Panasonic Corporation

Panasonic Intellectual Property Management Co., Ltd.

Yoshiharu Ohsaki

Jifeng Li

Masahiko Nanri

Ichirou Inaba

Provided is a network management device capable of suppressing interference of a preamble between cells while securing a predetermined resource. An FGW () as the device is a network management device for managing a plurality of base station devices each of which perform communication with communication terminal devices by the SC-FDMA method, wherein the FGW () is provided with a parameter determination unit () for determining parameters related to an uplink preamble with respect to at least one among the plurality of base station devices, and a parameter notification unit () for sending notifications of the determined parameters to the base station devices for which the parameters have been determined; wherein the parameter determination unit () determines the parameters so that transmitted sequences of the preamble do not overlap between at least two of the plurality of base station devices.

Network management device, base station device and network management method

Provided is a compact base station apparatus (HeNB) whereby frame timing can precisely be synchronized between HeNB and MeNB, thereby suppressing the interference in an upstream channel. In HeNB (), which forms a cell smaller than a cell formed by MeNB, frame timing detecting unit () detects, based on a sync signal received from MeNB, the frame timing of MeNB; a control unit () uses the frame timing of MeNB to set the frame timing of a downstream channel in HeNB (); a transmission RF unit () transmits, in accordance with the frame timing of the downstream channel in HeNB (), a preamble to MeNB; and a TA command extracting unit () acquires, from a response signal responsive to the preamble, information indicating a difference in frame timing between MeNB and HeNB ().

Growing community of inventors

Kanagawa, Japan

Yoshiharu Ohsaki