Wireless Uplink RU Allocation for Simultaneous Multi-Station Transmissions
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Solution Overview
Problem
Existing wireless communication methods, particularly under the WiFi mechanism, face inefficiencies in determining uplink parameters due to time-consuming and complex calculations, which hinder immediate uplink transmissions after downlink transmissions, especially in multi-station scenarios.
Innovation Solution
A wireless communication method and device that determine target stations for uplink transmissions, calculate their number, allocate resource units based on pre-recorded reference information, and generate trigger frames with uplink parameters to efficiently manage uplink communications.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the polling method (Block ACK Request) is used to allow stations to reply in sequence, then the AP can obtain Block ACK information from multiple stations, but the polling process causes inefficiencies and increases time consumption
Solution Approach 1:
The patent applies preliminary action by pre-calculating and pre-recording reference allocation information (including RU allocation schemes) before the actual uplink transmission. The AP determines target stations and prepares resource allocation in advance, so that when uplink transmission is needed, the stations can immediately transmit without waiting for sequential polling, thus resolving the contradiction between obtaining reliable Block ACK information and maintaining high transmission efficiency
Solution Approach 2:
The patent merges the functions of station selection, resource allocation calculation, and trigger frame generation into a single efficient process. By combining these operations and using pre-recorded reference allocation information, the system achieves both reliable acquisition of Block ACK information from multiple stations and high transmission efficiency through simultaneous uplink transmissions
2Measurement precision
If conventional methods are used to determine uplink parameters, then appropriate parameters can be obtained, but the process is time-consuming and requires complicated calculations
Solution Approach 1:
The patent applies preliminary action by pre-calculating and storing reference allocation information including various RU allocation schemes corresponding to different numbers of target stations. When determining uplink parameters, the AP simply needs to query the pre-recorded information based on the actual number of target stations, rather than performing complicated real-time calculations. This maintains parameter accuracy while dramatically reducing determination time
Solution Approach 2:
The patent applies preliminary action by pre-calculating and storing reference allocation information including various RU allocation schemes corresponding to different numbers of target stations. When determining uplink parameters, the AP simply needs to query the pre-recorded information based on the actual number of target stations, rather than performing complicated real-time calculations. This maintains parameter accuracy while dramatically reducing determination time
3Productivity
If multiple stations perform uplink transmission at the same time, then transmission efficiency is improved, but appropriate resource allocation requires complicated calculations
Solution Approach 1:
The patent applies preliminary action by pre-recording multiple reference allocation schemes that correspond to different numbers of target stations (e.g., 1st reference allocation scheme for 1 station, 2nd scheme for 2 stations, etc.). When multiple stations need to transmit simultaneously, the AP simply queries the appropriate pre-recorded scheme based on the actual number of target stations, avoiding complicated real-time allocation calculations while maintaining efficient simultaneous transmissions
Solution Approach 2:
The patent uses parameter changes by organizing reference allocation information with different RU allocation schemes corresponding to different numbers of target stations. The system changes the allocation parameters based on the actual number of stations by selecting from pre-defined schemes, simplifying the resource allocation process while supporting efficient simultaneous uplink transmissions from multiple stations
Data Source
AI summary
A wireless communication method, applied to a wireless communication device to decide uplink parameters, comprising: (a) determining which one of candidate stations can be at least one target station which can perform uplink transmissions to the wireless communication device; (b) calculating a number of the target station; (c) allocating at least one RU (Resource Unit) to the target station according to the number and pre-recorded reference allocation information, to generate the uplink parameters comprising RU allocation parameters; and (d) generating a trigger frame comprising the uplink parameters and transmitting the trigger frame to the target station.