Frame Construction Module for Legacy and New Standard Coexistence
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Solution Overview
Problem
Existing communication systems face challenges in coexisting legacy and new standards, such as IEEE 802.16e and 802.16m, which require enhanced spectrum efficiency and backward compatibility, while maintaining interference-free data transmission across different subcarriers.
Innovation Solution
A frame construction module comprising first and second frame generators and a constructor, which generates and constructs frames supporting both legacy and new standards, allowing simultaneous transmission without interference by using discontiguous bands and backward-compatible preamble searches.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a single frame structure is used for both legacy and new standards, then device complexity is reduced, but spectrum efficiency and speed tolerance cannot be enhanced
Solution Approach 1:
The frame structure is segmented into multiple portions, with a first portion for legacy standard data and a second portion for new standard data. This segmentation allows each portion to be optimized for its specific standard's requirements, enabling the new standard to achieve enhanced spectrum efficiency while the legacy standard maintains its compatibility.
2Productivity
If separate frame structures are used for legacy and new standards, then spectrum efficiency is enhanced, but system complexity increases
Solution Approach 1:
The patent merges the legacy and new standard frame structures into a single integrated frame. The frame constructor combines the first portion (legacy data) and second portion (new standard data) into one unified frame structure, allowing both standards to coexist without requiring separate transmission frameworks, thus managing complexity while maintaining enhanced spectrum efficiency.
3Reliability
If discontiguous bands are used for legacy data transmission, then interference with new standard data is reduced, but frame construction complexity increases
Solution Approach 1:
The patent applies local quality by assigning different frequency band characteristics to different data portions. Discontiguous bands are specifically allocated for legacy standard data transmission, creating localized frequency regions with different properties. This allows interference-free transmission by ensuring legacy and new standard data occupy distinct frequency domains, while the frame constructor manages the complexity of combining these differently-characterized portions.
Data Source
AI summary
A module constructs a frame for communication in a communication system that supports a new standard and a legacy standard, the new standard being backward compatible with the legacy standard. The module comprises a first frame generator configured to generate a first portion of the frame, the first portion of the frame to support a first set of data to be transmitted in the legacy standard in each of a number of first bands, a second frame generator configured to generate a second portion of the frame, the second portion of the frame to support a second set of data to be transmitted in the new standard in a second band composed of the first bands, and a frame constructor configured to construct the frame based on the first portion of the frame from the first frame generator and the second portion of the frame from the second frame generator.