CN101127740B

CN101127740B - A method for supporting inter-office mixing connection

Info

Publication number: CN101127740B
Application number: CN 200710077044
Authority: CN
Inventors: 曹小飞
Original assignee: ZTE Corp
Current assignee: ZTE Corp
Priority date: 2007-09-11
Filing date: 2007-09-11
Publication date: 2011-07-13
Anticipated expiration: 2027-09-11
Also published as: CN101127740A; WO2009033340A1

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

A kind of interoffice of supporting mixes the method that connects

Technical field

The present invention relates to field of mobile communication, relate in particular to a kind of interoffice of supporting and mix the method that connects.

Background technology

At the conventional terminal territory stage of CDMA2000 network (Legacy MS Domain, LMSD), core network is introduced soft switch thought first and is controlled and the carrying separation principle based on calling out, replace time division multiplexing (TDM) technology with the Packet Based Network technology, traditional circuit domain core network element (MSC) is separated into mobile switching center emulation unit (MSCe, or be called for short and move exchange emulation) and two functional entitys of media gateway (MGW), MSCe provides and calls out control and mobile management function, and MGW provides media bearer and encoding and decoding conversion function.

Traditional networking mode is the IP carrying between the equipment of the core network MSCe/MGW of CDMA2000, this mode is when the upgrading of original CDMA2000 network from MSC to MSCe/MGW, abandoned TDM carrying between the MSC, caused great waste, and can not satisfy operator and when carrying out the MSC smooth upgrade, utilize legacy network to realize the transmission of various characteristic services to greatest extent.

As shown in Figure 1, under the networking mode between traditional interoffice, has only the IP carrying between the interoffice speech channel medium face, specifically, comprise two kinds: between MSCe and the MSCe with zz (zz herein and the yy of back, zz is the interface code name that defines among the 3GPP2X.S0012) mouthful the IP link mode connect, IP link mode with the xx/39 mouth between MSCe and the MGW is connected, be connected with yy mouth IP bearing mode between MGW and the MGW, this networking is strict with the IP carrying for speech path, MSC is in the evolutionary process of MSCe/MGW, the TDM circuit of MSC interoffice will be abandoned, and is not fully utilized, and causes the great wasting of resources.

Summary of the invention

Technical problem to be solved by this invention provides a kind of method of supporting that interoffice mix to connect, makes that the TDM bearing mode coexists with the IP bearing mode between the MSCe/MGW, to make full use of existing network and transfer resource.

Support interoffice of the present invention mixes that the method that connects comprises between the MSCe, interoffice IP bearing mode between the MGW, and is further comprising the steps of:

Step 1: increasing interoffice TDM bearing mode between the MSCe, between the MGW simultaneously;

Step 2: configuration station to station call and speech path mode relation table in the database of MSCe;

Step 3: when the user made a call, MSCe was chosen in the bearing mode that the MSCe/MGW interoffice uses according to the configuration relation table in its database.

Described station to station call and speech path mode relation table comprise:

Load sharing proportionate relationship table between IP office direction and the TDM office direction;

Backup relation table between IP office direction and the TDM office direction;

The IP office direction of switching office and the load sharing proportionate relationship table between the TDM office direction;

The IP office direction of switching office and the backup relation table between the TDM office direction.

Described MSCe selects interoffice speech path mode to comprise following method:

When the MSCe analyzing called number is out calling to the IP office direction, whether the IP carrying that at first determines the IP office direction congested or fault occurs, if judged result is for denying, then, select the speech path mode of the MSCe/MGW interoffice use of outbound call according to the load sharing proportionate relationship table between IP office direction and the TDM office direction; If judged result for being, then according to the backup relation table between IP office direction and the TDM office direction, is selected the speech path mode of the MSCe/MGW interoffice use of outbound call;

When inter-office switchover takes place, when the target office that the MSCe analysis is switched is the IP office direction, whether the IP carrying that at first determines the IP office direction congested or fault occurs, if judged result is for denying, then, select the speech path mode of the MSCe/MGW interoffice use of outbound call according to the IP office direction of switching office and the load sharing proportionate relationship table between the TDM office direction; If judged result is for being, then the IP office direction of switching office and the backup relation table between the TDM office direction, the speech path mode of the MSCe/MGW interoffice use of selection outbound call.

In the present invention, when the interoffice calling is carried out with the IP bearing mode, adopt conversation initialized protocol (Session Initial Protocal between the MSCe, SIP) connect, adopting H.248 between MSCe and the MGW, agreement is connected, (Real Time Transport Protocol RTP) connects to adopt RTP between the MGW.

When the interoffice calling was carried out with the TDM bearing mode, (ISDN User Part, ISUP) signaling method connected or the connection of Telephone User Part (TUP) signaling method, connects with the TDM bearing mode between the MGW with ISUP between the MSCe.

According to method provided by the invention, described IP bearing mode connects and is meant that the IP link connected mode with the zz mouth connects between the MSCe, and the IP link mode with the xx/39 mouth between MSCe and the MGW is connected, and connects with yy mouth IP bearing mode between the MGW.

According to mixed connection method provided by the invention, described TDM carrying is original circuit transmission resource.

The method of the invention has realized the speech path of two kinds of physical connections and has shared; farthest protected the investment of the original circuit TDM of operator mode; utilized newly-built IP transmission again as much as possible; can make full use of existing network and transfer resource; reduce operator's cost and realize various characteristic services; farthest protect benefits of operators, enriched networking mode simultaneously, this method comprises but does not limit and is applied in the CDMA2000 mobile communication network.

Description of drawings

Fig. 1 is the connection diagram of traditional MSCe/MGW interoffice;

Fig. 2 is the connection diagram of MSCe/MGW interoffice provided by the invention.

Embodiment

The present invention is described in further detail below in conjunction with accompanying drawing.

As shown in Figure 2, the invention provides the networking mode of interoffice, interoffice speech channel medium face IP carrying and TDM carrying coexistence, IP link mode and TDM link mode with the zz mouth between the MSCe connect, IP link mode with the xx/39 mouth between MSCe and the MGW is connected, connect with yy mouth IP carrying and TDM bearing mode between the MGW, the characteristic of this networking be speech path between the MSCe/MGW with IP mode and TDM mode and deposit, selecting to use the IP carrying by MSCe control still is the carrying of TDM.

The present invention includes three steps: between step 1, the MSCe, connect between the MGW be MSCe with MGW between only be connected in the IP mode of xx/39 mouth; The while connects and the connection of TDM bearing mode in the IP mode of zz mouth between the MSCe; The while is carried out physical connection with the IP bearing mode dual mode of TDM bearing mode and yy mouth between the MGW; Step 2, in the database of MSCe the configuration corresponding relation table, i.e. load sharing proportionate relationship table between IP office direction and the TDM office direction; Backup relation table between IP office direction and the TDM office direction; The IP office direction of switching office and the IP office direction of load sharing proportionate relationship table between the TDM office direction and switching office and the backup relation table between the TDM office direction; Step 3: when the user made a call, MSCe selected to be to use the TDM bearing mode also to be to use the IP bearing mode according to the configuration relation table in its database.

In the present invention, it is as follows that MSCe selects the concrete grammar of interoffice speech path mode:

When inter-office switchover takes place when, when the target office that the MSCe analysis is switched is the IP office direction, whether the IP carrying that at first determines the Target IP office direction congested or fault occurs, if judged result is for denying, then, select the speech path mode of the MSCe/MGW interoffice use of outbound call according to the IP office direction of switching office and the load sharing proportionate relationship table between the TDM office direction; If judged result is for being, then the IP office direction of switching office and the backup relation table between the TDM office direction, the speech path mode of the MSCe/MGW interoffice use of selection outbound call.

The IP signaling link mode that mixed connection method provided by the invention, described IP mode connect the zz mouth that is meant between the MSCe connects, and the IP signaling link mode of the xx/39 mouth between MSCe and the MGW is connected the IP carrying connection of the yy mouth between the MGW.

In the present invention, when the calling of interoffice is carried out with the IP bearing mode, adopt SIP to connect between the MSCe; Adopt H.248 between MSCe and the MGW that agreement is connected, adopt RTP to connect between the MGW; When the calling of interoffice is carried out with the TDM bearing mode, connect with the ISUP signaling method between the MSCe or connect with the TUP signaling method, connect with the TDM bearing mode between the MGW.

Claims

1. support interoffice to mix the method that connects for one kind, the IP bearing mode that comprise between the mobile switching center emulation unit, interoffice uses between the media gateway is characterized in that, and is further comprising the steps of:

Step 1: increasing interoffice time division multiplexing bearing mode between the mobile switching center emulation unit, between the media gateway simultaneously;

Step 2: configuration station to station call and speech path mode relation table in the database of mobile switching center emulation unit;

Step 3: when the user makes a call, when mobile switching center emulation element analysis called number is out calling to the IP office direction, or the target office of analyze switching is when being the IP office direction, whether the IP carrying that at first determines the IP office direction congested or fault occurs, and according to configuration station to station call in its database and speech path mode relation table, the bearing mode of selecting mobile switching center emulation unit/media gateway interoffice to use in the following ways:

When mobile switching center emulation element analysis called number is out calling to the IP office direction, whether the IP carrying that at first determines the IP office direction congested or fault occurs, if judged result is for denying, then, select the speech path mode of mobile switching center emulation unit/media gateway interoffice use of outbound call according to the load sharing proportionate relationship table between IP office direction and the time division multiplexing office direction; If judged result for being, then according to the backup relation table between IP office direction and the time division multiplexing office direction, is selected the speech path mode of mobile switching center emulation unit/media gateway interoffice use of outbound call;

When the target office that the mobile switching center emulation element analysis switches is the IP office direction, whether the IP carrying that at first determines the IP office direction congested or fault occurs, if judged result is for denying, then, select the speech path mode of mobile switching center emulation unit/media gateway interoffice use of outbound call according to the IP office direction of switching office and the load sharing proportionate relationship table between the time division multiplexing office direction; If judged result is for being, then the IP office direction of switching office and the backup relation table between the time division multiplexing office direction, the speech path mode of the mobile switching center emulation unit of selection outbound call/media gateway interoffice use.

2. support interoffice as claimed in claim 1 mixes the method that connects, and it is characterized in that described station to station call and speech path mode relation table comprise:

Load sharing proportionate relationship table between IP office direction and the time division multiplexing office direction;

Backup relation table between IP office direction and the time division multiplexing office direction;

The IP office direction of switching office and the load sharing proportionate relationship table between the time division multiplexing office direction;

The IP office direction of switching office and the backup relation table between the time division multiplexing office direction.

3. support interoffice as claimed in claim 1 or 2 mixes the method that connects, it is characterized in that, when the interoffice calling is carried out with the IP bearing mode, adopt conversation initialized protocol to connect between the mobile switching center emulation unit, adopt H.248 between mobile switching center emulation unit and the media gateway that agreement is connected, adopt RTP to connect between the media gateway.

4. support interoffice as claimed in claim 1 or 2 mixes the method that connects, it is characterized in that, when the interoffice calling is carried out with the time division multiplexing bearing mode, connect or the connection of Telephone User Part signaling method with the ISUP signaling method between the mobile switching center emulation unit, connect with the time division multiplexing bearing mode between the media gateway.

5. support interoffice as claimed in claim 1 mixes the method that connects, it is characterized in that, described IP bearing mode connection is meant that the IP link connected mode with the zz mouth connects between the mobile switching center emulation unit, IP link mode with the xx/39 mouth between mobile switching center emulation unit and the media gateway is connected, and connects with yy mouth IP bearing mode between the media gateway.