Method and system for mobile communications

a mobile communication and method technology, applied in the field of mobile communication methods and systems, can solve problems such as unsuitable data communication, and achieve the effect of reducing the number of reassignments or rearrangements of code resources and reducing the delay of connection tim

Inactive Publication Date: 2006-08-10
KOKUSA ELECTRIC CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0125] By virtue of the aspects of the invention as set forth, it is possible to minimize the number of reassignments or rearrangements of code re...

Problems solved by technology

However, CDMA according to prior art is prepared mainly for voi...

Method used

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  • Method and system for mobile communications
  • Method and system for mobile communications
  • Method and system for mobile communications

Examples

Experimental program
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Effect test

case b

[1707] Case B) TMUI has been assigned by another LRDF.

[1708] In this rule, case B is not described.

[1709] 2) Mobile Originating Call

[1710] 3) Unsuccessful Case: If the newly visited network cannot retrieve successfully (e.g., loses TMUI), then the newly visited network attempts to retrieve the FPLMTS user's IMUI from the UIMF.

2.4.5.3.2.1 Information Flow Diagram

[1711]FIG. 68 shows an information flow diagram of the user ID retrieval.

2.4.5.3.2.2 Information Flows and Associated Information Elements

[1712] Relationship rd (LRCF-LRDF)

[1713] An IMUI RETRIEVAL request indication is used to retrieve an IMUI on the basis of its corresponding TMUI. This information flow is sent from the LRCF to the LRDF in the same network. An IMUI RETRIEVAL response confirmation is a response to the request indication. The details of the IMUI RETRIEVAL request indication and response confirmation are represented in FIG. 550. In case that a call is originated from the mobile terminal, the TMUI assig...

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Abstract

When a network pages the temporary user mobile identifier of a mobile station, the mobile station sends a response to the network. Next, the network checks the authenticity of the user using a ciphering key, corresponding to the temporary user mobile identifier and a random number. If the temporary user mobile identifier is authenticated, a normal incoming call acceptance procedure is executed. If the mobile station is authenticated although the temporary user mobile identifier is wrong, the network reassigns a new temporary user mobile identifier to the mobile station and stops the current communication. In communication, the network and the mobile station mutually notify encipherment-onset time and negotiate about encipherment manner with each other. In addition, diversity handover is commenced upon a call attempt. Furthermore, if a branch replacement is necessary, the current branch is replaced by new branches capable of executing the diversity handover. Additionally, when a new call occurs to or from the mobile station capable of treating a plurality of calls simultaneously, the mobile station uses the same branch structure and the same communication frequency band for all of calls. Additionally, when a new call occurs to or from the mobile station capable of treating a plurality of calls simultaneously, a branch structure and a communication frequency band, which can continue all of the calls, are selected and used. Therefore, the mobile communications system is suitable for transmission of various sorts of data in accordance with the development of multimedia.

Description

TECHNICAL FIELD [0001] The present invention generally relates to a method and system for mobile communication and especially relates to a method and system adopted to transmission of various sorts of data in accordance with the development of multimedia. BACKGROUND ART [0002] Conventionally, portable telephones have been widely spread, and TDMA (time division multiple access) and FDMA (frequency division multiple access) were used for access methods for portable telephones. In these days, CDMA (code division multiple access) is being adopted instead of TDMA and FDMA because of various merits, such as high efficiency at usage of frequency band, facility of change of transmission rate, and preservation from eavesdropping. [0003] However, CDMA according to prior art is prepared mainly for voice transmission and therefore is not suitable for data communication. In recent years, as the development of multimedia, not only voice but also various kinds of data that can be processed in comp...

Claims

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Application Information

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IPC IPC(8): H04B1/38H04M1/00H04B7/005H04W12/00H04W12/02H04W12/06H04W16/28H04W36/18H04W52/04H04W52/12H04W52/24H04W72/04H04W88/02
CPCH04B7/022H04W12/06H04W36/08H04W36/18H04W88/06H04W52/12H04W80/04H04W84/042H04W88/12H04W52/04H04W12/03H04W12/02H04W36/30H04W52/24H04W72/0453H04W72/0466H04W72/23
Inventor TAMURA, MOTOSHIMIKI, MUTSUMARUOKAMOTO, AKIKOKUSUNOSE, KENYAUCHIKOSHI, AKIHIROIGARASHI, DAISUKEYAMAGATA, KATSUHIKOSATO, TAKAAKIHAGIWARA, JUNICHIROWATANABE, YASUYUKIHAMAJIMA, TAKUYAHATA, MASAFUMIISHIKAWA, NOBUTAKAYASUDA, YOSHIYUKIYUNOKI, KAZUFUMIUCHIYAMA, NOBUHIDE
Owner KOKUSA ELECTRIC CO LTD
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