Resource Reservation Request Segmentation in Wi-Fi Systems
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Solution Overview
Problem
Existing resource reservation methods in Wi-Fi systems face low transmission reliability due to large frame lengths of resource reservation request messages, which reduce the success rate of data transmission.
Innovation Solution
A method that divides the resource reservation request message into a generic identifier-scrambled first message and unique identifier-scrambled second messages, each targeting specific user equipment, to reduce frame length and increase reception probability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the resource reservation request message (MU-RTS) includes identifiers of all target STAs and specific channel information, then the resource reservation function is complete, but the frame length becomes large, reducing transmission reliability
Solution Approach 1:
The patent segments the traditional single MU-RTS frame into multiple smaller frames: a first resource reservation request frame sent by the AP, and multiple second resource reservation request frames sent individually to each target STA. This segmentation reduces the length of each frame, improving transmission reliability while maintaining complete resource reservation functionality through coordinated transmission of multiple shorter frames instead of one long frame containing all STA identifiers and channel information
2Reliability
If a single broadcast MU-RTS frame is used for all target STAs, then the resource reservation process is simplified, but the frame length increases, affecting the probability of correct reception
Solution Approach 1:
The patent divides the resource reservation request into multiple smaller frames rather than using a single broadcast frame. The first frame is broadcast to all STAs, while subsequent frames are individually addressed to specific target STAs. This segmentation ensures that each frame remains within a manageable length, significantly improving the probability of correct reception while the coordinated transmission of multiple frames achieves the complete resource reservation function
Solution Approach 2:
The patent introduces an intermediary mechanism where the AP first sends a general resource reservation request frame to announce the reservation, and then sends individual confirmation frames to each target STA. This two-stage intermediary approach ensures reliable delivery by breaking down the complex information transfer into manageable steps, improving reception probability while maintaining systematic control over the resource reservation process
Data Source
AI summary
A resource reservation method includes that a network device generates a resource reservation request message (RRQ), where the RRQ includes one first RRQ (RRQ 1) and N second resource RRQs (RRQs 2), the RRQ 1 includes information indicating that a time for which the network device occupies a target channel is first duration, the N RRQs 2 are in a one-to-one correspondence with N user equipments (UEs) and request the N UEs to transmit data to the network device in the first duration, and N>1.