Wireless Device Band Reconfiguration for Network-Guided Cell Discovery
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Solution Overview
Problem
Current methods for configuring radio frequency bands in constrained wireless devices, such as those used in IoT scenarios, are limited and do not allow for efficient selection of optimal bands, often leading to devices connecting to suboptimal cells due to fixed rules, resulting in inefficient use of time-frequency resources and energy.
Innovation Solution
A method involving a wireless device and network node that use internet protocols to exchange indications and instructions for reconfiguring radio frequency bands, allowing constrained devices to optimize cell discovery and selection based on network policies, using protocols like LwM2M, YANG, RESTCONF, TR-69, or SNMP.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If fixed rules are used for configuring radio frequency bands in constrained wireless devices, then device complexity is reduced and ease of operation is improved, but communication efficiency deteriorates and energy consumption increases due to suboptimal cell selection
Solution Approach 1:
The network node autonomously determines the optimal second radio frequency band and sends reconfiguration instructions to the wireless device without requiring complex device-side decision-making. The device simply follows the network's guidance, maintaining ease of operation while achieving optimal band selection for communication efficiency.
Solution Approach 2:
The system uses indication messages exchanged between the wireless device and network node to provide feedback about current band configuration and performance. Based on this feedback, the network node adjusts the radio frequency band configuration to optimize communication efficiency while keeping the device operation simple.
2Device complexity
If fixed rules are used for configuring radio frequency bands in constrained wireless devices, then device complexity is reduced, but energy consumption increases due to inefficient use of time-frequency resources
Solution Approach 1:
The network node performs the complex task of determining optimal radio frequency bands and sends reconfiguration instructions to the wireless device. This keeps the device itself simple while ensuring energy-efficient operation through network-optimized band selection that improves time-frequency resource utilization.
3Device complexity
If constrained devices use suboptimal radio frequency bands for cell discovery and selection, then device complexity remains low, but network performance deteriorates due to inefficient use of time-frequency resources
Solution Approach 1:
The system exchanges indication messages between the wireless device and network node to provide feedback on current band configuration and performance metrics. The network node uses this feedback to determine and instruct the optimal second radio frequency band, improving network performance while keeping device complexity low.
Solution Approach 2:
The network node autonomously performs the complex optimization of radio frequency band selection and sends reconfiguration instructions to the wireless device. This maintains simple device architecture while achieving improved network performance through efficient time-frequency resource utilization.
Data Source
AI summary
A method performed by a wireless device (130) for handling radio frequency bands. The wireless device (130) operates in a communications network (10). The wireless device (130) sends (203) an indication to a network node (110) operating in the 5 communications network (10). The indication indicates a first radio frequency band the wireless device (130) is configured with to scan for discovery and selection of a cell operating in the communications network (10). The wireless device (130) then receives (204) another indication from the network node (110). The another indication comprises a first instruction to configure the wireless device (130) to use a second radio frequency 10 band to scan for cell discovery and selection. The sending (203) and the receiving (204) are performed using an internet protocol.