WLAN Resource Allocation via Request Count Broadcasting
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Solution Overview
Problem
In WLAN systems supporting multi-user transmission schemes, collisions during resource allocation requests lead to decreased wireless resource efficiency and increased service delay due to the limited number of antennas used by access points, which cannot accommodate the greater number of stations requesting resources simultaneously.
Innovation Solution
The proposed method involves an access point broadcasting a resource allocation request count, allowing only a specified number of stations to transmit resource allocation requests based on available antennas, thereby preventing collisions and optimizing resource allocation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a multi-user transmission scheme is supported with multiple antennas, then the data rate and spectral efficiency are improved, but the number of stations that can simultaneously request resources is limited by the number of antennas
Solution Approach 1:
The patent introduces a new dimension for resource allocation by allowing multiple resource allocation requests to be transmitted on different channels simultaneously. Instead of limiting the number of simultaneous requests to the number of antennas, the system enables stations to request resources on different channels, effectively adding a channel dimension to the resource allocation process. This resolves the contradiction by decoupling the limitation from the antenna count and introducing channel diversity as an additional degree of freedom.
2Speed
If multiple stations transmit resource allocation requests simultaneously, then the service speed is improved, but collisions occur leading to decreased wireless resource efficiency
Solution Approach 1:
The patent segments the resource allocation request process by assigning different channels to different stations. Instead of having all stations compete on a single channel where collisions occur, the system divides the request mechanism into multiple parallel channels. This segmentation eliminates collisions while maintaining simultaneous transmission capability, thus preserving service speed without sacrificing wireless resource efficiency.
3Device complexity
If the access point uses a limited number of antennas for resource allocation, then the device complexity is reduced, but the number of stations that can be served simultaneously is limited
Solution Approach 1:
The patent resolves this contradiction by introducing the channel dimension as an additional resource for accommodating multiple stations. Instead of increasing the number of antennas to serve more stations simultaneously, the system utilizes multiple channels to provide the necessary capacity. This allows the access point to maintain a limited number of antennas while still serving a larger number of stations by allocating different channels to different stations for resource allocation requests.
Data Source
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AI summary
The present disclosure relates to a pre-5th-Generation (5G) or 5G communication system to be provided for supporting higher data rates Beyond 4th-Generation (4G) communication system such as a Long Term Evolution (LTE).A method for operating a resource in a first device in a wireless local area network (WLAN) system supporting a multi-user transmission scheme is provided.The method includes determining a number of resource allocation request messages acceptable at a timing point; and transmitting information related to the number of resource allocation request messages, wherein a resource allocation request message is acceptable if the first device is capable of allocating a resource to a second device that transmits the resource allocation request message at the timing point.