CN1154307C - Method for implementing simplified control surface structure of 3G core web network equipment - Google Patents
Method for implementing simplified control surface structure of 3G core web network equipment Download PDFInfo
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- CN1154307C CN1154307C CNB011362979A CN01136297A CN1154307C CN 1154307 C CN1154307 C CN 1154307C CN B011362979 A CNB011362979 A CN B011362979A CN 01136297 A CN01136297 A CN 01136297A CN 1154307 C CN1154307 C CN 1154307C
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Abstract
The present invention discloses a method for implementing a control surface structure of a 3G core web network device. When a block threshold function entity SGSN is divided into an SGSN SERVER and a PS-MGW, standard Mp interfaces are used between the two devices. In the present invention, a Gb interface is connected between a base station system and the PS-MGW; the 2G-SGSN user interface function originally implemented on the SGSN SERVER is placed on the PS-MGW originally used for processing user data to be implemented, and control information related to the user surface function is transmitted by an original Mp interface or a private protocol; Gn interfaces and Gp interfaces originally transmitting both user surface data and control surface signaling between GPRS support nodes (GSN) formed in the SGSN SERVER and the same public land network (PLN) and GSNs in different PLMNs are respectively changed into Gn-c interfaces and Gp-c interfaces only transmitting control surface signaling, which is favorable for optimizing the transmission of user data, reducing the burden of the control surface of a network device and reducing the realization complexity of the device.
Description
Technical field
The present invention relates to the transmission technology of field of network interconnection technology digital information, comprise various packet data network, the network that for example GPRS (GPRS) network, universal mobile telecommunications system (UMTS) network and these networks and global system for mobile communications (GSM) network hybrid networking form.
Background technology
In order to satisfy growing demand to the data business, a GPRS (GPRS) network that on existing GSM network, superposeed again, the various mobile data applications of special disposal.Mainly comprise two functional entitys in the GPRS network: service GPRS support node (SGSN) and gateway GPRS support node (GGSN) couple together with the grouping backbone network between these two functional entitys.In order to make travelling carriage (MS) both can carry out voice service in the GSM network, also can carry out the Packet data service in the GPRS network, increased a new interface: Gb Interface, be used for connecting the base control (BSS) of SGSN and GSM network, be responsible for specially and transmit various control signalings, on these connect, transmit user data then to set up the connection of Packet data service.
Evolution along with mobile network's technology, the function of GSM network and GPRS network will merge gradually, form a unified network, be called 3G (Third Generation) Moblie (3G) network, this network both can processing circuit domain voice service, also can handle the data service of packet domain, the new business that can handle the various business that occurred in addition and also not occur.In 3G network, there are these two functional entitys of SGSN and GGSN equally, but the function of SGSN in 3G network and GGSN powerful than SGSN in the GPRS network and GGSN, especially SGSN has a great difference in realization.In order to be distinguished, before the title of SGSN functional entity, add a prefix, show its residing stage, convention is to claim that the SGSN in the GPRS network is 2G-SGSN, and the SGSN in the 3G network is 3G-SGSN or abbreviates SGSN as.GGSN is because can realize compatibility, so can not add differentiation, unification refers to GGSN.
Following network configuration is a kind of network configuration of layering, operation layer and key-course, bearing bed are separated, operation layer is only handled various applied business, key-course is according to the requirement of operation layer, the foundation of bearer path on the control bearing bed, adopt open interface between each layer, each other can independent evolution and can not influence other aspects.3GPP standard criterion according to 3G (Third Generation) Moblie, in line with the principle of controlling and carrying is separated, SGSN is separated realization, be about to packet field network functional entity SGSN and be separated into two parts: be responsible for the SGSN server (SGSN SERVER) of processing controls signaling and the packet domain media gateway (PS-MGW) of responsible processes user data, occur a new standard interface Mp between SGSN SERVER and the PS-MGW, H.248 this interface can use or GPRS tunnel control agreement (GTP-C) is descended the order of transmission control system and uploaded the signaling messages such as charge information that need.At after separating, two functional entitys can be distinguished evolution, can select flexibly when networking.Through this after separating, the 3G network structure has just possessed the layout of hierarchical network architecture basically.
Carry out in the separating process at SGSN, need divide, be divided into chain of command and user's face respectively according to the function of interface to each interface.These interfaces comprise: interface Gd, SGSN between interface Gs, SGSN between SGSN and mobile switching centre (MSC)/VLR Visitor Location Register (VLR) and Short Message Service-mobile switching centre's gateway (SMS-GMSC) or Short Message Service-internal work mobile switching centre (SMS-IWMSC) and interface Gr, the SGSN between the attaching position register (HLR) and interface Ge, SGSN between the SCP (SCP) and the interface Gf between the equipment identity register (EIR) etc., and the new interface that can occur will each other appear after the new functional entity from now on.
Separate SGSN according to the separation method in the existing standard, the existing network configuration that obtains is as shown in Figure 1 separated schematic diagram.This figure is not the total interface in the 3G network in this effect of only playing signal, has only shown several interfaces and functional entity related to the present invention.Solid line is represented on this interface and both can be transmitted user data among the figure, also can transmit the control signaling, and dotted line is represented can only transmit the control signaling message on this interface.Iu interface between radio network controller (RNC) and the SGSN, its user's face is exactly different agreements with the original use of chain of command, thereby separates easily.GPRS support node (GSN in the same Public Land Mobile Nerwork (PLMN), be SGSN and the general name of GGSN) between gn interface and the GPRS support node (GSN in the different PLMN, be the general name of SGSN and GGSN) between gp interface, what use on this Gn or the gp interface is GPRS Tunnel Protocol (GTP agreement), because itself is by two agreements---the GPRS tunnel User Agreement (GTP-U) of process user face and the GTP-C agreement of processing controls face are formed, thereby also are easy to separate realization.But when dividing Gb Interface, because its user's face and chain of command combination is very tight, packet will pass through L1bis layer, Network Service layer, BSSGP layer, logic chain key-course (LLC) successively and unpack, just can discern user face data and chain of command signaling to the LLC layer, as shown in Fig. 2, Fig. 3, Fig. 2 is the position of protocol stack in user's face of Gb Interface, and Fig. 3 is the position of protocol stack in chain of command of Gb Interface.Therefore want Gb is divided into chain of command and two aspects of user's face, arrive the LLC layer and just can carry out.
In order existing implementation procedure not to be produced big influence, present way is the functional entity 2G-SGSN that original GPRS network is responsible for handling Gb Interface all to be placed on the 3G-SGSN SERVER realize, form 2G-SGSN/SGSN SERVER, also comprise a complete 2G-SGSN among the SGSN SERVER after promptly this separates.Gb Interface becomes the interface between BSS and the 2G-SGSN/SGSNSERVER, had both transmitted the control signaling and also transmit user data on this interface.The processing of data process 2G-SGSN in 2G-SGSN/SGSN SERVER, just the same among processing procedure and the GPRS, be packaged into the GTP bag then and send to GGSN, wrap because of transmitting these GTP on this gn interface, thereby also will transmit control signaling and user data simultaneously from gn interface.By seeing among Fig. 1, the line of gn interface is a solid line.
If there is not the existence of Gb Interface, according to the result who separates, only need the processing controls signaling on the SGSN SERVER, use the GTP-C agreement, thereby the network equipment can obtain simplifying in realization, but because the realization of Gb Interface has been also placed in the 2G-SGSN/SGSN SERVER functional entity, make and have to the function of 2G-SGSN is all realized among the SGSN SERVER, there is not really to realize the separation on the complete meaning in fact, processing to Gb Interface makes the chain of command part after separating not obtain due simplification, run counter to the purpose of separating, offset and realized separating the benefit of bringing.
Summary of the invention
The object of the invention provides a kind of implementation method of 3G core web network equipment chain of command structure of simplification, by adopting a kind of method of new realization isolating construction, simplify the chain of command device structure, alleviate the burden of chain of command equipment SGSN SERRVER, reduce equipment cost.
The present invention is achieved through the following technical solutions:
A kind of implementation method of 3G core web network equipment chain of command structure of simplification, service GPRS support node (SGSN) functional entity in GPRS (GPRS) network is separated into SGSN server (2G-SGSN/SGSN SERVER) and packet domain media gateway (PS-MGW), adopt standard interface Mp to be connected between SGSN server and the packet domain media gateway (PS-MGW), it is characterized in that comprising following treatment step:
A. with the Gb Interface that originally is connected between base station system (BSS) and the SGSN server, change into and being connected between base station system (BSS) and the packet domain media gateway (PS-MGW);
B. the Gb Interface function that will originally realize on the SGSN server changes into by packet domain media gateway (PS-MGW) and handling;
C. allow be arranged between the GPRS support node (GSN) in SGSN server and the same public land net (PLMN), not only transmitted user face data originally but also transmit the gn interface of chain of command signaling, change the Gn-c interface into, this interface only transmits the chain of command signaling;
D. allow be arranged between the GSN in SGSN server and the different PLMN, not only transmitted user face data originally but also transmit the gp interface of chain of command signaling, change the Gp-c interface into, this interface only transmits the chain of command signaling.
The function that described packet domain media gateway (PS-MGW) is handled Gb Interface comprises the transmission of user face data and the transmission of chain of command signaling.
The chain of command signaling of described Gb Interface is to be sent to the SGSN server by described Mp by packet domain media gateway (PS-MGW).
The chain of command signaling of described Gb Interface is to utilize dedicated link to be sent to the SGSN server by packet domain media gateway (PS-MGW) by inner proprietary protocol.
Because the 2G-SGSN user plane functions that will pass by to realize on SGSN SERVER equipment is placed on the PS-MGW equipment and realizes, thus the structure of SGSN SERVER equipment simplified, optimized the transmission of user data, reduced the complexity that the network equipment is realized; And PS-MGW equipment itself is used for processes user data, increases after the user plane functions, can not exert an influence to this functional entity, thereby can obtain in the realization of the network equipment simplifying; Gb Interface is arranged between PS-MGW and the BSS, and the result according to separating only needs the processing controls signaling on the SGSN SERVER, uses the GTP-C agreement; The Gb Interface function is placed on PS-MGW and goes up realization, make the realization of chain of command functional entity SGSN SERVER of processing controls signaling become simple, need not realize and the relevant processing of Gb Interface user face, bring structural simplification, and then brought the reduction of equipment cost; Simplifying the complexity that does not increase the PS-MGW realization on the SGSN SERVER architecture basics, therefore the efficiency of transmission of Gb Interface user data reduces.
Description of drawings
Fig. 1 is existing 3G network isolating construction schematic diagram;
Fig. 2 is the position view of Gb Interface protocol stack in user's face;
Fig. 3 is the position view of Gb Interface protocol stack in chain of command;
Fig. 4 is improved 3G network isolating construction schematic diagram.
Embodiment
For making purpose of the present invention, technical scheme and advantage clearer, below with reference to the accompanying drawing embodiment that develops simultaneously, the present invention is described in more detail.
By the flow process of analyzing packet data business realizing and the function of Gb Interface, the major function that can find Gb Interface is carried out user data and is transmitted, the transmission of its control signaling only accounts for a very little part, shared ratio approximately is 16%, thereby is more suitable for Gb Interface is placed on user's face and realizes.
The main effect of PS-MGW functional entity is the control signaling that receives from SGSN SERVER, set up corresponding user's face tunnel according to the signaling content, the packet data package of receiving is carried out encapsulation/decapsulation, from the corresponding user's face of set up tunnel, send opposite end functional entity such as GGSN, RNC, BSS to, so its function is to carry out the transmission of user data.
Referring to Fig. 4, illustrate improved network detach structure among the figure.Between BSS (general name of BSC and BTS) and PS-MGW Gb Interface is set, because the function of Gb Interface all is placed on upward realization of PS-MGW, make complicated originally 2G-SGSN/SGSN SERVER only need finish various controlled function, need not to realize again GTP-U etc. and the irrelevant agreement of chain of command, so Gn-c interface between the GGSN of Home Network and the entity SGSNSERVER, Gp-c interface between the GGSN of outer net and the entity SGSN SERVER all only transmits the chain of command signaling, wherein, use Gn-c, Gp-c express and figure in other gn interfaces (between the GGSN of user's face PS-MGW and Home Network for gn interface), gp interface (between the GGSN of user's face PS-MGW and outer net is gp interface) different show especially that with the subscript that increases this interface only transmits the chain of command signaling.
Gb Interface is placed on PS-MGW and goes up after the realization, there is the chain of command of a spot of control signaling needs and SGSN server to carry out alternately, can handle flexibly according to actual conditions this part signaling, both can be encapsulated in H.248 and to have utilized Mp to transmit in agreement or the GTP-C agreement, and also can use inner proprietary protocol to transmit as the case may be.Such as when SGSN SERVER and PS-MGW are the product of same equipment vendor, when networking, these two equipment can be closed and establish, at this moment need not to realize standard interface between two equipment, only adopt special line just can realize the control of SGSN SERVER, thereby simplified a lot of processing PS-MGW with own inner proprietary protocol.In the reality multiple implementation method can be arranged, realize in order not limit it, regulation do not done in the realization of this part signaling at this, thus in Fig. 4 between SGSNSERVER and the PS-MGW except original Mp, also have a dotted line that does not have mark, expression is to the processing of this part control signaling.
Contrast Fig. 1 and Fig. 4, as seen, Gb Interface is placed on PS-MGW goes up realization, make complicated originally 2G-SGSN/SGSN SERVER only need finish various controlled function, need not to realize again GTP-U etc. and the irrelevant agreement of chain of command, not only alleviated the burden of chain of command equipment SGSN SERRVER, PS-MGW does not impact yet to user's face equipment, thereby is a kind of more rational implementation; Gb Interface is placed on the last realization of PS-MGW and can wear any complexity to the user simultaneously, for the processing of a small amount of control signaling, can realize with Mp, does not also increase complexity; SGSN SERVER in the 3G network need not to realize the protocol stack of Gb Interface.
Claims (4)
1. the implementation method of the 3G (Third Generation) Moblie core web network equipment chain of command structure of a simplification, the functional entity of service GPRS support node SGSN in the general packet radio service (GPRS) network is separated into SGSN server and packet domain media gateway, adopt standard interface Mp to be connected between SGSN server and the packet domain media gateway PS-MGW, it is characterized in that comprising following treatment step:
A. with the Gb Interface that originally is connected between base station system BSS and the SGSN server, change into and being connected between base station system BSS and the packet domain media gateway PS-MGW;
B. the Gb Interface function that will originally realize on the SGSN server changes into by packet domain media gateway PS-MGW and handling;
C. allow be arranged between the GPRS support node GSN in SGSN server and the same public land net PLMN, not only transmitted user face data originally but also transmit the gn interface of chain of command signaling, change the Gn-c interface into, this interface only transmits the chain of command signaling;
D. allow be arranged between the GSN in SGSN server and the different PLMN, not only transmitted user face data originally but also transmit the gp interface of chain of command signaling, change the Gp-c interface into, this interface only transmits the chain of command signaling.
2. the implementation method of the 3G (Third Generation) Moblie core web network equipment chain of command structure of a kind of simplification according to claim 1 is characterized in that: the function that described packet domain media gateway PS-MGW handles Gb Interface comprises the transmission of user face data and the transmission of chain of command signaling.
3, the implementation method of the 3G (Third Generation) Moblie core web network equipment chain of command structure of a kind of simplification according to claim 1 and 2, it is characterized in that: the chain of command signaling of described Gb Interface is to be sent to the SGSN server by described Mp by packet domain media gateway PS-MGW.
4, the implementation method of the 3G (Third Generation) Moblie core web network equipment chain of command structure of a kind of simplification according to claim 1 and 2 is characterized in that: the chain of command signaling of described Gb Interface is to utilize dedicated link to be sent to the SGSN server by packet domain media gateway PS-MGW by inner proprietary protocol.
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| CNB011362979A CN1154307C (en) | 2001-10-15 | 2001-10-15 | Method for implementing simplified control surface structure of 3G core web network equipment |
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| CNB011362979A CN1154307C (en) | 2001-10-15 | 2001-10-15 | Method for implementing simplified control surface structure of 3G core web network equipment |
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| CN1154307C true CN1154307C (en) | 2004-06-16 |
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Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN100367738C (en) * | 2003-08-14 | 2008-02-06 | 大连环宇移动科技有限公司 | Mobile exchange center for applying 3G mobile communication system |
| CN100388863C (en) * | 2004-11-17 | 2008-05-14 | 华为技术有限公司 | Service controlling method in virtual exchange system |
| CN100456879C (en) * | 2005-06-21 | 2009-01-28 | 华为技术有限公司 | Mobile communication network and its communication method |
| CN1964564B (en) * | 2005-10-10 | 2012-07-04 | 华为技术有限公司 | A distribution method for beared resource of user plane in wireless communication system and wireless communication system |
| CN1996913A (en) * | 2005-12-31 | 2007-07-11 | 华为技术有限公司 | A network interconnection system and method for separated control and load |
| CN100466860C (en) * | 2006-06-26 | 2009-03-04 | 华为技术有限公司 | A method for optimization of distribution user interface instance under the master-slave structure |
| CN101242353B (en) * | 2007-02-09 | 2010-08-25 | 华为技术有限公司 | Evolving communication system and its communication method |
| CN102056112B (en) * | 2009-11-05 | 2015-03-25 | 华为技术有限公司 | Method, equipment and system for transmitting data |
| CN102457698B (en) * | 2010-10-27 | 2014-05-07 | 深圳市誉融科技有限公司 | Video communication bridge-connection system and method |
| CN103906131A (en) * | 2012-12-25 | 2014-07-02 | 华为技术有限公司 | Data transmission system, device and method |
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