Subscriber-Aware Paging for Wireless Network Resource Optimization
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Solution Overview
Problem
In wireless communication networks, the existing paging methods are inefficient as they broadcast page messages to multiple base stations, leading to resource wastage and increased power consumption, as they attempt to locate a mobile device by sending messages to all stations within a tracking area, even if the device is not active.
Innovation Solution
The system maintains a list of eNodeBs with which the user equipment (UE) was last actively communicating and uses subscriber-aware paging by sending page requests to a first set of eNodeBs based on recent activity and location information, expanding the scope only if no response is received, thereby reducing unnecessary broadcasts.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If page messages are broadcast to all base stations in a tracking area, then the mobile device can be located with high probability, but network resource usage increases and power consumption rises
Solution Approach 1:
The tracking area is segmented into multiple subsets, with the first subset containing eNodeBs where the UE was last actively communicating and the second subset containing other eNodeBs in the tracking area. This segmentation allows the network to page only relevant subsets rather than broadcasting to all base stations, reducing network resource usage while maintaining paging success probability.
Solution Approach 2:
The system performs preliminary action by maintaining a list of eNodeBs where the UE was last actively communicating before paging is needed. This pre-collected location information enables targeted paging to the first subset of eNodeBs, avoiding unnecessary broadcasts to all base stations in the tracking area.
2Reliability
If page messages are broadcast to all base stations in a tracking area, then the mobile device can be located with high probability, but power consumption increases
Solution Approach 1:
The tracking area is divided into subsets, allowing the UE to wake up and listen for pages only in the first subset (where it was last active) rather than all base stations. This reduces the UE's power consumption while maintaining high paging success probability through targeted paging.
Solution Approach 2:
Instead of paging all base stations in the tracking area, the system performs partial action by paging only the first subset of eNodeBs where the UE was last actively communicating. This partial paging approach reduces power consumption and network resource usage while maintaining adequate paging success probability.
3Reliability
If page requests are sent to multiple eNodeBs, then the mobile device can be reached, but unnecessary transmissions increase
Solution Approach 1:
The eNodeBs in the tracking area are segmented into a first subset (where UE was last active) and a second subset (other eNodeBs). The system sends page requests only to the first subset initially, avoiding unnecessary transmissions to the second subset, while still ensuring device reachability.
Solution Approach 2:
The network performs preliminary action by maintaining location information about where the UE was last actively communicating. This pre-collected information enables the system to target page requests to the correct subset of eNodeBs, eliminating unnecessary transmissions to unrelated base stations.
Data Source
AI summary
This disclosure relates to systems and methods for paging devices in a communication network. A network device providing mobility management through control messaging can be assigned a number of cell sites in multiple tracking areas. The network device such as a mobility management entity (MME) can use a subscriber-aware implementation to provide a hierarchy for contacting a mobile device with a page. The subscriber-aware implementation can be tailored to analyze subscriber activity such as frequency and timing, to page a subset of the total number of cell sites in multiple tracking areas based on the subscriber activity, and to expand the subset after unsuccessful attempts to page the mobile device.