MU EDCA Channel Access for Emergency WLAN Priority Requests
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing communication systems for emergency preparedness services (EPCS) face challenges in ensuring rapid channel access and priority transmission during crisis scenarios, as the wireless local area network standard 802.11be does not adequately address the need for priority access mechanisms.
Innovation Solution
A communication method and apparatus that utilizes MU EDCA parameters in request and response frames to enable stations to perform channel contention with higher priority access, maintaining fairness with legacy stations and optimizing channel access for emergency services.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If a user equipment camps on a frequency with a small bandwidth to save power, then power consumption is reduced, but the frequency may not be the uplink frequency, requiring additional signaling to indicate the actual uplink frequency
Solution Approach 1:
The network side pre-configures multiple frequency information items including both SIB frequencies and uplink frequencies in the RRC release message. The user equipment performs camping detection on these pre-configured frequencies, and when camping on a non-uplink frequency, the pre-configured uplink frequency information enables direct uplink transmission without additional signaling
Solution Approach 2:
The RRC release message acts as an intermediary carrier that transports uplink frequency information from the network side to the user equipment. This pre-configured information serves as a mediator that bridges the gap between camping frequency and uplink frequency, eliminating the need for additional direct signaling when frequencies differ
2Ease of operation
If the network side indicates the frequency for camping detection through SIB, then the indicated frequency may not be the uplink frequency, requiring additional signaling to indicate the actual uplink frequency
Solution Approach 1:
The network side merges multiple frequency information items (SIB frequencies and uplink frequencies) into a single RRC release message. This consolidation allows the user equipment to obtain both camping detection frequencies and uplink frequencies in one signaling event, eliminating the need for separate additional signaling
3Use of energy by moving object
If the user equipment camped on the uplink frequency directly, then no additional signaling is needed, but the user equipment cannot achieve power saving by camping on a frequency with small bandwidth
Solution Approach 1:
The network side pre-configures uplink frequency information in the RRC release message before the user equipment camps on the small bandwidth frequency. This preliminary provision of uplink frequency information ensures that even though the user equipment camps on a power-saving frequency, the uplink transmission parameters are already known, maintaining communication reliability without requiring additional signaling
Data Source
Figure 1A
Figure 1B~1C
Figure 2~3
AI summary
Embodiments of this application disclose a communication method, to optimize a channel access parameter. The method includes: A first station sends a request frame to an access point. The request frame is used to request to obtain a channel priority access right. The request frame carries a first parameter set. The first parameter set includes MU EDCA parameters that the first station intends to use to perform channel contention. The first station receives a response frame for the request frame. The first station is an EPCS station. The first station performs channel access by using an MU EDCA mechanism. In embodiments of this application, the first parameter set includes the MU EDCA parameters that the first station intends to use to perform channel contention. The request frame carrying the first parameter set is sent. In this way, channel contention is performed by using parameters with a higher channel access priority.