Radio Access Network Resource Allocation for Call Drop Recovery
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Solution Overview
Problem
Radio access networks (RANs) face resource depletion due to the allocation of multiple resources to mobile stations that have recently experienced call drops, increasing the likelihood of subsequent call failures and depleting available air-interface resources.
Innovation Solution
A method where the RAN determines if a mobile station has recently experienced a call drop and allocates a reduced extent of resources instead of the standard resources, conserving radio resources and reallocating them to other mobile stations seeking communication.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If standard resources are allocated to mobile stations that recently experienced call drops, then resource allocation is simplified and consistent, but radio resources are depleted and subsequent call failures increase
Solution Approach 1:
The patent applies dynamics by making resource allocation adaptive rather than static. The RAN dynamically adjusts the extent of resources allocated based on the mobile station's recent call history. Specifically, the system determines whether a mobile station experienced a call drop within a recent time period and allocates a reduced extent of resources accordingly, allowing the resource allocation strategy to change based on real-time conditions rather than applying a fixed allocation rule to all mobile stations
Solution Approach 2:
The patent changes the parameter of resource allocation extent based on the mobile station's call history. Instead of allocating a fixed standard extent of resources to all mobile stations, the system modifies this parameter by allocating a reduced extent of resources to mobile stations that recently experienced call drops. This parameter change directly addresses the contradiction by tailoring resource allocation to specific conditions, improving call success rates for vulnerable mobile stations while preserving radio resources
2Quantity of substance
If reduced resources are allocated to mobile stations with recent call drops, then radio resources are conserved for other mobile stations, but resource allocation complexity increases
Solution Approach 1:
The patent applies preliminary action by having the RAN proactively identify mobile stations that recently experienced call drops before allocating resources for new call attempts. The system maintains knowledge of recent call drop events and uses this information in advance to determine the appropriate extent of resources to allocate. This preliminary identification and classification simplifies the overall allocation process by pre-categorizing mobile stations into different resource allocation groups based on their call history
Solution Approach 2:
The patent modifies the resource allocation parameter (extent of resources) based on a determined condition (recent call drop). This conditional parameter change creates a clear decision rule: if a mobile station experienced a call drop within the recent time period, allocate reduced resources; otherwise, allocate standard resources. This approach manages complexity by establishing a straightforward conditional logic rather than requiring complex real-time analysis during resource allocation
Data Source
AI summary
A method, system, and apparatus for assigning resources to a wireless communication device that experienced a call drop. A RAN may receive an origination request from a mobile station and make a first determination that within a predetermined amount of time prior to receiving the origination request the mobile station experienced a call drop. Responsive to making the first determination, the RAN may make a second determination that the RAN should allocate a first extent of resources to the mobile station rather than allocating a second extent of resources to the mobile station. The first extent of resources may be less than the second extent of resources. Responsive to making the second determination, the RAN may allocate the first extent of resources to the mobile station in response to the origination request rather than allocating the second extent of resources to the mobile station in response to the origination request.