Method and device for effectively performing standby mode operation in next generation mobile communication system
The present disclosure relates to a communication technique for combining, with IoT technology, a 5G communication system for supporting a data transmission rate higher than that of a 4G system, and to a system therefor. The present disclosure may be applied to an intelligent service (e.g., a smart home, a smart building, a smart city, a smart car or connected car, healthcare, digital education, retail business, security and safety-related service, etc.), based on a 5G communication technology and an IoT-related technology. The present disclosure suggests a method for effectively performing a standby mode operation in a next generation mobile communication, and a device therefor and, more particularly, to a method for efficiently reselecting a cell, and a device therefor. Also, the present disclosure relates to: a method for making a report, including beam measurement information, at the time of measurement reporting of a user equipment, and a device therefor; a method for performing measurement reporting by way of layer 1/layer 2 signaling, and a device therefor; and a method for changing between RRC modes including an RRC inactive mode, and a device therefor.
1. A method performed by a terminal in a communication system, the method comprising:
receiving measurement configuration information from a base station, the measurement configuration information including measurement object information and information on a number of beams for identifying a cell-level measurement result;
performing measurement of one or more beams based on the measurement configuration information;
identifying whether each measurement value of the one or more beams exceeds a threshold value configured by the base station;
generating a measurement report message based on the identification; and
transmitting the measurement report message to the base station,
wherein the measurement object information includes information on a frequency to be measured and information on a number of beams to be measured and beam indices of the beams to be measured for the frequency,
wherein in case that measurement values of one or more beams of one or more serving cells exceed the threshold value, the measurement report message includes a cell-level measurement result of the one or more serving cells, and includes a beam measurement result of the one or more serving cells,
wherein in case that measurement values of one or more beams of one or more neighboring cells exceed the threshold value, the measurement report message includes a cell-level measurement result of the one or more neighboring cells, and includes a beam measurement result of the one or more neighboring cells, and
wherein the cell-level measurement results of the one or more serving cells and the one or more neighboring cells are based on an average of measurement values of the one or more beams, which exceed the threshold value, of the one or more serving cells and the one or more neighboring cells and the information on the number of beams for identifying the cell-level measurement result.
2. The method of claim 1 , wherein the beam measurement results of the one or more serving cells and the one or more neighboring cells include a beam measurement value of each beam of which measurement value exceeds the threshold value.
3. The method of claim 1 , wherein the measurement report message includes the cell-level measurement result and the beam measurement result of the one or more neighboring cells in a number of best neighboring cells, and
wherein information of the number of the best neighboring cells is included in the measurement configuration information.
4. A method performed by a base station in a communication system, the method comprising:
transmitting measurement configuration information to a terminal, the measurement configuration information including measurement object information and information on a number of beams for identifying a cell-level measurement result; and
receiving a measurement report message corresponding to the measurement configuration information,
wherein the measurement object information includes information on a frequency to be measured and information on a number of beams to be measured and beam indices of the beams to be measured for the frequency,
wherein in case that measurement values of one or more beams of one or more serving cells exceed a threshold value configured by the base station, the measurement report message includes a cell-level measurement result of the one or more serving cells, and includes a beam measurement result of the one or more serving cells,
wherein in case that measurement values of one or more beams of one or more neighboring cells exceed the threshold value, the measurement report message includes a cell-level measurement result of the one or more neighboring cells, and includes a beam measurement result of the one or more neighboring cells, and
wherein the cell-level measurement results of the one or more serving cells and the one or more neighboring cells are based on an average of measurement values of the one or more beams, which exceed the threshold value, of the one or more serving cells and the one or more neighboring cells and the information on the number of beams for identifying the cell-level measurement result.
5. The method of claim 4 , wherein the beam measurement results of the one or more serving cells and the one or more neighboring cells include a beam measurement value of each beam of which measurement value exceeds the threshold value.
6. The method of claim 4 , wherein the measurement report message includes the cell-level measurement result and the beam measurement result of the one or more neighboring cells in a number of best neighboring cells, and
wherein information of the number of the best neighboring cells is included in the measurement configuration information.
7. A terminal in a communication system, the terminal comprising:
a transceiver; and
a controller coupled with the transceiver and configured to:
receive measurement configuration information from a base station, the measurement configuration information including measurement object information and information on a number of beams for identifying a cell-level measurement result,
perform measurement of one or more beams based on the measurement configuration information,
identify whether each measurement value of the one or more beams exceeds a threshold value configured by the base station,
generate a measurement report message based on the identification, and
transmit the measurement report message to the base station,
wherein the measurement object information includes information on a frequency to be measured and information on a number of beams to be measured and beam indices of the beams to be measured for the frequency,
wherein in case that measurement values of one or more beams of one or more serving cells exceed the threshold value, the measurement report message includes a cell-level measurement result of the one or more serving cells, and includes a beam measurement result of the one or more serving cells,
wherein in case that measurement values of one or more beams of one or more neighboring cells exceed the threshold value, the measurement report message includes a cell-level measurement result of the one or more neighboring cells, and includes a beam measurement result of the one or more neighboring cells, and
wherein the cell-level measurement results of the one or more serving cells and the one or more neighboring cells are based on an average of measurement values of the one or more beams, which exceed the threshold value, of the one or more serving cells and the one or more neighboring cells and the information on the number of beams for identifying the cell-level measurement result.
8. The terminal of claim 7 , wherein the beam measurement results of the one or more serving cells and the one or more neighboring cells include a beam measurement value of each beam of which measurement value exceeds the threshold value.
9. The terminal of claim 7 , wherein the measurement report message includes the cell-level measurement result and the beam measurement result of the one or more neighboring cells in a number of best neighboring cells, and
wherein information of the number of the best neighboring cells is included in the measurement configuration information.
10. A base station in a communication system, the base station comprising:
a transceiver; and
a controller coupled with the transceiver and configured to:
transmit measurement configuration information to a terminal, the measurement configuration information including measurement object information and information on a number of beams for identifying a cell-level measurement result, and
receive a measurement report message corresponding to the measurement configuration information,
wherein the measurement object information includes information on a frequency to be measured and information on a number of beams to be measured and beam indices of the beams to be measured for the frequency,
wherein in case that measurement values of one or more beams of one or more serving cells exceed a threshold value configured by the base station, the measurement report message includes a cell-level measurement result of the one or more serving cells, and includes a beam measurement result of the one or more serving cells,
wherein in case that measurement values of one or more beams of one or more neighboring cells exceed the threshold value, the measurement report message includes a cell-level measurement result of the one or more neighboring cells, and includes a beam measurement result of the one or more neighboring cells, and
wherein the cell-level measurement results of the one or more serving cells and the one or more neighboring cells are based on an average of measurement values of the one or more beams, which exceed the threshold value, of the one or more serving cells and the one or more neighboring cells and the information on the number of beams for identifying the cell-level measurement result.
11. The base station of claim 10 , wherein the beam measurement results of the one or more serving cells and the one or more neighboring cells include a beam measurement value of each beam of which measurement value exceeds the threshold value.
12. The base station of claim 10 , wherein the measurement report message includes the cell-level measurement result and the beam measurement result of the one or more neighboring cells in a number of best neighboring cells, and
wherein information of the number of the best neighboring cells is included in the measurement configuration information.