公开(公告)号：EP2055041A1

公开(公告)日：2009-05-06

申请号：EP07811100.2

申请日：2007-08-06

Applicant: LUCENT TECHNOLOGIES INC.

Inventor： CASATI, Alessio ,  CHENG, Fang-Chen ,  PALAT, Sudeep, Kumar ,  TATESH, Said

IPC: H04L12/18

CPC classification number: H04W72/005 ,  H04L12/1881 ,  H04L12/189 ,  H04W56/00 ,  H04W56/001

Abstract: A communication system includes a decentralized, flat architecture where a plurality of base nodes each include controller capabilities so that a centralized base node such as a radio network controller is not required. At least one of the base nodes acts as an anchor node. The anchor node associates a time stamp with at least one packet and provides that to the plurality of base nodes. In one example, a multicast approach is used by a router device for distributing the packet and the associated time stamp to the plurality of base nodes. Each base node controls a timing of a transmission of the at least one packet over a wireless interface responsive to the associated time stamp.

公开(公告)号：EP2050294A1

公开(公告)日：2009-04-22

申请号：EP07723495.3

申请日：2007-03-20

Applicant: LUCENT TECHNOLOGIES INC.

Inventor： CASATI, Alessio ,  BENNETT, Andrew ,  PALAT, Sudeep, Kumar ,  TATESH, Said

IPC: H04Q7/38

CPC classification number: H04W36/0022

Abstract: A method is provided of transferring a call connection with a mobile terminal from a first network to a second network. The first network is capable of handling both circuit-switched and packet-switched modes of connection. The second network is capable of handling one of the packet-switched or circuit-switched modes of connection but not both. The terminal is capable of both packet-switched and circuit- switched call modes of connection. The method comprises the first network: identifying the location of the mobile terminal with respect to at least one of the networks, identifying the mobile terminal as being in a mode of connection not usable in the second network, instructing the mobile terminal to transfer the call connection to the other mode of connection, and transferring the call connection to the second network.

公开(公告)号：EP2119292A2

公开(公告)日：2009-11-18

申请号：EP07867871.1

申请日：2007-12-19

Applicant: LUCENT TECHNOLOGIES INC.

Inventor： CASATI, Alessio ,  DEMAREZ, Christophe ,  PALAT, Sudeep, Kumar ,  TATESH, Said

IPC: H04Q7/38

CPC classification number: H04W36/0022

Abstract: The present invention provides a method applicable to a mobile unit operating using Long Term Evolution (LTE) technology and having a single radio interface. The method controls a handover from a Voice over Internet Protocol (VoIP) call to a Circuit Switched (CS) call. The method comprises providing a CS call control message in a packet switched message, and routing the CS call control messages to a Mobile Switching Centre (MSC). Thereafter, a handover of the VoIP call to the CS call is initiated in response to receiving the call control message.

公开(公告)号：EP1999985A1

公开(公告)日：2008-12-10

申请号：EP07753155.6

申请日：2007-03-14

Applicant: Lucent Technologies Inc.

Inventor： CASATI, Alessio ,  PALAT, Sundeep, Kumar ,  TATESH, Said

IPC: H04Q7/38

CPC classification number: H04W60/04 ,  H04W24/02

Abstract: The present invention provides a method for assigning a tracking area to a mobile unit based upon a plurality of location update frequencies. The method may include determining, at the mobile unit, a tracking area associated with the mobile unit based on a plurality of location update frequencies.

公开(公告)号：EP1999984A1

公开(公告)日：2008-12-10

申请号：EP07753154.9

申请日：2007-03-14

Applicant: Lucent Technologies Inc.

Inventor： CASATI, Alessio ,  PALAT, Sudeep, Kumar ,  TATESH, Said

IPC: H04Q7/38

CPC classification number: H04W60/04 ,  H04W24/02 ,  H04W88/06

Abstract: The present invention provides a method for assigning a mobile unit to a tracking area based upon a location update frequency. The method includes selecting one of a technology-specific tracking area and a shared tracking area based on a location update frequency associated with a mobile unit.

公开(公告)号：EP2050294B1

公开(公告)日：2010-10-06

申请号：EP07723495.3

申请日：2007-03-20

Applicant: LUCENT TECHNOLOGIES INC.

Inventor： CASATI, Alessio ,  BENNETT, Andrew ,  PALAT, Sudeep, Kumar ,  TATESH, Said

IPC: H04W36/14

CPC classification number: H04W36/0022

Abstract: A method is provided of transferring a call connection with a mobile terminal from a first network to a second network. The first network is capable of handling both circuit-switched and packet-switched modes of connection. The second network is capable of handling one of the packet-switched or circuit-switched modes of connection but not both. The terminal is capable of both packet-switched and circuit- switched call modes of connection. The method comprises the first network: identifying the location of the mobile terminal with respect to at least one of the networks, identifying the mobile terminal as being in a mode of connection not usable in the second network, instructing the mobile terminal to transfer the call connection to the other mode of connection, and transferring the call connection to the second network.

公开(公告)号：EP2070290A1

公开(公告)日：2009-06-17

申请号：EP07801546.8

申请日：2007-08-06

Applicant: LUCENT TECHNOLOGIES INC.

Inventor： CASATI, Alessio ,  PALAT, Sudeep, Kumar ,  TATESH, Said

IPC: H04L29/06 ,  H04Q7/38

CPC classification number: H04W12/08 ,  H04L63/0428 ,  H04L63/068 ,  H04W12/02 ,  H04W12/04

Abstract: An example of the present invention is a method of transmitting encrypted user data to a mobile terminal in a wireless telecommunications network. The method comprises sending to the mobile terminal a data packet. The data packet comprises both an identifier of encryption information to used in recovering encrypted user data, and user data encrypted using said encryption information.

公开(公告)号：EP2055043A1

公开(公告)日：2009-05-06

申请号：EP07836363.7

申请日：2007-07-31

Applicant: LUCENT TECHNOLOGIES INC.

Inventor： CASATI, Alessio ,  PALAT, Sundeep, Kumar ,  TATESH, Said

IPC: H04L12/18

CPC classification number: H04L12/1877 ,  H04L12/189

Abstract: A multicast status availability indication from an anchor (24) is provided to a plurality of base nodes (22) that are part of a multicast group serviced by the anchor (24). The availability status indication in one example is sent autonomously by the anchor (24) independent of any inquiry or attempted setup of a new session with that anchor by a base mode (22). The base modes (22) maintain a candidate anchor set that includes information regarding currently available anchors for establishing new sessions, for example.

公开(公告)号：EP1183844B1

公开(公告)日：2007-11-07

申请号：EP00920883.6

申请日：2000-04-18

Applicant: Lucent Technologies Inc.

Inventor： CASATI, Alessio ,  PALAT, Sudeep Kumar ,  YAMINI, Hatef

IPC: H04L29/06 ,  H04Q7/22

CPC classification number: H04W60/04 ,  H04W36/0011 ,  H04W80/04

Abstract: In the GPRS when an MS moves from a former RA to a new RA, a method of supporting mobile Internet protocol characterized in that on receipt of a routing area update message from the MS, a mobile Internet protocol agent advertisement is sent only to that MS. The move may be inter-SGN or intro-SGN or may involve a change of RNC. The method allows efficient use of radio resources.

公开(公告)号：EP2119268A1

公开(公告)日：2009-11-18

申请号：EP08707090.0

申请日：2008-01-15

Applicant: LUCENT TECHNOLOGIES INC.

Inventor： PALAT, Sudeep Kumar ,  TATESH, Said ,  CASATI, Alessio ,  DEMAREZ, Christophe

IPC: H04Q7/24

CPC classification number: H04W60/04 ,  H04W8/02 ,  H04W48/18

Abstract: A method is provided of registering a mobile terminal in an area of overlapping cell coverage by first and second networks for wireless mobile telecommunications. The networks are of different types. The method comprises: storing an identifier of the mobile terminal; storing in a controller a first record of in which cell or group of cells the mobile terminal is located in the first network and a second record of in which cell or group of cells the mobile terminal is located in the second network; and providing the mobile terminal with information of both records and said identifier.