MTC-IWF Triggering for Wireless Device Group Management
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Solution Overview
Problem
Current techniques for triggering multiple Machine Type Communication (MTC) devices in wireless communication networks are inefficient and incompatible with emerging broadband wireless access (BWA) networks, leading to network overload and random access issues.
Innovation Solution
The implementation of a system architecture that uses a Services Capability Server (SCS) to send trigger indications to MTC devices via a Machine Type Communication-Interworking Function (MTC-IWF), which broadcasts messages through a Cell Broadcast Center (CBC) to manage group ID values and control communication, reducing network impact and enabling a poll model for data transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If MTC devices randomly access the MTC server without control, then device communication flexibility is improved, but network overload and access efficiency deteriorate
Solution Approach 1:
The system implements periodic polling where the MTC server periodically triggers MTC devices to transmit data at scheduled intervals rather than allowing random access. This periodic action maintains communication flexibility while preventing network overload by controlling the timing and frequency of device transmissions.
Solution Approach 2:
The MTC server acts as an intermediary that mediates between MTC devices and the network infrastructure. It receives trigger indications and selectively activates specific MTC devices for data transmission, thereby controlling network access and preventing random collisions while maintaining device communication flexibility.
2Productivity
If multiple MTC devices are triggered simultaneously for data transmission, then data collection efficiency is improved, but network load and collision probability increase
Solution Approach 1:
The system segments the simultaneous data transmission requests into time-divided slots. The MTC server triggers MTC devices in different time slots rather than simultaneously, maintaining high data collection efficiency while preventing network overload and reducing collision probability through temporal separation.
Solution Approach 2:
The system dynamically adjusts the triggering timing and grouping of MTC devices based on network conditions and data priority. The MTC server can flexibly schedule device activations to optimize data collection efficiency while adapting to prevent network overload, making the system both efficient and resilient.
3Productivity
If a poll model is implemented to control MTC device communication, then network load is reduced, but device autonomy and initiation capability are limited
Solution Approach 1:
MTC devices are configured with self-service capabilities including local data buffering, event detection, and autonomous data preparation. When triggered by the MTC server, devices can immediately transmit prepared data without requiring continuous server polling, thereby reducing network load while preserving device autonomy and initiative.
Solution Approach 2:
MTC devices perform preliminary actions by pre-processing and buffering data locally before being triggered. This allows devices to maintain autonomy in data preparation while the poll model controls actual transmission timing, reducing network load while preserving device capability and readiness.
Data Source
AI summary
Embodiments of the present disclosure describe techniques and configurations for triggering a plurality of wireless devices such as Machine Type Communication (MTC) devices in a wireless communication network. A method may include receiving, by an interworking function (IWF) of a wireless communication network, a trigger from a machine type communication (MTC) server to initiate a communication between the MTC server and a plurality of MTC devices and sending, by the IWF, a triggering indication to the plurality of MTC devices using a radio access network (RAN) over a first reference point to a first module including a cell broadcast center (CBC) or over a second reference point to a second module including a mobility management entity (MME) or a serving general packet radio service (GPRS) support node (SGSN). Other embodiments may be described and/or claimed.