Classifications

• • H—ELECTRICITY
  • H04—ELECTRIC COMMUNICATION TECHNIQUE
  • H04W—WIRELESS COMMUNICATION NETWORKS
  • H04W28/00—Network traffic management; Network resource management
  • H04W28/02—Traffic management, e.g. flow control or congestion control
  • H04W28/06—Optimizing the usage of the radio link, e.g. header compression, information sizing, discarding information
  • H04W28/065—Optimizing the usage of the radio link, e.g. header compression, information sizing, discarding information using assembly or disassembly of packets
• • H—ELECTRICITY
  • H04—ELECTRIC COMMUNICATION TECHNIQUE
  • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
  • H04L12/00—Data switching networks
  • H04L12/54—Store-and-forward switching systems 
  • H04L12/56—Packet switching systems
  • H04L12/5691—Access to open networks; Ingress point selection, e.g. ISP selection
  • H04L12/5692—Selection among different networks
• • H—ELECTRICITY
  • H04—ELECTRIC COMMUNICATION TECHNIQUE
  • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
  • H04L45/00—Routing or path finding of packets in data switching networks
  • H04L45/38—Flow based routing
• • H—ELECTRICITY
  • H04—ELECTRIC COMMUNICATION TECHNIQUE
  • H04W—WIRELESS COMMUNICATION NETWORKS
  • H04W28/00—Network traffic management; Network resource management
  • H04W28/02—Traffic management, e.g. flow control or congestion control
  • H04W28/06—Optimizing the usage of the radio link, e.g. header compression, information sizing, discarding information
• • H—ELECTRICITY
  • H04—ELECTRIC COMMUNICATION TECHNIQUE
  • H04W—WIRELESS COMMUNICATION NETWORKS
  • H04W28/00—Network traffic management; Network resource management
  • H04W28/02—Traffic management, e.g. flow control or congestion control
  • H04W28/10—Flow control between communication endpoints
  • H04W28/14—Flow control between communication endpoints using intermediate storage
• • H—ELECTRICITY
  • H04—ELECTRIC COMMUNICATION TECHNIQUE
  • H04W—WIRELESS COMMUNICATION NETWORKS
  • H04W72/00—Local resource management
  • H04W72/02—Selection of wireless resources by user or terminal
• • H—ELECTRICITY
  • H04—ELECTRIC COMMUNICATION TECHNIQUE
  • H04W—WIRELESS COMMUNICATION NETWORKS
  • H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
  • H04W88/02—Terminal devices
  • H04W88/04—Terminal devices adapted for relaying to or from another terminal or user

Definitions

• the present invention relates to a method of and apparatus for directing packet entities in a telecommunications system.
• Examples of the different standards and/or specifications for wireless communication include, without limiting to these, specifications such as GSM (Global System for Mobile communications) or various GSM based systems (such as GPRS: General Packet Radio Service), AMPS (American Mobile Phone System), DAMPS (Digital AMPS), ' CDMA (Wideband Code Division Multiple Access) or TD/CDMA in UMTS (Time Division / Code Division Multiple Access in Universal Mobile Telecommunications System), IMT 2000 and so on.
• GSM Global System for Mobile communications
• GSM based systems such as GPRS: General Packet Radio Service
• AMPS American Mobile Phone System
• DAMPS Digital AMPS
• ' CDMA Wideband Code Division Multiple Access
• TD/CDMA Time Division / Code Division Multiple Access in Universal Mobile Telecommunications System
• Each of the cells of the cellular system can be served by an appropriate transceiver apparatus.
• the cell is served by Node B, which is connected to and controlled by an element called as a radio network controller (RNC) node.
• RNC radio network controller
• the cell is served by a base station
• BTS base station controller
• MSC mobile switching center
• GPRS support node or similar facility.
• the controllers of a network are typically interconnected and there may be one or more gateways, such as a Gateway MSC (GMSC) or a Gateway GPRS support node (GGSN) , for connecting the cellular network to other networks, such as to circuit or packet switched telephone or data networks, such as the Internet or an intranet.
• GMSC Gateway MSC
• GGSN Gateway GPRS support node
• the gateway node provides one or several access points for the network to another network, that is - a connection point between the two networks .
• the telecommunications network may be capable of providing wireless packet switched services.
• Examples of such networks include the GPRS (General Packet Radio Service) network, EDGE (enhanced data rate for GSM evolution) Mobile Data Network or an appropriate third generation telecommunication system such as the CDMA (code ' division multiple access) , WCDMA (wideband code division multiple access) or TDMA (time division multiple access) based 3 rd generation telecommunication systems that are sometimes referred to as Universal Mobile Telecommunication System (UMTS) . All these relate to the transfer of data to and from mobile stations.
• the GPRS standard is provided in conjunction with the GSM (Global System for Mobile communications) standard.
• the GSM standard is a circuit switched service and is originally designed for speech services .
• the GPRS networks are described in more detail e.g. in 3GPP Technical Specification 3G TS 23.060 version 3.2.0, "General Packet Radio Service (GPRS); Service description; Stage 2", January 2000. This document is incorporated herein by reference.
• An adaptation of the GPRS standard is also being proposed for use with the third generation standard UMTS, which typically uses wideband code division ⁇ multiple _access.
• the packet data part of the UMTS is contained in the above referenced 23.060 specification, i.e. 23.060 applies for packet switched data both for the UMTS and the GPRS.
• the primary PDP context is the first PDP context established for a specific PDP (or IP) address. There may still be further PDP context for the same address and APN. They are called secondary PDP contexts.
• a gateway node such as the GGSN has to classify downlink (that is in the direction from the base station to the user equipment) IP packets received ' with an IP address in order to carry those IP packets on the correct PDP context.
• this proposal has the problem that the packet classification by the GGSN does not work if the packets are fragmented. This is because the GGSN uses TFT (Traffic Flow Template) information and PDP address to classify the packets.
• TFT Traffic Flow Template
• TFT includes information available in IP and transport layer, e.g. TCP or UDP, headers, e.g. source address (es), source port(s) and destination port(s).
• IP and transport layer e.g. TCP or UDP
• headers e.g. source address (es), source port(s) and destination port(s).
• the GGSN sends fragments without the transport header on the first PDP
• a method for directing a packet to a required bearer of a set of . bearers comprising the steps of:
• Figure 1 shown a communication network in which the embodiments of the present invention may be used; and Figure 2 shows an packet divided into fragment packets; and
• node B sometimes referred to -as " node B, for example in the third generation standards.
• the term base station will be used in this document to encompass all elements which transmit to wireless stations or the like via the air interface.
• a mobile station 1 i.e. the wireless user equipment is arranged to communicate with the respective base station.. It should be appreciated that the term mobile station is intended to cover any suitable type of wireless user equipment, such as portable data processing devi-ces and web browsers.

Landscapes

• Engineering & Computer Science (AREA)
• Computer Networks & Wireless Communication (AREA)
• Signal Processing (AREA)
• Data Exchanges In Wide-Area Networks (AREA)
• Auxiliary Devices For And Details Of Packaging Control (AREA)
• Container Filling Or Packaging Operations (AREA)

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Publications (1)

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Family Applications (1)

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Citations (3)

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• 2002
  • 2002-01-09 US US10/045,646 patent/US20030128701A1/en not_active Abandoned
• 2003
  • 2003-01-09 AT AT03729304T patent/ATE428242T1/de not_active IP Right Cessation
  • 2003-01-09 JP JP2003559087A patent/JP4741796B2/ja not_active Expired - Fee Related
  • 2003-01-09 CN CNB03802070XA patent/CN100440852C/zh not_active Expired - Fee Related
  • 2003-01-09 US US10/450,099 patent/US20040071127A1/en not_active Abandoned
  • 2003-01-09 WO PCT/IB2003/000409 patent/WO2003058892A1/en not_active Ceased
  • 2003-01-09 ES ES03729304T patent/ES2325614T3/es not_active Expired - Lifetime
  • 2003-01-09 RU RU2004124050/09A patent/RU2308813C2/ru not_active IP Right Cessation
  • 2003-01-09 DE DE60327044T patent/DE60327044D1/de not_active Expired - Lifetime
  • 2003-01-09 EP EP03729304A patent/EP1464146B1/en not_active Expired - Lifetime
  • 2003-01-09 AU AU2003235772A patent/AU2003235772A1/en not_active Abandoned
• 2004
  • 2004-07-14 ZA ZA2004/05591A patent/ZA200405591B/en unknown

Patent Citations (3)

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