D2D Radio Resource Allocation with Time-Bounded Validity
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Solution Overview
Problem
Current mobile communication systems face challenges in efficiently managing Device-to-Device (D2D) communication resources, particularly in ensuring network control and preventing resource abuse, as existing methods lack effective mechanisms for temporal resource allocation and monitoring in D2D communication scenarios.
Innovation Solution
The proposed solution involves configuring temporary and quasi-stationary sets of radio resources for D2D communication, with a base station transceiver providing limited-time resource allocations to mobile transceivers, allowing for network control and monitoring, even during idle modes or radio link failures, and enabling requests for resource extensions based on communication session durations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If D2D communication resources are allocated without time limitations, then communication flexibility and device autonomy are improved, but network control capability deteriorates and resource abuse risk increases
Solution Approach 1:
The patent implements dynamic resource allocation where the base station configures temporary resource sets with specific validity time intervals for D2D communication. This dynamic approach allows resources to be automatically reclaimed after expiration, maintaining network control while enabling flexible D2D communication within controlled time boundaries. The resource configuration includes start time and duration parameters that enable time-based resource management.
2Reliability
If the base station monitors D2D communication continuously, then network control and security are improved, but system complexity and signaling overhead increase
Solution Approach 1:
The patent applies preliminary action by having the base station pre-configure temporary resource sets with validity time intervals before D2D communication occurs. The base station provides resource configuration information including time interval parameters in advance, enabling devices to autonomously manage resources within the predefined time window without continuous monitoring. This reduces signaling overhead while maintaining network control through time-bounded resource allocation.
3Duration of action of moving object
If D2D resources are allocated for extended periods, then communication session continuity is improved, but resource allocation flexibility and network responsiveness deteriorate
Solution Approach 1:
The patent segments D2D resource allocation into multiple temporary resource sets, each with a defined validity time interval. Instead of allocating one long-duration resource block, the system divides resources into smaller time-bounded segments. This segmentation enables the network to reallocate resources more frequently and efficiently while still supporting extended communication sessions through sequential resource configurations, thereby improving both session continuity and resource allocation flexibility.
Data Source
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AI summary
3GPP LTE device-to-device, D2D, communication establishment coordinated by the network, for User Equipments, UEs, in idle or in connected mode. Upon request by a UE of D2D resources, the base station transceiver, eNB, provides configuration information relating to a temporary set of radio resources , the temporary set of radio resources being valid during a limited time interval. The configuration is performed by means of Radio Resource Control, RRC messages. For UEs in idle mode the eNB may provide a transmission resource pool in a System Information Block, SIB. Both the UE and the eNB start a validity timer related to the D2D communication. The UE may request during the assigned D2D transmission, an extension of the assigned time or resource pool. Also, when the validity timer expires, the eNB considers that D2D operation is completed and terminated.