Method and apparatus for supporting flexible ue bandwidth in next generation communication system
AssigneeSamsung Electronics Co., Ltd.
InventorsAnil AGIWAL, Youngbin CHANG
Life of this patent
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Abstract
A method and a system for supporting flexible user equipment (UE) bandwidth by the UE during a random access are provided. The method includes transmitting, to a base station, a random access preamble over a first bandwidth selected among a plurality of channel bandwidths of the UE, receiving, from the base station, a random access response over a second bandwidth selected among the plurality of channel bandwidths, and transmitting, to the base station, a scheduled transmission message over a third bandwidth selected among the plurality of channel bandwidths of the UE.
Claims20
A method performed by a terminal in a wireless communication system, the method comprising:
- transmitting, to a base station, a random access preamble;
- receiving, from the base station, a first physical downlink control channel (PDCCH) associated with a random access response (RAR);
- receiving, from the base station, the RAR on a physical downlink shared channel (PDSCH) based on the first PDCCH;
- transmitting, to the base station, a physical uplink shared channel (PUSCH) scheduled by an uplink grant of the RAR;
- and
- receiving, from the base station, second PDCCH associated with a contention resolution message,
- wherein a bandwidth of the first PDCCH for RAR and a bandwidth of the second PDCCH for the contention resolution message is less than or equal to a reception channel bandwidth of the terminal.
A method performed by a base station in a wireless communication system, the method comprising:
- receiving, from a terminal, a random access preamble;
- transmitting, to the terminal, a first physical downlink control channel (PDCCH) associated with a random access response (RAR);
- transmitting, to the terminal, the RAR on a physical downlink shared channel (PDSCH) based on the first PDCCH;
- receiving, from the terminal, a physical uplink shared channel (PUSCH) scheduled by an uplink grant of the RAR;
- and
- transmitting, to the terminal, second PDCCH associated with a contention resolution message,
- wherein a bandwidth of the first PDCCH for RAR and a bandwidth of the second PDCCH for the contention resolution message is less than or equal to a reception channel bandwidth of the terminal.
A terminal in a wireless communication system, the terminal comprising:
- a transceiver configured to transmit or receive a signal;
- and
- at least one processor coupled with the transceiver and configured to:
- transmit, to a base station, a random access preamble,
- receive, from the base station, a first physical downlink control channel (PDCCH) associated with a random access response (RAR),
- receive, from the base station, the RAR on a physical downlink shared channel (PDSCH) based on the first PDCCH,
- transmit, to the base station, a physical uplink shared channel (PUSCH) scheduled by an uplink grant of the RAR, and
- receive, from the base station, second PDCCH associated with a contention resolution message,
- wherein a bandwidth of the first PDCCH for RAR and a bandwidth of the second PDCCH for the contention resolution message is less than or equal to a reception channel bandwidth of the terminal.
A base station in a wireless communication system, the base station comprising:
- a transceiver configured to transmit or receive a signal;
- and
- at least one processor coupled with the transceiver and configured to:
- receive, from a terminal, a random access preamble,
- transmit, to the terminal, a first physical downlink control channel (PDCCH) associated with a random access response (RAR),
- transmit, to the terminal, the RAR on a physical downlink shared channel (PDSCH) based on the first PDCCH,
- receive, from the terminal, a physical uplink shared channel (PUSCH) scheduled by an uplink grant of the RAR, and
- transmit, to the terminal, second PDCCH associated with a contention resolution message,
- wherein a bandwidth of the first PDCCH for RAR and a bandwidth of the second PDCCH for the contention resolution message is less than or equal to a reception channel bandwidth of the terminal.
Dependencies are inferred from the claim text.