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WO2008028318A1 - Procédé d'établissement d'une communication - Google Patents

Procédé d'établissement d'une communication Download PDF

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Publication number
WO2008028318A1
WO2008028318A1 PCT/CN2006/002180 CN2006002180W WO2008028318A1 WO 2008028318 A1 WO2008028318 A1 WO 2008028318A1 CN 2006002180 W CN2006002180 W CN 2006002180W WO 2008028318 A1 WO2008028318 A1 WO 2008028318A1
Authority
WO
WIPO (PCT)
Prior art keywords
message
utran
setting
call
dedicated
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/CN2006/002180
Other languages
English (en)
Inventor
Michael Roberts
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.)
Huawei Technologies Co Ltd
Original Assignee
Huawei Technologies 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.)
Filing date
Publication date
Application filed by Huawei Technologies Co Ltd filed Critical Huawei Technologies Co Ltd
Priority to PCT/CN2006/002180 priority Critical patent/WO2008028318A1/fr
Publication of WO2008028318A1 publication Critical patent/WO2008028318A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/10—Connection setup
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/20—Manipulation of established connections
    • H04W76/27—Transitions between radio resource control [RRC] states
    • 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
    • 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
    • H04W92/10—Interfaces between hierarchically different network devices between terminal device and access point, i.e. wireless air interface

Definitions

  • the present invention relates in general to telecommunication techniques, and more particularly, to a method for setting up a call in a radio communication system like a Universal Mobile Telecommunications System (UMTS) from a CELL PCH state.
  • UMTS Universal Mobile Telecommunications System
  • Figure 1 illustrates a message flow for setting up a call in a UMTS in the prior art when a user equipment (UE) is called, which includes the following steps:
  • Step 101 the Universal Terrestrial Radio Access Network (UTRAN) of the UE sends a paging message to the UE on a Common Control Channel (CCCH) of the system.
  • UTRAN Universal Terrestrial Radio Access Network
  • CCCH Common Control Channel
  • the UE Upon receiving the paging message, the UE transfers from an IDLE state, a CELL_PCH state to a CELLJ 7 ACH state to decode a Fast Access Channel (FACH).
  • FACH Fast Access Channel
  • Step 102 the UE returns a CELL UPDATE message as a response to the received paging message to the UTRAN on a Random Access Channel (RACH) of the system.
  • RACH Random Access Channel
  • Step 103 the UTRAN then sends a CELL UPDATE CONFIRM message to the UE on a FACH, in which dedicated radio resources allocated to the UE are carried.
  • Step 104 the UE synchronizes to the dedicated radio resources received to establish a radio link so as to establish the Radio Resource Control (RRC) connection between the UE and the UTRAN.
  • RRC Radio Resource Control
  • a dedicated channel is established between the UE and the UTRAN. And after the dedicated channel is established, the UE transfers from the CELL_FACH state to the CELLJDCH state.
  • Step 105 the UE returns a CELL UDATE COMPLETE message to the UTRAN on the dedicated channel established between the UE and the UTRAN.
  • This CELL UDATE COMPLETE message indicates that the procedure of setting up a call for the UE is completed. And later on, the UE can communicate with the UTRAN through the dedicated channel established.
  • the call setup procedure firstly requires a paging to occur, and then the UE is required to respond to the paging and transfers to the CELLJ 7 ACH state, where it is required to decode a FACH channel. It is on this FACH channel that the message allocating the dedicated channel is sent, and this message is integrity protected. Since there are so many steps in the existing call setup procedure, much time is needed to set up a call.
  • the present invention provides methods for setting up a call from CELL PCH state.
  • the method of setting up a call includes: a UTRAN of a UE sending a call setup request, which carries dedicated radio resources allocated to the UE, to the UE on a CCCH; and upon receiving the call setup request, the UE synchronizing to the dedicated radio resources received to establish a dedicated channel between the UE and the UTRAN, in which communication between the UE and the UTRAN is conducted.
  • the method of setting up a call includes: at a UTRAN side of a UE, sending a call setup request, which carries dedicated radio resources allocated to the UE, to the UE on a CCCH; and sending a confirmation message to the UE upon receiving a response message from the UE; and at the UE side, synchronizing to the dedicated radio resources received to establish a dedicated channel between the UE and the UTRAN upon receiving the call setup request; returning a response message to the UTRAN confirming the reception of the dedicated radio resources allocated to the UE after the dedicated channel between the UE and the UTRAN is established; starting a timer at the time of sending the response message; if no confirmation message is received before the timer expires, releasing the dedicated channel established; otherwise, making a integrity test to the received confirmation message, if the integrity test is successful, continue communication with the UTRAN through the dedicated channel established; and if the integrity test is failed, releasing the dedicated channel established.
  • the call setup procedure is simplified and the time for setting up a call is greatly reduced. Moreover, since the UE defers the integrity protection procedure till the time point of receiving an integrity protected RRC message, by which the network can be checked. Thus, the security of the system can be guaranteed.
  • Figure 1 is a signaling flow chart for setting up a call in the prior art
  • Figure 2 is a signaling flow chart for setting up a call according to a first embodiment of the present invention
  • Figure 3 is a signaling flow chart for setting up a call according to a second embodiment of the present invention.
  • a first embodiment of the present invention provides a method for setting up a call in a UMTS system.
  • the message flow of this method is illustrated in Figure 2, which includes the following steps: Step 201: the UTRAN sends a call setup request to the UE on a CCCH, which carries the dedicated radio resources allocated to the UE.
  • the call setup request may also carry the radio network identities.
  • the radio network identities may include a Cell Radio Network Temporary Identity (C-RNTI) and a UTRAN Radio Network Temporary Identity (U-RNTI).
  • C-RNTI Cell Radio Network Temporary Identity
  • U-RNTI UTRAN Radio Network Temporary Identity
  • the call setup request refers to a paging message, which can be either a paging type 1 message or a paging type 2 message.
  • any other message sent on the CCCH can be considered as the call setup request to carry the dedicated radio resources allocated to the UE, without departing the spirit and the protection scope of the present invention.
  • the paging message Since a paging message can not carry the dedicated radio resources information according to the existing protocol specification, the paging message has to be extended in order to carry the dedicated radio resources allocated to the UE.
  • the dedicated radio resources allocated to the UE can be carried in an extended field or a reserved field of the paging message or any other message which is associated to the paging message sent to the UE.
  • Step 202 upon receiving the call setup request, the UE synchronizes to the dedicated radio resources received to establish a radio link, so as to establish an RRC connection between the UE and the UTRAN.
  • the UE can establish a dedicated channel between the UE and the UTRAN after receiving the paging message, and then transfers from any states such as an IDLE state, a CELLJPCH state or a URA_PCH state directly to a CELLJDCH state.
  • Step 203 the UE returns a response message, confirming the reception of the dedicated radio resources and radio network identities allocated to the UE, which indicates that the procedure of setting up a call for the UE is completed.
  • the response message may be the CELL UDATE COMPLETE message.
  • Step 203 does not limit the executing order of the above Step 202 and Step 203, that is, the Step 203 can be performed before the Step 202, or these two steps can be performed simultaneously.
  • the dedicated radio resources (and radio identity) allocated to the UE are carried in the call setup request, such as the paging message or any other message sent on the CCCH, rather than in the CELL UPDATE CONFIRM message sent on the FACH, and the UE can transfer directly from the idle state, the CELLJPCH state or the URA_PCH state to the CELLJDCH state, that is, there is no need for the UE transferring to the CELL_FACH state before the call is set up, so the call setup procedure is simplified, and the time for setting up a call is greatly reduced.
  • ciphering and integrity protection are used in the UMTS on dedicated channels, the system can protect itself from intrusion and eaves dropping.
  • the ciphering and integrity protection are not used on broadcast channels such as the CCCH or the shared channel.
  • the dedicated radio resources allocated to the UE are carried in the paging message or any other message sent on the CCCH, which is neither ciphered nor integrity protected, a security risk to the system will be caused, as it would be easy to "hi-jack" a UE, i.e. pretend to be the Public Land Mobile Networks (PLMNs) infrastructure and steal the UE from the system, which scenario is commonly known as the man in the middle scenario.
  • PLMNs Public Land Mobile Networks
  • a second embodiment of the present invention provides a method for setting up a call, which allows the UE to defer the integrity protection procedure till a point in time to be specified in the radio protocol specification.
  • the UE may check the network to ensure that it applies security mechanisms, and in the case the network doesn't comply, the UE will release the connections it has established to the network, assuming that it has been pirated. And in order to assure the continuity of the service, the UE then may re-establish a radio connection.
  • Figure 3 illustrate a message flow of a call setup procedure according to the. present embodiment. As shown in Figure 3, the method includes:
  • Step 301 the UTRAN of the UE sends a call setup request to the UE on a CCCH of the system, which carries the dedicated radio resources allocated to the UE.
  • the call setup request may refer to a paging message or any other message sent on the CCCH.
  • the paging message can either be a paging type 1 message or a paging type 2 message.
  • the paging message has to be extended by means of carrying the dedicated radio resources allocated to the UE in an extended field or a reserved field of the paging message.
  • Step 302 the UE synchronizes to the dedicated radio resources received to establish a radio link, in order to establish an RRC connection between the UE and the UTRAN.
  • the dedicated radio resources allocated to the UE are carried in the call setup request, such as the paging message or any other message sent on the CCCH
  • the UE can establish a dedicated channel between the UE and the UTRAN, and then transfers directly from any state such as an IDLE state, a CELLJPCH state or a URA_PCH state to a CELLJDCH state.
  • Step 303 the UE returns a response message, confirming the reception of the dedicated radio resources allocated to the UE.
  • this response message can be a CELL UPDATE COMPLETE message. It should be noted that the present embodiment does not limit the executing order of the above Step 302 and Step 303, that is, the Step 303 can be performed before the Step 302, or these two steps can be performed simultaneously.
  • Step 304 at the time of sending the response message, the UE starts a timer, which counts for the waiting time of receiving a confirmation message from the UTRAN.
  • the time length of the timer can be pre-configured.
  • Step 305 upon receiving the response message, the UTRAN sends a confirmation message on the established dedicated channel, which is integrity protected, to the UE.
  • Step 306 if the UE receives the confirmation message before the timer expires, proceeds to step 307; and otherwise, the UE releases the RRC connection established and transfer to the IDLE state.
  • Step 307 the UE make an integrity test to the received confirmation message, if the integrity test of this message is successful, the UE stops the timer, and continues communication with the UTRAN with the RRC connection established; and otherwise, the UE releases the RRC connection established and transfers to the IDLE state.
  • Figure 3 only illustrates a normal signaling procedure as that the UE receives the confirmation message before the timer expires and the integrity test to the received confirmation message is successful.
  • the signaling procedures in other cases, such as that no confirmation message is received before the timer is overtime or the integrity test of the confirmation message is failed, are not illustrated in Figure 3.
  • the confirmation message can be a new RRC message introduced in the protocol as a confirmation to the call setup request sent on the CCCH.
  • This new introduced RRC message is integrity protected as required in the presently requirements, and the checking of which is necessary to complete the procedure and acceptance of the call setup request sent on the CCCH.
  • the confirmation message can be any integrity protected RRC message sent next to the call setup request by the UTRAN to the UE after the establishment of the RRC connection.
  • the UE will releases the RRC connection and transfers to the IDLE state. In this way, the system would be protected from intrusion or eaves dropping. Thus, the security of the system would be guaranteed.
  • the UE In order to assure the continuity of the service, in the case that the dedicated channel is released, the UE should be allowed to re-establish an RRC connection later and thus remove the possibility for the UE to have a denial of service attack.
  • WCDMA Wideband Code Division Multiple Access
  • GSM Global System for Mobile communications

Landscapes

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

Abstract

L'invention concerne des procédés d'établissement d'une communication. Selon lesdits procédés, un réseau d'accès radio terrestre universel (UTRAN) d'un équipement utilisateur (UE) envoie, à un équipement utilisateur, une requête d'établissement de communication contenant des ressources radio spécifiques affectées à l'équipement utilisateur, sur un canal de commande commun (CCCH); et l'équipement utilisateur réalise une synchronisation avec les ressources radio spécifiques reçues afin d'établir un canal spécifique entre l'équipement utilisateur et le réseau d'accès radio terrestre universel, ledit canal servant à la communication entre l'équipement utilisateur et le réseau d'accès radio terrestre universel. Les procédés selon l'invention permettent de réduire la complexité et la durée d'une procédure d'établissement de communication. L'invention concerne également un procédé d'établissement de communication selon lequel l'équipement utilisateur peut différer la procédure de protection d'intégrité jusqu'au moment de la réception d'un message de confirmation pour vérifier si le réseau applique les mécanismes de sécurité. La sécurité du système est ainsi garantie.
PCT/CN2006/002180 2006-08-25 2006-08-25 Procédé d'établissement d'une communication Ceased WO2008028318A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/CN2006/002180 WO2008028318A1 (fr) 2006-08-25 2006-08-25 Procédé d'établissement d'une communication

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CN2006/002180 WO2008028318A1 (fr) 2006-08-25 2006-08-25 Procédé d'établissement d'une communication

Publications (1)

Publication Number Publication Date
WO2008028318A1 true WO2008028318A1 (fr) 2008-03-13

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Application Number Title Priority Date Filing Date
PCT/CN2006/002180 Ceased WO2008028318A1 (fr) 2006-08-25 2006-08-25 Procédé d'établissement d'une communication

Country Status (1)

Country Link
WO (1) WO2008028318A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010135474A1 (fr) * 2009-05-22 2010-11-25 Qualcomm Incorporated Annonce d'une session de communication dans un système de communications sans fil ô
EP2742621A4 (fr) * 2011-08-11 2015-05-20 Intel Corp Surdébit de signalisation réduit au cours de transitions entre des états rrc ("radio resource control")

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20020033320A (ko) * 2000-10-30 2002-05-06 구자홍 이동통신 시스템의 방송 메시지 전송 방법
US6526027B1 (en) * 1998-05-04 2003-02-25 Lg Information & Communications, Ltd. Broadcast short message service execution method in a mobile communication system
CN1602104A (zh) * 2003-09-22 2005-03-30 华为技术有限公司 一种实现快速呼叫建立的方法
CN1656844A (zh) * 2002-05-28 2005-08-17 诺基亚有限公司 用于多媒体广播/多播业务的数据传输

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6526027B1 (en) * 1998-05-04 2003-02-25 Lg Information & Communications, Ltd. Broadcast short message service execution method in a mobile communication system
KR20020033320A (ko) * 2000-10-30 2002-05-06 구자홍 이동통신 시스템의 방송 메시지 전송 방법
CN1656844A (zh) * 2002-05-28 2005-08-17 诺基亚有限公司 用于多媒体广播/多播业务的数据传输
CN1602104A (zh) * 2003-09-22 2005-03-30 华为技术有限公司 一种实现快速呼叫建立的方法

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010135474A1 (fr) * 2009-05-22 2010-11-25 Qualcomm Incorporated Annonce d'une session de communication dans un système de communications sans fil ô
EP2512200A3 (fr) * 2009-05-22 2012-12-19 Qualcomm Incorporated Annonce d'une session de communication dans un système de communication sans fil
US8797949B2 (en) 2009-05-22 2014-08-05 Qualcomm Incorporated Announcing a communication session within a wireless communications system
US9538544B2 (en) 2009-05-22 2017-01-03 Qualcomm Incorporated Announcing a communication session within a wireless communications system
EP2742621A4 (fr) * 2011-08-11 2015-05-20 Intel Corp Surdébit de signalisation réduit au cours de transitions entre des états rrc ("radio resource control")

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