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    DISCONTINUOUS TRANSMISSION (DTX) FRAME DETECTION IN WIRELESS COMMUNICATION SYSTEMS
    61.
    发明公开
    DISCONTINUOUS TRANSMISSION (DTX) FRAME DETECTION IN WIRELESS COMMUNICATION SYSTEMS 有权
    检测DTX（不连续传输）的 - FRAME IN WIRELESS SYSTEMS

    公开(公告)号：EP1570699A2

    公开(公告)日：2005-09-07

    申请号：EP03796971.4

    申请日：2003-12-10

    Applicant: Qualcomm, Incorporated

    Inventor： CHEN, Qingxin ,  PATEL, Shimman

    IPC: H04Q7/38

    CPC classification number: H04L1/0061 ,  H04L1/0072 ,  H04L1/20 ,  H04L1/201

    Abstract: Techniques to detect for DTX frames in a 'primary' transmission that may be sent in a non-continuous manner using a 'secondary' transmission that is sent during periods of no transmission for the primary transmission. The primary and secondary transmissions may be the ones sent on the F-DCCH and Forward Power Control Subchannel, respectively, in an IS-2000 system. In one method, a determination is first made whether or not a frame received for the primary transmission in a particular frame interval is a good frame (e.g., based on CRC). If the received frame is not a good frame, then a determination is next made whether the received frame is a DTX frame or an erased frame based on a number of metrics determined for the primary and secondary transmissions. The metrics may include symbol error rate of the received frame, secondary transmission (e.g., PC bit) energy, and received frame energy.

    METHOD AND APPARATUS FOR PERFORMING A CANDIDATE FREQUENCY SEARCH IN A WIRELESS COMMUNICATION SYSTEM
    62.
    发明公开
    METHOD AND APPARATUS FOR PERFORMING A CANDIDATE FREQUENCY SEARCH IN A WIRELESS COMMUNICATION SYSTEM 有权
    方法用于进行候选频率搜索在无线通信系统

    公开(公告)号：EP1321009A2

    公开(公告)日：2003-06-25

    申请号：EP01973609.9

    申请日：2001-09-27

    Applicant: QUALCOMM INCORPORATED

    Inventor： CHEN, Qingxin ,  ACHOUR, Baaziz

    IPC: H04Q7/38

    CPC classification number: H04W36/0088

    Abstract: A method and apparatus for decreasing the probability of dropping a call during a hard handoff procedure in a wireless communication system (FIG. 1). The two primary functions of the candidature frequency (CF) search method and apparatus of the present invention are to detect the strong pilots (908-916) on a candidate frequency in the area of the mobile station and to maintain adequate service quality during the CF search (FIG. 8).

    TECHNIQUES FOR MOBILITY FOR DUAL SUBSCRIBER DUAL ACTIVE USER EQUIPMENT
    63.
    发明公开
    TECHNIQUES FOR MOBILITY FOR DUAL SUBSCRIBER DUAL ACTIVE USER EQUIPMENT 审中-公开

    公开(公告)号：EP4486049A3

    公开(公告)日：2025-04-02

    申请号：EP24212084.8

    申请日：2022-04-15

    Applicant: QUALCOMM Incorporated

    Inventor： AGRAWAL, Mona ,  SANTHANAM, Arvind Vardarajan ,  REJ, Rishav ,  CHEN, Qingxin ,  SHAHIDI, Reza ,  LEE, Kuo-Chun

    IPC: H04W76/15

    Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may establish a first call associated with a first subscriber of the UE. The UE may establish a second call associated with a second subscriber of the UE, wherein the first subscriber and the second subscriber are active contemporaneously, and wherein the first call and the second call are associated with a first radio access technology (RAT). The UE may identify a mobility event that associated with an interruption to at least one of the first call and the second call, the mobility event involving switching the first subscriber to a second RAT. The UE may perform a mitigation action. Numerous other aspects are described.

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