CN100407692C - System and method for realizing IP header compression - Google Patents
System and method for realizing IP header compression Download PDFInfo
- Publication number
- CN100407692C CN100407692C CN2004100584254A CN200410058425A CN100407692C CN 100407692 C CN100407692 C CN 100407692C CN 2004100584254 A CN2004100584254 A CN 2004100584254A CN 200410058425 A CN200410058425 A CN 200410058425A CN 100407692 C CN100407692 C CN 100407692C
- Authority
- CN
- China
- Prior art keywords
- pdsn
- router
- l2tp
- compression
- frame
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Abstract
The present invention discloses a system and a method for realizing IP header compression. The method comprises that a router which supports an L2TP tunnel protocol and an IP header compression protocol is arranged between a PDSN and a real-time service control center. The method also comprises the steps: a, after receiving an IP real-time service request transmitted by a managed MS, the PDSN establishes point-to-point PPP connection with the MS to complete LCP negotiation and certification; B, after the L2TP tunnel is established between the PDSN and the router, session is established between the PDSN and the router; C, the router and the MS complete the negotiation process of IP header compression via the PDSN; D, the PDSN converts a PPP frame with corresponding IP header compression received from the MS into an L2TP data frame which is sent to the router via the established tunnel, and the router converts the L2TP data frame into a corresponding signal which is sent to the service control center, or the L2TP data frame is converted into a corresponding medium flow needing to be sent to an IP loading net.
Description
Technical field
The present invention relates to the compress technique of Internet protocol on the mobile packet switching network (IP) head, particularly a kind of system and method for on mobile packet switching network, realizing the compression of IP head.
Background technology
Code division multiple access (CDMA) system is a kind of digital communication access mode that adopts advanced wireless frequency expansion technology.The topmost characteristics of cdma system are that its adopts spread spectrum communication and orthogonal coding technology, make a large number of users can share same frequency, advantage such as have that capacity is big, the availability of frequency spectrum is high, voice quality is good and the mobile phone transmitting power is little.
At present, several CDMA 1X systems have been set up in the worldwide, the core net of this system comprises circuit (CS) territory and grouping (PS) territory two parts: the CS territory mainly provides based on Circuit-switched speech business, the network element in CS territory mainly comprises CSC circuit switching center (MSC), attaching position register (HLR), business control nodes (SCP) and short message service center (SMS) etc.; The PS territory provides packet switched data service at a high speed, and the network element in PS territory mainly comprises packet control unit (PCF), Packet Switch Node (PDSN).
The typical networking structure figure of CDMA 1X system as shown in Figure 1.Wherein, when portable terminal will carry out packet switched data service, portable terminal such as mobile phone 100 or notebook computer 101 send the request packet switched data service by base station sub-system/packet control unit (BSS/PCF) 102 to PDSN103, PDSN103 utilizes 104 pairs of these portable terminals of certificate server (AAA) to carry out authentication, if authentication is passed through, then provide corresponding internet (Internet) 105 access services for this portable terminal according to this request, this portable terminal carries out packet switched data service; Otherwise authentication is not passed through, and finishes.
Along with the development of packet switching service, on the packet switching network of cdma system, provide IP-based real-time service to become current heat subject, as voice IP (VoIP).When will be when the cdma system packet switching network be realized the real-time service of IP, PDSN103 is routed to the IP bearer network according to the request message of the IP operation that portable terminal sends with portable terminal, by the real time business control center in the IP bearer network, carry out route as VoIP grouping control centre according to this request message and be transformed on the functional entity that corresponding IP operation is provided, provide corresponding IP operation by IP bearer network, PDSN103 and mobile terminal affiliated BSS/PCF102 to portable terminal by this functional entity.
The difficult point that realizes the IP real-time service on the cdma system packet switching network is that the propagation delay time of IP is very big, and the key technology that solves the big problem of IP propagation delay time is real-time protocol (rtp)/User Datagram Protoco (UDP) (UDP)/IP header field compress technique, but, PDSN in the present cdma system packet switching network is very limited to IP header field compression support, only support the compression of RFC1144IP head, for suggestion revision (RFC) 2507, it is the compression of UDP/TCP/IP head, RFC2508, be compression of RTP/UDP/TCP/IP head and RFC2509, i.e. agreements such as RTP/UDP/IP head compression Over PPP(Point-to-Point Protocol) are not all supported.In this case, can't make the propagation delay time of the IP real-time service that transmits by PDSN reach best, the user may be difficult to stand the big IP real-time service of time delay.
The big method of IP real-time service time delay that solves the PDSN transmission is all Packet Switch Node PDSN of upgrading in the packet switching network network-wide basis of cdma system, network-wide basis PDSN after the upgrading all supports RFC2507, be the compression of UDP/TCP/IP head, RFC2508, be compression of RTP/UDP/TCP/IP head and RFC2509, i.e. agreements such as RTP/UDP/IP head compression Over PPP.But, this upgrade method exists shortcoming: the equipment vendors that produce PDSN support inconsistent to each IP compression protocol, the exploitation of compression function has certain construction cycle, so all PDSN that can not upgrade in network-wide basis fast make PDSN that IP required compression function is provided; The whole network upgrading PDSN can significantly increase networking and operation cost.
Summary of the invention
In view of this, main purpose of the present invention is to provide on the one hand a kind of system of the IP of realization head compression, and this system implements the IP head compression technology under the situation that does not need existing P DSN upgrading and change, and reduces networking and cuts operating costs;
The present invention provides a kind of method of the IP of realization head compression on the other hand, this method realizes based on the system that realizes the compression of IP head, can reduce the time delay time, thereby make the user can receive short IP real-time service of time delay time by the IP real-time service of PDSN transmission.
According to above-mentioned purpose, technical scheme of the present invention is achieved in that
A kind of system that realizes the compression of IP head, this system comprises code division multiple access system packet switching network, Internet protocol (IP) bearer network and real time business control center, mobile terminal MS carries out information interaction by the base station sub-system in the code division multiple access system packet switching network/packet control unit BSS/PCF and Packet Switch Node PDSN, it is characterized in that, between PDSN and real time business control center, increase a router, this router is arranged in the IP bearer network, and being used for provides the IP real-time service with the compression of IP head by PDSN for MS.
Described router is supported 2 layers of L2TP Tunnel agreement and IP compression protocol.
A described IP compression protocol is suggestion revision RFC2507 or RFC2508 or RFC2509 or RFC3095.
A described router is connected with a plurality of PDSN in the code division multiple access system packet switching network, sets up into VPN with the MS of professional control centre and a plurality of PDSN administration.
Described professional control centre is provided by content supplier or service provider.
Described router also is used for unifying dynamic assignment IP address to all MS of VPN.
A kind of method that realizes the compression of IP head is provided with a router of supporting L2TP Tunnel agreement and IP compression protocol between PDSN and real time business control center, this method comprises:
A, PDSN receive after the IP real-time service request that sends of the MS that administers, carry out carrying out point-to-point PPP establishment of connection with MS, finish that LCP LCP consults and authentication;
Behind the L2TP Tunnel between B, PDSN foundation and the router, the session between foundation and the router;
C, router are finished the negotiations process of IP head compression by PDSN and MS;
D, PDSN will be converted to the L2TP Frame from the PPP frame with corresponding IP head compression that MS receives, send to router by the tunnel of setting up, router is converted to corresponding signaling with this L2TP Frame and sends to professional control centre, perhaps this L2TP Frame is converted to corresponding Media Stream and sends to the IP bearer network.
A described IP compression protocol is RFC2507 or RFC2508 or RFC2509 or RFC3095.
All PDSN carry out interacting message in a described router and the code division multiple access system packet switching network.
This method further comprises:
E, router will be converted to the L2TP Frame from the signaling flow that professional control centre receives and send to PDSN by the tunnel of setting up; Perhaps the media stream transition that will receive from the IP bearer network is that the L2TP Frame sends to PDSN by the tunnel of setting up;
F, PDSN are converted to the PPP frame with corresponding IP head compression with the L2TP Frame that receives and send to MS.
The described negotiations process of step C is: consult compression parameters needed and data, and distribute dynamic IP address for MS.
From such scheme as can be seen, method provided by the invention has increased a Router who supports L2TP Tunnel agreement and IP compression protocol between PDSN and real time business control center, this Router can connect by setting up PPP between PDSN and the MS, thereby transmits the real-time service of IP to MS.Because PDSN just plays the real-time service of forwarding IP or the function of signaling flow in system provided by the invention, its needs are for setting up L2TP Tunnel and session between MS and the Router, and finish the UDP/IP header field compress technique of IP real-time service by Router, so system provided by the invention does not need to implement the IP head compression technology under the situation of existing P DSN upgrading and change.Because the present invention has just increased a Router between PDSN and real time business control center, and this Router can be connected with all PDSN in the cdma system packet data network, so and in the change cdma system packet data network each PDSN contrast is set, reduce networking and cut operating costs.Because system provided by the invention supports UDP/IP header field compress technique, so the method based on system of the present invention provided by the invention can reduce the time delay time by the IP real-time service of PDSN transmission, thereby make the user can receive short IP real-time service of time delay time.
Description of drawings
Fig. 1 is the typical networking structure figure of CDMA 1X system.
Fig. 2 is group-network construction figure of the present invention.
Fig. 3 uses the protocol stack model figure of L2TP Tunnel agreement in MS, PDSN103 and Router202 for the present invention.
Fig. 4 is the process flow diagram of the invention process IP real-time service.
Embodiment
In order to make the purpose, technical solutions and advantages of the present invention clearer, by the following examples and with reference to accompanying drawing, the present invention is further elaborated.
Group-network construction figure of the present invention as shown in Figure 2, increased a router (Router) 202 of supporting 2 layer tunnel protocols (L2TP) tunnel protocol and IP compression protocol between PDSN103 in prior art cdma system packet switching network and the real time business control center 201, Router202 is arranged in the IP bearer network, finishes the transmission of IP real-time service.This Router202 is connected with all PDSN103 in the cdma system packet switching network, and promptly a cdma system packet switching network only need provide a Router202.
In Fig. 2, the BSS among the BSS/PCF102 comprises base station (BTS) and base station controller (BSC), and BTS finishes the wireless signal transmission-receiving function to portable terminal (MS), realizes the communication between cdma network and the MS; BSC finishes control and the management of BSS, calls out establishment of connection and dismounting, mobile management and soft/direct-cut operation etc. that is:;
PCF among the BSS/PCF finishes R-P establishment of connection, maintenance and management;
PDSN103, the equipment in the cdma system packet switching network is supported the L2TP Tunnel agreement;
AAA104, be used for to MS authorize, authentication and charging;
Router202 supports a L2TP Tunnel agreement and a various IP compression protocol, can unify dynamic assignment IP address for the MS that uses the IP real-time service.
Various places PDSN in the cdma network shown in Figure 2 and Router constitute a distribution wide area connecting system.Set up into a VPN that characteristic service is provided with professional control centre.Professional control centre can be provided by the 3rd side, as: content supplier or service provider.
Dynamic assignment is unified by Router in the IP address of all MS in the VPN that the present invention is set up, and the allocation strategy of the IP address of MS can be selected flexibly according to the needs of characteristic service, thereby provides guarantee for carrying out of business.
The main effect of L2TP Tunnel agreement is PPP(Point-to-Point Protocol) to be inserted expand to far-end by local terminal, promptly there is PDSN103 to expand to Router202, providing economic teleaction service to provide (ISP) to insert and the enterprise network access to MS, is very important agreement in the IP virtual private network (VPN).
The present invention adopts the L2TP Tunnel agreement that MS is connected the Router202 that is expanded to the support L2TP Tunnel agreement of far-end by local PDSN103 with PPP between the PDSN103.PDSN103 is as the access tandem point (LAC of L2TP Tunnel agreement, L2TP Access Concentrator), and Router202 is as the webserver (LNS of L2TP, L2TP Network Server), operation L2TP Tunnel agreement is moved ppp protocol between MS and Router202 between PDSN103 and Router202.
Fig. 3 uses the protocol stack model figure of L2TP Tunnel agreement in MS, PDSN103 and Router202 for the present invention, as shown in the figure: between MS and Router202, adopt PPP to communicate, can connect by PPP between MS and the Router202 and implement a various required IP compression protocol, for example: agreements such as RFC2507/RFC2508/RFC2509/RFC3095.PDSN103 only needs to support that in order can transparent transmission PPP to connect a L2TP Tunnel agreement gets final product, and existing PDSN at the cdma system group data service network just supports the L2TP Tunnel agreement, thereby does not need existing P DSN103 is upgraded and changes.
Below be example with the VoIP business, the process of implementing the IP real-time service once in system provided by the invention is described.
Fig. 4 is the process flow diagram of the invention process IP real-time service, and it still is common dialing access service that the IP bearer network can be discerned characteristic service according to the user name that MS dials up on the telephone.Suppose the user VoIP.shenzhen by name of MS, connect when setting up request that initiate L2TP Tunnel and set up process, and carry out IP head compression (IPCP) negotiations process, its concrete steps are when local PDSN103 receives PPP that user VoIP.shenzhen by name sends:
Step 400, MS send the VoIP voice service request to local PDSN103, promptly start PPP establishment of connection process between MS and local PDSN103, finish LCP (LCP) negotiations process and authentication;
Step 401, local PDSN103 recognize the user VoIP.shenzhen by name of this MS, the L2TP Tunnel that is initiated to Router202 connects the process of setting up, be local PDSN103 as LAC and Router202 as authenticating between the LNS, for L2TP Tunnel distributes Tunnel Identifier (ID), determine the bearer types and the frame encapsulation format of L2TP Tunnel, and the receive window size;
After step 402, local PDSN103 have set up L2TP Tunnel, start session and set up process, finish that session id distributes, the bearer types of data channel and frame encapsulated type etc.;
Step 403, after local PDSN103 sets up session, Router202 can initiate IPCP to MS by PDSN103, consult IPCP compression parameters needed and data, be MS distributing IP address, the allocation strategy of IP address can be selected flexibly according to the service needed of carrying out;
Step 404, Router202 set up with MS between PPP be connected, and adopt needed IP head compression technology according to the ipcp negotiation result;
PDSN103 will receive the PPP frame from MS, and it is packaged into the L2TP Frame, send to Router202 through L2TP Tunnel;
When step 405, Router202 receive this L2TP Frame, with content in the L2TP Frame is that the corresponding signaling flow of being converted to of signaling flow sends to professional control centre, determining to provide this request to require the functional entity of VoIP speech business by professional control centre, is that the corresponding Media Stream of being converted to of Media Stream sends to determined functional entity by IP bearer network and professional control centre with content in the L2TP Frame.
Same, Router202 will also can be converted to the L2TP Frame by the Media Stream that IP bearer network and professional control centre receive from the functional entity of determining, send to local PDSN103, local PDSN103 is converted to the PPP frame with this L2TP Frame, sends to MS and receives; Perhaps the signaling flow received from professional control centre of Router202 is converted to the L2TP Frame, sends to local PDSN103, and local PDSN103 is converted to the PPP frame with this L2TP Frame, sends to MS and receives.
Adopt system and method provided by the invention, under the situation that cdma system packet switching service network network does not support the IP head to compress, increased Router202, thereby realized required IP head compression technology.
The above only is preferred embodiment of the present invention, not in order to restriction the present invention, all any modifications of being made within the spirit and principles in the present invention, is equal to and replaces and improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. system that realizes IP head compression, this system comprises the code division multiple access system packet switching network, Internet protocol (IP) bearer network and real time business control center, mobile terminal MS carries out information interaction by the base station sub-system in the code division multiple access system packet switching network/packet control unit BSS/PCF and Packet Switch Node PDSN, it is characterized in that, between PDSN and real time business control center, increase a router of supporting 2 layers of L2TP Tunnel agreement and IP compression protocol, this router is arranged in the IP bearer network, adopt L2TP Tunnel to be connected, be used for providing IP real-time service for MS with the compression of IP head by PDSN with described PDSN.
2. the system as claimed in claim 1 is characterized in that, a described IP compression protocol is suggestion revision RFC2507 or RFC2508 or RFC2509 or RFC3095.
3. the system as claimed in claim 1 is characterized in that, a described router is connected with a plurality of PDSN in the code division multiple access system packet switching network, sets up into VPN with the MS of professional control centre and a plurality of PDSN administration.
4. as claim 1 or 3 described systems, described professional control centre is provided by content supplier or service provider.
5. system as claimed in claim 4, described router also is used for unifying dynamic assignment IP address to all MS of VPN.
6. the method based on the realization IP head compression of the described system of claim 1 is characterized in that, a router of supporting L2TP Tunnel agreement and IP compression protocol is set between PDSN and real time business control center, and this method comprises:
A, PDSN receive after the IP real-time service request that sends of the MS that administers, carry out carrying out point-to-point PPP establishment of connection with MS, finish that LCP LCP consults and authentication;
Behind the L2TP Tunnel between B, PDSN foundation and the router, the session between foundation and the router;
C, router are finished the negotiations process of IP head compression by PDSN and MS;
D, PDSN will be converted to the L2TP Frame from the PPP frame with corresponding IP head compression that MS receives, send to router by the tunnel of setting up, router is converted to corresponding signaling with this L2TP Frame and sends to professional control centre, perhaps this L2TP Frame is converted to corresponding Media Stream and sends to the IP bearer network.
7. method as claimed in claim 6 is characterized in that, a described IP compression protocol is RFC2507 or RFC2508 or RFC2509 or RFC3095.
8. method as claimed in claim 6 is characterized in that, all PDSN carry out interacting message in a described router and the code division multiple access system packet switching network.
9. method as claimed in claim 6 is characterized in that, this method further comprises:
E, router will be converted to the L2TP Frame from the signaling flow that professional control centre receives and send to PDSN by the tunnel of setting up; Perhaps the media stream transition that will receive from the IP bearer network is that the L2TP Frame sends to PDSN by the tunnel of setting up;
F, PDSN are converted to the PPP frame with corresponding IP head compression with the L2TP Frame that receives and send to MS.
10. method as claimed in claim 6 is characterized in that, the described negotiations process of step C is: consult compression parameters needed and data, and distribute dynamic IP address for MS.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2004100584254A CN100407692C (en) | 2004-08-11 | 2004-08-11 | System and method for realizing IP header compression |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2004100584254A CN100407692C (en) | 2004-08-11 | 2004-08-11 | System and method for realizing IP header compression |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2007101530679A Division CN101217692A (en) | 2004-08-11 | 2004-08-11 | A system and method for realizing IP header compression |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1735070A CN1735070A (en) | 2006-02-15 |
| CN100407692C true CN100407692C (en) | 2008-07-30 |
Family
ID=36077271
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2004100584254A Expired - Fee Related CN100407692C (en) | 2004-08-11 | 2004-08-11 | System and method for realizing IP header compression |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100407692C (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100433724C (en) * | 2006-03-15 | 2008-11-12 | 华为技术有限公司 | Method and equipment of ageing treatment for header compressed list items of context in Internet protocol |
| CN102282808B (en) * | 2009-04-30 | 2013-11-06 | 华为技术有限公司 | Method for transmitting data, related device and communication system thereof |
| CN101883441B (en) * | 2009-10-16 | 2013-03-13 | 华为终端有限公司 | Real-time online method and device based on PPP (Point-to-Point Protocol) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030145064A1 (en) * | 2002-01-28 | 2003-07-31 | Hsu Raymond T. | Method and apparatus for negotiation of transmission parameters for broadcast/multicast services |
| WO2003063417A2 (en) * | 2002-01-16 | 2003-07-31 | Qualcomm Incorporated | Method and apparatus for flow treatment and mapping on multicast/broadcast services |
| US6608841B1 (en) * | 1999-12-30 | 2003-08-19 | Nokia Networks Oy | System and method for achieving robust IP/UDP/RTP header compression in the presence of unreliable networks |
| CN1454425A (en) * | 2000-07-27 | 2003-11-05 | 艾利森电话股份有限公司 | A method for header compression context control during handover in mobile data communication network |
-
2004
- 2004-08-11 CN CN2004100584254A patent/CN100407692C/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6608841B1 (en) * | 1999-12-30 | 2003-08-19 | Nokia Networks Oy | System and method for achieving robust IP/UDP/RTP header compression in the presence of unreliable networks |
| CN1454425A (en) * | 2000-07-27 | 2003-11-05 | 艾利森电话股份有限公司 | A method for header compression context control during handover in mobile data communication network |
| WO2003063417A2 (en) * | 2002-01-16 | 2003-07-31 | Qualcomm Incorporated | Method and apparatus for flow treatment and mapping on multicast/broadcast services |
| US20030145064A1 (en) * | 2002-01-28 | 2003-07-31 | Hsu Raymond T. | Method and apparatus for negotiation of transmission parameters for broadcast/multicast services |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1735070A (en) | 2006-02-15 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP1360855B1 (en) | Access system for a cellular network | |
| CN103313232B (en) | Communication means, communication equipment and user equipment | |
| JPH11331276A (en) | Registration method for network | |
| JPH11275155A (en) | Message in network and communications system | |
| JPH11275156A (en) | Communication using pier-to-pier protocol server | |
| JP2000022758A (en) | Interworking function selection system in network | |
| JP2010213357A (en) | Method of interfacing two wireless networks | |
| JPH11289353A (en) | Accounting system for network | |
| JPH11284666A (en) | Mobile management system | |
| RU2007107353A (en) | METHOD AND DEVICE FOR PROVIDING CORRELATION MEANS IN HYBRID TELECOMMUNICATION NETWORKS | |
| JPH11275154A (en) | Message distribution sequence | |
| US7068644B1 (en) | Wireless access gateway to packet switched network | |
| CN103781073B (en) | The cut-in method and system of mobile subscriber's fixed network | |
| CN114615154A (en) | Method and device for managing service quality and communication system | |
| EP1777902B1 (en) | GPRS System and In-Zone Node Apparatus and Bearer Setting Method Used Therefor | |
| CN100461874C (en) | Architecture for implementation of radio access bearer manager and packet data convergence protocol process | |
| CN113329454B (en) | Method, network element, system and equipment for releasing route | |
| WO2010063236A1 (en) | Communication network, communication apparatus and communication method | |
| CN1163032C (en) | Method and apparatus for channel optimization during point-to-point protocel (PPP) session requests | |
| CN101346905A (en) | Radio access station apparatus and method of controlling call in portable internet system | |
| Lin et al. | General Packet Radio Service (GPRS): architecture, interfaces, and deployment | |
| CN1192565C (en) | Internet access method based on radio block network gateway | |
| CN100407692C (en) | System and method for realizing IP header compression | |
| CN100525526C (en) | Overlay micro cell structure for universal mobile phone system network | |
| CN101184338A (en) | User access method and gateway equipment in WIMAX system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080730 Termination date: 20100811 |