Electronic Service Guide Signaling for DVB-H Handover
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Solution Overview
Problem
In wireless digital communication systems like DVB-H, the use of Program Specific Information (PSI) or Service Information (SI) for service discovery is inefficient due to high bandwidth requirements, leading to sub-optimal user experience and decreased system efficiency, especially during handover processes between cells.
Innovation Solution
Embedding signaling information within the Electronic Service Guide (ESG) using level 2 and upper layer signaling structures, which includes local multiplex information and other multiplex information, to efficiently manage service components and facilitate seamless handovers across cells.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If PSI or SI signaling is used in wireless communication systems, then service information can be transmitted, but bandwidth consumption increases and system efficiency decreases
Solution Approach 1:
The patent combines level 2 signaling information and upper layer signaling information into a single ESG data structure. This merging eliminates redundant signaling transmissions and reduces overall bandwidth consumption while ensuring complete service information delivery to mobile devices.
Solution Approach 2:
The ESG serves multiple functions simultaneously: it provides service guide information to users, carries level 2 signaling data for service component location, and transports upper layer signaling information for session management. This multi-functionality reduces the need for separate signaling channels and decreases total bandwidth usage.
2Loss of information
If PSI or SI signaling is used for service discovery, then services can be located, but system efficiency decreases and user experience deteriorates
Solution Approach 1:
The patent pre-organizes service information, level 2 signaling data, and upper layer signaling information into a structured ESG format before transmission. This preliminary organization allows mobile devices to efficiently locate and access service components without requiring multiple signaling exchanges, thereby improving system efficiency and user experience.
3Reliability
If handover procedures are performed in traditional systems, then service continuity is maintained, but processing overhead increases and user experience decreases
Solution Approach 1:
The ESG contains pre-configured level 2 signaling information that includes service component location data and mapping relationships. During handover, mobile devices can directly access this pre-organized information to quickly establish service continuity without extensive discovery procedures, reducing handover processing time while maintaining reliable service delivery.
Data Source
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AI summary
Apparatuses may perform and methods may include: receiving a digital broadcast signal that includes an Electronic Service Guide (ESG); extracting and assembling the ESG; extracting from the ESG signaling information which links one or more services in an upper level layer (ULI) of a broadcast protocol to a physical layer (L1) of the broadcast protocol. Based on the signaling information, one or more services from a broadcast system may be accessed.