WiMAX Radio MAP Parsing Delay Coexistence
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Solution Overview
Problem
Multi-Radio coexistence Platforms (MRP) devices face interference between different wireless network radios operating in overlapping frequency bands due to physical proximity and radio power leakage, exacerbated by significant MAP parsing delays that cause WiMAX radios to remain active unnecessarily, reducing available time for other radios.
Innovation Solution
Implementing a time-division multiplexing mechanism that reverses the sequence of DL sub-frame and UL sub-frame within the WiMAX superframe or modifies the DL map to define DL bursts in the next frame, creating a time gap for MAP parsing, allowing the WiMAX radio to determine its scheduled bursts before the DL sub-frame starts, thereby reducing interference and optimizing radio time usage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the WiMAX radio operates continuously to process MAP information and receive data bursts, then the WiMAX communication reliability is improved, but the available time for other radios to operate is reduced due to MAP parsing delays
Solution Approach 1:
The patent applies preliminary action by having the WiMAX radio tune to the WiMAX frequency and remain in a low-power listening state before the actual data reception time. This allows the radio to be ready to process MAP information and receive bursts without being fully active continuously, thereby reducing the time other radios need to wait while maintaining reliable WiMAX communication.
Solution Approach 2:
The patent implements dynamics by transitioning the WiMAX radio between different operational states - sleeping, tuning, listening, and active reception - rather than maintaining a static continuous operation mode. This dynamic state management allows the radio to be active only when necessary for MAP parsing and data reception, freeing up time for other radios to operate.
2Productivity
If multiple radios operate concurrently in overlapping frequency bands, then the network throughput is improved, but interference between radios increases due to physical proximity and power leakage
Solution Approach 1:
The patent applies periodic action through time-division multiplexing, where different radios are allocated specific time slots for operation. The WiMAX radio operates periodically during its assigned slots while other radios operate during their designated slots, allowing multiple radios to share the device without continuous interference, thus maintaining network throughput while reducing harmful interference effects.
Solution Approach 2:
The patent implements segmentation by dividing the operation of multiple radios into separate time segments or slots. Instead of all radios operating simultaneously, each radio is given a specific time window to transmit and receive, effectively segmenting the shared resource of the radio interface to eliminate interference while preserving overall network productivity.
3Reliability
If the WiMAX radio remains active to account for MAP parsing delays, then the WiMAX data reception reliability is improved, but the power consumption increases and available bandwidth for other radios decreases
Solution Approach 1:
The patent applies preliminary action by having the WiMAX radio tune to the frequency and enter a low-power listening state in advance of the actual data reception. This preliminary preparation allows the radio to process MAP information efficiently without maintaining full power consumption, ensuring reliable data reception while minimizing energy usage during the critical parsing delay period.
Solution Approach 2:
The patent implements dynamics by using dynamic power management that adjusts the WiMAX radio's power state based on operational needs. The radio transitions from a low-power sleeping state to a higher-power tuning and listening state only when MAP parsing or data reception is required, thereby maintaining reception reliability while significantly reducing overall power consumption compared to continuous full-power operation.
Data Source
AI summary
In general, in one aspect, the disclosure describes an apparatus that includes a first radio to communicate with a first wireless network and a second radio to communicate with a second wireless network. The first wireless network transmits a map defining locations within an assigned spectrum data is to be communicated therebetween. An earliest possible location defined in map is such that the map can be parsed within the time it would take to get to the earliest possible location so that the radio can be turned off after receiving the map until the location defined in the map, and the second radio is active when the first radio is not.