Electronics and Telecommunications Research Institute

Samsung Electronics Co., Ltd.

Industry-academic Cooperation Foundation, Chosun University

Chul Sik Yoon

Sung Cheol Chang

Hyun Jun Lee

Kwang Jae Lim

Eunkyung Kim

Sung Kyung Kim

Won-Ik Kim

Jae Sun Cha

Soojung Jung

Seokki Kim

Juhee Kim

Mi Young Yun

Sung-Geun Jin

Jee Hwan Ahn

Hyun-jae Kim

Hyun Jae Lee

Young-Ho Jung

Chul Min Park

Mi-Young Yun

Seokjoo Shin

Namgi Kim

Hyun Kyu Chung

Hyun Sup Lee

Yu Ro Lee

Hyun-Jae Kim

Jung-Im Kim

Soo Young Kim

Seok Ki Kim

Kwang-Jae Lim

Taegyun Noh

Kwang Soon Kim

Jihoon Choi

Soo Jung Jung

Young Jin Sang

Sung Chool Chang

Kwang Jao Lim

Seok Heon Cho

Ho-Shin Cho

Jing Li

A method and an apparatus for transmitting the physical uplink control channel including an uplink control channel expressed by product of a uplink control information and a sequence and demodulation reference signal expressed by a sequence having different cyclic shift values through a short resource block are provided.

Method and apparatus for transmitting physical uplink control channel

A method in which a terminal that supports a multi-carrier manages a primary carrier, including: receiving a primary carrier change command from a base station; and changing the primary carrier from a serving primary carrier to a target primary carrier.

Device, method for managing carrier of base station, terminal and method for managing carrier thereof

A method for managing a terminal operated in an idle state is provided. The method includes entering a femto cell, determining whether a femto base station managing the femto cell has the same paging group as a macro base station managing a macro cell overlapping the femto cell, transmitting a first ranging code triggering a paging enable state to the femto base station if it is determined that the paging group is the same as the determination result, and receiving a paging message from the femto base station.

Terminal, method for managing thereof, base station and method for managing thereof

A method for communication of a base station includes: receiving first data from a first terminal; transmitting the first data to a second terminal by local forwarding without passing through an access service network (ASN); receiving second data from the second terminal; and transmitting the second data to the first terminal without passing through the ASN.

Method for communication of base station, terminal and relay station

When zone allocation information of sub-bands is changed, a terminal receives a new MBS configuration message after a lifetime of an MBS configuration message at a time when the changed zone allocation information is received is expired. The terminal applies the changed zone allocation information at the beginning of the first MSI of the new MBS configuration message.

Method and apparatus for managing multicast and broadcast service resource

A signaling method for a terminal that performs direct communication between terminals terminal is disclosed. A transmitting terminal transmits a link establishment request message for establishing a link to a receiving terminal, and the receiving terminal transmits a link establishment response message responding to this message to the transmitting terminal. The link establishment request message includes a field indicating a flow to use if the receiving terminal acquires a token.

Signalling method for direct communication between terminals

Provided are a method for transmitting uplink data by a terminal in a mobile communication system, the method comprising: when data to be transmitted to uplink is generated in an idle mode, transmitting a ranging request message including at least one of a group identifier allocated to each terminal group to which the terminal belongs, an offline transmission indicator indicating transmission of uplink data in a state in which the terminal is not connected to a network, and uplink data, to a base station; and receiving a ranging response message confirming that the uplink data has been successfully transmitted, from the base station.

Method for transmitting uplink data, and base station and terminal supporting the same in mobile communication system

For managing MBS configuration information, a terminal decodes an MBS configuration message including configuration information for an MBS operation and a lifetime, and then decodes an MBS configuration message that is transmitted at a time that the lifetime indicates.

Method and apparatus for managing configuration information of multicast and broadcast service

In a direct communication between terminals, a terminal transmits a synchronization channel preamble part after transmitting a synchronization channel message part including synchronization information. The terminal receives a dedicated channel including a direct communication packet after transmitting the synchronization channel preamble part. A transition time gap for switching from transmission to reception may be inserted to an end of the synchronization channel preamble part.

Method and apparatus for transmitting synchronization channel, and method and apparatus for receiving synchronization channel

A communication method of a terminal that can operate in a relay mode or a base station mode is provided. When the terminal, having received a service from a first base station, detects that a service connection to the first base station is unavailable, the terminal searches for a second base station, which is an available neighboring base station. The terminal transmits a ranging request message including a base station identifier of the first base station to the second base station.

Terminal and communication method thereof

Referring to FIG., if the direct communication terminal, among the direct communication terminalsandreceiving a downlink multicast service from the base stationthrough the forwarding terminal, wants to be a talker, the direct communication terminalperforms a unicast connection establishment procedure with the forwarding terminal, in order to transmit an uplink unicast packet.

Method of direct communication between terminals respectively connected and unconnected to base station

A group communication method of a terminal is provided. The terminal establishes a group call connection with a first base station belonging to a group call zone, and receives group call data from the first base station. When moving to the coverage area of a second base station belonging to the group call zone, the terminal receives group call data from the second base station.

Group communication method and apparatus

A method of managing a resource is provided by a base station. The base station allocates a resource to a terminal, and generates a downlink control channel including information of the allocated resource and a transmission time of a next downlink control channel. Further, the base station transmits the downlink control channel to the terminal.

Method and apparatus for managing resource

A method of setting a cycle of a low-duty mode in a femto base station is provided. The cycle of the low-duty mode has a pattern in which an available interval and an unavailable interval repeatedly appear, and the available interval is set to include a paging listening interval of a paging cycle. A method of setting a cycle of a low-duty mode in a femto base station having a service area overlapping with that of a macrocell is provided. An unavailable interval is set by taking the overlapping degree of the service area of the femto base station with the macrocell into consideration. A method of setting a cycle of a low-duty mode in a plurality of femto base stations operated in the low-duty mode is provided. The same cycle can be set for a plurality of base stations.

Method of low-duty mode operation of femtocell base station

A method and apparatus for transmitting a synchronization signal in a talk-around direct communication network is provided. The method includes: determining one of a plurality of second windows included in a first window as a synchronization reception window; selecting one of a plurality of synchronization slots included in the second windows as a first synchronization slot; transmitting a first synchronization signal through the first synchronization slot included in the second windows, excluding the synchronization reception window; detecting a second synchronization signal transmitted from other terminals using the first synchronization slot included in the synchronization reception window; and determining that a collision from amongst the synchronization signals has occurred based on the detection result.

Growing community of inventors

Seoul, South Korea

Chul Sik Yoon