Wireless Resource Allocation Group Bitmap
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Solution Overview
Problem
Current wireless communication systems, particularly next-generation WLAN systems like IEEE 802.11ax, face inefficiencies in signal transmission due to inadequate resource allocation methods, which affect data transmission rates and bandwidth utilization.
Innovation Solution
A method and apparatus for efficient signal transmission in a wireless LAN system using Orthogonal Frequency Division Multiple Access (OFDMA) or Multi-User MIMO (MU-MIMO) schemes, where resource allocation information including a group ID, resource allocation bitmap, and order information are transmitted to multiple stations, allowing for optimized resource allocation and data transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If resource allocation is performed for each individual STA, then resource allocation precision is improved, but device complexity and signaling overhead increase
Solution Approach 1:
The resource allocation process is segmented into two levels: group-level allocation using a common resource allocation bitmap for all STAs in a group, and individual-level allocation through order information that specifies the allocation sequence for each STA. This segmentation allows the system to maintain precision while reducing complexity by handling common resources at the group level.
Solution Approach 2:
Multiple STAs are merged into a single group identified by a common group ID, and they share a common resource allocation bitmap. This merging reduces the overall complexity of resource allocation while maintaining individual precision through the order information field that disambiguates specific STA assignments within the group context.
2Measurement precision
If resource allocation information is transmitted to each STA individually, then measurement precision is improved, but loss of time increases due to repeated signaling
Solution Approach 1:
Resource allocation information is merged into a single transmission containing a common resource allocation bitmap and order information that serves all STAs in the group simultaneously. This eliminates the need for repeated individual signaling to each STA, reducing time loss while maintaining allocation accuracy through the structured format that includes group ID, bitmap, and order fields.
Solution Approach 2:
The resource allocation bitmap serves a universal function for all STAs in the group, defining resource assignments that apply to multiple devices. The order information field provides the additional functionality of specifying which STA receives which resource from the common allocation, making the system multi-functional and efficient.
3Adaptability or versatility
If flexible resource allocation is implemented, then adaptability is improved, but device complexity increases
Solution Approach 1:
The system implements dynamic resource allocation flexibility through the order information field, which can specify different allocation sequences for different groups and scenarios. The resource allocation bitmap dynamically adapts to group sizes and resource availability, providing versatility while maintaining manageable complexity through standardized field formats and interpretation rules.
Data Source
AI summary
The present document is for flexibly resource allocation in a wireless LAN system. To this end, an STA prepares resource allocation information in which data is to be transmitted to a plurality of STAs by using an orthogonal frequency divisional multiple access (OFDMA) scheme or a multiple user MIMO (MU-MIMO) scheme, and transmits the data to the plurality of STAs according to the resource allocation information. The resource allocation information preferably includes a group ID indicating the plurality of STAs, a resource allocation bitmap having a format in common with the plurality of STAs, resource allocation information for each of the plurality of STAs and resource allocation sequence information indicating a resource allocation order of the STAs in the group.