MTC Paging via Cluster Head Dedicated Radio Connections
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Solution Overview
Problem
Machine Type Communications (MTC) devices experience paging delays and resource inefficiencies due to overload in the Radio Access Network (RAN) and Core Network, caused by simultaneous connections and limited resources in the common paging channel, leading to battery drain and spectrum wastage.
Innovation Solution
A method and system that establish dedicated radio connections between cluster heads and base stations, allowing for efficient multicasting of paging information to MTC devices, and dynamic cluster head selection to manage signaling and resource allocation, reducing redundant paging and optimizing channel usage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If MTC servers initiate concurrent data transmission to several MTC devices using common paging channels, then connectivity establishment is enabled, but network overload occurs at backhaul traffic and core network
Solution Approach 1:
The patent segments MTC devices into clusters with designated cluster heads. Each cluster head manages a group of devices and establishes dedicated connections with base stations, dividing the large-scale MTC deployment into smaller manageable units. This segmentation reduces the signaling load on the core network by localizing device management functions at the cluster head level.
Solution Approach 2:
Cluster heads act as intermediary devices between MTC devices and the network infrastructure. They receive paging messages from base stations and forward them to member devices, or collect uplink data from devices and relay to the network. This intermediary role reduces direct signaling between individual devices and the core network, alleviating backhaul traffic overload.
2Adaptability or versatility
If paging messages are transmitted through common channels to all MTC devices, then universal reachability is achieved, but paging delay and paging miss occur due to resource unavailability
Solution Approach 1:
The patent divides the network into multiple clusters, each with its own dedicated resources. Paging messages are transmitted to cluster heads through dedicated connections rather than broadcasting to all devices through common channels. This segmentation enables faster and more reliable paging delivery by avoiding resource contention in common channels.
Solution Approach 2:
Cluster heads pre-establish dedicated connections with base stations before paging is needed. These dedicated resources are reserved and configured in advance, ensuring that when paging messages need to be transmitted, the necessary resources are already available, eliminating delays caused by resource allocation at paging time.
3Adaptability or versatility
If MTC devices receive and process unnecessary paging for other users, then network coverage is maintained, but battery drain increases at the device level
Solution Approach 1:
The patent implements local quality by having cluster heads receive paging messages specifically for their member devices through dedicated connections. Member devices only need to monitor paging from their cluster head, not from all base stations in the network. This localized paging approach maintains network coverage while significantly reducing the energy consumption of individual devices.
Solution Approach 2:
Cluster heads serve as intermediaries that filter and relay only relevant paging information to member devices. Devices do not directly receive or process paging messages from the network; instead, the cluster head receives paging for specific devices and forwards only those messages to the appropriate members, reducing unnecessary processing and battery drain.
4Productivity
If dedicated connections are established between cluster heads and base stations, then signaling efficiency is improved, but device complexity increases for cluster head selection and management
Solution Approach 1:
The patent implements dynamic cluster head selection where devices can elect or switch cluster heads based on current network conditions, signal strength, or load. Cluster heads are not fixed but can change over time, allowing the system to adapt to varying conditions. This dynamic approach maintains signaling efficiency while distributing the management complexity across multiple potential cluster heads rather than requiring complex static configuration.
Data Source
AI summary
A method to transmit paging messages to Machine Type Communication (MTC) devices in wireless communication is provided. The method includes establishing, by a first cluster head, a dedicated radio connection with at least one base station. The method also includes receiving a request from a plurality of MTC devices to transmit a signaling message. The signaling message includes a tracking area update (TAU) and paging information associated with the plurality of MTC devices. The method further includes storing information of the plurality of MTC devices associated with the first cluster head and base station corresponding to each of the MTC devices. The method includes fetching, by a Mobility Management Entity (MME), information of the base station associated with a serving MTC device based on receiving a data request from the at least one MTC device and transmitting the paging information to the base station associated with the serving MTC device.