WO2003061221A1 - Packet data serving node initiated updates for a mobile communication system - Google Patents

Packet data serving node initiated updates for a mobile communication system Download PDF

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Publication number
WO2003061221A1
WO2003061221A1 PCT/US2002/036461 US0236461W WO03061221A1 WO 2003061221 A1 WO2003061221 A1 WO 2003061221A1 US 0236461 W US0236461 W US 0236461W WO 03061221 A1 WO03061221 A1 WO 03061221A1
Authority
WO
WIPO (PCT)
Prior art keywords
packet data
session
pdsn
pcf
update
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/US2002/036461
Other languages
English (en)
French (fr)
Inventor
Shahab M. Sayeedi
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.)
Motorola Solutions Inc
Original Assignee
Motorola Inc
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 Motorola Inc filed Critical Motorola Inc
Priority to US10/497,869 priority Critical patent/US7043249B2/en
Priority to AU2002343696A priority patent/AU2002343696A1/en
Priority to KR10-2004-7010688A priority patent/KR20040071299A/ko
Priority to JP2003561184A priority patent/JP4464138B2/ja
Publication of WO2003061221A1 publication Critical patent/WO2003061221A1/en
Anticipated expiration legal-status Critical
Priority to US11/333,866 priority patent/US7539171B2/en
Ceased legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/20—Manipulation of established connections
    • H04W76/22—Manipulation of transport tunnels
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W48/00—Access restriction; Network selection; Access point selection
    • H04W48/08—Access restriction or access information delivery, e.g. discovery data delivery
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. Transmission Power Control [TPC] or power classes
    • H04W52/02—Power saving arrangements
    • H04W52/0203—Power saving arrangements in the radio access network or backbone network of wireless communication networks
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W80/00—Wireless network protocols or protocol adaptations to wireless operation
    • H04W80/08—Upper layer protocols
    • H04W80/10—Upper layer protocols adapted for application session management, e.g. SIP [Session Initiation Protocol]
    • 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
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/30—Connection release
    • H04W76/38—Connection release triggered by timers
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00—Reducing energy consumption in communication networks
    • Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks

Definitions

  • the present invention pertains to mobile communications and more particularly to the transfer of packet data parameters during a packet data communication session.
  • a mobile station couples through a radio access network (RAN) and a packet data serving node for access to packet data applications such as email, streaming video or web browsing packet data services.
  • a packet data inactivity timer is associated with the various packet data services, supported by the network.
  • the BS transitions the packet data service state from the active/connected state to a dormant state by releasing any traffic channels associated with the call.
  • the 3GPP2/TSG-S Standards Development Organization recently approved the use of a realm configured packet data session dormancy timer feature (RC-PDSDT) .
  • the packet data inactivity timer is configured by the type of packet application in use, the Quality of Service assigned to the service, user profile information, or other session related parameters.
  • the inactivity timer is stored on a AAA server (Authentication, Authorization and Accounting) in the packet data network.
  • AAA server Authentication, Authorization and Accounting
  • the base station controller needs the packet data service inactivity timer once the service type is determined.
  • the AAA server uses the information received during the packet data call setup to obtain the associated packet data inactivity timer from the AAAL database.
  • IOS IS-2001
  • the IOS standard currently does not support any procedure that can support this feature or any other feature which requires a transfer of packet data session parameters to the RAN.
  • the only current operation of the PDSN is to initiate a release of an active or dormant packet data service.
  • the PDSN initiates this release procedure by sending an update message to the packet control function (PCF) . This is the only use of the update message currently approved by the IOS standard.
  • PCF packet control function
  • a PDSN initiates a transfer of any packet data parameters required to support a packet data from call to the radio access network without completely tearing down the connection between the packet data serving node (PDSN) and the radio access network under current IS2001 IOS standards.
  • FIG. 1 is a block diagram of a mobile communication system in accordance with the present invention.
  • FIG. 2 is a message flow diagram in accordance with a preferred embodiment of the present invention.
  • FIG. 3 is a data layout diagram of an All registration update message in accordance with a preferred embodiment of the present invention.
  • FIG. 4 is a message flow diagram of another embodiment of the present invention.
  • FIG. 5 is a data layout diagram of a cause value portion of an A9 update A8 message in accordance with a preferred embodiment of the present invention. Description of the Preferred Embodiment
  • the packet data inactivity timer is a timer which is used to measure the duration of inactivity of a packet data service instance.
  • Delay sensitive applications such as streaming video for example may require a relatively small inactivity timer value.
  • Other less delay sensitive applications such as email access or web browsing may require a relatively longer packet data inactivity timer.
  • a packet data session is supporting multiple service instances at a given time.
  • FIG. 1 is a block diagram depicting a mobile communication system 100 in accordance with a preferred embodiment of the present invention.
  • communication system 100 is a system in accordance with the well-known Telecommunications Industry Association /Electronic Industries Association Interim Standard 2001-A (TIA/EIA IS-2001 IOS) .
  • System 100 comprises mobile network equipment and a mobile communication unit.
  • the mobile network equipment, or communication infrastructure comprises base stations (BSs) 120 and 130, mobile switching center (MSC) 115, packet control function (PCF) 111, and packet data serving node (PDSN) 106.
  • PCF 111 and base station 130 comprise a Radio Access Network (RAN) 110.
  • RAN Radio Access Network
  • a base station BS comprises a base station controller BSC 131 and one or more base transceiver systems (BTSs) 132, 133.
  • a mobile switching center (MSC) 115 comprises a switch 116 and a call controller / mobility manager 117.
  • the communication infrastructure is also preferably networked to the Internet 101 via PDSN 106 or alternatively networked to some other internet or intranet (not shown) .
  • AAAL Authentication Authorization Accounting Local server is coupled to PDSN 106 and provides storage for various parameters including inactivity timers and other packet data session parameters, and user profile information required by the system to support packet data calls.
  • Mobile station 140 preferably comprises a CDMA-capable mobile device that communicates with BS 120 and 130 via the CDMA2000 (TIA/EIA/IS- 2000) or HRPD wireless air interfaces (TIA/EIA/IS-856 : CDMA2000 High Rate Packet Data Air Interface Specification) .
  • This mobile device can be a cell phone, pager and internet capable device or any combination of these functions. For simplicity, only two BSs and one MS are shown in FIG. 1.
  • the present invention is preferably implemented using software techniques and technologies well-known in the art.
  • the present invention is implemented in software stored on the memory devices and executed by processors of the MSC 115, BSC 131, PDSN 106 and PCF 111.
  • the method described relative to FIG. 2 is preferably implemented in PSDN, PCF, and BS software.
  • mobile station or device 140 couples through base station 130, through PCF 111, through PDSN 106 to internet 101.
  • signaling information is transmitted via the A9 and All links between base station controller 131.
  • link A8 is established between base station 130 and PCF 111 for bearer traffic.
  • Link A9 between base station 130 and PCF 111 is used for signaling information.
  • Further links are established between PCF 111 and PDSN 106.
  • Link A10 is set up between PCF 111 and PDSN 106 for bearer traffic and similarly, link All between PDSN 106 and PCF 111 is used for signaling information. Bearer traffic may now flow between mobile station 140 and the internet 101.
  • the PDSN 106 will obtain the inactivity timer associated with the packet data service instance, and transmit it to base station 130. If more than one service instance is active, the packet data session at BS 130 will transition to dormant when the last inactivity timer expires. . If done under the present IOS standards, link A10 will immediately be torn down when the message is sent.
  • an All registration update message will be modified to transfer session parameters such as the inactivity timers, quality of service parameters (QoS) , or any other session related parameters requiring transfer from the PDSN to the PCF 111 and base station 130, and be able to indicate whether the message is used to release or update the packet data session.
  • session parameters such as the inactivity timers, quality of service parameters (QoS) , or any other session related parameters requiring transfer from the PDSN to the PCF 111 and base station 130, and be able to indicate whether the message is used to release or update the packet data session.
  • the AAA based inactivity timer feature provides the communication system operator with the capability to enhance the efficiency of the Radio Access Network (RAN) 110 radio resources by providing a mechanism to statically configure the packet data session inactivity timer value based on the realm, application, or QoS parameters or associated with the service instance.
  • the inactivity timer associated with the packet data connection is used by the serving BS 130 to transition the corresponding packet data session to the dormant state after it expires. If the mobile station 140 is supporting multiple active packet data services, the entire packet data session transitions to the dormant state when the last inactivity timer expires. If an inactivity timer associated with the packet data connection is unavailable or not passed by PDSN 106, a pre-provisioned default inactivity timer at the BS shall be used.
  • mobile station 140 may be in a dormant or active session 150.
  • PDSN 106 will send a message 151 (All- Registration Update) to PCF 111 to indicate the value of a packet data inactivity timer, QoS parameters, other session related parameters, or user profile information.
  • message 151 All- Registration Update
  • transmission of message 151 from PDSN 106 to PCF 111 results in the release of the A10 bearer connection.
  • the PDSN 106 is modified to send a All-registration update message 151 including session parameters such as the inactivity timer for a the packet data service accessed by mobile station 10.
  • PDSN sends an inactivity timer for each packet data connection requested by the mobile.
  • PDSN 106 also initiates a timer TSESUPD .
  • the PDSN 106 will generate this message 151 and transmit it to the PCF 111.
  • the parameters transmitted may include an inactivity timer, quality of service (QoS) parameters and/or other packet data session parameters.
  • QoS quality of service
  • the inactivity timer and/or other parameters are transmitted in a normal vendor/organization specific extension (NVSE) element. See FIG. 3.
  • the NVSE will have an application data field 205 in which the PDSN code will be set to 2 OH (hexadecimal) to indicate that the message is being sent to update a packet data connection as opposed to releasing a connection which is the present function of this message.
  • the PDSN CODE value of 2OH is new and indicates a packet data connection update.
  • the NVSE 200 is shown.
  • the application subtype field 207 will indicate the packet data session parameter transmitted is a packet data inactivity timer.
  • the application data field will indicate the value of the inactivity timer 209.
  • PCF 111 is modified such that when it receives the All-Registration Update message 151 with a PDSN code of 2OH, it will refrain from tearing down the connection between it and the PDSN 106.
  • the A9-update-A8 message is transmitted from base station 130 to the PCF 111.
  • this message 152 becomes a bi-directional message and PCF 111 will transmit this message 152 to base station 130.
  • the A9-update-A8 message 152 is now used to transfer or update packet session related parameters from PCF 111 to base station 130. These parameters include the inactivity timer and/or other packet data session parameters such as quality of service (QoS) parameters.
  • QoS quality of service
  • a new session parameters element is added to the A9-update-A8 message to carry the new or updated parameters.
  • a new cause value 225 of the A9 update A8 message 152 see FIG.
  • (session parameters update 7B hexadecimal) indicating the purpose of the message 152 is also added.
  • the A9-update-A8 message 152 is then transmitted from PCF 111 to base station 130.
  • PCF 111 also initiates a timer TUPD9.
  • An A8 bearer connection between base station 130 and PCF 111 is not required to support the preferred embodiment .
  • the A9-update-A8 ACK message is typically transmitted from PCF 111 to base station 130 and it acknowledges the A9- update-A8 message.
  • the A9-update-A8 ACK message 153 is modified to be a bi-directional message.
  • the message 153 will be transmitted from base station 130 to PCF 111 in response to the A9-update- A8 message sent in the reverse direction.
  • the A9-update-A8 ACK message will be transmitted from base station 130 to PCF 111.
  • PCF 111 then stops timer TUPD9. Then, PCF 111 sends an All registration ACK message 154 to PDSN 106.
  • the PCF 111 indicates this to the PDSN 106 in the All-Registration ack message.
  • PCF 111 fails to respond with All-Registration Ack message to the PDSN 106 initiated packet setup, PDSN 106 shall assume that the session update procedure failed.
  • the PDSN 106 may attempt to resend the All- Registration Update message to the PCF 111 a configurable number of times .
  • a packet data inactivity timer or any other packet data session parameters such as quality of service parameters, etc. may be transferred from the packet data serving node to the radio access network. Prior to these modifications which are a preferred embodiment of the present invention, no such transmission of system parameters was possible.
  • the AAA based inactivity timer feature can be retrofitted to existing RANs and PDSNs .
  • the AAA based inactivity timer feature can be retrofitted to existing RANs and PDSNs .
  • a great benefit of parameter passage between packet data serving nodes and mobile radio access networks is achieved.
  • retrofit of existing packet data server serving nodes and RANs is readily accomplished by adding the PDSN code element to the All-Registration Update message in previous versions of the standard.
  • a PCF running an older version of software which does not support PDSN initiated session updates receives an All-Registration Update message from the PDSN with a code value indicating session update
  • the PCF shall reject the session update attempt by ignoring the message, but shall not release the packet data session.
  • the PCF shall indicate this to the PDSN in the All-Registration ack message.
  • base station 130 transmits to call controller/mobility manager 117 of MSC 115 a handoff required (HO-REQ) message 155.
  • HO-REQ handoff required
  • FIG. 4 The message flow scenario of FIG. 4 is the same as FIG. 2 for steps 150 through 154.
  • Mobile station 140 may be in a dormant or active state.
  • the modified All registration update message 151 is transmitted from PDSN 106 to PCF 111.
  • a modified A9-update-A8 message 152 is sent from PCF 111 to base station 130.
  • a modified A9-update-A8 ACK message 153 is transmitted from base station 130 to PCF 111.
  • the All registration ACK message 154 is then sent from PCF 111 to PDSN 106.
  • Base station 130 transmits the handoff required message to call controller/mobility manager 117 of MSC 115 along with a new element including a packet data inactivity timer and/or other packet data session parameters such as QoS in the handoff required message 155.
  • Base station 130 then becomes the source base station.
  • the source base station 130 passes the inactivity parameter or other packet session parameters such as QoS along with it to the MSC.
  • the MSC manager 117 then generates a handoff request (HO-REQUEST) message 156 which is transmitted to target base station 120.
  • the handoff request message 156 includes the inactivity timer or other system parameter such as quality of service information.
  • MSC 115 forwards this modified handoff required message and target base station 120 to receive and process this modified handoff request message 15.
  • This modification has minimal impact on existing radio access elements and mobile switching center elements.
  • existing handoff request messages 156 are modified to include the inactivity timer and/or any updated session parameters, such as quality of service.
  • the above-mentioned modifications are easily retrofitable to the existing RAN and mobile switch equipment to further enhance the transmission of system parameters during a handoff. These modifications are relatively easily implemented in the various elements mentioned.
  • the mobile communication system so modified allows the system parameters including the inactivity timers, to be passed into the RAN from packet data serving nodes without tearing down the connections that, according to standards, would normally be torn down.

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Quality & Reliability (AREA)
  • Computer Security & Cryptography (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Data Exchanges In Wide-Area Networks (AREA)
PCT/US2002/036461 2002-01-08 2002-11-13 Packet data serving node initiated updates for a mobile communication system Ceased WO2003061221A1 (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
US10/497,869 US7043249B2 (en) 2002-01-08 2002-11-13 Packet data serving node initiated updates for a mobile communications system
AU2002343696A AU2002343696A1 (en) 2002-01-08 2002-11-13 Packet data serving node initiated updates for a mobile communication system
KR10-2004-7010688A KR20040071299A (ko) 2002-01-08 2002-11-13 이동 통신 시스템을 위한 패킷 데이터 서빙 노드 초기갱신들
JP2003561184A JP4464138B2 (ja) 2002-01-08 2002-11-13 パケットデータサービングノードによって開始される移動通信システムの更新
US11/333,866 US7539171B2 (en) 2002-01-08 2006-01-17 Packet data serving node initiated updates for a mobile communication system

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US34670002P 2002-01-08 2002-01-08
US60/346,700 2002-01-08

Related Child Applications (1)

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US11/333,866 Continuation US7539171B2 (en) 2002-01-08 2006-01-17 Packet data serving node initiated updates for a mobile communication system

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WO2003061221A1 true WO2003061221A1 (en) 2003-07-24

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US (2) US7043249B2 (https=)
JP (1) JP4464138B2 (https=)
KR (1) KR20040071299A (https=)
CN (1) CN100405780C (https=)
AU (1) AU2002343696A1 (https=)
WO (1) WO2003061221A1 (https=)

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