D2D Resource Allocation via Frequency Points
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Solution Overview
Problem
In wireless communication systems supporting device-to-device (D2D) communication, there is a challenge in efficiently allocating resources for transmitting control information and data between transmission and reception UEs, leading to unnecessary battery consumption due to blind decoding of all predetermined resources by the reception UE.
Innovation Solution
A method where the transmission UE receives resource allocation information from the base station and transmits control information and data based on this information, determining the resource regions using a predetermined rule involving multiple frequency resource points, allowing for efficient utilization of resources and reducing unnecessary battery consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the reception UE performs blind decoding on all predetermined resources allocated by the base station, then it can reliably receive control information and data, but unnecessary battery consumption occurs
Solution Approach 1:
The patent introduces a base station as an intermediary that provides resource allocation information to the transmission UE. This intermediary mechanism allows the reception UE to receive guided resource allocation information from the base station, enabling it to determine the actual resource location without performing blind decoding on all predetermined resources, thus reducing battery consumption while maintaining reliable reception
Solution Approach 2:
The base station provides feedback in the form of resource allocation information to the transmission UE. This feedback mechanism enables the transmission UE to transmit control information and data on specifically indicated resources rather than all predetermined resources, allowing the reception UE to efficiently locate and receive the transmitted information without exhaustive blind decoding
2Reliability
If the transmission UE transmits control information and data on all predetermined resources allocated by the base station, then complete information coverage is achieved, but resource utilization efficiency decreases
Solution Approach 1:
The patent extracts only the necessary resource allocation information from the base station's predetermined resource pool and transmits it to the reception UE. Instead of transmitting on all predetermined resources, the system extracts and transmits only on the specific resources indicated by the base station's resource allocation information, improving resource utilization efficiency while maintaining complete information transmission
Solution Approach 2:
The system changes the parameter of resource allocation from a static predetermined resource set to a dynamic resource selection based on base station indications. The transmission UE adjusts its transmission resources according to the resource allocation information received from the base station, enabling efficient resource utilization while ensuring complete information delivery
Data Source
AI summary
The present specification relates to: a method for efficiently indicating, by a base station, a resource region in which control information and data are to be transmitted to a transmission terminal, in a wireless communication system supporting device to device (D2D) communication; and an apparatus therefor. To this end, the transmission terminal receives resource allocation information relating to D2D communication from the base station, and transmits, to the receiving terminal, control information (SA) for D2D communication and data corresponding to the control information on the basis of the resource allocation information received from the base station, wherein the resource allocation information includes information indicating a plurality of frequency resource points, and the transmission terminal defines the SA transmission resource region and the data transmission resource region according to a predetermined rule by using the plurality of frequency resource points.