CN114642028B

CN114642028B - Information processing method, device, equipment and storage medium

Info

Publication number: CN114642028B
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: 2023-12-12
Anticipated expiration: 2040-01-19
Also published as: WO2021142824A1; CN114642028A

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 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 transmits 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 reassembly timer at the terminal equipment side can be better matched with the change of the signal transmission delay between the terminal equipment and the network equipment, so that the situation that the RLC packet is lost or the RLC retransmission is carried out too early or too late due to improper time length configuration of the RLC reassembly timer is avoided, and the service experience of a user is improved.

Description

Information processing method, device, equipment and storage medium

Technical Field

The embodiment of the application relates to the technical field of communication, in particular to an information processing method, an information processing device, information processing equipment and a storage medium.

Background

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

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

However, in the non-geosynchronous orbit (geostationary earth orbit, GEO) scenario of NTN, since the time delay between the terminal device and the network device is continuously changed, the manner of statically configuring the RLC reassembly timer cannot well adapt to the time delay change between the terminal device and the network device, and the phenomenon that RLC packet loss or RLC retransmission is performed too early or too late due to improper time length configuration of the RLC reassembly timer may occur, which reduces the user service experience.

Disclosure of Invention

The embodiment of the application provides an information processing method, device, equipment and storage medium, which are used for solving the problem of poor user service experience caused by the phenomenon of too early or too late execution of RLC packet loss or RLC retransmission due to improper time length configuration of an RLC reassembly timer at a terminal side.

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

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

the terminal equipment acquires configuration information of an RLC reassembly timer corresponding to the RLC mode configured by the network equipment;

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

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

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

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

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 an RLC mode of a Radio Link Control (RLC) entity when the HARQ feedback function and the HARQ retransmission function are closed;

the acquiring module is configured to acquire configuration information of an RLC reassembly timer configured by the network device and corresponding to the RLC mode;

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

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

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

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

the processor executes computer-executable instructions stored in the memory to cause the processor to perform the method as described in the first aspect 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 in the memory to cause the processor to perform the method as described in the second aspect 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 according to the third aspect described 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 having stored therein computer-executable instructions for performing the method of the first aspect when the computer-executable instructions are executed by a processor.

In an eleventh aspect, embodiments of the present application provide a computer-readable storage medium having stored therein computer-executable instructions for performing the method of the second aspect when the computer-executable instructions are executed by a processor.

In a twelfth aspect, embodiments of the present application provide a computer-readable storage medium having stored therein computer-executable instructions for performing the method of the third aspect when the computer-executable instructions are executed by a processor.

In a thirteenth aspect, an embodiment of the application provides a program for performing the method according to the first aspect, when the program is executed by a processor.

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

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

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, embodiments of the present application provide a computer program product comprising program instructions for implementing a method as described in the second aspect.

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

In a nineteenth aspect, an embodiment of the present application provides a chip, including: a processing module and a communication interface, the processing module being capable of performing the method of the first aspect.

Further, the chip further comprises a memory module (e.g. a memory), the memory module is configured to store instructions, the processing module is configured to execute the instructions stored in the memory module, and execution of the instructions stored in the memory module causes the processing module to perform the method according to the first aspect.

In a twentieth aspect, an embodiment of the present application provides a chip, including: a processing module and a communication interface, the processing module being capable of performing the method according to the second aspect.

Further, the chip further comprises a memory module (e.g. a memory), the memory module is configured to store instructions, the processing module is configured to execute the instructions stored in the memory module, and execution of the instructions stored in the memory module causes the processing module to perform 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 and a communication interface, the processing module being capable of performing the method according to the third aspect.

Further, the chip further comprises a memory module (e.g. a memory), the memory module being configured to store instructions, the processing module being configured to execute the instructions stored by the memory module, and execution of the instructions stored in the memory module causing the processing module to perform 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 of the fourth aspect or the apparatus of the sixth aspect, and the network device is the apparatus of the fifth aspect.

When the downlink HARQ feedback function and the HARQ retransmission function are closed and the RLC mode of an RLC entity is determined, the network equipment determines the configuration information of an RLC reassembly timer corresponding to the RLC mode according to the RLC mode of the RLC entity and issues the configuration information to the terminal equipment so that the terminal equipment determines the timer information of the RLC reassembly timer according to the indication of the network equipment; the other implementation mode is that 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, and determines the timer information of the RLC reassembly timer, and the two implementation modes can enable the timer information of the RLC reassembly timer of the terminal equipment side to be better matched with the change of signal transmission delay between the terminal equipment and the network equipment, so that the situation that too early or too late RLC packet loss or RLC retransmission is caused by improper time length configuration of the RLC reassembly timer is avoided, and the 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 schematic diagram of a first embodiment of an information transmission method provided by the present application;

fig. 3 is a schematic diagram of a terminal device maintaining and using an RLC reassembly timer according to an initial duration, an adjustment period, and an adjustment step size of the RLC reassembly timer;

fig. 4 is a schematic diagram of a terminal device maintaining and RLC reassembly timers according to the duration of the RLC reassembly timers;

FIG. 5 is a schematic flow chart of a second embodiment of an information processing method according to the present application;

fig. 6 is a schematic flow chart of a third embodiment of an information processing method according to the present application;

fig. 7 is a schematic diagram of a gradual increase in signal transmission delay between a terminal device and a network device;

fig. 8 is a schematic diagram showing a gradual decrease in signal transmission delay between a terminal device and a network device;

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

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

FIG. 11 is a schematic diagram of a second embodiment of an information processing apparatus according to the present application;

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

Fig. 13 is a schematic structural diagram of an embodiment of a network device according to the present application;

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

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

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present application more apparent, the technical solutions of the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application, and it is apparent that the described embodiments are some embodiments of the present application, but not all embodiments of the present application. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.

The terms first, second and the like in the description of embodiments of the application, in the claims and in the above-described figures, are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate such that the embodiments of the application described herein may be implemented in other sequences than those illustrated or otherwise described 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 third generation partnership project (3rd Generation Partnership Project,3GPP) is researching non-terrestrial communication network (non terrestrial network, NTN) technology, NTN generally adopting a satellite communication mode to provide communication services to terrestrial users, and satellite communication refers to 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 the user region, for example, general land communication cannot cover areas where communication equipment cannot be built or communication cannot be covered due to sparse population, such as ocean, mountain, desert and the like, and for satellite communication, one satellite can cover a larger ground, and the satellite can make orbital motion around the earth, so that theoretically each corner on the earth can be covered by satellite communication; secondly, the satellite communication has great social value, and the satellite communication can be covered in countries or regions with far mountain areas and poverty behind with lower cost, so that people in the regions enjoy advanced voice communication and mobile internet technology, thereby being beneficial to reducing digital gaps of developed regions and promoting the development of the regions; again, the satellite communication distance is far, 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 NTN, the base station or part of the base station functions are deployed on the high-altitude platform or satellite to provide seamless coverage for the terminal equipment, and the high-altitude platform or satellite is less affected by natural disasters, so that the reliability of the 5G system can be improved.

The architecture of a communication system to which embodiments of the present application are applied will be briefly described 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 device 1 may form a communication system in which any terminal device of the terminal device 6 and the terminal device 1 may transmit uplink data to the network device or receive downlink data transmitted by the network device. In addition, the terminal device 4 and the terminal device 6 may also constitute a communication system in which 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.

The communication system shown in fig. 1 may also comprise a communication satellite, which may serve as a relay station between at least one of the terminal devices 1 and the terminal device 6 and the network device 1, for providing services to the terminal device 1 and the terminal device 6, for example.

In the embodiment of the present application, the terminal device may be any one of the terminal devices 1 and 6, and the network device may be a base station that provides services for the terminal device 1 and 6, or may be a communication satellite that is a transfer station between the terminal device 1 and the terminal device 6 and the network device.

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

Alternatively, the terminal device may be connected to the network device in a wireless manner. For example, unlicensed spectrum may be used for wireless communications between a network device and a plurality of terminal devices. Optionally, communication between terminal devices may be performed by means of direct connection (D2D) between the terminal devices.

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

The technical scheme of the embodiment of the application can be applied to various communication systems, such as: global system for mobile communications (global system of mobile communication, GSM), code division multiple access (code division multiple access, CDMA) system, wideband code division multiple access (wideband code division multiple access, WCDMA) system, general packet radio service (general packet radio service, GPRS), long term evolution (long term evolution, LTE) system, LTE frequency division duplex (frequency division duplex, FDD) system, LTE time division duplex (time division duplex, TDD) system, long term evolution advanced (advanced long term evolution, LTE-a) system, new Radio (NR) system, evolution system of NR system, LTE (LTE-based access to unlicensed spectrum, LTE-U) system on unlicensed band, NR (NR-based access to unlicensed spectrum, NR-U) system on unlicensed band, universal mobile communication system (universal mobile telecommunication system, UMTS), universal internet microwave access (worldwide interoperability for microwave access, wiMAX) communication system, wireless local area network (wireless local area networks, WLAN), wireless fidelity (wireless fidelity, wiFi), next generation communication system or other communication system, etc.

Generally, the number of connections supported by the conventional communication system is limited and easy to implement, however, as the communication technology advances, the mobile communication system will support not only conventional communication but also, for example, device-to-device (D2D) communication, machine-to-machine (machine to machine, M2M) communication, machine type communication (machine type communication, MTC), inter-vehicle (vehicle to vehicle, V2V) communication, and the like, to which the embodiments of the present application can also be applied.

The system architecture and the service scenario described in the embodiments of the present application are for more clearly describing the technical solution provided in the embodiments of the present application, and do not constitute a limitation on the technical solution provided in the embodiments of the present application, and those skilled in the art can know that, with the evolution of the network architecture and the appearance of a new service scenario, the technical solution provided in the embodiments of the present application is equally applicable to similar technical problems.

The network device involved in the embodiment of the present application may be a common base station (such as a NodeB or an eNB or a gNB), a new radio controller (new radio controller, NR controller), a centralized network element (centralized unit), a new radio base station, a remote radio module, a micro base station, a relay, a distributed network element (distributed unit), a receiving point (transmission reception point, TRP), a transmission point (transmission point, TP), or any other device. The embodiment of the application does not limit the specific technology and the specific equipment form adopted by the network equipment. 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 application, the terminal device may be any terminal, for example, the terminal device may be a user device for machine type communication. That is, the terminal device may also be referred to as a User Equipment (UE), a Mobile Station (MS), a mobile terminal (terminal), etc., which may communicate with one or more core networks via a radio access network (radio access network, RAN), e.g., the terminal device may be a mobile phone (or "cellular" phone), a computer with a mobile terminal, etc., e.g., the terminal device may also be a portable, pocket, hand-held, computer-built-in or vehicle-mounted mobile device that exchanges voice and/or data with the radio access network. The embodiment of the application is not particularly limited.

Alternatively, the network devices and terminal devices may be deployed on land, including indoors or outdoors, hand-held or vehicle-mounted; the device can be deployed on the water surface; but also on aerial planes, balloons and satellites. The embodiment of the application does not limit the application scenes of the network equipment and the terminal equipment.

Optionally, communication between the network device and the terminal device and between the terminal device and the terminal device may be performed through a licensed spectrum (licensed spectrum), communication may be performed through an unlicensed spectrum (unlicensed spectrum), and communication may be performed through both the licensed spectrum and the unlicensed spectrum. Communication between the network device and the terminal device and between the terminal device and the terminal device may be performed through a frequency spectrum of 7 gigahertz (GHz) or less, may be performed through a frequency spectrum of 7GHz or more, and may be performed using a frequency spectrum of 7GHz or less and a frequency spectrum of 7GHz or more simultaneously. The embodiment of the application does not limit the frequency spectrum resources used between the network equipment and the terminal equipment.

In the following, a description will first be given of a communication satellite, a hybrid automatic repeat request (hybrid automatic repeat request, HARQ) mechanism in 5G NR, and radio link control (radio link control, RLC) segmentation and data reassembly in 5G NR, to which the present application may relate.

Communication satellite:

in satellite applications, communication satellites can be categorized into geosynchronous orbit (geostationary earth orbit, GEO) satellites and Non-geosynchronous orbit (Non-GEO) satellites, depending on the orbit altitude of the serving communication satellite. The non-geosynchronous orbit satellites may be further classified into Low Earth Orbit (LEO) satellites, medium Earth Orbit (MEO) satellites, and high elliptical orbit (high elliptical orbit, HEO) satellites. The LEO satellite and the GEO satellite have low orbit height and small propagation delay, so that the LEO satellite and the GEO satellite become main research objects in the field of global communication.

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 equipment and the LEO is short, the link loss is small, and the requirement on the transmitting power of the terminal equipment is not high.

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

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

HARQ mechanism in 5G NR:

the 5G NR has a two-stage retransmission mechanism: HARQ mechanisms of the medium access control (medium access control, MAC) layer and automatic repeat request (automatic repeat request, ARQ) mechanisms of the RLC layer. The HARQ mechanism of the MAC layer mainly handles retransmission of lost or erroneous data, and the ARQ of the RLC layer is mainly used for supplementing 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 the transmitting end transmits a Transport Block (TB), it stops waiting for acknowledgement. Thus, the sender stops waiting for acknowledgements after each transmission, resulting in a low throughput for the user. Therefore, multiple parallel HARQ processes can be used in NR, and these HARQ processes together form a HARQ entity, and this HARQ entity combines with a stopping protocol to allow continuous transmission of data, that is, when one HARQ process waits for acknowledgement information, the transmitting end can use another HARQ process to continue transmitting data, so as to ensure continuous transmission of data.

It can be appreciated that HARQ has a division of uplink HARQ and downlink HARQ. Uplink HARQ is aimed at uplink data transmission, and downlink HARQ is aimed at downlink data transmission, and the uplink HARQ and the downlink HARQ are mutually independent.

Based on the present NR protocol, each serving cell corresponding to a terminal device has a respective HARQ entity, and each HARQ entity maintains a set of parallel downlink HARQ processes and a set of parallel uplink HARQ processes.

Currently, a maximum of 16 HARQ processes are supported per uplink and downlink carrier. The network device may indicate the maximum HARQ process number to the terminal device according to the semi-static configuration information sent by the network deployment situation through radio resource control (radio resource control, RRC) signaling. If the network device does not provide configuration parameters for HARQ, the default number of HARQ processes for the downlink is 8, and the maximum number of HARQ processes supported per carrier for the uplink is always 16. Each HARQ process corresponds to one HARQ process ID.

For downlink transmission, the broadcast control channel (broadcast control channel, BCCH) uses a dedicated broadcast HARQ process. For uplink transmission, the Msg3 transmission in the 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 at the same time; 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 simultaneously processes 1 TB.

HARQ is classified into synchronous and asynchronous types in the time domain and into non-adaptive and adaptive types in the frequency domain. The NR uplink and downlink use asynchronous adaptive HARQ mechanisms. The asynchronous HARQ mechanism, i.e. retransmission, may occur at any time, the time interval between retransmission of the same TB and the last transmission is not fixed, and the adaptive HARQ mechanism may change the frequency domain resources and modulation and coding strategy (modulation and coding scheme, MCS) used for the retransmission.

RLC segmentation and data reassembly in 5G NR:

in practical application, each logical channel of the terminal device has an RLC entity, and each RLC entity can be configured in any one of TM, UM, and AM modes. The logical channels are channels formed by transmitting different information types on physical channels, and can be generally classified into control channels and traffic channels.

Alternatively, a Transmission Mode (TM) corresponds to the TM RLC entity. This mode may be considered an empty RLC since only a data transparent function is provided in this mode.

The unacknowledged mode (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 thus provides an unreliable transport service.

The acknowledged mode (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 RLC.

Among other things, UM and AM may support segmentation and reassembly functions for RLC service data units (service data unit, SDU). Since the size of the resources per transmission by the sender is determined by the MAC layer scheduler, its size generally cannot be exactly matched to the size of the RLC protocol data units (protocol data unit, PDUs), the sender needs to segment the RLC SDUs so that it matches the size of the MAC layer indication RLC PDUs. Accordingly, the receiving end needs to reassemble all received RLC PDU fragments in order to recover the original RLC SDU and deliver it to the upper layer (packet data convergence protocol (packet data convergence protocol, PDCP) layer).

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

Optionally, the conditions for starting the RLC reassembly timer are: 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 this time.

If the duration of the RLC reassembly timer used by the terminal device reaches the configuration duration, it means that at least one bit of the multiple bits waiting by the terminal device has not been received yet, at this time, the following operations may be performed:

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

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

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

In NR, since 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 out successively, if 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, the terminal device may receive RLC SDU segment 2 first after the RLC SDU segment 2 is received correctly after undergoing 1 initial transmission in the MAC layer, and at this time, the terminal device starts an RLC reassembly timer and waits for receiving RLC SDU segment 1 in the running time of the RLC reassembly timer.

Compared with a cellular network adopted by NR, the NTN greatly increases the signal propagation delay between the terminal equipment and the communication satellite in the NTN, so on one hand, in the NTN standardization process, how to further expand the value range of the RLC reorganization timer on the basis of the prior art 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 closing the HARQ retransmission function, the network device can guarantee the reliability of data transmission through blind scheduling retransmission or RLC ARQ retransmission.

Alternatively, 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 for) blind scheduling, i.e. each MAC PDU after RLC SDU segmentation has only one transmission opportunity at the MAC layer.

Under the condition of no MAC retransmission, for GEO scene, the time delay between the terminal equipment and the network equipment is basically unchanged or is changed slowly, and at this time, the time length of the RLC retransmission timer can be configured to be 0; for non-GEO scenes (including LEO scenes, MEO scenes and HEO scenes), because the time delay between the terminal equipment and the network equipment is continuously changed, if the continuous change of the time delay between the terminal equipment and the network equipment cannot be well adapted in the existing static configuration RLC reorganization timer mode, correspondingly, for UM mode, the terminal equipment can be caused to lose packets too early or too late, and for AM mode, the network equipment can be caused to unnecessarily or too late trigger RLC retransmission, and the service experience of a user is affected.

In view of the above problems, an embodiment of the present application provides an information processing method, where, when a downlink HARQ feedback function and an HARQ retransmission function are both turned off and an RLC mode of an RLC entity is determined, an implementation manner is that a network device determines, according to the RLC mode of the RLC entity, configuration information of an RLC reassembly timer corresponding to the RLC mode, and issues the configuration information to a terminal device, so that the terminal device determines, according to an instruction of the network device, timer information of the RLC reassembly timer; the other implementation mode is that 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, and determines the timer information of the RLC reassembly timer, and both the two implementation modes can enable the timer information of the RLC reassembly timer at the terminal equipment side to better match the change of signal transmission delay between the terminal equipment and the network equipment, thereby avoiding premature or too late RLC packet loss or RLC retransmission caused by improper time length configuration of the RLC reassembly timer and improving service experience of users.

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

The whole idea of the application is as follows: dynamically adjusting the length of the terminal RLC reassembly timer in a network control or terminal autonomous mode. Specifically, the following realization forms are provided:

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

Implementation form 2: the network device controls and adjusts the time length of the terminal device side RLC reassembly timer. The common point of the implementation 2 and the implementation 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. Implementation 2 differs from implementation 1 in that: under the condition of closing the downlink HARQ feedback function and closing the HARQ retransmission, for the DL AM RLC and the DL UM RLC, the network equipment directly determines the time length of the RLC reassembly timer of the terminal equipment according to the movement rules of the network equipment and the terminal equipment, and informs the terminal equipment of the time length of the RLC reassembly timer through the PDCCH or the MAC CE which is scheduled by the terminal equipment in a downlink mode, so that the terminal equipment can adjust the RLC reassembly timer according to the time length of the RLC reassembly timer determined by the network equipment.

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

The technical scheme of the application is described in detail through specific embodiments. It should be noted that, the technical solution of the present application may include some or all of the following, and the following specific embodiments may be combined with each other, and the same or similar concepts or processes may not be described in some embodiments.

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

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

In the practical application of 5G NG, the network device configures an RLC entity for each logical channel between the terminal device and the network device, and sends RLC configuration information to the terminal device through higher layer signaling, so that the terminal device configures an 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 present application, for the non-GEO scenario of NTN, in order to reduce the data transmission delay between the terminal device and the network device, the downlink HARQ feedback function and the HARQ retransmission function between the network device and the terminal device are both turned off, and at this time, in order to ensure the reliability of data transmission, the network device and the terminal device need to determine the RLC mode of the RLC entity corresponding to the logical channel.

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

Illustratively, 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 issued by the network device.

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

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

For example, when the RLC mode of the RLC entity is a bidirectional acknowledged mode (bidirectional AM) or a downlink unacknowledged mode (downlink UM) or a 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 a bidirectional AM contains 1 Uplink (UL) AM and 1 DL AM, and a bidirectional UM contains 1 UL UM and 1 DL UM, and a downlink UM is unidirectional DL UM.

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

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

implementation 2: the configuration information of the RLC reassembly timer includes: the length of the RLC reassembly timer.

The method for determining the configuration information of the RLC reassembly timer in each implementation is described in the following embodiments, and is not described herein.

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

In the embodiment of the application, after the network equipment determines the configuration information of the RLC reassembly timer of 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 duration (starting duration) 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 step size of the RLC reassembly timer, the network device may send the configuration information of the RLC reassembly timer to the terminal device through RRC signaling or MAC CE, or the like. That is, the method indicated by RRC signaling or MAC CE is mainly applicable to downlink transmission of the preconfigured resource.

As another example, the configuration information at the RLC reassembly timer includes: when the length of the RLC reassembly timer is longer, the network equipment can send the configuration information of the RLC reassembly timer to the terminal equipment through a downlink control channel or MAC CE.

Specifically, in the downlink transmission of the dynamic scheduling, the network device may indicate the current RLC reassembly timer duration of the terminal device by indicating the PDCCH of the downlink scheduling. In the downlink transmission of dynamic scheduling and the downlink transmission of pre-configured resources, the network device can indicate the duration of the current RLC reassembly timer of the terminal device through downlink MAC CE.

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

In the embodiment of the application, when the terminal equipment determines that the downlink HARQ feedback function and the HARQ retransmission function are closed and determines the RLC mode of the RLC entity, the terminal equipment can acquire the configuration information of the RLC reassembly timer configured by the network equipment.

Specifically, the terminal device may directly receive the indication information sent by the network device, or may obtain, from other devices, configuration information of the RLC reassembly timer determined by the network device. The embodiment of the application does not limit the specific mode of the terminal equipment for acquiring the configuration information of the RLC reassembly timer, and the configuration information can be determined according to the actual application scene and is not repeated here.

S205, the terminal equipment determines the timer information of the RLC reassembly timer according to the configuration information of the RLC reassembly 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 the subsequent timely adjustment of the time length of the RLC reassembly timer, so that the terminal equipment can control the running time length of the RLC reassembly timer based on the acquired configuration information of the RLC reassembly timer when the starting condition of the RLC reassembly timer is met.

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

s206, the terminal equipment adjusts the time length of the RLC reassembly timer according to the timer information of the RLC reassembly timer.

In this embodiment, the terminal device obtains the timer information of the RLC reassembly timer, so that the duration of the RLC reassembly timer can be adjusted.

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 equipment 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 time length of the RLC reassembly timer is taken as the initial time length, and the time length of the RLC reassembly timer is periodically adjusted according to the adjustment period and the adjustment step length of the RLC reassembly timer.

In this embodiment, when 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, the duration of the RLC reassembly timer may be adjusted 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 at the same time, the terminal device periodically adjusts the duration of the RLC reassembly timer according to the adjustment period and the adjustment step length configured by the network device.

As another example, when the timer information of the RLC reassembly timer includes the length of the RLC reassembly timer, the terminal equipment updates the length of the RLC reassembly timer based on the latest received length 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 HARQ retransmission function are 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 transmits 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. According to the technical scheme, the terminal equipment can better match the change of signal transmission delay between the terminal equipment and the network equipment according to the time length of the RLC reassembly timer indicated by the network equipment, so that the phenomenon of premature or late RLC packet loss or RLC retransmission is 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 an operational 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 is: and the terminal equipment starts the RLC reorganization timer when determining that the RLC reorganization 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 satisfies the starting condition again.

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

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

Optionally, in the third adjustment period T1 of the RLC reassembly timer maintained by the terminal device based on the initial period T1, the adjustment period T1 and the adjustment step length s1, if update configuration information (including the initial period T2, the adjustment period T2 and the adjustment step length s 2) issued by the network device is received, the terminal device may change the third period T1 of the RLC reassembly timer being maintained into the first adjustment period T2, and correspondingly, the period tR2 of the RLC reassembly timer is changed into the initial period T2, and the period of the RLC reassembly timer in the second adjustment period T2 is the sum of the initial period T2 and the adjustment step length s2, and so on in the subsequent adjustment period.

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

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

Fig. 4 is a schematic diagram of a terminal device according to the length maintenance of the RLC reassembly timer and the RLC reassembly timer. Referring to fig. 4, in this embodiment, the terminal device receives the RRC signaling at time t0, indicates that the duration of the RLC reassembly timer is tR0, then receives the first downlink scheduling information indicated by the physical downlink control channel (physical downlink control channel, PDCCH) at time t1, and at the same time, the downlink control channel also indicates the duration tR1 of the RLC reassembly timer, and at time t2, the terminal device receives the first downlink data information through the physical downlink shared channel (physical downlink shared channel, PDSCH), and may determine whether the downlink data information is received completely based on the received downlink data information, if it is determined that the downlink data information is not received completely, it is determined that the RLC reassembly timer meets the starting condition, and the RLC reassembly timer is started, where the duration of the RLC reassembly timer is tR1.

For example, referring to fig. 4, the terminal device receives the second downlink scheduling information indicated by the downlink control channel at time t3, and meanwhile, the downlink control channel also 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 equipment receives the third downlink scheduling information indicated by the downlink control channel at the time t5, and at this time, the downlink control channel does not indicate the duration of the RLC reassembly timer, so the terminal equipment determines that the duration of the RLC reassembly timer remains tR2 unchanged, and at the time t6, the terminal equipment receives the third downlink data information and determines that the RLC reassembly timer meets the starting condition, and at this time, the duration of the RLC reassembly timer is tR2.

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

For example, in one possible design of the present application, if the configuration information of the RLC reassembly timer includes the initial duration, the adjustment period, and the adjustment step length of the RLC reassembly timer, the determining the configuration information of the RLC reassembly timer of the terminal equipment side in S202 may be implemented in 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, thereby determining the adjustment period and the adjustment step length of the RLC reassembly timer duration on the terminal device side. Wherein the satellite is a network device that provides services to the terminal device or an intermediate station that is arranged between the network device and the terminal device.

Specifically, the network device may determine an 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 an adjustment period and an adjustment step size of the RLC reassembly timer according to the location information of the terminal device and a motion rule 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 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 adjustment period and an adjustment step length for the RLC reorganization timer according to the change rule of the signal transmission delay.

It can be understood that, regarding the specific relationship between the adjustment period and the adjustment step length and the change rule of the signal transmission delay, reference may be made to the embodiment shown in fig. 6 below, where the implementation scheme of the RLC reassembly timer is set by the terminal device, which is not described herein again.

As another example, when the network device is not aware of the location information of the terminal device, the configuration information of the RLC reassembly timer is predefined or 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 of the terminal device side may be configured to a larger value, for example: the length of the RLC reassembly timer is configured as the signal transmission delay between the ground location furthest from the satellite and the network device within the ground range covered by the serving cell, while the adjustment period and adjustment step size of the terminal device side RLC reassembly timer length are configured as 0.

For example, if the terminal device has not previously reported the location information to the network device, or when the location information of the terminal device is changed, the terminal device reports the location information to the network device. Correspondingly, the network device can adjust the initial duration and/or adjustment period and/or adjustment step length of the RLC reassembly timer of the terminal device by combining the position information reported by the terminal device and the motion rule of the satellite, and then indicate the initial duration and/or adjustment period and/or adjustment step length 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 well match the signal transmission delay between the terminal device and the network device, and premature or too 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 length of the RLC reassembly timer.

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

The RLC reassembly timer may be enabled only after the terminal device receives the downlink transmission information, so 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 of the terminal device in S202 may be implemented as follows:

And determining the time length of the RLC reorganization 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 the signal transmission delay between the terminal device and the network device and the change rule of the signal transmission delay based on the location information of the terminal device, the motion rule of the satellite, and the current location 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 is not aware of 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 length of the RLC reassembly timer, the network device may configure the length of the RLC reassembly timer on the terminal device side to be a larger value.

For example, the length of the RLC reassembly timer is configured as the signal transmission delay between the ground location furthest from the satellite and the network equipment within the ground range covered by the serving cell.

Further, if the terminal device does not report the location information to the network device, or when 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 higher matching degree by combining the location of the terminal device.

Fig. 5 is a schematic flow chart of a second embodiment of an information processing method according to the present application on the basis of the foregoing embodiment of 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 reorganization timer at the current downlink transmission time.

In the embodiment of the application, the network equipment determines and indicates the configuration information of the RLC reassembly timer, and the network equipment can determine the configuration information of the RLC reassembly timer at each downlink transmission time because the network equipment can send the configuration information of the RLC reassembly timer and the downlink scheduling information to the terminal equipment together on the downlink control channel.

S502, the network equipment judges whether the configuration information of the RLC reorganization timer changes according to the configuration information of the RLC reorganization 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 then determine whether to issue the configuration information to the terminal device according to the determination result.

S503, 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 of 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 current downlink transmission time are not changed, 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 utilization rate of resources.

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 the configuration information of the RLC reassembly timer is not carried in the downlink transmission process at the current downlink transmission time when the configuration information of the RLC reassembly timer does not change, unnecessary resource waste is reduced, and the resource utilization rate of the downlink transmission process is improved.

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

Fig. 6 is a schematic flow chart of a third embodiment of an information processing method according to the present application. The method execution subject is a terminal device. Under the condition that the terminal equipment has the downlink HARQ feedback function and the HARQ retransmission function closed and the RLC mode of the RLC entity is determined, the terminal equipment can determine the configuration information of the RLC reassembly timer corresponding to the RLC mode according to the RLC mode of the RLC entity and determine the timer information of the RLC reassembly timer. Optionally, the terminal device may learn 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 RLC reassembly timer length according to the change rule of the delay. Referring to fig. 6, the information processing method may include the steps of:

S601, when the downlink HARQ feedback function and the HARQ retransmission function are 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 of TM, UM, or AM.

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

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

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

The RLC mode of the RLC entity may be specifically, for example, 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 learn 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 automatically adjust the RLC reassembly timer duration.

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

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

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

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

In this embodiment, since the change rule of the signal transmission delay between the terminal device and the network device is multiple, the terminal device may configure the duration of the RLC reassembly timer based on a preset rule.

In this embodiment, according to the change rule of the signal transmission delay between the terminal device and the network device, the step A2 may be implemented in the following ways:

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

Optionally, fig. 7 is a schematic diagram of a gradual increase in signal transmission delay between the terminal device and the network device. As shown in fig. 7 (a), during the period when the current satellite provides communication services for the terminal device, as the satellite moves, the satellite gradually moves away from the terminal device, that is, the change 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 increases, and the schematic diagram of the change of the signal transmission delay and the time is shown in fig. 7 (b).

In this case, since the signal transmission delay between the terminal device and the network device becomes gradually larger, the network device transmits to the terminal device a plurality of data segments, the time for which the data segments are sequentially transmitted is longer than the time for which the data segments are sequentially transmitted before, if the terminal device receives the data segments which are sequentially received before, the data segments which are sequentially received before are considered to be lost, and at this time, the data segments which are sequentially received before do not need to wait for any more, 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 when the network device provides service for the terminal device, if the signal transmission delay between the terminal device and the network device becomes smaller gradually, the duration of the RLC reassembly timer is determined to be the difference between the maximum transmission delay and the current transmission delay.

Wherein the maximum transmission delay is the maximum delay of signal transmission between the network device and the terminal device during the service providing period, and the network device is a satellite for providing service for the terminal device currently; the current transmission delay is a delay of signal transmission between the network device and the terminal device at the current time.

Fig. 8 is a schematic diagram illustrating gradual decrease of signal transmission delay between a terminal device and a network device. As shown in fig. 8 (a), during the period when the current satellite provides communication service for the terminal device, as the satellite moves, the satellite gradually approaches the terminal device, that is, the change 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 the schematic diagram of the change of the delay and the time curve is shown in fig. 8 (b).

In this case, since the signal transmission delay between the terminal device and the network device becomes smaller gradually, the network device transmits a plurality of data segments to the terminal device, the time for transmitting the data segments in the order before is longer than the time for transmitting the data segments in the order after, if the terminal device receives the data segments in the order before, the terminal device does not receive the data segments in the order before yet, a period of time can be waited for, and the longest time waiting at this time, namely, the time delay of the data segments in the order after, so the terminal device determines that the configuration information of the RLC reassembly timer is that the duration of the RLC reassembly timer is the difference between the maximum transmission delay and the current transmission delay.

As yet another example, during the period when the network device is providing service for the terminal device, if the signal transmission delay between the terminal device and the network device is not unidirectional, the length of the RLC reassembly timer is determined to be the 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 is already experienced by the network equipment between the service providing period and the terminal equipment, the network equipment is a satellite which is currently providing service for the terminal equipment, and the current transmission delay is the delay of signal transmission between the network equipment and the terminal equipment at the current moment.

Fig. 9 is a schematic diagram of a signal transmission delay between a terminal device and a network device becoming smaller and larger. As shown in fig. 9 (a), during the period when the current satellite provides communication services 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 change 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 decreases and then gradually increases, and the schematic diagram of the curve change of the delay and the time is shown in fig. 9 (b).

It will be appreciated that in the embodiment of the present application, the signal transmission delay between the terminal device and the network device is not unidirectional, and may also include other types of change rules, for example, forms of first becoming larger and then smaller, or first becoming larger and then smaller, and finally becoming larger. The embodiment of the application is not limited to the concrete form of non-unidirectional variation, and can be determined according to actual conditions.

For this case, when the signal transmission delay between the terminal device and the network device is a non-unidirectional change, for example, it becomes smaller and larger gradually. In the period that the signal transmission time delay between the terminal equipment and the network equipment gradually becomes smaller, the network equipment transmits a plurality of data segments to the terminal equipment, the time for transmitting the data segments in front of the sequence is longer than the time for transmitting the data segments in back of the sequence, if the terminal equipment receives the data segments in back of the sequence and does not receive the data segments in front of the sequence yet, the terminal equipment can wait for a period of time, and the longest waiting time is the time delay of the data segments in back of the sequence; in the period that the signal transmission delay between the terminal device and the network device gradually increases, the network device transmits to the terminal device a plurality of data segments, the time for which the data segments are sequentially transmitted to the terminal device is longer than the time for which the data segments are sequentially transmitted to the terminal device before the data segments are received by the terminal device, and the terminal device does not know at this time whether the data segments are transmitted during the period that the signal transmission delay between the terminal device and the network device gradually decreases or during the period that the signal transmission delay between the terminal device and the network device gradually increases, so the terminal device 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 the difference between the current maximum transmission delay and the current transmission delay.

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

S603, the terminal equipment determines the timer information of the RLC reassembly timer according to the configuration information of the RLC reassembly 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 running 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 step S603, the method may further include the following steps:

s604, the terminal equipment adjusts the time length of the RLC reassembly timer according to the timer information of the RLC reassembly timer.

For a specific implementation of this step, reference may be made to S604 in the embodiment shown in fig. 2, which is not described herein.

when the RLC reassembly timer is determined to meet a starting condition, the starting condition is that at least one bit positioned before the first data is not received yet when the first data is received, and the RLC reassembly timer is not currently in an operating state.

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

Optionally, when the signal transmission delay between the terminal device and the network device becomes smaller, the terminal device may start/restart the RLC reassembly timer at any time when the RLC reassembly timer is started/restarted, 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 equipment.

Optionally, when the signal transmission delay between the terminal device and the network device is not unidirectional, the terminal device may start/restart the RLC reassembly timer at any starting/restarting time that satisfies the RLC reassembly timer, where the duration of the RLC reassembly timer is the difference between the current maximum transmission delay and the current transmission delay.

It can be appreciated that the specific implementation principle of S604 is similar to that of S205 in the embodiment shown in fig. 2, and the specific implementation principle of the terminal device for starting and/or restarting the RLC reassembly timer is also similar, and specific reference may be made to the description in the embodiment shown in fig. 2, which is not repeated herein.

The information processing method provided by the embodiment of the application comprises the steps that when a downlink HARQ feedback function and an HARQ retransmission function are closed, the terminal equipment determines the RLC mode of an RLC entity, determines the configuration information of an 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 reassembly timer, and maintain and use the RLC reassembly timer, so that the time length of the RLC reassembly timer can be more accurately matched with the change of the signal transmission delay between the terminal equipment and the network equipment, and the problem that the user experience is affected due to premature or too late RLC packet loss or RLC retransmission caused by improper time length configuration of the RLC reassembly timer is avoided.

In summary, the embodiments of the present application provide an information processing method, which is actually a method for dynamically adjusting the duration of a terminal RLC reassembly timer in NTN under the condition of closing a downlink HARQ feedback function and closing HARQ retransmission, whether the network equipment configures the information of the RLC reassembly timer of the terminal equipment side or the terminal equipment side determines the information of the RLC reassembly timer by itself, so that the duration of the RLC reassembly timer of the terminal equipment side can well match the change of signal transmission delay between the terminal equipment and the network equipment, and the RLC reassembly timer maintained by using the method can avoid the problem of premature or too late RLC packet loss or RLC retransmission caused by improper duration configuration of the RLC reassembly timer, thereby improving the service experience of users.

The foregoing describes a specific implementation of an information processing method according to an embodiment of the present application, and the following is an embodiment of an apparatus according to the present application, which may be used to execute an embodiment of the method according to the present application. For details not disclosed in the embodiments of the apparatus of the present application, please refer 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 application. The device can be integrated in the terminal equipment or 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 the radio link control RLC entity when both the downlink hybrid automatic repeat request HARQ feedback function and the 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 configuration information of the RLC reassembly timer.

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

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

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

In still another possible design of the embodiment of the present application, the processing module 1002 is further configured to start the RLC reassembly timer when it is determined that the RLC reassembly timer meets a starting condition, where the starting condition is that at least one bit located before the first data has not been received when the first data is received, and the RLC reassembly timer is not currently in an running state.

As an example, the configuration information of the RLC reassembly timer includes: when the initial time length, the adjustment period and the adjustment step length of the RLC reassembly timer are, the starting time length of the RLC reassembly timer is the time of starting the RLC reassembly timer.

As another example, the configuration information at the RLC reassembly timer includes: and when the time length of the RLC reorganization timer is the time length of the RLC reorganization timer which is received by the terminal equipment last time, the starting time length of the RLC reorganization timer is the time length of the RLC reorganization 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 the following: downlink acknowledged mode DL AM, downlink unacknowledged mode DL UM.

The device 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 its implementation principle and technical effects are similar, and are not repeated here.

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

The processing module 1101 is configured to determine an RLC mode of a radio link control RLC entity when both the downlink hybrid automatic repeat request HARQ feedback function and the HARQ retransmission function 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 a terminal device.

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 location information of the terminal device, a motion rule of a satellite, and current location information of the satellite.

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

the processing module 1101 is specifically configured to determine an 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 an adjustment period and an adjustment step size of the RLC reassembly timer according to the location information of the terminal device and a motion rule of the satellite.

In this possible design of this embodiment, the sending module 1102 has a control unit MAC CE for controlling RRC signaling or medium access, and sends configuration information of the RLC reassembly timer to the terminal device.

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

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

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

In another possible design of the embodiment of the present application, 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 not carry the configuration information of the RLC reassembly timer in a downlink transmission process at the current downlink transmission time when the configuration information of the RLC reassembly timer does not change.

In yet another possible design of the embodiment of the present application, 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.

The device 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 its implementation principle and technical effects are similar, and are not repeated here.

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 or 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 the radio link control RLC entity when both the downlink hybrid automatic repeat request HARQ feedback function and the HARQ retransmission function are turned off;

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

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

In one 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, specifically:

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

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

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

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

As yet 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, specifically:

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

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

In another possible design of the embodiment of the present application, the processing module 1202 is further configured to start the RLC reassembly timer when it is determined that the RLC reassembly timer meets a starting condition, where the starting condition is that at least one bit located before the first data has not been received when the first data is received, and the RLC reassembly timer is not currently in an operating state.

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

The device provided in this embodiment is configured to execute the technical solution on the terminal device side in the embodiment shown in fig. 6, and its implementation principle and technical effects are similar, and are not repeated herein.

It should be noted that, it should be understood that the division of the modules of the above apparatus is merely a division of a logic function, and may be fully or partially integrated into a physical entity or may be physically separated. And these modules may all be implemented in software in the form of calls by the processing element; or can be realized in hardware; the method can also be realized in a form of calling software by a processing element, and the method can be realized in a form of hardware by a part of modules. For example, the processing module may be a processing element that is set up separately, may be implemented in a chip of the above apparatus, or may be stored in a memory of the above apparatus in the form of program code, and may be called by a processing element of the above apparatus to execute the functions of the above determination module. The implementation of the other modules is similar. In addition, all or part of the modules can be integrated together or can be independently implemented. 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 a software form.

For example, the modules above may be one or more integrated circuits configured to implement the methods above, such as: one or more specific integrated circuits (application specific integrated circuit, ASIC), or one or more microprocessors (digital signal processor, DSP), or one or more field programmable gate arrays (field programmable gate array, FPGA), or the like. For another example, when a module above is 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 (central processing unit, CPU) or other processor that may invoke the program code. For another example, the modules may be integrated together and implemented in the form of a system-on-a-chip (SOC).

In the above embodiments, it may be implemented in whole or in part 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, produces a flow or function in accordance with embodiments of the present application, in whole or in part. The computer may be a general purpose computer, a special purpose computer, a computer network, or other programmable apparatus. The computer instructions may be stored in or transmitted from one computer-readable storage medium to another, for example, by wired (e.g., coaxial cable, optical fiber, digital Subscriber Line (DSL)), or wireless (e.g., infrared, wireless, microwave, etc.). The computer readable storage medium may be any available medium that can be accessed by a computer or a data storage device such as a server, data center, etc. that contains an integration of 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)), etc.

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

Wherein the memory 1302 stores computer-executable instructions;

processor 1301 executes the computer-executable instructions stored in memory 1302, so that processor 1301 executes the technical solution on the network device side in the embodiment shown in fig. 2 or fig. 3 as described above.

Fig. 14 is a schematic structural diagram of a first embodiment of a terminal device provided by 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 a terminal device.

Wherein the memory 1402 stores computer-executable instructions;

the processor 1401 executes the computer-executable instructions stored in the memory 1402, so that the processor 1401 executes the technical solution on the terminal device side in the embodiment shown in fig. 2 or fig. 3 as described above.

Fig. 15 is a schematic structural diagram of a second embodiment of a terminal device according to the present application. As shown in fig. 15, the terminal device may include: the system 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 communication with each other, 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 on the terminal device side in the embodiment shown in fig. 6 is realized when the processor 1501 executes the computer execution instructions.

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

The present application also provides a computer readable storage medium, in which computer executable instructions are stored, for implementing the technical solution on the terminal device side in the embodiment shown in fig. 2 or fig. 3 when the computer executable instructions are executed by a processor.

The present application also provides a computer readable storage medium, in which computer executable instructions are stored, for implementing the technical solution on the terminal device side in the embodiment shown in fig. 6, when the computer executable instructions are executed by a processor.

The embodiment of the present application further provides a program, when executed by a processor, for executing the technical solution on the network device side (base station, communication satellite) in the embodiment shown in fig. 2 or fig. 3.

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

The embodiment of the application also provides a computer program product, which comprises program instructions for implementing the technical scheme of the network equipment side (base station, communication satellite) in the embodiment shown in the foregoing fig. 2 or fig. 3.

The embodiment of the application also provides a computer program product, which comprises program instructions for implementing the technical scheme on the terminal equipment side in the embodiment shown in fig. 2 or fig. 3.

The embodiment of the application also provides a computer program product, which comprises program instructions for implementing the technical scheme of the terminal equipment side in the embodiment shown in fig. 6.

The embodiment of the application also provides a chip, which comprises: the processing module and the communication interface, the processing module can execute the technical solution on 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 the instructions, and the processing module is configured to execute the instructions stored in the storage module, and 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 embodiment shown in fig. 2 or fig. 3.

The embodiment of the application also provides a chip, which comprises: the processing module and the communication interface, the processing module can execute the technical scheme on 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 the instruction, and the processing module is configured to execute the instruction stored in the storage module, and execution of the instruction stored in the storage module causes the processing module to execute the technical solution on the terminal device side in the embodiment shown in fig. 2 or fig. 3.

The embodiment of the application also provides a chip, which comprises: the processing module and the communication interface, the processing module can execute the technical scheme 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 the instruction, and the processing module is configured to execute the instruction stored in the storage module, and execution of the instruction stored in the storage module causes the processing module to execute the technical solution on the terminal device side in the embodiment shown in fig. 6.

In the present application, "at least one" means one or more, and "a plurality" means two or more. "and/or", describes an association relationship of an association object, and indicates that there may be three relationships, for example, a and/or B, and may indicate: a alone, a and B together, and B alone, wherein a, B may be singular or plural. The character "/" generally indicates that the front and rear associated objects are an "or" relationship; in the formula, the character "/" indicates that the front and rear associated objects are a "division" relationship. "at least one of" or the like means any combination of these items, including any combination of single item(s) or plural items(s). 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 plural.

It will be appreciated that the various numerical numbers referred to in the embodiments of the present application are merely for ease of description and are not intended to limit the scope of the embodiments of the present application. The sequence numbers of the above-mentioned processes do not mean the sequence of execution sequence, and the execution sequence of each process should be determined by its functions and internal logic, and should not constitute any limitation on the implementation process of the embodiment of the present application.

Claims

1. An information processing method, characterized by comprising:

the terminal equipment determines the timer information of the RLC reorganization timer according to the configuration information of the RLC reorganization timer;

wherein the method further comprises:

and when the terminal equipment determines that the RLC reassembly timer meets a starting condition, starting the RLC reassembly timer, wherein the starting condition is that when first data are received, at least one bit positioned before the first data is not received yet, and the RLC reassembly timer is not in a running state currently.

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

and the terminal equipment adjusts the duration of the RLC reassembly timer according to the timer information of the RLC reassembly timer.

3. 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 length of the RLC reassembly timer.

4. The method of claim 3, wherein the terminal device adjusts the duration of the RLC reassembly timer based on the timer information of the RLC reassembly timer, comprising:

and the terminal equipment takes the initial time length of the RLC reassembly timer as the initial time length, and periodically adjusts the time length of the RLC reassembly timer according to the adjustment period and the adjustment step length of the RLC reassembly timer.

5. The method of claim 1, wherein the configuration information of the RLC reassembly timer comprises: and the length of the RLC reassembly timer.

6. The method according to any one of claims 1-5, wherein when 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, a starting duration of the RLC reassembly timer is a time at which the RLC reassembly timer is started.

7. The method according to any of claims 1-5, wherein when the configuration information of the RLC reassembly timer includes a duration of the RLC reassembly timer, a starting duration of the RLC reassembly timer is a duration of the RLC reassembly timer that was last received by the terminal device.

8. The method according to any of claims 1-5, wherein the RLC mode comprises any of: downlink acknowledged mode DL AM, downlink unacknowledged mode DL UM.

9. An information processing method, characterized by comprising:

the network equipment sends configuration information of the RLC reassembly timer to the terminal equipment, so that the terminal equipment determines the timer information of the RLC reassembly timer according to the configuration information of the RLC reassembly timer; the RLC reassembly timer is started when the terminal equipment determines that the RLC reassembly timer meets a starting condition, wherein the starting condition is that when the terminal equipment receives first data, at least one bit located before the first data is not received yet, and the RLC reassembly timer is not currently in an operating state.

10. The method of claim 9, wherein the configuration information of the RLC reassembly timer comprises: the initial duration, the adjustment period and the adjustment step length of the RLC reassembly timer.

11. The method according to claim 10, wherein the network device determining configuration information of the RLC reassembly timer at the terminal device side comprises:

the network equipment determines the configuration information of the RLC reorganization timer according to the position information of the terminal equipment, the motion rule of the satellite and the current position information of the satellite.

12. The method of claim 11, wherein the network device determining the configuration information of the RLC reassembly timer based on the location information of the terminal device, the motion law of the satellite, and the current location information of the satellite comprises:

the network equipment determines the initial duration of the RLC reorganization 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 reorganization timer according to the position information of the terminal equipment and the motion rule of the satellite.

13. The method according to any of claims 10-12, wherein the network device sending configuration information of the RLC reassembly timer to the terminal device comprises:

the network equipment sends the configuration information of the RLC reorganization timer to the terminal equipment through a Radio Resource Control (RRC) signaling or a medium access control (MAC CE).

14. The method of claim 9, wherein the configuration information of the RLC reassembly timer comprises: and the length of the RLC reassembly timer.

15. The method according to claim 14, wherein the network device determining configuration information of the RLC reassembly timer at the terminal device side comprises:

and the network equipment determines the time length of the RLC reorganization timer according to the position information of the terminal equipment, the motion rule of the satellite and the current position information of the satellite.

16. The method according to claim 14 or 15, wherein the network device sending configuration information of the RLC reassembly timer to the terminal device comprises:

and the network equipment sends the configuration information of the RLC reorganization timer to the terminal equipment through a downlink control channel or a control unit MAC CE of medium access control.

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

the network equipment determines configuration information of the RLC reorganization timer at the current downlink transmission time;

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;

and when the configuration information of the RLC reassembly timer is unchanged, the network equipment does not carry the configuration information of the RLC reassembly timer in the downlink transmission process of the current downlink transmission time.

18. The method according to claim 10 or 14, wherein the configuration information of the RLC reassembly timer is predefined or determined according to a preset rule.

19. The method according to any of claims 9-12 and 14-15, wherein the RLC mode comprises any of the following: downlink acknowledged mode DL AM, downlink unacknowledged mode DL UM.

20. An information processing method, characterized by comprising:

wherein the method further comprises:

21. The method according to claim 20, wherein after the terminal device determines the timer information of the RLC reassembly timer from the configuration information of the RLC reassembly timer, the method further comprises:

22. The method of claim 20 wherein the terminal device determining configuration information for the RLC reassembly timer corresponding to the RLC mode comprises:

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

and the terminal equipment determines the configuration information of the RLC reassembly timer according to the change rule of the signal transmission delay between the terminal equipment and the network equipment.

23. The method according to claim 22, wherein the determining, by the terminal device, the configuration information of the RLC reassembly timer according to a change rule of a signal transmission delay between the terminal device and the network device, comprises:

and during the period that the network equipment provides service for the terminal equipment, if the signal transmission time delay between the terminal equipment and the network equipment gradually becomes larger, the terminal equipment determines that the time length of the RLC reorganization timer is 0, and the network equipment is a satellite for providing service for the terminal equipment at present.

24. The method according to claim 22, wherein the determining, by the terminal device, the configuration information of the RLC reassembly timer according to a change rule of a signal transmission delay between the terminal device and the network device, comprises:

During the period that 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 reorganization timer is the difference value between the maximum transmission time delay and the current transmission time delay;

25. The method according to claim 22, wherein the determining, by the terminal device, the configuration information of the RLC reassembly timer according to a change rule of a signal transmission delay between the terminal device and the network device, comprises:

during the period that 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 that the time length of the RLC reassembly timer is the difference value between the current maximum transmission time delay and the current transmission time delay;

26. The method according to any of claims 20-25, wherein the RLC mode comprises any of: downlink acknowledged mode DL AM, downlink unacknowledged mode DL UM.

27. An information processing apparatus, characterized by comprising: the device comprises an acquisition module and a processing module;

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

the processing module is further configured to start the RLC reassembly timer when it is determined that the RLC reassembly timer meets a start condition, where the start condition is that, when first data is received, at least one bit located before the first data is not yet received, and the RLC reassembly timer is not currently in an operating state.

28. The apparatus of claim 27 wherein the processing module is further configured to adjust a 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.

29. The apparatus of claim 28, wherein the configuration information of the RLC reassembly timer comprises: the initial duration, the adjustment period and the adjustment step length of the RLC reassembly timer.

30. The apparatus of claim 29, 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 length of the RLC reassembly timer by using the initial duration of the RLC reassembly timer as a starting duration.

31. The apparatus of claim 27, wherein the configuration information of the RLC reassembly timer comprises: and the length of the RLC reassembly timer.

32. The apparatus of any of claims 27-31, wherein when 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, a starting duration of the RLC reassembly timer is a time at which the RLC reassembly timer is started.

33. The apparatus according to any of claims 27-31, wherein when the configuration information of the RLC reassembly timer includes a duration of the RLC reassembly timer, a starting duration of the RLC reassembly timer is a duration of the RLC reassembly timer last received by the terminal device.

34. The apparatus of any of claims 27-31, wherein the RLC mode comprises any of: downlink acknowledged mode DL AM, downlink unacknowledged mode DL UM.

35. An information processing apparatus, characterized by comprising: the processing module and the sending module;

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

the sending module is configured to send configuration information of the RLC reassembly timer to a terminal device, so that the terminal device determines timer information of the RLC reassembly timer according to the configuration information of the RLC reassembly timer; the RLC reassembly timer is started when the terminal equipment determines that the RLC reassembly timer meets a starting condition, wherein the starting condition is that when the terminal equipment receives first data, at least one bit located before the first data is not received yet, and the RLC reassembly timer is not currently in an operating state.

36. The apparatus of claim 35, wherein the configuration information of the RLC reassembly timer comprises: the initial duration, the adjustment period and the adjustment step length of the RLC reassembly timer.

37. The apparatus according to claim 36, wherein the processing module is configured to determine configuration information of the RLC reassembly timer corresponding to the RLC mode, specifically:

the processing module is specifically configured to determine 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.

38. The apparatus of claim 37, wherein the processing module is configured to determine the configuration information of the RLC reassembly timer according to the location information of the terminal device, the motion law of the satellite, and the current location information of the satellite, specifically:

the processing module is specifically configured to determine an 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 an adjustment period and an adjustment step size of the RLC reassembly timer according to the location information of the terminal device and a motion rule of the satellite.

39. The apparatus according to any of the claims 36-38, wherein the transmitting module is provided with a control unit MAC CE for transmitting configuration information of the RLC reassembly timer to the terminal device via radio resource control, RRC, signaling or medium access control.

40. The apparatus of claim 35, wherein the configuration information of the RLC reassembly timer comprises: and the length of the RLC reassembly timer.

41. The apparatus of claim 40, wherein the processing module is configured to determine configuration information of the RLC reassembly timer at the terminal device side, specifically:

the processing module is specifically configured to determine a duration 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.

42. The apparatus according to claim 40 or 41, wherein the transmitting module has a control unit MAC CE for controlling via a downlink control channel or medium access, and transmits configuration information of the RLC reassembly timer to the terminal device.

43. The apparatus of claim 42, 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 based on the configuration information of the RLC reassembly timer at the previous downlink transmission time and the configuration information of the current downlink transmission time, and not carry the configuration information of the RLC reassembly timer during downlink transmission at the current downlink transmission time when the configuration information of the RLC reassembly timer has not changed.

44. The apparatus of claim 36 or 40, wherein the configuration information of the RLC reassembly timer is predefined or determined according to a preset rule.

45. The apparatus of any of claims 35-38 and 40-41, wherein the RLC mode comprises any of: downlink acknowledged mode DL AM, downlink unacknowledged mode DL UM.

46. An information processing apparatus, characterized by comprising: a determining module and a processing module;

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

47. The apparatus of claim 46 wherein the processing module is further configured to adjust a 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.

48. The apparatus of claim 46, wherein the processing module is configured to determine configuration information for the RLC reassembly timer corresponding to the RLC mode, specifically:

the processing module is specifically configured to determine a change rule of a 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 the signal transmission delay between the terminal device and the network device.

49. The apparatus of claim 48, wherein the processing module is configured to determine configuration information of the RLC reassembly timer based on a change rule of signal transmission delay between the terminal device and the network device, specifically:

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

50. The apparatus of claim 48, wherein the processing module is configured to determine configuration information of the RLC reassembly timer based on a change rule of signal transmission delay between the terminal device and the network device, specifically:

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

51. The apparatus of claim 48, wherein the processing module is configured to determine configuration information of the RLC reassembly timer based on a change rule of signal transmission delay between the terminal device and the network device, specifically:

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

52. The apparatus of any of claims 46-51, wherein the RLC mode comprises any of: downlink acknowledged mode DL AM, downlink unacknowledged mode DL UM.

53. A terminal device, comprising:

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

the memory stores computer-executable instructions;

the processor executing computer-executable instructions stored in the memory, causing the processor to perform the method of any one of claims 1-8.

54. A network device, comprising:

the memory stores computer-executable instructions;

the processor executing computer-executable instructions stored in the memory, causing the processor to perform the method of any one of the preceding claims 9-19.

55. A terminal device, comprising: a processor, a memory and computer program instructions stored on the memory and executable on the processor, which processor, when executing the computer program instructions, implements the method of any of the preceding claims 20-26.

56. A computer readable storage medium having stored therein computer executable instructions for implementing the method of any of claims 1-8 when the computer executable instructions are executed by a processor.

57. A computer readable storage medium having stored therein computer executable instructions for implementing the method of any of claims 9-19 when the computer executable instructions are executed by a processor.

58. A computer readable storage medium having stored therein computer executable instructions for implementing the method of any of claims 20-26 when the computer executable instructions are executed by a processor.