DISCOVERY AND RANDOM ACCESS FOR SHARED SPECTRUM
First Claim
1. A method for wireless communication, comprising:
- determining a discovery reference signal (DRS) interval for transmission of a DRS over a shared radio frequency spectrum band;
determining a set of synchronization signal (SS) blocks for transmission of the DRS based at least in part on a set of transmission beams, wherein each SS block of the set of SS blocks indicates a random access configuration;
transmitting, over the shared radio frequency spectrum band, the set of SS blocks during the DRS interval using one or more transmission beams of the set of transmission beams; and
receiving, from a first user equipment (UE), a random access message during the DRS interval based at least in part on the random access configuration for at least one SS block of the set of SS blocks.
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Accused Products
Abstract
Methods, systems, and devices for wireless communication are described that involve determining multiple beamformed transmission beams for transmission of an opportunistic or multi-beam discovery reference signal (DRS) over a shared radio frequency spectrum band. The base station may determine a contention exempt transmission (CET) period for the shared spectrum band and transmit the DRS using multiple transmission beams during CET period or the base station may perform a listen before talk (LBT) procedure, and transmit, based on the LBT procedure, the DRS over a shared radio frequency spectrum band. The base station may transmit an indication of the type of DRS transmission, a subframe offset, random access configurations, and/or error correcting codes to enable a user equipment to discover, connect to, and acquire timing information associated with the network.
37 Citations
30 Claims
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1. A method for wireless communication, comprising:
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determining a discovery reference signal (DRS) interval for transmission of a DRS over a shared radio frequency spectrum band; determining a set of synchronization signal (SS) blocks for transmission of the DRS based at least in part on a set of transmission beams, wherein each SS block of the set of SS blocks indicates a random access configuration; transmitting, over the shared radio frequency spectrum band, the set of SS blocks during the DRS interval using one or more transmission beams of the set of transmission beams; and receiving, from a first user equipment (UE), a random access message during the DRS interval based at least in part on the random access configuration for at least one SS block of the set of SS blocks. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
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20. A method for wireless communication, comprising:
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determining a discovery reference signal (DRS) interval for reception of a DRS over a shared radio frequency spectrum band; receiving, during the DRS interval, a synchronization signal (SS) block indicating a random access configuration; determining a random access opportunity based at least in part on the random access configuration; and transmitting, to a base station, a random access request message during the random access opportunity. - View Dependent Claims (21, 22, 23, 24, 25)
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26. An apparatus for wireless communication, in a system comprising:
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a processor; memory in electronic communication with the processor; and instructions stored in the memory, wherein the instructions are executable by the processor to; determine a discovery reference signal (DRS) interval for transmission of a DRS over a shared radio frequency spectrum band; determine a set of synchronization signal (SS) blocks for transmission of the DRS based at least in part on a set of transmission beams, wherein each SS block of the set of SS blocks indicates a random access configuration; transmit, over the shared radio frequency spectrum band, the set of SS blocks during the DRS interval using one or more transmission beams of the set of transmission beams; and receive, from a first user equipment (UE), a random access message during the DRS interval based at least in part on the random access configuration for at least one SS block of the set of SS blocks. - View Dependent Claims (27, 28, 29)
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30. An apparatus for wireless communication, in a system comprising:
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a processor; memory in electronic communication with the processor; and instructions stored in the memory, wherein the instructions are executable by a processor to; determine a discovery reference signal (DRS) interval for reception of a DRS over a shared radio frequency spectrum band; receive, during the DRS interval, a synchronization signal (SS) block indicating a random access configuration; determine a random access opportunity based at least in part on the random access configuration; and transmit, to a base station, a random access request message during the random access opportunity.
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Specification