Wi-Fi Trigger Frame Encoding for Multi-Resource Unit Allocation
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Solution Overview
Problem
In wireless local area networks, the inefficient frequency utilization due to stations occupying entire channels for uplink data transmission and the challenge of allocating varying data sizes to stations using OFDMA technology.
Innovation Solution
A resource allocation method that allows stations to receive trigger frames with user information fields matching their association identifiers, enabling the allocation of multiple resource units efficiently, reducing the number of fields required and processing load.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple user information fields are used to allocate resource units to stations with different data sizes, then resource allocation flexibility is improved, but trigger frame size and processing complexity increase
Solution Approach 1:
The patent makes the resource unit allocation subfield universal by enabling it to indicate multiple resource units through different encoding schemes. The subfield can represent a single resource unit using traditional methods or multiple resource units by interpreting the same field with extended meaning, allowing one field to serve multiple allocation scenarios without requiring additional fields for each resource unit.
Solution Approach 2:
The patent changes the interpretation parameters of the resource unit allocation subfield. By modifying how the bits in this subfield are decoded (e.g., using different mapping relationships between bit patterns and resource unit combinations), the system can dynamically adapt to allocate different numbers and types of resource units based on station requirements, all within the same field structure.
2Quantity of substance
If one user information field indicates multiple resource units, then trigger frame size is reduced, but the complexity of the allocation subfield increases
Solution Approach 1:
The patent merges the function of multiple resource unit allocations into a single user information field. Instead of having separate fields for each resource unit assignment, the resource unit allocation subfield within one user information field is designed to encode multiple resource unit indications, thereby consolidating what would traditionally require multiple fields into one compact structure.
Solution Approach 2:
The patent adds a dimensional layer to the resource unit allocation subfield by introducing a resource unit combination indication that works alongside the traditional resource unit indication. This creates a two-dimensional encoding space where the same subfield can simultaneously convey information about which resource units are allocated and how they are combined, effectively packing more information into the same bit space.
Data Source
AI summary
The embodiments of the application provides a resource allocation method. In an example method, a trigger frame is sent by an access point to a station. The trigger frame includes one user information field, and the user information field may indicate a plurality of resource units allocated to the station. The technical solutions provided in this application may be applied to Wi-Fi systems such as 802.11ax and 802.11be.