CN104170271A

5G,4G,3G

Title

Evolved node b and method for coherent coordinated multipoint transmission with per CSI-RS feedback

Application Number:

CN2013810149

Publication Date:

26-11-2014

Current Assignee:

NOT AVAILABLE

Family ID:

48870112

Application Date:

23-01-2013

Declaring Company:

APPLE INC , INTEL CORP

Publication Country:

US

Priority Date:

27-01-2012

View on Espacenet goto-link

Title

Evolved node b and method for coherent coordinated multipoint transmission with per CSI-RS feedback

Application Number:

CN2013810149

Family ID:

48870112

Publication Country:

US

Publication Date:

26-11-2014

Application Date:

23-01-2013

Priority Date:

27-01-2012

Current Assignee:

NOT AVAILABLE

Declaring Company:

APPLE INC , INTEL CORP

View on Espacenet goto-link

Abstract  Abstract

The invention generally claims for each CSI-RS feedback with coherent cooperation multi-point transmission of an evolved Node B (eNB) and the method of the embodiment. In some embodiments the eNB can configure a first collaboration point and second cooperation points to combine multiple node channel state information (CSI) reference signal (RS) (CSI-RS) in a predetermined resource unit of a resource block. the eNB may receive a CSI report as feedback from a user equipment (UE). CSI report may include a precoding matrix indicator (PMI) the precoding matrix indicator (PMI) CSI-RS based on multiple nodes to indicate the relative phase information between said first and second cooperation points. multi-node CSI-RS for CSI report may be limited to PIM has rank -1. the eNB can be configured at the at least first and second collaboration point based on the relative phase information for coherent joint transmission to the UE. the coherent joint transmission can also be based on single-node PMI are jointly beamforming.

Embodiments of an evolved Node B (eNB) and method for coherent coordinated multipoint transmission with per CSI-RS feedback are generally described herein. In some embodiments the eNB may configure a first cooperating point and a second cooperating point to jointly transmit a multi-node channel-state information (CSI) reference signal (RS) (CSI-RS) in predetermined resource elements of a resource block. The eNB may receive CSI reports as feedback from user equipment (UE). The CSI reports may include a precoding matrix indicator (PMI) indicating relative phase information between the first and second cooperating points based on the multi-node CSI-RS. The CSI reports for the multi-node CSI-RS may be restricted to a PMI of rank-1. The eNB may configure at least the first and second cooperating points for a coherent joint transmission to the UE based at least on the relative phase information. The coherent joint transmission may also be jointly beamformed based on single-node PMIs.

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