Apparatus and method for detecting cause of radio link failure or handover failure in mobile communication system
AssigneeSamsung Electronics Co., Ltd.
InventorsLixiang Xu, Gert-Jan Van Lieshout, Himke Van Der Velde
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Abstract
A terminal, a Base Station (BS) and a method for detecting a cause of a Radio Link Failure (RLF) or handover failure are provided. The method includes determining whether an RLF or a handover failure occurs, performing a process of a connection re-establishment or connection establishment to enter a connection mode after encountering the RLF or the handover failure, and transmitting an RLF information report to a BS after entering the connection mode.
Claims40
A method for operating a terminal in a mobile communication system, the method comprising:
- determining whether a Radio Link Failure (RLF) or a handover failure occurs;
- performing a process of a connection re-establishment or connection establishment in response to the determining;
- and
- transmitting, from the terminal, an RLF information report to a first Base Station (BS) after performing of the process,
- wherein the RLF information report comprises information regarding time elapsed since a reception, by the terminal, of a last command for a handover until the RLF or the handover failure, and
- wherein the time is used to determine whether there is a recent handover of the terminal or not.
A method for operating a first Base Station (BS) in a mobile communication system, the method comprising:
- performing a process of a connection re-establishment or connection establishment for a terminal in response to a Radio Link Failure (RLF) or a handover failure in a cell of a second BS;
- receiving an RLF information report from the terminal;
- and
- transmitting the RLF information report to the second BS,
- wherein the RLF information report comprises information regarding time elapsed since a reception, by the terminal, of a last command for a handover until the RLF or the handover failure occurs, and
- wherein the time is used, by the second BS, to determine whether there is a recent handover of the terminal or not.
A method for operating a first Base Station (BS) in a mobile communication system, the method comprising:
- receiving an RLF information report from a terminal after a Radio Link Failure (RLF) or a handover failure from a second BS;
- and
- determining a cause of the RLF or the handover failure using the RLF information report, wherein the RLF information report comprises information regarding time elapsed since a reception, by the terminal, of a last command for a handover until the RLF or the handover failure occurs, and
- wherein the time is used to determine whether there is a recent handover of the terminal or not.
A terminal for use in a mobile communication system, the terminal comprising:
- a controller for determining whether a Radio Link Failure (RLF) or a handover failure occurs, and for performing a process of a connection re-establishment or connection establishment in response to the determining;
- and
- a modem for transmitting an RLF information report from the terminal to a first Base Station (BS) after the performing of the process,
- wherein the RLF information report comprises information regarding time elapsed since a reception, by the terminal, of a last command for a handover and until RLF or the handover failure occurs, and
- wherein the time is used to determine whether there is a recent handover of the terminal or not.
A first Base Station (BS) for use in a mobile communication system, the BS comprising:
- a controller for performing a process of a connection re-establishment or connection establishment for a terminal in response to a Radio Link Failure (RLF) or a handover failure in a cell of a second BS;
- a modem for receiving an RLF information report from the terminal;
- and
- a backhaul communication unit for transmitting the RLF information report to the second BS, wherein the RLF information report comprises information regarding time elapsed since a reception, by the terminal, of a last command for a handover until the RLF or the handover failure occurs, and
- wherein the time is used, by the second BS, to determine whether there is a recent handover of the terminal or not.
A first Base Station (BS) for use in a mobile communication system, the BS comprising:
- a backhaul communication unit for receiving an RLF information report from a terminal after a Radio Link Failure (RLF) or a handover failure from a second BS;
- and
- a controller for determining a cause of the RLF or the handover failure using the RLF information report, wherein the RLF information report comprises information regarding time elapsed since a reception, by the terminal, of a last command for a handover until the RLF or the handover failure occurs, and
- wherein the time is used to determine whether there is a recent handover of the terminal or not.
Dependencies are inferred from the claim text.