Sidelink Resource Scheduling for LTE and NR V2X
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Solution Overview
Problem
Conventional wireless communication systems are not configured to schedule resources for sidelink communications using both Long Term Evolution (LTE) and New Radio (NR) resources, limiting their capability in vehicle-based communication networks such as V2X networks.
Innovation Solution
A method and system for sidelink resource scheduling that allows user equipment (UE) to request and receive resource scheduling information from a base station for vehicle-based sidelink communications, supporting both LTE and NR resources, enabling efficient allocation of physical resources using Physical Downlink Control Channel (PDCCH) signaling and Downlink Control Indicator (DCI).
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If conventional wireless communication systems are used for sidelink communications, then the system configuration is simple, but the capability to schedule resources using both LTE and NR resources is limited
Solution Approach 1:
The base station is configured to support both LTE and NR resource scheduling for sidelink communications, enabling a single system to perform multiple resource allocation functions. The base station can schedule resources on both LTE uplink carriers and NR uplink carriers, making the system universal across different radio access technologies.
Solution Approach 2:
The system dynamically selects which resource type (LTE or NR) to allocate based on UE requests and network conditions. The base station receives indication information from UEs specifying their preferred resource type and accordingly provides resource scheduling information for either LTE or NR resources, enabling flexible adaptation to different communication needs.
2Adaptability or versatility
If the base station provides detailed resource scheduling information for both LTE and NR resources, then the resource allocation flexibility is improved, but the signaling overhead increases
Solution Approach 1:
The base station pre-configures resource pools for both LTE and NR sidelink resources and stores them in advance. When a UE requests resources, the base station can quickly provide appropriate pre-prepared resource scheduling information without needing to compute or allocate resources in real-time, reducing signaling overhead while maintaining flexibility.
Solution Approach 2:
The system uses indication information from UEs as a template or copy of their resource needs, rather than requiring full detailed specifications. The base station uses this compact indication to retrieve and provide appropriate resource scheduling information from pre-configured pools, reducing the amount of signaling required while maintaining allocation flexibility.
Data Source
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AI summary
Methods, systems, and devices for wireless communications are described. In one example, a method includes receiving broadcast information from a base station that identifies types of resources for vehicle-based sidelink communications that are supported by the base station and transmitting a request to the base station for resource scheduling information to perform a vehicle-based sidelink communication based on the broadcast information. In some cases, the request includes an indication of a type of resources for the vehicle-based sidelink communication supported by the base station and a quality of service (QoS) metric associated with the vehicle-based sidelink communication. In some cases, the method further includes receiving, in response to the request, a response from the base station that comprises the resource scheduling information to perform the vehicle-based sidelink communication.