User Equipment Priority Signaling for D2D Resource Scheduling
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Solution Overview
Problem
There is no mechanism in user terminals to preferentially transmit device-to-device (D2D) data over other data, leading to inefficient resource allocation in D2D communication systems.
Innovation Solution
A communication control method and apparatus that allow user equipment to transmit priority information to a base station, enabling the base station to schedule transmission resources for D2D communication, ensuring that D2D data with higher priority is transmitted efficiently by allocating appropriate radio resources.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If D2D communication is implemented without priority-based transmission mechanism, then device-to-device communication can be established, but efficient transmission of high-priority D2D data cannot be achieved
Solution Approach 1:
The patent introduces priority parameters to characterize D2D data packets, allowing the base station to differentiate and schedule transmissions based on priority levels. This parameter-based approach enables efficient high-priority data transmission while maintaining a relatively simple overall system architecture.
2Productivity
If base station schedules all D2D transmission resources, then resource allocation can be optimized, but signaling overhead between user equipment and base station increases
Solution Approach 1:
The user equipment performs preliminary actions by measuring reference signals from the target device and calculating channel quality indicators before requesting transmission resources. This pre-computation reduces the information that needs to be exchanged with the base station during resource allocation, thereby reducing signaling overhead while maintaining efficient resource allocation.
3Loss of energy
If D2D communication bypasses the base station for data transmission, then network traffic load is reduced, but transmission resource coordination becomes more difficult
Solution Approach 1:
The base station acts as an intermediary that coordinates transmission resources for D2D communications. Although data packets are transmitted directly between user equipment without passing through the base station, the base station maintains control over resource allocation by receiving priority information and channel quality indicators, then granting appropriate transmission resources. This mediator approach reduces network traffic load while maintaining centralized resource coordination.
Data Source
AI summary
A communication control method, user equipment and apparatus thereof include transmitting, to a base station by a user equipment, first information on a priority of a data pack to be transmitted from the user equipment via direct communication in which the data packet is transmitted to another user equipment without passing through the base station. The first information assists the base station in scheduling transmission resources for the direct communication. The method, user equipment and apparatus also include transmitting a request for requesting transmission resources for the direct communication to the base station by the user equipment, and receiving by the user equipment from the base station second information indicating transmission resources for the direct communication scheduled by the base station.