Method and apparatus for handling radio link failure in mobile communication system
AssigneeElectronics and Telecommunications Research Institute
InventorsKyung Yeol SOHN, Jisoo PARK, Hoon LEE
Life of this patent
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Abstract
A base station (BS) of a mobile communication system receives a candidate list including a candidate remote radio head (RRH) adjacent to the UE, excluding at least one serving RRH connected to the UE, among a plurality of RRHs, from the UE, allocates a random access code index to at least one candidate RRH included in the candidate list, and subsequently transmits the random access code index allocated to the at least one candidate RRH to the UE.
Claims20
A method for handling a radio link failure in a base station (BS) of a mobile communication system, the method comprising:
- receiving, from a user equipment (UE), a candidate list including a candidate remote radio head (RRH) adjacent to the UE, excluding at least one serving RRH connected to the UE, among a plurality of RRHs;
- allocating a random access code index to at least one candidate RRH included in the candidate list;
- and
- transmitting, to the UE, the random access code index allocated to the at least one candidate RRH.
A method for handling a radio link failure in a user equipment (UE) of a mobile communication system, the method comprising:
- configuring a candidate list including at least one candidate remote radio head (RRH) adjacent to the UE, excluding at least one serving RRH to which the UE is connected, among a plurality of RRHs;
- receiving a random access code index of the at least one candidate RRH allocated by a base station (BS), through the serving RRH;
- and
- adding the random access code index of the at least one candidate RRH to the candidate list.
An apparatus for handling a radio link failure in a user equipment (UE) of a mobile communication system, the apparatus comprising:
- a candidate list configuring unit selecting a candidate remote radio head (RRH) adjacent to the UE, excluding a serving RRH to which the UE is connected, among a plurality of RRHs connected to a single baseband unit (BBU) pool, configuring a candidate list including the candidate RRH, adding a random access code index allocated to the candidate RRH to the candidate list, and managing the candidate list;
- a random access processing unit performing random access with a target adjacent RRH using a random access code index allocated to the target adjacent RRH with strongest signal strength received from the UE, on the candidate list, when a failure occurs in a radio link established between the serving RRH and the UE;
- a radio link connection unit connecting the target candidate RRH and a radio link, when the random access is completed.
Dependencies are inferred from the claim text.