CHANNEL SELECTION FOR UPLINK ACCESS
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United States of America Patent
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Issued Date -
Dec 8, 2016
app pub date -
Aug 17, 2016
filing date -
Aug 11, 2011
priority date (Note) -
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Abstract
Systems, methods, and instrumentalities are disclosed for a wireless transmit/receive unit (WTRU) to transmit uplink information. The WTRU may have information such as data or control information to transmit to a network. The (WTRU) may request a common enhanced dedicated channel (E-DCH) resource from the network. The WTRU may receive an indication from the network to fallback using a random access channel, e.g. a Release 99 Random Access Channel (R99 RACH), a Release 99 Physical Random Access Channel (R99 PRACH), etc. The indication may be received via an acquisition indicator (E-AI). The indication may be a value of the E-AI. The WTRU may determine whether a condition is met. The WTRU may transmit the uplink information over the R99 PRACH if the condition is met.
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