DSRC-LTE V2V Coexistence Channel Priority Management
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
In wireless communication systems, device-to-device (D2D) communication and short-range communication, such as DSRC, often share channels, leading to collisions when used for vehicle-to-vehicle (V2V) communication, necessitating a method to reduce channel collisions by determining channel availability and priority levels for efficient coexistence.
Innovation Solution
A user equipment (UE) determines the priority level of each channel and checks if the highest priority channel is occupied by short-range communication; if so, it identifies available channels for cellular D2D communication, shifting to a channel with a higher priority level not occupied by short-range communication to minimize collisions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If cellular D2D communication and short range communication share the same channels for V2V communication, then channel utilization is improved, but channel collisions increase
Solution Approach 1:
The patent segments the shared channel space by introducing priority levels that divide channels into different usage categories. Cellular D2D communication is assigned to higher priority channels while short range communication uses lower priority channels, effectively segmenting the channel resource space to reduce collisions while maintaining overall channel utilization
Solution Approach 2:
The patent changes the parameter of channel priority assignment dynamically. By adjusting which channels are assigned to which communication type based on current usage patterns and collision detection, the system optimizes the balance between channel utilization and collision reduction through parameter modification
2Productivity
If cellular D2D communication prioritizes highest priority channels, then communication efficiency is improved, but interference from short range communication increases
Solution Approach 1:
The patent applies preliminary action by having cellular D2D communication preemptively occupy the highest priority channels before short range communication can cause interference. The system reserves these channels for cellular D2D use, ensuring efficient communication while preventing interference through advance channel assignment
Solution Approach 2:
The patent introduces a priority level intermediary that mediates between cellular D2D communication and short range communication. This intermediary layer assigns different priority levels to different channel types, allowing cellular D2D to access high-priority channels while short range communication is directed to lower priority channels, thus reducing interference
Data Source
AI summary
An effective way for the cellular device-to-device communication and the short range communication to share a set of channels for communication is desired. The apparatus may be a user equipment (UE). The apparatus determines a priority level of each channel of a plurality of channels. The apparatus determines whether a first channel of the plurality of channels, the first channel having a highest priority level, is occupied by short range wireless communication. If the first channel is occupied by the short range wireless communication, the apparatus determines availability of one or more remaining channels of the plurality of channels for a cellular device-to-device (D2D) communication, where the one or more remaining channels are different from the first channel.