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Mobile communication system using a downlink shared channel

a mobile communication system and shared channel technology, applied in the field of communication, can solve the problems of increasing infrastructure costs, adverse effects on dsch rate, and lowering communication quality, and achieve the effect of improving communication ra

Inactive Publication Date: 2007-08-02
FUJITSU LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0025] An object of the present invention is therefore to provide an efficient communication method and device based on the current DSCH technique, whereby diverse services, in particular distribution system services (multi-cast services) can be implemented in future by improving the communication rate.

Problems solved by technology

There is therefore considerable waste from the point of view of efficiency of use of wireless and wired transmission channels and it is thought that, as a result of the accumulation of the amount of data destined for the mobiles, the DSCH rate will be adversely affected and communication quality will tend to be lowered.
Although this problem may apparently be solved by fortifying the infrastructure, this results in increased costs of the infrastructure and so in increased communication charges and cannot but put a brake on future diversification and development of service modes.

Method used

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  • Mobile communication system using a downlink shared channel
  • Mobile communication system using a downlink shared channel
  • Mobile communication system using a downlink shared channel

Examples

Experimental program
Comparison scheme
Effect test

example 1

PRACTICAL EXAMPLE 1

Area Information Distribution Service Using Multicast DSCH

[0167] Information relating to this area is constantly distributed using multicast DSCH, for each area, from for example server means within the core network, and the mobile receives this area distribution information by performing call connection.

example 2

PRACTICAL EXAMPLE 2

BGM Distribution Service Using Multicast DSCH

[0168] For example music data is constantly transmitted from for example server means in the core network and this is multicast within the area using DSCH. When a mobile comes into service by performing call connection, this distributed music data is received on the DSCH and reproduced. In this way, it is possible to hear as BGM this music that is received in the background, while carrying on a conversation with another party.

[0169] Furthermore, it may be envisioned that a service may be provided displaying characteristic features for each geographical region by using different music data for each area. This is of course not restricted to music data and a similar service could be provided for all types of audible data.

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Abstract

A method of mobile communication at a base station includes transmitting to a mobile station, identifying information for multicast data to be transmitted to the mobile station and transmitting the multicast data on a shared channel to the mobile station, wherein the data is identified by the information.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS [0001] This application is a divisional of U.S. application Ser. No. 10 / 999,206, filed Nov. 24, 2004, which is a continuation of International Application No. PCT / JP02 / 05340, filed May 31, 2002, which are hereby incorporated by reference herein in their entirety.TECHNICAL FIELD [0002] The present invention relates to a communication method and device in a mobile communication system using a downlink shared channel (DSCH). BACKGROUND ART [0003] In recent years, development of CDMA (Code Division Multiple Access) communication systems has proceeded apace, and the need to shift to Wideband-CDMA (W-CDMA) systems that provide a wider bandwidth than previously in order to exchange not merely voice but also large-capacity data such as images or video at high speed, and with high quality and efficiency has increased. [0004] Communication systems adapted to these demands are generally called third generation mobile communication systems and the standar...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): H04Q7/24H04J3/00H04W4/06H04W72/04H04W72/12
CPCH04W4/06H04W72/005H04W72/1289H04W72/1268H04W72/042H04W72/30H04W72/23
Inventor IKEDA, EIJIKUMAGAI, TOMONORITOMITA, TETSUOKOBAYASHI, KAZUNARI
Owner FUJITSU LTD