Wireless Channel Selection with Pre-Identified Secondary Bands
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Solution Overview
Problem
In wireless communication systems, direct device-to-device communication often experiences connection delays and failures due to differences in frequency characteristics between initial and changed communication channels, leading to poor service quality.
Innovation Solution
A method and apparatus that pre-identify and share information about secondary channels with different frequency bands, allowing for rapid reconnection attempts if the initial channel fails, by including band identification and timeout durations in the channel list, enabling efficient channel switching and reducing connection delays.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If devices switch to a different channel for data exchange, then communication flexibility is improved, but connection reliability deteriorates due to frequency characteristic differences
Solution Approach 1:
The patent applies preliminary action by pre-determining multiple candidate channels (including primary and secondary channels) before actual data exchange begins. When channel switching becomes necessary, devices can immediately transition to a pre-identified secondary channel without undergoing time-consuming channel scanning or negotiation procedures, thus maintaining connection reliability while enabling flexible channel switching.
2Productivity
If devices perform channel changing for direct communication, then resource utilization is improved, but connection delay increases due to channel establishment procedures
Solution Approach 1:
The patent implements preliminary action by establishing a list of candidate channels in advance during the initial connection phase. This pre-prepared channel information allows devices to bypass lengthy channel discovery procedures during subsequent communication sessions, significantly reducing connection establishment time while maintaining efficient resource utilization through direct channel switching.
3Stability of the object's composition
If devices use the same frequency band for initial and changed channels, then frequency consistency is improved, but connection failure risk increases when frequency characteristics differ
Solution Approach 1:
The patent applies parameter changes by allowing the system to dynamically adjust frequency band parameters when selecting channels. Instead of being constrained to the same frequency band, devices can switch to channels in different frequency bands (e.g., from 2.4 GHz to 5 GHz) based on environmental conditions, interference levels, and communication requirements. This flexibility in frequency parameter selection enables the system to avoid congested or interfered channels, thereby improving connection success rates despite differing frequency characteristics.
Data Source
AI summary
The present disclosure relates to a pre-5th-Generation (5G) or 5G communication system to be provided for supporting higher data rates Beyond 4th-Generation (4G) communication system such as Long Term Evolution (LTE). The present disclosure relates to a method and apparatus for selecting a channel in a wireless communication system. A method of operating a terminal in a wireless communication system is provided. The method includes transmitting information regarding a second channel and information regarding a third channel to a peer terminal in a first channel. The method also includes transmitting a first request signal for connection with the peer terminal in the second channel. The method further includes if a response signal for the first request signal is not received in the second channel, transmitting a second request signal for connection with the peer terminal in the third channel. The first channel belongs to a first band, and the second channel belongs to a second band. The present disclosure also includes other exemplary embodiments different from the aforementioned exemplary embodiment.