Piggybacking Allocation Frames in Wireless Transmit Opportunities
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Solution Overview
Problem
Current wireless communication systems face challenges in efficiently scheduling simultaneous transmissions from multiple wireless nodes in SDMA systems, leading to inefficiencies in bandwidth usage and increased transmission times due to separate contention for uplink resources.
Innovation Solution
The method involves piggybacking Allocation Indication (AI) and Allocation Response (AR) frames onto existing uplink and downlink transmit opportunities (TXOPs), eliminating the need for separate contention and improving transmission efficiency by aggregating information within existing frames.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of time
If separate contention frames are used for uplink resource requests in SDMA systems, then resource allocation can be achieved, but transmission time increases and bandwidth efficiency decreases
Solution Approach 1:
The patent combines uplink data transmissions with resource request frames by allowing stations to piggyback resource requests onto their uplink data transmissions. This merging eliminates separate contention frames, reducing transmission time and improving bandwidth efficiency while maintaining resource allocation capabilities.
Solution Approach 2:
The uplink transmit opportunity is designed to serve multiple functions simultaneously: carrying both data transmissions and resource requests. This multi-functionality allows the same transmission opportunity to fulfill both data delivery and resource allocation purposes, eliminating the need for separate contention frames.
2Loss of information
If multiple separate frames are transmitted for allocation indication and response, then complete scheduling information can be conveyed, but the number of transmissions increases reducing overall efficiency
Solution Approach 1:
The patent merges allocation indication frames and allocation response frames into a single integrated transmission opportunity. The access point can convey both the allocation indication and the response within the same uplink TXOP, reducing the number of separate transmissions while maintaining complete scheduling information.
Solution Approach 2:
The scheduling process maintains continuity by eliminating gaps between separate frame transmissions. The allocation indication and response are conveyed in a continuous transmission sequence within the same TXOP, improving efficiency while ensuring complete information transfer.
Data Source
AI summary
Aspects of the present disclosure provide techniques for aggregating certain frame types in uplink and/or downlink transmit opportunities. Such techniques may improve wireless communications system performance by reducing the overall number of transmit opportunities required.