WO2008079063A1 - Passation base sur un service en combinaison avec ms et activation de contexte pdp auxiliaire initié par réseau - Google Patents

Passation base sur un service en combinaison avec ms et activation de contexte pdp auxiliaire initié par réseau Download PDF

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Publication number
WO2008079063A1
WO2008079063A1 PCT/SE2006/001503 SE2006001503W WO2008079063A1 WO 2008079063 A1 WO2008079063 A1 WO 2008079063A1 SE 2006001503 W SE2006001503 W SE 2006001503W WO 2008079063 A1 WO2008079063 A1 WO 2008079063A1
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WO
WIPO (PCT)
Prior art keywords
network
mobile station
infrastructure
access technology
context
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Application number
PCT/SE2006/001503
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English (en)
Inventor
Lasse Olsson
Original Assignee
Telefonaktiebolaget Lm Ericsson (Publ)
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Priority to PCT/SE2006/001503 priority Critical patent/WO2008079063A1/fr
Publication of WO2008079063A1 publication Critical patent/WO2008079063A1/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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/14—Reselecting a network or an air interface

Definitions

  • the present invention relates to communication resource optimization and in particular to a method, device and system for changing connection method between user equipment and infrastructure devices.
  • the users of services provided for instance on the Internet are increasingly demanding access to the services while on the move, i.e. using mobile equipment and being always connected to networks providing services of interest.
  • high speed wireless communication interfaces allows the users to access at least some of these services.
  • the users also have demands on the accessibility to these services by wanting seamless handover when roaming from one location to another.
  • the increasing number of users in the wireless networks also sets up demands on infrastructure design and availability. It is difficult to dynamically adjust the networks to changing demands over time. The demands may fluctuate quite large over a short period of time depending on geographical, demographical and social configuration. During large events, such as during concerts, the usage of the wireless communication networks will increase in a local geographical area. It is therefore of interest to provide as flexible and optimized networks as is possible in order to provide users with suitable accessibility and at a reasonable cost for the users and the operators of the networks.
  • the problem today is that the service has to adapt to which AT (Access Technology) the UE is connected to at the moment and the infrastructure has to choose between not to setup the service (which could be very annoying) OR set it up with a lower bandwidth then the service actually would require.
  • AT Access Technology
  • a first is a method for optimizing communication mode in a wireless communication network, comprising the steps of:
  • - sending a trigger from the infrastructure device to the mobile station for forcing the mobile station to request a change of access technology e.g. through a request for creation of a secondary context with the infrastructure network or a GGSN initiated PDP context update.
  • the connection configuration may comprise at least one of access technology and quality of service.
  • the access technology may comprise one of GSM, GPRS, EDGE, UMTS, WCDMA, WLAN, and WPAN.
  • WLAN comprise at least one of solutions based on one of IEEE 802.11, IEEE 802.15, or IEEE 802.16 series of standard protocols, HiperLAN, Mobile@Home, MowLAN, WiMAX, and WPAN comprise Bluetooth.
  • the trigger may comprise using a handover procedure in the infrastructure and including extension information in control messages of the handover procedure.
  • the method may further comprise the steps of: - determining that an access technology change is required;
  • the step of sending control command may be performed in one of SGSN, GGSN, EPC or AF.
  • an infrastructure device for operation in a wireless communication infrastructure network, comprising means for initiating a secondary connection context of a mobile station connected to infrastructure network, wherein the secondary context involve a different type of access technology.
  • a mobile station is provided in a wireless communication network, comprising
  • the processing device comprise an instruction set for initiating a secondary connection context involving an access technology different from a first connection context established earlier between the mobile station and an infrastructure device.
  • the processing device may comprise an instruction set for receiving a control command from the infrastructure device indicating that the mobile station should initiate the secondary connection context through a handover procedure.
  • a computer program for facilitating optimization of communication between a mobile station and an infrastructure device in a wireless communication network, comprising an instruction set for initiating establishment of a secondary connection context between the mobile station and the infrastructure device.
  • the computer program may further comprise instruction sets for:
  • an infrastructure wireless communications network comprising:
  • the serving node and - a policy rules function node, PCRF; wherein at least one of the serving node and the policy rules function are arranged to initiate a secondary connection context of a mobile station connected to the infrastructure network through the RAN, wherein the secondary context involve a change of access technology for the mobile station to the infrastructure network by sending a trigger command to the radio access network.
  • This invention will also address the possibility for additional operator equipment/systems i.e. IMS to change the access type, on already existing PDP contexts, depending on the service requested using the standardized Update PDP Context procedure.
  • the present invention will give the end user a better experience and the operator of the network a more flexible core network which automatically decides which type of network, network service or type of access technology best suits the desired service in order to save radio resources.
  • Fig. 1 illustrates a network according to the present invention
  • Fig. 2 illustrates schematically in a signaling diagram control traffic in one embodiment of the present invention.
  • Fig. 3 illustrates schematically in a signaling diagram control traffic in another embodiment of the present invention.
  • Figs 4a to d illustrate schematically different embodiments in more detail as signaling diagrams of the present invention
  • Fig. 5 illustrates an infrastructure device according to the present invention
  • Fig. 6 illustrates a mobile station according to the present invention.
  • this invention is intended to address the problems with services that demand a high bandwidth, traffic class streaming and conversational, combined with possibilities to save bandwidth on services that don't, traffic class interactive.
  • FIG. 1 reference numeral 100 generally denote a network according to one exemplifying embodiment of the present invention.
  • the infrastructure part of the network 100 comprises a radio access network with (RAN) at least one access gateway, e.g.
  • RAN radio access network with
  • a BSC 5 Base Station Controller
  • RNC Radio Network Controller
  • UE User Equipment
  • core network 116 comprising at least one support node 102, 104.
  • the access gateways may be connected to a service node via different interfaces (a Gb interface 108 for the BSC and an Iu interface 109 for the RNC), in case of
  • this service node comprises a SGSN (Service GPRS Support Node) 102 connected to an infrastructure gateway 104, in this example a GGSN (Gateway GPRS Support Node).
  • the service node 102 and infrastructure gateway node 104 is connected to each other in a control network 116, for instance on a Gn interface 110.
  • Other access gateways may be connected directly or indirectly to the control network
  • the user of any public wireless communication network 100 often belongs to a service provider (e.g. an operator).
  • the service provider handles many aspects of the relation
  • the service provider authenticates the user and guarantees payment streams for different types of services provided via the network, e.g. provided by the service provider himself or provided by a third party.
  • the service provider handles what type of services that is available within a subscription, for instance quality of service, type of access, priority and so on. This can be
  • the EPC is connected to the GGSN 104 via a Gx+ Interface over which control information is transferred.
  • Internet traffic may be relayed over a Gi interface 113 to an Internet Service Provider (ISP) 107.
  • ISP Internet Service Provider
  • the EPC may in turn be connected to an AF (Application Function) 106 via an Rx
  • a user connects to the network 100 through a user equipment (UE or MS) 130 by normal connection establishment routines, for instance by establishing a PDP (Packet Data Protocol) context between the UE 130 and the 35 infrastructure network 100.
  • the network for instance in the EPC, GGSN or AF, may evaluate the established connection by type and quality of service (QoS) and determine if the connection has a suitable configuration. If the connection is not suitable the network may initiate a change of configuration of the connection by sending appropriate control information to the RAN 101 , 103. This network initiated access change will now be discussed in more detail.
  • One example is:
  • IMS node PDF Policy Decision Function
  • P-CSCF Proxy Call Session Control Function
  • the present invention may address all sorts of access types, for instance GSM, EDGE, GPRS, UMTS, WCDMA, WLAN (Wireless Local Area Network) such as IEEE 802.11 (including WiFi), IEEE 802.15, or IEEE 802.16 series of protocols, HiperLAN, Mobile@Home, MowLAN, WiMAX, or WPAN (Wireless Personal Area Network) such as Bluetooth, or any other wireless local area network communication method, that may be connected to the GGSN or it's successor in Long Term Evolution (LTE) / System Architecture Evolution (SAE).
  • the WLAN or WPAN connections may for instance be connected to the control network using an xDSL (Digital Subscriber Line, x can be substituted for relevant DSL type association, e.g.
  • xDSL Digital Subscriber Line, x can be substituted for relevant DSL type association, e.g.
  • a for Asynchronous, i.e. ADSL), ISDN (Integrated Services Digital Network), Ethernet, or ATM (Asynchronous Transfer Mode) connection Using the solution according to the present invention the system initiates a transfer from one access technology to one other of the available technologies within range of the UE.
  • Fig. 2 where in an example related to a WCDMA network solution is shown as a sequence diagram.
  • An activate secondary PDP context request 202 is sent from the mobile station (MS) to a SGSN in the network if it is determined that another connection type and service would be more suitable than what is the case for an already established PDP context. It is assumed that the MS has already established this first PDP context through some normal establishment routine.
  • the trigger for requesting the second PDP context may come from either the MS itself or from the network, for instance a trigger 201 may be sent from the GGSN but also from the SGSN, EPC or AF depending on type of service requested and/or established service agreement with the operator to which the user has a business relation to with respect to telecommunications. It should be noted the trigger 201 is used for network initiated activation of the secondary PDP context and may be removed for a situation where the UE initiates the activation.
  • the SGSN is arranged to send a create PDP context request 203 to a GGSN. This in turn will generate control traffic to the EPC and AF and back to the GGSN again (204-207).
  • the GGSN will send a create PDP context response 208 to the SGSN.
  • the SGSN is arranged to decide if an IRAT change should be indicated to RAN (Radio Access Network) using IE Service Handover; if included, the Service Handover IE tells if the requested RAB:
  • GSM Global System for Mobile communications
  • NAS Network Access Server
  • the requested RAB should be handed over to GSM as soon as possible although the final decision whether to perform a handover to GSM is still made in the UTRAN (Universal Terrestrial Radio Access Network).
  • UTRAN Universal Terrestrial Radio Access Network
  • the requested RAB should remain in UMTS as long as possible although the final decision whether to perform a handover to GSM is still made in the UTRAN.
  • the UTRAN shall not initiate handover to GSM for the UE unless the RAB with this indication have first been released with the normal release procedures.
  • the value of the Service Handover IE is valid throughout the lifetime of the RAB or until changed by a RAB modification.
  • the Service Handover IE shall only influence decisions made regarding UTRAN-initiated inter-system handovers. ⁇
  • the RAB assignment control traffic is transferred between the SGSN and RNC (209-210).
  • the SGSN will send an activate secondary PDP context accept message 211 to the MS.
  • Fig. 3 illustrates an embodiment of the present invention in a GSM network and using a Create BSS PFC Request for changing AT.
  • the SGSN may include a Service UTRAN CCO (Cell Change Order) information element in the PDU (relevant if the network initiated cell change order to UTRAN or the PS handover to UTRAN procedures are used). If this information element is received in both the DL-UNITDATA PDU and the CREATE-BSS-PFC PDU (or the PS-HANDOVER- REQUEST PDU), the information element received in the DL-UNITDATA PDU shall take precedence.
  • CCO Cell Change Order
  • the Service UTRAN CCO (Cell Change Order) information element indicates information for Network initiated Cell Change Order to UTRAN or for PS Handover to UTRAN, relevant if at least one of the procedures is used, an example of this IE is shown in tables 1 and 2 below:
  • An activate secondary PDP context request 302 is sent from the mobile station (MS) to a SGSN in the network if it is determined that another connection type and service would be more suitable than what is the case for an already established PDP context. It is assumed that the MS has already established this first PDP context through some normal establishment routine.
  • the trigger for requesting the second PDP context may come from either the MS itself or from the network, for instance a trigger 301 may be sent from the GGSN but also from the SGSN, EPC or AF depending on type of service requested and/or established service agreement with the operator to which the user has a business relation to with respect telecommunications.
  • the trigger 301 is used for network initiated activation of the secondary PDP context and may be removed for a situation where the UE initiates the activation.
  • the SGSN is arranged to send a create PDP context request 303 to a GGSN. This in turn will generate control traffic to the EPC and AF and back to the GGSN again (304-307).
  • the GGSN will send a create PDP context response 308 to the SGSN.
  • a create BSS PFC request 309 is sent to the BSC from the SGSN and the BSC sends back a create BSS PFC acknowledgment 310.
  • the SGSN is arranged to decide if an IRAT change should be indicated to RAN (Radio Access Network) using IE Service UTRAN CCO.
  • the SGSN will send an activate secondary PDP context accept 311 to the MS.
  • Figs 4a to 4d shows detailed examples of control traffic concerned for this type of access technology optimization solution in two different network situations.
  • Fig. 4a illustrates a Inter RAT/mode UTRAN/GERAN Iu mode to GERAN A/Gb mode PS handover during the preparation phase with the different network components and their inter relation in the process. 1. A handover decision has been taken (in the MS or at some other location in the network)
  • a Relocation is required and control traffic for this is sent from a source RNC/BSS to a SGSN.
  • the SGSN sends a PS handover request to a target BSS (i.e. possibly a new BSS).
  • the target BSS creates a target BSS to Source BSS transparent container.
  • the target BSS sends a PS handover request acknowledgement.
  • Fig. 4b illustrates the same handover as for Fig. 4a during the execution phase of the handover.
  • IP packets are sent from the GGSN to the SGSN which forwards this to a source RNC/BSS in turn possibly forwarding these to the MS.
  • the SGSN sends a relocation command to the source RNC/BSS.
  • the source RNC/BSS may, based on QoS, send a forward GTP PDUs command to the SGSN.
  • the SGSN forwards data to the target BSS which forwards data to the MS.
  • the source RNC/BSS sends a handover from UTRAN command (or handover from GERAN Iu command) to the MS.
  • the source RNC/BSS sends a forward SRNS context command to the SGSN.
  • the MS sends an XID response to the target BSS. (7a sending of uplink data possible (LLC ADM only) - XID response). IP packets to target BSS from the
  • GGSN to the SGSN and further to the target BSS and further to the MS.
  • the target BSS sends a PS handover complete command to the SGSN.
  • SABM-US exchange ABSM establishment and XID negotiation between the SGSN and MS.
  • Iu release command is sent from the SGSN to the source RNC/BSS and Iu release complete command is sent to the SGSN from the source RNC/BSS.
  • RAU procedure may be executed by a RAU request command from the MS to the SGSN 13.
  • the SGSN sends a RAU accept to the MS.
  • the MS responds with a RAU complete command.
  • Fig. 4c illustrates an Inter SGSN GERAN A/Gb mode to UTRAN/GERAN Iu mode handover during the preparation phase with the different network components and their inter relation in the process.
  • a source BSS sends a PS handover required command to a 2G SGSN.
  • the SGSN forwards a relocation request to 3 SGSN in the network.
  • the 3G SGSN sends a relocation request to a target RNC/BSS.
  • the target RNC/BSS sends a relocation request acknowledgement to the 3G SGSN.
  • the 3G SGSN forwards a relocation response to the 2G SGSN.
  • Fig. 4d illustrates the execution phase of the network situation from Fig. 4c.
  • IP packets are sent to "old" 2G SGSN from GGSN and forwarded further to an MS via a source BSS.
  • 2G SGSN relays N-PDUs to target 3G SGSN.
  • 3G SGSN relays N-PDUs to target RNC/BSS
  • 2G SGSN sends a PS handover required acknowledgment; 4a 2G SGSN sends a forward SRNS context command to the 3G SGSN; the 3G SGSN sends a forward SRNS context acknowledgment to the 2G SGSN; The 3G SGSN sends a forward SRNS context command to the target RNC/BSS.
  • the source BSS sends a PS handover command to the MS.
  • the target RNC/BSS sends a relocation detect command to the 3G SGSN.
  • MS sends a handover to UTRAN complete command to the target RNC/BSS sends a Radio Bearer reconfiguration complete command (for GERAN Iu).
  • the target RNC/BSS sends a relocation complete command to the 3G SGSN.
  • the 3G SGSN sends a forward relocation complete command to the 2G SGSN which sends a forward relocation complete acknowledgment.
  • the 3G SGSN sends an update context request to the GGSN.
  • the GGSN sends an update context response. Sending of uplink data possible; IP packets to the 3G SGSN and these will be forwarded to the target RNC/BSS and further to the MS.
  • BSS packet flow procedures are performed between source BSS and 2G SGSN.
  • the MS sends a RAU request to the 3G SGSN.
  • Security functions may be performed between MS, 3G SGSN, and HLR of the user.
  • the 3G SGSN sends an update location command to the HLR.
  • the HLR in turn sends a cancel location command to the 2G SGSN.
  • the 2G SGSN responds with a cancel location acknowledgment.
  • HLR sends a insert subscriber data command to the 3G SGSN.
  • the 3G SGSN sends an insert subscriber data acknowledgment to the HLR.
  • the HLR sends an update location acknowledgment to the 3G SGSN.
  • the 3G SGSN sends a RAU accept command to the MS. 22.
  • the MS responds with a RAU complete command to the 3G SGSN.
  • FIG. 5 illustrates in a schematic block diagram an infrastructure node (e.g. a support node for instance a GGSN or SGSN) according to the present invention, wherein a processing unit 501 handles communication data and communication control information.
  • the infrastructure node 500 further comprises a volatile (e.g. RAM) 502 and/or non volatile memory (e.g. a hard disk or flash disk) 503, and an interface unit 504.
  • the infrastructure node 500 may further comprise a downstream communication unit 505 and an upstream communication unit 506, each with a respective connecting interface. All units in the infrastructure node can communicate with each other directly or indirectly through the processing unit 501.
  • Software for handling communication to and from the mobile units attached to the network is at least partly executed in this node and may be stored in the node as well; however, the software may also be dynamically loaded upon start of the node or at a later stage during for instance a service interval.
  • the software can be implemented as a computer program product and distributed and/or stored on a removable computer readable media, e.g. diskette, CD (Compact Disk), DVD (Digital Video Disk), flash or similar removable memory media (e.g.
  • USB Universal Serial Bus
  • removable memory media magnetic tape media, optical storage media, magneto-optical media, bubble memory, or distributed as a propagated signal via a network (e.g. Ethernet, ATM, ISDN, PSTN, X.25, Internet, Local Area Network (LAN), or similar networks capable of transporting data packets to the infrastructure node).
  • a network e.g. Ethernet, ATM, ISDN, PSTN, X.25, Internet, Local Area Network (LAN), or similar networks capable of transporting data packets to the infrastructure node).
  • Fig. 5 illustrates in a schematic block diagram a mobile station 500 according to the present invention, wherein a processing unit 501 handles user commands, communication data and communication control information.
  • the infrastructure node 500 may further comprise a volatile (e.g. RAM) 502 and/or non volatile memory (e.g. a hard disk or flash disk) 503, and a user interface unit 504.
  • the infrastructure node 500 may further comprise at least one communication unit 505 and may further comprise a second communication unit 506, each with a respective connecting interface. All units in the infrastructure node can communicate with each other directly or indirectly through the processing unit 501.
  • the communication units may be implemented into the same hardware unit, for instance dual access technologies may be implemented into the same microelectronic device or it may be implemented into a device handling a soft radio application (i.e. where the radio coding is controlled to a large extent in software).

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

Abstract

La présente invention concerne un procédé, un réseau, des dispositifs et des ensembles d'instructions destinés à optimiser le type de technologie d'accès pour des postes mobiles (130) dans un réseau de communication sans fil (100). Les dispositifs de réseau (102, 104, 105, 106, 500) sont agencés de façon à initier un contexte de protocole de paquets de données (PDP) auxiliaire s'il est déterminé qu'une autre technologie d'accès serait plus appropriée pour un contexte PDP particulier, c'est-à-dire pour une application particulière. Des dispositifs d'infrastructure à n'importe quel niveau approprié peuvent être impliqués dans l'envoi d'un signal de commande à un réseau d'accès radio pour déclencher une procédure de passation à une autre technologie d'accès.
PCT/SE2006/001503 2006-12-22 2006-12-22 Passation base sur un service en combinaison avec ms et activation de contexte pdp auxiliaire initié par réseau WO2008079063A1 (fr)

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PCT/SE2006/001503 WO2008079063A1 (fr) 2006-12-22 2006-12-22 Passation base sur un service en combinaison avec ms et activation de contexte pdp auxiliaire initié par réseau

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PCT/SE2006/001503 WO2008079063A1 (fr) 2006-12-22 2006-12-22 Passation base sur un service en combinaison avec ms et activation de contexte pdp auxiliaire initié par réseau

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010088956A1 (fr) * 2009-02-05 2010-08-12 Nokia Siemens Networks Oy Procédé et dispositif de traitement de données dans un réseau de communication mobile
CN103188729A (zh) * 2011-12-31 2013-07-03 中兴通讯股份有限公司 业务均衡方法和装置

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EP1562396A2 (fr) * 2004-02-04 2005-08-10 Vodafone Group PLC Transfert d'appel dans un système de communication mobile entre des zones de couverture GSM et UMTS
WO2006055933A2 (fr) * 2004-11-18 2006-05-26 Azaire Networks Inc. Maintien de la coherence de connexions reseau au moyen d'un contexte pdp secondaire
WO2007080537A1 (fr) * 2006-01-13 2007-07-19 Nokia Corporation Optimisation d'utilisation de contexte de protocole de paquets de données

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EP1562396A2 (fr) * 2004-02-04 2005-08-10 Vodafone Group PLC Transfert d'appel dans un système de communication mobile entre des zones de couverture GSM et UMTS
WO2006055933A2 (fr) * 2004-11-18 2006-05-26 Azaire Networks Inc. Maintien de la coherence de connexions reseau au moyen d'un contexte pdp secondaire
WO2007080537A1 (fr) * 2006-01-13 2007-07-19 Nokia Corporation Optimisation d'utilisation de contexte de protocole de paquets de données

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010088956A1 (fr) * 2009-02-05 2010-08-12 Nokia Siemens Networks Oy Procédé et dispositif de traitement de données dans un réseau de communication mobile
US9357450B2 (en) 2009-02-05 2016-05-31 Nokia Solutions And Networks Oy Method and device for data processing in a mobile communication network
CN103188729A (zh) * 2011-12-31 2013-07-03 中兴通讯股份有限公司 业务均衡方法和装置
KR20140116452A (ko) * 2011-12-31 2014-10-02 지티이 코포레이션 서비스 균형 방법 및 장치
EP2800413A4 (fr) * 2011-12-31 2015-08-26 Zte Corp Procédé et appareil pour un équilibrage de services
KR101639498B1 (ko) * 2011-12-31 2016-07-13 지티이 코포레이션 서비스 균형 방법 및 장치

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