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Soft combining apparatus and method in a CDMA mobile communication system providing mbms service

一种移动通信系统、码分多址的技术，应用在软移交的软组合装置领域，能够解决不能执行软组合等问题

Inactive Publication Date: 2006-08-30
SAMSUNG ELECTRONICS CO LTD
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  • Abstract
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AI Technical Summary

Problems solved by technology

In this case soft combining cannot be performed because UE does not report to SRNC
Since the MBMS service is provided through the broadcast channel, the handover in the CELL_FACH state should be considered, so it faces the problem of soft combination

Method used

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  • Soft combining apparatus and method in a CDMA mobile communication system providing mbms service
  • Soft combining apparatus and method in a CDMA mobile communication system providing mbms service
  • Soft combining apparatus and method in a CDMA mobile communication system providing mbms service

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Embodiment Construction

[0023] Preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings. In the drawings, the same reference numerals designate the same or similar elements even if they are in different drawings. In the following description, detailed descriptions of well-known functions and configurations incorporated herein are omitted for conciseness.

[0024] In order to stably deliver data to UEs located in soft handover areas, soft combining should be provided even for MBMS services. Therefore, the present invention provides a scheme enabling UE to perform soft combining by itself when necessary, for efficient MBMS service.

[0025] However, it is not easy for a UE to soft combine MBMS data received from multiple different Node Bs on a common channel. This is because an asynchronous mobile communication system supporting MBMS services does not support timing synchronization between two Node Bs. Therefore, in order to soft comb...

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Abstract

A method and apparatus for determining soft handover in a CDMA mobile communication system supporting Multimedia Broadcast / Multicast Service (MBMS) is provided. In the asynchronous CDMA mobile communication system supporting MBMS, when a UE moves to a region where it can receive data from a plurality of Node Bs, the UE determines whether to perform soft combining using a measurement value of a dedicated pilot channel signal, in performing soft handover. In this way, the UE can determine whether to perform soft combining on MBMS data received from a plurality of Node Bs by itself. Therefore, even though an MBMS user moves from a current or existing cell to a new cell, a stable MBMS service is provided to the user, thereby contributing to the user's convenience.

Description

technical field [0001] The present invention generally relates to a method of soft handover (soft handover) in an asynchronous code division multiple access (CDMA) mobile communication system, more specifically, relates to a method in Multimedia Broadcast / Broadcast Service (MBMS, Multimedia Broadcast / Soft combination device and method for soft handover in Multicast Service). Background technique [0002] Due to the recent development of the telecommunication industry, the CDMA mobile communication system needs to provide multicast multimedia communication services for transmitting large amounts of data such as packet data and circuit data and for providing voice services. [0003] To support multicast multimedia communications, a service called broadcast / multicast service can be used to provide a service from one data source to multiple user equipments (UEs). Broadcast / multicast services can be classified into cell broadcast services (CBS) that support message-based servic...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B7/26H04B7/02H04W4/06H04W4/12H04W36/18
CPCH04W36/18H04B7/022H04W4/12H04W4/06H04B1/7117H04W36/0007H04W36/00692
Inventor 郑扩永崔成豪金泳范
Owner SAMSUNG ELECTRONICS CO LTD
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