CN116097685A

CN116097685A - Method, device, equipment and storage medium for reporting capability information

Info

Publication number: CN116097685A
Application number: CN202280003857.1A
Authority: CN
Inventors: 刘敏; 朱亚军
Original assignee: Beijing Xiaomi Mobile Software Co Ltd
Current assignee: Beijing Xiaomi Mobile Software Co Ltd
Priority date: 2022-09-30
Filing date: 2022-09-30
Publication date: 2023-05-09
Also published as: WO2024065750A1

Abstract

The application discloses a method, a device, equipment and a storage medium for reporting capability information, and relates to the field of mobile communication. The method comprises the following steps: and reporting capability information, wherein the capability information is used for indicating the capability of carrying out joint channel estimation on the downlink channels in the NTN. The terminal reports the capability of the joint channel estimation for the downlink channel in the NTN, so that the downlink joint channel estimation in the NTN system can be realized, and the downlink channel coverage in the NTN system is improved.

Description

Method, device, equipment and storage medium for reporting capability information

Technical Field

The present invention relates to the field of mobile communications, and in particular, to a method, an apparatus, a device, and a storage medium for reporting capability information.

Background

In Non-terrestrial communication network (Non-Terrestrial Network, NTN) systems, the transmission Path Loss (Path Loss) is large due to the long distance between the satellite (base station) and the terrestrial terminal, which results in limited coverage of some downlink channels.

Disclosure of Invention

The embodiment of the application provides a method, a device, equipment and a storage medium for reporting capability information. The technical scheme is as follows:

According to an aspect of the present application, there is provided a method for reporting capability information, where the method is performed by a terminal, and the method includes:

and reporting capability information, wherein the capability information is used for indicating the capability of carrying out joint channel estimation on the downlink channels in the NTN.

According to another aspect of the present application, there is provided a method for reporting capability information, the method being performed by a network device, the method including:

and receiving capability information reported by a terminal, wherein the capability information is used for indicating the capability of carrying out joint channel estimation on a downlink channel in the NTN.

According to another aspect of the present application, there is provided a device for reporting capability information, the device including:

and the sending module is used for reporting the capability information, wherein the capability information is used for indicating the capability of carrying out joint channel estimation on the downlink channels in the NTN.

the receiving module is used for receiving the capability information reported by the terminal, wherein the capability information is used for indicating the capability of carrying out joint channel estimation on the downlink channels in the NTN.

According to another aspect of the present application, there is provided a terminal including: a processor; a transceiver coupled to the processor; a memory for storing executable instructions of the processor; wherein the processor is configured to load and execute the executable instructions to implement the method of reporting capability information as described in the above aspects.

According to another aspect of the present application, there is provided a network device comprising: a processor; a transceiver coupled to the processor; a memory for storing executable instructions of the processor; wherein the processor is configured to load and execute the executable instructions to implement the method of reporting capability information as described in the above aspects.

According to another aspect of the present application, there is provided a computer readable storage medium having stored therein executable instructions that are loaded and executed by a processor to implement the method of reporting capability information as described in the above aspect.

According to another aspect of the present application, there is provided a chip including programmable logic circuits and/or program instructions for implementing the method of reporting capability information described in the above aspects when the chip is run on a computer device.

According to another aspect of the present application, there is provided a computer program product or computer program comprising computer instructions stored in a computer readable storage medium, from which a processor reads and executes the computer instructions, causing a computer device to perform the method of reporting capability information as described in the above aspects.

The technical scheme provided by the application at least comprises the following beneficial effects:

the terminal reports the capability of the joint channel estimation for the downlink channel in the NTN, so that the downlink joint channel estimation in the NTN system can be realized, and the downlink channel coverage in the NTN system is improved.

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 only some embodiments of the present application, and that 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 an NTN scenario based on a transparent load provided in an exemplary embodiment of the present application;

fig. 2 is a schematic diagram of an NTN scenario based on regenerative loading provided in an exemplary embodiment of the present application;

FIG. 3 is a flowchart of a method for reporting capability information provided by an exemplary embodiment of the present application;

FIG. 4 is a flowchart of a method for reporting capability information provided by an exemplary embodiment of the present application;

FIG. 5 is a flowchart of a method for reporting capability information provided by an exemplary embodiment of the present application;

FIG. 6 is a schematic diagram of a TDD spectrum provided by an exemplary embodiment of the present application;

fig. 7 is a schematic diagram of an FDD spectrum provided in an exemplary embodiment of the present application;

FIG. 8 is a block diagram of a device for reporting capability information provided in an exemplary embodiment of the present application;

FIG. 9 is a block diagram of a device for reporting capability information provided in an exemplary embodiment of the present application;

fig. 10 is a schematic structural diagram of a communication device according to an exemplary embodiment of the present application.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the present application more apparent, the embodiments of the present application will be described in further detail below with reference to the accompanying drawings.

Reference will now be made in detail to exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, the same numbers in different drawings refer to the same or similar elements, unless otherwise indicated. The implementations described in the following exemplary examples are not representative of all implementations consistent with the present application. Rather, they are merely examples of apparatus and methods consistent with some aspects of the present application as detailed in the accompanying claims.

The terminology used in the present disclosure is for the purpose of describing particular embodiments only and is not intended to be limiting of the disclosure. As used in this disclosure and the appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should also be understood that the term "and/or" as used herein refers to and encompasses any or all possible combinations of one or more of the associated listed items.

It should be understood that although the terms first, second, third, etc. may be used in this disclosure to describe various information, these information should not be limited to these terms. These terms are only used to distinguish one type of information from another. For example, first information may also be referred to as second information, and similarly, second information may also be referred to as first information, without departing from the scope of the present disclosure. The word "if" as used herein may be interpreted as "at … …" or "at … …" or "responsive to a determination", depending on the context.

Introduction to NTN system:

currently, the third generation partnership project (third Generation Partnership Project,3 GPP) is researching NTN technology. Compared with the traditional ground communication network (Terrestrial Network, TN) system, the NTN system adopts satellites, high-altitude platforms (High Altitude Platform Station, HAPS) and the like to participate in network deployment. Taking satellite communication as an example, it is theoretically possible to cover the global area except for the two-polar region of the earth by only a few satellites. Compared to TN systems, there are significant coverage advantages to NTN systems. Typical application scenarios of NTN systems include situations where base stations cannot be built and damaged, such as continuous coverage in remote mountainous areas, deserts, oceans, forests, or emergency communications when disasters occur, when base stations are damaged. A typical scenario of NTN systems can be summarized as: all-terrain coverage, signaling diversion, emergency communication, internet of things and broadcast services.

The NTN system may include a satellite system. Satellite systems can be classified into high-elliptical Orbit (High Elliptical Orbit, HEO) satellites, geosynchronous Orbit (Geostationary Earth Orbit, GEO) satellites, medium-Earth Orbit (MEO) satellites, and Low-Earth Orbit (LEO) satellites according to satellite heights, i.e., satellite orbital heights. In addition, the NTN system may further include an air network device such as a high altitude platform (High Altitude Platform Station, HAPS) communication system, and the network device related to the present application is not limited to the above example.

LEO satellite: LEO satellites may be referred to as non-stationary satellites, which are of many kinds. Taking the LEO satellite as an example, the LEO satellite moves relatively fast relative to the ground, about 7Km/s, so that the coverage area serviced by the LEO satellite also moves with the LEO satellite. The LEO satellite has short signal propagation distance, less link loss and low requirement on the transmitting power of the user terminal.

GEO satellites: GEO satellites are also known as stationary satellites, and the GEO satellites move at the same speed as the earth's rotation system, so they remain stationary relative to the ground. Correspondingly, the cell of the GEO satellite is also stationary. The coverage area of GEO satellite cells is large, typically 500km in cell diameter.

In order to ensure the coverage of the communication satellite and improve the system capacity of the whole satellite communication system, the communication satellite adopts multiple beams to cover the ground, and one communication satellite can form dozens or even hundreds of beams to cover the ground; a satellite beam may cover a ground area of several tens to hundreds of kilometers in diameter.

There are two types of satellites currently considered by 3GPP, respectively: a satellite that transmits the load (transparent payload) through, and a satellite that regenerates the load (regenerative payload). Fig. 1 shows a schematic diagram of an NTN scenario based on a transmission load, and fig. 2 shows a schematic diagram of an NTN scenario based on a regeneration load.

The NTN network consists of the following network elements:

1 or more network devices 16: for connecting the satellite 14 to a data network 18 on the ground.

Feeder Link: a link for communication between the network device 16 and the satellite 14.

Service Link: a link for communication between the user terminal 12 and the satellite 14.

Satellite 14: the functions provided by the device can be divided into transmission load and regeneration load.

Transparent load: only the functions of radio frequency filtering, frequency conversion and amplification are provided. Only transparent forwarding of signals is provided without changing the waveform signals it forwards.

Regeneration load: in addition to providing radio frequency filtering, frequency conversion and amplification, demodulation/decoding, routing/conversion, encoding/modulation functions may be provided. Which has some or all of the functionality of the base station.

Inter-Satellite Links (ISL): exist in NTN scenarios of regenerative load.

It should be noted that, in the embodiments of the present application, a terminal may refer to a UE (User Equipment), an access terminal, a subscriber unit, a subscriber station, a mobile station, a remote terminal, a mobile device, a wireless communication device, a User agent, or a User Equipment. Alternatively, the terminal may also be a cellular phone, a cordless phone, a SIP (Session Initiation Protocol ) phone, a WLL (Wireless Local Loop, wireless local loop) station, a PDA (Personal digital Assistant), a handheld device with a wireless communication function, a computing device or other processing device connected to a wireless modem, an in-vehicle device, a wearable device, a terminal in 5GS (5 th Generation System, fifth generation mobile communication system) or a terminal in a future evolved PLMN (Pub 1ic Land Mobi1e Network), or the like, which the embodiment of the present application is not limited to.

The access network device in the embodiment of the application is a device deployed in an access network to provide a wireless communication function for a terminal. The access network devices may include various forms of macro base stations, micro base stations, relay stations, access points, and the like. The names of access network device-capable devices may vary in systems employing different radio access technologies, for example in 5G NR systems, called gndeb or gNB. As communication technology evolves, the name "access network device" may change. For convenience of description, in the embodiments of the present application, the above devices for providing a wireless communication function for a terminal are collectively referred to as an access network device. Optionally, a communication relationship may be established between the terminal and the core network device through the access network device. Illustratively, in a long term evolution (Long Term Evolution, LTE) system, the access network device may be EUTRAN (Evolved Universal Terrestrial Radio Access Network, evolved universal terrestrial radio network) or one or more enodebs in EUTRAN; in a 5G NR system, the access network device may be a RAN or one or more gnbs in the RAN.

The core network device mainly has the functions of providing user connection, managing users and carrying out service, and is used as an interface for providing a bearing network to an external network. For example, core network devices in the 5G NR system may include AMF (Access and Mobility Management Function ) entities, UPF (User Plane Function, user plane function) entities, SMF (Session Management Function ) entities, and location management function (Location Management Function, LMF) entities, among others. The access network device and the core network device may be collectively referred to as a network device.

In NTN systems, the transmission Path Loss (Path Loss) is large due to the long distance between the satellite (base station) and the ground terminal, which results in limited coverage of some downlink channels.

Introducing the joint channel estimation:

the coverage of the channel can be improved by means of joint channel estimation (Joint channel estimation). The joint channel estimation may include demodulation reference signal (Demodulation Reference Signal, DMRS) bundling, specifically, the receiving end (base station) performs joint demodulation on multiple uplink channels (such as physical uplink shared channels) repeatedly transmitted (for example, by using the DMRS of the multiple uplink channels (for example, physical uplink shared channels) of the transmitting end (terminal), so that accuracy of channel estimation may be improved, and coverage of the uplink channels may be further improved.

The precondition of using DMRS bundling is that the terminal can ensure power consistency and phase continuity in a period of uplink transmission time. According to the definition of the existing standard, the requirement of phase continuity (phase consistency) is met when the phase difference between two slots (slots) of a terminal is not more than 25 degrees or 30 degrees. Illustratively, table 1 shows the maximum allowed phase difference (Maximum allowable phase difference for DMRS bundling) for DMRS bundling.

TABLE 1

For downlink joint channel estimation, a network device (base station) is required to ensure that power consistency and phase continuity are maintained in downlink transmission, and meanwhile, a terminal is required to have the capability of joint channel estimation on a downlink channel. According to the method provided by the embodiment of the application, the terminal reports the capability of the joint channel estimation of the downlink channel in the NTN, so that the downlink joint channel estimation in the NTN system can be realized, and the downlink channel coverage in the NTN system is improved.

Fig. 3 is a flowchart of a method for reporting capability information according to an embodiment of the present application. The method can be applied to the terminal. The method comprises the following steps:

step 302: and reporting capability information, wherein the capability information is used for indicating the capability of carrying out joint channel estimation on the downlink channels in the NTN.

The terminal belongs to an NTN system, and the terminal can report the capability information to network equipment in the NTN system. Terminals and network devices in the NTN system may refer to the examples in fig. 1 and 2.

Optionally, the capability information carries single bit (1 bit) information. The single bit information is used to reflect whether the terminal supports joint channel estimation for the downlink channel. Or, the single-bit information is used for reflecting whether the terminal supports joint channel estimation on the downlink repeated transmission channel in the first duration. The downlink retransmission channel is a downlink channel in which retransmission is performed. Optionally, the first duration refers to a duration occupied when the downlink repeated transmission channel performs repeated transmission according to a preset number of times, where the preset number of times is configured by the network device.

Or the capability information carries multi-bit information, and the multi-bit information is used for reflecting a first duration of supporting joint channel estimation of the downlink channel by the terminal. The downlink channel is repeatedly transmitted, the first duration is not longer than the duration occupied by the downlink channel when the downlink channel is repeatedly transmitted according to preset times, and the preset times are configured by the network equipment. For example, the first time length is equal to a transmission time length occupied when the downlink channel performs repeated transmission according to a preset number of times, and in this case, the first time length may also be referred to as a maximum time length (N).

Illustratively, the capability information carries 3-bit information, the content of the 3-bit information is 111, and the 3-bit information is used for reflecting that the terminal supports (maximum support) joint channel estimation on the downlink channel in 8 time units. Optionally, the multi-bit information can also be used to indicate the number of first durations that the terminal supports joint channel estimation for the downlink channel. For example, 3bit information is used to indicate 8 first durations for which the terminal supports joint channel estimation for the downlink channel.

Optionally, the unit of the first duration includes any one of the following:

time slots;

millisecond;

the number of slots associated with SCS.

Optionally, the capability information is reported for a downlink channel. I.e. for different downlink channels, the terminal may report capability information separately. For example, the terminal reports first capability information and second capability information, wherein the first capability information is reported for a physical downlink shared channel (Physical Downlink Shared Channel, PDSCH), and the second capability information is reported for a physical downlink control channel (Physical Downlink Control Channel, PDCCH). The capability information reported by the terminal aiming at different downlink channels is the same or different.

Optionally, the capability information is reported for a downlink channel transmission mode. That is, for different downlink channel transmission modes, the terminal may report the capability information separately, where the capability information reported separately is the same or different. The capability information can also be reported for the retransmission type of the downlink channel. That is, for the repeated transmission types of different downlink channels, the terminal may report the capability information separately, where the capability information reported separately is the same or different. For example, the terminal reports first capability information and second capability information, wherein the first capability information is reported for a retransmission scheme A (repetition Type A) of the PDSCH, and the second capability information is reported for a retransmission scheme B (repetition Type B) of the PDSCH. The capability information reported by the terminal aiming at different downlink channel sending modes is the same or different.

After reporting the capability information to the network device, the terminal receives the configuration duration sent by the network device, or the terminal can also determine the configuration duration by itself. The configuration time length is used for indicating the time length of the terminal for carrying out joint channel estimation on the downlink channel. This configuration duration may also be referred to as a time domain window (Time Domain Window, TDW).

Explicit configuration of the duration of joint channel estimation for network devices:

optionally, in the case that the capability information reported by the terminal can reflect that the terminal supports joint channel estimation on the downlink channel, the network device configures and sends the configuration duration to the terminal. For example, the terminal reports to the network device that it supports joint channel estimation of PDSCH, in which case the network device would indicate to the terminal the duration of joint channel estimation of PDSCH.

Optionally, the configuration duration (L) is not greater than a first duration, where the first duration is a duration during which the terminal supports joint channel estimation on the downlink channel, i.e. L is less than or equal to N. The downlink channel is repeatedly transmitted, the first duration is not longer than the duration occupied by the downlink channel when the downlink channel is repeatedly transmitted according to preset times, and the preset times are configured by the network equipment.

Optionally, the downlink channel comprises at least one of:

·PDSCH；

·PDCCH。

in the case that the downlink channel includes a plurality of downlink channels, the network device may send a plurality of configuration durations to the terminal, where each configuration duration corresponds to a downlink channel, and the configuration durations corresponding to each downlink channel are the same or different. Optionally, the configuration duration of the network device sent for different downlink channels is determined according to the capability information reported by the terminal for different downlink channels.

Optionally, the configuration duration sent by the network device to the terminal is configured based on the downlink partial bandwidth (DownLink Bandwidth Part, DL BWP) respectively, i.e. configured for per DL BWP. For example, the network device can configure the same or different configuration durations for downlink channels in different DL BWPs.

For the case that the terminal determines the duration of joint channel estimation by itself:

in the case where the network device does not send the configuration duration to the terminal, the terminal can determine the minimum value of the first duration and the second duration as the configuration duration, i.e., l=min (first duration, second duration). The first duration is a duration that the terminal supports joint channel estimation of the downlink channel. The downlink channel is repeatedly transmitted, and the first duration is not longer than the duration occupied by the downlink channel when the downlink channel is repeatedly transmitted according to preset times. The second duration may be referred to as a maximum repeated transmission duration, and specifically refers to a duration occupied when the downlink channel performs repeated transmission according to a preset number of times, where the preset number of times is configured by the network device.

For example, the preset number of times of repeated transmission of the downlink channel is 8, and the duration occupied by the downlink channel when the repeated transmission is performed for 8 times is 9 time units, that is, the second duration is 9 time units. The terminal supports joint channel estimation of the downlink channel in 8 time units, i.e. the first duration is 8 time units. In this case, the configuration duration determined by the terminal itself is 8 time units.

After determining the configuration duration, the terminal determines an actual time window for carrying out joint channel estimation on the downlink channel, and carries out joint channel estimation on the downlink channel in the time window. Optionally, in the case that the downlink channel includes a plurality of downlink channels, the terminal performs joint channel estimation on the downlink channels respectively in the same or different time windows.

The above case of explicitly configuring the duration of the joint channel estimation for the network device and/or determining the duration of the joint channel estimation for the terminal itself can only determine the nominal duration of the terminal performing the downlink joint channel estimation. The time length for the terminal to actually perform the downlink joint channel estimation is determined according to the specific situation.

For the case of a time division duplex (Time Division Duplexing, TDD) system:

(1) And the terminal determines a time window according to the configuration duration.

The terminal can determine a time window for joint channel estimation of the downlink channel by the terminal at least according to the configuration duration. Optionally, the terminal determines a time window for joint channel estimation of the downlink channel by the terminal according to the TDD configuration and the configuration duration. The TDD configuration includes correspondence between different time units and the channels on which they are transmitted. For example, in the configuration duration, if the TDD configuration indicates that a certain time unit is used for transmitting an uplink channel, the terminal does not perform joint channel estimation on the channel transmitted by the time unit. And calculating from the next downlink channel, wherein the calculated time length does not exceed TDW.

(2) The terminal determines the time window itself.

The terminal can also determine the time window for joint channel estimation of the downlink channel by itself. Optionally, the terminal determines a time window for joint channel estimation of the downlink channel by the terminal according to the TDD configuration. I.e. how many consecutive time units the terminal actually performs joint channel estimation, depends on the terminal implementation and is not subject to standardization. The TDD configuration includes correspondence between different time units and the channels on which they are transmitted. For example, if the TDD configuration indicates that a certain time unit is used for transmitting an uplink channel, the terminal does not perform joint channel estimation on the channel transmitted by the time unit.

Optionally, the time window includes at least one of the following information:

start position;

end position;

time span.

Optionally, the starting position refers to a position of a time unit where the terminal starts to perform joint channel estimation, the ending position refers to a position of a time unit where the terminal ends to perform joint channel estimation, and the time span refers to a number of time units occupied by the terminal to perform joint channel estimation. Optionally, the terminal may also consider a first duration of supporting joint channel estimation for the downlink channel when determining the time window.

For the case of a frequency division duplex (Frequency Division Duplexing, FDD) system:

in an FDD system, a terminal performs joint channel estimation on a downlink channel within a configured duration from a time point when the terminal receives the downlink channel for repeated transmission for the first time. In the FDD system, the length of the time window determined by the terminal is the configuration duration, and the starting position is the time when the terminal receives the downlink channel of the repeated transmission for the first time.

Optionally, in the process of performing joint channel estimation on the downlink channel in the FDD system, the terminal terminates the joint channel estimation on the downlink channel when at least one of the following conditions is satisfied:

Detecting a predefined termination event;

the end of the repeated transmission of the downlink channel.

Illustratively, the termination event includes a collision rule resulting in dropping or canceling the transmission downlink channel.

In summary, according to the method provided in this embodiment, the terminal reports the capability of the joint channel estimation for the downlink channel in the NTN, so that the downlink joint channel estimation in the NTN system can be implemented, and the coverage of the downlink channel in the NTN system is improved.

Fig. 4 is a flowchart of a method for reporting capability information according to an embodiment of the present application. The method can be applied to network equipment. The method comprises the following steps:

step 402: and receiving capability information reported by the terminal, wherein the capability information is used for indicating the capability of carrying out joint channel estimation on the downlink channels in the NTN.

Optionally, the capability information carries a single bit of information. The single bit information is used to reflect whether the terminal supports joint channel estimation for the downlink channel. Or, the single-bit information is used for reflecting whether the terminal supports joint channel estimation on the downlink repeated transmission channel in the first duration. The downlink retransmission channel is a downlink channel in which retransmission is performed. Optionally, the first duration refers to a duration occupied when the downlink repeated transmission channel performs repeated transmission according to a preset number of times, where the preset number of times is configured by the network device. Or the capability information carries multi-bit information, and the multi-bit information is used for reflecting a first duration of supporting joint channel estimation of the downlink channel by the terminal. The first duration is not longer than the duration occupied by the downlink channel when the downlink channel is repeatedly transmitted according to the preset times. In the case where the first time length is equal to a transmission time length occupied when the downlink channel performs repeated transmission by a preset number of times, the first time length may also be referred to as a maximum time length (N).

Optionally, the unit of the first duration includes any one of the following:

time slots;

millisecond;

the number of slots associated with SCS.

Optionally, the capability information is reported for a downlink channel. I.e. for different downlink channels, the terminal may report capability information separately. The capability information reported by the terminal aiming at different downlink channels is the same or different. Optionally, the capability information is reported for a downlink channel transmission mode. That is, for different downlink channel transmission modes, the terminal may report the capability information separately, where the capability information reported separately is the same or different. The capability information can also be reported for the retransmission type of the downlink channel. That is, for the repeated transmission types of different downlink channels, the terminal may report the capability information separately, where the capability information reported separately is the same or different.

After receiving the capability information reported by the terminal, the network device configures and transmits a configuration duration to the terminal. Optionally, the terminal can also determine the configuration duration by itself. The configuration time length is used for indicating the time length of the terminal for carrying out joint channel estimation on the downlink channel.

Optionally, the downlink channel comprises at least one of:

·PDSCH；

·PDCCH。

Optionally, the configuration duration sent by the network device to the terminal is based on the per DL BWP configuration. For example, the network device can configure the same or different configuration durations for downlink channels in different DL BWPs.

After receiving the configuration duration, the terminal determines an actual time window for carrying out joint channel estimation on the downlink channel, and carries out joint channel estimation on the downlink channel in the time window.

Fig. 5 shows a flowchart of a method for reporting capability information according to an embodiment of the present application. The method may be applied to a system as shown in fig. 1 or 2. The method comprises the following steps:

step 502: the terminal reports capability information, wherein the capability information is used for indicating the capability of carrying out joint channel estimation on downlink channels in the NTN.

Illustratively, the capability information carries 3-bit information, the content of the 3-bit information is 111, and the 3-bit information is used for reflecting that the terminal supports joint channel estimation on a downlink channel in 8 time units. Optionally, the multi-bit information can also be used to indicate the number of first durations that the terminal supports joint channel estimation for the downlink channel. For example, 3bit information is used to indicate 8 first durations for which the terminal supports joint channel estimation for the downlink channel.

Optionally, the unit of the first duration includes any one of the following:

time slots;

millisecond;

the number of slots associated with SCS.

Optionally, the capability information is reported for a downlink channel. I.e. for different downlink channels, the terminal may report capability information separately. For example, the terminal reports first capability information and second capability information, wherein the first capability information is reported for PDSCH and the second capability information is reported for PDCCH. The capability information reported by the terminal aiming at different downlink channels is the same or different.

Step 504: the network device sends the configuration duration to the terminal.

The configuration time length is used for indicating the time length of the terminal for carrying out joint channel estimation on the downlink channel. This configuration time period may also be referred to as TDW. Optionally, in the case that the capability information reported by the terminal can reflect that the terminal supports joint channel estimation on the downlink channel, the network device configures and sends the configuration duration to the terminal. For example, the terminal reports to the network device that it supports joint channel estimation of PDSCH, in which case the network device would indicate to the terminal the duration of joint channel estimation of PDSCH.

Optionally, the downlink channel comprises at least one of:

·PDSCH；

·PDCCH。

Optionally, the configuration duration sent by the network device to the terminal is configured separately based on DL BWP, i.e. configured for per DL BWP. For example, the network device can configure the same or different configuration durations for downlink channels in different DL BWPs.

Step 506: the terminal determines the configuration duration by itself.

Step 508: the terminal determines a time window for joint channel estimation of the downlink channel.

Optionally, in the case that the downlink channel includes a plurality of downlink channels, the terminal performs joint channel estimation on the downlink channels respectively in the same or different time windows.

For the case of a TDD system:

(2) The terminal determines the time window itself.

Optionally, the time window includes at least one of the following information:

start position;

end position;

time span.

Illustratively, fig. 6 is a schematic diagram of a TDD spectrum provided by an exemplary embodiment of the present application. As shown in fig. 6, U in the spectrum indicates downlink transmission, and D indicates uplink transmission. In a TDD system, the configuration duration l=4, the number of repeated transmissions of the downlink channel is 8 (repeated transmissions of PDSCH in a TDD system are skipped if uplink transmissions are encountered, but the number of repeated transmissions is still counted). The start position of the repeated transmission of the downlink channel is slot1 (or a symbol in slot 1) and continues to slot9. The time window (actual TDW) length of the joint channel estimation determined by the terminal is 4. In this case, the terminal performs joint channel estimation at slot1 and slot2, and slot3 is uplink skipped, and then performs joint channel estimation at slot4-slot 7. Although slot8 and slot9 are also downlink repeated transmissions, if joint channel estimation is continued on the basis of slot4-slot7, the length of the time window will be exceeded, so that the terminal only performs joint channel estimation on slot4-slot 7. Then, joint channel estimation is performed at slot8 and slot9.

For the case of FDD systems:

in an FDD system, a terminal performs joint channel estimation on a downlink channel within a configured duration from a time point when the terminal receives the downlink channel for repeated transmission for the first time. In the FDD system, the length of the time window determined by the terminal is the configuration duration, and the starting position is the time when the terminal receives the downlink channel of the repeated transmission for the first time. Optionally, the time when the terminal receives the downlink channel of the repeated transmission for the first time refers to a slot (slot) or a time domain symbol (symbol) when the terminal receives the downlink channel of the repeated transmission for the first time.

detecting a predefined termination event;

the end of the repeated transmission of the downlink channel.

Illustratively, fig. 7 is a schematic diagram of an FDD spectrum provided by an exemplary embodiment of the present application. As shown in fig. 7, U in the spectrum indicates downlink transmission, and D indicates uplink transmission. In the FDD system, the configuration duration l=4, and the number of repeated transmissions of the downlink channel is 15. The starting position of the repeated transmission of the downlink channel is slot1 (or a symbol in slot 1), and the time lasts until slot15, and the terminal receives the repeated transmission downlink channel for the first time in slot 1. In this case, the terminal performs joint channel estimation at slot0-slot 3. Because the termination event is detected in slot4, the terminal skips slot4-slot7 and does not perform joint channel estimation. Then, the terminal performs joint channel estimation at

slots

8 and 9, and the terminal skips slots 10 and 11 due to the fact that the termination event is detected at slot 10. Then, the terminal performs joint channel estimation at slot12-slot14, and the terminal ends the joint channel estimation due to the detection of the termination event at slot 15.

It should be noted that, the above steps 504 and 506 are parallel steps, that is, only one of the steps 504 and 506 is executed when the method provided in the present embodiment is executed.

Optionally, the duration of reporting by the terminal and the duration of configuring the network device in the embodiments of the present application are configured in a specific duration manner, or are configured in other manners. For example by bit, code point configuration. The corresponding time length can be determined by combining information such as bits, code points and the like with preset information.

It should be noted that, the sequence of the steps of the method provided in the embodiment of the present application may be appropriately adjusted, the steps may also be increased or decreased according to the situation, and any method that is easily conceivable to be changed by those skilled in the art within the technical scope of the present application should be covered within the protection scope of the present application, so that no further description is given.

Fig. 8 is a block diagram illustrating a configuration of a capability information reporting apparatus according to an exemplary embodiment of the present application. As shown in fig. 8, the apparatus includes:

A sending module 801, configured to report capability information, where the capability information is used to indicate a capability of performing joint channel estimation on a downlink channel in the NTN.

In an alternative design, the capability information carries a single bit of information; the single bit information is used for reflecting whether the device supports joint channel estimation on the downlink channel; or, the single bit information is used for reflecting whether the device supports joint channel estimation on the downlink repeated transmission channel in the first duration.

In an alternative design, the capability information carries multiple bits of information, where the multiple bits of information are used to reflect a first duration that the apparatus supports joint channel estimation for the downlink channel.

In an alternative design, the unit of the first duration may include any one of:

time slots;

a millisecond;

number of slots associated with SCS.

In an alternative design, the apparatus further comprises:

a receiving module 802, configured to receive a configuration duration sent by a network device;

the configuration duration is used for indicating duration of joint channel estimation of the downlink channel by the device.

In an alternative design, the configuration duration is not greater than a first duration, where the first duration is a duration during which the apparatus supports joint channel estimation for the downlink channel.

In an alternative design, the downlink channel may include at least one of:

PDSCH；

PDCCH。

in an alternative design, in a case where the downlink channels include a plurality of downlink channels, the configuration duration corresponding to each of the downlink channels is different.

In an alternative design, the configuration duration is configured separately based on DL BWP.

In an alternative design, the apparatus further comprises:

a determining module 803, configured to determine a minimum value of the first duration and the second duration as the configuration duration;

the first duration is a duration that the device supports joint channel estimation on the downlink channel, and the second duration is a duration that the downlink channel occupies for repeated transmission for a preset number of times.

In an alternative design, the apparatus further comprises:

a determining module 803, configured to determine a time window for performing joint channel estimation on the downlink channel by the apparatus at least according to the configuration duration.

In an alternative design, the determining module 803 is configured to:

and determining a time window for carrying out joint channel estimation on the downlink channel by the device according to TDD configuration and the configuration duration.

In an alternative design, the apparatus further comprises:

a determining module 803, configured to determine a time window for the apparatus to perform joint channel estimation on the downlink channel.

In an alternative design, the determining module 803 is configured to:

and determining a time window for the device to perform joint channel estimation on the downlink channel according to the TDD configuration.

In an alternative design, the time window includes at least one of the following information:

a start position;

an end position;

time span.

In an alternative design, the apparatus further comprises:

an estimation module 804, configured to perform joint channel estimation on the downlink channel in the configured duration from a time point when the apparatus receives the downlink channel of the repeated transmission for the first time in the FDD system.

In an alternative design, the estimating module 804 is configured to:

terminating joint channel estimation for the downlink channel when at least one of the following conditions is satisfied:

detecting a predefined termination event;

and the repeated transmission of the downlink channel is ended.

In an alternative design, the capability information is reported for the downlink channel.

Fig. 9 is a block diagram illustrating a configuration of a capability information reporting apparatus according to an exemplary embodiment of the present application. As shown in fig. 9, the apparatus includes:

the receiving module 901 is configured to receive capability information reported by a terminal, where the capability information is used to indicate a capability of performing joint channel estimation on a downlink channel in NTN.

In an alternative design, the capability information carries a single bit of information; the single-bit information is used for reflecting whether the terminal supports joint channel estimation on the downlink channel; or, the single-bit information is used for reflecting whether the terminal supports joint channel estimation on the downlink repeated transmission channel in the first duration.

In an alternative design, the capability information carries multiple bits of information, where the multiple bits of information are used to reflect a first duration that the terminal supports joint channel estimation for the downlink channel.

time slots;

a millisecond;

number of slots associated with SCS.

In an alternative design, the apparatus further comprises:

a sending module 902, configured to send a configuration duration to the terminal;

The configuration duration is used for indicating duration of joint channel estimation of the downlink channel by the terminal.

In an alternative design, the configuration duration is not greater than a first duration, where the first duration is a duration during which the terminal supports joint channel estimation for the downlink channel.

In an alternative design, the downlink channel may include at least one of:

PDSCH；

PDCCH。

It should be noted that, when the apparatus provided in the foregoing embodiment performs the functions thereof, only the division of the respective functional modules is used as an example, in practical application, the foregoing functional allocation may be performed by different functional modules according to actual needs, that is, the content structure of the device is divided into different functional modules, so as to perform all or part of the functions described above.

The specific manner in which the various modules perform the operations in the apparatus of the above embodiments have been described in detail in connection with the embodiments of the method, and will not be described in detail herein.

Fig. 10 shows a schematic structural diagram of a communication device according to an exemplary embodiment of the present application, where the communication device 100 includes: a processor 1001, a receiver 1002, a transmitter 1003, a memory 1004, and a bus 1005.

The processor 1001 includes one or more processing cores, and the processor 1001 executes various functional applications and information processing by running software programs and modules.

The receiver 1002 and the transmitter 1003 may be implemented as one communication component, which may be a communication chip.

The memory 1004 is connected to the processor 1001 through a bus 1005.

The memory 1004 may be used for storing at least one instruction that the processor 1001 uses to execute to implement the various steps in the method embodiments described above.

Further, the memory 1004 may be implemented by any type of volatile or nonvolatile storage device or combination thereof, including but not limited to: magnetic or optical disks, electrically erasable programmable Read-Only Memory (Erasable Programmable Read Only Memory, EEPROM), erasable programmable Read-Only Memory (Erasable Programmable Read Only Memory, EPROM), static random access Memory (Static Random Access Memory, SRAM), read-Only Memory (ROM), magnetic Memory, flash Memory, programmable Read-Only Memory (Programmable Read-Only Memory, PROM).

When the communication device is implemented as a terminal, the processor and the transceiver in the communication device according to the embodiments of the present application may be implemented together as one communication chip, or the transceiver may form the communication chip separately. Wherein, the transmitter in the transceiver performs the transmitting step performed by the terminal in any of the above-mentioned methods, the receiver in the transceiver performs the receiving step performed by the terminal in any of the above-mentioned methods, and the processor performs steps other than the transmitting and receiving steps, which are not described herein.

When the communication device is implemented as a network device, the processor and the transceiver in the communication device according to the embodiments of the present application may be implemented together as one communication chip, or the transceiver may form the communication chip separately. Wherein, the transmitter in the transceiver performs the transmitting step performed by the network device in any of the above-mentioned methods, the receiver in the transceiver performs the receiving step performed by the network device in any of the above-mentioned methods, and the processor performs steps other than the transmitting and receiving steps, which are not described herein.

In an exemplary embodiment, there is also provided a computer readable storage medium having stored therein at least one instruction, at least one program, a code set, or an instruction set, which is loaded and executed by the processor to implement the method for reporting capability information provided by the above-mentioned respective method embodiments.

In an exemplary embodiment, a chip is provided, where the chip includes programmable logic circuits and/or program instructions, and when the chip is running on a communication device, the chip is configured to implement a method for reporting capability information provided by the foregoing method embodiments.

In an exemplary embodiment, a computer program product is also provided, which, when run on a processor of a computer device, causes the computer device to perform the above-described method of reporting capability information.

Those skilled in the art will appreciate that in one or more of the examples described above, the functions described in the embodiments of the present application may be implemented in hardware, software, firmware, or any combination thereof. When implemented in software, these functions may be stored on or transmitted over as one or more instructions or code on a computer-readable medium. Computer-readable media includes both computer storage media and communication media including any medium that facilitates transfer of a computer program from one place to another. A storage media may be any available media that can be accessed by a general purpose or special purpose computer.

The foregoing description of the exemplary embodiments of the present application is not intended to limit the invention to the particular embodiments disclosed, but on the contrary, the intention is to cover all modifications, equivalents, alternatives, and alternatives falling within the spirit and scope of the invention.

Claims

1. A method for reporting capability information, wherein the method is performed by a terminal, the method comprising:

and reporting capability information, wherein the capability information is used for indicating the capability of carrying out joint channel estimation on downlink channels in the non-ground communication network NTN.

2. The method of claim 1, wherein the capability information carries single bit information;

the single-bit information is used for reflecting whether the terminal supports joint channel estimation on the downlink channel; or, the single-bit information is used for reflecting whether the terminal supports joint channel estimation on the downlink repeated transmission channel in the first duration.

3. The method of claim 1, wherein the capability information carries multi-bit information reflecting a first duration for which the terminal supports joint channel estimation for the downlink channel.

4. A method according to claim 3, wherein the units of the first time period comprise any one of:

time slots;

a millisecond;

the number of slots associated with the subcarrier spacing SCS.

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

receiving configuration time length sent by network equipment;

6. The method of claim 5, wherein the configuration duration is not greater than a first duration, the first duration being a duration during which the terminal supports joint channel estimation for the downlink channel.

7. The method of claim 5, wherein the downlink channel comprises at least one of:

a physical downlink shared channel PDSCH;

physical downlink control channel PDCCH.

8. The method of claim 7, wherein in the case where the downlink channel includes a plurality of downlink channels, the configuration duration corresponding to each of the downlink channels is different.

9. The method of claim 5, wherein the configuration duration is configured based on downlink fractional bandwidth DL BWP, respectively.

10. The method of claim 5, wherein the method further comprises:

determining the minimum value of the first time length and the second time length as the configuration time length;

the first duration is a duration of the terminal supporting joint channel estimation on the downlink channel, and the second duration is a duration occupied by repeated transmission of the downlink channel for a preset number of times.

11. The method of claim 5, wherein the method further comprises:

and determining a time window for the terminal to perform joint channel estimation on the downlink channel at least according to the configuration duration.

12. The method of claim 11, wherein the determining the number of continuous time units occupied by the terminal for joint channel estimation of the downlink channel based at least on the configuration duration comprises:

and determining a time window for the terminal to perform joint channel estimation on the downlink channel according to the Time Division Duplex (TDD) configuration and the configuration time length.

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

and determining a time window for the terminal to perform joint channel estimation on the downlink channel.

14. The method of claim 13, wherein the determining the number of consecutive time units occupied by the terminal for joint channel estimation of the downlink channel comprises:

and determining a time window for the terminal to perform joint channel estimation on the downlink channel according to the TDD configuration.

15. The method according to any of claims 11 to 14, wherein the time window comprises at least one of the following information:

a start position;

an end position;

time span.

16. The method of claim 5, wherein the method further comprises:

in a frequency division duplex FDD system, starting from the moment when the terminal receives the downlink channel of the repeated transmission for the first time, performing joint channel estimation on the downlink channel within the configuration duration.

17. The method of claim 16, wherein the method further comprises:

detecting a predefined termination event;

and the repeated transmission of the downlink channel is ended.

18. The method according to any of claims 1 to 17, wherein the capability information is reported for the downlink channel.

19. A method for reporting capability information, the method being performed by a network device, the method comprising:

20. The method of claim 19, wherein the capability information carries single bit information;

21. The method of claim 19, wherein the capability information carries multiple bits of information reflecting a first duration for which the terminal supports joint channel estimation for the downlink channel.

22. The method of claim 21, wherein the units of the first time period comprise any one of:

time slots;

a millisecond;

number of slots associated with SCS.

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

Sending configuration duration to the terminal;

24. The method of claim 23, wherein the configuration duration is not greater than a first duration, the first duration being a duration during which the terminal supports joint channel estimation for the downlink channel.

25. The method of claim 23, wherein the downlink channel comprises at least one of:

PDSCH；

PDCCH。

26. the method of claim 25, wherein in the case where the downlink channel includes a plurality of downlink channels, the configuration duration corresponding to each of the downlink channels is different.

27. The method of claim 23, wherein the configuration duration is configured separately based on DL BWP.

28. The method according to any of claims 19 to 27, wherein the capability information is reported for the downlink channel.

29. A device for reporting capability information, the device comprising:

30. A device for reporting capability information, the device comprising:

31. A terminal, the terminal comprising:

a processor;

a transceiver coupled to the processor;

a memory for storing executable instructions of the processor;

wherein the processor is configured to load and execute the executable instructions to implement the method of reporting capability information according to any one of claims 1 to 18.

32. A network device, the network device comprising:

a processor;

a transceiver coupled to the processor;

a memory for storing executable instructions of the processor;

wherein the processor is configured to load and execute the executable instructions to implement the method of reporting capability information as claimed in any one of claims 19 to 28.

33. A computer readable storage medium having stored therein executable instructions that are loaded and executed by a processor to implement the method of reporting capability information according to any one of claims 1 to 28.

34. A chip comprising programmable logic or a program, the chip being configured to implement the method for reporting capability information according to any one of claims 1 to 28.