Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Method and equipment for improving performance of PDCP (Packet Data Convergence Protocol) ROHC (Robust Header Compression) algorithm

A robust header compression and algorithm technology, applied in the direction of error prevention/detection, network traffic/resource management, electrical components, etc., using the return channel to optimize system performance, rationally and efficiently system resources, and improve sensitivity and accuracy Effect

Active Publication Date: 2013-08-07
DATANG MOBILE COMM EQUIP CO LTD
View PDF3 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The purpose of the present invention is to at least solve one of the above-mentioned technical defects, especially solve the problem that ROHC only relies on the single means of ROHC decompression end CRC check to carry out state migration and mode conversion step by step, by introducing a new judgment channel Standards for condition changes, improve the sensitivity and accuracy of ROHC, quickly adjust the working status and operation mode of the compression and decompression state machines, and timely and effectively prevent the error diffusion and packet loss propagation of adjacent packet data

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Method and equipment for improving performance of PDCP (Packet Data Convergence Protocol) ROHC (Robust Header Compression) algorithm
  • Method and equipment for improving performance of PDCP (Packet Data Convergence Protocol) ROHC (Robust Header Compression) algorithm
  • Method and equipment for improving performance of PDCP (Packet Data Convergence Protocol) ROHC (Robust Header Compression) algorithm

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0023] Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals designate the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary only for explaining the present invention and should not be construed as limiting the present invention.

[0024] In order to facilitate the understanding of the purpose of the present invention, the application of ROHC in the wireless communication environment will be further analyzed in depth below. Consider two typical scenarios in wireless communications:

[0025] In the first case, due to bit errors caused by the wireless link, the decompression end cannot correctly decompress the packet, and the CRC check fails. If the number of compressed packets whose CRC fails at the decompression end exceeds a certain threshold, negative feedback N...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The embodiment of the invention provides a method for improving the performance of a PDCP (Packet Data Convergence Protocol) ROHC (Robust Header Compression) algorithm, which comprises the following steps: an uncompressing end monitors and makes statistics on channel condition information; and when monitoring that the channel condition exceeds a preset threshold value, the uncompressing end carries out state transition and mode switching and sends ACK (Acknowledgment) or NACK(Negative Acknowledgement) to the compressing end of equipment which receives and transmits an ROHC compressed data packet to excite the compressing end to carry out the state transition and mode switching. The embodiment of the invention also provides equipment for improving the performance of the PDCP (Packet Data Convergence Protocol) robust header compression algorithm. In the technical scheme of the embodiment of the invention, by introducing in a new standard for judging the change of the channel condition, the sensitivity and the accuracy of ROHC are improved, the respective working state and operation mode of a compressing-state machine and an uncompressing state machine can be adjusted rapidly, thereby timely and effectively preventing the error diffusion and packet loss spread of contiguous packet data.

Description

technical field [0001] The present invention relates to the field of mobile communication, in particular, the present invention relates to a method and equipment for improving the performance of PDCP robust header compression algorithm. Background technique [0002] Mobile and broadband have become the development direction of modern communication technology. 3GPP (3rd Generation Partnership Project) is committed to the evolution of LTE (Long Term Evolution, long-term evolution) system as a 3G system. The goal is to develop 3GPP wireless access technology towards Evolution for high data rate, low latency and optimized packet data applications. [0003] The sublayer PDCP (Packet Data Convergence Protocol) in the L2 layer of the LTE system adopts a header compression technology ROHC (Robust header Compression, robust header compression) algorithm, which is specifically given by the file RFC3095. The ROHC header compression proposed in the RFC3095 protocol can be described as ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): H04L1/16H04W24/00H04W28/06
Inventor 寻伟李远军周宇恒
Owner DATANG MOBILE COMM EQUIP CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com