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US 10,075,929 B2Granted
Method and apparatus for network synchronization
AssigneeLG Electronics Inc.
InventorsYunjung Yi, Joonkui Ahn
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Abstract
A method and an apparatus for network synchronization are provided. The apparatus comprises a radio frequency (RF) unit for transmitting and receiving a radio signal and a processor operatively coupled to the RF unit, wherein the processor is configured for transmitting signals via the RF unit, wherein the processor performs network synchronization with neighboring cells.
Claims14
An apparatus for network synchronization, the apparatus comprising:
- a transceiver;
- and
- a processor that:
- controls the transceiver to receive a channel state information-reference signal (CSI-RS) according to a muting pattern from a macro cell,
- wherein the macro cell and the apparatus use separate frequencies;
- performs network synchronization with the macro cell based on the CSI-RS,
- applies a frame boundary offset between a downlink subframe and an uplink subframe,
- wherein the frame boundary offset is an interval by which the downlink subframe and the uplink subframe are separated, and
- controls the transceiver to transmit a signal by setting a start time for an uplink transmission based on the frame boundary offset and a timing advance (TA) received from a network,
- wherein the frame boundary offset is configured based on higher layer signaling,
- wherein the downlink subframe and the uplink subframe are time division duplex (TDD) subframes, and
- wherein the muting pattern matches a fake MBMS Single-Frequency Network (MBSFN) subframe pattern.
9 more elements
A method for network synchronization by a small cell, the method comprising:
- receiving a channel state information-reference signal (CSI-RS) according to a muting pattern from a macro cell,
- wherein the macro cell and the small cell use separate frequencies;
- performing network synchronization with the macro cell based on the CSI-RS;
- applying a frame boundary offset between a downlink subframe and an uplink subframe,
- wherein the frame boundary offset is an interval by which the downlink subframe and the uplink subframe are separated;
- and
- transmitting a signal by setting a start time for an uplink transmission
- based on the frame boundary offset and a timing advance (TA) received from a network,
- wherein the frame boundary offset is configured based on higher layer signaling,
- wherein the downlink subframe and the uplink subframe are time division duplex (TDD) subframes, and
- wherein the muting pattern matches a fake MBMS Single-Frequency Network (MBSFN) subframe pattern.
8 more elements
Dependencies are inferred from the claim text.