Method for double-mode terminal switching between block field and circuit field

A dual-mode terminal and packet domain technology, which is applied in the field of cross-domain handover of dual-mode terminals, can solve problems such as limited application range, inability to apply wireless cellular networks, and increase operator costs to achieve cost-saving effects

Active Publication Date: 2007-01-03
HUAWEI TECH CO LTD
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Problems solved by technology

[0013] In practical application, the above scheme has the following problems: it can only be applied to CDMA network, but cannot be applied to other wireless cellular networks such as GSM, and the application range is limited
In addition, it is necessary to modify the existing access network and circuit domain network equipment, which will inevitably increase the cost of operators
[0014] The main reason for this situation is that the above solution has a close coupling relationship with the access network due to the analog circuit domain handover, especially when the handover uses CDMA signaling (such as Figure 5 "TIA-41MAP" signaling in ), therefore, if it is not a CDMA network, the CDMA network signaling cannot be simulated

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  • Method for double-mode terminal switching between block field and circuit field
  • Method for double-mode terminal switching between block field and circuit field
  • Method for double-mode terminal switching between block field and circuit field

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Embodiment Construction

[0079] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0080] It should be noted that a newly added network entity interoperability gateway (Interwork Gateway, referred to as "IWGW") in the patent application with the application number 200510078750.1 and the invention title "A Method for Realizing Dual Network Interoperability" is used in the present invention. ). The specification of this patent application is cited in its entirety in this specification.

[0081] In traditional circuits, IWGW is a service control point (Service Control Point, "SCP" for short) SERVER signed by dual-mode users, and all calls and calleds performed by users in the circuit domain need to be triggered to this entity. This entity can thus remain in the call control role in the signaling path of the call.

[0082] In the packet domain, th...

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Abstract

A method for switching two-mode terminal between packet domain and circuit domain includes issuing new call at in circuit domain, judging whether new call is switch or not and routing new call to MGW as well as switching opposite end to MGW then releasing original call if it is when two-mode terminal is switched from packet domain to circuit domain; issuing logon in packet domain by two-mode terminal, using IWGW as B2BUA to connect through two-mode terminal and MGCF after logon is detected and connecting MGCF to apposite end when two-mode terminal is switched from circuit domain to packet domain.

Description

technical field [0001] The invention relates to the switching technology of the mobile communication system, in particular to the switching technology of the dual-mode terminal cross-domain. Background technique [0002] In recent years, communication technology has developed rapidly. The second generation mobile communication system (2ndGeneration, 2G) is a digital communication system mainly transmitting voice and data. In addition to providing voice communication services, it can also provide low-speed data services and short message services. A typical 2G system includes a Global System for Mobile Communication (GSM for short) using a Time Division Multiple Access (TDMA for short) manner. [0003] At the same time, the 2.5G mobile communication technology that has been commercially applied is a transitional technology from 2G to 3G. Although 3G can combine voice communication and multimedia communication, its possible value-added services will include images, music, w...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04Q7/38H04L29/06H04W36/14H04W76/04
Inventor 徐杰刘文宇尤昉
Owner HUAWEI TECH CO LTD
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