WO2021233400A1

WO2021233400A1 - Data transmission method, terminal device and network device

Info

Publication number: WO2021233400A1
Application number: PCT/CN2021/095006
Authority: WO
Inventors: 张艳霞; 杨晓东
Original assignee: 维沃移动通信有限公司
Priority date: 2020-05-22
Filing date: 2021-05-21
Publication date: 2021-11-25
Also published as: CN113709804A

Abstract

Disclosed are a data transmission method, a terminal device and a network device. The data transmission method comprises: when a preset condition is met, sending first information to a network device, wherein the first information is used for indicating that the sending of at least one data packet of a terminal device expires.

Description

Data transmission method, terminal equipment and network equipment

Cross-references to related applications

This application claims the priority of Chinese Patent Application No. 202010444359.3 filed in China on May 22, 2020, the entire content of which is incorporated herein by reference.

Technical field

This application relates to the field of communications, and in particular to a data transmission method, terminal equipment and network equipment.

Background technique

In a wireless communication system, communication service availability refers to the communication availability between communication service interfaces, which can be understood as the communication availability between the communication interface of the sending end and the communication interface of the receiving end, indicating whether the communication system is working in an available state.

Specifically, when the transmitted data packet can meet the availability criterion, the communication system can be considered to be in an available state. Conversely, if the data received by the receiving end is damaged or not received on time, it can be considered that the communication system is in an unavailable state, that is, when the receiving end does not receive the data correctly within a certain period of time (such as exceeding the survival time) Data packets sent to the sender will cause the application on the receiving end to enter an unusable state. Moreover, communication service availability is a very important service performance requirement parameter for many automation function applications in industrial scenarios, that is, many automation function applications in industrial environments have high communication service availability requirements, especially for deterministic business flows. For applications, such as mobile control, the demand for communication service availability can reach 99.999999%.

Therefore, in the process of realizing this application, the inventor found that there are at least the following problems in the prior art: how to accurately determine that the relevant communication service is about to enter an unavailable state, so as to ensure that the data can reach the receiving end within a specific time and ensure that the data is timely Transmission, thereby improving the availability of communication services.

Summary of the invention

The purpose of the embodiments of the present application is to provide a data transmission method, terminal equipment, and network equipment to be able to solve the problem of low availability of system communication services.

In the first aspect, an embodiment of the present application provides a data transmission method, which is applied to a terminal device, and the method includes:

When a preset condition is met, first information is sent to the network device, where the first information is used to indicate that the terminal device has at least one data packet sending timeout.

In a second aspect, an embodiment of the present application provides a terminal device, and the terminal device includes:

The sending module is configured to send first information to the network device when a preset condition is met, where the first information is used to indicate that the terminal device has at least one data packet sending timeout.

In a third aspect, an embodiment of the present application provides a terminal device, including: a memory, a processor, and a program or instruction that is stored on the memory and can run on the processor, and the program or instruction is processed by the processor. The steps of the method described in the first aspect are implemented when the device is executed.

In a fourth aspect, an embodiment of the present application provides a readable storage medium storing a program or instruction on the readable storage medium, and when the program or instruction is executed by a processor, the steps of the method described in the first aspect are implemented.

In a fifth aspect, an embodiment of the present application provides a data transmission method, which is applied to a network device, and the method includes:

Receiving first information sent by a terminal device when a preset condition is met, where the first information is used to indicate that the terminal device has at least one data packet sending timeout.

In a sixth aspect, an embodiment of the present application provides a network device, and the network device includes:

The receiving module is configured to receive first information sent by a terminal device when a preset condition is met, and the first information is used to indicate that the terminal device has sent at least one data packet overtime.

In a seventh aspect, an embodiment of the present application provides a network device, including: a memory, a processor, and a program or instruction that is stored on the memory and can run on the processor, and the program or instruction is processed by the processor. The steps of the method described in the fifth aspect are implemented when the device is executed.

In an eighth aspect, an embodiment of the present application provides a readable storage medium with a program or instruction stored on the readable storage medium, and when the program or instruction is executed by a processor, the steps of the method described in the fifth aspect are implemented .

In the embodiment of the present application, when the sending end, namely the terminal device, has at least one data packet sending timeout (for example, when it is not sent at all or is not correctly received by the receiving end, that is, the network device), it will cause the application on the receiving end to enter an unavailable state. Then, in order to enable the network device to know whether the relevant communication service has entered or is about to enter the unavailable state in a timely manner, the first information can be sent to the network device under certain conditions, that is, the preset condition, so that the network device can timely It is learned that the terminal device has at least one data packet sending timeout situation. In this way, through this embodiment, the network device can control the transmission of data in a timely manner, and provide effective scheduling to ensure that the data reaches the receiving end within the survival time, that is, to ensure timely data transmission, thereby improving the availability of communication services.

Description of the drawings

The drawings described here are used to provide a further understanding of the application and constitute a part of the application. The exemplary embodiments and descriptions of the application are used to explain the application, and do not constitute an improper limitation of the application. In the attached picture:

FIG. 1 is a schematic flowchart of a data transmission method in an embodiment of the present application;

FIG. 2 is a schematic flowchart of a second data transmission method in an embodiment of the present application;

FIG. 3 is a schematic structural diagram of a terminal device in an embodiment of the present application;

FIG. 4 is a schematic structural diagram of a network device in an embodiment of the present application;

FIG. 5 is a schematic structural diagram of a second type of terminal device in an embodiment of the present application;

Fig. 6 is a schematic structural diagram of a second type of network device in an embodiment of the present application.

Detailed ways

The technical solutions in the embodiments of the present application will be described clearly and completely in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all of them. Based on the embodiments in this application, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of this application.

The terms "first" and "second" in the specification and claims of this application are used to distinguish similar objects, but not to describe a specific sequence or sequence. It should be understood that the data used in this way can be interchanged under appropriate circumstances, so that the embodiments of the present application can be implemented in a sequence other than those illustrated or described herein. In addition, "and/or" in the specification and claims means at least one of the connected objects, and the character "/" generally means that the associated objects before and after are in an "or" relationship.

The technical solution of this application can be applied to various communication systems, such as: Global System of Mobile Communications (GSM), Code Division Multiple Access (CDMA) systems, and Wideband Code Division Multiple Access (GSM) systems. Wideband Code Division Multiple Access (WCDMA), General Packet Radio Service (GPRS), Long Term Evolution/Enhanced Long Term Evolution (Long Term Evolution Advanced, LTE-A), NR, etc.

User-side UE can also be called terminal equipment (Mobile Terminal), mobile user equipment, etc., and can communicate with one or more core networks via a radio access network (RAN), and user equipment can be terminal equipment. Such as mobile phones (or "cellular" phones) and computers with terminal equipment. For example, they can be portable, pocket-sized, handheld, computer-built or vehicle-mounted mobile devices, which exchange languages and/or wireless access networks. Or data.

Network equipment, also called a base station, can be a base station (Base Transceiver Station, BTS) in GSM or CDMA, a base station (NodeB) in WCDMA, or an evolved base station (evolutional Node B) in LTE , ENB or e-NodeB) and 5G base station (gNB).

In the embodiment of the present application, survival time is the time for an application that is communicating to continue to maintain an available state when it does not receive a desired message. The maximum time to live may refer to the length of time during which the communication service may not be able to meet the requirements of the application before the communication application is considered to be in an unavailable state. It can be understood that the survival time refers to the available time to recover from a failure.

Specifically, if the receiving end can receive the expected data in time and correctly, the communication service of the receiving end is considered to be in the up state (power-on state). When the receiving end application enters the up state, the receiving end application can maintain the up state for a long time. It is called up time interval or up time. If the receiving end cannot correctly receive the expected data or does not receive the expected data, it is considered that the communication service of the receiving end enters the down state (stop state). When the communication service of the receiving end accesses the down state, the communication application of the receiving end will start a timer. During the running of the timer, the application of the receiving end is still available, and the duration of the timer is the survival time. When the timer times out, the application on the receiving end turns to the down state, and at this time, it can be considered that the application on the receiving end is in an unavailable state.

Further, the application at the receiving end usually takes some measures to deal with the unavailability of such communication services. For example, to initiate an emergency shutdown.

When the communication service enters the up state again, the application on the receiving end will switch the communication service state to the up state. The transition of the communication service from the down state to the up state may require a long recovery time, resulting in a poor experience of the corresponding communication service. Therefore, high communication availability requirements are usually required in some industrial scenarios.

In addition, the aforementioned communication service availability may be related to the down time experienced by a certain application. For example, the total running time of an application is T, and the duration of the i-th down state is Δti. The communication service unavailability parameter of the application can be calculated by the following formula:

Then the communication service availability parameter of this application is A=1-U. From the above formula, it can be known that in order to obtain higher availability of communication services, it is necessary to reduce the length or number of times the communication service enters the communication unavailable state.

The technical solutions provided by the embodiments of the present application will be described in detail below with reference to the accompanying drawings.

As shown in FIG. 1, an embodiment of the present application provides a method for transmitting uplink control information, which is executed by a terminal device, and the method includes the following process steps:

Step 101: When a preset condition is met, send first information to a network device, where the first information is used to indicate that the terminal device has at least one data packet sending timeout.

In the embodiment of this application, when the sending end, ie the terminal device, has at least one data packet sending timeout (for example, when it is not sent at all or is not correctly received by the receiving end, ie, the network device), it will cause the application on the receiving end to enter an unavailable state, then , In order to enable the network device to know in time whether the relevant communication service has entered or is about to enter the unavailable state, the first information can be sent to the network device under certain conditions, that is, the preset condition, so that the network device can timely It is learned that the terminal device has at least one data packet sending timeout situation. In this way, through this embodiment, the network device can control the transmission of data in a timely manner, and provide effective scheduling to ensure that the data reaches the receiving end within the survival time, that is, to ensure timely data transmission, thereby improving the availability of communication services.

Optionally, in the data transmission method of the embodiment of the present application, the manner of sending the first information to the network device in step 101 includes but is not limited to one of the following:

(1) By sending a scheduling request (Scheduling Request, SR).

In an example, the first information may be implicitly indicated by sending the SR resource of the scheduling request. For example, the SR resource for sending the scheduling request corresponds to the logical channel, and the sending end detects that the sending of one or more first data packets has timed out, and can send through the SR resource corresponding to the logical channel of the one or more first data packets. Scheduling request. Further, the network side can determine which logical channel or logical channels correspond to the data packet whose transmission timeout is carried by the SR resource. In another example, the first information may also be carried in the SR and explicitly sent to the network device.

Further optionally, the above-mentioned related behavior of sending SR may include but is not limited to at least one of the following:

a) Trigger the SR. In an example, the SR may be triggered when the timer corresponding to the data packet expires.

b) Send the SR through a dedicated SR resource, where the dedicated SR resource is used to apply for uplink authorization for a specific type of data packet.

Further optionally, the specific type of data includes but is not limited to at least one of the following: a data packet corresponding to a timer that has expired; a data packet corresponding to a timer that is about to expire.

Further optionally, the network side may configure multiple dedicated SR resources, and the multiple dedicated SR resources correspond to different amounts of data and/or different remaining time, and the amount of data and remaining time may be absolute values, or It can be a value that characterizes a range. In an example, two SR resources are configured on the network side, and SR resource 1 is used for data whose total amount of data of a specific type of data packet (such as the data packet whose timer expires) is at level A (such as <100 bytes) The packet applies for uplink authorization, and the SR resource 2 is used to apply for uplink authorization for the data packet whose total amount of data of a specific type of data packet is at level B (for example, >=100 bytes). Or, in another example, two SR resources are configured on the network side. SR resource 1 is used to apply for uplink authorization for a specific type of data packet (such as a data packet whose remaining time is at level A (such as <0.5ms)). Resource 2 is used for (for example, the remaining time of the data packet is at the B level (such as >=0.5ms) data packet to apply for uplink authorization. Optionally, if the data packet timeout triggers a scheduling request, the SR resource can be used at this time 1 Transmission scheduling request.

c) Send the SR to the network device.

Further optionally, the aforementioned SR carries at least one of data volume information and remaining time information.

Optionally, the data volume information is used to indicate the total data volume of a specific type of data packet. The remaining time information is used to indicate that the timer distance corresponding to a specific type of data packet reaches the remaining time length of the preset timing duration. Wherein, the specific type of data includes but is not limited to at least one of the following: a data packet corresponding to a timer that has timed out; a data packet corresponding to a timer that is about to expire.

In an example, for a scheduling request that is not triggered by the timer timeout, the amount of data and/or the remaining time may also be carried. The amount of data and the remaining time may be an absolute value or a value used to characterize the range. If the data volume is less than 100 bytes, it is defined as range 1, greater than or equal to 100 bytes and less than 200 bytes is defined as range 2, and greater than 200 bytes is defined as range 3. The data volume field in the SR can carry the characterization The value of the range. Optionally, the scheduling request may carry multiple pairs of data volume fields and remaining time fields. For example, the data volume of level A with the remaining time is range 1, and the data volume of level B with the remaining time is range 2.

(2) The buffer status report (Buffer Status Report, BSR) is triggered by sending. In an example, the first information may be sent to the network device by carrying the first information in the BSR.

Further optionally, the above-mentioned related behavior of sending BSR may include but not limited to at least one of the following:

a) Trigger the BSR. In an example, the BSR may be triggered when the timer corresponding to the data packet expires.

b) Send the BSR to the network device.

Further optionally, the above-mentioned BSR carries at least one of data volume information and remaining time information.

Wherein, the data amount information is used to indicate the total data amount of a specific type of data packet. The remaining time information is used to indicate that the timer distance corresponding to a specific type of data packet reaches the remaining time length of the preset timing duration. Wherein, the specific type of data includes but is not limited to at least one of the following: a data packet corresponding to a timer that has timed out; a data packet corresponding to a timer that is about to expire.

Optionally, at least one of the above-mentioned data amount information and remaining time information may be indicated by per logical channel, or may be indicated by per logical channel group.

In an example, for the cache status report that is not triggered by the timer expiration, the amount of data and/or the remaining time may also be carried. The amount of data and the remaining time may be an absolute value, or may be used to characterize the range. value. For example, the buffer status report can carry logical channel (or group) 1 with the remaining time of level A data as range 1, and logical channel (or group) 2 with remaining time of B level data as range 2. Optionally, the buffer status report may carry multiple pairs of data volume domains and remaining time domains. For example, logical channel (or group) 1 remaining time is level A data volume is range 1, logical channel (or group) 2 remaining time The amount of data for level B is range 2.

(3) Initiate a random access process through dedicated Physical Random Access Channel (PRACH) resources.

In an example, the first information may be implicitly indicated by the PRACH resource that initiates the random access procedure. For example, the network side configures a dedicated physical random access channel PRACH resource, and when the sending end detects that one or more data packets are sent overtime, the random access process can be initiated through the PRACH resource. Further, the network side can learn from the random access resource that there is a data packet sending timeout at the sending end. In another example, a random access procedure may be initiated through the dedicated physical random access channel PRACH resource, and the above-mentioned first information may be explicitly sent to the network device.

(4) Through the user plane signaling of the Packet Data Convergence Protocol (PDCP) layer or the Radio Link Control (RLC) layer. In other words, the first information may be sent to the network device by carrying the first information in the user plane signaling of the PDCP layer or the RLC layer. In one example, header-only data packets are sent. For example, the timer 1 corresponding to PDCP SN=1 expires, the PDCP layer sends a null data packet, and the null data packet has no load part, and the subheader of the null data packet carries the PDCP SN to indicate the PDCP SN The timer 1 of the corresponding data packet has timed out.

(5) Control plane signaling through PDCP layer or RLC layer. In other words, the first information may be sent to the network device by carrying the first information in the control plane signaling of the PDCP layer or the RLC layer. In one example, a control packet is sent. For example, the timer 1 corresponding to PDCP SN=1 expires, and the PDCP layer sends a control packet, and the control packet carries the PDCP SN to indicate that the timer 1 of the data packet corresponding to the PDCP SN expires. Optionally, the control packet may carry multiple PDCPs and SNs to indicate that the timer 1 with multiple data packets has expired. Or, for example, the timer 1 corresponding to RLC SN=1 expires, and the RLC layer sends a control packet, and the control packet carries the RLC SN to indicate that the timer 1 of the data packet corresponding to the RLC SN expires. Optionally, the control packet may carry multiple RLCs and SNs to indicate that the timer 1 with multiple data packets has expired.

(6) Through media access control (Medium Access Control, MAC) layer signaling. In other words, the first information can be sent to the network device by carrying the first information in the MAC layer signaling. Optionally, the MAC layer signaling may trigger SR. In an example, if the sending end detects that multiple consecutive first data packets have timed out and needs to send MAC signaling to the network side, but there is no resource (such as PUSCH resource) for sending the MAC signaling, the sending end device can trigger SR. In an example, the MAC signaling may be a MAC control element (Medium Access Control Control Element, MAC CE); wherein, the MAC CE may carry a logical channel identifier, which is used to indicate that there is a logical channel corresponding to the logical channel identifier. Or multiple packets whose timers have expired. The MAC signaling may also carry additional information, such as the amount of data and/or the remaining time, for example, the total amount of data of the data packet whose timer has expired in the logical channel 1. Or, for example, the total data volume of the data packet with the remaining time of 0 in the logical channel 1 is 100 bytes, and the total data volume of the data packet with the remaining time of 0.5 ms in the logical channel 2 is 200 bytes.

Optionally, in the data transmission method of the embodiment of the present application, the foregoing preset conditions may include, but are not limited to, the following specific embodiments:

Specific embodiment one

In this specific embodiment 1, the foregoing preset condition is that the first timer corresponding to the N data packets expires.

Optionally, the value of N is agreed upon by a protocol or configured by the network device, wherein the value of N is an integer value greater than or equal to 1.

Further optionally, the foregoing N data packets may be consecutive N data packets.

Wherein, the consecutive N data packets may be N consecutively numbered data packets; it may also be N consecutively-numbered data packets (for example, the time to reach a certain protocol layer); and it may also be N consecutively numbered data packets. And the data packets with continuous arrival time.

Regarding the aforementioned numbering, in an example, when the PDCP layer of the transmitting end device maintains the aforementioned first timer, the numbering may be a PDCP count value (that is, COUNT) or a PDCP sequence number (Sequence Number, SN) and so on. In another example, when the RLC layer of the sending end device maintains the above-mentioned first timer, the number may be an RLC sequence number (Sequence Number, SN) or the like.

It can be understood that, in this embodiment, the terminal device maintains the first timer corresponding to at least one data packet, so as to provide timely feedback to the network device when the timing duration of the first timer is reached or exceeded, that is, the preset condition is met. It has the case that the data packet is sent overtime, so that the network side can timely and accurately learn that the relevant communication service has entered or is about to enter an unavailable state, so as to adjust the data transmission strategy.

Wherein, the above-mentioned first timer may be maintained by the PDCP layer or the radio link control RLC layer of the terminal device.

Optionally, the timing duration of the foregoing first timer may be configured by a network device or agreed upon by a protocol. Further, the timing duration of the first timer may be greater than or equal to the maximum delay duration of the data packet, and less than or equal to the difference between the survival time and the maximum delay duration of the data packet. Wherein, the survival time is the survival time of the Uu port obtained by mapping the survival time of the application layer of the terminal device; the survival time of the Uu port may be provided by the core network to the wireless access network.

Optionally, the configuration granularity of the first timer is based on data radio bearer (Data Radio Bearer, DRB) or quality of service flow (Quality of Service-flow, Qos-flow). In one example, one first timer is shared every (per) DRB or every (per) Qos-flow.

Further optionally, in this specific embodiment 1, the starting condition of the above-mentioned first timer may include, but is not limited to, one of the following:

(1) After the data packet corresponding to the first timer arrives. That is to say, whenever a data packet arrives, the first timer corresponding to the data packet is started to further determine whether to feed back corresponding first information to the network device according to the result of whether the started first timer expires.

(2) The data packet corresponding to the first timer arrives and reaches the first preset duration. That is to say, whenever a data packet arrives and the duration of the arrival of the data packet reaches a certain length of time, that is, the first preset length of time, the first timer corresponding to the data packet is started, so as to further start according to the started first timer. The result of whether the timer expires determines whether to feed back corresponding first information to the network device.

The arrival of the data packet can be understood as: the data packet arrives from the upper layer to the protocol layer maintaining the first timer, and it can also be understood as the protocol layer maintaining the first timer receives the data packet from the upper layer.

In an example, when a data packet is received from the upper layer or a predefined time (the preset duration may be 0) before the data packet is received from the upper layer, the timer 1 (that is, the first timer) is started. For example, the PDCP layer of the UE maintains a timer, and when the PDCP layer receives a data packet from the upper layer (such as the Service Data Adaptation Protocol (SDAP) layer or the application layer), the timer 1 is started. Or, for example, the PDCP layer of the UE maintains timer 1. When the PDCP layer receives a data packet from the upper layer (such as the SDAP layer), it starts timer 1 corresponding to the data packet (if the data packet belongs to QoS flow 1, start Timer 1 corresponding to QoS flow 1).

Further optionally, in this specific embodiment 1, the stop condition of the above-mentioned first timer includes but is not limited to one of the following:

The data packet corresponding to the first timer is successfully sent. That is to say, whenever a data packet arrives, the first timer corresponding to the data packet is started. If it is determined that the data packet is successfully sent before the timing duration of the first timer is reached or exceeded, the data packet can be stopped. The operation of the first timer.

In an example, the successful transmission of the data packet may be that the protocol entity (such as the PDCP entity) maintaining the first timer submits the corresponding data packet to the bottom layer (such as the RLC entity). It may also be that the data packet corresponding to the first timer is sent from the sending end device (for example, sent from the air interface).

A successful transmission indication of the data packet corresponding to the first timer is received. That is to say, whenever a data packet arrives, the first timer corresponding to the data packet is started, and if the successful transmission indication of the data packet is received before the timing duration of the first timer is reached or exceeded, then The operation of the first timer can be stopped.

Optionally, the successful transmission indication of the data packet corresponding to the first timer includes but is not limited to one of the following:

a) The opposite entity indicates that the data packet corresponding to the first timer is successfully received. Wherein, the opposite-end entity may refer to the entity at the receiving end of the data packet.

Wherein, the opposite entity indicates that the above-mentioned data packet is successfully received, which may be indicated through a status report. For example, the first timer is maintained at the PDCP layer, and the opposite PDCP entity is indicated by the PDCP status report; or the first timer is maintained at the RLC layer, and the opposite RLC entity is indicated by the RLC status report.

b) The underlying entity indicates that the data packet corresponding to the first timer is successfully received. Wherein, the underlying entity may refer to the underlying entity of the sender of the data packet.

Wherein, the bottom-layer entity indicates that the above-mentioned data packet is successfully received, which may be indicated by the bottom-layer HARQ feedback and/or the bottom-layer RLC feedback.

In one example, the PDCP layer of the UE maintains timer 1. When receiving the indication that the data packet corresponding to PDCP SN=1 is successfully received by the receiving end (such as the underlying RLC indication or the PDCP status report indication), the PDCP layer stops the PDCP SN =1 Timer 1 corresponding to the data packet. Or, for example, the RLC layer maintenance timer 1 of the UE, when receiving the indication information that the data packet corresponding to RLC SN=1 is successfully received by the receiving end (such as the underlying hybrid automatic repeat request (Hybrid Automatic Repeat Request, HARQ) indication or RLC status report indication), the RLC layer stops timer 1 corresponding to the data packet corresponding to RLC SN=1.

Specific embodiment two

In the second specific embodiment, the above-mentioned preset condition is that the second timer expires.

It can be understood that in this embodiment, the terminal device maintains another timer, that is, the second timer, so that when the timing duration of the second timer is reached or exceeded, that is, when the preset condition is satisfied, it is reported to the network device in time. In the case of data packet sending timeout, the network side can timely and accurately learn that the relevant communication service has entered or is about to enter an unavailable state.

Optionally, the timing duration of the foregoing second timer may be configured by a network device or agreed upon by a protocol.

Further optionally, in the second specific embodiment, the start condition of the above-mentioned second timer includes but is not limited to: the third timer expires.

Wherein, the third timer corresponds to N data packets.

Regarding the aforementioned numbering, in an example, when the PDCP layer of the transmitting end device maintains the aforementioned third timer, the numbering may be a PDCP count value (that is, COUNT) or a PDCP sequence number (Sequence Number, SN) and so on. In another example, when the RLC layer of the sending end device maintains the foregoing third timer, the number may be an RLC sequence number (Sequence Number, SN) or the like.

Optionally, the above-mentioned third timer may be maintained by the PDCP layer or the radio link control RLC layer of the terminal device.

Optionally, the timing duration of the foregoing third timer may be configured by a network device or agreed upon by a protocol. Further, the timing duration of the third timer may be greater than or equal to the maximum delay duration of the data packet, and less than or equal to the difference between the survival time and the maximum delay duration of the data packet. Wherein, the survival time is the survival time of the Uu port obtained by mapping the survival time of the application layer of the terminal device; the survival time of the Uu port may be provided by the core network to the wireless access network.

Optionally, the configuration granularity of the foregoing third timer is based on data radio bearer (Data Radio Bearer, DRB) or quality of service flow (Quality of Service-flow, Qos-flow). In one example, a third timer is shared every (per) DRB or every (per) Qos-flow.

It can be seen from the above that the third timer is a timer with the same properties as the first timer.

Further optionally, in the second embodiment, the start condition of the third timer includes but is not limited to one of the following:

(1) After the data packet corresponding to the third timer arrives. That is, whenever a data packet arrives, start the third timer corresponding to the data packet, and further start a timer after the data packet arrives, that is, the third timer, if the third timer is further reached or exceeded If the timing duration of the second timer (or the third timer expires), then another timer, the second timer, is further started; then, if the timing duration of the second timer (or the second timer) is further reached or exceeded If the timer expires), it can be considered that the preset condition for sending the above-mentioned first information to the network device is satisfied.

(2) The data packet corresponding to the third timer arrives and reaches the second preset duration. That is to say, whenever a data packet arrives and the duration of the arrival of the data packet reaches a certain length of time, that is, the second preset length of time, a timer is started, that is, the third timer, if the third timer is further reached or exceeded If the timing duration of the second timer is reached (or the third timer expires), then another timer, the second timer, is further started; then, if the timing duration of the second timer is further reached or exceeded, it can be considered as satisfying The preset condition for sending the above-mentioned first information.

Wherein, the arrival of the data packet can be understood as the arrival of the data packet from the upper layer to the protocol layer maintaining the third timer, and it can also be understood as the protocol layer maintaining the third timer receiving the data packet from the upper layer.

Further optionally, the stop condition of at least one of the above-mentioned second timer and third timer includes but is not limited to one of the following:

The data packet corresponding to the third timer is successfully sent. That is, if it is determined that the data packet corresponding to the third timer is successfully sent before the timing duration of the third timer is reached or exceeded, the operation of the second timer and/or the third timer can be stopped.

In an example, the successful transmission of the data packet may be that a protocol entity (such as a PDCP entity) maintaining a third timer submits the above-mentioned data packet to the bottom layer (such as an RLC entity). It may also be that the data packet corresponding to the third timer is sent from the sending end device (for example, sent from the air interface).

The opposite entity indicates that the data packet corresponding to the third timer is successfully received. Wherein, the opposite-end entity may refer to the entity at the receiving end of the data packet.

In an example, the indication by the peer entity that the data packet was successfully received may be indicated by a status report. For example, the third timer is maintained at the PDCP layer, and the opposite PDCP entity is indicated by the PDCP status report, or the third timer is maintained at the RLC layer, and the opposite RLC entity is indicated by the RLC status report.

The underlying entity indicates that the data packet corresponding to the third timer is successfully received. Wherein, the underlying entity may refer to the underlying entity of the sender of the data packet.

In an example, the bottom layer entity indicating that the data packet corresponding to the third timer is successfully received may be indicated through bottom layer HARQ feedback and/or bottom layer RLC feedback.

Optionally, for the above b) and c), it can also be understood as: receiving the successful transmission indication of the data packet corresponding to the third timer, that is, the success of the data packet corresponding to the third timer The transmission instructions may include but are not limited to b) and c) above.

Further optionally, in the data transmission method of the embodiment of the present application, it may also include, but is not limited to, one of the following specific embodiments:

Specific embodiment one

In specific embodiment 1, after sending the first information to the network device, the following content may be further included:

Receiving the uplink authorization configured by the network device.

Further optionally, in this specific embodiment 1, the following content may also be included:

Transmitting the at least one data packet according to the uplink authorization.

It can be understood that the transmission of the at least one data packet that has timed out through the uplink authorization configured on the network side ensures timely data transmission, thereby improving the availability of communication services.

Optionally, the foregoing uplink authorization carries second information, and the second information is used to indicate at least one of the following:

(1) The uplink authorization is applicable to a specific logical channel.

Further optionally, the foregoing step of transmitting the at least one data packet according to the uplink authorization may specifically include the following content: according to the second information, the uplink authorization is allocated to the specific logical channel. In this way, the transmission of at least one data packet that has timed out can be realized based on the uplink grant corresponding to the specific logical channel.

(2) The uplink authorization is applicable to a specific logical channel group.

Further optionally, the foregoing step of transmitting the at least one data packet according to the uplink authorization may specifically include the following content: according to the second information, the uplink authorization is allocated to the specific logical channel group. In this way, the transmission of at least one data packet that has timed out can be realized based on the uplink grant corresponding to the specific logical channel group.

(3) The uplink authorization is applicable to specific types of data packets.

Further optionally, the foregoing step of transmitting the at least one data packet according to the uplink authorization may specifically include the following content: according to the second information, the logical channel corresponding to the specific type of data packet is allocated the uplink Authorization. In this way, the transmission of a specific type of data packet can be realized based on the uplink authorization corresponding to the specific logical channel. Wherein, the specific type of data includes but is not limited to at least one of the following:

a) A data packet corresponding to the timer that has timed out; optionally, the data packet corresponding to the timer that has timed out may include: a data packet corresponding to the first timer or the third timer that has timed out.

b) A data packet corresponding to the timer that is about to expire; optionally, the data packet corresponding to the timer that is about to expire may include: a data packet corresponding to the first timer or the third timer that is about to expire.

(4) Send the at least one data packet preferentially. That is, when the corresponding uplink authorization configured by the network device is received, at least one data packet whose corresponding first timer or third timer expires may be sent first.

In an example, the PDCP layer maintains the timer 1, the timer 1 corresponding to PDCP SN=1 expires, and the timer 1 corresponding to PDCP SN=2 has just started, then the PDCP layer preferentially sends the data packet corresponding to PDCP SN=1 .

(5) Automatically retransmit the at least one data packet. That is, when the corresponding uplink authorization configured by the network device is received, at least one data packet whose corresponding first timer or third timer expires can be automatically retransmitted.

In an example, the PDCP layer maintains the timer 1, and the data packet corresponding to PDCP SN=1 has been sent, but when the corresponding timer exceeds 1, the information indicating that the data packet is successfully transmitted has not been received, and the data packet is retransmitted The data packet.

Specific embodiment two

In the second embodiment, after sending the first information to the network device, it may further include the following content:

Receiving a reconfiguration message sent by the network device, where the reconfiguration message is used to adjust a configuration of a logical channel corresponding to a radio bearer, and the radio bearer corresponds to the at least one data packet.

It can be understood that the logical channel configuration corresponding to the radio bearer is adjusted through the reconfiguration message configured on the network side to be further based on the adjusted logical channel configuration (for example, the adjusted logical channel priority is higher than the pre-adjusted logical channel priority, through the adjustment logic The channel priority ensures that the bearer corresponding to the data packet whose transmission timeout is timed out can be allocated to the at least one data packet whose transmission timeout is timed out in time to ensure timely data transmission, thereby improving the availability of communication services.

Optionally, in the data transmission method of the embodiment of the present application, the following content may also be included:

After the first information is sent to the network device, the fourth timer is started.

Further optionally, during the operation period of the fourth timer, the data transmission method of the embodiment of the present application may further include the following content: prohibiting or not allowing the sending of the first information to the network device.

Further optionally, in the data transmission method of the embodiment of the present application, the following content may also be included:

In the case of receiving the uplink grant or the reconfiguration message, stop the fourth timer.

It can be understood that after the above-mentioned first information is sent to the network device, another timer, that is, a fourth timer, can be started. During the running of the fourth timer, the UE is not allowed to send the first information to the network side again. After receiving the uplink grant or reconfiguration message allocated by the network side, the UE stops the fourth timer. If the fourth timer is not running (the not running includes the fourth timer not being started, the fourth timer is stopped after being started, the fourth timer has timed out, etc.), the UE is allowed Send indication information, that is, the above-mentioned first information, to the network side, where the indication information is used to indicate that there is a data packet sending timeout on the UE side.

As shown in FIG. 2, an embodiment of the present application provides a data transmission method, which is executed by a network device, and the method includes the following process steps:

Step 201: Receive first information sent by a terminal device when a preset condition is met, where the first information is used to indicate that the terminal device has at least one data packet sending timeout.

In the embodiment of the present application, when the sending end, namely the terminal device, has at least one data packet sending timeout (for example, when it is not sent at all or is not correctly received by the receiving end, that is, the network device), it will cause the application on the receiving end to enter an unavailable state. At this time, the first information sent by the terminal device when a certain condition is met, that is, a preset condition, can be received, so that the network device can timely learn that the terminal device has sent at least one data packet overtime. In this way, through this embodiment, the network device can timely know whether the relevant communication service has entered or is about to enter the unavailable state, so as to control the data transmission in time, ensure the data transmission in time, and improve the availability of the communication service.

It should be noted that the first information received above can be sent by the terminal device in different ways, and its related content can refer to the relevant description in the data transmission method performed by the terminal device shown in FIG. 1, for example, by sending SR , By sending BSR, initiating random access process through PRACH resource, through PDCP layer or RLC layer user plane signaling, through PDCP layer or RLC layer control plane signaling, or through MAC layer signaling, etc., which will not be repeated here. .

Specific embodiment one

It can be understood that, in this embodiment, the first timer corresponding to the above at least one data packet can be maintained by the terminal device, so that when the timing duration of the first timer is reached or exceeded, that is, the preset condition is met, the terminal device can report to the network The device timely reports that it has a data packet sending timeout situation, so that the network side can timely and accurately learn that the relevant communication service has entered or is about to enter an unavailable state, so as to adjust the data transmission strategy.

Optionally, the configuration granularity of the foregoing first timer is based on data radio bearer DRB or quality of service flow Qos-flow. In one example, one first timer is shared for every DRB or every Qos-flow.

It should be noted that the relevant content of the start condition and the stop condition of the first timer can refer to the relevant description in the data transmission method executed by the terminal device shown in FIG. 1, and details are not repeated here.

Specific embodiment two

It can be understood that, in this embodiment, the above-mentioned second timer may be maintained by the terminal device, so that when the timing duration of the second timer is reached or exceeded, that is, when the preset condition is satisfied, the terminal device can promptly feed back it to the network device. There are cases where the data packet is sent overtime, so that the network side can timely and accurately learn that the relevant communication service has entered or is about to enter an unavailable state.

It should be noted that the start condition and stop condition of the third timer, and the stop condition of the second timer, etc., can refer to the relevant description in the data transmission method executed by the terminal device shown in FIG. This will not be repeated here.

Further optionally, before the first information sent by the terminal device is received, the data transmission method of the embodiment of the present application further includes but is not limited to one of the following: configuring the at least one timer; configuring the second timer And the third timer. For example, configure the timing duration and granularity of each timer.

Optionally, the data transmission method in the embodiment of this application may further include but is not limited to one of the following specific embodiments:

Specific embodiment one

In specific embodiment 1, the method further includes the following content: configuring an uplink authorization.

It can be understood that the configured uplink authorization allows the terminal device to transmit at least one data packet that has timed out based on the uplink authorization to ensure timely data transmission, thereby improving the availability of communication services.

Optionally, the uplink grant carries second information; wherein, the second information is used to indicate at least one of the following:

(1) The uplink authorization is used for specific logical channel allocation. Wherein, the specific logical channel may be used by the terminal device for the transmission of at least one data packet whose sending timeout is described above.

Optionally, the foregoing second information may be used by the terminal device to allocate the uplink grant to the specific logical channel. In this way, the terminal device can realize the transmission of at least one data packet that has timed out based on the uplink grant corresponding to the specific logical channel.

(2) The uplink authorization is used for a specific logical channel group. Wherein, the specific logical channel group may be used by the terminal device for the transmission of at least one data packet whose sending timeout is described above.

Optionally, the foregoing second information may be used by the terminal device to allocate the uplink grant to the specific logical channel group. In this way, the terminal device can implement the transmission of at least one data packet that has timed out based on the uplink grant corresponding to the specific logical channel group.

(3) The uplink authorization is used for a specific type of data packet. Wherein, the specific type of data includes at least one of the following:

Optionally, the foregoing second information may be used by the terminal device to allocate the uplink grant to the logical channel corresponding to the specific type of data packet. In this way, the terminal device can implement the transmission of a specific type of data packet based on the uplink authorization corresponding to the specific logical channel.

Specific embodiment two

In the second embodiment, the method further includes the following content: sending a reconfiguration message, the reconfiguration message is used to adjust the configuration of a logical channel corresponding to a radio bearer, and the radio bearer corresponds to the at least one data packet.

It can be understood that by sending a reconfiguration message to the terminal device, the terminal device can adjust the logical channel configuration corresponding to the radio bearer according to the reconfiguration message, and further based on the adjusted logical channel configuration (for example, the adjusted logical channel priority is higher than the adjusted logical channel configuration). The previous logical channel priority, by adjusting the logical channel priority to ensure that the bearer corresponding to the data packet with the timeout transmission can be allocated to at least one data packet with the transmission timeout in time, to ensure timely data transmission, thereby improving the availability of communication services.

Referring to FIG. 3, an embodiment of the present application provides a terminal device 300, and the terminal device 300 includes:

The sending module 301 is configured to send first information to a network device when a preset condition is met, where the first information is used to indicate that the terminal device has at least one data packet sending timeout.

Optionally, in the terminal device 300 of the embodiment of the present application, the foregoing preset condition includes one of the following:

The first timer corresponding to the N data packets expires; the second timer expires.

Optionally, in the terminal device 300 of the embodiment of the present application, the value of N is agreed upon by a protocol or configured by the network device, where the value of N is an integer value greater than or equal to 1.

Optionally, in the terminal device 300 of the embodiment of the present application, in the case where the foregoing preset condition is that the first timer corresponding to the N data packets expires, the start condition of the foregoing first timer includes one of the following :

After the data packet corresponding to the first timer arrives; the data packet corresponding to the first timer arrives and reaches a first preset duration.

Optionally, in the terminal device 300 of the embodiment of the present application, the stop condition of the above-mentioned first timer includes one of the following:

The data packet corresponding to the first timer is successfully sent; a successful transmission indication of the data packet corresponding to the first timer is received.

Optionally, in the terminal device 300 of the embodiment of the present application, in the case where the stop condition of the first timer is that the successful transmission indication of the data packet corresponding to the first timer is received, the first The successful transmission indication of the data packet corresponding to the timer includes one of the following:

The opposite entity indicates that the data packet corresponding to the first timer is successfully received; the underlying entity indicates that the data packet corresponding to the first timer is successfully received.

Optionally, in the terminal device 300 of the embodiment of the present application, in the case where the foregoing preset condition is that the second timer expires, the start condition of the foregoing second timer includes: the third timer expires.

Optionally, the terminal device 300 of the embodiment of the present application may further include: a first processing module, configured to perform one of the following operations when the foregoing third timer expires and the second timer is running :

Do not start a new second timer; do not restart the second timer.

It can be understood that, in the embodiment of the present application, when the foregoing third timer expires and the second timer is not running, a new second timer is started or a second timer that is not currently running is restarted.

Optionally, in the terminal device 300 of the embodiment of the present application, the start condition of the above-mentioned third timer includes one of the following:

After the data packet corresponding to the third timer arrives; the data packet corresponding to the third timer arrives and reaches the second preset duration.

Optionally, in the terminal device 300 of the embodiment of the present application, the stop condition of at least one of the second timer and the third timer includes one of the following:

The data packet corresponding to the third timer is successfully sent; the peer entity indicates that the data packet corresponding to the third timer is successfully received; the underlying entity indicates that the data packet corresponding to the third timer is successfully received.

Optionally, the terminal device 300 of the embodiment of the present application may further include: a receiving module, configured to perform one of the following operations:

Receiving the uplink authorization configured by the network device; receiving a reconfiguration message sent by the network device, the reconfiguration message is used to adjust the configuration of a logical channel corresponding to a radio bearer, the radio bearer corresponding to the at least one data packet .

Optionally, the terminal device 300 of the embodiment of the present application may further include: a transmission module, configured to transmit the at least one piece of data according to the uplink authorization when the uplink authorization configured by the network device is received Bag.

Optionally, in the terminal device 300 of the embodiment of the present application, the foregoing uplink authorization carries second information, and the second information is used to indicate at least one of the following:

The uplink grant is applicable to a specific logical channel; the uplink grant is applicable to a specific logical channel group; the uplink grant is applicable to a specific type of data packet.

Optionally, in the terminal device 300 of the embodiment of the present application, the above-mentioned transmission module is configured to perform one of the following operations:

According to the second information, assign the uplink grant to the specific logical channel; according to the second information, assign the uplink grant to the specific logical channel group; according to the second information, The logical channel corresponding to the specific type of data packet is allocated the uplink authorization; the at least one data packet is sent preferentially; the at least one data packet is automatically retransmitted.

Optionally, in the terminal device 300 of the embodiment of the present application, the aforementioned sending module 301 may be specifically configured to send the first information in one of the following ways:

By sending a scheduling request SR; by sending a trigger buffer status report BSR; by sending a dedicated physical random access channel PRACH resource to initiate a random access process; by packet data convergence protocol PDCP layer or radio link control RLC layer user plane signaling; by PDCP layer or RLC layer control plane signaling; media access control MAC layer signaling.

Optionally, in the terminal device 300 of the embodiment of the present application, the sending module 301 described above may be specifically configured to perform at least one:

Trigger the SR; send the SR through a dedicated SR resource, where the dedicated SR resource is used to apply for uplink authorization for a specific type of data packet; send the SR to the network device.

Optionally, in the terminal device 300 of the embodiment of the present application, the above-mentioned specific type of data includes at least one of the following:

The data packet corresponding to the timer that has timed out; the data packet corresponding to the timer that is about to expire.

Optionally, in the terminal device 300 of the embodiment of the present application, the sending module 301 can be specifically configured to perform at least the following operations when the method of sending the first information to the network device is the sending of the BSR: one:

Trigger the BSR; send the BSR to the network device.

Optionally, in the terminal device 300 of the embodiment of the present application, in the case where the method of sending the first information to the network device is by sending the SR, the SR carries at least one of the data volume information and the remaining time information. One item; in the case where the method of sending the first information to the network device is the sending of the BSR, the BSR carries at least one of data volume information and remaining time information.

Optionally, in the terminal device 300 of the embodiment of the present application, the aforementioned data volume information is used to indicate the total data volume of a specific type of data packet.

Optionally, in the terminal device 300 of the embodiment of the present application, the above remaining time information is used to indicate that the timer distance corresponding to a specific type of data packet reaches the remaining time length of the preset timing duration.

Optionally, the terminal device 300 of the embodiment of the present application may further include: a second processing module, configured to start a fourth timer after the first information is sent to the network device.

Optionally, in the terminal device 300 of the embodiment of the present application, the above-mentioned second processing module may also be used for:

During the operation period of the fourth timer, sending the first information to the network device is prohibited or not allowed.

It can be understood that the terminal device 300 provided in the embodiment of the present application can implement the aforementioned data transmission method executed by the terminal device 300, and the relevant explanations about the data transmission method are applicable to the terminal device 300, and will not be repeated here.

Referring to FIG. 4, an embodiment of the present application provides a network device 400, and the network device 400 includes:

The receiving module 401 is configured to receive first information sent by a terminal device when a preset condition is met, and the first information is used to indicate that the terminal device has sent at least one data packet overtime.

Optionally, in the network device 400 of the embodiment of the present application, the foregoing preset condition includes one of the following:

Optionally, in the network device 400 of the embodiment of the present application, the value of N is agreed upon by a protocol or configured by the network device, where the value of N is an integer value greater than or equal to 1.

Optionally, the network device 400 of the embodiment of the present application may further include one of the following:

The configuration module is used to configure the uplink authorization; the sending module is used to send the reconfiguration message, the reconfiguration message is used to adjust the configuration of the logical channel corresponding to the radio bearer, and the radio bearer corresponds to the at least one data packet.

Optionally, in the network device 400 of the embodiment of the present application, in the case where the uplink authorization is configured above, the uplink authorization carries second information; wherein, the second information is used to indicate at least one of the following :

The uplink authorization is used for specific logical channel allocation; the uplink authorization is used for a specific logical channel group; the uplink authorization is used for a specific type of data packet.

Optionally, in the network device 400 of the embodiment of the present application, in the case where the foregoing second information is used to indicate that the uplink authorization is used for a specific type of data packet, the specific type of data includes at least one of the following:

Optionally, in the network device 400 of the embodiment of the present application, in the case where the foregoing preset condition is that the second timer expires, the start condition of the second timer includes: the third timer expires.

Optionally, in the network device 400 of the embodiment of the present application, the aforementioned configuration module may also be used to perform one of the following operations before the first information sent by the terminal device is received:

Configure the at least one timer; configure the second timer and the third timer.

It can be understood that the network device 400 provided by the embodiment of the present application can implement the aforementioned data transmission method executed by the network device 400, and the relevant explanations about the data transmission method are applicable to the network device 400, and will not be repeated here.

In the embodiment of the present application, when the sending end, ie, the terminal device, has at least one packet sending timeout (for example, when it is not sent at all or is not correctly received by the receiving end, ie, the network device), the application on the receiving end will enter an unavailable state. At this time, the first information sent by the terminal device when a certain condition is met, that is, a preset condition, can be received, so that the network device can timely learn that the terminal device has sent at least one data packet overtime. In this way, through this embodiment, the network device can timely know whether the relevant communication service has entered or is about to enter the unavailable state, so as to control the data transmission in time, ensure the data transmission in time, and improve the availability of the communication service.

Fig. 5 is a block diagram of a terminal device according to another embodiment of the present application. The terminal device 500 shown in FIG. 5 includes: at least one processor 501, a memory 502, at least one network interface 504, and a user interface 503. The various components in the terminal device 500 are coupled together through the bus system 505. It can be understood that the bus system 505 is used to implement connection and communication between these components. In addition to the data bus, the bus system 505 also includes a power bus, a control bus, and a status signal bus. However, for the sake of clear description, various buses are marked as the bus system 505 in FIG. 5.

Wherein, the user interface 503 may include a display, a keyboard, or a pointing device (for example, a mouse, a trackball (trackball), a touch panel, or a touch screen, etc.).

It can be understood that the memory 502 in the embodiment of the present application may be a volatile memory or a non-volatile memory, or may include both volatile and non-volatile memory. Among them, the non-volatile memory can be read-only memory (Read-Only Memory, ROM), programmable read-only memory (Programmable ROM, PROM), erasable programmable read-only memory (Erasable PROM, EPROM), and electrically available Erase programmable read-only memory (Electrically EPROM, EEPROM) or flash memory. The volatile memory may be a random access memory (Random Access Memory, RAM), which is used as an external cache. By way of exemplary but not restrictive description, many forms of RAM are available, such as static random access memory (Static RAM, SRAM), dynamic random access memory (Dynamic RAM, DRAM), synchronous dynamic random access memory (Synchronous DRAM, SDRAM), Double Data Rate Synchronous Dynamic Random Access Memory (Double Data Rate SDRAM, DDRSDRAM), Enhanced Synchronous Dynamic Random Access Memory (Enhanced SDRAM, ESDRAM), Synchronous Link Dynamic Random Access Memory (Synchlink DRAM, SLDRAM) And Direct Rambus RAM (DRRAM). The memory 502 of the system and method described in the embodiments of the present application is intended to include, but is not limited to, these and any other suitable types of memory.

In some embodiments, the memory 502 stores the following elements, executable modules or data structures, or their subsets, or their extended sets: operating system 5021 and application programs 5022.

Among them, the operating system 5021 includes various system programs, such as a framework layer, a core library layer, a driver layer, etc., for implementing various basic services and processing hardware-based tasks. The application program 5022 includes various application programs, such as a media player (Media Player), a browser (Browser), etc., which are used to implement various application services. The program for implementing the method of the embodiment of the present application may be included in the application program 5022.

In the embodiment of the present application, the terminal device 500 further includes: a program or instruction that is stored in the memory 502 and can be run on the processor 501. When the program or instruction is executed by the processor 501, the following steps are implemented:

In the embodiment of this application, when the sending end, ie the terminal device, has at least one data packet sending timeout (for example, when it is not sent at all or is not correctly received by the receiving end, ie, the network device), it will cause the application on the receiving end to enter an unavailable state, then , In order to enable the network device to know in time whether the relevant communication service has entered or is about to enter the unavailable state, the first information can be sent to the network device under certain conditions, that is, the preset condition, so that the network device can timely It is learned that the terminal device has at least one data packet sending timeout situation. In this way, through this embodiment, the network device can timely control the transmission of data and provide effective scheduling to ensure that the data reaches the receiving end within the survival time, that is, to ensure timely data transmission, thereby improving the availability of communication services.

The method disclosed in the foregoing embodiment of the present application may be applied to the processor 501 or implemented by the processor 501. The processor 501 may be an integrated circuit chip with signal processing capability. In the implementation process, the steps of the foregoing method can be completed by an integrated logic circuit of hardware in the processor 501 or instructions in the form of software. The aforementioned processor 501 may be a general-purpose processor, a digital signal processor (Digital Signal Processor, DSP), an application specific integrated circuit (ASIC), a ready-made programmable gate array (Field Programmable Gate Array, FPGA) or other Programmable logic devices, discrete gates or transistor logic devices, discrete hardware components. The methods, steps, and logical block diagrams disclosed in the embodiments of the present application can be implemented or executed. The general-purpose processor may be a microprocessor or the processor may also be any conventional processor or the like. The steps of the method disclosed in the embodiments of the present application may be directly embodied as being executed and completed by a hardware decoding processor, or executed and completed by a combination of hardware and software modules in the decoding processor. The software module may be located in a computer-readable storage medium that is mature in the field, such as random access memory, flash memory, read-only memory, programmable read-only memory, or electrically erasable programmable memory, registers. The computer-readable storage medium is located in the memory 502, and the processor 501 reads the information in the memory 502, and completes the steps of the foregoing method in combination with its hardware. Specifically, a computer program is stored on the computer-readable storage medium, and when the computer program is executed by the processor 501, each step of the above-mentioned data transmission method embodiment is implemented.

It can be understood that the embodiments described in the embodiments of the present application may be implemented by hardware, software, firmware, middleware, microcode, or a combination thereof. For hardware implementation, the processing unit can be implemented in one or more application specific integrated circuits (ASIC), digital signal processor (Digital Signal Processing, DSP), digital signal processing equipment (DSP Device, DSPD), programmable Logic device (Programmable Logic Device, PLD), Field-Programmable Gate Array (Field-Programmable Gate Array, FPGA), general-purpose processors, controllers, microcontrollers, microprocessors, and others for performing the functions described in this application Electronic unit or its combination.

For software implementation, the technology described in the embodiments of the present application can be implemented by modules (for example, procedures, functions, etc.) that execute the functions described in the embodiments of the present application. The software codes can be stored in the memory and executed by the processor. The memory can be implemented in the processor or external to the processor.

The terminal device 500 can implement the various processes implemented by the terminal device in the foregoing embodiments, and in order to avoid repetition, details are not described herein again.

Preferably, the embodiment of the present application further provides a terminal device, including a processor, a memory, and a program or instruction stored in the memory and capable of running on the processor. The program or instruction implements the above-mentioned application when executed by the processor. Each process of the embodiment of the data transmission method in the terminal device can achieve the same technical effect. In order to avoid repetition, it will not be repeated here.

The embodiment of the present application also provides a readable storage medium, the readable storage medium stores a program or instruction, and when the program or instruction is executed by a processor, each process of the above-mentioned data transmission method embodiment applied to a terminal device is realized, And can achieve the same technical effect, in order to avoid repetition, I will not repeat them here.

Wherein, the processor is the processor in the terminal device described in the foregoing embodiment. The readable storage medium includes a computer readable storage medium, such as a computer read-only memory (Read-Only Memory, ROM), random access memory (Random Access Memory, RAM), magnetic disk, or optical disk.

Please refer to FIG. 6. FIG. 6 is a structural diagram of a network device applied in an embodiment of the present application, which can implement the details of the foregoing data transmission method and achieve the same effect. As shown in FIG. 6, the network device 600 includes: a processor 601, a transceiver 602, a memory 603, a user interface 604, and a bus interface 605, where:

In the embodiment of the present application, the network device 600 further includes: a program or instruction that is stored in the memory 603 and can run on the processor 601, and when the program or instruction is executed by the processor 601, the following steps are implemented:

In FIG. 6, the bus architecture may include any number of interconnected buses and bridges. Specifically, one or more processors represented by the processor 601 and various circuits of the memory represented by the memory 603 are linked together. The bus architecture can also link various other circuits such as peripheral devices, voltage regulators, power management circuits, etc., which are all known in the art, and therefore, no further descriptions are provided herein. The bus interface 605 provides an interface. The transceiver 602 may be a plurality of elements, including a transmitter and a receiver, and provide a unit for communicating with various other devices on the transmission medium. For different user equipment, the user interface 604 may also be an interface capable of connecting externally and internally with the required equipment. The connected equipment includes but not limited to a keypad, a display, a speaker, a microphone, a joystick, and the like.

The processor 601 is responsible for managing the bus architecture and general processing, and the memory 603 can store data used by the processor 601 when performing operations.

Preferably, an embodiment of the present application further provides a network device, including a processor, a memory, and a program or instruction stored in the memory and capable of running on the processor. The program or instruction implements the above-mentioned application when executed by the processor. Each process of the embodiment of the data transmission method for a network device can achieve the same technical effect. In order to avoid repetition, the details are not repeated here.

The embodiment of the present application also provides a readable storage medium, and the readable storage medium stores a program or instruction, and when the program or instruction is executed by a processor, each process of the above-mentioned data transmission method embodiment applied to a network device is realized, And can achieve the same technical effect, in order to avoid repetition, I will not repeat them here.

Wherein, the processor is the processor in the network device described in the foregoing embodiment. The readable storage medium includes a computer readable storage medium, such as a computer read-only memory (Read-Only Memory, ROM), random access memory (Random Access Memory, RAM), magnetic disk, or optical disk.

It should be noted that in this article, the terms "include", "include" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, It also includes other elements that are not explicitly listed, or elements inherent to the process, method, article, or device. If there are no more restrictions, the element defined by the sentence "including a..." does not exclude the existence of other identical elements in the process, method, article, or device that includes the element. In addition, it should be pointed out that the scope of the methods and devices in the embodiments of the present application is not limited to performing functions in the order shown or discussed, and may also include performing functions in a substantially simultaneous manner or in reverse order according to the functions involved. The functions are performed, for example, the described method may be performed in a different order from the described order, and various steps may also be added, omitted, or combined. In addition, features described with reference to certain examples may be combined in other examples.

Through the description of the above implementation manners, those skilled in the art can clearly understand that the above-mentioned embodiment method can be implemented by means of software plus the necessary general hardware platform, of course, it can also be implemented by hardware, but in many cases the former is better.的实施方式。 Based on this understanding, the technical solution of this application essentially or the part that contributes to the existing technology can be embodied in the form of a software product, and the computer software product is stored in a storage medium (such as ROM/RAM, magnetic disk, The optical disc) includes several instructions to make a terminal (which may be a mobile phone, a computer, a server, an air conditioner, or a network device, etc.) execute the methods described in the various embodiments of the present application.

The embodiments of the application are described above with reference to the accompanying drawings, but the application is not limited to the above-mentioned specific embodiments. The above-mentioned specific embodiments are only illustrative and not restrictive. Those of ordinary skill in the art are Under the enlightenment of this application, many forms can be made without departing from the purpose of this application and the scope of protection of the claims, all of which fall within the protection of this application.

Claims

A data transmission method, the method includes:

When the preset condition is met, the terminal device sends first information to the network device, where the first information is used to indicate that the terminal device has at least one data packet sending timeout.
The method according to claim 1, wherein the preset condition includes one of the following:

The first timer corresponding to the N data packets expires;

The second timer expired.
The method according to claim 2, wherein the value of N is agreed upon by a protocol or configured by the network device, wherein the value of N is an integer value greater than or equal to 1.
The method according to claim 2, wherein, in the case where the preset condition is that the first timer corresponding to the N data packets expires, the start condition of the first timer includes one of the following:

After the data packet corresponding to the first timer arrives;

The data packet corresponding to the first timer arrives and reaches the first preset duration.
The method according to claim 2, wherein the stop condition of the first timer includes one of the following:

The data packet corresponding to the first timer is successfully sent;

A successful transmission indication of the data packet corresponding to the first timer is received.
The method according to claim 5, wherein, in the case that the stop condition of the first timer is the reception of a successful transmission indication of the data packet corresponding to the first timer, the first timer The successful transmission indication of the corresponding data packet includes one of the following:

The opposite entity indicates that the data packet corresponding to the first timer is successfully received;

The underlying entity indicates that the data packet corresponding to the first timer is successfully received.
The method according to claim 2, wherein, when the preset condition is that the second timer expires, the start condition of the second timer comprises:

The third timer expires.
The method according to claim 7, wherein, in the case that the third timer expires and the second timer is running, the method further comprises one of the following:

Do not start a new second timer;

Do not restart the second timer.
The method according to claim 7, wherein the start condition of the third timer includes one of the following:

After the data packet corresponding to the third timer arrives;

The data packet corresponding to the third timer arrives and reaches the second preset duration.
The method according to claim 7, wherein the stop condition of at least one of the second timer and the third timer includes one of the following:

The data packet corresponding to the third timer is successfully sent;

The opposite entity indicates that the data packet corresponding to the third timer is successfully received;

The underlying entity indicates that the data packet corresponding to the third timer is successfully received.
The method according to claim 1, wherein the method further comprises at least one of the following:

The terminal device receives the uplink authorization configured by the network device;

The terminal device receives a reconfiguration message sent by the network device, where the reconfiguration message is used to adjust the configuration of a logical channel corresponding to a radio bearer, and the radio bearer corresponds to the at least one data packet.
The method according to claim 11, wherein, in the case of receiving the uplink authorization configured by the network device, the method further comprises:

The terminal device transmits the at least one data packet according to the uplink authorization.
The method according to claim 12, wherein the uplink authorization carries second information, and the second information is used to indicate at least one of the following:

The uplink authorization is applicable to a specific logical channel;

The uplink authorization is applicable to a specific logical channel group;

The uplink authorization is applicable to a specific type of data packet.
The method according to claim 13, wherein the transmitting the at least one data packet according to the uplink authorization includes at least one of the following:

Allocate the uplink grant to the specific logical channel according to the second information;

Allocate the uplink grant to the specific logical channel group according to the second information;

According to the second information, allocating the uplink grant to the logical channel corresponding to the specific type of data packet;

Send the at least one data packet preferentially;

The at least one data packet is automatically retransmitted.
The method according to claim 2, wherein the method of sending the first information to the network device comprises one of the following:

By sending a scheduling request SR;

BSR is triggered by sending a buffer status report;

Initiate the random access process through the dedicated physical random access channel PRACH resource;

Control the user plane signaling of the RLC layer through the PDCP layer or radio link of the packet data convergence protocol;

Control plane signaling through PDCP layer or RLC layer;

Control MAC layer signaling through media access.
The method according to claim 15, wherein, in the case that the method of sending the first information to the network device is the sending SR, the method further comprises at least one of the following:

The terminal device triggers the SR;

The terminal device sends the SR through a dedicated SR resource, where the dedicated SR resource is used to apply for uplink authorization for a specific type of data packet;

The terminal device sends the SR to the network device.
The method according to claim 16, wherein the specific type of data includes at least one of the following:

The data packet corresponding to the timer that has timed out;

The packet corresponding to the timer that is about to expire.
The method according to claim 15, wherein, in the case that the method of sending the first information to the network device is the sending of the BSR, the method further comprises at least one of the following:

Triggering the BSR by the terminal device;

The terminal device sends the BSR to the network device.
The method according to claim 15, wherein, in the case where the method of sending the first information to the network device is the sending SR, the SR carries at least one of data amount information and remaining time information;

In the case where the method of sending the first information to the network device is the sending of the BSR, the BSR carries at least one of data volume information and remaining time information.
The method according to claim 19, wherein the data amount information is used to indicate the total data amount of a specific type of data packet.
The method according to claim 19, wherein the remaining time information is used to indicate that a timer distance corresponding to a specific type of data packet reaches a remaining time length of a preset timing duration.
The method according to claim 11, wherein the method further comprises:

The terminal device starts a fourth timer after the first information is sent to the network device.
The method of claim 22, wherein the method further comprises:

The terminal device prohibits or does not allow sending the first information to the network device during the operation period of the fourth timer.
The method of claim 23, wherein the method further comprises:

The terminal device stops the fourth timer when receiving the uplink grant or the reconfiguration message.
A data transmission method, the method includes:

The network device receives the first information sent by the terminal device when the preset condition is met, where the first information is used to indicate that the terminal device has at least one data packet sending timeout.
The method according to claim 25, wherein the preset condition includes one of the following:

The first timer corresponding to the N data packets expires;

The second timer expired.
The method according to claim 26, wherein the value of N is agreed upon by a protocol or configured by the network device, and the value of N is an integer value greater than or equal to 1.
The method according to claim 26, wherein the method further comprises at least one of the following:

The network device configures uplink authorization;

The network device sends a reconfiguration message, where the reconfiguration message is used to adjust the configuration of a logical channel corresponding to a radio bearer, and the radio bearer corresponds to the at least one data packet.
The method according to claim 28, wherein, in the case of configuring the uplink grant, the uplink grant carries second information;

Wherein, the second information is used to indicate at least one of the following:

The uplink authorization is used for specific logical channel allocation;

The uplink authorization is used for a specific logical channel group;

The uplink authorization is used for a specific type of data packet.
The method according to claim 29, wherein, in a case where the second information is used to indicate that the uplink authorization is used for a specific type of data packet, the specific type of data includes at least one of the following:

The data packet corresponding to the timer that has timed out;

The packet corresponding to the timer that is about to expire.
The method according to claim 26, wherein, when the preset condition is that the second timer expires, the start condition of the second timer comprises:

The third timer expires.
The method according to claim 31, wherein before the receiving the first information sent by the terminal device, the method further comprises one of the following:

Configuring the at least one timer by the network device;

The network device configures the second timer and the third timer.
A terminal device, including:

The sending module is configured to send first information to the network device when a preset condition is met, where the first information is used to indicate that the terminal device has at least one data packet sending timeout.
The terminal device according to claim 33, wherein the preset condition includes one of the following:

The first timer corresponding to the N data packets expires;

The second timer expired.
The terminal device according to claim 34, wherein the value of N is agreed upon by a protocol or configured by the network device, wherein the value of N is an integer value greater than or equal to 1.
The terminal device according to claim 34, wherein, when the preset condition is that the first timer corresponding to the N data packets expires, the starting condition of the first timer includes one of the following:

After the data packet corresponding to the first timer arrives;

The data packet corresponding to the first timer arrives and reaches the first preset duration.
The terminal device according to claim 34, wherein the stop condition of the first timer includes one of the following:

The data packet corresponding to the first timer is successfully sent;

A successful transmission indication of the data packet corresponding to the first timer is received.
The terminal device according to claim 37, wherein, in the case where the stop condition of the first timer is the reception of a successful transmission indication of the data packet corresponding to the first timer, the first timing The successful transmission indication of the data packet corresponding to the device includes one of the following:

The opposite entity indicates that the data packet corresponding to the first timer is successfully received;

The underlying entity indicates that the data packet corresponding to the first timer is successfully received.
The terminal device according to claim 34, wherein, when the preset condition is that the second timer expires, the start condition of the second timer comprises:

The third timer expires.
The terminal device according to claim 39, wherein the terminal device further comprises: a first processing module, configured to execute the following when the third timer expires and the second timer is running One of the operations:

Do not start a new second timer;

Do not restart the second timer.
The terminal device according to claim 39, wherein the start condition of the third timer includes one of the following:

After the data packet corresponding to the third timer arrives;

The data packet corresponding to the third timer arrives and reaches the second preset duration.
The terminal device according to claim 39, wherein the stop condition of at least one of the second timer and the third timer includes one of the following:

The data packet corresponding to the third timer is successfully sent;

The opposite entity indicates that the data packet corresponding to the third timer is successfully received;

The underlying entity indicates that the data packet corresponding to the third timer is successfully received.
The terminal device according to claim 33, further comprising: a receiving module, configured to perform one of the following operations:

Receiving the uplink authorization configured by the network device;

Receiving a reconfiguration message sent by the network device, where the reconfiguration message is used to adjust a configuration of a logical channel corresponding to a radio bearer, and the radio bearer corresponds to the at least one data packet.
The terminal device according to claim 33, wherein the terminal device further comprises: a transmission module, configured to transmit the at least One packet.
The terminal device according to claim 34, wherein the uplink authorization carries second information, and the second information is used to indicate at least one of the following:

The uplink authorization is applicable to a specific logical channel;

The uplink authorization is applicable to a specific logical channel group;

The uplink authorization is applicable to a specific type of data packet.
The terminal device according to claim 44, wherein the transmission module is configured to perform at least one of the following:

Allocate the uplink grant to the specific logical channel according to the second information;

Allocate the uplink grant to the specific logical channel group according to the second information;

According to the second information, allocating the uplink grant to the logical channel corresponding to the specific type of data packet;

Send the at least one data packet preferentially;

The at least one data packet is automatically retransmitted.
The terminal device according to claim 34, wherein the sending module is specifically configured to send the first information in the following manner:

By sending a scheduling request SR;

BSR is triggered by sending a buffer status report;

Initiate the random access process through the dedicated physical random access channel PRACH resource;

Control the user plane signaling of the RLC layer through the PDCP layer or radio link of the packet data convergence protocol;

Control plane signaling through PDCP layer or RLC layer;

Control MAC layer signaling through media access.
The terminal device according to claim 47, wherein the sending module is specifically configured to perform at least one of the following when the method of sending the first information to the network device is by sending the SR:

Trigger the SR;

Sending the SR through a dedicated SR resource, where the dedicated SR resource is used to apply for uplink authorization for a specific type of data packet;

Sending the SR to the network device.
The terminal device according to claim 48, wherein the specific type of data includes at least one of the following:

The data packet corresponding to the timer that has timed out;

The packet corresponding to the timer that is about to expire.
The terminal device according to claim 47, wherein the sending module is specifically configured to perform at least one of the following when the method of sending the first information to the network device is by sending the BSR:

Trigger the BSR;

Sending the BSR to the network device.
The terminal device according to claim 47, wherein, in the case where the method of sending the first information to the network device is the sending SR, the SR carries at least one of data amount information and remaining time information ；

In the case where the method of sending the first information to the network device is the sending of the BSR, the BSR carries at least one of data volume information and remaining time information.
The terminal device according to claim 51, wherein the data amount information is used to indicate the total data amount of a specific type of data packet.
The terminal device according to claim 51, wherein the remaining time information is used to indicate that a timer distance corresponding to a specific type of data packet reaches a remaining time length of a preset timing duration.
The terminal device according to claim 43, wherein the terminal device further comprises: a second processing module, configured to start a fourth timer after the first information is sent to the network device.
The terminal device according to claim 54, wherein the second processing module is further configured to prohibit or disallow sending the first information to the network device during the operation period of the fourth timer.
The terminal device according to claim 55, wherein the second processing module is further configured to stop the fourth timer when the uplink grant or the reconfiguration message is received.
A network device including:

The receiving module is configured to receive first information sent by a terminal device when a preset condition is met, and the first information is used to indicate that the terminal device has sent at least one data packet overtime.
The network device according to claim 57, wherein the preset condition comprises one of the following:

The first timer corresponding to the N data packets expires;

The second timer expired.
The network device according to claim 58, wherein the value of N is agreed upon by a protocol or configured by the network device, wherein the value of N is an integer value greater than or equal to 1.
The network device according to claim 57, further comprising one of the following:

Configuration module, used to configure uplink authorization;

The sending module is configured to send a reconfiguration message, where the reconfiguration message is used to adjust the configuration of a logical channel corresponding to a radio bearer, and the radio bearer corresponds to the at least one data packet.
The network device according to claim 60, wherein, when the uplink authorization is configured, the uplink authorization carries second information;

Wherein, the second information is used to indicate at least one of the following:

The uplink authorization is used for specific logical channel allocation;

The uplink authorization is used for a specific logical channel group;

The uplink authorization is used for a specific type of data packet.
The network device according to claim 61, wherein, in a case where the second information is used to indicate that the uplink authorization is used for a specific type of data packet, the specific type of data includes at least one of the following:

The data packet corresponding to the timer that has timed out;

The packet corresponding to the timer that is about to expire.
The network device according to claim 58, wherein, when the preset condition is that the second timer expires, the start condition of the second timer comprises:

The third timer expires.
The network device according to claim 63, wherein the configuration module is further configured to perform one of the following operations before the first information sent by the terminal device is received:

Configuring the at least one timer;

Configure the second timer and the third timer.
A terminal device, comprising: a memory, a processor, and a program or instruction that is stored on the memory and can run on the processor. When the program or instruction is executed by the processor, the program or instruction implements as claimed in claims 1 to Steps of the method of any one of 24.
A network device, comprising: a memory, a processor, and a program or instruction stored on the memory and capable of being run on the processor, and the program or instruction is executed by the processor to implement as claimed in claims 25 to 32 steps of the method described in any one of them.
A terminal device configured to execute the downlink data processing method according to any one of claims 1 to 24.
A network device configured to execute the downlink data processing method according to any one of claims 25 to 32.
A readable storage medium on which a program or instruction is stored, and when the program or instruction is executed by a processor, the steps of the method according to any one of claims 1 to 24 are realized, or the When the program or instruction is executed by the processor, the steps of the method according to any one of claims 25 to 32 are realized.