WO2021159449A1

WO2021159449A1 - Method for updating timing advance, terminal device, and network device

Info

Publication number: WO2021159449A1
Application number: PCT/CN2020/075221
Authority: WO
Inventors: 李海涛
Original assignee: Oppo广东移动通信有限公司
Priority date: 2020-02-14
Filing date: 2020-02-14
Publication date: 2021-08-19
Also published as: CN114830817A; CN114830817B

Abstract

Disclosed are a method for updating timing advance (TA), a terminal device, a network device, a chip, a computer readable storage medium, a computer program product, and a computer program. The method comprises: a terminal device reports first information; the first information is predicted or determined according to position information of the terminal device and ephemeris information of a network device; and the first information comprises: TA updating auxiliary information and/or a TA value.

Description

A timing advance update method, terminal equipment and network equipment

Technical field

The present invention relates to the field of communications, and in particular to a timing advance (TA, Timing Advance) update method, terminal equipment, network equipment, chips, computer-readable storage media, computer program products, and computer programs.

Background technique

In related technologies, in the New Radio (NR, New Radio) terrestrial network, the TA changes between the terminal equipment and the network are small, and the network uses TimeAlignmentTimer (time alignment timer) to allow the terminal equipment to maintain effective TA, namely During the operation of TimeAlignmentTimer, the TA maintained by the terminal device is valid. Each time the network updates the TA (for example, sends the TA adjustment amount), the terminal device restarts the TimeAlignmentTimer. After the TimeAlignmentTimer expires, if the terminal device has uplink data to send, it needs to trigger random access to reacquire TA. However, in the scenario of introducing Non-Terrestrial Network (NTN, non-terrestrial communication network), the change of TA may be faster than that of the terrestrial network, so how to ensure that the network equipment can follow the change of the TA value of the terminal equipment so that the network equipment can be dispatched It is a problem that needs to be solved to be closer to the TA value of the terminal equipment instead of always using the maximum TA value supported by the system to avoid greater service transmission delay.

Summary of the invention

To solve the foregoing technical problems, embodiments of the present invention provide a TA update method, terminal equipment, network equipment, chip, computer-readable storage medium, computer program product, and computer program.

In the first aspect, a TA update method is provided, including:

The terminal device reports the first information;

Wherein, the first information is predicted or determined based on the location information of the terminal device and the ephemeris information of the network device; the first information includes: TA update auxiliary information, and/or TA value.

In the second aspect, a TA update method is provided, including:

The network device receives the first information;

In a third aspect, a terminal device is provided, including:

The first communication unit reports the first information;

In a fourth aspect, a network device is provided, including:

The second communication unit receives the first information;

In a fifth aspect, a terminal device is provided, including: a processor and a memory for storing a computer program that can run on the processor,

Wherein, the memory is used to store a computer program, and the processor is used to call and run the computer program stored in the memory to execute the steps of the aforementioned method.

In a sixth aspect, a network device is provided, including: a processor and a memory for storing a computer program that can run on the processor,

In a seventh aspect, a chip is provided, including a processor, configured to call and run a computer program from a memory, so that a device installed with the chip executes the aforementioned method.

In an eighth aspect, a computer-readable storage medium is provided, and the computer-readable storage medium is used to store a computer program that enables a computer to execute the steps of the aforementioned method.

In a ninth aspect, a computer program product is provided, including computer program instructions that cause a computer to execute the method as described above.

In a tenth aspect, a computer program is provided, which causes a computer to execute the method as described above.

By adopting the solution provided in this embodiment, the first information is predicted or determined based on the location information of the terminal device and the ephemeris information of the network device, and the first information is reported to the network device. The first information may include: TA Update auxiliary information, and/or TA value. In this way, in communication processing, especially in the NTN scenario, the network device can follow the TA changes of the terminal device, which is conducive to the subsequent dynamic scheduling, so that the network device is closer to the TA value of the terminal device during scheduling without always using system support. This can reduce the scheduling delay and avoid greater service transmission delay.

Description of the drawings

Figure 1-1 is a schematic diagram 1 of a communication system architecture provided by an embodiment of the present application;

Figure 1-2 is a schematic diagram of the comparison of scenes with and without TA;

FIG. 2 is a schematic diagram 1 of the flow of a TA update method provided by an embodiment of the present application;

FIG. 3 is a schematic diagram of the second flow of a TA update method provided by an embodiment of the present application;

FIG. 4 is a third flowchart of a TA update method provided by an embodiment of the present application;

FIG. 5 is a schematic diagram 1 of a processing scenario provided by an embodiment of the present application;

FIG. 6 is a second schematic diagram of a processing scenario provided by an embodiment of the present application;

FIG. 7 is a fourth flowchart of a TA update method provided by an embodiment of the present application;

FIG. 8 is a fifth schematic flowchart of a TA update method provided by an embodiment of the present application;

FIG. 9 is a third schematic diagram of a processing scenario provided by an embodiment of the present application;

FIG. 10 is a sixth flowchart of a TA update method provided by an embodiment of the present application;

FIG. 11 is a fourth schematic diagram of a processing scenario provided by an embodiment of the present application;

FIG. 12 is a schematic diagram of the structure of a terminal device provided by an embodiment of the present application;

FIG. 13 is a schematic diagram of the composition structure of a network device provided by an embodiment of the present application;

FIG. 14 is a schematic diagram of the composition structure of a communication device provided by an embodiment of the present invention;

FIG. 15 is a schematic block diagram of a chip provided by an embodiment of the present application;

FIG. 16 is a schematic diagram 2 of a communication system architecture provided by an embodiment of the present application.

Detailed ways

In order to understand the features and technical content of the embodiments of the present invention in more detail, the implementation of the embodiments of the present invention will be described in detail below with reference to the accompanying drawings. The accompanying drawings are for reference and explanation purposes only, and are not used to limit the embodiments of the present invention.

The technical solutions in the embodiments of the present application will be described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are a part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of this application.

The technical solutions of the embodiments of this application can be applied to various communication systems, such as: Global System of Mobile Communication (GSM) system, Code Division Multiple Access (CDMA) system, and Wideband Code Division Multiple Access (Wideband Code Division Multiple Access, WCDMA) system, General Packet Radio Service (GPRS), Long Term Evolution (LTE) system, LTE Frequency Division Duplex (FDD) system, LTE Time Division Duplex (TDD), Universal Mobile Telecommunication System (UMTS), Worldwide Interoperability for Microwave Access (WiMAX) communication system or 5G system, etc.

Exemplarily, the communication system 100 applied in the embodiment of the present application may be as shown in FIG. 1-1. The communication system 100 may include a network device 110, and the network device 110 may be a device that communicates with a UE 120 (or referred to as a communication terminal device or a terminal device). The network device 110 may provide communication coverage for a specific geographic area, and may communicate with UEs located in the coverage area. Optionally, the network equipment 110 may be a network equipment (Base Transceiver Station, BTS) in a GSM system or a CDMA system, a network equipment (NodeB, NB) in a WCDMA system, or an evolution in an LTE system Type network equipment (Evolutional Node B, eNB or eNodeB), or a wireless controller in the Cloud Radio Access Network (CRAN), or the network equipment may be a mobile switching center, a relay station, an access point, In-vehicle devices, wearable devices, hubs, switches, bridges, routers, network-side devices in 5G networks, or network devices in the future evolution of the Public Land Mobile Network (PLMN), etc.

The communication system 100 further includes at least one UE 120 located within the coverage area of the network device 110. As used herein, "UE" includes, but is not limited to, connection via wired lines, such as via public switched telephone networks (PSTN), digital subscriber lines (Digital Subscriber Line, DSL), digital cables, and direct cable connections; And/or another data connection/network; and/or via a wireless interface, such as for cellular networks, wireless local area networks (WLAN), digital TV networks such as DVB-H networks, satellite networks, AM-FM Broadcast transmitter; and/or another UE's device configured to receive/send communication signals; and/or Internet of Things (IoT) equipment. A UE set to communicate through a wireless interface may be referred to as a "wireless communication terminal device", a "wireless terminal device" or a "mobile terminal device".

Optionally, direct terminal device (D2D) communication may be performed between the UEs 120.

It should be understood that the terms "system" and "network" in this article are often used interchangeably in this article. The term "and/or" in this article is only an association relationship describing the associated objects, which means that there can be three relationships, for example, A and/or B, which can mean: A alone exists, A and B exist at the same time, exist alone B these three situations. In addition, the character "/" in this text generally indicates that the associated objects before and after are in an "or" relationship.

The embodiments provided in this application can be applied to Non Terrestrial Network (NTN, non-terrestrial communication network). Wherein, the NTN uses satellite communication to provide communication services to ground users. Compared with terrestrial cellular network communication, satellite communication has many unique advantages. First of all, satellite communication is not restricted by the user area. For example, general terrestrial communication cannot cover the ocean, mountains, deserts and other areas where network equipment cannot be installed or because of the sparse population. Satellites can cover a larger ground, and satellites can orbit the earth, so theoretically every corner of the earth can be covered by satellite communications. Secondly, satellite communication has greater social value. Satellite communication can be covered at a lower cost in remote mountainous areas, poor and backward countries or regions, so that people in these areas can enjoy advanced voice communication and mobile Internet technology, which is conducive to narrowing the digital gap with developed areas and promoting The development of these areas. Thirdly, the satellite communication distance is long, and the communication cost has not increased significantly with the increase of the communication distance; finally, the stability of satellite communication is high, and it is not restricted by natural disasters.

Communication satellites are divided into LEO (Low-Earth Orbit) satellites, MEO (Medium-Earth Orbit) satellites, GEO (Geostationary Earth Orbit, geosynchronous orbit) satellites, HEO (High Elliptical Orbit (highly elliptical orbit) satellites and so on. in,

LEO, the altitude range of low-orbit satellites is 500km-1500km, and the corresponding orbital period is about 1.5 hours to 2 hours. The signal propagation delay of single-hop communication between users is generally less than 20ms. The maximum satellite viewing time is 20 minutes. The signal propagation distance is short, the link loss is small, and the requirement for the transmission power of the user terminal is not high.

GEO is a geosynchronous orbit satellite with an orbital height of 35786km and a rotation period of 24 hours around the earth. The signal propagation delay of single-hop communication between users is generally 250ms.

In order to ensure the coverage of satellites and increase the system capacity of the entire satellite communication system, satellites use multiple beams to cover the ground. A satellite can form dozens or even hundreds of beams to cover the ground; a satellite beam can cover tens to hundreds of kilometers in diameter. Ground area.

In addition, in the related art NR terrestrial network, an important feature of uplink transmission is orthogonal multiple access in time and frequency for different terminal devices, that is, the uplink transmissions of different UEs from the same cell do not interfere with each other. In order to ensure the orthogonality of uplink transmission and avoid intra-cell interference, the gNB requires signals from different terminal devices with different frequency domain resources at the same time to arrive at the gNB to be basically aligned. In order to ensure time synchronization on the gNB side, NR supports an uplink timing advance mechanism.

The uplink clock and the downlink clock on the gNB side are the same, but there is an offset between the uplink clock and the downlink clock on the terminal device side, and different terminal devices have their own different uplink timing advances. As shown in Figure 1-2, gNB can control the time when the uplink signals from different terminal devices reach the gNB by appropriately controlling the offset of each terminal device. For the terminal equipment far away from the gNB, due to the larger transmission delay, it is necessary to send the uplink data earlier than the terminal equipment closer to the gNB.

The gNB determines the TA value of each terminal device based on measuring the uplink transmission of the terminal device. gNB sends TA commands to terminal devices in two ways:

1) Initial TA acquisition: In the random access process, the gNB determines the TA value by measuring the received preamble (preamble sequence), and sends it to the UE through the Timing Advance Command (TA command) field of the RAR.

2) Adjustment of TA in RRC connected state: Although the UE and gNB have achieved uplink synchronization during the random access process, the timing of the uplink signal reaching the gNB may change over time. Therefore, the UE needs to constantly update its uplink timing Advance the amount to keep the upstream synchronization. If the TA of a certain UE needs to be corrected, the gNB will send a Timing Advance Command to the UE, requesting it to adjust the uplink timing. The Timing Advance Command can be sent to the terminal device through the Timing Advance Command MAC CE.

In the NR terrestrial network, the TA changes between the terminal equipment and the network are small. The network uses TimeAlignmentTimer to allow the terminal equipment to maintain a valid TA, that is, during the operation of TimeAlignmentTimer (time alignment timer), the TA maintained by the terminal equipment is effective . Each time the network updates the TA (for example, sends the TA adjustment amount), the terminal device restarts the TimeAlignmentTimer. After TimeAlignmentTimer expires, if the UE has uplink data to send, it needs to trigger random access to reacquire TA. Compared with the cellular network adopted by traditional NR, the TA between UE and satellite in NTN varies greatly, especially in LEO satellite scenarios. Because TA changes too fast, TimeAlignmentTimer needs to be configured very small, requiring the network to adjust TA more frequently, which will cause greater signaling overhead.

Based on this, an embodiment of the present invention provides a timing advance (TA, Timing Advanced) update method, as shown in FIG. 2, including:

Step 21: The terminal device reports the first information;

Correspondingly, on the network device side, a timing advance TA update method is provided, as shown in Figure 3, including:

Step 31: The network device receives the first information;

The terminal device provided in this embodiment is a terminal device that can communicate in an NTN scenario; the network device may be a satellite.

In the solution of this embodiment, the terminal device can determine the TA value in combination with its own position information and the ephemeris information of the network device, and/or predict the TA update auxiliary information.

Wherein, the location information of the terminal device may be geographic location information corresponding to the current location of the terminal device, such as latitude and longitude (which may further include altitude), etc., or may be a cell identity corresponding to the location of the terminal, etc., which is not correct in this embodiment It is exhaustive. The method for the terminal device to obtain the location information may be obtained through a GPS unit installed by itself, or may be sent by a network device for it. Of course, there are other methods, which are not exhaustively listed in this embodiment.

The ephemeris information of the aforementioned network equipment may include: the ephemeris information corresponding to the satellites (network equipment) of the serving cell where the terminal equipment is located; and/or the ephemeris information corresponding to the satellites (network equipment) of the neighboring cells of the serving cell information. It should be pointed out that there may be one or more neighboring cells of the serving cell, and correspondingly, there may be one or more ephemeris information corresponding to the satellites (network equipment) of the neighboring cells of the serving cell.

The method for obtaining the ephemeris information may be: the network device of the serving cell sends to the terminal device through system broadcast; for example, the ephemeris information may be carried in the MIB or SIB. Alternatively, the network equipment of the serving cell is configured to the terminal equipment through dedicated signaling. For example, the ephemeris information can be carried in MAC CE and RRC signaling.

Specifically, the ephemeris information may be ephemeris data, also known as ephemeris, which is a table of stellar orbit parameters, that is, the list data is used to indicate the predetermined location of a stellar body at regular intervals, or every time. A certain satellite is scheduled to be located at regular intervals.

Network equipment, such as satellites, spacecraft, or flying objects, are included in the NORAD ephemeris information catalog once they enter space. Spacecraft listed in the NORAD ephemeris information number catalog will be tracked for life. The ephemeris information of the satellite uses the mathematical relationship between the six orbital parameters of Kepler's law to determine the time, coordinates, azimuth, speed and other parameters of the flying body, which has extremely high accuracy. The ephemeris information of the satellite can accurately calculate, predict, describe, and track the time, position, speed and other operating status of satellites and flying objects; it can express the precise parameters of flying objects such as celestial bodies, satellites, spacecraft, missiles, and space junk; The flying body is placed in a three-dimensional space; the past, present, and future of the celestial body are depicted three-dimensionally with time. The time of the satellite's ephemeris information is calculated according to Universal Coordinated Time (UTC). In addition, the ephemeris information of the satellite can be updated regularly. The update method can be that once the parameters are added or the parameters are adjusted, the ephemeris information can be updated accordingly; or, an update cycle can be set, such as 1 month, or 1 day, or 3 months, etc., The ephemeris information of the satellite is updated according to the update cycle. In this embodiment, the specific content included in the ephemeris information will not be further described.

Based on the foregoing, the solution of this embodiment will be specifically described below in combination with various examples:

Example 1. The terminal device makes predictions according to the position information, the moving direction and the ephemeris information of the network device, and obtains the TA update auxiliary information. When the TA update auxiliary information changes and the TA reporting prohibition timer is not running, the terminal device reports the changed TA update auxiliary information. Correspondingly, the network device determines the TA value corresponding to the terminal device according to the TA update auxiliary information.

In other words, the terminal device predicts whether the TA value changes within the first duration according to the current location information, the direction of movement within the first duration, and the ephemeris information of the network device. If it is determined that the TA value will change within the first duration If a change occurs, then the TA update auxiliary information is generated; otherwise, the TA update auxiliary information may not be generated.

The aforementioned first duration can be a duration set according to actual conditions, for example, it can be determined according to an empirical value. For example, in the NTN scenario, the TA value of most terminals will be within the duration N (units can be ms) If a change occurs, then the first duration may be less than or equal to the duration N, for example, it may be 10ms, or 20ms, etc., and the list is not exhaustive.

That is to say, when the position information of the terminal device changes, and/or the direction of movement changes, and/or the position of the satellite changes, and/or changes to use the ephemeris information of the new network device, it may cause TA Will change, that is, TA updated auxiliary information after the change will be generated. When the changed TA update auxiliary information is generated, and the TA reporting prohibition timer is not running or timing, the changed TA update auxiliary information can be reported.

In addition, the start or restart time of the aforementioned TA reporting prohibition timer may be: when the terminal device reports the changed TA update auxiliary information, the TA reporting prohibition timer is started or restarted.

The foregoing TA reporting prohibition timer may be configured by the network device for the terminal device, or may be agreed upon by the protocol.

In this example, there are two ways to determine whether the terminal device reports the TA update auxiliary information:

Manner 1: The terminal device may determine by itself whether the terminal device reports the changed TA update auxiliary information when the TA update auxiliary information changes and the TA reporting prohibition timer is not running. For example, it can be determined according to the agreement or predetermined rules.

Manner 2: It may be determined whether to report the first information based on the instruction of the network device. It may include that the terminal device receives first indication information; wherein, the first indication information is used to indicate whether the terminal device is allowed to report the TA update auxiliary information; the first indication information is carried by RRC signaling The TA update auxiliary information is carried by radio resource control RRC signaling, or carried by the medium access control MAC control element CE, or carried by the physical downlink control channel PDCCH. Correspondingly, the network device sends the first indication information to the terminal device.

That is, if the terminal device receives the first indication information in advance, and the first indication information characterizes that the terminal device is allowed to report the TA update auxiliary information, the terminal device will update the auxiliary information in the TA When a change occurs and the TA reporting prohibition timer is not running, the processing of the TA updating auxiliary information is reported to the network device.

In this example, the TA update auxiliary information includes at least one of the following: TA adjustment value, TA adjustment time interval, and TA update effective duration.

Among them, the TA adjustment value can be understood as the change value or difference between two adjacent TA values. If the TA adjustment value is a fixed value, the TA adjustment value can be understood as the TA adjustment step length.

The aforementioned TA adjustment value may be one or more, and the TA adjustment duration may also be one or more.

When the TA adjustment value is one, it can be understood that the same TA adjustment step is used to adjust the TA value each time; at this time, a TA adjustment value can correspond to one or more TA adjustment time intervals, or correspond to one TA adjustment time interval .

Respectively, when a TA adjustment value corresponds to a TA adjustment time interval, it can be considered that the same time interval is used each time the TA value is adjusted, and the TA value obtained by each adjustment can be the original TA value Add the TA adjustment value.

When one TA adjustment value corresponds to multiple TA adjustment time intervals, the time interval can be adjusted for each TA. The adjusted TA value can be the original TA value plus the TA adjustment value. The only difference from the previous case is that the adjustment time interval can be adjusted. For different.

In the case of multiple TA adjustment values, different TA adjustment values can be the same or different. For example, in TA adjustment values 1, 2, and 3, TA adjustment value 1 and TA adjustment value 3 are the same, but TA adjustment value 1 and The TA adjustment value 2 is different.

In addition, in the case of multiple TA adjustment values, multiple TA adjustment values can correspond to the same TA adjustment time interval, that is to say, for the same time interval, the TA adjustment value to be used this time will be used for adjustment. It is specifically determined that the TA value obtained by each adjustment can be the original TA value plus the TA adjustment value.

In the case of multiple TA adjustment values, multiple TA adjustment values may correspond to multiple TA adjustment time intervals, and each TA adjustment value may correspond to one TA adjustment time interval. That is to say, after each adjustment of the TA value, after the corresponding TA adjustment time interval, when the TA value is adjusted next, the next TA adjustment value is added to the original TA value to obtain the adjusted TA value.

Furthermore, in the foregoing multiple cases, the effective duration of the TA update may be combined or not.

For example, the TA update auxiliary information includes: a TA adjustment value, a TA adjustment time interval, and TA update effective duration. That is to say, within the effective duration of the TA update, after each TA adjustment time interval has elapsed, the TA adjustment value is used to adjust the TA value once until the effective duration of the TA update ends.

Alternatively, the TA update auxiliary information includes: one TA adjustment value and multiple TA adjustment time intervals. In other words, multiple TA adjustment time intervals can be executed in sequence, and after each TA adjustment time interval has elapsed, the TA adjustment value is used to adjust the TA value once until all TA adjustment time intervals are executed.

Or, the TA update auxiliary information includes: multiple TA adjustment values and one TA adjustment time interval. That is to say, the multiple TA adjustment values are arranged in the order of execution, and after each TA adjustment time interval has elapsed, the corresponding TA adjustment value is used to adjust the TA value once until the adjustment processing corresponding to all the TA adjustment values is completed.

Or, the TA update auxiliary information includes: multiple TA adjustment values, multiple TA adjustment time intervals, and TA update effective duration. In other words, multiple TA adjustment values are arranged in the order of execution, and multiple TA adjustment time intervals can be executed in order. After each TA adjustment time interval, the corresponding TA adjustment value is used to adjust the TA value once until the TA is updated. The effective duration ends.

Of course, there may be more situations. In actual use, TA updating auxiliary information is not limited to the aforementioned examples in this example, but it is not exhaustively listed here.

The TA update auxiliary information is carried by radio resource control (RRC, Radio Resource Control) signaling, or carried by a medium access control (MAC, Medium Access Control) control element (CE, Control Element), or may also be carried by a physical uplink The shared channel PUSCH is carried.

With reference to Fig. 4, taking the network device as a gNB (or understand it as a satellite) as an example, the terminal device determines the processing of reporting TA update auxiliary information based on the first indication information:

Step 41: The gNB sends first indication information to the terminal device; the first indication information is used to indicate whether the terminal device is configured to allow reporting of TA update auxiliary information. The first indication information may be carried by RRC signaling, or MAC CE, or PDCCH.

For terminal devices that are allowed to report TA update auxiliary information, the network device will also configure a TA reporting prohibition timer at the same time;

Wherein, the TA reporting prohibition timer is used to limit the frequency at which the UE reports the TA update auxiliary information. The UE starts or restarts the TA reporting prohibition timer every time it reports TA update auxiliary information (or reports changed TA update auxiliary information).

Step 42: The terminal device predicts the TA change according to its own position information, movement direction and ephemeris information, and reports TA update auxiliary information to the gNB through RRC signaling.

Step 43: The subsequent terminal device predicts that the TA update rule needs to be adjusted. For example, when the direction/position of the terminal device changes, and the TA reporting prohibition timer is not running (or the TA reporting prohibition timer expires as shown in the figure), the terminal device can The TA after triggering to report the change updates the auxiliary information and overwrites the auxiliary information sent last time.

Example 2: The terminal device determines the TA value according to the current location information and the ephemeris information of the network device.

The first information reported by the terminal device includes: the terminal device transmits the TA value on the current configured grant (CG, configured Grant) resource. Correspondingly, the network device receives the TA value transmitted by the terminal device on the CG resource.

Specifically, the solution provided in this example is that the terminal device determines the latest TA according to its own location information and ephemeris information, and reports the latest TA value when the CG (configured grant) resource is used to transmit the PUSCH under the configuration of the network. Here, the situation that causes the TA value to change can be the same as in Example 1. For example, it can be a change in the position information of the terminal device, and/or a change in the direction of movement, and/or a change in the satellite position, and/or a change in the use of new In the case of the ephemeris information of the network equipment, the TA may change.

In addition, before the terminal device reports the first information, it may further include:

The terminal device receives the third indication information sent by the network device; wherein the third indication information is used to configure CG resources and/or indicate whether the terminal device is allowed to report the TA value through the CG resource; the third The indication information is carried by RRC signaling, or by MAC CE, or by the physical downlink control channel PDCCH.

In one case, the third indication information only includes CG resources configured by the network device for the terminal device;

The terminal device can decide by itself whether to report the latest TA value. For example, according to preset rules, or alternatively, it can be stipulated by the agreement. Wherein, the preset rule may include: whether the time interval between the current TA value and the last reported TA value is greater than a preset duration threshold; if it is greater than, it is determined to report the current TA value; and/or, determine the current TA value Whether the difference between the TA value and the last reported TA value is greater than the preset difference threshold, and if it is greater, it is determined to report the current TA value.

In another case, the CG resource may be configured by other information, and the third indication information only includes an indication whether the terminal device is allowed to report the TA value through the CG resource. In this case, if the third indication information is when the terminal device is allowed to report the TA through the CG resource, the terminal device reports the TA value through the CG resource when detecting a new TA value.

Based on the foregoing description, this example may also include: the terminal device determines whether to transmit the TA value on the current CG resource according to at least one of the following:

The size of the remaining resources in the current CG resources except the data to be transmitted;

The logical channel priority corresponding to the medium access control MAC control element CE carrying the TA value.

That is to say, to determine whether to transmit the TA value on the current CG resource, there can be the following three ways:

Manner 1: Whether the size of the remaining resources other than the data to be transmitted in the current CG resources can accommodate the TA value; the TA value may refer to a MAC CE carrying the TA value (for example, it may be referred to as TA MAC CE).

For example, the terminal device can determine whether the size of the transmission block (TB) corresponding to the current CG resource can accommodate the TA value in addition to the data to be transmitted. If it cannot be accommodated, it is not sent, and if it can be accommodated, the TA value is sent on the CG resource.

Manner 2: Determine whether to transmit the TA value on the current CG resource according to the logical channel priority corresponding to the MAC CE carrying the TA value.

The priority of the logical channel corresponding to the MAC CE carrying the TA value (for example, it may be referred to as the TA MAC CE) may be determined according to a predefined manner. Among them, the predefined manner may be understood as preset according to the protocol or pre-configured by the network device for the terminal device.

The logical channel priority may include the logical channel priority corresponding to the MAC CE (TA MAC CE) carrying the TA value; in addition, it may also include the priority corresponding to other information, for example, it may include CG Confirm MAC CE (Configured Grant Confirmation MAC CE), data of logical channels other than UL-CCCH (data from any Logical Channel, except data from UL-CCCH), etc., and so on, will not be exhaustive.

The priority corresponding to each MAC CE or logical channel data can be determined according to the sequence in the logical channel priority.

In this method, the content to be transmitted to be transmitted on the CG resource can be determined according to the priority of the logical channel. For example, it can be specified that only the three contents with the highest priority of the current logical channel among all the content to be transmitted can be transmitted on the CG resource. If the TA MAC CE is not included, then the TA MAC CE is not transmitted in the CG resource, otherwise, the TA MAC CE can be transmitted in the CG resource.

Method 3: First determine the logical channel priority of the MAC CE carrying the TA value. Then, for the uplink logical channel and MAC CE that are allowed to use CG transmission, logical channel multiplexing is completed based on the priority of each logical channel and MAC CE. If other content with a priority higher than TA MAC CE has occupied the entire TB Size (size) of the CG resource, then TA MAC CE is not transmitted; if other content with a priority higher than TA MAC CE does not occupy the CG resource, that is There are remaining resources in the CG resource. At this time, the latest TA value and the data to be transmitted can be used for transmission using the CG resource.

On the basis of the aforementioned three methods, it can also include:

The terminal device determines whether there is data to be transmitted in the HARQ process corresponding to the current CG resource; if there is no data to be transmitted, it is determined not to perform uplink transmission in the current CG resource, or it is determined to transmit in the current CG resource TA value.

There are the following two processing situations:

Processing situation 1. The terminal device itself judges that if the HARQ process corresponding to the current CG resource does not have data to be transmitted, it directly determines not to perform uplink transmission in the current CG resource; or, if the HARQ process corresponding to the current CG resource does not exist For the data to be transmitted, it is determined to transmit the TA value in the current CG resource.

The terminal device may determine whether to perform uplink transmission in the current CG resource according to preset related information. For example, there may be a preset time period, and the upload can be determined within the time period; otherwise, the upload is not performed.

In the case that there is no data to be transmitted in the HARQ process corresponding to the current CG resource, the determination of whether to transmit the TA value may further include the following processing:

When the terminal device determines whether to transmit the TA value in the current CG resource, it determines whether the time interval between the current TA value and the last reported TA value is greater than the preset duration threshold, and if it is greater than, it is determined to be in the current CG resource. Transmission TA value. Among them, the preset duration threshold can be set according to actual conditions, for example, it can be greater than the time interval between two adjacent HARQ processes, and can also be less than the time interval between two adjacent HARQ processes.

And/or, when the terminal device determines whether to transmit the TA value in the current CG resource, it determines whether the difference between the current TA value and the last reported TA value is greater than the preset difference threshold, and if it is greater, then Determine to transmit the TA value in the current CG resource. Among them, the preset difference threshold value can be set according to actual conditions, for example, it can be 0.1ms, of course, it can also be other values. This is only an example, not a limitation, and is not exhaustive.

Processing case 2: The terminal device receives second indication information; the second indication information is used to indicate whether to transmit the TA value through the CG resource when there is no data to be transmitted in the HARQ process corresponding to the CG resource. The second indication information is carried by RRC signaling, or carried by MAC CE, or carried by the physical downlink control channel PDCCH.

Correspondingly, if the second indication information indicates that if the HARQ corresponding to the CG resource does not have transmission data, the TA value can not be transmitted through the CG resource.

Here, the second indication information may be pre-transmitted, and it can be considered that before the next new second indication information is received, the processing is performed in the manner indicated by the second indication information this time.

Alternatively, the second indication information may be for the current situation only, or the second indication information may also include a valid duration, so as to control that the second indication information is valid within a period of time.

When only for this situation, if there is no data to be transmitted in the HARQ process of the CG resource this time, it may be determined not to perform TA transmission according to the second indication information (or, according to the second indication information, it may be determined to perform TA transmission);

When there is a valid duration in the second indication information, the timing can be started when the second indication information is received. Before the valid duration ends, the processing will be performed according to the second indication information of this time, for example, there is no HARQ process for CG resources. If data is to be transmitted, it may be determined not to perform TA transmission according to the second indication information (or, according to the second indication information, it may be determined to perform TA transmission).

For example, if the HARQ process corresponding to the CG resource does not have any data to be transmitted, the network can further indicate through the second indication information whether the terminal device is skipping the uplink transmission (not transmitting, the benefit is to reduce interference), or the terminal device can use The CG resource reports the latest TA value. If the network configuration terminal device can use the CG resource to report the latest TA value, the latest TA value is transmitted on the CG resource.

For example, it can be considered that it is determined according to the second indication information that when the HARQ process corresponding to the CG resource does not have any pending data, the terminal device can use the CG resource to report the latest TA value in a HARQ process corresponding to the CG; see Figure 5, in TA values may be uploaded in all HARQ processes corresponding to CG.

For another example, it is determined according to the second indication information that when the HARQ process corresponding to the CG resource does not have any data to be transmitted, the terminal device does not use the CG resource to report the latest TA value in a HARQ process corresponding to the CG; see Figure 6, in the CG There is no data to be transmitted in the corresponding part of the HARQ process, and it is determined not to upload the TA value, such as some HARQ processes without an upward arrow in the figure (the 4th HARQ process and the 8th HARQ process).

With reference to Figure 7, the network device (or satellite) is used as a gNB, and the third indication information is used to indicate whether the terminal device is allowed to report the TA value through the CG resource as an example to illustrate this example:

Step 51: The gNB sends third indication information to the terminal device; for example, the gNB can configure the CG resource through RRC signaling, and/or indicate whether the UE is allowed to report the latest TA value through the CG resource.

Step 52: The terminal device calculates the latest TA value according to its own position information and ephemeris information.

Step 53: The terminal device judges whether to transmit the latest TA value on the current CG resource, and if the judgment result is yes, upload the latest TA value on the current CG resource.

Example 3 is different from Example 2 in that the way of reporting TA is different. In this example, the terminal device reports the TA value through the uplink transmission resource corresponding to the dynamically scheduled uplink transmission. Wherein, the uplink transmission resource corresponding to the dynamically scheduled uplink transmission is the physical uplink shared channel PUSCH.

Specifically, the terminal device determines the latest TA according to its own location information and ephemeris information, and reports the latest TA value through the PUSCH when the network dynamically schedules uplink transmission under the network configuration. Correspondingly, the network device receives the terminal device to receive the TA value through a dynamically scheduled uplink transmission resource (PUSCH). Here, the situation that causes the TA value to change can be the same as the foregoing example, and will not be repeated.

In this example, the method for the terminal device to determine whether to report the TA value may be:

The terminal device can decide by itself whether to report the TA value; for example, it can be determined according to preset rules or protocol regulations. For example, according to preset rules, or alternatively, it can be stipulated by the agreement. Wherein, the preset rule may include: whether the time interval between the current TA value and the last reported TA value is greater than a preset duration threshold; if it is greater than, it is determined to report the current TA value; and/or, determine the current TA value Whether the difference between the TA value and the last reported TA value is greater than the preset difference threshold, and if it is greater, it is determined to report the current TA value.

Alternatively, the manner in which the terminal device determines whether to report the TA value may be:

The terminal device determines whether to report the TA value according to the fourth instruction information sent by the network device.

That is, the network device will send fourth indication information to the terminal device; correspondingly, the terminal device receives the fourth indication information; wherein, the fourth indication information is used to indicate whether the terminal device is allowed to pass dynamic scheduling Reporting the TA value corresponding to the uplink transmission resource of the uplink transmission;

The fourth indication information is carried by RRC signaling, or carried by MAC CE, or carried by the physical downlink control channel PDCCH.

Based on the foregoing, the terminal device can also combine the following processing to further determine whether to report the TA value:

The terminal device judges whether to report the TA value in the uplink transmission resource according to at least one of the following:

The size of the remaining resources other than the data to be transmitted in the uplink transmission resources;

That is to say, in this example, to determine whether to transmit the TA value on the uplink transmission resource, there may be the following three methods:

Manner 1: Whether the size of the remaining resources in the uplink transmission resources other than the data to be transmitted can accommodate the TA value; the TA value may refer to the MAC CE carrying the TA value (for example, it may be referred to as TA MAC CE).

For example, the terminal device can determine whether the uplink transmission resource corresponding to the dynamically scheduled uplink transmission can accommodate the TA value in addition to the data to be transmitted. If it cannot be accommodated, it is not sent, and if it can be accommodated, the TA value is sent on the CG resource.

Manner 2: Determine whether to transmit the TA value on the current CG resource according to the logical channel priority corresponding to the MAC CE carrying the TA value. This part is the same as the previous example and will not be repeated here.

Method 3: First determine the logical channel priority of the MAC CE carrying the TA value. Then, for the uplink logical channel and MAC CE that are allowed to use CG transmission, logical channel multiplexing is completed based on the priority of each logical channel and MAC CE. If other content with priority higher than TA MAC CE has occupied all of the uplink transmission resources corresponding to the dynamically scheduled uplink transmission, then TA MAC CE will not be transmitted; if other content with priority higher than TA MAC CE does not occupy the dynamic scheduling For the uplink transmission resource corresponding to the uplink transmission, the latest TA value and the data to be transmitted can be used for transmission using the uplink transmission resource corresponding to the dynamically scheduled uplink transmission.

A specific implementation process of this example, referring to Figure 8, may include the following steps:

Step 61: The network device sends fourth indication information to the terminal device; the fourth indication information is used to indicate whether the UE is allowed to transmit the latest TA value through the dynamically scheduled uplink.

The fourth indication information can be semi-statically configured to the terminal device through RRC signaling; or, it can also be dynamically indicated to the terminal device through the PDCCH, that is, only for the uplink transmission that is dynamically scheduled this time.

Step 62: The terminal device calculates the latest TA value according to its own position information and ephemeris information.

Step 63: If the fourth indication information indicates that the TA value is allowed to be reported through the dynamically scheduled uplink transmission, the terminal device transmits the latest TA value together with the to-be-transmitted data to the network through the PUSCH using the dynamically scheduled uplink resource.

Specifically: the logical channel multiplexing priority of TA MAC CE is determined in a predefined manner; the terminal equipment completes the logical channel multiplexing based on the resource allocation priority of each logical channel and MAC CE. If the PUSCH resource of this transmission can accommodate TA MAC CE, the UE will use the PUSCH resource to transmit the latest TA value together with the data to be transmitted; otherwise, this PUSCH transmission will not include the latest TA value.

Finally, this example is explained in conjunction with Figure 9. If the network device instructs the terminal device to report TA through the fourth indication information, then the TA is reported in the dynamically scheduled uplink transmission; if the network device does not instruct the terminal device to report the TA value, then the terminal device is not in the corresponding The TA value is reported in the dynamically scheduled uplink transmission.

Example 4: The terminal device transmits the TA value through the uplink transmission resource used by the uplink feedback of the downlink transmission. The uplink transmission resource is at least one of the following: physical uplink control channel PUCCH, and/or, physical uplink shared channel PUSCH.

In this example, the terminal device determines the latest TA value according to its own location information and ephemeris information. Under the configuration of the network, the latest TA value is reported through the PUCCH/PUSCH during the uplink feedback of the downlink transmission.

The uplink feedback of downlink transmission includes: uplink feedback of dynamic scheduling of downlink transmission, or uplink feedback of semi-persistent scheduling of SPS downlink transmission.

The terminal device's determination of whether to send the TA value to the network device may be determined by the terminal device itself, for example, according to a preset rule, or alternatively, it may be specified by the protocol. Wherein, the preset rule may include: whether the time interval between the current TA value and the last reported TA value is greater than a preset duration threshold; if it is greater than, it is determined to report the current TA value; and/or, determine the current TA value Whether the difference between the TA value and the last reported TA value is greater than the preset difference threshold, and if it is greater, it is determined to report the current TA value.

Alternatively, the terminal device determining whether to send the TA value to the network device may be determined according to the fifth indication information sent by the network device.

Correspondingly, the terminal device receives fifth indication information; wherein the fifth indication information is used to indicate whether the terminal device is allowed to transmit the TA value through the uplink transmission resource used by the uplink feedback of the downlink transmission;

The fifth indication information is carried by RRC signaling, or carried by the medium access control MAC control element CE, or carried by the physical downlink control channel PDCCH.

If the fifth indication information characterizes that the terminal device is allowed to transmit the TA value through the uplink transmission resources used by the uplink feedback of downlink transmission, then the TA value can be sent to the network device when a new TA value is generated, otherwise it is not send.

A specific implementation process of this example, with reference to Figure 10, is described as follows:

Step 71: The network device sends fifth indication information to the terminal device.

Step 72: The terminal device calculates the latest TA value according to its own position information and ephemeris information.

Step 73: The terminal device transmits the TA value and the information to be fed back for the downlink transmission through PUCCH and/or PUSCH;

Among them, the information to be fed back for downlink transmission includes: acknowledged ACK or non-acknowledged NACK information for downlink transmission.

This step can be understood as that, if the fifth indication information characterizes that the terminal device is allowed to transmit the TA value through the uplink transmission resource used by the uplink feedback of downlink transmission, the terminal device will compare the latest TA value with the ACK to be fed back. NACK is transmitted to the network using PUCCH/PUSCH together.

In the case that the PUSCH is used to transmit the TA value, the terminal device transmitting the TA value through the uplink transmission resource used by the uplink feedback of the downlink transmission further includes:

The terminal device determines whether to report the TA value through the PUSCH according to at least one of the following:

The size of the remaining resources in the PUSCH resources except for the information to be fed back for downlink transmission;

That is to say, in this example, in the case of using PUSCH to transmit the TA value, there are the following three methods:

Manner 1: Whether the size of the remaining resources other than the data to be transmitted in the PUSCH resource can accommodate the TA value; the TA value may refer to a MAC CE carrying the TA value (for example, it may be referred to as TA MAC CE).

Method 3: First determine the logical channel priority of the MAC CE carrying the TA value. Then, for the uplink logical channel and MAC CE that are allowed to use CG transmission, logical channel multiplexing is completed based on the priority of each logical channel and MAC CE. If other content with priority higher than TA MAC CE has occupied all the PUSCH resources, then TA MAC CE is not transmitted; if other content with priority higher than TA MAC CE does not occupy the PUSCH resources, the latest TA value and uplink feedback are transmitted through PUSCH.

This example is illustrated with reference to Figure 11, when the network device instructs the terminal device to report TA, if it receives a downlink transmission (such as PDSCH), it reports the TA and uplink feedback in the PSUCH/PUCCH; the network device instructs the terminal device not to report the TA At the time, if a downlink transmission (such as PDSCH) is received, the TA is not reported in the PSUCH/PUCCH, and only the uplink feedback is sent.

Finally, it needs to be pointed out that the foregoing example 1 provided in this embodiment can be used in combination with one of examples 2, 3, and 4. For example, in some scenarios, the TA update auxiliary information can be reported first, and then the network-based device In the case where it is determined that the terminal device can report the latest TA value, one of Examples 2, 3, and 4 can be performed. Correspondingly, when the network device receives the latest TA value, the received TA value shall prevail, instead of using TA to update the TA value predicted by the auxiliary information.

It can be seen that by adopting the above solution, the first information is predicted or determined based on the location information of the terminal device and the ephemeris information of the network device, and the first information is reported to the network device. The first information may include: TA update assistance Information, and/or, TA value. In this way, in communication processing, especially in NTN scenarios, the network equipment can follow the TA changes of the terminal equipment, which is conducive to the subsequent dynamic scheduling, so that the network is closer to the TA value of the UE during scheduling instead of always using the maximum supported by the system. TA value, which can reduce scheduling delay and avoid greater service transmission delay.

The embodiment of the present invention provides a terminal device, as shown in FIG. 12, including:

The first communication unit 81 reports the first information;

Correspondingly, the network equipment, as shown in Figure 13, includes:

The second communication unit 91 receives the first information;

The following describes the solution of this embodiment in detail with reference to various examples:

Example 1,

The terminal device also includes a first processing unit 82, which performs prediction based on position information, movement direction, and ephemeris information of the network device to obtain the TA update auxiliary information. When the TA update auxiliary information changes and the TA reporting prohibition timer is not running, the terminal device reports the changed TA update auxiliary information. Correspondingly, the network device further includes a second processing unit 92, which determines the TA value corresponding to the terminal device according to the TA update auxiliary information.

In addition, the start or restart time of the aforementioned TA reporting prohibition timer may be: the first processing unit 82 of the terminal device starts or restarts when the first communication unit 81 reports the changed TA update auxiliary information The TA reporting prohibition timer.

Manner 1: The first processing unit of the terminal device may determine by itself whether the terminal device reports the changed TA update auxiliary information when the TA update auxiliary information changes and the TA reporting prohibition timer is not running.

Manner 2: It may be determined whether to report the first information based on the instruction of the network device. For example, the first communication unit of the terminal device receives first indication information; wherein the first indication information is used to indicate whether the terminal device is allowed to report the TA update auxiliary information; the first indication information is determined by The RRC signaling carrying the TA update auxiliary information is carried by the radio resource control RRC signaling, or carried by the medium access control MAC control element CE, or carried by the physical downlink control channel PDCCH.

Example 2,

The first processing unit of the terminal device determines the TA value according to the current location information and the ephemeris information of the network device.

The first communication unit of the terminal device transmits the TA value on the current configured grant (CG, configured Grant) resource. Correspondingly, the second communication unit of the network device receives the TA value transmitted by the terminal device on the CG resource.

Before the terminal device reports the first information, the first communication unit of the terminal device receives third instruction information sent by the network device; wherein, the third instruction information is used to configure CG resources, and/or , Indicating whether the terminal device is allowed to report the TA value through the CG resource; the third indication information is carried by RRC signaling, or carried by the MAC CE, or carried by the physical downlink control channel PDCCH.

The first processing unit of the terminal device decides whether to report the latest TA value by itself. For example, according to preset rules, or alternatively, it can be stipulated by the agreement. The details are the same as the previous embodiment, and will not be repeated here.

Based on the foregoing description, this example may further include: the first processing unit of the terminal device determines whether to transmit the TA value on the current CG resource according to at least one of the following:

It can also include:

The first processing unit of the terminal device determines whether there is data to be transmitted in the HARQ process corresponding to the current CG resource; if there is no data to be transmitted, it is determined not to perform uplink transmission in the current CG resource, or it is determined to be in the current CG resource. The TA value is transmitted in the current CG resource.

Example 3 is different from Example 2 in that the way of reporting TA is different. In this example, the first communication unit of the terminal device reports the TA value through the uplink transmission resource corresponding to the dynamically scheduled uplink transmission. Wherein, the uplink transmission resource corresponding to the dynamically scheduled uplink transmission is the physical uplink shared channel PUSCH.

Correspondingly, the second communication unit of the network device, the receiving terminal device receives the TA value through a dynamically scheduled uplink transmission resource (PUSCH).

The first processing unit of the terminal device determines whether to report the TA value according to the fourth instruction information sent by the network device.

That is, the second communication unit of the network device will send fourth indication information to the terminal device; correspondingly, the terminal device receives the fourth indication information; wherein, the fourth indication information is used to indicate whether to allow all The terminal equipment reports the TA value through the uplink transmission resource corresponding to the dynamically scheduled uplink transmission;

The first processing unit of the terminal device determines whether to report the TA value in the uplink transmission resource according to at least one of the following:

Example 4: The first communication unit of the terminal device transmits the TA value through the uplink transmission resource used for the uplink feedback of the downlink transmission.

The uplink transmission resource is at least one of the following: physical uplink control channel PUCCH, and/or, physical uplink shared channel PUSCH.

The first communication unit of the terminal device receives fifth indication information; wherein, the fifth indication information is used to indicate whether the terminal device is allowed to transmit the TA through the uplink transmission resource used by the uplink feedback of the downlink transmission value;

The first communication unit of the terminal device transmits the TA value and the information to be fed back for the downlink transmission through PUCCH and/or PUSCH;

In the case that the PUSCH is used to transmit the TA value, the first processing unit of the terminal device determines whether to report the TA value through the PUSCH according to at least one of the following:

It can be seen that by adopting the above solution, the first information is predicted or determined based on the location information of the terminal device and the ephemeris information of the network device, and the first information is reported to the network device. The first information may include: TA update assistance Information, and/or, TA value. In this way, in communication processing, especially in the NTN scenario, the network device can follow the TA changes of the terminal device, which is conducive to the subsequent dynamic scheduling, so that the network device is closer to the TA value of the terminal device during scheduling without always using system support. This can reduce the scheduling delay and avoid greater service transmission delay.

FIG. 14 is a schematic structural diagram of a communication device 1400 according to an embodiment of the present invention. The communication device in this embodiment may be specifically a terminal device or a network device in the foregoing embodiment. The communication device 1400 shown in FIG. 14 includes a processor 1410, and the processor 1410 can call and run a computer program from a memory to implement the method in the embodiment of the present invention.

Optionally, as shown in FIG. 14, the communication device 1400 may further include a memory 1420. The processor 1410 can call and run a computer program from the memory 1420 to implement the method in the embodiment of the present invention.

The memory 1420 may be a separate device independent of the processor 1410, or may be integrated in the processor 1410.

Optionally, as shown in FIG. 14, the communication device 1400 may further include a transceiver 1430, and the processor 1410 may control the transceiver 1430 to communicate with other devices. Specifically, it may send information or data to other devices, or receive other devices. Information or data sent by the device.

Among them, the transceiver 1430 may include a transmitter and a receiver. The transceiver 1430 may further include an antenna, and the number of antennas may be one or more.

Optionally, the communication device 1400 may specifically be a corresponding process implemented by a terminal device or a network device in the embodiment of the present invention, and for the sake of brevity, details are not described herein again.

FIG. 15 is a schematic structural diagram of a chip according to an embodiment of the present invention. The chip 1500 shown in FIG. 15 includes a processor 1510, and the processor 1510 can call and run a computer program from the memory to implement the method in the embodiment of the present invention.

Optionally, as shown in FIG. 15, the chip 1500 may further include a memory 1520. The processor 1510 can call and run a computer program from the memory 1520 to implement the method in the embodiment of the present invention.

The memory 1520 may be a separate device independent of the processor 1510, or may be integrated in the processor 1510.

Optionally, the chip 1500 may further include an input interface 1530. The processor 1510 can control the input interface 1530 to communicate with other devices or chips, and specifically, can obtain information or data sent by other devices or chips.

Optionally, the chip 1500 may further include an output interface 1540. The processor 1510 can control the output interface 1540 to communicate with other devices or chips, and specifically, can output information or data to other devices or chips.

Optionally, the chip can be applied to the corresponding process implemented by the terminal device or the network device in the embodiment of the present invention, and for the sake of brevity, it will not be repeated here.

It should be understood that the chip mentioned in the embodiment of the present invention may also be referred to as a system-on-chip, a system-on-chip, a system-on-chip, or a system-on-chip, etc.

It should be understood that the processor in the embodiment of the present invention may be an integrated circuit chip with signal processing capability. In the implementation process, the steps of the foregoing method embodiments may be completed by hardware integrated logic circuits in the processor or instructions in the form of software. The above-mentioned processor can be a general-purpose processor, a digital signal processor (Digital Signal Processor, DSP), an application specific integrated circuit (ASIC), a ready-made programmable gate array (Field Programmable Gate Array, FPGA) or other Programming logic devices, discrete gates or transistor logic devices, discrete hardware components.

It can be understood that the memory in the embodiment of the present invention may be a volatile memory or a non-volatile memory, or may include both volatile and non-volatile memory. It should be noted that the memories of the systems and methods described herein are intended to include, but are not limited to, these and any other suitable types of memories.

It should be understood that the foregoing memory is exemplary but not restrictive. For example, the memory in the embodiment of the present invention may also be static random access memory (static RAM, SRAM), dynamic random access memory (dynamic RAM, DRAM), Synchronous dynamic random access memory (synchronous DRAM, SDRAM), double data rate synchronous dynamic random access memory (double data rate SDRAM, DDR SDRAM), enhanced synchronous dynamic random access memory (enhanced SDRAM, ESDRAM), synchronous connection Dynamic random access memory (synch link DRAM, SLDRAM) and direct memory bus random access memory (Direct Rambus RAM, DR RAM) and so on. That is, the memory in the embodiments of the present invention is intended to include, but is not limited to, these and any other suitable types of memory.

FIG. 16 is a schematic block diagram of a communication system 1600 according to an embodiment of the present application. As shown in FIG. 16, the communication system 1600 includes a network device 1610 and a terminal 1620.

Wherein, the network device 1610 may be used to implement the corresponding functions implemented by the communication device in the foregoing method, and the terminal 1620 may be used to implement the corresponding functions implemented by the terminal in the foregoing method. For brevity, details are not described herein again.

The embodiment of the present invention also provides a computer-readable storage medium for storing computer programs.

Optionally, the computer-readable storage medium can be applied to the network device or satellite or terminal device in the embodiment of the present invention, and the computer program causes the computer to execute the corresponding process implemented by the network device in each method of the embodiment of the present invention, For the sake of brevity, I will not repeat them here.

The embodiment of the present invention also provides a computer program product, including computer program instructions.

Optionally, the computer program product can be applied to the network device or satellite or terminal device in the embodiment of the present invention, and the computer program instructions cause the computer to execute the corresponding process implemented by the network device in each method of the embodiment of the present invention, for It's concise, so I won't repeat it here.

The embodiment of the present invention also provides a computer program.

Optionally, the computer program can be applied to the network device or satellite or terminal device in the embodiment of the present invention. When the computer program runs on the computer, the computer can execute the network device implementation of each method in the embodiment of the present invention. For the sake of brevity, the corresponding process will not be repeated here.

A person of ordinary skill in the art may realize that the units and algorithm steps of the examples described in combination with the embodiments disclosed herein can be implemented by electronic hardware or a combination of computer software and electronic hardware. Whether these functions are executed by hardware or software depends on the specific application and design constraint conditions of the technical solution. Professionals and technicians can use different methods for each specific application to implement the described functions, but such implementation should not be considered as going beyond the scope of the present invention.

Those skilled in the art can clearly understand that, for the convenience and conciseness of description, the specific working process of the system, device and unit described above can refer to the corresponding process in the foregoing method embodiment, which will not be repeated here.

In the several embodiments provided by the present invention, it should be understood that the disclosed system, device, and method may be implemented in other ways. The units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they may be located in one place, or they may be distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the objectives of the solutions of the embodiments.

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

If the function is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer readable storage medium. Based on this understanding, the technical solution of the present invention essentially or the part that contributes to the prior art or the part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including Several instructions are used to make a computer device (which may be a personal computer, a server, or a network device, etc.) execute all or part of the steps of the methods described in the various embodiments of the present invention. The aforementioned storage media include: U disk, mobile hard disk, read-only memory (Read-Only Memory,) ROM, random access memory (Random Access Memory, RAM), magnetic disks or optical disks and other media that can store program codes. .

The above are only specific embodiments of the present invention, but the scope of protection of the present invention is not limited thereto. Any person skilled in the art can easily think of changes or substitutions within the technical scope disclosed by the present invention. It should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention should be subject to the protection scope of the claims.

Claims

A timing advance TA update method includes:

The terminal device reports the first information;

Wherein, the first information is predicted or determined based on the location information of the terminal device and the ephemeris information of the network device; the first information includes: TA update auxiliary information, and/or TA value.
The method according to claim 1, wherein the method further comprises:

The terminal device predicts according to the position information, the movement direction and the ephemeris information of the network device, and obtains the TA update auxiliary information.
The method according to claim 2, wherein the terminal device reporting the first information comprises:

When the TA update auxiliary information changes and the TA reporting prohibition timer is not running, the terminal device reports the changed TA update auxiliary information.
The method according to claim 3, wherein the method further comprises:

When the terminal device reports the changed TA update auxiliary information, start or restart the TA reporting prohibition timer.
The method according to any one of claims 2-4, wherein the TA update auxiliary information includes at least one of the following:

TA adjustment value, TA adjustment time interval, and TA update effective duration.
The method according to any one of claims 2-5, wherein the TA update assistance information is carried by radio resource control RRC signaling, or carried by a medium access control MAC control element CE.
The method according to any one of claims 2-6, wherein the method further comprises:

The terminal device receives first indication information; wherein the first indication information is used to indicate whether the terminal device is allowed to report the TA update auxiliary information;

The first indication information is carried by RRC signaling, and the TA update auxiliary information is carried by radio resource control RRC signaling, or carried by medium access control MAC control element CE, or carried by physical downlink control channel PDCCH.
The method according to any one of claims 1-7, wherein the method further comprises:

The terminal device determines the TA value according to the current location information and the ephemeris information of the network device.
The method according to claim 8, wherein the terminal device reporting the first information comprises:

The terminal device transmits the TA value on the currently configured authorized CG resource.
The method according to claim 9, wherein the terminal device transmitting the TA value on the current CG resource further comprises:

The terminal device determines whether to transmit the TA value on the current CG resource according to at least one of the following:

The size of the remaining resources in the current CG resources except the data to be transmitted;

The logical channel priority corresponding to the MAC CE carrying the TA value.
The method according to claim 10, wherein the method further comprises:

The terminal device judges whether there is data to be transmitted in the HARQ process of the hybrid automatic repeat request corresponding to the current CG resource;

If there is no data to be transmitted, it is determined not to perform uplink transmission in the current CG resource, or it is determined to transmit the TA value in the current CG resource.
The method according to claim 11, wherein the method further comprises:

The terminal device receives second indication information; the second indication information is used to indicate whether to transmit the TA value through the CG resource when there is no data to be transmitted in the HARQ process corresponding to the CG resource; wherein, the second The indication information is carried by RRC signaling, or by MAC CE, or by the physical downlink control channel PDCCH.
The method according to any one of claims 9-12, wherein the method further comprises:

The terminal device receives third indication information; where the third indication information is used to configure CG resources and/or indicates whether the terminal device is allowed to report TA values through CG resources; the third indication information is provided by RRC The signaling is carried, either by the MAC CE, or by the physical downlink control channel PDCCH.
The method according to claim 8, wherein the terminal device reporting the first information comprises:

The terminal device reports the TA value through the uplink transmission resource corresponding to the dynamically scheduled uplink transmission.
The method according to claim 14, wherein the uplink transmission resource corresponding to the dynamically scheduled uplink transmission is a physical uplink shared channel PUSCH.
The method according to claim 14 or 15, wherein the terminal device reporting the TA value through the uplink transmission resource corresponding to the dynamically scheduled uplink transmission further comprises:

The terminal device judges whether to report the TA value in the uplink transmission resource according to at least one of the following:

The size of the remaining resources excluding the data to be transmitted in the uplink transmission resources;

The logical channel priority corresponding to the medium access control MAC control element CE carrying the TA value.
The method according to any one of claims 14-16, wherein the method further comprises:

The terminal device receives fourth indication information; wherein, the fourth indication information is used to indicate whether the terminal device is allowed to report the TA value through the uplink transmission resource corresponding to the dynamically scheduled uplink transmission;

The fourth indication information is carried by RRC signaling, or carried by the medium access control MAC control element CE, or carried by the physical downlink control channel PDCCH.
The method according to claim 8, wherein the terminal device reporting the first information comprises:

The terminal device transmits the TA value through the uplink transmission resource used for the uplink feedback of the downlink transmission.
The method according to claim 18, wherein the uplink feedback of downlink transmission comprises: uplink feedback of dynamic scheduling of downlink transmission, or uplink feedback of semi-persistent scheduling of SPS downlink transmission.
The method according to claim 18 or 19, wherein the uplink transmission resource is at least one of the following: a physical uplink control channel PUCCH, and/or a physical uplink shared channel PUSCH.
The method according to claim 20, wherein the method further comprises:

The terminal device receives fifth indication information; wherein, the fifth indication information is used to indicate whether to allow the terminal device to transmit the TA value through the uplink transmission resource used by the uplink feedback of the downlink transmission;

The fifth indication information is carried by RRC signaling, or carried by the medium access control MAC control element CE, or carried by the physical downlink control channel PDCCH.
The method according to claim 21, wherein the fifth indication information further comprises: instructing the terminal equipment to report the TA value through the PUCCH and/or the physical uplink shared channel PUSCH.
The method according to claim 22, wherein the terminal device transmitting the TA value through the uplink transmission resource used by the uplink feedback of the downlink transmission comprises:

Transmitting, by the terminal device, the TA value and the information to be fed back for the downlink transmission through PUCCH and/or PUSCH;

Among them, the information to be fed back for downlink transmission includes: acknowledged ACK or non-acknowledged NACK information for downlink transmission.
The method according to claim 22, wherein, in the case that PUSCH is used to transmit the TA value, the terminal device transmitting the TA value through the uplink transmission resource used by the uplink feedback of the downlink transmission further comprises:

The terminal device determines whether to report the TA value through the PUSCH according to at least one of the following:

The size of the remaining resources in the PUSCH resources except for the information to be fed back for downlink transmission;

The logical channel priority corresponding to the medium access control MAC control element CE carrying the TA value.
A timing advance TA update method includes:

The network device receives the first information;

Wherein, the first information is predicted or determined based on the location information of the terminal device and the ephemeris information of the network device; the first information includes: TA update auxiliary information, and/or TA value.
The method of claim 25, wherein the method further comprises:

The network device determines the TA value corresponding to the terminal device according to the TA update auxiliary information.
The method according to claim 26, wherein the TA update auxiliary information includes at least one of the following:

TA adjustment value, TA adjustment time interval, and TA update effective duration.
The method according to claim 26 or 27, wherein the TA update assistance information is carried by radio resource control RRC signaling, or carried by a medium access control MAC control element CE, or carried by a physical downlink control channel PDCCH.
The method according to any one of claims 26-28, wherein the method further comprises:

The network device sends first indication information to the terminal device; wherein the first indication information is used to indicate whether the terminal device is allowed to report the TA update auxiliary information;

The first indication information is carried by RRC signaling, or carried by MAC CE, or carried by the physical downlink control channel PDCCH.
The method according to claim 25, wherein the receiving of the first information by the network device comprises:

The network device receives the TA value on the current CG resource.
The method of claim 30, wherein the method further comprises:

The network device sends second indication information to the terminal device; the second indication information is used to indicate whether to transmit the TA value through the CG resource when there is no data to be transmitted in the HARQ process corresponding to the CG resource;

Wherein, the second indication information is carried by RRC signaling, or carried by MAC CE, or carried by the physical downlink control channel PDCCH.
The method of claim 30, wherein the method further comprises:

The network device sends third indication information to the terminal device; wherein the third indication information is used to configure CG resources and/or indicates whether the terminal device is allowed to report the TA value through the CG resource; the third The indication information is carried by RRC signaling, or by MAC CE, or by the physical downlink control channel PDCCH.
The method according to claim 25, wherein the receiving of the first information by the network device comprises:

The network device receives the TA value through the uplink transmission resource corresponding to the dynamically scheduled uplink transmission.
The method according to claim 33, wherein the uplink transmission resource corresponding to the dynamically scheduled uplink transmission is a physical uplink shared channel PUSCH.
The method according to claim 33, wherein the method further comprises:

The network device sends fourth indication information to the terminal device; where the fourth indication information is used to indicate whether the terminal device is allowed to report the TA value through the uplink transmission resource corresponding to the dynamically scheduled uplink transmission;

The fourth indication information is carried by RRC signaling, or carried by the medium access control MAC control element CE, or carried by the physical downlink control channel PDCCH.
The method according to claim 25, wherein the receiving of the first information by the network device comprises:

The network device receives the TA value on the uplink transmission resource used for the uplink feedback of the downlink transmission.
The method according to claim 36, wherein the uplink feedback of downlink transmission comprises: uplink feedback of dynamic scheduling of downlink transmission, or uplink feedback of semi-persistent scheduling of SPS downlink transmission.
The method according to claim 37, wherein the uplink transmission resource is at least one of the following: a physical uplink control channel PUCCH, and/or a physical uplink shared channel PUSCH.
The method of claim 38, wherein the method further comprises:

The network device sends fifth indication information to the terminal device; wherein the fifth indication information is used to indicate whether the terminal device is allowed to transmit the TA value through the uplink transmission resource used by the uplink feedback of the downlink transmission ；

The fifth indication information is carried by RRC signaling, or carried by the medium access control MAC control element CE, or carried by the physical downlink control channel PDCCH.
The method according to claim 39, wherein the fifth indication information further comprises: instructing the terminal equipment to report the TA value through the PUCCH and/or the physical uplink shared channel PUSCH.
A terminal device, including:

The first communication unit reports the first information;

Wherein, the first information is predicted or determined based on the location information of the terminal device and the ephemeris information of the network device; the first information includes: TA update auxiliary information, and/or TA value.
The terminal device according to claim 41, wherein the terminal device further comprises:

The first processing unit performs prediction based on the position information, the movement direction and the ephemeris information of the network device, and obtains the TA update auxiliary information.
The terminal device according to claim 42, wherein the first communication unit reports the changed TA update auxiliary information when the TA update auxiliary information changes and the TA reporting prohibition timer is not running.
The terminal device according to claim 43, wherein the first processing unit starts or restarts the TA reporting prohibition timer when the first communication unit reports the changed TA update auxiliary information.
The terminal device according to any one of claims 42-44, wherein the TA update auxiliary information includes at least one of the following:

TA adjustment value, TA adjustment time interval, and TA update effective duration.
The terminal device according to any one of claims 42-45, wherein the TA update assistance information is carried by radio resource control RRC signaling or by a medium access control MAC control element CE.
The terminal device according to any one of claims 42-46, wherein the first communication unit receives first indication information; wherein the first indication information is used to indicate whether the terminal device is allowed to report the TA updates auxiliary information;

The first indication information is carried by the RRC signaling, and the TA update auxiliary information is carried by the radio resource control RRC signaling, or carried by the medium access control MAC control element CE, or carried by the physical downlink control channel PDCCH.
The terminal device according to any one of claims 41-47, wherein the terminal device further comprises:

The first processing unit determines the TA value according to the current position information and the ephemeris information of the network device.
The terminal device according to claim 48, wherein the first communication unit transmits the TA value on the currently configured authorized CG resource.
The terminal device according to claim 49, wherein the first processing unit determines whether to transmit the TA value on the current CG resource according to at least one of the following:

The size of the remaining resources in the current CG resources except the data to be transmitted;

The logical channel priority corresponding to the MAC CE carrying the TA value.
The terminal device according to claim 50, wherein the first processing unit determines whether there is data to be transmitted in the HARQ process of the hybrid automatic repeat request corresponding to the current CG resource;

If there is no data to be transmitted, it is determined not to perform uplink transmission in the current CG resource, or it is determined to transmit the TA value in the current CG resource.
The terminal device according to claim 51, wherein the first communication unit receives second indication information; the second indication information is used to indicate that there is no data to be transmitted in the HARQ process corresponding to the CG resource , Whether to transmit the TA value through the CG resource; wherein, the second indication information is carried by RRC signaling, or carried by MAC CE, or carried by the physical downlink control channel PDCCH.
The terminal device according to any one of claims 49-52, wherein the first communication unit receives third indication information; wherein, the third indication information is used to configure CG resources, and/or indicate Whether the terminal device is allowed to report the TA value through the CG resource; the third indication information is carried by RRC signaling, or carried by MAC CE, or carried by the physical downlink control channel PDCCH.
The terminal device according to claim 48, wherein the first communication unit reports the TA value through an uplink transmission resource corresponding to the dynamically scheduled uplink transmission.
The terminal device according to claim 54, wherein the uplink transmission resource corresponding to the dynamically scheduled uplink transmission is a physical uplink shared channel PUSCH.
The terminal device according to claim 54 or 55, wherein the first processing unit determines whether to report the TA value in the uplink transmission resource according to at least one of the following:

The size of the remaining resources excluding the data to be transmitted in the uplink transmission resources;

The logical channel priority corresponding to the medium access control MAC control element CE carrying the TA value.
The terminal device according to any one of claims 54-56, wherein the first communication unit receives fourth indication information; wherein, the fourth indication information is used to indicate whether to allow the terminal device to pass dynamic Reporting the TA value for the uplink transmission resource corresponding to the scheduled uplink transmission;

The fourth indication information is carried by RRC signaling, or carried by the medium access control MAC control element CE, or carried by the physical downlink control channel PDCCH.
The terminal device according to claim 48, wherein the first communication unit transmits the TA value through an uplink transmission resource used for uplink feedback of downlink transmission.
The terminal device according to claim 58, wherein the uplink feedback of downlink transmission comprises: uplink feedback of dynamic scheduling of downlink transmission, or uplink feedback of semi-persistent scheduling of SPS downlink transmission.
The terminal device according to claim 58 or 59, wherein the uplink transmission resource is at least one of the following: a physical uplink control channel PUCCH, and/or a physical uplink shared channel PUSCH.
The terminal device according to claim 60, wherein the first communication unit receives fifth indication information; wherein, the fifth indication information is used to indicate whether to allow the terminal device to pass the uplink feedback of the downlink transmission. The used uplink transmission resource transmits the TA value;

The fifth indication information is carried by RRC signaling, or carried by the medium access control MAC control element CE, or carried by the physical downlink control channel PDCCH.
The terminal device according to claim 61, wherein the fifth indication information further comprises: instructing the terminal device to report the TA value through the PUCCH and/or the physical uplink shared channel PUSCH.
The terminal device according to claim 62, wherein the first communication unit transmits the TA value and information to be fed back for the downlink transmission through PUCCH and/or PUSCH;

Among them, the information to be fed back for downlink transmission includes: acknowledged ACK or non-acknowledged NACK information for downlink transmission.
The terminal device according to claim 62, wherein the first processing unit determines whether to report the TA value through the PUSCH according to at least one of the following:

The size of the remaining resources in the PUSCH resources except for the information to be fed back for downlink transmission;

The logical channel priority corresponding to the medium access control MAC control element CE carrying the TA value.
A network device including:

The second communication unit receives the first information;

Wherein, the first information is predicted or determined based on the location information of the terminal device and the ephemeris information of the network device; the first information includes: TA update auxiliary information, and/or TA value.
The network device according to claim 65, wherein the network device further comprises:

The second processing unit determines the TA value corresponding to the terminal device according to the TA update auxiliary information.
The network device according to claim 66, wherein the TA update auxiliary information includes at least one of the following:

TA adjustment value, TA adjustment time interval, and TA update effective duration.
The network device according to claim 66 or 67, wherein the TA update auxiliary information is carried by radio resource control RRC signaling, or carried by a medium access control MAC control element CE, or carried by a physical downlink control channel PDCCH.
The network device according to any one of claims 66-68, wherein the second communication unit sends first indication information to the terminal device; wherein the first indication information is used to indicate whether to allow the The terminal device reports the TA update auxiliary information;

The first indication information is carried by RRC signaling, or carried by MAC CE, or carried by the physical downlink control channel PDCCH.
The network device according to claim 65, wherein the second communication unit receives the TA value on the current CG resource.
The network device according to claim 70, wherein the second communication unit sends second indication information to the terminal device; the second indication information is used to indicate that the HARQ process corresponding to the CG resource does not exist. In the case of data transmission, whether to transmit the TA value through CG resources;

Wherein, the second indication information is carried by RRC signaling, or carried by MAC CE, or carried by the physical downlink control channel PDCCH.
The network device according to claim 70, wherein the second communication unit sends third indication information to the terminal device; wherein the third indication information is used to configure CG resources, and/or indicate Whether the terminal device is allowed to report the TA value through the CG resource; the third indication information is carried by RRC signaling, or carried by the MAC CE, or carried by the physical downlink control channel PDCCH.
The network device according to claim 65, wherein the second communication unit receives the TA value through an uplink transmission resource corresponding to a dynamically scheduled uplink transmission.
The network device according to claim 73, wherein the uplink transmission resource corresponding to the dynamically scheduled uplink transmission is a physical uplink shared channel PUSCH.
The network device according to claim 73, wherein the second communication unit sends fourth indication information to the terminal device; wherein the fourth indication information is used to indicate whether the terminal device is allowed to pass dynamic Reporting the TA value for the uplink transmission resource corresponding to the scheduled uplink transmission;

The fourth indication information is carried by RRC signaling, or carried by the medium access control MAC control element CE, or carried by the physical downlink control channel PDCCH.
The network device according to claim 75, wherein the second communication unit receives the TA value on an uplink transmission resource used for uplink feedback of downlink transmission.
The network device according to claim 76, wherein the uplink feedback of downlink transmission comprises: uplink feedback of dynamic scheduling of downlink transmission, or uplink feedback of semi-persistent scheduling of SPS downlink transmission.
The network device according to claim 77, wherein the uplink transmission resource is at least one of the following: a physical uplink control channel PUCCH, and/or a physical uplink shared channel PUSCH.
The network device according to claim 78, wherein the second communication unit sends fifth indication information to the terminal device; wherein, the fifth indication information is used to indicate whether to allow the terminal device to pass downlink The TA value is transmitted by the uplink transmission resource used for the uplink feedback of the transmission;

The fifth indication information is carried by RRC signaling, or carried by the medium access control MAC control element CE, or carried by the physical downlink control channel PDCCH.
The network device according to claim 79, wherein the fifth indication information further comprises: instructing the terminal device to report the TA value through the PUCCH and/or the physical uplink shared channel PUSCH.
A terminal device, comprising: a processor and a memory for storing a computer program that can run on the processor, wherein the memory is used for storing the computer program, and the processor is used for calling and running the computer stored in the memory A program that executes the steps of the method according to any one of claims 1-24.
A network device includes: a processor and a memory for storing a computer program that can run on the processor, where the memory is used for storing the computer program, and the processor is used for calling and running the computer stored in the memory A program that executes the steps of the method according to any one of claims 25-40.
A chip comprising: a processor, configured to call and run a computer program from a memory, so that a device installed with the chip executes the method according to any one of claims 1-24.
A chip comprising: a processor, configured to call and run a computer program from a memory, so that a device installed with the chip executes the method according to any one of claims 25-40.
A computer-readable storage medium used to store a computer program that enables a computer to execute the steps of the method according to any one of claims 1-40.
A computer program product comprising computer program instructions that cause a computer to execute the method according to any one of claims 1-40.
A computer program that causes a computer to execute the method according to any one of claims 1-40.