# US 12,225,407 B2 · Apparatus and method for uplink data report and control channel synchronization in wireless communication system > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,225,407 B2 - Document ID: US12225407B2 - Status: Granted - Kind: B2 - Application number: 18/425,654 - Filed: 2024-01-29 - Published: 2024-05-23 - Granted: 2025-02-11 - Earliest claimed: 2018-08-09 - Assignees: Samsung Electronics Co., Ltd. - Applicants: Samsung Electronics Co., Ltd. - Inventors: Sangkyu Baek; Soenghun Kim; Namhoon Kim; Myunghwan Kim; Hyoungmin Kim; Sungnam Hong - Web page: https://patentgrep.com/patent/US12225407B2 ## CPC - H04W 28/0278: {using buffer status reports (dynamic wireless traffic scheduling definition H04W72/12)} - H04L 1/1812: Hybrid protocols; Hybrid automatic repeat request [HARQ] - H04W 56/0045: {compensating for timing error by altering transmission time} - H04W 72/21: in the uplink direction of a wireless link, i.e. towards the network - H04W 72/56: based on priority criteria - H04W 76/11: Allocation or use of connection identifiers - H04W 76/27: Transitions between radio resource control [RRC] states - H04W 76/38: triggered by timers - H04W 72/569: {of the traffic information} - H04W 74/0833: Random access procedures, e.g. with 4-step access - H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72) - H04L: TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION (arrangements common to telegraphic and telephonic communication H04M) ## Abstract A pre-5th-Generation (5G) or 5G communication system to be provided for supporting higher data rates Beyond 4th-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. ## Claims ### Claim 1 A user equipment (UE) in a wireless communication system, the UE comprising: a transceiver; and a controller coupled with the transceiver, and configured to: identify that a padding buffer status report (BSR) is triggered for padding bits, identify that a number of the padding bits is larger than a size of a short BSR medium access control (MAC) control element (CE) plus a first subheader of the short BSR MAC CE and the number of the padding bits is smaller than a size of a long BSR MAC CE plus a second subheader of the long BSR MAC CE, identify that more than one logical channel group has data available for transmission, and transmit, to a base station, a long truncated BSR MAC CE for at least one logical channel group among the more than one logical channel group, in case that the number of the padding bits is larger than the size of the short BSR MAC CE plus the first subheader of the short BSR MAC CE and the number of the padding bits is smaller than the size of the long BSR MAC CE plus the second subheader of the long BSR MAC CE, wherein the at least one logical channel group is identified by following a decreasing order of a highest priority logical channel in each of the more than one logical channel group and an increasing order of logical channel group identifier in case of an equal priority. ### Claim 2 (depends on 1) The UE of claim 1, wherein the at least one logical channel group is identified regardless of whether the highest priority logical channel in each of the more than one logical channel group has data available for transmission or not. ### Claim 3 (depends on 1) The UE of claim 1, wherein the long truncated BSR MAC CE comprises: logical channel group information for indicating the at least one logical channel group having data available; and buffer size information for identifying an amount of data available for the at least one logical channel group. ### Claim 4 A base station in a wireless communication system, the base station comprising: a transceiver; and a controller coupled with the transceiver, and configured to: receive, from a user equipment (UE), a long truncated buffer status report (BSR) medium access control (MAC) control element (CE) for at least one logical channel group among more than one logical channel group having data available for transmission, wherein the long truncated BSR MAC CE is received, in case that a number of padding bits is larger than a size of a short BSR MAC CE plus a first subheader of the short BSR MAC CE, and the number of padding bits is smaller than a size of a long BSR MAC CE plus a second subheader of the long BSR MAC CE, and wherein the at least one logical channel group is included in the long truncated BSR MAC CE by following a decreasing order of a highest priority logical channel in each of the more than one logical channel group and an increasing order of logical channel group identifier in case of an equal priority. ### Claim 5 (depends on 4) The base station of claim 4, wherein the at least one logical channel group is included in the long truncated BSR MAC CE regardless of whether the highest priority logical channel in each of the more than one logical channel group has data available for transmission or not. ### Claim 6 (depends on 4) The base station of claim 4, wherein the long truncated BSR MAC CE comprises: logical channel group information for indicating the at least one logical channel group having data available; and buffer size information for identifying an amount of data available for the at least one logical channel group. ### Claim 7 A method performed by a user equipment (UE) in a wireless communication system, the method comprising: identifying that a padding buffer status report (BSR) is triggered for padding bits; identifying that a number of the padding bits is larger than a size of a short BSR medium access control (MAC) control element (CE) plus a first subheader of the short BSR MAC CE and the number of the padding bits is smaller than a size of a long BSR MAC CE plus a second subheader of the long BSR MAC CE; identifying that more than one logical channel group has data available for transmission; and transmitting, to a base station, a long truncated BSR MAC CE for at least one logical channel group among the more than one logical channel group, in case that the number of the padding bits is larger than the size of the short BSR MAC CE plus the first subheader of the short BSR MAC CE and the number of the padding bits is smaller than the size of the long BSR MAC CE plus the second subheader of the long BSR MAC CE, wherein the at least one logical channel group is identified by following a decreasing order of a highest priority logical channel in each of the more than one logical channel group and an increasing order of logical channel group identifier in case of an equal priority. ### Claim 8 (depends on 7) The method of claim 7, wherein the at least one logical channel group is identified regardless of whether the highest priority logical channel in each of the more than one logical channel group has data available for transmission or not. ### Claim 9 (depends on 7) The method of claim 7, wherein the long truncated BSR MAC CE comprises: logical channel group information for indicating the at least one logical channel group having data available; and buffer size information for identifying an amount of data available for the at least one logical channel group. ### Claim 10 A method performed by a base station in a wireless communication system, the method comprising: receiving, from a user equipment (UE), a long truncated buffer status report (BSR) medium access control (MAC) control element (CE) for at least one logical channel group among more than one logical channel group having data available for transmission, wherein the long truncated BSR MAC CE is received, in case that a number of padding bits is larger than a size of a short BSR MAC CE plus a first subheader of the short BSR MAC CE, and the number of padding bits is smaller than a size of a long BSR MAC CE plus a second subheader of the long BSR MAC CE, and wherein the at least one logical channel group is included in the long truncated BSR MAC CE by following a decreasing order of a highest priority logical channel in each of the more than one logical channel group and an increasing order of logical channel group identifier in case of an equal priority. ### Claim 11 (depends on 10) The method of claim 10, wherein the at least one logical channel group is included in the long truncated BSR MAC CE regardless of whether the highest priority logical channel in each of the more than one logical channel group has data available for transmission or not. ### Claim 12 (depends on 10) The method of claim 10, wherein the long truncated BSR MAC CE comprises: logical channel group information for indicating the at least one logical channel group having data available; and buffer size information for identifying an amount of data available for the at least one logical channel group.