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Methods and apparatus for waveform design and signaling for energy harvesting

專(zhuān)利號(hào)
US12133255B2
公開(kāi)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(lèi)
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(shū)

The WTRU(s) may then in a third step choose as feedback information, based on WTRU(s)′ pre-configured parameters and/or broadcast message parameters, one or more of the following options: 1) the WTRU(s)′ I-RNTI(s) assigned during its(their) transition to “RRC Inactive” state or the WTRU(s)′ TMSI(s) in case of WTRU(s) in “RRC Idle” state; 2) a unique identifier that is compact in form which is obtained as a function of the WTRU(s) I-RNTI(s)/TMSI(s), where the function can be preconfigured at the WTRU or signaled during an “RRC Connected” state; 3) an identifier that is obtained as a function of the WTRU(s) I-RNTI(s) and/or its(their) IMSI(s)/TMSI(s); 4) a preamble that is chosen based on broadcast message parameters and/or as a function of the WTRU(s)′ I-RNTI(s)/TMSI(s)/IMSI(s); and 5) a generic identifier of the WTRU(s)′ EH capability.

The feedback information might or might not be appended by CRC bits to help the gNB(s) detect decoding errors and identify collisions. In a fourth step, the WTRU(s) determine the carrier frequency and time slot within the contention-based transmission window to be used for backscattering the feedback information randomly according to some distribution that is preconfigured at the WTRU(s) or configured using assisting information that is provided as part of the broadcast control message. As an alternative solution to minimize collisions when EH control and signaling are based only on WTRU(s) capability, WTRU(s) interested in EH related signaling will decode the feedback messages over all carriers and at all the time slots within the contention-based transmission window before its(their) randomly selected time slot, and if it(they) detect the same WTRU capability identifier they will refrain from feedback transmission. One example timeline for contention-based feedback transmission is shown in FIG. 18.

權(quán)利要求

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