OBSS Indications for Deterministic Non-Primary Channel Access
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Solution Overview
Problem
Existing wireless communication networks fail to utilize available communication resources efficiently, leading to wasted resources and increased latency due to inefficient channel access procedures, particularly in overlapping basic service sets (OBSS) where devices contend for a primary channel, resulting in asymmetric signaling and lack of determinism in non-primary channel access (NPCA) operations.
Innovation Solution
Wireless devices capable of non-primary channel access (NPCA) exchange frames to communicate indications about OBSS activity, allowing devices to switch to opportunistic channels for communication, thereby optimizing resource utilization and reducing latency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If wireless devices use traditional primary channel access procedures in OBSS, then channel access is simplified, but resource utilization is inefficient and latency increases
Solution Approach 1:
The patent segments the channel access procedure into two parts: primary channel access for synchronization and framing, and non-primary channel access for opportunistic data transmission. This allows devices to efficiently utilize both primary and secondary channels, improving resource utilization while reducing latency through parallel transmission opportunities.
Solution Approach 2:
The patent uses preliminary synchronization signaling on the primary channel to establish timing and framing information before devices attempt opportunistic access on non-primary channels. This preliminary action enables devices to quickly switch to secondary channels without full contention procedures, reducing latency while maintaining efficient resource utilization.
2Productivity
If wireless devices implement non-primary channel access (NPCA) operations, then resource utilization improves, but signaling asymmetry and lack of determinism increase
Solution Approach 1:
The patent implements feedback mechanisms where receiving devices send acknowledgments or indications back to transmitting devices about successful reception on non-primary channels. This feedback loop restores determinism to the asymmetric signaling by providing confirmation that the opportunistic transmission was successful, maintaining reliability while enabling improved resource utilization.
3Ease of operation
If wireless devices contend for primary channel in OBSS, then channel access procedure is standardized, but available communication resources are not fully utilized
Solution Approach 1:
The patent segments channel access into standardized primary channel contention for control signaling and opportunistic non-primary channel access for data transmission. This segmentation maintains the ease of standardized procedures for critical control functions while enabling improved resource utilization through additional transmission opportunities on secondary channels.
Solution Approach 2:
The patent enables wireless devices to perform multiple functions: standardized primary channel access for synchronization and control, plus opportunistic non-primary channel access for data transmission. This multi-functionality allows the same device to operate under standardized procedures while simultaneously utilizing additional resources, improving overall productivity without sacrificing ease of operation.
Data Source
AI summary
This disclosure provides methods, components, devices and systems for indications for non-primary channel access. Various aspects relate generally to communicating an indication relating to a wireless device or signaling (such as a physical layer (PHY) protocol data unit (PPDU)) from an OBSS. Sharing the indication between wireless devices may facilitate non-primary channel access (NPCA). Some aspects more specifically relate to a first wireless device that may receive a portion of a PPDU communicated by a third wireless device in an OBSS. The portion of the PPDU may indicate that the third wireless device is included in the OBSS. The first wireless device may transmit a frame including an indication to a second wireless device. The first wireless device and the second wireless device may be included in a BSS and may utilize the indication to perform NPCA on an opportunistic primary channel.