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

Method for holding packet data protocol convergence sublayer sequence number synchronization

A packet data protocol and serial number technology, applied in the direction of data exchange network, digital transmission system, electrical components, etc., can solve the problems of not providing lossless migration of discarding signaling, not supporting lossless migration, and unable to guarantee the synchronization of serial numbers, etc., to achieve The effect of extending the range of application

Active Publication Date: 2006-09-06
XFUSION DIGITAL TECH CO LTD
View PDF0 Cites 35 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] In the prior art, when a discard occurs, the number of data packets sent by the sender may be more than the number of data packets received by the receiver. Although the above-mentioned explicit discard signaling is stipulated in the prior art protocol, it does not provide an application The specific method of discarding signaling to ensure lossless migration, therefore, according to the existing technology defined in 3GPP 25323, the synchronization of sequence numbers cannot be guaranteed, so lossless migration is not supported in discarding mode

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 for holding packet data protocol convergence sublayer sequence number synchronization
  • Method for holding packet data protocol convergence sublayer sequence number synchronization
  • Method for holding packet data protocol convergence sublayer sequence number synchronization

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Embodiment 1: The RLC and PDCP sublayer of the receiver cooperate to complete PDCP sequence number synchronization

[0032] First, add the configuration information element "Send MRW" in the RLC parameter configuration message sent by RRC (Radio Resource Controller) to the RAN and UE side. When this information element is set to TRUE, it means that when discarding occurs, send The explicit discard signaling MRW SUFI sent by the party needs to carry the RLC PDU sequence number information corresponding to the last segment of each discarded SDU.

[0033] MRW SUFI can adopt the format shown in Figure 5, where: LENGTH represents the number of SN_MRW in the current MRWSUFI; SN_MRWi represents the RLC PDU sequence number corresponding to the last segment of each discarded SDU in MRW SUFI, and Nlength and SN_MRWlength together represent the last The end position of the discarded SDU, where SN_MRWlength represents the RLC PDU sequence number corresponding to the last segment of...

Embodiment 2

[0043] Embodiment 2: The data packet carrying the PDCP serial number is sent by PDCP to complete the synchronization of the serial number

[0044] Since the PDCP sequence number can be carried in the PDCP PDU, in order to support lossless relocation in discard mode, when the sender’s RLC receives the MRW ACK SUFI returned by the receiver’s RLC, it sends a discard instruction to PDCP, requiring PDCP to send The data packet carries the corresponding PDCP sequence number. After the receiving PDCP receives the data packet with the sequence number, no matter what the currently maintained PDCP sequence number is, it will update the currently maintained PDCP according to the sequence number carried in the received PDCP PDU. PDCP sequence number.

[0045] The specific process is shown in Figure 7: After receiving the MRW SUFI, the receiving RLC submits all currently received and unsubmitted SDUs to the PDCP, and returns MRW ACK SUFI to the sending RLC. The MRWACK SUFI includes the rec...

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

A method for keeping PDCP serial number synchronizing is used for RLC works in drop mode. It contains when transmitting side RLC checks drop process, transmitting dropped SDU serial number to receiving side RLC and receiving return response message, receiving side RLC according to said SDU serial number information to determine practical dropped SDU total number and transmitting to receiving side PDCP, receiving side PDCP directly increasing said number to current PDCP serial number. Said SDU serial number information includes each to be dropped SDU serial number information current dropped process, said serial number information is each SDU last section corresponded RLC PDU serial number and transmitted through display drop signalling. Said invented method supports non destructive migration in RLC working in drop mode.

Description

technical field [0001] The invention relates to the field of mobile communication, in particular to a method for keeping PDCP serial number synchronization in RLC discarding mode in Wideband Code Division Multiple Access (WCDMA, Wideband Code Division Multiple Access) air interface technology. Background technique [0002] Universal Mobile Telecommunications System (UMTS, Universal Mobile Telecommunications System) is a third-generation mobile communication system that adopts Wideband Code Division Multiple Access (WCDMA, Wideband Code Division Multiple Access) air interface technology, and is also commonly referred to as a WCDMA communication system. The WCDMA communication system includes a radio access network (RAN, Radio Access Network) and a core network (CN, Core Network). Among them, the RAN implements all wireless-related functions, and is generally also called Universal Terrestrial Radio Access Network (UTRAN, Universal Terrestrial Radio Access Network). The wirele...

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
IPC IPC(8): H04L12/56H04L29/06H04L12/755
Inventor 汤正华
Owner XFUSION DIGITAL TECH 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