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Method of providing a fast downlink service in a hard handover in a cellular communication system

一种蜂窝通信系统、下行链路的技术，应用在快速恢复下行链路服务领域，能够解决降低服务质量等问题

Inactive Publication Date: 2005-05-25
SAMSUNG ELECTRONICS CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the case of delay-sensitive real-time traffic such as motion pictures, this time delay significantly degrades the quality of service

Method used

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  • Method of providing a fast downlink service in a hard handover in a cellular communication system
  • Method of providing a fast downlink service in a hard handover in a cellular communication system
  • Method of providing a fast downlink service in a hard handover in a cellular communication system

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Embodiment Construction

[0029] Several preferred embodiments of the present invention will be described in detail herein below with reference to the accompanying drawings. In the following description, well-known functions or constructions are not described in detail since they would obscure the invention in unnecessary detail.

[0030] FIG. 1 shows the structure of a cellular mobile communication network to which the present invention is applied. Referring to FIG. 1, a service area 40 of a mobile communication network is divided into a plurality of cells 10a to 10g adjacent to each other. Although the cells 10a to 10g shown in FIG. 1 are hexagonal, they are actually irregular in shape depending on the signal strength and the arrangement of obstacles and their overlapping with each other. The cells 10a to 10g are covered by BSs 20a to 20g that provide communication services to the MS 30 on traffic channels and control channels, respectively. BSs 20a to 20g are connected to network 50 through router...

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Abstract

A method for quickly restoring downlink service during hard handover in a cellular mobile communication system. In order to provide a fast downlink service to the MS during a hard handover from the OBS to the NBS, the NBS receives handover user information from the OBS and uses the handover user information to generate an MS temporary ID to identify the MS. If user data for the MS is generated before a connection for traffic transfer is established between the MS and the NBS, the NBS uses the MS Temporary ID to transfer the user data to the MS on the HCCH.

Description

technical field [0001] The present invention generally relates to a cellular mobile communication system, and particularly relates to a method for quickly restoring downlink (downlink) service during hard handover. Background technique [0002] Generally, a cellular communication system divides its service area into smaller service areas, namely cells covered by a base station (BS). A Mobile Switching Center (MSC) controls these BSs so that when a Mobile Station (MS) moves from one cell to another, the Mobile Station can continue an ongoing call. A cellular communication system uses FDMA (Frequency Division Multiple Access), CDMA (Code Division Multiple Access), etc. to enable a BS to communicate wirelessly with a plurality of MSs. [0003] In a CDMA communication system, wireless channels are identified by orthogonal spreading codes so as to share the same frequency and the same time. One of the features of the CDMA communication system is soft handover for simultaneously...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B7/26H04W36/08H04W48/12
CPCH04W36/0069H04W72/20H04W36/08
Inventor 赵东浩黄必龙李仁琁朴至贤林爱利片基铉黄敬皓李起镐权泰首
Owner SAMSUNG ELECTRONICS CO LTD
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