Carrier Selection Based on Packet Flow Type
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Solution Overview
Problem
In wireless communication networks, particularly in EV-DO systems, there is a challenge in efficiently managing carrier frequencies for packet flows with varying quality of service (QoS) requirements, leading to potential bottlenecks and poor user experience due to uneven distribution of high-priority packet flows across carriers.
Innovation Solution
The access node determines the type of packet flow requested by an access terminal and instructs it to conduct the packet flow on the carrier with the fewest ongoing packet flows of the same type, ensuring that latency-sensitive flows like VoIP are spread across multiple carriers, while allowing latency-tolerant flows to be assigned to any carrier.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If high-priority packet flows are assigned to a single carrier, then the assignment process is simple, but capacity bottlenecks and service quality degradation occur
Solution Approach 1:
The patent segments high-priority packet flows across multiple carriers based on flow type classification. Instead of concentrating all high-priority traffic on one carrier, the system divides and distributes these flows to different carriers, preventing capacity bottlenecks while maintaining manageable assignment complexity through automated classification rules.
Solution Approach 2:
The patent changes the parameter of carrier selection by introducing flow-type-based distribution logic. The access node modifies its carrier assignment behavior by considering packet flow characteristics and distributing flows to different carriers according to predefined patterns, thereby optimizing capacity utilization without significantly increasing complexity.
2Reliability
If packet flows are distributed across multiple carriers, then service quality and capacity utilization improve, but the carrier selection process becomes more complex
Solution Approach 1:
The patent applies preliminary action by pre-classifying packet flows into different types before carrier assignment. The access node categorizes incoming packet flows based on their characteristics and requirements, then assigns them to appropriate carriers according to predetermined rules. This preliminary classification simplifies the overall decision-making process while achieving reliable service quality distribution.
Solution Approach 2:
The patent changes the selection parameters by introducing flow-type classification as a key criterion for carrier assignment. Instead of using complex real-time optimization algorithms, the system changes the approach to use flow characteristics and predefined distribution patterns, thereby improving service quality while keeping the selection process manageable.
3Ease of operation
If latency-sensitive flows are concentrated on one carrier, then assignment is straightforward, but voice quality and service reliability deteriorate
Solution Approach 1:
The patent segments latency-sensitive packet flows across multiple carriers based on their flow type. By identifying and separating these flows into different carrier groups, the system maintains straightforward assignment procedures while preventing voice quality degradation that would result from concentrating all latency-sensitive traffic on a single carrier.
4Ease of operation
If all packet flows are assigned to available carriers without differentiation, then the system is simple to operate, but capacity efficiency and service quality suffer
Solution Approach 1:
The patent changes the operational parameters by introducing flow-type-based carrier selection criteria. The access node modifies its assignment behavior to consider packet flow characteristics and distribute flows to different carriers according to predefined patterns. This parameter change improves capacity efficiency while maintaining relatively simple system operation through automated classification and assignment rules.
Data Source
AI summary
Methods and systems are provided for carrier selection based on type of packet flow. Service is provided to access terminals on a plurality of carriers in a wireless coverage area. A request is received from a first access terminal. The request indicates that the first access terminal is requesting a packet flow, and the request comprises a packet-flow-type indication. It is determined whether the packet-flow-type indication is associated with an expedited-forwarding quality of service (QoS). If the packet-flow-type indication is associated with an expedited-forwarding QoS, it is further determined that, among the plurality of carriers, a first carrier has the fewest ongoing packet flows having the packet-flow-type indication; responsively, the first access terminal is instructed to conduct the requested packet flow on the first carrier.