WO2021243492A1 - Data reordering method and communication apparatus - Google Patents

Abstract

Provided are a data reordering method and a communication apparatus, which are applied to a scenario where the reorganization and reordering of a receiving end are realized by means of different layers. The method may comprise: a network device sending an RRC reconfiguration message to a terminal device, wherein the RRC reconfiguration message carries an initial time length of a reordering timer and bit length information of a serial number of a data bearer; and the terminal device updating, when same has received the RRC configuration message, the time length of the reordering timer according to the bit length information of the serial number and the signal quality of the terminal device, and reordering a PDCP data packet corresponding to the data bearer according to the updated time length of the reordering timer. By using the present application, a terminal device can dynamically adjust the time length of a reordering timer according to signal quality, such that the stability and the real-time performance of data transmission can be improved.

Description

Data reordering method and communication device Technical field

This application relates to the field of communication technology, and in particular to a data reordering method and a communication device.

Background technique

In the long-term evolution (LTE) system, the layer 2 (layer 2, L2) structure can include the medium access control (MAC) layer, the radio link control (RLC) layer, and the Packet Data Convergence Protocol (PDCP) layer. The MAC layer downlink is mainly responsible for matching logical channels and transmission channels, and error correction is performed through hybrid automatic repeat request (HARQ); the RLC layer is mainly responsible for error correction through retransmission feedback (applicable to (acknowledged mode, AM) ) Mode), reorganize the RLC service data unit (service data unit, SDU), and reorder the RLC protocol data unit (protocol data unit, PDU); the PDCP layer downstream is mainly responsible for header decompression, decryption, and integrity protection.

In a new radio (NR) system, the L2 structure may also include a MAC layer, an RLC layer, and a PDCP layer. However, in the NR system, the RLC layer does not reorder RLC PDUs in the downlink. In addition to header decompression, decryption and integrity protection, the PDCP layer can also be responsible for data reordering, such as in non-handover scenarios and dual-connection scenarios. The lower PDCP layer may be responsible for data reordering.

It can be seen that in the LTE system, reorganization and reordering are both at the RLC layer; while in the NR system, reorganization is at the RLC layer, and reordering is at the PDCP layer. Reorganization and reordering involve different layers, which may affect the stability and real-time performance of data transmission. Therefore, how to improve the stability and real-time performance of data transmission is a technical problem to be solved urgently.

Summary of the invention

The present application provides a data reordering method and communication device, which can improve the stability and real-time performance of data transmission.

The first aspect of the present application provides a data reordering method, which can be applied to scenarios where the reorganization and reordering of terminal devices are implemented through different layers. The method may be executed by a terminal device, or may be executed by a device (such as a processor or a chip, etc.) in the terminal device. Exemplarily, taking terminal device execution as an example, the method includes the following content.

The terminal device receives a radio resource control (RRC) reconfiguration message from a network device, where the RRC reconfiguration message carries the initial duration of the reordering timer and the bit length information of the sequence number carried by the data; according to the sequence The bit length information of the number and the signal quality of the terminal equipment, the duration of the reordering timer is updated; according to the updated duration of the reordering timer, the packet data aggregation protocol (packet data convergence protocol) corresponding to the data bearer is updated. Data Convergence Protocol, PDCP) data packets are reordered.

In the first aspect of the present application, the terminal device can dynamically update the duration of the reordering timer according to the bit length information and signal quality of the serial number, so that the stability and real-time performance of data transmission can be improved.

In a possible implementation manner, the terminal device may update the duration of the reordering timer according to the mapping relationship between the bit length information of the sequence number and the signal quality. Different bit lengths of the serial number correspond to different mapping relationships. The terminal device updates the duration of the reordering timer from the initial duration to the duration corresponding to the signal quality of the terminal device according to the mapping relationship between the bit length information of the sequence number and the signal quality. The terminal device updates the duration of the reordering timer through the mapping relationship, which is easy to implement.

Among them, the mapping relationship may be a pre-configured or customized mapping relationship. The mapping relationship may be a mapping table, for example.

In a possible implementation manner, the terminal device may determine the duration corresponding to the signal quality of the terminal device according to the mapping relationship between the bit length information of the serial number and the signal quality, and receive the signal in the PDCP receiving window. When the number of received PDCP data packets exceeds the threshold, the duration corresponding to the signal quality of the terminal device is shortened, and the duration of the reordering timer is updated from the initial duration to that corresponding to the shortened signal quality of the terminal device duration. When the number of PDCP packets received in the PDCP receiving window exceeds the threshold, if the duration of the reordering timer is directly updated to the duration corresponding to the signal quality of the terminal device, the duration of the reordering timer may still be too long. Updating the duration of the reordering timer to the duration corresponding to the signal quality of the shortened terminal device is beneficial to further improving the stability and real-time performance of data transmission.

In a possible implementation manner, the shortened level of the duration corresponding to the signal quality of the terminal device in the mapping relationship, and the level of the duration corresponding to the signal quality of the terminal device in the mapping relationship Adjacent, this is so that the duration of the reordering timer after the update does not differ too much from the duration corresponding to the signal quality of the terminal device, so as to avoid that the duration of the reordering timer after the update is too short.

In a possible implementation manner, the above threshold is related to the bit length information of the serial number, and the bit length information of the serial number is 12 bits or 18 bits. For example, if the bit length information of the serial number is 12 bits, the threshold can be two ^{-thirds of 2 12} ; if the bit length information of the serial number is 18 bits, then the threshold can be two-thirds ^{of 2 18.}

In a possible implementation manner, the terminal device obtains the signal quality of the terminal device from the physical layer of the terminal device. The physical layer of the terminal device can obtain the signal quality of the terminal device through a signal measurement process, and the physical layer of the terminal device reports the measured signal quality to layer 2 of the terminal device so that the terminal device can obtain the signal quality of the terminal device. Layer 2 updates the duration of the reordering timer according to the foregoing mapping relationship.

In a possible implementation manner, when the terminal device is in a static state, the terminal device can obtain the signal quality of the terminal device from the physical layer of the terminal device once, without multiple acquisitions, which can save Power consumption and signaling overhead. The terminal device may report the signal quality of the terminal device obtained in a static state to the network device, so that the network device can update the duration of the reordering timer on the network device side according to the foregoing mapping relationship.

In a possible implementation manner, when the terminal device is in a mobile state, the terminal device periodically obtains the signal quality of the terminal device from the physical layer of the terminal device, so that the terminal device can The duration of the reordering timer is updated in real time. The terminal device may periodically report the signal quality of the terminal device to the network device.

In a possible implementation manner, the terminal device updates the duration of the reordering timer when it is started with the duration indicated by the RRC reconfiguration message and times out. In this way, the conflict of the reordering timer can be avoided.

In a possible implementation manner, the aforementioned signal quality may include one or more of the following: reference signal received power RSRP, signal-to-noise ratio SINR, reference signal received quality RSRQ, or received signal strength indicator RSSI.

The second aspect of the present application provides a data reordering method, which can be applied to a scenario where the reorganization and reordering of network devices are implemented through different layers. The method may be executed by a network device, or may be executed by a device (such as a processor or a chip, etc.) in the network device. Exemplarily, taking network device execution as an example, the method includes the following content.

The network device updates the duration of the reordering timer according to the bit length information of the serial number carried by the data and the signal quality of the terminal device; and according to the updated duration of the reordering timer, carries the corresponding PDCP data packet to the data Perform reordering.

In the second aspect of the present application, the network device can dynamically update the duration of the reordering timer according to the bit length information and signal quality of the serial number, thereby improving the stability and real-time performance of data transmission.

For the process of updating the duration of the reordering timer by the network device according to the bit length information of the serial number and the signal quality of the terminal device, refer to the first aspect, the terminal device updating the duration of the reordering timer the process of.

In a possible implementation manner, the network device receives the signal quality of the terminal device from the terminal device, so that the network device can update the duration of the reordering timer. The terminal device may report periodically, indicating that the terminal device is in a mobile state, and the network device may periodically update the duration of the reordering timer; the terminal device may report once, indicating that the terminal device is in a static state.

In a possible implementation manner, the network device sends an RRC reconfiguration message to the terminal device, and the RRC reconfiguration message carries the initial duration of the reordering timer and the bits of the sequence number carried by the data. Length information, so that the terminal device can learn the initial duration of the reordering timer and the bit length information of the sequence number carried by the data. The initial duration is the duration of the reordering timer configured by the network device for the terminal device, that is, the duration used before the update.

In a possible implementation manner, the network device updates the duration of the reordering timer when it is started with the initial duration of the reordering timer and times out. In this way, the conflict of the reordering timer can be avoided.

The third aspect of the present application provides a communication device.

In a possible implementation manner, the communication device may be a terminal device or a device in a terminal device. In one design, the device may include a module corresponding to the method/operation/step/action described in the first aspect. The module may be a hardware circuit, software, or a combination of hardware circuit and software. In one design, the device may include a processing module and a transceiver module. Exemplary,

The transceiver module is configured to receive an RRC reconfiguration message from a network device, where the RRC reconfiguration message carries the initial duration of the reordering timer and the bit length information of the sequence number carried by the data;

The processing module is configured to update the duration of the reordering timer according to the bit length information of the sequence number and the signal quality of the terminal device; The packet data convergence protocol (packet data convergence protocol, PDCP) data packets corresponding to the data bearer are reordered.

In a possible implementation manner, the communication device may be a network device or a device in the network device.

In one design, the device may include a module corresponding to the method/operation/step/action described in the second aspect. The module may be a hardware circuit, software, or hardware circuit combined with software. In one design, the device may include a processing module. Exemplary,

The processing module is configured to update the duration of the reordering timer according to the bit length information of the serial number carried by the data and the signal quality of the terminal device; The corresponding PDCP data packets are reordered.

A fourth aspect of the present application provides a communication device, which includes a processor, configured to implement the method described in the first aspect or the second aspect. The device may also include a memory for storing instructions and data. The memory is coupled with the processor, and when the processor executes the instructions stored in the memory, the device can realize the method described in the first aspect or the second aspect. The device may also include a communication interface, which is used for the device to communicate with other devices. Illustratively, the communication interface may be a circuit hardware module such as a transceiver and a bus. In one possible design, the device includes:

Memory, used to store program instructions;

The processor is configured to receive an RRC reconfiguration message from a network device, where the RRC reconfiguration message carries the initial duration of the reordering timer and the bit length information of the sequence number carried by the data; according to the bit length information of the sequence number and For the signal quality of the terminal device, the duration of the reordering timer is updated; and the PDCP data packets corresponding to the data bearer are reordered according to the updated duration of the reordering timer.

A fifth aspect of the present application provides a computer-readable storage medium, including instructions, which when run on a computer, cause the computer to execute the method provided in the first aspect or the second aspect.

A sixth aspect of the present application provides a chip system. The chip system includes a processor and may also include a memory for implementing the method provided in the first or second aspect. The chip system can be composed of chips, or it can include chips and other discrete devices.

The seventh aspect of the present application provides a data reordering system, which includes the terminal device provided in the first aspect and the network device provided in the second aspect.

Description of the drawings

Figure 1 is a schematic diagram of the L2 structure in an LTE system;

Figure 2 is a schematic diagram of the L2 structure in the NR system;

Figure 3 is an example diagram of NR PDCP reordering;

Figure 4 is a schematic diagram of a network architecture applying an embodiment of the present application;

FIG. 5 is a schematic flowchart of a data reordering method provided by an embodiment of this application;

FIG. 6 is a schematic flowchart of another data reordering method provided by an embodiment of the application;

FIG. 7 is a schematic structural diagram of a communication device provided by an embodiment of this application;

FIG. 8 is a schematic structural diagram of another communication device provided by an embodiment of this application.

detailed description

In order to better understand the technical solutions provided by the embodiments of the present application, first introduce the technical terms involved in the embodiments of the present application.

(1) L2 structure in LTE system

The L2 structure in the LTE system can be seen in Figure 1, including the MAC layer, the RLC layer and the PDCP layer. Among them, the MAC layer downlink is mainly responsible for matching logical channels and transmission channels, and correcting errors through HARQ. The RLC layer downlink is mainly responsible for error correction through retransmission feedback, reorganization of RLC SDU, and reordering of RLC PDU. The PDCP layer downstream is mainly responsible for header decompression (such as robust header compression (ROHC)), decryption and integrity protection.

It is understandable that in the LTE system, the reorganization and reordering of data packets are both at the RLC layer, that is, the RLC layer can simultaneously realize the reorganization and reordering of data packets.

(2) L2 structure in NR system

The L2 structure in the NR system can be seen as shown in Figure 2, including the MAC layer, RLC layer, PDCP layer, and service data adaptation protocol (service data adaptation protocol, SDAP) layer. Among them, the MAC layer can refer to the description of the MAC layer in the LTE system. The RLC layer downlink is mainly responsible for error correction through retransmission feedback and reorganization of RLC SDUs, but does not reorder RLC PDUs. The PDCP layer downstream is mainly responsible for header decompression (for example, robust header compression (ROHC)), decryption and integrity protection, and can also be responsible for data packet reordering.

It is understandable that in the NR system, the reassembly of data packets is at the RLC layer, and the reordering of data packets is at the PDCP layer. That is, the reorganization and reordering of data packets are realized through different layers.

Among them, in the NR system, reassembly involves a reassembly timer, and reordering involves a reorder timer. The unreasonable setting of the two timers will cause the problem that the time cannot be applied during data transmission, thereby affecting the stability and real-time performance of data transmission.

For example, refer to the NR PDCP reordering example diagram shown in FIG. 3. In Figure 3, the PDCP receiving window represents the window used by the PDCP layer to receive PDCP data packets, and the PDCP layer receives the PDCP data packets in the PDCP receiving window. RX_DELIV is NPDCP RX_DELIV, which represents the count value of the first PDCP data packet (such as PDCP SDU) that is not delivered to the upper layer of the PDCP layer protocol but is still waiting. The initial value is 0, which is used to indicate the next to be delivered to The count value of the PDCP data packet of the upper layer of the PDCP layer protocol. RX_NEXT is NPDCP RX_NEXT, which is used to indicate the count value of the next PDCP packet received by the PDCP layer. RX_NEXT+window_size represents NPDCP RX_NEXT+NPDCP window_size, and NPDCP window_size represents the reordering window of the PDCP layer in the NR system.

When the PDCP layer receives a PDCP data packet, if the data packet is completely received, or if RCVD_COUNT<RX_DELIV, then discard the PDCP data packet. Among them, RCVD_COUNT represents the count value of the PDCP data packet currently received by the PDCP layer.

If the PDCP packet is not discarded, the PDCP layer can perform the following operations:

1) If RCVD_COUNT>=RX_NEXT, then update RX_NEXT to RCVD_COUNT+1;

2) If RCVD_COUNT=RX_DELIV, then submit all continuously received PDCP data packets related to RCVD_COUNT, and update RX_DELIV to the count value of the next PDCP data packet not continuously received;

3) If the reorder timer is running, RX_DELIV>=RX_REORD, then stop and reset the reorder timer; where RX_REORD represents the next count value that triggers the PDCP reorder timer.

4) If the reorder timer is not running and RX_DELIV<RX_NEXT, then update RX_REORD to RX_NEXT and start the reorder timer;

5) If the reorder timer expires, submit all PDCP data packets smaller than RX_REORD and continuously received PDCP data packets related to RX_REORD, and update RX_DELIV to the count value of the first undelivered PDCP data packet.

In the NR system, when high-quality signals are used for high-speed data transmission during the movement, if the receiving end uses a too long reordering timer, it is likely that the PDCP layer will wait for a long time meaninglessly, which will lead to data packets. Loss, increase the data processing delay; it may even cause the RLC receiving window to slide too fast, causing the PDCP receiving window to be misaligned with the RLC receiving window, causing the receiving end to fail to receive subsequent data packets, resulting in impaired data transmission efficiency.

In the NR system, when the signal quality deteriorates during the movement, if the receiving end uses a too short reordering timer, it may cause the PDCP layer to update the window quickly and submit the received data. If the PDCP receiving window slides too fast The holes in the RLC layer will not be able to perform ARQ retransmission in the future, and the PDCP receiving window has been skipped. Even if the RLC layer retransmits later, the PDCP layer at the receiving end will not receive any more, resulting in low data transmission efficiency.

Among them, the receiving end can be a terminal device or a network device.

It can be seen that reorganization and reordering are implemented through different layers. In the high-speed data transmission scenario, it will affect the stability and real-time performance of data transmission, and also affect the efficiency of data transmission.

In view of this, the embodiments of the present application provide a data reordering method and a communication device, which can dynamically and flexibly update the reordering timer, so as to improve the stability and real-time performance of data transmission, and improve the efficiency of data transmission.

The embodiments of the present application can not only be applied to a scenario where the reorganization is at the RLC layer and the reordering is at the PDCP layer in the NR system, but also can be applied to a system where the reorganization and reordering are at different layers.

The technology described in the embodiments of this application can be used in various communication systems, such as fourth-generation (4G) communication systems, 4.5G communication systems, 5G communication systems, systems that integrate multiple communication systems, or future-evolving communication systems . For example, LTE systems, NR systems, wireless-fidelity (WiFi) systems, time-sensitive networking (TSN) systems, integrated access and backhaul (IAB) systems, etc. The 3rd generation partnership project (3rd generation partnership project, 3GPP) organizes the development of related communication systems.

The terminal device (also referred to as a terminal) involved in the embodiments of this application can be a device with wireless transceiver function, which can be deployed on land, including indoor or outdoor, handheld or vehicle-mounted; or on the water (such as a ship Etc.); can also be deployed in the air (such as aircraft, balloons and satellites, etc.). The terminal device may be a user equipment (UE), where the UE includes a handheld device with a wireless communication function, a vehicle-mounted device, a wearable device, or a computing device. Exemplarily, the UE may be a mobile phone, a tablet computer, or a computer with a wireless transceiver function. Terminal equipment can also be virtual reality (VR) terminal equipment, augmented reality (augmented reality, AR) terminal equipment, smart vehicle terminal equipment, wireless terminal in industrial control, wireless terminal in unmanned driving , Wireless terminal in telemedicine, wireless terminal in smart grid, wireless terminal in smart city, wireless terminal in smart home, etc. In the embodiments of the present application, the device used to implement the function of the terminal device may be a terminal device; it may also be a device capable of supporting the terminal device to implement the function, such as a chip system. The device may be installed in the terminal device or connected to the terminal device. Matching use, such as a processor. In the technical solutions provided by the embodiments of the present application, the device for realizing the functions of the terminal device is a terminal device as an example to describe the technical solutions provided by the embodiments of the present application.

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

In this application, the terminal may be a terminal in the Internet of Things (IoT) system. IoT is an important part of the development of information technology in the future. Its main technical feature is to connect objects to the network through communication technology to realize Machine interconnection, an intelligent network of interconnection of things. The terminal in this application may be a terminal in machine type communication (MTC). The terminal of the present application may be an on-board module built into the vehicle as one or more components or units, and the vehicle can implement the method of the present application through the built-in on-board module. Therefore, the embodiments of the present application can be applied to the Internet of Vehicles, such as vehicle to everything (V2X), long term evolution vehicle (LTE-V), and vehicle to vehicle (V2V). Wait.

The network equipment involved in the embodiments of the present application may include a base station (BS), and may be a device that is deployed in a wireless access network and can communicate with a terminal device wirelessly. Among them, the base station may have many forms, such as macro base stations, micro base stations, relay stations, and access points. Exemplarily, the network equipment involved in the embodiments of the present application may be a base station in 5G or a base station in long term evolution (LTE), where the base station in 5G may also be referred to as a transmission reception point. , TRP) or next generation Node B (gNB). In the embodiments of the present application, the device used to implement the function of the network device may be a network device; it may also be a device that can support the network device to implement the function, such as a chip system. The device may be installed in the network device or combined with the network device. Matching use, such as a processor. In the embodiments of the present application, the chip system may be composed of chips, or may include chips and other discrete devices. In the technical solutions provided in the embodiments of the present application, the device used to implement the functions of the network equipment is a network device as an example to describe the technical solutions provided in the embodiments of the present application.

Please refer to FIG. 4, which is a schematic diagram of a network architecture to which an embodiment of the present application is applied. The network architecture shown in FIG. 4 includes a terminal device 401 and a network device 402. The form and quantity of the equipment shown in FIG. 4 are used as examples, and do not constitute a limitation to the embodiments of the present application.

According to different transmission directions, the transmission link from the terminal device 401 to the network device 402 is recorded as uplink (UL), and the transmission link from the network device 402 to the terminal device 401 is recorded as the downlink (DL). ). Similarly, data transmission in the uplink can be abbreviated as uplink data transmission or uplink transmission, and data transmission in the downlink can be abbreviated as downlink data transmission or downlink transmission.

The network device 402 can provide communication coverage for a specific geographic area through an integrated or external antenna device. One or more terminal devices 401 located within the communication coverage area of the network device 402 can all access the network device 402. One network device 402 can manage one or more cells. Each cell has an identification (identification), which is also called a cell identity (cell ID). From the perspective of radio resources, a cell is a combination of downlink radio resources and uplink radio resources (not necessary) paired with it.

Applied in the embodiment of this application, in a scenario where the network device 402 transmits downlink data to the terminal device 401, the terminal device 401 receives a configuration message (for example, an RRC reconfiguration message) from the network device 402, and obtains the configuration information of the network device according to the configuration message. The length of the reordering timer and the bit length information of the sequence number (SN) carried by the data; the length of the reordering timer is updated according to the bit length information of the SN and the signal quality of the terminal device 401; the terminal device 401 is updated according to the After the duration of the reordering timer, the PDCP data packets corresponding to the data bearer are reordered. Specifically, the terminal device 401 may reorder the PDCP data packets corresponding to the data bearer at the PDCP layer according to the updated duration of the reordering timer.

The terminal device 401 no longer uses the duration of the reordering timer configured by the network device 402, but re-determines the duration of the reordering timer according to the signal quality and the bit length information of the SN, so that the duration of the reordering timer can be adjusted adaptively , Which is conducive to enhancing the stability and real-time performance of downlink data transmission.

Applied in the embodiment of this application, in the scenario where the terminal device 401 transmits uplink data to the network device 402, the network device 402 updates the reordering timer according to the bit length information of the configured SN and the signal quality of the terminal device 401, where , The signal quality of the terminal device 401 can be reported by the terminal device 401 to the network device 402. The network device 402 reorders the PDCP data packets corresponding to the data bearer according to the updated duration of the reordering timer. Specifically, the network device 402 may reorder the PDCP data packets corresponding to the data bearer at the PDCP layer according to the updated duration of the reordering timer.

The network device 402 no longer fixes the duration of the configured reordering timer, but re-determines the duration of the reordering timer according to the signal quality and the bit length information of the SN, so that the duration of the reordering timer can be adjusted adaptively, which is beneficial to Enhance the stability and real-time performance of uplink data transmission.

The data reordering method provided by the embodiments of the present application will be described in detail below. Taking the network device and the terminal device 1 as an example for introduction, the terminal device 1 may be any terminal device within the coverage of the network device.

Please refer to FIG. 5, which is a schematic flowchart of a data reordering method provided by an embodiment of this application. The method may include but is not limited to the following steps:

501: The network device sends an RRC reconfiguration message to the terminal device 1. Correspondingly, the terminal device 1 receives the RRC reconfiguration message from the network device.

Before performing step 501, the network device may configure the initial duration of the reordering timer for the terminal device 1. The initial duration can also be understood as the configuration duration. Or, the initial duration of the reordering timer is preconfigured on the network device, and the preconfigured initial duration of the reordering timer is used as the initial duration of the reordering timer of the terminal device 1.

Before performing step 501, the network device may also configure the terminal device 1 with the bit length information of the serial number carried by the data. The data bearer is the established bearer between the terminal device and the network device, which can be a data radio bearer (DRB) or a PDCP bearer. The bit length information of the SN can be 18 bits (bit) or 12 bits. The bit length information of the sequence number carried by the data may also be pre-configured.

Optionally, the network device may send an RRC reconfiguration message, such as an RRC connection reconfiguration message, to the terminal device 1 when the terminal device 1 accesses the network device.

Optionally, the network device may send an RRC reconfiguration message to the terminal device 1 during the process of the terminal device 1 establishing a data bearer or DRB. In the case of establishing a data bearer or a data radio bearer, the terminal device 1 can start data transmission and perform data transmission with the network device.

Wherein, the RRC reconfiguration message carries the initial duration of the reordering timer configured by the network device for the terminal device 1 and the bit length information of the SN carried by the data. The data bearer may be a currently established data bearer or a data bearer requested by the terminal device 1 to be established.

The RRC reconfiguration message may include a data radio bearer mode addition list (DataRadioBearer-ToAddModList), the list includes multiple ToAddMods, and a ToAddMod includes a DRB identifier (identifier, ID), PDCP parameters and RLC parameters corresponding to the DRB ID, and so on. The PDCP parameter includes the bit length information of the SN and the duration of the reordering timer (t-reordering), and t-reordering can be understood as the initial duration of the reordering timer. The terminal device 1 can obtain the PDCP parameter corresponding to the ID of the data bearer from the ToAddMod List through the ID of the currently established data bearer or the ID of the data bearer requested to be established, and obtain the SN of the data bearer from the PDCP parameters. Bit length information and the initial duration of the reordering timer.

The RRC reconfiguration message can be understood as an RRC layer message. When the RRC layer of the terminal device 1 receives the RRC reconfiguration message, it can pass the RRC reconfiguration message to the layer 2 of the terminal device 1. Or the RRC layer of the terminal device 1 obtains the initial duration of the reordering timer and the bit length information of the SN carried by the data from the RRC reconfiguration message, and transmits the initial duration of the reordering timer and the bit length information of the SN carried by the data to Layer 2 of terminal device 1.

502. The terminal device 1 updates the duration of the reordering timer according to the bit length information of the serial number and the signal quality of the terminal device.

In the case of obtaining the initial duration of the reordering timer and the bit length information of the SN carried by the data, the terminal device 1 can update the duration of the reordering timer according to the bit length information of the SN and the signal quality of the terminal device.

The signal quality may include reference signal receiving power (RSRP), signal to interference plus noise ratio (SINR), reference signal receiving quality (RSRQ) or received signal strength indicator One or more of (received signal strength indication, RSSI). The quality of the signal can usually affect the performance of data transmission. For example, the higher the RSRP, the better the signal quality. The better the signal quality, the easier the data transmission will succeed. The greater the probability that the terminal device can receive PDCP packets in sequence, the reordering The smaller the workload, the shorter the duration of the reordering timer can be set at this time.

The physical layer of the terminal device 1 can obtain the signal quality of the terminal device 1 by measuring the reference signal, and the signal quality can also be described as a measurement result. The terminal device 1 may also obtain signal quality in other ways, and how to obtain the signal quality is not limited in the embodiment of the present application. The physical layer of the terminal device 1 transfers the signal quality of the terminal device 1 it obtains to the layer 2 of the terminal device 1, so that the layer 2 of the terminal device 1 updates the terminal device 1 based on the bit length information of the SN and the signal quality of the terminal device 1. The duration of the reordering timer on the side.

The terminal device 1 is in a static state, then the terminal device 1 can obtain the signal quality of the physical layer from the terminal device 1 once.

The terminal device 1 is in a mobile state, then the terminal device 1 can periodically obtain the signal quality of the physical layer from the terminal device 1, and the specific period is not limited in the embodiment of the present application. The terminal device 1 periodically obtains the signal quality, and if the durations corresponding to the signal quality determined twice are not the same, the durations of the reordering timers can be updated respectively. For example, if the SN bit length is 18bit, the signal quality acquired by the terminal device in the first cycle is -115db, and the reordering timer is updated to 260ms; the signal quality acquired in the second cycle is -90db, which will reorder The duration of the timer is updated to 140ms.

The terminal device 1 is in a static state or a moving state, and the reordering timer can be updated according to the signal quality of the terminal device 1 and the bit length information of the SN. Alternatively, the terminal device 1 can determine the duration corresponding to the signal quality of the terminal device 1 according to the signal quality of the terminal device 1 and the bit length information of the SN. When the number of PDCP data packets received in the PDCP receiving window exceeds the threshold, the terminal device is shortened The duration corresponding to the signal quality of 1, and the duration of the reordering timer is updated to the duration corresponding to the shortened signal quality of the terminal device 1.

In a possible implementation manner, the terminal device may update the duration of the reordering timer according to the mapping relationship between the signal quality and the duration corresponding to the bit length information of the SN. The mapping relationship is, for example, a mapping table, in which the time length corresponding to the signal quality of the terminal device 1 is searched, and the time length of the reordering timer is updated from the initial time length to the time length corresponding to the signal quality of the terminal device 1. The terminal equipment can be pre-configured or self-defined, the mapping table between signal quality and duration.

Exemplarily, when the bit length information of the SN is 18 bits, the mapping table between the RSRP value and the duration of the reordering timer may be as shown in Table 1 below. For example, if the initial duration of the reordering timer is 140ms, the bit length information of the SN is 18bit, and the RSRP value obtained by the terminal device is -80db, then it can be determined from Table 1 to update the duration of the reordering timer to 100ms.

RSRP value	The duration of the reordering timer
Greater than -85 decibels (db)	100ms
-86～-95db	140ms
-96～-110db	180ms

-111～-120db	260ms
Less than -120db	300ms

Table 1

Exemplarily, when the bit length information of the SN is 12 bits, the mapping table between the RSRP value and the duration of the reordering timer may be as shown in Table 2 below.

RSRP value	The duration of the reordering timer
Greater than -85 decibels (db)	100ms
-86～-95db	140ms
-96～-110db	180ms
-111～-120db	220ms
Less than -120db	260ms

Table 2

It can be seen from Table 1 and Table 2 that the larger the RSRP value, the shorter the duration of the reordering timer, which can improve the efficiency of data transmission. It should be noted that each value in the mapping table shown in Table 1 and Table 2 is an empirical value, used for example, and does not constitute a limitation to the embodiment of the present application.

In another possible implementation manner, the terminal device can determine the duration corresponding to the signal quality of the terminal device 1 according to the mapping relationship between the signal quality and the duration corresponding to the bit length information of the SN, and the signal received within the PDCP receiving window When the number of PDCP data packets exceeds the threshold, the duration corresponding to the signal quality of the terminal device 1 is shortened, and the duration of the reordering timer is updated to the duration corresponding to the shortened signal quality of the terminal device 1. Wherein, the mapping relationship may be, for example, a mapping table. Wherein the threshold related to the length of the bit SN, SN if the bit length of 18bit, then the threshold may be a two-thirds ^218; if the SN bits 12bit length, then the threshold of ²¹² may be two-thirds. The level of the duration corresponding to the signal quality of the shortened terminal device 1 in the mapping table is adjacent to the level of the duration corresponding to the signal quality of the terminal device 1. For example, the duration corresponding to the signal quality of the terminal device 1 is 220 ms, then the shortened The time length corresponding to the signal quality of the terminal device 1 is 180 ms. In Table 2, 220 ms is adjacent to 180 ms, or 180 ms is the previous level or the next level of 220 ms.

For example, if the initial duration of the reordering timer is 140ms, the bit length information of the SN is 18bit, and the RSRP value obtained by the terminal device is -115db, then it can be determined from Table 1 that the duration corresponding to the signal quality of the terminal device 1 is 260ms; at this time, the number of data packets PDCP receives the PDCP receiving more than two thirds of the window ^218, then the reordering timer length is updated to 220ms.

When the number of PDCP packets received in the PDCP receiving window exceeds the threshold, the duration corresponding to the signal quality of the terminal device 1 obtained by looking up the table may still be too long, so the reordering timer is updated to be longer than that of the terminal device 1. The time length corresponding to the signal quality and the adjacent time length in the table are used to further improve the stability and real-time performance of data transmission.

The number of PDCP data packets received in the PDCP receiving window does not exceed the threshold, then the duration of the reordering timer is updated to the duration corresponding to the signal quality of the terminal device 1.

503: The terminal device 1 reorders the PDCP data packets corresponding to the data bearer according to the updated duration of the reordering timer. That is, the terminal device uses another duration (different from the initial duration) of the reordering timer at the PDCP layer to reorder the PDCP data packets corresponding to the data bearer.

For example, if the initial duration of the reordering timer is 140ms, the bit length information of the SN is 18bit, and the RSRP value obtained by the terminal device 1 is -80db, then it can be determined from Table 1 that the duration of the reordering timer after the update is 100ms, then The terminal device 1 uses a 100ms reorder timer at the PDCP layer to reorder the PDCP data packets corresponding to the data bearer. The terminal device 1 uses a 100ms reordering timer for reordering. Compared with a 140ms reordering timer for reordering, it can reduce the probability that the PDCP receiving window and the RLC receiving window are staggered, thereby improving the stability and real-time performance of data transmission. , Improve the efficiency of data transmission.

For another example, the initial duration of the reordering timer is 100ms, the bit length information of the SN is 18bit, and the RSRP value obtained by the terminal device 1 is -130db, then it can be determined from Table 1 that the duration of the updated reordering timer is 130ms, Then, the terminal device 1 uses a 130ms reordering timer at the PDCP layer to reorder the PDCP data packets corresponding to the data bearer. The terminal device 1 uses a 130ms reordering timer for reordering. Compared with a 100ms reordering timer for reordering, it can avoid the PDCP receiving window from sliding too fast, thereby improving the stability and real-time performance of data transmission, and improving data transmission s efficiency.

Optionally, when the reordering timer is started with the initial duration and timed out, the terminal device 1 updates the duration of the reordering timer, and performs reordering with the updated duration of the reordering timer. For example, the duration of the reordering timer can be updated from the initial duration to the duration corresponding to the signal quality of the terminal device 1.

Optionally, for the terminal device 1 in the mobile state, when the terminal device 1 starts with a certain duration and times out, the terminal device 1 updates the duration of the reordering timer from the duration to another duration. For example, the bit length information of SN is 12bit, the terminal device updates the reordering timer to 140ms in the first cycle, and the reordering timer is reordered at 140ms. In the second cycle, it moves to a better signal. In the area, the terminal device can update the duration of the reordering timer to 100ms after the 140ms reordering timer expires, and the reordering timer is reordered at 100ms.

In the embodiment shown in FIG. 5, the terminal device 1 can update the duration of the reordering timer according to its signal quality, and reorder the duration of the updated reordering timer to realize the dynamic adjustment of the duration of the reordering timer. Therefore, the stability and real-time performance of data transmission can be improved, and the efficiency of data transmission can be improved.

Please refer to FIG. 6, which is a schematic flowchart of another data reordering method provided by an embodiment of this application. The method may include but is not limited to the following steps:

601. The network device updates the duration of the reordering timer according to the bit length information of the serial number and the signal quality of the terminal device 1.

The network device may perform step 501 in the embodiment shown in FIG. 5 before performing step 601.

Before performing step 601, the network device configures the initial duration of the reordering timer of the network device and the bit length information of the sequence number carried by the data between the network device and the terminal device 1.

The initial duration of the reordering timer on the network device side and the initial duration of the reordering timer on the terminal device 1 side may be the same or different.

For the specific implementation process of step 601, refer to the specific description of step 502 in the embodiment shown in FIG. 5. The network device obtains the signal quality of the terminal device 1, and can report it through the terminal device 1. The terminal device 1 can report once or periodically, depending on the stationary state or the moving state of the terminal device 1.

602. The network device reorders the PDCP data packets corresponding to the data bearer according to the updated duration of the reordering timer.

For the specific implementation process of step 602, refer to the specific description of step 503 in the embodiment shown in FIG. 5.

In the embodiment shown in FIG. 6, the network device can update the duration of the reordering timer according to the signal quality of the terminal device 1, and perform reordering according to the updated duration of the reordering timer, so that the duration of the reordering timer can be changed. Dynamic adjustment can improve the stability and real-time performance of data transmission, and can improve the efficiency of data transmission.

Corresponding to the methods given in the foregoing method embodiments, the embodiments of the present application also provide corresponding devices, including corresponding modules for executing the foregoing embodiments. The module can be software, hardware, or a combination of software and hardware.

Refer to FIG. 7, which is a schematic structural diagram of a communication device provided by an embodiment of this application. The communication device shown in FIG. 7 includes a processing module 701 and a transceiver module 702.

The communication device shown in FIG. 7 may be a terminal device or a network device.

In the case where the communication device shown in FIG. 7 is a terminal device, the processing module 701 is used to implement steps 502 and 503 in the embodiment shown in FIG. 5; the transceiver module 702 is used to implement steps in the embodiment shown in FIG. 5 501. The transceiver module 702 is also used to implement the signal quality of the terminal device 1 sent to the network device in the embodiment shown in FIG. 6.

In the case where the communication device shown in FIG. 7 is a network device, the processing module 701 is used to implement steps 601 and 602 in the embodiment shown in FIG. 6; the transceiver module 702 is used to implement step 501 in the embodiment shown in 5 . The transceiver module 702 is also used to realize the signal quality of the terminal device 1 received from the terminal device 1 in the embodiment shown in FIG. 6.

The terminal equipment and the network equipment can know the predefined configuration of the wireless communication system, including the radio access technology (RAT) supported by the system and the radio resource configuration specified by the system, such as the basic configuration of the radio frequency band and carrier. The carrier is a frequency range that complies with the system regulations. This section of frequency range can be determined by the center frequency of the carrier (denoted as carrier frequency) and the bandwidth of the carrier. The pre-defined configuration of these systems can be used as a part of the standard protocol of the wireless communication system, or determined by the interaction between the terminal device and the network device. The content of the relevant standard protocol may be pre-stored in the memory of the terminal device and the network device, or embodied in the hardware circuit or software code of the terminal device and the network device.

The terminal equipment and the network equipment can support the RAT of NR. Specifically, the terminal device and the network device use the same air interface parameters, coding scheme, modulation scheme, etc., and communicate with each other based on the wireless resources specified by the system.

Please refer to FIG. 8, which is a schematic structural diagram of another communication device provided in an embodiment of this application. The communication device may be the terminal device and the network device in the embodiment of the present application. As shown in Figure 8, the communication device may include multiple components, such as: application subsystem, memory (memory), mass storage (massive storage), baseband subsystem, radio frequency intergreted circuit (RFIC), Radio frequency front end (RFFE) devices, and antenna (antenna, ANT). These components can be coupled through various interconnection buses or other electrical connections.

In FIG. 8, ANT_1 represents the first antenna, ANT_N represents the Nth antenna, and N is a positive integer greater than 1. Tx represents the transmission path, Rx represents the reception path, and different numbers represent different paths. Each path can represent a signal processing channel. Among them, FBRx represents the feedback receiving path, PRx represents the main receiving path, and DRx represents the diversity receiving path. HB stands for high frequency and LB stands for low frequency, both of which refer to the relative height of the frequency. BB stands for baseband. It should be understood that the marks and components in FIG. 8 are for illustrative purposes only, and as a possible implementation manner, the embodiment of the present application also includes other implementation manners. For example, the communication device may include more or fewer paths, including more or fewer components.

Among them, the application subsystem can be used as the main control system or main computing system of the communication device, used to run the main operating system and application programs, manage the software and hardware resources of the entire communication device, and provide users with a user operation interface. In addition, the application subsystem may also include driver software related to other subsystems (e.g., baseband subsystem).

The application subsystem may include one or more processors. Multiple processors may be multiple processors of the same type, or may include a combination of multiple types of processors. In this application, the processor may be a general-purpose processor or a processor designed for a specific field. For example, the processor may be a center processing unit (CPU), a digital signal processor (digital signal processor, DSP), or a microcontroller (microcontrol unit, MCU). The processor can also be a graphics processing unit (GPU), image signal processing (ISP), audio signal processor (ASP), and artificial intelligence (AI) Application of specially designed AI processor. The AI processor includes, but is not limited to, a neural network processing unit (NPU), a tensor processing unit (TPU), and a processor called an AI engine. In the embodiment of the present application, the processor can implement step 502 and step 503 in the embodiment shown in FIG. 5, or implement step 601 and step 602 in the embodiment shown in FIG. 6.

In Figure 8, a radio frequency integrated circuit (including RFIC 1, and one or more optional RFIC 2) and radio frequency front-end devices can jointly form a radio frequency subsystem. According to different signal receiving or sending paths, the radio frequency subsystem can also be divided into radio frequency receiving path (RF receive path) and radio frequency transmitting path (RF transmit path). Among them, the radio frequency receiving channel can receive the radio frequency signal through the antenna, and process the radio frequency signal (such as amplifying, filtering and down-converting) to obtain the baseband signal, and pass it to the baseband subsystem. The radio frequency transmission channel can receive the baseband signal from the baseband subsystem, process the baseband signal (such as up-conversion, amplification and filtering) to obtain the radio frequency signal, and finally radiate the radio frequency signal into the space through the antenna. The radio frequency integrated circuit may be called a radio frequency processing chip or a radio frequency chip.

In the embodiment of this application, when the communication device is a terminal device, the radio frequency integrated circuit and the antenna are used to implement step 501 in the embodiment shown in FIG. 5, receive messages or information from the network device, and send messages to the network device Or information, etc. When the communication device is a network device, the radio frequency integrated circuit and the antenna are used to implement step 501 in the embodiment shown in FIG. 5, send messages or information, etc. to the terminal device, and receive messages or information from the terminal device.

Specifically, the radio frequency subsystem may include an antenna switch, an antenna tuner, a low noise amplifier (LNA), a power amplifier (PA), a mixer, and a local oscillator (LO). ), filters and other electronic devices, which can be integrated into one or more chips as required. The radio frequency integrated circuit may be called a radio frequency processing chip or a radio frequency chip. The RF front-end device can also be an independent chip. Radio frequency chips are sometimes called receivers, transmitters, or transceivers. With the evolution of technology, antennas can sometimes be considered as part of the radio frequency subsystem and can be integrated into the chip of the radio frequency subsystem. Antennas, RF front-end devices and RF chips can all be manufactured and sold separately. Of course, the radio frequency subsystem can also adopt different devices or different integration methods based on power consumption and performance requirements. For example, part of the components belonging to the radio frequency front end are integrated into the radio frequency chip, and even the antenna and the radio frequency front end device are integrated into the radio frequency chip. The radio frequency chip may also be referred to as a radio frequency antenna module or an antenna module.

Similar to the radio frequency subsystem which mainly completes radio frequency signal processing, as the name implies, the baseband subsystem mainly completes the processing of baseband signals. The baseband subsystem can extract useful information or data bits from the baseband signal, or convert the information or data bits into a baseband signal to be sent. These information or data bits can be data representing user data or control information such as voice, text, and video. For example, the baseband subsystem can implement signal processing operations such as modulation and demodulation, encoding and decoding.

In addition, since the radio frequency signal is usually an analog signal, the signal processed by the baseband subsystem is mainly a digital signal, and an analog-to-digital conversion device is also required in the wireless communication equipment. In the embodiment of the present application, the analog-to-digital conversion device may be arranged in the baseband subsystem or the radio frequency subsystem. The analog-to-digital conversion device includes an analog-to-digital converter (ADC) that converts an analog signal into a digital signal, and a digital-to-analog converter (DAC) that converts a digital signal into an analog signal.

Similar to the application subsystem, the baseband subsystem can also include one or more processors. In addition, the baseband subsystem may also include one or more hardware accelerators (HAC). The hardware accelerator can be used to specifically complete some sub-functions with relatively large processing overhead, such as the assembly and analysis of data packets, and the encryption and decryption of data packets. These sub-functions can also be implemented using general-purpose processors, but due to performance or cost considerations, hardware accelerators may be more appropriate. In a specific implementation, the hardware accelerator is mainly implemented with an application-specified intergated circuit (ASIC). Of course, the hardware accelerator may also include one or more relatively simple processors, such as MCUs.

In the embodiments of the present application, the baseband subsystem and the radio frequency subsystem together form a communication subsystem, which provides wireless communication functions for the communication device. Generally, the baseband subsystem is responsible for managing the software and hardware resources of the communication subsystem, and can configure the working parameters of the radio frequency subsystem. The processor of the baseband subsystem can run the sub-operating system of the communication subsystem. The sub-operating system is often an embedded operating system or a real-time operating system, such as the VxWorks operating system or the QuRT system of Qualcomm.

The baseband subsystem can be integrated into one or more chips, which can be called a baseband processing chip or a baseband chip. The baseband subsystem can be used as an independent chip, which can be called a modem (modem) or a modem chip. The baseband subsystem can be manufactured and sold in units of modem chips. The modem chip is sometimes called a baseband processor or mobile processor. In addition, the baseband subsystem can also be further integrated into a larger chip, which can be manufactured and sold in units of larger chips. This larger chip may be called a system chip, a system on a chip or a system on a chip (system on a chip, SoC), or a SoC chip for short. The software components of the baseband subsystem can be built into the hardware components of the chip before the chip leaves the factory, or imported into the hardware components of the chip from other non-volatile memory after the chip leaves the factory, or can be downloaded online through the network And update these software components.

In addition, the communication device also includes memory, such as the memory and large-capacity memory in FIG. 8. In addition, the application subsystem and the baseband subsystem may also include one or more buffers respectively. In specific implementation, memory can be divided into volatile memory (volatile memory) and non-volatile memory (non-volatile memory, NVM). Volatile memory refers to the memory in which the data stored inside will be lost when the power supply is interrupted. At present, volatile memory is mainly random access memory (RAM), including static random access memory (static RAM, SRAM) and dynamic random access memory (dynamic RAM, DRAM). Non-volatile memory refers to the memory in which the data stored in the internal storage will not be lost even if the power supply is interrupted. Common non-volatile memories include read only memory (ROM), optical discs, magnetic disks, and various memories based on flash memory technology. Generally speaking, volatile memory can be used for memory and cache, and non-volatile memory, such as flash memory, can be used for mass storage.

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

Those of ordinary skill in the art can understand that, for the convenience and conciseness of the description, the specific working processes of the systems, devices, and units described above can refer to the corresponding processes in the foregoing method embodiments, and will not be repeated here.

It can be understood that the systems, devices, and methods described in this application can also be implemented in other ways. For example, the device embodiments described above are merely illustrative, for example, the division of the units is only a logical function division, and there may be other divisions in actual implementation, for example, multiple units or components can be combined or It can be integrated into another system, or some features can be ignored or not implemented. In addition, the displayed or discussed mutual coupling or direct coupling or communication connection may be indirect coupling or communication connection through some interfaces, devices or units, and may be in electrical, mechanical or other forms.

Claims (26)

1. A data reordering method is characterized in that it includes:

   The terminal device receives a radio resource control RRC reconfiguration message from the network device, where the RRC reconfiguration message carries the initial duration of the reordering timer and the bit length information of the sequence number carried by the data;

   The terminal device updates the duration of the reordering timer according to the bit length information of the serial number and the signal quality of the terminal device;

   The terminal device reorders the PDCP data packets corresponding to the data bearer according to the updated duration of the reordering timer.
2. The method according to claim 1, wherein the terminal device updating the duration of the reordering timer according to the bit length information of the serial number and the signal quality of the terminal device comprises:

   According to the mapping relationship between the signal quality and the duration corresponding to the bit length information of the sequence number, the terminal device updates the duration of the reordering timer from the initial duration to that corresponding to the signal quality of the terminal device duration.
3. The method according to claim 1, wherein the terminal device updating the duration of the reordering timer according to the bit length information of the serial number and the signal quality of the terminal device comprises:

   The terminal device determines the duration corresponding to the signal quality of the terminal device according to the mapping relationship between the signal quality and the duration corresponding to the bit length information of the serial number;

   When the number of PDCP data packets received in the PDCP receiving window exceeds the threshold, the duration corresponding to the signal quality of the terminal device is shortened, and the duration of the reordering timer is updated from the initial duration to the shortened duration. The duration corresponding to the signal quality of the terminal device.
4. The method according to claim 3, wherein the shortened duration corresponding to the signal quality of the terminal device is at the level in the mapping relationship, and the duration corresponding to the signal quality of the terminal device is in the mapping relationship. The levels in the relationship are adjacent.
5. The method according to claim 3, wherein the threshold value is related to the bit length information of the serial number, and the bit length information of the serial number is 12 bits or 18 bits.
6. The method according to any one of claims 1-4, wherein the method further comprises:

   The terminal device obtains the signal quality of the terminal device from the physical layer of the terminal device.
7. The method according to claim 6, wherein the terminal device acquiring the signal quality of the terminal device from the physical layer of the terminal device comprises:

   When the terminal device is in a static state, the terminal device acquires the signal quality of the terminal device from the physical layer of the terminal device once.
8. The method according to claim 6, wherein the terminal device acquiring the signal quality of the terminal device from the physical layer of the terminal device comprises:

   When the terminal device is in a mobile state, the terminal device periodically obtains the signal quality of the terminal device from the physical layer of the terminal device.
9. The method according to any one of claims 1-8, wherein the terminal device updating the duration of the reordering timer comprises:

   When the reordering timer is started with the initial duration and times out, the terminal device updates the duration of the reordering timer.
10. The method according to any one of claims 1-9, wherein the signal quality includes one or more of the following: reference signal received power (RSRP), signal-to-noise ratio (SINR), reference signal received quality (RSRQ), or received signal strength Indicates RSSI.
11. A communication device, characterized in that it comprises a processing module and a transceiver module;

    The transceiver module is configured to receive an RRC reconfiguration message from a network device, where the RRC reconfiguration message carries the bit length information of the initial duration from the sorting timer and the sequence number carried by the data;

    The processing module is configured to update the duration of the reordering timer according to the bit length information of the sequence number and the signal quality of the terminal device; The PDCP data packets corresponding to the data bearer are reordered.
12. The device according to claim 11, wherein:

    The processing module is specifically configured to update the duration of the reordering timer from the initial duration to that of the terminal device according to the mapping relationship between signal quality and duration corresponding to the bit length information of the sequence number. The duration corresponding to the signal quality.
13. The device according to claim 11, wherein:

    The processing module is specifically configured to determine the duration corresponding to the signal quality of the terminal device according to the mapping relationship between the signal quality and the duration corresponding to the bit length information of the serial number; the PDCP received within the PDCP receiving window When the number of data packets exceeds the threshold, the duration corresponding to the signal quality of the terminal device is shortened, and the duration of the reordering timer is updated from the initial duration to the duration corresponding to the shortened signal quality of the terminal device.
14. The apparatus according to claim 13, wherein the shortened duration corresponding to the signal quality of the terminal device is at the level in the mapping relationship, and the duration corresponding to the signal quality of the terminal device is in the mapping relationship. The levels in the relationship are adjacent.
15. The device according to claim 3, wherein the threshold value is related to bit length information of the serial number, and the bit length information of the serial number is 12 bits or 18 bits.
16. The device according to any one of claims 11-14, characterized in that:

    The transceiver module is also used to obtain the signal quality of the terminal device from the physical layer of the terminal device.
17. The device of claim 16, wherein:

    The transceiver module is specifically configured to obtain the signal quality of the terminal device from the physical layer of the terminal device once when the terminal device is in a static state.
18. The device of claim 16, wherein:

    The transceiver module is specifically configured to periodically obtain the signal quality of the terminal device from the physical layer of the terminal device when the terminal device is in a moving state.
19. The device according to any one of claims 11-18, wherein:

    The processing module is specifically configured to update the time length of the reordering timer when the reordering timer is started with the initial time length and times out.
20. The apparatus according to any one of claims 11-19, wherein the signal quality comprises one or more of the following: reference signal received power (RSRP), signal-to-noise ratio (SINR), reference signal received quality (RSRQ), or received signal strength Indicates RSSI.
21. A data reordering system, characterized in that the system includes terminal equipment and network equipment;

    The network device is configured to send an RRC reconfiguration message to the terminal device, where the RRC reconfiguration message carries the initial duration of the reordering timer and the bit length information of the sequence number carried by the data;

    The terminal device is configured to receive the RRC reconfiguration message; update the duration of the reordering timer according to the bit length information of the sequence number and the signal quality of the terminal device; according to the updated reconfiguration The duration of the sorting timer is to reorder the PDCP data packets corresponding to the data bearer.
22. The system of claim 21, wherein:

    The network device is further configured to update the duration of the reordering timer according to the bit length information of the serial number and the signal quality of the terminal device; and to update the duration of the reordering timer according to the updated duration of the reordering timer The PDCP data packets corresponding to the data bearer are reordered.
23. A communication device, characterized in that the device is used to execute the method according to any one of claims 1 to 10.
24. A communication device, comprising: a processor, the processor is coupled with a memory, the memory is used to store instructions, and when the instructions are executed by the processor, the device executes as in claims 1 to 10 Any one of the methods.
25. A computer-readable storage medium having a computer program stored thereon, wherein when the computer program is executed, the computer executes the method according to any one of claims 1 to 10.
26. A chip, characterized in that it comprises a processor, the processor is coupled with a memory, and the memory is used to store a program. When the program is executed by the processor, a device containing the chip is executed as the right The method of any one of 1 to 10 is required.

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