Ranging Channel Configuration Using Idle Time in Wireless Frames
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Solution Overview
Problem
In wireless communication systems, particularly in IEEE 802.16 standards, the configuration of ranging channels is inefficient due to the lack of optimal utilization of idle times and transition gaps, leading to suboptimal channel performance and resource allocation.
Innovation Solution
Configuring ranging channels to utilize idle times, idle symbols, RTG, and TTG as part of the frame structure, incorporating ranging cyclic prefix (RCP), ranging preamble (RP), and guard times, with adaptable RCP lengths based on subframe types to enhance channel performance and resource efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If ranging channels are configured to utilize idle times and transition gaps (RTG, TTG) in the frame structure, then resource efficiency and channel performance are improved, but the complexity of frame structure configuration increases
Solution Approach 1:
The patent merges the ranging channel with previously idle time resources (idle times, RTG, TTG) in the frame structure. By combining these previously separate elements into a unified ranging channel configuration, the system achieves better resource efficiency without proportionally increasing complexity, as the idle resources are being put to productive use rather than creating entirely new structures.
Solution Approach 2:
The ranging channel is designed to be universally applicable across different frame structures and duplex modes (FDD and TDD). The same ranging channel configuration can utilize idle times, RTG, and TTG in various frame structures, making the solution multi-functional and adaptable to different wireless communication scenarios without requiring separate configurations for each case.
2Measurement precision
If RCP length is adapted based on subframe types to enhance channel performance, then synchronization accuracy is improved, but the complexity of channel configuration increases
Solution Approach 1:
The patent applies different RCP lengths tailored to specific subframe types. Instead of using a uniform RCP length across all subframes, the system configures appropriate RCP lengths locally for each subframe type based on its specific requirements. This localized optimization improves synchronization accuracy for each subframe type while avoiding the overhead of complex global reconfiguration.
Data Source
AI summary
Disclosed is a method for configuring a ranging channel in various frame structures and using the same in a communication system. A ranging channel is effectively configured according to a data structure, namely, frame structure, transmitted and received between a mobile station (MS) and a base station (BS) in a wireless communication system, and ranging information is transmitted therethrough to thereby improve performance of a communication channel and resource efficiency. In the wireless communication system, a ranging channel is configured by using a time interval, such as an idle time, an idle symbol, an RTG, a TTG, and the like, not actually used for transmission of data or a signal in a data structure, namely, in a frame structure, transmitted and received between an MS and a BS, to transmit ranging information, so the channel performance and resource efficiency can be improved.