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Apparatus and method for avoiding data loss in packet networks

A technology for equipment and connection identifiers, applied in data exchange networks, digital transmission systems, electrical components, etc., can solve problems such as transmission delay, system capacity reduction, and system resource occupation

Inactive Publication Date: 2009-06-24
QUALCOMM INC
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This loss of data can result in retransmissions which cause transmission delays and consume system resources and reduce overall system capacity

Method used

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  • Apparatus and method for avoiding data loss in packet networks
  • Apparatus and method for avoiding data loss in packet networks
  • Apparatus and method for avoiding data loss in packet networks

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Embodiment Construction

[0018] figure 1 is a diagram of a wireless communication system 100 that may be designed to support one or more wireless standards and / or designs (e.g., W-CDMA standard, IS-95 standard, cdma2000 standard, HDR specification, 1xEV -DV proposal, GSM standard). In the exemplary embodiment, system 100 supports cdma2000 communications.

[0019] For simplicity, system 100 is shown including an exemplary configuration of typical base station components including a Mobile Switching Center (MSC) 160 , Base Station Controller (BSC) 140 and Base Transport Substation (BTS) 150 . Each of the two mobile stations 170 communicates with the base station through one or more BTS 150 . Together the base stations and their coverage areas are often referred to as "cells". In the IS-95 system, a unit can include one or more partitions. In the W-CDMA specification, each sector of a base station and the coverage area of ​​the sector is called a unit. As used herein, the term base station is used i...

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Abstract

The present invention discloses techniques for avoiding data loss and reducing registration overhead in a wireless packet data communication system. In one embodiment, a mobile station (170) adds each connection to a connection list (430) after registering with the PCF (130). When the mobile station re-enters the coverage area of ​​the PCF, it does not need to re-register a connection included in the connection list. In another embodiment, a PDSN (110) maintains a connection table (330) with one or more connections for each mobile station. The PDSN transmits data to the mobile station along one of the connections. In yet another embodiment, a PDSN transmits on an active connection, if one exists. In yet another embodiment, the connection in the connection list or table is removed when a corresponding inactivity timer (320) expires. Various other embodiments also exist. Benefits include allowing mobile stations to travel between PCFs without re-registration, which reduces registration overhead and enhances system capacity, and avoids data loss of network-initiated data directed to a mobile station, thereby delivering the data in a timely manner And reduce the system resources allocated to data retransmission.

Description

[0001] Related applications [0002] This application claims priority to US Provisional Patent Application Serial No. 60 / 456,025, filed March 17,2003. technical field [0003] The present invention relates generally to wireless communications, and more particularly to avoiding data loss and reducing registration overhead in packet networks. Background technique [0004] Wireless communication systems are widely used to provide various types of communications, such as voice and data. These systems may be based on Code Division Multiple Access (CDMA), Time Division Multiple Access (TDMA), or some other multiple access technique. A CDMA system offers certain advantages over other types of systems, including enhanced system capabilities. [0005] CDMA may be designed to support one or more CDMA standards, such as (1) "TIA / EIA-95-B Mobile Station-Base Station Compatibility Standard for Dual-Mode Wideband Spread Spectrum Cellular System" (IS-95 standard); ( 2) Standards provide...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L12/56H04W60/00
Inventor 尼什沙尔·阿布罗邓肯·霍
Owner QUALCOMM INC
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