Technique for Handling Radio Link Failure in a Communication Network
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Abstract
A technique for handling radio link failure in a communication network (10) is provided. A method implementation of this technique comprises the steps of maintaining radio link failure information including the identifier of a user equipment (UE) effected by the radio link failure together with at least one of a time stamp of when the radio link failure was detected and a reference to a cell (C1) which was serving the user equipment (UE) before the radio link failure was detected, receiving reconnection information including an identifier of a reconnected user equipment (UE) effected by a radio link failure after the user equipment (UE) is reconnected to the communication network and correlating the radio link failure information with the reconnection information to obtain a correlation result.
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Citations
37 Claims
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1-18. -18. (canceled)
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19. A method for handling radio link failure in a communication network, comprising:
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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. - View Dependent Claims (26, 27, 28, 29, 30, 31)
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20. A method for handling radio link failure in a communication network, comprising:
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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. - View Dependent Claims (21, 22, 23, 24, 25)
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32. A base station comprising:
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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. - View Dependent Claims (33, 34)
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35. A network component comprising:
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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. - View Dependent Claims (36)
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37. A method in a wireless communication network of correlating radio link failures in with subsequent reconnections, said method comprising:
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detecting occurrences of radio link failures for user equipments operating in one or more cells of the communication network and recording corresponding radio link failure information for each such occurrence, including an identification of the user equipment affected by the radio link failure; and correlating the radio link failure information with reconnection information determined for reconnecting user equipments, and determining from said correlating which cell or cells are frequently used for reconnecting to the communication network, said reconnection information comprising, for a given reconnecting user equipment, an identifier of the reconnecting user equipment.
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Specification