M2M Wireless Device Network Access Control via Broadcast Messaging
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Solution Overview
Problem
Current wireless communication methods with machine-to-machine (M2M) devices are inefficient due to excessive network resource usage, high signaling overhead, and challenges in reaching devices not continuously registered on the network, particularly when managing large numbers of devices that operate intermittently and send small amounts of data.
Innovation Solution
A method and system that manage access to wireless networks by defining network access rules and service classes for M2M devices, using broadcast messages for configuration and control, allowing efficient communication through Cell Broadcast channels, and optimizing network resource usage by varying quality of service and security levels based on network conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If M2M devices wake up and register periodically to check for messages, then devices can be reached by the network, but battery power is wasted and network traffic increases
Solution Approach 1:
The network performs preliminary actions by buffering incoming messages for M2M devices and proactively pushing them when devices wake up, eliminating the need for devices to repeatedly check for messages and reducing both energy consumption and network traffic
Solution Approach 2:
M2M devices autonomously determine when to wake up and register based on their own data generation patterns and message reception needs, rather than following rigid network-scheduled polling cycles, optimizing their energy usage while maintaining reachability
2Reliability
If M2M devices wake up and register periodically, then messages can be delivered to devices, but network traffic increases due to registration overhead
Solution Approach 1:
The patent combines message delivery with device wake-up events, so that devices only communicate with the network when they actually need to send or receive data, merging multiple functions into a single efficient operation and reducing overall network traffic
Solution Approach 2:
The patent extracts the periodic registration requirement from the message delivery process, allowing devices to remain unregistered during idle periods and only establish network connections when message transmission is actually needed, eliminating unnecessary registration traffic
3Ease of operation
If individual communication with each M2M device is used, then specific devices can be addressed, but network capacity consumption increases and signaling overhead is high
Solution Approach 1:
The patent implements a universal addressing mechanism where a single broadcast message can address multiple M2M devices simultaneously using group identifiers, allowing the system to efficiently address devices in bulk while maintaining the ability to target specific devices when needed
Solution Approach 2:
The patent introduces a message buffering intermediary layer that decouples individual device addressing from network transmission, allowing single broadcast messages to serve multiple devices and reducing the total number of individual signaling operations required
4Use of energy by moving object
If M2M devices operate intermittently to save power, then battery life is extended, but network reachability becomes problematic
Solution Approach 1:
The patent implements feedback mechanisms where M2M devices notify the network of their wake-up times and message reception status, allowing the network to adapt its message delivery strategy to device power cycles and maintain reliable communication without requiring continuous device operation
Solution Approach 2:
The network performs preliminary message buffering and prepares messages for delivery before devices wake up, ensuring that devices can operate intermittently while maintaining reliable message delivery, as all communication needs are pre-prepared and pushed in single operations
Data Source
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AI summary
Approaches for managing machine-to-machine (M2M) wireless devices are disclosed. M2M devices may be managed using broadcast messages wirelessly transmitted from a server. M2M wireless devices may be configured to utilize service classes in order to implement network access policy control. Features include per-message or per-group security; randomized delays for acknowledgements and/or network access, optionally per group or network access rule; sequence numbers and/or retransmissions for QoS; pre- defined pathname shortcuts; network access rules based on time, congestion and network events; estimates of congestion at various nodes; spreading and/or maximum wait times; default or universal service classes; application data streams mapped to service classes; and offline triggering.