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Sub-band selection at cellular base station for non-overlapped or partially overlapped full duplex operation

專利號
US12200629B2
公開日期
2025-01-14
申請人
AT&T Intellectual Property I, L.P.（US GA Atlanta）
發(fā)明人
Aditya Chopra; Salam Akoum; Thomas Novlan
IPC分類
H04W72/04; H04L5/00; H04L5/14; H04W52/24; H04W72/0446; H04W72/541
技術(shù)領(lǐng)域
receiver,or,band,sub,duplex,in,network,self,channel,be
地域： GA GA Atlanta

摘要

Aspects of the subject disclosure may include, for example, determining a self-interference channel response of a transceiver of a mobile base station having a transmitter and a receiver. The self-interference channel response spans multiple sub-bands of a predetermined mobile cellular frequency channel. A first sub-band of the multiple sub-bands is identified according to the self-interference channel response and, an estimate is determined, at the receiver, of a first coupled transmit power level of the transmitter when operating within the first sub-band. A receiver sensitivity is adjusted according to the first coupled transmit power level to obtain an adjustment adapted to increase receiver sensitivity, while restricting operation of the receiver to a substantially linear region. The adjustment allows a transmission within the first sub-band and a reception within a second sub-band of the plurality of sub-bands to occur simultaneously at the mobile base station. Other embodiments are disclosed.

說明書

The receiver sensitivity 232a may vary according to adjustment of the receiver reference level 230a. For example, the receiver sensitivity 232a may be estimated by subtracting the receiver's dynamic range 234a from the adjusted receiver reference level 230a. As the adjusted receiver reference level is increased, the receiver sensitivity 232a may increase in a like manner, effectively maintaining separation according to the dynamic range 234a.

In at least some embodiments, the receiver sensitivity 232a should be adjusted to ensure that the receiver is adapted to receiver a minimum received signal level. For example, the received uplink signal 226 maximum power level 227 should be at or above the receiver sensitivity 232a, e.g., by some specified amount. The amount above the receiver sensitivity 232a may be specified, e.g., according to a signal-to-noise ratio (SNR), a signal-plus-interference-to-noise ration (SINAR), and the like. To the extent that the coupled maximum power level 229 is sufficiently high to permit an adjustment that accommodates the received uplink signal 226, it is understood that at least some compromises may be made. For example, referring to FIG. 2F, a readjusted receive reference level 230b may be adjusted below the coupled maximum power level 229 (FIG. 2E), to effectively lower the receiver sensitivity 232b below the maximum power level 227 of the received uplink signal 226.

權(quán)利要求

1
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