公开(公告)号：AT406724T

公开(公告)日：2008-09-15

申请号：AT04752267

申请日：2004-05-14

Applicant: QUALCOMM INC

Inventor： QUICK ROY ,  HSU RAYMOND ,  CANOY MICHAEL-DAVID

IPC: H04L1/18 ,  H04L1/00 ,  H04W4/06 ,  H04W28/04

Abstract: Systems and methods for systems and methods for reliably broadcasting content to a plurality of users and facilitating distribution of portions of the broadcast content that either were not received by particular users, or were received with errors. In one embodiment, a wireless communication system is configured to broadcast content from a content source to a plurality of user devices. The content source is configured to provide the content to a base station. The base station parses the content into a plurality of segments and associates sequential identifiers with each of the segments. The content is then broadcast to each of the user devices. An identifier of an alternative data source is also provided to the user devices. When a mobile station receives the segments, it examines the segment identifiers to identify missing segments. The segments are then retrieved from the alternative data source identified by the base station.

公开(公告)号：ES2675292T3

公开(公告)日：2018-07-10

申请号：ES04781684

申请日：2004-08-18

Applicant: QUALCOMM INC

Inventor： BENDER PAUL ,  QUICK ROY ,  AGASHE PARAG

IPC: H04L12/14 ,  H04W4/24 ,  H04L12/18 ,  H04L29/06 ,  H04M15/00 ,  H04N7/167 ,  H04N7/173 ,  H04N21/2347 ,  H04N21/2543 ,  H04N21/4405 ,  H04N21/442 ,  H04N21/61 ,  H04N21/658

Abstract: Un procedimiento para servicios de radiodifusión-multidifusión en un sistema de comunicaciones, que comprende: recibir (310) un número que cambia periódicamente; recibir (310) una primera clave con un identificador para indicar un canal de servicio que tiene contenido asociado con la misma, siendo la primera clave una clave de acceso de radiodifusión; generar (320) en un terminal (105) al menos una segunda clave utilizando al menos dicho número que cambia periódicamente y dicha primera clave, con la al menos una segunda clave configurada para permitir el acceso al contenido asociado con la misma; y contar (320) en el terminal la cantidad generada de segundas claves para producir un valor de recuento para la contabilidad del contenido visualizado en un terminal.

公开(公告)号：AT376730T

公开(公告)日：2007-11-15

申请号：AT00975214

申请日：2000-09-29

Applicant: QUALCOMM INC

Inventor： REZAIIFAR RAMIN ,  QUICK ROY ,  WILLIAMSON PAUL ,  WANG JUN ,  TIEDEMANN EDWARD

IPC: H04L9/08 ,  H04L9/18 ,  G06F1/04 ,  G06F1/06 ,  G06F1/08 ,  G06F1/12 ,  G06F13/42 ,  G06F21/00 ,  H04K1/00 ,  H04L1/00 ,  H04L5/00 ,  H04L7/00 ,  H04L9/00 ,  H04L9/12 ,  H04L9/32 ,  H04L12/22 ,  H04L29/06 ,  H04Q7/38 ,  H04W12/00 ,  H04W12/02 ,  H04W12/06 ,  H04W12/10 ,  H04W12/12

Abstract: Method and apparatus for encrypting transmission traffic at separate protocol layers L1, L2, and L3 so that separate encryption elements can be assigned to separate types of transmission traffic, which allows the implementation of different levels of encryption according to service requirements. Encryption elements use variable value inputs, called crypto-syncs, along with semi-permanent encryption keys to protect from replay attacks from rogue mobile stations. Since crypto-sync values vary, a method for synchronizing crypto-syncs at the mobile station and base station is also presented.

公开(公告)号：HUE039361T2

公开(公告)日：2018-12-28

申请号：HUE04781684

申请日：2004-08-18

Applicant: QUALCOMM INC

Inventor： BENDER PAUL ,  QUICK ROY ,  AGASHE PARAG

IPC: H04L12/14 ,  H04W4/24 ,  H04L12/18 ,  H04L29/06 ,  H04M15/00 ,  H04N21/61

公开(公告)号：AT408319T

公开(公告)日：2008-09-15

申请号：AT02789405

申请日：2002-10-31

Applicant: QUALCOMM INC

Inventor： QUICK ROY ,  HO SAI

IPC: H04L9/08 ,  H04L9/06 ,  H04L29/06 ,  H04W12/00 ,  H04W12/04

Abstract: In a communication system (100), a method and apparatus provides for message integrity regardless of the operating version of an authentication center (198) or an interface (197) between the authentication center (198) and a mobile switching center (199). The method and apparatus include generating a cellular message encryption algorithm (CMEA) key, and generating a CMEA-key-derived integrity key (CIK) based on the CMEA key for message integrity between a mobile station and a base station. The mobile station transmits a registration message to the base station, and determines an operating version of the authentication center (198) in communication with the base station based on whether the mobile station receives a registration accepted order or some elements of an authentication vector from the base station. The CIK is generated based on the CMEA key, if the mobile station receives a valid registration accepted order from the base station.