Sidelink Resource Allocation via Common Reference in NR
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Solution Overview
Problem
In the context of New Radio (NR) access technology, there is a lack of clear resource allocation mechanisms for sidelink communication, sidelink discovery, and other sidelink operations, which can lead to incorrect resource interpretation and performance issues.
Innovation Solution
The proposed solution involves a transmitting apparatus that allocates resources for Physical Sidelink Shared Channel (PSSCH) based on a common resource allocation reference and indicates this allocation via Physical Sidelink Control Channel (PSCCH), allowing a receiving apparatus to obtain the allocated resources accurately.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a common resource allocation reference is used for sidelink communication, then resource allocation accuracy and system performance are improved, but device complexity increases due to the need for coordinated reference management between transmitting and receiving apparatuses
Solution Approach 1:
The network configures the common resource allocation reference (common resource pool) in advance for both transmitting and receiving apparatuses before sidelink communication begins. This preliminary configuration ensures both parties use the same reference for resource allocation interpretation, eliminating ambiguity without requiring complex real-time coordination mechanisms during actual communication.
2Use of energy by moving object
If BWP switching is implemented for power saving, then energy consumption is reduced, but resource allocation complexity increases for sidelink operations where BWP may not be defined
Solution Approach 1:
The common resource pool configuration serves multiple functions: it acts as the resource allocation reference for sidelink communication, provides a fallback mechanism when BWP is not defined or used, and ensures consistent interpretation between transmitting and receiving apparatuses. This universal reference structure simplifies resource allocation across different operational scenarios including BWP switching, non-BWP modes, and various sidelink operations without adding complexity.
Data Source
AI summary
Provided are a transmitting apparatus, receiving apparatus and wireless communication methods related to resource configuration for sidelink communication, sidelink discovery or any other sidelink operation in NR. A transmitting apparatus, comprising: circuitry, operative to allocate resources for Physical Sidelink Shared Channel (PSSCH) based on a common resource allocation reference and indicate the resource allocation via Physical Sidelink Control Channel (PSCCH) which is used by a receiving apparatus to obtain the allocated resources; and a transmitter, operative to transmit PSCCH and associated PSSCH on the allocated resources to the receiving apparatus.