Terminal Resource Pool Usability for Non-Contiguous D2D
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Solution Overview
Problem
Existing technologies have not established a method for using non-contiguous wideband resources in terminal-to-terminal direct communication, particularly in scenarios where carrier aggregation is employed, leading to inefficient resource allocation.
Innovation Solution
A terminal equipped with a receiving and transmitting unit that operates on non-contiguous frequency resources within a resource pool, along with a control unit to determine the usability of these resources based on its own capabilities, allowing flexible and efficient resource allocation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If carrier aggregation is used to allocate data resources on each carrier, then resource allocation flexibility and efficiency are improved, but the complexity of determining resource pool usability across non-contiguous frequency resources increases
Solution Approach 1:
The resource pool is segmented into multiple component carriers (CCs) that can be independently evaluated for usability. The terminal determines usability on a per-CC basis rather than treating the entire non-contiguous frequency range as a single unit, which simplifies the determination process while maintaining flexibility in resource allocation across carriers.
2Adaptability or versatility
If non-contiguous wideband resources are utilized for terminal-to-terminal direct communication, then resource allocation flexibility is improved, but compatibility with existing terminal capabilities becomes problematic
Solution Approach 1:
The terminal dynamically adapts its resource pool usage based on its own capability indicators. The terminal determines which component carriers are usable for D2D communication by evaluating its own capabilities, and this determination is shared with other terminals through signaling. This dynamic adaptation ensures that each terminal uses only the resource pools it can reliably handle, maintaining compatibility while enabling flexible non-contiguous resource utilization.
Solution Approach 2:
The terminal provides feedback information about its capability to use specific component carriers for D2D communication. This feedback mechanism allows the network and other terminals to understand which non-contiguous frequency resources are usable for each terminal, ensuring reliable communication while maintaining the flexibility to utilize wideband non-contiguous resources when capabilities permit.
Data Source
AI summary
A terminal includes: a receiving unit that receives a signal from another terminal on any subchannel included in a resource pool including non-contiguous frequency resources; a transmitting unit that transmits a signal to another terminal on any subchannel included in the resource pool; and a control unit that determines in which actual component carriers subchannels constituting the resource pool are included, wherein the control unit determines whether or not the resource pool is usable based on the terminal's own capability.