Band-Segmented Bootstrap Signals for Narrowband Broadcast Reception
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Solution Overview
Problem
The existing broadcast spectrum allocation system is inefficient, as broadcasters face difficulties in utilizing their allocated licenses fully and efficiently, especially when transitioning to provide multiple wireless services, including mobile broadcasting and IoT services, due to the need for additional licenses and the inefficiency in utilizing the entire spectrum.
Innovation Solution
The system generates and transmits band segmented bootstrap signals and partitioned post bootstrap signals, allowing for narrow band reception and lower complexity/power saving devices, enabling efficient use of bandwidth by segmenting a broader bandwidth into smaller partitions that can be tuned by devices like IoT and wearable devices for synchronization and data reception.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a broadcaster transmits multiple types of content using different RF waveforms within the same geographic radius, then service versatility is improved, but device complexity and licensing requirements worsen
Solution Approach 1:
The broadcast signal is segmented into multiple partitions, each carrying different types of content (e.g., traditional TV, mobile broadcasting, IoT services). Devices can selectively receive only the partitions relevant to their function, avoiding the need to process all signal types and reducing device complexity while maintaining service versatility.
Solution Approach 2:
A single RF channel is designed to carry multiple types of content simultaneously through partitioning. This universal channel can serve traditional broadcast receivers, mobile devices, and IoT devices alike, eliminating the need for separate licensed channels for each service type.
2Productivity
If the broadcast spectrum is fully utilized with multiple services, then spectrum efficiency is improved, but signal detection difficulty worsens
Solution Approach 1:
The spectrum is segmented into distinct partitions within a single RF channel, each with identifiable characteristics. This segmentation allows efficient spectrum utilization while maintaining detectability, as each partition can be independently identified and decoded based on its unique signal properties.
Solution Approach 2:
Bootstrap signals serve as intermediaries that facilitate initial signal detection and provide information about the partitioned structure. These bootstrap signals enable devices to efficiently detect and navigate the multi-service broadcast channel without being overwhelmed by the complexity of multiple simultaneous services.
3Adaptability or versatility
If bandwidth is allocated to support multiple services, then service capacity is improved, but device power consumption worsens
Solution Approach 1:
The broadband signal is divided into multiple partitions, allowing devices to selectively receive only the partitions they need. This segmentation enables broad service capacity while reducing power consumption, as devices can ignore unnecessary partitions and focus processing resources only on relevant content.
Solution Approach 2:
Devices perform partial reception by tuning to and processing only specific partitions of the broadcast signal rather than the entire bandwidth. This partial action approach maintains access to multiple services while significantly reducing the energy required for signal processing compared to receiving the full broadband signal.
Data Source
AI summary
An apparatus and a method are provided for generating and transmitting one or more band segmented bootstrap signals. For example, a transmitter may be configured to generate a plurality of sequence numbers and apply cyclic shift to each of the plurality of sequence number. The transmitter is further configured to map each of the shifted sequence numbers to at least one frequency domain subcarrier of a plurality of frequency domain subcarriers, and translate each subcarrier of the plurality of subcarriers to a time domain sequence. Each subcarrier of the plurality of subcarriers may be shifted with respect to other subcarriers of the plurality of subcarriers, thereby aligning each segment of the band segmented bootstrap signals next to each other in the frequency domain.