Method for controlling access of terminal in communication system
AssigneeElectronics and Telecommunications Research Institute
InventorJae Heung Kim
Life of this patent
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Abstract
Provided is a method for controlling the access of a terminal in a communication system. An operation method of a terminal comprises the steps of: receiving, from a base station, configuration information for a two-step random access procedure; transmitting, to the base station, RA MSG-A including an RA preamble and an RA payload, on the basis of the configuration information; and receiving, from the base station, RA MSG-B, which is a response to the RA MSG-A. Therefore, communication system performance can be improved.
Claims18
An operation method of a terminal in a communication system, the operation method comprising:
- receiving, from a base station, configuration information for a 2-step random access procedure;
- transmitting, to the base station, a random access (RA) message-A (MSG-A) including an RA preamble and an RA payload based on the configuration information;
- and
- receiving an RA MSG-B in response to the RA MSG-A from the base station,
- wherein
- the RA MSG-B includes one or more MAC sub protocol data units (subPDUs), each of the one or more MAC subPDUs includes a MAC subheader, and the MAC subheader includes a first indicator indicating a type of the MAC subPDU,
- the first indicator indicates that the MAC subPDU is a first type MAC subPDU including a backoff indicator (BI), that the MAC subPDU is a second type MAC subPDU including a fallback random access response (RAR), or that the MAC subPDU is a third type MAC subPDU including a successful RAR, and
- a size of the first indicator is 2 bits, a first bit of the 2 bits indicates the second type MAC subPDU, and a second bit of the 2 bits indicates the first type MAC subPDU or the third type MAC subPDU.
An operation method of a base station in a communication system, the operation method comprising:
- transmitting 2-step configuration information for a 2-step random access (RA) procedure to a terminal;
- transmitting 4-step configuration information for a 4-step random access procedure to the terminal;
- receiving a message 1 from the terminal by performing a monitoring operation using the 2-step configuration information and the 4-step configuration information;
- and
- when the message 1 is an RA message-A (MSG-A) of the 2-step RA procedure, transmitting an RA MSG-B including one or more MAC sub protocol data units (subPDUs) to the terminal,
- wherein
- each of the one or more MAC subPDUs includes a MAC subheader, and the MAC subheader includes a first indicator indicating a type of the MAC subPDU,
- the first indicator indicates that the MAC subPDU is a first type MAC subPDU including a backoff indicator (BI), that the MAC subPDU is a second type MAC subPDU including a fallback random access response (RAR), or that the MAC subPDU is a third type MAC subPDU including a successful RAR, and
- a size of the first indicator is 2 bits, a first bit of the 2 bits indicates the second type MAC subPDU, and a second bit of the 2 bits indicates the first type MAC subPDU or the third type MAC subPDU.
Dependencies are inferred from the claim text.