PCT/IB2013/000777

INTER-CELL COOPERATION FOR MAKING HANDOVER DECISIONS IN MULTI-SECTOR DEPLOYMENTS

Details for PCT/IB2013/000777

Application No.

PCT Application Number

PCT/IB/2013/000777

Publication No.

PCT Publication Number

WO/2013/171558

Applicants

PCT Patent Applicants

TELEFONAKTIEBOLAGET L M ERICSSON (PUBL)

Agents

PCT Patent Agents

DE VOS, Daniel M.

Priority Data

PCT Patent Priority Data

US61/648,485 filed on May 17, 2012
US13/545,941 filed on July 10, 2012

PCT Pamphlet

The front page of the PCT Patent Application

PCT Pamphlet Front Page

Dates

Application Date

April 26, 2013

Publication Date

November 21, 2013

Earliest Priority Date

May 17, 2012

Deadlines

30 Month Date

30 Month National Phase Deadline.

November 17, 2014

31 Month Date

31 Month National Phase Deadline.

December 17, 2014

These dates are in the Past. Contact us to find out if National Phase entry is still possible.

Abstract

The application relates to methods for making handover decisions based on measurements not only from the serving base station but also from the target base station. The Handover procedure in LTE as defined in 3GPP TS 36.300 performs downlink measurements in the serving cell. However, in case of multi-sector deployments with high inter-cell interference these traditional measurements are not good enough, e.g. because differently sized sectors and cells can have a path loss imbalance between uplink and downlink caused by the heterogeneous network deployment. In such a scenario, the downlink RSRP based geometry measurement may not represent the uplink situation. Furthermore, traditional geometry measurement based on downlink CRS RSRP/RSRQ will overestimate the inter-cell interference to the target cell. These disadvantages are avoided and a better mobility measurements are achieved by a) sharing measurements between neighbouring base stations, preferably over the X2 interface; and b) performing uplink measurements on Sounding Reference Signals SRS and computing uplink geometry, which is the ratio of the received power from the UE at each cell.

Info

PCT Patent application PCT/IB2013/000777 was filed on April 26, 2013 by TELEFONAKTIEBOLAGET L M ERICSSON (PUBL). The title of this PCT Patent Application is "INTER-CELL COOPERATION FOR MAKING HANDOVER DECISIONS IN MULTI-SECTOR DEPLOYMENTS" and the patent specification was published as WO/2013/171558 on November 21, 2013.

The earliest priority date for the patent application is May 17, 2012 and therefore the 30 month national phase deadline for PCT/IB/2013/000777 is November 17, 2014 and the 31 month national phase deadline for PCT/IB/2013/000777 is December 17, 2014

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