SYSTEM ACQUISITION IN A SHARED RADIO FREQUENCY SPECTRUM BAND
First Claim
1. A method for wireless communications, comprising:
- receiving, over a shared radio frequency spectrum band, a transmission from a base station comprising an indication of a listen before talk (LBT) mode of the base station;
determining, based at least in part on the indication of the LBT mode of the base station, a physical broadcast channel (PBCH) configuration of the base station; and
receiving a PBCH transmission according to the determined PBCH configuration.
1 Assignment
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Accused Products
Abstract
Methods, systems, and devices for wireless communications are described. In some wireless systems utilizing shared radio frequency spectrum bands, base stations may operate in different listen before talk (LBT) modes. For example, a base station may operate in an LBT enabled mode or a non-LBT enabled mode. A UE may perform system acquisition with the base station based on receiving acquisition signals (e.g., synchronization signals and physical broadcast channel (PBCH) signals) from the base station. These acquisition signals may depend on the LBT mode of the base station. For example, the frame timing and number of subframes for the acquisition signals may be based on the LBT mode of the base station. In some cases, a base station may adaptively switch LBT modes, and the UE may re-synchronize with the base station based on an LBT configuration period or a paging message from the base station.
46 Citations
30 Claims
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1. A method for wireless communications, comprising:
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receiving, over a shared radio frequency spectrum band, a transmission from a base station comprising an indication of a listen before talk (LBT) mode of the base station; determining, based at least in part on the indication of the LBT mode of the base station, a physical broadcast channel (PBCH) configuration of the base station; and receiving a PBCH transmission according to the determined PBCH configuration. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A method for wireless communications, comprising:
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identifying, at a base station, a listen before talk (LBT) mode of the base station; transmitting, over a shared radio frequency spectrum band, a transmission comprising an indication of the LBT mode of the base station; and transmitting a physical broadcast channel (PBCH) transmission according to a PBCH configuration, the PBCH configuration based at least in part on the LBT mode of the base station. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24)
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25. An apparatus for wireless communications, 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; receive, over a shared radio frequency spectrum band, a transmission from a base station comprising an indication of a listen before talk (LBT) mode of the base station; determine, based at least in part on the indication of the LBT mode of the base station, a physical broadcast channel (PBCH) configuration of the base station; and receive a PBCH transmission according to the determined PBCH configuration. - View Dependent Claims (26, 27, 28, 29)
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30. An apparatus for wireless communications, 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; identify, at a base station, a listen before talk (LBT) mode of the base station; transmit, over a shared radio frequency spectrum band, a transmission comprising an indication of the LBT mode of the base station; and transmit a physical broadcast channel (PBCH) transmission according to a PBCH configuration, the PBCH configuration based at least in part on the LBT mode of the base station.
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Specification