Access method in communication system and device for performing same
AssigneeElectronics and Telecommunications Research Institute
InventorJae Heung Kim
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Abstract
An operation method of a terminal in a wireless communication system is disclosed. The operation method of the terminal comprises the steps of: receiving common information from any one among a plurality of base stations; and performing a random access procedure with a first base station among the plurality of base stations by using the common information, wherein the step of performing the random access procedure includes the steps of: transmitting a random access preamble; receiving a random access response; and transmitting an uplink message (RACH MSG3). Therefore, a performance of the communication system can be improved.
Claims18
An operation method of a terminal in a wireless communication system, the operation method comprising:
- receiving, from a base station, configuration information for a 2-step random access (RA) procedure;
- when an execution condition according to a first information element included in the configuration information is satisfied, transmitting, to the base station, an RA message (MSG) 1 including an RA preamble and an RA payload based on the configuration information;
- and
- receiving, from the base station, an RA MSG 2 in response to the RA MSG 1,
- wherein the first information element is a reference signal received power (RSRP) condition, and the 2-step RA procedure is performed instead of a 4-step RA procedure when channel quality between the terminal and the base station satisfies the RSRP condition.
An operation method of a base station in a wireless communication system, the operation method comprising:
- transmitting, to a terminal, configuration information for a 2-step random access (RA) procedure;
- receiving, from the terminal, a RA message (MSG) 1 by performing a monitoring operation using the configuration information;
- and
- when the RA MSG 1 is a 2-step RA MSG 1 of the 2-step RA procedure, transmitting, to the terminal, a 2-step RA MSG 2 of the 2-step RA procedure in response to the 2-step RA MSG 1,
- wherein a transmission resource for an RA preamble included in the 2-step RA MSG 1 is configured to be different from a transmission resource for an RA preamble included in a 4-step RA MSG 1, and the 2-step RA MSG 1 is distinguished from the 4-step RA MSG 1 based on the transmission resource.
An operation method of a base station in a wireless communication system, the operation method comprising:
- transmitting, to a terminal, configuration information for a 2-step random access (RA) procedure;
- receiving, from the terminal, an RA message (MSG) 1 by performing a monitoring operation using the configuration information;
- and
- when the RA MSG 1 is a 2-step RA MSG 1 of the 2-step RA procedure, transmitting, to the terminal, a 2-step RA MSG 2 of the 2-step RA procedure in response to the 2-step RA MSG 1,
- wherein a transmission resource for a RA preamble included in the 2-step RA MSG 1 is configured to be identical with a transmission resource for a RA preamble included in a 4-step RA MSG 1, and the 2-step RA MSG 1 is distinguished from the 4-step RA MSG 1 based on a RA preamble index.
Dependencies are inferred from the claim text.