Downlink subframe shortening in time-division duplex (TDD) systems

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United States of America Patent

PATENT NO 11895059
APP PUB NO 20210083834A1
SERIAL NO

17096130

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Abstract

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A guard period for switching between uplink and downlink subframes is created by shortening a downlink subframe, i.e., by not transmitting during one or more symbol intervals at the end of the subframe. A grant message includes signaling indicating when a shortened subframe is being transmitted. An example method is implemented in a receiving node configured to receive data from a transmitting node in subframes having a predetermined number of symbol intervals. In an LTE system, this receiving node may be a UE, and the subframes are downlink subframes. This example method includes determining that a received subframe is to be shortened, relative to the predetermined number of symbol intervals and, in response to this determination, disregarding a last part of the received subframe by disregarding one or more symbols at the end of the received subframe when processing the received subframe.

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Patent Owner(s)

Patent OwnerAddress
TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)STOCKHOLM SWE STOCKHOLM

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Furuskog, Johan Stockholm, SE 129 3288
Parkvall, Stefan Stockholm, SE 671 9461
Sahlin, Henrik Mölnlycke, SE 254 3206
Zhang, Qiang Sollentuna, SE 790 5324

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