Method and apparatus for performing frequency measurement and setting frequency measurement for non-connection mode terminal
The present disclosure relates to a communication method and system for converging a 5th-Generation (5G) communication system for supporting higher data rates beyond a 4th-Generation (4G) system with a technology for Internet of Things (IoT). The present disclosure may be applied to intelligent services based on the 5G communication technology and the IoT-related technology, such as smart home, smart building, smart city, smart car, connected car, health care, digital education, smart retail, security and safety services.
1 . A method performed by a user equipment (UE) in a communication system, the method comprising:
receiving a radio resource control (RRC) release message;
receiving, from a base station, a system information block (SIB);
in case that the RRC release message includes neither a configuration for a new radio (NR) frequency list nor a configuration for a long-term evolution (LTE) frequency list, and the SIB includes first measurement configuration information including a configuration for a first frequency list, storing the configuration for the first frequency list of the first measurement configuration information of the SIB; and
performing measurement on a first frequency of the first frequency list based on a synchronization signal block (SSB) configuration corresponding to the first frequency, while the UE is in an RRC idle state or an RRC inactive state and a timer is running, wherein the SSB configuration corresponding to the first frequency is included in the first measurement configuration information of the SIB.
2 . The method of claim 1 , further comprising, in case that the RRC release message includes second measurement configuration information including a configuration for a second frequency list:
storing the configuration for the second frequency list of the second measurement configuration information of the RRC release message, and
performing measurement on a second frequency of the second frequency list based on an SSB configuration corresponding to the second frequency, while the UE is in the RRC idle state or the RRC inactive state and the timer is running.
3 . The method of claim 2 , wherein, in case that the second measurement configuration information does not include the SSB configuration corresponding to the second frequency and third measurement configuration information of the SIB includes the SSB configuration corresponding to the second frequency, the measurement on the second frequency of the second frequency list is performed based on the SSB configuration corresponding to the second frequency included in the SIB.
4 . The method of claim 1 , wherein the first frequency list is associated with NR.
5 . The method of claim 1 , wherein the SSB configuration includes information on a periodicity, a duration and an offset associated with an SSB, and
wherein information on a duration of the timer is included in the RRC release message.
6 . A user equipment (UE) in a communication system, the UE comprising:
a transceiver; and
at least one processor configured to:
receive a radio resource control (RRC) release message;
receive, from a base station, a system information block (SIB);
in case that the RRC release message includes neither a configuration for a new radio (NR) frequency list nor a configuration for a long-term evolution (LTE) frequency list, and the SIB includes first measurement configuration information including a configuration for a first frequency list, store the configuration for the first frequency list of the first measurement configuration information of the SIB; and
perform measurement on a first frequency of the first frequency list based on a synchronization signal block (SSB) configuration corresponding to the first frequency, while the UE is in an RRC idle state or an RRC inactive state and a timer is running, wherein the SSB configuration corresponding to the first frequency is included in the first measurement configuration information of the SIB.
7 . The UE of claim 6 , wherein the at least one processor is configured to, in case that the RRC release message includes second measurement configuration information including a configuration for a second frequency list:
store the configuration for the second frequency list of the second measurement configuration information of the RRC release message,
perform measurement on a second frequency of the second frequency list based on an SSB configuration corresponding to the second frequency, while the UE is in the RRC idle state or the RRC inactive state and the timer is running.
8 . The UE of claim 7 , wherein, in case that the second measurement configuration information does not include the SSB configuration corresponding to the second frequency and third measurement configuration information of the SIB includes the SSB configuration corresponding to the second frequency, the measurement on the second frequency of the second frequency list is performed based on the SSB configuration corresponding to the second frequency included in the SIB.
9 . The UE of claim 6 , wherein the first frequency list is associated with NR.
10 . The UE of claim 6 , wherein the SSB configuration includes information on a periodicity, a duration and an offset associated with an SSB, and
wherein information on a duration of the timer is included in the RRC release message.
11 . A method performed by a base station in a communication system, the method comprising:
generating a system information block (SIB) including first measurement configuration information including a configuration for a first frequency list, and
transmitting, to a user equipment (UE), the SIB,
wherein a first frequency of the first frequency list and a synchronization signal block (SSB) configuration corresponding to the first frequency are used for measurement while the UE is in an RRC idle state or an RRC inactive state and a timer is running, in case that a radio resource control (RRC) release message includes neither a configuration for a new radio (NR) frequency list nor a configuration for a long-term evolution (LTE) frequency list, wherein the SSB configuration corresponding to the first frequency is included in the first measurement configuration information of the SIB.
12 . The method of claim 11 , wherein a second frequency of a second frequency list and an SSB configuration corresponding to the second frequency are used for measurement while the UE is in the RRC idle state or the RRC inactive state and the timer is running, in case that the RRC release message includes second measurement configuration information including a configuration for a second frequency list.
13 . The method of claim 12 , wherein, in case that the second measurement configuration information does not include the SSB configuration corresponding to the second frequency and third measurement configuration information of the SIB includes the SSB configuration corresponding to the second frequency, the SSB configuration corresponding to the second frequency included in the SIB is used for the measurement.
14 . The method of claim 11 , wherein the first frequency list is associated with NR.
15 . The method of claim 11 , wherein the SSB configuration includes information on a periodicity, a duration and an offset associated with an SSB, and
wherein information on a duration of the timer is included in the RRC release message.
16 . A base station in a communication system, the base station comprising:
a transceiver; and
at least one processor configured to:
generate a system information block (SIB) including first measurement configuration information including a configuration for a first frequency list, and
transmit, to a user equipment (UE), the SIB,
wherein a first frequency of the first frequency list and a synchronization signal block (SSB) configuration corresponding to the first frequency are used for measurement while the UE is in an RRC idle state or an RRC inactive state and a timer is running, in case that a radio resource control (RRC) release message includes neither a configuration for a new radio (NR) frequency list nor a configuration for a long-term evolution (LTE) frequency list, wherein the SSB configuration corresponding to the first frequency is included in the first measurement configuration information of the SIB.
17 . The base station of claim 16 , wherein a second frequency of a second frequency list and an SSB configuration corresponding to the second frequency are used for measurement while the UE is in the RRC idle state or the RRC inactive state and the timer is running, in case that the RRC release message includes second measurement configuration information including a configuration for a second frequency list.
18 . The base station of claim 17 , wherein, in case that the second measurement configuration information does not include the SSB configuration corresponding to the second frequency and third measurement configuration information of the SIB includes the SSB configuration corresponding to the second frequency, the SSB configuration corresponding to the second frequency included in the SIB is used for the measurement.
19 . The base station of claim 16 , wherein the first frequency list is associated with NR.
20 . The base station of claim 16 , wherein the SSB configuration includes information on a periodicity, a duration and an offset associated with an SSB, and
wherein information on a duration of the timer is included in the RRC release message.