Method and device for applying plurality of DRXs in carrier aggregation technology in mobile communication system
The present disclosure relates to a communication technique that merges IoT technology with a 5G communication system for supporting higher data transmission rates than 4G systems, and a system therefor. The present disclosure may be applied to intelligent services (for example, smart homes, smart buildings, smart cities, smart cars or connected cars, healthcare, digital education, retail business, security and safety-related services, etc.) on the basis of 5G communication technology and IoT-related technology. The present invention discloses a method and device for setting and applying a plurality of Discontinuous receptions (DRXs).
1. A method performed by a terminal in a wireless communication system, the method comprising:
receiving, from a base station, first discontinuous reception (DRX) configuration information for a first DRX group and second DRX configuration information for a second DRX group;
performing physical downlink control channel (PDCCH) monitoring for the first DRX group in a first active time based on the first DRX configuration information, and performing PDCCH monitoring for the second DRX group in a second active time based on the second DRX configuration information;
receiving, from the base station, a medium access control (MAC) control element (CE) associated with a DRX cycle in one of the first DRX group and the second DRX group; and
using one DRX cycle for each of the first DRX group and the second DRX group, based on the MAC CE,
wherein the first DRX group and the second DRX group are determined based on a frequency range (FR).
2. The method of claim 1 , further comprising:
transmitting, to the base station, capability information on whether the terminal supports the second DRX group,
wherein the second DRX configuration information is received based on the capability information.
3. The method of claim 1 , further comprising:
receiving, from the base station, configuration information on a serving cell; and
identifying a DRX group to which the serving cell belongs based on the configuration information,
wherein the second DRX configuration information includes information on drx-ondurationtimer and information on drx-inactivitytimer.
4. A method performed by a base station in a wireless communication system, the method comprising:
transmitting, to a terminal, first discontinuous reception (DRX) configuration information for a first DRX group and second DRX configuration information for a second DRX group;
transmitting a physical downlink control channel (PDCCH) for the first DRX group using a first active time based on the first DRX configuration information, and transmitting the PDCCH for the second DRX group using a second active time based on the second DRX configuration information; and
transmitting, to the terminal, a medium access control (MAC) control element (CE) associated with a DRX cycle for one of the first DRX group and the second DRX group,
wherein one DRX cycle is used for each of the first DRX group and the second DRX group, based on the MAC CE, and
wherein the first DRX group and the second DRX group are determined based on a frequency range (FR).
5. The method of claim 4 , further comprising:
receiving, from the terminal, capability information on whether the terminal supports the second DRX group,
wherein the second DRX configuration information is transmitted based on the capability information, and
wherein the second DRX configuration information includes information on drx-ondurationtimer and information on drx-inactivitytimer.
6. A terminal in a wireless communication system, the terminal comprising:
a transceiver; and
a controller configured to:
control the transceiver to receive, from a base station, first discontinuous reception (DRX) configuration information for a first DRX group and second DRX configuration information for a second DRX group,
perform physical downlink control channel (PDCCH) monitoring for the first DRX group in a first active time based on the first DRX configuration information, and perform PDCCH monitoring for the second DRX group in a second active time based on the second DRX configuration information,
control the transceiver to receive, from the base station, a medium access control (MAC) control element (CE) associated with a DRX cycle in one of the first DRX group and the second DRX group, and
use one DRX cycle for each of the first DRX group and the second DRX group, based on the MAC CE,
wherein the first DRX group and the second DRX group are determined based on a frequency range (FR).
7. The terminal of claim 6 ,
wherein the controller is further configured to control the transceiver to transmit, to the base station, capability information on whether the terminal supports the second DRX group, and
wherein the second DRX configuration information is received based on the capability information.
8. The terminal of claim 6 ,
wherein the controller is further configured to control the transceiver to receive, from the base station, configuration information on a serving cell, and identify a DRX group to which the serving cell belongs based on the configuration information, and
wherein the second DRX configuration information includes information on drx-ondurationtimer and information on drx-inactivitytimer.
9. A base station in a wireless communication system, the base station comprising:
a transceiver; and
a controller configured to:
control the transceiver to transmit, to a terminal, first discontinuous reception (DRX) configuration information for a first DRX group and second DRX configuration information for a second DRX group;
control the transceiver to transmit a physical downlink control channel (PDCCH) for the first DRX group using a first active time based on the first DRX configuration information, and transmitting the PDCCH for the second DRX group using a second active time based on the second DRX configuration information; and
control the transceiver to transmit, to the terminal, a medium access control (MAC) control element (CE) associated with a DRX cycle for one of the first DRX group and the second DRX group,
wherein one DRX cycle is used for each of the first DRX group and the second DRX group, based on the MAC CE, and
wherein the first DRX group and the second DRX group are determined based on a frequency range (FR).
10. The base station of claim 9 ,
wherein, in case that the first DRX configuration information includes information on a short DRX cycle, the one DRX cycle is the short DRX cycle,
wherein, in case that the first DRX configuration information does not include the information on the short cycle, the one DRX cycle is a long DRX cycle,
wherein the controller is further configured to control the transceiver to receive, from the terminal, capability information on whether the terminal supports the second DRX group, and transmit the second DRX configuration information based on the capability information, and
wherein the second DRX configuration information includes information on drx-ondurationtimer and information on drx-inactivitytimer.
11. The method of claim 1 , further comprising:
stopping a timer, in case that the timer is running in at least one of the first DRX group or the second DRX group, wherein the timer is one of an inactivity timer (drx-inactivitytimer) or an on-duration timer (drx-ondurationtimer),
wherein, in case that the short DRX cycle is configured based on the first DRX configuration, a short cycle timer is started for each of the first DRX group and the second DRX group after the MAC CE is received.
12. The method of claim 1 , further comprising:
identifying that a DRX inactivity timer (drx-inactivitytimer) for at least one of the first DRX group or the second DRX group is expired; and
in case that a short DRX cycle is configured based on the first DRX configuration, starting a short cycle timer for the at least one of the first DRX group or the second DRX group, after an expiry of the drx-inactivitytimer.
13. The method of claim 4 ,
wherein, in case that the first DRX configuration information includes information on a short DRX cycle, the one DRX cycle is the short DRX cycle, and
wherein, in case that the first DRX configuration information does not include the information on the short cycle, the one DRX cycle is a long DRX cycle.
14. The terminal of claim 6 ,
wherein the controller is further configured to stop, a timer, in case that the timer is running in at least one of the first DRX group or the second DRX group, wherein the timer is one of an inactivity timer (drx-inactivitytimer) or an on-duration timer (drx-ondurationtimer), and
wherein, in case that the short DRX cycle is configured based on the first DRX configuration a short cycle timer is started for each of the first DRX group and the second DRX group after the MAC CE is received.
15. The terminal of claim 6 ,
wherein the controller is further configured to identify that a DRX inactivity timer (drx-inactivitytimer) for at least one of the first DRX group or the second DRX group is expired, and in case that a short DRX cycle is configured based on the first DRX configuration, start a short cycle timer for the at least one of the first DRX group or the second DRX group, after an expiry of the drx-inactivitytimer.