Unlicensed Spectrum Access via Proxy Channel Scheduling
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Solution Overview
Problem
Zero power devices lack channel access capability, making it challenging for them to communicate on unlicensed spectrum while minimizing conflict and interference with other devices.
Innovation Solution
A wireless communication method that enables zero power devices to access multiple channels to obtain time domain resources, allowing them to communicate on unlicensed spectrum and reduce interference by using a first device to perform channel access on their behalf.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If zero power devices are deployed on unlicensed spectrum, then communication capability is improved, but channel access capability is insufficient leading to conflict and interference
Solution Approach 1:
The patent introduces a first device (network device or terminal device with channel access capability) as an intermediary to perform channel access on behalf of the zero power second device. The first device transmits a first signal containing first information that indicates the target time domain resource for the second device, enabling the zero power device to communicate without needing its own channel access capability.
2Device complexity
If zero power devices lack channel access capability, then device complexity is reduced, but ability to access unlicensed spectrum is compromised
Solution Approach 1:
The first device performs channel access and resource allocation selflessly for the second device, obtaining time domain resources through its own channel access capability and then indicating these resources to the zero power second device via the first signal, enabling the second device to benefit without contributing channel access functionality.
3Productivity
If multiple devices share unlicensed spectrum, then spectrum utilization is improved, but conflict and interference between devices increases
Solution Approach 1:
The first device performs preliminary channel access and obtains time domain resources before the second device transmits. By pre-obtaining and pre-indicating the target time domain resource through the first signal, the system avoids conflicts that would arise from simultaneous channel access attempts by multiple devices.
Data Source
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AI summary
Embodiments of the present application provide a wireless communication mothod and a device. The method is applicable to a first device and comprises: by means of channel access of a plurality of channels, acquiring at least one time domain resource on at least one of the plurality of channels, wherein the at least one time domain resource comprises a target time domain resource corresponding to a second device. In the present application, by means of channel access of the plurality of channels, the first device acquires at least one time domain resource on at least one of the plurality of channels, wherein the at least one time domain resource comprises the target time domain resource corresponding to the second device. Therefore, the second device may implement wireless communication on a license-free spectrum, and conflicts and interference generated between the second device and other devices may be reduced.