Frequency Overlay MAP Overhead Reduction via Unified Allocation
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Solution Overview
Problem
Conventional frequency overlay systems experience significant MAP overhead in frequency resource allocation between Frequency Allocations (FAs), which limits efficiency and increases unnecessary overhead in network operations.
Innovation Solution
A frequency resource allocation scheme that reduces MAP overhead by using identification information, where a Base Station (BS) transmits a first frame with control and identification information for a primary FA and a second frame with resource indications for secondary FAs, allowing efficient allocation and reducing redundant overhead.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If separate coding MAP message is used for each MS in frequency overlay system, then link adaptation gain and coding efficiency are improved, but MAP overhead increases due to multiple CRC fields
Solution Approach 1:
The patent merges multiple separate MAP messages into a single unified MAP message that serves multiple MSs. Instead of transmitting separate MAP messages with individual CRC fields for each MS, the invention creates one consolidated MAP message containing resource allocation information for multiple MSs, thereby reducing the total number of CRC fields and overall MAP overhead while maintaining separate coding benefits for each MS.
Solution Approach 2:
The unified MAP message structure is designed to serve multiple MSs simultaneously, making it a multi-functional message that performs the role of what would otherwise require multiple separate messages. This universal approach allows a single MAP message to allocate resources to multiple MSs with different bandwidth requirements, reducing overhead while preserving individualized coding advantages.
2Adaptability or versatility
If frequency resources are divided into multiple FAs to support various bandwidths, then adaptability to different MS bandwidth requirements is improved, but system complexity increases
Solution Approach 1:
The patent segments the available frequency resources into multiple Frequency Allocations (FAs) of different sizes (e.g., 10 MHz, 20 MHz) that can be assigned to MSs based on their bandwidth requirements. This segmentation allows the system to support diverse bandwidth needs while maintaining organized resource management. The unified MAP message then efficiently manages these segmented FAs without requiring complex separate control mechanisms for each FA.
Solution Approach 2:
The invention introduces a new dimension to resource allocation by creating a hierarchical structure where a single MAP message operates at the message level while managing multiple FAs at the frequency level. This dimensional approach allows the system to handle multi-FA allocations efficiently without proportionally increasing control complexity, as the unified MAP message coordinates all FA assignments in a structured manner.
3Quantity of substance
If identification information is removed from each IE to reduce overhead, then MAP overhead is reduced, but ability to detect and decode specific MS IEs is compromised
Solution Approach 1:
The patent introduces an intermediary mechanism where the unified MAP message structure itself acts as a mediator that organizes and identifies IEs for different MSs without requiring traditional MS-specific identification fields in each IE. The message structure includes organized sections or patterns that allow receiving devices to identify which IE belongs to which MS based on the structured arrangement, thereby reducing overhead while maintaining detection capability through structural rather than explicit identification.
Data Source
AI summary
A system and method for transmitting and receiving frequency allocation information based on identification information in a frequency overlay system are provided. The method includes transmitting a frame of a first Frequency Allocation (FA) to Mobile Stations (MSs) by inserting control information and identification information of the MSs to which frequency resources are allocated into the first FA frame, and transmitting a second frame indicating a second FA the MSs by inserting the identification information and a resource indication of the first FA into the second FA frame. Thereby, an overhead can be reduced and a frequency resource can be used efficiently.