Apparatus and method for uplink data report and control channel synchronization in wireless communication system
A pre-5 th -Generation (5G) or 5G communication system to be provided for supporting higher data rates Beyond 4 th -Generation (4G) communication system, such as long term evolution (LTE). A user equipment (UE) in a wireless communication system is provided. The UE includes a transceiver, and at least one processor coupled to the transceiver and configured to generate a lone truncated buffer status report (BSR) based on a number of padding bits, and transmit the long truncated BSR informing of data volume for at least one logical channel group among logical channel groups having data for transmission, wherein the data volume for the at least one logical channel group is reported following an order that is determined based on a highest priority logical channel in each of the at least one logical channel group.
1. A user equipment (UE) in a wireless communication system, the UE comprising:
a transceiver; and
a processor coupled to the transceiver and configured to:
generate, in case that logical channel groups have data available for transmission and a number of padding bits is larger than a size of a short buffer status report (BSR) plus a subheader associated with the short BSR and is smaller than a size of a long BSR plus a subheader associated with the long BSR, a long truncated BSR informing data volume for part of the logical channel groups, and
transmit the long truncated BSR to a base station,
wherein the long truncated BSR includes the data volume for the part of the logical channel groups following a decreasing order of a highest priority logical channel among a plurality of logical channels in each of the logical channel groups, and
wherein the decreasing order of the highest priority logical channel among the plurality of logical channels in each of the logical channel groups is determined based on a logical channel having a highest priority, regardless of whether the logical channel has data, in each of the logical channel groups.
2. The UE of claim 1 , wherein the long truncated BSR comprises:
information indicating the logical channel groups having data available for transmission, and
information regarding the data volume for the part of the logical channel groups.
3. The UE of claim 1 , wherein the long truncated BSR includes the data volume for the part of the logical channel groups following the decreasing order of the highest priority logical channel among the plurality of logical channels in each of the logical channel groups and, in case of same priority, an increasing order of logical channel group identifier.
4. The UE of claim 1 , wherein the long truncated BSR is transmitted as a padding BSR.
5. The UE of claim 1 ,
wherein the short BSR is a BSR that includes an identifier of a single logical channel and information regarding data volume for the single logical channel, and
wherein the long BSR is a BSR that includes information regarding data volume for each of the logical channel groups having data available for transmission.
6. The UE of claim 5 , wherein the long truncated BSR is classified into a periodic BSR, a regular BSR, and a padding BSR depending on a time during which the data is transmitted and an amount of information.
7. A base station in a wireless communication system, the base station comprising:
a transceiver; and
a processor coupled to the transceiver and configured to receive, from a user equipment (UE), a long truncated buffer status report (BSR) for informing data volume for part of logical channel groups having data available for transmission,
wherein the long truncated BSR is determined in case that the logical channel groups have data available for transmission and a number of padding bits is larger than a size of a short BSR plus a subheader associated with the short BSR and is smaller than a size of a long BSR plus a subheader associated with the long BSR,
wherein the long truncated BSR includes the data volume for the part of the logical channel groups following a decreasing order of a highest priority logical channel among a plurality of logical channels in each of the logical channel groups, and
wherein the decreasing order of the highest priority logical channel among the plurality of logical channels in each of the logical channel groups is determined based on a logical channel having a highest priority, regardless of whether the logical channel has data, in each of the logical channel groups.
8. The base station of claim 7 , wherein the long truncated BSR comprises:
information indicating the logical channel groups having data available for transmission, and
information regarding the data volume for the part of the logical channel groups.
9. The base station of claim 7 , wherein the long truncated BSR includes the data volume for the part of the logical channel groups following the decreasing order of the highest priority logical channel among the plurality of logical channels in each of the logical channel groups and, in case of same priority, an increasing order of logical channel group identifier.
10. The base station of claim 7 , wherein the long truncated BSR is transmitted as a padding BSR.
11. The base station of claim 7 ,
wherein the short BSR is a BSR that includes an identifier of a single logical channel and information regarding data volume for the single logical channel, and
wherein the long BSR is a BSR that includes information regarding data volume for each of the logical channel groups having data available for transmission.