RF Handoff Tables for Multi-Frequency Network Channel Selection
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Solution Overview
Problem
In multi-frequency networks, devices face challenges in performing seamless handoffs due to data acquisition failures, leading to a loss of access to common and additional content, which adversely affects user experience.
Innovation Solution
A method is introduced that generates wide and local seamless handoff tables and partially seamless handoff tables to determine candidate RF channels for handoff, prioritizing those that preserve highest priority flows and ensure continuous content access by scanning and selecting RF channels with satisfactory decoding of priority flows.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If a device randomly hands off to any available RF channel carrying desired content, then handoff speed is improved, but content availability and user experience deteriorate
Solution Approach 1:
The system pre-generates handoff tables (seamless and partially seamless) that identify candidate RF channels and their associated content multiplexes before handoff is needed. When handoff is triggered, the device can quickly select from pre-evaluated options rather than randomly searching, thus maintaining both speed and content availability.
Solution Approach 2:
The system uses feedback from monitoring current LOI content multiplexes and comparing them with candidate LOI multiplexes to make informed handoff decisions. The handoff selection is based on feedback regarding which candidate channels will preserve highest priority flows and maximize common content availability.
2Ease of operation
If the device performs RF handoff to maintain content access, then user experience is improved, but handoff complexity increases
Solution Approach 1:
The handoff tables are segmented into different types (seamless and partially seamless) with different levels of content preservation guarantees. This segmentation allows the system to provide enhanced user experience through seamless handoffs when available, while falling back to partially seamless options when necessary, without requiring complete redesign of the handoff mechanism.
3Loss of information
If the device scans multiple candidate RF channels to maximize content availability, then content access is improved, but handoff time increases
Solution Approach 1:
The handoff tables are generated in advance, pre-identifying which RF channels carry which content multiplexes. This preliminary organization eliminates the need for extensive real-time scanning during handoff, as the device can quickly query the pre-generated tables to find suitable candidate channels that preserve desired content.
Solution Approach 2:
The system uses partially seamless handoff tables as a fallback option that requires less stringent content matching. This allows the handoff process to complete faster by accepting channels that preserve some but not all content, thus reducing handoff time while still maintaining acceptable content access.
Data Source
AI summary
Methods and apparatus for RF handoff in a multi-frequency network include selecting an RF channel from wide and local seamless and partially seamless handoff tables. A method includes generating seamless and partially seamless handoff tables RF channels, and selecting an RF channel for a handoff so that RF channels with common wide content are given higher priority over RF channels with common local content.