NR Sidelink Subchannel Indication Across Multiple Resource Pools
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Solution Overview
Problem
Existing communication technologies face challenges in implementing flexible resource scheduling for sidelink communication, particularly in new radio (NR) systems, where bandwidth parts (BWPs) are introduced, leading to inefficiencies in resource utilization and transmission performance.
Innovation Solution
A method and apparatus that utilize subchannel indications based on a reference resource pool to unify understanding between network devices and terminal devices, allowing flexible scheduling of subchannels within multiple resource pools, and adjust bit lengths to ensure compatibility and reduce complexity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If subchannel indication is designed for multiple resource pools in NR system, then flexible resource scheduling is achieved, but understanding consistency between network device and terminal device becomes difficult
Solution Approach 1:
The patent applies universality by designing a unified subchannel indication mechanism that works across multiple resource pools. The indication uses a common bit width determined by a reference resource pool, allowing the same signaling structure to indicate subchannels in any of the M resource pools, thus achieving both flexibility and consistency.
Solution Approach 2:
The patent changes the parameter of bit width dynamically based on the reference resource pool configuration. By determining the subchannel indication bit width according to the reference resource pool's subchannel count, the system adapts the signaling parameters to accommodate different resource pool sizes while maintaining a unified indication approach.
2Adaptability or versatility
If subchannel indication bit width is increased to cover multiple resource pools, then more subchannels can be indicated, but signaling overhead increases
Solution Approach 1:
The patent applies dynamics by making the subchannel indication bit width adaptive rather than fixed. The bit width is determined dynamically based on the reference resource pool configuration, allowing the system to use only the necessary number of bits for indicating subchannels in the current resource pool context, thus reducing unnecessary signaling overhead.
Solution Approach 2:
The patent uses partial action by allocating subchannel indication bits only as needed based on the reference resource pool. Instead of providing maximum bits for all possible resource pools simultaneously, the system provides exactly the bits needed for the current reference resource pool configuration, avoiding excessive signaling.
3Ease of manufacture
If different bit widths are used for different resource pools, then each pool is optimized, but determination complexity increases
Solution Approach 1:
The patent applies universality by using a single determination rule for subchannel indication bit width that works for all resource pools. The bit width is always determined by the reference resource pool configuration, providing a universal method that simplifies the determination process while still optimizing for the specific reference pool being used.
Data Source
AI summary
This application discloses a communication method and apparatus. The method includes receiving by a terminal device a subchannel indication from a network device, and performing sidelink communication on K subchannels based on the subchannel indication. The subchannel indication is used to indicate the K subchannels used for sidelink communication, the K subchannels belong to M resource pools in N resource pools, and the N resource pools are resource pools corresponding to a BWP used for sidelink communication. A quantity of bits of the subchannel indication is determined based on a quantity of subchannels included in a reference resource pool, and the reference resource pool is a resource pool in the N resource pools.