# US 12,004,253 B2 · Method and apparatus for segmenting radio resource control message in next-generation mobile communication system > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,004,253 B2 - Document ID: US12004253B2 - Status: Granted - Kind: B2 - Application number: 17/662,541 - Filed: 2022-05-09 - Published: 2022-08-18 - Granted: 2024-06-04 - Earliest claimed: 2018-12-17 - Assignees: Samsung Electronics Co., Ltd. - Applicants: Samsung Electronics Co., Ltd. - Inventors: Donggun Kim; Soenghun Kim; Himke Van Der Velde - Web page: https://patentgrep.com/patent/US12004253B2 ## CPC - H04W 76/27: Transitions between radio resource control [RRC] states - H04L 47/36: by determining packet size, e.g. maximum transfer unit [MTU] - H04L 47/43: Assembling or disassembling of packets, e.g. segmentation and reassembly [SAR] - H04L 69/166: IP fragmentation; TCP segmentation - H04L 69/22: Parsing or analysis of headers - H04B 7/0413: MIMO systems - H04L 69/321: Interlayer communication protocols or service data unit [SDU] definitions; Interfaces between layers - 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) - H04B: TRANSMISSION ## Abstract The present disclosure relates to 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). The present disclosure relates to a method of segmenting data by a transmitting side in a mobile communication system. The method includes: determining whether a size of a RRC (radio resource control) message exceeds a maximum PDCP (packet data convergence protocol) SDU (service data unit) size; when the size of the RRC message exceeds the maximum PDCP SDU size, performing a segmentation of the RRC message into a plurality of segments in a RRC layer; and transmitting, to a base station (BS), the plurality of segments of the RRC message. ## Claims ### Claim 1 A method performed by a user equipment (UE), the method comprising: determining whether a size of a UE capability information message exceeds a maximum packet data convergence protocol (PDCP) service data unit (SDU) size; when the size of the UE capability information message exceeds the maximum PDCP SDU size, performing a segmentation of the UE capability information message into a plurality of segments in a radio resource control (RRC) layer; and transmitting, to a base station (BS), messages for transmitting the plurality of segments of the UE capability information message, wherein each of the messages includes information on a segment number and information for a segment type. ### Claim 2 (depends on 1) The method of claim 1, further comprising: receiving, from the BS via a RRC signaling, a UE capability enquiry message including an indicator indicating that the segmentation of the UE capability information message is allowed, wherein the segmentation of the UE capability information message is performed based on the indicator. ### Claim 3 (depends on 1) The method of claim 1, further comprising: setting the segment number for a first segment of the plurality of segments to 0; and incrementing the segment number for each subsequent segment of the plurality of segments. ### Claim 4 (depends on 1) The method of claim 1, wherein the information for the segment type indicates whether a segment is a last segment of the plurality of segments or not. ### Claim 5 (depends on 1) The method of claim 1, wherein the messages for transmitting the plurality of segments of the UE capability information message are transmitted by transmitting to lower layers based on the segment number. ### Claim 6 A user equipment (UE), the UE comprising: a transceiver; and at least one processor coupled with the transceiver, wherein the at least one processor configured to: determine whether a size of a UE capability information message exceeds a maximum packet data convergence protocol (PDCP) service data unit (SDU) size; when the size of the UE capability information message exceeds the maximum PDCP SDU size, perform a segmentation of the UE capability information message into a plurality of segments in a radio resource control (RRC) layer; and transmit, to a base station (BS), messages for transmitting the plurality of segments of the UE capability information message, wherein each of the messages includes information on a segment number and information for a segment type. ### Claim 7 (depends on 6) The UE of claim 6, wherein the at least one processor further configured to: receive, from the BS via a RRC signaling, a UE capability enquiry message including an indicator indicating that the segmentation of the UE capability information message is allowed, wherein the segmentation of the UE capability information message is performed based on the indicator. ### Claim 8 (depends on 6) The UE of claim 6, wherein the at least one processor further configured to: set the segment number for a first segment of the plurality of segments to 0; and incrementing the segment number for each subsequent segment of the plurality of segments. ### Claim 9 (depends on 6) The UE of claim 6, wherein the information for the segment type indicates whether a segment is a last segment of the plurality of segments or not. ### Claim 10 (depends on 6) The UE of claim 6, wherein the messages for transmitting the plurality of segments of the UE capability information message are transmitted by transmitting to lower layers based on the segment number. ### Claim 11 A method performed by a base station (BS), the method comprising: receiving, from a user equipment (UE), messages for transmitting a plurality of segments of a UE capability information message, wherein a segmentation of the UE capability information message is performed in a radio resource control (RRC) layer when a size of the UE capability information message exceeds a maximum packet data convergence protocol (PDCP) service data unit (SDU) size, wherein each of the messages includes information on a segment number and information for a segment type. ### Claim 12 (depends on 11) The method of claim 11, further comprising: transmitting, to the UE via a RRC signaling, a UE capability enquiry message including an indicator indicating that the segmentation of the UE capability information message is allowed, wherein the segmentation of the UE capability information message is performed based on the indicator. ### Claim 13 (depends on 11) The method of claim 11, wherein the information for the segment type indicates whether a segment is a last segment of the plurality of segments or not. ### Claim 14 (depends on 11) The method of claim 11, wherein the messages for transmitting the plurality of segments of the UE capability information message are transmitted by transmitting to lower layers of the UE based on the segment number.