Method of implementing voice coding/decoding capability interaction between wireless network and core network
An implementation method and encoding and decoding technology are applied in the field of voice encoding and decoding capability interaction between wireless network and core network, which can solve the problems of wasting TC resources, unable to establish Trfo, unable to provide, etc., so as to improve voice quality and reduce the number of voice encoding and decoding. Effect
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[0024] In the GSM communication system, when the A interface is based on IP bearer, the network structure is as shown in Figure 1, including: mobile terminal 60, base station 50, base station controller 20, media gateway 30, mobile switching center server 10 and mobile terminal 60 Um interface between base station 50, Abis interface between base station 50 and base station controller 20, base station controller 20 and media gateway 30, A interface between mobile switching center server 10, mobile switching center server 10 and media gateway Mc interface between 30. The TC 40 is canceled from the BSC 20, and the TC 40 in the MGW 30 is used to complete the voice rate adaptation function after the call is established.
[0025] As shown in Figure 2, the present invention reuses two BSSAP messages in the existing protocol, namely the resource request message RESOURCE REQUEST and the resource indication message RESOURCE INDICATION, and makes the base station subsystem Base Station ...
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