# US 9,521,692 B2 · Method and apparatus for transmitting/receiving data on multiple carriers in 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 9,521,692 B2 - Document ID: US9521692B2 - Status: Granted - Kind: B2 - Application number: 14/523,238 - Filed: 2014-10-24 - Published: 2015-02-12 - Granted: 2016-12-13 - Earliest claimed: 2012-02-06 - Assignees: Samsung Electronics Co., Ltd. - Applicants: Samsung Electronics Co., Ltd. - Inventors: Soenghun Kim; Sangbum Kim; Jaehyuk Jang; Kyeongin Jeong; Jongsoo Choi - Web page: https://patentgrep.com/patent/US9521692B2 ## CPC - H04W 72/0446: Resources in time domain, e.g. slots or frames - H04L 1/1861: {Physical mapping arrangements (for ACK signaling see also H04L5/0053)} - H04W 8/06: Registration at serving network Location Register, VLR or user mobility server - H04W 24/08: Testing, {supervising or monitoring} using real traffic - H04W 56/0045: {compensating for timing error by altering transmission time} - H04W 72/20: Control channels or signalling for resource management - H04W 72/21: in the uplink direction of a wireless link, i.e. towards the network - H04W 74/0833: Random access procedures, e.g. with 4-step access - H04W 76/27: Transitions between radio resource control [RRC] states - H04W 36/0077: {of access information of target access point} - H04W 36/324: {by mobility data, e.g. speed data} - H04W 88/08: Access point devices - 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 data transmission method and an apparatus to communicate data on multiple carriers in the mobile communication system are provided. A random access method of a terminal in a mobile communication system including primary and secondary cells operating on multiple carriers according to the present invention includes communicating data after random access in the primary cell, receiving, when the random access is triggered in the secondary cell, information for use in the secondary cell random access from the primary cell, transmitting a preamble in the secondary cell based on the received information, monitoring the primary cell to receive a Random Access Response for the secondary cell, and applying, when the Random Access Response for the secondary cell is received, the information carried in the Random Access Response to the secondary cell in which the preamble has been transmitted. ## Claims ### Claim 1 A random access method of a terminal in a mobile communication system supporting carrier aggregation, the method comprising: transmitting, on a primary cell, a first random access preamble; receiving, on the primary cell, a first control message for a first random access response of the first random access preamble; transmitting, on the primary cell, a first physical uplink shared channel (PUSCH) according to a first uplink grant included in the first random access response; transmitting, on a secondary cell, a second random access preamble; receiving, on the primary cell, a second control message for a second random access response of the second random access preamble; and transmitting, on the secondary cell, a second PUSCH according to a second uplink grant included in the second random access response. ### Claim 2 (depends on 1) The method of claim 1, further comprising: receiving system information including information associated with the primary cell or the secondary cell. ### Claim 3 (depends on 2) The method of claim 2, wherein the system information includes a duration of a random access response window for the primary cell or the secondary cell, and a maximum number of preamble transmissions for the primary cell. ### Claim 4 (depends on 1) The method of claim 1, further comprising: receiving a higher layer message including a maximum number of preamble transmissions for the secondary cell, random access transmission resource information for the secondary cell, and a maximum number of transmissions for uplink hybrid automatic repeat request (HARQ) for the secondary cell. ### Claim 5 (depends on 1) The method of claim 1, wherein the receiving of the second control message for the second random access response comprises: monitoring a control channel of the primary cell to receive the second random access response identified by a random access radio network temporary identifier (RA-RNTI). ### Claim 6 (depends on 1) The method of claim 1, wherein the receiving of the second control message for the second random access response comprises: monitoring a control channel of the primary cell to receive the second random access response based on random access response window size information included in system information transmitted from the primary cell. ### Claim 7 (depends on 1) The method of claim 1, wherein the receiving of the second control message for the second random access response comprises: determining that the second random access response is received if the second random access response contains a random access preamble identifier corresponding to the transmitted second random access preamble. ### Claim 8 (depends on 1) The method of claim 1, wherein the second random access response includes timing advance command information for the secondary cell. ### Claim 9 A terminal for performing a random access in a mobile communication system supporting carrier aggregation, the terminal comprising: a transceiver configured to transmit and receive a signal; and a controller configured to: transmit, on a primary cell, a first random access preamble, receive, on the primary cell, a first control message for a first random access response of the first random access preamble, transmit, on the primary cell, a first physical uplink shared channel (PUSCH) according to a first uplink grant included in the first random access response, transmit, on a secondary cell, a second random access preamble, receive, on a primary cell, a second control message for a second random access response of the second random access preamble, and transmit, on the secondary cell, a second PUSCH according to a second uplink grant included in the second random access response. ### Claim 10 (depends on 9) The terminal of claim 9, wherein the controller is further configured to receive system information including information associated with the primary cell or the secondary cell. ### Claim 11 (depends on 10) The terminal of claim 10, wherein the system information includes a duration of a random access response window for the primary cell or the secondary cell, and a maximum number of preamble transmissions for the primary cell. ### Claim 12 (depends on 9) The terminal of claim 9, wherein the controller is further configured to receive a higher layer message including a maximum number of preamble transmissions for the secondary cell, random access transmission resource information for the secondary cell, and a maximum number of transmissions for uplink hybrid automatic repeat request (HARQ) for the secondary cell. ### Claim 13 (depends on 9) The terminal of claim 9, wherein the controller is further configured to monitor a control channel of the primary cell to receive the second random access response identified by a random access radio network temporary identifier (RA-RNTI). ### Claim 14 (depends on 9) The terminal of claim 9, wherein the controller is further configured to monitor a control channel of the primary cell to receive the second random access response based on random access response window size information included in system information transmitted from the primary cell. ### Claim 15 (depends on 9) The terminal of claim 9, wherein the controller is further configured to determine that the second random access response is received if the second random access response contains a random access preamble identifier corresponding to the transmitted second random access preamble. ### Claim 16 (depends on 9) The terminal of claim 9, wherein the second random access response includes timing advance command information for the secondary cell. ### Claim 17 A base station for supporting a random access in a mobile communication system supporting carrier aggregation, the base station comprising: a transceiver configured to transmit and receive a signal; and a controller configured to: receive, on a primary cell, a first random access preamble; transmit, on the primary cell, a first control message for a first random access response of the first random access preamble; receive, on the primary cell, a first physical uplink shared channel (PUSCH) according to a first uplink grant included in the first random access response; receive, on a secondary cell, a second random access preamble from a terminal, transmit, on a primary cell, a second control message for a second random access response of the second random access preamble to the terminal, and receive, on the secondary cell, a second PUSCH according to a second uplink grant included in the second random access response. ### Claim 18 (depends on 17) The base station of claim 17, wherein the controller is further configured to transmit system information including information associated with the primary cell or the secondary cell. ### Claim 19 (depends on 18) The base station of claim 18, wherein the system information includes a duration of a random access response window for the primary cell or the secondary cell, and a maximum number of preamble transmissions for the primary cell. ### Claim 20 (depends on 17) The base station of claim 17, wherein the controller is further configured to transmit a higher layer message including a maximum number of preamble transmissions for the secondary cell, random access transmission resource information for the secondary cell, and a maximum number of transmissions for uplink hybrid automatic repeat request (HARQ) for the secondary cell, wherein a control channel of the primary cell is monitored by the terminal to receive the second random access response identified by a random access radio network temporary identifier (RA-RNTI), wherein a control channel of the primary cell is monitored by the terminal to receive the second random access response based on random access response window size information included in system information transmitted from the primary cell, wherein the terminal determines that the second random access response is received if the second random access response contains a random access preamble identifier corresponding to the transmitted second random access preamble, and wherein the second random access response includes timing advance command information for the secondary cell. ### Claim 21 A random access support method of a base station in a mobile communication system supporting carrier aggregation, the method comprising: receiving, on a primary cell, a first random access preamble; transmitting, on the primary cell, a first control message for a first random access response of the first random access preamble; receiving, on the primary cell, a first physical uplink shared channel (PUSCH) according to a first uplink grant included in the first random access response; receiving, on a secondary cell, a second random access preamble from a terminal; transmitting, on a primary cell, a second control message for a second random access response of the second random access preamble to the terminal; and receiving, on the secondary cell, a second PUSCH according to a second uplink grant included in the second random access response. ### Claim 22 (depends on 21) The method of claim 21, further comprising: transmitting system information including information associated with the primary cell or the secondary cell. ### Claim 23 (depends on 22) The method of claim 22, wherein the system information includes a duration of random access response window for the primary cell or the secondary cell, a maximum number of preamble transmissions for the primary cell. ### Claim 24 (depends on 22) The method of claim 22, further comprising: transmitting a higher layer message includes a maximum number of preamble transmissions for the secondary cell, random access transmission resource information for the secondary cell, and a maximum number of transmissions for uplink hybrid automatic repeat request (HARQ) for the secondary cell. ### Claim 25 (depends on 22) The method of claim 22, wherein a control channel of the primary cell is monitored by the terminal to receive the second random access response identified by a random access radio network temporary identifier(RA-RNTI). ### Claim 26 (depends on 22) The method of claim 22, wherein a control channel of the primary cell is monitored by the terminal to receive the second random access response using random access response window size information included in system information transmitted from the primary cell. ### Claim 27 (depends on 22) The method of claim 22, wherein it is determined by the terminal that the second random access response is received if the second random access response contains a random access preamble identifier corresponding to the transmitted second random access preamble. ### Claim 28 (depends on 22) The method of claim 22, wherein the second random access response includes timing advance command information for the secondary cell.