Trigger Frame Resource Allocation for 320 MHz Uplink
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The challenge is to enable a trigger frame to trigger uplink transmission in a bandwidth greater than 160 MHz while maintaining compatibility with both 802.11ax and 802.11be standards, which have different maximum transmission bandwidths.
Innovation Solution
A communication method and apparatus that generates a trigger frame with specific user information fields to allocate frequency domain resources across primary and secondary 160 MHz channels, allowing uplink transmission in a 320 MHz bandwidth without adding extra bits, ensuring compatibility with both standards.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the trigger frame is modified to support 320 MHz bandwidth allocation, then the capability to trigger uplink transmission in bandwidth greater than 160 MHz is improved, but the compatibility with 802.11ax standard is worsened
Solution Approach 1:
The trigger frame is segmented into multiple user information fields, where the first user information field indicates the 160 MHz channel location and the fourth user information fields indicate resource unit allocations. This segmentation allows the frame to carry both 802.11ax compatible information and extended 320 MHz bandwidth information without requiring a complete frame structure redesign.
Solution Approach 2:
The resource unit allocation subfield is designed to serve dual purposes: it can indicate resource units within a single 160 MHz channel (for 802.11ax compatibility) or across multiple 160 MHz channels (for 320 MHz support). The first user information field acts as a universal indicator that can point to either primary or secondary 160 MHz channels, making the trigger frame universally applicable to both standards.
2Adaptability or versatility
If additional bits are added to the resource unit allocation subfield to indicate 320 MHz resource allocation, then the bandwidth indication capability is improved, but the trigger frame structure complexity is worsened
Solution Approach 1:
Instead of adding bits within the existing resource unit allocation subfield (horizontal expansion), the solution adds a new dimension by introducing the first user information field that indicates channel location. This vertical dimension allows the same resource unit allocation subfield to be interpreted differently based on the channel location context, avoiding bit expansion while achieving 320 MHz coverage.
Solution Approach 2:
The first user information field acts as an intermediary between the trigger frame and the resource unit allocation subfields. It provides contextual information about which 160 MHz channel the resource units belong to, allowing the resource unit allocation subfield to maintain its original bit structure while achieving extended bandwidth indication through the combination of multiple fourth user information fields.
Data Source
AI summary
This application provides a communication method and apparatus, and relates to the field of communication technologies. The method includes: An AP generates a trigger frame, where the trigger frame includes a first user information field, a part or all of a frequency domain resource indicated by a resource unit allocation subfield in a fourth user information field before the first user information field is located on a primary 160 MHz channel, and a part or all of a frequency domain resource indicated by a resource unit allocation subfield in a fourth user information field after the first user information field is located on a secondary 160 MHz channel. Then, the AP sends the trigger frame.