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Use station device for handoff in a broadcast communication system

一种广播通信、用户站的技术,应用在越区切换领域,能够解决无法用户站同步发送等问题

Inactive Publication Date: 2010-11-03
QUALCOMM INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since broadcast transmissions are intended for many subscriber stations, the base station cannot transmit simultaneously for each subscriber station requiring handover

Method used

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  • Use station device for handoff in a broadcast communication system
  • Use station device for handoff in a broadcast communication system
  • Use station device for handoff in a broadcast communication system

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Embodiment Construction

[0024] definition

[0025] The word "exemplary" is used herein to mean "serving as an example, instance, or illustration." Any embodiment described herein as "example" is not necessarily to be construed as preferring or favoring other embodiments.

[0026] The term point-to-point communication is used herein to indicate communication between two subscriber stations through a dedicated communication channel.

[0027] The terms group service, point-to-multipoint communication, push-to-talk or dispatch service are used herein to denote a communication in which multiple subscriber stations typically receive communications from a single subscriber station.

[0028] The term packet is used here to denote a group of bits, including data (payload) and control elements, arranged in a specific format. Control elements include, for example, preambles, quality metrics, and other elements known to those skilled in the art. Quality metrics include, for example, cyclic redundancy check (C...

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PUM

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Abstract

A method and system for a handoff in a broadcast communication system is disclosed. A subscriber assisted handoff is impractical in a broadcast communication system due to e.g., a high signaling load, a difficulty to synchronize the broadcast transmission. On the other hand, the small number of broadcast channels enables the subscriber station to perform the handoff autonomously. To streamline the autonomous handoff decision process, several distinct sets of pilot identifiers and rules for transitioning among the sets are defined. To fully integrate broadcast services with the services provided by the cellular telephone systems in a subscriber environment, a methods for various handoff scenarios are analyzed.

Description

[0001] This application is a divisional application of an invention patent application with an application date of August 15, 2002, an application number of 02820800.5, and an invention title of "Method and System for Handover in a Broadcast Communication System". technical field [0002] The present invention relates to broadcast communication in wired or wireless communication systems, or can be regarded as point-to-multipoint communication, and more particularly to methods and systems for handover in such broadcast communication systems. Background technique [0003] Communication systems have been developed so that information signals from a source station can be sent to a destination station in a remote location. In sending an information signal from a source station over a channel, the information signal is first converted into a form suitable for efficient transmission over the communication channel. Transformation, or modulation, of the information signal involves em...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W36/36H04W36/24H04W48/10H04W72/02H04B7/26H04L12/56H04W4/06H04W4/08H04W36/08H04W36/18H04W36/30
CPCH04W4/06H04W36/0027H04W72/005H04W36/30H04W36/18H04W36/08H04W36/36H04W36/0007H04W72/30H04W8/265
Inventor 陈道王俊R·信纳拉加赫B·K·布特勒E·G·小笛德曼
Owner QUALCOMM INC