Intra-User QoS Access Channel Probe Scaling
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Solution Overview
Problem
In IP-based wireless access networks, existing AC contention resolution procedures do not distinguish between different types of applications for the same user, resulting in uniform latency for various link flows, which is undesirable, especially during heavy traffic congestion.
Innovation Solution
The introduction of intra-user service classes and access channel probe scaling factors to modify default AC probing parameters, creating intra-user QoS enhanced AC probing parameters that differentiate latency based on the service class of link flows, allowing for prioritization of certain applications over others.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If uniform AC probing parameters are used for all link flows, then system complexity is reduced and ease of operation is improved, but access latency for high-priority applications increases and service differentiation capability deteriorates
Solution Approach 1:
The patent applies local quality by introducing service class-specific AC probing parameters that differentiate treatment for different link flows based on their service class. High-priority link flows receive optimized probing parameters that reduce access latency, while lower-priority flows use default parameters. This allows localized optimization of AC access characteristics for specific service types without requiring complete system redesign.
Solution Approach 2:
The patent implements parameter changes by modifying AC probing parameters (such as probe power, probe interval, persistence probability) based on service class. Different service classes are assigned different parameter sets that optimize their respective performance requirements. This enables dynamic adjustment of AC access behavior to match service priorities while maintaining a manageable parameter structure through predefined parameter sets.
2Loss of time
If service class differentiation is introduced for AC probing, then access latency for high-priority applications is reduced, but device complexity and system configuration complexity increase
Solution Approach 1:
The patent applies segmentation by dividing link flows into distinct service classes (e.g., high-priority, normal-priority, low-priority) with dedicated AC probing parameter sets for each. This segmentation allows the system to manage complexity through structured categorization rather than handling individual link flows independently. The Access Terminal and Access Node maintain tables mapping service classes to parameter sets, enabling differentiated treatment without requiring complex per-flow analysis.
Solution Approach 2:
The patent implements universality by creating a framework where a limited set of predefined parameter sets serves multiple service classes. Rather than creating unique parameters for each individual link flow or application type, the system defines a universal set of parameter configurations that can be assigned to different service classes based on their requirements. This multi-functional approach reduces overall system complexity while maintaining differentiation capability.
3Adaptability or versatility
If intra-user service classes are implemented, then service differentiation capability is improved, but the complexity of AC probe parameter modification increases
Solution Approach 1:
The patent applies preliminary action by pre-defining service class categories and their associated AC probing parameter sets before actual link flow establishment. The system maintains lookup tables that map service class identifiers to optimized parameter configurations. When a link flow is established, the Access Terminal determines the appropriate service class and retrieves the corresponding pre-configured parameters, avoiding complex real-time parameter calculation and simplifying the modification process.
Solution Approach 2:
The patent implements feedback through the QoS parameter exchange mechanism between Access Terminal and Access Node. The Access Node receives QoS parameters from the core network and distributes appropriate AC probing parameters to Access Terminals based on their service class assignments. This feedback loop ensures that parameter modifications are coordinated and consistent with overall network QoS policies, managing complexity through centralized control and validation.
Data Source
AI summary
A method comprising modifying a plurality of access channel (AC) probe parameters using a plurality of intra-user service classes, and accessing an AC using the modified AC probe parameters. The disclosure includes a communications component comprising a processor configured to implement a method comprising recognizing a registration request from an access terminal (AT), wherein the registration request causes a quality of service (QoS) profile comprising an inter-user QoS class for the AT to be requested, retrieving at least one intra-user access service parameter based on the inter-user class, and sending the intra-user access service parameter to the AT. The disclosure also includes a mobile access network comprising an access node (AN) in communication with a plurality of ATs, wherein the AN differentiates service for the ATs based on inter-user service classes and intra-user service class types.