NO324782B1 - Method for improving the transmission of a connection from one SGSN to another SGSN - Google Patents
Method for improving the transmission of a connection from one SGSN to another SGSN Download PDFInfo
- Publication number
- NO324782B1 NO324782B1 NO19976150A NO976150A NO324782B1 NO 324782 B1 NO324782 B1 NO 324782B1 NO 19976150 A NO19976150 A NO 19976150A NO 976150 A NO976150 A NO 976150A NO 324782 B1 NO324782 B1 NO 324782B1
- Authority
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- Norway
- Prior art keywords
- sgsn
- connection
- stated
- new
- anchor
- Prior art date
Links
- 238000000034 method Methods 0.000 title claims description 34
- 230000005540 biological transmission Effects 0.000 title claims description 6
- 238000012546 transfer Methods 0.000 claims description 11
- 230000011664 signaling Effects 0.000 claims description 7
- 230000000694 effects Effects 0.000 claims description 2
- 238000012986 modification Methods 0.000 claims description 2
- 230000004048 modification Effects 0.000 claims description 2
- 239000000243 solution Substances 0.000 description 4
- 238000013461 design Methods 0.000 description 3
- 230000005641 tunneling Effects 0.000 description 2
- 210000000988 bone and bone Anatomy 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012224 working solution Substances 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/12—Reselecting a serving backbone network switching or routing node
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Mobile Radio Communication Systems (AREA)
- Data Exchanges In Wide-Area Networks (AREA)
- Emergency Protection Circuit Devices (AREA)
Description
FREMGANGSMÅTE FOR FORBEDRET OVERFØRING AV EN FORBINDELSE METHOD FOR IMPROVED TRANSMISSION OF A COMMUNICATION
FRA EN SGSN TIL EN ANNEN SGSN FROM ONE SGSN TO ANOTHER SGSN
O ppfinnelsens område The field of the invention
Foreliggende oppfinnelse vedrører en fremgangsmåte for forbedret overføring av en forbindelse fra en SGSN til en annen, det vil si når en MS (Mobilstasjon) beveger seg fra et SGSN tjenesteområdet til et annet. The present invention relates to a method for improved transfer of a connection from one SGSN to another, that is when an MS (Mobile Station) moves from one SGSN's service area to another.
Oppfinnelsens bakgrunn The background of the invention
Nærmere bestemt vedrører foreliggende oppfinnelse GPRS tjeneste på GSM. More specifically, the present invention relates to GPRS service on GSM.
Når en mobilstasjon (MS) i aktiv GPRS modus, det vil si den sender informasjon, beveger seg fra et SGSN tjenesteområde til et annet, bør ikke pakkeoverføringen og mulige lag 3 prosedyrer bli avbrutt. When a mobile station (MS) in active GPRS mode, i.e. it is sending information, moves from one SGSN service area to another, the packet transfer and possible layer 3 procedures should not be interrupted.
På grunn av de komplekse tilstands maskiner for lag 3 prosedyrer, vil endring av SGSN direkte medføre sending av meget store mengder kontrolldata fra én SGSN til en annen. Et annet problem er pågående transaksjoner med andre nettverksnoder som også må omdirigeres til den nye Due to the complex state machines for layer 3 procedures, changing the SGSN will directly involve sending very large amounts of control data from one SGSN to another. Another problem is ongoing transactions with other network nodes that must also be redirected to the new one
SGSN. SGSN.
Teknikkens stand State of the art
GSM taletjeneste bruker et anker konsept for å løse problemet. Dette betyr at i nettverks noden (MSC/VLR) blir en forbindelse primært etablert og holdes gjennom hele samtalen. Denne noden kalles anker "MSC/VLR". Hvis abonnenten beveger inn i en annen MSC/VLR\<1>s dekningsområde, vil den nye MSC/VLR bare opptre som en transittnode. Denne node kalles tjenende "MSC/VLR" mens forbindelseskon- trollen fremdeles befinner seg i anker MSC/VLR gjennom hele samtalen. GSM voice service uses an anchor concept to solve the problem. This means that in the network node (MSC/VLR) a connection is primarily established and maintained throughout the call. This node is called anchor "MSC/VLR". If the subscriber moves into another MSC/VLR\<1>'s coverage area, the new MSC/VLR will only act as a transit node. This node is called serving "MSC/VLR" while the connection control is still in anchor MSC/VLR throughout the call.
Problemer vedrørende kjent teknikk Problems concerning known technology
GPRS har ingen fungerende løsning på dette problemet en-da. På grunn av de lange forbindelsestider for GPRS (ti-mer) sammenlignet med en kretssvitsjet forbindelse (mi-nutter) , kan en lignende løsning for GPRS resultere i et stort antall ankertjenende bein. GPRS has no working solution to this problem yet. Due to the long connection times for GPRS (hours) compared to a circuit-switched connection (minutes), a similar solution for GPRS can result in a large number of anchor serving legs.
Hensikter med oppfinnelsen Purposes of the invention
En hensikt med foreliggende oppfinnelse er å tilveiebringe en fremgangsmåte for forbedret overføring av en forbindelse fra én SGSN til en annen, hvorved pakkeoverfø-ring og mulige lag 3 prosedyrer ikke avbrytes. One purpose of the present invention is to provide a method for improved transfer of a connection from one SGSN to another, whereby packet transfer and possible layer 3 procedures are not interrupted.
En annen hensikt med foreliggende oppfinnelse er å tilveiebringe en slik fremgangsmåte hvor lag 3 prosedyrene ikke må utformes for å understøtte inter SGSN rutings oppdatering. Another purpose of the present invention is to provide such a method where the layer 3 procedures do not have to be designed to support inter SGSN routing update.
Enda en hensikt med foreliggende oppfinnelse er å tilveiebringe en fremgangsmåte hvor risikoen for å miste nyttelast pakker er minimalisert. Another purpose of the present invention is to provide a method where the risk of losing payload packages is minimized.
En annen hensikt med foreliggende oppfinnelse er å tilveiebringe en fremgangsmåte hvorved tunneleringen av nyttelast pakker én SGSN til en annen ikke er påkrevet, og derved forenkles den nødvendige utformingen derfor. Another purpose of the present invention is to provide a method whereby the tunneling of payload packets from one SGSN to another is not required, and thereby the necessary design is therefore simplified.
Enda en annen hensikt med foreliggende oppfinnelse er å tilveiebringe en fremgangsmåte som optimaliserer bruken av nettet uten å addere kompleksitet til SGSN. Yet another purpose of the present invention is to provide a method that optimizes the use of the network without adding complexity to the SGSN.
En annen hensikt med foreliggende oppfinnelse er å tilveiebringe en fremgangsmåte hvor tjenestedegradering ved overføring av en forbindelse fra én SGSN til en annen mi-nimaliseres som den oppleves fra MS essens synspunkt. Another purpose of the present invention is to provide a method where service degradation during the transfer of a connection from one SGSN to another is minimized as it is experienced from the point of view of the MS essence.
Kort beskrivelse av oppfinnelsen Brief description of the invention
I en fremgangsmåte som angitt i innledningen, oppnås hen-siktene ovenfor av de trekk som angis i de medfølgende patentkrav. In a method as stated in the introduction, the above purposes are achieved by the features stated in the accompanying patent claims.
Med andre ord, foreslår foreliggende fremgangsmåte at ved inter SGSN rutings oppdatering, for den gamle SGSN rollen som et temporært anker mens den nye SGSN temporært arbeider som en tjenende SGSN. Dette bein beholdes så lenge In other words, the present method proposes that upon inter SGSN routing update, the old SGSN plays the role of a temporary anchor while the new SGSN temporarily works as a serving SGSN. This bone is kept for so long
prosedyren for forbindelseskontroll prosesseres inkludert overføring av datapakker. Når all aktivitet har opphørt for forbindelsen, det vil si ingen dataoverføring, ingen lag 3 prosedyrer og ingen pågående transaksjoner mot andre nettverksnoder, flyttes forbindelses kontrollen fra anker til tjenende SGSN. the connection control procedure is processed including the transmission of data packets. When all activity has ceased for the connection, i.e. no data transfer, no layer 3 procedures and no ongoing transactions with other network nodes, connection control is transferred from the anchor to the serving SGSN.
Beinet mellom anker og tjenende SGSN er et Gb grensesnitt med mindre modifikasjoner. Noe kontrollsignalering kreves for å håndtere radioresursene. The leg between anchor and serving SGSN is a Gb interface with minor modifications. Some control signaling is required to manage the radio resources.
Videre fordeler og trekk ved foreliggende fremgangsmåte vil fremgå fra den følgende beskrivelse tatt i sammenheng med de vedføyde tegninger, så vel som fra de inkluderte patentkrav. Further advantages and features of the present method will be apparent from the following description taken in conjunction with the attached drawings, as well as from the included patent claims.
Kort beskrivelse av te<g>nin<g>ene Brief description of the te<g>nin<g>s
Figur 1 og figur 2 er planer over signalerings sekvenser, som illustrerer prinsippet hvordan inter SGSN rutings oppdatering utføres i 2 trinn. Figure 1 and Figure 2 are plans of signaling sequences, which illustrate the principle of how the inter SGSN routing update is carried out in 2 steps.
Beskrivelse av utferelsesformer Description of embodiments
Som forklart i innledningen, vedrører foreliggende oppfinnelse en fremgangsmåte for å overføre en forbindelse fra én SGSN til en annen uten å avbryte pakketransmisjon og kontrollsignalering. Fremgangsmåten tillater nette og lage et temporært bein mellom den gamle og den nye SGSN. Det temporære bein virker inntil tilstanden av forbindelsen i anker SGSN kan sikkert overføres til den nye SGSN mens pakkeoverføring samtidig omdirigeres til å gå direkte fra/til SGSN til/fra den nye SGSN. As explained in the introduction, the present invention relates to a method for transferring a connection from one SGSN to another without interrupting packet transmission and control signalling. The procedure allows meshing and creating a temporary leg between the old and the new SGSN. The temporary leg operates until the state of the connection in the anchor SGSN can be safely transferred to the new SGSN while simultaneously redirecting packet transmission to go directly from/to the SGSN to/from the new SGSN.
Med henvisning til figur 1 og figur 2 er det illustrert ved hjelp av en signalerings frekvens hvordan prinsippene for inter SGSN rutings oppdatering utføres i 2 trinn. With reference to figure 1 and figure 2, it is illustrated by means of a signaling frequency how the principles for inter SGSN routing update are carried out in 2 steps.
Denne konstruksjon har fordelen av ikke å påvirke pågående lag 3 prosedyrer og nyttelast overføringer. I virke-ligheten må ikke lag 3 prosedyrer utformes for å under-støtte inter SGSN rutings oppdatering siden den temporære Gb kanal ikke er synlig for lag 3. Dagens løsning i GPRS krever at alle lag 3 prosedyrer må utformes for ta hånd om en inter SGSN rutings oppdatering. This design has the advantage of not affecting ongoing layer 3 procedures and payload transfers. In reality, layer 3 procedures must not be designed to support inter SGSN routing updates since the temporary Gb channel is not visible to layer 3. Today's solution in GPRS requires that all layer 3 procedures must be designed to take care of an inter SGSN routing update.
Siden kontekst overføringen fra temporært til anker til ny SGSN skjer når forbindelsen har gått over i en hvile tilstand, er risikoen for å miste nyttelast pakker minimalisert. Og siden det ikke er noen pågående trafikk, kreves det ikke tunnelering av nyttelast pakker fra temporært anker til SGSN, og derved forenkles utformingen. Since the context transfer from temporary to anchor to new SGSN occurs when the connection has transitioned into a rest state, the risk of losing payload packets is minimized. And since there is no ongoing traffic, no tunneling of payload packets from the temporary anchor to the SGSN is required, thereby simplifying the design.
Prinsippet med temporært anker forenkler også signalering mellom SGSN og eksterne noder. Siden løsningen tillater forbindelsen å avslutte pågående transaksjoner før konteksten flyttes til ny SGSN, kan tjenester slik som debitering fullføres mot debiteringsutgang (gateway) på normal måte før konteksten flyttes til den nye SGSN og debitering tas opp igjen. The principle of temporary anchor also simplifies signaling between the SGSN and external nodes. Since the solution allows the connection to terminate ongoing transactions before the context is moved to the new SGSN, services such as debiting can be completed against the debiting gateway in the normal way before the context is moved to the new SGSN and debiting is resumed.
Fordeler ved oppfinnelsen Advantages of the invention
Løsningen optimaliserer nettets utnyttelse uten å addere kompleksitet til SGSN. Abonnenten vil ikke oppleve noe tap av tjeneste, det vil si ingen re-transmisjon "peer to peer" og ingen avbrutte lag 3 prosedyrer. The solution optimizes the network's utilization without adding complexity to the SGSN. The subscriber will experience no loss of service, i.e. no re-transmission "peer to peer" and no interrupted layer 3 procedures.
Liste over forkortelser List of abbreviations
GPRS - General Packet Radio Service GPRS - General Packet Radio Service
SGSN - Serving GPRS support node SGSN - Serving GPRS support node
GGSN - Gateway GPRS support node GGSN - Gateway GPRS support node
MSC/VTLR - Mobile Switching Centre/Visitor Location Re-gister MSC/VTLR - Mobile Switching Centre/Visitor Location Register
Claims (7)
Priority Applications (6)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NO19976150A NO324782B1 (en) | 1997-12-30 | 1997-12-30 | Method for improving the transmission of a connection from one SGSN to another SGSN |
| TW087120823A TW437242B (en) | 1997-12-30 | 1998-12-15 | Method for improving the handing over a connection from one SGSN to another SGSN |
| PCT/SE1998/002396 WO1999034635A2 (en) | 1997-12-30 | 1998-12-18 | Method for improving the handing over a connection from one sgsn to another sgsn |
| AU21936/99A AU2193699A (en) | 1997-12-30 | 1998-12-18 | Method for improving the handing over a connection from one sgsn to another sgsn |
| KR1020007007302A KR100540353B1 (en) | 1997-12-30 | 1998-12-18 | Method for improving the handing over a connection from one sgsn to another sgsn |
| US09/730,877 US6940834B2 (en) | 1997-12-30 | 2000-12-05 | Method for improving the handing over a connection from one SGSN to another SGSN |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NO19976150A NO324782B1 (en) | 1997-12-30 | 1997-12-30 | Method for improving the transmission of a connection from one SGSN to another SGSN |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| NO976150D0 NO976150D0 (en) | 1997-12-30 |
| NO976150L NO976150L (en) | 1999-07-01 |
| NO324782B1 true NO324782B1 (en) | 2007-12-10 |
Family
ID=19901491
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NO19976150A NO324782B1 (en) | 1997-12-30 | 1997-12-30 | Method for improving the transmission of a connection from one SGSN to another SGSN |
Country Status (5)
| Country | Link |
|---|---|
| KR (1) | KR100540353B1 (en) |
| AU (1) | AU2193699A (en) |
| NO (1) | NO324782B1 (en) |
| TW (1) | TW437242B (en) |
| WO (1) | WO1999034635A2 (en) |
Families Citing this family (22)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FI108832B (en) * | 1999-03-09 | 2002-03-28 | Nokia Corp | IP routing optimization in an access network |
| EP1175795A1 (en) * | 1999-04-30 | 2002-01-30 | Nokia Corporation | Sgsn semi anchoring during the inter sgsn srnc relocation procedure |
| AU5862600A (en) * | 1999-06-21 | 2001-01-09 | Telefonaktiebolaget Lm Ericsson (Publ) | Method of handing over mobile stations in a general packet radio service (gprs) radio telecommunications network |
| US6301479B1 (en) | 1999-07-08 | 2001-10-09 | Telefonaktiebolaget Lm Ericsson | Technique for providing a secure link in a mobile communication system |
| DE60030404T2 (en) * | 2000-02-22 | 2007-02-22 | Lucent Technologies Inc. | Procedures for passing on real-time connections in wireless communication systems |
| US6879820B2 (en) | 2000-07-12 | 2005-04-12 | Telefonaktiebolaget Lm Ericsson (Publ) | Charging in communication networks having split control planes and user planes |
| US7103002B2 (en) | 2000-07-12 | 2006-09-05 | Telefonktiebolaget Lm Ericsson (Publ) | Communication management in networks having split control planes and user planes |
| KR100403731B1 (en) * | 2000-08-23 | 2003-10-30 | 삼성전자주식회사 | Core network separation structure an signal processing method thereof in mobile communication system |
| SE0003920D0 (en) * | 2000-10-24 | 2000-10-24 | Ericsson Telefon Ab L M | Method and means in a telecommunication system |
| US6973054B2 (en) | 2001-01-05 | 2005-12-06 | Telefonaktiebolaget Lm Ericsson (Publ) | Communication management in mobile networks having split control planes and user planes |
| US7136363B2 (en) | 2001-01-09 | 2006-11-14 | Nokia Corporation | Method and apparatus for improving radio spectrum usage and decreasing user data delay when providing packet PSI status |
| GB2374494A (en) * | 2001-04-12 | 2002-10-16 | Ericsson Telefon Ab L M | SGSN handover in a GPRS Network |
| EP1253736A3 (en) * | 2001-04-26 | 2003-12-10 | NTT DoCoMo, Inc. | Data link transmission control for mobile communications |
| KR100798534B1 (en) * | 2001-09-11 | 2008-01-28 | 에스케이 텔레콤주식회사 | Method for providing a pre-paid service in a mobile telecommunication network |
| NO20014865D0 (en) * | 2001-10-05 | 2001-10-05 | Ericsson Telefon Ab L M | Optimization of handover procedures in GPRS |
| KR100423148B1 (en) * | 2001-11-16 | 2004-03-16 | 삼성전자주식회사 | A srns relocation method of a packet network one of the asynchronous imt-2000 telecommunication network and the srsn relocation system |
| KR100399056B1 (en) * | 2001-11-21 | 2003-09-26 | 한국전자통신연구원 | Method of Wireless Communication Resource Allocation by Variable QoS Parameter Negotiation in Wireless Network |
| EP1495593B1 (en) | 2002-04-10 | 2006-06-21 | Telefonaktiebolaget LM Ericsson (publ) | Data preservation |
| CN100420311C (en) * | 2002-11-04 | 2008-09-17 | 广达电脑股份有限公司 | Method for resetting controller of serving wireless network in wireless telecommunication system |
| US7260397B2 (en) * | 2002-12-27 | 2007-08-21 | Nokia Corporation | Reconfiguration of a mobile telecommunications network element |
| FI116442B (en) * | 2003-09-15 | 2005-11-15 | Nokia Corp | Packet switched handover |
| CN100571468C (en) | 2005-08-31 | 2009-12-16 | 华为技术有限公司 | A kind of CS domain call ending system and method |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FI103083B (en) * | 1997-01-20 | 1999-04-15 | Nokia Telecommunications Oy | Packet radio networks and the procedure for updating the routing area |
| FI972725A (en) * | 1997-06-24 | 1998-12-25 | Nokia Telecommunications Oy | re-routing |
-
1997
- 1997-12-30 NO NO19976150A patent/NO324782B1/en not_active IP Right Cessation
-
1998
- 1998-12-15 TW TW087120823A patent/TW437242B/en not_active IP Right Cessation
- 1998-12-18 WO PCT/SE1998/002396 patent/WO1999034635A2/en active IP Right Grant
- 1998-12-18 AU AU21936/99A patent/AU2193699A/en not_active Abandoned
- 1998-12-18 KR KR1020007007302A patent/KR100540353B1/en not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| TW437242B (en) | 2001-05-28 |
| NO976150D0 (en) | 1997-12-30 |
| AU2193699A (en) | 1999-07-19 |
| KR20010033775A (en) | 2001-04-25 |
| WO1999034635A2 (en) | 1999-07-08 |
| NO976150L (en) | 1999-07-01 |
| KR100540353B1 (en) | 2006-01-10 |
| WO1999034635A3 (en) | 1999-08-19 |
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