METHOD AND APPARATUS FOR PERFORMING ACQUISITION IN POWER SAVE MODE FOR WIRELESS COMMUNICATION SYSTEMS

Techniques to efficiently attempt acquisition of a packet data system (e.g., an IS-856 system). If a terminal has acquired one or more channels in a voice/data system (e.g., an IS-2000 system), then it can attempt acquisition on channels in the packet data system that are co-located with the acquire...

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1. Verfasser: THUNYACHATE EKVETCHAVIT
Format: Patent
Sprache:eng ; spa
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Zusammenfassung:Techniques to efficiently attempt acquisition of a packet data system (e.g., an IS-856 system). If a terminal has acquired one or more channels in a voice/data system (e.g., an IS-2000 system), then it can attempt acquisition on channels in the packet data system that are co-located with the acquired channels in the voice/data system. Multiple acquisition modes may be used, and on-going acquisition attempts on the co-located channels may be performed using one acquisition mode at a time in order to reduce power consumption. Acquisition attempts may be performed in a "ping-pong" manner to improve the likelihood of acquisition. For a ping-pong search, an acquisition attempt is made on the most recently acquired channel prior to an acquisition attempt on each of the remaining channels. Received signal strength estimates may also be obtained for selected channels and may be used to determine whether or not to attempt acquisition on these channels. Tecnicas para intentar eficazmente la adquisicion de un sistema de datos de paquete (por ejemplo, un sistema de IS-856). Si una terminal ha adquirido uno o mas canales en un sistema de voz/datos (por ejemplo, un sistema IS-2000), entonces puede intentar la adquisicion en canales en el sistema de datos de paquete que se co-localizan con los canales adquiridos en el sistema de voz/datos. Pueden utilizarse multiples modos de adquisicion, y los intentos de adquisicion en curso por los canales co-localizados puede realizarse utilizando un modo de adquisicion a la vez con objeto de reducir el consumo de potencia. Los intentos de adquisicion pueden realizarse a manera de "ping-pong" para mejorar la probabilidad de adquisicion. Para una busqueda de ping-pong, se realiza un intento de adquisicion en el canal mas recientemente adquirido antes de un intento de adquisicion en cada uno de los canales restantes. Los calculos de resistencia de la senal recibida tambien pueden obtenerse para los canales seleccionados y pueden utilizarse para determinar si intentan o no la adquisicion por estos canales.