Radio Communication Apparatus TXOP Frame Aggregation
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Solution Overview
Problem
In IEEE 802.11 standards, a TXOP holder can only provide instructions for frame transmission to individual terminal apparatuses, limiting the ability to transmit instructions to multiple terminal apparatuses simultaneously, especially in multi-access scenarios like IEEE 802.11ax.
Innovation Solution
A radio communication apparatus is designed to efficiently transmit instructions for frame transmission to multiple terminal apparatuses by utilizing a TXOP holder, allowing simultaneous access to the radio medium through advanced frame structures and resource allocation techniques, such as OFDMA and MU-MIMO, enabling multiple terminal apparatuses to access the medium concurrently.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a TXOP holder provides instructions to individual terminal apparatuses one by one, then each terminal apparatus can receive instructions reliably, but the time required to instruct multiple terminal apparatuses increases significantly
Solution Approach 1:
The patent combines multiple individual instructions into a single aggregated instruction frame. The TXOP holder transmits one frame containing instructions for multiple terminal apparatuses simultaneously, rather than sending separate frames to each terminal. This merging approach maintains reliable delivery through standardized frame structures while dramatically reducing the time required to instruct multiple terminals.
Solution Approach 2:
The instruction frame is segmented into multiple independent instruction fields, where each field contains an instruction for a specific terminal apparatus identified by its terminal ID. This segmentation allows the receiving terminals to efficiently extract only their own instructions from the aggregated frame, maintaining reliability for each terminal while enabling parallel instruction delivery to multiple terminals in a single transmission.
2Productivity
If the TXOP holder transmits frames to multiple terminal apparatuses simultaneously, then network throughput improves, but the frame structure and resource allocation complexity increases
Solution Approach 1:
The patent creates a universal instruction frame structure that can serve multiple terminal apparatuses simultaneously. A single frame format with standardized fields (terminal ID, instruction type, parameters) can accommodate instructions for any number of terminals by simply adding more instruction fields. This multi-functional design enables simultaneous transmission to multiple terminals without requiring different frame structures for different scenarios, thus improving throughput while controlling complexity through standardization.
Solution Approach 2:
The patent resolves complexity by organizing multiple instructions in a dimensional structure within the frame - using terminal IDs as identifiers to index into specific instruction fields. This dimensional organization (terminal ID → instruction field mapping) allows efficient access and processing of individual instructions within the aggregated frame, enabling simultaneous multi-terminal communication while maintaining manageable frame structure through systematic field organization.
Data Source
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AI summary
A radio communication apparatus that is a transmission opportunity holder efficiently transmits an instruction of frame transmission, to multiple terminal apparatuses. A radio communication apparatus of the present invention includes a transmission unit configured to transmit a first frame to obtain a TXOP, transmit a Trigger frame providing an instruction of transmission of a second frame addressed to the radio communication apparatus itself, to at least one of the multiple terminal apparatuses in the TXOP, and transmit a third frame addressed to at least one of the multiple terminal apparatuses in the TXOP. A value indicating a TXOP that is written in the second frame and that the third frame is to obtain is different from a value obtained by dividing a value indicating the TXOP written in the first frame by a value indicating a duration elapsed from start of transmission of the first frame to communication completion of the second frame.