Network Feedback for M2M Retry Blocking
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Solution Overview
Problem
M2M devices that fail to connect to a network due to network element failures often retry indefinitely, consuming network resources and causing congestion.
Innovation Solution
A network device detects failed network elements and sends a message to block M2M devices from reconnecting for a specified duration, preventing unnecessary connection attempts and conserving network resources.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If M2M devices retry connection indefinitely after failure, then connection success rate may improve, but network resource consumption increases and congestion occurs
Solution Approach 1:
The network device monitors connection status and provides feedback to M2M devices about connection failures. When a M2M device fails to connect, the network device sends a notification message containing a backoff parameter, instructing the device to wait before retrying. This feedback mechanism prevents indefinite retry attempts and reduces network resource consumption while maintaining connection reliability.
Solution Approach 2:
The network device performs preliminary monitoring of connection status and proactively sends notification messages to M2M devices before they can make unnecessary retry attempts. By detecting connection failures in advance and communicating this information to M2M devices, the system prevents wasteful retry behavior and conserves network resources.
2Reliability
If M2M devices continuously attempt network connection, then connection availability is maintained, but network congestion increases
Solution Approach 1:
The system implements a feedback loop where the network device monitors connection status and sends notification messages to M2M devices. When connection failures are detected, the network device provides feedback containing backoff parameters, instructing devices to delay retry attempts. This feedback mechanism maintains connection availability while preventing network congestion caused by continuous retry attempts.
Solution Approach 2:
The system dynamically adjusts the retry behavior of M2M devices based on real-time network conditions. The backoff parameter in the notification message is dynamically determined based on current network status and connection failure patterns. This dynamic adjustment allows the system to maintain connection availability while optimizing network resource efficiency by reducing unnecessary retry attempts during congested periods.
Data Source
AI summary
Wireless devices that are attempting to connect to a packet data network may be blocked from issuing connection requests to the network during periods in which, due to the failure of other network devices, the connections requests will fail. A device may particularly determine when a connection request to access a network, from a machine to machine (M2M) device, will fail or has failed. The device may create, in response to the connection request, a response to the connection request, the response including an indication that the M2M device is to be blocked, by other network devices, from accessing the network. The device may transmit the response to the connection request to the other network devices, the response to the other network devices including one or more parameters that identify a duration for which the M2M device is to be blocked and an identification of the M2M device.