IP Library Granted Patent US 9,578,564
Granted Patent B2
US 9,578,564 · App. 14/872,924 · Granted Feb 21, 2017

Method and apparatus at the physical and link layer for mobile communications

Inventor: Hiroyuki Ishii (Palo Alto, CA)
Assignee: NTT DOCOMO, INC.
H04W36/04H04W8/082H04W16/14H04W36/22H04W36/38H04W76/02H04W76/04H04W76/06H04W84/045
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Quick Facts
Patent No.
US 9,578,564
App. No.
14/872,924
Granted
Feb 21, 2017
Kind
B2
Abstract

In a cellular telecommunications network, a mobile communication system to offload data traffic from base stations to small-node devices, includes a radio base station, a plurality of small-node devices, a macro-base-station-to-the-small-node-device (BS2D) communication section configured to receive a first control-plane message from the radio base station over a BS2D communication link, a small-node-device-to-user-equipment (D2UE) communication section configured to transmit user-plane data to a user equipment over a wireless D2UE communication link established responsive to the first control-plane message, and a center small-node device. The center small-node device includes a buffer section, a backhaul communication section configured to receive the user-plane traffic data from a server over a backhaul link, and is configured to manage D2UE connections between the plurality of small-node devices and the mobile station, buffer data to be transmitted in downlink and uplink for the plurality of small-node devices, and conduct a link adaptation for the D2UE connections.

Claims (8)

1. In a cellular telecommunications network, a mobile station to receive offloaded data from multiple small-node devices, comprising:

at least one macro-base-station-to-the-user-equipment (BS2UE) communication section to receive both control-plane data and first user-plane data from a base station over a wireless BS2UE communication link; and

a small-node-device-to-the-user-equipment (D2UE) communication section to receive second user-plane data from a server through a plurality of small-node devices using a wireless D2UE communication link,

wherein the BS2UE communication section receives a first control-plane message from the base station over the wireless BS2UE communication link,

wherein the D2UE communication section establishes the wireless D2UE communication link responsive to the first control-plane message;

and wherein the second user-plane data is scrambled by a sequence specific to the mobile station in the wireless D2UE communication link.

2. The mobile station of claim 1 , wherein identification numbers of the plurality of small-node devices are included in a first control signal.

3. The mobile station of claim 1 , wherein an identification number of the sequence is included in a first control signal.

Assignments (2)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Nov 12, 2015
From: ISHII, HIROYUKI
To: DOCOMO INNOVATIONS, INC.
Reel/Frame 037019/0942 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Nov 12, 2015
From: DOCOMO INNOVATIONS, INC.
To: NTT DOCOMO, INC.
Reel/Frame 037019/0968 →
Continuity (5)
Division 14344570
Provisional Application 61616309 · Mar 27, 2012
Provisional Application 61607901 · Mar 7, 2012
Provisional Application 61533382 · Sep 12, 2011
Related Publication 20160057670A1 · Feb 25, 2016