Relay Node Frame Segregation for Spatial Diversity
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Solution Overview
Problem
Existing synchronous meshed networks, particularly in wireless communication systems like 60 GHz radio transmission, face reliability issues due to interference and shadowing, and existing techniques like ARQ and systematic retransmission fail to introduce spatial diversity, leading to inefficiencies and increased latency.
Innovation Solution
A method where a relay node in the network segregates and retransmits data within a frame structure, combining own data and retransmission data, allowing for multiple-path transmission and dual diversity, thereby enhancing reliability and reducing latency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If ARQ technique is used to improve transmission reliability, then retransmission capability is provided, but transfer time becomes variable and network overhead increases
Solution Approach 1:
The patent applies preliminary action by pre-allocating dedicated retransmission time slots in the synchronous frame structure before actual data transmission occurs. Each node is assigned specific time intervals for receiving and retransmitting data, ensuring that retransmission operations are prepared in advance and executed within predetermined time boundaries, thus maintaining constant transfer time while providing reliable retransmission capability.
2Reliability
If ARQ technique is used to improve transmission reliability, then error detection and retransmission are enabled, but network overhead increases due to control signals
Solution Approach 1:
The patent merges data transmission and retransmission functions into a unified synchronous frame structure. The frame includes dedicated fields for both initial data transmission and retransmission, eliminating the need for separate control signals for error detection and retransmission requests. This integration reduces network overhead by combining multiple functions into a single structured protocol.
Solution Approach 2:
The patent extracts the retransmission function from the data transmission process and assigns it to dedicated time slots within the frame structure. By separating retransmission operations into predetermined time intervals, the system eliminates the need for continuous control signaling and reduces network overhead while maintaining reliable error correction capabilities.
3Loss of time
If systematic retransmission technique is used to maintain constant transfer time, then synchronous character is preserved, but spatial diversity is not introduced
Solution Approach 1:
The patent introduces spatial diversity by enabling multiple nodes to participate in the transmission process simultaneously within the synchronous frame structure. Different nodes are assigned different roles (transmitter, receiver, relay) and time slots, creating multiple transmission paths and spatial diversity while maintaining constant transfer time through synchronous coordination.
4Adaptability or versatility
If relay node retransmits data in allocated time intervals, then spatial diversity is introduced, but relay node reactivity decreases
Solution Approach 1:
The patent segments the frame structure into dedicated time intervals for different nodes to transmit their own data and for relay nodes to retransmit received data. This segmentation allows relay nodes to perform retransmission functions without blocking their own data transmission opportunities, maintaining both spatial diversity and relay node reactivity through time-division multiplexing.
Data Source
AI summary
A method of transmitting data in a synchronous communications network, which includes multiple nodes, includes communicating a super frame that includes multiple frames, based on a network cycle, each frame being associated with one of the nodes. Each frame includes a payload that includes an own data section and a repeat data section. The nodes include at least one relay node associated with an application generating own data of the relay node to be transmitted to at least one second node. The relay node receives frames from other of the nodes, reads a predetermined part of data from the received frames, which enables repeat data to be obtained, writes the repeat data in the repeat data section of a new frame, writes the own data of the relay node in the own data section of the new frame, and transmits the new frame.