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Method and system for receiving PDCP packets

A receiving method and receiving system technology, applied in the field of receiving PDCP data packets, can solve problems such as data packet discarding and affecting service rate, and achieve the effects of preventing mutations, improving robustness, and improving experience

Active Publication Date: 2019-06-11
COMBA TELECOM SYST CHINA LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In the traditional technical solution, when the bottom layer suddenly introduces abnormal malformed packets in the normal business process, a large number of received data packets will be discarded, affecting the business rate

Method used

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  • Method and system for receiving PDCP packets
  • Method and system for receiving PDCP packets
  • Method and system for receiving PDCP packets

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Embodiment Construction

[0022] Embodiments of the method and system for receiving PDCP data packets of the present invention will be described below in conjunction with the accompanying drawings.

[0023] refer to figure 1 as shown, figure 1 It is a flow chart of the receiving method of the PDCP packet of the present invention, including:

[0024] S101. Receive PDU data, and extract a PDCP serial number according to the PDU data;

[0025] In the above steps, it is mainly the process of extracting the PDCP serial number. As an embodiment, the specific extraction process can be as follows:

[0026] The uplink AM mode PDU data submitted by the RLC layer is analyzed at the PDCP protocol layer of the base station to obtain the PDCP sequence number.

[0027] S102. According to the value relationship between the PDCP sequence number and the next PDU sequence number to be received, detect whether the data link is in a discontinuous transmission state;

[0028] In this step, the PDCP sequence number is co...

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Abstract

The present invention relates to a method and system for receiving PDCP data packets, the method steps: receiving PDU data, and extracting a PDCP sequence number according to the PDU data; according to the PDCP sequence number and the next PDU sequence number to be received The value relationship between them detects whether the data link is in the state of discontinuous transmission; when the state of discontinuous transmission is detected, it is judged whether the state of the data link currently receiving PDU data is in the state of uplink re-establishment; if it is not in the state of uplink re-establishment state, the PDU data is discarded, and the state variable is kept as the last recorded value. The present invention judges and discards abnormal malformed packets when receiving them, and maintains relevant state variables to prevent sudden changes in PDCP state variables. The error discarding of data packets greatly improves the robustness of the PDCP protocol layer in processing data services and improves user experience.

Description

technical field [0001] The invention relates to the technical field of mobile communication, in particular to a method and system for receiving PDCP data packets. Background technique [0002] The user plane protocol stack of LTE (Long Term Evolution, long-term evolution version) mainly includes: PDCP (Packet Data Convergence Protocol, packet data convergence protocol), RLC (Radio Link Control, radio link control layer), MAC (Medium Access Control, media access control), PLY (Physical Layer, physical layer). Among them, the main functions of PDCP are: header compression of IP (Internet Protocol, a protocol for interconnection between networks), data encryption and decryption, timer discarding, retransmission and reordering processing during re-establishment. [0003] The PDCP protocol includes a number of state variables. These state variables control the reception or discarding of uplink data according to the requirements of the protocol, mainly including: the next PDU seq...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L12/801H04L12/823H04L47/32
CPCH04L47/32H04L47/34
Inventor 陈细生
Owner COMBA TELECOM SYST CHINA LTD
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