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Method for implementing call forwarding on no answer when GSM1X user roaming to CDMA network

A CDMA network, GSM1X technology, applied in the field of mobile communications, can solve the problems that users cannot complete the call forwarding service without answer, and CDMA MSC does not support the forwarding of the landing office, etc.

Active Publication Date: 2007-11-28
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] In this way, the following problems will arise, that is, when a GSM1X mobile user roams from the home GSM network to the CDMA network, if the currently serving CDMA MSC does not support the forwarding of the landing office, the user cannot complete the call forwarding service on no answer

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  • Method for implementing call forwarding on no answer when GSM1X user roaming to CDMA network
  • Method for implementing call forwarding on no answer when GSM1X user roaming to CDMA network

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Embodiment Construction

[0027] In order to deeply understand the method of the present invention for GSM1X users roaming to a CDMA network to realize call forwarding on no answer, the present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0028] According to the IS-41 protocol, the non-response call forwarding process of CDMA subscribers on this network is shown in Figure 1, including the following steps:

[0029] Step 11, when a user dials a user roaming to the CDMA network, the CDMA network user is an example with the calling user, the CDMA mobile switching system (ie CDMAMSC / VLR, mobile switching center / visitor location register) visited by the calling user ) send a location request message (LOCAREQ) to the CDMAHLR / AUC (Home Location Register / Authentication Center) to which the called user belongs, requesting the location information of the called user;

[0030] Step 12, CDMA HLR sends a CDMA route request message (ROUTREQ) to ...

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Abstract

This invention discloses a method for a GSMIX user roaming to CDMA network to realize non-reply call forward including the following steps: G&C gateway designs the CDMA MSC / VLR number not supporting forward of the local office in its matched data base, when a GSMIX user roams to the CDMA network from an attribution network and is called, the G& C gate is taken as its HLR to send a CDMA route request information to the user currently accessed CDMA MSC / VLR, G &C gate judges if it supports the local office forward, if not, it fills in the MSCID, MSCIN parameter of CDMA MSC VLR in said route request accessed by the called user, if said user is no response, then the CDMA MSC / VLR starts a new call according to the forward number set by the user the G& C gate sent to.

Description

technical field [0001] The invention belongs to a method for realizing call forwarding without answering of users in the field of mobile communication, in particular to a method for forwarding calls without answering for GSM1X users roaming to a CDMA network. Background technique [0002] According to the 3GPP2 (Third Generation Partnership Project 2 third-generation mobile communication standardization partner project 2) standard, in order to realize the mutual roaming between the GSM network and the CDMA network, it is necessary to add an IIF (IIF) between the CDMA network and the GSM network. Interworkingand Interoperation Function) devices are responsible for the conversion of two network signaling, parameters and services. In China Unicom's technical specification, this device is also called G&C gateway (that is, GSM&CDMA gateway). In the prior art, the content of the G&C gateway can refer to the N.S0028 protocol of 3GPP2 and relevant enterprise standards formulated by...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04Q7/38H04Q7/22H04W4/16H04W8/02
Inventor 赵维铎胡静波丁兆明
Owner ZTE CORP