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Shared spectrum access for broadcast and bi-directional, packet-switched communications

專利號
US11234288B2
公開日期
2022-01-25
申請人
Coherent Logix, Incorporated（US TX Austin）
發(fā)明人
Kevin A. Shelby; Durga P. Prasad; Sandeep Mavuduru Kannappa; Mark Earnshaw
IPC分類
H04W76/28; H04W16/14; H04W72/00; H04W72/04
技術(shù)領(lǐng)域
eutra,atsc,broadcast,ue,ngbp,in,station,drx,may,3.0
地域： TX TX Austin

摘要

Techniques are disclosed relating to spectrum sharing between different radio access technologies. In some embodiments, a broadcast base station is configured to wirelessly broadcast audio and video data to a plurality of broadcast receiver devices using a particular frequency band. In these embodiments, the broadcast base station is configured to discontinue broadcasting in the particular frequency band during a scheduled time interval, to enable one or more cellular base stations to perform cellular packet-switched wireless data communications using the particular frequency band.

說明書

FIG. 8 is a signal diagram illustrating an exemplary time interleaving between broadcast and cellular transmissions, according to some embodiments. This example uses a sampling rate of 12.288 Msps for NGBP, but various sampling rates may be used as appropriate. Note that while FIG. 8 shows a particular frequency band, broadcast transmissions may or may not continue on other frequency bands during relinquishment of the illustrated band.

In the illustrated example, PPDCHs 0, 1, and 2 carry NGBP broadcast data. In this example, each of these PPDCHs is configured to use an FFT size of 4096, with a cyclic prefix length of 512 samples. This results in a total of 9216 samples for two consecutive OFDM symbols, which fits within the blank area of an EUTRA MBSFN subframe, in the illustrated embodiment. (Alternatively, one OFDM symbol with an FFT size of 8192 and a cyclic prefix length of 1024 samples may be used for the same total length of 9216 samples.) In this example, PPDCH 0 has a periodicity of 5 ms to cover MBSFN subframes 1 and 6, PPDCH 1 has a periodicity of 5 ms to cover MBSFN subframes 2 and 7, and PPDCH 2 has a periodicity of 5 ms to cover MBSFN subframes 3 and 8.

權(quán)利要求

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