Service Group Map Entry Prioritization for Auto Channel Discovery
Solution Overview
Problem
Current digital transmission systems experience delays and inefficiencies in auto-discovery processes due to sequential searching of service group maps, leading to multiple timeouts and increased channel tuning, which hinder the timely provision of enhanced services to subscribers.
Innovation Solution
The proposed solution involves rearranging the service group map entries to intersperse first occurrences of each service group identification (SGID) alternately, allowing for quicker identification of the correct SGID by minimizing the number of channels tuned and reducing timeouts, and utilizing a binary search method to expedite the discovery process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If sequential searching of service group map entries is used, then the search process is simple to implement, but the auto-discovery time increases and multiple timeouts occur
Solution Approach 1:
The service group map entries are pre-sorted and organized in advance according to service group identification (SGID) before the auto-discovery process begins. This preliminary organization allows the DHCT to efficiently locate the correct SGID without performing complex search operations during actual service discovery, thereby reducing auto-discovery time while maintaining implementation simplicity.
2Device complexity
If sequential searching of service group map entries is used, then the implementation is straightforward, but the number of channel tunings increases
Solution Approach 1:
The service group map is pre-organized and sorted according to SGID before the auto-discovery process. This preliminary sorting enables the DHCT to directly access the correct channel information without performing multiple sequential tunings, thereby improving channel tuning efficiency while keeping the implementation straightforward.
3Device complexity
If sequential searching of service group map entries is used, then the search algorithm is simple, but the number of timeouts increases
Solution Approach 1:
The service group map entries are pre-sorted and organized according to SGID before the search process begins. This preliminary organization ensures that the DHCT can reliably and quickly locate the correct SGID without encountering multiple timeouts, thereby improving service discovery reliability while maintaining algorithm simplicity.
4Speed
If first occurrences of each SGID are interspersed alternately in the service group map, then the auto-discovery speed increases, but the map organization becomes more complex
Solution Approach 1:
The service group map is pre-organized with first occurrences of each SGID interspersed alternately before the auto-discovery process. This preliminary arrangement enables rapid SGID location during service discovery without requiring complex search algorithms, thereby increasing auto-discovery speed while the organization complexity is managed through pre-computation.
Solution Approach 2:
The service group map is segmented and organized by grouping first occurrences of each SGID together in an interspersed alternating pattern. This segmentation allows the DHCT to efficiently locate any SGID by directly accessing the relevant section of the map, thereby improving auto-discovery speed while the segmented structure manages the organization complexity.
Data Source
AI summary
A system and method for minimizing timeouts when enhanced services are requested through a digital home communications terminal (DHCT) requiring discovery of a service group identification (SGID) assigned to the DHCT. A service group map (SGM) includes a plurality of entries. Each entry includes a frequency, a tabulated transport stream identification (TSID), and a SGID associated with one another. The SGM has multiple occurrences of the same frequency. Each of the entries are prioritized relative one another such that the frequencies associated with first occurrences of each SGID have the highest priority.