CN114642028A

CN114642028A - Information processing method, device, equipment and storage medium

Info

Publication number: CN114642028A
Application number: CN202080077387.4A
Authority: CN
Inventors: 付喆
Original assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Current assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Priority date: 2020-01-19
Filing date: 2020-01-19
Publication date: 2022-06-17
Anticipated expiration: 2040-01-19
Also published as: CN114642028B; WO2021142824A1

Abstract

The embodiment of the application provides an information processing method, an information processing device, information processing equipment and a storage medium, wherein the method comprises the following steps: when the downlink HARQ feedback function and the HARQ retransmission function are both closed, the network equipment determines the configuration information of the RLC reassembly timer corresponding to the RLC mode according to the RLC mode of the RLC entity and sends the configuration information to the terminal equipment, or the terminal equipment determines the configuration information of the RLC reassembly timer corresponding to the RLC mode according to the RLC mode of the RLC entity, so that the terminal equipment can determine the timer information of the RLC reassembly timer. According to the technical scheme, the timer information of the RLC recombination timer at the terminal equipment side can be better matched with the change of the signal transmission time delay between the terminal equipment and the network equipment, the phenomenon that the RLC recombination timer loses packets or retransmits due to early or late caused by improper time length configuration is avoided, and the service experience of a user is improved.

Description

Information processing method, device, equipment and storage medium

Technical Field

The present application relates to the field of communications technologies, and in particular, to an information processing method, apparatus, device, and storage medium.

Background

In a 5G New Radio (5G NR) system, reliable transmission of data is achieved between a network and a terminal device through a retransmission mechanism. In the downlink radio link control process, the network semi-statically configures a Radio Link Control (RLC) reassembly timer for the terminal to control the timing of RLC packet loss or RLC retransmission performed by the terminal device.

At present, in a non-terrestrial communication network (NTN) of NR, since a signal propagation delay between a terminal device and a satellite is greatly increased, a mode of turning off a hybrid automatic repeat request (HARQ) feedback function and turning off a HARQ retransmission function is developed to reduce a data transmission delay, and when a network device does not support blind scheduling retransmission, transmission reliability may be ensured by a mode of statically configuring an RLC reassembly timer by the network device.

However, in a non-geosynchronous orbit (GEO) scenario of the NTN, because a time delay between the terminal device and the network device changes constantly, a manner of statically configuring the RLC reassembly timer cannot adapt to the time delay change between the terminal device and the network device well, and a phenomenon of performing RLC packet loss or RLC retransmission too early or too late due to improper time length configuration of the RLC reassembly timer may occur, thereby reducing poor user service experience.

Disclosure of Invention

Embodiments of the present application provide an information processing method, an apparatus, a device, and a storage medium, which are used to solve a problem that a user service experience is poor due to an RLC packet loss or an RLC retransmission executed too early or too late when a duration configuration of an RLC reassembly timer at a terminal side is inappropriate.

In a first aspect, the present application provides an information processing method, including:

when the HARQ feedback function and the HAQR retransmission function of the downlink hybrid automatic repeat request are both closed, the terminal equipment determines the RLC mode of the RLC entity controlled by the wireless link;

the terminal equipment acquires configuration information of an RLC recombination timer which is configured by network equipment and corresponds to the RLC mode;

and the terminal equipment determines the timer information of the RLC reassembly timer according to the configuration information of the RLC reassembly timer.

In a second aspect, the present application provides an information processing method, including:

when the HARQ feedback function and the HAQR retransmission function of the downlink hybrid automatic repeat request are both closed, the network equipment determines the RLC mode of the RLC entity controlled by the radio link;

the network equipment determines configuration information of an RLC recombination timer corresponding to the RLC mode according to the RLC mode of the RLC entity;

and the network equipment sends the configuration information of the RLC reassembly timer to the terminal equipment.

In a third aspect, the present application provides an information processing method, including:

the terminal equipment determines configuration information of an RLC recombination timer corresponding to the RLC mode according to the RLC mode of the RLC entity;

and the terminal equipment determines the timer information of the RLC recombination timer according to the configuration information of the RLC recombination timer.

In a fourth aspect, the present application provides an information processing apparatus comprising: the device comprises an acquisition module and a processing module;

the processing module is used for determining the RLC mode of the radio link control RLC entity when the HARQ feedback function and the HAQR retransmission function of the downlink hybrid automatic repeat request are both closed;

the acquiring module is used for acquiring configuration information of an RLC recombination timer which is configured by network equipment and corresponds to the RLC mode;

the processing module is further configured to determine timer information of the RLC reassembly timer according to the configuration information of the RLC reassembly timer.

In a fifth aspect, the present application provides an information processing apparatus comprising: the device comprises a processing module and a sending module;

the processing module is used for determining an RLC mode of a Radio Link Control (RLC) entity when a downlink hybrid automatic repeat request (HARQ) feedback function and an HARQ retransmission function are both closed, and determining configuration information of an RLC reassembly timer at a terminal equipment side according to the RLC mode of the RLC entity;

and the sending module is used for sending the configuration information of the RLC reassembly timer to the terminal equipment.

In a sixth aspect, the present application provides an information processing apparatus comprising: a determining module and a processing module;

the determining module is used for determining the RLC mode of the radio link control RLC entity when the feedback function of the downlink hybrid automatic repeat request HARQ and the HARQ retransmission function are both closed;

the processing module is configured to determine configuration information of an RLC reassembly timer corresponding to the RLC mode according to the RLC mode of the RLC entity, and determine timer information of the RLC reassembly timer according to the configuration information of the RLC reassembly timer.

In a seventh aspect, an embodiment of the present application provides a terminal device, including:

a processor, a memory, a receiver, and an interface to communicate with a network device;

the memory stores computer execution instructions;

the processor executes computer-executable instructions stored by the memory, causing the processor to perform the method of the first aspect as described above.

Alternatively, the processor may be a chip.

In an eighth aspect, an embodiment of the present application provides a network device, including:

a processor, a memory, a transmitter, and an interface for communicating with a terminal device;

the memory stores computer-executable instructions;

the processor executes computer-executable instructions stored by the memory, causing the processor to perform the method of the second aspect as described above.

Alternatively, the processor may be a chip.

In a ninth aspect, an embodiment of the present application provides a terminal device, including: a processor, a memory and computer program instructions stored on the memory and executable on the processor, the processor implementing the method as described in the third aspect above when executing the computer program instructions.

Alternatively, the processor may be a chip.

In a tenth aspect, embodiments of the present application provide a computer-readable storage medium, in which computer-executable instructions are stored, and when the computer-executable instructions are executed by a processor, the computer-readable storage medium is configured to implement the method according to the first aspect.

In an eleventh aspect, embodiments of the present application provide a computer-readable storage medium, in which computer-executable instructions are stored, and when the computer-executable instructions are executed by a processor, the computer-readable storage medium is configured to implement the method according to the second aspect.

In a twelfth aspect, embodiments of the present application provide a computer-readable storage medium, in which computer-executable instructions are stored, and when the computer-executable instructions are executed by a processor, the computer-readable storage medium is configured to implement the method according to the third aspect.

In a thirteenth aspect, an embodiment of the present application provides a program, which when executed by a processor, is configured to perform the method according to the first aspect.

In a fourteenth aspect, an embodiment of the present application provides a program, which when executed by a processor, is configured to perform the method according to the second aspect.

In a fifteenth aspect, an embodiment of the present application provides a program, which when executed by a processor, is configured to perform the method according to the third aspect.

In a sixteenth aspect, embodiments of the present application provide a computer program product comprising program instructions for implementing the method according to the first aspect.

In a seventeenth aspect, the present application provides a computer program product, including program instructions for implementing the method according to the second aspect.

In an eighteenth aspect, embodiments of the present application provide a computer program product, which includes program instructions for implementing the method according to the third aspect.

In a nineteenth aspect, an embodiment of the present application provides a chip, including: a processing module capable of performing the method of the first aspect is interfaced with the communication.

Further, the chip further comprises a storage module (e.g., a memory) for storing instructions, the processing module is for executing the instructions stored by the storage module, and the execution of the instructions stored in the storage module causes the processing module to execute the method according to the first aspect.

In a twentieth aspect, an embodiment of the present application provides a chip, including: a processing module capable of performing the method of the second aspect is interfaced with the communication.

Further, the chip further comprises a storage module (e.g., a memory) for storing instructions, a processing module for executing the instructions stored in the storage module, and execution of the instructions stored in the storage module causes the processing module to execute the method according to the second aspect.

In a twenty-first aspect, an embodiment of the present application provides a chip, including: a processing module is interfaced with the communication, the processing module being capable of performing the method of the third aspect.

Further, the chip further comprises a storage module (e.g., a memory) for storing instructions, the processing module is for executing the instructions stored by the storage module, and the execution of the instructions stored in the storage module causes the processing module to execute the method according to the third aspect.

A twenty-second aspect of the present application provides a communication system comprising: network equipment and terminal equipment;

the terminal device is the apparatus according to the fourth aspect or the apparatus according to the sixth aspect, and the network device is the apparatus according to the fifth aspect.

When the downlink HARQ feedback function and the HARQ retransmission function are both turned off and the RLC mode of the RLC entity is determined, an implementation manner of the information processing method, the apparatus, the device, and the storage medium provided in the embodiment of the present application is that the network device determines configuration information of an RLC reassembly timer corresponding to the RLC mode according to the RLC mode of the RLC entity, and sends the configuration information to the terminal device, so that the terminal device determines timer information of the RLC reassembly timer according to an instruction of the network device; the other implementation manner is that the terminal equipment determines configuration information of an RLC reassembly timer corresponding to an RLC mode according to the RLC mode of the RLC entity, and determines timer information of the RLC reassembly timer, and both the implementation manners can enable the timer information of the RLC reassembly timer at the terminal equipment side to better match changes of signal transmission delay between the terminal equipment and network equipment, so that premature or late RLC packet loss or RLC retransmission caused by improper time length configuration of the RLC reassembly timer is avoided, and service experience of a user is improved.

Drawings

Fig. 1 is a schematic structural diagram of a communication system according to an embodiment of the present application;

fig. 2 is an interaction diagram of a first embodiment of an information transmission method provided in the present application;

FIG. 3 is a diagram illustrating a terminal device maintaining and using an RLC reassembly timer according to its initial duration, adjustment period, and adjustment step size;

FIG. 4 is a diagram illustrating the terminal device maintaining and RLC reassembly timers according to their durations;

fig. 5 is a schematic flowchart of a second embodiment of an information processing method provided in the present application;

fig. 6 is a schematic flowchart of a third embodiment of an information processing method provided in the present application;

fig. 7 is a schematic diagram illustrating that the signal transmission delay between the terminal device and the network device gradually increases;

fig. 8 is a schematic diagram illustrating that the signal transmission delay between the terminal device and the network device becomes gradually smaller;

fig. 9 is a schematic diagram of a signal transmission delay between a terminal device and a network device becoming smaller and larger;

FIG. 10 is a schematic structural diagram of a first embodiment of an information processing apparatus according to the present application;

fig. 11 is a schematic structural diagram of a second embodiment of an information processing apparatus provided in the present application;

fig. 12 is a schematic structural diagram of a third embodiment of an information processing apparatus provided in the present application;

fig. 13 is a schematic structural diagram of an embodiment of a network device provided in the present application;

fig. 14 is a schematic structural diagram of a first terminal device according to an embodiment of the present application;

fig. 15 is a schematic structural diagram of a second terminal device according to an embodiment of the present application.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

The terms "first," "second," and the like in the description and in the claims, and in the drawings, of the embodiments of the application are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the application described herein are capable of operation in other sequences than described or illustrated herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

At present, the 3rd Generation Partnership Project (3 GPP) is studying non-terrestrial communication network (NTN) technology, wherein the NTN generally provides communication services to terrestrial users by means of satellite communication, which is communication between two or more earth stations by using artificial earth satellites as relay stations to forward or reflect radio waves.

Satellite communications have many unique advantages over terrestrial cellular communications: firstly, satellite communication is not limited by user regions, for example, general land communication cannot cover regions where communication equipment cannot be set up such as oceans, mountains and deserts or communication coverage is not performed due to sparse population, and for satellite communication, because one satellite can cover a large ground and the satellite can orbit around the earth, theoretically, every corner on the earth can be covered by satellite communication; secondly, the satellite communication has great social value, and can cover with low cost in remote mountain areas, poor and laggard countries or areas, so that people in the areas can enjoy advanced voice communication and mobile internet technology, which is beneficial to reducing the digital gap between developed areas and promoting the development of the areas; thirdly, the satellite communication distance is long, and the cost of communication is not obviously increased when the communication distance is increased; and finally, the satellite communication has high stability and is not limited by natural disasters.

Therefore, in the NTN, seamless coverage is provided for the terminal device by deploying the base station or part of the base station functions on the high-altitude platform or the satellite, and the high-altitude platform or the satellite is less affected by natural disasters, so that the reliability of the 5G system can be improved.

First, a schematic architecture diagram of a communication system to which the embodiments of the present application are applicable is briefly introduced below.

Fig. 1 is a schematic structural diagram of a communication system according to an embodiment of the present application. As shown in fig. 1, the network device and the terminal devices 1 to 6 may form a communication system, and in the communication system, any terminal device among the terminal devices 1 to 6 may send uplink data to the network device or receive downlink data sent by the network device. In addition, the terminal devices 4 to 6 may also form a communication system, and in the communication system, the terminal device 4 or the terminal device 6 may transmit uplink data to the terminal device 5 or receive downlink data transmitted by the terminal device 5.

Illustratively, the communication system shown in fig. 1 may further include a communication satellite, which may serve as a transfer station between at least one of the terminal devices 1 to 6 and the network device 1, and provide services for the terminal devices 1 to 6.

In the embodiment of the present application, the terminal device may be any one of the terminal devices 1 to 6, and the network device may be a base station providing services for the terminal devices 1 to 6, or a communication satellite serving as a relay station between the terminal devices 1 to 6 and the network device.

Optionally, the communication system may include a plurality of network devices, and each network device may include other number of terminal devices within a coverage area thereof, and the number of network devices and terminal devices included in the communication system is not limited in the embodiments of the present application.

Optionally, the terminal device may be connected to the network device in a wireless manner. For example, the network device and the plurality of terminal devices may each use unlicensed spectrum for wireless communication therebetween. Optionally, the terminal devices may communicate with each other in a direct terminal-to-device (D2D) manner.

It is understood that fig. 1 is a schematic diagram, and other network devices, such as a core network device, a wireless relay device, and a wireless backhaul device, may also be included in the communication system, or other network entities, such as a network controller, a mobility management entity, and the like, which is not limited to the embodiments of the present application.

The technical scheme of the embodiment of the application can be applied to various communication systems, for example: a global system for mobile communications (GSM) system, a Code Division Multiple Access (CDMA) system, a Wideband Code Division Multiple Access (WCDMA) system, a General Packet Radio Service (GPRS), a long term evolution (Long term evolution, LTE) system, a LTE frequency division duplex (frequency division duplex, FDD) system, a LTE Time Division Duplex (TDD) system, an advanced long term evolution (advanced long term evolution, LTE-A) system, a New Radio (NR) system, an evolution system of an NR system, an LTE-based (LTE-based) system on an unlicensed frequency band, a non-based (NR) system on a non-licensed frequency band, a LTE-based (NR) system, a mobile communication system on a non-based (NR) system, a LTE-based (NR) system on a non-based on an unlicensed frequency band, a LTE-based system, a non-based on a LTE-mobile communication system, a non-based on a non-unlicensed frequency band, a LTE-based (NR) system, a communication system, a mobile communication system, a mobile communication system, UMTS), Worldwide Interoperability for Microwave Access (WiMAX) communication system, Wireless Local Area Network (WLAN), wireless fidelity (WiFi), next generation communication system, or other communication system.

Generally, conventional communication systems support a limited number of connections and are easy to implement, however, with the development of communication technology, mobile communication systems will support not only conventional communication, but also, for example, device to device (D2D) communication, machine to machine (M2M) communication, Machine Type Communication (MTC), and vehicle to vehicle (V2V) communication, and the embodiments of the present application can also be applied to these communication systems.

The system architecture and the service scenario described in the embodiment of the present application are for more clearly illustrating the technical solution of the embodiment of the present application, and do not form a limitation on the technical solution provided in the embodiment of the present application, and as a person of ordinary skill in the art knows that along with the evolution of the network architecture and the appearance of a new service scenario, the technical solution provided in the embodiment of the present application is also applicable to similar technical problems.

The network device related in this embodiment may be a common base station (e.g., a NodeB or an eNB or a gNB), a new radio controller (NR controller), a centralized network element (centralized unit), a new radio base station, a radio remote module, a micro base station, a relay (relay), a distributed network element (distributed unit), a reception point (TRP), a Transmission Point (TP), or any other device. The embodiments of the present application do not limit the specific technologies and the specific device forms used by the network devices. For convenience of description, in all embodiments of the present application, the above-mentioned apparatus for providing a wireless communication function for a terminal device is collectively referred to as a network device.

In the embodiment of the present application, the terminal device may be any terminal, for example, the terminal device may be a user equipment for machine type communication. That is, the terminal equipment may also be referred to as User Equipment (UE), a Mobile Station (MS), a mobile terminal (mobile terminal), a terminal (terminal), etc., and the terminal equipment may communicate with one or more core networks via a Radio Access Network (RAN), for example, the terminal equipment may be a mobile phone (or "cellular" phone), a computer with a mobile terminal, etc., and the terminal equipment may also be a portable, pocket, hand-held, computer-included, or vehicle-mounted mobile device, which exchanges language and/or data with the RAN. The embodiments of the present application are not particularly limited.

Optionally, the network device and the terminal device may be deployed on land, including indoors or outdoors, hand-held or vehicle-mounted; can also be deployed on the water surface; it may also be deployed on airborne airplanes, balloons and satellite vehicles. The embodiment of the application does not limit the application scenarios of the network device and the terminal device.

Optionally, the network device and the terminal device may communicate via a licensed spectrum (licensed spectrum), may also communicate via an unlicensed spectrum (unlicensed spectrum), and may also communicate via both the licensed spectrum and the unlicensed spectrum. The network device and the terminal device may communicate with each other through a frequency spectrum of 7 gigahertz (GHz) or less, through a frequency spectrum of 7GHz or more, or through a frequency spectrum of 7GHz or less and through a frequency spectrum of 7GHz or more. The embodiments of the present application do not limit the spectrum resources used between the network device and the terminal device.

First, a communication satellite, a hybrid automatic repeat request (HARQ) mechanism in the 5G NR, and Radio Link Control (RLC) segmentation and data reassembly in the 5G NR, which may be involved in the present application, are described below.

A communication satellite:

in satellite applications, communication satellites can be classified into geosynchronous orbit (GEO) satellites and Non-GEO satellites according to the orbital altitude of the serving communication satellite. Non-geosynchronous orbit satellites can be further classified into Low Earth Orbit (LEO) satellites, medium-earth orbit (MEO) satellites, high-elliptic orbit (HEO) satellites and the like. Among them, LEO satellites and GEO satellites have low orbital heights and small propagation delays, and thus are major research targets in the global communication field.

Wherein, the orbit height range of the LEO satellite is 500 km-1500 km, and the orbit period is about 1.5 hours-2 hours. The signal propagation delay for single hop communications between the terminal device and the LEO is typically less than 20ms, with a maximum satellite visibility time of 20 minutes. That is, the signal propagation distance between the terminal device and the LEO is short, the link loss is small, and the requirement on the transmission power of the terminal device is not high.

The GEO satellite had an orbital altitude of 35786km and a period of 24 hours of rotation around the earth. The signal propagation delay for a single hop communication between a terminal device and a LEO is typically 250 ms.

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

HARQ mechanism in 5G NR:

the 5G NR has a two-stage retransmission mechanism: a HARQ mechanism of a Medium Access Control (MAC) layer and an automatic repeat request (ARQ) mechanism of an RLC layer. The HARQ mechanism of the MAC layer mainly handles retransmission of lost or erroneous data, and the ARQ mechanism of the RLC layer is mainly used to supplement the HARQ mechanism of the MAC 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.

In practical applications, HARQ uses Stop-and-Wait Protocol (Stop-and-Wait Protocol) to transmit data. In the stop-wait protocol, after a sender sends a Transport Block (TB), the sender stops to wait for an acknowledgement. Thus, the sender may stop waiting for an acknowledgement after each transmission, which may result in low throughput for the user. Therefore, a plurality of parallel HARQ processes can be used in the NR, and these HARQ processes jointly form an HARQ entity, and this HARQ entity combines with the stop-wait protocol to allow continuous data transmission, that is, when one HARQ process waits for acknowledgement information, the sending end can use another HARQ process to continue sending data, thereby ensuring continuous data transmission.

It can be understood that HARQ has a difference between uplink HARQ and downlink HARQ. The uplink HARQ is for uplink data transmission, and the downlink HARQ is for downlink data transmission, and both are independent of each other.

Based on the specification of the current NR protocol, each serving cell corresponding to the terminal device has its own HARQ entity, and each HARQ entity maintains a group of parallel downlink HARQ processes and a group of parallel uplink HARQ processes.

Currently, each uplink and downlink carrier supports a maximum of 16 HARQ processes. The network device may indicate the maximum HARQ process number to the terminal device according to semi-static configuration information sent by Radio Resource Control (RRC) signaling according to a network deployment condition. If the network device does not provide the configuration parameters related to the HARQ, the downlink default number of HARQ processes 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 ID.

For downlink transmission, a Broadcast Control Channel (BCCH) uses a dedicated broadcast HARQ process. For uplink transmission, Msg3 transmission in a random process uses HARQ ID 0.

For terminal equipment which does not support downlink space division multiplexing, each downlink HARQ process can only process 1 TB simultaneously; for a terminal supporting downlink space division multiplexing, each downlink HARQ process may process 1 or 2 TBs simultaneously. Each uplink HARQ process of the terminal device processes 1 TB simultaneously.

HARQ is classified into two types, synchronous and asynchronous, in the time domain, and non-adaptive and adaptive, in the frequency domain. The NR uplink and downlink use asynchronous adaptive HARQ mechanisms. An asynchronous HARQ mechanism, that is, retransmission may occur at any time, a time interval between retransmission of the same TB and previous transmission is not fixed, and a self-adaptive HARQ mechanism may change a frequency domain resource and a Modulation and Coding Scheme (MCS) used for retransmission.

RLC segmentation and data reassembly in 5G NR:

in practical applications, there is one RLC entity for each logical channel of the terminal device, and each RLC entity may be configured in any one of TM, UM and AM modes. The logical channel is a channel formed by transmitting different information types on a physical channel, and can be generally divided into a control channel and a traffic channel.

Optionally, the Transparent Mode (TM) corresponds to a TM RLC entity. This mode may be considered as a null RLC since only the pass-through function of data is provided in this mode.

The Unacknowledged Mode (UM) corresponds to the UM RLC entity. This mode provides all RLC functions except retransmission, re-segmentation, duplicate packet detection, protocol error detection, and therefore, provides an unreliable transport service.

An Acknowledged Mode (AM) corresponds to an AM RLC entity, which provides a reliable transmission service through error detection and retransmission. This mode supports all functions of the RLC.

The UM and AM may support a segmentation and reassembly function of an RLC Service Data Unit (SDU), among others. Since the size of the resource transmitted by the transmitting end at each time is determined by the MAC layer scheduler, the size of the resource cannot be completely matched with the size of a RLC Protocol Data Unit (PDU), so the transmitting end needs to segment the RLC SDU so that the matching MAC layer indicates the size of the RLC PDU. Accordingly, the receiving end needs to reassemble all received RLC PDU segments to recover the original RLC SDU, and deliver the RLC SDU to an upper layer (packet data convergence protocol (PDCP)) layer.

For Downlink (DL) AM RLC and DL UM RLC, the network device may configure a RLC Reassembly timer (t-Reassembly) for the terminal device through an RRC instruction, and control the terminal device Reassembly by the RLC Reassembly timer to obtain the time of the RLC SDU.

Optionally, the conditions for starting the RLC reassembly timer are as follows: if the terminal device receives a PDU segment from the MAC layer and at least one bit (byte) preceding the PDU segment has not been received, the RLC reassembly timer is started if it is not running at that time.

If the duration of the RLC reassembly timer used by the terminal device reaches the configured duration, which means that at least one bit of the plurality of bits waiting for the terminal device has not been received, the following operations may be performed:

for DL UM RLC, the terminal device triggers to discard the corresponding received unacknowledged mode Data (UM Data, UMD) PDU;

for DL AM RLC, the terminal device triggers an RLC status report to inform the network device which RLC SDUs have not been correctly received, and the network device triggers retransmission of the incorrectly received RLC SDUs after receiving the RLC status report.

At present, in NR, at the terminal device side, configuration information of the RLC reassembly timer is usually configured semi-statically by the network device through RRC signaling, and the configuration information of the RLC reassembly timer may reflect a maximum time that the terminal device may wait for other segments of one RLC SDU that have been transmitted before but have not been received correctly after receiving the segment of the RLC SDU.

In NR, RLC SDU segments arrive at the receiving end out of order, mainly due to the HARQ transmission mechanism of the MAC layer, for example, one RLC SDU is divided into RLC SDU segment 1 and RLC SDU segment 2, and 2 segments are transmitted in sequence, assuming that the RLC SDU segment 1 transmitted first is received by the receiving end after undergoing 1 initial transmission and 2 retransmissions in the MAC layer, and the RLC SDU segment 2 transmitted later is correctly received by the receiving end after undergoing 1 initial transmission in the MAC layer, the terminal device may receive the RLC SDU segment 2 first, and at this time, the terminal device starts the RLC reassembly timer and waits to receive the RLC SDU segment 1 during the operation time of the RLC reassembly timer.

Compared with a cellular network adopted by the NR, the NTN has a significantly increased signal propagation delay between the terminal device and the communication satellite, so that, on one hand, in the NTN standardization process, how to further extend the value range of the RLC reassembly timer on the existing basis is being discussed; on the other hand, in the standardization process, a mode of closing the HARQ feedback function and closing the HARQ retransmission function is also developed to reduce the data transmission delay, and at this time, under the condition of closing the HARQ feedback function and the HARQ retransmission function, the network device may guarantee the reliability of data transmission through blind scheduling retransmission or RLC ARQ retransmission.

Optionally, in the case of turning off the HARQ feedback function and turning off the HARQ retransmission function, if the network device also does not support (is not configured with) blind scheduling, that is, each MAC PDU after RLC SDU segmentation has only one transmission opportunity in the MAC layer.

Under the condition of no MAC retransmission, for a GEO scene, as the time delay between the terminal equipment and the network equipment is basically unchanged or slowly changed, at this time, the duration of the RLC retransmission timer can be configured to be 0; for non-GEO scenarios (including LEO scenario, MEO scenario, and HEO scenario), since the delay between the terminal device and the network device changes continuously, if the RLC reassembly timer is configured statically in the prior art, the delay between the terminal device and the network device cannot adapt to the continuous change of the delay between the terminal device and the network device, and accordingly, for the UM mode, the terminal device loses packets too early or too late, and for the AM mode, the network device triggers RLC retransmission unnecessarily or too late, which affects the service experience of the user.

In order to solve the above problem, an embodiment of the present application provides an information processing method, where when both a downlink HARQ feedback function and an HARQ retransmission function are turned off and an RLC mode of an RLC entity is determined, an implementation manner is that a network device determines configuration information of an RLC reassembly timer corresponding to the RLC mode according to the RLC mode of the RLC entity, and sends the configuration information to a terminal device, so that the terminal device determines timer information of the RLC reassembly timer according to an instruction of the network device; the other implementation mode is that the terminal equipment determines configuration information of an RLC recombination timer corresponding to the RLC mode according to the RLC mode of the RLC entity, and determines timer information of the RLC recombination timer, and both the two implementation modes can enable the timer information of the RLC recombination timer at the terminal equipment side to better match changes of signal transmission time delay between the terminal equipment and network equipment, so that early or late RLC packet loss or RLC retransmission caused by improper time length configuration of the RLC recombination timer is avoided, and service experience of a user is improved.

Specifically, the method for dynamically adjusting the time length of the RLC reassembly timer at the terminal equipment side under the condition that the downlink HARQ feedback function and the HARQ retransmission function are closed in the NTN is provided aiming at the characteristic that the wireless signal transmission time delay between the terminal equipment and the communication satellite is rapidly changed in the NTN system especially under the non-GEO scene, so that the time length of the RLC reassembly timer at the terminal side can be better matched with the change of the signal transmission time delay between the terminal and the network.

The overall idea of the application is as follows: and dynamically adjusting the duration of the terminal RLC recombination timer in a network control or terminal autonomous mode. Specifically, there are several implementations as follows:

implementation form 1: and the network equipment controls and adjusts the duration of the RLC recombination timer at the terminal equipment side. Under the condition of closing the downlink HARQ feedback function and closing HARQ retransmission, for DL AM RLC and DL UM RLC, the network equipment determines the adjusting period and the adjusting step length of the RLC recombination timer length of the terminal equipment according to the movement rule of the network equipment and the terminal equipment, and informs the terminal equipment. The terminal equipment periodically adjusts the duration of the RLC recombination timer according to the indication of the network equipment.

Implementation form 2: and the network equipment controls and adjusts the time length of the RLC recombination timer at the terminal equipment side. The common point of the implementation mode 2 and the implementation mode 1 is that the configuration information of the RLC reassembly timer is determined by the network device and is sent to the terminal device, so that the terminal device adjusts the duration of the RLC reassembly timer according to the indication of the network device. The difference between the implementation 2 and the implementation 1 is that: under the condition of closing the downlink HARQ feedback function and closing the HARQ retransmission, for DL AM RLC and DL UM RLC, the network equipment directly determines the time length of the RLC recombination timer of the terminal equipment according to the movement rules of the network equipment and the terminal equipment, and informs the time length of the RLC recombination timer to the terminal equipment through PDCCH or MAC CE of terminal downlink scheduling, so that the terminal equipment can adjust the RLC recombination timer according to the time length of the RLC recombination timer determined by the network equipment.

Implementation form 3: the terminal equipment can automatically adjust the time length of the RLC reset timer at the terminal equipment side. In the case of turning off the downlink HARQ feedback function and turning off HARQ retransmission, for DL AM RLC and DL UM RLC, the adjustment of the duration of the RLC reassembly timer of the terminal device is self-adjusted by the terminal device. The terminal equipment can acquire the change rule of the signal transmission time delay between the terminal equipment and the network equipment according to the ephemeris information and the position of the terminal equipment, and determines the duration of the RLC recombination timer according to the time delay change rule.

The technical solution of the present application will be described in detail below with reference to specific examples. It should be noted that the technical solutions of the present application may include some or all of the following contents, and the following specific embodiments may be combined with each other, and the same or similar concepts or processes may not be described in detail in some embodiments.

Fig. 2 is an interaction diagram of a first embodiment of an information transmission method provided in the present application. The method is explained by information interaction between the terminal equipment and the network equipment. Referring to fig. 2, the information processing method may include the steps of:

s201, when the downlink HARQ feedback function and the HAQR retransmission function are both closed, the network equipment and the terminal equipment all determine the RLC mode of the RLC entity.

In the practical application of 5G NG, the network device configures one RLC entity for each logical channel between the terminal device and the network device, and sends configuration information of RLC to the terminal device through high-layer signaling, so that the terminal device configures one RLC mode for each RLC entity. Alternatively, the higher layer signaling may be RRC information or MAC Control Element (CE) information.

In the embodiment of the application, for a non-GEO scenario of the NTN, in order to reduce data transmission delay between the terminal device and the network device, both the downlink HARQ feedback function and the HARQ retransmission function between the network device and the terminal device are turned off, and at this time, in order to ensure reliability of data transmission, both the network device and the terminal device need to determine an RLC mode of an RLC entity corresponding to a logical channel.

Optionally, as can be seen from the above description of the application scenario, the RLC mode of each RLC entity may be any one of TM, UM, or AM.

For example, the RLC mode of the RLC entity is configured by the network device, the network device may determine the RLC mode of the RLC entity according to the preconfigured information, and the terminal device may determine the RLC mode of the RLC entity according to the configuration information sent by the network device.

S202, the network equipment determines configuration information of an RLC recombination timer corresponding to the RLC mode according to the RLC mode of the RLC entity.

In this embodiment, since the UM and AM of the RLC entity may support the segmentation and reassembly function of the transmission data, when the RLC mode of the RLC entity includes any one of the downlink DL AM and the downlink DL UM, the network device may control the configuration information of the RLC reassembly timer corresponding to the RLC mode.

Illustratively, when the RLC mode of the RLC entity is bidirectional acknowledged mode (bidirectional AM), or downlink unacknowledged mode (downlink UM), or bidirectional unacknowledged mode (bidirectional UM), the network device may configure the terminal device side RLC reassembly timer, thereby determining configuration information of the terminal device side RLC reassembly timer. It is understood that the bi-directional AM includes 1 Uplink (UL) AM and 1 DL AM, the bi-directional UM includes 1 UL UM and 1 DL UM, and the downlink UM is a unidirectional DL UM.

Optionally, in this embodiment, the configuration information of the RLC reassembly timer may include the following two forms:

implementation mode 1: the configuration information of the RLC reassembly timer includes: the initial duration, the adjustment period and the adjustment step length of the RLC recombination timer;

implementation mode 2: the configuration information of the RLC reassembly timer includes: the RLC reassembles the duration of the timer.

For a method for determining configuration information of the RLC reassembly timer in each implementation, reference is made to the following description of embodiments, which is not described herein again.

S203, the network equipment sends configuration information of the RLC recombination timer to the terminal equipment.

In the embodiment of the application, after determining the configuration information of the RLC reassembly timer at the terminal equipment side, the network equipment sends the configuration information of the RLC reassembly timer to the terminal equipment, so that the terminal equipment can adjust the time length (start time length) of the RLC reassembly timer in time.

As an example, when the configuration information of the RLC reassembly timer includes an initial duration, an adjustment period, and an adjustment duration of the RLC reassembly timer, the network device may transmit the configuration information of the RLC reassembly timer to the terminal device through RRC signaling or MAC CE, etc. That is, the method indicated by RRC signaling or MAC CE is mainly applicable to downlink transmission of the pre-configured resource.

As another example, the configuration information of the reassembly timer at the RLC includes: when the RLC reassembly timer is long, the network device may send configuration information of the RLC reassembly timer to the terminal device through a downlink control channel or an MAC CE.

Specifically, in the downlink transmission of the dynamic scheduling, the network device may indicate the duration of the current RLC reassembly timer of the terminal device through the PDCCH indicating the downlink scheduling. The network device may indicate the time length of the current RLC reassembly timer of the terminal device through the downlink MAC CE in the downlink transmission of the dynamic scheduling and the downlink transmission of the preconfigured resource.

S204, the terminal equipment acquires configuration information of the RLC reassembly timer corresponding to the RLC mode and configured by the network equipment.

In the embodiment of the present application, when determining that both the downlink HARQ feedback function and the HARQ retransmission function are turned off and determining the RLC mode of the RLC entity, the terminal device may obtain configuration information of the RLC reassembly timer configured by the network device.

Specifically, the terminal device may directly receive the indication information issued by the network device, or may obtain the configuration information of the RLC reassembly timer determined by the network device from other devices. The embodiment of the present application does not limit the specific manner in which the terminal device obtains the configuration information of the RLC reassembly timer, and may be determined according to an actual application scenario, which is not described herein again.

S205, the terminal equipment determines the timer information of the RLC recombination timer according to the configuration information of the RLC recombination timer.

In the embodiment of the application, when the terminal equipment acquires the configuration information of the RLC reassembly timer configured by the network equipment, the timer information of the RLC reassembly timer can be determined, and a foundation is laid for adjusting the time length of the RLC reassembly timer in time subsequently.

Further, in an embodiment of the present application, after the above S205, the method may further include the following steps:

s206, the terminal equipment adjusts the duration of the RLC recombination timer according to the timer information of the RLC recombination timer.

In this embodiment, the terminal device obtains the timer information of the RLC reassembly timer, so as to adjust the duration of the RLC reassembly timer.

As an example, when the timer information of the RLC reassembly timer includes an initial duration, an adjustment period, and an adjustment step size of the RLC reassembly timer, the terminal device adjusts the duration of the RLC reassembly timer based on the newly received initial duration, adjustment period, and adjustment step size of the RLC reassembly timer.

Specifically, the initial duration of the RLC reassembly timer is used as the initial duration, and the duration of the RLC reassembly timer is periodically adjusted according to the adjustment period and the adjustment step size of the RLC reassembly timer.

In this embodiment, the terminal device obtains the initial duration, the adjustment period, and the adjustment step length of the RLC reassembly timer indicated by the network device, and may adjust the duration of the RLC reassembly timer based on the indication. That is, the initial duration of the RLC reassembly timer is a value configured and indicated by the network device, and meanwhile, the terminal device periodically adjusts the duration of the RLC reassembly timer according to the adjustment period and the adjustment step configured by the network device.

As another example, when the timer information of the RLC reassembly timer includes the duration of the RLC reassembly timer, the terminal device updates the duration of the RLC reassembly timer based on the most recently received duration of the RLC reassembly timer.

According to the information processing method provided by the embodiment of the application, when the downlink HARQ feedback function and the HAQR retransmission function are both closed, the network equipment determines the configuration information of the RLC reassembly timer corresponding to the RLC mode according to the RLC mode of the RLC entity and sends the configuration information to the terminal equipment, so that the terminal equipment can determine the timer information of the RLC reassembly timer according to the configuration information of the RLC reassembly timer configured by the network equipment. In the technical scheme, the terminal equipment can better match the change of the signal transmission delay between the terminal equipment and the network equipment according to the duration of the RLC recombination timer indicated by the network equipment, so that the phenomena of early or late RLC packet loss or RLC retransmission are avoided, and the service experience of a user is improved.

Further, in an embodiment of the present application, the method may further include the steps of:

and the terminal equipment starts the RLC reassembly timer when determining that the RLC reassembly timer meets the starting condition.

Wherein the start condition is that at least one bit preceding the first data has not been received when the first data is received, and the RLC reassembly timer is not currently in a running state.

Specifically, in practical application, for each RLC entity configured with DL AM RLC or DL UM RLC, the method for the terminal device to use the RLC reassembly timer includes: and the terminal equipment starts the RLC reassembly timer when determining that the RLC reassembly timer meets the starting condition.

It can be understood that the starting condition may also be a restart condition of the RLC reassembly timer, that is, after the terminal device starts the RLC reassembly timer for the first time, if the running time of the RLC reassembly timer reaches the duration of the RLC reassembly timer, the terminal device may restart the RLC reassembly timer when the RLC reassembly timer meets the starting condition again.

In an embodiment of the present application, the configuration information of the RLC reassembly timer includes: when the initial duration, the adjustment period and the adjustment step length of the RLC recombination timer are adjusted, the starting duration of the RLC recombination timer is the time of starting the RLC recombination timer, and the duration of the RLC recombination timer.

For example, fig. 3 is a schematic diagram of the terminal device maintaining and using the RLC reassembly timer according to the initial duration, the adjustment period, and the adjustment step size of the RLC reassembly timer. Referring to fig. 3, when the terminal device maintains the RLC reassembly timer, if the configuration information of the RLC reassembly timer, which is first received by the terminal device, is the initial time length T1, the adjustment period T1, and the adjustment step size s1, the terminal device maintains the RLC reassembly timer based on the initial time length T1, the adjustment period T1, and the adjustment step size s 1. Illustratively, the duration tR0 of the RLC reassembly timer tR within the first adjustment period T1 is equal to the initial duration T1, the duration tR1 within the second adjustment period T1 is the sum of the duration T1 within the first adjustment period T1 and the adjustment step s1, in subsequent adjustment periods, and so on.

Optionally, in a third adjustment period T1 in which the terminal device maintains the RLC reassembly timer based on the initial duration T1, the adjustment period T1, and the adjustment step size s1, if updated configuration information (including the initial duration T2, the adjustment period T2, and the adjustment step size s2) sent by the network device is received, the terminal device may change the third period T1 of the RLC reassembly timer being maintained to the first adjustment period T2, and correspondingly, the duration tR2 of the RLC reassembly timer is changed to the initial duration T2, and the duration of the RLC reassembly timer in the second adjustment period T2 is the sum of the initial duration T2 and the adjustment step size s2, and so on in a subsequent adjustment period.

Referring to fig. 3, when the terminal device uses the RLC reassembly timer, the RLC reassembly timer is started within a second adjustment period T1 during which the terminal device maintains the RLC reassembly timer based on the initial duration T1, the adjustment period T1, and the adjustment step size s1, at which time, the duration of the RLC reassembly timer is tR1, and the RLC reassembly timer times out after the running duration tR 1. In addition, in the first adjustment period T2 in which the terminal device maintains the RLC reassembly timer based on the initial duration T2, the adjustment period T2, and the adjustment step size s2, the RLC reassembly timer is started, at this time, the duration of the RLC reassembly timer is tR2, then the RLC reassembly timer is restarted at the running duration tR2, since this time is restarted in the second adjustment period T2, at this time, the duration of the RLC reassembly timer is tR3 in the second adjustment period T2, that is, the duration tR3 is the sum of the duration tR2 and the adjustment step size s 2.

In an embodiment of the present application, the configuration information of the RLC reassembly timer includes: and when the RLC reassembly timer is long, the starting time of the RLC reassembly timer is the time of the RLC reassembly timer which is received by the terminal equipment last time.

For example, fig. 4 is a schematic diagram of the terminal device maintaining and RLC reassembly timer according to the duration of the RLC reassembly timer. Referring to fig. 4, in this embodiment, the terminal device receives, at time t0, RRC signaling indicating that a duration of the RLC reassembly timer is tR0, then receives, at time t1, first downlink scheduling information indicated by a Physical Downlink Control Channel (PDCCH), and at the same time, the downlink control channel further indicates a duration tR1 of the RLC reassembly timer, and at time t2, the terminal device receives the first downlink data information through a Physical Downlink Shared Channel (PDSCH), and may determine whether the downlink data information is completely received based on the received downlink data information, and if it is determined that the downlink data information is not completely received, determine that the RLC reassembly timer satisfies a start condition, and start the RLC reassembly timer, where a duration of the RLC reassembly timer is tR 1.

Illustratively, referring to fig. 4, the terminal device receives the second downlink scheduling information indicated by the downlink control channel at time t3, and at the same time, the downlink control channel further indicates that the duration of the RLC reassembly timer is tR2, and correspondingly, at time t4, the terminal device receives the second downlink data information.

The terminal device receives the third downlink scheduling information indicated by the downlink control channel at time t5, at this time, the downlink control channel does not indicate the duration of the RLC reassembly timer, and therefore, the terminal device determines that the duration of the RLC reassembly timer remains tR2, at time t6, the terminal device receives the third downlink data information, and determines that the RLC reassembly timer satisfies the start condition, and starts the RLC reassembly timer, at this time, the duration of the RLC reassembly timer is tR 2.

Correspondingly, the terminal device receives the fourth downlink scheduling information indicated by the downlink control channel at time t7, where the downlink control channel indicates that the duration of the RLC reassembly timer is tR3, so that, at time t8, the terminal device receives the fourth downlink data information and determines that the RLC reassembly timer meets the restart condition, and restarts the RLC reassembly timer, where the duration of the RLC reassembly timer is tR3, and accordingly, the RLC reassembly timer times out after the running duration tR 3.

For example, in a possible design of the present application, if the configuration information of the RLC reassembly timer includes an initial duration, an adjustment period, and an adjustment step size of the RLC reassembly timer, at this time, the determining of the configuration information of the RLC reassembly timer on the terminal device side in S202 may be implemented by the following two possible design manners:

as an example, when the network device knows the location information of the terminal device, the terminal device may determine the configuration information of the RLC reassembly timer according to the location information of the terminal device, the motion rule of the satellite, and the current location information of the satellite, so as to determine the adjustment period and the adjustment step length of the RLC reassembly timer on the terminal device side. Wherein the satellite is a network device serving the terminal device or an intermediate station disposed between the network device and the terminal device.

Specifically, the network device may determine the initial duration of the RLC reassembly timer according to the location information of the terminal device and the current location information of the satellite, and determine the adjustment period and the adjustment step size of the RLC reassembly timer according to the location information of the terminal device and the motion law of the satellite.

In this embodiment, the network device may calculate a signal transmission delay between the terminal device and the network device based on the location information of the terminal device and the current location information of the satellite, and further configure an initial duration for the RLC reassembly timer according to the signal transmission delay. And then, the network equipment determines the change rule of the signal transmission time delay between the terminal equipment and the network equipment according to the position information of the terminal equipment and the motion rule of the satellite, and configures an adjusting period and an adjusting step length for the RLC recombination timer according to the change rule of the signal transmission time delay.

It can be understood that, regarding the specific relationship between the adjustment period and the adjustment step size and the signal transmission delay variation rule, reference may be made to the implementation scheme in the following embodiment shown in fig. 6, where the terminal device sets the RLC reassembly timer, and details are not described here.

As another example, when the network device does not know the location information of the terminal device, the configuration information of the RLC reassembly timer is predefined, or the configuration information of the RLC reassembly timer is determined according to a preset rule.

Specifically, if the network device does not know the location information of the terminal device, at this time, the RLC reassembly timer duration at the terminal device side may be configured to have a larger value, for example: the length of the RLC reassembly timer is configured to be the signal transmission delay between the ground position farthest from the satellite and the network equipment within the ground range covered by the serving cell, and meanwhile, the period and the step size of the terminal equipment side RLC reassembly timer length are configured to be 0.

For example, if the terminal device has not reported the location information to the network device before, or the location information of the terminal device is changed, the terminal device reports the location information of the terminal device to the network device. Correspondingly, the network device may adjust the initial duration and/or the adjustment period and/or the adjustment step size of the RLC reassembly timer of the terminal device in combination with the position information reported by the terminal device and the motion rule of the satellite, and then indicate the initial duration and/or the adjustment period and/or the adjustment step size of the new RLC reassembly timer to the terminal device through RRC signaling or MAC CE.

In this embodiment, the network device adjusts the configuration information of the RLC reassembly timer according to the location information reported by the terminal device, and sends the configuration information to the terminal device, so that the configuration information of the RLC reassembly timer can be well matched with the signal transmission delay between the terminal device and the network device, and premature or late RLC packet loss or RLC retransmission can be well reduced.

Illustratively, in another possible design of the present application, the configuration information of the RLC reassembly timer includes: the RLC reassembles the duration of the timer.

Specifically, in the case of turning off the downlink HARQ feedback function and turning off HARQ retransmission, for DL AM RLC and DL UM RLC, the adjustment of the RLC reassembly timer duration of the terminal device is controlled by the network device. The network equipment can determine the duration of the RLC recombination timer of the terminal equipment according to the movement rule of the network equipment and the terminal.

Considering that the terminal device may enable the RLC reassembly timer after receiving the downlink transmission information, the network device may inform the terminal of the duration of the RLC reassembly timer of the terminal device in the PDCCH for indicating the downlink scheduling information of the terminal device or through the MAC CE.

As an example, when the configuration information of the RLC reassembly timer includes the duration of the RLC reassembly timer and the network device knows the location information of the terminal device, the determining the configuration information of the RLC reassembly timer on the terminal device side in S202 may be implemented by the following possible implementation manners:

and determining the duration of the RLC recombination timer according to the position information of the terminal equipment, the motion rule of the satellite and the current position information of the satellite.

In this embodiment, the network device may calculate a signal transmission delay and a change rule of the signal transmission delay between the terminal device and the network device based on the position information of the terminal device, the motion rule of the satellite, and the current position information of the satellite, and then set the duration of the RLC reassembly timer according to the change rule of the signal transmission delay.

As another example, when the configuration information of the RLC reassembly timer includes a duration of the RLC reassembly timer and the network device does not know the location information of the terminal device, the configuration information of the RLC reassembly timer is predefined, or the configuration information of the RLC reassembly timer is determined according to a preset rule.

For example, if the network device does not know the location information of the terminal device when determining the duration of the RLC reassembly timer, the network device may configure the duration of the RLC reassembly timer at the terminal device side to a larger value.

For example, the duration of the RLC reassembly timer is configured to be the signal transmission delay between the terrestrial location farthest from the satellite and the network device within the terrestrial range covered by the serving cell.

Further, if the terminal device does not report the location information to the network device, or the location of the terminal device is changed, the terminal device reports the location information to the network device, so that the network device can determine the duration of the RLC reassembly timer with a higher matching degree by combining the location of the terminal device.

Exemplarily, on the basis of the foregoing embodiments of the present application, fig. 5 is a schematic flowchart of a second embodiment of the information processing method provided by the present application. Referring to fig. 5, the method may further include the steps of:

s501, the network equipment determines configuration information of the RLC recombination timer at the current downlink transmission time.

In the embodiment of the present application, the configuration information of the RLC reassembly timer determined and indicated by the network device may be sent to the terminal device together with the downlink scheduling information on the downlink control channel, so that the network device may determine the configuration information of the RLC reassembly timer at each downlink transmission time.

S502, the network equipment judges whether the configuration information of the RLC reassembly timer changes according to the configuration information of the RLC reassembly timer at the previous downlink transmission time and the configuration information of the current downlink transmission time.

In this embodiment, after determining the configuration information of the RLC reassembly timer at the current downlink transmission time, the network device may compare the configuration information with the configuration information of the RLC reassembly timer indicated at the previous downlink transmission time, determine whether the configuration information of the RLC reassembly timer changes at the current downlink transmission time, and determine whether the configuration information needs to be sent to the terminal device according to the determination result.

S503, when the configuration information of the RLC reassembly timer is not changed, the network device does not carry the configuration information of the RLC reassembly timer in the downlink transmission process at the current downlink transmission time.

In this embodiment, if the network device determines that the configuration information of the RLC reassembly timer at the previous downlink transmission time and the configuration information of the RLC reassembly timer at the current downlink transmission time are not changed, at this time, the configuration information of the RLC reassembly timer may not be carried in the downlink transmission process, so as to reduce unnecessary resource waste and improve the resource utilization rate.

According to the information processing method provided by the embodiment of the application, the network equipment can also determine the configuration information of the RLC reassembly timer at the current downlink transmission time, and judge whether the configuration information of the RLC reassembly timer changes or not according to the configuration information of the RLC reassembly timer at the previous downlink transmission time and the configuration information of the current downlink transmission time, so that when the configuration information of the RLC reassembly timer does not change, the configuration information of the RLC reassembly timer is not carried in the downlink transmission process at the current downlink transmission time, unnecessary resource waste is reduced, and the resource utilization rate of the downlink transmission process is improved.

Further, in this embodiment of the present application, if the current downlink transmission of the network device corresponds to downlink transmissions of multiple logical channels, since each logical channel configured with the DL AM RLC or the DL UM RLC corresponds to one RLC reassembly timer, a duration of the RLC reassembly timer may be respectively indicated for each logical channel configured with the DL AM RLC or the DL UM RLC in the downlink control channel or the MAC CE. Therefore, the terminal equipment can obtain the accurate duration of the RLC recombination timer, and the matching precision is improved.

Exemplarily, fig. 6 is a schematic flowchart of a third embodiment of the information processing method provided in the present application. The method is characterized in that the execution main body is terminal equipment. Under the condition that the terminal equipment determines the RLC mode of the RLC entity when the terminal equipment has the downlink HARQ feedback function and the HARQ retransmission function is turned off, the terminal equipment may determine configuration information of the RLC reassembly timer corresponding to the RLC mode according to the RLC mode of the RLC entity, and determine timer information of the RLC reassembly timer. Optionally, the terminal device may obtain a change rule of signal transmission delay between itself and the network device according to the ephemeris information and the location of itself, and further determine the length of the RLC reassembly timer according to the change rule of delay. Referring to fig. 6, the information processing method may include the steps of:

s601, when the downlink HARQ feedback function and the HAQR retransmission function are both closed, the terminal equipment determines the RLC mode of the RLC entity.

In the practical application of 5G NG, the network device configures one RLC entity for each logical channel between the terminal device and the network device, and configures one RLC mode for each RLC entity, and the RLC mode of each RLC entity may be any one of TM, UM or AM.

In this embodiment, for a non-GEO scenario of NTN, when both the downlink HARQ feedback function and the HARQ retransmission function between the network device and the terminal device are turned off, in order to determine whether to configure information of the RLC reassembly timer, the terminal device first needs to determine an RLC mode of an RLC entity corresponding to a logical channel.

S602, the terminal equipment determines configuration information of an RLC reassembly timer corresponding to the RLC mode according to the RLC mode of the RLC entity.

In the embodiment of the present application, since the UM and the AM of the RLC entity may support the segmentation and reassembly function of the transmission data, when the RLC mode of the RLC entity includes any one of the downlink AM and the downlink UM, the terminal device needs to maintain the RLC reassembly timer based on the configuration information of the RLC reassembly timer.

Illustratively, the RLC mode of the RLC entity may be embodied as a bidirectional acknowledged mode (bidirectional AM) or a downlink unacknowledged mode (downlink UM) or a bidirectional unacknowledged mode (bidirectional UM).

In this embodiment, the terminal device may obtain a change rule of signal transmission delay between itself and the network device based on the ephemeris information and the location of itself, so as to adjust the duration of the RLC reassembly timer by itself.

Specifically, the S602 may be specifically implemented by the following two steps:

a1: and determining the change rule of the signal transmission delay between the terminal equipment and the network equipment based on the ephemeris information and the position information of the terminal equipment.

For example, the satellite ephemeris information is information describing a satellite motion orbit, specifically, the satellite ephemeris is a set of orbit parameters corresponding to a certain time and a change rate thereof, and the satellite position and the satellite velocity at any time can be calculated with the satellite ephemeris information, so that the terminal device can determine a change rule of signal transmission delay between the terminal device and the network device by combining with the position information of the terminal device.

A2: and determining configuration information of the RLC recombination timer according to the change rule of the signal transmission time delay between the terminal equipment and the network equipment.

In this embodiment, since there are various rules for changing the signal transmission delay between the terminal device and the network device, the terminal device may configure the duration of the RLC reassembly timer based on a preset rule.

For example, in this embodiment, according to a variation rule of the signal transmission delay between the terminal device and the network device, the step a2 may be implemented by:

as an example, during the period that the network device provides service for the terminal device, if the signal transmission delay between the terminal device and the network device becomes gradually larger, it is determined that the duration of the RLC reassembly timer is 0, and the network device is a satellite currently providing service for the terminal device.

Optionally, fig. 7 is a schematic diagram that a signal transmission delay between the terminal device and the network device gradually increases. As shown in (a) of fig. 7, during the period that the current satellite provides the communication service for the terminal device, as the satellite moves, the satellite gradually moves away from the terminal device, that is, the variation rule of the signal transmission delay between the terminal device and the network device is that the signal transmission delay between the terminal device and the network device gradually becomes larger, and a graph of the variation of the delay versus time is shown in (b) of fig. 7.

For this situation, since the signal transmission delay between the terminal device and the network device gradually increases, the time for transmitting the data segment that is sequentially behind is longer than the time for transmitting the data segment that is sequentially ahead in the plurality of data segments transmitted to the terminal device by the network device, and if the terminal device receives the data segment that is sequentially behind and does not receive the data segment that is sequentially ahead, it is considered that the data segment that is sequentially ahead is definitely lost, and at this time, it is not necessary to wait for the data segment that is sequentially ahead, so the terminal device determines that the configuration information of the RLC reassembly timer is that the duration of the RLC reassembly timer is 0.

As another example, during the period that the network device provides service for the terminal device, if the signal transmission delay between the terminal device and the network device becomes gradually smaller, the duration of the RLC reassembly timer is determined to be the difference between the maximum transmission delay and the current transmission delay.

The maximum transmission delay is the maximum delay of signal transmission between the network equipment and the terminal equipment during the service providing period, and the network equipment is a satellite which provides service for the terminal equipment at present; the current transmission delay is a delay of signal transmission between the network device and the terminal device at the current moment.

Exemplarily, fig. 8 is a schematic diagram of a gradual decrease of a signal transmission delay between a terminal device and a network device. As shown in (a) of fig. 8, during the period that the current satellite provides the communication service for the terminal device, as the satellite moves, the satellite gradually approaches the terminal device, that is, the variation rule of the signal transmission delay between the terminal device and the network device is that the signal transmission delay between the terminal device and the network device becomes gradually smaller, and a schematic diagram of the variation of the delay versus time is shown in (b) of fig. 8.

For this case, since the signal transmission delay between the terminal device and the network device gradually decreases, the time for transmitting the data segment in the sequence preceding from among the plurality of data segments transmitted from the network device to the terminal device is longer than the time for transmitting the data segment in the sequence succeeding, if the terminal device receives the data segment in the sequence succeeding, the terminal device does not receive the data segment in the sequence preceding, a period of time may be waited, and the longest time waiting at this time is the delay of the data segment in the sequence succeeding, so that the terminal device determines that the configuration information of the RLC reassembly timer is the difference value between the maximum transmission delay and the current transmission delay.

As another example, during the period that the network device provides the service for the terminal device, if the signal transmission delay between the terminal device and the network device is non-unidirectional, the duration of the RLC reassembly timer is determined to be a difference between the current maximum transmission delay and the current transmission delay.

The current maximum transmission delay is the maximum delay of signal transmission which has been experienced by the network device between the network device and the terminal device during the service providing period, the network device is a satellite which currently provides service for the terminal device, and the current transmission delay is the delay of signal transmission between the network device and the terminal device at the current moment.

Fig. 9 is a schematic diagram of the signal transmission delay between the terminal device and the network device becoming smaller and larger. As shown in (a) of fig. 9, during the period that the current satellite provides the communication service for the terminal device, as the satellite moves, the satellite gradually approaches the terminal device and then gradually moves away from the terminal device, that is, the variation rule of the signal transmission delay between the terminal device and the network device is that the signal transmission delay between the terminal device and the network device gradually becomes smaller and larger, and a graph of the variation of the delay versus time is shown in fig. 9 (b).

It can be understood that, in the embodiment of the present application, the signal transmission delay between the terminal device and the network device is a non-unidirectional change, and may also include other types of change rules, for example, a form of gradually increasing and then gradually decreasing, or a form of gradually increasing, then gradually decreasing, and finally gradually increasing. The embodiment of the present application does not limit the concrete expression form of the non-unidirectional variation, and may be determined according to actual situations.

For this case, when the signal transmission delay between the terminal device and the network device changes in a non-unidirectional manner, for example, the signal transmission delay gradually decreases and then gradually increases. During the period that the signal transmission delay between the terminal equipment and the network equipment is gradually reduced, the time for transmitting the data segments with the sequence being the front is longer than that for transmitting the data segments with the sequence being the back in the plurality of data segments transmitted from the network equipment to the terminal equipment, if the terminal equipment receives the data segments with the sequence being the back, the terminal equipment does not receive the data segments with the sequence being the front, the terminal equipment can wait for a period of time, and the longest waiting time is the delay of the data segments with the sequence being the back; and during the period that the signal transmission delay between the terminal device and the network device is gradually increased, the network device transmits a plurality of data segments to the terminal device, wherein the time for transmitting the data segments in the sequence following the terminal device is longer than the time for transmitting the data segments in the sequence preceding the terminal device, if the terminal device receives the data segments in the sequence following the terminal device, the data segments in the sequence preceding the terminal device are not received, and the terminal does not know whether the data segments in the sequence preceding the terminal device are transmitted during the period that the signal transmission delay between the terminal device and the network device is gradually reduced or the period that the signal transmission delay between the terminal device and the network device is gradually increased, so the terminal can wait for a period of time. Therefore, the terminal device determines that the configuration information of the RLC reassembly timer is that the duration of the RLC reassembly timer is a difference between the current maximum transmission delay and the current transmission delay.

Similarly, the current transmission delay may be calculated according to the position information of the satellite and the position information of the terminal device, and the current maximum transmission delay is the maximum value of all time delays of signal transmission which the network device has experienced between the terminal device and the network device during the service providing period.

S603, the terminal equipment determines the timer information of the RLC recombination timer according to the configuration information of the RLC recombination timer.

In this embodiment, after determining the configuration information of the RLC reassembly timer, the terminal device may determine the timer information, for example, the duration, of the RLC reassembly timer based on the configuration information, so as to achieve the purpose of adjusting the duration of the RLC reassembly timer in time, so that when the terminal device meets the starting condition of the RLC reassembly timer, the terminal device may control the operation duration of the RLC reassembly timer based on the configuration information of the RLC reassembly timer.

Further, in an embodiment of the present application, after the above S603, the method may further include the following steps:

s604, the terminal equipment adjusts the duration of the RLC recombination timer according to the timer information of the RLC recombination timer.

For specific implementation of this step, reference may be made to the description of S604 in the embodiment shown in fig. 2, and details are not described here.

and starting the RLC reassembly timer when the RLC reassembly timer is determined to meet a starting condition that at least one bit preceding the first data has not been received and the RLC reassembly timer is not currently in a running state when the first data is received.

Optionally, when the signal transmission delay between the terminal device and the network device gradually increases, the terminal device may start/restart the RLC reassembly timer at any time that satisfies the start/restart of the RLC reassembly timer, where the duration of the RLC reassembly timer is 0. Namely: when the RLC recombination timer meets the starting/restarting condition, the terminal equipment does not start/restart the RLC recombination timer and directly executes related overtime operation of the RLC recombination timer.

Optionally, when the signal transmission delay between the terminal device and the network device gradually decreases, the terminal device may start/restart the RLC reassembly timer at any time that satisfies the start/restart of the RLC reassembly timer, where the duration of the RLC reassembly timer is the difference between the maximum transmission delay and the current transmission delay. The current transmission delay can be calculated according to the current position information of the satellite and the position information of the terminal device.

Optionally, when the signal transmission delay between the terminal device and the network device is non-unidirectional, the terminal device may start/restart the RLC reassembly timer at any time that satisfies the start/restart of the RLC reassembly timer, where the duration of the RLC reassembly timer is a difference between a current maximum transmission delay and a current transmission delay.

It can be understood that the specific implementation principle of S604 is similar to the implementation principle of S205 in the embodiment shown in fig. 2, and the specific implementation principle of the terminal device starting and/or restarting the RLC reassembly timer is also similar, which may specifically refer to the record in the embodiment shown in fig. 2, and is not described here again.

According to the information processing method provided by the embodiment of the application, when the downlink HARQ feedback function and the HAQR retransmission function are both closed, the terminal equipment determines the RLC mode of the RLC entity, determines the configuration information of the RLC reassembly timer according to the RLC mode of the RLC entity, and finally determines the timer information of the RLC reassembly timer according to the configuration information of the RLC reassembly timer. In the technical scheme, the terminal equipment can automatically determine the configuration information of the RLC recombination timer and maintain and use the RLC recombination timer, so that the time length of the RLC recombination timer can be more accurately matched with the change of signal transmission delay between the terminal equipment and the network equipment, and the problem that the time length of the RLC recombination timer is improperly configured to cause early or late RLC packet loss or RLC retransmission to influence user experience is solved.

By integrating the above embodiments, the embodiments of the present application provide an information processing method, and in fact, a method for dynamically adjusting the time length of a terminal RLC reassembly timer in an NTN under the condition that a downlink HARQ feedback function is turned off and HARQ retransmission is turned off, regardless of whether a network device configures information of the RLC reassembly timer on a terminal device side or the terminal device side automatically determines information of the RLC reassembly timer, the time length of the RLC reassembly timer on the terminal device side can be well matched with a change in signal transmission delay between the terminal device and the network device, and by using the RLC reassembly timer maintained by the method, a problem of too early or too late RLC packet loss or RLC retransmission caused by improper time length configuration of the RLC reassembly timer can be avoided, and service experience of a user is improved.

In the above, a specific implementation of the information processing method mentioned in the embodiment of the present application is described, and the following is an embodiment of the apparatus of the present application, which can be used to execute the embodiment of the method of the present application. For details which are not disclosed in the embodiments of the apparatus of the present application, reference is made to the embodiments of the method of the present application.

Fig. 10 is a schematic structural diagram of an information processing apparatus according to a first embodiment of the present disclosure. The device can be integrated in the terminal equipment and can also be realized by the terminal equipment. As shown in fig. 10, the apparatus may include: an acquisition module 1001 and a processing module 1002.

The processing module 1002 is configured to determine an RLC mode of an RLC entity when both a HARQ feedback function and an HARQ retransmission function are turned off;

the obtaining module 1001 is configured to obtain configuration information of an RLC reassembly timer configured by a network device and corresponding to the RLC mode;

the processing module 1002 is further configured to determine timer information of the RLC reassembly timer according to the configuration information of the RLC reassembly timer.

In an embodiment of the present application, the processing module 1002 is further configured to, after determining the timer information of the RLC reassembly timer according to the configuration information of the RLC reassembly timer, adjust a duration of the RLC reassembly timer according to the timer information of the RLC reassembly timer.

In a possible design of the embodiment of the present application, the configuration information of the RLC reassembly timer includes: the initial duration, the adjustment period and the adjustment step size of the RLC reassembly timer.

Optionally, the processing module 1002 is specifically configured to use the initial duration of the RLC reassembly timer as an initial duration, and periodically adjust the duration of the RLC reassembly timer according to the adjustment period and the adjustment step size of the RLC reassembly timer.

In another possible design of the embodiment of the present application, the configuration information of the RLC reassembly timer includes: the RLC reassembles the duration of the timer.

In yet another possible design of this embodiment of the application, the processing module 1002 is further configured to start the RLC reassembly timer when it is determined that the RLC reassembly timer satisfies a start condition, where the start condition is that at least one bit before the first data is not received when the first data is received, and the RLC reassembly timer is not currently in a running state.

As an example, the configuration information of the RLC reassembly timer at the RLC includes: the starting time of the RLC reassembly timer is the time when the RLC reassembly timer is started, and the time of the RLC reassembly timer is the time when the RLC reassembly timer is started.

As another example, the configuration information of the RLC reassembly timer includes: and when the RLC reassembly timer is long, starting the RLC reassembly timer for the time length of the RLC reassembly timer which is received by the terminal equipment last time.

In any of the above possible designs of the embodiments of the present application, the RLC mode includes any one of: downlink acknowledged mode DL AM, downlink unacknowledged mode DL UM.

The apparatus provided in this embodiment is configured to execute the technical solutions on the terminal device side in the embodiments shown in fig. 2 and fig. 5, and the implementation principles and technical effects are similar, which are not described herein again.

Fig. 11 is a schematic structural diagram of a second embodiment of an information processing apparatus according to the present application. The device can be integrated in a network device, and can also be realized by the network device. As shown in fig. 11, the apparatus may include: a processing module 1101 and a sending module 1102.

The processing module 1101 is configured to determine an RLC mode of an RLC entity controlled by a radio link when both a HARQ feedback function and an HARQ retransmission function of a downlink hybrid automatic repeat request are turned off, and determine configuration information of an RLC reassembly timer corresponding to the RLC mode according to the RLC mode of the RLC entity;

the sending module 1102 is configured to send configuration information of the RLC reassembly timer to the terminal device.

In one possible design of the embodiment of the present application, the configuration information of the RLC reassembly timer includes: the initial duration, the adjustment period and the adjustment step size of the RLC reassembly timer.

In this embodiment, the processing module 1101 is configured to determine configuration information of an RLC reassembly timer corresponding to the RLC mode, specifically:

the processing module 1101 is specifically configured to determine configuration information of the RLC reassembly timer according to the position information of the terminal device, the motion rule of the satellite, and the current position information of the satellite.

Optionally, the processing module 1101 is configured to determine configuration information of the RLC reassembly timer according to the position information of the terminal device, the motion rule of the satellite, and the current position information of the satellite, where the configuration information is specifically:

the processing module 1101 is specifically configured to determine an initial duration of the RLC reassembly timer according to the position information of the terminal device and the current position information of the satellite, and determine an adjustment period and an adjustment step size of the RLC reassembly timer according to the position information of the terminal device and the motion rule of the satellite.

In this possible design of this embodiment, the sending module 1102 has a control unit MAC CE configured to send the configuration information of the RLC reassembly timer to the terminal device through radio resource control RRC signaling or medium access control.

In this embodiment, the processing module 1101 is configured to determine configuration information of an RLC reassembly timer on a terminal device side, specifically:

the processing module 1101 is specifically configured to determine the duration of the RLC reassembly timer according to the position information of the terminal device, the motion rule of the satellite, and the current position information of the satellite.

In this possible design of this embodiment, the sending module 1102 has a control unit MAC CE configured to send the configuration information of the RLC reassembly timer to the terminal device through a downlink control channel or medium access control.

In another possible design of this embodiment, the processing module 1101 is further configured to determine configuration information of the RLC reassembly timer at a current downlink transmission time, determine whether the configuration information of the RLC reassembly timer changes according to the configuration information of the RLC reassembly timer at a previous downlink transmission time and the configuration information of the current downlink transmission time, and when the configuration information of the RLC reassembly timer does not change, do not carry the configuration information of the RLC reassembly timer in a downlink transmission process at the current downlink transmission time.

In another possible design of the embodiment of the present application, the configuration information of the RLC reassembly timer is predefined, or is determined according to a preset rule.

The apparatus provided in this embodiment is configured to execute the technical solutions on the network device side in the embodiments shown in fig. 2 and fig. 5, and the implementation principles and technical effects are similar, which are not described herein again.

Fig. 12 is a schematic structural diagram of a third embodiment of an information processing apparatus according to the present application. The device can be integrated in the terminal equipment and can also be realized by the terminal equipment. As shown in fig. 12, the apparatus may include: a determination module 1201 and a processing module 1202.

The determining module 1201 is configured to determine an RLC mode of an RLC entity when both a HARQ feedback function and an HARQ retransmission function are turned off;

the processing module 1202 is configured to determine configuration information of an RLC reassembly timer corresponding to the RLC mode according to the RLC mode of the RLC entity, and determine timer information of the RLC reassembly timer according to the configuration information of the RLC reassembly timer.

In an embodiment of the present application, the processing module 1202 is further configured to, after determining the timer information of the RLC reassembly timer according to the configuration information of the RLC reassembly timer, adjust a duration of the RLC reassembly timer according to the timer information of the RLC reassembly timer.

In a possible design of the embodiment of the present application, the processing module 1202 is configured to determine configuration information of an RLC reassembly timer corresponding to the RLC mode, and specifically:

the processing module 1202 is specifically configured to determine a change rule of signal transmission delay between the terminal device and the network device based on ephemeris information and location information of the terminal device, and determine configuration information of the RLC reassembly timer according to the change rule of signal transmission delay between the terminal device and the network device.

As an example, the processing module 1202 is configured to determine, according to a change rule of a signal transmission delay between the terminal device and the network device, configuration information of the RLC reassembly timer, specifically:

the processing module 1202 is specifically configured to, during a period that the network device provides a service for the terminal device, determine that a duration of the RLC reassembly timer is 0 if a signal transmission delay between the terminal device and the network device becomes gradually longer, where the network device is a satellite that currently provides a service for the terminal device.

As another example, the processing module 1202 is configured to determine, according to a change rule of a signal transmission delay between the terminal device and the network device, configuration information of the RLC reassembly timer, where the configuration information is specifically:

the processing module 1202 is specifically configured to, during a period in which the network device provides a service for the terminal device, determine, if a signal transmission delay between the terminal device and the network device becomes gradually smaller, that a duration of the RLC reassembly timer is a difference between a maximum transmission delay and a current transmission delay;

wherein the maximum transmission delay is the maximum delay of signal transmission between the network device and the terminal device during service provision, and the network device is a satellite currently providing service for the terminal device;

the current transmission delay is a delay of signal transmission between the network device and the terminal device at the current moment.

the processing module 1202 is specifically configured to, during a period in which the network device provides a service for the terminal device, determine, if a signal transmission delay between the terminal device and the network device is non-unidirectional, that a duration of the RLC reassembly timer is a difference between a current maximum transmission delay and a current transmission delay;

wherein the current maximum transmission delay is the maximum delay of signal transmission that the network device has experienced between the terminal device and the network device during the service provision period, and the network device is a satellite currently providing the service for the terminal device;

In another possible design of this embodiment of the application, the processing module 1202 is further configured to start the RLC reassembly timer when it is determined that the RLC reassembly timer satisfies a start condition, where the start condition is that at least one bit before the first data is not received when the first data is received, and the RLC reassembly timer is not currently in a running state.

Optionally, the RLC mode includes any one of: downlink acknowledged mode DL AM, downlink unacknowledged mode DL UM.

The apparatus provided in this embodiment is configured to execute the technical solution on the terminal device side in the embodiment shown in fig. 6, and the implementation principle and the technical effect are similar, which are not described herein again.

It should be noted that the division of the modules of the above apparatus is only a logical division, and the actual implementation may be wholly or partially integrated into one physical entity, or may be physically separated. And these modules can be realized in the form of software called by processing element; or may be implemented entirely in hardware; and part of the modules can be realized in the form of calling software by the processing element, and part of the modules can be realized in the form of hardware. For example, the processing module may be a separate processing element, or may be integrated into a chip of the apparatus, or may be stored in a memory of the apparatus in the form of program code, and a processing element of the apparatus calls and executes the functions of the above determination module. Other modules are implemented similarly. In addition, all or part of the modules can be integrated together or can be independently realized. The processing element described herein may be an integrated circuit having signal processing capabilities. In implementation, each step of the above method or each module above may be implemented by an integrated logic circuit of hardware in a processor element or an instruction in the form of software.

For example, the above modules may be one or more integrated circuits configured to implement the above methods, such as: one or more Application Specific Integrated Circuits (ASICs), or one or more microprocessors (DSPs), or one or more Field Programmable Gate Arrays (FPGAs), among others. For another example, when some of the above modules are implemented in the form of a processing element scheduler code, the processing element may be a general-purpose processor, such as a Central Processing Unit (CPU) or other processor that can call program code. As another example, these modules may be integrated together, implemented in the form of a system-on-a-chip (SOC).

In the above embodiments, the implementation may be wholly or partially realized by software, hardware, firmware, or any combination thereof. When implemented in software, may be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When loaded and executed on a computer, cause the processes or functions described in accordance with the embodiments of the application to occur, in whole or in part. The computer may be a general purpose computer, a special purpose computer, a network of computers, or other programmable device. The computer instructions may be stored in a computer readable storage medium or transmitted from one computer readable storage medium to another, for example, from one website site, computer, server, or data center to another website site, computer, server, or data center via wired (e.g., coaxial cable, fiber optic, Digital Subscriber Line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.). The computer-readable storage medium can be any available medium that can be accessed by a computer or a data storage device, such as a server, a data center, etc., that includes one or more available media. The usable medium may be a magnetic medium (e.g., floppy disk, hard disk, magnetic tape), an optical medium (e.g., DVD), or a semiconductor medium (e.g., Solid State Disk (SSD)), among others.

Fig. 13 is a schematic structural diagram of an embodiment of a network device provided in the present application. As shown in fig. 13, the network device may include: a processor 1301, a memory 1302, a transmitter 1303, and an interface 1304 to communicate with a terminal device.

Wherein the memory 1302 stores computer-executable instructions;

the processor 1301 executes the computer execution instruction stored in the memory 1302, so that the processor 1301 executes the technical solution of the network device side in the embodiment shown in fig. 2 or fig. 3.

Fig. 14 is a schematic structural diagram of a first terminal device according to an embodiment of the present application. As shown in fig. 14, the terminal device may include: a processor 1401, a memory 1402, a receiver 1403, and an interface 1404 for communicating with the terminal device.

Wherein memory 1402 stores computer-executable instructions;

the processor 1401 executes the computer execution instructions stored in the memory 1402, so that the processor 1401 executes the technical solution of the terminal device side in the embodiment shown in fig. 2 or fig. 3.

Fig. 15 is a schematic structural diagram of a second terminal device according to an embodiment of the present application. As shown in fig. 15, the terminal device may include: the terminal device comprises a processor 1501, a memory 1502, a communication interface 1503 and a system bus 1504, wherein the memory 1502 and the communication interface 1503 are connected with the processor 1501 through the system bus 1504 and complete mutual communication, the memory 1502 is used for storing computer execution instructions, the communication interface 1503 is used for communicating with other devices, and the technical scheme of the terminal device side in the embodiment shown in the previous fig. 6 is realized when the processor 1501 executes the computer execution instructions.

The present application further provides a computer-readable storage medium, in which computer-executable instructions are stored, and when the computer-executable instructions are executed by a processor, the computer-readable storage medium is configured to implement the technical solution on the network device side in the embodiments shown in fig. 2 or fig. 3.

The present application further provides a computer-readable storage medium, in which computer-executable instructions are stored, and when the computer-executable instructions are executed by a processor, the computer-readable storage medium is configured to implement the technical solution on the terminal device side in the foregoing embodiments shown in fig. 2 or fig. 3.

The present application further provides a computer-readable storage medium, where the computer-readable storage medium stores computer-executable instructions, and when the computer-executable instructions are executed by a processor, the computer-executable instructions are used to implement the technical solution on the terminal device side in the embodiment shown in fig. 6.

The embodiment of the present application further provides a program, which is configured to, when executed by a processor, execute the technical solution on the network device side (base station, communication satellite) in the foregoing embodiments shown in fig. 2 or fig. 3.

The embodiment of the present application further provides a program, and when the program is executed by a processor, the program is configured to execute the technical solution of the terminal device in the embodiment shown in fig. 2 or fig. 3.

The embodiment of the present application further provides a program, and when the program is executed by a processor, the program is configured to execute the technical solution of the terminal device in the embodiment shown in fig. 6.

The embodiment of the present application further provides a computer program product, which includes program instructions, where the program instructions are used to implement the technical solution of the network device side (base station, communication satellite) in the foregoing embodiments shown in fig. 2 or fig. 3.

An embodiment of the present application further provides a computer program product, which includes program instructions, where the program instructions are used to implement the technical solution on the terminal device side in the embodiment shown in fig. 2 or fig. 3.

An embodiment of the present application further provides a computer program product, which includes program instructions, where the program instructions are used to implement the technical solution on the terminal device side in the embodiment shown in fig. 6.

An embodiment of the present application further provides a chip, including: a processing module and a communication interface, wherein the processing module can execute the technical solution of the network device side in the embodiment shown in fig. 2 or fig. 3.

Further, the chip further includes a storage module (e.g., a memory), where the storage module is configured to store instructions, and the processing module is configured to execute the instructions stored by the storage module, and the execution of the instructions stored in the storage module causes the processing module to execute the technical solution on the network device side in the foregoing embodiment shown in fig. 2 or fig. 3.

An embodiment of the present application further provides a chip, including: a processing module and a communication interface, wherein the processing module can execute the technical scheme of the terminal device side in the embodiment shown in fig. 2 or fig. 3.

Further, the chip further includes a storage module (e.g., a memory), where the storage module is configured to store instructions, and the processing module is configured to execute the instructions stored by the storage module, and the execution of the instructions stored in the storage module causes the processing module to execute the technical solution on the terminal device side in the foregoing embodiment shown in fig. 2 or fig. 3.

An embodiment of the present application further provides a chip, including: a processing module and a communication interface, wherein the processing module can execute the technical solution of the terminal device side in the embodiment shown in fig. 6.

Further, the chip further includes a storage module (e.g., a memory), where the storage module is configured to store instructions, and the processing module is configured to execute the instructions stored by the storage module, and the execution of the instructions stored in the storage module causes the processing module to execute the technical solution on the terminal device side in the foregoing embodiment shown in fig. 6.

In this application, "at least one" means one or more, "a plurality" means two or more. "and/or" describes the association relationship of the associated objects, meaning that there may be three relationships, e.g., a and/or B, which may mean: a exists alone, A and B exist simultaneously, and B exists alone, wherein A and B can be singular or plural. The character "/" generally indicates that the former and latter associated objects are in an "or" relationship; in the formula, the character "/" indicates that the preceding and succeeding related objects are in a relationship of "division". "at least one of the following" or similar expressions refer to any combination of these items, including any combination of the singular or plural items. For example, at least one (one) of a, b, or c, may represent: a, b, c, a-b, a-c, b-c, or a-b-c, wherein a, b, c may be single or multiple.

It is to be understood that the various numerical references referred to in the embodiments of the present application are merely for descriptive convenience and are not intended to limit the scope of the embodiments of the present application. The sequence numbers of the above processes do not mean the execution sequence, and the execution sequence of each process should be determined by its function and inherent logic, and should not be limited in any way to the implementation process of the embodiments of the present application.

Claims

An information processing method characterized by comprising:

when the HARQ feedback function and the HAQR retransmission function of the downlink hybrid automatic repeat request are both closed, the terminal equipment determines the RLC mode of the RLC entity controlled by the wireless link;

the terminal equipment acquires configuration information of an RLC recombination timer which is configured by network equipment and corresponds to the RLC mode;

and the terminal equipment determines the timer information of the RLC recombination timer according to the configuration information of the RLC recombination timer.
The method of claim 1, wherein after the terminal device determines the timer information of the RLC reassembly timer according to the configuration information of the RLC reassembly timer, the method further comprises:

and the terminal equipment adjusts the duration of the RLC recombination timer according to the timer information of the RLC recombination timer.
The method of claim 2, wherein the configuration information of the RLC reassembly timer comprises: the initial duration, the adjustment period and the adjustment step size of the RLC reassembly timer.
The method of claim 3, wherein the adjusting, by the terminal device, the duration of the RLC reassembly timer according to the timer information of the RLC reassembly timer comprises:

and the terminal equipment takes the initial time length of the RLC recombination timer as the initial time length, and periodically adjusts the time length of the RLC recombination timer according to the adjustment period and the adjustment step length of the RLC recombination timer.
The method of claim 1 or 2, wherein the configuration information of the RLC reassembly timer comprises: the RLC reassembles the duration of the timer.
The method according to any one of claims 1-5, further comprising:

the terminal equipment starts the RLC reassembly timer when determining that the RLC reassembly timer meets a starting condition, wherein the starting condition is that at least one bit before first data is not received when the first data is received, and the RLC reassembly timer is not in a running state currently.
The method of claim 6, wherein the configuration information at the RLC reassembly timer comprises: the starting time of the RLC reassembly timer is the time when the RLC reassembly timer is started, and the time of the RLC reassembly timer is the time when the RLC reassembly timer is started.
The method of claim 6, wherein the configuration information at the RLC reassembly timer comprises: and when the RLC reassembly timer is started, the starting time of the RLC reassembly timer is the time of the RLC reassembly timer which is received by the terminal equipment last time.
The method according to any of claims 1-8, wherein the RLC mode comprises any of: downlink acknowledged mode DL AM, downlink unacknowledged mode DL UM.
An information processing method characterized by comprising:

when the HARQ feedback function and the HARQ retransmission function of the downlink hybrid automatic repeat request (HARQ) are both closed, the network equipment determines the RLC mode of a Radio Link Control (RLC) entity;

the network equipment determines configuration information of an RLC recombination timer corresponding to the RLC mode according to the RLC mode of the RLC entity;

and the network equipment sends the configuration information of the RLC reassembly timer to the terminal equipment.
The method of claim 10, wherein the configuration information of the RLC reassembly timer comprises: the initial duration, the adjustment period and the adjustment step size of the RLC reassembly timer.
The method of claim 11, wherein the network device determining the configuration information of the RLC reassembly timer at the terminal device side comprises:

and the network equipment determines the configuration information of the RLC recombination timer according to the position information of the terminal equipment, the motion rule of the satellite and the current position information of the satellite.
The method of claim 12, wherein the determining, by the network device, the configuration information of the RLC reassembly timer according to the location information of the terminal device, the motion rule of the satellite, and the current location information of the satellite comprises:

the network equipment determines the initial duration of the RLC recombination timer according to the position information of the terminal equipment and the current position information of the satellite;

and the network equipment determines the adjustment period and the adjustment step length of the RLC recombination timer according to the position information of the terminal equipment and the motion rule of the satellite.
The method according to any of claims 11-13, wherein the network device sends configuration information of the RLC reassembly timer to a terminal device, comprising:

and the network equipment sends the configuration information of the RLC reassembly timer to the terminal equipment through a control unit MAC CE controlled by Radio Resource Control (RRC) signaling or medium access.
The method of claim 10, wherein the configuration information of the RLC reassembly timer comprises: the length of the RLC reassembly timer.
The method of claim 15, wherein the network device determining the configuration information of the RLC reassembly timer at the terminal device side comprises:

and the network equipment determines the duration of the RLC recombination timer according to the position information of the terminal equipment, the motion rule of the satellite and the current position information of the satellite.
The method according to claim 15 or 16, wherein the network device sends configuration information of the RLC reassembly timer to a terminal device, comprising:

and the network equipment sends the configuration information of the RLC recombination timer to the terminal equipment through a control unit MAC CE controlled by a downlink control channel or a medium access.
The method of claim 17, further comprising:

the network equipment determines configuration information of the RLC recombination timer at the current downlink transmission moment;

the network equipment judges whether the configuration information of the RLC recombination timer changes or not according to the configuration information of the RLC recombination timer at the previous downlink transmission time and the configuration information of the current downlink transmission time;

and when the configuration information of the RLC reassembly timer is not changed, the network equipment does not carry the configuration information of the RLC reassembly timer in the downlink transmission process at the current downlink transmission time.
The method of claim 11 or 15, wherein the configuration information of the RLC reassembly timer is predefined or determined according to a preset rule.
The method according to any of claims 10-19, wherein the RLC mode comprises any of: downlink acknowledged mode DL AM, downlink unacknowledged mode DL UM.
An information processing method characterized by comprising:

when the HARQ feedback function and the HAQR retransmission function of the downlink hybrid automatic repeat request are both closed, the terminal equipment determines the RLC mode of the RLC entity controlled by the wireless link;

the terminal equipment determines configuration information of an RLC recombination timer corresponding to the RLC mode according to the RLC mode of the RLC entity;

and the terminal equipment determines the timer information of the RLC recombination timer according to the configuration information of the RLC recombination timer.
The method of claim 21, wherein after the terminal device determines the timer information of the RLC reassembly timer according to the configuration information of the RLC reassembly timer, the method further comprises:

and the terminal equipment adjusts the duration of the RLC recombination timer according to the timer information of the RLC recombination timer.
The method according to claim 21 or 22, wherein the determining, by the terminal device, the configuration information of the RLC reassembly timer corresponding to the RLC mode comprises:

the terminal equipment determines the change rule of the signal transmission delay between the terminal equipment and the network equipment based on the ephemeris information and the position information of the terminal equipment;

and the terminal equipment determines the configuration information of the RLC recombination timer according to the change rule of the signal transmission time delay between the terminal equipment and the network equipment.
The method of claim 23, wherein the determining, by the terminal device, the configuration information of the RLC reassembly timer according to a variation rule of a signal transmission delay between the terminal device and the network device comprises:

and in the period that the network equipment provides service for the terminal equipment, if the signal transmission delay between the terminal equipment and the network equipment is gradually increased, the terminal equipment determines that the time length of the RLC reassembly timer is 0, and the network equipment is a satellite which provides service for the terminal equipment at present.
The method of claim 23, wherein the determining, by the terminal device, the configuration information of the RLC reassembly timer according to a variation rule of a signal transmission delay between the terminal device and the network device comprises:

when the network equipment provides service for the terminal equipment, if the signal transmission time delay between the terminal equipment and the network equipment is gradually reduced, the terminal equipment determines that the time length of the RLC reassembly timer is a difference value between the maximum transmission time delay and the current transmission time delay;

wherein the maximum transmission delay is the maximum delay of signal transmission between the network device and the terminal device during service provision, and the network device is a satellite currently providing service for the terminal device;

the current transmission delay is a delay of signal transmission between the network device and the terminal device at the current moment.
The method of claim 23, wherein the determining, by the terminal device, the configuration information of the RLC reassembly timer according to a variation rule of a signal transmission delay between the terminal device and the network device comprises:

when the network equipment provides service for the terminal equipment, if the signal transmission time delay between the terminal equipment and the network equipment is non-unidirectional change, the terminal equipment determines the time length of the RLC recombination timer to be the difference value between the current maximum transmission time delay and the current transmission time delay;

wherein the current maximum transmission delay is the maximum delay of signal transmission that the network device has experienced between the terminal device and the network device during the service provision period, and the network device is a satellite currently providing the service for the terminal device;

the current transmission delay is a delay of signal transmission between the network device and the terminal device at the current moment.
The method according to any one of claims 21-26, further comprising:

the terminal equipment starts the RLC reassembly timer when determining that the RLC reassembly timer meets a starting condition, wherein the starting condition is that at least one bit before first data is not received when the first data is received, and the RLC reassembly timer is not in a running state currently.
The method according to any of claims 21-27, wherein the RLC mode comprises any of: downlink acknowledged mode DL AM, downlink unacknowledged mode DL UM.
An information processing apparatus characterized by comprising: the device comprises an acquisition module and a processing module;

the processing module is used for determining the RLC mode of the radio link control RLC entity when the HARQ feedback function and the HAQR retransmission function of the downlink hybrid automatic repeat request are both closed;

the acquiring module is used for acquiring configuration information of an RLC recombination timer which is configured by network equipment and corresponds to the RLC mode;

the processing module is further configured to determine timer information of the RLC reassembly timer according to the configuration information of the RLC reassembly timer.
The apparatus of claim 29, wherein the processing module is further configured to adjust the duration of the RLC reassembly timer based on the timer information for the RLC reassembly timer after determining the timer information for the RLC reassembly timer based on the configuration information for the RLC reassembly timer.
The apparatus of claim 30, wherein the configuration information of the RLC reassembly timer comprises: the initial duration, the adjustment period and the adjustment step size of the RLC reassembly timer.
The apparatus according to claim 31, wherein the processing module is configured to adjust a duration of the RLC reassembly timer according to the timer information of the RLC reassembly timer, specifically:

the processing module is specifically configured to periodically adjust the duration of the RLC reassembly timer according to the adjustment period and the adjustment step size of the RLC reassembly timer, with the initial duration of the RLC reassembly timer as an initial duration.
The apparatus of claim 29 or 30, wherein the configuration information of the RLC reassembly timer comprises: the RLC reassembles the duration of the timer.
The apparatus of any of claims 29-33, wherein the processing module is further configured to start the RLC reassembly timer upon determining that the RLC reassembly timer satisfies a start condition that at least one bit preceding the first data has not been received while the RLC reassembly timer is not currently running.
The apparatus of claim 34, wherein the configuration information at the RLC reassembly timer comprises: the starting time of the RLC reassembly timer is the time when the RLC reassembly timer is started, and the time of the RLC reassembly timer is the time when the RLC reassembly timer is started.
The apparatus of claim 34, wherein the configuration information at the RLC reassembly timer comprises: and when the RLC reassembly timer is long, starting the RLC reassembly timer for the time length of the RLC reassembly timer which is received by the terminal equipment last time.
The apparatus of any of claims 29-36, wherein the RLC mode comprises any of: downlink acknowledged mode DL AM, downlink unacknowledged mode DL UM.
An information processing apparatus characterized by comprising: the device comprises a processing module and a sending module;

the processing module is used for determining an RLC mode of a Radio Link Control (RLC) entity when a downlink hybrid automatic repeat request (HARQ) feedback function and an HARQ retransmission function are both closed, and determining configuration information of an RLC reassembly timer corresponding to the RLC mode according to the RLC mode of the RLC entity;

and the sending module is used for sending the configuration information of the RLC reassembly timer to the terminal equipment.
The apparatus of claim 38, wherein the configuration information of the RLC reassembly timer comprises: the initial duration, the adjustment period and the adjustment step size of the RLC reassembly timer.
The apparatus of claim 39, wherein the processing module is configured to determine configuration information of an RLC reassembly timer corresponding to the RLC mode, and specifically:

the processing module is specifically configured to determine configuration information of the RLC reassembly timer according to the position information of the terminal device, the motion rule of the satellite, and the current position information of the satellite.
The apparatus of claim 40, wherein the processing module is configured to determine configuration information of the RLC reassembly timer according to the position information of the terminal device, a motion rule of a satellite, and the current position information of the satellite, and specifically:

the processing module is specifically configured to determine an initial duration of the RLC reassembly timer according to the position information of the terminal device and the current position information of the satellite, and determine an adjustment period and an adjustment step length of the RLC reassembly timer according to the position information of the terminal device and a motion rule of the satellite.
The apparatus of any of claims 39-41, wherein the transmitting module has a control unit MAC CE for transmitting the configuration information of the RLC reassembly timer to a terminal device via Radio Resource Control (RRC) signaling or medium access control.
The apparatus of claim 38, wherein the configuration information of the RLC reassembly timer comprises: the RLC reassembles the duration of the timer.
The apparatus of claim 43, wherein the processing module is configured to determine configuration information of an RLC reassembly timer on the terminal device side, and specifically:

the processing module is specifically configured to determine a duration of the RLC reassembly timer according to the position information of the terminal device, a motion rule of a satellite, and the current position information of the satellite.
The apparatus of claim 43 or 44, wherein the transmitting module has a control unit MAC CE for transmitting the configuration information of the RLC reassembly timer to a terminal device via a downlink control channel or medium access control.
The apparatus of claim 45, wherein the processing module is further configured to determine configuration information of the RLC reassembly timer at a current downlink transmission time, determine whether the configuration information of the RLC reassembly timer has changed according to the configuration information of the RLC reassembly timer at a previous downlink transmission time and the configuration information of the current downlink transmission time, and when the configuration information of the RLC reassembly timer has not changed, not carry the configuration information of the RLC reassembly timer in a downlink transmission process at the current downlink transmission time.
The apparatus of claim 39 or 43, wherein the configuration information of the RLC reassembly timer is predefined or determined according to a preset rule.
The apparatus of any of claims 38-47, wherein the RLC mode comprises any of: downlink acknowledged mode DL AM, downlink unacknowledged mode DL UM.
An information processing apparatus characterized by comprising: a determining module and a processing module;

the determining module is used for determining the RLC mode of the radio link control RLC entity when the feedback function of the downlink hybrid automatic repeat request HARQ and the HARQ retransmission function are both closed;

the processing module is configured to determine configuration information of an RLC reassembly timer corresponding to the RLC mode according to the RLC mode of the RLC entity, and determine timer information of the RLC reassembly timer according to the configuration information of the RLC reassembly timer.
The apparatus of claim 49, wherein the processing module is further configured to adjust the duration of the RLC reassembly timer based on the timer information of the RLC reassembly timer after determining the timer information of the RLC reassembly timer based on the configuration information of the RLC reassembly timer.
The apparatus of claim 49 or 50, wherein the processing module is configured to determine configuration information of an RLC reassembly timer corresponding to the RLC mode, and specifically:

the processing module is specifically configured to determine a change rule of signal transmission delay between the terminal device and the network device based on ephemeris information and location information of the terminal device, and determine configuration information of the RLC reassembly timer according to the change rule of signal transmission delay between the terminal device and the network device.
The apparatus of claim 51, wherein the processing module is configured to determine, according to a change rule of a signal transmission delay between the terminal device and the network device, configuration information of the RLC reassembly timer, which is specifically:

the processing module is specifically configured to determine that the duration of the RLC reassembly timer is 0 if a signal transmission delay between the terminal device and the network device becomes gradually longer during a period in which the network device provides a service for the terminal device, where the network device is a satellite currently providing a service for the terminal device.
The apparatus of claim 51, wherein the processing module is configured to determine, according to a change rule of a signal transmission delay between the terminal device and the network device, configuration information of the RLC reassembly timer, which is specifically:

the processing module is specifically configured to, during a period in which the network device provides a service for the terminal device, determine, if a signal transmission delay between the terminal device and the network device becomes gradually smaller, that a duration of the RLC reassembly timer is a difference between a maximum transmission delay and a current transmission delay;

wherein the maximum transmission delay is the maximum delay of signal transmission between the network device and the terminal device during service provision, and the network device is a satellite currently providing service for the terminal device;

the current transmission delay is a delay of signal transmission between the network device and the terminal device at the current moment.
The apparatus of claim 51, wherein the processing module is configured to determine, according to a change rule of a signal transmission delay between the terminal device and the network device, configuration information of the RLC reassembly timer, which is specifically:

the processing module is specifically configured to, during a period in which the network device provides a service for the terminal device, determine, if a signal transmission delay between the terminal device and the network device is non-unidirectional, that a duration of the RLC reassembly timer is a difference between a current maximum transmission delay and a current transmission delay;

wherein the current maximum transmission delay is the maximum delay of signal transmission that the network device has experienced between the terminal device and the network device during the service provision period, and the network device is a satellite currently providing the service for the terminal device;

the current transmission delay is a delay of signal transmission between the network device and the terminal device at the current moment.
The apparatus of any of claims 49-54, wherein the processing module is further configured to start the RLC reassembly timer upon determining that the RLC reassembly timer satisfies a start condition that at least one bit preceding the first data has not been received while the RLC reassembly timer is not currently running.
The apparatus of any of claims 49-55, wherein the RLC mode comprises any of: downlink acknowledged mode DL AM, downlink unacknowledged mode DL UM.
A terminal device, comprising:

a processor, a memory, a receiver, and an interface for communicating with a terminal device;

the memory stores computer-executable instructions;

the processor executes computer-executable instructions stored by the memory, causing the processor to perform the method of any of claims 1-9.
A network device, comprising:

a processor, a memory, a transmitter, and an interface for communicating with a terminal device;

the memory stores computer-executable instructions;

the processor executes computer-executable instructions stored by the memory, causing the processor to perform the method of any of claims 10-20.
A terminal device, comprising: a processor, a memory, and computer program instructions stored on the memory and executable on the processor, the processor when executing the computer program instructions implementing the method of any of claims 21-28.
A computer-readable storage medium having computer-executable instructions stored thereon, which when executed by a processor, perform the method of any one of claims 1-9.
A computer-readable storage medium having computer-executable instructions stored thereon, which when executed by a processor, perform the method of any one of claims 10-20.
A computer-readable storage medium having computer-executable instructions stored thereon, which when executed by a processor, perform the method of any one of claims 21-28.