COT Sharing Indication for D2D Channel Utilization
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Solution Overview
Problem
Conventional Channel Occupy Time (COT) sharing schemes are inefficient in Device to Device (D2D) communication, particularly when using unauthorized frequency bands, as they do not effectively utilize channels and complicate the communication process.
Innovation Solution
User equipment and network side equipment generate and transmit Channel Occupy Time sharing indication information, including time-frequency resources, to enable COT sharing between user equipment, allowing autonomous resource selection and simplified channel usage in D2D communication.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If conventional COT sharing scheme is used in D2D communication, then channel access is simplified, but channel utilization efficiency deteriorates
Solution Approach 1:
The patent segments the COT sharing process into distinct phases: first UE transmits control information indicating its COT usage, then second UE transmits control information indicating its COT usage. This segmentation allows each UE to independently manage its time-frequency resources while maintaining coordination, thereby improving channel utilization efficiency without complicating the overall access process.
Solution Approach 2:
The first UE performs preliminary action by transmitting control information before actually using the channel for data transmission. This preliminary indication allows the second UE to prepare for its turn and avoid channel collisions, simplifying the coordination process while improving efficiency through proactive resource allocation.
2Productivity
If network side equipment performs resource scheduling for COT sharing, then channel usage is optimized, but system complexity increases
Solution Approach 1:
The patent implements self-service by allowing UEs to autonomously manage COT sharing without requiring network side scheduling. Each UE transmits control information indicating its intended COT usage, and the other UE independently determines whether to share the channel. This eliminates network involvement while maintaining optimized channel usage through peer-to-peer coordination.
Solution Approach 2:
The control information transmitted by each UE acts as an intermediary mechanism that carries scheduling decisions directly between UEs. This intermediary approach replaces the need for network side scheduling equipment, reducing system complexity while preserving channel usage optimization through distributed decision-making.
3Productivity
If COT sharing indication information is transmitted between UEs, then resource coordination is improved, but signaling overhead increases
Solution Approach 1:
The patent applies partial action by transmitting only the necessary control information required for COT sharing coordination, rather than all possible channel parameters. The control information includes essential details about time-frequency resources and usage intentions, providing sufficient coordination data while minimizing signaling overhead.
Solution Approach 2:
The patent extracts only the critical coordination information from the full channel parameter set and transmits only this extracted control information between UEs. By taking out only the essential elements (COT duration, time-frequency resources, usage indication), the system achieves effective resource coordination with minimal signaling overhead.
Data Source
AI summary
The present disclosure relates to a user equipment, a network side device, a wireless communication method and a storage medium. The user equipment of the present disclosure comprises a processing circuit, the processing circuit being configured to: generate channel occupancy time (COT) sharing indication information, wherein the COT sharing indication information comprises time frequency resources used by other user equipments when the user equipment shares a COT with the other user equipments; and send the COT sharing indication information to the other user equipments. By using the user equipment, the network side device, the wireless communication method and the storage medium of the present disclosure, COT sharing can be supported in a D2D communication mode, thereby enabling a channel to be utilized more reasonably, and simplifying a usage process of an unauthorized frequency band in D2D communication.