Method and apparatus for transmitting multiple entry configured grant confirmation message in wireless communication system
Disclosed are: a communication technique for merging, with IoT technology, a 5G communication system for supporting a data transmission rate higher than that of a 4G system; and a system therefor. The present disclosure can be applied to intelligent services (for example, smart homes, smart buildings, smart cities, smart cars or connected cars, healthcare, digital education, small businesses, security- and safety-related services, and the like) on the basis of 5G communication technology and IoT-related technology. The present invention relates to a method and an apparatus for transmitting a confirmation message for a plurality of configured grants in a wireless communication system.
1. A method performed by a terminal in a wireless communication system, the method comprising:
receiving, from a base station, a radio resource control (RRC) message including configuration information for configuring a plurality of configured grants (CGs), the configuration information including a CG index for each of the plurality of CGs, wherein a maximum number of CGs configured for a serving cell group is 32, and wherein the CG index is configured based on an integer from 0 to 31;
identifying whether a confirmation of at least one CG has been triggered;
in case that the confirmation has been triggered and not cancelled, identifying whether there is an uplink resource allocated for a new transmission;
in case that there is the allocated uplink resource, generating a confirmation medium access control (MAC) control element (CE) having a fixed size of 32 bits, wherein one bit among the 32 bits of the confirmation MAC CE is associated with an activation or a deactivation of a configured grant and the one bit corresponds to a CG index configured for the serving cell group; and
transmitting, to the base station, the confirmation MAC CE.
2. The method of claim 1 ,
wherein identifying whether the confirmation for the at least one CG has been triggered comprises identifying whether a physical downlink control channel (PDCCH) indicating an activation or a deactivation of the at least one CG has been received, and
wherein a bit value of 1 indicates that the activation or the deactivation is applied for a corresponding CG.
3. The method of claim 2 , further comprising:
clearing the at least one CG based on a transmission of the confirmation MAC CE, in case that the confirmation MAC CE confirms the deactivation of the at least one CG.
4. The method of claim 1 , further comprising:
canceling the triggered confirmation, in case that the confirmation MAC CE is transmitted.
5. A method performed by a base station in a wireless communication system, the method comprising:
transmitting, to a terminal, a radio resource control (RRC) message including configuration information for configuring a plurality of configured grants (CGs), the configuration information including a CG index for each of the plurality of CGs, wherein a maximum number of CGs configured in a serving cell group is 32, and wherein the CG index is configured based on an integer from 0 to 31;
transmitting, to the terminal, a physical downlink control channel (PDCCH) to trigger a confirmation of at least one CG;
allocating an uplink resource for a new transmission; and
receiving, from the terminal, a confirmation medium access control (MAC) control element (CE) having a fixed size of 32 bits,
wherein one bit among the 32 bits of the confirmation MAC CE is associated with an activation or a deactivation of a configured grant and the one bit corresponds to a CG index configured in the serving cell group.
6. The method of claim 5 ,
wherein the PDCCH indicates an activation or a deactivation of the at least one CG, and
wherein a bit value of 1 indicates that the activation or the deactivation is applied for a corresponding CG.
7. The method of claim 6 , wherein the at least one CG is cleared in the terminal based on a transmission of the confirmation MAC CE, in case that the confirmation MAC CE confirms the deactivation of the at least one CG.
8. The method of claim 5 , wherein the triggered confirmation is canceled in the terminal based on a transmission of the confirmation MAC CE.
9. 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, a radio resource control (RRC) message including configuration information for configuring a plurality of configured grants (CGs), the configuration information including a CG index for each of the plurality of CGs, wherein a maximum number of CGs configured in a serving cell group is 32, and wherein the CG index is configured based on an integer from 0 to 31,
identify whether a confirmation of at least one CG has been triggered,
in case that the confirmation has been triggered and not cancelled, identify whether there is an uplink resource allocated for a new transmission,
in case that there is the allocated uplink resource, generate a confirmation medium access control (MAC) control element (CE) having a fixed size of 32 bits, wherein one bit among the 32 bits of the confirmation MAC CE is associated with an activation or a deactivation of a configured grant and the one bit corresponds to a CG index configured for the serving cell group, and
control the transceiver to transmit, to the base station, the confirmation MAC CE.
10. The terminal of claim 9 ,
wherein the controller is further configured to identify whether the confirmation for the at least one CG has been triggered comprises identifying whether a physical downlink control channel (PDCCH) indicating an activation or a deactivation of the at least one CG has been received, and
wherein a bit value of 1 indicates that the activation or the deactivation is applied for a corresponding CG.
11. The terminal of claim 10 , wherein the controller is further configured to clear the at least one CG based on a transmission of the confirmation MAC CE, in case that the confirmation MAC CE confirms the deactivation of the at least one CG.
12. The terminal of claim 9 , wherein the controller is further configured to cancel the triggered confirmation, in case that the confirmation MAC CE is transmitted.
13. 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, a radio resource control (RRC) message including configuration information for configuring a plurality of configured grants (CGs), the configuration information including a CG index for each of the plurality of CGs, wherein a maximum number of CGs configured in a serving cell group is 32, and wherein the CG index is configured based on an integer from 0 to 31,
control the transceiver to transmit, to the terminal, a physical downlink control channel (PDCCH) to trigger a confirmation of at least one CG,
allocate an uplink resource for a new transmission, and
control the transceiver to receive, from the terminal, a confirmation medium access control (MAC) control element (CE) having a fixed size of 32 bits,
wherein one bit among the 32 bits of the confirmation MAC CE is associated with an activation or a deactivation of a configured grant and the one bit corresponds to a CG index configured in the serving cell group.
14. The base station of claim 13 ,
wherein the PDCCH indicates an activation or a deactivation of the at least one CG,
wherein a bit value of 1 indicates that the activation or the deactivation is applied for a corresponding CG, and
wherein the at least one CG is cleared in the terminal based on a transmission of the confirmation MAC CE, in case that the confirmation MAC CE confirms the deactivation of the at least one CG.
15. The base station of claim 13 , wherein the triggered confirmation is canceled in the terminal based on a transmission of the confirmation MAC CE.