Granted Patent B2

US 12,684,515 · App. 18/152,503 · Granted Jul 14, 2026

Inventor: Tae Joong Kim (Daejeon, KR)

Assignee: Electronics and Telecommunications Research Institute

H04W60/00H04W52/367

Abstract

Claims (49)

1 . An operation method of a base station in a communication system, the operation method comprising:

determining a first transmission power as an initial transmission power value when the base station is powered on;

transmitting, to registration target terminals, a synchronization signal and system information by using the first transmission power;

performing a registration procedure with the registration target terminals based on the synchronization signal and the system information;

increasing the first transmission power by a predetermined transmission power value when one or more of the registration target terminals fail to register during the registration procedure; and

providing a private service using the increased first transmission power when the registration procedure with all the registration target terminals is successful based on the increased first transmission power,

wherein the performing of the registration procedure comprises:

activating a timer to which a waiting time for registration is set;

performing the registration procedure with all the registration target terminals based on the synchronization signal and the system information;

determining the registration procedure as ‘succeeded’ when the registration for all the registration target terminals is completed within an active period of the timer; and

determining the registration procedure as ‘failed’ when the registration for at least one of the registration target terminals is not completed within the active period of the timer.

2 . The operation method according to claim 1 , wherein the transmitting of the synchronization signal and system information comprises:

generating the synchronization signal and the system information to include configuration information for a random access procedure;

setting a transmission power for transmitting the synchronization signal and the system information to the first transmission power; and

transmitting the synchronization signal and the system information using the first transmission power.

3 . An operation method of a base station in a communication system, the operation method comprising:

determining a first transmission power as an initial transmission power value when the base station is powered on;

transmitting, to registration target terminals, a synchronization signal and system information by using the first transmission power, which is a maximum transmission power;

identifying whether registration states of all the registration target terminals are maintained based on the synchronization signal and the system information;

reducing the first transmission power by a predetermined transmission power value when the registration states of all the registration target terminals are maintained; and

providing a private service using the reduced first transmission power when the registration states of all the registration target terminals are maintained,

wherein the identifying of whether the registration states of the registration target terminals are maintained comprises:

activating a timer to which a deregistration time is set;

determining a result of the identifying as ‘maintained’ when the registration states of already registered terminals continue to be maintained within an active period of the timer; and

determining the result of the identifying as ‘deregistered’ when the registration states of the registration target terminals do not continue to be maintained within the active period of the timer.

4 . The operation method according to claim 3 , wherein the transmitting of the synchronization signal and system information comprises:

generating the synchronization signal and the system information to include configuration information for a random access procedure;

setting the maximum transmission power to the first transmission power; and

transmitting the synchronization signal and the system information using the first transmission power.

5 . The operation method according to claim 3 , wherein the private service is provided using a transmission power equal to or higher than a minimum transmission power level at which the registration states of the registration target terminals are maintained.

6 . A base station comprising:

a processor;

a memory electronically communicating with the processor; and

instructions stored in the memory,

wherein when executed by the processor, the instructions cause the base station to perform:

determining a first transmission power as an initial transmission power value when the base station is powered on;

transmitting, to registration target terminals, a synchronization signal and system information by using the first transmission power;

performing a registration procedure with the registration target terminals based on the synchronization signal and the system information;

increasing the first transmission power by a predetermined transmission power value when one or more of the registration target terminals fail to register during the registration procedure; and

providing a private service using the increased first transmission power when the registration procedure with all the registration target terminals is successful based on the increased first transmission power,

wherein in the performing of the registration procedure, the instructions further cause the base station to perform:

activating a timer to which a waiting time for registration is set;

performing the registration procedure with all the registration target terminals based on the synchronization signal and the system information;

determining the registration procedure as ‘succeeded’ when the registration for all the registration target terminals is completed within an active period of the timer; and

determining the registration procedure as ‘failed’ when the registration for at least one of the registration target terminals is not completed within the active period of the timer.

7 . The base station according to claim 6 , wherein in the transmitting of the synchronization signal and the system information, the instructions further cause the base station to perform:

generating the synchronization signal and the system information to include configuration information for a random access procedure;

setting a transmission power for transmitting the synchronization signal and the system information to the first transmission power; and

transmitting the synchronization signal and the system information to the registration target terminals using the first transmission power.

Assignments (1)

Priority Claims (1)

Continuity (1)

References Cited (26)