WO2015113296A1 - Method and device for state feedback in dual link mode - Google Patents

Abstract

Provided in the present invention are a method and device for state feedback in a dual link mode. The method comprises: a user equipment determines that transmission of an RLC state report to an auxiliary base station is required; and, when a predetermined RLC state report transmission condition is satisfied, the user equipment transmits the RLC state report to the auxiliary base station and transmits a PDCP state report to a main base station. This allows a PDCP layer of the main base station to learn in a timely manner a receive state of the UE with respect to PDCP data packets, thus allowing a transmission window of the main base station to move in a timely manner to increase the rate of data transmission.

Description

 State feedback method and device in dual connection mode

Technical field

 The embodiments of the present invention relate to communication technologies, and in particular, to a state feedback method and device in a dual connectivity mode. Background technique

 In the traditional 2G/3G network, carriers in the lower frequency band are generally used to provide services for users. However, with the popularity of smartphones, users have placed higher demands on the transmission rate of wireless networks. In order to meet the needs of users, it is necessary to gradually use resource-rich high-band carriers to provide services.

 In the existing Long Term Evolution (LTE) system, in the LTE system of the single-connection mode, the user equipment (User Equipment, UE for short) is only associated with an evolved base station (eUTRAN NodeB, referred to as: The eNB is connected to and communicates. The Packet Data Convergence Protocol (PDCP) layer of the eNB can learn the PDCP protocol data from the Radio Link Control (RPC) layer through the internal primitive. Received by the Protocol Data Unit (PDU).

 In the dual connectivity mode, a part of the data received by the UE is sent by the primary eNB (Macro eNB, abbreviated as: M-eNB), and the other part is sent by the M-eNB to the secondary eNB through the X2 interface. S-eNB), which is sent by the S-eNB to the UE. It is connected to and communicates with two eNBs at the same time. However, how the PDCP layer of the M-eNB knows the UE's reception status of the PDCP data packet in time so that the transmission window of the M-eNB can move in time, thereby further increasing the data transmission rate is an urgent problem to be solved. Summary of the invention

 The embodiment of the invention provides a state feedback method and device in a dual connectivity mode, so that the PDCP layer of the primary base station can know the receiving state of the PDCP data packet by the UE in time.

 In a first aspect, an embodiment of the present invention provides a user equipment, including:

a determining module, configured to determine that a radio link control RLC status report needs to be sent to the secondary base station; and a sending module, configured to: when the preset RLC status report sending condition is met, to the secondary base station The RLC status report is sent, and a packet data convergence protocol PDCP status report is sent to the primary base station. In a first possible implementation manner of the first aspect, the determining module is specifically configured to: when receiving the status report indication information sent by the secondary base station, determine that the RLC status report needs to be sent to the secondary base station; The status report indication information is used to indicate that the user equipment sends the RLC status report to the secondary base station; and/or

 The data reception failure of the RLC layer is detected, and after the reordering timer of the RLC entity expires, it is determined that the RLC status report needs to be sent to the secondary base station.

 With reference to the first aspect and the first possible implementation manner, in a second possible implementation manner, the determining module is further configured to:

 After the number of the sent RLC PDU data is greater than a preset value, determining that the RLC status report needs to be sent to the secondary base station; and/or

 After the number of bytes of the sent RLC PDU data is greater than a preset value, it is determined that the RLC status report needs to be sent to the secondary base station.

 In a third possible implementation manner of the first aspect, the preset RLC status report sending condition includes:

 The RLC status report prohibits the timer from running; or,

 The RLC status report prohibits the timer from terminating.

 With reference to the first aspect to the third possible implementation, in a fourth possible implementation, the user equipment further includes:

 a receiving module, configured to receive a first status report configuration message sent by the secondary base station, where the first status report configuration message is used to configure the user equipment to send the RLC status report to the secondary base station The primary base station sends the PDCP status report; or

 The receiving module is configured to receive a second status report configuration message sent by the primary base station, where the second status report configuration message is configured to configure, when the user equipment sends the RLC status report to the secondary base station, The primary base station sends the PDCP status report.

 With reference to the first aspect or the fourth possible implementation manner, in a fifth possible implementation manner, the sending module is specifically configured to:

 Transmitting, by the lower layer, the first transmission opportunity corresponding to the primary base station to the primary base station to send the PDCP status report; or

Transmitting, by the lower layer, a preset transmission opportunity corresponding to the primary base station to the primary base station Report the PDCP status; or,

 Sending the PDCP status report to the primary base station at a time when the RLC status report is sent to the secondary base station or after sending the RLC status report to the secondary base station; or

 Sending the PDCP status report to the primary base station after receiving the status report indication information or receiving the status report indication information; or

 After detecting that the data reception of the RLC layer fails, and sending the PDCP status report to the primary base station after a timeout of the reordering timer of the RLC entity or after a timeout period; or

 After the PDCP status report delay timer expires, the PDCP status report is sent to the primary base station.

 According to the fifth possible implementation manner of the first aspect, in a sixth possible implementation, the sending module is specifically configured to: after the PDCP status report delay timer expires, according to the latest PDCP data packet receiving status Sending the PDCP status report to the primary base station.

 According to a sixth possible implementation manner of the first aspect, in a seventh possible implementation, the user equipment further includes a processing module, configured to restart the PDCP state after the PDCP status report is sent to a lower layer Reporting a delay timer; or, after actively triggering sending the RLC status report, starting the PDCP status report delay timer.

 With reference to the fifth to seventh possible implementation manners of the first aspect, in an eighth possible implementation manner, the PDCP status report delay timer is started when the user equipment receives the status report indication information .

 With reference to the first aspect to the eighth possible implementation manner, in the ninth possible implementation manner, the PDCP status report is specifically:

 And the user equipment is based on a status report of the PDCP data packet sent by the secondary base station; or the user equipment is based on a status report of the PDCP data packet sent by the secondary base station and the primary base station.

According to the ninth possible implementation manner of the first aspect, in a tenth possible implementation manner, a status report of the PDCP data packet sent by the user equipment based on the secondary base station is that the user equipment is based on the Determining a data receiving state of the RLC layer between the user equipment and the secondary base station; or The status report of the PDCP data packet sent by the user equipment based on the secondary base station and the primary base station is a data receiving status of the user equipment based on the RLC layer between the user equipment and the secondary base station. And determining, by the data receiving state of the RLC layer between the user equipment and the primary base station.

 According to the tenth possible implementation manner of the first aspect, in the eleventh possible implementation manner, the PDCP data packet is a PDCP PDU, or the PDCP data packet is a PDCP service data unit SDU.

 With reference to the first possible implementation of the first aspect, the eleventh possible implementation manner, in the twelfth possible implementation manner, the status report indication information includes a retransmission identifier; When the receiving module receives the status report indication information that is sent by the secondary base station and includes the retransmission identifier, the sending module retransmits the PDCP status report to the primary base station.

 With reference to the first aspect to the twelfth possible implementation manner, in a thirteenth possible implementation manner, the sending module is further configured to send a second acknowledgement information to the secondary base station, where the second acknowledgement information is used Informing the secondary base station, the user equipment has sent the PDCP status report to the primary base station.

 In a second aspect, an embodiment of the present invention provides a base station, including:

 a sending module, configured to send a status report indication information notification message to the primary base station, where the status report indication information notification message is used to notify the primary base station, and the user equipment sends a packet data convergence protocol PDCP status report to the primary base station;

 a receiving module, configured to receive first acknowledgement information sent by the primary base station, where the first acknowledgement information is sent by the primary base station to the base station after receiving the PDCP status report sent by the user equipment; Or receiving the second acknowledgment information sent by the user equipment, where the second acknowledgment information is sent by the user equipment to the base station after sending the PDCP status report to the primary base station.

In a first possible implementation manner of the second aspect, the sending module is further configured to: before the status report indicates that the information retransmission timer expires, if the receiving module does not receive the And the first acknowledgement information, the status report indication information is retransmitted to the user equipment, so that the user equipment retransmits the PDCP status report to the primary base station; or the status report indicates information retransmission timing If the receiving module does not receive the second acknowledgement information sent by the user equipment, the secondary base station is heavy to the user equipment. And transmitting the status report indication information, so that the user equipment retransmits the PDCP status report to the primary base station.

 According to the first possible implementation manner of the second aspect, in a second possible implementation manner, the status report indication information of the retransmission includes a retransmission identifier, so that the user equipment is to the main device The base station retransmits the PDCP status report.

 With the second aspect to the second possible implementation, in a third possible implementation, the sending module is further configured to send a first status report configuration message to the user equipment, where the first status report configuration The message is used to configure the user equipment to send the PDCP status report to the primary base station when sending the RLC status report to the base station.

 In a third aspect, an embodiment of the present invention provides a base station, including:

 a receiving module, configured to receive a packet data convergence protocol PDCP status report sent by the user equipment, where the PDCP status report is sent by the user equipment to the base station when a preset RLC status report sending condition is met;

 And a sending module, configured to send the first acknowledgement information to the secondary base station, where the first acknowledgement information is used to notify the secondary base station, and the base station has received the PDCP status report sent by the user equipment.

 In a first possible implementation manner of the third aspect, the PDCP status report is specifically: the user equipment is based on a status report of a PDCP data packet sent by the secondary base station; or, the user equipment is based on the auxiliary a status report of the PDCP data packet sent by the base station and the base station.

 According to a first possible implementation manner of the third aspect, in a second possible implementation manner, the status report of the PDCP data packet is that the user equipment is based on an RLC layer between the user equipment and the secondary base station The data reception status is determined; or

 The status report of the PDCP data packet is a data receiving status of the user equipment based on the RLC layer between the user equipment and the secondary base station, and the RLC between the user equipment and the base station The data reception status of the layer is determined.

 According to a second possible implementation manner of the third aspect, in a third possible implementation manner, the PDCP data packet is a PDCP PDU, or the PDCP data packet is a PDCP service data unit SDU.

In combination with the third aspect to the third possible implementation manner, in a fourth possible implementation manner, The receiving module is further configured to receive a status report indication information notification message sent by the secondary base station, where the status report indication information notification message is used to notify the base station, and the user equipment sends the PDCP status to the base station. report.

 According to a fourth possible implementation manner of the third aspect, in a fifth possible implementation, the sending module is further configured to send a second status report configuration message to the user equipment, where the second status report configuration The message is used to configure the user equipment to feed back the PDCP status report to the base station when transmitting a radio link control RLC status report to the secondary base station.

 In a fourth aspect, the embodiment of the present invention provides a state feedback method in a dual connectivity mode, including: determining, by a user equipment, that a radio link control RLC status report needs to be sent to a secondary base station;

 When the user equipment meets the preset RLC status report sending condition, the user equipment sends the RLC status report to the secondary base station, and sends a packet data convergence protocol PDCP status report to the primary base station.

 In a first possible implementation manner of the fourth aspect, the user equipment determines that the RLC status report needs to be sent to the secondary base station, including:

 When the user equipment receives the status report indication information sent by the secondary base station, determining that the RLC status report needs to be sent to the secondary base station, where the status report indication information is used to indicate that the user equipment is The secondary base station sends the RLC status report; and/or

 The user equipment detects that the data reception of the RLC layer fails, and after the reordering timer of the RLC entity times out, determines that the RLC status report needs to be sent to the secondary base station.

 With reference to the fourth aspect and the first possible implementation manner, in the second possible implementation manner, the user equipment determines that the RLC status report needs to be sent to the secondary base station, and the method further includes:

 After the number of the sent RLC PDU data is greater than a preset value, the user equipment determines that the RLC status report needs to be sent to the secondary base station; and/or

 After the number of bytes of the sent RLC PDU data is greater than a preset value, the user equipment determines that the RLC status report needs to be sent to the secondary base station.

 In a third possible implementation manner of the fourth aspect, the preset RLC status report sending condition includes:

 The RLC status report prohibits the timer from running; or,

 The RLC status report prohibits the timer from terminating.

With reference to the fourth aspect to the third possible implementation manner, in a fourth possible implementation manner, before the user equipment determines that the RLC status report needs to be sent to the secondary base station, the method further includes: Receiving, by the user equipment, a first status report configuration message sent by the secondary base station, where the first status report configuration message is configured to configure, when the user equipment sends the RLC status report to the secondary base station, to the The primary base station sends the PDCP status report; or

 Receiving, by the user equipment, a second status report configuration message sent by the primary base station, where the second status report configuration message is configured to configure, when the user equipment sends the RLC status report to the secondary base station, to the The primary base station sends the PDCP status report.

 With reference to the fourth aspect or the fourth possible implementation manner, in a fifth possible implementation manner, the sending, by the primary base station, a PDCP status report includes:

 Sending, by the user equipment, the PDCP status report to the primary base station by the first transmission opportunity corresponding to the primary base station indicated by the lower layer; or

 Sending, by the user equipment, the PDCP status report to the primary base station by using a preset transmission opportunity corresponding to the primary base station indicated by a lower layer; or

 Sending, by the user equipment, the PDCP status report to the primary base station at a time of sending the RLC status report to the secondary base station or sending the RLC status report to the secondary base station; or ,

 The user equipment sends the PDCP status report to the primary base station within a preset time after receiving the status report indication information or the status report indication information; or the user equipment is detecting The data reception to the RLC layer fails, and the PDCP status report is sent to the primary base station after a reordering timer of the RLC entity times out or after a timeout; or

 After the PDCP status report delay timer expires, the user equipment sends the PDCP status report to the primary base station.

 According to the fifth possible implementation manner of the fourth aspect, in a sixth possible implementation manner, after the PDCP status report delay timer expires, the user equipment sends the PDCP status report to the primary base station, including :

 After the PDCP status report delay timer expires, the user equipment sends the PDCP status report to the primary base station according to the latest PDCP data packet reception status.

 According to the sixth possible implementation manner of the fourth aspect, in a seventh possible implementation, the method further includes:

After the PDCP status report is sent to the lower layer, the user equipment restarts the PDCP State report delay timer; or

 After the user equipment actively triggers sending the RLC status report, the user equipment starts the PDCP status report delay timer.

 With reference to the fifth to seventh possible implementation manners of the fourth aspect, in an eighth possible implementation manner, the PDCP status report delay timer is started when the user equipment receives the status report indication information .

 With reference to the fourth aspect to the eighth possible implementation manner, in the ninth possible implementation manner, the PDCP status report is specifically:

 And the user equipment is based on a status report of the PDCP data packet sent by the secondary base station; or the user equipment is based on a status report of the PDCP data packet sent by the secondary base station and the primary base station.

 According to the ninth possible implementation manner of the fourth aspect, in a tenth possible implementation manner, the status report of the PDCP data packet sent by the user equipment based on the secondary base station is that the user equipment is based on the Determining a data receiving state of the RLC layer between the user equipment and the secondary base station; or

 The status report of the PDCP data packet sent by the user equipment based on the secondary base station and the primary base station is a data receiving status of the user equipment based on the RLC layer between the user equipment and the secondary base station. And determining, by the data receiving state of the RLC layer between the user equipment and the primary base station.

 According to the tenth possible implementation manner of the fourth aspect, in the eleventh possible implementation manner, the PDCP data packet is a PDCP PDU, or the PDCP data packet is a PDCP service data unit SDU.

 With reference to the first possible implementation manner of the fourth aspect, the eleventh possible implementation manner, in the twelfth possible implementation manner, the status report indication information includes a retransmission identifier; When receiving the status report indication information that is sent by the secondary base station and including the retransmission identifier, the user equipment retransmits the PDCP status report to the primary base station.

With reference to the fourth aspect to the twelfth possible implementation manner, in the thirteenth possible implementation manner, after the user equipment sends the PDCP status report to the primary base station, the method further includes: The secondary base station sends a second acknowledgement information, where the second acknowledgement information is used to notify the secondary base station, and the user equipment has sent the PDCP status report to the primary base station. In a fifth aspect, the embodiment of the present invention provides a state feedback method in a dual connectivity mode, including: the secondary base station sends a status report indication information notification message to the primary base station, where the status report indication information notification message is used to notify the primary base station The user equipment sends a packet data convergence protocol PDCP status report to the primary base station;

 Receiving, by the primary base station, the first acknowledgement information sent by the primary base station, where the first acknowledgement information is sent by the primary base station to the secondary base station after receiving the PDCP status report sent by the user equipment; Or the second base station sends the second acknowledgement information sent by the user equipment, where the second acknowledgement information is sent by the user equipment to the secondary base station after sending the PDCP status report to the primary base station.

 In a first possible implementation manner of the fifth aspect, after the sending, by the secondary base station, the status report indication information notification message to the primary base station, the method further includes:

 Before the status report indicates that the information retransmission timer expires, if the secondary base station does not receive the first acknowledgement information sent by the primary base station, the secondary base station retransmits the status report indication to the user equipment. Information, to enable the user equipment to retransmit the PDCP status report to the primary base station; or

 Before the status report indicates that the information retransmission timer expires, if the secondary base station does not receive the second acknowledgement information sent by the user equipment, the secondary base station retransmits the status to the user equipment. Reporting information to enable the user equipment to retransmit the PDCP status report to the primary base station.

 According to the first possible implementation manner of the fifth aspect, in a second possible implementation, the status report indication information of the retransmission includes a retransmission identifier, so that the user equipment is to the main device The base station retransmits the PDCP status report.

 With reference to the fifth aspect to the second possible implementation manner, in a third possible implementation manner, before the sending, by the secondary base station, the status report indication information notification message to the primary base station, the method further includes:

 The secondary base station sends a first status report configuration message to the user equipment, where the first status report configuration message is used to configure the user equipment to send the RLC status report to the secondary base station to the primary device. The base station transmits the PDCP status report.

In a sixth aspect, the embodiment of the present invention provides a state feedback method in a dual connectivity mode, including: a primary base station receiving a packet data convergence protocol PDCP status report sent by a user equipment; the PDCP status report is that the user equipment meets a pre- Set the RLC status report when sending conditions to the office Sent by the primary base station;

 The primary base station sends a first acknowledgement information to the secondary base station, where the first acknowledgement information is used to notify the secondary base station, and the primary base station has received the PDCP status report sent by the user equipment.

 In a first possible implementation manner of the sixth aspect, the PDCP status report is specifically: the user equipment is based on a status report of a PDCP data packet sent by the secondary base station; or, the user equipment is based on the auxiliary a status report of the PDCP data packet sent by the base station and the primary base station.

 According to a first possible implementation manner of the sixth aspect, in a second possible implementation manner, the status report of the PDCP data packet is that the user equipment is based on an RLC layer between the user equipment and the secondary base station The data reception status is determined; or

 The status report of the PDCP data packet is a data receiving status of the user equipment based on the RLC layer between the user equipment and the secondary base station, and the foregoing between the user equipment and the primary base station The data reception status of the RLC layer is determined.

 According to a second possible implementation manner of the sixth aspect, in a third possible implementation, the PDCP data packet is a PDCP PDU, or the PDCP data packet is a PDCP service data unit SDU.

 With reference to the sixth aspect to the third possible implementation manner, in a fourth possible implementation, before the receiving, by the primary base station, the PDCP status report sent by the user equipment, the method includes:

 The primary base station receives a status report indication information notification message sent by the secondary base station, where the status report indication information notification message is used to notify the primary base station, and the user equipment sends the PDCP status report to the primary base station. .

 According to the fourth possible implementation manner of the sixth aspect, in a fifth possible implementation manner, before the receiving, by the primary base station, the status report indication information notification message sent by the secondary base station, the method further includes: The user equipment sends a second status report configuration message, where the second status report configuration message is used to configure the user equipment to feed back to the primary base station when sending a radio link control RLC status report to the secondary base station. Describe the PDCP status report.

The state feedback method and device in the dual connectivity mode provided by the embodiment of the present invention, the user equipment determines that the RLC status report needs to be sent to the secondary base station, and sends the RLC status report to the secondary base station when the preset RLC status report transmission condition is met. And sending a PDCP status report to the primary base station, Therefore, the PDCP layer of the primary base station can timely know the receiving state of the user equipment for the PDCP data packet, thereby enabling the transmission window of the primary base station to move in time, thereby improving the data transmission rate. DRAWINGS

 In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, a brief description of the drawings used in the embodiments or the prior art description will be briefly described below. Obviously, the drawings in the following description It is a certain embodiment of the present invention, and other drawings can be obtained from those skilled in the art without any inventive labor.

 1 is a schematic structural diagram of Embodiment 1 of a user equipment according to the present invention;

 2 is a schematic structural diagram of Embodiment 1 of a base station according to the present invention;

 3 is a schematic structural diagram of Embodiment 2 of a base station according to the present invention;

 4 is a flowchart of Embodiment 1 of a state feedback method in a dual connectivity mode according to the present invention; FIG. 5 is a schematic diagram of a PDCP state report format in a state feedback method in dual connectivity mode according to the present invention;

 6 is a flowchart of Embodiment 2 of a state feedback method in a dual connectivity mode according to the present invention; FIG. 7 is a flowchart of Embodiment 3 of a state feedback method in a dual connectivity mode according to the present invention; FIG. 9 is a flowchart of Embodiment 5 of a state feedback method in a dual connectivity mode according to the present invention; FIG. 10 is a flowchart of Embodiment 6 of a state feedback method in a dual connectivity mode according to the present invention; 11 is a flowchart of Embodiment 7 of a state feedback method in a dual connectivity mode according to the present invention; FIG. 12 is a signaling flowchart of Embodiment 8 of a state feedback method in dual connectivity mode according to the present invention. detailed description

 The technical solutions in the embodiments of the present invention are clearly and completely described in the following with reference to the accompanying drawings in the embodiments of the present invention. It is a partial embodiment of the invention, and not all of the embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative efforts are within the scope of the present invention.

FIG. 1 is a schematic structural diagram of Embodiment 1 of a user equipment according to the present invention. As shown in FIG. 1 , the user equipment 10 provided in this embodiment may specifically include: The determining module 11 is configured to determine that the RLC status report needs to be sent to the secondary base station, and the sending module 12 is configured to send the RLC status report to the secondary base station when the preset RLC status report sending condition is met, and send the RLC status report to the primary base station. Send a PDCP status report.

 The determining module 11 is specifically configured to: when receiving the status report indication information sent by the secondary base station, determine that the RLC status report needs to be sent to the secondary base station; where the status report indication information is used to indicate the The user equipment 10 sends the RLC status report to the secondary base station; and/or detects that the RLC layer fails to receive data, and after the RLC entity's reordering timer expires, determines that the secondary base station needs to be sent to the secondary base station. An RLC status report; and/or, after the number of the sent RLC PDU data is greater than a preset value, determining that the RLC status report needs to be sent to the secondary base station; and/or, in the sent RLC PDU data After the number of bytes is greater than the preset value, it is determined that the RLC status report needs to be sent to the secondary base station.

 In an actual application, the status report indication information may be carried in the RLC data packet sent by the secondary base station to the user equipment 10; or may be sent to the user equipment 10 through a separate message, for example, by radio resource control (Radio Resource Control, referred to as The RRC message is sent to the user equipment 10, or sent to the user equipment 10 through a Medium Access Control (MAC) communication terminal (Communication Edge, CE for short), or sent to the user through physical layer signaling. The device 10 is not limited in this embodiment.

 It should be noted that, if the status report indication information is carried in a certain RLC data packet, if the related RLC PDU carrying the status report indication information is still in the stage of reordering timer detection, it needs to be delayed. The RLC status report is triggered only after the RLC PDU is received, and the RLC status is triggered after the re-transmission of the hybrid automatic repeat request (HQQ) of the RLC PDU. report.

 Further, the preset RLC status report sending condition may include that the RLC status report prohibits the timer from running; or the RLC status report prohibits the timer from being terminated.

Optionally, the sending module 12 is specifically configured to send, by the lower layer, the first transmission opportunity corresponding to the primary base station, to send, by the primary base station, the PDCP status report; or, at a lower layer, corresponding to the The preset transmission opportunity of the primary base station sends the PDCP status report to the primary base station; or, after transmitting the RLC status report to the secondary base station or after sending the RLC status report to the secondary base station Sending the PDCP status to the primary base station within a preset time Reporting; or, when receiving the status report indication information or receiving the status report indication information, sending the PDCP status report to the primary base station; or, when detecting the RLC The data reception of the layer fails, and the PDCP status report is sent to the primary base station after a reordering timer of the RLC entity times out or after a timeout period; or, after the PDCP status report delay timer expires, Sending the PDCP status report to the primary base station, where the PDCP status report delay timer is started when the user equipment 10 receives the status report indication information. This embodiment does not limit this.

 Further, the sending module 12 may be specifically configured to send the PDCP status report to the primary base station according to a latest PDCP data packet receiving status after the PDCP status report delay timer expires.

 As a possible implementation, the user equipment 10 may further include a processing module, configured to restart the PDCP status report delay timer after the PDCP status report is sent to a lower layer; or After the RLC status report, the PDCP status report delay timer is started.

 Specifically, the PDCP status report may specifically be a status report of the PDCP data packet sent by the user equipment 10 based on the secondary base station; or the user equipment 10 is based on the information sent by the secondary base station and the primary base station. A status report of the PDCP packet. The PDCP data packet is a PDCP PDU, or the PDCP data packet is a PDCP service data unit (SDU), which is not limited in this embodiment.

 Optionally, the status report of the PDCP data packet sent by the user equipment 10 based on the secondary base station is a data receiving status of the user equipment 10 based on the RLC layer between the user equipment 10 and the secondary base station. Or determining, according to the status report of the PDCP data packet sent by the user equipment 10 and the primary base station, that is, the user equipment 10 is based on the user equipment 10 and the secondary base station. a data receiving state of the RLC layer, and a data receiving state of the RLC layer between the user equipment 10 and the primary base station.

In another possible implementation, the user equipment 10 may further include a receiving module, configured to receive a first status report configuration message sent by the secondary base station, where the first status report configuration message is used to configure the The user equipment 10 sends the PDCP status report to the primary base station when the RLC status report is sent to the secondary base station; or the receiving module is configured to receive the second status report configuration message sent by the primary base station. The second status report configuration message is used to configure the location When the user equipment 10 sends the RLC status report to the secondary base station, the user equipment 10 sends the PDCP status report to the primary base station.

 It can be understood that the first status report configuration message and the second status report configuration message can be sent to the user equipment 10 through an RRC message, or sent to the user equipment 10 through the MAC CE, or sent through physical layer signaling. For the user equipment 10, this embodiment does not limit this.

 Further, the status report indication information may further include a retransmission identifier. Correspondingly, when the receiving module receives the status report indication information that is sent by the secondary base station and includes the retransmission identifier, the sending module 12 Retransmitting the PDCP status report to the primary base station. At this time, when receiving the status report indication information including the retransmission identifier, the user equipment 10 only needs to retransmit the PDCP status report to the primary base station, and does not need to resend the RLC status report to the secondary base station. .

 Optionally, the sending module 12 is further configured to send, to the secondary base station, second acknowledgement information, where the second acknowledgement information is used to notify the secondary base station, where the user equipment has sent the PDCP status report to The primary base station.

 The technical solution in this embodiment is determined by the determining module of the user equipment, and needs to be sent to the secondary base station.

The RLC status report, and when the preset RLC status report transmission condition is met, the sending module sends an RLC status report to the secondary base station, and sends a PDCP status report to the primary base station, so that the PDCP layer of the primary base station can know the user equipment in time. The receiving state of the PDCP data packet enables the transmission window of the primary base station to move in time, thereby increasing the rate of data transmission.

 FIG. 2 is a schematic structural diagram of Embodiment 1 of a base station according to the present invention. As shown in FIG. 2, the base station 20 provided in this embodiment may specifically include:

 The sending module 21 is configured to send a status report indication information notification message to the primary base station, where the status report indication information notification message is used to notify the primary base station, and the user equipment sends a PDCP status report to the primary base station;

 The receiving module 22 is configured to receive first acknowledgement information sent by the primary base station, where the first acknowledgement information is sent by the primary base station to the base station after receiving the PDCP status report sent by the user equipment. Or receiving the second acknowledgment information sent by the user equipment, where the second acknowledgment information is sent by the user equipment to the base station after sending the PDCP status report to the primary base station.

Further, the sending module 21 is further configured to: in the status report, indicate that the information retransmission timer is super If the receiving module does not receive the first acknowledgement information sent by the primary base station, retransmit the status report indication information to the user equipment, so that the user equipment sends the user equipment to the primary base station. Retransmitting the PDCP status report; or, if the secondary base station does not receive the second acknowledgement information sent by the user equipment, before the status report indicates that the information retransmission timer expires, the secondary base station The user equipment retransmits the status report indication information, so that the user equipment retransmits the PDCP status report to the primary base station.

 The status report indication information of the retransmission includes a retransmission identifier, so that the user equipment retransmits the PDCP status report to the primary base station.

 Further, the sending module 21 is further configured to send a first status report configuration message to the user equipment, where the first status report configuration message is used to configure the user equipment to send the RLC status to the base station 20. At the time of reporting, the PDCP status report is sent to the primary base station.

 In the technical solution of the embodiment, the sending module of the base station sends a status report indication information notification message to the primary base station for notifying the primary base station that the user equipment sends a PDCP status report to the primary base station, so that the receiving module of the primary base station receives the After the PDCP status report sent by the user equipment, the acknowledgment information is sent to the secondary base station, so that the secondary base station determines, according to the first acknowledgment information sent by the primary base station, the received status of the PDCP data packet by the user equipment that the PDCP layer of the primary base station knows in time.

 FIG. 3 is a schematic structural diagram of Embodiment 2 of a base station according to the present invention. As shown in FIG. 3, the base station 30 provided in this embodiment may specifically include:

 The receiving module 31 is configured to receive a PDCP status report sent by the user equipment, where the PDCP status report is sent by the user equipment to the base station 30 when the preset RLC status report sending condition is met;

 The sending module 32 is configured to send the first acknowledgement information to the secondary base station, where the first acknowledgement information is used to notify the secondary base station, and the base station 30 has received the PDCP status report sent by the user equipment.

 The PDCP status report may specifically be a status report of the PDCP data packet sent by the user equipment based on the secondary base station; or the user equipment is based on the PDCP data sent by the secondary base station and the base station 30. The status report of the package.

Further, the status report of the PDCP data packet is determined by the user equipment based on a data receiving state of an RLC layer between the user equipment and the secondary base station; or, the status report of the PDCP data packet is the user The device is based on the between the user equipment and the secondary base station The data reception status of the RLC layer and the data reception status of the RLC layer between the user equipment and the base station 30 are determined. The PDCP data packet is a PDCP PDU, or the PDCP data packet is a PDCP SDU. This embodiment does not limit this.

 In another possible implementation, the receiving module 31 is further configured to receive a status report indication information notification message sent by the secondary base station, where the status report indication information notification message is used to notify the base station 30, The user equipment will send the PDCP status report to the base station 30.

 In another possible implementation, the sending module 32 is further configured to send a second status report configuration message to the user equipment, where the second status report configuration message is used to configure the user equipment to When the secondary base station sends an RLC status report, the PDCP status report is fed back to the base station.

 The base station of the embodiment receives the PDCP status report sent by the user equipment by using the receiving module of the base station, and sends a first acknowledgement information to the secondary base station by the sending module, where the first acknowledgement information is used to notify the secondary base station. The base station has received the PDCP status report sent by the user equipment, so as to ensure that the PDCP layer of the base station can know the receiving status of the PDCP data packet by the user equipment in time, so that the sending window of the base station can move in time, thereby improving data transmission. rate.

 FIG. 4 is a flowchart of Embodiment 1 of a state feedback method in a dual connectivity mode according to the present invention. As shown in FIG. 4, the method in this embodiment may be specifically performed by a user equipment, and the method in this embodiment may specifically include:

 S101. The user equipment determines that an RLC status report needs to be sent to the secondary base station.

 In this step, the user equipment may determine that an RLC status report needs to be sent to the secondary base station by using at least one of the following manners:

 The user equipment may determine that the RLC status report needs to be sent to the secondary base station when receiving the status report indication information sent by the secondary base station, where the status report indication information is used to indicate that the user equipment is The secondary base station sends the RLC status report; and/or, the user equipment detects that the data reception of the RLC layer fails, and after the reordering timer of the RLC entity times out, determines that the foregoing needs to be sent to the secondary base station. The RLC status report; and/or, the user equipment determines that the RLC status report needs to be sent to the secondary base station after the number of the sent RLC PDU data is greater than a preset value; and/or, the user equipment After the number of bytes of the sent RLC PDU data is greater than a preset value, it is determined that the RLC status report needs to be sent to the secondary base station.

In an actual application, the status report indication information may be carried in the secondary base station and sent to the user equipment. The RLC data packet may be sent to the user equipment through a separate message, for example, sent to the user equipment through an RRC message, or sent to the user equipment through the MAC CE, or sent to the user equipment through physical layer signaling. Do not limit this.

 It should be noted that, if the status report indication information is carried in a certain RLC data packet, if the related RLC PDU carrying the status report indication information is still in the stage of reordering timer detection, it needs to be delayed. The RLC status report is triggered after the RLC PDU is received in the clear state. The gP needs to wait until the HARQ retransmission of the RLC PDU is complete before triggering the RLC status report.

 S102. The user equipment sends the RLC status report to the secondary base station when the preset RLC status report sending condition is met, and sends a PDCP status report to the primary base station.

 Specifically, the preset RLC status report sending condition may include that the RLC status report prohibits the timer from running; or the RLC status report prohibits the timer from being terminated.

 In this step, the sending, by the user equipment, the PDCP status report to the primary base station may include: sending, by the user equipment, the first transmission opportunity corresponding to the primary base station to the primary base station to send the PDCP status report to the primary base station; Or the user equipment sends the PDCP status report to the primary base station, where the user equipment indicates a preset transmission opportunity corresponding to the primary base station, or the user equipment sends the RLC to the secondary base station. The PDCP status report is sent to the primary base station at the same time as the status report or the preset time after the RLC status report is sent to the secondary base station; or the user equipment receives the status report indication information. Sending the PDCP status report to the primary base station within a preset time after receiving the status report indication information; or, the user equipment detects that the data reception of the RLC layer fails, and is in the RLC. Sending the PDCP status report to the primary base station after a timeout period of the entity is timed out or after a timeout; or After the PDCP status report delay timer expires, the user equipment sends the PDCP status report to the primary base station, where the PDCP status report delay timer is started when the user equipment receives the status report indication information. . This embodiment does not limit this.

 Specifically, the PDCP status report indicates that the UE receives status information of a PDCP PDU or a PDCP SDU, that is, which PDCP PDUs or PDCP SDUs are correctly received, and which PDCP PDUs or PDCP SDUs are not correctly received.

Further, after the PDCP status report delay timer expires, the user equipment sends the PDCP status report to the primary base station according to the latest PDCP data packet receiving status. Optionally, after the PDCP status report is sent to the lower layer, the user equipment restarts the PDCP status report delay timer; or, after the user equipment actively triggers sending the RLC status report, the user equipment The PDCP status report delay timer is started.

 It should be noted that the PDCP status report may specifically be a status report of the PDCP data packet sent by the user equipment based on the secondary base station; or, the user equipment is based on the information sent by the secondary base station and the primary base station. A status report of the PDCP packet. The PDCP data packet is a PDCP PDU, or the PDCP data packet is a PDCP SDU, which is not limited in this embodiment.

 Optionally, the status report of the PDCP data packet sent by the user equipment based on the secondary base station may be determined by the user equipment based on a data receiving state of the RLC layer between the user equipment and the secondary base station. Specifically, referring to FIG. 5, if the PDCP status report is a status report of the PDCP data packet sent by the user equipment based on the secondary base station, the first lost PDCP data packet in FIG. 5 is received by the user equipment. The first lost packet in the PDCP packet sent by the secondary base station.

 Optionally, the status report of the PDCP data packet sent by the user equipment based on the secondary base station and the primary base station may also be that the user equipment is based on the RLC between the user equipment and the secondary base station. a data receiving state of the layer, and a data receiving state of the RLC layer between the user equipment and the primary base station; specifically, referring to FIG. 5, if the PDCP status report is based on the user equipment a status report of the PDCP data packet sent by the secondary base station and the primary base station, where the first lost PDCP data packet in FIG. 5 is a PDCP data packet sent by the user equipment and sent by the primary base station and the secondary base station. The first lost packet.

 In addition, in the PDCP status report format of the format shown in FIG. 5, each bit (bit) of the bitmap sequentially indicates whether each PDCP packet after receiving the first lost packet is correctly received. For example, bitO can be used to indicate that a packet is not correctly received or decompressed, and bitl is used to indicate that a PDCP packet is correctly received. It can be understood that the length of the bitmap is equal to the number of all PDCP data packets starting from the first missing PDCP data packet until the last out-of-order PDCP data packet, wherein the length of the bitmap is not Contains the first lost packet, containing the last out-of-order packet.

Further, optionally, the status report indication information may further include a retransmission identifier. Correspondingly, the user equipment receives the status that is sent by the secondary base station and includes the retransmission identifier. When the indication information is reported, the PDCP status report is retransmitted to the primary base station. At this time, when receiving the status report indication information including the retransmission identifier, the user equipment may retransmit the PDCP status report only to the primary base station, and does not need to resend the RLC status report to the secondary base station.

 Optionally, after the user equipment sends the PDCP status report to the primary base station, the second acknowledgment information may be sent to the secondary base station, where the second acknowledgment information is used to notify the secondary base station, The user equipment has sent the PDCP status report to the primary base station.

 In the technical solution of the embodiment, the user equipment determines that the RLC status report needs to be sent to the secondary base station, and when the preset RLC status report transmission condition is met, sends an RLC status report to the secondary base station, and sends a PDCP status report to the primary base station. Therefore, the PDCP layer of the primary base station can timely know the receiving state of the user equipment for the PDCP data packet, thereby enabling the transmission window of the primary base station to move in time, thereby improving the data transmission rate.

 Further, as shown in FIG. 6, FIG. 6 is a flowchart of Embodiment 2 of the state feedback method in the dual connectivity mode of the present invention. On the basis of the foregoing embodiment, before the S101, the method provided in this embodiment may further include :

 S201: The user equipment receives a first status report configuration message sent by the secondary base station, where the first status report configuration message is used to configure the user equipment to send the RLC status report to the secondary base station. The primary base station sends the PDCP status report.

 It is to be understood that the first status report configuration message may be sent by the secondary base station to the user equipment through the RRC message, or sent to the user equipment by using the MAC CE, or sent to the user equipment by using physical layer signaling. Make restrictions.

 In the technical solution of the embodiment, the secondary base station pre-configures the user equipment by using the first status report configuration message. When the RLC status report is sent to the secondary base station, the PDCP status report needs to be sent to the primary base station, so that the user equipment is When the preset RLC status report transmission condition is met, the RLC status report is sent to the secondary base station, and the PDCP status report is sent to the primary base station, so that the PDCP layer of the primary base station can know the user equipment for the PDCP data packet in time. The receiving state, in turn, enables the transmission window of the primary base station to move in time, thereby increasing the rate of data transmission.

 Further, as shown in FIG. 7, FIG. 7 is a flowchart of Embodiment 3 of a state feedback method in a dual connectivity mode according to the present invention. On the basis of the foregoing embodiment, before the S101, the method provided in this embodiment may further include :

S301. The user equipment receives a second status report configuration message sent by the primary base station. The second status report configuration message is configured to configure the user equipment to send the foregoing to the secondary base station

When the RLC status is reported, the PDCP status report is sent to the primary base station.

 It is to be understood that the second status report configuration message may be sent by the primary base station to the user equipment through the RRC message, or sent to the user equipment by using the MAC CE, or sent to the user equipment by using physical layer signaling. Make restrictions.

 In the technical solution of the embodiment, the primary base station pre-configures the user equipment by using the second status report configuration message. When the RLC status report is sent to the secondary base station, the PDCP status report needs to be sent to the primary base station, so that the user equipment is When the preset RLC status report transmission condition is met, the RLC status report is sent to the secondary base station, and the PDCP status report is sent to the primary base station, so that the PDCP layer of the primary base station can know the user equipment for the PDCP data packet in time. The receiving state, in turn, enables the transmission window of the primary base station to move in time, thereby increasing the rate of data transmission.

 FIG. 8 is a flowchart of Embodiment 4 of a state feedback method in a dual connectivity mode according to the present invention. As shown in FIG. 8, the method in this embodiment may be specifically implemented by a secondary base station, and the method provided in this embodiment may specifically include:

 S401. The secondary base station sends a status report indication information notification message to the primary base station, where the status report indication information notification message is used to notify the primary base station, and the user equipment sends a PDCP status report to the primary base station.

 S402, the secondary base station receives the first acknowledgement information sent by the primary base station, where the first acknowledgement information is sent by the primary base station to the secondary base station after receiving the PDCP status report sent by the user equipment. Or the second base station receives the second acknowledgement information sent by the user equipment, where the second acknowledgement information is sent by the user equipment to the secondary base station after sending the PDCP status report to the primary base station. of.

 In the technical solution of the embodiment, the secondary base station sends a status report indication information notification message to the primary base station to notify the primary base station that the user equipment sends a PDCP status report to the primary base station, so that the primary base station receives the PDCP sent by the user equipment. After the status report, the first confirmation information is sent to the secondary base station, or the user equipment sends the second acknowledgement information to the secondary base station after transmitting the PDCP status report to the primary base station, so that the secondary base station is configured according to the primary base station. The first acknowledgement information sent or the second acknowledgement information sent by the user equipment determines the receiving status of the PDCP data packet by the user equipment that the PDCP layer of the primary base station knows in time.

FIG. 9 is a flowchart of Embodiment 5 of a state feedback method in a dual connectivity mode according to the present invention. Figure 9 As shown in the foregoing embodiment, after the S401, the method provided in this embodiment may further include:

 S501: Before the status report indicates that the information retransmission timer expires, if the secondary base station does not receive the first acknowledgement information sent by the primary base station, the secondary base station retransmits the status to the user equipment. Reporting information to enable the user equipment to retransmit the PDCP status report to the primary base station.

 In another implementation manner, before the status report indicates that the information retransmission timer expires, if the secondary base station does not receive the second acknowledgement information sent by the user equipment, the secondary base station sends the second acknowledgement information to the user. The device retransmits the status report indication information, so that the user equipment retransmits the PDCP status report to the primary base station.

 In this step, if the secondary base station does not receive the first acknowledgement information before the status report indicates that the information retransmission timer expires, the secondary base station may consider that the primary base station does not receive the PDCP status report, and the secondary base station is in the After the status report indicates that the information retransmission timer expires, the status report indication information is retransmitted to the user equipment.

 Specifically, the status report indication information of the retransmission includes a retransmission identifier, so that the user equipment retransmits the PDCP status report to the primary base station. That is, when receiving the status report indication information including the retransmission identifier, the user equipment only needs to retransmit the PDCP status report to the primary base station, and does not need to resend the RLC status report to the secondary base station. .

 In the technical solution of the embodiment, the secondary base station sends a status report indication information notification message to the primary base station to notify the primary base station that the user equipment sends a PDCP status report to the primary base station, so that the primary base station receives the PDCP sent by the user equipment. After the status report, the first confirmation information is sent to the secondary base station, or the user equipment sends the second acknowledgement information to the secondary base station after sending the PDCP status report to the primary base station, so that the secondary base station determines the primary base station. Whether the PDCP layer knows the receiving status of the PDCP data packet by the user equipment in time, and if the secondary base station determines that the user equipment of the primary base station does not know the receiving status of the PDCP data packet, the user equipment retransmits the status report indication information to the user equipment. So that the user equipment retransmits the PDCP status report to the primary base station. Therefore, the PDCP layer of the primary base station can timely know the receiving state of the user equipment for the PDCP data packet, thereby enabling the transmission window of the primary base station to move in time, thereby improving the data transmission rate.

FIG. 10 is a flowchart of Embodiment 6 of a state feedback method in a dual connectivity mode according to the present invention. As shown in FIG. 10, on the basis of the foregoing embodiment, before the S401, the method provided in this embodiment may also be To include:

 S601, the secondary base station sends a first status report configuration message to the user equipment, where the first status report configuration message is used to configure the user equipment to send the RLC status report to the secondary base station. The primary base station sends the PDCP status report.

 In the technical solution of the embodiment, the secondary base station pre-configures the user equipment by using the first status report configuration message. When sending the RLC status report to the secondary base station, the secondary base station also needs to send the PDCP status report to the primary base station, and send the PDCP status report to the primary base station. The status report indicates an information notification message, so that the primary base station sends an acknowledgement message to the secondary base station after receiving the PDCP status report sent by the user equipment, if the secondary base station does not receive the first acknowledgement before the status report indicates that the information retransmission timer expires. The second base station may determine that the primary base station does not receive the PDCP status report, and the secondary base station retransmits the status report indication to the user equipment after the status report indicates that the information retransmission timer expires. The information ensures that the PDCP layer of the primary base station can know the receiving state of the PDCP data packet by the user equipment in time, so that the transmission window of the primary base station can move in time, thereby improving the data transmission rate.

 FIG. 11 is a flowchart of Embodiment 7 of a state feedback method in a dual connectivity mode according to the present invention. As shown

As shown in FIG. 11, the method provided in this embodiment may be specifically performed by a primary base station, and the method provided in this embodiment may include:

 S701, the primary base station sends a second status report configuration message to the user equipment, where the second status report configuration message is used to configure the user equipment to send the RLC status report to the secondary base station. The base station feeds back the PDCP status report.

 S702: The primary base station receives a status report indication information notification message sent by the secondary base station, where the status report indication information notification message is used to notify the primary base station, and the user equipment sends the PDCP to the primary base station. status report.

 S703, the primary base station receives a PDCP status report sent by the user equipment, and the PDCP status report is sent by the user equipment to the primary base station when the preset RLC status report sending condition is met.

 In this step, the PDCP status report may specifically be a status report of the PDCP data packet sent by the user equipment based on the secondary base station; or the user equipment is sent by the user equipment based on the secondary base station and the primary base station. Status report of PDCP packets.

Specifically, the status report of the PDCP data packet is that the user equipment is based on the user equipment And determining, by the data receiving state of the RLC layer, between the secondary base station; or, the status report of the PDCP data packet is based on the RLC layer between the user equipment and the secondary base station a data reception status, and a data reception status of the RLC layer between the user equipment and the primary base station. The PDCP data packet is a PDCP PDU, or the PDCP data packet is a PDCP SDU. This embodiment does not limit this.

 S704. The primary base station sends first acknowledgement information to the secondary base station, where the first acknowledgement information is used to notify the secondary base station, and the primary base station has received the PDCP status report sent by the user equipment.

 In the technical solution of the embodiment, the primary base station sends a second status report configuration message to the user equipment, so that when the user equipment sends an RLC status report to the secondary base station, the user equipment feeds back the Receiving a status report indication information notification message sent by the secondary base station, and after receiving the PDCP status report sent by the user equipment, sending the first confirmation information to the secondary base station, where the first confirmation information is used for notification The secondary base station, the primary base station has received the PDCP status report sent by the user equipment. Therefore, it is ensured that the PDCP layer of the primary base station can know the receiving state of the PDCP data packet by the user equipment in time, thereby enabling the transmission window of the primary base station to move in time, thereby improving the data transmission rate.

 FIG. 12 is a signaling flowchart of Embodiment 8 of a state feedback method in a dual connectivity mode according to the present invention. As shown in FIG. 12, the method provided in this embodiment may specifically include:

 S801. The secondary base station sends status report indication information to the user equipment.

 S802. The secondary base station sends a status report indication information notification message to the primary base station.

 S803: The user equipment determines that an RLC status report needs to be sent to the secondary base station.

 S804: The user equipment sends an RLC status report to the secondary base station.

 S805. The user equipment sends a PDCP status report to the primary base station.

 S806. The primary base station sends a first acknowledgement message to the secondary base station.

In a practical application, when determining that the user equipment needs to send the RLC status report, the secondary base station sends status report indication information to the user equipment to indicate that the user equipment sends the RLC status report. Optionally, the secondary base station may also start the status report indication information retransmission timer when the status report indication information is sent to the user equipment. The secondary base station may carry the status report indication information in the RLC data packet sent to the user equipment, or may be sent to the user equipment through a separate message, for example, sent to the user equipment through an RRC message, or sent to the user equipment through the MAC CE. Or sent by physical layer signaling User equipment.

 It should be noted that, if the status report indication information is carried in a certain RLC data packet, if the related RLC PDU carrying the status report indication information is still in the stage of reordering timer detection, it needs to be delayed. The RLC status report is triggered only after the RLC PDU is received, and the RLC status report is triggered after the HARQ retransmission of the RLC PDU is completed.

 Specifically, when the status report indicates that the information is carried in an RLC data packet, the trigger mechanism for initiating the status report includes:

 When the sequence number of the RLC data packet carrying the status report indication information is X, if the RLC data packet is determined to be discarded, or if the data packet sequence number X < VR(MS) or x >= VR(MR) , then determine to trigger an RLC status report; otherwise, delay the trigger of the RLC status report until the condition is met: X < VR(MS) or x >= VR(MR). This ensures that the RLC status report is sent after HARQ reordering. Here, it is actually delayed until the reordering timer terminates, because VR (MS) is updated after the reordering timer expires.

 Here,

VR(MR) represents the value of the sequence number of the first RLC packet that exceeds the RLC receive window, which is the upper boundary of the receive window.

VR (MS) represents the value of the largest possible SN that can be indicated by "correct reception" when the RLC status report is constructed. The variable is in the RLC receive window, and the sequence number is lower than the RLC data of the variable, or has been received correctly, or has been identified as lost after being re-sequenced by the reordering timer. The received sequence number gap above the variable is the RLC PDU that is not waiting for the reception reordering timer to detect and is still waiting for HARQ retransmission. That is, the variable is the lower boundary corresponding to the reordering counter. Specifically, the secondary base station may trigger sending the status report indication information to the user equipment when the last data packet is sent; or, the secondary base station may trigger sending the status report indication information to the user equipment when the sending window overflows; or, the secondary base station may After the number of the sent RLC PDUs is greater than the preset value, the status report indication information is sent to the user equipment; or the secondary base station may send a status report to the user equipment after the number of the RLC PDUs sent is greater than the preset value. The indication information may be: or, the secondary base station may trigger sending the status to the user equipment after the status report indicates that the information retransmission timer expires. Report instructions. This embodiment does not limit this.

 Optionally, the secondary base station may further send a sending status report indication information notification message to the primary base station when the status report indication information is sent to the user equipment, so that the primary base station learns that the user equipment sends a PDCP status report to the primary base station. If the secondary base station does not receive the first acknowledgement information sent by the primary base station to notify the secondary base station before the status report indicates that the information retransmission timer expires, the primary base station receives the PDCP status report sent by the user equipment, or does not receive the user. The second acknowledgment information sent by the device, the secondary base station may send the status report indication information carrying the retransmission identifier to the user equipment again, so that the user equipment sends the PDCP status report to the primary base station again. It can be understood that after the user equipment recognizes the retransmission identifier, the PDCP status report is only retransmitted to the primary base station, and the RLC status report is not required to be retransmitted by the secondary base station.

 After receiving the status report indication information, the user equipment determines that an RLC status report needs to be sent to the secondary base station. Specifically, the user equipment, when receiving the status report indication information sent by the secondary base station, determines that the RLC status report needs to be sent to the secondary base station, where the status report indication information is used to indicate that the user equipment sends the RLC status report to the secondary base station; And/or, the user equipment detects that the data reception of the RLC layer fails, and after the reordering timer of the RLC entity times out, determines that the RLC status report needs to be sent to the secondary base station; and/or, the user equipment is transmitting the RLC PDU data. After the quantity is greater than the preset value, it is determined that the RLC status report needs to be sent to the secondary base station; and/or, after the number of bytes of the sent RLC PDU data is greater than the preset value, the user equipment determines that the RLC status report needs to be sent to the secondary base station. This embodiment does not limit this.

 After determining that the RLC status report needs to be sent to the secondary base station, the user equipment sends an RLC status report to the secondary base station and sends a PDCP status report to the primary base station when the preset RLC status report transmission condition is met.

 It should be noted that the preset RLC status report sending condition may include the RLC status report prohibiting the timer from running; or the RLC status report prohibiting the timer from being terminated.

Specifically, the user equipment sends a PDCP status report to the primary base station in the lower layer indicating the first transmission opportunity corresponding to the primary base station; or the user equipment sends the PDCP to the primary base station in the lower layer indicating the preset transmission opportunity corresponding to the primary base station. If the user equipment sends the RLC status report to the secondary base station or sends the RLC status report to the secondary base station, the PDCP status report is sent to the primary base station; or the user equipment receives the status report indication. Sending a PDCP status report to the primary base station within a preset time after the information or after receiving the status report indication information; Or, the user equipment detects that the data reception of the RLC layer fails, and sends a PDCP status report to the primary base station after the reordering timer of the RLC entity expires or after a timeout; or, the user equipment reports in the PDCP status. After the delay timer expires, the PDCP status report is sent to the primary base station, where the PDCP status report delay timer is started when the user equipment receives the status report indication information. This embodiment does not limit this.

 The PDCP status report may be a status report of the PDCP data packet sent by the user equipment based on the secondary base station; or the user equipment reports the status of the PDCP data packet sent by the secondary base station and the primary base station. The PDCP data packet is a PDCP PDU, or the PDCP data packet is a PDCP SDU, which is not limited in this embodiment.

 Optionally, the status report of the PDCP data packet sent by the user equipment based on the secondary base station may be determined by the user equipment based on a data receiving state of the RLC layer between the user equipment and the secondary base station; or the user equipment is based on the PDCP sent by the secondary base station and the primary base station. The status report of the data packet may also be determined by the user equipment based on the data reception status of the RLC layer between the user equipment and the secondary base station, and the data reception status of the RLC layer between the user equipment and the primary base station.

 It should be noted that, if the PDCP status report delay timer is enabled on the user equipment, after receiving the status report indication information sent by the secondary base station, the user equipment must send the PDCP to the primary base station after the PDCP status report delay timer expires. The status report, for example, after the PDCP status report delay timer expires, the user equipment sends a PDCP status report to the primary base station according to the latest PDCP data packet reception status. After the PDCP status report is sent to the lower layer, the user equipment restarts the PDCP status report delay. Timer. If the user equipment actively triggers the sending of the RLC status report, the user equipment starts the PDCP status report delay timer.

 After receiving the PDCP status report sent by the user equipment, the primary base station may determine that the user equipment has correctly received the PDCP data packet, and then performs sliding of the PDCP layer transmission window; on the other hand, it may be determined that the secondary base station needs to be retransmitted again. The PDCP PDU is then sent again to the secondary base station for transmission.

 It should be noted that, whether the user equipment needs to send a PDCP status report to the primary base station when sending the RLC status report to the secondary base station, the secondary base station may report the configuration message by using the first status, or may be configured by the primary base station by using the second status report. The message is configured.

The technical solution of the embodiment can enable the PDCP layer of the primary base station to know the receiving state of the PDCP data packet by the user equipment in time, and then enable the sending window of the primary base station to move in time. The rate of high data transfer.

 In the several embodiments provided by the present invention, it should be understood that the disclosed apparatus and method may be implemented in other manners. For example, the device embodiments described above are merely illustrative. For example, the division of the unit is only a logical function division. In actual implementation, there may be another division manner, for example, multiple units or components may be combined or Can be integrated into another system, or some features can be ignored, or not executed. In addition, the mutual coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection through some interface, device or unit, and may be electrical, mechanical or otherwise.

 The units described as separate components may or may not be physically separate, and the components displayed as units may or may not be physical units, that is, may be located in one place, or may be distributed to multiple network units. Some or all of the units may be selected according to actual needs to achieve the objectives of the solution of the embodiment.

 In addition, each functional unit in each embodiment of the present invention may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit. The above integrated unit can be implemented in the form of hardware or in the form of hardware plus software functional units.

 The above-described integrated unit implemented in the form of a software functional unit can be stored in a computer readable storage medium. The software functional unit is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) or a processor to perform the method of various embodiments of the present invention. Part of the steps. The foregoing storage medium includes: a U disk, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk, and the like, which can store program code. .

 A person skilled in the art can clearly understand that for the convenience and brevity of the description, only the division of each functional module described above is exemplified. In practical applications, the above function assignment can be completed by different functional modules as needed, that is, the device is installed. The internal structure is divided into different functional modules to perform all or part of the functions described above. For the specific working process of the device described above, refer to the corresponding process in the foregoing method embodiment, and details are not described herein again.

Finally, it should be noted that the above embodiments are only for explaining the technical solutions of the present invention, and are not limited thereto; although the present invention has been described in detail with reference to the foregoing embodiments, The skilled person should understand that the technical solutions described in the foregoing embodiments may be modified, or some or all of the technical features may be equivalently replaced; and the modifications or substitutions do not deviate from the essence of the corresponding technical solutions. The scope of the technical solutions of the various embodiments.

Claims

claims 1. A user equipment, characterized by: including: The determining module is used to determine the need to send the radio link control RLC status report to the secondary base station; the sending module is used to send the RLC status report to the secondary base station when the preset RLC status report sending conditions are met, and send the RLC status report to the secondary base station. The master base station sends a Packet Data Convergence Protocol PDCP status report. 2. The user equipment according to claim 1, characterized in that the determining module is specifically used to: When receiving the status report indication information sent by the secondary base station, it is determined that the RLC status report needs to be sent to the secondary base station; wherein the status report indication information is used to instruct the user equipment to send the RLC status report to the secondary base station. Described RLC status report; and/or It is detected that the data reception failure of the RLC layer fails, and after the reordering timer of the RLC entity times out, it is determined that the RLC status report needs to be sent to the secondary base station. 3. The user equipment according to claim 1 or 2, characterized in that the determining module is also used to: After the number of RLC PDU data sent is greater than the preset value, it is determined that the RLC status report needs to be sent to the secondary base station; and/or After the number of bytes of the sent RLC PDU data is greater than the preset value, it is determined that the RLC status report needs to be sent to the secondary base station. 4. The user equipment according to claim 1, wherein the preset RLC status report sending conditions include: The RLC status reporting inhibit timer is not running; or, The RLC status reporting inhibit timer expires. 5. The user equipment according to any one of claims 1 to 4, characterized in that, the user equipment further includes: A receiving module, configured to receive a first status report configuration message sent by the secondary base station; the first status report configuration message is used to configure the user equipment to send the RLC status report to the secondary base station when sending the RLC status report to the secondary base station. The primary base station sends the PDCP status report; or The receiving module is configured to receive a second status report configuration message sent by the primary base station. The second status report configuration message is used to configure the user equipment to send the RLC status report to the secondary base station. The main base station sends the PDCP status report. 6. The user equipment according to claim 1 or 5, characterized in that the sending module is specifically used for: Send the PDCP status report to the main base station at the first transmission opportunity indicated by the lower layer corresponding to the main base station; or, Send the PDCP status report to the main base station at the preset transmission opportunity indicated by the lower layer corresponding to the main base station; or, Send the PDCP status report to the primary base station while sending the RLC status report to the secondary base station or within a preset time after sending the RLC status report to the secondary base station; or, When receiving the status report indication information or within a preset time after receiving the status report indication information, send the PDCP status report to the main base station; or, After detecting that the data reception failure of the RLC layer fails, and after the reordering timer of the RLC entity times out or within a preset time after timeout, send the PDCP status report to the main base station; or, After the PDCP status report delay timer times out, the PDCP status report is sent to the main base station. 7. The user equipment according to claim 6, wherein the sending module is specifically configured to send the latest PDCP data packet reception status to the main base station after the PDCP status report delay timer times out. Describes the PDCP status report. 8. The user equipment according to claim 7, characterized in that, the user equipment further includes a processing module; configured to restart the PDCP status report delay timer after the PDCP status report is sent to the lower layer; or, After actively triggering the sending of the RLC status report, the PDCP status report delay timer is started. 9. The user equipment according to any one of claims 6-8, characterized in that the PDCP status report delay timer is started when the user equipment receives the status report indication information. 10. The user equipment according to any one of claims 1 to 9, characterized in that the PDCP status report is specifically: The user equipment is based on a status report of the PDCP data packet sent by the secondary base station; or, the user equipment is based on a status report of the PDCP data packet sent by the secondary base station and the primary base station. 11. The user equipment according to claim 10, characterized in that, the status report of the user equipment based on the PDCP data packet sent by the secondary base station is the status report of the user equipment based on the communication between the user equipment and the secondary base station. The data reception status of the RLC layer is determined; or The status report of the user equipment based on the PDCP data packet sent by the secondary base station and the primary base station is the data reception status of the user equipment based on the RLC layer between the user equipment and the secondary base station. , and the data reception status of the RLC layer between the user equipment and the main base station is determined. 12. The user equipment according to claim 11, characterized in that the PDCP data packet is a PDCP PDU, or the PDCP data packet is a PDCP service data unit SDU. 13. The user equipment according to any one of claims 2 to 12, characterized in that the status report indication information contains a retransmission identifier; correspondingly, the receiving module receives the message sent by the secondary base station containing the When retransmitting the status report indication information of the identifier, the sending module retransmits the PDCP status report to the main base station. 14. The user equipment according to any one of claims 1 to 13, characterized in that the sending module is further configured to send second confirmation information to the secondary base station, and the second confirmation information is used to notify the secondary base station. Base station, the user equipment has sent the PDCP status report to the main base station. 15. A base station, characterized by including: A sending module, configured to send a status report indication information notification message to the main base station, where the status report indication information notification message is used to notify the main base station that the user equipment will send a packet data convergence protocol PDCP status report to the main base station; A receiving module, configured to receive the first confirmation information sent by the main base station, where the first confirmation information is sent by the main base station to the base station after receiving the PDCP status report sent by the user equipment; Or, receive second confirmation information sent by the user equipment, where the second confirmation information is sent by the user equipment to the base station after sending the PDCP status report to the main base station. 16. The base station according to claim 15, wherein the sending module is further configured to: before the status report indication information retransmission timer times out, if the receiving module does not receive all the information sent by the main base station. If the first confirmation information is received, the status report indication information is retransmitted to the user equipment, so that the user equipment retransmits the PDCP status report to the master base station; or the status report indication information is retransmitted after Before the timer expires, if the secondary base station does not receive If the second confirmation information is sent by the user equipment, the secondary base station retransmits the status report indication information to the user equipment, so that the user equipment retransmits the PDCP status report to the primary base station. . 17. The base station according to claim 16, wherein the retransmitted status report indication information includes a retransmission identifier, so that the user equipment retransmits the PDCP status report to the main base station. . 18. The base station according to any one of claims 15 to 17, characterized in that: the sending module is further configured to send a first status report configuration message to the user equipment, and the first status report configuration message is used to configure When the user equipment sends the RLC status report to the base station, the user equipment sends the PDCP status report to the master base station. 19. A base station, characterized by including: A receiving module, configured to receive a Packet Data Convergence Protocol PDCP status report sent by the user equipment; the PDCP status report is sent by the user equipment to the base station when the preset RLC status report sending conditions are met; A sending module, configured to send first confirmation information to the secondary base station, where the first confirmation information is used to notify the secondary base station that the base station has received the PDCP status report sent by the user equipment. 20. The base station according to claim 19, characterized in that the PDCP status report is specifically: The user equipment is based on a status report of the PDCP data packet sent by the secondary base station; or, the user equipment is based on a status report of the PDCP data packet sent by the secondary base station and the base station. 21. The base station according to claim 20, wherein the status report of the PDCP data packet is determined by the user equipment based on the data reception status of the RLC layer between the user equipment and the secondary base station; or The status report of the PDCP data packet is the data reception status of the user equipment based on the RLC layer between the user equipment and the secondary base station, and the RLC between the user equipment and the base station. The data receiving status of the layer is determined. 22. The base station according to claim 21, wherein the PDCP data packet is a PDCP PDU, or the PDCP data packet is a PDCP service data unit SDU. 23. The base station according to any one of claims 19 to 22, wherein the receiving module is further configured to receive a status report indication information notification message sent by the secondary base station, and the status report indication information notification message is used to Notify the base station that the user equipment will send the PDCP status report to the base station. 24. The base station according to claim 23, wherein the sending module is further configured to send a second status report configuration message to the user equipment, and the second status report configuration message is used to configure the user equipment. When sending a radio link control RLC status report to the secondary base station, the PDCP status report is fed back to the base station. 25. A state feedback method in dual connection mode, characterized by: including: The user equipment determines that it needs to send a radio link control RLC status report to the secondary base station; when the user equipment meets the preset RLC status report sending conditions, the user equipment sends the RLC status report to the secondary base station and sends a packet to the primary base station. Data Convergence Protocol PDCP status report. 26. The method according to claim 25, wherein the user equipment determines that it needs to send an RLC status report to the secondary base station, including: When the user equipment receives the status report indication information sent by the secondary base station, it determines that it is necessary to send the RLC status report to the secondary base station; wherein, the status report indication information is used to instruct the user equipment to send the RLC status report to the secondary base station. The secondary base station sends the RLC status report; and/or The user equipment detects that data reception at the RLC layer fails, and after the reordering timer of the RLC entity times out, it is determined that the RLC status report needs to be sent to the secondary base station. 27. The method according to claim 25 or 26, wherein the user equipment determines that it needs to send an RLC status report to the secondary base station, and further includes: After the number of RLC PDU data sent is greater than the preset value, the user equipment determines that it needs to send the RLC status report to the secondary base station; and/or After the number of bytes of the sent RLC PDU data is greater than a preset value, the user equipment determines that it needs to send the RLC status report to the secondary base station. 28. The method according to claim 25, characterized in that the preset RLC status report sending conditions include: The RLC status reporting inhibit timer is not running; or, The RLC status reporting inhibit timer expires. 29. The method according to any one of claims 25-28, characterized in that: the user equipment Before determining that the RLC status report needs to be sent to the secondary base station, it also includes: The user equipment receives a first status report configuration message sent by the secondary base station; the first status report configuration message is used to configure the user equipment to send the RLC status report to the secondary base station when sending the RLC status report to the secondary base station. The main base station sends the PDCP status report; or The user equipment receives a second status report configuration message sent by the primary base station. The second status report configuration message is used to configure the user equipment to send the RLC status report to the secondary base station when sending the RLC status report to the secondary base station. The main base station sends the PDCP status report. 30. The method according to claim 25 or 28, characterized in that sending a PDCP status report to the main base station includes: The user equipment sends the PDCP status report to the main base station at the first transmission opportunity indicated by the lower layer corresponding to the main base station; or, The user equipment sends the PDCP status report to the main base station at the preset transmission opportunity indicated by the lower layer corresponding to the main base station; or, The user equipment sends the PDCP status report to the primary base station while sending the RLC status report to the secondary base station or within a preset time after sending the RLC status report to the secondary base station; or , The user equipment sends the PDCP status report to the main base station when receiving the status report indication information or within a preset time after receiving the status report indication information; or, the user equipment detects Data reception to the RLC layer fails, and the PDCP status report is sent to the main base station after the reordering timer of the RLC entity times out or within a preset time after timeout; or, After the PDCP status report delay timer times out, the user equipment sends the PDCP status report to the main base station. 31. The method according to claim 30, characterized in that, after the PDCP status report delay timer times out, the user equipment sends the PDCP status report to the main base station, including: after the PDCP status report delay timer expires, After the timer times out, the user equipment sends the PDCP status report to the main base station according to the latest PDCP data packet reception status. 32. The method of claim 31, further comprising: After the PDCP status report is sent to the lower layer, the user equipment restarts the PDCP status report delay timer; or After the user equipment actively triggers sending of the RLC status report, the user equipment starts the PDCP status report delay timer. 33. The method according to any one of claims 30 to 32, characterized in that the PDCP status report delay timer is started when the user equipment receives the status report indication information. 34. The method according to any one of claims 25-33, characterized in that the PDCP status report is specifically: The user equipment is based on a status report of the PDCP data packet sent by the secondary base station; or, the user equipment is based on a status report of the PDCP data packet sent by the secondary base station and the primary base station. 35. The method according to claim 34, wherein the status report of the user equipment based on the PDCP data packet sent by the secondary base station is based on the status report between the user equipment and the secondary base station. The data reception status of the RLC layer during the period is determined; or The status report of the user equipment based on the PDCP data packet sent by the secondary base station and the primary base station is the data reception status of the user equipment based on the RLC layer between the user equipment and the secondary base station. , and the data reception status of the RLC layer between the user equipment and the main base station is determined. 36. The method according to claim 35, characterized in that the PDCP data packet is a PDCP PDU, or the PDCP data packet is a PDCP service data unit SDU. 37. The method according to any one of claims 26 to 36, characterized in that the status report indication information contains a retransmission identifier; correspondingly, the user equipment receives the retransmission identifier sent by the secondary base station and contains the retransmission identifier. When the status report indication information of the identifier is transmitted, the PDCP status report is retransmitted to the main base station. 38. The method according to any one of claims 25 to 37, characterized in that, after the user equipment sends the PDCP status report to the main base station, it further includes: The user equipment sends second confirmation information to the secondary base station, and the second confirmation information is used to notify the secondary base station that the user equipment has sent the PDCP status report to the primary base station. 39. A state feedback method in dual connection mode, characterized by including: The secondary base station sends a status report indication information notification message to the primary base station. The status report indication information notification message is used to notify the primary base station that the user equipment will send a packet data convergence protocol PDCP status report to the primary base station; The secondary base station receives the first confirmation information sent by the primary base station, and the first confirmation information is sent by the primary base station to the secondary base station after receiving the PDCP status report sent by the user equipment; Alternatively, the secondary base station receives the second confirmation information sent by the user equipment, and the second confirmation information is sent by the user equipment to the secondary base station after sending the PDCP status report to the primary base station. 40. The method according to claim 39, characterized in that, after the secondary base station sends the status report indication information notification message to the primary base station, it further includes: Before the status report indication information retransmission timer times out, if the secondary base station does not receive the first confirmation information sent by the primary base station, the secondary base station retransmits the status report indication to the user equipment. information, so that the user equipment retransmits the PDCP status report to the main base station; or Before the status report indication information retransmission timer times out, if the secondary base station does not receive the second confirmation information sent by the user equipment, the secondary base station retransmits the status report indication to the user equipment. information, so that the user equipment retransmits the PDCP status report to the main base station. 41. The method according to claim 40, wherein the retransmitted status report indication information includes a retransmission identifier, so that the user equipment retransmits the PDCP status report to the main base station. . 42. The method according to any one of claims 39 to 41, characterized in that before the secondary base station sends the status report indication information notification message to the primary base station, it further includes: The secondary base station sends a first status report configuration message to the user equipment. The first status report configuration message is used to configure the user equipment to send the RLC status report to the primary base station when sending the RLC status report to the secondary base station. The base station sends the PDCP status report. 43. A state feedback method in dual connection mode, characterized by including: The main base station receives the Packet Data Convergence Protocol PDCP status report sent by the user equipment; as described The PDCP status report is sent by the user equipment to the main base station when it meets the preset RLC status report sending conditions; The primary base station sends first confirmation information to the secondary base station, and the first confirmation information is used to notify the secondary base station that the primary base station has received the PDCP status report sent by the user equipment. 44. The method according to claim 43, wherein the PDCP status report is specifically: The user equipment is based on a status report of the PDCP data packet sent by the secondary base station; or, the user equipment is based on a status report of the PDCP data packet sent by the secondary base station and the primary base station. 45. The method according to claim 44, wherein the status report of the PDCP data packet is determined by the user equipment based on the data reception status of the RLC layer between the user equipment and the secondary base station; or The status report of the PDCP data packet is the data reception status of the user equipment based on the RLC layer between the user equipment and the secondary base station, and the data reception status between the user equipment and the primary base station. The data reception status of the RLC layer is determined. 46. The method according to claim 45, wherein the PDCP data packet is a PDCP PDU, or the PDCP data packet is a PDCP service data unit SDU. 47. The method according to any one of claims 43 to 46, characterized in that, before the main base station receives the PDCP status report sent by the user equipment, it further includes: The primary base station receives the status report indication information notification message sent by the secondary base station. The status report indication information notification message is used to notify the primary base station that the user equipment will send the PDCP status report to the primary base station. . 48. The method according to claim 47, characterized in that, before the primary base station receives the status report indication information notification message sent by the secondary base station, it further includes: The primary base station sends a second status report configuration message to the user equipment. The second status report configuration message is used to configure the user equipment to send a radio link control RLC status report to the secondary base station. The primary base station feeds back the PDCP status report.