TECHNIQUES FOR ACCESSING A WIRELESS COMMUNICATION SYSTEM WITH TUNE-AWAY CAPABILITY

    公开(公告)号:CA2596806A1

    公开(公告)日:2006-08-10

    申请号:CA2596806

    申请日:2006-01-31

    Applicant: QUALCOMM INC

    Abstract: To access a first communication system, a terminal determines a transmission time for an access probe, an expected response time from the system, and a protected time interval based on the transmission time and/or expected response time. The terminal determines a starting time for sending the access probe such that the protected time interval does not overlap a tune-away interval in which the terminal is to monitor anther frequency/air-interface. This starting time may be set initially to the end of a prior access probe plus a pseudo-random wait duration and may be advanced forward or moved backward in time, if needed, by a time duration selected such that the protected time interval does not overlap the tune-away interval.

    HDLC HARDWARE ACCELERATOR
    15.
    发明专利

    公开(公告)号:CA2475591A1

    公开(公告)日:2003-09-04

    申请号:CA2475591

    申请日:2003-02-27

    Applicant: QUALCOMM INC

    Abstract: An HDLC accelerator includes a deframer and framer to respectively accelerat e the deframing and framing processes for PPP packets. The deframer includes a n input interface unit, a detection unit, a conversion unit, and an output interface unit. The input interface unit receives a packet of data to be deframed. The detection unit evaluates each data byte to detect for special bytes (e.g., flag, escape, and invalid bytes). The conversion unit deframes the received data by removing flag and escape bytes, "un-escaping" the data byte following each escape byte, providing a header word for each flag byte, and checking each deframed packet based on a frame check sequence (FCS) valu e associated with the packet. The output interface unit provides deframed data and may further perform byte alignment in providing the deframed data. A sta te control unit provides control signals indicative of specific tasks to be performed for deframing.

    METHOD FOR DETERMINING 1XEV-DO SYSTEM AVAILABILITY FOR PACKET DATA CALL ORIGINATION DURING HYBRID OPERATION
    16.
    发明申请
    METHOD FOR DETERMINING 1XEV-DO SYSTEM AVAILABILITY FOR PACKET DATA CALL ORIGINATION DURING HYBRID OPERATION 审中-公开
    用于确定混合操作期间分组数据呼叫初始化的1XEV-DO系统可用性的方法

    公开(公告)号:WO2004102995A2

    公开(公告)日:2004-11-25

    申请号:PCT/US2004014454

    申请日:2004-05-07

    CPC classification number: H04W48/18 H04W88/06 H04W88/10

    Abstract: A system and method for determining 1xEV-DO availability for a packet data call in a wireless device is presented. When the wireless device receives a request to initiate a packet data call, the device determines if it currently has access to a preferred 1xEV-DO channel. The determination can be made by consulting a 1xEV-DO availability list stored in persistent memory on the wireless device. If available, the wireless device originates the packet data call on the 1xEV-DO channel. If the device is using a CDMA system that has 1xEV-DO channels but the availability or usability of those channels are unknown, the device polls the signal strength on the 1xEV-DO channels to determine the best 1xEV-DO channel to use for the packet data call. If no 1xEV-DO channel is available or if none of the available 1xEV-DO channels are usable, then the device originates the packet data call on a CDMA channel.

    Abstract translation: 提出了一种用于确定无线设备中的分组数据呼叫的1xEV-DO可用性的系统和方法。 当无线设备接收到发起分组数据呼叫的请求时,该设备确定其当前是否可以访问优选的1xEV-DO信道。 可以通过咨询存储在无线设备上的持久存储器中的1xEV-DO可用性列表来进行确定。 如果可用,无线设备在1xEV-DO信道上发起分组数据呼叫。 如果设备正在使用具有1xEV-DO信道的CDMA系统,但是这些信道的可用性或可用性是未知的,则设备轮询1xEV-DO信道上的信号强度,以确定用于分组的最佳1xEV-DO信道 数据呼叫。 如果没有1xEV-DO信道可用,或者如果没有可用的1xEV-DO信道可用,则设备在CDMA信道上发起分组数据呼叫。

    METHOD AND APPARATUS FOR PERFORMING ACQUISITION IN POWER SAVE MODE FOR WIRELESS COMMUNICATION SYSTEMS
    17.
    发明申请
    METHOD AND APPARATUS FOR PERFORMING ACQUISITION IN POWER SAVE MODE FOR WIRELESS COMMUNICATION SYSTEMS 审中-公开
    用于无线通信系统节电模式采集的方法和装置

    公开(公告)号:WO2004043128A3

    公开(公告)日:2005-02-03

    申请号:PCT/US0334502

    申请日:2003-10-29

    Applicant: QUALCOMM INC

    CPC classification number: H04W48/18 H04W88/06 Y02D70/00 Y02D70/1224

    Abstract: 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.

    Abstract translation: 有效地尝试采集分组数据系统(例如,IS-856系统)的技术。 如果终端已经在语音/数据系统(例如,IS-2000系统)中获取了一个或多个信道,则它可以尝试在分组数据系统中与所获取的信道在与语音/ 数据系统 可以使用多个采集模式,并且可以一次使用一个采集模式来执行同位置信道上的持续采集尝试,以便降低功耗。 收购尝试可以以“乒乓”方式进行,以提高获取的可能性。 对于乒乓搜索,在对每个剩余通道进行获取尝试之前,在最近获取的通道上进行采集尝试。 也可以对所选择的信道获得接收的信号强度估计,并且可以用于确定是否尝试在这些信道上进行采集。

    ARBITRATION OF RESOURCES AT A WIRELESS DEVICE AMONG CONTENDING APPLICATIONS
    18.
    发明申请
    ARBITRATION OF RESOURCES AT A WIRELESS DEVICE AMONG CONTENDING APPLICATIONS 审中-公开
    在有针对性的应用中,无线设备资源的仲裁

    公开(公告)号:WO2006119471A3

    公开(公告)日:2007-05-31

    申请号:PCT/US2006017298

    申请日:2006-05-04

    CPC classification number: G06F9/52 H04W28/16

    Abstract: Multiple applications sharing common resources are arbitrated such that failures resulting from unavailable resources can be avoided. Whenever an application (e.g., a data application) desires to perform an operation (e.g., PPP resynchronization) that requires the use of a shared resource (e.g., an RF receiver), a determination is made as to whether that resource is available. The operation may be delayed while the resource is unavailable. The application may be assigned the resource if it is available or becomes available and may then start the operation. The resource is locked while the operation is pending to avoid assignment to another application. The resource arbitration allows applications to complete their operations without encountering failures due to other applications taking over the resources.

    Abstract translation: 仲裁共享资源的多个应用程序,从而可以避免由不可用的资源引起的故障。 每当应用(例如,数据应用)期望执行需要使用共享资源(例如,RF接收机)的操作(例如,PPP重新同步))时,确定该资源是否可用。 当资源不可用时,操作可能会延迟。 如果应用程序可用或可用,则可以为该应用程序分配资源,然后可以开始该操作。 当操作正在等待以避免分配给另一个应用程序时,资源被锁定。 资源仲裁允许应用程序完成其操作,而不会因其他应用程序接管资源而遇到故障。

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