HANDLING HANDOVER OF AN UE IN CASE CELL SPECIFIC REFERENCE SIGNALS INTERFER WITH A PHYSICAL DOWNLINK CONTROL CHANNEL

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United States of America Patent

SERIAL NO

15516889

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Abstract

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A method performed by a network node, for handling handover of a user equipment (UE), wherein the network node serves a first cell comprising one or more UEs. When the network node has detected that a Signaling Radio Bearer (SRB) is determined to be scheduled for a UE in handover from the first cell to a second cell, the network node increases the number of OFDM-symbols included in a control region of a downlink OFDM-subframe sent in the first cell in a Transmission Time Interval (TTI) related to the handover. By increasing the number of OFDM-symbols of the control region only during the handover, the physical downlink control channel (PDCCH) is spread in time into symbols not polluted by CRS symbols from neighboring cells. Thereby the number of unsuccessful handovers and lost service is effectively reduced.

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Patent Owner(s)

Patent OwnerAddressTotal Patents
TELEFONAKTIEBOLAGET L M ERICSSON (PUBL)STOCKHOLM12611

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
BUDIC, Miroslav Murphy, US 30 334
HEDLUND, Leo Älvsjö, SE 14 146
JONSSON, Mikael Vällingby, SE 9 11
MÜLLER, Walter Upplands Väsby, SE 112 560
MANN, Karl Ottawa, CA 14 237

Cited Art Landscape

Patent Info (Count) # Cites Year
 
FUTUREWEI TECHNOLOGIES, INC. (1)
* 2012/0207,126 Control Channel Transmission and Reception Method and System 23 2012
 
TELEFONAKTIEBOLAGET L M ERICSSON (PUBL) (1)
* 2012/0093,118 Methods and Devices for Transmitting a Control Message 5 2009
 
LG ELECTRONICS INC. (1)
* 2014/0153,539 METHOD AND DEVICE FOR SETTING A CONTROL CHANNEL AND A DATA CHANNEL IN A WIRELESS COMMUNICATION SYSTEM 3 2012
* Cited By Examiner

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