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Inter-system network reselection method, multi-mode terminal and system

A multi-mode terminal and network reselection technology, applied in electrical components, wireless communication, etc., can solve problems such as rate drop, inability to be called, and inability to solve multi-mode terminals, so as to ensure normal operation, reduce off-network time, The effect of improving service quality

Active Publication Date: 2014-07-02
CHINA MOBILE GROUP JIANGSU
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0042] Defect 1: When the multi-mode terminal performs inter-system reselection in the idle state or in the inter-system interoperability process initiated by the terminal after the end of the voice service, due to reselection from the TD-SCDMA network to the GSM / GPRS network, or from the GSM / When the GPRS network is reselected to the TD-SCDMA network, the multi-mode terminal must be disconnected from the network for 6-8 seconds
During the inter-system reselection process, the multimode terminal will not be able to make a normal call, nor can it serve as a called party.
[0043] Defect 2: When a multi-mode terminal performs data services on a TD-SCDMA network, when the multi-mode terminal moves to a weak TD network signal and a strong GSM network signal, the multi-mode terminal will reselect to the GSM network through inter-system reselection, and the service will be It will be interrupted for 6-8 seconds, and the speed will drop significantly at the same time
However, this technology cannot solve the problem that the multi-mode terminal is in an idle state or the multi-mode terminal is disconnected from the network during the reselection process. called question

Method used

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  • Inter-system network reselection method, multi-mode terminal and system
  • Inter-system network reselection method, multi-mode terminal and system
  • Inter-system network reselection method, multi-mode terminal and system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0118] Such as figure 1 As shown, it is a schematic diagram of the signaling of reselection handover in the idle mode of the TD terminal of the present invention, including:

[0119] Step 101: The multi-mode terminal in idle mode resides in the GSM / GPRS cell. When it is detected that the inter-system reselection threshold (threshold 1) is met, the multi-mode terminal actively initiates PS domain session services, and the multi-mode terminal uses MM (MobileManagement, mobility management) protocol establishes GPRS attachment to CN (Core Network, core network), and then uses SM (Session Management, session management) protocol to initiate PDP activation (ie Active PDP ContextRequest), in which the QoS attributes of the PDP context have strict The delay requirement and the service type are session services, and the CN feeds back Active PDP Context Accept to the multi-mode terminal, marking the successful establishment of the PS domain session service. Go to step 102;

[0120] Step 10...

Embodiment 2

[0134] Such as figure 2 As shown, it is a schematic diagram of the signaling of reselection switching in the voice call end mode of the TD terminal of the present invention, including:

[0135] Step 201: The multi-mode terminal makes a voice call in the TD-SCDMA network. When the transmission quality of the TD-SCDMA network decreases, the RNC will make a decision handover and execute the inter-system CS domain handover procedure;

[0136] Step 202: When the multimode terminal receives the Handover from UTRAN Command from the RNC, it starts handover from 3G to 2G;

[0137] Step 203: After the handover is completed, the multi-mode terminal sends a Handover Complete message to the MSC to announce that the handover is successful. After the handover is successful to GSM, the voice call continues to be maintained on the GSM network.

[0138] Step 204: After receiving the Handover Complete message, the core network MSC sends an Iu ReleaseCommand message to the 3G network RNC to achieve the ...

Embodiment 3

[0159] Such as image 3 As shown, it is a schematic diagram of the signaling of PS direct switching in the idle mode of the TD terminal of the present invention, including:

[0160] Step 301: The multi-mode terminal in idle mode resides in the GSM / GPRS cell. When it is detected that the inter-system reselection threshold (threshold 1) is met, the multi-mode terminal actively initiates PS domain session services, and the terminal uses MM (MobileManagement, Mobility management protocol establishes GPRS attachment to CN (Core Network), and then uses SM (Session Management, session management) protocol to initiate PDP activation (ie Active PDP ContextRequest), where the QoS attribute of PDP context has strict delay requirements , The service type is a session service, and the CN feeds back the terminal Active PDP Context Accept, which indicates that the PS domain session service is successfully established. Go to step 302;

[0161] Step 302: After the multi-mode terminal establishes a...

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Abstract

The invention discloses an inter-system network reselection method, multi-mode terminal and system. The method includes the steps that when 2G voice service is completed or the multi-mode terminal resident in a 2G network plans to conduct reselection towards a 3G network, the multi-mode terminal initiates a PS domain conversational class service request; after the multi-mode terminal is connected with the 2G network, adjacent 3G network information is acquired by reading system information issued by a BSC of the 2G network; after the BSC of the 2G network receives a 3G network measurement report reported by the multi-mode terminal, the PS direct switching process from the 2G network to the 3G network is initiated; the multi-mode terminal is switched into the 3G network from the 2G network according to the adjacent 3G network information, a location area and a routing area are updated, and PS domain conversational class service is released. By means of the inter-system network reselection method, multi-mode terminal and system, the offline time is shortened when the multi-mode terminal conducts reselection towards a TD network, and thus calling and data traffic normal operation of the multi-mode terminal in the switching type reselection process from the 2G network to the TD network can be guaranteed.

Description

Technical field [0001] The present invention relates to the technical field of core network in the communication field, in particular to a method for reselecting a network between different systems, a multi-mode terminal and a system. Background technique [0002] At present, the technical solutions for interoperability of multi-mode terminals (the present invention generally refers to dual-mode terminals supporting GSM and TD-SCDMA) under GSM and TD-SCDMA networks include: [0003] 1. The interoperability scheme between GSM network and TD-SCDMA (hereinafter referred to as TD) network in the current network includes: [0004] (1) In the idle state, the multi-mode terminal realizes the conversion between the GSM network and the TD-SCDMA network through reselection. The multi-mode terminal will be offline during the conversion process of the different system, and the caller and the called party cannot be realized; [0005] (2) In the voice service, the multi-mode terminal is allowed to ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W36/14H04W36/30H04W88/06
Inventor 王清卞国东李飞杜长浩乔勇戴宸光
Owner CHINA MOBILE GROUP JIANGSU