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WO2004077757A1 - Procede pour conclure des liaisons de donnees dans un reseau local sans fil - Google Patents

Procede pour conclure des liaisons de donnees dans un reseau local sans fil Download PDF

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Publication number
WO2004077757A1
WO2004077757A1 PCT/DE2003/004195 DE0304195W WO2004077757A1 WO 2004077757 A1 WO2004077757 A1 WO 2004077757A1 DE 0304195 W DE0304195 W DE 0304195W WO 2004077757 A1 WO2004077757 A1 WO 2004077757A1
Authority
WO
WIPO (PCT)
Prior art keywords
messages
wlan
data
network
sip
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.)
Ceased
Application number
PCT/DE2003/004195
Other languages
German (de)
English (en)
Inventor
Jochen Grimminger
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.)
Siemens AG
Siemens Corp
Original Assignee
Siemens AG
Siemens Corp
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 Siemens AG, Siemens Corp filed Critical Siemens AG
Publication of WO2004077757A1 publication Critical patent/WO2004077757A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W28/00—Network traffic management; Network resource management
    • H04W28/16—Central resource management; Negotiation of resources or communication parameters, e.g. negotiating bandwidth or QoS [Quality of Service]
    • H04W28/24—Negotiating SLA [Service Level Agreement]; Negotiating QoS [Quality of Service]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L47/00—Traffic control in data switching networks
    • H04L47/10—Flow control; Congestion control
    • H04L47/15—Flow control; Congestion control in relation to multipoint traffic
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L47/00—Traffic control in data switching networks
    • H04L47/70—Admission control; Resource allocation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L47/00—Traffic control in data switching networks
    • H04L47/70—Admission control; Resource allocation
    • H04L47/80—Actions related to the user profile or the type of traffic
    • H04L47/808—User-type aware
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L47/00—Traffic control in data switching networks
    • H04L47/70—Admission control; Resource allocation
    • H04L47/82—Miscellaneous aspects
    • H04L47/824—Applicable to portable or mobile terminals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L47/00—Traffic control in data switching networks
    • H04L47/70—Admission control; Resource allocation
    • H04L47/82—Miscellaneous aspects
    • H04L47/825—Involving tunnels, e.g. MPLS
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L9/00—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols
    • H04L9/40—Network security protocols
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W40/00—Communication routing or communication path finding
    • H04W40/24—Connectivity information management, e.g. connectivity discovery or connectivity update
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W48/00—Access restriction; Network selection; Access point selection
    • H04W48/18—Selecting a network or a communication service
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W84/00—Network topologies
    • H04W84/02—Hierarchically pre-organised networks, e.g. paging networks, cellular networks, WLAN [Wireless Local Area Network] or WLL [Wireless Local Loop]
    • H04W84/10—Small scale networks; Flat hierarchical networks
    • H04W84/12—WLAN [Wireless Local Area Networks]

Definitions

  • the invention relates to a method for transmitting data in a WLAN network and a corresponding device for transmitting such data and a corresponding data network.
  • WLAN stands for "Wireless Local Area Network” and refers to a local wireless network with ranges of a few hundred meters.
  • users of end devices in particular mobile radio devices and laptops, have the option of logging into commercially operated WL ⁇ N networks at any location.
  • the user can locate a large number of WLAN networks via his terminal, each WLAN network comprising so-called access nodes (usually referred to as access points), via which the user can access further data networks, in particular the Internet or UMTS networks , can provide.
  • access nodes usually referred to as access points
  • the object of the invention is therefore to provide a method for transmitting data in a WL ⁇ N network, in which the user can check which data connection via the Access node of the WLAN network is suitable for its needs.
  • the WLAN messages contain specific messages about possible data connections of the terminal via the access node to data networks that can be connected to the WLAN network. This makes it possible to direct inquiries or information regarding possible data connections to the access node or to data networks that can be connected to the access node. Before the data connection is initialized, it can thus be clarified whether a data connection desired by the user is possible or which data connections can be established at all via the WLAN network.
  • the specific messages are evaluated and, depending on the evaluation, a decision is made as to whether or which data connection of the terminal via the access node to one or more of the data networks which can be connected to the WLAN network is used for data transmission.
  • the user of the terminal can thus automatically be provided with the data connection he or she wishes, or the user can be informed that the data connection required for his purposes is not possible at all via the WLAN network.
  • the specific messages preferably contain requests and / or information relating to the authentication of the terminal at the access node and / or in one or more of the data networks that can be connected to the WLAN network. Furthermore, the specific messages preferably contain requests and / or information relating to one or more data connection types and / or data connection qualities and / or data connection east and / or services provided by the data connection. The user of the terminal is thus given a variety of decision criteria according to which he can specify his desired data connection.
  • the specific messages are tunneled in the WLAN messages.
  • SIP Session Initiation Protocol
  • SDP Session Description Protocol
  • SIP / SDP messages ensures transmission of the specific messages in other networks, for example in IP-based networks, which are usually connected to WLAN access nodes.
  • the SIP / SDP messages can be, for example, probe request and / or probe response messages of the WL ⁇ N protocol. Alternatively, however, the messages can also be newly defined messages in the WLAN protocol.
  • EAP Extensible Authentication Protocol
  • the EAP protocol is well known from the prior art (see for example [4]). This protocol is used to provide authentication mechanisms for a point-to-point connection, the mechanisms Digest, Kerberos, USIM and the like known from the prior art being used in particular as authentication mechanisms. This ensures authentication in all data networks that understand the SIP protocol.
  • XML is a well-known description language for documents (see [6]).
  • the WLAN messages are messages in accordance with the WLAN standard IEEE 802.11.
  • the networks that can be connected to the WLAN network preferably comprise one or more 3GPP and / or IP networks.
  • the invention also includes a device for Transmission of data in a WLAN network, the device comprising:
  • WLAN messages can be transmitted in the L2 protocol layer between the access node and a terminal, and specific messages about possible data connections of the terminal can be transmitted in the WLAN messages via the access node to networks that can be connected to the WLAN network,
  • a computing unit connected to the access node for evaluating the specific messages.
  • the computing unit is an SIP proxy CSCF server. Furthermore, the computing unit is preferably integrated in the access node.
  • the invention comprises a data network with a WLAN network and one or more networks which can be connected to the WLAN network, the data network being designed such that the method according to the invention described above can be carried out.
  • Figure 1 is a schematic representation of a data network in which the data transmission method according to the invention can be carried out
  • Figure 2 shows an overview of the messages used in the WLAN protocol. That in ; " Figure -il schematically shown data network.” Includes a WLAN network 1, an IP network 2 and a 3GPP network 3.
  • AP Access Point
  • P-CSCF proxy CSCF server
  • An IP network 2 is connected to the access node AP or to the P-CSCF server P-CSCF. This network is in turn connected to a 3GPP network 3.
  • the 3GPP network comprises a large number of components with the designations SGSN, GGSN, HSS,
  • IMS IMS, P-CSCF, I-CSCF, S-CSCF and PDGW.
  • the components designated with these abbreviations are well-known building blocks of a 3GPP network and the terms hidden behind the abbreviations are generally known to the person skilled in the art. Since the structure of the 3GPP network does not play a decisive role for the method according to the invention, this structure will not be discussed in more detail below. It should only be mentioned that the IP network is connected to the 3GPP network via the gateway PDGW.
  • WLAN messages in the L2 protocol layer are exchanged between the user terminal UE and the access node AP, SIP messages containing SDP messages being tunneled in the WLAN messages.
  • SIP messages are generated without the assignment of an IP address and can be processed by the P-CSCF server, which is connected to the access node AP.
  • the method according to the invention is characterized in that in the embodiment described here, inquiries or information about possible data connections of the terminal UE are transmitted in the SDP messages via the access node AP to the IP network 2 and / or the 3GPP network 3. These inquiries or information can in particular include an access request which is determined by the user of the terminal.
  • the access request can relate to the type of data connection with which data transmission via the access node is to take place.
  • the user can specify that the data connection should take place over the Internet.
  • such a request can relate to a bandwidth desired by the user or a delay or jitter of the data connection. It is therefore possible to select the provider, for example in foreign foreign networks, according to predetermined criteria.
  • the arrows P1, P2 and P3 in FIG. 1 show, for example, the path of a request sent by the terminal UE.
  • the request is transmitted in the form of a SIP message and first reaches the access node AP and the P-CSCF server P-CSCF connected to the access node via the path P1.
  • This server can interpret and evaluate SIP messages.
  • the SIP messages are forwarded to further P-CSCF or S-CSCF servers, as indicated by arrows P2 or P3 is indicated.
  • the content of the SIP messages makes it clear which server is responsible for the terminal UE - for example for authentication - and this server is addressed via the SIP messages.
  • the data connection can then be initialized.
  • the great advantage here is that it can be clarified before the data connection is initialized whether the data connection even meets the requirements desired by the user. Furthermore, it can be determined which data connections are available at all, and the user can select an adequate data connection from the available data connections.
  • EAP Extensible Authentication Protocol
  • SIP Session Initiation Protocol
  • SIP authentication mechanisms Mechanisms known to the person skilled in the art, for example Kerberos or Digest, are used as SIP authentication mechanisms. Since the EAP protocol also serves as a carrier for the transmission of encryption information, an effective combination of authentication, key assignment and encryption is achieved with the transmission of specific messages for possible data connections.
  • the SIP authentication data contained in the EAP messages are extracted, for example using the RADIUS protocol in the form of so-called radius key value pairs. Since the RADIUS protocol is a widely used protocol, the compatibility of the authentication in the various data networks is ensured. It should be noted here that it is possible to use SIP authentication data in the RADIUS protocol, since both protocols have the same Use authentication mechanisms. In extreme cases, the SIP authentication data from the SIP messages can even so-1 on the extraction be dispensed with and the SIP messages can be transferred in total to the RADIUS protocol.
  • FIG. 2 shows a table in which the data types used in the WLAN protocol are listed. These data types are well known to the person skilled in the art. For the transmission of the specific messages according to the invention, firstly known messages, in particular the “probe request X ” or “probe response” mentioned in FIG. However, new data types can also be created. Corresponding data types with the designation "Reserved” are provided for this.

Landscapes

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

Abstract

L'invention concerne un procédé pour la transmission de données dans un réseau local sans fil (1), selon lequel des informations de réseau local sont transmises dans la couche 2 du protocole entre un terminal (UE) et un noeud d'accès (AP) du réseau local sans fil (1). Les informations de réseau local contiennent des informations spécifiques sur des liaisons de données possibles, par l'intermédiaire du noeud d'accès (AP), du terminal (UE) à des réseaux de données (2, 3) pouvant être connectés au réseau local sans fil (1).
PCT/DE2003/004195 2003-02-28 2003-12-18 Procede pour conclure des liaisons de donnees dans un reseau local sans fil Ceased WO2004077757A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10308934.9 2003-02-28
DE10308934 2003-02-28

Publications (1)

Publication Number Publication Date
WO2004077757A1 true WO2004077757A1 (fr) 2004-09-10

Family

ID=32920646

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DE2003/004195 Ceased WO2004077757A1 (fr) 2003-02-28 2003-12-18 Procede pour conclure des liaisons de donnees dans un reseau local sans fil

Country Status (1)

Country Link
WO (1) WO2004077757A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102612078A (zh) * 2011-01-25 2012-07-25 电信科学技术研究院 一种无线接入系统、装置及数据传输方法
CN114158028A (zh) * 2020-09-07 2022-03-08 中国移动通信有限公司研究院 数据网络鉴权方式适配方法、装置及可读存储介质

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6044403A (en) * 1997-12-31 2000-03-28 At&T Corp Network server platform for internet, JAVA server and video application server
US20010032262A1 (en) * 2000-02-10 2001-10-18 Jim Sundqvist Method and apparatus for network service reservations over wireless access networks
WO2002005492A1 (fr) * 2000-07-12 2002-01-17 Sharewave, Inc. Flux multimedia et qualite de services dans des reseaux familiaux sans fil

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6044403A (en) * 1997-12-31 2000-03-28 At&T Corp Network server platform for internet, JAVA server and video application server
US20010032262A1 (en) * 2000-02-10 2001-10-18 Jim Sundqvist Method and apparatus for network service reservations over wireless access networks
WO2002005492A1 (fr) * 2000-07-12 2002-01-17 Sharewave, Inc. Flux multimedia et qualite de services dans des reseaux familiaux sans fil

Non-Patent Citations (4)

* Cited by examiner, † Cited by third party
Title
BYERLY B J ET AL: "SIP Authentication using CHAP-Password", IETF INTERNET DRAFT, XX, XX, October 2000 (2000-10-01), pages 1 - 12, XP002279177 *
CAMARILLO, MARHALL, ROSENBERG: "RFC 3312: Integration of Resource Management and SIP", REQUEST FOR COMMENTS, - October 2002 (2002-10-01), pages 1 - 24, XP002281085 *
SRINIVAS ET AL: "Mapping of Basic and Digest Authentication to DIAMETER AAA Messages", IETF INTERNET DRAFT, XX, XX, 13 July 2001 (2001-07-13), pages 1 - 23, XP002279176 *
STERMAN B ET AL: "RADIUS Extension for Digest Authentication", IETF INTERNET DRAFT, XX, XX, 12 November 2001 (2001-11-12), pages 1 - 9, XP002279178 *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102612078A (zh) * 2011-01-25 2012-07-25 电信科学技术研究院 一种无线接入系统、装置及数据传输方法
CN114158028A (zh) * 2020-09-07 2022-03-08 中国移动通信有限公司研究院 数据网络鉴权方式适配方法、装置及可读存储介质

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