Method for transmitting and receiving random access preamble in wireless communication system and device therefor

    公开(公告)号:US11617207B2

    公开(公告)日:2023-03-28

    申请号:US16821367

    申请日:2020-03-17

    Abstract: Provided is a method for transmitting a random access preamble by a user equipment (UE) in a wireless communication system supporting a narrow band-Internet of things (NB-IoT). Specifically, the UE transmits the random access preamble to an eNB in a subcarrier allocated by the eNB according to a specific preamble structure and receives a random access response message from the eNB in response to the random access preamble. In this case, the random access preamble is repeatedly transmitted 16 times during a predetermined duration and then, a gap is inserted for a predetermined time and the predetermined duration is determined by multiplying a transmission duration in which the random access preamble is transmitted by the number of repeated transmission times.

    Method for transmitting/receiving synchronization signal in wireless communication system and apparatus therefor

    公开(公告)号:US11570734B2

    公开(公告)日:2023-01-31

    申请号:US17214183

    申请日:2021-03-26

    Abstract: Disclosed are a method for transmitting and receiving a synchronization signal in a wireless communication system supporting NarrowBand-Internet of Things (NB-IoT) and an apparatus therefor. Specifically, the method for transmitting and receiving a synchronization signal may include: receiving, from a base station, a narrowband synchronization signal; and performing a cell search procedure for the base station based on the narrowband synchronization signal, in which the narrowband synchronization signal may include a narrowband primary synchronization signal and a narrowband secondary synchronization signal, the narrowband primary synchronization signal and the narrowband secondary synchronization signal may be transmitted in different subframe, and the subframe in which the narrowband secondary synchronization signal is transmitted may be configured differently according to a type of a radio frame structure.

    Method for transmitting and receiving synchronization signal in wireless communication system and apparatus for method

    公开(公告)号:US11388688B2

    公开(公告)日:2022-07-12

    申请号:US17082757

    申请日:2020-10-28

    Abstract: Disclosed are a method for transmitting and receiving a synchronization signal in a wireless communication system and an apparatus therefor. Specifically, a method for performing synchronization signal by transmitting and receiving a synchronization signal includes: receiving, from a base station, a primary synchronization signal (PSS) and a secondary synchronization signal (SSS); and performing synchronization by using the received PSS and the received SSS, in which a sequence for the SSS may be generated by a product between a first sequence and a second sequence and the number of first sequences may be configured to be larger than the number of second sequences.

Patent Agency Ranking