Method for Network Co-ordination in a Mobile Communications System and Apparatus Thereof

• US 20110305195A1
• Filed: 10/27/2008
• Published: 12/15/2011
• Est. Priority Date: 10/27/2008
• Status: Active Grant

• Current Assignee: Fraunhofer Gesellschaft Zur Foerderung Der Angewandten Forsching E.V., Nokia Solutions and Networks US LLC (Nokia Corporation)
• Original Assignee: Fraunhofer Gesellschaft Zur Foerderung Der Angewandten Forsching E.V., Nokia Solutions and Networks US LLC (Nokia Corporation)
• Inventors: Forck, Andreas, Haustein, Thomas, Jungnickel, Volker, Schellmann, Malte, Schulz, Egon
• Granted Patent: US 8,830,926 B2
• Time in Patent Office: Days
• US Class Current: 370/328
• CPC Class Codes: H04B 7/022 Site diversity; Macro-diversity using two or more spaced independent antennas H04B7/04
• CPC Class Codes: H04B 7/026 Co-operative diversity, e.g. using fixed or mobile stations as relays
• CPC Class Codes: H04B 7/0617 for beam forming

Abstract

Method and Apparatus thereof for coordinating a joint transmission between a plurality of cooperative access nodes serving a plurality of user terminals in a mobile communications system, including the steps of: receiving channel information by said access nodes from user terminals that are being served by said access nodes; exchanging between said access nodes of said received channel information thus ensuring that all channel information is distributed to all cooperative access nodes; processing all received channel information by each one of said access nodes, and determining by said access nodes using said processed channel information, of a channel estimation for said joint transmission.

Claims

1. Method for coordinating a joint transmission between a plurality of cooperative access nodes serving a plurality of user terminals in a mobile communications system, comprising the steps of:

receiving channel information by said access nodes from user terminals that are being served by said access nodes;

exchanging between said access nodes of said received channel information thus ensuring that all channel information is distributed to all cooperative access nodes;

processing all received channel information by each one of said access nodes, and

determining by said access nodes using said processed channel information, of a channel estimation for said joint transmission.

2. Method according to claim 1, wherein said exchange of said channel information is done over the X2 interface of the access nodes.

3. Method according to claim 1, wherein said channel information comprises of channel feedback data.

4. Access node arranged for coordinating a joint transmission having means adapted to execute the method of claim 1.

5. Access node according to claim 4, wherein said access node is at least one of the following:

a base station, an access point, a base station controller, an enhanced nodeB, a nodeB, a radio network controller.

6. Mobile communications system comprising at least one access node according to claim 4.