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Data sending method and device, receiving end, communication system, equipment and medium

A data sending method and a technology of a data sending device, which are applied in the communication field, can solve problems such as failure, HFN mismatch decryption between the sending end and the receiving end, and achieve the effect of avoiding decryption failure

Active Publication Date: 2020-10-30
RDA MICROELECTRONICS TECH SHANGHAI CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0012] Aiming at the deficiencies of the above-mentioned prior art, the object of the present invention is to provide a data sending method, device, receiving end, communication system, equipment and medium to solve the above-mentioned problems caused by the mismatch of HFN between the sending end and the receiving end due to serious packet loss. Decryption failure problem, improve user experience

Method used

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  • Data sending method and device, receiving end, communication system, equipment and medium
  • Data sending method and device, receiving end, communication system, equipment and medium
  • Data sending method and device, receiving end, communication system, equipment and medium

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0063] This embodiment provides a data sending method, which is suitable for the sending end of the LTE / NR system, such as Figure 5 with 5A As shown, the method includes the following steps:

[0064] S20. After receiving the TCP / IP packet, pack the TCP / IP packet into a PDCP PDU to be sent according to the PDCP protocol, and start a discard timer at the same time. Wherein, the timing duration of the discarding timer is preset according to actual requirements.

[0065] S21. Send the PDCP PDU to be sent to the RLC layer, and start a discard timer (discard timer).

[0066] S22. When the discard timer expires, detect whether the PDCP PDU to be sent has been grouped at the RLC layer (that is, whether the PDCP PDU has been grouped into an RLC PDU by the RLC).

[0067] S23. If the PDCP PDU to be sent has not been grouped at the RLC layer when the discard timer expires, discard the PDCP PDU to be sent.

[0068] S24. Count the number of currently discarded PDCP PDUs continuously. ...

Embodiment 2

[0082] This embodiment provides a data sending device, such as Figure 7 As shown, the device 3 includes:

[0083] The PDCP grouping module is used to group the TCP / IP packets into PDCP PDUs to be sent according to the DPCP protocol after receiving the TCP / IP packets, and simultaneously start a discard timer;

[0084] The sending module 31 is configured to send the PDCP PDU to be sent to the RLC layer, and start a discard timer (discard timer). In this embodiment, the sending module 31 adopts Figure 5A The flow shown sends the PDCP PDU, and the specific process refers to Embodiment 1.

[0085] The detection module 32 is configured to detect whether the PDCP PDU has been grouped at the RLC layer (that is, whether the PDCP PDU has been grouped into an RLC PDU by the RLC) when the discard timer expires.

[0086] A discarding module 33, configured to discard the PDCP PDU to be sent when the detection module 32 detects that the PDCP PDU to be sent has not been grouped at the RL...

Embodiment 3

[0095] This embodiment provides a sending end, wherein the sending end includes the data sending device 3 in Embodiment 2.

[0096] In this embodiment, by integrating the data sending device 3 of Embodiment 2 in the sending end, the synchronization between the HFN at the sending end and the HFN at the receiving end can be maintained, and decryption failure can be avoided.

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PUM

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Abstract

The invention discloses a data sending method and device, a receiving end, a communication system, equipment and a medium. The method comprises the steps that: a TCP / IP packet is packaged into to-be-sent PDCP PDUs after the TCP / IP packet is received, and a discarding timer is started; the to-be-sent PDCP PDUs are sent to an RLC layer; when the timing of the discarding timer is overtime, if the PDCP PDUs do not perform packet assembling operation on the RLC layer, the PDCP PDUs are discarded; the number of PDCP PDUs which are continuously discarded at present is calculated; whether the number of the PDCP PDUs which are continuously discarded reaches a preset threshold value or not is judged, the threshold value is not larger than 2^ (SN bit size-1)-1, and SN bit size represents the number of bits occupied by a serial number SN of the PDCP PDUs; and when the number of the continuously discarded PDCP PDUs reaches the threshold value, the discarding the next to-be-sent PDCP PDU is stoppedno matter whether the next to-be-sent PDCP PDU is grouped in the RLC layer within the timing length of the discarding timer. According to the data sending method and device, the receiving end, the communication system, the equipment and the medium of the invention, the problem of decryption failure caused by mismatching of the HFN of the sending end and the receiving end due to serious packet losscan be solved, and the user experience is improved.

Description

technical field [0001] The present invention relates to the communication field, in particular to a data sending method, device, receiving end, communication system, equipment and medium. Background technique [0002] In the existing LTE (Long Term Evolution, long-term evolution) and NR (New Radio, new air interface) systems and possible future communication systems, in order to ensure that the data transmitted through the air interface can be sequentially delivered to the application layer at the receiving end , so the method of assigning serial numbers for data packets is adopted at the sending end, that is, at the PDCP (Packet Data Convergence Protocol, packet data convergence protocol) layer, the order of the PDCP PDU (Packet Data Unit, protocol data unit) data packets to be sent is the data packet Assign the count value (COUNT). The count value includes two parts: a high-order hyperframe number (HFN, Hyper Frame Number) and a low-order serial number (SN, Sequence Numbe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/823H04L29/06H04L47/32
CPCH04L47/32H04L63/0428
Inventor 康书杰
Owner RDA MICROELECTRONICS TECH SHANGHAI CO LTD