# US 2016/0366000 A1 · Reconfiguration of Active Component Carrier Set in Multi-Carrier Wireless Systems > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2016/0366000 A1 - Document ID: US20160366000A1 - Status: Published application - Kind: A1 - Application number: 15/249,125 - Filed: 2016-08-26 - Published: 2016-12-15 - Earliest claimed: 2009-09-30 - Assignees: Optis Wireless Technology, LLC - Applicants: Optis Wireless Technology, LLC - Inventors: Ghyslain Pelletier; Lars Sundstrom - Web page: https://patentgrep.com/patent/US20160366000A1 ## CPC - H04L 27/2605: {Symbol extensions, e.g. Zero Tail, Unique Word [UW]} - H04L 5/001: {the frequencies being arranged in component carriers} - H04L 5/0037: {Inter-user or inter-terminal allocation} - H04L 5/0053: {Allocation of signalling, i.e. of overhead other than pilot signals} - H04L 5/0096: {Indication of changes in allocation} - H04W 24/02: Arrangements for optimising operational condition - H04W 76/28: Discontinuous transmission [DTX]; Discontinuous reception [DRX] - H04L 5/0064: {Rate requirement of the data, e.g. scalable bandwidth, data priority} - H04L 5/0087: {when data requirements change} - H04L: TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION (arrangements common to telegraphic and telephonic communication H04M) - H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72) ## Abstract In a multi-carrier wireless system, potential problems from reconfiguring mobile station resources to accommodate changes in component-carrier configuration are mitigated by inserting a guard period each time the configuration of component carriers changes, so that transceiver reconfiguration can be carried out without interfering with ongoing transmission. A base station is configured to transmit data to a mobile station according to a first configuration of two or more component carriers, to determine that a change of configuration to a second component-carrier configuration is required, and to signal the change of configuration to the mobile station, using the first configuration of component carriers. The base station then refrains from transmitting data to the mobile station during a pre-determined guard interval of at least one transmission-time interval subsequent to the signaling of the change of configuration. After the guard interval, data is transmitted to the mobile station according to the second component-carrier configuration. ## Claims ### Claim 1 A wireless mobile station configured for multi-carrier operation, the wireless mobile station comprising a control circuit configured to: receive, using a first component-carrier configuration, signaling information indicating that a change of configuration to a second component-carrier configuration is pending; selectively activate, de-activate, or reconfigure one or more transceiver components during a pre-determined guard interval of at least one transmission-time interval, based on the signaling information; and receive second data from the base station according to the second component-carrier configuration, after the guard interval. ### Claim 2 (depends on 1) The wireless mobile station of claim 1, wherein the pre-determined guard interval comprises at least one subframe. ### Claim 3 (depends on 1) The wireless mobile station of claim 1, wherein the pre-determined guard interval immediately follows the transmission-time interval in which the signaling information is received. ### Claim 4 (depends on 1) The wireless mobile station of claim 1, wherein the guard interval is delayed by one or more transmission-time intervals following the transmission-time interval in which the change of configuration is signaled, and wherein the control circuit is configured to continue receiving the first data according to the first configuration for at least one transmission-time interval subsequent to receiving the signaling information and prior to the pre-determined guard interval. ### Claim 5 (depends on 1) The wireless mobile station of claim 1, wherein the change of configuration comprises a change in the number of component carriers to be used for data transmission or a change to a set of active component carriers, with the number of active component carriers remaining the same. ### Claim 6 (depends on 1) The wireless mobile station of claim 1, wherein the control circuit is further configured to delay an automatic-repeat-request process corresponding to the mobile station by a number of transmission-time intervals equal to the pre-determined guard interval. ### Claim 7 (depends on 1) The wireless mobile station of claim 1, wherein the control circuit is further configured to determine that an outgoing data transmission is scheduled for the guard interval and to defer the data transmission until after the pre-determined guard interval. ### Claim 8 (depends on 7) The wireless mobile station of claim 7, wherein deferring the data transmission until after the pre-determined guard interval comprises performing a HARQ retransmission of the outgoing data transmission. ### Claim 9 A method in a wireless mobile station configured for multi-carrier operation, the method comprising: receiving, using a first component-carrier configuration, signaling information indicating that a change of configuration to a second component-carrier configuration is pending; selectively activating, de-activating, or reconfiguring one or more transceiver components during a pre-determined guard interval of at least one transmission-time interval, based on the signaling information; and receiving second data from the base station according to the second component-carrier configuration, after the guard interval. ### Claim 10 (depends on 9) The method of claim 9, wherein the pre-determined guard interval comprises at least one subframe. ### Claim 11 (depends on 9) The method of claim 9, wherein the pre-determined guard interval immediately follows the transmission-time interval in which the signaling information is received. ### Claim 12 (depends on 9) The method of claim 9, wherein the guard interval is delayed by one or more transmission-time intervals following the transmission-time interval in which the change of configuration is signaled, and wherein the method further comprises receiving the first data according to the first configuration for at least one transmission-time interval subsequent to receiving the signaling information and prior to the pre-determined guard interval. ### Claim 13 (depends on 9) The method of claim 9, wherein the change of configuration comprises a change in the number of component carriers to be used for data transmission or a change to a set of active component carriers, with the number of active component carriers remaining the same. ### Claim 14 (depends on 9) The method of claim 9, further comprising delaying an automatic-repeat-request process corresponding to the mobile station by a number of transmission-time intervals equal to the pre-determined guard interval. ### Claim 15 (depends on 9) The method of claim 9, further comprising determining that an outgoing data transmission is scheduled for the guard interval and deferring the data transmission until after the pre-determined guard interval. ### Claim 16 (depends on 15) The method of claim 15, wherein deferring the data transmission until after the pre-determined guard interval comprises performing a HARQ retransmission of the outgoing data transmission. ### Claim 17 A method in a base station for controlling data transmission in a wireless communications network configured for multi-carrier operation, the method comprising: signaling, to a mobile station using a first component-carrier configuration, a change of configuration from the first configuration to a second component-carrier configuration; refraining from transmitting data to the mobile station during a pre-determined guard interval of at least one transmission-time interval subsequent to the signaling of the change of configuration; and transmitting second data to the mobile station according to the second component-carrier configuration, after the guard interval. ### Claim 18 (depends on 17) The method of claim 17, wherein the pre-determined guard interval comprises at least one subframe. ### Claim 19 (depends on 17) The method of claim 17, wherein the pre-determined guard interval immediately follows the transmission-time interval in which the change of configuration is signaled. ### Claim 20 (depends on 17) The method of claim 17, wherein the guard interval is delayed by one or more transmission-time intervals following the transmission-time interval in which the change of configuration is signaled, and wherein the method further comprises continuing transmission of the first data according to the first configuration for at least one transmission-time interval subsequent to the signaling of the change of configuration and prior to the pre-determined guard interval.