Wireless Handover Protocol Inversion for Channel Reliability
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
There is a risk that the channel indication in a handover request message may indicate problematic channels, such as unsupported, unavailable, or interfered channels, which can make it difficult to set up a new wireless connection reliably using an out-of-band communication protocol.
Innovation Solution
A system and method that allow devices to swap roles if the initial channel indication is not viable, sending a second handover request message with alternative protocol and channel indications, enabling the selection of suitable channels and protocols for establishing a new connection, ensuring reliable handover via an out-of-band communication protocol.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a handover request message includes a channel indication specifying channels for the new connection, then the handover process can be automated and streamlined, but the channels indicated may be problematic (unsupported, unavailable, or interfered), reducing connection reliability
Solution Approach 1:
The receiving device provides feedback by sending a handover select message that indicates whether the indicated channels are acceptable or if alternative channels should be used. This feedback loop allows the requesting device to adjust its channel selection based on actual channel conditions, maintaining automation while improving reliability
Solution Approach 2:
Instead of the requesting device unilaterally deciding which channels to use, the receiving device (which has better knowledge of actual channel conditions) effectively makes the decision by indicating acceptable channels or alternatives in the handover select message. This reverses the traditional request-response dynamic to improve reliability
2Device complexity
If the handover protocol specifies a single channel indication in the request message, then the message structure remains simple, but it cannot accommodate situations where the indicated channels are problematic
Solution Approach 1:
The handover protocol becomes dynamic by allowing the receiving device to modify the channel indication in its response. The system adapts to different channel conditions by enabling alternative channel specifications, making the protocol flexible without requiring complex initial message structures
Solution Approach 2:
The requesting device performs preliminary channel selection and indicates preferred channels in the handover request. This preliminary action is then refined by the receiving device based on actual conditions, allowing the system to start with a simple structure and evolve as needed
Data Source
AI summary
A device (110) arranged for wireless communication (130) has a processor (112) to execute a handover sequence to establish a new connection with a further device (120). A handover request message has a protocol indication indicating one or more alternative communication protocols that are supported by the requester and a channel indication indicating at least one channel to be used for a new connection. Upon receiving a first handover request message including an initial protocol indication and an initial channel indication, it is determined whether the new connection is to be established based on the initial protocol indication and via a selected channel based on the initial channel indication. If not so, the processor determines a second protocol indication and a second channel indication indicating at least one further channel to be used for the new connection and sends a second handover request message. Effectively the role of handover requester and handover selector are switched.