Apparatus and method for handling collisions of transmissions in wireless communication system

Abstract

The disclosure relates to a 5 th generation (5G) or pre-5G communication system for supporting a higher data transmission rate, which is subsequent to the 4 th generation (4G) system such as long-term evolution (LTE). An operation method of a terminal in a wireless communication system includes identifying a priority between uplink (UL) data and sidelink data, transmitting the at least one of the UL data or the sidelink data based on the priority, in case that a first medium access control (MAC) control element (CE) is included in a MAC protocol data unit (PDU) of the UL data, the UL data has a higher priority than the sidelink data, and in case that a second MAC CE is included in the MAC PDU of the UL data, the sidelink data has a higher priority than the UL data.

What is claimed is: 
     
         1 . An operation method of a terminal in a wireless communication system, the method comprising:
 identifying a priority between uplink (UL) data and sidelink data,   transmitting the at least one of the UL data or the sidelink data based on the priority,   in case that a first medium access control (MAC) control element (CE) is included in a MAC protocol data unit (PDU) of the UL data, the UL data has a higher priority than the sidelink data, and   in case that a second MAC CE is included in the MAC PDU of the UL data, the sidelink data has a higher priority than the UL data.   
     
     
         2 . The method of  claim 1 , wherein the transmitting of the at least one of the UL data and the sidelink data comprises:
 transmitting a first data having a higher priority between the UL data and the sidelink data based on the identified priority, in case that the terminal is not capable of simultaneous transmissions of the UL data and the sidelink data.   
     
     
         3 . The method of  claim 1 , wherein the transmitting of the at least one of the UL data and the sidelink data comprises:
 transmitting a second data using a first transmission power and a third data having a lower priority between the UL data and the sidelink data using a second transmission power, wherein the second transmission power is a lower priority than the first transmission power, in case that the terminal is unable to simultaneously transmit the UL data and the sidelink data with a predetermined transmission power.   
     
     
         4 . The method of  claim 3 , wherein a total of the first transmission power and the second transmission power does not exceed a maximum transmission power. 
     
     
         5 . The method of  claim 1 , wherein identifying the priority further comprises:
 identifying that a priority of the UL data is higher than a priority of the sidelink data, if the priority value of the UL data is lower than a first configured threshold, and   identifying that the priority of the sidelink data is higher than the priority of the UL data, if a priority value of the sidelink data is lower than a second configured threshold.   
     
     
         6 . The method of  claim 5 ,
 wherein the first configured threshold and the second configured threshold are configured to the terminal.   
     
     
         7 . The method of  claim 5 ,
 wherein the priority value of the UL data configured to the terminal has one of 16 values, and   wherein the priority value of the sidelink data configured to the terminal has one of 8 values.   
     
     
         8 . The method of  claim 5 ,
 wherein an increasing priority value indicates a lower priority.   
     
     
         9 . The method of  claim 1 , further comprising:
 transmitting at least one of a scheduling request for the UL data or a scheduling request for the sidelink data,   wherein the at least one of the scheduling requests for the UL data or the scheduling request for the sidelink data is identified based on a priority of a logical channel associated with the scheduling request for the UL data or the scheduling request for the sidelink data.   
     
     
         10 . The method of  claim 1 ,
 wherein the priority of the UL data and the sidelink data is determined based on at least one of a logical channel of the for a MAC CE included in the UL data or the sidelink data,   wherein a MAC CE for buffer status report (BSR) with exception of BSR included for padding has a higher priority than a MAC CE for sidelink BSR with exception of sidelink BSR included for padding,   wherein the MAC CE for the sidelink BSR with exception of the sidelink BSR included for padding has a higher priority than a MAC CE for UL BSR included for padding, and   wherein the MAC CE for the UL BSR included for padding has a higher priority than a MAC CE for sidelink BSR included for padding.   
     
     
         11 . A terminal in a wireless communication system, the terminal comprising:
 a transceiver; and   a processor coupled with the transceiver and configured to:   identify a priority between uplink (UL) data and sidelink data,   transmit the at least one of the UL data or the sidelink data based on the priority,   in case that a first medium access control (MAC) control element (CE) is included in a MAC protocol data unit (PDU) of the UL data, the UL data has a higher priority than the sidelink data, and   in case that a second MAC CE is included in the MAC PDU of the UL data, the sidelink data has a higher priority than the UL data.   
     
     
         12 . The terminal of  claim 11 , wherein the processor is further configured to:
 transmit a first data having a higher priority between the UL data and the sidelink data based on the identified priority, in case that the terminal is not capable of simultaneous transmissions of the UL data and the sidelink data.   
     
     
         13 . The terminal of  claim 11 , wherein the processor is further configured to:
 transmit a second data using a first transmission power and a third data having a lower priority between the UL data and the sidelink data using a second transmission power,   wherein the second transmission power is a lower priority than the first transmission power, in case that the terminal is unable to simultaneously transmit the UL data and the sidelink data with a predetermined transmission power.   
     
     
         14 . The terminal of  claim 13 , wherein a total of the first transmission power and the second transmission power does not exceed the maximum transmission power. 
     
     
         15 . The terminal of  claim 11 , wherein the processor is further configured to:
 identify that a priority of the UL data is higher than a priority of the sidelink data, if a priority value of the UL data is lower than a first configured threshold, and   identify that the priority of the sidelink data is higher than the priority of the UL data, if a priority value of the sidelink data is lower than a second configured threshold.   
     
     
         16 . The terminal of  claim 15 ,
 wherein the first configured threshold and the second configured threshold are configured to the terminal.   
     
     
         17 . The terminal of  claim 15 ,
 wherein the priority value of the UL data configured to the terminal has one of 16 values, and   wherein the priority value of the sidelink data configured to the terminal has one of 8 values.   
     
     
         18 . The terminal of  claim 15 ,
 wherein an increasing priority value indicates a lower priority.   
     
     
         19 . The terminal of  claim 11 , wherein the processor is further configured to:
 transmit at least one of a scheduling request for the UL data or a scheduling request for the sidelink data,   wherein the at least one of the scheduling request for the UL data or the scheduling request for the sidelink data is identified based on a priority of a logical channel associated with the scheduling request for the UL data or the scheduling request for the sidelink data.   
     
     
         20 . The terminal of  claim 11 ,
 wherein the priority of the UL data and the sidelink data is determined based on at least one of a logical channel of the for a MAC CE included in the UL data or the sidelink data,   wherein a MAC CE for a buffer status report (BSR) with exception of BSR included for padding has a higher priority than a MAC CE for sidelink BSR with exception of sidelink BSR included for padding,   wherein the MAC CE for the sidelink BSR with exception of the sidelink BSR included for padding has a higher priority than a MAC CE for UL BSR included for padding, and   wherein the MAC CE for the UL BSR included for padding has a higher priority than a MAC CE for sidelink BSR included for padding.