A method for supporting inter-office mixing connection

Abstract

The utility model relates to a method which supports an interexchange mixed connection, which comprises the existing IP carrying mode, and also adds an interexchange time division multiplexing load mode, in a mobile switching emulation and a media gateway interoffice; and a relation table of interexchange calls and speech channel carrying modes is deployed in the database of a mobile switching emulation, when a user originates a call, the mobile switching emulation chooses a carrying mode used in mobile switching simulation / media gateway interoffice, according to the configuration relation table in the database. The utility model has the advantages that realizing a voice channel bearing and sharing of two physical connections, protecting the investment of the intrinsical circuit time division multiplexing mode for operation business, and utilizing the newly-built IP transmission as much as possible. The utility model is involved but not limited to be used in CDMA2000 mobile communication network.

Description

technical field [0001] The invention relates to the field of mobile communication, in particular to a method for supporting mixed connections between offices. Background technique [0002] In the traditional terminal domain stage (Legacy MS Domain, LMSD) of the CDMA2000 network, the core network first introduced the idea of ​​soft switching and based on the principle of separation of call control and bearer, and replaced the time division multiplexing (TDM) technology with the packet network technology. The circuit domain core network element (MSC) is separated into two functional entities, the mobile switching center emulation unit (MSCe, or mobile switching emulation for short) and the media gateway (MGW). MSCe provides call control and mobility management functions, and MGW provides media bearer and Codec conversion function. [0003] The traditional networking method between MSCe / MGW of CDMA2000 core network equipment is IP bearer. This way, when the original CDMA2000 n...

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Problems solved by technology

[0003] The traditional networking method between MSCe / MGW of CDMA2000 core network equipment is IP bearer. When the original CDMA2000 network is upgraded from MSC to MSCe / MGW, TDM bearer between MSCs is discarded in this way, causing huge It is wasteful, and cannot meet the needs of operators to maximize the use of the original network to realize the transmission of various special services when performing MSC smooth upgrades

[0004] like figure 1 As shown, in the traditional inter-office networking mode, there is only IP bearer between the inter-office session media planes, specifically, there are two types: zz between MSCe and MSCe (here zz and the following The yy and zz are the interface codes defined in 3GPP2X.S0012) The IP link mode of the port is connected, the connection between the MSCe and the MGW is the IP link mode of the xx / 39 port, and the yy port between the MGW and the MGW is carried by the IP link. This kind of networking strictly requires IP bearer for the voice bearer. During the evolution process from MSC to MSCe / MGW, the TDM circuit between MSC offices will be abandoned and not fully utilized, resulting in a huge waste of resources.

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