WO2007037346A1 - PROCÉDÉ DE TRANSMISSION QoS À GRANDE VITESSE, ET NOEUD DE TRAITEMENT UTILISÉ DANS LE PROCÉDÉ - Google Patents

PROCÉDÉ DE TRANSMISSION QoS À GRANDE VITESSE, ET NOEUD DE TRAITEMENT UTILISÉ DANS LE PROCÉDÉ Download PDF

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Publication number
WO2007037346A1
WO2007037346A1 PCT/JP2006/319383 JP2006319383W WO2007037346A1 WO 2007037346 A1 WO2007037346 A1 WO 2007037346A1 JP 2006319383 W JP2006319383 W JP 2006319383W WO 2007037346 A1 WO2007037346 A1 WO 2007037346A1
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WO
WIPO (PCT)
Prior art keywords
qos
path
signaling
handover
access point
Prior art date
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PCT/JP2006/319383
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English (en)
Japanese (ja)
Inventor
Toyoki Ue
Takako Hori
Original Assignee
Matsushita Electric Industrial Co., Ltd.
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.)
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Publication date
Application filed by Matsushita Electric Industrial Co., Ltd. filed Critical Matsushita Electric Industrial Co., Ltd.
Publication of WO2007037346A1 publication Critical patent/WO2007037346A1/fr

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/24—Reselection being triggered by specific parameters
    • H04W36/26—Reselection being triggered by specific parameters by agreed or negotiated communication parameters
    • 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
    • H04L47/76—Admission control; Resource allocation using dynamic resource allocation, e.g. in-call renegotiation requested by the user or requested by the network in response to changing network conditions
    • H04L47/765—Admission control; Resource allocation using dynamic resource allocation, e.g. in-call renegotiation requested by the user or requested by the network in response to changing network conditions triggered by the end-points
    • H04L47/767—Admission control; Resource allocation using dynamic resource allocation, e.g. in-call renegotiation requested by the user or requested by the network in response to changing network conditions triggered by the end-points after changing the attachment point, e.g. after hand-off
    • 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
    • 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]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/0005—Control or signalling for completing the hand-off
    • H04W36/0011—Control or signalling for completing the hand-off for data sessions of end-to-end connection
    • H04W36/0019—Control or signalling for completing the hand-off for data sessions of end-to-end connection adapted for mobile IP [MIP]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W80/00—Wireless network protocols or protocol adaptations to wireless operation
    • H04W80/04—Network layer protocols, e.g. mobile IP [Internet Protocol]

Definitions

  • the present invention relates to a high-speed QoS handover method for a mobile terminal (mobile node) that performs wireless communication and a processing node used in the method, and in particular, a mobile Internet Protocol version 6 that is a next-generation Internet protocol.
  • the present invention relates to a high-speed QoS handover method in a mopile node that performs wireless communication using a protocol and a processing node used in the method.
  • NSIS Next Step In Signaling
  • QoS Quality of Service
  • Recent internet drafts include QoS sibling and mobility support in other NSIS (see Non-Patent Documents 2 to 4 below) in addition to general NSIS (see Non-Patent Documents 5 and 6 below). Needs and suggestions are described. Not all routers or terminals in the network are NSIS Entities (NE), but NEs have NSIS functionality. Not all NEs support QoS in mobility functions. Here, the NE with QoS function is called QNE (QoS NE).
  • QoS resources are reserved by each QNE along a path through which data is transferred.
  • a flow ID is used to identify a QoS packet guaranteed on the path. Since the flow ID includes the IP addresses of the data transmission side and the reception side (see Non-Patent Document 5 below), the flow ID changes when the IP address changes due to mobility movement such as handover.
  • session ID is used to identify a session between MN (Mobile Node) and CN (Correspondent Node). Therefore, the session ID remains the same even if the flow ID changes due to mobility movement.
  • a route (old path) 24 ′ and a route (new It has an important role to avoid double reservation in QoS handover, up to 12 CRN (Crossover Node) QNE located at the branch point with 34 '.
  • CRN Cross Node
  • the overlapping path part (between CN6CT and CRN12 ') and the new path part (CRN 12'-MN 1 (between) must be treated differently: CN6 (between T and CRN12' Status update and CRN12'—MN1 (needs QoS status reservation between T. Therefore, discovery of CRN12 'is one of the important issues in QoS handover. In order to avoid or minimize it must be processed quickly, but the CRN discovery takes time and increases the signaling load.
  • Non-Patent Document 7 proposes several techniques for solving such a problem.
  • the technology disclosed in Non-Patent Document 7 below suggests a proxy that realizes CRN discovery!
  • the MN sends a request including the old flow ID and session ID pair to the NAR (New Access Router) acting as a proxy.
  • the NAR sends a QU ERY message to the CN to find the upstream CRN.
  • Each QNE on the path gets a QUERY message, compares the old flow ID and session ID pair and checks whether it is a CRN.
  • the CN Upon receiving the QUERY message, the CN sends a QUERY message to the NAR to discover the downstream CRN that is not just the RE SPONSE message for the received QUERY message. It takes at least one RTT (Round Trip Time) to discover a CRN, and every time the MN performs a handover, the CRN must be discovered.
  • RTT Random Trip Time
  • a QNE In order to reduce the signaling load, one method is to specify a QNE as a CRN. A QNE on an old QoS path is specified as a CRN, and PAR (Previous Access Router) can be considered as the specified QNE. With this configuration, the signaling load can be reduced. Such techniques are disclosed in Patent Documents 1 and 2 below.
  • Non-Patent Document 1 NSIS WG (http://www.ietf.org/html.charters/nsis-charter.html)
  • Non-Patent Document 2 H. Shi haskar, Ed, "Requirements of a Quality of service (QoS) Solution for Mobile IP ", RFC3583, September 2003
  • Non-Patent Document 3 Sven Van den Bosch, Georgios Karagiannis and Andrew McDonald, "N SLP for Quality— of— Service signaling, draft-ietf-nsis-qos-nslp-06.txt, May 2005
  • Non-Patent Document 4 S.
  • Non-Patent Document 5 R. Hancock et al., “Next Steps in Signaling: Framework ", RFC4080, June 2005
  • Non-Patent Document 6 M. Brunner (Editor), Requirements for Signaling Protocols ", RFC372 6, April 2004
  • Patent Document 1 Japanese Patent No. 3441367 (Fig. 1)
  • Patent Document 2 Japanese Translation of Special Publication 2002-528976 (paragraphs 0024, 0032)
  • the present invention makes the QoS path reconfigured before handover as an optimum QoS path after handover as much as possible, and reduces the load of the reroute configuration of the QoS path performed after handover.
  • An object of the present invention is to provide a high-speed QoS handover method capable of minimizing the QoS interruption time and the processing node used in the method.
  • an access point in which a plurality of access routers, each constituting a subnet, are connected via a communication network to form a unique communicable area. And a plurality of access routers connected to each of the plurality of access routers, wherein the access router is connected to the access point through wireless communication with the access point within the communicable area.
  • a mobile terminal configured to perform communication of A high-speed QoS handover method by changing a QoS path when a connection is switched from a first access point connected to one access router to a second access point connected to a second access router.
  • the second access router to which the second access point is connected from a terminal of a communication partner of the mobile terminal itself with the predetermined QoS path power And passing through the first access router to which the first access point is connected is a preferred aspect of the present invention.
  • the QoS path reconfigured before the handover can be the optimum QoS path after the handover as much as possible.
  • the first signaling includes information on the QoS path before the handover.
  • the QoS path can be reconfigured before handover.
  • the information of the QoS path before the handover is session identification information and flow identification information.
  • the QoS path can be reconfigured before handover.
  • the processing node after the predetermined QoS path is configured and the mobile terminal performs the handover, the processing node, the first arc
  • the difference between the first access router to which the access point is connected and the second access router to which the second access point is connected is the difference between the second QoS and the second QoS. It is a preferable aspect of the present invention to delete the QoS path between the second access router and the first access point to which the mobile terminal before the handover was connected. With this configuration, unnecessary QoS paths can be deleted, and wasted bandwidth consumption can be reduced.
  • a plurality of access routers each constituting a subnet are connected via a communication network, and an access point forming a unique communicable area is provided for each of the plurality of access routers.
  • the communication system is configured to communicate with the access router to which the access point is connected through wireless communication with the access point within the communicable area in the communication system connected to at least one of the access routers.
  • a processing node comprising signaling generating means for generating the signaling and transmission means for connecting the generated second signaling to the processing node and sending it to the path.
  • the QoS path reconfigured before the handover becomes the optimum QoS path after the handover as much as possible, and the load of the reroute configuration of the QoS path performed after the handover can be reduced.
  • the QoS path setting section performed immediately after handover is shortened, and the QoS interruption time can be minimized.
  • the second access router and the second access point to which the second access point is connected from a terminal of a communication partner of the mobile terminal with the predetermined QoS path strength Passing through the first access router to which one access point is connected is a preferred aspect of the present invention.
  • the QoS path reconfigured before handover can be the optimal QoS path after handover as much as possible.
  • the first signaling includes information on the QoS path before the handover.
  • the QoS path can be reconfigured before handover.
  • the information of the QoS path before the handover is session identification information and flow identification information.
  • the QoS path can be reconfigured before the handover.
  • the predetermined QoS path is configured, and after the mobile terminal performs the handover, the second access point is connected in the predetermined QoS path.
  • the apparatus further comprises path erasure means for erasing a QoS path between the second access router and the first access point to which the mobile terminal before the handover was connected.
  • the high-speed QoS handover method of the present invention and the processing node used in the method have the above-described configuration, and the QoS path reconfigured before the handover becomes the optimum QoS path after the handover as much as possible.
  • the load on the re-route configuration of the QoS path to be performed can be reduced.
  • the QoS path setting section performed immediately after handover is shortened, and the QoS interruption time can be minimized.
  • FIG. 1 is a configuration diagram showing a configuration of a communication network according to first and second embodiments of the present invention.
  • FIG. 2 is a sequence chart showing a signaling sequence in the fast QoS handover method according to the first embodiment of the present invention.
  • FIG. 3 is a configuration diagram showing a configuration of a processing node according to the first embodiment of the present invention.
  • FIG. 4 is a sequence chart showing a signaling sequence in the fast QoS handover method according to the second embodiment of the present invention.
  • FIG. 5 is a configuration diagram showing the configuration of a processing node according to the second embodiment of the present invention.
  • FIG. 6 Diagram showing a conventional communication network
  • FIG.7 Diagram showing QoS path immediately after handover of a mobile terminal in a conventional communication network
  • FIG. 1 is a configuration diagram showing a configuration of a communication network according to the first embodiment of the present invention.
  • FIG. 2 is a sequence chart showing a signaling sequence in the fast QoS handover method according to the first embodiment of the present invention.
  • FIG. 3 is a block diagram showing the configuration of the processing node according to the first embodiment of the present invention.
  • the communication network is located between the MN (mobile terminal) 10, the communication partner CN 60 of MN10, and between MN10 and CN60, and relays signaling (also called signaling messages) and data packets between MN10 and CN60 QNE11, 12, 13, 14, AP (Access Point) 22, 23, 23, which is connected to PAR21 and NA R31, PAR21 and NAR31, which are access routers constituting each subnet 20, 30 and forms a unique communicable area It consists of 32 and 33.
  • the configuration of the communication network here is merely an example, and the present invention is not limited to this.
  • the MN 10 is currently in the subnet 20, is connected to the AP 22 wirelessly, and communicates with the CN 60 through a route (QoS path) 24.
  • the MN 10 communicates with the CN 60 through the AP 22, PAR 21, QNE 11, QNE 12, and QNE 13 on the QoS path 24.
  • NAR 31 belonging to subnet 30 is designated as a processing node that performs processing associated with QoS path change according to the first embodiment of the present invention.
  • PAR21 belonging to subnet 20 is specified as a processing node will be described.
  • the processing node is not limited to NAR31 or PAR21, but may be another QNE (proxy).
  • the MN 10 moves from the subnet 20 to the subnet 30 (handover), the MN 10 makes a route (QoS path) via the PAR21 to which the NAR31 and the AP22 are connected from the CN60 to the NAR31 before the handover 64 (
  • This signaling includes QoS path information such as the session ID and flow ID of the current QoS path 24! /.
  • QoS path information such as the session ID and flow ID of the current QoS path 24! /.
  • Y that is the session ID of QoS path 24
  • X that is the flow ID are included in the signaling.
  • the session ID of the new route (QoS path) 34 after handover of the MN 10 is Y and the flow ID is Z. As described above, the session ID remains the same even when the MN 10 moves.
  • the NAR 31 Upon receiving the signaling, the NAR 31 starts two processes.
  • the first process is a process for configuring a QoS path toward NAR3 1 force CN60.
  • the NAR 31 sends signaling for configuring the QoS path (setting the QoS state) toward the CN 60.
  • a new QoS path state is set based on the transmitted signaling, and a QoS path (one path 64) is set between CN60 and NAR31. Part of the QoS path).
  • the configured QoS path is the optimal path between NAR31 and CN60.
  • the second process is a process for configuring a temporary QoS path (QoS path to AP22) from NAR31 to PAR21.
  • NAR31 sends signaling to PAR21 to make temporary QoS path configuration (QoS state setting).
  • the state of the temporary QoS path is set by the transmitted signaling, and a temporary QoS path (part of the route 64) is configured between the AP 22 and the NAR 31.
  • the configured temporary QoS path is deleted by NAR31 or PAR21 when handover of MN10 is completed. This prevents unnecessary bandwidth consumption due to unnecessary QoS paths.
  • the signaling sequence in the above-described processing will be described with reference to FIG.
  • a QoS path 24 (old QoS path) has already been configured between the MN 10 and the CN 60. From this state, when the MN 10 decides to perform a handover, the MN 10 transmits signaling including a session ID and a flow ID to the NAR 31 (step S201). Note that the signaling to be transmitted may include information requesting to become a branch point between the re-routed QoS path 64 and the new QoS path 34 after the handover of the MN 10.
  • NAR31 Upon receiving the signaling from MN10, NAR31 sends signaling for temporary QoS path configuration (QoS state setting) from NAR31 to AP22 to PAR21 (step S202), and from NAR31 to CN60 Signaling for QoS path configuration (QoS state setting) is sent to CN 60 (step S 203).
  • the state setting of the re-routed QoS path 64 is performed by these signaling, and the QoS path 64 is configured between the CN 60 and the AP 22.
  • the temporary QoS path to the NAR3 1 AP22 is deleted, and a new QoS path 34 is formed between the CN60 and the AP32.
  • the QoS path after the handover of the MN 10 becomes an optimum QoS path as much as possible, and the load of the re-route configuration of the QoS path performed after the handover can be reduced.
  • the QoS path setting interval performed immediately after the handover is PAR2r -NAR31 'AP32'- ⁇ 1 ( ⁇ as shown in Fig. 7, whereas in the first embodiment of the present invention, it is shown in Fig. 1. As shown in the figure, it becomes shorter as NAR31—AP32—MN 10. Therefore, the time required for QoS path configuration is shortened and the QoS interruption time can be shortened, and the generated QoS path passes through both PAR21 and NAR31. Therefore, it is also useful in the so-called “ping-pong phenomenon” in which MN10 moves back and forth between PAR21 and NAR31.
  • the NAR 31 belonging to the subnet 30 after the handover of the MN 10 is taken as an example of the processing node.
  • the NAR 31 includes a receiving unit 301, a transmitting unit 302, a signaling generating unit 303, a path erasing unit 304, and a storage unit 305.
  • the receiving unit 301 receives signaling for configuring the QoS path 64 from the MN 10 described above, packets exchanged between the CN 60 and the MN 10, and the like.
  • the transmission unit 302 transmits signaling for configuring the QoS path 64 generated by the signaling generation unit 303 described later, a packet exchanged between the CN 60 and the MN 10, and the like.
  • the signaling generation means 303 is based on the QoS path between the CN 60 and the NAR 31, and between the NAR 31 and the AP 22. Signaling to construct QoS paths between Are generated respectively.
  • the path erasure unit 304 erases a temporary QoS path from NAR 31 to AP 22 when the MN 10 completes the handover after the QoS path 64 is configured between the CN 60 and the AP 22. This temporary QoS path deletion may be performed by PAR21 or other devices.
  • the storage unit 305 stores information such as a control program for controlling the operation of the NAR 31 and data generated when the NAR 31 performs processing.
  • FIG. 4 is a sequence chart showing a signaling sequence in the fast QoS handover method according to the second embodiment of the present invention.
  • FIG. 5 is a configuration diagram showing a configuration of a processing node according to the second embodiment of the present invention.
  • a route (old QoS path) 24 is configured between the MN 10 and the CN 60 before handover.
  • the MN 10 When the MN 10 decides to perform handover from this state, the MN 10 transmits signaling (including a session ID, a flow ID, etc.) to the PAR 21 (step S401). Then, the PAR 21 that has received the signaling transmits signaling for setting the QoS state to the NAR 31 (step S402). The NA R31 that has received the signaling transmits the QoS state setting signaling to the CN 60 in the same manner (step S403). As a result, QNE14, QNE12, and QNE13 located between NAR31 and CN60 perform a new QoS path state setting based on the transmitted signaling, and the rerouted QoS path 64 is set between CN60 and AP22. Configured between.
  • the temporary QoS path from the NAR 31 to the AP 22 is deleted, and a new QoS path 34 is configured between the CN 60 and the AP 32.
  • the QoS path after handover of MN10 is The QoS path is optimized as much as possible, and the load on the re-route configuration of the QoS path performed after handover can be reduced.
  • the QoS path setting interval performed immediately after handover is conventionally PAR2r-NAR31'-AP32'- ⁇ 1 ( ⁇ as shown in FIG. 7, whereas in the second embodiment of the present invention, the path shown in FIG. As shown in Fig.
  • the time required for QoS path configuration is shortened and the QoS interruption time can be shortened, and the generated QoS path power PAR21 and NAR31 are both shortened. This is also useful for the so-called “ping-pong phenomenon” in which MN10 moves back and forth between PAR21 and NAR31.
  • the PAR 21 includes a receiving unit 501, a transmitting unit 502, a signaling generating unit 503, a path erasing unit 504, and a storage unit 505.
  • the receiving unit 501 receives signaling for configuring the QoS path 64 from the MN 10 described above, packets exchanged between the CN 60 and the MN 10, and the like.
  • the transmitting unit 502 transmits signaling for configuring the QoS path 64 generated by the signaling generating unit 503 described later, a packet exchanged between the CN 60 and the MN 10, and the like.
  • the signaling generation unit 503 Based on the signaling for configuring the QoS path 64 transmitted from the MN 10 received by the receiving unit 501, the signaling generation unit 503 performs signaling for configuring the QoS path between the CN 60 and the AP 22. Is generated. Then, the NAR 31 that receives the generated signaling generates signaling for configuring a QoS path between the CN 60 and the NAR 31 itself based on the received signaling, and transmits the generated signaling to the CN 60.
  • the node elimination means 504 creates a temporary QoS path from NAR31 to AP22 when MN10 starts and completes handover after QoS path 64 is configured between CN60 and AP22. It is to be erased. Note that this temporary QoS path deletion may be performed by the NAR 31 or another device.
  • the storage means 505 stores a control program for controlling the operation of the PAR21 and information such as data generated when the PAR21 performs processing. It is.
  • each functional block used in the description of the above embodiment is typically realized as an LSI which is an integrated circuit. These may be individually made into one chip, or may be made into one chip so as to include a part or all of them.
  • IC system LSI
  • super LSI super LSI
  • ultra LSI depending on the difference in power integration of LSI.
  • the method of circuit integration is not limited to LSI, and may be realized by a dedicated circuit or a general-purpose processor.
  • An FPGA Field Programmable Gate Array
  • a reconfigurable processor that can reconfigure the connection and settings of the circuit cells inside the LSI may be used.
  • integrated circuit technology that replaces LSI emerges as a result of advances in semiconductor technology or other technologies derived from it, it is natural that the integration of functional blocks may be performed using this technology. For example, biotechnology can be applied.
  • the high-speed QoS handover method according to the present invention and the processing node used in the method are such that the QoS path reconfigured before the handover becomes the optimum QoS path after the handover as much as possible.
  • the load on the route configuration can be reduced, and the QoS path setup section to be performed immediately after handover is shortened to minimize the QoS interruption time. Therefore, the high-speed Qo S of mobile terminals (mopile nodes) that perform wireless communication can be minimized. It can be used for the handover method and processing nodes used in the method, and in particular, high-speed QoS hand-over in a mopile node that performs wireless communication using the Mobile Internet Protocol version 6 (Mobile IPv6) protocol, which is the next-generation Internet protocol. It is useful for the method and the processing nodes used in the method.
  • Mobile IPv6 Mobile Internet Protocol version 6

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

Abstract

L'invention concerne un procédé de transmission QoS à grande vitesse, permettant à un trajet QoS reconstitué avant une transmission de devenir le trajet QoS optimal autant que faire se peut après ladite transmission, de façon à pouvoir réduire la charge imposée à la constitution d’un nouvel itinéraire du trajet QoS après ladite transmission, et permettant de raccourcir la section de réglage de trajet QoS juste après ladite transmission, de façon à minimiser la période d’interruption QoS, et une technique permettant de fournir un nœud de traitement à utiliser dans ce procédé. Cette technique implique une phase, dans laquelle un terminal mobile (10) envoie une première signalisation permettant de constituer un trajet QoS prédéterminé, vers le nœud de traitement pendant une opération prédéterminée afin de réduire la charge imposée à l’opération de changement du QoS après ladite transmission, et une phase, dans laquelle le noeud de traitement permettant de recevoir la première signalisation produit, sur la base de la première signalisation reçue, une seconde signalisation permettant de définir le QoS du trajet QoS prédéterminé et envoie la seconde signalisation générée à un trajet connecté avec lui-même.
PCT/JP2006/319383 2005-09-29 2006-09-28 PROCÉDÉ DE TRANSMISSION QoS À GRANDE VITESSE, ET NOEUD DE TRAITEMENT UTILISÉ DANS LE PROCÉDÉ WO2007037346A1 (fr)

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JP2005-285028 2005-09-29

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Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20040008689A1 (en) * 2002-06-20 2004-01-15 Cedric Westphal QoS signaling for mobile IP

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20040008689A1 (en) * 2002-06-20 2004-01-15 Cedric Westphal QoS signaling for mobile IP

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
WESTPHAL C. AND CHASKAR H.: "QoS Signaling Framework for Mobile IP, draft-westphal-nsis-qos-mobileip-00.txt", 24 June 2002 (2002-06-24), XP015005718 *

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