Radio Access Network Signaling Traffic Management via Dynamic Transmission Rate
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Solution Overview
Problem
Current wireless communication networks face inefficiencies in managing signaling traffic due to rigid broadcasting schedules of control messages, which do not adapt to varying levels of device ingress and egress in coverage areas, leading to unnecessary resource allocation and potential user experience issues.
Innovation Solution
A method and system where a radio access network determines the level of device ingress and egress in a coverage area and adjusts the transmission rate of control messages such as channel list and neighbor list messages accordingly, optimizing their broadcast frequency based on these dynamics.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If control messages are broadcast at a fixed high transmission rate, then all WCDs receive timely information, but network resources are wasted when few devices are moving or changing channels
Solution Approach 1:
The patent applies dynamics by making the transmission rate of control messages adjustable rather than fixed. The RAN determines device ingress/egress levels and dynamically selects transmission rates from a set of predefined rates, allowing the system to adapt broadcast frequency to actual network conditions and device activity levels.
Solution Approach 2:
The patent changes the parameter of transmission rate based on determined ingress/egress levels. By selecting from multiple predefined transmission rates according to current network conditions, the system optimizes the balance between information delivery reliability and network resource consumption.
2Loss of energy
If control messages are broadcast at a low transmission rate to save resources, then network efficiency improves, but WCDs may miss critical channel or handoff information
Solution Approach 1:
The system dynamically adjusts transmission rates based on real-time determination of device ingress/egress levels. When high activity is detected, higher transmission rates ensure complete information delivery; when activity is low, lower rates conserve resources without compromising essential communication.
Solution Approach 2:
The transmission rate parameter is changed based on network conditions. The RAN selects from predefined rates according to determined ingress/egress levels, ensuring adequate information delivery during high-activity periods while conserving resources during low-activity periods.
3Ease of manufacture
If the RAN uses a rigid fixed-interval broadcasting schedule, then implementation is simple, but it cannot adapt to varying device activity patterns and congestion levels
Solution Approach 1:
The patent transitions from a static fixed-interval schedule to a dynamic adaptive schedule. The RAN determines device ingress/egress levels and adjusts transmission rates accordingly, enabling the system to adapt to varying device activity patterns and congestion levels while maintaining manageable complexity through predefined rate options.
Data Source
AI summary
Disclosed herein are systems and methods for managing signaling traffic in a radio access network (RAN) that provides wireless service to wireless communication devices (WCDs) in a plurality of wireless coverage areas. The RAN may determine a level of ingress of WCDs into a wireless coverage area and/or a level of egress of WCDs out of the wireless coverage area. Further, the RAN may then select a respective transmission rate in the coverage area for one or more control-channel messages based at least in part on a determined ingress level and/or at least in part on a determined egress level. The RAN may then broadcast each control-channel message at that message's respective selected transmission rate.