EP1125420A1 - Transmission tunnel couche 2 pour la communication de donnees dans des reseaux sans fil - Google Patents

Transmission tunnel couche 2 pour la communication de donnees dans des reseaux sans fil

Info

Publication number
EP1125420A1
EP1125420A1 EP99971983A EP99971983A EP1125420A1 EP 1125420 A1 EP1125420 A1 EP 1125420A1 EP 99971983 A EP99971983 A EP 99971983A EP 99971983 A EP99971983 A EP 99971983A EP 1125420 A1 EP1125420 A1 EP 1125420A1
Authority
EP
European Patent Office
Prior art keywords
network
data
wireless
layer
interface
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.)
Withdrawn
Application number
EP99971983A
Other languages
German (de)
English (en)
Inventor
David COMSTOCK
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Telefonaktiebolaget LM Ericsson AB
Original Assignee
Telefonaktiebolaget LM Ericsson AB
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Telefonaktiebolaget LM Ericsson AB filed Critical Telefonaktiebolaget LM Ericsson AB
Publication of EP1125420A1 publication Critical patent/EP1125420A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00—Data switching networks
    • H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
    • H04L12/46—Interconnection of networks
    • H04L12/4633—Interconnection of networks using encapsulation techniques, e.g. tunneling
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L69/00—Network arrangements, protocols or services independent of the application payload and not provided for in the other groups of this subclass
    • H04L69/16—Implementation or adaptation of Internet protocol [IP], of transmission control protocol [TCP] or of user datagram protocol [UDP]
    • H04L69/168—Implementation or adaptation of Internet protocol [IP], of transmission control protocol [TCP] or of user datagram protocol [UDP] specially adapted for link layer protocols, e.g. asynchronous transfer mode [ATM], synchronous optical network [SONET] or point-to-point protocol [PPP]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L69/00—Network arrangements, protocols or services independent of the application payload and not provided for in the other groups of this subclass
    • H04L69/16—Implementation or adaptation of Internet protocol [IP], of transmission control protocol [TCP] or of user datagram protocol [UDP]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W80/00—Wireless network protocols or protocol adaptations to wireless operation
    • H04W80/02—Data link layer protocols
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W92/00—Interfaces specially adapted for wireless communication networks
    • H04W92/04—Interfaces between hierarchically different network devices
    • H04W92/14—Interfaces between hierarchically different network devices between access point controllers and backbone network device

Definitions

  • the present invention relates generally to data communications in wireless networks.
  • Modern wireless data networks typically include different kinds of data links that are used to transport data between two elements in the network. For example, when a mobile station (MS) within the data network sends a signal to an end destination in the data network, the signal can travel from the MS over an air interface wireless link to a base station (BS) or a mobile switching center (MSC).
  • the BS can be, for example, a base transceiver station (BTS), and a base station controller (BSC).
  • BTS base transceiver station
  • BSC base station controller
  • the BS can also be referred to as an RNC.
  • the signal After arriving at the BS or MSC, the signal can then be relayed over a non-wireless link such as a landline, a public switched telephone network (PSTN) with a modem at each end, an internet protocol (IP) network, etc., and onward through the data network via the same or different links to the end destination.
  • a non-wireless link such as a landline, a public switched telephone network (PSTN) with a modem at each end, an internet protocol (IP) network, etc.
  • FIG. 1 shows a partial Network Reference Model for a TIA TR45 network (TSB 100).
  • TTB 100 TR45 Wireless Network Reference Model
  • the interworking function (IWF) 102 supports data communications in wireless data networks by "interworking" between a) protocols used to carry data over wireless air interface links, as for example between an MS and a BS or an MSC, and b) protocols used to carry the data onward through the data network via, for example, landlines.
  • An IWF can be located, for example, at a BS or an MSC.
  • a Y reference point 148 is defined in the IS-634 and IS-658 telecommunication standards (which are hereby incorporated by reference) as an interface between a wireless network entity (WNE) 134 and an IWF 102.
  • the WNE is 134 is usually an MSC or a BS.
  • IS-634 defines an A interface between an MSC and a BS, and between two
  • IS-634 also includes a specification for data transport between a BS and an IWF, and between an MSC and an IWF on the BS side of a network when the IWF is in the MSC.
  • IS-658 defines an L interface between the MSC or BS and the IWF, and is included in the Y reference point.
  • the IS-658 standard has been defined by TR45.5, the IS-95 air interface standardization working group within TIA.
  • the IWF 102 shown in FIG. 1 is connected to a packet network PPDN 150 by a Pi interface 104.
  • a radio link protocol (RLP) for a wireless link between a BS and an MS in the system can be terminated in the BS.
  • Transport of data from the BS to other portions of the wireless data network system depends on the configuration of the system.
  • FIG. 2 shows, for example, a configuration where an IWF 202 is connected to a BS by an L interface 266 and a PSTN path 268.
  • the L interface is an open interface between the IWF 202 and the BS 260, and Framerelay is specified for data transport across the L interface 266 in IS-658.
  • Switched virtual circuits SVCs
  • T1.617 which is hereby incorporated by reference
  • FIG. 2 also shows A interfaces Al 262 and A2 264 between the MSC 246 and the BS 260, which are specified in accordance with the IS-634 telecommunications standard.
  • the L interface 266 also has the characteristic that where a first user having an MS communicates with a second user having an MS or with any other kind of device (e.g. , a non-mobile device) over the wireless data network system through the L interface 266, user-to-user parameters can be added to T 1.617 messages moving across the L interface 266 as necessary.
  • a first user having an MS communicates with a second user having an MS or with any other kind of device (e.g. , a non-mobile device) over the wireless data network system through the L interface 266, user-to-user parameters can be added to T 1.617 messages moving across the L interface 266 as necessary.
  • the IWF can include landline modems (such as V.34 modems) for transporting the data to another landline modem.
  • a "voice" circuit such as the IS-634 type interface A2 264 shown in FIG. 2 can be used to transport digitized modem signals between the IWF 202 and the MSC 246 via the BS 260.
  • the IWF 202 connects directly to an IP network (not shown) and does not use landline modems, thereby bypassing the MSC 246.
  • FIG. 3 shows a configuration different from the configuration shown in FIG. 2.
  • the IWF 302 is connected to the MSC 346 instead of the BS 360, and the L interface 366 is located between the MSC 346 and the IWF 302.
  • the RLP for a wireless link between an MS and the wireless data network system can be terminated in the BS 360, as in FIG. 2.
  • An A5 interface 364 in accordance with the IS-634 standard is provided to transport data between the BS 360 and the MSC 346.
  • the A5 interface 364 employs the Intersystem Link Protocol (ISLP) defined in the IS-728 standard (which is hereby incorporated by reference), which uses flag stuffing to rate-adapt data flowing over the A5 interface 364 to bring it up to 64 kilobytes per second (64 kbps).
  • ISLP Intersystem Link Protocol
  • the A5 interface 364 is limited to 64 kbps.
  • circuit switched modem signals are transported back to the MSC 346 for connection with a PSTN (not shown).
  • packet data is connected to an IP network (not shown) at the IWF 302 and would not need to be transported to the MSC 346. Since the L interfaces 266 and 366 shown in FIGS. 2 & 3 are based on Framerelay, one channel is not limited to a particular bandwidth.
  • FIG. 4 shows a protocol layer stack when an L interface based on IS-658 is used in a wireless data network system.
  • the wireless air interface U m can be configured in accordance with other standards.
  • the wireless air interface U m can have a time division multiple access (TDMA) configuration.
  • TDMA time division multiple access
  • the IWF is located in the MSC, and the RLP is terminated in the iWF.
  • the interface between the MS and the IWF is standardized at the data link layer, but the data transport is not specified.
  • the A5 interface in accordance with IS-634 can be used if the transcoders are in the BS.
  • the L interface can be used for the interface between a modem and the point where the RLP is teirninated in the IWF.
  • packet protocols can be implemented.
  • the wireless data network systems described above have a limitation, in that the bandwidth between the BS and the MSC is limited to 64 kbps when the IWF is located between the MSC and an MS and the A5 interface is used, as shown for example in FIG. 3.
  • This limitation will become increasingly restrictive as future systems are implemented,. particularly with respect to third generation systems.
  • the L interface shown in FIGS. 2 & 3 specifies (and thereby requires) that transport across the L interface is Framerelay. This excludes other transport networks such as asynchronous transfer mode (ATM) networks, Ethernet networks, etc. that may desirable for a variety of reasons, including increased versatility.
  • ATM asynchronous transfer mode
  • IP networking and the Layer 2 Tunneling Protocol are used to transport data in a wireless data network between the IWF and a point where the RLP is terminated.
  • Wireless data networks in accordance with the invention confer several significant advantages. First, the 64 kbps limitation of the A5 interface is removed. Second, the greater flexibility of IP networking is provided. Third, wireless data networks in accordance with embodiments of the invention do not require a specific transport network, and can therefore use a variety of transport networks including Framerelay, ATM PVCs, etc. Fourth, embodiments of the invention are compatible with a general trend within the telecommunications industry of networks migrating to IP.
  • FIG. 1 is diagram of a partial Network Reference Model for TIA TR45 networks.
  • FIG. 2 is a diagram showing a first configuration of an IWF, an MSC, and a BS in a wireless data network. .
  • FIG. 3 is a diagram showing a second configuration of an IWF, an MSC, and a BS in a wireless data network.
  • FIG. 4 is a diagram showing a protocol layer stack in a wireless data network using either of the configurations shown in FIGS. 2 & 3.
  • FIG. 5 is a diagram showing a protocol layer stack in a wireless data network according to an embodiment of the invention.
  • FIG. 6 is a general block diagram of a wireless data network in accordance with various embodiments of the invention.
  • IP networking and the Layer 2 Tunneling Protocol are used to transport data in a wireless data network between the IWF and a point where the RLP is terminated.
  • L2TP is specified in the IETF (which is hereby incorporated by reference), and is both connection-oriented and transport independent.
  • L2TP is also extensible, i.e., additional parameters can be added to support various functions required in specific implementations or applications of L2TP. As shown in FIG. 6, in accordance with embodiments of the invention the
  • L2TP can be used in a wireless data network between the BS 660 and the MSC 646, between the MSC 646 and the IWF 602, or between the IWF 602 and the BS 660.
  • Wireless data networks in accordance with the invention confer several significant advantages.
  • Third, wireless data networks in accordance with embodiments of the invention do not require a specific transport network, and can therefore use a variety of transport networks including Framerelay, ATM PVCs, etc.
  • Fourth, embodiments of the invention are compatible with a general trend within the telecommunications industry of networks migrating to IP. It will be appreciated by those skilled in the art that the present invention can be embodied in other specific forms without departing from the spirit or essential characteristics thereof, and that the invention is not limited to the specific embodiments described herein. The presently disclosed embodiments are therefore considered in all respects to be illustrative and not restrictive. The scope of the invention is indicated by the appended claims rather than the foregoing description, and all changes that come within the meaning and range and equivalents thereof are intended to be embraced therein.

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Computer Security & Cryptography (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

Dans un mode de réalisation de l'invention, le réseautage IP et le protocole de transmission tunnel, couche 2 (L2TP), sont utilisés dans un réseau de transmission de données sans fil, pour le transport de données entre un moyen d'interfonctionnement (IWF) et un point où se termine un protocole de liaison radio (RLP).
EP99971983A 1998-11-06 1999-11-04 Transmission tunnel couche 2 pour la communication de donnees dans des reseaux sans fil Withdrawn EP1125420A1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US18733998A 1998-11-06 1998-11-06
US187339 1998-11-06
PCT/SE1999/001996 WO2000028714A1 (fr) 1998-11-06 1999-11-04 Transmission tunnel couche 2 pour la communication de donnees dans des reseaux sans fil

Publications (1)

Publication Number Publication Date
EP1125420A1 true EP1125420A1 (fr) 2001-08-22

Family

ID=22688574

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99971983A Withdrawn EP1125420A1 (fr) 1998-11-06 1999-11-04 Transmission tunnel couche 2 pour la communication de donnees dans des reseaux sans fil

Country Status (4)

Country Link
EP (1) EP1125420A1 (fr)
AU (1) AU1435200A (fr)
CA (1) CA2349251A1 (fr)
WO (1) WO2000028714A1 (fr)

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EP1239686A1 (fr) * 2001-03-08 2002-09-11 Lucent Technologies Inc. Réseau d'accès radio UMTS basé sur le Protocol Internet
US6714777B1 (en) 2000-11-22 2004-03-30 Winphoria Networks, Inc. System and method of managing supplementary features in the presence of a proxy switch in a mobile communications network
US6625449B1 (en) 2000-11-22 2003-09-23 Winphoria Netwroks, Inc. System and method of siphoning messages from a mobile network to an alternative network
US6650909B1 (en) 2000-11-22 2003-11-18 Winphoria Networks, Inc. System and method of preserving point codes in a mobile network having a proxy switch
US6850763B1 (en) * 2000-11-22 2005-02-01 Winphoria Networks, Inc. System and method of servicing mobile communications with a proxy switch
US6801771B1 (en) 2000-11-22 2004-10-05 Winphoria Networks, Inc. System and method of mobility management in a mobile communications network having a proxy switch
GB2371954B (en) 2001-02-01 2003-02-19 3Com Corp Interface system for wireless node and network node
US8059672B2 (en) * 2005-05-18 2011-11-15 Sprint Communications Company L.P. Internet communications between wireless base stations and service nodes
CN1956353B (zh) * 2005-10-28 2011-07-20 华为技术有限公司 基于隧道进行流管理的方法和无线接入中转系统
US8565217B2 (en) * 2006-06-07 2013-10-22 Qualcomm Incorporated Methods and apparatus for supporting tunneling related to wireless downlink signaling flows
CN101433055A (zh) * 2006-06-07 2009-05-13 高通股份有限公司 用于使用控制值以控制通信处理的方法和设备
US8565216B2 (en) * 2006-06-07 2013-10-22 Qualcomm Incorporated Methods and apparatus for supporting tunneling related to wireless uplink signaling flows
SE531960C2 (sv) * 2007-01-26 2009-09-15 Smartrefill I Helsingborg Ab Metod för säker exekvering av en betalningstransaktion
US8681626B1 (en) 2010-02-17 2014-03-25 Sprint Communications Company L.P. Translation of congestion notification indicators in a base station system

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SE9304119D0 (sv) * 1993-12-10 1993-12-10 Ericsson Ge Mobile Communicat Apparatuses and mobile stations for providing packet data communication in digital TDMA cellular systems
FI98027C (fi) * 1995-01-10 1997-03-25 Nokia Telecommunications Oy Pakettiradiojärjestelmä ja päätelaitteisto pakettiradiojärjestelmää varten
FI105746B (fi) * 1995-09-29 2000-09-29 Nokia Mobile Phones Ltd Integroitu radioviestintäjärjestelmä
WO1997021313A1 (fr) * 1995-12-01 1997-06-12 Northern Telecom Limited Systeme mobile de communication utilisant des paquets de donnees
US5850391A (en) * 1996-10-17 1998-12-15 Telefonaktiebolaget L M Ericsson Shared interworking function within a mobile telecommunications network

Non-Patent Citations (1)

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Title
See references of WO0028714A1 *

Also Published As

Publication number Publication date
CA2349251A1 (fr) 2000-05-18
AU1435200A (en) 2000-05-29
WO2000028714A1 (fr) 2000-05-18

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