Multi-Rate Multi-Response Aggregation for Wireless Latency
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Solution Overview
Problem
Current high throughput wireless network aggregation technologies, such as MMRA, lack support for immediate responses, leading to excessive latency and inability to meet QoS requirements for latency-sensitive applications like WVoIP due to lack of scheduling and protection mechanisms for multiple responses.
Innovation Solution
The introduction of multi-rate multi-response, multi-receiver aggregation (MRMRMRA) which includes suspension and resumption of bursting, channel reservation, and multi-response scheduling, allowing for low-overhead immediate responses and minimizing latency by incorporating acknowledgement and bidirectional data handling.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If MMRA aggregation is used to aggregate frames for multiple receivers of various rates, then the ability to aggregate frames for receivers in a wide range of distances is improved, but the support for immediate responses is lost, causing excessive latency
Solution Approach 1:
The patent segments the MMRA aggregation process into two distinct phases: a first phase for aggregating frames to multiple receivers of the same rate, and a second phase for aggregating frames to multiple receivers of various rates. This segmentation allows the system to maintain immediate responses for same-rate receivers while still providing multi-rate aggregation capability for receivers at different distances, thereby resolving the latency issue without sacrificing adaptability.
2Device complexity
If MMRA aggregation is used without response scheduling, then the simplicity of the aggregation mechanism is maintained, but the ability to meet QoS requirements for latency-sensitive applications is lost
Solution Approach 1:
The patent implements preliminary action by scheduling multiple responses at the time of frame aggregation. The initiator includes scheduling information in the aggregation header that specifies when each receiver should send its acknowledgment or data response. This allows the system to prepare response timing information in advance during the aggregation process, ensuring QoS requirements are met without adding significant complexity to the aggregation mechanism itself.
3Productivity
If MRMRA aggregation is used to enable immediate responses, then the MAC efficiency for QoS sensitive applications is improved, but the ability to aggregate frames for receivers in a wide range of distances is limited
Solution Approach 1:
The patent divides the aggregation process into two segments: first aggregating frames to multiple receivers of the same rate (enabling immediate responses and high MAC efficiency), then aggregating frames to multiple receivers of various rates (extending support to receivers at different distances). This segmentation allows the system to achieve both high productivity for QoS-sensitive applications and broad adaptability for diverse receiver scenarios.
4Device complexity
If scheduling multiple responses after the end of bursting is used, then the simplicity of response scheduling is maintained, but excessive latency is introduced, making QoS requirements hard to meet
Solution Approach 1:
The patent applies preliminary action by incorporating scheduling information directly into the aggregation header at the time of frame transmission. This allows the initiator to specify response timing for multiple receivers in advance, before the bursting completes. The scheduled responses are then collected and processed after the burst, combining the simplicity of post-burst processing with the low latency benefit of pre-scheduled responses, thereby meeting QoS requirements without excessive complexity.
Data Source
AI summary
A method for sending a multi-rate multi-receiver message containing a multi-receiver multi-response aggregate. The multi-rate multi-receiver aggregate is transmitted until a multi-receiver multi-response aggregate embedded within the multi-rate multi-receiver aggregate is encountered. Transmission of the multi-rate multi-receiver aggregate is suspended for a predetermined time period. After the expiration of the predetermined time period, transmission of the multi-rate multi-receiver aggregate resumes.