Prioritized EV-DO Paging for Latency-Sensitive Packet Flows
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Solution Overview
Problem
In EV-DO networks, existing systems lack the ability to prioritize packet flow setup based on latency sensitivity, leading to slower setup times for critical flows like VoIP, which can result in poor user experience due to equal priority treatment of all pages regardless of flow type.
Innovation Solution
An access node prioritizes pages by identifying latency-sensitive packet flows and assigning higher priority for their setup over latency-tolerant flows, using queues or ratios to ensure timely establishment of critical connections.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of time
If all pages are transmitted with equal priority in EV-DO networks, then system simplicity is maintained, but setup time for latency-sensitive packet flows increases
Solution Approach 1:
The patent applies local quality by differentiating page transmission priority based on the specific characteristics of each packet flow. Latency-sensitive flows receive high-priority pages while latency-tolerant flows receive normal-priority pages. This is implemented by examining the profile ID associated with each page and assigning appropriate priority levels, thereby optimizing setup time for critical flows without unnecessarily complicating the overall system.
2Productivity
If priority-based page transmission is implemented, then setup time for latency-sensitive flows is reduced, but system complexity increases
Solution Approach 1:
The patent implements parameter changes by modifying the page transmission priority parameter based on the packet flow type. The system changes the priority parameter from a fixed equal-value state to a variable state that depends on the profile ID associated with each page. This allows latency-sensitive flows to be transmitted with higher priority, improving productivity while keeping the complexity manageable through parameter-based differentiation rather than structural overhaul.
3Reliability
If equal priority treatment is used for all pages, then implementation simplicity is maintained, but user experience for critical communications deteriorates
Solution Approach 1:
The patent applies local quality by providing differentiated service quality to different types of communications. Critical communications such as VoIP and push-to-talk receive high-priority page transmission ensuring reliable and timely setup, while non-critical communications receive normal priority. This selective quality enhancement improves overall communication reliability for critical services without requiring complete system redesign.
Data Source
AI summary
Methods and systems are provided for prioritized EV-DO paging based on type of packet flow. In an embodiment, an access node provides service to a plurality of access terminals in a wireless coverage area. The access node receives data addressed to a particular access terminal, where the data is associated with a packet flow such as a VoIP call. The access node determines that the access terminal does not have a traffic channel, and responsively generates a page for transmission to the access terminal, where the page is associated with the packet flow. The access node determines whether the packet flow is latency-sensitive or rather is latency-tolerant. If the packet flow is latency-sensitive, the access node responsively prioritizes the page over one or more pages respectively associated with one or more latency-tolerant packet flows, where the prioritizing is with respect to order of transmission in the wireless coverage area.