Clear Channel Assessment for Narrowband Wireless Interference
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current wireless communication devices, particularly those using Bluetooth and WLAN technologies, face interference issues due to the lack of clear channel assessments (CCAs) for narrowband channels, leading to reduced throughput and increased latency, as they often rely on detect and avoid mechanisms that can cause unnecessary channel avoidance and schedule adjustments.
Innovation Solution
Implementing a clear channel assessment (CCA) mechanism in wireless communication devices to determine if narrowband channels are clear before transmission, allowing for efficient use of channels and reducing interference with both narrowband and wideband communications by associating with channels and transmitting only when they are clear, and using a combination of CCA and detect and avoid mechanisms to manage channel usage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If detect and avoid mechanisms are used for narrowband communications, then interference with wideband communications is reduced, but unnecessary channel avoidance and schedule adjustments occur reducing throughput
Solution Approach 1:
The patent performs clear channel assessment (CCA) before transmission on narrowband channels to determine if the channel is clear. This preliminary action allows the device to proceed with transmission when the channel is clear, avoiding unnecessary channel avoidance and schedule adjustments, thereby maintaining higher throughput while still preventing interference when needed.
2Object-affected harmful factors
If detect and avoid mechanisms are used for narrowband communications, then interference with wideband communications is reduced, but latency increases due to channel avoidance
Solution Approach 1:
The patent performs clear channel assessment (CCA) before transmission on narrowband channels to determine if the channel is clear. This preliminary action allows the device to proceed with transmission when the channel is clear, avoiding unnecessary channel avoidance and schedule adjustments, thereby maintaining higher throughput while still preventing interference when needed.
3Productivity
If clear channel assessment is performed before transmission on narrowband channels, then channel utilization is improved, but interference with other narrowband communications may occur
Solution Approach 1:
The patent performs clear channel assessment (CCA) before transmission on narrowband channels to determine if the channel is clear. This preliminary action allows the device to proceed with transmission when the channel is clear, avoiding unnecessary channel avoidance and schedule adjustments, thereby maintaining higher throughput while still preventing interference when needed.
4Loss of time
If clear channel assessment is performed before transmission on narrowband channels, then latency is reduced, but device complexity increases
Solution Approach 1:
The patent performs clear channel assessment (CCA) before transmission on narrowband channels to determine if the channel is clear. This preliminary action allows the device to proceed with transmission when the channel is clear, avoiding unnecessary channel avoidance and schedule adjustments, thereby maintaining higher throughput while still preventing interference when needed.
Data Source
AI summary
This disclosure provides systems, methods and apparatus for clear channel assessment (CCA) enabled narrowband (NB) communications. In some implementations, a device is configured to associate with an NB channel (such as a Bluetooth channel), perform a CCA to assess whether the NB channel is clear, and transmit on the NB channel when clear. If the NB channel is not clear, the device may prevent transmitting on the NB channel. The device may prevent avoiding the NB channel after the first time that the NB channel is not clear. If the NB channel remains not clear (such as over a number of CCAs for the NB channel), the device may avoid the NB channel by removing the NB channel for FH for an amount of time. In some implementations, the device may be configured to perform frame based equipment (FBE) CCAs for one or more NB channels.