receive, by a first communication device, first indication information from a second communication device, where the first indication information is used to indicate a frequency offset compensation capability of the second communication device;

and a transmitting unit 402, configured to transmit the resource information to the second communication device by using the first communication device, where the resource information is determined according to the first indication information.

The more detailed descriptions of the receiving unit 401 and the transmitting unit 402 may be directly obtained by referring to the related descriptions of the network device in the method embodiment shown in fig. 2, which is not repeated herein.

Based on the above network architecture, please refer to fig. 5, fig. 5 is a schematic structural diagram of another communication device according to an embodiment of the present application. As shown in fig. 5, the apparatus 500 may include one or more processors 501, where the processor 501 may also be referred to as a processing unit, and may implement certain control functions. The processor 501 may be a general purpose processor or a special purpose processor, etc. For example, a baseband processor or a central processing unit. The baseband processor may be used to process communication protocols and communication data, and the central processor may be used to control communication devices (e.g., base stations, baseband chips, terminals, terminal chips, DUs or CUs, etc.), execute software programs, and process data of the software programs.

In an alternative design, the processor 501 may also store instructions and/or data 503, where the instructions and/or data 503 may be executed by the processor, to cause the apparatus 500 to perform the method described in the method embodiment above.

In another alternative design, the processor 501 may include a transceiver unit for implementing the receive and transmit functions. For example, the transceiver unit may be a transceiver circuit, or an interface circuit, or a communication interface. The transceiver circuitry, interface or interface circuitry for implementing the receive and transmit functions may be separate or may be integrated. The transceiver circuit, interface or interface circuit may be used for reading and writing codes/data, or the transceiver circuit, interface or interface circuit may be used for transmitting or transferring signals.

In yet another possible design, apparatus 500 may include circuitry to implement the functions of transmitting or receiving or communicating in the foregoing method embodiments.

Optionally, the apparatus 500 may include one or more memories 502, on which instructions 504 may be stored, which may be executed on the processor, to cause the apparatus 500 to perform the methods described in the method embodiments above. Optionally, the memory may also store data therein. In the alternative, the processor may store instructions and/or data. The processor and the memory may be provided separately or may be integrated. For example, the correspondence described in the above method embodiments may be stored in a memory or in a processor.

Optionally, the apparatus 500 may further comprise a transceiver 505 and/or an antenna 506. The processor 501 may be referred to as a processing unit, controlling the apparatus 500. The transceiver 505 may be referred to as a transceiver unit, a transceiver circuit, a transceiver device, a transceiver module, or the like, for implementing a transceiver function.

Alternatively, the apparatus 500 in the embodiments of the present application may be used to perform the method described in fig. 2 in the embodiments of the present application.

In an embodiment, the communication apparatus 500 may be a second communication apparatus, which may be a terminal device, or may be a module (e.g. a chip) in the terminal device, where the processor 501 is configured to control operations performed by the processing unit 303 in the foregoing embodiment when the computer program instructions stored in the memory 502 are executed, and the transceiver 505 is configured to perform operations performed by the transmitting unit 301 and the receiving unit 302 in the foregoing embodiment, and the transceiver 505 is further configured to transmit information to other communication apparatuses other than the communication apparatus. The second communication device may also be configured to perform various methods performed by the second communication device in the method embodiment of fig. 2, which are not described herein.

In one embodiment, the communication apparatus 500 may be a first communication apparatus, which may be a network device, or may be a module (e.g. a chip) in the network device, where the transceiver 505 is configured to receive information from other communication apparatuses other than the communication apparatus when the computer program instructions stored in the memory 502 are executed, and where the transceiver 505 is further configured to perform the operations performed by the receiving unit 401 and the transmitting unit 402 in the above embodiment. The first communication device may also be configured to perform various methods performed by the first communication device in the method embodiment of fig. 2, which are not described herein.

The processors and transceivers described herein may be implemented on integrated circuits (integrated circuit, ICs), analog ICs, radio frequency integrated circuits RFICs, mixed signal ICs, application specific integrated circuits (application specific integrated circuit, ASIC), printed circuit boards (printed circuit board, PCB), electronic devices, and the like. The processor and transceiver may also be fabricated using a variety of IC process technologies such as complementary metal oxide semiconductor (complementary metal oxide semiconductor, CMOS), N-type metal oxide semiconductor (NMOS), P-type metal oxide semiconductor (positive channel metal oxide semiconductor, PMOS), bipolar junction transistor (Bipolar Junction Transistor, BJT), bipolar CMOS (BiCMOS), silicon germanium (SiGe), gallium arsenide (GaAs), etc.

The apparatus described in the above embodiment may be a network device or a terminal device, but the scope of the apparatus described in the present application is not limited thereto, and the structure of the apparatus may not be limited by fig. 5. The apparatus may be a stand-alone device or may be part of a larger device. For example, the device may be:

(1) A stand-alone integrated circuit IC, or chip, or a system-on-a-chip or subsystem;

(2) A set of one or more ICs, optionally including storage means for storing data and/or instructions;

(3) An ASIC, such as a modem (mobile station modem, MSM) of a mobile station;

(4) Modules that may be embedded within other devices;

(5) Others, and so on.

Referring to fig. 6, fig. 6 is a schematic structural diagram of a second communication device according to an embodiment of the present application. The second communication device may be a terminal device, or may be a module (e.g., a chip) in the terminal device. Fig. 6 shows only the main components of the second communication device. As shown in fig. 6, the second communication device 600 includes a processor, a memory, a control circuit, an antenna, and an input-output device. The processor is mainly used for processing the communication protocol and the communication data, controlling the whole terminal, executing the software program and processing the data of the software program. The memory is mainly used for storing software programs and data. The radio frequency circuit is mainly used for converting a baseband signal and a radio frequency signal and processing the radio frequency signal. The antenna is mainly used for receiving and transmitting radio frequency signals in the form of electromagnetic waves. Input and output devices, such as touch screens, display screens, keyboards, etc., are mainly used for receiving data input by a user and outputting data to the user.

When the second communication device is started, the processor can read the software program in the storage unit, analyze and execute the instructions of the software program and process the data of the software program. When data is required to be transmitted wirelessly, the processor carries out baseband processing on the data to be transmitted and then outputs a baseband signal to the radio frequency circuit, and the radio frequency circuit processes the baseband signal to obtain a radio frequency signal and transmits the radio frequency signal outwards in the form of electromagnetic waves through the antenna. When data is transmitted to the terminal, the radio frequency circuit receives a radio frequency signal through the antenna, the radio frequency signal is further converted into a baseband signal, and the baseband signal is output to the processor, and the processor converts the baseband signal into data and processes the data.

For ease of illustration, fig. 6 shows only one memory and processor. In an actual terminal, there may be multiple processors and memories. The memory may also be referred to as a storage medium or storage device, etc., and embodiments of the present application are not limited in this regard.

As an alternative implementation manner, the processor may include a baseband processor, which is mainly used to process the communication protocol and the communication data, and a central processor, which is mainly used to control the whole terminal, execute a software program, and process the data of the software program. The processor in fig. 6 integrates the functions of a baseband processor and a central processing unit, and those skilled in the art will appreciate that the baseband processor and the central processing unit may be separate processors, interconnected by bus technology, etc. Those skilled in the art will appreciate that a terminal may include multiple baseband processors to accommodate different network formats, and that a terminal may include multiple central processors to enhance its processing capabilities, with various components of the terminal being connectable via various buses. The baseband processor may also be expressed as a baseband processing circuit or a baseband processing chip. The central processing unit may also be expressed as a central processing circuit or a central processing chip. The function of processing the communication protocol and the communication data may be built in the processor, or may be stored in the storage unit in the form of a software program, which is executed by the processor to realize the baseband processing function.

In one example, as shown in fig. 6, the second communication device 600 includes a transceiver 601 and a processor 602. An antenna and a control circuit having a transmitting and receiving function can be regarded as a transceiver 601, which may also be referred to as a transceiver, a transmitting and receiving device, or the like. Alternatively, the device for implementing the receiving function in the transceiver 601 may be regarded as a receiving unit, and the device for implementing the transmitting function in the transceiver 601 may be regarded as a transmitting unit, i.e. the transceiver 601 includes a receiving unit and a transmitting unit. Illustratively, the receiving unit may also be referred to as a receiver, receiving circuitry, etc., and the transmitting unit may be referred to as a transmitter, or transmitting circuitry, etc. Alternatively, the receiving unit and the transmitting unit may be integrated together, or may be a plurality of independent units. The receiving unit and the transmitting unit may be located in one geographical location or may be distributed among a plurality of geographical locations.

In one embodiment, the processor 602 is configured to perform the operations performed by the processing unit 303 in the above embodiment, and the transceiver 601 is configured to perform the operations performed by the transmitting unit 301 and the receiving unit 302 in the above embodiment. The second communication device 600 may also be used to perform various methods performed by the second communication device in the method embodiment described above in fig. 2, which are not described herein.

The embodiment of the present application also provides a computer readable storage medium, on which a computer program is stored, where the program when executed by a processor may implement a procedure related to the second communication device in the communication method provided in the foregoing method embodiment.

The embodiment of the present application also provides a computer readable storage medium, on which a computer program is stored, where the program when executed by a processor may implement a procedure related to the first communication device in the communication method provided in the foregoing method embodiment.

Embodiments of the present application also provide a computer program product which, when run on a computer or processor, causes the computer or processor to perform one or more steps of any of the communication methods described above. The respective constituent modules of the above-mentioned apparatus may be stored in the computer-readable storage medium if implemented in the form of software functional units and sold or used as independent products.

The embodiment of the application further provides a chip system, which comprises at least one processor and a communication interface, wherein the communication interface and the at least one processor are interconnected through a line, and the at least one processor is used for running a computer program or instructions to execute part or all of the steps including any one of the steps described in the embodiment of the method corresponding to fig. 2. The chip system can be composed of chips, and can also comprise chips and other discrete devices.

The embodiment of the application also discloses a communication system, which comprises a second communication device and a first communication device, and the specific description can refer to the communication method shown in fig. 2.

It should be understood that the memories mentioned in the embodiments of the present application may be volatile memories or nonvolatile memories, or may include both volatile and nonvolatile memories. The nonvolatile memory may be a hard disk (HDD), a Solid State Drive (SSD), a read-only memory (ROM), a Programmable ROM (PROM), an Erasable Programmable ROM (EPROM), an electrically erasable programmable 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 (DDR SDRAM), enhanced SDRAM (ESDRAM), synchronous DRAM (SLDRAM), and direct memory bus RAM (DR RAM). The memory is any other medium that can be used to carry or store desired program code in the form of instructions or data structures and that can be accessed by a computer, but is not limited to such. The memory in the embodiments of the present application may also be circuitry or any other device capable of implementing a memory function for storing program instructions and/or data.

It should also be appreciated that the processors referred to in the embodiments of the present application may be central processing units (central processing unit, CPU), but may also be other general purpose processors, digital signal processors (digital signal processor, DSP), application specific integrated circuits (application specific integrated circuit, ASIC), off-the-shelf programmable gate arrays (field programmable gate array, FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, or the like. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like.

Note that when the processor is a general-purpose processor, DSP, ASIC, FPGA or other programmable logic device, discrete gate or transistor logic device, discrete hardware components, the memory (storage module) is integrated into the processor.

It should be noted that the memory described herein is intended to comprise, without being limited to, these and any other suitable types of memory.

It should be understood that, in various embodiments of the present application, the sequence numbers of the foregoing processes do not mean the order of execution, and the order of execution of the processes should be determined by the functions and internal logic thereof, and should not constitute any limitation on the implementation process of the embodiments of the present application.

Those of ordinary skill in the art will appreciate that the 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 ROM, a RAM, a magnetic disk, or an optical disk, etc.

The steps in the method of the embodiment of the application can be sequentially adjusted, combined and deleted according to actual needs.

The modules/units in the device of the embodiment of the application can be combined, divided and deleted according to actual needs.

The above embodiments are merely for illustrating the technical solution of the present application, and not for limiting the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A method of communication, comprising:

the second communication device sends first indication information to the first communication device, wherein the first indication information is used for indicating the frequency offset compensation capability of the second communication device;

the second communication device receives resource information from the first communication device, wherein the resource information is determined according to the first indication information;

and the second communication device performs frequency offset compensation on the first signal according to the resource information.

2. A method of communication, comprising:

the method comprises the steps that a first communication device receives first indication information from a second communication device, wherein the first indication information is used for indicating the frequency offset compensation capability of the second communication device;

the first communication device sends the resource information to the second communication device, and the resource information is determined according to the first indication information.

3. The method according to claim 1 or 2, wherein the resource information comprises at least one of a first bandwidth, a first subcarrier spacing and a first number of subcarriers.

4. A method according to any one of claims 1 to 3, wherein the first indication information comprises a capability level of the frequency offset compensation capability.

5. The method of claim 4, wherein the capability level is determined based on at least one of a bandwidth, a subcarrier spacing, a number of subcarriers, and a frequency offset between the first communication device and the second communication device.

6. The method according to claim 4 or 5, wherein the determining of the resource information according to the first indication information comprises:

and the resource information is determined according to the capability level of the frequency offset compensation capability.

7. The method according to any one of claims 1 to 6, wherein the first indication information includes at least one of a second bandwidth, a second subcarrier spacing, and a second number of subcarriers, the second bandwidth corresponding to a maximum bandwidth of a frequency offset compensation capability of the second communication device, the second subcarrier spacing corresponding to a minimum subcarrier spacing of the frequency offset compensation capability of the second communication device, and the second number of subcarriers corresponding to a maximum number of subcarriers of the frequency offset compensation capability of the second communication device.

8. A communication device, comprising:

a transmitting unit, configured to transmit, by a second communication device, first indication information to a first communication device, where the first indication information is used to indicate a frequency offset compensation capability of the second communication device;

a receiving unit, configured to receive, by the second communication device, resource information from the first communication device, where the resource information is determined according to the first indication information;

and the processing unit is used for carrying out frequency offset compensation on the first signal according to the resource information by the second communication device.

9. A communication device, comprising:

a receiving unit, configured to receive, by a first communication device, first indication information from a second communication device, where the first indication information is used to indicate a frequency offset compensation capability of the second communication device;

And the sending unit is used for sending the resource information to the second communication device by the first communication device, and the resource information is determined according to the first indication information.

10. The apparatus according to claim 8 or 9, wherein the resource information comprises at least one of a first bandwidth, a first subcarrier spacing and a first number of subcarriers.

11. The apparatus of any of claims 8 to 10, wherein the first indication information comprises a capability level of the frequency offset compensation capability.

12. The apparatus of claim 11, wherein the capability level is determined based on at least one of a bandwidth, a subcarrier spacing, a number of subcarriers, and a frequency offset between the first communication apparatus and the second communication apparatus.

13. The apparatus according to claim 11 or 12, wherein the determining of the resource information according to the first indication information comprises:

14. The apparatus according to any one of claims 8 to 13, wherein the first indication information includes at least one of a second bandwidth, a second subcarrier spacing, and a second number of subcarriers, the second bandwidth corresponding to a maximum bandwidth of a frequency offset compensation capability of the second communication apparatus, the second subcarrier spacing corresponding to a minimum subcarrier spacing of the frequency offset compensation capability of the second communication apparatus, the second number of subcarriers corresponding to a maximum number of subcarriers of the frequency offset compensation capability of the second communication apparatus.

15. A communications apparatus comprising a processor configured to execute instructions stored in a memory that when executed cause the method of any one of claims 1 to 7 to be implemented.

16. The communication device of claim 15, further comprising one or more of the memory and a transceiver for transceiving data and/or signaling.

17. A computer readable storage medium, characterized in that the computer readable storage medium has stored therein a computer program or computer instructions, which, when executed by a processor, cause the method according to any of claims 1 to 7 to be implemented.

18. A computer program product comprising instructions which, when run on a computer, cause the method of any one of claims 1 to 7 to be performed.

19. A system on a chip comprising at least one processor, a memory, and an interface circuit, wherein the memory, the interface circuit, and the at least one processor are interconnected by a line, and wherein the at least one memory has instructions stored therein; the instructions, when executed by the processor, cause the method of any one of claims 1 to 7 to be implemented.