RAN Channel Assignment Message Transmission via Coverage Area Quality
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Solution Overview
Problem
Transmitting multiple channel assignment messages across multiple wireless coverage areas can cause paging messages to be lost or delayed due to higher priority being given to channel assignment messages over paging messages, leading to congestion and reduced successful reception by wireless communication devices (WCDs).
Innovation Solution
A radio access network (RAN) limits the number of channel assignment messages transmitted by assessing the quality of wireless coverage areas, such as through paging channel utilization and signal strength measurements, to determine the optimal areas for message transmission, thereby avoiding congested areas and ensuring successful message delivery.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple channel assignment messages are transmitted via different wireless coverage areas, then the probability of successful reception by WCD is increased, but paging messages may be lost or delayed due to channel congestion
Solution Approach 1:
The system dynamically changes the transmission parameters by selecting which wireless coverage areas to use based on current paging channel utilization levels. When utilization exceeds a threshold, the system modifies its behavior to transmit through fewer coverage areas, thereby adjusting the parameter of message transmission distribution to prevent congestion while maintaining reliability
Solution Approach 2:
The system implements dynamic adaptation by continuously monitoring paging channel utilization and adjusting the number and selection of wireless coverage areas used for channel assignment message transmission in real-time, transforming a static transmission approach into a dynamic one that responds to changing network conditions
2Reliability
If channel assignment messages are transmitted with higher priority than paging messages, then channel assignment reliability is improved, but paging channel utilization increases causing congestion
Solution Approach 1:
Instead of transmitting channel assignment messages through all available wireless coverage areas (excessive action), the system transmits through only the necessary number of coverage areas based on current paging channel utilization conditions (partial action), thereby achieving sufficient reliability without excessive channel usage
Solution Approach 2:
The system changes the parameter of transmission extent by adjusting how many wireless coverage areas are used for channel assignment message transmission based on real-time monitoring of paging channel utilization, dynamically scaling the transmission effort to match network capacity
Data Source
AI summary
A radio access network (RAN) may limit the number of channel assignment messages that it transmits to a wireless communication device (WCD) when the quality of one or more wireless coverage areas available to the WCD is impaired. For example, if the paging channel utilization of a given wireless coverage area is high, or if the WCD receives a signal strength from the given wireless coverage area that is low, the RAN may refrain from transmitting a channel assignment message via the given wireless coverage area. Similarly, if the aggregate paging channel utilization of a plurality of such wireless coverage areas is high, or if the WCD receives an aggregate signal strength from the one or more wireless coverage areas that is high, the RAN may transmit channel assignment messages via a limited number of wireless coverage areas.