WO2022120747A1

WO2022120747A1 - Wireless communication method and terminal device

Info

Publication number: WO2022120747A1
Application number: PCT/CN2020/135373
Authority: WO
Inventors: 李海涛; 胡奕
Original assignee: Oppo广东移动通信有限公司
Priority date: 2020-12-10
Filing date: 2020-12-10
Publication date: 2022-06-16
Also published as: CN116325584A

Abstract

Provided by embodiments of the present application are a wireless communication method and a terminal device. The terminal device may adjust the duration of a timer on the basis of round-trip propagation delay, and can thus meet NTN scenario requirements. The wireless communication method comprises: the terminal device starts a first timer, the first timer being used to indicate a time window in which the sending of SR is prohibited, or the first timer being used to indicate a time window in which new data cannot be sent by using a target HARQ process on CG, wherein the duration of the first timer is equal to the sum of a first duration and the round-trip propagation delay, and the first duration is a duration set by a network device for the first timer.

Description

Method and terminal device for wireless communication

technical field

The embodiments of the present application relate to the field of communication, and more particularly, to a method and terminal device for wireless communication.

Background technique

The fifth-generation mobile communication technology 5-Generation New Radio (5G NR) system defines the deployment scenarios of non-terrestrial networks (NTN) systems including satellite networks. The NTN system can realize the continuity of 5G NR services. However, in the NTN scenario, due to the movement of low-orbit satellites, the cells covered by the ground are also not fixed at the geographic location, which brings new challenges to the configuration of some timers.

SUMMARY OF THE INVENTION

Embodiments of the present application provide a wireless communication method and a terminal device. The terminal device can adjust the duration of a timer based on the round-trip propagation delay, so as to meet the requirements of an NTN scenario.

In a first aspect, a method for wireless communication is provided, the method comprising:

The terminal device starts a first timer, where the first timer is used to indicate a time window during which SR is prohibited from being sent, or, the first timer is used to indicate a time window during which new data cannot be sent using the target HARQ process on the CG;

The duration of the first timer is equal to the sum of the first duration and the round-trip propagation delay, and the first duration is the duration configured by the network device for the first timer.

In a second aspect, a terminal device is provided for executing the method in the above-mentioned first aspect.

Specifically, the terminal device includes functional modules for executing the method in the first aspect.

In a third aspect, a terminal device is provided, including a processor and a memory. 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 method in the first aspect.

In a fourth aspect, an apparatus is provided for implementing the method in the above-mentioned first aspect.

Specifically, the apparatus includes: a processor for invoking and running a computer program from a memory, so that a device in which the apparatus is installed executes the method in the above-mentioned first aspect.

In a fifth aspect, a computer-readable storage medium is provided for storing a computer program, and the computer program causes a computer to execute the method in the above-mentioned first aspect.

In a sixth aspect, a computer program product is provided, comprising computer program instructions, the computer program instructions causing a computer to perform the method of the first aspect above.

In a seventh aspect, there is provided a computer program which, when run on a computer, causes the computer to perform the method of the above-mentioned first aspect.

Through the above technical solution, the duration of the first timer is equal to the sum of the duration configured by the network device for the first timer and the round-trip propagation delay, that is, the terminal device can adjust the duration of the timer based on the round-trip propagation delay to avoid network devices Excessive signaling overhead caused by frequent reconfiguration of the duration of the first timer due to changes in the round-trip propagation delay.

Description of drawings

FIG. 1 is a schematic diagram of a communication system architecture provided by an embodiment of the present application.

FIG. 2 is a schematic flowchart of a method for wireless communication according to an embodiment of the present application.

FIG. 3 is a schematic diagram of a terminal device starting an SR prohibit timer according to an embodiment of the present application.

FIG. 4 is a schematic diagram of a terminal device starting a CG timer according to an embodiment of the present application.

FIG. 5 is a schematic block diagram of a terminal device provided according to an embodiment of the present application.

FIG. 6 is a schematic block diagram of a communication device provided according to an embodiment of the present application.

Fig. 7 is a schematic block diagram of an apparatus provided according to an embodiment of the present application.

FIG. 8 is a schematic block diagram of a communication system provided according to an embodiment of the present application.

Detailed ways

The technical solutions in the embodiments of the present application will be described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. With regard to the embodiments in the present application, all other embodiments obtained by persons of ordinary skill in the art without creative efforts shall fall within the protection scope of the present application.

The technical solutions of the embodiments of the present application can be applied to various communication systems, for example: a Global System of Mobile communication (GSM) system, a Code Division Multiple Access (CDMA) system, a wideband Code Division Multiple Access (CDMA) system (Wideband Code Division Multiple Access, WCDMA) system, General Packet Radio Service (General Packet Radio Service, GPRS), Long Term Evolution (Long Term Evolution, LTE) system, Advanced Long Term Evolution (Advanced long term evolution, LTE-A) system , New Radio (NR) system, evolution system of NR system, LTE (LTE-based access to unlicensed spectrum, LTE-U) system on unlicensed spectrum, NR (NR-based access to unlicensed spectrum) unlicensed spectrum, NR-U) system, Non-Terrestrial Networks (NTN) system, Universal Mobile Telecommunication System (UMTS), Wireless Local Area Networks (WLAN), Wireless Fidelity (Wireless Fidelity, WiFi), fifth-generation communication (5th-Generation, 5G) system or other communication systems, etc.

Generally speaking, traditional communication systems support a limited number of connections and are easy to implement. However, with the development of communication technology, mobile communication systems will not only support traditional communication, but also support, for example, Device to Device (Device to Device, D2D) communication, Machine to Machine (M2M) communication, Machine Type Communication (MTC), Vehicle to Vehicle (V2V) communication, or Vehicle to everything (V2X) communication, etc. , the embodiments of the present application can also be applied to these communication systems.

Optionally, the communication system in this embodiment of the present application may be applied to a carrier aggregation (Carrier Aggregation, CA) scenario, a dual connectivity (Dual Connectivity, DC) scenario, or a standalone (Standalone, SA) distribution. web scene.

Optionally, the communication system in the embodiment of the present application may be applied to an unlicensed spectrum, where the unlicensed spectrum may also be considered as a shared spectrum; or, the communication system in the embodiment of the present application may also be applied to a licensed spectrum, where, Licensed spectrum can also be considered unshared spectrum.

The embodiments of the present application describe various embodiments in conjunction with network equipment and terminal equipment, where the terminal equipment may also be referred to as user equipment (User Equipment, UE), access terminal, subscriber unit, subscriber station, mobile station, mobile station, remote station, remote terminal, mobile device, user terminal, terminal, wireless communication device, user agent or user device, etc.

The terminal device may be a station (STATION, ST) in the WLAN, and may be a cellular phone, a cordless phone, a Session Initiation Protocol (Session Initiation Protocol, SIP) phone, a Wireless Local Loop (WLL) station, a personal digital assistant (Personal Digital Assistant, PDA) devices, handheld devices with wireless communication capabilities, computing devices or other processing devices connected to wireless modems, in-vehicle devices, wearable devices, next-generation communication systems such as end devices in NR networks, or future Terminal equipment in the evolved public land mobile network (Public Land Mobile Network, PLMN) network, etc.

In this embodiment of the present application, the terminal device can be deployed on land, including indoor or outdoor, handheld, wearable, or vehicle-mounted; it can also be deployed on water (such as ships, etc.); it can also be deployed in the air (such as airplanes, balloons, and satellites) superior).

In this embodiment of the present application, the terminal device may be a mobile phone (Mobile Phone), a tablet computer (Pad), a computer with a wireless transceiver function, a virtual reality (Virtual Reality, VR) terminal device, and an augmented reality (Augmented Reality, AR) terminal Equipment, wireless terminal equipment in industrial control, wireless terminal equipment in self driving, wireless terminal equipment in remote medical, wireless terminal equipment in smart grid , wireless terminal equipment in transportation safety, wireless terminal equipment in smart city or wireless terminal equipment in smart home, etc.

As an example and not a limitation, in this embodiment of the present application, the terminal device may also be a wearable device. Wearable devices can also be called wearable smart devices, which are the general term for the intelligent design of daily wear and the development of wearable devices using wearable technology, such as glasses, gloves, watches, clothing and shoes. A wearable device is a portable device that is worn directly on the body or integrated into the user's clothing or accessories. Wearable device is not only a hardware device, but also realizes powerful functions through software support, data interaction, and cloud interaction. In a broad sense, wearable smart devices include full-featured, large-scale, complete or partial functions without relying on smart phones, such as smart watches or smart glasses, and only focus on a certain type of application function, which needs to cooperate with other devices such as smart phones. Use, such as all kinds of smart bracelets, smart jewelry, etc. for physical sign monitoring.

In this embodiment of the present application, the network device may be a device for communicating with a mobile device, and the network device may be an access point (Access Point, AP) in WLAN, or a base station (Base Transceiver Station, BTS) in GSM or CDMA , it can also be a base station (NodeB, NB) in WCDMA, it can also be an evolved base station (Evolutional Node B, eNB or eNodeB) in LTE, or a relay station or access point, or in-vehicle equipment, wearable devices and NR networks The network equipment or base station (gNB) in the PLMN network or the network equipment in the future evolved PLMN network or the network equipment in the NTN network, etc.

As an example and not a limitation, in this embodiment of the present application, the network device may have a mobile feature, for example, the network device may be a mobile device. Optionally, the network device may be a satellite or a balloon station. For example, the satellite may be a low earth orbit (LEO) satellite, a medium earth orbit (MEO) satellite, a geostationary earth orbit (GEO) satellite, a High Elliptical Orbit (HEO) ) satellite etc. Optionally, the network device may also be a base station set in a location such as land or water.

In this embodiment of the present application, a network device may provide services for a cell, and a terminal device communicates with the network device through transmission resources (for example, frequency domain resources, or spectrum resources) used by the cell, and the cell may be a network device ( For example, the cell corresponding to the base station), the cell can belong to the macro base station, or it can belong to the base station corresponding to the small cell (Small cell). Pico cell), Femto cell (Femto cell), etc. These small cells have the characteristics of small coverage and low transmission power, and are suitable for providing high-speed data transmission services.

Exemplarily, a communication system 100 to which this embodiment of the present application is applied is shown in FIG. 1 . The communication system 100 may include a network device 110, and the network device 110 may be a device that communicates with a terminal device 120 (or referred to as a communication terminal, a terminal). The network device 110 may provide communication coverage for a particular geographic area, and may communicate with terminal devices located within the coverage area.

FIG. 1 exemplarily shows one network device and two terminal devices. Optionally, the communication system 100 may include multiple network devices and the coverage of each network device may include other numbers of terminal devices. This application The embodiment does not limit this.

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

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

It should be understood that the terms "system" and "network" are often used interchangeably herein. The term "and/or" in this article is only an association relationship to describe the associated objects, indicating that there can be three kinds of relationships, for example, A and/or B, it can mean that A exists alone, A and B exist at the same time, and A and B exist independently B these three cases. In addition, the character "/" in this document generally indicates that the related objects are an "or" relationship.

The terms used in the embodiments of the present application are only used to explain specific embodiments of the present application, and are not intended to limit the present application. The terms "first", "second", "third" and "fourth" in the description and claims of the present application and the drawings are used to distinguish different objects, rather than to describe a specific order . Furthermore, the terms "comprising" and "having" and any variations thereof are intended to cover non-exclusive inclusion.

It should be understood that the "instruction" mentioned in the embodiments of the present application may be a direct instruction, an indirect instruction, or an associated relationship. For example, if A indicates B, it can indicate that A directly indicates B, for example, B can be obtained through A; it can also indicate that A indicates B indirectly, such as A indicates C, and B can be obtained through C; it can also indicate that there is an association between A and B relation.

In the description of the embodiments of the present application, the term "corresponding" may indicate that there is a direct or indirect corresponding relationship between the two, or may indicate that there is an associated relationship between the two, or indicate and be instructed, configure and be instructed configuration, etc.

In this embodiment of the present application, "predefinition" may be implemented by pre-saving corresponding codes, forms, or other means that can be used to indicate relevant information in devices (for example, including terminal devices and network devices). The implementation method is not limited. For example, predefined may refer to the definition in the protocol.

In the embodiments of the present application, the "protocol" may refer to a standard protocol in the communication field, for example, may include the LTE protocol, the NR protocol, and related protocols applied in future communication systems, which are not limited in this application.

For better understanding of the embodiments of the present application, the related NTNs of the present application are described.

The 5G NR system defines the deployment scenarios of NTN systems including satellite networks. NTN generally uses satellite communication to provide communication services to terrestrial users. Compared with terrestrial cellular network communication, satellite communication has many unique advantages. First of all, satellite communication is not limited by the user's geographical area. For example, general terrestrial communication cannot cover areas such as oceans, mountains, deserts, etc. where communication equipment cannot be set up or cannot be covered due to sparse population. For satellite communication, due to a single Satellites can cover a large ground, and satellites can orbit around the earth, so theoretically every corner of the earth can be covered by satellite communications. Secondly, satellite communication has great social value. Satellite communications can be covered at low cost in remote mountainous areas and poor and backward countries or regions, so that people in these regions can enjoy advanced voice communication and mobile Internet technologies, which is conducive to narrowing the digital divide with developed regions and promoting development in these areas. Thirdly, the satellite communication distance is long, and the communication cost does not increase significantly when the communication distance increases; finally, the satellite communication has high stability and is not limited by natural disasters.

Communication satellites are classified into Low-Earth Orbit (LEO) satellites, Medium-Earth Orbit (MEO) satellites, Geostationary Earth Orbit (GEO) satellites, and highly elliptical orbits according to different orbital altitudes. (High Elliptical Orbit, HEO) satellites, etc.

For example, the altitude range of LEO satellites is 500km to 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 transmit power requirements of the user terminal are not high.

For another example, the orbital altitude of the GEO satellite is 35786km, and the rotation period around the earth is 24 hours. The signal propagation delay of single-hop communication between users is generally 250ms.

For the NTN system, in order to ensure the coverage of the satellite and improve the system capacity of the entire satellite communication system, the satellite uses 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 dozens of diameters. to hundreds of kilometers of ground.

In order to better understand the embodiments of the present application, the 5G NR BSR related to the present application is described.

The terminal device enables the serving base station to know the uplink buffered data volume of the terminal device through a Buffer Status Report (BSR), so that the base station can schedule the terminal device according to the data volume information provided by the terminal device. In order to save the BSR reporting overhead, the method of packet reporting is adopted. Each uplink logical channel corresponds to a logical channel group (Logical Channel Group, LCG), and multiple uplink logical channels can correspond to the same LCG. The correspondence between logical channels (Logical Channel, LCH) and LCG is determined by the network device through wireless resources Control (Radio Resource Control, RRC) signaling configuration. The terminal device reports the BSR based on the LCG. Each terminal device in NR can support up to 8 LCGs.

Trigger conditions for BSR can include the following:

A logical channel with a higher priority of the terminal device has upstream data arriving, in this case, regular BSR (Regular BSR) will be triggered;

The padding part of the uplink resources allocated for the terminal equipment can carry the BSR Media Access Control Control Element (MAC CE) after carrying other uplink data. In this case, a padding BSR (Padding) will be issued. BSR);

When the retransmission BSR timer (retxBSR-Timer) times out, and there is currently at least one uplink logical channel for which uplink data is to be sent, the Regular BSR will be triggered;

When the periodic BSR timer (periodicBSR-Timer) times out, the periodic BSR (Periodic BSR) will be triggered.

If there are multiple logical channels that trigger a Regular BSR at the same time, each of those logical channels triggers a separate Regular BSR.

The BSR is carried through the BSR MAC CE.

If the terminal equipment triggers the Regular BSR, but the terminal equipment does not have uplink resources for transmitting new data or the uplink resources allocated to the terminal equipment for transmitting new data cannot carry the data of the uplink logical channel that triggers the Regular BSR, then The terminal device triggers a Scheduling Request (SR).

In order to better understand the embodiments of the present application, the 5G NR SR process related to the present application is described.

The terminal device applies to the network device for uplink resources through the SR. The network device does not know when the terminal device needs to send uplink data, that is, when the terminal device will send the SR. Therefore, the network device can allocate periodic physical uplink control channel (Physical Uplink Control Channel, PUCCH) resources for transmitting SR to the terminal device, and then the network device detects whether there is an SR report on the allocated SR resources.

It can be seen from the above trigger conditions of SR that the SR in NR is based on logical channels. For each uplink logical channel, the network device may choose whether to configure the PUCCH resource for transmitting the SR for the uplink logical channel. In the case that an uplink logical channel triggers an SR, if the network device configures a PUCCH resource for transmitting an SR for the uplink logical channel, the terminal device sends an SR on the PUCCH resource corresponding to the logical channel for transmitting an SR; Otherwise, the terminal device initiates random access.

The network device may configure multiple PUCCH resources for transmitting the SR for the terminal device. For an uplink logical channel, if the network device configures the PUCCH resource for SR transmission for the uplink logical channel, on each uplink bandwidth part (Band Width Part, BWP), the network device configures at most one user for the logical channel. PUCCH resource for transmitting SR.

Each PUCCH resource used to transmit SR corresponds to the following configuration parameters:

PUCCH resource period and slot/time symbol offset;

PUCCH resource index.

In order to limit the frequent sending of SR by the terminal device, the network device configures an SR-Prohibit Timer (sr-ProhibitTimer) for each SR configuration (SR configuration). For the SR configuration corresponding to the pending SR (pending SR), when the PUCCH resource satisfies the SR transmission conditions (for example, does not overlap with the measurement gap (measurement gap) and does not overlap with the Physical Uplink Shared Channel (PUSCH)), then The end device starts the sr-ProhibitTimer. During the operation of sr-ProhibitTimer, for this SR configuration, the terminal device is prohibited from sending SR, and SR can only be sent when sr-ProhibitTimer is not running (including when sr-ProhibitTimer is not started and after timeout).

To facilitate a better understanding of the embodiments of the present application, the 5G NR configuration authorization timer (Configured Grant Timer, CG timer) related to the present application is described.

In order to better serve periodic services, the concept of preconfigured resources is introduced, specifically Semi-Persistent Scheduling (SPS) (for downlink (DL)) and CG (for uplink ( Uplink, UL)). Since the maximum number of Hybrid Automatic Repeat request (HARQ) processes for the terminal device is 16, for each CG configuration, the network device configures a limited number of HARQ process numbers for it, and at time t0 The HARQ process ID of the CG resource is the same as the HARQ process ID of the CG resource at time t1. When the MAC PDU1 is packaged at time t0, the MAC PDU1 is stored in the HARQ process A. After time t1, since the HARQ process is the same, the MAC PDU1 will be flushed (flush), even if the media access control protocol data unit (Media Access Control Protocol Data Unit, MAC PDU) has not been transmitted correctly. Therefore, the mechanism of CG timer for each HARQ process is introduced. Before the CG timer times out, the MAC PDUs stored in the HARQ process cannot be flushed. Before the CG timer times out, if the network device schedules the retransmission of the HARQ process (Configured Scheduling Radio Network Temporary Identity (CS-RNTI) to schedule Dynamic Grant (DG)), Then the terminal device retransmits the MAC PDU of the HARQ process, and restarts the CG timer.

And, the CG timer will be started or restarted only when the transmission of this HARQ process is performed.

For better understanding of the embodiments of the present application, the NR HARQ mechanism related to the present application is described.

NR has two levels of retransmission mechanisms: the HARQ mechanism at the Media Access Control (MAC) layer and the Automatic Repeat reQuest (ARQ) mechanism at the Radio Link Control (RLC) layer. The retransmission of lost or erroneous data is mainly handled by the HARQ mechanism of the MAC layer, supplemented by the retransmission function of the RLC layer. The HARQ mechanism of the MAC layer can provide fast retransmission, and the ARQ mechanism of the RLC layer can provide reliable data transmission.

HARQ uses the Stop-and-Wait Protocol (Stop-and-Wait Protocol) to send data. In the stop-and-wait protocol, after the sender sends a transport block (TB), it stops and waits for an acknowledgment. In this way, the sender stops and waits for an acknowledgment after each transmission, resulting in low user throughput. Therefore, NR uses multiple parallel HARQ processes. When one HARQ process is waiting for acknowledgment information, the sender can use another HARQ process to continue sending data. These HARQ processes collectively form a HARQ entity, which incorporates a stop-and-wait protocol, allowing data to be transmitted continuously. HARQ is divided into uplink HARQ and downlink HARQ. Uplink HARQ is for uplink data transmission, and downlink HARQ is for downlink data transmission. The two are independent of each other.

Based on the provisions of the current NR protocol, the terminal has its own HARQ entity corresponding to each serving cell. Each HARQ entity maintains a set of parallel downlink HARQ processes and a set of parallel uplink HARQ processes. Currently, each uplink and downlink carrier supports a maximum of 16 HARQ processes. The base station may indicate the maximum number of HARQ processes to the terminal device through RRC signaling semi-static configuration according to the network deployment situation. If the network does not provide corresponding configuration parameters, the default number of HARQ processes in downlink is 8, and the maximum number of HARQ processes supported by each uplink carrier is always 16. Each HARQ process corresponds to a HARQ process identifier (Identity, ID). For downlink, the Broadcast Control Channel (BCCH) uses a dedicated broadcast HARQ process. For uplink, HARQ ID 0 is used for the transmission of the third message (Message3, Msg3) in the four-step random access process in the random process.

In view of the large delay of wireless signal transmission between terminals and satellites in the NTN system, 3GPP is discussing the introduction of the HARQ function to reduce the data transmission delay in the process of NTN standardization by 3GPP, and it is agreed that the HARQ process can be used to enable The configuration of enabling/disabling the HARQ function, that is, for multiple HARQ processes of a terminal, you can configure the HARQ function of some of the HARQ processes to be enabled, and the HARQ function of another part of the HARQ process to be disabled.

The HARQ feedback function of a certain HARQ process is configured to be disabled. On the one hand, the network may not wait for the uplink transmission of the receiving terminal (for uplink HARQ, it is uplink data transmission, and for downlink HARQ, the terminal is for the downlink data transmission of the HARQ. Acknowledgement (ACK)/Negative Acknowledgement (NACK) feedback) and continue to schedule the HARQ process for data transmission, thereby reducing the MAC transmission delay; on the other hand, if the network no longer schedules the HARQ process for retransmission , MAC transmission reliability will be affected.

Because different services have different Quality of Service (QoS) requirements, for example, some services are sensitive to delay, and some services have strict requirements on packet loss rate. For delay-sensitive services, you can use the HARQ function to configure the HARQ process in the disabled state for transmission, thereby reducing the transmission delay; for services that have strict requirements on the packet loss rate, you can use the HARQ function to configure the enabled state. The HARQ process is used for transmission, thereby improving transmission reliability.

In the NR terrestrial network, the signal transmission delay between the terminal equipment and the network equipment is very small, and the waiting time from the terminal equipment sending the SR to the terminal equipment receiving the uplink resources scheduled by the network equipment is generally short, so the sr-ProhibitTimer can Set to a smaller value.

Compared with the cellular network used in traditional NR, the signal propagation delay between terminal equipment and satellites in NTN is greatly increased. Therefore, when the terminal equipment has uplink data arriving, but the terminal equipment does not have uplink resources for data transmission, the terminal equipment It takes a relatively long time to receive the schedule from the network. A solution at this stage is to increase the value range of sr-ProhibitTimer to at least cover the round trip propagation delay (Round Trip Time, RTT) time in the NTN network. However, the RTT time of terminal devices in the NTN network also varies greatly (especially in the LEO scenario), which may cause the network to frequently reconfigure the value of sr-ProhibitTimer, resulting in signaling overhead and new parameters due to too long RTT. There is also a large delay in the effective time of the value. In addition, a larger value of sr-ProhibitTimer is not conducive to the precise control by the network of the time for the terminal to send the SR.

CG Timer has a similar problem. The CG Timer should also cover at least the RTT duration. For the LEO scenario (that is, the RTT time changes rapidly), if the network configuration is solely relied on, the network will be reconfigured frequently, resulting in signaling overhead.

Based on the above problems, the present application proposes a solution for a terminal device to determine the duration of a timer. The terminal device can adjust the duration of the timer based on the round-trip propagation delay, thereby meeting the requirements of NTN scenarios.

The technical solutions of the present application are described in detail below through specific embodiments.

FIG. 2 is a schematic flowchart of a method 200 for wireless communication according to an embodiment of the present application. As shown in FIG. 2 , the method 200 may include at least part of the following contents:

S210, the terminal device starts a first timer, where the first timer is used to indicate a time window during which the SR is prohibited from being sent, or, the first timer is used to indicate a time window during which the target HARQ process cannot be used to send new data on the CG; wherein, The duration of the first timer is equal to the sum of the first duration and the round-trip propagation delay, and the first duration is the duration configured by the network device for the first timer.

Optionally, the embodiments of the present application may be applied to an NTN network. Of course, the embodiments of the present application may also be applied to other networks, which are not limited in the present application.

Optionally, in the case that the first timer is used to indicate a time window for prohibiting the sending of SRs, the first timer may be, for example, an SR prohibition timer (sr-ProhibitTimer).

It should be noted that, in order to restrict the terminal device from frequently sending SRs, the network device configures an SR prohibition timer (sr-ProhibitTimer) for each SR configuration (SR configuration). For the SR configuration corresponding to the pending SR (pending SR), when the PUCCH resource meets the SR transmission conditions (for example, does not overlap with the measurement gap and does not overlap with the PUSCH), the terminal device starts the sr-ProhibitTimer. During the operation of sr-ProhibitTimer, for this SR configuration, the terminal device is prohibited from sending SR, and SR can only be sent when sr-ProhibitTimer is not running (including when sr-ProhibitTimer is not started and after timeout).

In the NTN scenario, the signal propagation delay between the terminal device and the satellite increases significantly. Therefore, when the terminal device has uplink data arriving, but the terminal device has no uplink resources for data transmission, the terminal device needs to wait for a relatively long time. to receive the scheduling of the network. For sr-ProhibitTimer, a solution at this stage is to increase the value range of sr-ProhibitTimer to at least cover the round-trip propagation delay (RTT) time in the NTN network, that is, the duration of sr-ProhibitTimer is greater than or equal to RRT, This ensures that the sr-ProhibitTimer meets the delay requirement in NTN. However, the RTT time of the terminal device in the NTN network also varies greatly (especially in the LEO scenario), which may cause the network device to frequently reconfigure the duration of the sr-ProhibitTimer, causing signaling overhead. There is also a large delay in the effective time of the newly configured sr-ProhibitTimer duration value. In addition, a larger duration value of sr-ProhibitTimer is not conducive to the precise control by the network of the time for the terminal to send the SR.

Therefore, in this embodiment of the present application, when the first timer is used to indicate a time window for prohibiting the sending of SRs, that is, when the first timer is an SR prohibition timer (sr-ProhibitTimer), the first timer The duration of the timer is equal to the sum of the duration configured by the network device for the first timer and the round-trip propagation delay, so that the terminal device can adjust the duration of the timer based on the round-trip propagation delay to avoid the network device from frequently changing the round-trip propagation delay. Excessive signaling overhead caused by reconfiguring the duration of the first timer.

Optionally, in some embodiments, in the case that the first timer is used to indicate a time window for prohibiting the sending of SRs, the above S210 may specifically be:

In the case that the SR configuration resource satisfies the SR transmission condition, the terminal device starts the first timer; or, the terminal device starts the first timer when sending an SR on the SR configuration resource; or, the terminal device starts the first timer when the SR configuration resource The first timer is started after the SR is sent on the resource.

For example, as shown in FIG. 3 , the terminal device receives the RRC configuration information sent by the network device, which includes an SR prohibition timer (sr-ProhibitTimer) (such as the duration of the sr-ProhibitTimer). In one implementation, when the network device configures the duration of the SR-ProhibitTimer (sr-ProhibitTimer), the influence of the round-trip propagation delay is not considered. For the SR configuration corresponding to the pending SR (pending SR), when the PUCCH resource meets the SR transmission conditions (for example, does not overlap with the measurement gap and does not overlap with the PUSCH), the UL LCH1 of the terminal device triggers the sending of the SR and starts the SR -ProhibitTimer, whose duration value of sr-ProhibitTimer is the sum of the duration of sr-ProhibitTimer configured by the network and the round-trip propagation delay (RTT).

Optionally, in the case that the first timer is used to indicate a time window during which the target HARQ process cannot be used to send new data on the CG, the first timer may be, for example, a CG timer (CG Timer).

It should be noted that, before the CG timer times out, the target HARQ process cannot be used to send new data. Before the CG timer times out, if the network device schedules the transmission of the target HARQ process, the terminal device uses the target HARQ process for transmission, and restarts the CG timer.

In the NTN scenario, the signal propagation delay between the terminal device and the satellite increases significantly. Therefore, when the terminal device has uplink data arriving, but the terminal device has no uplink resources for data transmission, the terminal device needs to wait for a relatively long time. to receive the scheduling of the network. For the CG timer, a solution at this stage is to increase the value range of the CG timer to at least cover the round-trip propagation delay (RTT) time in the NTN network, that is, the duration of the CG timer is greater than or equal to the RRT, so as to ensure that the CG timer The timer meets the delay requirement in NTN. However, the RTT time of the terminal device in the NTN network also varies greatly (especially in the LEO scenario), which may cause the network device to frequently reconfigure the duration value of the CG timer, resulting in signaling overhead. There is also a large delay in the effective time of the configured CG timer duration value. In addition, a larger value of the duration of the CG timer is not conducive to the precise control of the HARQ process by the network.

Therefore, in this embodiment of the present application, in the case where the first timer is used to indicate a time window within which the target HARQ process cannot be used to send new data on the CG, that is, the first timer is a CG timer (CG Timer) The duration of the first timer is equal to the sum of the duration configured by the network device for the first timer and the round-trip propagation delay, so that the terminal device can adjust the duration of the timer based on the round-trip propagation delay to prevent the network device from being caused by round-trip propagation. Excessive signaling overhead caused by frequent reconfiguration of the duration of the first timer due to changes in the delay.

Optionally, in some embodiments, when the first timer is used to indicate a time window during which new data cannot be sent using the target HARQ process on the CG, the above S210 may specifically be:

When the terminal device receives the dynamic uplink scheduling of the target HARQ process, the terminal device starts the first timer; or, when the terminal device uses the CG resource configured by the network device to transmit new data, the terminal device The device starts the first timer.

Optionally, the target HARQ process is not configured to enable HARQ or is not configured to enable HARQ feedback or is not configured to disable HARQ retransmission; or, the target HARQ process is configured to enable HARQ Either configured with HARQ feedback enabled or configured with HARQ retransmission enabled.

Optionally, the CG resource is not configured to enable HARQ or is not configured to enable HARQ feedback or is not configured to disable HARQ retransmission; or, the CG resource is configured to enable HARQ or Configured as HARQ feedback enabled or configured as HARQ retransmission enabled.

For example, as shown in FIG. 4 , the terminal device receives the RRC configuration information sent by the network device, which includes a CG timer (CG Timer) (such as the duration of the CG Timer). In an implementation, when the network device configures the duration of the CG timer (CG Timer), the influence of the round-trip propagation delay is not considered. When the terminal device starts the CG Timer corresponding to the target HARQ process (for example, when the terminal device receives the dynamic uplink scheduling of the target HARQ process, the terminal device starts the CG Timer corresponding to the target HARQ process, or when the terminal device uses the CG resource configured by the network device to transmit new data. Start the CG Timer corresponding to the target HARQ process), and the duration of the CG Timer is the sum of the duration of the CG Timer configured by the network and the round-trip propagation delay (RTT).

Optionally, in some embodiments, the terminal device may calculate the round-trip propagation delay (RTT) according to its own location information and ephemeris information.

For example, the terminal device obtains its own position information through a Global Navigation Satellite System (Global Navigation Satellite System, GNSS) capability.

Optionally, for a satellite that regenerates and forwards, the round-trip propagation delay is equal to a timing advance (Timing Advance, TA), that is, the round-trip propagation delay is equal to the current TA of the terminal device. In this case, the base station is the satellite. For example, the terminal device can obtain its own position information through the GNSS capability, and calculate the round-trip propagation delay D ₀ between the terminal device and the satellite in combination with the ephemeris information to estimate TA. In this case, TA=D ₀ .

Optionally, for a transparently relayed satellite, the round-trip propagation delay may also be equal to TA, that is, the round-trip propagation delay is equal to the current TA of the terminal device. In this case, the base station and the satellite are not the same equipment, and the feeder link round-trip delay compensation is not performed on the base station side. For example, the terminal device can obtain its own position information through the GNSS capability, and calculate the round-trip propagation delay D ₀ between the terminal device and the satellite in combination with the ephemeris information to estimate TA. In this case, TA=D ₀ .

Optionally, for a transparently relayed satellite, the round-trip propagation delay is equal to the sum of the feeder link round-trip delay and TA, that is, the round-trip propagation delay is equal to the sum of the current TA of the terminal equipment and the feeder link round-trip delay. . In this case, the base station and the satellite are not the same device, and the feeder link round-trip delay compensation (eg, common TA (common TA) delay compensation) is performed on the base station side. For example, the terminal device can obtain its own position information through the GNSS capability, and calculate the round-trip propagation delay D ₀ between the terminal device and the satellite in combination with the ephemeris information, TA=D ₀ . The round-trip delay D ₁ of the feeder link is calculated. In this case, the round-trip propagation delay = D ₀ +D ₁ .

Optionally, the feeder link round-trip delay is obtained through system information broadcast by the network device.

Therefore, in this embodiment of the present application, the duration of the first timer is equal to the sum of the duration configured by the network device for the first timer and the round-trip propagation delay, that is, the terminal device can adjust the duration of the timer based on the round-trip propagation delay , to avoid excessive signaling overhead caused by the network device frequently reconfiguring the duration of the first timer due to changes in the round-trip propagation delay.

The method embodiments of the present application are described in detail above with reference to FIGS. 2 to 4 , and the apparatus embodiments of the present application are described in detail below with reference to FIGS. 5 to 8 . It should be understood that the apparatus embodiments and the method embodiments correspond to each other, and are similar to For the description, refer to the method embodiment.

FIG. 5 shows a schematic block diagram of a terminal device 300 according to an embodiment of the present application. As shown in FIG. 5, the terminal device 300 includes:

The processing unit 310 is configured to start a first timer, where the first timer is used to indicate a time window during which the scheduling request SR is prohibited from being sent, or the first timer is used to indicate that the target hybrid automatic repeat request cannot be used on the configuration authorization CG The time window for the HARQ process to send new data;

Optionally, when the first timer is used to indicate a time window during which SR is prohibited from being sent, the processing unit 310 is specifically configured to:

When the SR configuration resource satisfies the SR transmission condition, start the first timer; or, start the first timer when sending the SR on the SR configuration resource; or start the first timer after sending the SR on the SR configuration resource timer.

Optionally, the first timer is an SR prohibit timer.

Optionally, when the first timer is used to indicate a time window during which the target HARQ process cannot be used to send new data on the CG, the processing unit 310 is specifically configured to:

Start the first timer when the terminal device receives the dynamic uplink scheduling of the target HARQ process; or start the first timer when the terminal device uses the CG resource configured by the network device to transmit new data device.

Optionally, the target HARQ process is not configured as HARQ disabled or not configured as HARQ feedback disabled or not configured as HARQ retransmission disabled; or,

The target HARQ process is configured as HARQ enabled or configured as HARQ feedback enabled or configured as HARQ retransmission enabled.

Optionally, the CG resource is not configured to enable HARQ or is not configured to enable HARQ feedback or is not configured to disable HARQ retransmission; or,

The CG resource is configured as HARQ enabled or configured as HARQ feedback enabled or configured as HARQ retransmission enabled.

Optionally, the first timer is a CG timer.

Optionally, the processing unit 310 is further configured to calculate the round-trip propagation delay according to its own position information and ephemeris information.

Optionally, for regenerative and/or transparent relay satellites, the round-trip propagation delay is equal to the timing advance TA.

Optionally, for a transparently relayed satellite, the round-trip propagation delay is equal to the sum of the round-trip delay of the TA and the feeder link.

Optionally, the terminal device is applied to the non-terrestrial communication network NTN.

Optionally, in some embodiments, the above-mentioned processing unit may be one or more processors.

It should be understood that the terminal device 300 according to the embodiment of the present application may correspond to the terminal device in the method embodiment of the present application, and the above-mentioned and other operations and/or functions of the various units in the terminal device 300 are respectively for realizing the method shown in FIG. 2 . The corresponding process of the terminal device in 200 is not repeated here for brevity.

FIG. 6 is a schematic structural diagram of a communication device 400 provided by an embodiment of the present application. The communication device 400 shown in FIG. 6 includes a processor 410, and the processor 410 can call and run a computer program from a memory, so as to implement the method in the embodiment of the present application.

Optionally, as shown in FIG. 6 , the communication device 400 may further include a memory 420 . The processor 410 may call and run a computer program from the memory 420 to implement the methods in the embodiments of the present application.

The memory 420 may be a separate device independent of the processor 410 , or may be integrated in the processor 410 .

Optionally, as shown in FIG. 6 , the communication device 400 may further include a transceiver 430, and the processor 410 may control the transceiver 430 to communicate with other devices, specifically, may send information or data to other devices, or receive other devices Information or data sent by a device.

Among them, the transceiver 430 may include a transmitter and a receiver. The transceiver 430 may further include antennas, and the number of the antennas may be one or more.

Optionally, the communication device 400 may specifically be the network device in this embodiment of the present application, and the communication device 400 may implement the corresponding processes implemented by the network device in each method in the embodiment of the present application. For the sake of brevity, details are not repeated here. .

Optionally, the communication device 400 may specifically be a terminal device in this embodiment of the present application, and the communication device 400 may implement the corresponding processes implemented by the terminal device in each method in the embodiment of the present application. For the sake of brevity, details are not repeated here. .

FIG. 7 is a schematic structural diagram of an apparatus according to an embodiment of the present application. The apparatus 500 shown in FIG. 7 includes a processor 510, and the processor 510 can call and run a computer program from a memory, so as to implement the method in this embodiment of the present application.

Optionally, as shown in FIG. 7 , the apparatus 500 may further include a memory 520 . The processor 510 may call and run a computer program from the memory 520 to implement the methods in the embodiments of the present application.

The memory 520 may be a separate device independent of the processor 510 , or may be integrated in the processor 510 .

Optionally, the apparatus 500 may further include an input interface 530 . The processor 510 may control the input interface 530 to communicate with other devices or chips, and specifically, may acquire information or data sent by other devices or chips.

Optionally, the apparatus 500 may further include an output interface 540 . The processor 510 may control the output interface 540 to communicate with other devices or chips, and specifically, may output information or data to other devices or chips.

Optionally, the apparatus can be applied to the network equipment in the embodiments of the present application, and the apparatus can implement the corresponding processes implemented by the network equipment in the various methods of the embodiments of the present application, which are not repeated here for brevity.

Optionally, the apparatus may be applied to the terminal equipment in the embodiments of the present application, and the apparatus may implement the corresponding processes implemented by the terminal equipment in each method of the embodiments of the present application, which will not be repeated here for brevity.

Optionally, the device mentioned in the embodiment of the present application may also be a chip. For example, it can be a system-on-chip, a system-on-a-chip, a system-on-a-chip, or a system-on-a-chip.

FIG. 8 is a schematic block diagram of a communication system 600 provided by an embodiment of the present application. As shown in FIG. 8 , the communication system 600 includes a terminal device 610 and a network device 620 .

The terminal device 610 can be used to implement the corresponding functions implemented by the terminal device in the above method, and the network device 620 can be used to implement the corresponding functions implemented by the network device in the above method. For brevity, details are not repeated here. .

It should be understood that the processor in this embodiment of the present application may be an integrated circuit chip, which has a signal processing capability. In the implementation process, each step of the above method embodiments may be completed by a hardware integrated logic circuit in a processor or an instruction 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 (Application Specific Integrated Circuit, ASIC), an off-the-shelf programmable gate array (Field Programmable Gate Array, FPGA) or other available Programming logic devices, discrete gate or transistor logic devices, discrete hardware components. The methods, steps, and logic block diagrams disclosed in the embodiments of this application can be implemented or executed. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like. The steps of the method disclosed in conjunction with the embodiments of the present application may be directly embodied as executed by a hardware decoding processor, or executed by a combination of hardware and software modules in the decoding processor. The software modules may be located in random access memory, flash memory, read-only memory, programmable read-only memory or electrically erasable programmable memory, registers and other storage media mature in the art. The storage medium is located in the memory, and the processor reads the information in the memory, and completes the steps of the above method in combination with its hardware.

It can be understood that the memory in this embodiment of the present application may be a volatile memory or a non-volatile memory, or may include both volatile and non-volatile memory. Wherein, the non-volatile memory may be a read-only memory (Read-Only Memory, ROM), a programmable read-only memory (Programmable ROM, PROM), an erasable programmable read-only memory (Erasable PROM, EPROM), an electrically programmable read-only memory (Erasable PROM, EPROM). Erase programmable read-only memory (Electrically EPROM, EEPROM) or flash memory. Volatile memory may be Random Access Memory (RAM), which acts as an external cache. By way of illustration and not limitation, many forms of RAM are available, such as Static RAM (SRAM), Dynamic RAM (DRAM), 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 link dynamic random access memory (Synchlink DRAM, SLDRAM) ) and direct memory bus random access memory (Direct Rambus RAM, DR RAM). It should be noted that the memory of the systems and methods described herein is intended to include, but not be limited to, these and any other suitable types of memory.

It should be understood that the above memory is an example but not a limitative description, for example, the memory in the embodiment of the present application may also be a static random access memory (static RAM, SRAM), a 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 application is intended to include but not limited to these and any other suitable types of memory.

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

Optionally, the computer-readable storage medium can be applied to the network device in the embodiments of the present application, and the computer program enables the computer to execute the corresponding processes implemented by the network device in the various methods of the embodiments of the present application. For brevity, here No longer.

Optionally, the computer-readable storage medium can be applied to the terminal device in the embodiments of the present application, and the computer program enables the computer to execute the corresponding processes implemented by the terminal device in each method of the embodiments of the present application. For brevity, here No longer.

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

Optionally, the computer program product can be applied to the network device in the embodiments of the present application, and the computer program instructions cause the computer to execute the corresponding processes implemented by the network device in each method of the embodiments of the present application. Repeat.

Optionally, the computer program product can be applied to the terminal device in the embodiments of the present application, and the computer program instructions cause the computer to execute the corresponding processes implemented by the terminal device in each method of the embodiments of the present application. Repeat.

The embodiments of the present application also provide a computer program.

Optionally, the computer program can be applied to the network device in the embodiments of the present application. When the computer program is run on the computer, it causes the computer to execute the corresponding processes implemented by the network device in each method of the embodiments of the present application. For the sake of brevity. , and will not be repeated here.

Optionally, the computer program may be applied to the terminal device in the embodiments of the present application, and when the computer program runs on the computer, the computer executes the corresponding processes implemented by the terminal device in the various methods of the embodiments of the present application, for the sake of brevity. , and will not be repeated here.

Those of ordinary skill in the art can realize that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Skilled artisans may implement the described functionality using different methods for each particular application, but such implementations should not be considered beyond the scope of this application.

Those skilled in the art can clearly understand that, for the convenience and brevity of description, the specific working process of the above-described systems, devices and units may refer to the corresponding processes in the foregoing method embodiments, which will not be repeated here.

In the several embodiments provided in this application, it should be understood that the disclosed system, apparatus and method may be implemented in other manners. For example, the apparatus embodiments described above are only illustrative. For example, the division of the units is only a logical function division. In actual implementation, there may be other division methods. For example, multiple units or components may be combined or Can be integrated into another system, or some features can be ignored, or not implemented. On the other hand, the shown or discussed mutual coupling or direct coupling or communication connection may be through some interfaces, indirect coupling or communication connection of devices or units, and may be in electrical, mechanical or other forms.

The units described as separate components may or may not be physically separated, and components displayed as units may or may not be physical units, that is, may be located in one place, or may be distributed to multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution in this embodiment.

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

The functions, if implemented in the form of software functional units and sold or used as independent products, may be stored in a computer-readable storage medium. For such understanding, the technical solution of the present application can be embodied in the form of a software product in essence, or the part that contributes to the prior art or the part of the technical solution. The computer software product is stored in a storage medium, including Several instructions are used to cause a computer device (which may be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of the present application. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (Read-Only Memory, ROM), random access memory (Random Access Memory, RAM), magnetic disk or optical disk and other media that can store program codes .

The above are only specific embodiments of the present application, but the protection scope of the present application is not limited to this. should be covered within the scope of protection of this application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

A method of wireless communication, comprising:

The terminal device starts a first timer, where the first timer is used to indicate the time window during which the scheduling request SR is prohibited to be sent, or the first timer is used to indicate that the target HARQ process cannot be used on the configuration authorized CG Time window for sending new data;

The duration of the first timer is equal to the sum of the first duration and the round-trip propagation delay, and the first duration is the duration configured by the network device for the first timer.
The method according to claim 1, wherein, when the first timer is used to indicate a time window in which SR is prohibited from being sent, the terminal device starts the first timer, comprising:

In the case that the SR configuration resource satisfies the SR transmission condition, the terminal device starts the first timer; or, the terminal device starts the first timer when sending the SR on the SR configuration resource; or, the The terminal device starts the first timer after sending the SR on the SR configuration resource.
The method of claim 2, wherein the first timer is an SR disable timer.
The method according to claim 1, wherein when the first timer is used to indicate a time window in which the target HARQ process cannot be used to send new data on the CG, the terminal device starts the first timer, include:

When the terminal device receives the dynamic uplink scheduling of the target HARQ process, the terminal device starts the first timer; or, when the terminal device uses the CG resource configured by the network device to transmit new data In this case, the terminal device starts the first timer.
The method of claim 4, wherein:

The target HARQ process is not configured as HARQ disabled or not configured as HARQ feedback disabled or not configured as HARQ retransmission disabled; or,

The target HARQ process is configured as HARQ enabled or configured as HARQ feedback enabled or configured as HARQ retransmission enabled.
The method of claim 4, wherein:

The CG resource is not configured to enable HARQ or is not configured to enable HARQ feedback or is not configured to disable HARQ retransmission; or,

The CG resource is configured as HARQ enabled or configured as HARQ feedback enabled or configured as HARQ retransmission enabled.
The method according to any one of claims 4 to 6, wherein the first timer is a CG timer.
The method according to any one of claims 1 to 7, wherein the method further comprises:

The terminal device calculates the round-trip propagation delay according to its own position information and ephemeris information.
The method of any one of claims 1 to 8, wherein,

For regenerative and/or transparent relay satellites, the round-trip propagation delay is equal to the timing advance TA.
The method of any one of claims 1 to 8, wherein,

For a transparently relayed satellite, the round-trip propagation delay is equal to the sum of the round-trip delay of the TA and the feeder link.
The method of claim 10, wherein the feeder link round-trip delay is obtained through system information broadcast by a network device.
The method according to any one of claims 1 to 11, characterized in that the method is applied to a non-terrestrial communication network NTN.
A terminal device, characterized in that it includes:

a processing unit, configured to start a first timer, where the first timer is used to indicate a time window during which the scheduling request SR is prohibited from being sent, or the first timer is used to indicate that the target hybrid automatic retransmission cannot be used on the configuration authorization CG The time window for requesting the HARQ process to send new data;

The duration of the first timer is equal to the sum of the first duration and the round-trip propagation delay, and the first duration is the duration configured by the network device for the first timer.
The terminal device according to claim 13, wherein, when the first timer is used to indicate a time window during which SR transmission is prohibited, the processing unit is specifically configured to:

In the case that the SR configuration resource satisfies the SR transmission condition, the first timer is started; or, the first timer is started when the SR is sent on the SR configuration resource; or the first timer is started after the SR is sent on the SR configuration resource. Describe the first timer.
The terminal device according to claim 14, wherein the first timer is an SR prohibit timer.
The terminal device according to claim 13, wherein, when the first timer is used to indicate a time window during which the target HARQ process cannot be used to send new data on the CG, the processing unit is specifically configured to:

Start the first timer when the terminal equipment receives the dynamic uplink scheduling of the target HARQ process; or start the first timer when the terminal equipment transmits new data by using the CG resources configured by the network equipment the first timer.
The terminal device according to claim 16, wherein,

The target HARQ process is not configured as HARQ disabled or not configured as HARQ feedback disabled or not configured as HARQ retransmission disabled; or,

The target HARQ process is configured as HARQ enabled or configured as HARQ feedback enabled or configured as HARQ retransmission enabled.
The terminal device according to claim 16, wherein,

The CG resource is not configured to enable HARQ or is not configured to enable HARQ feedback or is not configured to disable HARQ retransmission; or,

The CG resource is configured as HARQ enabled or configured as HARQ feedback enabled or configured as HARQ retransmission enabled.
The terminal device according to any one of claims 16 to 18, wherein the first timer is a CG timer.
The terminal device according to any one of claims 13 to 19, wherein the processing unit is further configured to calculate the round-trip propagation delay according to its own position information and ephemeris information.
The terminal device according to any one of claims 13 to 20, wherein,

For regenerative and/or transparent relay satellites, the round-trip propagation delay is equal to the timing advance TA.
The terminal device according to any one of claims 13 to 20, wherein,

For a transparently relayed satellite, the round-trip propagation delay is equal to the sum of the round-trip delay of the TA and the feeder link.
The terminal device according to claim 22, wherein the round-trip delay of the feeder link is obtained through system information broadcast by the network device.
The terminal device according to any one of claims 13 to 23, wherein the terminal device is applied to a non-terrestrial communication network NTN.
A terminal device, characterized in that it comprises: a processor and a memory, the memory is used to store a computer program, the processor is used to call and run the computer program stored in the memory, and execute any one of claims 1 to 12. one of the methods described.
A chip, characterized by comprising: a processor for calling and running a computer program from a memory, so that a device installed with the chip executes the method according to any one of claims 1 to 12.
A computer-readable storage medium, characterized by being used for storing a computer program, the computer program causing a computer to execute the method according to any one of claims 1 to 12.
A computer program product comprising computer program instructions, the computer program instructions causing a computer to perform the method of any one of claims 1 to 12.
A computer program, characterized in that the computer program causes a computer to perform the method according to any one of claims 1 to 12.