Techniques for multimedia broadcast multicast service transmissions in unlicensed spectrum
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United States of America Patent
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Mar 27, 2018
Grant Date -
Feb 2, 2017
app pub date -
Jul 28, 2016
filing date -
Jul 31, 2015
priority date (Note) -
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Abstract
A method and apparatus for adjusting preamble transmissions to maintain synchronization with other network entities operating in an unlicensed spectrum during wireless communications are described. The method and apparatus include accessing, by a second node, a contention-based medium currently accessed by a first node transmitting a first burst of data. The method and apparatus further include transmitting, by the second node, a second burst of data over the accessed medium, the second burst of data having an associated preamble configured not to interfere with a joint transmission portion of the first burst of data. The first and second nodes may be enhanced-multimedia broadcast multicast service (eMBMS) nodes. Moreover, the joint transmission portion of the first burst of data may include transmission of one or more multicast-broadcast single-frequency network (MBSFN) subframes.
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