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US 10,375,626 B2Granted
Method and apparatus for transmitting downlink response to uplink transmission, and method and apparatus for transmitting synchronization signal
AssigneeElectronics and Telecommunications Research Institute
InventorsChoongil Yeh, JaeSheung Shin
Life of this patent
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Abstract
A base station determines whether a reception of each uplink signal transmitted by a plurality of terminals succeeds. The base station generates a response bit map representing whether the reception succeeds. Further, the base station transmits first downlink control information (DCI) including the response bit map to the plurality of terminals through a first downlink control channel.
Claims14
A transmitting method of a base station, comprising:
- determining whether a reception of each uplink signal transmitted by a plurality of terminals succeeds;
- generating a response bit map representing whether the reception succeeds;
- and
- transmitting first downlink control information (DCI) including the response bit map to the plurality of terminals through a first downlink control channel;
- wherein one narrowband subframe for a narrowband system to which the plurality of terminals belong includes a plurality of subframes, and
- a radio network temporary identifier (RNTI) for decoding of the first downlink control channel is determined based on a narrowband subframe number.
3 more elements
A transmitting method of a base station, comprising:
- scheduling an uplink resource in a first terminal group belonging to a first coverage and a second terminal group belonging to a second coverage larger than the first coverage in different transmission time interval (TTI) units;
- generating a response bit map representing whether a reception of a plurality of uplink signals transmitted through the uplink resource succeeds;
- and
- transmitting the response bit map using a first downlink control channel,
- wherein a TTI for the first terminal group corresponds to one narrowband subframe including a plurality of subframes, and
- a TTI for the second terminal group corresponds to a plurality of narrowband subframes.
3 more elements
A transmitting method of a base station, comprising:
- scheduling an uplink resource in a first terminal group belonging to a first coverage and a second terminal group belonging to a second coverage larger than the first coverage in different transmission time interval (TTI) units;
- generating a response bit map representing whether a reception of a plurality of uplink signals transmitted through the uplink resource succeeds;
- and
- transmitting the response bit map using a first downlink control channel,
- wherein the scheduling of the uplink resource includes:
- granting a first uplink resource present in a plurality of second narrowband subframes subsequent to a first narrowband subframe to the second terminal group, using a second downlink control channel in the first narrowband subframe including a plurality of subframes for a narrowband system.
3 more elements
Dependencies are inferred from the claim text.