US20070211683A1 - System and method for reducing information communicated between universal mobile telecommunication system multimedia capable units - Google Patents

System and method for reducing information communicated between universal mobile telecommunication system multimedia capable units Download PDF

Info

Publication number
US20070211683A1
US20070211683A1 US11801102 US80110207A US2007211683A1 US 20070211683 A1 US20070211683 A1 US 20070211683A1 US 11801102 US11801102 US 11801102 US 80110207 A US80110207 A US 80110207A US 2007211683 A1 US2007211683 A1 US 2007211683A1
Authority
US
Grant status
Application
Patent type
Prior art keywords
ue
media
network
cscf
sip
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.)
Abandoned
Application number
US11801102
Inventor
Kamel Shaheen
Brian Kiernan
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.)
InterDigital Technology Corp
Original Assignee
InterDigital Technology Corp
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

Links

Images

Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L65/00Network arrangements or protocols for real-time communications
    • H04L65/60Media handling, encoding, streaming or conversion
    • H04L65/601Media manipulation, adaptation or conversion
    • H04L65/605Media manipulation, adaptation or conversion intermediate
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L65/00Network arrangements or protocols for real-time communications
    • H04L65/10Signalling, control or architecture
    • H04L65/1003Signalling or session protocols
    • H04L65/1006SIP
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L65/00Network arrangements or protocols for real-time communications
    • H04L65/10Signalling, control or architecture
    • H04L65/1013Network architectures, gateways, control or user entities
    • H04L65/102Gateways
    • H04L65/1023Media gateways
    • H04L65/103Media gateways in the network
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L65/00Network arrangements or protocols for real-time communications
    • H04L65/10Signalling, control or architecture
    • H04L65/1013Network architectures, gateways, control or user entities
    • H04L65/102Gateways
    • H04L65/1033Signalling gateways
    • H04L65/104Signalling gateways in the network
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L65/00Network arrangements or protocols for real-time communications
    • H04L65/80QoS aspects
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L69/00Application independent communication protocol aspects or techniques in packet data networks
    • H04L69/04Protocols for data compression
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATIONS NETWORKS
    • H04W28/00Network traffic or resource management
    • H04W28/02Traffic management, e.g. flow control or congestion control
    • H04W28/06Optimizing the usage of the radio link, e.g. header compression, information sizing, discarding information
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATIONS NETWORKS
    • H04W80/00Wireless network protocols or protocol adaptations to wireless operation, e.g. WAP [Wireless Application Protocol]
    • H04W80/08Upper layer protocols
    • H04W80/10Upper layer protocols adapted for application session management, e.g. SIP [Session Initiation Protocol]
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATIONS NETWORKS
    • H04W28/00Network traffic or resource management
    • H04W28/16Central resource management; Negotiation of resources or communication parameters, e.g. negotiating bandwidth or QoS [Quality of Service]
    • H04W28/18Negotiating wireless communication parameters
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATIONS NETWORKS
    • H04W76/00Connection management
    • H04W76/10Connection setup
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATIONS NETWORKS
    • H04W88/00Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
    • H04W88/18Service support; Network management devices
    • H04W88/182Network node acting on behalf of an other network entity, e.g. proxy

Abstract

Method and Apparatus for making more efficient use of air link resources and network capacity in a mobile telecommunications system in which unauthorized and/or unsupported media types transmitted in a session initialization protocol (SIP) message sent from one equipment user (UE) to another are deleted by the network(s) as the SIP message is routed through the system.

Description

    CROSS REFERENCE TO RELATED APPLICATIONS
  • [0001]
    This application is a continuation of U.S. patent application Ser. No. 10/022,998 filed Dec. 18, 2001, which claims the benefit of U.S. Provisional Patent Application No. 60/294,192, filed on May 29, 2001, which are incorporated by reference as if fully set forth.
  • BACKGROUND
  • [0002]
    The present invention relates to wireless telecommunications. More specifically, the present invention relates to a technique for reducing unnecessary consumption of the air link resources and network capacity by reducing the size of transmitted messages.
  • [0003]
    The current third generation partnership project (3GPP) and internet engineering task force (IETF) session description protocol (SDP) protocol (RFC 2327) mandate that the proxy call state control functions (P-CSCF), the serving call state control functions (S-CSCFs) and the terminating end user (User Equipment UE) to examine the media contents of the session description protocol (SDP) text in the session initialization protocol (SIP) message.
  • [0004]
    FIG. 1 shows a simplified session initiation system. A user, UE-A 20, desires to initiate a media session with another user UE-B 40. In FIG. 1, UE-A 20 is shown as “roaming” in network A 22, not its home network. UE-A 20 sends a SIP invite message 44 1 to UE-B 40 via network A 22. The UE-A SIP invite 44 1 indicates all the media types that it can support. As shown in FIG. 1, the SIP invite 44 1 has a header, global information, and a list of the supported media types (media 1 to media 6). The supported media types include information for each media, such as the CODEC type, stream format, stream bit rate, and communication port number. Under the proposed system, there are no limits on the number of media types that a UE can include in the SIP invite message.
  • [0005]
    FIG. 2 is an example of a SIP invite message. The SIP invite message has a header, global information and supported media types for UE-A 20 for potential use in the proposed media session. The header includes various overhead information, such as the origin and destination of the SIP invite. The global information includes information common to all the proposed media types, such as the destination address and the proposed session identification (ID) number. The supported media types are listed. In this example, four media types are listed, two video (video media 1 and video media 2) and two audio (audio media 3 and audio media 4). Each proposed media session includes information regarding the media session, such as the port number, real time protocol (RTP) payload type and RTP format and clock rate port.
  • [0006]
    UE-A 20 sends the SIP invite to its current network, such as network A 22, in which it is currently located. UE-A may be “roaming,” as shown in FIG. 1 and communicating with a network, network A 22, or it may be in its home network, network B 30. The SIP invite 44 1 is examined by a P-CSCF 24 of its current network, such as network A 22, for routing to its destination, UE-B 40 via UE-A's home network, network B 30. The P-CSCF 24 examines the session description protocol (SDP) multimedia contents of the SIP invite 44 1 for validation and authorization. If the P-CSCF's network, network A 24, does not support any part of the media information, (such as the CODESs, bit rate or the type), it flags that portion of the media information by setting the port number to “0” and leaving the other contents of the media information untouched, as shown for media 5 and 6 for SIP invite 44 2.
  • [0007]
    FIG. 3 is an example of such a flagged SIP invite 44. To illustrate, the P-CSCF cannot support video media 1. As shown in FIG. 3, the port number is set to “0” so that UE-B 40 realized that video media 1 cannot be selected for the media session.
  • [0008]
    The network A P-CSCF 24 forwards the modified SIP invite 44 2 to the network B S-CSCF 26 for further handling, routing and validation. If UE-A 20 is in the home network, both the P-CSCF and S-CSCF function are performed by the home network 30. The network B S-CSCF 26 examines the SIP invite 44 2 including the media information. Media types not supported by UE-A's service license agreement (SLA) are flagged. If UE-A 20 is in its home network, the flagging process is only performed by the S-CSCF 26, not by the P-CSCF 24. The S-CSCF 26 forwards the SIP invite 44 3 to UE-B's home network, network C36, using intorgating-CSCFS (I-CSCF) 28, 32.
  • [0009]
    The network C S-CSCF 34 similarly examines the SIP invite 44 3 for media types not available under UE-B's SLA. The not available media types are flagged, as illustrated for media 1 and of SIP 44 4. If UE-B 40 is not in its home network, as shown, the SIP invite 44 4 is forwarded to the P-CSCF 38 of the network, network D 42, where UE-B 40 is currently located, or “roaming.” If UE-B 40 is in its home network, the SIP invite 44 4 is forwarded to the P-CSCF 38 of the home network.
  • [0010]
    The P-CSCF 38 flags the media types not supported by the network, network D. No additional flagged media types are shown in SIP invite 44 5. If the UE-B is in its home network, the flagging is only performed by the S-CSCF 34. The P-CSCF 38 sends the SIP invite 44 5 to UE-B 40. UE-B 40 examines the media information of the SIP invite 44 5 and determines whether it is capable of using any of the unflagged media types. If it can not use any of the unflagged media types or there are not any remaining unflagged media types, UE-B 40 sends UE-A 20 a session description protocol message (SPM) 46 with all media types flagged. If it can use the unflagged media types, UE-B 40 selects one or more of the available media types for the session. The selected media types unflagged and the flagged media types are returned to UE-A 20 in the SPM 44.
  • [0011]
    As shown in FIGS. 2 and 3, the SIP invite message 44 is large and, accordingly, consumes valuable air interface and wireless network resources. This resource consumption either degrades the network performance or reduces the maximum number of users serviced by the networks.
  • [0012]
    Accordingly, it is desirable to have alternate approaches for media session initiation.
  • SUMMARY
  • [0013]
    The present invention reduces the size of the SIP message by eliminating or deleting unsupported and/or unauthorized media types in the SIP along the signaling route from the originating end user to the terminating one and back. The present invention restricts the media information carried within the SIP message to information that is allowed by the network and authorized for the users at both ends.
  • BRIEF DESCRIPTION OF THE DRAWINGS
  • [0014]
    FIG. 1 is an example of an overall system diagram for media session initiation.
  • [0015]
    FIG. 2 is an example of a Session Initialization Protocol (SIP) message.
  • [0016]
    FIG. 3 is an example of a SIP message with a flagged media type.
  • [0017]
    FIGS. 4 a and 4 b are signaling diagrams.
  • [0018]
    FIG. 5 is an example of an overall system diagram.
  • [0019]
    FIG. 6 is an example of a SIP message.
  • [0020]
    FIG. 7 is an example of a SIP message with removed media information.
  • DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS
  • [0021]
    FIGS. 4 a and 4 b is a signaling diagram of the present invention. FIG. 5 illustrates an example of the components of the media session initiation. UE-A 46 desires to initiate a media session with UE-B 68. UE-A 46 and UE-B 48 may be any wireless communication device, such as a mobile phone, personal computer (PC) or personal digital assistant (PDA). UE-A 46 in the system of FIG. 5 is shown as “roaming” in network A 50. For FIG. 1, network B 58 is the “home” network for UE-A 46. Alternately, UE-A 46 may be in its home network.
  • [0022]
    UE-A 46 determines the CODECS available for the media types for the proposed session, (74). A SIP invite 52 1, such as shown in FIG. 2, is composed using this information. UE-A 46 sends the SIP invite message 52 1 intended for UE-B 58 via network A is P-CSCF 48. UE-B 68 is shown as “roaming” in network D 70. Alternately, UE-B 68 may be in its home network, network C 64. The SIP invite 52 1 includes all the media types that UE-A 46 can support and invites UE-B 68 to choose the type(s) that it can support. The media information includes the CODEC types, stream format, stream bit rate, and communication port number, among other media attributes. Under the current proposed system, there are no limits on the number of media types that a UE can include in the SIP invite message 52 1. Furthermore, there are no restrictions on the end user, such as UE-B 68 to include unauthorized unsupported media types.
  • [0023]
    The P-CSCF 48, incorporated in network A, routes the SIP invite 52 1 to the end user (UE-B 68). The P-CSCF function 48 initiates examination of the SIP invite message 52 1 for routing and for validation and authorization of the SDP multimedia contents. If network A 50 does not support any part of the media information (such as the CODECS, the bit rate or the media type), P-CSCF 48 deletes the media entry from the SDP message leaving only the supported media entries, (76), as shown as SIP invite 52 2. In the example SIP invite 52 2, media types 5 and 6 have been deleted, since it is not supported by network A 50. Deleting the media type is performed by removing all of the information of the unsupported media type.
  • [0024]
    FIG. 6 is an example of the SIP invite message 44 of FIG. 2 with the media types deleted, as shown as SIP invite 52. To illustrate, network A 50 does not support video media types, (video media 1 and 2). As shown in FIG. 6, the information concerning video media 1 and 2 is deleted, leaving only audio media 3 and 4. The P-CSCF 48 then forwards the modified SIP invite 52 2 to the S-CSCF 54 of network B 58 for further handling (routing and validation). The S-CSCF 54 of network B 58 examines the SIP invite 52 2 including the modified SDP message. The S-CSCF 54 will remove unauthorized media types that UE-A 46 is not permitted to use under its SLA, (78). The S-CSCF 54 (which usually exists in the UE home network) also removes any not permitted media contents. In the FIG. 5 example, media type 1 is deleted, as shown for SIP invite 52 3. If UE-A 46 is in its home network, typically both the P-CSCF and S-CSCF function 46, 54 are performed by the home network, with only the S-CSCF 54 deleting media types.
  • [0025]
    The S-CSCF 54 forwards the further modified SIP invite 52 3 to UE-B's home network, network C 64, through its I-CSCF 56 (Intorgating-CSCF). After receiving the SIP invite 52 3 via its I-CSCF 60, the S-CSCF 62 of network C 64 removes media types not permitted under UE-B's SLA, (80). After forwarding the SIP invite 52 4 to UE-B's current network D 70, P-CSCF 66 removes unsupported media types of the current network, where UE-B is roaming, (82). As shown in FIG. 5, no additional media types are deleted in SIP invite 52 5. If UE-B 68 is in its home network, typically the S-CSCF and P-CSCF functions 62, 66 are performed by the home network, with the S-CSCF 62 deleting the media types.
  • [0026]
    UE-B 68 examines the remaining SDP media types of the SIP invite 52 5 and determines if it can support them. If it can, it selects one or more of the remaining media types and sends UE-A 48, a session progress message 72, (84), through the network D P-CSCF 66. If it can not support any of the media types or none remain in the SDP information, UE-B 68 also sends a session progress message with all the media types deleted.
  • [0027]
    FIG. 7 is an example of a SPM 72. To illustrate a possible derivation for SPM 72, UE-B 68 receives the SIP invite 52 of FIG. 6. UE-B 68 is capable of supporting audio media 3. A SPM 72 is generated at UE-B 68 only containing the selected media type, audio media 3, and a header and global information. Audio media type 4 is not included.
  • [0028]
    Upon reception of the SPM 72, the P-CSCF 66 authorizes network D 70 to allocated the resources for the sessions indicated by the media type information, (86). The SPM progresses to UE-A 46 through the network C S-CSCF 62, the network B S-CSCF 54 and the network A P-CSCF 48. The network A P-CSCF 48 authorizes network A 50 to allocate the resources for the indicated session(s), (88). After the P-CSCF 48 sends the SPM 72 to UE-A 46, UE-A 46 determines the initial CODEC(S) to use for the media session(s) of the SPM 72, (90).
  • [0029]
    UE-A 46 sends a final SPM to UE-B 68, through the same path, indicating the selected CODEC(S). At the same time as sending the final message, UE-A reserves the resources for the selected CODEC, (92), and, if successful, sends a success message to UE-B 68. After UE-B receives the final SPM, it reserves resources for the selected CODEC, (94).
  • [0030]
    When UE-B 68 receives the success message, it stops sending messages with its old CODEC, sets up the receiver for the new CODEC and sends an O.K. message to UE-A, (98). After UE-A 98 receives the O.K. message, it sends a success message with the new CODEC and sets up the receiver for the new CODEC, (98). After UE-B 68 receives the success message, it starts sending data with the new CODEC, (100).

Claims (5)

  1. 1. A method of establishing a multimedia communication session between a first user equipment (UE) and a second UE through a plurality of networks having functions, the functions including a first proxy call state control function (P-CSCF) associated with the first UE and a first network, a first serving call state control function (S-CSCF) associated with the first UE and a second network, a first interrogating call state control function (I-CSCF) associated with the first UE and the second network, a second interrogating call state control function (I-CSCF) associated with the second UE and a third network, a second serving call state control function (S-CSCF) associated with the second UE and the third network, and a second proxy call state control function (P-CSCF) associated with the second UE and a fourth network, the method comprising:
    the first UE generating a session initialization protocol (SIP) message for the second UE, setting forth the media types the first UE supports for potential use in a proposed multimedia communication session;
    the first UE sending the SIP message to the first P-CSCF;
    the first P-CSCF receiving the SIP message and deleting therefrom media types not supported by said first network to form a first modified SIP, and sending the first modified SIP message to the first S-CSCF;
    the first S-CSCF receiving the first modified SIP, deleting therefrom media types the first UE is not authorized to use to form a second modified SIP, and sending the second modified SIP to the first I-CSCF;
    the first I-CSCF receiving the second modified SIP and routing the second modified SIP to the second I-CSCF;
    the second I-CSCF receiving the second modified SIP and sending the second modified SIP to a second S-CSCF;
    the second S-CSCF receiving the second modified SIP and deleting therefrom media types the second UE is not authorized to use to form a third modified SIP, and sending the third modified SIP to the second P-CSCF;
    the second P-CSCF receiving the third modified SIP and deleting therefrom media types not supported by the fourth network to form a fourth modified SIP, and sending the fourth modified SIP to the second UE; and
    the second UE receiving the fourth modified SIP and deleting therefrom media types not supported by the second UE, and selecting at least one media type not deleted to form a session description protocol message (SPM) for the first UE, and sending the SPM for the first UE to the second P-CSCF.
  2. 2. The method of claim 1 wherein the deleting of media types comprises removing all of the information of the media types.
  3. 3. The method of claim 1 further comprising:
    the second P-CSCF authorizing the fourth network to allocate resources for the multimedia session indicated by media types in the SPM, and sending the SPM to the second S-CSCF;
    the second S-CSCF receiving the SPM and sending it to the second I-CSCF;
    the second I-CSCF receiving the SPM and sending it to the first I-CSCF;
    the first I-CSCF receiving the SPM and sending it to the first S-CSCF;
    the first S-CSCF receiving the SPM and sending it to the first P-CSCF;
    the first P-CSCF receiving the SPM and authorizing the first network to allocate resources for the multimedia session indicated by media types in the SPM, and sending the SPM to the first UE.
  4. 4. The method of claim 3 further comprising the first UE:
    receiving the SPM;
    determining the media types in the SPM;
    selecting at least one media type to use for the multimedia communication session;
    sending a final SPM message indicating said selected media type to the second UE;
    reserving resources needed for the multimedia communication session;
    if the resources are successfully reserved, sending a success message to the second UE.
  5. 5. The method of claim 4 further comprising:
    the second UE receiving the final SPM message and the success message;
    the second UE reconfiguring to use said selected media type;
    the second UE sending an O.K. message to the first UE;
    the first UE receiving the O.K. message;
    the first UE reconfiguring to use said selected media type;
    the first UE sending another success message to the second UE;
    the second UE receiving the another success message; whereby the multimedia communication session is established.
US11801102 2001-05-29 2007-05-08 System and method for reducing information communicated between universal mobile telecommunication system multimedia capable units Abandoned US20070211683A1 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
US29419201 true 2001-05-29 2001-05-29
US10022998 US7218626B2 (en) 2001-05-29 2001-12-18 System and method for reducing information communicated between universal mobile telecommunication system multimedia capable units
US11801102 US20070211683A1 (en) 2001-05-29 2007-05-08 System and method for reducing information communicated between universal mobile telecommunication system multimedia capable units

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US11801102 US20070211683A1 (en) 2001-05-29 2007-05-08 System and method for reducing information communicated between universal mobile telecommunication system multimedia capable units

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
US10022998 Continuation US7218626B2 (en) 2001-05-29 2001-12-18 System and method for reducing information communicated between universal mobile telecommunication system multimedia capable units

Publications (1)

Publication Number Publication Date
US20070211683A1 true true US20070211683A1 (en) 2007-09-13

Family

ID=26696603

Family Applications (2)

Application Number Title Priority Date Filing Date
US10022998 Active 2025-01-18 US7218626B2 (en) 2001-05-29 2001-12-18 System and method for reducing information communicated between universal mobile telecommunication system multimedia capable units
US11801102 Abandoned US20070211683A1 (en) 2001-05-29 2007-05-08 System and method for reducing information communicated between universal mobile telecommunication system multimedia capable units

Family Applications Before (1)

Application Number Title Priority Date Filing Date
US10022998 Active 2025-01-18 US7218626B2 (en) 2001-05-29 2001-12-18 System and method for reducing information communicated between universal mobile telecommunication system multimedia capable units

Country Status (7)

Country Link
US (2) US7218626B2 (en)
EP (1) EP1390770A4 (en)
JP (1) JP3853788B2 (en)
KR (4) KR100594790B1 (en)
CN (1) CN1545623A (en)
CA (1) CA2448653A1 (en)
WO (1) WO2002097458A1 (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20050213606A1 (en) * 2004-03-25 2005-09-29 Jiun-Yao Huang Method of triggering application service using response filter criteria and IP multimedia subsystem using the same
US20070201809A1 (en) * 2006-02-24 2007-08-30 Jeyhan Karaoguz Multi-Communication Pathway Addressing In A Mobile Communication Device
US20080195997A1 (en) * 2007-02-14 2008-08-14 Magix Ag System and method for creation of personalized applications for mobile devices
US20100205290A1 (en) * 2007-11-27 2010-08-12 Zhaojun Peng Medium resource reservation method, service package information obtaining method and apparatus
US20120303831A1 (en) * 2011-05-26 2012-11-29 Siddharth Toshniwal Systems and Methods for Authorizing Services in a Telecommunications Network
US9755859B2 (en) * 2008-12-12 2017-09-05 At&T Intellectual Property I, L.P. Method and apparatus for completing a circuit switched service call in an internet protocol network

Families Citing this family (30)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8483206B2 (en) * 2001-11-16 2013-07-09 Alcatel Lucent Method and system for providing a multimedia call model
EP2043326A3 (en) 2002-02-14 2009-04-22 Avaya Technology Corp. Presence tracking and name space interconnection techniques
US20030188010A1 (en) * 2002-03-27 2003-10-02 Imran Raza Peer to peer mixed media messaging
US7474741B2 (en) 2003-01-20 2009-01-06 Avaya Inc. Messaging advise in presence-aware networks
JP2004265154A (en) * 2003-02-28 2004-09-24 Motorola Inc Session maintaining method in heterogeneous network, and its mobile node
US7701915B2 (en) * 2003-06-27 2010-04-20 Nokia Corporation Method in a communication system, a communication system and a communication device
US9398152B2 (en) 2004-02-25 2016-07-19 Avaya Inc. Using business rules for determining presence
US7574595B2 (en) * 2004-06-22 2009-08-11 Interdigital Technology Corporation Transparent session initiated protocol
CN100433752C (en) 2004-06-23 2008-11-12 中国电信股份有限公司 Method of subscriber registration and communication in telephone terminal of session initiation protocol (SIP)
US7796603B1 (en) * 2005-01-14 2010-09-14 Acme Packet, Inc. Method and system for controlling media sessions in networks that use communication protocols with distinct signaling and media channels
US8249076B1 (en) 2005-01-14 2012-08-21 Acme Packet, Inc. Method, system and architecture for validating media sessions in networks that use communication protocols with distinct signaling and media channels
US7852749B2 (en) * 2005-04-06 2010-12-14 Callwave, Inc. Methods and systems for routing telecommunications
JP4690767B2 (en) * 2005-05-11 2011-06-01 株式会社日立製作所 Network system, a server apparatus and a communication method
DE502006009118D1 (en) * 2005-08-04 2011-04-28 Deutsche Telekom Ag A method for collecting user behavior at run-time in the mobile 3GPP IP based Multimedia Subsystem (IMS)
EP1943801A1 (en) * 2005-10-31 2008-07-16 TELEFONAKTIEBOLAGET LM ERICSSON (publ) Transfer of part of a push to talk session
US8463307B1 (en) * 2005-11-28 2013-06-11 Sprint Spectrum L.P. Method of requesting a communication session using segmented signaling messages
US8001474B2 (en) * 2006-09-25 2011-08-16 Embarq Holdings Company, Llc System and method for creating and distributing asynchronous bi-directional channel based multimedia content
EP2096796A4 (en) * 2006-12-15 2012-12-26 Panasonic Corp Radio communication device
US8150003B1 (en) 2007-01-23 2012-04-03 Avaya Inc. Caller initiated undivert from voicemail
CA2701123C (en) * 2007-09-29 2014-05-20 Research In Motion Limited System and method of responding to a request in a network environment including ims
EP2218242A1 (en) 2007-10-27 2010-08-18 Research In Motion Limited Content disposition system and method for processing message content in a distributed environment
CN101753537B (en) 2008-11-28 2012-08-15 中国移动通信集团公司 Server and web sending and displaying method
US8301581B2 (en) 2009-09-24 2012-10-30 Avaya Inc. Group compositing algorithms for presence
US8565386B2 (en) * 2009-09-29 2013-10-22 Avaya Inc. Automatic configuration of soft phones that are usable in conjunction with special-purpose endpoints
US9516069B2 (en) 2009-11-17 2016-12-06 Avaya Inc. Packet headers as a trigger for automatic activation of special-purpose softphone applications
KR100975388B1 (en) * 2010-01-28 2010-08-11 (주)효원엔지니어링 Separation prevention structure of water pipe with under the ground
KR100975387B1 (en) * 2010-01-28 2010-08-11 (주)효원엔지니어링 Breakage prevention structure of water pipe
JP5022474B2 (en) * 2010-05-07 2012-09-12 株式会社日立製作所 Server apparatus, communication method, and program
JP5614257B2 (en) * 2010-11-22 2014-10-29 株式会社リコー Communication device
US9832126B1 (en) * 2013-12-13 2017-11-28 West Corporation Reduction in network congestion

Citations (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6275574B1 (en) * 1998-12-22 2001-08-14 Cisco Technology, Inc. Dial plan mapper
US6366577B1 (en) * 1999-11-05 2002-04-02 Mci Worldcom, Inc. Method for providing IP telephony with QoS using end-to-end RSVP signaling
US6421674B1 (en) * 2000-02-15 2002-07-16 Nortel Networks Limited Methods and systems for implementing a real-time, distributed, hierarchical database using a proxiable protocol
US20020126701A1 (en) * 2000-11-08 2002-09-12 Nokia Corporation System and methods for using an application layer control protocol transporting spatial location information pertaining to devices connected to wired and wireless internet protocol networks
US20020165966A1 (en) * 2001-01-10 2002-11-07 Widegren Ina B. Method and apparatus for coordinating end-to-end quality of service requirements for media flows in a multimedia session
US6496479B1 (en) * 1997-09-26 2002-12-17 Sony Corporation Network resource reservation control method and apparatus, receiving terminal, sending terminal, and relay apparatus
US20040028037A1 (en) * 2000-12-22 2004-02-12 Juha Rasanen Method and system for modifying a connection parameter
US20040077333A1 (en) * 2000-12-22 2004-04-22 Juha-Pekka Koskinen Method and network device for accounting chargeable signaling
US20040076145A1 (en) * 2000-12-22 2004-04-22 Timo Kauhanen Method and system for establishing a multimedia connection by negotiating capability in an outband control channel
US6910074B1 (en) * 2000-07-24 2005-06-21 Nortel Networks Limited System and method for service session management in an IP centric distributed network
US6967933B2 (en) * 2001-07-12 2005-11-22 Telcordia Technologies, Inc. Processing multimedia calls in a packet-based network
US7106718B2 (en) * 2001-02-09 2006-09-12 Telefonaktiebolaget Lm Ericsson (Publ) Signaling quality of service class for use in multimedia communicatations
US7394807B2 (en) * 2000-08-14 2008-07-01 Nokia Corporation Communication system and method providing a mode selection procedure
US7546376B2 (en) * 2000-11-06 2009-06-09 Telefonaktiebolaget Lm Ericsson (Publ) Media binding to coordinate quality of service requirements for media flows in a multimedia session with IP bearer resources

Patent Citations (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6496479B1 (en) * 1997-09-26 2002-12-17 Sony Corporation Network resource reservation control method and apparatus, receiving terminal, sending terminal, and relay apparatus
US6275574B1 (en) * 1998-12-22 2001-08-14 Cisco Technology, Inc. Dial plan mapper
US6366577B1 (en) * 1999-11-05 2002-04-02 Mci Worldcom, Inc. Method for providing IP telephony with QoS using end-to-end RSVP signaling
US6421674B1 (en) * 2000-02-15 2002-07-16 Nortel Networks Limited Methods and systems for implementing a real-time, distributed, hierarchical database using a proxiable protocol
US6910074B1 (en) * 2000-07-24 2005-06-21 Nortel Networks Limited System and method for service session management in an IP centric distributed network
US7394807B2 (en) * 2000-08-14 2008-07-01 Nokia Corporation Communication system and method providing a mode selection procedure
US7546376B2 (en) * 2000-11-06 2009-06-09 Telefonaktiebolaget Lm Ericsson (Publ) Media binding to coordinate quality of service requirements for media flows in a multimedia session with IP bearer resources
US20020126701A1 (en) * 2000-11-08 2002-09-12 Nokia Corporation System and methods for using an application layer control protocol transporting spatial location information pertaining to devices connected to wired and wireless internet protocol networks
US20040076145A1 (en) * 2000-12-22 2004-04-22 Timo Kauhanen Method and system for establishing a multimedia connection by negotiating capability in an outband control channel
US7330542B2 (en) * 2000-12-22 2008-02-12 Nokia Corporation Method and system for establishing a multimedia connection by negotiating capability in an outband control channel
US20040028037A1 (en) * 2000-12-22 2004-02-12 Juha Rasanen Method and system for modifying a connection parameter
US20040077333A1 (en) * 2000-12-22 2004-04-22 Juha-Pekka Koskinen Method and network device for accounting chargeable signaling
US20020165966A1 (en) * 2001-01-10 2002-11-07 Widegren Ina B. Method and apparatus for coordinating end-to-end quality of service requirements for media flows in a multimedia session
US7106718B2 (en) * 2001-02-09 2006-09-12 Telefonaktiebolaget Lm Ericsson (Publ) Signaling quality of service class for use in multimedia communicatations
US6967933B2 (en) * 2001-07-12 2005-11-22 Telcordia Technologies, Inc. Processing multimedia calls in a packet-based network

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20050213606A1 (en) * 2004-03-25 2005-09-29 Jiun-Yao Huang Method of triggering application service using response filter criteria and IP multimedia subsystem using the same
US8838101B2 (en) 2006-02-24 2014-09-16 Broadcom Corporation Multi-communication pathway addressing in a mobile communication device
US7912468B2 (en) * 2006-02-24 2011-03-22 Broadcom Corporation Multi-communication pathway addressing in a mobile communication device
US20110159872A1 (en) * 2006-02-24 2011-06-30 Broadcom Corporation Multi-communication pathway addressing in a mobile communication device
US20070201809A1 (en) * 2006-02-24 2007-08-30 Jeyhan Karaoguz Multi-Communication Pathway Addressing In A Mobile Communication Device
US20080195997A1 (en) * 2007-02-14 2008-08-14 Magix Ag System and method for creation of personalized applications for mobile devices
US7764956B2 (en) * 2007-02-14 2010-07-27 Magix, Ag System and method for creation of personalized applications for mobile devices
US20100205290A1 (en) * 2007-11-27 2010-08-12 Zhaojun Peng Medium resource reservation method, service package information obtaining method and apparatus
US8296444B2 (en) 2007-11-27 2012-10-23 Huawei Technologies Co., Ltd. Medium resource reservation method, service package information obtaining method and apparatus
US9755859B2 (en) * 2008-12-12 2017-09-05 At&T Intellectual Property I, L.P. Method and apparatus for completing a circuit switched service call in an internet protocol network
US20120303831A1 (en) * 2011-05-26 2012-11-29 Siddharth Toshniwal Systems and Methods for Authorizing Services in a Telecommunications Network
US9160799B2 (en) * 2011-05-26 2015-10-13 Sonus Networks, Inc. Systems and methods for authorizing services in a telecommunications network
US20150381601A1 (en) * 2011-05-26 2015-12-31 Sonus Networks, Inc. Systems and methods for authorizing services in a telecommunications network
US9497183B2 (en) * 2011-05-26 2016-11-15 Sonus Networks, Inc. Systems and methods for authorizing services in a telecommunications network

Also Published As

Publication number Publication date Type
KR20040007625A (en) 2004-01-24 application
WO2002097458A1 (en) 2002-12-05 application
KR20080020692A (en) 2008-03-05 application
CA2448653A1 (en) 2002-12-05 application
US20020181424A1 (en) 2002-12-05 application
CN1545623A (en) 2004-11-10 application
KR20050091101A (en) 2005-09-14 application
JP2004529584A (en) 2004-09-24 application
EP1390770A4 (en) 2009-10-28 application
KR100594790B1 (en) 2006-07-03 grant
JP3853788B2 (en) 2006-12-06 grant
US7218626B2 (en) 2007-05-15 grant
EP1390770A1 (en) 2004-02-25 application
KR20070102578A (en) 2007-10-18 application

Similar Documents

Publication Publication Date Title
US7961714B1 (en) Providing packet-based multimedia services via a circuit bearer
US7512090B2 (en) System and method for routing calls in a wireless network using a single point of contact
US20040187021A1 (en) Mobile network having IP multimedia subsystem (IMS) entities and solutions for providing simplification of operations and compatibility between different IMS entities
US20040152469A1 (en) Message-based conveyance of load control information
US20070058789A1 (en) Method and apparatus for interworking voice and multimedia services between CSI terminal and IMS terminal
US20060036741A1 (en) Method of managing a connection release, corresponding system and device
US7609673B2 (en) Packet-based conversational service for a multimedia session in a mobile communications system
US20050105511A1 (en) Method and system for establishing a media session
US20100211660A1 (en) System and method for pushing content to a terminal utilizing a network-initiated data service technique
US20040249887A1 (en) Conversational bearer negotiation
US20070002832A1 (en) Establishing sessions with defined quality of service
US20050047423A1 (en) Protocol interworking framework
US20080137646A1 (en) Providing interaction Management for Communication networks
US7058042B2 (en) One-to-one communication
US20070189215A1 (en) Method for reducing interface load of home subscriber server
US20020194378A1 (en) System and method of hiding an internet protocol (IP) address of an IP terminal during a multimedia session
US20060034195A1 (en) SIP message extension for push to watch service
US20040109459A1 (en) Packet filter provisioning to a packet data access node
US20060256748A1 (en) System and method for interworking between IMS network and H.323 network
US20090129388A1 (en) Sip header reduction
US20040255156A1 (en) System and method for dynamically creating at least one pinhole in a firewall
US20040085949A1 (en) User equipment device enabled for sip signalling to provide multimedia services with qos
US20040229596A1 (en) Charging in communication networks
US20020191597A1 (en) Association of charging between communication systems
US20050141456A1 (en) Session initiation protocol (SIP) based user initiated handoff