Wireless Scan List Traversal via Attribute Grouping
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Solution Overview
Problem
Wireless communication devices face increased time between visits to scan members on their list, leading to potential missed signals of interest, especially with growing scan lists and interference, making it difficult to efficiently traverse the scan list without impractical or expensive configurations.
Innovation Solution
The method involves sorting scan members by attributes such as mode, bandwidth, system identification, and slot number to group similar members, allowing for synchronized inspections and reduced frequency switching, thereby minimizing scan cycle time by evaluating and dismissing non-priority members without full receive frequency inspections.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the wireless communication device sequentially traverses the scan list to monitor each scan member, then the device can detect signals of interest, but the time between consecutive visits to a particular scan member increases as the scan list grows, leading to missed signals and voice truncation
Solution Approach 1:
The patent performs preliminary actions by sorting scan members into groups based on attributes (analog/digital mode, bandwidth, system ID, slot number) before scanning. This pre-organization allows the device to efficiently determine which groups need full inspection versus which can be dismissed based on quick attribute matching, reducing the time between consecutive visits to scan members while maintaining reliable signal detection.
2Reliability
If the wireless communication device configures a receiver circuit for each frequency to monitor multiple frequencies simultaneously, then the device can detect all signals of interest, but the device complexity and cost increase significantly
Solution Approach 1:
The patent merges the monitoring function for multiple scan members into a single receiver circuit by grouping scan members with identical attributes. Instead of having separate receiver circuits for each frequency, the system combines monitoring tasks for scan members sharing the same mode, bandwidth, system ID, and slot number, allowing one receiver to handle multiple frequencies through attribute-based grouping and selective full inspection.
Solution Approach 2:
The patent makes the single receiver circuit universal by enabling it to perform multiple functions: it can quickly evaluate scan members based on attribute matching and dismiss those with non-matching attributes, while performing full inspections only on groups with matching attributes. This multi-functional approach allows one receiver to effectively monitor multiple frequencies without requiring dedicated hardware for each.
3Speed
If the wireless communication device enhances scanner hardware to quickly switch between receive frequencies, then the scanning speed improves, but interference from non-interest signals still causes delays in detecting signals of interest
Solution Approach 1:
The patent extracts the essential identifying attributes (mode, bandwidth, system ID, slot number) from full signal inspections and uses them for quick preliminary evaluation. By taking out these key attributes and using them for rapid filtering, the system可以避免 performing full receive frequency inspections on scan members with non-matching attributes, thereby reducing the time lost to interference while maintaining the ability to detect signals of interest.
4Measurement precision
If the wireless communication device performs full receive frequency inspections for each scan member, then the device can accurately identify signals of interest, but the scan cycle time increases significantly
Solution Approach 1:
The patent applies partial action by performing full receive frequency inspections only on scan members whose attributes match the evaluated signal, rather than inspecting every scan member in detail. For scan members with non-matching attributes, the system performs only partial evaluation using attribute comparison, which is sufficient to dismiss them without full inspection. This selective approach maintains measurement precision for relevant signals while significantly improving scan cycle throughput.
Data Source
AI summary
A wireless communication device accesses a scan list that includes a plurality of scan members sorted at least by receive frequency and attempts to detect whether a call of interest exists on a receive frequency by performing a group scan for a group of scan members that are marked scan undone and that have the same corresponding receive frequency, wherein the group includes a first scan member and at least one other scan member. The group scan includes inspecting the receive frequency to obtain inspection results; using the inspection results to determine that there is no signal on the receive frequency having signal attributes that match a set of attributes for the first scan member; and using the inspection results to evaluate at least one of the other scan members in the group to determine whether there is a corresponding signal of interest on the receive frequency.