Method and apparatus for transmitting uplink control signal

    公开(公告)号:US10680783B2

    公开(公告)日:2020-06-09

    申请号:US16071717

    申请日:2017-01-11

    Abstract: The present disclosure provides a method and an apparatus for transmitting an uplink control signal. The method includes: transmitting M predefined sequences on two transmission symbols within a transmission time interval, and determining an acknowledgement (ACK) message or a negative acknowledgement (NACK) message according to the M predefined sequences and mapping patterns of the M predefined sequences in a time domain and a frequency domain, where M is a positive integer. By means of the above technical solution, a problem that a transmission structure for transmitting the ACK message and the NACK message is imperfect when the transmission time interval is equal to the length of two symbols is solved, and the transmitting of the ACK message and the NACK message when the transmission time interval is equal to the length of two symbols is perfected.

    Method and apparatus for transmission of synchronization signal

    公开(公告)号:US10666484B2

    公开(公告)日:2020-05-26

    申请号:US15756028

    申请日:2016-09-21

    Abstract: The present disclosure provides a method and an apparatus for transmission of a synchronization signal. The method includes: transmitting, by a base station, the synchronization signal repeatedly and periodically to a terminal. In one repetition period, the synchronization signal is transmitted over time corresponding to a plurality of Orthogonal Frequency Division Multiplexing (OFDM) symbols in one or more subframes. The synchronization signal is a Primary Synchronization Signal (PSS) or a Secondary Synchronization Signal (SSS). Alternatively, the method includes: receiving, by a terminal, the synchronization signal transmitted from a base station repeatedly and periodically. In this way, the problem associated with inappropriate design of the synchronization signals in the NB-LTE system can be solved and proper transmission of the synchronization signals in the narrow band system can be achieved.

    Method and apparatus for sending and receiving downlink control channel

    公开(公告)号:US10477532B2

    公开(公告)日:2019-11-12

    申请号:US15751366

    申请日:2016-07-27

    Abstract: Disclosed are a method and an apparatus for sending and receiving a downlink control channel. The method comprises: a base station determines position(s) of one or more search spaces according to at least one of a coverage level and a message type, and sends a downlink control channel in the search space, the coverage level comprising at least a non-coverage enhanced level (CE0) and coverage enhanced levels (CE1, CE2, CE3), the message type comprising at least random access response (RAR), paging, radio resource control (RRC), and transmission power control (TPC); the search space comprising: a collective search space (CSS), a dedicated search space (dedicated SS), and a non-user search space (non-USS); and the position of the search space comprising: a narrow-band/frequency domain position, a time domain position, and a set position.

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