Access Network Priority Mapping for Wireless Call Admission
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Solution Overview
Problem
Conventional wireless communication systems face challenges in managing call requests due to insufficient capacity, leading to denied calls and inefficient resource allocation, particularly in supporting priority services and emergency calls.
Innovation Solution
The method involves mapping priority levels to access classes within the access network, allowing access terminals to receive parameters for establishing communication links, which enables more effective resource allocation and priority handling during overload conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the access network denies call requests due to insufficient capacity, then the system avoids overload and maintains stability, but the service quality and successful call establishment rate deteriorate
Solution Approach 1:
The patent applies local quality by differentiating access parameters based on access class. Instead of uniform denial or acceptance of all call requests, the system assigns different apersistence values, maximum retry counts, and other access parameters to different access classes. This allows high-priority calls to have more favorable access conditions while low-priority calls face stricter limitations, thereby maintaining system stability while improving overall call establishment success rate through differentiated treatment.
2Productivity
If the access network accepts all call requests, then the service quality and user satisfaction improve, but the system becomes overloaded and loses stability
Solution Approach 1:
The patent implements parameter changes by dynamically adjusting access parameters such as apersistence values, maximum retry counts, and other control parameters based on system conditions and access class. When system load is high, the network can modify these parameters to restrict access for lower priority classes while maintaining access for higher priority classes. This allows the system to adaptively control call admission to maintain stability while maximizing service quality within capacity constraints.
3Ease of operation
If uniform access parameters are applied to all access terminals, then the system complexity is reduced and ease of operation improves, but the ability to support priority services and differentiated quality of service deteriorates
Solution Approach 1:
The patent applies segmentation by dividing access terminals into different access classes based on priority levels and service requirements. Each access class is assigned specific access parameters such as apersistence values and maximum retry counts. This segmentation enables the system to support differentiated quality of service and priority services while maintaining manageable complexity through standardized parameter sets for each class, rather than requiring individualized configuration for every terminal.
4Adaptability or versatility
If differentiated access parameters are assigned to different access classes, then the priority service support and quality of service improve, but the device complexity and configuration complexity increase
Solution Approach 1:
The patent implements universality by creating standardized access class definitions that can be applied across multiple access terminals and networks. Each access class represents a universal template with predefined parameters that can be assigned to any terminal requiring that service level. This multi-functionality allows the same access class configuration to serve multiple purposes and multiple terminals, reducing overall configuration complexity while maintaining the ability to support differentiated priority services across the entire network.
Data Source
AI summary
The present invention provides a method of determining characteristics of access classes in a wireless communication system. In one embodiment, a method is provided for implementation in an access network of a wireless communication system. The method includes mapping, at the access network, a plurality of priority levels to a plurality of access classes. Each access class is associated with at least one parameter used by access terminals to establish a wireless communication link with the access network. The method also includes transmitting, from the access network to a first access terminal, information indicating the mapping of the plurality of priority levels to the plurality of access classes in response to receiving a request to establish a communication session between the first access terminal and the access network.