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Methods and apparatus for waveform design and signaling for energy harvesting

專利號(hào)
US12133255B2
公開日期
2024-10-29
申請(qǐng)人
InterDigital Patent Holdings, Inc.（US DE Wilmingto）
發(fā)明人
Hussain Elkotby; Anantharaman Balasubramanian; Marian Rudolf; Tanbir Haque; Patrick Cabrol; Ravikumar Pragada
IPC分類
H04W74/00; H02J50/00; H02J50/20; H02J50/40; H04L47/26; H04W28/02
技術(shù)領(lǐng)域
wtru,eh,wtrus,or,may,ze,in,be,harvesting,102c
地域： DE DE Wilmington

摘要

A method implemented in a wireless transmit/receive unit (WTRU) for wireless communications includes receiving a signal sequence from a base station (BS) and generating a channel quality indicator (CQI) indication based on the signal, transmitting the CQI indication to the BS, receiving a first control message from the BS comprising configuration information, wherein the configuration information includes information elements for configuring CQI subgroups, determining a CQI subgroup identifier (ID) based on the information elements included in the received first control message, and transmitting an energy harvesting feedback using at least one resource associated with the CQI subgroup ID.

說(shuō)明書

  • The carrier is originated from the eNB/gNB and backscattered signal is also received by the BS.
  • The carrier is originated from the eNB/gNB and backscattered signal is received by the gateway.
  • The carrier is originated from the gateway and backscattered signal is also received by the gateway.

    • For the three described scenarios, assuming the EH gateway is closer to the EH-WTRU than the serving BS, the feedback link using the third scenario may be the best, the first scenario may be the worst, and the second scenario may be somewhere in between.

    In order for the serving cell to efficiently allocate time/frequency/power resources for the feedback transmissions of EH WTRU(s), coordination between the BS and served EH WTRU(s) is necessary. Otherwise, the BS will have to allocate resources accommodating the worst-case scenario under its coverage, which might lead to unnecessary loss or time, frequency, and/or power resources.

    In one method, the BS may send a known signal/sequence that can be used by the served EH WTRU(s) to measure the quality of the feedback link and generate a channel quality indicator (CQI). In a second step, the BS may transmit a control message requesting CQI feedback from interested EH WTRU(s). The control message may contain one or more of the following information elements:

      • A bit map indicating control message purpose, e.g., a CQI feedback request

    權(quán)利要求

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