Frame-Based Antenna Selection for Low-Power MIMO Communication
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Solution Overview
Problem
Current wireless communication systems with multiple transmitting and receiving portions face inefficiencies in power consumption, as all portions are often kept active even when only a few are needed, leading to wasteful power usage, especially in portable devices, and can cause data collisions in IEEE 802.11a systems when multiple portions are set in service.
Innovation Solution
Implement a system where the number of transmitting and receiving portions is dynamically adjusted based on the propagation path, data amount, and data streams, with portions being set to OFF-state when not in use and ON-state only as needed, using frame analysis to determine the optimal configuration for power control.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If multiple transmitting and receiving portions are constantly activated to enable high-speed MIMO communication, then communication speed and data transmission capacity are improved, but power consumption increases significantly
Solution Approach 1:
The patent implements dynamic selection of transmitting and receiving portions based on frame analysis. The system analyzes incoming frames to determine which antennas and signal streams are actually needed for the current communication task, then activates only those specific portions while keeping others inactive. This dynamic adaptation allows the system to maintain high-speed MIMO communication when needed while reducing power consumption during lower-demand operations.
Solution Approach 2:
The system changes operational parameters by varying the number and configuration of active transmitting and receiving portions based on communication conditions. By analyzing frame structures and communication requirements, the system adjusts which antenna elements are activated, effectively changing the operational parameters of the MIMO system to match actual needs rather than maintaining a fixed high-power configuration.
2Reliability
If all transmitting and receiving portions are kept active to handle multiple data streams, then communication reliability and data stream handling capability are improved, but unnecessary portions cause data collisions and interfere with each other
Solution Approach 1:
The patent extracts and activates only the necessary transmitting and receiving portions required for handling the current data streams. By analyzing the frame structure and identifying which antenna elements are actually needed for the current communication task, the system isolates and activates only those specific portions while keeping others inactive, thereby preventing interference and data collisions between unnecessary portions.
3Productivity
If multiple receiving portions are activated to receive multiple data streams simultaneously, then data transmission capacity is improved, but power consumption increases due to unnecessary portions remaining active
Solution Approach 1:
The patent applies partial action by activating only the necessary number of receiving portions required for the current data transmission task rather than keeping all portions active. The system analyzes incoming frames to determine the actual number of data streams being transmitted, then activates exactly that number of receiving portions, avoiding the excessive activation of unnecessary portions and their associated power consumption.
Data Source
AI summary
A wireless communication apparatus includes an M-number of (M is an integer of 2 or more) receiving portions connected to respective antennas, a frame analyzing section configured to analyze a reception signal received by the M-number of receiving portions, and a selecting section configured to select a receiving portion to be in service from the M-number of receiving portions. The selecting section selects a P-number of (P is an integer of from 0 to M) receiving portions from the M-number of receiving portions, based on an analysis result obtained by the frame analyzing section.