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Device, system and method for realizing inter-switching of circuit domain and packet domain
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A packet domain and circuit domain technology, applied in the field of communication, can solve problems such as waste of resources
Active Publication Date: 2006-12-20
HUAWEI TECH CO LTD
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[0019] The present invention provides a device, system and method for switching from the circuit domain to the packet domain, switching from the In packet domain switching, all calls of mobile users in the circuit domain need to be routed to the packet domain, resulting in waste of resources
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example 1
[0335] Example 1: The process of switching from the CS domain to the PS domain.
Embodiment 1
[0336] The network structure of the first embodiment includes an MGW, and the mobile user switches from the circuit domain to the packet domain. Such as Figure 13 As shown, Embodiment 1 mainly includes the following steps:
[0337] S11. The MSC reports the measurement result of the wireless channel;
[0338] S12. The BSC initiates a handover to the MSC based on the target cell found by the adjacent cell configuration relationship;
[0339] S13. The MSC finds the address of the FBSC according to the target cell, and initiates a handover request;
[0340] S14. The FBSC adds two endpoints to the MGW, one for connecting to the MSC and one for connecting to the packet domain;
[0342] S16. The FBSC initiates a session to the application server according to the user identifier IMSI; here the application server may be an interoperable gateway IWGW.
[0343] S17. The application server returns a provisional resp...
example 2
[0357] Example 2: Handover from PS domain to CS domain.
[0358] Such as Figure 14 As shown, it mainly includes the following steps:
[0359] S21. The mobile station initiates handover to the FBSC through the packet network;
[0360] S22-S25, FBSC requests and obtains the switching number from the application server through the packet network, and the method of finding the application server is the same as example 1;
[0361] S26. The FBSC initiates a calling session to the MSC using the switching number as the called number;
[0362] S27, S211, S212, S214, MSC routes the call to the application server in the packet domain according to the switching number, and completes the connection from the MSC to the application server;
[0363] S28, S29, and MSC complete the calling side connection in parallel;
[0364] S215, S216, S217, S218, S219, the FBSC initiates the handover according to the circuit domain handover method, and when the FBSC receives the handover command, it no...
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Abstract
The invention relates to a device fro switching circuit field to group field, and relative system and method, wherein said device comprises: circuit field network interface unit, group field network interface unit and switch control unit. Said method comprises: FBSC based on the circuit field mobile user mark searches for the attach field information of group field of mobile user; using said attach field network to initialize the traditional circuit field switch conversation process to the application server; the application server records said switch conversation and waits for switching conversation; the mobile station uses group field network to initialize the switch conversation to the application server and carry the mobile user circuit field mark; the application server, based on the mobile user circuit field mark searches for former record, to build conversation with mobile user. The invention can avoid the dependence on the intelligent network, avoid alternative route and save the network resource.
Description
technical field [0001] The present invention relates to the communication field, in particular to a device, system and method for realizing switching between circuit domain and packet domain. Background technique [0002] During the communication process, when the CS domain user is talking, if the user moves from one location area to another location area, a CS domain handover will occur. The purpose of the handover is to enable the user to maintain the continuity of the service when the location moves. Sex, that is, not interrupting the user's call. When the location area that the user moves across is within the jurisdiction of an MSC, it is an intra-office handover. When the location area that the user moves across exceeds the jurisdiction of an MSC, it is an inter-office handover. Different networks are cross-network switching. [0003] Such as figure 1 As shown, it is a schematic flow diagram of intra-office handover in the circuit domain. It can be seen from the figu...
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Application Information
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