WO2019010617A1

WO2019010617A1 - Data transmission method and device, receiving end device and sending end device

Info

Publication number: WO2019010617A1
Application number: PCT/CN2017/092406
Authority: WO
Inventors: 江小威
Original assignee: 北京小米移动软件有限公司
Priority date: 2017-07-10
Filing date: 2017-07-10
Publication date: 2019-01-17
Also published as: CN113726477A; CN108401479A; CN108401479B

Abstract

The present disclosure relates to a data transmission method and device, a receiving end device, a sending end device, and a computer-readable storage medium. The data transmission method comprises: receiving, in a reordering window, at least one data packet sent by a sending end, each data packet of the at least one data packet carrying a sequence number (SN); if at least one data packet that has arrived according to the order of SNs is received in the reordering window, parsing the received data packet, and delivering the parsed data part to an upper layer; if a data packet that has not arrived according to the order of SNs is received in the reordering window and no reordering timer is currently started, starting a reordering timer, and setting the SN corresponding to a data packet which triggers the start of the reordering timer to be the SN of a currently received data packet that has not arrived according to the order of SNs, and if all disordered data packets before the SN which has triggered the start of the reordering timer are successfully received, stopping and resetting the reordering timer.

Description

Data transmission method and device, receiving end device and transmitting end device

Technical field

The present disclosure relates to the field of communications technologies, and in particular, to a data transmission method and apparatus, a receiving end device, a transmitting end device, and a computer readable storage medium.

Background technique

With the development of communication technology, the fifth generation of mobile communication technology (5th Generation, referred to as 5G) has emerged. The 5G new radio (NR) user plane introduces a new protocol layer on top of the existing packet data convergence protocol (PDCP) layer. The new protocol layer can perform mapping between QoS flows and data bearers (DRBs), and can also add QoS flow identifiers (IDs) to upstream packets and downstream packets.

A QoS flow may be remapped by the current DRB to another DRB. When QoS flow remapping occurs, data that has been delivered to a certain DRB before the QoS flow remapping continues to be sent through the DRB, and subsequent data is sent through the newly mapped DRB. Since the time for sending data by two DRBs is different, it is difficult to ensure that the data on the DRB is received before the remapping is delivered, and the data on the DRB is received after the remapping, after the data is received, that is, the SDAP receiver may receive the out-of-order. data.

In order to solve the above technical problem, the related art is that after the DRB successfully re-maps all the data submitted by the QoS flow, the SDAP layer delivers the subsequent data to the DRB after the remapping. However, this approach can cause additional delays.

Summary of the invention

In view of this, the present application discloses a data transmission method and apparatus, a receiving end device, a transmitting end device, and a computer readable storage medium to solve the data out of order problem of QoS flow in DRB remapping, and can avoid additional Delay.

According to a first aspect of the embodiments of the present disclosure, a data transmission method is provided, which is applied to a receiving end, and the method includes:

Receiving at least one data packet sent by the transmitting end in the reordering window, each of the at least one data packet carrying a serial number SN;

If at least one data packet arriving in the SN order is received in the reordering window, parsing the received data packet, and submitting the parsed data portion to the upper layer;

If a data packet that does not arrive in the SN order is received in the reordering window and the reordering timer is not currently started, the reordering timer is started, and the data packet that starts the reordering timer is triggered. The corresponding SN is set to the currently received SN of the data packet that is not in the SN order, and if all the out-of-order data packets before the SN that triggers the reordering timer are successfully received, the weight is stopped and reset. Sort timer.

In an embodiment, the method further includes:

After the stopping and resetting the reordering timer, if there is still a data packet waiting to be received in the reordering window that is not in the SN order, the reordering timer is started again, and the triggering is started. The SN corresponding to the data packet of the reordering timer is set to the maximum SN of the data packet currently waiting to be received.

In an embodiment, the method further includes:

If the SN of the received data packet corresponds to the lower boundary of the reordering window, move the lower boundary of the reordering window to the SN corresponding to the next data packet waiting to be received, and update the reordering window. Upper boundary.

In an embodiment, the method further includes:

Whenever the SN of a received data packet is greater than the maximum SN, if the SN of the currently received data packet is not in the reordering window, the currently received data packet is discarded if the current received The SN of the data packet is within the reordering window, and the maximum SN is updated to the SN of the currently received data packet.

In an embodiment, the method further includes:

Before the parsing of the received data packet, determining to apply a reordering function to the service quality flow corresponding to the data in the received data packet, and maintaining the reordering window.

In an embodiment, the method further includes:

And before the determining to apply the reordering function to the service quality flow corresponding to the data in the received data packet, turning on the reordering function on the service quality flow.

In an embodiment, if the receiving end is a user equipment UE, the performing the reordering function on the service quality stream includes:

Receiving the configuration information sent by the base station, and performing the reordering function on the service quality flow according to the configuration information, and enabling the reordering function on the data bearer DRB in the acknowledged AM mode of the service quality flow mapping, or Transmitting the reordering function to the data bearer DRB in the AM mode or the unacknowledged UM mode of the service quality flow mapping; or

The reordering function is always enabled for the service quality flow.

In an embodiment, the method further includes:

Determining that the service quality flow occurs according to the received downlink data of the service quality flow and the reflected service quality attribute opened for the service quality flow, before the re-sorting function is enabled for the service quality flow. DRB remapping; or

Determining, by the received service quality flow identifier carried in the downlink data of the service quality flow, that the service quality flow is DRB remapping.

In an embodiment, if the receiving end is a base station, the performing the reordering function on the service quality flow, including:

After the UE is configured to perform DRB remapping on the uplink data of the service quality flow, the re-sorting function is enabled on the service quality flow.

According to a second aspect of the embodiments of the present disclosure, a data transmission method is provided, which is applied to a transmitting end, and the method includes:

Determining data bearer DRB remapping of the service quality flow corresponding to the data in the data packet;

A sequence number SN is added to the packet header of the data packet, and a data packet carrying the SN is sent to the receiving end.

In an embodiment, if the sending end is the user equipment UE, the determining the DRB remapping of the service quality flow corresponding to the data in the data packet includes:

Receiving configuration information sent by the base station, where the configuration information is used to instruct the UE to perform DRB remapping on the uplink data of the service quality flow;

Determining, according to the configuration information, DRB remapping of the service quality flow corresponding to the data in the data packet.

And if the service quality flow starts to reflect the service quality attribute, if the downlink data of the service quality flow is received on the DRB different from the previous downlink data that receives the service quality flow, determining the data in the data packet A DRB remapping occurs in the corresponding service quality flow.

According to a third aspect of the embodiments of the present disclosure, there is provided a data transmission apparatus, which is applied to a receiving end, the apparatus comprising:

The receiving module is configured to receive at least one data packet sent by the sending end in the reordering window, each of the at least one data packet carrying a serial number SN;

Parsing the delivery module, configured to: if the receiving module receives the arrival in the SN order in the reordering window If there is one less packet, the received data packet is parsed, and the parsed data portion is submitted to the upper layer;

a processing module, configured to: if the receiving module receives a data packet that is not in the SN order in the reordering window and does not currently start a reordering timer, start the reordering timer, and trigger The SN corresponding to the data packet that starts the reordering timer is set to the currently received SN of the data packet that is not in the SN order, and all the out-of-order data before the SN that triggers the reordering timer is successfully received. The packet stops and resets the reordering timer.

In an embodiment, the apparatus further includes:

Activating a setting module, configured to, after the processing module stops and reset the reordering timer, if the reordering window still has a data packet waiting to be received in a non-SN order, restarting the The reordering timer sets the SN corresponding to the data packet triggering the reordering timer to the maximum SN of the data packet currently waiting to be received.

In an embodiment, the apparatus further includes:

a mobile update module, configured to: if a SN of the data packet received by the receiving module corresponds to a lower boundary of the reordering window, move a lower boundary of the reordering window to a next data packet waiting to be received SN and update the upper boundary of the reordering window.

In an embodiment, the apparatus further includes:

And discarding the update module, configured to discard the current receiving if the SN of the currently received data packet is not in the reordering window whenever the SN of the receiving module receives a data packet is greater than the maximum SN And the data packet to which the maximum SN is updated to the SN of the currently received data packet if the SN of the currently received data packet is within the reordering window.

In an embodiment, the apparatus further includes:

Determining the maintenance module, configured to: before the parsing module parses the received data packet, determine to apply a reordering function to the service quality flow corresponding to the data in the received data packet, and maintain the reordering window.

In an embodiment, the apparatus further includes:

And the opening module is configured to enable the reordering function on the service quality flow before the determining that the maintenance module determines to apply a reordering function to the service quality flow corresponding to the data in the received data packet.

In an embodiment, if the receiving end is a user equipment UE, the opening module includes:

The first opening unit is configured to receive the configuration information sent by the base station, and enable the reordering function on the service quality flow according to the configuration information, and map the data bearer DRB in the confirmed AM mode to the service quality flow mapping Open Deactivating the reordering function, or enabling the reordering function on the data bearer DRB in the AM mode or the unacknowledged UM mode of the service quality flow mapping; or

The second opening unit is configured to always enable the reordering function for the quality of service stream.

In an embodiment, the opening module further includes:

a first determining unit, configured to: after the second initiating unit always enables the reordering function on the service quality flow, according to the received downlink data of the service quality flow and opened for the service quality flow Reflecting a service quality attribute, determining that the service quality flow has a DRB remapping; or

a second determining unit, configured to determine, according to the received service quality flow identifier carried in the downlink data of the service quality flow, before the second initiating unit always enables the reordering function on the service quality flow The DRB remapping occurs in the service quality flow.

In an embodiment, if the receiving end is a base station, the opening module is configured to:

According to a fourth aspect of the embodiments of the present disclosure, there is provided a data transmission apparatus, which is applied to a transmitting end, the apparatus comprising:

a determining module configured to determine a data bearer DRB remapping of the service quality flow corresponding to the data in the data packet;

Adding a sending module, configured to add a sequence number SN to the packet header of the data packet after the determining module determines that the service quality stream corresponding to the data in the data packet is DRB remapping, and send the carrying SN to the receiving end data pack.

In an embodiment, if the sending end is a user equipment UE, the determining module includes:

The receiving unit is configured to receive configuration information sent by the base station, where the configuration information is used to instruct the UE to perform DRB remapping on the uplink data of the service quality flow;

The first determining unit is configured to determine, according to the configuration information received by the receiving unit, DRB remapping of the service quality flow corresponding to the data in the data packet.

a second determining unit, configured to: if the service quality flow starts to reflect the quality of service attribute, if the downlink data of the service quality flow is received on the DRB different from the previous downlink data that receives the service quality flow, Then determining that the service quality flow corresponding to the data in the data packet is DRB remapping.

According to a fifth aspect of the embodiments of the present disclosure, a receiving end device is provided, including:

processor;

a memory for storing processor executable instructions;

Wherein the processor is configured to:

According to a sixth aspect of the embodiments of the present disclosure, a transmitting device is provided, including:

processor;

a memory for storing processor executable instructions;

Wherein the processor is configured to:

According to a seventh aspect of the embodiments of the present disclosure, there is provided a computer readable storage medium having stored thereon a computer program, the program being implemented by a processor to implement the steps of the data transmission method.

According to an eighth aspect of the embodiments of the present disclosure, there is provided a computer readable storage medium having stored thereon a computer program, the program being executed by a processor to implement the steps of the data transmission method.

The technical solutions provided by the embodiments of the present disclosure may include the following beneficial effects:

The reordering timer is started by receiving a packet that is not in the SN order within the reordering window and the reordering timer is not currently started, waiting for the arrival of the data packet in the SN order, and receiving in the reordering window At least one data packet arriving in the SN order is parsed, and then the parsed data portion is submitted to the upper layer, thereby realizing the data transmission in sequence, thereby solving the data disorder problem of the QoS flow in the DRB remapping, and Avoid extra delays.

Re-starting reordering timing by still waiting for incoming packets that are not in SN order within the reordering window And setting the SN corresponding to the data packet triggering the reordering timer to the maximum SN of the data packet currently waiting to be received, to avoid frequently starting the shutdown reordering timer, and reducing waste of resources at the receiving end.

When the SN of the received data packet corresponds to the lower boundary of the reordering window, the lower boundary of the reordering window is moved to the SN corresponding to the next data packet waiting to be received, and the upper boundary of the reordering window is updated, thereby passing Move the upper and lower boundaries of the reordering window to receive packets of different SNs within the reordering window.

Whenever a packet of a larger SN is received, if the SN of the currently received data packet is not in the reordering window, the currently received data packet is discarded if the SN of the currently received data packet is in the reordering window. Then, the maximum SN is updated to the SN of the currently received data packet, thereby achieving the purpose of maintaining the maximum SN.

The reordering function is applied by determining the service quality flow corresponding to the data in the received data packet, and the reordering window is maintained, thereby providing conditions for subsequently receiving the data packet in the reordering window.

The reordering function is enabled for the service quality flow, thereby providing conditions for subsequent application of the reordering function to the service quality flow.

The reordering function can be enabled for the service quality flow in a variety of ways, and the implementation manner is flexible and diverse.

The DRB remapping of the service quality flow can be determined in various ways, and the implementation manner is flexible and diverse.

Determining the DRB remapping by determining the service quality flow corresponding to the data in the data packet, then adding the SN in the packet header of the data packet, and sending the data packet carrying the SN to the receiving end, so that the receiving end can determine the transmission order of the data packet according to the SN, thereby It provides conditions for transmitting data in sequence, thereby providing a condition for solving the data out-of-order problem of QoS flow in DRB remapping for low latency.

The DRB remapping may be performed by receiving the configuration information sent by the base station, and determining the DRB remapping of the service quality flow corresponding to the data in the data packet according to the configuration information.

After the service quality flow starts to reflect the service quality attribute, if the downlink data of the service quality flow is received on the DRB different from the downlink data of the previous service quality flow, it is determined that the service quality flow corresponding to the data in the data packet is DRB heavy. Mapping, the implementation is simple.

The above general description and the following detailed description are intended to be illustrative and not restrictive.

DRAWINGS

The accompanying drawings, which are incorporated in the specification of FIG

1 is a schematic diagram of a protocol stack structure after adding an SDAP layer according to an exemplary embodiment of the present application;

2 is a flowchart of a data transmission method according to an exemplary embodiment of the present application;

FIG. 3 is a flowchart of another data transmission method according to an exemplary embodiment of the present application; FIG.

FIG. 4A is a flowchart of another data transmission method according to an exemplary embodiment of the present application; FIG.

FIG. 4B is a flowchart of another data transmission method according to an exemplary embodiment of the present application; FIG.

4C is a flowchart of another data transmission method according to an exemplary embodiment of the present application;

FIG. 5 is a flowchart of still another data transmission method according to an exemplary embodiment of the present application; FIG.

FIG. 6 is a block diagram of a data transmission apparatus according to an exemplary embodiment;

FIG. 7A is a block diagram of another data transmission apparatus according to an exemplary embodiment; FIG.

FIG. 7B is a block diagram of another data transmission apparatus according to an exemplary embodiment; FIG.

FIG. 7C is a block diagram of another data transmission apparatus according to an exemplary embodiment; FIG.

FIG. 8A is a block diagram of another data transmission apparatus according to an exemplary embodiment; FIG.

FIG. 8B is a block diagram of another data transmission apparatus according to an exemplary embodiment; FIG.

FIG. 9A is a block diagram of another data transmission apparatus according to an exemplary embodiment; FIG.

FIG. 9B is a block diagram of another data transmission apparatus according to an exemplary embodiment; FIG.

FIG. 10 is a block diagram of still another data transmission apparatus according to an exemplary embodiment; FIG.

FIG. 11A is a block diagram of still another data transmission apparatus according to an exemplary embodiment; FIG.

FIG. 11B is a block diagram of still another data transmission apparatus according to an exemplary embodiment; FIG.

FIG. 12 is a block diagram showing a data transmission apparatus according to an exemplary embodiment;

FIG. 13 is a block diagram of another suitable data transmission device, according to an exemplary embodiment.

Detailed ways

Exemplary embodiments will be described in detail herein, examples of which are illustrated in the accompanying drawings. The following description refers to the same or similar elements in the different figures unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present invention. Instead, they are merely examples of devices and methods consistent with aspects of the invention as detailed in the appended claims.

In the embodiment of the present application, for the convenience of description, the newly introduced protocol layer is called a Service Data Adaptation Protocol (SDAP) layer, where the SDAP layer is located on the upper layer of the PDCP layer, and is responsible for the upper layer. The QoS flow is mapped to a data bearer (DRB). The packet data unit (PDU) of the SDAP layer is the service data unit (SDU) of the PDCP layer. The protocol stack structure after adding the SDAP layer is as shown in Figure 1. Show.

The SDAP layer may include multiple PDU sessions, each PDU session corresponding to one SDAP entity, the SDAP entity refers to a logical body that processes the PDU session service, and one PDU session contains multiple QoS flows, and each QoS flow may be mapped to different DRB. The QoS flows of different PDU sessions cannot be mapped to the same DRB. The uplink SDAP needs to add a QoS flow ID to the uplink packet, so that the radio access network (RAN) can send the uplink packet to the corresponding core network (CN) QOS transmission channel. The downlink SDAP needs to add a QoS flow ID to the packet, so that for reflective QoS, the UE determines the DRB to which the uplink packet is mapped.

FIG. 2 is a flowchart of a data transmission method according to an exemplary embodiment of the present application. The embodiment is described from a receiving end. As shown in FIG. 2, the data transmission method includes:

In step S201, at least one data packet sent by the transmitting end is received in the reordering window, and each data packet in at least one data packet carries a sequence number (SN).

In this embodiment, the transmitting end sends at least one data packet to the receiving end, and the data packet may be a SDAP packet, where each data packet carries the SN. The receiving end may receive at least one data packet sent by the transmitting end in a pre-maintained reordering window.

For the uplink data, the transmitting end is the UE, and the receiving end is the base station. For the downlink data, the transmitting end is the base station, and the receiving end is the UE.

In step S202, if at least one data packet arriving in the SN order is received in the reordering window, the received data packet is parsed, and the parsed data portion is submitted to the upper layer.

If the receiving end receives at least one data packet that arrives in the SN order in the reordering window, the received data packet is parsed, and the parsed data portion is submitted to the upper layer.

For example, if the receiving end receives the data packet 0 and the data packet 1 in the SN order in the reordering window, the received data packet 0 and the data packet 1 may be parsed, and the parsed data portion is submitted to the upper layer. .

In step S203, if a data packet that is not in the SN order is received in the reordering window and the reordering timer is not currently started, the reordering timer is started, and the data packet triggering the reordering timer is triggered. The SN is set to the currently received SN of the data packet that is not in the SN order. If all the out-of-order packets before the SN that triggers the reordering timer are successfully received, the reordering timer is stopped and reset.

If the receiving end receives a data packet that does not arrive in the SN order in the reordering window and does not currently start the reordering timer, the reordering timer may be started to wait for the data packet in the SN order to arrive, if successfully received The allocating packets before the SN corresponding to the data packet that triggers the reordering timer are triggered, and the reordering timer is stopped and reset.

Continuing with the above example, for example, if the receiving end receives the data packet 3 that is not in the SN order within the reordering window and does not currently start the reordering timer, the reordering timer may be started to wait for the arrival of the data packet 2. If all the out-of-order packets before the packet 3 are received in the reordering window, that is, the packet 2, the reordering timer can be stopped and reset, and the packet 2 and the packet 3 are parsed in turn, and then up. The layer submits the parsed data portion.

In the above embodiment, when a packet that is not in the SN order is received in the reordering window and the reordering timer is not currently started, the reordering timer is started, waiting for the arrival of the data packet in the SN order, and At least one data packet received in the SN order received in the sorting window is parsed, and then the parsed data portion is submitted to the upper layer, thereby realizing the sequential transmission of data, thereby solving the data out of order of QoS flow in DRB remapping. Problems and avoiding extra delays.

FIG. 3 is a flowchart of another data transmission method according to an exemplary embodiment of the present application. As shown in FIG. 3, after the foregoing step S203, the method may further include:

In step S204, if there is still a data packet waiting to be received in the reordering window that is not in the SN order, the reordering timer is started again, and the SN corresponding to the data packet triggering the reordering timer is set to be currently waiting. The maximum SN of the received packet.

In this embodiment, if there are still packets waiting to be received in the reordering window that are not in the SN order, the reordering timer may be started again to wait for the packets arriving in the SN order, and the triggering reordering will be triggered. The SN corresponding to the timer packet is set to the maximum SN of the data packet currently waiting to be received.

Assuming that the receiving end has delivered the data part of the packet 0 to the data packet 3 to the upper layer, and there are the data packet 5 and the data packet 7 in the reordering window, there is still a non-in SN order waiting for reception in the reordering window. The incoming data packet is data packet 4, data packet 6 and data packet 8. At this time, the reordering timer can be started again, and the SN corresponding to the data packet triggering the reordering timer is set to the data packet currently waiting to be received. The maximum SN is set to 8 for the SN corresponding to the packet that triggers the start reordering timer. This is done to avoid frequent shutdown of the reordering timer, to reduce wasted resources on the receiving end, and after starting the reordering timer, all the packets that are waiting to be received in the non-SN order can be received in the reordering window.

In the above embodiment, when there are still packets waiting to be received in the reordering window that are not in the SN order, The reordering timer is started, and the SN corresponding to the data packet triggering the reordering timer is set to the maximum SN of the data packet currently waiting to be received, so as to avoid starting the shutdown reordering timer frequently, and reducing the waste of resources of the receiving end.

FIG. 4A is a flowchart of another data transmission method according to an exemplary embodiment of the present application. The embodiment is described from the receiving end. As shown in FIG. 4A, the data transmission method may include:

In step S401, it is determined that a reordering function is applied to the service quality stream corresponding to the data in the received data packet, and the reordering window is maintained.

Optionally, in this embodiment, when the receiving end determines that the data of a certain QoS flow received needs to apply the reordering function, then a reordering window is maintained.

When the receiving end is a UE, the reordering window size of the receiving end side may be configured by the base station to the UE through an Unlimited Resource Control (RRC) message.

In step S402, at least one data packet sent by the transmitting end is received in the reordering window, and each data packet in at least one data packet carries the SN.

In step S403, if at least one data packet arriving in the SN order is received in the reordering window, the received data packet is parsed, and the parsed data portion is submitted to the upper layer.

In step S404, if the SN of the received data packet corresponds to the lower boundary of the reordering window, the lower boundary of the reordering window is moved to the SN corresponding to the next data packet waiting to be received, and the reordering window is updated. boundary.

Alternatively, in this embodiment, the lower and upper boundaries of the reordering window may be updated based on the SN of the received data packet.

For example, when the lower boundary of the reordering window is 1, if the packet 1 is received, since the SN of the received packet corresponds to the lower boundary of the reordering window, the lower boundary of the reordering window can be moved to the next waiting. The SN corresponding to the received data packet moves the lower boundary of the reordering window to 2, and updates the upper boundary of the reordering window to: the lower boundary of the reordering window SN + reordering window size minus one.

In step S405, if a data packet that does not arrive in the SN order is received in the reordering window and the reordering timer is not currently started, the reordering timer is started, and the data packet triggering the reordering timer is triggered. The SN is set to the currently received SN of the data packet that is not in the SN order. If all the out-of-order packets before the SN that triggers the reordering timer are successfully received, the reordering timer is stopped and reset.

In step S406, if there is still a data packet waiting to be received in the reordering window that is not in the SN order, the reordering timer is started again, and the SN corresponding to the data packet triggering the reordering timer is set to be currently waiting. Receiving The maximum SN of the packet.

In the above embodiment, the reordering function is applied by determining the service quality flow corresponding to the data in the received data packet, and the reordering window is maintained, thereby providing conditions for subsequently receiving the data packet in the reordering window; When the SN of the data packet corresponds to the lower boundary of the reordering window, the lower boundary of the reordering window is moved to the SN corresponding to the next data packet waiting to be received, and the upper boundary of the reordering window is updated, thereby moving the reordering window by The upper and lower boundaries are used to receive packets of different SNs within the reordering window.

FIG. 4B is a flowchart of another data transmission method according to an exemplary embodiment of the present application. As shown in FIG. 4B, after step S406, the method may further include:

In step S407, whenever the SN of one data packet is received is greater than the maximum SN, if the SN of the currently received data packet is not in the reordering window, the currently received data packet is discarded, if the currently received data packet The SN is in the reordering window, and the maximum SN is updated to the SN of the currently received data packet.

In this embodiment, the receiving end can maintain the maximum SN by: whenever a packet of a larger SN is received, if the SN is not within the reordering window, the packet is discarded. If the SN is within the reordering window, the largest SN can be updated to the SN of the currently received data packet.

For example, the lower boundary of the reordering window is 3, the upper boundary is 8, and the current maximum SN is 3. If a packet of a larger SN is received when the packet 8 is received, since 8 is in the reordering window, Update the maximum SN to 8. If a packet 10 is received, that is, a packet of a larger SN is received, but since 10 is not in the reordering window, the packet is discarded.

In the above embodiment, whenever a data packet of a larger SN is received, if the SN of the currently received data packet is not in the reordering window, the currently received data packet is discarded, if the SN of the currently received data packet is In the reordering window, the maximum SN is updated to the SN of the currently received data packet, thereby achieving the purpose of maintaining the maximum SN.

FIG. 4C is a flowchart of another data transmission method according to an exemplary embodiment of the present application. As shown in FIG. 4C, before the step S401, the method may further include:

In step S400, the reordering function is enabled for the service quality stream before determining to apply the reordering function to the service quality stream corresponding to the data in the received data packet.

In this embodiment, when the receiving end is a UE, the reordering function can be enabled for the service quality flow by, but not limited to, the following manner:

The method 1) receives the configuration information sent by the base station, and starts a reordering function for the service quality flow according to the configuration information.

The method 2) receives the configuration information sent by the base station, and starts a reordering function on the data bearer (DRB) in the acknowledgement (AM) mode of the service quality flow mapping according to the configuration information.

The method 3) receives configuration information sent by the base station, and starts a reordering function on the DRB in the AM mode or the non-acknowledgment (UM) mode mapped to the service quality flow according to the configuration information.

Mode 4) The reordering function is always enabled for the service quality flow.

In addition, before the UE performs the reordering function on the service quality flow, the DRB remapping of the service quality flow may be determined according to the downlink data of the received service quality flow and the reflected service quality attribute opened for the service quality flow. The service quality flow identifier carried in the downlink data of the received service quality flow determines that the service quality flow is DRB remapping.

In this embodiment, when the receiving end is a base station, the reordering function can be enabled for the service quality flow by using, but not limited to, the following: after the UE performs the DRB remapping of the uplink data of the service quality flow, the service quality flow is started. Reordering feature.

In the above embodiment, the reordering function is enabled on the service quality flow, thereby providing conditions for subsequently applying the reordering function to the service quality flow.

FIG. 5 is a flowchart of still another data transmission method according to an exemplary embodiment of the present application. The embodiment is described from a sending end. As shown in FIG. 5, the data transmission method includes:

In step S501, it is determined that the service quality flow corresponding to the data in the data packet is DRB remapping.

In this embodiment, if the sending end is the UE, the DRB remapping may be determined by the service quality flow corresponding to the data in the data packet by, but not limited to, the following manner:

The method 1) receives configuration information sent by the base station, and determines, according to the configuration information, DRB remapping of the service quality flow corresponding to the data in the data packet. The configuration information is used to instruct the UE to perform DRB remapping on the uplink data of the service quality flow.

The configuration information may be carried in the RRC signaling.

Mode 2) If the service quality flow starts the reflected service quality attribute, if the UE receives the downlink data of the service quality flow on the DRB different from the downlink data of the previous service quality flow, the service corresponding to the data in the data packet may be determined. The quality flow occurs with DRB remapping.

In step S502, an SN is added to the packet header of the data packet, and the data packet carrying the SN is transmitted to the receiving end.

In this embodiment, by adding an SN in the packet header of the data packet and transmitting the data packet carrying the SN to the receiving end, The receiving end can parse at least one data packet that arrives in the SN order, and submit the parsed data portion to the upper layer, so that the receiving end can transmit the data in sequence, thereby solving the QoS flow in the DRB remapping for the receiving end. Time data out of order problems and avoiding additional delays provide conditions.

In this embodiment, after determining that the service quality flow corresponding to the data in the data packet is DRB remapping, the SN may be added in the packet header of the data packet, and the data packet carrying the SN may be sent to the receiving end.

In the above embodiment, the DRB remapping is performed by determining the service quality flow corresponding to the data in the data packet, and then the SN is added in the packet header of the data packet, and the data packet carrying the SN is sent to the receiving end, so that the receiving end can determine the data packet according to the SN. The transmission sequence provides conditions for sequentially transmitting data, thereby providing a condition for solving the data out-of-order problem of QoS flow in DRB remapping for low latency.

FIG. 6 is a block diagram of a data transmission apparatus according to an exemplary embodiment. As shown in FIG. 6, the data transmission apparatus includes: a receiving module 61, a parsing and submitting module 62, and a processing module 63.

The receiving module 61 is configured to receive at least one data packet sent by the transmitting end in the reordering window, each of the at least one data packet carrying the serial number SN.

The parsing and submitting module 62 is configured to parse the received data packet and submit the parsed data portion to the upper layer if the receiving module 61 receives at least one data packet arriving in the SN order within the reordering window.

The processing module 63 is configured to start the reordering timer if the receiving module 61 receives a non-SN-ordered data packet in the reordering window and does not currently start the reordering timer, and triggers the reordering timer to be triggered. The SN corresponding to the data packet is set to the currently received SN of the data packet that is not in the SN order. If all the out-of-order data packets before the SN that triggers the reordering timer are successfully received, the reordering is stopped and reset. Timer.

Continuing with the above example, for example, if the receiving end receives the data packet 3 that is not in the SN order within the reordering window and does not currently start the reordering timer, the reordering timer may be started to wait for the arrival of the data packet 2. If the packet 2 is received in the reordering window, the reordering timer can be stopped and reset, and the packet 2 and the packet 3 are parsed in turn, and then the parsed data portion is submitted to the upper layer.

FIG. 7A is a block diagram of another data transmission apparatus according to an exemplary embodiment. As shown in FIG. 7A, on the basis of the foregoing embodiment shown in FIG. 6, the apparatus may further include: a startup setting module 64.

The startup setting module 64 is configured to, after the processing module 63 stops and resets the reordering timer, if there are still packets waiting to be received in the reordering window that are not in the SN order, the reordering timer is started again, and The SN corresponding to the packet triggering the start reordering timer is set to the maximum SN of the data packet currently waiting to be received.

FIG. 7B is a block diagram of another data transmission apparatus according to an exemplary embodiment. As shown in FIG. 7B, on the basis of the foregoing embodiment shown in FIG. 7A, the apparatus may further include: a mobile update module 65.

The mobile update module 65 is configured to: if the SN of the data packet received by the receiving module 61 corresponds to the lower boundary of the reordering window, move the lower boundary of the reordering window to the SN corresponding to the next data packet waiting to be received, and update Reorder the upper boundary of the window.

In the above embodiment, when the SN of the received data packet corresponds to the lower boundary of the reordering window, the lower boundary of the reordering window is moved to the SN corresponding to the next data packet waiting to be received, and the reordering window is updated. The boundary, thereby implementing the reception of packets of different SNs within the reordering window by moving the upper and lower boundaries of the reordering window.

FIG. 7C is a block diagram of another data transmission apparatus according to an exemplary embodiment. As shown in FIG. 7C, on the basis of the embodiment shown in FIG. 7B, the apparatus may further include: a discarding update module 66.

The discard update module 66 is configured to discard the currently received packet if the SN of the currently received packet is not within the reordering window, whenever the SN of the received packet is greater than the maximum SN, if currently The SN of the received data packet is within the reordering window, and the maximum SN is updated to the SN of the currently received data packet.

FIG. 8A is a block diagram of another data transmission apparatus according to an exemplary embodiment. As shown in FIG. 8A, on the basis of the embodiment shown in FIG. 7C, the apparatus may further include: a determination maintenance module 67.

The determination maintenance module 67 is configured to determine that the reordering function is applied to the quality of service stream corresponding to the data in the received data packet and to maintain the reordering window before the parsing delivery module 62 parses the received data packet.

In the above embodiment, the reordering function is applied by determining the service quality flow corresponding to the data in the received data packet, and the reordering window is maintained, thereby providing conditions for subsequently receiving the data packet in the reordering window.

FIG. 8B is a block diagram of another data transmission apparatus according to an exemplary embodiment. As shown in FIG. 8B, on the basis of the embodiment shown in FIG. 8A, the apparatus may further include: an opening module 68.

The opening module 68 is configured to enable the reordering function for the traffic quality flow before determining that the maintenance module 67 determines to apply the reordering function to the traffic quality stream corresponding to the data in the received data packet.

FIG. 9A is a block diagram of another data transmission apparatus according to an exemplary embodiment. As shown in FIG. 9A, on the basis of the foregoing embodiment shown in FIG. 8B, if the receiving end is a UE, the opening module 68 may include : a first opening unit 681 or a second opening unit 682.

The first initiating unit 681 is configured to receive configuration information sent by the base station, and enable a reordering function for the service quality flow according to the configuration information, and enable a reordering function for the data bearer DRB in the confirmed AM mode of the service quality flow mapping, or The data bearer DRB in the AM mode or the non-acknowledged UM mode of the mass flow map starts the reordering function.

The second on unit 682 is configured to always turn on the reordering function for the traffic quality stream.

Mode 4) The reordering function is always enabled for the service quality flow.

In another embodiment, if the receiving end is a base station, the enabling module 68 can be configured to enable the reordering function for the service quality flow after the UE is configured to perform DRB remapping of the uplink data of the service quality flow.

In the foregoing embodiment, the reordering function can be enabled on the service quality flow in multiple manners, and the implementation manner is flexible and diverse.

FIG. 9B is a block diagram of another data transmission apparatus according to an exemplary embodiment. As shown in FIG. 9B, on the basis of the embodiment shown in FIG. 9A, the opening module 68 may further include: a first determining unit. 683 or second determining unit 684.

The first determining unit 683 is configured to determine the service quality flow according to the downlink data of the received service quality flow and the reflected service quality attribute opened for the service quality flow before the second opening unit 682 always enables the reordering function for the service quality flow. A DRB remapping occurs.

The second determining unit 684 is configured to determine the service quality flow occurrence DRB remapping according to the service quality flow identifier carried in the downlink data of the received service quality flow before the second opening unit 682 always enables the reordering function for the service quality flow.

In the foregoing embodiment, the DRB remapping of the service quality flow may be determined in multiple manners, and the implementation manner is flexible and diverse.

FIG. 10 is a block diagram of still another data transmission apparatus according to an exemplary embodiment. As shown in FIG. 10, the data transmission apparatus includes: a determination module 100 and an addition transmission module 110.

The determining module 100 is configured to determine that the traffic quality flow corresponding to the data in the data packet is DRB remapping.

The configuration information may be carried in the RRC signaling.

The add/transmit module 110 is configured to add a sequence number SN to the packet header of the data packet after the determining module 100 determines that the service quality stream corresponding to the data in the data packet is DRB remapping, and send the data packet carrying the SN to the receiving end.

In this embodiment, the SN is added to the packet header, and the data packet carrying the SN is sent to the receiving end, so that the receiving end can parse at least one data packet that arrives in the SN order, and submit the parsing to the upper layer. The data part, so that the receiving end can realize the transmission of data in order, thereby providing a condition for the receiving end to solve the data out-of-order problem of QoS flow in DRB remapping and avoiding additional delay.

FIG. 11A is a block diagram of another data transmission apparatus according to an exemplary embodiment. As shown in FIG. 11A, on the basis of the foregoing embodiment shown in FIG. 10, if the sending end is the user equipment UE, the determining module 100 is shown. The receiving unit 1001 and the first determining unit 1002 may be included.

The receiving unit 1001 is configured to receive configuration information sent by the base station, where the configuration information is used to instruct the UE to perform DRB remapping on the uplink data of the service quality flow.

The configuration information may be carried in the RRC signaling.

The first determining unit 1002 is configured to determine, according to the configuration information received by the receiving unit 1001, a DRB remapping of the quality of service flow corresponding to the data in the data packet.

In the foregoing embodiment, the configuration information sent by the base station is received, and the DRB remapping of the service quality flow corresponding to the data in the data packet is determined according to the configuration information, and the implementation manner is simple.

FIG. 11B is a block diagram of another data transmission apparatus according to an exemplary embodiment. As shown in FIG. 11B, on the basis of the foregoing embodiment shown in FIG. 10, if the sending end is the user equipment UE, the determining module 100 is shown. Can include: The second determining unit 1003.

The second determining unit 1003 is configured to: if the service quality flow starts to reflect the quality of service attribute, if the downlink data of the service quality stream is received on the DRB different from the downlink data of the previous service quality stream, the data in the data packet is determined. A DRB remapping occurs in the corresponding service quality flow.

In the above embodiment, after the service quality flow starts to reflect the service quality attribute, if the downlink data of the service quality flow is received on the DRB different from the downlink data of the previous service quality flow, the service quality corresponding to the data in the data packet is determined. The DRB remapping occurs in the stream, and the implementation is simple.

FIG. 12 is a block diagram of a data transmission apparatus suitable for use in accordance with an exemplary embodiment. For example, device 1200 can be a user device such as a mobile phone, computer, digital broadcast terminal, messaging device, game console, tablet device, medical device, fitness device, personal digital assistant, and the like. The data transmission device can be used as a receiving end or as a transmitting end.

Referring to FIG. 12, apparatus 1200 can include one or more of the following components: processing component 1202, memory 1204, power component 1206, multimedia component 1208, audio component 1210, input/output (I/O) interface 1212, sensor component 1214, And a communication component 1216.

Processing component 1202 typically controls the overall operation of device 1200, such as operations associated with display, telephone calls, data communications, camera operations, and recording operations. Processing component 1202 can include one or more processors 1220 to execute instructions to perform all or part of the steps of the above described methods. Moreover, processing component 1202 can include one or more modules to facilitate interaction between component 1202 and other components. For example, processing component 1202 can include a multimedia module to facilitate interaction between multimedia component 1208 and processing component 1202.

Memory 1204 is configured to store various types of data to support operation at device 1200. Examples of such data include instructions for any application or method operating on device 1200, contact data, phone book data, messages, pictures, videos, and the like. The memory 1204 can be implemented by any type of volatile or non-volatile storage device or a combination thereof, such as static random access memory (SRAM), electrically erasable programmable read only memory (EEPROM), erasable Programmable Read Only Memory (EPROM), Programmable Read Only Memory (PROM), Read Only Memory (ROM), Magnetic Memory, Flash Memory, Disk or Optical Disk.

Power component 1206 provides power to various components of device 1200. Power component 1206 can include a power management system, one or more power sources, and other components associated with generating, managing, and distributing power for device 1200.

The multimedia component 1208 includes a screen between the device 1200 and the user that provides an output interface. In some embodiments, the screen can include a liquid crystal display (LCD) and a touch panel (TP). If the screen includes a touch panel, the screen The screen can be implemented as a touch screen to receive input signals from the user. The touch panel includes one or more touch sensors to sense touches, slides, and gestures on the touch panel. The touch sensor can sense not only the boundaries of the touch or sliding action, but also the duration and pressure associated with the touch or slide operation. In some embodiments, the multimedia component 1208 includes a front camera and/or a rear camera. When the device 1200 is in an operation mode, such as a shooting mode or a video mode, the front camera and/or the rear camera can receive external multimedia data. Each front and rear camera can be a fixed optical lens system or have focal length and optical zoom capabilities.

The audio component 1210 is configured to output and/or input an audio signal. For example, audio component 1210 includes a microphone (MIC) that is configured to receive an external audio signal when device 1200 is in an operational mode, such as a call mode, a recording mode, and a voice recognition mode. The received audio signal may be further stored in memory 1204 or transmitted via communication component 1216. In some embodiments, audio component 1210 also includes a speaker for outputting an audio signal.

The I/O interface 1212 provides an interface between the processing component 1202 and the peripheral interface module, which may be a keyboard, a click wheel, a button, or the like. These buttons may include, but are not limited to, a home button, a volume button, a start button, and a lock button.

Sensor assembly 1214 includes one or more sensors for providing status assessment of various aspects to device 1200. For example, sensor component 1214 can detect an open/closed state of device 1200, a relative positioning of components, such as a display and a keypad of device 1200, and sensor component 1214 can also detect a change in position of a component of device 1200 or device 1200, the user The presence or absence of contact with device 1200, device 1200 orientation or acceleration/deceleration and temperature change of device 1200. Sensor assembly 1214 can include a proximity sensor configured to detect the presence of nearby objects without any physical contact. Sensor assembly 1214 may also include a light sensor, such as a CMOS or CCD image sensor, for use in imaging applications. In some embodiments, the sensor assembly 1214 can also include an acceleration sensor, a gyro sensor, a magnetic sensor, a pressure sensor, or a temperature sensor.

Communication component 1216 is configured to facilitate wired or wireless communication between device 1200 and other devices. The device 1200 can access a wireless network based on a communication standard, such as WiFi, 2G or 3G, or a combination thereof. In an exemplary embodiment, the communication component 1216 receives broadcast signals or broadcast associated information from an external broadcast management system via a broadcast channel. In an exemplary embodiment, communication component 1216 also includes a near field communication (NFC) module to facilitate short range communication. For example, the NFC module can be implemented based on radio frequency identification (RFID) technology, infrared data association (IrDA) technology, ultra-wideband (UWB) technology, Bluetooth (BT) technology, and other technologies.

In an exemplary embodiment, device 1200 may be implemented by one or more application specific integrated circuits (ASICs), digital signal processors (DSPs), digital signal processing devices (DSPDs), programmable logic devices (PLDs), field programmable A gate array (FPGA), controller, microcontroller, microprocessor, or other electronic component implementation for performing the above methods.

In an exemplary embodiment, there is also provided a non-transitory computer readable storage medium comprising instructions, such as a memory 1204 comprising instructions executable by processor 1220 of apparatus 1200 to perform the above method. For example, the non-transitory computer readable storage medium can be a ROM, a random access memory (RAM), a CD-ROM, a magnetic tape, a floppy disk, and an optical data storage device.

FIG. 13 is a block diagram of another suitable data transmission device, according to an exemplary embodiment. Apparatus 1300 can be provided as a base station. Referring to Figure 13, apparatus 1300 includes a processing component 1322, a wireless transmit/receive component 1324, an antenna component 1326, and a signal processing portion specific to the wireless interface. Processing component 1322 can further include one or more processors.

If the base station is a receiving end, one of the processing components 1322 can be configured to:

Receiving at least one data packet sent by the transmitting end in the reordering window, each data packet in at least one data packet carrying a serial number SN;

If at least one data packet arriving in the SN order is received in the reordering window, the received data packet is parsed, and the parsed data portion is submitted to the upper layer;

If a data packet that is not in the SN order is received in the reordering window and the reordering timer is not currently started, the reordering timer is started, and the SN setting corresponding to the data packet that starts the reordering timer is triggered. For the currently received SN of the data packet that is not in the SN order, if all the out-of-order packets before the SN that triggers the reordering timer are successfully received, the reordering timer is stopped and reset.

If the base station is a transmitting end, one of the processing components 1322 can be configured to:

A sequence number SN is added to the packet header, and a packet carrying the SN is sent to the receiving end.

For the device embodiment, since it basically corresponds to the method embodiment, reference may be made to the partial description of the method embodiment. The device embodiments described above are merely illustrative, wherein the units illustrated as separate components may or may not be physically separate, and the components displayed as units may or may not be physical units, ie may be located in one place. Or it can be distributed to multiple network elements. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of the embodiment. Those of ordinary skill in the art can understand and implement without any creative effort.

It should be noted that, in this context, relational terms such as first and second are used merely to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply such entities or operations. There is any between This actual relationship or order. The terms "comprising," "comprising," or "include" or "include" are intended to include a non-exclusive inclusion, such that a process, method, article, or device that includes a plurality of elements includes not only those elements but also other items not specifically listed Elements, or elements that are inherent to such a process, method, item, or device. An element that is defined by the phrase "comprising a ..." does not exclude the presence of additional equivalent elements in the process, method, item, or device that comprises the element.

Other embodiments of the present disclosure will be readily apparent to those skilled in the <RTIgt; The present application is intended to cover any variations, uses, or adaptations of the present disclosure, which are in accordance with the general principles of the disclosure and include common general knowledge or common technical means in the art that are not disclosed in the present disclosure. . The specification and examples are to be regarded as illustrative only,

It is to be understood that the invention is not limited to the details of the details and The scope of the disclosure is to be limited only by the appended claims.

Claims

A data transmission method is characterized in that it is applied to a receiving end, and the method includes:

Receiving at least one data packet sent by the transmitting end in the reordering window, each of the at least one data packet carrying a serial number SN;

If at least one data packet arriving in the SN order is received in the reordering window, parsing the received data packet, and submitting the parsed data portion to the upper layer;

If a data packet that does not arrive in the SN order is received in the reordering window and the reordering timer is not currently started, the reordering timer is started, and the data packet that starts the reordering timer is triggered. The corresponding SN is set to the currently received SN of the data packet that is not in the SN order, and if all the out-of-order data packets before the SN that triggers the reordering timer are successfully received, the weight is stopped and reset. Sort timer.
The method of claim 1 further comprising:

After the stopping and resetting the reordering timer, if there is still a data packet waiting to be received in the reordering window that is not in the SN order, the reordering timer is started again, and the triggering is started. The SN corresponding to the data packet of the reordering timer is set to the maximum SN of the data packet currently waiting to be received.
The method of claim 2, wherein the method further comprises:

If the SN of the received data packet corresponds to the lower boundary of the reordering window, move the lower boundary of the reordering window to the SN corresponding to the next data packet waiting to be received, and update the reordering window. Upper boundary.
The method of claim 3, wherein the method further comprises:

Whenever the SN of a received data packet is greater than the maximum SN, if the SN of the currently received data packet is not in the reordering window, the currently received data packet is discarded if the current received The SN of the data packet is within the reordering window, and the maximum SN is updated to the SN of the currently received data packet.
The method according to any one of claims 1 to 4, wherein the method further comprises:

Before the parsing of the received data packet, determining to apply a reordering function to the service quality flow corresponding to the data in the received data packet, and maintaining the reordering window.
The method of claim 5, wherein the method further comprises:

And before the determining to apply the reordering function to the service quality flow corresponding to the data in the received data packet, turning on the reordering function on the service quality flow.
The method according to claim 6, wherein if the receiving end is a user equipment UE, the performing the reordering function on the service quality stream comprises:

Receiving configuration information sent by the base station, and starting the reordering function on the service quality flow according to the configuration information, Performing the reordering function on the data bearer DRB in the acknowledged AM mode of the service quality flow mapping, or enabling the reordering function on the data bearer DRB in the AM mode or the unacknowledged UM mode of the service quality flow mapping ;or

The reordering function is always enabled for the service quality flow.
The method of claim 7, wherein the method further comprises:

Determining that the service quality flow occurs according to the received downlink data of the service quality flow and the reflected service quality attribute opened for the service quality flow, before the re-sorting function is enabled for the service quality flow. DRB remapping; or

Determining, by the received service quality flow identifier carried in the downlink data of the service quality flow, that the service quality flow is DRB remapping.
The method according to claim 6, wherein if the receiving end is a base station, the opening the reordering function for the service quality stream comprises:

After the UE is configured to perform DRB remapping on the uplink data of the service quality flow, the re-sorting function is enabled on the service quality flow.
A data transmission method, which is applied to a transmitting end, and the method includes:

Determining data bearer DRB remapping of the service quality flow corresponding to the data in the data packet;

A sequence number SN is added to the packet header of the data packet, and a data packet carrying the SN is sent to the receiving end.
The method according to claim 10, wherein if the transmitting end is a user equipment UE, the DRB remapping of the service quality stream corresponding to the data in the determining data packet comprises:

Receiving configuration information sent by the base station, where the configuration information is used to instruct the UE to perform DRB remapping on the uplink data of the service quality flow;

Determining, according to the configuration information, DRB remapping of the service quality flow corresponding to the data in the data packet.
The method according to claim 10, wherein if the transmitting end is a user equipment UE, the DRB remapping of the service quality stream corresponding to the data in the determining data packet comprises:

And if the service quality flow starts to reflect the service quality attribute, if the downlink data of the service quality flow is received on the DRB different from the previous downlink data that receives the service quality flow, determining the data in the data packet A DRB remapping occurs in the corresponding service quality flow.
A data transmission device is characterized in that it is applied to a receiving end, and the device comprises:

The receiving module is configured to receive at least one data packet sent by the sending end in the reordering window, each of the at least one data packet carrying a serial number SN;

The parsing module is configured to parse the received data packet and submit the parsed data to the upper layer if the receiving module receives at least one data packet that arrives in the SN order in the reordering window. section;

a processing module, configured to: if the receiving module receives a data packet that is not in the SN order in the reordering window and does not currently start a reordering timer, start the reordering timer, and trigger The SN corresponding to the data packet that starts the reordering timer is set to the currently received SN of the data packet that is not in the SN order, and all the out-of-order data before the SN that triggers the reordering timer is successfully received. The packet stops and resets the reordering timer.
The device according to claim 13, wherein the device further comprises:

Activating a setting module, configured to, after the processing module stops and reset the reordering timer, if the reordering window still has a data packet waiting to be received in a non-SN order, restarting the The reordering timer sets the SN corresponding to the data packet triggering the reordering timer to the maximum SN of the data packet currently waiting to be received.
The device according to claim 14, wherein the device further comprises:

a mobile update module, configured to: if a SN of the data packet received by the receiving module corresponds to a lower boundary of the reordering window, move a lower boundary of the reordering window to a next data packet waiting to be received SN and update the upper boundary of the reordering window.
The device according to claim 15, wherein the device further comprises:

And discarding the update module, configured to discard the current receiving if the SN of the currently received data packet is not in the reordering window whenever the SN of the receiving module receives a data packet is greater than the maximum SN And the data packet to which the maximum SN is updated to the SN of the currently received data packet if the SN of the currently received data packet is within the reordering window.
The device according to any one of claims 13 to 16, wherein the device further comprises:

Determining the maintenance module, configured to: before the parsing module parses the received data packet, determine to apply a reordering function to the service quality flow corresponding to the data in the received data packet, and maintain the reordering window.
The device according to claim 17, wherein the device further comprises:

And the opening module is configured to enable the reordering function on the service quality flow before the determining that the maintenance module determines to apply a reordering function to the service quality flow corresponding to the data in the received data packet.
The device according to claim 18, wherein if the receiving end is a user equipment UE, the opening module comprises:

The first opening unit is configured to receive the configuration information sent by the base station, and enable the reordering function on the service quality flow according to the configuration information, and map the data bearer DRB in the confirmed AM mode to the service quality flow mapping Open Deactivating the reordering function, or enabling the reordering function on the data bearer DRB in the AM mode or the unacknowledged UM mode of the service quality flow mapping; or

The second opening unit is configured to always enable the reordering function for the quality of service stream.
The device of claim 19, wherein the opening module further comprises:

a first determining unit, configured to: after the second initiating unit always enables the reordering function on the service quality flow, according to the received downlink data of the service quality flow and opened for the service quality flow Reflecting a service quality attribute, determining that the service quality flow has a DRB remapping; or

a second determining unit, configured to determine, according to the received service quality flow identifier carried in the downlink data of the service quality flow, before the second initiating unit always enables the reordering function on the service quality flow The DRB remapping occurs in the service quality flow.
The device according to claim 18, wherein if the receiving end is a base station, the opening module is configured to:

After the UE is configured to perform DRB remapping on the uplink data of the service quality flow, the re-sorting function is enabled on the service quality flow.
A data transmission device is characterized in that it is applied to a transmitting end, and the device includes:

a determining module configured to determine a data bearer DRB remapping of the service quality flow corresponding to the data in the data packet;

Adding a sending module, configured to add a sequence number SN to the packet header of the data packet after the determining module determines that the service quality stream corresponding to the data in the data packet is DRB remapping, and send the carrying SN to the receiving end data pack.
The device according to claim 22, wherein if the sending end is a user equipment UE, the determining module comprises:

The receiving unit is configured to receive configuration information sent by the base station, where the configuration information is used to instruct the UE to perform DRB remapping on the uplink data of the service quality flow;

The first determining unit is configured to determine, according to the configuration information received by the receiving unit, DRB remapping of the service quality flow corresponding to the data in the data packet.
The device according to claim 22, wherein if the sending end is a user equipment UE, the determining module comprises:

a second determining unit, configured to: if the service quality flow starts to reflect the quality of service attribute, if the downlink data of the service quality flow is received on the DRB different from the previous downlink data that receives the service quality flow, Then determining that the service quality flow corresponding to the data in the data packet is DRB remapping.
A receiving end device, comprising:

processor;

a memory for storing processor executable instructions;

Wherein the processor is configured to:

Receiving at least one data packet sent by the transmitting end in the reordering window, each of the at least one data packet carrying a serial number SN;

If at least one data packet arriving in the SN order is received in the reordering window, parsing the received data packet, and submitting the parsed data portion to the upper layer;

If a data packet that does not arrive in the SN order is received in the reordering window and the reordering timer is not currently started, the reordering timer is started, and the data packet that starts the reordering timer is triggered. The corresponding SN is set to the currently received SN of the data packet that is not in the SN order, and if all the out-of-order data packets before the SN that triggers the reordering timer are successfully received, the weight is stopped and reset. Sort timer.
A sender device, comprising:

processor;

a memory for storing processor executable instructions;

Wherein the processor is configured to:

Determining data bearer DRB remapping of the service quality flow corresponding to the data in the data packet;

A sequence number SN is added to the packet header of the data packet, and a data packet carrying the SN is sent to the receiving end.
A computer readable storage medium having stored thereon a computer program, characterized in that the program is executed by a processor to implement the steps of the data transmission method according to any one of claims 1 to 9.
A computer readable storage medium having stored thereon a computer program, characterized in that the program is executed by a processor to implement the steps of the data transmission method according to any one of claims 10 to 12.