Sidelink Bandwidth Allocation for Mixed-Capability Terminals
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Solution Overview
Problem
There is a lack of clarity on how terminal devices with different capabilities communicate with each other over a sidelink in communication systems.
Innovation Solution
A communication method and apparatus that utilize frequency domain bandwidths and resource pools for sidelink communication, allowing terminal devices with varying configurations to communicate effectively by using a first frequency domain bandwidth or resource pool that is less than or equal to a third frequency domain bandwidth, and enabling transmission and reception of system messages using a part of a second frequency domain bandwidth.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If terminal devices with different capabilities use different frequency domain bandwidths for sidelink communication, then communication compatibility between devices is improved, but resource allocation complexity increases
Solution Approach 1:
The patent segments the frequency domain bandwidth into multiple resource pools with different bandwidth sizes. Each terminal device can be assigned to appropriate resource pools based on its capabilities, allowing devices with different bandwidth requirements to coexist without interfering with each other's communication
Solution Approach 2:
The patent creates a universal resource allocation mechanism where resource pools can serve multiple functions - they can be used by different terminal devices with varying capabilities, and the same resource pool structure can accommodate both narrowband and wideband devices through proper configuration
2Loss of energy
If a first terminal device uses a smaller frequency domain bandwidth for sidelink communication, then spectral efficiency is improved, but communication rate decreases
Solution Approach 1:
The patent applies local quality by allowing different terminal devices to use different bandwidth sizes appropriate to their specific capabilities and requirements. A first terminal device can use a smaller bandwidth optimized for its spectral efficiency, while a second terminal device can simultaneously use a larger bandwidth for higher data rates, with each device operating in its optimal local condition
Data Source
AI summary
Provided are a communication method and a communication apparatus. The method comprises: a first terminal device performing sidelink communication with a second terminal device by means of a first frequency domain bandwidth or a first resource pool, wherein the first terminal device is configured with the first frequency domain bandwidth and/or a second frequency domain bandwidth for a sidelink, or the first resource pool and/or the second frequency domain bandwidth for the sidelink, the second terminal device is configured with a third frequency domain bandwidth for the sidelink, and the first frequency domain bandwidth or the bandwidth of the first resource pool is less than or equal to the third frequency domain bandwidth.