公开(公告)号：US20180159616A1

公开(公告)日：2018-06-07

申请号：US15736165

申请日：2016-02-10

Applicant: NEC Corporation

Inventor： Hiroaki AMINAKA ,  Kazushi MURAOKA ,  Taichi OHTSUJI

IPC: H04B7/155 ,  H04W92/18 ,  H04W8/00 ,  H04W8/08 ,  H04W88/04

Abstract: A D2D communication control apparatus (10) according to the present invention includes: a communication unit (11) configured to receive determination information that can be used to determine whether each of a plurality of radio terminals is capable of performing device-to-device (D2D) communication with another radio terminal; and a selection unit (12) configured to select, using the determination information between radio terminals that may operate as relay radio terminals, a candidate for a relay radio terminal that relays the communication between one of the plurality of radio terminals and a network, the relay radio terminal candidate transmitting a response signal in response to a first discovery signal transmitted from one of the radio terminals by performing D2D communication with the one of the plurality of radio terminals and performing cellular communication with the network.

公开(公告)号：US20180146500A1

公开(公告)日：2018-05-24

申请号：US15578271

申请日：2016-03-31

Applicant: NEC Corporation

Inventor： Kazushi MURAOKA ,  Hiroto SUGAHARA

IPC: H04W76/14 ,  H04W72/08 ,  H04W72/04 ,  H04W92/18 ,  H04W8/00 ,  H04W24/02

Abstract: A base station (2) is configured to schedule radio resources to device-to-device (D2D) transmissions (101A, 101B and 101C) performed by D2D communication pairs (3A, 3B and 3C) in accordance with an allocation rule that permits two D2D communication pairs (3A and 3C) that are not in proximity to each other to share an identical radio resource but prohibits two D2D communication pairs (3A and 3B) in proximity to each other from sharing an identical radio resource. Each D2D transmission (101) includes wirelessly transmitting from one radio terminal (1) directly to the other radio terminal (1) in each D2D communication pair (3) without passing through the base station (2). It is, thus, possible to enable efficient spatial reuse of radio resources in D2D transmissions performed by D2D communication pairs.