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Apparatus and method for reception and transmission of control channels

專利號(hào)
US11889317B2
公開(kāi)日期
2024-01-30
申請(qǐng)人
Motorola Mobility LLC(US IL Chicago)
發(fā)明人
Ravikiran Nory; Vijay Nangia; Murali Narasimha; Ajit Nimbalker
IPC分類
H04W16/14; H04W72/0446; H04W72/23; H04L5/00; H04W74/08; H04W72/0453; H04L27/26; H04L5/14
技術(shù)領(lǐng)域
subframe,ue,enb,truncation,symbols,subframes,unlicensed,lbt,truncated,in
地域: IL IL Chicago

摘要

A base station can operate a first serving cell on a licensed carrier frequency and a second serving cell on an unlicensed carrier frequency. The base station can perform a listen before talk (LBT) on the unlicensed carrier frequency for a first time duration. The base station can determine that the unlicensed carrier frequency is free. The base station can transmit an activation command on the first serving cell for receipt by a UE, the activation command being configured to activate the UE to receive transmissions from the base station on the second serving cell. The base station can transmit after determining that the unlicensed carrier frequency is free, a reserve transmission on the unlicensed carrier frequency at least until the base station begins transmission of the activation command on the first serving cell.

說(shuō)明書

In some embodiments the first plurality of OFDM symbols consists of seven OFDM symbols and the second plurality of OFDM symbols also consists of seven ODFM symbols. In some embodiments, the downlink control information in the second set of CCEs is determined to be the resulting downlink control information when the subframe is a subframe with truncation, which includes at least one of the first plurality of OFDM symbols in the first time slot.

Additionally, in various embodiments, receiving of the subframe structure further comprises receiving the subframe from a serving cell in an operating channel of an unlicensed frequency band. Various embodiments may operate such that the resulting downlink control information from either the first or the second set of CCEs comprise resource allocation information prescribing an allocation of resources for Physical Downlink Shared Channel (PDSCH) reception.

權(quán)利要求

1
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