Samsung Electronics Co., Ltd.

Sungkyunkwan University

Kyungkyu Kim

Seunghoon Park

Chiwoo Lim

Youngbin Chang

Daegyun Kim

Hyunseok Ryu

Sangkyu Baek

Sangwook Kwon

Youngjoong Mok

Hyun Jeong Kang

Anil Agiwal

June Hwang

SungJin Lee

Jonghyung Kwun

Hyunjeong Kang

Jae-Seung Son

Sang-Hyo Kim

Kyunghoon Lee

Min Young Chung

Kyuho Han

Hyungjin Choi

Sueng Jae Bae

Jin Whan Kang

Bum-Gon Choi

Kyunghoon Won

Chung-ki Cho

A fifth generation (5G) or a pre-5G communication system provided to support a higher data transmission rate than a system after a fourth generation (4G) communication system, such as long-term evolution (LTE) is provided. An apparatus of a user equipment (UE) using device-to-device (D2D) communication is provided. The apparatus includes at least one processor, and at least one transceiver configured to be operatively coupled to the at least one processor, wherein the at least one processor is configured to receive a response message from each of a plurality of UEs in response to a request message transmitted from the UE, identify at least one UE for a dynamic group from among the plurality of UEs based on the response message, generate an identifier (ID) for the dynamic group based on an ID of the UE, and transmit, to the at least one UE, a group create message including the ID for the dynamic group.

Apparatus and method for generating dynamic group

A 5generation (5G) or pre-5G communication system for supporting a higher data transfer rate than a 4generation (4G) communication system such as long term evolution (LTE) is provided. An electronic device may include a processor and a communication interface operatively coupled to the processor for transmitting and receiving a message. The processor can transmit a first message to a first electronic device using a proximity communication for communication with a second electronic device, and the first message can include information enabling the first electronic device to communicate with the second electronic device on behalf of the electronic device.

Apparatus and method for controlling transmission and reception in a wireless communication system

The present disclosure relates to a 5G or pre-5G communication system for supporting a higher data transmission rate than a 4G communication system such as LTE. A security problem in which information of a monitoring device is provided to another PLMN exists in the procedure for connecting ProSe Functions of two PLMNs and transmitting and receiving information therebetween, and thus, configuration of a D2D discovery service between different providers (inter PLMN) is difficult in reality, despite being defined in the standard. Therefore, the present invention provides a method of using a content server with an existing D2D discovery method in order to advertise, through D2D discovery, real-time local area advertisements to device of a plurality of providers. A monitoring device requests advertisement information directly from a content server, or requests advertisement information from a different PLMN ProSe Function, and thereby the other PLMN ProSe Function may request advertisement information from a content server.

Method and appartus for advertising on basis of area using device-to-device discovery

The present invention relates to a method and apparatus for synchronization between electronic devices and, more particularly, to a synchronization method and apparatus for wireless communication between electronic devices. As a synchronization method for an electronic device performing wireless communication with other electronic devices, the method may include: checking, when two or more reference synchronization signals are received within a preset period, whether the received reference synchronization signals are synchronized; determining, when the received reference synchronization signals are not synchronized, to operate as a device sending a reference synchronization signal of a class lower than or equal to that of the lowest class reference synchronization signal among the received reference synchronization signals; sending a reference synchronization signal at a preset time in a synchronization frame designed to preserve temporal orthogonality between classes; and performing synchronization between reference synchronization signals in cooperation with different devices having sent reference synchronization signals.

Synchronization method and apparatus for wireless communication between electronic devices

A two-hop link transmission method and apparatus are provided. The method includes establishing a two-hop link and scheduling transmission on the two-hop link in a Device-To-Device (D2D) communication network. The two-hop link transmission method includes identifying neighbor terminals available for communication with the transmission terminal, selecting one of the neighboring terminals as a recipient terminal, determining a type of a link to be established with the selected neighboring terminal between a single-hop link and two-hop link types, selecting, when the two-hop link type is determined, a relay terminal among the neighboring terminals, establishing the two-hop link with the recipient terminal via the relay terminal, allocating a Multi-Hop Connection Identifier (MCID) for the two-hop link, and transmitting data to the recipient terminal through the two hop link.

Method and apparatus for two-hop link communication in wireless communication network

A method for supporting a device to device (D2D) communication in a base station of a mobile communication system according to one embodiment of the present specification comprises the steps of: determining one or more device groups including one or more devices among a plurality of devices; determining radio resources for measuring channels for the determined device groups; and transmitting, to the devices included in the respective groups, information on the radio resources for measuring the channels corresponding to the groups. According to the embodiment of the present specification, complexity of measuring a channel state in the D2D communication is reduced, and many more devices can measure the channel state using limited radio resources and can transmit and receive data. The present disclosure relates to re-5th-Generation (5G) or 5G communication system to be provided for supporting higher data rates Beyond 4th-Generation (4G) communication system such as Long Term Evolution (LTE).

Radio resource allocation method and apparatus for device to device communication in mobile communication system

The present disclosure relates to a pre-5-Generation (5G) or 5G communication system to be provided for supporting higher data rates Beyond 4-Generation (4G) communication system such as Long Term Evolution (LTE). The present disclosure provides an operating method and apparatus for supporting a handover to support a high reliability and low latency service in a wireless communication system. The method of operating the terminal includes receiving data from a service via a first base station (BS), transmitting, to the first BS, a bearer establishment command message between the first BS and a second BS determined by movement information of the terminal, and receiving, from the second BS, data transmitted from the second BS via the established bearer between the first BS and the second BS.

Handover method and apparatus in a wireless communication system

An electronic device is provided. The electronic device includes a first electromagnet mounted to a side surface of the electronic device and configured to generate a magnetic force, a data channel terminal configured to transmit and receive a signal for detecting whether another electronic device is attached, and a processor configured to determine at least one of a polarity and a strength of the magnetic force of the first electromagnet for an attachment or detachment between the electronic device and the other electronic device, control the first electromagnet according to at least one of the determined polarity and strength, and detect an attachment or detachment state between the electronic device and the other electronic device.

Method and apparatus for operating electronic device detachable from another electronic device

A terminal synchronization method and apparatus for use in a wireless communication system are provided. A synchronization method includes configuring, at the terminal, a synchronization signal reference time depending on whether a synchronization signal is received in an initial observation period as long as at least two frames, monitoring to receive the synchronization signal in an alternation period of a transmission period and a reception period, the alternation period following the initial observation period, updating the reference time depending on whether the synchronization signal is received in the reception period, transmitting the synchronization signal at the updated reference time in the transmission period, and updating the reference time depending on whether the synchronization signal is received in a dedicated observation period following the alternation period. The synchronization apparatus and method are advantageous in that synchronization is obtained without assistance of a base station, an Access Point (AP), etc.

Terminal synchronization method and apparatus for use in wireless communication network

A terminal and a distance estimation method thereof for use in a wireless communication system supporting device-to-device (D2D) communication are provided. The terminal includes a transceiver configured to communicate with other terminals and at least one processor configured to control the transceiver to transmit a discovery message including time information to the other terminals and receive distance information calculated by the other terminals, the distance information being calculated based on the time information. The present disclosure relates to a pre-5th-Generation (5G) or 5G communication system to be provided for supporting higher data rates Beyond 4th-Generation (4G) communication system, such as Long Term Evolution (LTE).

Terminal and distance estimation method thereof

The present invention relates to a method and an apparatus for switching a data path in a wireless communication system supporting device-to-device (D2D) communication. The method for switching a path of a base station in a wireless communication system supporting device-to-device communication, according to the present invention, comprises the steps of: receiving, from a first terminal, a measurement report including a D2D identifier of a second terminal that performs a direct communication with the first terminal; sending a query to a D2D server for a network identifier corresponding to the D2D identifier of the second terminal; and determining whether to switch a direct path between the first terminal and the second terminal to a local path on the basis of the network identifier of the second terminal obtained from the D2D server.

Method and apparatus for switching data path in wireless communication system supporting device-to-device communication

The present invention relates to a method for performing a D2D discovery and a terminal using the same. Particularly, the present invention relates to a method for performing a D2D discovery, which compares a congestion level of another discovery slot selected randomly or according to a preset pattern with a threshold or a congestion level of a current discovery slot and determines a discovery slot to transmit a discovery message and a transmission period of the discovery message according to a result of the comparison, and a terminal using the same. The present invention relates to a method for performing a D2D discovery using discovery resources including a plurality of discovery slots, and a terminal performing the same, the method comprising the steps of: broadcasting a discovery message by using a first discovery slot; comparing a congestion level of a selected second discovery slot with a predetermined congestion level value; determining a discovery slot to broadcast the discovery message on the basis of a result of the comparison; and broadcasting the discovery message by using the determined discovery slot.

Method for performing D2D discovery and terminal using same

A Lawful Interception (LI) method performed between a network and a terminal operating in Device-to-Device (D2D) communication mode to intercept D2D communication content are provided. The lawful interception method includes a D2D communication terminal according to the present disclosure includes activating a lawful interception function, storing information exchanged with a peer terminal through D2D communication, and transmitting a lawful interception report including the stored information.

Lawful interception method and apparatus of D2D communication-capable terminal

A network-assisted discovery method and apparatus for facilitating Device to Device (D2D) communication in the wireless communication system is provided. The network-assisted discovery method of a terminal in a wireless communication system, the method comprising, broadcasting a discovery signal information in a discovery signal transmission duration of the terminal, receiving assisted discovery information from a base station, determining whether the assisted discovery information comprises the discovery information of the terminal and determining whether to transmit a discovery transmission request message to the base station based on the result of the determination. The network-assisted discovery method and apparatus of the present disclosure is capable of mitigating the problems caused by resource collision and reducing power consumption of the device in the D2D wireless communication system.

Network-assisted discovery method and apparatus for use in wireless communication system

A scheduling method and apparatus using a non-orthogonal Connection IDentifier (CID) for use in a device-to-device communication system is provided. The scheduling method includes generating a non-orthogonal CID for communication with a counterpart terminal, determining slot indices for communication using the non-orthogonal CID, and communicating with the counterpart terminal through the slots indicated by the slot indices. The non-orthogonal CID-based scheduling method and apparatus is capable of selecting the slots for use in the non-orthogonal CID-based scheduling according to a rule so as to overcome CID collision in the system of using the non-orthogonal CID.

Growing community of inventors

Suwon-si, South Korea

Kyungkyu Kim