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특허 상세정보

MyON담기
내보내기 페이스북 공유 카카오톡 공유

Signaling for wireless communications

특허상세정보
국가/구분 United States(US) Patent 등록
국제특허분류(IPC7판) H04W-004/00    H04W-072/04    H04L-001/16    H04L-007/06    H04L-025/14    H04Q-011/04    H04W-052/32    H04L-027/26    H04W-008/00    H04W-028/04    H04W-048/08    H04W-052/16    H04W-052/50    H04W-074/04    H04W-076/04    H04W-084/14   
미국특허분류(USC) 370/329; 370/252; 370/315; 370/349; 370/522
출원번호 US-0751608 (2013-01-28)
등록번호 US-9014118 (2015-04-21)
발명자 / 주소
출원인 / 주소
대리인 / 주소
    Blakely, Sokoloff, Taylor & Zafman LLP
인용정보 피인용 횟수 : 4  인용 특허 : 407
초록
▼

A communication system, such as a wireless CDMA system, detects markers with fewer errors by having field units transmit the markers at different power levels (e.g., 9 dB for one marker and 11 dB for another marker). The difference in power levels of the markers allows the base station to identify the request markers using alternative criteria with a low probability of error, where the alternative criteria may include comparing the markers to respective energy level thresholds, monitoring occupancy of time slots, occupancy of mutually exclusive code chan...

대표
청구항
▼

1. A field unit comprising: at least one processor configured to transmit a heartbeat signal having one of a plurality of formats; wherein the heartbeat signal is transmitted in response to the field unit not having an allocation of traffic data resources to maintain timing and power control and as an indication of presence within a network, wherein detection of the signal to maintain timing and power control occurs at a rate that is fast enough to track the slew of the timing of the code channel due to physical movement of multi-path structure change re...

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