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Data deleting method, data synchronizing method, transceiving terminal, electronic equipment and storage medium

A data synchronization and deletion method technology, which is applied in the direction of synchronization devices, electrical components, wireless communication, etc., can solve the problems that the memory cannot be released in time, affects the confirmation speed of the peer RLC, and reduces the effective value of T-Put, etc.

Active Publication Date: 2021-01-15
SPREADTRUM SEMICON (NANJING) CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is to overcome the problem in the prior art that in the PDCP duplication scenario, the RLC will only actively delete the data packets that have not been assembled into RLC PDUs and will not delete the data packets that have been assembled, thus causing memory loss. It can not be released in time, which affects the actual performance. It also overcomes the defect that in the existing technology, in the PDCP duplication scenario, the RLC will only reply to the peer ACK after receiving the data, which will affect the confirmation speed of the peer RLC. At the same time, it may introduce Additional air interface repeated packet retransmission, reducing the defect of effective value of T-Put, providing a data deletion and synchronization method and sending and receiving terminals, electronic equipment and storage media

Method used

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  • Data deleting method, data synchronizing method, transceiving terminal, electronic equipment and storage medium
  • Data deleting method, data synchronizing method, transceiving terminal, electronic equipment and storage medium
  • Data deleting method, data synchronizing method, transceiving terminal, electronic equipment and storage medium

Examples

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Effect test

Embodiment 1

[0098] According to the existing technology, RLC will only actively delete data packets that have not been assembled into RLC PDUs. This is correct and reasonable in non-duplication scenarios, but when the duplication function is enabled, because the peer PDCP has already received it, so In some cases, it can actually be deleted. For example, the MAC has received the ACK, but the status report cannot be received in time due to the status report prohibit timer (prohibited timer) or other reasons. The confirmation of the status report will definitely be received. Therefore, in this scenario, RLC can discard the corresponding PDUs that have been packaged.

[0099] Based on the above considerations, this embodiment provides a data deletion method applied to the PDCP duplication scenario at the originating end, so that in the PDCP duplication scenario, when the MAC has received the ACK, even if the status report has not been received, it can also delete the data. PDCP PDUs that ha...

Embodiment 2

[0170] This embodiment provides a sending terminal, which is used to delete data in a PDCP duplication scenario. Such as Figure 5 As shown, the sending terminal includes:

[0171] The data deletion module 51 is configured to, in the PDCP duplication scenario, when the RLC receives a deletion instruction from the PDCP, if the PDCP PDU indicated by the deletion instruction has been assembled into an RLC PDU, then according to the RLC PDU in the air interface Determine whether to delete the PDCP PDU instructed to be deleted based on the current transmission status of the PDU.

[0172] In this embodiment, according to the current transmission state of the RLC PDU on the air interface, it is judged whether to delete the PDCP PDU instructed to be deleted, which may specifically include:

[0173] After all the MAC HARQ processes related to the PDCP PDU instructed to be deleted have received ACK or NACK reaching the maximum number of retransmissions, a deletion operation is perform...

Embodiment 3

[0186] This embodiment provides a sending terminal, which is used to perform data synchronization in a PDCP duplication scenario. Such as Figure 6 As shown, the sending terminal includes:

[0187] Data synchronization module 61, comprising:

[0188] The synchronization indication unit 611 is used to implement at the RLC layer:

[0189] Determine whether it is currently protected by the Pbit prohibit timer;

[0190] If it is not within the protection of the Pbit prohibit timer, the RLC actively triggers the RLC PDU carrying the Pbit to be sent to the peer end, instructs the peer end to reply to the status report, and notifies the peer end to synchronize the state variables with the PDCP;

[0191] If it is within the protection of the Pbit prohibit timer, the RLC waits for the Pbit prohibit timer to expire and then actively triggers the RLC PDU carrying the Pbit to be sent to the peer end, instructs the peer end to reply a status report, and notifies the peer end to synchron...

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Abstract

The invention discloses a data deleting method, a data synchronizing method, a transceiving terminal, electronic equipment and a storage medium. The data deleting method is applied to a sending end, and comprises the following steps: in a PDCP duplication scene, when RLC receives a deletion instruction sent by PDCP, if the PDCP PDU instructed to be deleted by the deletion instruction is assembledinto the RLC PDU, determining whether to delete the PDCP PDU instructed to be deleted according to the current transmission state of the RLC PDU in an air interface. In view of some special constraints under the current PDCP duplication function, a discard mechanism and an opposite-terminal reply state report mechanism under an existing protocol framework are optimized, and it is guaranteed that on the premise that the reliability of air interface transmission is not changed, extra invalid repeated packets are prevented from appearing in an air interface, meanwhile, an extra memory is not occupied, and certain influences are not generated on the performance.

Description

technical field [0001] The invention belongs to the field of wireless communication, and in particular relates to a data deletion and synchronization method, a transceiver terminal, electronic equipment and a storage medium. Background technique [0002] In order to obtain higher throughput and lower delay at the access network level, LTE (Long Term Evolution, wireless data communication technology standard) design EN-DC (E-UTRA and NR dual connectivity connected to LTE EPC) method To share the access network resources of NR (New Radio, new air interface), so as to obtain higher transmission rate and reliability. At the same time, the PDCP duplication (PDCP repetition function, Packet Data Convergence Protocol, packet data convergence protocol) function is designed in a targeted manner. This function requires that a data packet can be transmitted on the primary and secondary connections at the same time, and at the same time be confirmed on the opposite side of the PDCP / RLC...

Claims

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Application Information

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IPC IPC(8): H04W28/02H04W28/06H04W56/00
CPCH04W28/0205H04W28/0278H04W28/065H04W56/001
Inventor 胡世镔毛兵成安静
Owner SPREADTRUM SEMICON (NANJING) CO LTD
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