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

• US 9,949,184 B2
• Filed: 01/06/2017
• Issued: 04/17/2018
• Est. Priority Date: 09/12/2011
• Status: Active Grant

• Current Assignee: NTT Docomo Incorporated (Nippon Telegraph and Telephone Corporation)
• Original Assignee: NTT Docomo Incorporated (Nippon Telegraph and Telephone Corporation)
• Inventors: Ishii, Hiroyuki
• Primary Examiner(s): Eisner, Ronald
• Application Number:
  US15/400,658
• Publication Number:
  US 20170118684A1
• Time in Patent Office: 466 Days
• Field of Search: 455 7- 25
• CPC Class Codes: H04W 16/14 Spectrum sharing arrangements between different networks
• CPC Class Codes: H04W 28/0215 based on user or device properties, e.g. MTC-capable devices services for machine-to-machine communication [M2M] or machine type communication [MTC] H04W4/70; wireless resource selection or allocation plan definition based on terminal or device properties H04W72/51
• CPC Class Codes: H04W 36/04 Reselecting a cell layer in multi-layered cells
• CPC Class Codes: H04W 36/22 for handling the traffic
• CPC Class Codes: H04W 36/38 by fixed network equipment
• CPC Class Codes: H04W 76/10 Connection setup
• CPC Class Codes: H04W 76/14 Direct-mode setup
• CPC Class Codes: H04W 76/18 Management of setup rejection or failure
• CPC Class Codes: H04W 76/20 Manipulation of established connections
• CPC Class Codes: H04W 76/30 Connection release
• CPC Class Codes: H04W 8/082 for traffic bypassing of mobility servers, e.g. location registers, home PLMNs or home agents
• CPC Class Codes: H04W 84/045 using private Base Stations, e.g. femto Base Stations, home Node B

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

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

at least one macro-base-station-to-the-user-equipment (BS2UE) communication transmitter/receiver 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 transmitter/receiver to receive second user-plane data from a server through the small-node device using a wireless D2UE communication link,

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

wherein the D2UE communication transmitter/receiver establishes the wireless D2UE communication link in response to the first control-plane message, and

wherein the D2UE communication transmitter/receiver releases the wireless D2UE communication link when a radio link failure of the wireless BS2UE communication link is detected by the BS2D communication transmitter/receiver.

2. In a cellular telecommunications network, a mobile station to receive offloaded data from a small-node device, the mobile station comprising:

at least one macro-base-station-to-the-user-equipment (BS2UE) communication transmitter/receiver 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 transmitter/receiver to receive second user-plane data from a server through the small-node device using a wireless D2UE communication link,

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

wherein the D2UE communication transmitter/receiver establishes the wireless D2UE communication link responsive to the first control-plane message, and

wherein the D2UE communication transmitter/receiver stops transmitting signals in the wireless D2UE communication link when a radio link failure of the wireless BS2UE communication link is detected by the BS2D communication transmitter/receiver.