RTS CTS Channel Puncturing for Wireless Throughput
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Solution Overview
Problem
Existing wireless communication systems face challenges in efficiently managing large bandwidths during RTS and CTS exchanges, leading to increased power consumption, reduced throughput, and inefficient resource utilization.
Innovation Solution
The proposed solution involves enhancing RTS and CTS exchanges by dynamically puncturing channels and indicating available channel subsets, allowing for flexible resource allocation and improved spectral efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If large bandwidth is used during RTS and CTS exchanges, then throughput is improved, but power consumption increases
Solution Approach 1:
The patent segments the channel bandwidth into multiple sub-channels and transmits RTS and CTS frames only on available sub-channels rather than occupying the entire bandwidth. This segmentation allows the system to achieve sufficient throughput on partial bandwidth while reducing power consumption by avoiding full-bandwidth transmission during control frame exchanges.
Solution Approach 2:
The patent applies partial action by transmitting control frames on a subset of available sub-channels rather than using the complete channel bandwidth. This partial utilization of bandwidth during RTS/CTS exchanges reduces the energy required for transmission while still achieving the necessary control signaling throughput.
2Productivity
If channel puncturing is implemented, then resource utilization is improved, but device complexity increases
Solution Approach 1:
The patent implements dynamic channel puncturing where the pattern of available and unavailable sub-channels changes based on real-time channel conditions and interference patterns. This dynamic adaptation allows the system to optimize resource utilization by selectively using available sub-channels while managing device complexity through standardized puncturing patterns defined in the protocol.
Solution Approach 2:
The patent changes the parameter of channel availability by introducing puncturing patterns that indicate which sub-channels are available for transmission. These parameter changes allow the system to adapt to varying channel conditions and improve resource utilization without requiring complete reconfiguration of the communication system.
3Measurement precision
If full channel bandwidth is monitored, then detection accuracy is improved, but energy consumption increases
Solution Approach 1:
The patent segments the monitoring task by having devices monitor only specific sub-channels indicated by the puncturing pattern rather than monitoring the entire channel bandwidth. This segmented monitoring approach maintains detection accuracy on the relevant sub-channels while significantly reducing the energy consumption associated with full-bandwidth monitoring.
Solution Approach 2:
The patent applies partial action in monitoring by having devices perform clear channel assessment (CCA) only on the subset of sub-channels that are indicated as available, rather than monitoring all sub-channels. This partial monitoring maintains sufficient detection accuracy for the actual data transmission while reducing energy consumption.
Data Source
AI summary
This disclosure provides methods, components, devices and systems for enhancements to request to send (RTS) and clear to send (CTS) exchanges. A first wireless device may receive a beacon frame indicating for the first wireless device to monitor a first channel for a first frame that schedules communication via one or more channels. The first wireless device may receive, from a second wireless device, the first frame indicating a channel bandwidth and a puncturing pattern of multiple available puncturing patterns for the channel bandwidth. The puncturing pattern may be associated with a first subset of a set of multiple channels of the channel bandwidth. The first wireless device may transmit, to the second wireless device, a second frame indicating that a second subset of channels is available and may receive one or more data packets via the second subset of channels.