Directional Antenna Scheduling for Spatial Reuse
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Solution Overview
Problem
Current wireless communication systems, such as WLAN and WPAN, only allow one terminal pair to transmit data at a time, failing to utilize the full potential of terminals with high-directional transmission/reception capacities, leading to inefficient data transmission.
Innovation Solution
A scheduling method and apparatus that transmits scheduling information using directional antennas to enable multiple terminal pairs to transmit data simultaneously in the same time period by measuring channel interference and generating scheduling information that avoids conflicts, allowing spatial reuse.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a noncompetitive transmission method is used to allocate transmission chances to terminals, then transmission reliability is improved, but data transmission efficiency deteriorates because only one terminal pair can transmit at a time
Solution Approach 1:
The system segments the transmission medium by introducing spatial dimensions through directional antennas. Multiple terminal pairs are allocated transmission opportunities in the same time period by dividing the transmission space into different directional beams, allowing simultaneous transmissions without interference.
Solution Approach 2:
The patent transitions from one-dimensional time-based allocation to multi-dimensional allocation by incorporating spatial directionality. Directional antennas create narrow beams that enable multiple terminal pairs to transmit simultaneously in different spatial directions within the same time period, effectively adding a spatial dimension to resource allocation.
2Manufacturing precision
If directional antennas with narrow beams are used for high-directional transmission, then transmission precision is improved, but resource utilization deteriorates because other terminals cannot transmit simultaneously
Solution Approach 1:
The system merges multiple narrow directional beams into a comprehensive spatial resource allocation scheme. By coordinating multiple terminal pairs with directional antennas in different spatial directions, the system combines the precision of narrow beams with the capability of simultaneous transmissions, achieving both high transmission precision and improved resource utilization.
Solution Approach 2:
The patent enables continuous utilization of the transmission medium by allowing multiple terminal pairs to transmit simultaneously in different spatial directions. This eliminates idle time in the transmission medium and maintains continuous useful action across multiple spatial channels, maximizing resource utilization while preserving directional transmission precision.
Data Source
AI summary
A scheduling method of giving a chance for transmission to a plurality of terminals in the same time period, and a device therefor are provided. The scheduling method includes: transmitting first scheduling information to terminals in a network, the first scheduling information defining transmitting/receiving terminals and a transmission time period; receiving channel measurement information including inter-terminal interference information from the terminals in the network; and generating second scheduling information defining transmission time periods and a plurality of transmitting/receiving terminals that do not interfere with each other by using the channel measurement information.