Method and apparatus for logging information
AssigneeSamsung Electronics Co., Ltd.
InventorsSang Bum Kim, Soeng Hun Kim, Kyeong In Jeong
Life of this patent
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Abstract
The present invention relates to a method and an apparatus for logging a radio resource control (RRC) failure of user equipment (UE) and receiving the log. According to one embodiment of the present invention, a method for logging an RRC failure of UE may comprise the steps of: attempting random access; if the failure of random access is sensed, logging information on the failure; and if the success of random access is sensed, transmitting information on the failure logged before the success to a connected base station. According to one embodiment of the present invention, an apparatus and a method which effectively log a channel state or a connection failure can be provided.
Claims6
A method performed by a user equipment (UE) in a communication system, the method comprising:
- transmitting at least one preamble for a random access;
- receiving a random access response as a response to the at least one preamble for the random access;
- transmitting a first radio resource control (RRC) connection request message;
- starting a timer associated with an RRC connection setup;
- in case that the RRC connection setup is not completed before the timer expires, logging connection establishment failure information, wherein the connection establishment failure information includes first information indicating a number of preambles that were transmitted and second information indicating whether or not a maximum power level was used for a last transmitted preamble among the preambles;
- transmitting a second RRC connection request message;
- receiving an RRC connection setup message as a response to the second RRC connection request message;
- transmitting an RRC connection complete message including a first indicator, wherein the first indicator informs that the UE has the connection establishment failure information and a second indicator informs that the UE has radio link failure information;
- receiving a UE information request message including information for requesting the connection establishment failure information;
- and
- transmitting a UE information response message as a response to the UE information request message, wherein the UE information response message includes the connection establishment failure information.
A user equipment (UE) in a communication system, the UE comprising:
- a transceiver;
- and
- a controller coupled with the transceiver and configured to:
- transmit at least one preamble for a random access,
- receive a random access response as a response to the at least one preamble for the random access,
- transmit, via the transceiver to a base station, a first radio resource control (RRC) connection request message,
- start a timer associated with an RRC connection setup,
- in case that the RRC connection setup is not completed before the timer expires, log connection establishment failure information, wherein the connection establishment failure information includes first information indicating a number of preambles that were transmitted and second information indicating whether or not a maximum power level was used for a last transmitted preamble among the preambles,
- transmit a second RRC connection request message,
- receive an RRC connection setup message as a response to the second RRC connection request message,
- transmit an RRC connection complete message including a first indicator, wherein the first indicator informs that the UE has the connection establishment failure information and a second indicator informs that the UE has radio link failure information,
- receive a UE information request message including information for requesting the connection establishment failure information, and
- transmit a UE information response message as a response to the UE information request message, wherein the UE information response message includes the connection establishment failure information.
Dependencies are inferred from the claim text.