Dual Hopping Pattern System for Wireless Data Transmission
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing data transmission systems using time and/or frequency hopping patterns face interference issues when multiple nodes transmit simultaneously, leading to overlapping and potential cancellation of data packets, particularly when the same hopping pattern is used by multiple nodes.
Innovation Solution
Implementing a dual hopping pattern system where data is transmitted using a first hopping pattern and repeatedly using a second hopping pattern, with each pattern being a time or frequency hopping pattern, or a combination of both, to minimize overlap and interference by shifting and interleaving the patterns in time and frequency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the same time and/or frequency hopping pattern is used by multiple nodes for data transmission, then the device complexity is reduced and ease of operation is improved, but the transmission reliability deteriorates due to packet overlap and interference
Solution Approach 1:
The patent changes the hopping pattern parameters by introducing a node-specific offset value that modifies the base hopping pattern. Each node calculates its unique hopping pattern by adding its offset to the base pattern, thereby differentiating their transmission patterns while maintaining a common base structure. This resolves the contradiction by preserving operational simplicity through the base pattern while ensuring transmission reliability through node-specific differentiation.
Solution Approach 2:
The patent segments the hopping pattern into two components: a common base hopping pattern known to all nodes, and a node-specific offset component. This segmentation allows the system to maintain a simple common framework while introducing individual variations to prevent interference, thus resolving the contradiction between ease of operation and transmission reliability.
2Productivity
If multiple nodes transmit data simultaneously using the same hopping pattern, then the productivity of the communication system is improved, but the transmission reliability deteriorates due to interference and packet cancellation
Solution Approach 1:
The patent modifies the hopping pattern parameters by incorporating a node-specific offset that shifts the time and/or frequency positions of hops for each node. This parameter change allows multiple nodes to transmit simultaneously with differentiated patterns, preventing packet overlap and interference while maintaining high system productivity.
Solution Approach 2:
The patent introduces asymmetry into the otherwise symmetric hopping pattern by adding node-specific offsets. Each node's transmission pattern becomes asymmetric relative to others, with unique time-frequency positioning that prevents collision while allowing simultaneous transmission, thus resolving the contradiction between productivity and reliability.
3Ease of operation
If global time and frequency hopping patterns are defined for all participants, then the ease of operation is improved and coordination is simplified, but the transmission reliability deteriorates when multiple nodes use identical patterns
Solution Approach 1:
The patent changes the hopping pattern parameters by adding a node-specific offset to the global base pattern. This allows all nodes to operate from the same global reference (maintaining ease of operation) while each node's actual transmission pattern is differentiated through parameter modification (ensuring reliability).
Solution Approach 2:
The global base hopping pattern serves as an intermediary framework that coordinates all nodes, while node-specific offsets act as mediators that differentiate individual transmissions. This two-level structure maintains the benefits of global coordination while preventing interference through local differentiation.
Data Source
Figure 1
Figure 2
Figure 3
AI summary
In exemplary embodiments, data transmitters and data receivers use a first jump pattern and a second jump pattern in a first mode for repeated data transmission, and a third jump pattern in a second mode for single data transmission, wherein the jump patterns of the first mode and the second mode are different, so that the probability of collision during simultaneous data transmission by another data transmitter in a different mode can be reduced, thus increasing transmission reliability.