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Method, device and system for transmitting PDCP data

A data sending method and technology of the sender, applied in the field of communication, can solve problems such as interruption of data transmission, submission of wrong data, out-of-synchronization update of serial number status variables of the receiver and sender at the PDCP layer, etc., and achieve the effect of improving reliability

Active Publication Date: 2011-06-22
HUAWEI TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In the existing PDCP data transmission method, in some scenarios, there is a problem of asynchronous update of the serial number status variables of the PDCP layer receiver and sender, which will cause data transmission to be interrupted or wrong data to be submitted to the upper layer

Method used

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  • Method, device and system for transmitting PDCP data
  • Method, device and system for transmitting PDCP data

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Embodiment Construction

[0024] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. It should be understood that the described embodiments are only some of the embodiments of the present invention, not all of them. example. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0025] The solutions disclosed in the embodiments of the present invention can be applied to the radio link control confirmation mode RLC AM. It should be noted that the embodiment of the present invention is described by taking the LTE system as an example, but not limited thereto.

[0026] An embodiment of the present invention provides a method for sending PDCP data, such as figure 2 shown, including the following s...

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Abstract

The embodiment of the invention relates to a method, a device and a system for transmitting packet data convergence protocol (PDCP) data in the field of communication. The method comprises the following steps of: transmitting data by a PDCP entity of a transmitting party under a radio link control assurance mode (RLCAM); and updating a sequence number corresponding to the next datum to be transmitted, and making a model subtraction difference between the sequence number corresponding to the next updated data to be transmitted and a sequence number corresponding to the next datum be confirmed less than or equal to the size of a resequencing window of a receiving part, namely a PDCP receiving entity. By controlling the data transmission speed of the PDCP transmitting entity by the embodiment, the relevant state variables of the PDCP transmitting party and the PDCP receiving party can be updated synchronously so as to guarantee the reliability of data transmission.

Description

technical field [0001] The present invention relates to the field of communication technology, and in particular to a Data Convergence Protocol (PDCP, Packet Data Convergence Protocol) data sending method, device and system. Background technique [0002] Long Term Evolution (LTE, Long Term Evolution) belongs to the Long Term Evolution version of the 3rd Generation Partnership Project (3GPP, the 3rd Generation Partner Project) protocol. The user plane protocol layer of LTE is as follows: figure 1 As shown in , including: PDCP, radio link control (RLC, RadioLink Control), media access control (MAC, Medium Access Control), and physical layer (PHY, Physical Layer). Among them, the main functions of PDCP are: header compression of IP data packets, encryption and decryption of data, timer discarding, retransmission and reordering processing during re-establishment; the main functions of RLC are: Packet Convergence Protocol Protocol Data Unit (PDCP PDU, PDCP Protocol Data Unit) s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/56H04L29/06H04L12/755
Inventor 杨志胜
Owner HUAWEI TECH CO LTD
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