Device-to-Device Resource Pool Index Allocation in Wireless Systems
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Solution Overview
Problem
Current wireless communication systems face challenges in efficiently managing resource allocation for device-to-device communication, particularly in allocating sidelink resources effectively across multiple device-to-device pools in evolving wireless communication networks like 5G, which affects data throughput and latency requirements.
Innovation Solution
The method involves configuring communication devices with multiple resource pools by a base station, where devices receive grants indicating resource pools through a resource pool index, allowing them to perform transmissions on device-to-device interfaces, and dynamically select or reselect resources based on priority and availability to optimize sidelink communication.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple resource pools are configured for device-to-device communication, then resource utilization and flexibility are improved, but device complexity and resource management overhead increase
Solution Approach 1:
The resource pool is divided into multiple resource pool groups, each group containing multiple resource pools. This segmentation allows the device to manage resources in organized units rather than as a single large pool, reducing management complexity while maintaining flexibility. The base station configures multiple resource pool groups with different parameters, and the device can select appropriate groups based on communication requirements.
Solution Approach 2:
The resource pool index is dynamically selected based on channel conditions, traffic type, and other parameters. The device can switch between different resource pool groups dynamically, allowing adaptation to changing network conditions while maintaining a structured approach to resource management. This dynamic selection mechanism provides flexibility without requiring the device to manage all resources simultaneously.
2Productivity
If resource pool index is used in grant to indicate resource pool, then resource allocation efficiency is improved, but signal processing complexity increases
Solution Approach 1:
The resource pool index serves as a compact parameter that encodes resource pool identification information. Instead of transmitting full resource pool descriptions or using complex resource indication mechanisms, the system uses a simplified index parameter. This parameter change approach maintains resource allocation efficiency by providing clear, concise resource identification while reducing signal processing complexity through parameter simplification.
3Reliability
If devices dynamically select or reselect sidelink resources based on priority and availability, then communication performance is improved, but processing overhead and latency increase
Solution Approach 1:
The base station pre-configures multiple resource pool groups with different characteristics and parameters before device-to-device communication begins. This preliminary configuration allows devices to have ready-made resource options available, eliminating the need for extensive real-time resource discovery and selection. Devices can quickly select from pre-configured options based on priority and availability, improving response time while maintaining reliable communication performance.
Data Source
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AI summary
A method and apparatus are disclosed from the perspective of a communication device. In one embodiment, the method includes the communication device being configured with a plurality of resource pools by a base station for a cell (1605). The method further includes the communication device receiving a grant from the base station, wherein the grant indicates a resource associated with a resource pool of the plurality of resource pools through a resource pool index in the grant (1610). The method also includes the communication device using the resource to perform a transmission on a device-to-device interface (1615).