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

APP PUB NO 20170303171A1
SERIAL NO

15516889

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ATTORNEY / AGENT: (SPONSORED)

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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)STOCKHOLM12205

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