User Equipment Proposing Duration for Core Network Time Delay
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Solution Overview
Problem
Current cellular communication networks face inefficiencies in managing user equipment, particularly in reducing message exchanges during NAS procedures, especially for immobile devices like residential gateways and smart meters, which do not require frequent location updates.
Innovation Solution
User equipment proposes a duration for the periodic time delay in attachment and localization area update messages, allowing the core network to adjust based on device mobility and network loading, potentially deactivating the timer for immobile devices, and limiting the list of monitored areas to minimize message exchanges.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the network sets a periodic time delay for all user equipment to update localization areas, then the network can maintain location awareness of all devices, but immobile devices like residential gateways and smart meters generate unnecessary message exchanges consuming network resources
Solution Approach 1:
The patent applies local quality by differentiating the periodic time delay configuration based on device characteristics. The network can assign different T3412 timer values to different user equipment based on their mobility profiles - immobile devices receive a longer period or the timer is deactivated, while mobile devices receive standard periods. This ensures location awareness is maintained for mobile devices without forcing immobile devices to perform unnecessary periodic updates, thereby reducing network resource consumption.
Solution Approach 2:
The patent implements dynamics by making the periodic time delay configurable and adaptable rather than fixed for all devices. The network can dynamically adjust the T3412 timer value based on device type, mobility behavior, and network conditions. This dynamic configuration allows the system to optimize between maintaining accurate location information and reducing unnecessary signaling overhead by adapting the update frequency to each device's actual needs.
2Measurement precision
If user equipment frequently updates localization areas, then the network has accurate location information, but message exchanges increase reducing network efficiency
Solution Approach 1:
The patent applies parameter changes by modifying the periodic time delay parameter (T3412 timer) based on device characteristics and network conditions. Instead of using a fixed update period for all user equipment, the network can adjust this parameter to optimize the balance between location accuracy and network efficiency. For immobile devices, the parameter is set to a very long period or deactivated, while for mobile devices it is set to appropriate intervals to maintain location accuracy without excessive updates.
3Loss of information
If the network monitors all user equipment location changes, then complete location tracking is achieved, but network loading increases especially for immobile devices
Solution Approach 1:
The patent applies local quality by implementing differentiated monitoring strategies for different user equipment. The network can identify immobile devices (such as residential gateways and smart meters) and apply a different monitoring regime to them - either extending the periodic time delay significantly or deactivating the timer. This ensures that location tracking remains complete for mobile devices that require it, while reducing the message volume generated by immobile devices that do not change location.
Data Source
AI summary
A cellular communication network comprises a core network interconnecting a set of cells, an item of equipment in the core network being responsible for managing the mobility of the user equipment between the cells. An item of user equipment transmits (401) to said equipment in the core network an attachment request message for registering itself and also transmitting a message requesting updating of localization areas at the expiry of a period with a duration set by said equipment in the core network in an attachment acceptance message and/or in a message accepting updating of localization areas. The user equipment includes, in each message requesting attachment to the core network and/or in each message requesting updating of localization areas, a proposed duration to be applied to said time delay.