Detection and mitigation of signalling anomalies in wireless network
First Claim
1. A method comprising:
- receiving, in connection with a first access node of a radio access network, configuration parameters in connection with a second access node of the radio access network or in connection with a mobility management entity or a gateway of a core network in connection with a plurality of access nodes of the radio access network;
monitoring, in connection with the first access node using the received configuration parameters, traffic in the radio access network;
detecting, in connection with the first access node, in the monitored traffic on the basis of the received configuration parameters, an anomaly causing a control plane signalling load;
exchanging, in connection with the first access node and in connection with a different access node of the radio access network, information regarding capacity and capability of the different access node to take extra control plane signalling;
in response to said detecting and said exchanging, taking, in connection with the first access node, an action to mitigate the anomaly and reporting, in connection with the first access node and in connection with the mobility management entity or the gateway, information on the anomaly;
identifying, in connection with the first access node, a source causing said anomaly on the basis of at least one message of the monitored traffic; and
routing, in connection with the first access node and in connection with the mobility management entity or the gateway, a plurality of messages associated with the identified source.
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Abstract
This document discloses a solution for detecting and mitigating anomalies such as signalling storms in a radio access network of a wireless communication system. According to an aspect, there is disclosed a method including receiving, in a first local traffic analysis module, configuration parameters from a second local traffic analysis module or from a central traffic analysis module connected to a plurality of local traffic analysis modules; monitoring, by a first traffic analysis module by using the received configuration parameters, traffic in a radio access network of a wireless communication system; detecting, in the monitored traffic on the basis of the configuration parameters, an anomaly causing a control plane signalling load; and in response to said detecting, taking an action to mitigate the anomaly and reporting information on the anomaly to the central traffic analysis module.
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Citations
17 Claims
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1. A method comprising:
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receiving, in connection with a first access node of a radio access network, configuration parameters in connection with a second access node of the radio access network or in connection with a mobility management entity or a gateway of a core network in connection with a plurality of access nodes of the radio access network; monitoring, in connection with the first access node using the received configuration parameters, traffic in the radio access network; detecting, in connection with the first access node, in the monitored traffic on the basis of the received configuration parameters, an anomaly causing a control plane signalling load; exchanging, in connection with the first access node and in connection with a different access node of the radio access network, information regarding capacity and capability of the different access node to take extra control plane signalling; in response to said detecting and said exchanging, taking, in connection with the first access node, an action to mitigate the anomaly and reporting, in connection with the first access node and in connection with the mobility management entity or the gateway, information on the anomaly; identifying, in connection with the first access node, a source causing said anomaly on the basis of at least one message of the monitored traffic; and routing, in connection with the first access node and in connection with the mobility management entity or the gateway, a plurality of messages associated with the identified source. - View Dependent Claims (2, 3, 4, 5, 6)
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7. An apparatus comprising:
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at least one processor; and at least one non-transitory memory including computer program code, wherein the at least one non-transitory memory and the computer program code are configured, with the at least one processor, to cause the apparatus at least to; receive configuration parameters in connection with a second access node of a radio access network or in connection with a mobility management entity or a gateway of a core network in connection with a plurality of access nodes of the radio access network; monitor, using the received configuration parameters, traffic in the radio access network; detect, in the monitored traffic on the basis of the received configuration parameters, an anomaly causing a control plane signalling load; exchange, in connection with a different access node of the radio access network, information regarding capacity and capability of the different access node to take extra control plane signalling; in response to said detection and said exchange, take an action to mitigate the anomaly and report, in connection with the mobility management entity or the gateway, information on the anomaly; identify a source causing said anomaly on the basis of at least one message of the monitored traffic; and route, in connection with the mobility management entity or the gateway, a plurality of messages associated with the identified source. - View Dependent Claims (8, 9, 10, 11)
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12. A computer program product embodied on a non-transitory distribution medium readable by a computer and comprising program instructions which, when loaded into an apparatus and executed on at least one processor, cause the apparatus at least to:
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receive configuration parameters in connection with a second access node of a radio access network or in connection with a mobility management entity or a gateway of a core network in connection with a plurality of access nodes of the radio access network; monitor, using the received configuration parameters, traffic in the radio access network; detect, in the monitored traffic on the basis of the received configuration parameters, an anomaly causing a control plane signalling load; exchange, in connection with a different access node of the radio access network, information regarding capacity and capability of the different access node to take extra control plane signalling; in response to said detection and said exchange, take an action to mitigate the anomaly and report, in connection with the mobility management entity or the gateway, information on the anomaly; identify a source causing said anomaly on the basis of at least one message of the monitored traffic; and route, in connection with the mobility management entity or the gateway, a plurality of messages associated with the identified source. - View Dependent Claims (13, 14, 15, 16, 17)
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Specification