Technique for Handling Radio Link Failure in a Communication Network

A method for handling radio link failure in a communication network, comprising:

• maintaining radio link failure information including an identifier of a user equipment affected by the radio link failure together with at least one of the data items of a time stamp of when the radio link failure was detected and a reference to a cell which was serving the user equipment before the radio link failure was detected;
• receiving reconnection information including an identifier of a reconnected user equipment affected by a radio link failure, after the user equipment is reconnected to the communication network;
• and
• correlating the radio link failure information with the reconnection information to obtain a correlation result.

A method for handling radio link failure in a communication network, comprising:

• detecting a radio link failure with respect to a user equipment;
• logging an identifier of the user equipment affected by the radio link failure together with at least one of the data items of a time stamp of when the radio link failure was detected and a reference to a cell which was serving the user equipment before the radio link failure was detected;
• and
• performing at least one of the following steps:
• sending user equipment context information to a base station which is serving a cell to which user equipments are frequently reconnecting after radio link failures have occurred;
• adjusting handover parameters between cells having a high amount of radio link failures and cells to which user equipments are frequently reconnecting after radio link failures have occurred;
• defining an X2 interface between base stations serving cells having a high amount of radio link failures and cells to which user equipments are frequently reconnecting after radio link failures have occurred;
• adjusting the deployment of a base station so that a cell having a high amount of radio link failures and a cell to which user equipments are frequently reconnecting after radio link failures have occurred, are served by the same base station.

A base station comprising:

• a detecting unit for detecting a radio link failure with respect to a user equipment;
• and
• a logging unit for logging an identifier of the user equipment affected by the radio link failure together with at least one of the data items of a time stamp of when the radio link failure was detected and a reference to a cell which was serving the user equipment before the radio link failure was detected;
• and
• a sending unit for sending user equipment context information to a base station which is serving a cell to which user equipments are frequently reconnecting after radio link failures have occurred.

A network component comprising:

• a maintaining unit for maintaining radio link failure information including the identifier of a user equipment affected by the radio link failure together with at least one of the data items of a time stamp of when the radio link failure was detected and a reference to a cell which was serving the user equipment before the radio link failure was detected;
• a receiving unit for receiving reconnection information including an identifier of a reconnected user equipment affected by a radio link failure after the user equipment is reconnected to the communication network;
• and
• a correlating unit for correlating the radio link failure information with the reconnection information to obtain a correlation result.