Directional D2D Power Control for Interference Suppression
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Solution Overview
Problem
In high-density user scenarios, Device to Device (D2D) communication in cellular networks experiences interference with cellular communication due to shared frequency resources, necessitating improved interference inhibition and flexibility in power control.
Innovation Solution
The method involves determining directional transmission capability between communicating parties and implementing a power control strategy for D2D communication links that is not limited by co-frequency cellular user interference conditions, allowing for flexible power management and reduced interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If D2D communication shares frequency resources with cellular users in high-density scenarios, then frequency spectrum efficiency is improved, but interference between D2D and cellular communication increases
Solution Approach 1:
The patent applies parameter changes by dynamically adjusting the transmit power of D2D devices based on interference conditions. The base station determines a power control strategy that modifies the power parameter of D2D transmission to reduce interference to cellular users while maintaining D2D communication quality, thus resolving the contradiction between spectrum efficiency and interference reduction
2Object-affected harmful factors
If directional transmission is used for D2D communication, then interference suppression efficiency is improved, but device complexity increases due to directional transmission capability requirements
Solution Approach 1:
The patent applies local quality by implementing directional transmission only when beneficial for interference suppression. The base station evaluates whether directional transmission should be used based on the communication scenario, and only requires directional capabilities from devices when it provides significant interference reduction benefits, thus balancing interference suppression with device complexity
Data Source
AI summary
A device to device (D2D) communication control method, a D2D communication method, and apparatuses thereof are provided. A method comprises: in response to that at least one party in both parties of communication has a directional transmission capability, determining to establish a D2D communication link using directional transmission; and determining a power control strategy associated with the directional transmission of the D2D communication link. Possible directional D2D transmission can be considered according to directional transmission capability of at least one party in both parties of communication, and a power control strategy specific to the directional D2D transmission can be made, thereby having higher flexibility, and being conducive to suppressing interference more effectively.