公开(公告)号：BR0307655A

公开(公告)日：2005-02-15

申请号：BR0307655

申请日：2003-02-12

Applicant: QUALCOMM INC

Inventor： CROCKETT DOUGLAS M ,  ROSEN ERIC C ,  MAGGENTI MARK

IPC: H04L12/56 ,  H04B7/26 ,  H04M3/56 ,  H04M7/00 ,  H04W4/08 ,  H04W76/02 ,  H04W76/04 ,  H04Q7/38 ,  H04M3/46

Abstract: A method and apparatus for joining a user to a call in a group communication network provides for receiving an indication from a user who wishes to initiate a group call and sending a request to a server to add the user to the group call if the group call is in progress. The method and apparatus also provides for announcing the group call to the user, receiving acknowledgement from the user who wishes to participate in the announced group call, and forwarding media to the user after its traffic channel is re-established. The method and apparatus also provides for a significant reduction in the actual total dormancy wakeup time and latency by exchanging group call signaling even when mobiles are dormant and no traffic channel is active.

公开(公告)号：HK1055050A1

公开(公告)日：2003-12-19

申请号：HK03107293

申请日：2003-10-10

Applicant: QUALCOMM INC

Inventor： MAGGENTI MARK ,  CROCKETT DOUGLAS M ,  ROSEN ERIC

IPC: H04L12/56 ,  H04B7/26 ,  H04L12/66 ,  H04L29/06 ,  H04W4/10 ,  H04W4/24 ,  H04W84/08

Abstract: A method for synchronizing encryption and decryption of a data frame in a communication network, the method comprising: encrypting a first data frame based on a first unique code in a first communication device, said first unique code being derived from a first sequential code; encapsulating said first encrypted data frame in a first transport frame, said first transport frame comprising a first portion and a second portion of said first sequential code; encrypting a second data frame based on a second unique code in the first communication device, said second unique code being derived from a second sequential code; encapsulating said second encrypted data frame in a second transport frame, said second transport frame comprising a first portion and a second portion of said second sequential code; and transmitting said first transport frame and said second transport frame to a second communication device, wherein said first portion of said first sequential code and said first portion of said second sequential code identify the same relative portions of said first and second sequential codes, and said second portion of said second sequential code represents a successive relative portion with respect to said second portion of said first sequential code.

公开(公告)号：CA2476197A1

公开(公告)日：2003-08-21

申请号：CA2476197

申请日：2003-02-12

Applicant: QUALCOMM INC

Inventor： MAGGENTI MARK ,  CROCKETT DOUGLAS M ,  ROSEN ERIC C

IPC: H04L12/56 ,  H04B7/26 ,  H04Q1/00 ,  H04W4/10 ,  H04Q7/38

Abstract: A method and apparatus for initiating a group call in a group communication network provides for receiving a request for initiating a group call based o n a member and initiating the group call based on the received member list. Th e method and apparatus also provides for announcing the group call to each member in the member list, receiving acknowledgement from a member who wishe s to participate in the group call, and forwarding media to the member after i ts traffic channel is re-established. The method and apparatus also provides fo r a significant reduction in the actual total dormancy wakeup time and latency by exchanging group call signaling even when mobiles are dormant and no traffic channel is active.

公开(公告)号：CA2475730A1

公开(公告)日：2003-08-21

申请号：CA2475730

申请日：2003-02-12

Applicant: QUALCOMM INC

Inventor： ROSEN ERIC C ,  MAGGENTI MARK ,  CROCKETT DOUGLAS M

IPC: H04B7/26 ,  H04M3/56 ,  H04M7/00 ,  H04W4/10 ,  H04W48/02 ,  H04W76/06 ,  H04Q7/28

Abstract: A method and apparatus for terminating a member from a group call in a group communication network provides for receiving an indication from a user who wishes to terminate participation in a group call and sending a request to a server to terminate the user from the group call. The method and apparatus further provides for the server to receive the request for terminating a user from a group call, terminate the user from the group call, and send a response indicating that the user is terminated from the group call.

公开(公告)号：BR0108901A

公开(公告)日：2003-01-07

申请号：BR0108901

申请日：2001-03-02

Applicant: QUALCOMM INC

Inventor： MAGGENTI MARK ,  CROCKETT DOUGLAS M ,  ROSEN ERIC

IPC: H04L12/56 ,  H04B7/26 ,  H04L12/66 ,  H04L29/06 ,  H04W4/10 ,  H04W4/24 ,  H04W84/08 ,  H04L12/00

Abstract: A method for synchronizing encryption and decryption of a data frame in a communication network, the method comprising: encrypting a first data frame based on a first unique code in a first communication device, said first unique code being derived from a first sequential code; encapsulating said first encrypted data frame in a first transport frame, said first transport frame comprising a first portion and a second portion of said first sequential code; encrypting a second data frame based on a second unique code in the first communication device, said second unique code being derived from a second sequential code; encapsulating said second encrypted data frame in a second transport frame, said second transport frame comprising a first portion and a second portion of said second sequential code; and transmitting said first transport frame and said second transport frame to a second communication device, wherein said first portion of said first sequential code and said first portion of said second sequential code identify the same relative portions of said first and second sequential codes, and said second portion of said second sequential code represents a successive relative portion with respect to said second portion of said first sequential code.

公开(公告)号：CA2859158A1

公开(公告)日：2001-09-13

申请号：CA2859158

申请日：2001-03-02

Applicant: QUALCOMM INC

Inventor： MAGGENTI MARK ,  CROCKETT DOUGLAS M ,  ROSEN ERIC

IPC: H04L12/56 ,  H04W56/00 ,  H04B7/26 ,  H04L12/66 ,  H04L29/06 ,  H04W4/10 ,  H04W4/24 ,  H04W12/02 ,  H04W80/06 ,  H04W84/08

Abstract: A push-to-talk communication device to participate in a group communication net (100) is claimed. The group communication net (100) comprises a controller (104) to manage the group communication net (100) and interface with the push-to-talk communication devices (108, 112 and 116). A processor converts information signals into packet data suitable for transmission over a distributed network. The processor may also have identification information, and updates its identification information when its current identification information has or is about to change. The processor then transmits its new identification information to the controller (104). The push-to-talk devices (108, 112 and 116) also comprise a transmitter to transmit packet data through a first channel to the controller. A receiver receives packet data through a second channel from the controller. The push-to-talk devices (108, 112 and 116) also comprise a user activated mechanism to activate the transmitter when a user of the communication device wishes to transmit packet data to the controller

公开(公告)号：CA2778246A1

公开(公告)日：2001-09-13

申请号：CA2778246

申请日：2001-03-02

Applicant: QUALCOMM INC

Inventor： MAGGENTI MARK ,  CROCKETT DOUGLAS M ,  ROSEN ERIC

IPC: H04W4/10 ,  H04L12/18 ,  H04L12/56 ,  H04L47/43 ,  H04M3/56 ,  H04M7/00 ,  H04W12/06 ,  H04W28/10 ,  H04W76/04 ,  H04W80/02

Abstract: A system and method for providing group communication services. Each of a plurality of communication devices coverts information signals into data packets suitable for transmission over a data network, such as the Internet. The data packets are transmitted through the data network to a communications manager. The communications manager acts as a configurable switch, allowing communications from any communication device to be routed to the plurality of communication devices. The communications manager further allows users of other communication systems and devices to participate in group communications with each other.

公开(公告)号：CA2401106A1

公开(公告)日：2001-09-13

申请号：CA2401106

申请日：2001-03-02

Applicant: QUALCOMM INC

Inventor： ROSEN ERIC ,  MAGGENTI MARK ,  CROCKETT DOUGLAS M

IPC: H04L12/56 ,  H04B7/26 ,  H04L12/66 ,  H04L29/06 ,  H04W4/10 ,  H04W4/24 ,  H04W84/08 ,  H04Q7/28

Abstract: A push-to-talk communication device to participate in a group communication net (100) is claimed. The group communication net (100) comprises a controll er (104) to manage the group communication net (100) and interface with the pus h- to-talk communication devices (108, 112 and 116). A processor converts information signals into packet data suitable for transmission over a distributed network. The processor may also have identification information, and updates its identification information when its current identification information has or is about to change. The processor then transmits its new identification information to the controller (104). The push-to-talk devices (108, 112 and 116) also comprise a transmitter to transmit packet data throu gh a first channel to the controller. A receiver receives packet data through a second channel from the controller. The push-to-talk devices (108, 112 and 116) also comprise a user activated mechanism to activate the transmitter wh en a user of the communication device wishes to transmit packet data to the controller.

公开(公告)号：CA2813651C

公开(公告)日：2014-07-08

申请号：CA2813651

申请日：2001-03-02

Applicant: QUALCOMM INC

Inventor： MAGGENTI MARK ,  CROCKETT DOUGLAS M ,  ROSEN ERIC

IPC: H04L12/56 ,  H04L29/04 ,  H04B7/26 ,  H04L12/66 ,  H04L29/06 ,  H04W4/10 ,  H04W4/24 ,  H04W72/12 ,  H04W84/08

Abstract: A push-to-talk communication device to participate in a group communication net (100) is claimed. The group communication net (100) comprises a controller (104) to manage the group communication net (100) and interface with the push-to-talk communication devices (108, 112 and 116). A processor converts information signals into packet data suitable for transmission over a distributed network. The processor may also have identification information, and updates its identification information when its current identification information has or is about to change. The processor then transmits its new identification information to the controller (104). The push-to-talk devices (108, 112 and 116) also comprise a transmitter to transmit packet data through a first channel to the controller. A receiver receives packet data through a second channel from the controller. The push-to- talk devices (108, 112 and 116) also comprise a user activated mechanism to activate the transmitter when a user of the communication device wishes to transmit packet data to the controller.

公开(公告)号：ES2396683T3

公开(公告)日：2013-02-25

申请号：ES10182516

申请日：2001-03-02

Applicant: QUALCOMM INC

Inventor： MAGGENTI MARK ,  CROCKETT DOUGLAS M ,  ROSEN ERIC

IPC: H04L12/56 ,  H04W12/08 ,  H04B7/26 ,  H04L12/66 ,  H04L29/06 ,  H04W4/10 ,  H04W4/24 ,  H04W84/08

Abstract: Un procedimiento para proporcionar seguridad en una red de comunicación grupal, comprendiendo el procedimiento:recibir una clave de cifrado en un dispositivo de comunicación; cifrar en el dispositivo de comunicación el tráfico de medios para su transmisión a un controlador, usando la clave decifrado recibida, siendo dirigido el tráfico de medios cifrado a otro dispositivo de comunicación; y comunicar el tráfico de medios cifrado al controlador, incluyendo la comunicación la comunicación inalámbrica;caracterizado por: incluir el tráfico de medios cifrado cabeceras adicionales que permiten al dispositivo de comunicación sincronizar elproceso de cifrado / descifrado; sincronizarse con una transmisión ya en marcha; y confirmar que el remitente y elreceptor están usando idénticas claves de cifrado de tráfico; y en el cual, si el dispositivo de comunicación recibe tráfico de medios que no está cifrado por una red para la cual estáconfigurado para cifrar, o si el tráfico no es descifrado correctamente, el dispositivo de comunicación señaliza unaalerta y enmudece el tráfico de medios.