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    Communication system communication unit and method for performing encrypted communication
    13.
    发明专利
    Communication system communication unit and method for performing encrypted communication 未知

    公开(公告)号：GB2407000B

    公开(公告)日：2006-02-08

    申请号：GB0323608

    申请日：2003-10-09

    Applicant: MOTOROLA INC

    Inventor： JOHUR JASON J ,  BUCHWINKLER HELMUT ,  CHATER-LEA DAVID JOHN ,  SOWA HANS C

    IPC: H04L29/06 ,  H04W12/00

    Abstract: A method (300) for performing encrypted communication in a wireless communication system having a centralised network operably coupled to a serving communication unit that wirelessly communicates with a plurality of remote communication units. The method comprises the steps of transmitting an encrypted message, preferably a registration message, from one of the plurality of remote communication units to the serving communication unit where the serving communication unit does not contain a key to decrypt the encrypted message. The serving communication unit (122) stores (335) the encrypted message and retrieves (330) a key from the centralised network to facilitate decryption of the encrypted message. A communication system and associated communication units are also described. In storing encrypted messages such as registration messages, coupled with a key retrieval mechanism, mobile subscriber units are able to perform encrypted registration without either the subscriber unit or the system knowing where or when the encrypted registration request will be made.

    Keystream synchronisation by associating a single synchronisation indicator with a plurality of encryption portions
    15.
    发明专利
    Keystream synchronisation by associating a single synchronisation indicator with a plurality of encryption portions 未知

    公开(公告)号：GB2402025A

    公开(公告)日：2004-11-24

    申请号：GB0311572

    申请日：2003-05-19

    Applicant: MOTOROLA INC

    Inventor： CHATER-LEA DAVID JOHN

    IPC: H04L9/12

    Abstract: A processor for producing an encryption keystream to encrypt information to be communicated from a first location to a second location, the processor comprising a keystream generator operable to generate a keystream; and a divider operable to divide the keystream into equally sized blocks each of which is to be allocated to encryption or decryption or synchronisation or includes a portion to be discarded, and wherein each of the blocks is sub-divided into portions which are to be allocated to encryption or decryption, synchronisation or discarding and wherein each block includes a plurality of encryption or decryption portions and only a single synchronisation portion.

    Keystream synchronisation by associating a single synchronisation indicator with a plurality of encryption portions
    16.
    发明专利
    Keystream synchronisation by associating a single synchronisation indicator with a plurality of encryption portions 未知

    公开(公告)号：GB2402024A

    公开(公告)日：2004-11-24

    申请号：GB0311571

    申请日：2003-05-19

    Applicant: MOTOROLA INC

    Inventor： CHATER-LEA DAVID JOHN

    IPC: H04L9/12

    Abstract: A processor for encrypting or decrypting information to be communicated from a first location to a second location, the processor being operable in at least two modes including (i) a first mode wherein information is encrypted by an encryption portion of a keystream and a synchronisation indicator is generated in association with each encryption portion and (ii) a second mode wherein information is encrypted by a plurality of encryption portions and a single synchronisation indicator is generated in association with each plurality of encryption portions.

    Apparatus and Method for Controlling a Wireless Communications Terminal
    18.
    发明专利
    Apparatus and Method for Controlling a Wireless Communications Terminal 未知

    公开(公告)号：GB2445396A

    公开(公告)日：2008-07-09

    申请号：GB0700116

    申请日：2007-01-04

    Applicant: MOTOROLA INC

    Inventor： CHATER-LEA DAVID JOHN ,  WEALLEANS MARK J

    IPC: H04M1/725 ,  H04L9/00 ,  H04M1/00 ,  H04Q7/00

    Abstract: An article (105) to be visibly worn or to be visibly carried by a user has, incorporated in the article, a controller (103) for controlling a covert wireless communication terminal (101). The controller includes a wireless transceiver (403) operable to provide wireless communication with a wireless communication terminal (101) to remotely control operation of the wireless communication terminal. The article has an appearance indicating a purpose other than for incorporating the controller. The article thereby disguises incorporation of the controller in the article. Also described is a system (100) incorporating the article (105) and the terminal (101) and a method of use of the system.

    Mobile communication system and controller, mobile station and method for use therein
    19.
    发明专利
    Mobile communication system and controller, mobile station and method for use therein 未知

    公开(公告)号：GB2421875B

    公开(公告)日：2007-06-06

    申请号：GB0428465

    申请日：2004-12-31

    Applicant: MOTOROLA INC

    Inventor： CHATER-LEA DAVID JOHN ,  LUCAS RICHARD C

    IPC: H04B7/26 ,  H04B7/14 ,  H04W36/08 ,  H04W36/32 ,  H04W84/00

    Abstract: A mobile communication system is described. The system has an infrastructure that includes base stations and has mobile stations, a mobile terminal and a mobile controller. Each mobile station is operable to communicate with one of the base stations. The mobile terminal is coupled to first and second mobile stations to provide a communication link to at least one of the base stations. The mobile controller sends instruction messages to the mobile stations regarding connectivity with the base stations. The mobile terminal, the mobile controller and the first and second mobile stations are carried on a moving object. The mobile controller makes decisions and issues instructions to the mobile stations relating to the base station by which they should each be served with to maintain a communication link between the mobile terminal and a serving base station via at least one of the mobile stations.

    Transferring Home Location Register (HLR) data between nodes in a wireless, ad-hoc network
    20.
    发明专利
    Transferring Home Location Register (HLR) data between nodes in a wireless, ad-hoc network 未知

    公开(公告)号：GB2413731A

    公开(公告)日：2005-11-02

    申请号：GB0409473

    申请日：2004-04-28

    Applicant: MOTOROLA INC

    Inventor： THEISEN NANNA SVANE ,  FRANDSEN SVEND ,  CHATER-LEA DAVID JOHN ,  PETERSEN STEEN

    IPC: H04B7/00 ,  H04L12/28 ,  H04L12/66 ,  H04M3/42 ,  H04N7/16 ,  H04N7/173 ,  H04W8/04 ,  H04W8/06 ,  H04W8/12 ,  H04Q7/28 ,  H04Q7/38

    Abstract: A method of controlling location information of subscribers 210, 212, 222 in a wireless, ad-hoc communications network 200. The network 200 comprises a plurality of nodes (base stations) 204, 216, 226 wherein each of the nodes has a Visitor Location Register (VLR) 208, 220, 230 and at least a portion of the nodes are provided with Home Location Registers (HLRs) 206, 218 228. When an operation of a first node 216 is to be reconfigured, for example, due to the addition of a new node or disconnection or movement of the first node 216, at least a part of the records from a first HLR 218 assigned to the first node 216 is transferred to at least one of the other nodes 226 of the network 200. The transfer is preferably controlled by a control unit which selects the target node(s) 226 and creates a back-up copy of the first HLR 218 which can be used if an error occurs during the transfer. Depending on circumstances, all or only part of the HLR records can be transferred and the transferred records can be assigned to a new HLR at the target node(s), which may or may not already have a HLR, or merged with records in a HLR already at the target node(s).

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