Sequential Response Protocol for MU-MIMO Data Throughput
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Solution Overview
Problem
Current data communication technologies face challenges in efficiently managing data throughput and Quality of Service (QoS) in wireless communication systems, particularly due to limited frequency resources and increased user demand, necessitating improved resource allocation and transmission methods.
Innovation Solution
A data communication method utilizing a sequential response protocol that includes response indexes (RIs) to manage packet transmission sequences and channel allocation among multiple user multiple input and multiple output (MU-MIMO) systems, allowing terminals to adjust packet counts and transmit acknowledgement packets, and using filling packets to recover from transmission errors.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If bandwidth expansion is used to improve data throughput, then data throughput increases, but frequency resources are limited and cannot be expanded further
Solution Approach 1:
The patent transitions from single-user single-stream communication to multi-user multi-stream MU-MIMO communication, adding spatial dimensions to the communication system. By utilizing multiple antennas at both transmitter and receiver ends, the system creates parallel spatial channels that multiply the effective throughput without requiring additional frequency resources.
Solution Approach 2:
The patent segments the communication channel into multiple independent spatial streams that can be simultaneously transmitted to different users. Each user receives a dedicated stream through spatial multiplexing, allowing the total system throughput to be the sum of individual user throughputs while using the same frequency band.
2Productivity
If MU-MIMO scheme is adopted to share wireless resources among multiple terminals, then resource utilization improves, but transmission reliability becomes more difficult to manage due to sequential response coordination
Solution Approach 1:
The access point performs preliminary actions by pre-calculating and assigning response indexes to each terminal before actual data transmission. This pre-arranged coordination ensures that each terminal knows its designated response timing and sequence, preventing collisions and ensuring reliable acknowledgment reception even in multi-user simultaneous transmission scenarios.
Solution Approach 2:
The patent implements a feedback mechanism where terminals send acknowledgment responses in a predetermined sequence based on assigned response indexes. The access point receives these feedback signals in an organized manner, allowing it to track which terminals have successfully received data and which require retransmission, thereby maintaining transmission reliability.
3Reliability
If sequential response protocol is used to coordinate terminal responses, then transmission reliability improves, but system complexity increases due to packet count management and filling packet requirements
Solution Approach 1:
The access point acts as an intermediary that centralizes the management of response coordination. It assigns response indexes to terminals, tracks packet counts, and sends filling packets when necessary. This centralized mediation simplifies the overall system by concentrating complexity in the access point rather than distributing it across all terminals, making the protocol more manageable.
4Productivity
If multiple terminals transmit responses simultaneously via the same channel, then channel distribution efficiency improves, but response collision and error probability increase
Solution Approach 1:
The access point performs preliminary assignment of response indexes to each terminal before simultaneous transmission begins. This pre-coordination ensures that even though terminals transmit responses simultaneously, they do so in an organized sequence determined by their assigned indexes, preventing collisions and maintaining reliability while achieving efficient channel utilization.
Data Source
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AI summary
Provided is a data communication method and apparatus based on a sequential response protocol that is applicable to a multiple user multiple input and multiple output (MU-MIMO) system. The data communication apparatus may include response indexes (RIs) with respect to multiple terminals in at least one spatio-temporal stream to be transmitted to the multiple terminals, and the response indexes may be information associated with a transmission sequence of data to be transmitted by the multiple terminals.