Wireless LAN Control Field Resource Allocation
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Next-generation wireless local area networks (WLANs) face challenges in improving spectrum efficiency and area throughput, especially in dense environments with multiple access points and stations, and outdoor settings, where existing technologies struggle to enhance performance and manage resource allocation effectively.
Innovation Solution
A control field is constructed in a WLAN system using multiple channels or frequency bands, incorporating resource units (RUs) to optimize resource allocation and transmission efficiency, allowing for improved management of wireless communication resources across multiple users and frequency bands.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If resource allocation information is transmitted for each resource unit in HE-SIG-B, then resource allocation precision is improved, but control field complexity increases
Solution Approach 1:
The control field is segmented into multiple parts: a first control field (HE-SIG-B) that is repeated across multiple frequency bands, and a second control field that provides additional resource allocation information. This segmentation allows precise resource allocation while managing complexity through structured division of information.
Solution Approach 2:
The patent extends resource allocation information transmission from a single frequency band to multiple frequency bands (20MHz, 40MHz, 80MHz). By adding the frequency band dimension, the system achieves comprehensive resource allocation across the entire spectrum while maintaining organized control field structure.
2Reliability
If control field information is repeated across multiple frequency bands, then information reliability is improved, but transmission overhead increases
Solution Approach 1:
The control field information is segmented into essential parameters that are repeated across frequency bands, and supplementary parameters that are provided selectively. This segmentation ensures reliable transmission of critical information while minimizing redundant data transmission.
Solution Approach 2:
The patent applies partial repetition of control field information - only the necessary portions are repeated across frequency bands, while additional resource allocation details are provided selectively based on the specific frequency band configuration and resource allocation needs.
Data Source
Figure 1
Figure 2
Figure 3
AI summary
Provided is a control field comprising allocation information about resource units (RUs) in a wireless LAN system in which a plurality of RUs are supported. A control field comprising allocation information about RUs can be comprised in an uplink or downlink PPDU and can be designed in accordance with a plurality of frequency bands. A control field corresponding to a particular frequency band can be duplicated over another frequency band. Also, the control field corresponding to the particular frequency band can be used for scheduling of a data field corresponding to the same frequency band and a data field corresponding to another frequency band.