Relay Data Frame Synchronization for Asynchronous Transmission
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Solution Overview
Problem
The existing wireless communication systems face inefficiencies in data transmission due to unstable radio links, which can reduce the number of terminals a base station can communicate with simultaneously and decrease coverage, especially when bandwidth increases.
Innovation Solution
A relay system that selects a radio link with a better channel state to transmit data, allocates radio resources, and synchronously transmits data and map information using the same data frame to improve data transmission efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If bandwidth for data transmission is increased, then data transmission capacity is improved, but the number of terminals that can simultaneously communicate is reduced
Solution Approach 1:
The system segments the communication path by introducing relay nodes that divide the network into multiple hops. This allows bandwidth to be shared across different segments simultaneously, enabling high-capacity transmission on one segment while maintaining connectivity for multiple terminals through other segments.
Solution Approach 2:
The patent introduces a spatial dimension to resource allocation by assigning different radio resources to different hops in the relay path. This multi-dimensional resource allocation allows simultaneous high-bandwidth transmission across multiple terminals by utilizing different resource dimensions at different network levels.
2Productivity
If bandwidth for data transmission is increased, then data transmission capacity is improved, but coverage area is reduced
Solution Approach 1:
Relay nodes segment the coverage area into multiple zones, each capable of high-bandwidth transmission. The overall coverage is maintained by chaining these segments together, allowing high data capacity in each segment while extending total coverage through the relay chain.
Solution Approach 2:
Relay nodes act as intermediaries that receive high-bandwidth transmissions from base stations and retransmit to terminals in extended coverage areas. This intermediary function enables high-capacity transmission without requiring direct high-power transmission to distant terminals, thus maintaining both capacity and coverage.
3Adaptability or versatility
If data and map information are transmitted asynchronously, then transmission flexibility is improved, but binding and synchronization at the relay becomes difficult
Solution Approach 1:
The system performs preliminary binding of data and map information at the base station before transmission to the relay. This pre-binding action includes embedding identification information that allows the relay to correctly associate the information without complex asynchronous handling, maintaining flexibility while reducing relay complexity.
Solution Approach 2:
The system uses feedback mechanisms where the relay receives binding information from the base station and uses this feedback to correctly synchronize and process asynchronous transmissions. The feedback loop ensures that even with asynchronous transmission, the relay can maintain proper association between data and map information.
Data Source
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AI summary
A relay including a receiver to receive from a base station, data, a first data frame, and a second data frame, the first data frame includes data and data transmission time information associated with the data, and the second data frame includes map information corresponding to the data and map information transmission time information associated with the map information; a data frame computation unit to compute a third data frame and a fourth data frame, wherein the third data frame is used to transmit the data to a terminal and the fourth data frame is used to transmit the map information to the terminal; and a transmitter to transmit the data to the terminal using the map information when the third data frame is the same as the fourth data frame.