By jointly using layered division multiplexing (LDM) and scalable hierarchical video coding (SHVC), ATSC 3.0 will be used to deliver service targeted to both mobile and traditional rooftop antenna receivers. Under this approach, a physical layer pipe (PLP) with robust coded modulation will ensure mobile reception in an area comparable to an ATSC 1.0 TV station’s current 15 dB rooftop coverage. However, the same approach will also give rise to increased coverage overlap between TV stations, as the same robust PLP will be decoded by rooftop receivers over a much larger area beyond ATSC 1.0’s 15 dB contours. When multiple independently owned TV stations affiliated to the same broadcast programming network overlap the subscriber footprint of a multichannel video program distributor (MVPD) they risk becoming redundant affiliates so the MVPD could pit them against each other in bargaining over lower retransmission consent fees. We calculate the potential increase in rooftop coverage overlap among same-network affiliates of the four largest U.S. over-the-air broadcast programming networks in the U.S. (ABC, CBS, NBC, and Fox). We find that as much as 75% of the population will have access to at least one redundant network affiliate, and 60% will have access to two affiliates or more. Under U.S. federal communications commission (FCC) rules, MVPDs can only pit affiliates against each other if the out-of-market TV station is classified by the FCC as significantly viewed (SV) on a per-county basis. Thus, we analyze if an increase in coverage overlap would in fact increase the number of counties where out-of-market stations become SV. We build a predictive random forests model based on current ATSC 1.0 15 dB coverage and the publicly available list of existing SV stations. With an LDM upper layer with a reception threshold of 2 dB —equivalent in bitrate to one full-HD 1080p program—, the model predicts that the number of county/SV station pairs would increase by 100% or more. This suggest that despite all the benefits of the LDM + SHVC approach, and the potential to increase revenues through service to mobile consumers, there is a risk that this approach may negatively affect TV broadcasters’ retransmission consent revenues. We discuss a number of potential trade-offs and solutions that can help to mitigate this issue.

中文翻译：

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LDM 和 SHVC 移动电视覆盖范围溢出到美国的固定屋顶接收和 MVPD 转播同意

通过联合使用分层多路复用 (LDM) 和可伸缩分层视频编码 (SHVC)，ATSC 3.0 将用于提供针对移动和传统屋顶天线接收器的服务。在这种方法下，具有强大编码调制的物理层管道 (PLP) 将确保在与 ATSC 1.0 电视台当前 15 dB 屋顶覆盖范围相当的区域内进行移动接收。然而，同样的方法也会增加电视台之间的覆盖重叠，因为相同的强大 PLP 将由屋顶接收器在超出 ATSC 1.0 的 15 dB 等值线的更大区域内解码。当隶属于同一个广播节目网络的多个独立拥有的电视台与多频道视频节目发行商 (MVPD) 的订户足迹重叠时，它们可能会成为多余的附属机构，因此 MVPD 可能会在较低的转播许可费上相互讨价还价。我们计算了美国四大美国无线广播节目网络（ABC、CBS、NBC 和 Fox）的同一网络附属机构之间屋顶覆盖重叠的潜在增加。我们发现多达 75% 的人口可以访问至少一个冗余网络附属机构，60% 的人口可以访问两个或更多附属机构。根据美国联邦通信委员会 (FCC) 的规定，如果市场外的电视台被 FCC 归类为每个县的显着收视率 (SV)，MVPD 只能让附属公司相互竞争。因此，我们分析了覆盖重叠的增加是否实际上会增加市场外电台变为 SV 的县的数量。我们基于当前的 ATSC 1.0 15 dB 覆盖范围和现有 SV 站的公开列表构建了一个预测性随机森林模型。使用接收阈值为 2 dB 的 LDM 上层（比特率相当于一个全高清 1080p 节目），该模型预测县/SV 站对的数量将增加 100% 或更多。这表明，尽管 LDM + SHVC 方法的所有好处，以及通过为移动消费者提供服务增加收入的潜力，这种方法可能会对电视广播公司的转播许可收入产生负面影响。我们讨论了一些有助于缓解此问题的潜在权衡和解决方案。