Sidelink Resource Allocation for Unicast V2X
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Solution Overview
Problem
Current sidelink resource allocation schemes in device-to-device communication, particularly for unicast transmissions, face challenges in guaranteeing reliable performance and efficiency due to their design for broadcast-type communications, which is insufficient for the stringent requirements of advanced V2X use cases in 5G wireless systems.
Innovation Solution
The proposed solution involves configuring sidelink radio resources based on channel state information (CSI) feedback and adaptive Hybrid Automatic Repeat Request (HARQ) processes, allowing for autonomous and network-scheduled resource allocation to optimize bitrate, quality of service, and communication range, while reducing the computational burden on central scheduling entities.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If centralized resource allocation is used for sidelink communication, then resource management control is improved, but scheduling complexity and computational burden on network nodes increase
Solution Approach 1:
The patent segments resource allocation into two parts: network-configured resource pools define the available resource set, while individual wireless devices autonomously select specific resources from these pools based on their own channel conditions and QoS requirements. This segmentation reduces central scheduling complexity while maintaining reliable resource management through the network-configured pools.
2Device complexity
If autonomous resource allocation is used for sidelink communication, then scheduling complexity on network nodes is reduced, but resource allocation efficiency and QoS guarantee deteriorate
Solution Approach 1:
The network performs preliminary action by configuring resource pools in advance with parameters optimized for different service types and QoS requirements. This preliminary configuration enables devices to autonomously select appropriate resources without real-time network intervention, reducing scheduling complexity while maintaining allocation efficiency through pre-optimized resource characteristics.
3Device complexity
If broadcast-type resource allocation schemes are used, then system simplicity is maintained, but performance reliability for unicast transmissions deteriorates
Solution Approach 1:
The patent applies local quality by configuring different resource pool characteristics tailored to specific unicast communication requirements. Each resource pool can have customized parameters such as time-frequency resource patterns, periodicity, and QoS profiles that are locally optimized for particular service types, thereby improving unicast performance reliability while maintaining the overall simplicity of the pool-based allocation framework.
Data Source
AI summary
A method, system and apparatus are disclosed. A network node configured to communicate with a wireless device is provided. The network node configured to, and/or comprising a radio interface and/or comprising processing circuitry configured to receive a unicast request message from a wireless device where the unicast request message includes information associated with a request for a unicast connection, and determine whether to permit establishment of the requested unicast connection based at least in part on the information in the unicast request message.