CN1889570A - Mobile communication system, media resource server and load-carrying method under whole IP group network - Google Patents
Mobile communication system, media resource server and load-carrying method under whole IP group network Download PDFInfo
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Abstract
A mobile communication system of total IP multinetwork is featured as decomposing function of internal MGW in mobile network in order to remove off internal MGW in mobile network by adding media resource server in network, utilizing added media resource server to finalize media resource providing function being provided originally by MGW and utilizing base station controller to finalize load-carry path setting up function being set up originally by MGW.
Description
Technical field
The present invention relates to the technology in the whole IP group network, mobile communication system, Media Resource Server and bearing method under particularly a kind of whole IP group network.
Background technology
From the development of present telecommunications network, IP will progressively replace traditional TDM, ATM becomes dominant force.From mobile communication, to WCDMA R99, arrive R4 and R5 from GSM again, the network carrying also carries out the transition to IP from TDM, ATM.WCDMA R99 has inherited traditional circuit voice exchange, and on bearer types, its Iu mouth is supported ATM; The circuit domain of WCDMA R4 (CS) has realized separating of carrying and control, supports IP on bearer types; 3GPP R4CS adopts separation architecture, and core net carrying and signaling all can be transmitted based on the IP packetizing.Fig. 1 is the system construction drawing of the mobile communications network of R4 stage all-IP framework.As shown in Figure 1, this network is made of core net 100,3G wireless access network UTRAN 110 and BSS 120,2G mobile radio communication GSM/R99PLMN 130 and conventional fixed net PSTN/ISDN 140.Support among the mobile network of all-IP framework that in the R4 stage mobile switching centre originally (MSC) is divided into mobile soft switch (MSC Server) 101 and 1,02/,103 two equipment of media gateway (MGW), be respectively applied for signaling control and carrying and handle.
Wherein, MGW is the switching equipment of the loading end of 3G WCDMA R4 core net, is positioned at the boundary that 3G CS core net 100 is led to wireless access network and conventional fixed net PSTN/ISDN, is the bearer path of Iu/A interface and PSTN/PLMN.The business logic processing that the not responsible any mobile subscriber of MGW is correlated with, but under the control of the resource control command that comes from MSC Server and GMSC Server, finish functions such as media conversion, carrying control and operation exchange, as GSM/UMTS various types of voice codec, Echo Cancellation, silence detection, playback, collect the digits etc.From its function that provides, MGW mainly is responsible for:
1. access function: connect wireless access network UTRAN/BSS and conventional fixed net PSTN/ISDN;
2. function of exchange: be call setup carrying and route;
3. media conversion and language process function are provided by TC (Transcoder) unit of MGW;
4. playback and collecting the digits;
5. conference telephone: provide by the meeting chip.
Supposing has a portable terminal to carry out in the network shown in fig. 1 to the business of portable terminal, and its load bearing process is as follows:
When setting up bearer path, the user terminal of originating end sends signaling to the RNC 111 that makes a start, the RNC 111 that makes a start will carry and set up signaling and send to mobile soft switch 101, mobile soft switch is according to this signaling, set up bearer path, with the bearer path of setting up 121 of RNC 111 and BSC is example, and the foundation of its bearer path is that segmentation is carried out.
The route of make a start 103 of RNC 111 and receiving end MGW is set up at first mobile soft switch 101: the information of the MGW 102 that will make a start sends to the RNC 111 that makes a start, and the information of RNC 111 and receiving end MGW 103 sent to the MGW 102 that makes a start, after the RNC 111 that makes a start receives the information of the MGW 102 that makes a start, the address of itself and self is bound, after the MGW 102 that makes a start receives the information of RNC 111 and receiving end MGW 103, the network address of RNC 111 and receiving end MGW 103 is bound, be used for characterizing a bearer path that arrives receiving end MGW 103 by the RNC 111 that makes a start through the MGW 102 that makes a start;
Mobile then soft switch 101 is set up receiving end BSC 121 and the route of 102 of the MGW of making a start: the information of receiving end MGW 103 is sent to receiving end BSC 121, and the information of the BSC 121 and the MGW 102 that makes a start sent to receiving end MGW 103, after receiving end BSC 121 receives the information of receiving end MGW 103, the address of itself and self is bound, after receiving end MGW 103 receives the information of the BSC 121 and the MGW 102 that makes a start, the network address of the BSC 121 and the MGW 102 that makes a start is bound, be used for characterizing a bearer path that arrives the MGW 102 that makes a start by the BSC 121 that makes a start through receiving end MGW 103.
Such two sections bearer paths continue, and have just constituted the bearer path between RNC 111 and the BSC 121.
The process that data are transmitted on the bearer path of setting up is as follows:
When the RNC 111 that makes a start will send packet to receiving end BSC 121, make a start RNC 111 according to the address binding record in it, data are sent to the MGW 102 that makes a start, when the MGW 102 that makes a start receives the packet that the RNC 111 that makes a start sends, check the address binding record, then packet is sent to receiving end MGW 103 places with RNC 111 binding, after receiving end MGW 103 receives this packet, send it to and receiving end BSC 121 places of MGW 102 bindings of making a start.Process when the reverse transfer data is opposite with it, but all is to transmit along the bearer path of having set up.
In above-mentioned communication process, MGW mainly is under the control of mobile soft switch, sets up the bearer path of segmentation for business, finishes access and the function of exchange of make a start RNC and receiving end BSC, and in the all-IP framework, carrying that MGW provides and function of exchange can be replaced by the IP bearer network fully.At first for the function of exchange of MGW, under the complete IP network framework, Media Streams such as voice are all carried in network by the packet mode, and finish the function of exchange by the router in the IP network, arrive the place of appointment.Next is for the access function of MGW, except that being positioned at the borderline MGW of heterogeneous networks, the MGW of mobile network inside, its access function is also because the framework of all-IP, particularly there is interface in the IPization of A mouth and Iu mouth and weakening between the router of RNC/BSC and IP kernel heart net, packet directly can be sent to the router in the IP kernel heart net fully, thereby directly enter IP kernel heart net by the IP mode, and needn't pass through MGW.In addition, in the R4 stage a kind of TrFO technology is proposed, when this technology of application, each node in the network can be before portable terminal is set up to the business of portable terminal be just held consultation to the type and the pattern of the encoding and decoding of transmitting-receiving two-end, if the encoding and decoding that use at two ends are the same, for example all be the AMR coding, then this business can be fully without encoding and decoding conversion.This TrFO The Application of Technology makes the medium conversion facilities of MGW further weaken.Under the situation that TrFO takes place, participation that need not codec unit in the bearer path.And the major function that MGW provided of this moment only limits to collect the digits, playback, conference telephone.Be in when stablizing conversation state, bearing link can directly be finished the direct exchange of RNC/BSC to RNC/BSC not by the processing of MGW fully, and the speech coding by IP bearer network transmission compression.And according to network configuration shown in Figure 1 and business realizing process above-mentioned, though the function of MGW is weakened widely by the network of all-IP, but MGW still exists, and packet still will pass through MGW in transmission course, so just cause the waste of resource distribution and the increase of routing node.
Summary of the invention
In view of this, first main purpose of the present invention is, the mobile communication system under a kind of whole IP group network is provided, thereby realizes the reasonable resources configuration.
Simultaneously, the present invention also provides the bearing method of mobile network internal under a kind of whole IP group network, thereby realizes the reasonable resources configuration.
In addition, the present invention provides the Media Resource Server under a kind of whole IP group network again, thereby realizes the reasonable resources configuration.
For realizing above-mentioned first goal of the invention, adopted following technical scheme:
Mobile communication system under a kind of whole IP group network comprises: mobile soft switch, base station controller, it is characterized in that, and further comprise Media Resource Server;
Described mobile soft switch, set up order according to the carrying that described base station controller sends, media resource in distribution or the deletion Media Resource Server, for business is set up the bearer path that comprises or do not comprise Media Resource Server, and the nodal information in the bearer path of setting up is sent to the node that comprises in the bearer path;
Described Media Resource Server is according to the nodal information in the bearer path of mobile soft switch transmission, for business provides media resource;
Described base station controller, reception comes from the signaling of user terminal, and sends carrying foundation order to described mobile soft switch, according to the nodal information in the bearer path of mobile soft switch transmission; Send and receive the packet of business along bearer path, and be transmitted to user terminal.
Preferably, described Media Resource Server comprises: interface unit, resource processing unit and media resource pond;
Described interface unit, realize interface with mobile soft switch, receive the resource request that described mobile soft switch sends, and according to the resource of this request to resource processing unit transmission requirement distribution or release, receive the result that resource information that is assigned with that described resource processing unit sends or resource discharge then, return replying of resource request to described mobile soft switch again; Receive and write down the nodal information in the bearer path that mobile soft switch sends;
Described resource processing unit, handle the distribution and the management of media resource in the Media Resource Server, the resource that the requirement that sends according to described interface unit distributes or discharges, from described media resource pond, select adequate resources or discharge the resource of appointment, and the result that the resource information that is assigned with or resource discharge is sent to described interface unit;
Described media resource pond provides media resource, and the packet that the bearer path along record is routed to itself carries out data processing, and sends to base station controller according to the resource of distributing.
Preferably, the communication protocol between described interface unit and the described mobile soft switch can for: H.248 or Session Initiation Protocol.
Preferably, described media resource pond can comprise: encoding and decoding resource pool and playback number receiving resource pond;
Described encoding and decoding resource pool provides the encoding and decoding resource, and the packet that sends to itself for the base station controller of making a start provides encoding and decoding to handle;
Described playback number receiving resource pond, for business provides playback to collect the digits and the video conferencing resource, the data that send to itself for base station controller provide image processing, or form the IP bag of playback, and operation collects the digits.
Preferably, encoding and decoding resource pool and playback number receiving resource pond can be closed and be located in the equipment, perhaps are arranged in the distinct device respectively.
For realizing above-mentioned second goal of the invention, adopted following technical scheme:
The bearing method of mobile network internal is characterized in that under a kind of whole IP group network, further comprises Media Resource Server in IP kernel heart net, and this method comprises:
A, when bearer path is set up in mobile network inside, mobile soft switch is set up order according to the carrying that the base station controller that receives sends, be traffic assignments or deletion media resource from Media Resource Server, set up the bearer path that comprises or do not comprise Media Resource Server for business;
B, mobile soft switch send to the node that comprises in the bearer path with the information of node in the bearer path of setting up;
C, along bearer path transmission data, forward the data to again in the process of user terminal, if bearer path comprises Media Resource Server, then provide media resource for this business by Media Resource Server.
Preferably, step b may further include: after the information of the node in receiving bearer path of the node in each bearer path, write down this bearer path.
Preferably, this bearer path of described record can for: node is bound the nodal information that receives.
Preferably, described media resource can comprise encoding and decoding resource, playback number receiving resource and video conferencing resource.
The carrying that receives when mobile soft switch is set up order when showing that this business only need be distributed the playback resource, preferably, described in the step a for business set up bearer path can for:
The media resource that mobile soft switch needs for this traffic assignments from Media Resource Server, foundation is by the bearer path of Media Resource Server to the base station controller of making a start, and the node that comprises in the described bearer path of step b is Media Resource Server and the base station controller of making a start.
Preferably, the Media Resource Server described in the step c can send to the base station controller of making a start with the playback IP bag that himself forms for: Media Resource Server for this business provides media resource.
The carrying that receives when mobile soft switch is set up order when showing that this service needed is distributed encoding and decoding resource or video conferencing resource, preferably, described in the step a for business set up bearer path can for:
The media resource that mobile soft switch needs for this traffic assignments from Media Resource Server, foundation is by the bearer path of the base station controller of the base station controller of making a start to Media Resource Server to receiving end, and the node that comprises in the described bearer path of step b is the base station controller of Media Resource Server and transmitting-receiving two-end.
Preferably, the Media Resource Server described in the step c for this business provides media resource can be for: packet during through Media Resource Server, Media Resource Server carries out encoding and decoding processing or image processing to packet.
Preferably, the described media resource that needs for traffic assignments can for:
A10, mobile soft switch send resource allocation request according to the media resource of service needed to Media Resource Server;
A11, Media Resource Server allocation medium resource, and return resource allocation request to mobile soft switch and reply, if the resource allocation success is carried the resource information of being distributed during then this is replied,, carry the reason of failure during then this is replied if resource allocation is failed.
Preferably, described resource information can be the IP address and the port numbers of media resource correspondence.
The carrying that receives when mobile soft switch is set up order when showing this service needed deletion media resource, preferably, described in the step a for business set up bearer path can for:
The resource of appointment is deleted in a1, mobile soft switch for this business from Media Resource Server;
A2, if the deletion resource after, the media resource that still has other in this business, then set up bearer path, and the node that comprises in the bearer path described in the step b is the base station controller of Media Resource Server and transmitting-receiving two-end by the base station controller of the base station controller of making a start to Media Resource Server to receiving end; If do not have other media resource in this business, then set up by the bearer path of the base station controller of making a start, and the node that comprises in the bearer path described in the step b be the base station controller of transmitting-receiving two-end to the base station controller of receiving end.
Preferably, described in the step a1 for the resource of this business deletion appointment can for:
A20, mobile soft switch send resource release request to Media Resource Server;
A21, Media Resource Server discharge resource, and return resource release request to mobile soft switch and reply after receiving the resource release request of mobile soft switch transmission, if resource discharges successfully, then this is replied and represents that resource discharges successfully, if the improper release of resource is carried cause value during then this is replied.
For realizing above-mentioned the 3rd goal of the invention, adopted following technical scheme:
Media Resource Server under a kind of whole IP group network is characterized in that, this Media Resource Server comprises interface unit, resource processing unit and media resource pond;
Described interface unit, realize interface with outside network device, receive the resource request that outside network device sends, and according to the resource of this request to described resource processing unit transmission requirement distribution, receive the result that resource information that is assigned with that described resource processing unit sends or resource discharge then, return replying of resource request to described outside network device again; When bearer path comprises Media Resource Server, receive the nodal information in the bearer path that mobile soft switch sends;
Described resource processing unit, handle the distribution and the management of media resource in the Media Resource Server, the resource that the requirement that sends according to described interface unit distributes, from described media resource pond, select adequate resources or discharge corresponding resource, and the result that the resource information that is assigned with or resource discharge is sent to described interface unit;
Described media resource pond provides media resource, and the packet that the bearer path along record is routed to itself carries out data processing according to the resource of distributing, and perhaps self forms the IP bag that playback collects the digits.
Preferably, described media resource pond can comprise: encoding and decoding resource pool and playback number receiving resource pond;
Described encoding and decoding resource pool provides the encoding and decoding resource, and the packet that sends to itself for the base station controller of making a start provides needed encoding and decoding to handle;
Described playback number receiving resource pond, for business provides playback to collect the digits and the video conferencing resource, the data that send to itself for the base station controller of making a start provide video conferencing to handle, or form the IP bag that playback collects the digits.
Preferably, encoding and decoding resource pool and playback number receiving resource pond can be closed and be located in the equipment, perhaps are arranged in the distinct device respectively.
As seen from the above technical solution, the present invention is by having increased Media Resource Server in network, the function of the MGW of mobile network inside is decomposed, thereby the MGW of mobile network inside is removed from network, the Media Resource Server that increases is finished the function that former MGW provides media resource, finishes the function that former MGW bearer path is set up by base station controller.When setting up bearer path, mobile soft switch is set up the bearer path that comprises or do not comprise Media Resource Server according to business to the demand status of resource, and the nodal information in the bearer path of setting up is sent to base station controller.Like this, when data are transmitted between base station controller, just transmit along the bearer path of setting up.When comprising Media Resource Server in the bearer path, promptly need Media Resource Server that data are handled, then packet is routed to this Media Resource Server place along the bearer path of setting up, and after handling, sends to the base station controller of receiving end; When not comprising Media Resource Server in the bearer path, promptly do not need media resource, then packet needn't pass through Media Resource Server, and directly utilizes router in the IP kernel heart net to route a data packet to the base station controller of receiving end.Base station controller is given user terminal with data forwarding again.
Like this, in system of the present invention, the setting of Media Resource Server is compared with the setting of MGW in the existing system, former MGW is responsible for the access function of RNS nearby, therefore do not need share media resource, so MGW is provided with the media resource quantity that quantity depends on capacity and user's needs of network in network; Media Resource Server among the present invention only is responsible for providing media resource, so the setting of Media Resource Server does not need to consider access capacity, and the needed media resource quantity of user in the taking into account system only, therefore the setting of Media Resource Server will be less than the setting of the MGW of mobile network inside in the existing system greatly, it focuses on a plurality of media resources in the Media Resource Server, can realize resource-sharing, reduce the configuration of redundant resource, simultaneously for the business data packet that does not need media resource, need in bearer path, not increase this node of Media Resource Server, and significantly reduce the circuitous of route.
Description of drawings
Fig. 1 is the system construction drawing of the mobile communications network of R4 stage all-IP framework.
Fig. 2 is the mobile communication system structure chart of the realization whole IP group network of the embodiment of the invention one.
Fig. 3 is the structure chart of media gateway resource server of the realization whole IP group network of the embodiment of the invention one.
Fig. 4 is the flow chart of the bearing method of mobile network internal under the whole IP group network of the embodiment of the invention one.
Fig. 5 is the mobile communication system structure chart of the realization whole IP group network of the embodiment of the invention two.
Fig. 6 is the structure chart of media gateway resource server of the realization whole IP group network of the embodiment of the invention two.
Fig. 7 is the flow chart of the bearing method of mobile network internal under the whole IP group network of the embodiment of the invention two.
Embodiment
For making purpose of the present invention, technical scheme and advantage clearer, below in conjunction with accompanying drawing, the embodiment that develops simultaneously illustrates the specific embodiment of the present invention.
Basic thought of the present invention is: by increased Media Resource Server in network, the function of the MGW of mobile network inside is decomposed, thereby the MGW of mobile network inside is removed from network, the Media Resource Server that increases is used to finish the function that former MGW provides media resource, finishes former MGW bearer path by base station controller and sets up function.
Particularly, when setting up bearer path, mobile soft switch is according to whether needs comprise Media Resource Server in the demand status decision bearer path of business to resource, and the information of node in the bearer path of setting up sent to base station controller, carry out address binding by base station controller, characterize bearer path.Like this, when data are transmitted between base station controller, just transmit along the bearer path that writes down in the base station controller.When comprising Media Resource Server in the bearer path, promptly need Media Resource Server that data are handled, then packet is routed to this Media Resource Server place, after handling, sends to the base station controller of receiving end; When not comprising Media Resource Server in the bearer path, promptly do not need media resource, then packet needn't pass through Media Resource Server, and directly utilizes router in the IP kernel heart net to route a data packet to the base station controller of receiving end.Base station controller is given user terminal with data forwarding again.
Embodiment one:
Fig. 2 is the mobile communication system structure chart under the realization whole IP group network of the embodiment of the invention one.As shown in Figure 2, this system comprises: mobile soft switch 201, Media Resource Server 202, base station controller 1 205 and base station controller 2206 in the IP kernel heart net.Dotted line is represented among Fig. 2 is signaling transmission when setting up bearer path, and what solid line was represented is the transfer of data of carrying out on bearer path.Wherein, the formation of Media Resource Server 202 and with the external equipment annexation as shown in Figure 3.
As shown in Figure 2, in mobile communications network inside, base station controller 1 203 and base station controller 2 204, when setting up bearer path,, receive the signaling that user terminal sends as the originating end of setting up bearer path, according to this signaling, will carry the foundation order and send to mobile soft switch 201 again; Also receive IP addresses of nodes in the bearer path of the foundation that mobile soft switch 201 sends, and this bearer path that characterizes foundation is bound in these IP addresses.When utilizing the bearer path transmission data of setting up, the bearer path of edge record sends and receives professional packet, and is transmitted to user terminal.
Mobile soft switch 201, set up order according to the carrying that base station controller 1 201 sends, resource needed operation when setting up bearer path, comprise the media resource in distribution or the deletion Media Resource Server 202, then set up needed bearer path for business, and IP addresses of nodes in the bearer path of setting up is sent to the node that comprises in this bearer path.When the resource operation that carries out is media resource in the allocation medium Resource Server 202, then comprise Media Resource Server in this bearer path, send IP addresses of nodes in the bearer path to Media Resource Server, wherein, the IP address of Media Resource Server is the IP address of the media resource that is assigned with; When the resource operation that carries out is the media resource in the deletion Media Resource Server 202, and after this media resource is deleted, when not having other media resource in this business, then do not comprise Media Resource Server in this bearer path, can not send IP addresses of nodes in the bearer path to Media Resource Server.
Media Resource Server 202, when setting up bearer path, under the control of mobile soft switch 201, be traffic assignments or deletion media resource, receive IP addresses of nodes in the bearer path of the foundation that mobile soft switch 201 sends, and this bearer path that characterizes foundation is bound in these IP addresses.When comprising himself in the bearer path of setting up, for business provides media resource, promptly the packet that base station controller 1 203 or base station controller 2 204 are sent to itself carries out data processing or itself produces playback IP bag etc.
In the present embodiment, Media Resource Server is as the node in the system, its working method and with network in other equipment annexation as shown in Figure 2.Below in conjunction with Fig. 3, introduce inner each unit of Media Resource Server 300 function and with the annexation of external equipment.As shown in Figure 3, this Media Resource Server 300 comprises: interface unit 301, resource processing unit 302, media resource pond 303.Wherein, media resource pond 303 is made of encoding and decoding resource pool 303a and playback number receiving resource pond 303b.
In Media Resource Server 300, interface unit 301 finish with network in mobile soft switch 310, base station controller 320 and 330 interface.H.248 the interface communications protocol that interface unit 301 and mobile soft switch are 310 adopts, when setting up bearer path, finish and the interface of 310 of mobile soft switch, it receives the resource request that mobile soft switch 310 sends, and sends the requirement distribution or discharge media resource to resource processing unit 302 according to this request.When comprising Media Resource Server in the bearer path of setting up, IP addresses of nodes in the bearer path that the mobile soft switch 310 of interface unit 301 receptions sends, and write down this bearer path.Interface unit 301 adopts the IP agreement with the interface communication of base station controller 320 and 330, when utilizing the bearer path transmission data of setting up, the reception packet that base station controller 320 sends of making a start, and this packet sent to media resource pond 303, also the packet that media resource pond 303 is sent sends to receiving end base station controller 330.
In the present embodiment, encoding and decoding resource pool and playback number receiving resource pond concentrate in the physical equipment, can certainly be separately positioned in the different physical equipments.In addition, when bearer path comprises Media Resource Server, binding for the network address in the Media Resource Server is finished by interface unit, packet is when being routed to Media Resource Server, also be to enter by interface unit, the media resource place that is sent to distribution then handles.When packet enters Media Resource Server certainly, also can directly insert the media resource place that is assigned with, as long as the interface protocol of router and media resource in the good IP kernel heart of the predefined net, and the binding of the network address also can utilize the media resource pond to finish.
Fig. 2 and Fig. 3 represent to realize the mobile communication system under the whole IP group network and the structure of Media Resource Server.Be presented in below in Fig. 2 and the system and Media Resource Server shown in Figure 3, the inner carrying of mobile network is set up and the whole flow process of transfer of data.
Fig. 4 is the flow chart of the bearing method of mobile network internal under the whole IP group network of the embodiment of the invention one.Figure 4 shows that caller dials a called number, the process that called off-hook is replied.As shown in Figure 4, this flow process comprises:
Step 401, the RNC1 of caller sends carrying to mobile soft switch and sets up order.
Step 402 is set up bearer path, distributes the playback resource.If bearer path sets up successfully, then execution in step 403 and subsequent step thereof, otherwise execution in step 404.
In this step, mobile soft switch is set up order according to the carrying that receives, and analyzes that draw will be for caller distributes the playback resource, and sets up unidirectional bearer path.Specifically comprise following three steps:
Step 402a, mobile soft switch sends resource allocation request to Media Resource Server;
Step 402b, Media Resource Server distributes the playback resource;
In this step, after Media Resource Server receives resource allocation request, select suitable playback resource, distribute to caller;
Step 402c, Media Resource Server returns resource allocation request to mobile soft switch and replys, if the resource allocation success, carry the resource information of being distributed during then this is replied, if resource allocation is failed, carry the reason of failure during then this is replied, and bearer path is set up failure.
So far, the flow process of bearer path foundation finishes.
Step 403, mobile soft switch sends bearer path information to the RNC1 and the Media Resource Server of caller, and execution in step 405.
Because what prime flow table showed is the flow process of distributing the playback resource, therefore the bearer path of setting up is the unidirectional route of the Media Resource Server RNC1 that arrives caller.In this step, mobile soft switch sends bearer path information to the RNC1 and the Media Resource Server of caller, can be the IP address information of the RNC1 and the Media Resource Server of caller, after RNC1 and Media Resource Server receive this information, these two IP addresses of nodes are bound, characterize this bearer path.
Step 404, mobile soft switch is set up failure to the RNC1 of caller transmit path, finishes the carrying flow process.
In this step, the RNC1 of caller receives after the path sets up failure, is transmitted to user terminal.
In this flow process, suppose that the path sets up successfully, continue to carry out following step.
Step 405, Media Resource Server send to playback IP bag the RNC1 of caller.
In this step, Media Resource Server forms the IP bag of ring-back tone or CRBT sound according to the resource of distributing, and along the bearer path that writes down in the Media Resource Server, promptly Media Resource Server sends to playback IP bag the RNC1 of caller to the RNC1 of caller.RNC1 sends to user terminal with playback IP bag, and user terminal just can have been heard ring-back tone or CRBT.
After supposing the called calling of discerning caller, off-hook is answered, and then in fact requires to set up caller and called 's bearer path, deletes the playback resource on original bearer path.
Step 406, called RNC2 sends carrying to mobile soft switch and sets up order.
In this step, called off-hook action has promptly sent carrying to mobile soft switch and has set up order.
Step 407 is set up bearer path, deletion playback resource.
If bearer path sets up successfully, then execution in step 408 and subsequent step thereof, otherwise execution in step 409.
In this step, mobile soft switch is set up order according to the carrying that receives, and analyzes to draw and will delete the playback resource, and set up the RNC1 of single caller and the two-way bearer path between called RNC2.Specifically comprise following three steps:
Step 407a, mobile soft switch sends resource release request to Media Resource Server;
Step 407b, Media Resource Server discharges the playback resource;
In this step, after Media Resource Server receives resource allocation request, discharge the playback resource of appointment;
Step 407c, Media Resource Server returns resource release request to mobile soft switch and replys, if resource discharges successfully, then this is replied and represents that resource discharges successfully, if the improper release of resource is carried cause value during then this is replied, and bearer path is set up failure.
So far, the flow process of bearer path foundation finishes.
Step 408, mobile soft switch sends bearer path information to the RNC1 of caller and called RNC2, and execution in step 410.
When not having other media resource in this calling, the bearer path that success is set up in the step 407 is the two-way route between caller RNC1 and called RNC2, and promptly the node that comprises in the bearer path is caller RNC1 and called RNC2.In this step, mobile soft switch sends bearer path information to the RNC1 of caller and called RNC2, can be the RNC1 of caller and called RNC2, after RNC1 and RNC2 receive this information, these two IP addresses of nodes are bound, characterize this bearer path.
Step 409, mobile soft switch is set up failure to called RNC2 transmit path, finishes the carrying flow process.
In this flow process, suppose that the path sets up successfully, continue to carry out following step.
Step 410 is transmitted data between RNC1 and RNC2.
It is professional to begin conversation etc. between RNC1 and the RNC2.When between the two transfer of data being arranged, then along the bearer path transmission of having set up.Because the bearer path of setting up is that RNC1 is to the two-way route between RNC2, therefore the packet between the two can arrive the other side by any accessibility route, the route of packet can be finished by the router in the IP kernel heart net, needn't pass through Media Resource Server again.
As seen by above-mentioned, for the use aspect of playback resource, Media Resource Server is identical with the function of MGW, can substitute MGW fully.In fact, for the use of all media resources, Media Resource Server is all identical with MGW function in this respect.
Embodiment two:
Fig. 5 is the mobile communication system structure chart that media gateway resource is optimized under the realization whole IP group network of the embodiment of the invention two.As shown in Figure 5, this system comprises: mobile soft switch 501, Media Resource Server 502, base station controller 1 503 and base station controller 2 504 in the IP kernel heart net.Wherein, Media Resource Server 502 comprises encoding and decoding Resource Server 502a and playback number receiving resource server 502b.In the present embodiment, encoding and decoding Resource Server 502a is two different physical equipments with playback number receiving resource server 502b, can be arranged in the different nodes place of network, and this point is with different among the embodiment one.
As shown in Figure 5, in the present embodiment, mobile soft switch 501, base station controller 1 503 and base station controller 2 504 respectively with embodiment one in the composition structure and the annexation of mobile soft switch 201, base station controller 1 203 and base station controller 2 204 all identical.In the system configuration of present embodiment, be Media Resource Server 502 with the difference of embodiment one.Wherein, encoding and decoding Resource Server 502a, when setting up bearer path, under the control of mobile soft switch 201, be traffic assignments or deletion encoding and decoding resource, receive IP addresses of nodes in the bearer path of the foundation that mobile soft switch 501 sends, and this bearer path that characterizes foundation is bound in these IP addresses.When comprising himself in the bearer path of setting up, for business provides the encoding and decoding resource, promptly the packet that base station controller 1 203 or base station controller 2 204 are sent to itself carries out encoding and decoding and handles.The function class of playback number receiving resource server 502b and encoding and decoding Resource Server 502a seemingly, what difference was its processing is that playback collects the digits and the resource operation and the bearer path record of video conferencing aspect.
Fig. 6 show Media Resource Server 502 among Fig. 5 composition and with the annexation of outside network device.As shown in Figure 6, this Media Resource Server 600 comprises: encoding and decoding Resource Server 600a and playback number receiving resource server 600b.Wherein, encoding and decoding Resource Server 600a comprises interface unit 601a, resource processing unit 602a and encoding and decoding resource pool 603a, and playback number receiving resource server 600b comprises interface unit 601b, resource processing unit 602b and playback number receiving resource pond 603b.
Encoding and decoding Resource Server 600a is identical with mode with the operation principle of playback number receiving resource server 600b, and difference only is that they provide different with the resource of handling.Be that example is introduced its embodiment with encoding and decoding Resource Server 600a below.
In encoding and decoding Resource Server 600a, interface unit 601a, rm-cell 602a and encoding and decoding resource pool 603a respectively with embodiment one in structure and the annexation of interface unit 301, rm-cell 302 and encoding and decoding resource pool 303a basic identical, difference is: communication protocol that interface unit 601a and mobile soft switch are 610 adopts Session Initiation Protocol, and interface unit 601a does not exist and transmitting-receiving two-end base station controller 620 and 630 communicate by letter; Encoding and decoding resource pool 303a finishes the communication between transmitting-receiving two-end base station controller 620 and 630, promptly receives the packet that the base station controller 620 of making a start sends, and after handling through encoding and decoding, sends receiving end base station controller 630.
The 26S Proteasome Structure and Function of playback number receiving resource pond 600b and encoding and decoding resource pool 600a is similar, just handles playback number receiving resource and video conferencing resource, repeats no more here.
The difference of present embodiment and embodiment one is, the encoding and decoding resource is arranged in different physical equipment encoding and decoding Resource Servers and playback number receiving resource server with the playback number receiving resource, to being routed to the packet of itself in the IP kernel heart net, be directly to send to the media resource place that is assigned with to handle, do not need forwarding through interface unit.
Fig. 5 and Fig. 6 represent to realize in the embodiment of the invention two system of media gateway resource optimization under the whole IP group network and the structure of Media Resource Server.Be presented in Fig. 5 and the system and Media Resource Server shown in Figure 6 the carrying foundation of mobile network inside and the whole flow process of transfer of data below.
Fig. 7 is the flow chart of the bearing method of mobile network internal under the whole IP group network of the embodiment of the invention two.Shown in Figure 7 is the process of setting up carrying and transmission data for the business between different two user terminals of a coded system.As shown in Figure 7, this flow process comprises:
Step 701, the RNC1 that initiates the user terminal of carrying foundation sends carrying to mobile soft switch and sets up order.
Step 702 is set up bearer path, distributes the encoding and decoding resource.If bearer path sets up successfully, then execution in step 703 and subsequent step thereof, otherwise execution in step 704.
In this step, mobile soft switch is set up order according to the carrying that receives, and analyzes to draw and will distribute the encoding and decoding resource, and set up the two-way bearer path between RNC1 and RNC2.Specifically comprise following three steps:
Step 702a, mobile soft switch sends resource allocation request to Media Resource Server;
Step 702b, Media Resource Server distributes the encoding and decoding resource;
In this step, after Media Resource Server receives resource allocation request, select suitable encoding and decoding resource;
Step 702c, Media Resource Server returns resource allocation request to mobile soft switch and replys, if resource allocation success, carry the IP address and the port numbers of the encoding and decoding resource of being distributed during then this is replied, if resource allocation failure, carry the reason of failure during then this is replied, and bearer path is set up failure.
So far, the flow process of bearer path foundation finishes.
Step 703, mobile soft switch sends bearer path information to RNC1, RNC2 and Media Resource Server, and execution in step 705.
Because what prime flow table showed is the loading establishing process that needs the encoding and decoding resource, therefore the bearer path of setting up is that RNC1 is through arriving the two-way route of RNC2 behind the Media Resource Server.In this step, mobile soft switch sends bearer path information to RNC1, RNC2 and Media Resource Server, can be the IP address information of RNC1, RNC2 and Media Resource Server, after these three nodes receive this information, the IP address is bound, characterize this bearer path.
Step 704, mobile soft switch is set up failure to the RNC1 transmit path of the user terminal of initiating the foundation carrying, finishes the carrying flow process.
In this step, RNC1 receives after the path sets up failure, is transmitted to user terminal.
In this flow process, suppose that the path sets up successfully, continue to carry out following step.
When RNC1 has data to send to RNC2, execution in step 705 and step 706; When RNC2 has data to send to RNC1, execution in step 707 and step 708.
Step 705, RNC1 sends to Media Resource Server with packet.
In this step, this packet is routed to the function of Media Resource Server and is finished by the router of IP kernel heart net in IP kernel heart net.
Step 706, Media Resource Server sends to RNC2 with treated packet.
In this step, Media Resource Server receives the data of RNC1, according to the encoding and decoding resource of distributing packet is carried out encoding and decoding and handles, and it is processed into the accessible mode of RNC2, sends to RNC2 then.
Step 707, RNC2 sends to Media Resource Server with packet.
Step 708, Media Resource Server sends to RNC1 with treated packet.
So far, the carrying flow process finishes.Deletion for the encoding and decoding resource is identical with the deletion of playback resource among the embodiment one, repeats no more here.In actual applications, the deletion of other media resources also all is to follow same step.Behind a certain media resource of deletion, the media resource demand that also has other in the business, still comprise Media Resource Server so in the bearer path, promptly whether Media Resource Server is present in the bearer path, depends on the professional processing that whether needs through media resource.
Above the mode that Media Resource Server provides playback resource and encoding and decoding resource has been described respectively among two embodiment, as can be seen, the principle when it provides resource is identical with former MGW with flow process.In fact, for other media resource, the principle when it provides resource is also identical with former MGW with flow process, also is carry out signaling mutual as providing of, its number receiving resource, and video conferencing also is that in many ways bearer path is tied to together, carries out operation associated.Here just give unnecessary details no longer one by one.
Technical scheme of the present invention is not limited only to the mobile communication network of 3G, all is suitable for for systems such as NGN, B3G.
By top specific description of embodiments of the present invention as seen, the present invention has removed the MGW of mobile network inside in network, increased Media Resource Server.And former MGW provides the function of media resource to be finished by Media Resource Server, and the flow process when its workflow provides media resource with former MGW is identical; And mobile soft switch is when setting up bearer path, no longer necessarily utilizing former MGW to finish inserts and routing function, but mainly finish access by base station controller, router in the IP kernel heart net is finished routing function, when comprising Media Resource Server in the bearer path, Media Resource Server is also finished part and is inserted and routing function.This networking mode makes a plurality of media resources focus in the Media Resource Server, the height that can realize media resource is shared, reduce the configuration of redundant resource, simultaneously for the business data packet that does not need media resource, need in bearer path, not increase this node of Media Resource Server, significantly reduce the circuitous of route.
Being preferred embodiment of the present invention only below, is not to be used to limit protection scope of the present invention.Within the spirit and principles in the present invention all, any modification of being done, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (20)
1, the mobile communication system under a kind of whole IP group network comprises: mobile soft switch, base station controller, it is characterized in that, and further comprise Media Resource Server;
Described mobile soft switch, set up order according to the carrying that described base station controller sends, media resource in distribution or the deletion Media Resource Server, for business is set up the bearer path that comprises or do not comprise Media Resource Server, and the nodal information in the bearer path of setting up is sent to the node that comprises in the bearer path;
Described Media Resource Server is according to the nodal information in the bearer path of mobile soft switch transmission, for business provides media resource;
Described base station controller, reception comes from the signaling of user terminal, and sends carrying foundation order to described mobile soft switch, according to the nodal information in the bearer path of mobile soft switch transmission; Send and receive the packet of business along bearer path, and be transmitted to user terminal.
2, system according to claim 1 is characterized in that, described Media Resource Server comprises: interface unit, resource processing unit and media resource pond;
Described interface unit, realize interface with mobile soft switch, receive the resource request that described mobile soft switch sends, and according to the resource of this request to resource processing unit transmission requirement distribution or release, receive the result that resource information that is assigned with that described resource processing unit sends or resource discharge then, return replying of resource request to described mobile soft switch again; Receive and write down the nodal information in the bearer path that mobile soft switch sends;
Described resource processing unit, handle the distribution and the management of media resource in the Media Resource Server, the resource that the requirement that sends according to described interface unit distributes or discharges, from described media resource pond, select adequate resources or discharge the resource of appointment, and the result that the resource information that is assigned with or resource discharge is sent to described interface unit;
Described media resource pond provides media resource, and the packet that the bearer path along record is routed to itself carries out data processing, and sends to base station controller according to the resource of distributing.
H.248 or Session Initiation Protocol 3, system according to claim 2 is characterized in that, the communication protocol between described interface unit and the described mobile soft switch is:.
4, system according to claim 2 is characterized in that, described media resource pond comprises: encoding and decoding resource pool and playback number receiving resource pond;
Described encoding and decoding resource pool provides the encoding and decoding resource, and the packet that sends to itself for the base station controller of making a start provides encoding and decoding to handle;
Described playback number receiving resource pond, for business provides playback to collect the digits and the video conferencing resource, the data that send to itself for base station controller provide image processing, or form the IP bag of playback, and operation collects the digits.
5, system according to claim 4 is characterized in that, encoding and decoding resource pool and playback number receiving resource pond are closed and be located in the equipment, perhaps are arranged in the distinct device respectively.
6, the bearing method of mobile network internal under a kind of whole IP group network is characterized in that, further comprises Media Resource Server in IP kernel heart net, and this method comprises:
A, when bearer path is set up in mobile network inside, mobile soft switch is set up order according to the carrying that the base station controller that receives sends, be traffic assignments or deletion media resource from Media Resource Server, set up the bearer path that comprises or do not comprise Media Resource Server for business;
B, mobile soft switch send to the node that comprises in the bearer path with the information of node in the bearer path of setting up;
C, along bearer path transmission data, forward the data to again in the process of user terminal, if bearer path comprises Media Resource Server, then provide media resource for this business by Media Resource Server.
7, method according to claim 6 is characterized in that, step b further comprises: after the information of the node in receiving bearer path of the node in each bearer path, write down this bearer path.
8, method according to claim 7 is characterized in that, this bearer path of described record is: node is bound the nodal information that receives.
9, method according to claim 6 is characterized in that, described media resource comprises encoding and decoding resource, playback number receiving resource and video conferencing resource.
10, method according to claim 9 is characterized in that, the carrying that receives when mobile soft switch is set up order when showing that this business only need be distributed the playback resource, setting up bearer path for business and be described in the step a:
The media resource that mobile soft switch needs for this traffic assignments from Media Resource Server, foundation is by the bearer path of Media Resource Server to the base station controller of making a start, and the node that comprises in the described bearer path of step b is Media Resource Server and the base station controller of making a start.
11, method according to claim 10 is characterized in that, the Media Resource Server described in the step c for this business provides media resource is: Media Resource Server sends to the base station controller of making a start with the playback IP bag that himself forms.
12, method according to claim 9 is characterized in that, the carrying that receives when mobile soft switch is set up order when showing that this service needed is distributed encoding and decoding resource or video conferencing resource, setting up bearer path for business and be described in the step a:
The media resource that mobile soft switch needs for this traffic assignments from Media Resource Server, foundation is by the bearer path of the base station controller of the base station controller of making a start to Media Resource Server to receiving end, and the node that comprises in the described bearer path of step b is the base station controller of Media Resource Server and transmitting-receiving two-end.
13, method according to claim 12, it is characterized in that, Media Resource Server described in the step c for this business provides media resource is: during packet process Media Resource Server, Media Resource Server carries out encoding and decoding processing or image processing to packet.
According to claim 10 or 12 described methods, it is characterized in that 14, the described media resource that needs for traffic assignments is:
A10, mobile soft switch send resource allocation request according to the media resource of service needed to Media Resource Server;
A11, Media Resource Server allocation medium resource, and return resource allocation request to mobile soft switch and reply, if the resource allocation success is carried the resource information of being distributed during then this is replied,, carry the reason of failure during then this is replied if resource allocation is failed.
15, method according to claim 14 is characterized in that, described resource information is the IP address and the port numbers of media resource correspondence.
16, method according to claim 9 is characterized in that, the carrying that receives when mobile soft switch is set up order when showing this service needed deletion media resource, setting up bearer path for business and be described in the step a:
The resource of appointment is deleted in a1, mobile soft switch for this business from Media Resource Server;
A2, if the deletion resource after, the media resource that still has other in this business, then set up bearer path, and the node that comprises in the bearer path described in the step b is the base station controller of Media Resource Server and transmitting-receiving two-end by the base station controller of the base station controller of making a start to Media Resource Server to receiving end; If do not have other media resource in this business, then set up by the bearer path of the base station controller of making a start, and the node that comprises in the bearer path described in the step b be the base station controller of transmitting-receiving two-end to the base station controller of receiving end.
17, method according to claim 16 is characterized in that, the resource for this business deletion appointment described in the step a1 is:
A20, mobile soft switch send resource release request to Media Resource Server;
A21, Media Resource Server discharge resource, and return resource release request to mobile soft switch and reply after receiving the resource release request of mobile soft switch transmission, if resource discharges successfully, then this is replied and represents that resource discharges successfully, if the improper release of resource is carried cause value during then this is replied.
18, the Media Resource Server under a kind of whole IP group network is characterized in that, this Media Resource Server comprises interface unit, resource processing unit and media resource pond;
Described interface unit, realize interface with outside network device, receive the resource request that outside network device sends, and according to the resource of this request to described resource processing unit transmission requirement distribution, receive the result that resource information that is assigned with that described resource processing unit sends or resource discharge then, return replying of resource request to described outside network device again; When bearer path comprises Media Resource Server, receive the nodal information in the bearer path that mobile soft switch sends;
Described resource processing unit, handle the distribution and the management of media resource in the Media Resource Server, the resource that the requirement that sends according to described interface unit distributes, from described media resource pond, select adequate resources or discharge corresponding resource, and the result that the resource information that is assigned with or resource discharge is sent to described interface unit;
Described media resource pond provides media resource, and the packet that the bearer path along record is routed to itself carries out data processing according to the resource of distributing, and perhaps self forms the IP bag that playback collects the digits.
19, Media Resource Server according to claim 18 is characterized in that, described media resource pond comprises: encoding and decoding resource pool and playback number receiving resource pond;
Described encoding and decoding resource pool provides the encoding and decoding resource, and the packet that sends to itself for the base station controller of making a start provides needed encoding and decoding to handle;
Described playback number receiving resource pond, for business provides playback to collect the digits and the video conferencing resource, the data that send to itself for the base station controller of making a start provide video conferencing to handle, or form the IP bag that playback collects the digits.
20, Media Resource Server according to claim 19 is characterized in that, encoding and decoding resource pool and playback number receiving resource pond are closed and be located in the equipment, perhaps are arranged in the distinct device respectively.
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| CN102355638A (en) * | 2008-06-07 | 2012-02-15 | 华为技术有限公司 | Call processing method and device |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102355638A (en) * | 2008-06-07 | 2012-02-15 | 华为技术有限公司 | Call processing method and device |
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