WO2018232701A1

WO2018232701A1 - Data transmission method, device, user equipment and base station

Info

Publication number: WO2018232701A1
Application number: PCT/CN2017/089591
Authority: WO
Inventors: 江小威
Original assignee: 北京小米移动软件有限公司
Priority date: 2017-06-22
Filing date: 2017-06-22
Publication date: 2018-12-27
Also published as: CN109429555A; CN109429555B

Abstract

The present disclosure relates to a data transmission method, device, user equipment, and a base station. The data transmission method comprises the following steps: on the basis of two radio link layer control protocol RLC entities, respectively transmitting a PDCP packet and a PDCP replication packet of a target bearer enabling a replication function of the packet data convergence protocol PDCP packet using an RLC acknowledge mode; and after one RLC entity successfully transmits an RLC service data unit corresponding to the target bearer, indicating to the other RLC entity that the RLC service data unit has been successfully transmitted. The technical solution of the present disclosure can solve the following problems: in the technical solution of PDCP packet replication, when adopting RLCAM mode to transmit data, after one RLC entity successfully transmits one PDCP packet of a PDCP layer, another RLC entity may still retransmit the PDCP packet, causing the radio resources being wasted and the status of the two RLC entities transmitting the PDCP packet being not synchronous.

Description

Data transmission method, device, user equipment and base station

Technical field

The present disclosure relates to the field of communications technologies, and in particular, to a data transmission method, apparatus, user equipment, and base station.

Background technique

In the related art, in the research discussion of the fifth-generation mobile communication technology (5th Generation, 5G for short) project, in order to solve the data transmission reliability problem of the data/signaling packet, a user-packet data convergence protocol (Packet) is proposed. Data Convergence Protocol (PDCP) layer packet replication technology scheme, and in order to solve the problem that PDCP packets and PDCP replication packets are transmitted through two carriers in the bottom layer, it is proposed to map one PDCP layer to different logical channels through bearer separation scheme. Then, it is mapped to different physical carriers for transmission.

The replication scheme of the PDCP packet can be applied to a data bearer (Data Resource Bearer, DRB for short) and a Signal Resource Bearer (SRB), where the SRB adopts a radio link control acknowledgement mode. (Radio Link Control Acknowledge Mode, RLCAM for short) mode transmission, DRB can be sent in AM mode, Un-acknowledge Mode (UM) or Transparent Mode (TM), using RLCAM. When the mode is sent, when one RLC entity carrying the data successfully transmits one PDCP packet of the PDCP layer, another RLC entity carried by the data may still retransmit the PDCP packet, resulting in unnecessary waste of wireless resources and causing two The state of the transmitted PDCP packet of the RLC entity is not synchronized.

Summary of the invention

To overcome the problems in the related art, the embodiments of the present disclosure provide a data transmission method, apparatus, user equipment, and a base station, which are used to solve the problem that when an RLCAM mode is used to transmit data in a PDCP packet replication solution, when an RLC entity succeeds. After transmitting one PDCP packet of the PDCP layer, another RLC entity may still be retransmitting the PDCP packet.

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

Based on two radio link layer control protocol RLC entities, respectively, using RLC acknowledge mode to send open points The PDCP packet and the PDCP replication packet carried by the target of the PDCP packet replication function of the group data convergence protocol;

After an RLC entity successfully sends the RLC service data unit corresponding to the target bearer, it indicates to another RLC entity that the RLC service data unit has been successfully sent.

In an embodiment, the method further includes:

Receiving, by the base station, a radio resource control message that carries PDCP packet replication configuration information;

Determining, according to the PDCP packet replication configuration information, a target bearer of the PDCP packet replication function to be enabled;

When the network reaches the preset condition, the PDCP packet replication function of the target bearer is enabled.

In an embodiment, the indicating to the another RLC entity that the RLC service data unit has been successfully sent includes:

Sending, to the PDCP layer, the indication information indicating that the RLC service data unit has been successfully sent;

Controlling, by the PDCP layer, that the RLC service data unit of the another RLC entity has been successfully transmitted based on the indication information.

In an embodiment, indicating to the another RLC entity that the RLC service data unit has been successfully sent includes:

And transmitting, to the another RLC entity, indication information indicating that the RLC service data unit has been successfully transmitted.

In an embodiment, the method further includes:

Controlling, by the another RLC entity, after determining that the RLC service data unit has been successfully sent, determining a transmission status of the service data unit corresponding to the RLC service data unit;

A first preset operation is performed based on the transmission state.

In an embodiment, the performing the first preset operation based on the sending status includes:

When the sending status is that the service data unit has not been encapsulated into a protocol data unit, setting a sending status of the service data unit to be successfully sent; or

Delete the business data unit; or,

The service data unit is no longer sent.

And when the sending status is that the service data unit has sent at least one protocol data unit, setting a sending status of the sent at least one protocol data unit to a confirmation message that a successful transmission has been received; or

Deleting the at least one protocol data unit.

In an embodiment, performing the first preset operation further includes:

Move the lower boundary of the send window to the next protocol data unit to be acknowledged successfully sent.

In an embodiment, the method further includes:

After the first preset operation is performed, when the buffer status of the user equipment changes, a message carrying a buffer status report is sent to the base station.

In an embodiment, the cache status report includes cache status information of the logical channel group corresponding to the another RLC entity: or,

The cache status report includes cache status information of each of the logical channels.

In an embodiment, the method further includes:

Determining, by the one of the two RLC entities, that the number of times the RLC service data unit of the target bearer that is to enable the PDCP packet replication function exceeds the maximum number of retransmissions, determining the number of times the another RLC entity sends the RLC service data unit ;

If the number of times the another RLC entity sends the RLC service data unit exceeds the maximum number of retransmissions, it is determined that a radio link failure occurs.

In an embodiment, after determining the number of times that another RLC entity sends the RLC service data unit, the method further includes:

If the number of times the another RLC entity sends the RLC service data unit does not exceed the maximum number of retransmissions before the target bearer turns off the PDCP packet replication function, determining to send the RLC service data unit The RLC entity whose number exceeds the maximum number of retransmissions does not have a radio link failure.

If the target bearer turns off the PDCP packet replication function before the number of times the another RLC entity sends the RLC service data unit does not exceed the maximum number of retransmissions, it is determined that a radio link failure occurs;

If the RLC entity that triggers the failure of the radio link is served by the primary base station, determining that a radio link failure with the primary base station occurs, performing an RRC connection reestablishment operation;

If the RLC entity that triggers the failure of the radio link is served by the secondary base station, it is determined that the radio link failure with the secondary base station occurs, and a report message carrying the radio link failure report is sent to the primary base station.

In an embodiment, after determining that the wireless link failure occurs, the method further includes:

If at least one of the two RLC entities is served by the primary base station, determining that a radio link failure with the primary base station occurs, performing an RRC connection reestablishment operation;

If both the RLC entities are served by the secondary base station, it is determined that the wireless link failure with the secondary base station occurs, and a report message carrying the wireless link failure report is sent to the primary base station.

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

Receiving data of a target bearer that is sent by the user equipment to enable the PDCP packet replication function;

After an RLC entity successfully receives the RLC service data unit corresponding to the target bearer, it indicates to another RLC entity that the RLC service data unit has been successfully received.

In an embodiment, the method further includes:

Sending, to the user equipment, a radio resource control message carrying the PDCP packet replication configuration information, where the PDCP packet replication configuration information is used by the user equipment to determine a target bearer of the PDCP packet replication function to be enabled.

In an embodiment, indicating to the other RLC entity that the RLC service data unit has been successfully received comprises:

Sending, to the PDCP layer, the indication information indicating that the RLC service data unit has been successfully received;

Controlling, by the PDCP layer, that the RLC service data unit of the another RLC entity has been successfully received based on the indication information.

The indication information indicating that the RLC service data unit has been successfully received is sent to the another RLC entity.

In an embodiment, one RLC entity and the other RLC entity are located in one base station; or

The one RLC entity and the another RLC entity are located in a primary base station and a secondary base station, respectively.

In an embodiment, the method further includes:

Controlling, by the another RLC entity, after determining that the RLC service data unit has been successfully received, determining all protocol data units corresponding to the RLC service data unit;

Performing a second preset operation on all protocol data units corresponding to the RLC service data unit.

In an embodiment, performing the second preset operation comprises:

Setting a receiving state of all protocol data units corresponding to the RLC service data unit to have been successfully received; and,

All protocol data units corresponding to the RLC service data unit are deleted.

In an embodiment, the method further includes:

When all protocol data units of the RLC service data unit corresponding to the lower boundary of the receiving window have been correctly received, the lower boundary of the receiving window is moved to the next protocol data unit to be successfully transmitted.

In an embodiment, the method further includes:

Updating the logical channel group corresponding to the another RLC entity based on an original receiving state of all protocol data units corresponding to the RLC service data unit and a receiving state after performing the second preset operation Cache value.

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

The first sending module is configured to send, according to the two radio link layer control protocol RLC entities, the PDCP packet and the PDCP replication packet of the target bearer of the packet data aggregation protocol PDCP packet replication function by using the RLC acknowledge mode;

The first indication module is configured to: after one RLC entity successfully sends the RLC service data unit corresponding to the target bearer, indicate to another RLC entity that the RLC service data unit has been successfully sent.

In an embodiment, the apparatus further includes:

The first receiving module is configured to receive a radio resource control message that is sent by the base station and that carries the PDCP packet replication configuration information;

a first determining module, configured to determine, according to the PDCP packet replication configuration information, a target bearer that is to be enabled to perform the PDCP packet replication function;

The module is enabled to be configured to enable the PDCP packet replication function of the target bearer when the network reaches the preset condition.

In an embodiment, the first indication module comprises:

The first sending submodule is configured to send, to the PDCP layer, the indication information that the RLC service data unit has been successfully sent;

And a second sending submodule configured to control the PDCP layer to indicate, according to the indication information, that the RLC service data unit of the another RLC entity has been successfully sent.

In an embodiment, the first indication module comprises:

And a third sending submodule configured to send, to the another RLC entity, indication information indicating that the RLC service data unit has been successfully sent.

In an embodiment, the apparatus further includes:

a sending status determining module, configured to control the another RLC entity to determine a sending status of the service data unit corresponding to the RLC service data unit after receiving the indication that the RLC service data unit has been successfully sent;

The first execution module is configured to perform a first preset operation based on the sending status.

In an embodiment, the first execution module comprises:

a first setting submodule configured to: when the sending status is that the service data unit has not been encapsulated into a protocol data unit, set a sending status of the service data unit to be successfully sent; or

a first deletion submodule configured to delete the service data unit; or

The first reject submodule is configured to no longer send the service data unit.

In an embodiment, the first execution module comprises:

a second setting submodule configured to: when the sending status is that the service data unit has sent at least one protocol data unit, set a sending status of the sent at least one protocol data unit to have received a successful transmission Confirmation message; or,

And a second deletion submodule configured to delete the at least one protocol data unit.

In an embodiment, the first execution module further includes:

The first mobile submodule is configured to move the lower boundary of the transmit window to the next protocol data unit to be successfully transmitted for confirmation.

In an embodiment, the apparatus further includes:

The cache report module is configured to send a message carrying the cache status report to the base station when the buffer status of the user equipment changes after the first preset operation is performed.

In an embodiment, the apparatus further includes:

a second determining module, configured to: when one of the two RLC entities sends the number of RLC service data units of the target bearer that enables the PDCP packet replication function to exceed the maximum number of retransmissions, determine that another RLC entity sends The number of times of the RLC service data unit;

The third determining module is configured to determine that a radio link failure occurs if the number of times the another RLC entity sends the RLC service data unit exceeds the maximum number of retransmissions.

In an embodiment, the apparatus further includes:

a fourth determining module, configured to: if the number of times the another RLC entity sends the RLC service data unit does not exceed the maximum number of retransmissions before the target bearer turns off the PDCP packet replication function, determine The RLC entity that sends one RLC service data unit exceeds the maximum number of retransmissions does not have a radio link failure;

a fifth determining module, configured to determine that a wireless chain is determined if the target bearer disables the PDCP packet replication function before the number of times the another RLC entity sends the RLC service data unit does not exceed the maximum number of retransmissions Road failure

a first reconstruction module configured to: when the RLC entity that triggers the failure of the radio link is served by the primary base station, Determining that a radio link failure with the primary base station occurs, and performing an RRC connection reestablishment operation;

The first reporting module is configured to: if the RLC entity that triggers the failure of the radio link is served by the secondary base station, determine that a radio link failure occurs with the secondary base station, and send a radio link failure report to the primary base station. Report a message.

In an embodiment, the apparatus further includes:

a second re-establishment module, configured to: if at least one of the two RLC entities is served by the primary base station, determine that a radio link failure with the primary base station occurs, and perform an RRC connection reestablishment operation;

a second reporting module, configured to: if the two RLC entities are all served by the secondary base station, determine that a wireless link failure occurs with the secondary base station, and send a report carrying the wireless link failure report to the primary base station Message.

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

a second receiving module, configured to receive data of a target bearer that is sent by the user equipment to enable the PDCP packet replication function;

The second indication module is configured to: after one RLC entity successfully receives the RLC service data unit corresponding to the target bearer, indicate to another RLC entity that the RLC service data unit has been successfully received.

In an embodiment, the apparatus further includes:

The second sending module is configured to send, to the user equipment, a radio resource control message that carries the PDCP packet replication configuration information, where the PDCP packet replication configuration information is used by the user equipment to determine a target bearer of the PDCP packet replication function to be enabled. .

In an embodiment, the second indication module comprises:

a fourth sending submodule, configured to send, to the PDCP layer, the indication information that the RLC service data unit has been successfully received;

And a fifth sending submodule configured to control the PDCP layer to indicate, according to the indication information, that the RLC service data unit of the another RLC entity has been successfully received.

In an embodiment, the second indication module comprises:

And a sixth sending submodule configured to send, to the another RLC entity, indication information indicating that the RLC service data unit has been successfully received.

In an embodiment, the apparatus further includes:

a sixth determining module, configured to control the another RLC entity to determine, after receiving the indication that the RLC service data unit has been successfully received, all protocol data units corresponding to the RLC service data unit;

The second execution module is configured to perform a second preset operation on all protocol data units corresponding to the RLC service data unit.

In an embodiment, the second execution module comprises:

a third setting submodule configured to set a receiving state of all protocol data units corresponding to the RLC service data unit to be successfully received; and

And a third deletion submodule configured to delete all protocol data units corresponding to the RLC service data unit.

In an embodiment, the apparatus further includes:

And a mobile module configured to: when all protocol data units of the RLC service data unit corresponding to the lower boundary of the receiving window have been correctly received, move the lower boundary of the receiving window to the next protocol data unit to be successfully transmitted.

In an embodiment, the apparatus further includes:

a cache state update module, configured to update a logic corresponding to the another RLC entity based on an original receiving state of all protocol data units corresponding to the RLC service data unit and a receiving state after performing the second preset operation The cache value of the channel group.

According to a fifth aspect of the embodiments of the present disclosure, a user equipment is provided, including:

processor;

a memory for storing processor executable instructions;

Wherein the processor is configured to:

Transmitting a PDCP packet and a PDCP replication packet of a target bearer of the packet data aggregation protocol PDCP packet replication function by using an RLC acknowledgement mode, respectively, based on two radio link layer control protocol RLC entities;

According to a sixth aspect of the embodiments of the present disclosure, a base station 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 non-transitory computer readable storage medium having stored thereon computer instructions that, when executed by a processor, implement the following steps:

According to an eighth aspect of the embodiments of the present disclosure, there is provided a non-transitory computer readable storage medium having stored thereon computer instructions that, when executed by a processor, implement the following steps:

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

When the UE sends the PDCP packet and the PDCP replication packet of the target bearer of the PDCP packet replication function by using the RLC acknowledgment mode, the UE may indicate that another RLC entity successfully transmits the RLC service data unit corresponding to the target bearer. An RLC entity RLC service data unit has been successfully transmitted, thereby preventing one RLC entity from continuing to transmit corresponding service data units, reducing unnecessary waste of radio resources, and avoiding sending a target bearer in an RLC entity. The number of times of the RLC service data unit exceeds the maximum number of retransmissions, and the number of times the RLC service data unit carried by the other RLC entity does not exceed the maximum number of retransmissions causes data interruption and large signaling overhead caused by connection reestablishment. problem.

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

FIG. 1A is a flowchart of a data transmission method according to an exemplary embodiment.

FIG. 1B is a first application scenario diagram of a data transmission method according to an exemplary embodiment.

FIG. 1C is a second application scenario diagram of a data transmission method according to an exemplary embodiment.

FIG. 2 is a flowchart of another data transmission method according to an exemplary embodiment.

FIG. 3 is a flowchart of still another data transmission method according to an exemplary embodiment.

FIG. 4 is a flowchart of a data transmission method according to an exemplary embodiment.

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

FIG. 6 is a flowchart of still another data transmission method according to an exemplary embodiment.

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

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

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

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

FIG. 11 is a block diagram of a data transmission apparatus suitable for use in accordance with an exemplary embodiment.

FIG. 12 is a block diagram of a data transmission apparatus suitable for use in accordance with 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.

1A is a flowchart of a data transmission method according to an exemplary embodiment, FIG. 1B is a first application scenario diagram of a data transmission method according to an exemplary embodiment, and FIG. 1C is an exemplary implementation according to an exemplary implementation. An application scenario diagram 2 of a data transmission method is illustrated; the data transmission method can be applied to a UE, as shown in FIG. 1A, the data transmission method includes the following steps 101-102:

In step 101, based on the two radio link layer control protocol RLC entities, the PDCP packet and the PDCP replication packet of the target bearer that enables the PDCP packet replication function are respectively sent in the RLC acknowledge mode.

In an embodiment, the method for opening the PDCP replication function of the target bearer may be referred to the embodiment shown in FIG. 2, which is not described in detail herein.

In an embodiment, the target bearer PDCP packet and the PDCP replication packet may be sent to the same base station, as shown in FIG. 1B. In still another embodiment, the target bearer PDCP packet and the PDCP replication packet may be respectively sent to the primary base station and the secondary base station. Base station, see Figure 1C.

In step 102, after one RLC entity successfully sends the RLC service data unit corresponding to the target bearer, it indicates to the other RLC entity that the RLC service data unit has been successfully sent.

In an embodiment, the PDCP layer sends the PDCP packet and the PDCP replication packet to the two RLC entities, respectively. The RLC service data unit to be transmitted by the two RLC entities is obtained.

In an embodiment, after an RLC entity successfully sends the RLC service data unit corresponding to the target bearer, the PDCP layer may send indication information indicating that the RLC service data unit has been successfully sent, and control the PDCP layer to be based on the received indication information. Indicates that another RLC entity RLC service data unit has been successfully transmitted.

In an embodiment, after an RLC entity successfully sends the RLC service data unit corresponding to the target bearer, the indication information indicating that the RLC service data unit has been successfully sent may also be sent directly to another RLC entity.

In an exemplary scenario, as shown in FIG. 1B, the mobile network is a 5G network as an example. In the scenario shown in FIG. 1B, the base station 10 and the UE 20 are included, where the UE 20 receives the information sent by the base station 10. When the radio resource control message carrying the configuration information of the PDCP packet is copied, the target bearer of the PDCP packet replication function may be determined based on the PDCP packet replication information, and when the network reaches a preset condition, if the network signal is relatively poor, the target bearer is turned on. The PDCP packet replication function, in which the RLC service data unit is separately sent by the two RLC entities, when one RLC entity successfully transmits the RLC service data unit, indicating that another RLC service data unit has been successfully sent, thereby preventing another RLC entity from continuing to transmit. The RLC service data unit avoids unnecessary waste of radio resources on the basis of increasing the reliability of data/signal transmission.

In an exemplary scenario, as shown in FIG. 1C, the mobile network is a 5G network as an example. In the scenario shown in FIG. 1B, the primary base station 10, the secondary base station 30, and the UE 20 are included, where the UE 20 is enabled. After the PDCP packet replication function of the target bearer, the RLC service data unit may be sent to the primary base station 10 and the secondary base station 20 by the two RLC entities respectively. When one RLC entity successfully sends the RLC service data unit, the other RLC service data unit is indicated. Successfully transmitted, and thus avoiding another RLC entity to continue to send RLC service data units, and avoiding unnecessary waste of wireless resources on the basis of increasing the reliability of data/signal transmission.

In this embodiment, by using the foregoing steps 101-102, it is possible to prevent an RLC entity from continuing to send corresponding service data units, thereby reducing unnecessary waste of wireless resources.

In an embodiment, the data transmission method may further include:

Determining a target bearer of the PDCP packet replication function to be enabled based on the PDCP packet replication configuration information;

In this embodiment, by setting the PDCP packet replication configuration information in the RRC message, the base station can determine the target bearer that needs to enable the PDCP packet replication function based on the quality of service of each bearer, thereby implementing the user equipment in the network. When the status is not ideal, the transmission of data carried by the target with high quality of service can be improved. Rely on sex.

In an embodiment, indicating to another RLC entity that the RLC service data unit has been successfully transmitted includes:

And transmitting, to the PDCP layer, indication information indicating that the RLC service data unit has been successfully sent;

The control PDCP layer indicates that another RLC entity RLC service data unit has been successfully transmitted based on the indication information.

In this embodiment, an indication manner is provided for one RLC entity to indicate to another RLC entity that the RLC service data unit has been successfully sent, which improves the flexibility of implementing the technical solution of the present application.

The indication information indicating that the RLC service data unit has been successfully transmitted is sent to another RLC entity.

In this embodiment, another indication manner is provided for one RLC entity to indicate that the RLC service data unit has been successfully sent to another RLC entity, which improves the flexibility of implementing the technical solution of the present application.

In an embodiment, the data transmission method may further include:

Controlling, by another RLC entity, after determining that the RLC service data unit has been successfully sent, determining a transmission status of the service data unit corresponding to the RLC service data unit;

The first preset operation is performed based on the transmission status.

In this embodiment, after another RLC entity receives an indication that the RLC service data unit has been successfully sent, the corresponding service data unit is processed according to the transmission state of the service data unit, thereby ensuring different The sending status can implement that no corresponding service data unit is sent in another RLC entity.

In an embodiment, the first preset operation is performed based on the sending status, including:

When the sending status is that the service data unit has not been encapsulated as a protocol data unit, the sending status of the service data unit is set to be successfully sent; or

Delete the business data unit; or,

The business data unit is no longer sent.

In this embodiment, when the sending status is that the service data unit has not been encapsulated into the protocol data unit, the sending status is set to be successfully sent, or the service data unit is deleted, or the service data unit is no longer sent. The way to process the business data unit improves the flexibility of implementing the technical solution of the present application.

When the sending status is that the service data unit has sent at least one protocol data unit, setting the sending status of the at least one protocol data unit that has been sent to the acknowledgement message that the successful transmission has been received; or

Delete at least one protocol data unit.

In this embodiment, when the sending status is that at least one protocol data unit has been sent, by setting the sending status of the transmitted protocol data unit to the acknowledgement message that the successful transmission has been received, or deleting the service data unit, etc. The way to process the protocol data unit improves the flexibility of implementing the technical solution of the present application.

In an embodiment, performing the first preset operation further includes:

In this embodiment, for the transmission state in which at least one protocol data unit has been transmitted, in addition to deleting the protocol data unit that has been successfully transmitted, it is necessary to move the lower boundary of the transmission window to the next protocol data unit to be successfully confirmed, thereby Implementing another RLC entity can continue to send PDCP packets normally.

In an embodiment, the data transmission method may further include:

After the first preset operation is performed, when the buffer status of the user equipment changes, the message carrying the buffer status report is sent to the base station.

In this embodiment, when the buffer status of the user equipment is changed, the buffer status report is reported in time, so that the base station side can obtain the cache amount of the service data of the user equipment side in time, thereby ensuring that the configuration of the radio link resource can be updated.

In an embodiment, the cache status report includes cache status information of the logical channel group corresponding to another RLC entity: or,

The cache status report includes cache status information for each logical channel.

In this embodiment, it is disclosed that the buffer status information is carried in the buffer status report, such as the buffer status information of each logical channel or the cache status information of the logical channel group corresponding to another RLC entity. The configuration of the radio link resources can be updated.

In an embodiment, the data transmission method may further include:

Determining, by the one of the two RLC entities, that the number of times of the RLC service data unit of the target bearer that is to enable the PDCP packet replication function exceeds the maximum number of retransmissions, determining the number of times the RLC service data unit is sent by another RLC entity;

If the number of times the RLC service data unit is sent by another RLC entity exceeds the maximum number of retransmissions, it is determined that the radio link failure has occurred.

In this embodiment, by determining that the number of retransmissions exceeds the maximum number of times in one RLC entity, another The number of retransmissions of the RLC entities, and then the radio link failure is determined to occur when the number of retransmissions of the other RLC entity exceeds the maximum number of times, and the connection reconnection is triggered when the number of retransmissions of an RLC entity exceeds the maximum number of times. The resulting problem of data terminals and large signaling overhead.

If the number of times that another RLC entity sends the RLC service data unit does not exceed the maximum number of retransmissions before the target bearer turns off the PDCP packet replication function, it is determined that the RLC entity that sends one RLC service data unit exceeds the maximum number of retransmissions does not generate wireless. Link failed;

If the target bearer disables the PDCP packet replication function before the number of times the RLC service data unit is sent by the other RLC entity does not exceed the maximum number of retransmissions, it is determined that the radio link failure occurs;

In this embodiment, after determining that the number of times the number of transmissions of one RLC entity exceeds the maximum number of retransmissions, and the event that the PDCP packet replication function is disabled before the number of times of transmission of another RLC entity exceeds the maximum number of retransmissions, it is determined that an RLC entity generates a link. If the failure occurs, the corresponding processing can be performed on the radio link failure in time, and by determining which base station the RLC entity that the radio link fails to provide service, the corresponding processing of the radio link failure can be performed in a targeted manner.

If both RLC entities are served by the secondary base station, it is determined that the wireless link failure with the secondary base station occurs, and a report message carrying the wireless link failure report is sent to the primary base station.

In this embodiment, when the number of retransmissions of another RLC entity exceeds the maximum number of retransmissions, the type of the radio link failure is determined based on the base station serving the two RLC entities, thereby specifically targeting the wireless chain. The road fails to perform the corresponding processing. For example, when the primary base station radio link fails, the connection re-establishment operation is performed, and when the secondary base station radio link fails, the report report of the radio link failure report is reported, thereby realizing an effective radio link. Failure processing.

For details on how to perform data transmission, please refer to the subsequent embodiments.

So far, the foregoing method provided by the embodiment of the present disclosure can thereby prevent an RLC entity from continuing to send The corresponding service data unit reduces unnecessary waste of radio resources. In addition, it is also avoided that the number of times the RLC service data unit of one target bearer is transmitted by one RLC entity exceeds the maximum number of retransmissions, and the other RLC entity sends the target bearer. The number of RLC service data units does not exceed the maximum number of retransmissions, causing data interruption and large signaling overhead caused by connection reestablishment.

The technical solutions provided by the embodiments of the present disclosure are described below by using specific embodiments.

FIG. 2 is a flowchart of another data transmission method according to an exemplary embodiment of the present disclosure. This embodiment uses the foregoing method provided by the embodiment of the present disclosure to perform an example of data transmission by a UE, as shown in FIG. 2 . , including the following steps:

In step 201, the radio resource control message that carries the PDCP packet replication configuration information sent by the base station is received.

In an embodiment, the base station may carry the PDCP packet replication configuration information in the RRC message, such as the connection reconfiguration message, and configure one or some data bearer/signal bearer bearer packet replication function of the user equipment, and configure Both RLC entities carrying these data bearer/signaling signals use RLCAM mode to transmit data.

In an embodiment, the PDCP packet replication information may be carried in a Control Element (referred to as CE) of a Medium Access Control (MAC) PDU.

In step 202, based on the PDCP packet replication configuration information, the target bearer of the PDCP packet replication function to be started is determined.

In an embodiment, the user equipment may parse the PDCP packet replication configuration information to determine a target bearer for which the PDCP packet replication function is to be enabled.

In step 203, when the network reaches the preset condition, the PDCP packet replication function of the target bearer is turned on.

In an embodiment, after determining, by the PDCP packet replication configuration information, the user equipment determines that the target bearer of the PDCP packet replication function is to be enabled, the network signal strength may continue to be detected, and when the network signal strength is less than the preset strength threshold, the target bearer is started. The PDCP packet replication function is capable of improving the transmission reliability of data carried by the target.

In step 204, based on the two radio link layer control protocol RLC entities, the PDCP packet and the PDCP replication packet of the target bearer that enables the PDCP packet replication function are respectively sent in the RLC acknowledge mode.

In step 205, after one RLC entity successfully sends the RLC service data unit corresponding to the target bearer, it indicates to the other RLC entity that the RLC service data unit has been successfully transmitted.

In an embodiment, the description of step 204 and step 205 can be referred to the description of step 101 and step 102 of the embodiment shown in FIG. 1A, and will not be described in detail herein.

In step 206, another RLC entity is controlled to receive the RLC service data unit successfully. After the sent instruction, the transmission status of the service data unit corresponding to the RLC service data unit is determined.

In an embodiment, the sending status may be that the RLC service data unit is not yet encapsulated into a protocol data unit, and the RLC sequence number is not associated; in yet another embodiment, the sending status may be that the RLC service data unit has been partitioned and encapsulated. Protocol data unit, and at least one protocol data unit has been sent out.

In an embodiment, the transmission status of the RLCSDU (or SDU segment) and/or RLC PDUs (one RLCSDU may be partitioned and encapsulated into multiple RLC PDUs) of the corresponding RLC service data unit may be found based on the RLC sequence number.

In step 207, a first preset operation is performed based on the transmission status.

In an embodiment, when the sending status is that the service data unit has not been encapsulated into the protocol data unit, the sending status of the service data unit is set to be successfully sent; or the service data unit is deleted; or the service is no longer sent. Data unit.

In an embodiment, when the sending status is that the service data unit has sent at least one protocol data unit, the sending status of the sent at least one protocol data unit is set to a confirmation message that the successful transmission has been received; or, at least A protocol data unit, and when the RLC PDU corresponding to the lower boundary of the transmission window has been successfully transmitted, the lower boundary of the transmission window is moved to the next RLC PDU to be successfully transmitted.

In step 208, when the buffer status of the user equipment changes, a message carrying the buffer status report is sent to the base station.

In an embodiment, when the user equipment successfully sends the RLC service data unit in one RLC entity, causing another RLC entity to no longer send data corresponding to the RLC service data unit, the buffer status of the user equipment may be changed. Triggers the user device to report the cache status report.

In an embodiment, the cache status report includes cache status information of the logical channel group corresponding to another RLC entity: or the cache status report includes cache status information for each logical channel.

In this embodiment, when the user equipment successfully sends the RLC service data unit in one RLC entity, causing another RLC entity to no longer send data corresponding to the RLC service data unit, causing a sudden change in the cache of the user equipment, the buffer status report may be reported to Update the cache status of user devices in a timely manner.

FIG. 3 is a flowchart of still another data transmission method according to an exemplary embodiment. The foregoing method uses the foregoing method provided by the embodiment of the present disclosure to enable a target bearer that enables the PDCP packet replication function based on two RLC entity transmissions. For example, how to determine the failure of the wireless link is taken as an example. As shown in Figure 3, the following steps are included:

In step 301, based on the two RLC entities, the PDCP packet and the PDCP replication packet of the target bearer that enables the PDCP packet replication function are respectively sent in the RLC acknowledge mode.

In step 302, when one of the two RLC entities sends an RLC service data unit of the target bearer that has the PDCP packet replication function enabled, the number of times of the RLC service data unit exceeds the maximum number of retransmissions, determining that another RLC entity sends the RLC service data unit. For the number of times, step 303, step 304, and step 305 are performed.

In an embodiment, the maximum number of retransmissions may be a predetermined number of times of the system. Generally, when the number of times the RLC entity sends data exceeds the maximum number of retransmissions, the data transmission failure of the RLC entity may be determined.

In step 303, if the number of times the RLC service data unit is sent by another RLC entity exceeds the maximum number of retransmissions, it is determined that a radio link failure occurs, and the process ends.

In an embodiment, if at least one of the two RLC entities is served by the primary base station, determining that a radio link failure with the primary base station occurs, performing an RRC connection reestablishment operation; if both RLC entities are configured by the secondary base station When the service is provided, it is determined that the radio link failure occurs with the secondary base station, and the report message carrying the radio link failure report is sent to the primary base station.

In step 304, if the number of times the RLC service data unit is sent by another RLC entity does not exceed the maximum number of retransmissions before the target bearer turns off the PDCP packet replication function, it is determined that the number of times the RLC service data unit is sent exceeds the maximum number of retransmissions. The radio link failed on the RLC entity and the process ends.

In an embodiment, when two RLC entities respectively send a PDCP packet and a PDCP replication packet that enable the PDCP packet replication function, if one RLC entity does not exceed the maximum number of retransmissions, it may be determined that neither of the two RLC entities have A radio link failed.

In step 305, if the target bearer turns off the PDCP packet replication function before the number of times the RLC service data unit is sent by the other RLC entity does not exceed the maximum number of retransmissions, it is determined that the radio link failure occurs, and steps 306 and 307 are performed.

In step 306, if the RLC entity that triggers the failure of the radio link is served by the primary base station, it is determined that the radio link failure with the primary base station occurs, and the RRC connection reestablishment operation is performed.

In step 307, if the RLC entity that triggers the failure of the radio link is served by the secondary base station, it is determined that the radio link failure with the secondary base station occurs, and a report message carrying the radio link failure report is sent to the primary base station.

In this embodiment, the number of times that one RLC service data unit is transmitted by one RLC entity exceeds the maximum number of retransmissions, and the number of times that another RLC entity sends the RLC service data unit carried by the target does not exceed When the maximum number of retransmissions is performed, an operation of determining a failure of the radio link is performed, resulting in data interruption caused by connection reestablishment and a large signaling overhead problem.

FIG. 4 is a flowchart of a data transmission method, which may be applied to a base station, which may be a base station in the application scenario shown in FIG. 1B, or may be in FIG. 1C, according to an exemplary embodiment. The primary base station or the secondary base station in the application scenario is shown in FIG. 4, and the data transmission method includes the following steps. 401-402:

In step 401, the data of the target bearer that is enabled by the user equipment to enable the PDCP packet replication function is received.

In an embodiment, for the target bearer that enables the PCDP packet replication function, the user equipment may separately send data of the target bearer through two RLC entities.

In an embodiment, referring to FIG. 1B, the base station may separately receive data sent by the user equipment based on two RLC entities by using two RLC entities; in an embodiment, referring to FIG. 1C, the RLC entity and the secondary base station in the primary base station The RLC entity may separately receive data transmitted by the user equipment based on two RLC entities.

In step 402, after one RLC entity successfully receives the RLC service data unit corresponding to the target bearer, it indicates to the other RLC entity that the RLC service data unit has been successfully received.

In an embodiment, after one of the RLC entities successfully receives all the fragments of the RLCSDU corresponding to the target bearer, the received RLCSDU fragments are assembled into RLCSDU and sent to the PDCP layer.

In an embodiment, after an RLC entity successfully receives the RLC service data unit corresponding to the target bearer, the PDCP layer may send indication information indicating that the RLC service data unit has been successfully received, and control the PDCP layer to indicate another RLC based on the indication information. The entity RLC service data unit has been successfully received. In another embodiment, after an RLC entity successfully receives the RLC service data unit corresponding to the target bearer, the RLC service data unit may be directly sent to another RLC entity to indicate that the RLC service data unit has been successfully received. Instructions.

In an embodiment, one RLC entity and another RLC entity are located in one base station; or one RLC entity and another RLC entity are located in the primary base station and the secondary base station, respectively.

In an exemplary scenario, as shown in FIG. 1B, the mobile network is a 5G network as an example. In the scenario shown in FIG. 1B, the base station 10 and the UE 20 are included, where the UE 20 receives the information sent by the base station 10. When the RRC packet carrying the configuration information of the PDCP packet is copied, the target bearer of the PDCP packet replication function is determined based on the PDCP packet replication information, and after the PDCP packet replication function of the target bearer is enabled, the two RLC entities respectively send the packet. The RLC service data unit, when one RLC entity of the base station 20 successfully receives the RLC service data unit, indicates that another RLC service data unit has been successfully received, thereby preventing another RLC entity from continuing to listen to the RLC service data unit, increasing data/signaling On the basis of the reliability of transmission, try to avoid causing unnecessary waste of wireless resources.

In an exemplary scenario, as shown in FIG. 1C, the mobile network is a 5G network as an example. In the scenario shown in FIG. 1B, the primary base station 10, the secondary base station 30, and the UE 20 are included, where the UE 20 is enabled. After the PDCP packet replication function of the target bearer, the RLC service data unit may be sent to the primary base station 10 and the secondary base station 20 by the two RLC entities respectively. When the RLC entity in the primary base station or the secondary base station successfully receives the RLC service data unit, the other An RLC service data unit has been successfully received, thereby preventing another RLC entity from continuing to receive The RLC service data unit is received to avoid unnecessary waste of wireless resources on the basis of increasing the reliability of data/signal transmission.

In this embodiment, when the UE sends the PDCP packet and the PDCP replication packet of the target bearer of the PDCP packet replication function based on the two RLC entities, the receiving end can successfully receive the RLC corresponding to the target bearer in one RLC entity. When the service data unit indicates that another RLC entity RLC service data unit has been successfully received, it is possible to prevent one RLC entity from continuing to receive the corresponding service data unit, thereby reducing unnecessary waste of radio resources.

In an embodiment, the data transmission method may further include:

The RRC message carrying the PDCP packet replication configuration information is sent to the user equipment, and the PDCP packet replication configuration information is used by the user equipment to determine the target bearer of the PDCP packet replication function to be enabled.

In this embodiment, by setting the PDCP packet replication configuration information in the RRC message, the base station can determine the target bearer that needs to enable the PDCP packet replication function based on the quality of service of each bearer, thereby implementing the user equipment in the network. When the status is not ideal, the transmission reliability of data carried by the target with high quality of service is improved.

In an embodiment, indicating to another RLC entity that the RLC service data unit has been successfully received comprises:

And transmitting, to the PDCP layer, indication information indicating that the RLC service data unit has been successfully received;

The control PDCP layer indicates that another RLC entity RLC service data unit has been successfully received based on the indication information.

In this embodiment, an indication manner is provided for one RLC entity to indicate to another RLC entity that the RLC service data unit has been successfully received, which improves the flexibility of implementing the technical solution of the present application.

The indication information indicating that the RLC service data unit has been successfully received is sent to another RLC entity.

In this embodiment, another indication manner is provided for one RLC entity to indicate to another RLC entity that the RLC service data unit has been successfully received, which improves the flexibility of implementing the technical solution of the present application.

In an embodiment, one RLC entity and another RLC entity are located in one base station; or

One RLC entity and another RLC entity are located in the primary base station and the secondary base station, respectively.

In this embodiment, it is indicated that two RLC entities may be located in the same base station, or may be located in the primary base station and the secondary base station, respectively. Increased flexibility in implementation.

In an embodiment, the data transmission method may further include:

Controlling, by the other RLC entity, after determining that the RLC service data unit has been successfully received, determining all protocol data units corresponding to the RLC service data unit;

In this embodiment, after another RLC entity receives the indication that the RLC service data unit has been successfully received, all the protocol data units may be determined first, and then the second preset operation is performed on all the protocol data units in a more targeted manner. .

In an embodiment, performing the second preset operation comprises:

Setting the receiving status of all protocol data units corresponding to the RLC service data unit to have been successfully received; and,

All protocol data units corresponding to the RLC service data unit are deleted.

In this embodiment, after another RLC entity receives an indication that the RLC service data unit has been successfully received, the reception status of all protocol data units can be set to have been successfully received, and all protocol data units that have been successfully received are deleted. Optimized resources and achieved better implementation results.

In an embodiment, the data transmission method may further include:

In this embodiment, by moving the lower boundary of the receiving window to the next protocol data unit to be successfully received, thereby realizing another RLC entity can continue to receive the PDCP packet normally. Optimized resources and achieved better implementation results.

In an embodiment, the data transmission method may further include:

The cache value of the logical channel group corresponding to another RLC entity is updated based on the original reception status of all protocol data units corresponding to the RLC service data unit and the reception status after performing the second preset operation.

In this embodiment, when the cache state of the logical channel group of another RLC entity is changed, the cache value of the corresponding logical channel group is updated in time, thereby ensuring the accuracy of the cached amount of the service data to be processed, thereby ensuring timely Adjust the configuration of the radio link resources.

FIG. 5 is a flowchart of still another data transmission method according to an exemplary embodiment. This embodiment uses the foregoing method provided by the embodiment of the present disclosure to illustrate an example of how a base station performs data transmission, as shown in FIG. 5 . The indication includes the following steps:

In step 501, the radio resource control packet carrying the PDCP packet replication configuration information is sent to the user equipment. The PDCP packet replication configuration information is used by the user equipment to determine the target bearer of the PDCP packet replication function to be enabled.

In an embodiment, the base station may carry the PDCP packet replication information in the MAC CE in the RRC message.

In step 502, the data of the target bearer of the PDCP packet replication function sent by the user equipment is received.

In an embodiment, after determining, by the PDCP packet replication configuration information, the user equipment determines that the target bearer of the PDCP packet replication function is to be enabled, the network signal strength may continue to be detected, and when the network signal strength is less than the preset strength threshold, the target bearer is started. PDCP packet replication function.

In step 503, after one RLC entity successfully receives the RLC service data unit corresponding to the target bearer, it indicates to the other RLC entity that the RLC service data unit has been successfully received.

In an embodiment, the description of step 503 can be referred to step 402 of the embodiment shown in FIG. 4, which will not be described in detail herein.

In step 504, another RLC entity is controlled to determine all protocol data units corresponding to the RLC service data unit after receiving the indication that the RLC service data unit has been successfully received.

In an embodiment, all protocol data units corresponding to the RLC service data unit may be determined based on the RLC sequence number of the protocol data unit.

In step 505, a second preset operation is performed on all protocol data units corresponding to the RLC service data unit.

In an embodiment, the receiving status of all protocol data units corresponding to the RLC service data unit is set to have been successfully received; and all protocol data units corresponding to the RLC service data unit are deleted.

In an embodiment, when all protocol data units of the RLC service data unit corresponding to the lower boundary of the receiving window have been correctly received, the lower boundary of the receiving window is moved to the next protocol data unit to be successfully transmitted. Since the receiving state of the RLC service data unit has been set to be successfully received, if the protocol data unit corresponding to the RLC sequence number corresponding to the lower boundary of the receiving window has been correctly received, the lower boundary of the receiving window can be moved to the next to be successfully confirmed. The protocol data unit that was sent.

In this embodiment, when the UE sends the PDCP packet and the PDCP replication packet of the target bearer of the PDCP packet replication function based on the two RLC entities, the receiving end can successfully receive the RLC corresponding to the target bearer in one RLC entity. When the service data unit indicates that another RLC entity RLC service data unit has been successfully received, thereby avoiding having one RLC entity continue to receive the corresponding service data unit, reducing Unnecessary waste of wireless resources.

FIG. 6 is a flowchart of still another data transmission method according to an exemplary embodiment. This embodiment uses the foregoing method provided by the embodiment of the present disclosure to illustrate an example of how a base station performs data transmission, as shown in FIG. 6. The indication includes the following steps:

In step 601, an original receiving state of all protocol data units corresponding to the RLC service data unit and a receiving state after performing the second preset operation are determined.

In an embodiment, the original receiving state of all protocol data units corresponding to the RLC service data unit can be understood as the receiving state of another RLC entity for the RLC service data unit when one RLC entity successfully receives the RLC service data unit, such as The receiving state may be that any corresponding protocol data unit has not been received, or part of the protocol data unit is received.

In an embodiment, the receiving state when the second preset operation is performed is that the RLC service data unit has been correctly received.

In step 602, the cache value of the logical channel group corresponding to another RLC entity is updated.

In an embodiment, the original receiving state of the protocol data unit corresponding to the RLC service data unit may be set to successfully receive the data packet of size S2, and the value of S2 may be 0, but the size does not exceed the total of the RLC service data unit. The packet size S1 is assumed to be S, and the cache value of the updated logical channel group is S+S2-S1.

In this embodiment, when the RLC service data unit is successfully received by one RLC entity, causing a sudden change in the cache of the logical channel group corresponding to another RLC entity, the cache value of the logical channel group may be updated.

FIG. 7 is a block diagram of a data transmission apparatus according to an exemplary embodiment, applied to a user equipment. As shown in FIG. 7, the data transmission apparatus includes:

The first sending module 71 is configured to send, according to the two radio link layer control protocol RLC entities, the PDCP packet and the PDCP replication packet of the target bearer of the packet data aggregation protocol PDCP packet replication function by using the RLC acknowledge mode;

The first indication module 72 is configured to: after one RLC entity successfully sends the RLC service data unit corresponding to the target bearer, indicate to another RLC entity that the RLC service data unit has been successfully sent.

This embodiment can prevent another RLC entity from continuing to send corresponding service data units, thereby reducing unnecessary waste of radio resources.

FIG. 8 is a block diagram of another data transmission apparatus according to an exemplary embodiment. As shown in FIG. 8, on the basis of the foregoing embodiment shown in FIG. 8, in an embodiment, the apparatus further includes:

The first receiving module 73 is configured to receive the wireless information that is sent by the base station and carries the PDCP packet replication configuration information. Resource control message;

The first determining module 74 is configured to determine, according to the PDCP packet replication configuration information, a target bearer of the PDCP packet replication function to be enabled;

The opening module 75 is configured to enable the PDCP packet replication function of the target bearer when the network reaches the preset condition.

In an embodiment, the first indication module 72 includes:

The first sending submodule 721 is configured to send, to the PDCP layer, indication information indicating that the RLC service data unit has been successfully sent;

The second sending submodule 722 is configured to control the PDCP layer to indicate that another RLC entity RLC service data unit has been successfully sent based on the indication information.

In an embodiment, the first indication module 72 includes:

The third sending submodule 723 is configured to send, to another RLC entity, indication information indicating that the RLC service data unit has been successfully transmitted.

In an embodiment, the apparatus further includes:

The sending status determining module 76 is configured to control another RLC entity to determine a sending status of the service data unit corresponding to the RLC service data unit after receiving the indication that the RLC service data unit has been successfully sent;

The first execution module 77 is configured to perform a first preset operation based on the sending status.

In an embodiment, the first execution module 77 includes:

The first setting sub-module 771 is configured to set the sending status of the service data unit to be successfully sent when the sending status is that the service data unit has not been encapsulated into the protocol data unit; or

a first deletion submodule 772 configured to delete a service data unit; or

The first reject sub-module 773 is configured to no longer send service data units.

In an embodiment, the first execution module 77 includes:

The second setting sub-module 774 is configured to: when the sending status is that the service data unit has sent the at least one protocol data unit, set the sending status of the sent at least one protocol data unit to the acknowledgement message that the successful transmission has been received; or ,

The second deletion sub-module 775 is configured to delete at least one protocol data unit.

In an embodiment, the first execution module 77 further includes:

The first mobility sub-module 776 is configured to move the lower boundary of the transmission window to the next protocol data unit to be successfully transmitted for confirmation.

In an embodiment, the apparatus further includes:

The cache report module 78 is configured to send a message carrying the cache status report to the base station when the buffer status of the user equipment changes after the first preset operation is performed.

In an embodiment, the apparatus further includes:

The second determining module 79 is configured to determine that another RLC entity sends the RLC when one of the two RLC entities sends the number of RLC service data units of the target bearer that initiates the PDCP packet replication function exceeds the maximum number of retransmissions. The number of business data units;

The third determining module 80 is configured to determine that a radio link failure occurs if the number of times the RLC service data unit is sent by the other RLC entity exceeds the maximum number of retransmissions.

In this embodiment, when the number of retransmissions of one RLC entity exceeds the maximum number of times, the number of retransmissions of another RLC entity is determined, and then the wireless generation is determined when another RLC entity also has a problem that the number of retransmissions exceeds the maximum number of times. The link fails to avoid the problem of data terminals and large signaling overhead caused by connection reestablishment when the number of retransmissions of an RLC entity exceeds the maximum number of times.

In an embodiment, the apparatus further includes:

The fourth determining module 81 is configured to determine that the number of times the RLC service data unit is sent exceeds the maximum number of times when another RLC entity sends the RLC service data unit less than the maximum number of retransmissions before the target bearer turns off the PDCP packet replication function. The RLC entity with the number of retransmissions did not have a radio link failure;

The fifth determining module 82 is configured to determine that a radio link failure occurs if the target bearer turns off the PDCP packet replication function before the number of times the RLC service data unit is sent by the other RLC entity does not exceed the maximum number of retransmissions;

The first reconstruction module 83 is configured to: if the RLC entity that triggers the failure of the radio link is served by the primary base station, determine that a radio link failure with the primary base station occurs, and perform an RRC connection reestablishment operation;

The first reporting module 84 is configured to: if the RLC entity that triggers the failure of the radio link is served by the secondary base station, determine that a radio link failure occurs with the secondary base station, and send a report carrying the radio link failure report to the primary base station. Message.

In an embodiment, the apparatus further includes:

The second re-establishment module 85 is configured to: if at least one of the two RLC entities is served by the primary base station, determine that a radio link failure with the primary base station occurs, and perform an RRC connection re-establishment operation;

The second reporting module 86 is configured to determine that a radio link failure with the secondary base station occurs if both RLC entities are served by the secondary base station, and send a report message carrying the radio link failure report to the primary base station.

The above-mentioned apparatus provided by the embodiments of the present disclosure can thereby prevent one RLC entity from continuing to transmit corresponding service data units, reduce unnecessary waste of radio resources, and can also avoid sending a target bearer in an RLC entity. The number of times of the RLC service data unit exceeds the maximum number of retransmissions, and the number of times the RLC service data unit carried by the other RLC entity does not exceed the maximum number of retransmissions causes data interruption and large signaling overhead caused by connection reestablishment. problem.

FIG. 9 is a block diagram of a data transmission apparatus according to an exemplary embodiment, applied to a base station. As shown in FIG. 9, the data transmission apparatus includes:

The second receiving module 91 is configured to receive data of a target bearer that is sent by the user equipment to enable the PDCP packet replication function;

The second indication module 92 is configured to: after one RLC entity successfully receives the RLC service data unit corresponding to the target bearer, indicate to another RLC entity that the RLC service data unit has been successfully received.

FIG. 10 is a block diagram of another data transmission apparatus according to an exemplary embodiment. As shown in FIG. 10, on the basis of the foregoing embodiment shown in FIG. 9, in an embodiment, the apparatus further includes:

The second sending module 93 is configured to send a radio resource control message carrying the PDCP packet replication configuration information to the user equipment, where the PDCP packet replication configuration information is used by the user equipment to determine the target bearer of the PDCP packet replication function to be enabled.

In an embodiment, the second indication module 92 includes:

The fourth sending submodule 921 is configured to send, to the PDCP layer, indication information indicating that the RLC service data unit has been successfully received;

The fifth sending submodule 922 is configured to control the PDCP layer to indicate that another RLC entity RLC service data unit has been successfully received based on the indication information.

In an embodiment, the second indication module 92 includes:

The sixth sending submodule 923 is configured to send, to another RLC entity, indication information indicating that the RLC service data unit has been successfully received.

In an embodiment, the apparatus further includes:

a sixth determining module 94, configured to control another RLC entity to determine all protocol data units corresponding to the RLC service data unit after receiving the indication that the RLC service data unit has been successfully received;

The second execution module 95 is configured to perform a second preset operation on all protocol data units corresponding to the RLC service data unit.

In an embodiment, the second execution module 95 includes:

a third setting submodule 951 configured to set a receiving state of all protocol data units corresponding to the RLC service data unit to have been successfully received; and

The third deletion sub-module 952 is configured to delete all protocol data units corresponding to the RLC service data unit.

In an embodiment, the apparatus further includes:

The mobile module 96 is configured to: when all protocol data units of the RLC service data unit corresponding to the lower boundary of the receiving window have been correctly received, move the lower boundary of the receiving window to the next protocol data unit to be successfully transmitted.

In an embodiment, the apparatus further includes:

The cache status update module 97 is configured to update the cache value of the logical channel group corresponding to another RLC entity based on the original reception status of all protocol data units corresponding to the RLC service data unit and the reception status after the second preset operation is performed. .

FIG. 11 is a block diagram of a data transmission apparatus suitable for use in accordance with an exemplary embodiment. For example, the device 1100 can be a user device such as a mobile phone, a computer, a digital broadcast terminal, a messaging device, a game console, a tablet device, a medical device, a fitness device, a personal digital assistant, and the like.

Referring to Figure 11, apparatus 1100 can include one or more of the following components: processing component 1102, memory 1104, power component 1106, multimedia component 1108, audio component 1110, input/output (I/O) interface 1112, sensor component 1114, And a communication component 1116.

Processing component 1102 typically controls the overall operation of device 1100, such as operations associated with display, telephone calls, data communications, camera operations, and recording operations. Processing component 1102 can include one or more processors 1120 to execute instructions to perform all or part of the steps described above. Moreover, processing component 1102 can include one or more modules to facilitate interaction between component 1102 and other components. For example, processing component 1102 can include a multimedia module to facilitate interaction between multimedia component 1108 and processing component 1102.

The memory 1104 is configured to store various types of data to support operation at the device 1100. These numbers Examples of data include instructions for any application or method operating on device 1100, contact data, phone book data, messages, pictures, videos, and the like. The memory 1104 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 1106 provides power to various components of device 1100. Power component 1106 can include a power management system, one or more power sources, and other components associated with generating, managing, and distributing power for device 1100.

The multimedia component 1108 includes a screen between the device 1100 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 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 1108 includes a front camera and/or a rear camera. When the device 1100 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 1110 is configured to output and/or input an audio signal. For example, the audio component 1110 includes a microphone (MIC) that is configured to receive an external audio signal when the device 1100 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 1104 or transmitted via communication component 1116. In some embodiments, the audio component 1110 also includes a speaker for outputting an audio signal.

The I/O interface 1112 provides an interface between the processing component 1102 and a 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 1114 includes one or more sensors for providing a status assessment of various aspects to device 1100. For example, the sensor assembly 1114 can detect an open/closed state of the device 1100, the relative positioning of the components, such as a display and a keypad of the device 1100, and the sensor component 1114 can also detect a change in position of the device 1100 or a component of the device 1100, the user The presence or absence of contact with device 1100, device 1100 orientation or acceleration/deceleration and temperature change of device 1100. Sensor assembly 1114 can include a proximity sensor configured to detect the presence of nearby objects without any physical contact. Sensor assembly 1114 can also include Light sensors, such as CMOS or CCD image sensors, are used in imaging applications. In some embodiments, the sensor assembly 1114 can also include an acceleration sensor, a gyro sensor, a magnetic sensor, a pressure sensor, or a temperature sensor.

Communication component 1116 is configured to facilitate wired or wireless communication between device 1100 and other devices. The device 1100 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 1116 receives a broadcast signal or broadcast associated information from an external broadcast management system via a broadcast channel. In an exemplary embodiment, communication component 1116 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, apparatus 1100 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 1104 comprising instructions that, when executed, configurable by a processor 1120 of apparatus 1100 to perform the first Aspect method: based on two radio link layer control protocol RLC entities, respectively adopting an RLC acknowledge mode to transmit a PDCP packet and a PDCP replication packet of a target bearer of a packet data convergence protocol PDCP packet replication function; successfully transmitting in an RLC entity After the target carries the corresponding RLC service data unit, it indicates to the other RLC entity that the RLC service data unit has been successfully transmitted.

In an embodiment, the non-transitory computer readable storage medium may be a ROM, a random access memory (RAM), a CD-ROM, a magnetic tape, a floppy disk, and an optical data storage device.

FIG. 12 is a block diagram of a data transmitting apparatus suitable for use in accordance with an exemplary embodiment. Apparatus 1200 can be provided as a base station. Referring to Figure 12, apparatus 1200 includes a processing component 1222, a wireless transmit/receive component 1224, an antenna component 1226, and a signal processing portion specific to the wireless interface. The processing component 1222 can further include one or more processors.

One of the processing components 1222 can be configured to perform the data transfer method described in the second aspect above.

In an exemplary embodiment, there is also provided a non-transitory computer readable storage medium comprising instructions executable by processing component 1222 of apparatus 1200 to perform the method described in the second aspect above. 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.

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 user equipment, and the method includes:

Transmitting a PDCP packet and a PDCP replication packet of a target bearer of the packet data aggregation protocol PDCP packet replication function by using an RLC acknowledgement mode, respectively, based on two radio link layer control protocol RLC entities;

After an RLC entity successfully sends the RLC service data unit corresponding to the target bearer, it indicates to another RLC entity that the RLC service data unit has been successfully sent.
The method of claim 1 further comprising:

Receiving, by the base station, a radio resource control message that carries PDCP packet replication configuration information;

Determining, according to the PDCP packet replication configuration information, a target bearer of the PDCP packet replication function to be enabled;

When the network reaches the preset condition, the PDCP packet replication function of the target bearer is enabled.
The method according to claim 1, wherein the indicating to the another RLC entity that the RLC service data unit has been successfully sent comprises:

Sending, to the PDCP layer, the indication information indicating that the RLC service data unit has been successfully sent;

Controlling, by the PDCP layer, that the RLC service data unit of the another RLC entity has been successfully transmitted based on the indication information.
The method according to claim 1, wherein the indicating to the another RLC entity that the RLC service data unit has been successfully sent comprises:

And transmitting, to the another RLC entity, indication information indicating that the RLC service data unit has been successfully transmitted.
The method of claim 1 further comprising:

Controlling, by the another RLC entity, after determining that the RLC service data unit has been successfully sent, determining a transmission status of the service data unit corresponding to the RLC service data unit;

A first preset operation is performed based on the transmission state.
The method according to claim 5, wherein the performing the first preset operation based on the sending status comprises:

When the sending status is that the service data unit has not been encapsulated into a protocol data unit, setting a sending status of the service data unit to be successfully sent; or

Delete the business data unit; or,

The service data unit is no longer sent.
The method according to claim 5, wherein the performing the first preset operation based on the sending status comprises:

And when the sending status is that the service data unit has sent at least one protocol data unit, setting a sending status of the sent at least one protocol data unit to a confirmation message that a successful transmission has been received; or

Deleting the at least one protocol data unit.
The method according to claim 7, wherein the performing the first preset operation further comprises:

Move the lower boundary of the send window to the next protocol data unit to be acknowledged successfully sent.
The method of claim 5, wherein the method further comprises:

After the first preset operation is performed, when the buffer status of the user equipment changes, a message carrying a buffer status report is sent to the base station.
The method according to claim 9, wherein the buffer status report includes cache status information of a logical channel group corresponding to the another RLC entity: or,

The cache status report includes cache status information of each of the logical channels.
The method of claim 9 wherein the method further comprises:

Determining, by the one of the two RLC entities, that the number of times the RLC service data unit of the target bearer that is to enable the PDCP packet replication function exceeds the maximum number of retransmissions, determining the number of times the another RLC entity sends the RLC service data unit ;

If the number of times the another RLC entity sends the RLC service data unit exceeds the maximum number of retransmissions, it is determined that a radio link failure occurs.
The method according to claim 11, wherein after determining the number of times the another RLC entity sends the RLC service data unit, the method further includes:

If the number of times the another RLC entity sends the RLC service data unit does not exceed the maximum number of retransmissions before the target bearer turns off the PDCP packet replication function, determining to send the RLC service data unit The RLC entity whose number exceeds the maximum number of retransmissions does not have a radio link failure.

If the target bearer turns off the PDCP packet replication function before the number of times the another RLC entity sends the RLC service data unit does not exceed the maximum number of retransmissions, it is determined that a radio link failure occurs;

If the RLC entity that triggers the failure of the radio link is served by the primary base station, determining that a radio link failure with the primary base station occurs, performing an RRC connection reestablishment operation;

If the RLC entity that triggers the failure of the radio link is served by the secondary base station, it is determined that the radio link failure with the secondary base station occurs, and a report message carrying the radio link failure report is sent to the primary base station.
The method according to claim 11, wherein after the determining that the wireless link fails, the method further comprises:

If at least one of the two RLC entities is served by the primary base station, determining to occur with the primary base station The radio link fails, and the RRC connection reestablishment operation is performed;

If both the RLC entities are served by the secondary base station, it is determined that the wireless link failure with the secondary base station occurs, and a report message carrying the wireless link failure report is sent to the primary base station.
A data transmission method is characterized in that it is applied to a base station, and the method includes:

Receiving data of a target bearer that is sent by the user equipment to enable the PDCP packet replication function;

After an RLC entity successfully receives the RLC service data unit corresponding to the target bearer, it indicates to another RLC entity that the RLC service data unit has been successfully received.
The method of claim 14, wherein the method further comprises:

Sending, to the user equipment, a radio resource control message carrying the PDCP packet replication configuration information, where the PDCP packet replication configuration information is used by the user equipment to determine a target bearer of the PDCP packet replication function to be enabled.
The method according to claim 14, wherein the indicating to the another RLC entity that the RLC service data unit has been successfully received comprises:

Sending, to the PDCP layer, the indication information indicating that the RLC service data unit has been successfully received;

Controlling, by the PDCP layer, that the RLC service data unit of the another RLC entity has been successfully received based on the indication information.
The method according to claim 14, wherein the indicating to the another RLC entity that the RLC service data unit has been successfully sent comprises:

The indication information indicating that the RLC service data unit has been successfully received is sent to the another RLC entity.
The method according to claim 14, wherein said one RLC entity and said another RLC entity are located in a base station; or

The one RLC entity and the another RLC entity are located in a primary base station and a secondary base station, respectively.
The method of claim 14, wherein the method further comprises:

Controlling, by the another RLC entity, after determining that the RLC service data unit has been successfully received, determining all protocol data units corresponding to the RLC service data unit;

Performing a second preset operation on all protocol data units corresponding to the RLC service data unit.
The method according to claim 19, wherein the performing the second preset operation comprises:

Setting a receiving state of all protocol data units corresponding to the RLC service data unit to have been successfully received; and,

All protocol data units corresponding to the RLC service data unit are deleted.
The method of claim 19, wherein the method further comprises:

When all protocol data units of the RLC service data unit corresponding to the lower boundary of the receiving window have been correctly received, the lower boundary of the receiving window is moved to the next protocol data unit to be successfully transmitted.
The method of claim 19, wherein the method further comprises:

And updating, according to an original receiving state of all protocol data units corresponding to the RLC service data unit and a receiving state after performing the second preset operation, a cache value of a logical channel group corresponding to the another RLC entity.
A data transmission device is characterized in that it is applied to a user equipment, and the device includes:

The first sending module is configured to send, according to the two radio link layer control protocol RLC entities, the PDCP packet and the PDCP replication packet of the target bearer of the packet data aggregation protocol PDCP packet replication function by using the RLC acknowledge mode;

The first indication module is configured to: after one RLC entity successfully sends the RLC service data unit corresponding to the target bearer, indicate to another RLC entity that the RLC service data unit has been successfully sent.
The device of claim 23, wherein the device further comprises:

The first receiving module is configured to receive a radio resource control message that is sent by the base station and that carries the PDCP packet replication configuration information;

a first determining module, configured to determine, according to the PDCP packet replication configuration information, a target bearer that is to be enabled to perform the PDCP packet replication function;

The module is enabled to be configured to enable the PDCP packet replication function of the target bearer when the network reaches the preset condition.
The device according to claim 23, wherein the first indication module comprises:

The first sending submodule is configured to send, to the PDCP layer, the indication information that the RLC service data unit has been successfully sent;

And a second sending submodule configured to control the PDCP layer to indicate, according to the indication information, that the RLC service data unit of the another RLC entity has been successfully sent.
The device according to claim 23, wherein the first indication module comprises:

And a third sending submodule configured to send, to the another RLC entity, indication information indicating that the RLC service data unit has been successfully sent.
The device of claim 23, wherein the device further comprises:

a sending status determining module, configured to control the another RLC entity to determine a sending status of the service data unit corresponding to the RLC service data unit after receiving the indication that the RLC service data unit has been successfully sent;

The first execution module is configured to perform a first preset operation based on the sending status.
The apparatus according to claim 27, wherein the first execution module comprises:

a first setting submodule configured to: when the sending status is that the service data unit has not been encapsulated into a protocol data unit, set a sending status of the service data unit to be successfully sent; or

a first deletion submodule configured to delete the service data unit; or

The first reject submodule is configured to no longer send the service data unit.
The apparatus according to claim 27, wherein the first execution module comprises:

a second setting submodule configured to: when the sending status is that the service data unit has sent at least one protocol data unit, set a sending status of the sent at least one protocol data unit to have received a successful transmission Confirmation message; or,

And a second deletion submodule configured to delete the at least one protocol data unit.
The apparatus according to claim 29, wherein the first execution module further comprises:

The first mobile submodule is configured to move the lower boundary of the transmit window to the next protocol data unit to be successfully transmitted for confirmation.
The device of claim 27, wherein the device further comprises:

The cache report module is configured to send a message carrying the cache status report to the base station when the buffer status of the user equipment changes after the first preset operation is performed.
The apparatus according to claim 31, wherein the buffer status report includes cache status information of a logical channel group corresponding to the another RLC entity: or,

The cache status report includes cache status information of each of the logical channels.
The device of claim 31, wherein the device further comprises:

a second determining module, configured to: when one of the two RLC entities sends the number of RLC service data units of the target bearer that enables the PDCP packet replication function to exceed the maximum number of retransmissions, determine that another RLC entity sends The number of times of the RLC service data unit;

The third determining module is configured to determine that a radio link failure occurs if the number of times the another RLC entity sends the RLC service data unit exceeds the maximum number of retransmissions.
The device of claim 33, wherein the device further comprises:

a fourth determining module, configured to: if the number of times the another RLC entity sends the RLC service data unit does not exceed the maximum number of retransmissions before the target bearer turns off the PDCP packet replication function, determine The RLC entity that sends one RLC service data unit exceeds the maximum number of retransmissions does not have a radio link failure;

a fifth determining module, configured to determine that a wireless chain is determined if the target bearer disables the PDCP packet replication function before the number of times the another RLC entity sends the RLC service data unit does not exceed the maximum number of retransmissions Road failure

a first reconstruction module, configured to: if the RLC entity that triggers the failure of the radio link is served by the primary base station, determine that a radio link failure with the primary base station occurs, and perform an RRC connection reestablishment operation;

The first reporting module is configured to: if the RLC entity that triggers the failure of the radio link is served by the secondary base station, determine that a radio link failure occurs with the secondary base station, and send a radio link failure report to the primary base station. Report a message.
The device of claim 33, wherein the device further comprises:

a second re-establishment module, configured to: if at least one of the two RLC entities is served by the primary base station, determine that a radio link failure with the primary base station occurs, and perform an RRC connection reestablishment operation;

a second reporting module, configured to: if the two RLC entities are all served by the secondary base station, determine that a wireless link failure occurs with the secondary base station, and send a report carrying the wireless link failure report to the primary base station Message.
A data transmission device is characterized in that it is applied to a base station, and the device comprises:

a second receiving module, configured to receive data of a target bearer that is sent by the user equipment to enable the PDCP packet replication function;

The second indication module is configured to: after one RLC entity successfully receives the RLC service data unit corresponding to the target bearer, indicate to another RLC entity that the RLC service data unit has been successfully received.
The device of claim 36, wherein the device further comprises:

The second sending module is configured to send, to the user equipment, a radio resource control message that carries the PDCP packet replication configuration information, where the PDCP packet replication configuration information is used by the user equipment to determine a target bearer of the PDCP packet replication function to be enabled. .
The device according to claim 36, wherein the second indication module comprises:

a fourth sending submodule, configured to send, to the PDCP layer, the indication information that the RLC service data unit has been successfully received;

And a fifth sending submodule configured to control the PDCP layer to indicate, according to the indication information, that the RLC service data unit of the another RLC entity has been successfully received.
The device according to claim 36, wherein the second indication module comprises:

And a sixth sending submodule configured to send, to the another RLC entity, indication information indicating that the RLC service data unit has been successfully received.
The apparatus of claim 36 wherein said one RLC entity and said another RLC entities are located in one base station; or,

The one RLC entity and the another RLC entity are located in a primary base station and a secondary base station, respectively.
The device of claim 36, wherein the device further comprises:

a sixth determining module, configured to control the another RLC entity to determine, after receiving the indication that the RLC service data unit has been successfully received, all protocol data units corresponding to the RLC service data unit;

The second execution module is configured to perform a second preset operation on all protocol data units corresponding to the RLC service data unit.
The device according to claim 41, wherein the second execution module comprises:

a third setting submodule configured to set a receiving state of all protocol data units corresponding to the RLC service data unit to be successfully received; and

And a third deletion submodule configured to delete all protocol data units corresponding to the RLC service data unit.
The device of claim 41, wherein the device further comprises:

And a mobile module configured to: when all protocol data units of the RLC service data unit corresponding to the lower boundary of the receiving window have been correctly received, move the lower boundary of the receiving window to the next protocol data unit to be successfully transmitted.
The device according to claim 41, wherein the device further comprises:

a cache state update module, configured to update a logic corresponding to the another RLC entity based on an original receiving state of all protocol data units corresponding to the RLC service data unit and a receiving state after performing the second preset operation The cache value of the channel group.
A user equipment, comprising:

processor;

a memory for storing processor executable instructions;

Wherein the processor is configured to:

Transmitting a PDCP packet and a PDCP replication packet of a target bearer of the packet data aggregation protocol PDCP packet replication function by using an RLC acknowledgement mode, respectively, based on two radio link layer control protocol RLC entities;

After an RLC entity successfully sends the RLC service data unit corresponding to the target bearer, it indicates to another RLC entity that the RLC service data unit has been successfully sent.
A base station, comprising:

Processor

a memory for storing processor executable instructions;

Wherein the processor is configured to:

Receiving data of a target bearer that is sent by the user equipment to enable the PDCP packet replication function;

After an RLC entity successfully receives the RLC service data unit corresponding to the target bearer, it indicates to another RLC entity that the RLC service data unit has been successfully received.
A non-transitory computer readable storage medium having computer instructions stored thereon, wherein the instructions are executed by a processor to implement the following steps:

Transmitting a PDCP packet and a PDCP replication packet of a target bearer of the packet data aggregation protocol PDCP packet replication function by using an RLC acknowledgement mode, respectively, based on two radio link layer control protocol RLC entities;

After an RLC entity successfully sends the RLC service data unit corresponding to the target bearer, it indicates to another RLC entity that the RLC service data unit has been successfully sent.
A non-transitory computer readable storage medium having computer instructions stored thereon, wherein the instructions are executed by a processor to implement the following steps:

Receiving data of a target bearer that is sent by the user equipment to enable the PDCP packet replication function;

After an RLC entity successfully receives the RLC service data unit corresponding to the target bearer, it indicates to another RLC entity that the RLC service data unit has been successfully received.