Wireless Communication Relay Probability for Emergency Channel Congestion
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Solution Overview
Problem
In wireless communication systems, particularly in emergency situations involving vehicles, the dissemination of emergency-related information can lead to traffic congestion due to multiple vehicles forwarding this information, causing channel load and congestion.
Innovation Solution
A wireless device determines the density of neighboring devices and calculates a probability for relaying emergency-related information based on this density, deciding whether to relay the information accordingly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple neighboring vehicles forward emergency-related information to the network, then the emergency information dissemination coverage is improved, but traffic congestion and channel load increase
Solution Approach 1:
The patent applies partial action by having only a subset of neighboring vehicles relay emergency information based on calculated probabilities, rather than all vehicles relaying unconditionally. This selective relaying reduces redundant transmissions and channel load while still ensuring adequate emergency information dissemination coverage through the cumulative effect of multiple probabilistic relays.
2Speed
If all neighboring vehicles relay received blocks, then the emergency information reaches the network faster, but the communication channel becomes congested
Solution Approach 1:
The patent changes the parameter of relaying behavior from deterministic (all vehicles relay) to probabilistic (vehicles relay with calculated probability). By adjusting the probability parameter based on device density, the system optimizes the balance between transmission speed and channel load, achieving faster emergency information delivery without excessive congestion.
3Object-generated harmful factors
If density-based probability relaying is implemented, then traffic congestion is reduced, but the complexity of determining relay probability increases
Solution Approach 1:
The patent implements self-service by having each wireless device independently calculate its own relay probability based on locally obtained density information, without requiring complex centralized control or coordination with other devices. This distributed self-service approach reduces overall system complexity while effectively managing traffic congestion through individual probabilistic decisions.
Data Source
AI summary
The present disclosure relates to a congestion control in wireless communications. According to an embodiment of the present disclosure, a method performed by a wireless device in a wireless communication system comprises: obtaining density information of neighboring wireless devices with respect to a reference wireless device; receiving a block from a neighboring wireless device; determining a probability that the wireless device will relay the received block based on the density information; and determining whether to relay the received block based on the probability.