公开(公告)号：US09357573B2

公开(公告)日：2016-05-31

申请号：US14090390

申请日：2013-11-26

Applicant: Electronics and Telecommunications Research Institute

Inventor： You Sun Hwang ,  Kwang Ryul Jung ,  Mi Jeong Yang ,  Hyung Deug Bae ,  Soon Yong Lim ,  Moon Soo Jang ,  Hyeong Jun Park ,  Nam Hoon Park

IPC: H04W4/00 ,  H04W76/02 ,  H04W8/00 ,  H04W76/04

CPC classification number: H04W76/023 ,  H04W8/005 ,  H04W76/14 ,  H04W76/23

Abstract: A method of providing service continuity between cellular communication and device-to-device communication is disclosed. A procedure for switching between cellular communication and device-to-device communication according to an example embodiment of the present invention may include transferring, by a gateway, a D2D bearer creation request message to an MME, transferring, by the MME, the D2D bearer creation request message to a base station, mapping, by the base station, D2D bearer QoS to D2D radio bearer QoS and transmitting an RRC connection reconfiguration message to terminals, receiving, by the base station, an RRC connection reconfiguration completion message indicating creation of a D2D radio bearer from the terminals, transmitting, by the base station, a D2D bearer creation response message indicating creation of a D2D bearer to the MME, and transferring, by the MME, the D2D bearer creation response message to the gateway.

Abstract translation: 公开了一种提供蜂窝通信与设备到设备之间通信的连续性的方法。 根据本发明的示例性实施例的用于蜂窝通信和设备到设备之间切换的过程可以包括由网关向MME传送D2D承载创建请求消息，由MME将所述D2D承载 创建请求消息到基站，由基站将D2D承载QoS映射到D2D无线电承载QoS，并向终端发送RRC连接重配置消息，由基站接收指示创建一个或多个UE的RRC连接重配置完成消息 D2D无线电承载，由基站向MME发送指示创建D2D承载的D2D承载创建响应消息，并由MME向网关发送D2D承载创建响应消息。

公开(公告)号：US08918111B2

公开(公告)日：2014-12-23

申请号：US13709548

申请日：2012-12-10

Applicant: Electronics and Telecommunications Research Institute

Inventor： Jae Sheung Shin ,  You Sun Hwang ,  Ae Soon Park

IPC: H04W4/00 ,  H04W4/08

CPC classification number: H04W4/70 ,  H04L1/0003 ,  H04L1/0009 ,  H04L1/0025 ,  H04W4/08 ,  H04W4/80 ,  H04W72/1278

Abstract: Provided are a device-to-device (D2D) group communication method and a device using the same. The method includes transmitting a scheduling request for D2D group communication to a base station, receiving first radio resource information for a status report of D2D data to be transmitted from the base station, transmitting a D2D buffer status report to the base station through a first radio resource, receiving second radio resource information including D2D resource allocation information necessary for the D2D group communication from the base station, and transmitting control information for the D2D group communication including a D2D group identifier (ID) as a device ID and D2D user data to two or more communication partner devices belonging to the D2D group.

Abstract translation: 提供了一种设备到设备（D2D）组通信方法和使用其的设备。 该方法包括向基站发送对D2D组通信的调度请求，从基站接收要发送的D2D数据的状态报告的第一无线资源信息，通过第一无线电发送D2D缓冲状态报告给基站 资源，接收包括从基站进行的D2D组通信所需的D2D资源分配信息的第二无线资源信息，以及将包含作为设备ID的D2D组标识符（ID）和D2D用户数据的D2D组通信的控制信息发送给二 或更多的属于D2D组的通信伙伴设备。

公开(公告)号：US09392629B2

公开(公告)日：2016-07-12

申请号：US14022660

申请日：2013-09-10

Applicant: Electronics and Telecommunications Research Institute

Inventor： You Sun Hwang ,  Hyeong Jun Park ,  Nam Hoon Park

IPC: H04W76/02 ,  H04W56/00 ,  H04W74/08 ,  H04W92/18

CPC classification number: H04W76/14 ,  H04W56/001 ,  H04W56/002 ,  H04W74/0833 ,  H04W92/18

Abstract: A method for setting synchronization between terminals performing device-to-device (D2D) communication based on a cellular communication system is disclosed. The method for setting synchronization between terminals includes receiving a message instructing synchronization setting with an opposite terminal from a base station, selecting a first preamble transmitted for a synchronization setting with the opposite terminal based on the message instructing synchronization setting, transmitting the selected first preamble to the opposite terminal, receiving a second preamble from the opposite terminal, and setting the synchronization with the opposite terminal using a reception timing of the second preamble when the second preamble is a preamble designated in the message instructing synchronization setting. Thus, when the present invention is used, synchronization between two terminals performing direct communication may be set using a physical layer random access channel resource which has been used in an existing mobile communication system.

Abstract translation: 公开了一种用于设置基于蜂窝通信系统执行设备到设备（D2D）通信的终端之间的同步的方法。 用于设置终端之间的同步的方法包括从基站接收指示与相对终端进行同步设置的消息，基于指示同步设置的消息，选择与对方终端进行同步设置而发送的第一前同步码，将所选择的第一前同步码发送到 相对终端，从相对终端接收第二前同步码，并且当第二前同步码是在指示同步设置的消息中指定的前导码时，使用第二前导码的接收定时来设置与对方终端的同步。 因此，当使用本发明时，可以使用已经在现有移动通信系统中使用的物理层随机接入信道资源来设置执行直接通信的两个终端之间的同步。