Nec Corporation

Hideumi Hosobe

Yoshio Ueda

Masato Shindo

Provided is an HNB gateway device capable of, while in an operation in a sleep mode, deactivating function units other than functions units associated with a mode check message and a sleep mode release request message from another HNB-GW, and thereby enabling a power saving operation. An HNB gateway device () includes a function to obtain a usage rate of the HNB gateway device, relays signals between a switching center and an HNB, and transits to a sleep mode when the usage rate reaches or falls below a predetermined value. The HNB gateway device includes means (HNB-GW list management unit) for changing, upon transition to the sleep mode, an HNB gateway list in the HNB performing HNB registration on the HNB gateway device using RPC:SetParameterValues from an HMS.

HNB gateway device, femtocell system, and method of operating HNB-GW used for same with reduced electric power

In order to avoid deterioration in sound quality caused by band shortage between an HNB-GW and an HNB, in a femto system, an HNB-GWis connected to an HNBvia a network, and relays at least one of transmission and reception of voice data between an MGWand the HNB. A narrow band determination unitin the HNB-GWdetermines whether the band of the networkis a narrow band which is equal to or lower than a predetermined threshold. When it is determined that the band is a narrow band by the narrow band determination unit, a conversion unitconverts the voice data to decrease a bit rate of the voice data transferred to the HNBfrom the MGW

Gateway apparatus, relay method, program, femto system

The communication system includes a first base station that forms a first cell, a second base station that forms a second cell, and an identifier assignment device that assigns an identifier for identifying the second cell, wherein the first base station transmits first neighbor cell information containing identifier information of neighbor cells of the first cell to the second base station, and the second base station transmits the first neighbor cell information received from the first base station to the identifier assignment device.

Communication system, identifier assignment device, base station, identifier assignment method, and non-transitory computer readable medium embodying instructions for controlling a device

Growing community of inventors

Tokyo, Japan

Hideumi Hosobe