MTC Locally Detached State Indication for Signaling Overhead Reduction
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Solution Overview
Problem
Machine-type communication devices in wireless networks face inefficiencies due to high signaling overhead and network congestion caused by frequent registration and detachment processes, especially when large numbers of devices initiate communication simultaneously, leading to unnecessary load on the network.
Innovation Solution
Implementing a locally detached state indication mechanism that allows MTC UEs to only attempt network attachment and registration when specific conditions are met, such as data transmission or receipt of a trigger, reducing unnecessary signaling and maintaining registration only when necessary.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If MTC UEs perform conventional registration and attachment procedures before data transmission, then reliable communication is established, but signaling overhead and network load increase significantly
Solution Approach 1:
The network pre-configures MTC UEs with locally detached state indications and validity periods before they need to communicate. This preliminary configuration allows devices to autonomously determine when to attach to the network, eliminating the need for repeated registration procedures and reducing signaling overhead while maintaining communication reliability.
Solution Approach 2:
MTC UEs are empowered to autonomously manage their own attachment state based on locally stored indications and validity periods. The devices self-determine whether to attempt network attachment without requiring continuous network coordination, thereby reducing the signaling burden on the network while ensuring reliable communication when needed.
2Productivity
If large numbers of MTC UEs are allowed to transmit simultaneously, then network capacity is utilized, but network overload and congestion occur
Solution Approach 1:
The network implements periodic locally detached state indications with validity periods for MTC UEs. This periodic configuration allows devices to attach to the network in controlled waves rather than simultaneously, spreading out the traffic load over time and preventing network overload while maintaining adequate throughput capacity.
3Speed
If MTC UEs maintain continuous registration with the network, then immediate data transmission is enabled, but signaling burden and network load increase
Solution Approach 1:
The network provides MTC UEs with advance configuration including locally detached state indications and validity periods before data transmission is needed. This preliminary setup allows devices to quickly determine their attachment status and transmit data immediately when conditions are met, achieving fast transmission speeds without requiring continuous registration signaling.
Data Source
AI summary
Systems and apparatus for managing signaling between a network and machine type communication (MTC) devices. An MTC device receives an indication such as a locally detached state indication and, during the validity of the indication, remains locally detached and does not attempt communication with the network except under specified conditions, such as a need by the MTC device to initiate data transfer, or triggering of the MTC device. The MTC device may also receive a local detachment timer and remain attached during the validity of the local detachment timer, with the MTC device becoming locally detached and the indication becoming valid upon expiration of the local detachment timer.