Location-Aware Network Resource Identification in CBRS
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Solution Overview
Problem
In dynamic radio access networks like CBRS, electronic devices face challenges in pre-provisioning mobility policies, leading to inefficient network selection and potential stale information about available channels, which affects communication performance and user experience.
Innovation Solution
An electronic device determines its location and provides this information to a cellular-telephone network, receiving mapping data on available channels, allowing it to scan and connect efficiently within shared or licensed frequency bands, eliminating the need for pre-provisioned mobility policies and reducing the time and power consumption associated with channel scanning.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the electronic device scans the entire spectrum to select a channel in a dynamic network, then the network selection reliability is improved, but the time consumption and power consumption increase
Solution Approach 1:
The system performs preliminary actions by having the spectrum allocation server pre-determine and store mapping information about available channels at different locations. When a device needs to select a network, it queries this pre-computed mapping information based on its location, rather than scanning the entire spectrum. This preliminary preparation significantly reduces the time and power required for network selection while maintaining reliability.
Solution Approach 2:
The patent introduces a spectrum allocation server as an intermediary between electronic devices and the radio access network. This server maintains up-to-date mapping information between device locations and available channels, acting as a mediator that provides accurate network selection information without requiring devices to perform exhaustive spectrum scanning. The intermediary handles the complexity of spectrum management centrally.
2Productivity
If the electronic device stores channel information locally to optimize subsequent network selection, then the network selection speed is improved, but the memory space is consumed and the information may become stale
Solution Approach 1:
Instead of relying on the device to store and manage channel information, the system implements self-service through the spectrum allocation server. The server automatically maintains and updates the mapping information between locations and available channels. Devices simply query the server for current information based on their location, eliminating the need for local storage and ensuring the information is always current without consuming device memory.
Solution Approach 2:
The spectrum allocation server provides a universal service to multiple devices, maintaining a centralized repository of channel availability information for various locations. This multi-functional approach serves many devices simultaneously, allowing each to obtain accurate, location-specific network selection information without any device needing to store comprehensive channel data locally.
3Ease of operation
If the electronic device pre-provisions mobility policy, then the network selection process is simplified, but the information becomes invalid in dynamic networks like CBRS
Solution Approach 1:
The system transitions from static pre-provisioned mobility policies to dynamic, on-demand network selection. Instead of relying on fixed, pre-configured policies that become invalid in dynamic networks, the device determines its current location and queries the spectrum allocation server for real-time channel availability. This dynamic approach ensures information validity while maintaining operational simplicity through automated location-based queries.
Data Source
AI summary
An electronic device that establishes a second connection is described. After determining its location, the electronic device may provide information that specifies the location to a cellular-telephone network using a first connection to the cellular-telephone network. In response, the electronic device may receive mapping information. When the mapping information indicates that there are available channels in associated bands of frequencies at the location, the electronic device may: perform a scan of the available channels in the associated bands of frequencies; and establish the second connection with a radio node based on scan results. Alternatively, when the mapping information indicates that there are no available channels in associated frequency bands at the location, the electronic device may establish a third connection with the radio node in a licensed band of frequencies.