Abstract:
A method for processing, by a gateway, an X2 message in a wireless communication system, the method includes receiving, by the gateway, an X2 setup request message and first target information from a first eNodeB (eNB); transmitting, by the gateway, the received X2 setup request message to a second eNB based on the received first target information; receiving, by the gateway, an X2 setup response message and second target information from the second eNB; and transmitting, by the gateway, the received X2 setup response message to the first eNB based on the received second target information.
Abstract:
A method and apparatus for forwarding data in a wireless communication system is provided. A small cell receives an indication which indicates stopping serving a small cell service from a macro eNodeB (eNB). Upon receiving the indication, the small cell starts to forward data to the macro eNB together with a sequence number (SN) status transfer message. The indication may be received via a form of a message or a form of an information element (IE) in a message.
Abstract:
The present invention relates to a method and apparatus for indicating a cell splitting pattern to a neighboring base station. A base station may perform cell splitting, and transmit, to the neighboring base station, coverage information representing the current shape of the split cells of the base station, determined by the cell splitting. In addition, the base station may further transmit, to the neighboring base station, index information indicating the current cell splitting pattern preconfigured between the base station and the neighboring base station. The neighboring base station may apply a set of mobility robustness optimization (MRO) parameters on the basis of the received coverage information.
Abstract:
A method and apparatus for transmitting split availability of a cell in a wireless communication system is provided. A first eNodeB (eNB) may transmit a split availability of a first cell, managed by the first eNB, to neighbor eNBs. The split availability of the first cell may indicate whether the first cell supports cell split operation or not. Alternatively, the split availability of the first cell may indicate whether the first eNB supports an active antenna system (AAS).
Abstract:
The present invention relates to a method by which a base station transmits a signal for coverage coordination in a wireless communication system and a device for the same. According to one embodiment of the present invention, a coordinating base station receives coverage related information from each of a first base station and a second base station, performs a coverage coordination procedure by using the coverage related information of the first and second base stations and transmits a signal for coverage coordination, which is determined according to the result of performing the coverage coordination procedure, to each of the first and second base stations, wherein the coverage coordination procedure includes determining whether the second base station can supplement the coverage of the first base station when the first base station switches to an idle mode.
Abstract:
A method for processing, by a gateway, an X2 message, and a method for transmitting, by a first eNode B (eNB), an X2 message in a wireless communication system are discussed. The method for processing an X2 message according to one embodiment including receiving, by the gateway, an X2 setup request message and target information from a first eNodeB (eNB); transmitting, by the gateway, the received X2 setup request message to a second eNB based on the received target information; receiving, by the gateway, an X2 setup response message from the second eNB; and transmitting, by the gateway, the received X2 setup response message to the first eNB. The target information is additional information of the X2 setup request message. The first eNB is a home eNB (HeNB).
Abstract:
A method and apparatus of performing a handover procedure in a wireless communication system is provided. The target eNodeB (eNB) receives a specific establishment cause of a user equipment (UE). The specific establishment cause among a plurality of establishment causes comprises emergency, high priority access, mobile terminated access, mobile oriented signaling, mobile oriented data, and delay tolerant access. The target eNB transmits a handover command message to the UE after receiving the specific establishment cause.
Abstract:
A method and apparatus for performing trace recording in a wireless communication system is provided. It is assumed that an evolved NodeB (eNB) is shared by a first operator and a second operator. The UE receives an indication, which allows collecting minimization of drive tests (MDT) logs of a user equipment (UE) of the second operator, from a mobility management entity (MME) of the second operator. Upon collecting the MDT logs, the UE transmits a trace record based on the collected MDT logs to a trace collection entity (TCE) of the first operator.
Abstract:
A method and apparatus for selecting a cell in a wireless communication system is provided. A pico eNodeB (eNB) or a home eNB (HeNB) receives served cell information for a primary cell (PCell) or a secondary cell (SCell) from an interfering neighbor eNB. The served cell information includes information on the number or portion of user equipments (UEs) served by a corresponding cell and information on a resource usage status of the corresponding cell by the UEs. The pico eNB or the HeNB selects a PCell or a SCell based on the received served cell information.
Abstract:
The present invention relates to a method by which a base station transmits a signal for coverage coordination in a wireless communication system and a device for the same. According to one embodiment of the present invention, a coordinating base station receives coverage related information from each of a first base station and a second base station, performs a coverage coordination procedure by using the coverage related information of the first and second base stations and transmits a signal for coverage coordination, which is determined according to the result of performing the coverage coordination procedure, to each of the first and second base stations, wherein the coverage coordination procedure includes determining whether the second base station can supplement the coverage of the first base station when the first base station switches to an idle mode.