Dynamic UE Usage Type Change in CIoT Networks
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Solution Overview
Problem
Conventional Cellular Internet of Things (CIoT) technologies do not allow User Equipment (UE) to change its usage type after initial registration with the service network, limiting flexibility in core network selection and traffic management.
Innovation Solution
A mobile communication device and Mobility Management Entity (MME) system that enables a UE to request a change in usage type by transmitting a request message and receiving a wait timer value, preventing further requests until the timer expires, allowing for dynamic core network selection even after initial registration.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a UE sends its usage type to the service network only when not registered in the current area, then the network can make initial core network selection based on usage type, but the UE cannot request a change of usage type after registration
Solution Approach 1:
The patent makes the UE usage type dynamic by allowing changes after initial registration. The UE can now modify its usage type through a tracking area update procedure by setting a specific indicator bit and including the requested usage type in the update message, enabling flexible adaptation to changing service requirements without re-registration.
Solution Approach 2:
The patent changes the parameter state by introducing a wait timer value that controls when usage type changes can occur. The network responds with an accepted or rejected status and a wait timer, which the UE must respect before initiating another usage type change request, thus managing the dynamics of parameter changes systematically.
2Adaptability or versatility
If the UE can request usage type change after registration, then flexibility in core network selection is improved, but unnecessary signaling may increase
Solution Approach 1:
The patent implements periodic action through the wait timer mechanism. After the network accepts a usage type change request, it provides a wait timer value that prevents the UE from sending another request until the timer expires. This periodic restriction controls signaling frequency and prevents excessive messages while still allowing necessary changes.
Solution Approach 2:
The network provides feedback to the UE through the tracking area update response, indicating whether the usage type change is accepted or rejected and providing an appropriate wait timer value. This feedback mechanism guides the UE's subsequent actions and prevents unnecessary signaling by informing the UE when to wait before making another request.
Data Source
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AI summary
A mobile communication device configured for CIoT is provided. The mobile communication device includes a wireless transceiver and a controller. The wireless transceiver performs wireless transmission and reception to and from a service network. The controller transmits, via the wireless transceiver, a request message to the service network for changing a UE usage type, receives a response message comprising a wait timer value from the service network via the wireless transceiver, and does not transmit another request message to the service network for changing the UE usage type before the wait timer expires.