Wireless Channel Set Signaling for Unlicensed Spectrum Access
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Second devices lacking channel access capability cannot determine available channels in unlicensed spectrum, leading to communication failures due to conflicts with other devices.
Innovation Solution
A first device performs channel access on multiple channels to determine a first channel set and sends associated information to a second device, enabling the second device to communicate based on this set, thereby improving channel acquisition probability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a second device performs channel access to determine available channels in unlicensed spectrum, then channel acquisition capability is improved, but device complexity and energy consumption increase
Solution Approach 1:
The first device acts as an intermediary that performs channel access on behalf of the second device. The first device senses multiple channels, determines the first channel set with available channels, and indicates this set to the second device through first information. This eliminates the need for the second device to perform complex channel access procedures itself.
Solution Approach 2:
The first device performs channel access and determines the first channel set in advance before the second device needs to communicate. By conducting channel sensing and evaluation beforehand, the system prepares available channel information proactively, allowing the second device to immediately use the indicated channels without performing its own channel access.
2Reliability
If a second device performs channel access in unlicensed spectrum, then channel availability is improved, but communication failures due to conflicts increase when channel access capability is lacking
Solution Approach 1:
The first device serves as a capable intermediary that performs channel access operations for the second device. Through this intermediary relationship, the second device gains access to reliable channel information without needing to develop or implement channel access capability itself, thereby maintaining communication reliability while simplifying operation.
Solution Approach 2:
Instead of the second device performing channel access and obtaining channel information directly, it receives a copy of the channel access results obtained by the first device. The first information indicating the first channel set is essentially a copied version of the channel availability data, transferred from the first device to the second device.
3Reliability
If a first device performs channel access on multiple channels to determine a first channel set, then channel acquisition probability for the second device is improved, but information transmission overhead increases
Solution Approach 1:
The first device segments the multiple sensed channels into the first channel set containing only available channels. By organizing and filtering channel information into a structured set, the system transmits only relevant and useful information to the second device, reducing overhead while maintaining high channel acquisition probability.
Solution Approach 2:
The first device changes the parameter representation of channel information by determining channel availability status and encoding this state into compact first information. This parameter transformation converts raw channel sensing data into a condensed indication format that conveys essential information with minimal transmission overhead.
Data Source
AI summary
A wireless communication method and a communication device are provided. The method includes: a first device performs channel access on a plurality of channels to determine a first channel set; and the first device sends first information to a second device. The first information is associated with the first channel set. The second device can perform communication on the basis of the first channel set.