# US 9,439,111 B2 · Method, device and system for cell handover in telecommunication system supporting carrier aggregation > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 9,439,111 B2 - Document ID: US9439111B2 - Status: Granted - Kind: B2 - Application number: 14/340,163 - Filed: 2014-07-24 - Published: 2014-11-13 - Granted: 2016-09-06 - Earliest claimed: 2010-07-27 - Assignees: Sony Corporation - Applicants: Sony Corporation - Inventors: Yuxin Wei - Web page: https://patentgrep.com/patent/US9439111B2 ## CPC - H04W 36/0094: {Definition of hand-off measurement parameters} - H04L 5/001: {the frequencies being arranged in component carriers} - H04W 36/0033: {with transfer of context information} - H04W 36/00692: {using simultaneous multiple data streams, e.g. cooperative multipoint [CoMP], carrier aggregation [CA] or multiple input multiple output [MIMO] (allocation of physical resources in CoMP or in CA H04L5/0035)} - H04W 36/00833: {Handover statistics} - H04W 36/08: Reselecting an access point - H04L 5/0091: {Signalling for the administration of the divided path, e.g. signalling of configuration information} - H04W 36/00837: {Determination of triggering parameters for hand-off} - 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 method, device and system for a cell handover in a telecommunication system supporting carrier aggregation. The method may include: a Base Station (BS) determines that whether carrier components corresponding to one or more cells to be accessed are in the same frequency band, wherein the one or more cells to be accessed belong to a target BS, and are selected by a terminal which needs to perform the cell handover and is served by the BS; if yes, the BS encapsulates configuration information of all the cells in the one or more cells to be accessed in a handover command for initiating cell handover; otherwise, the BS encapsulates configuration information of one or more cells in the one or more cells to be accessed in the handover command, and sends the handover command to the target BS. ## Claims ### Claim 1 An electronic device, comprising: circuitry including a processor and a memory, and configured to measure performance of one or more measurement objects based on a configuration set by a serving base station of the electronic device to obtain measurement results, the one or more measurement objects corresponding to one or more neighbor cells; compare the measurement results of the measurement objects with performance of one or more serving cells aggregated with a primary cell of the electronic device based on a carrier frequency of the measurement objects; compare the measurement results of the measurement objects with performance of the primary cell of the electronic device based on carrier frequency of the measurement objects; and trigger a measurement report to the serving base station of the measurement results based on the compare performed by the circuitry, wherein the circuitry is further configured to configure a target primary cell based on a radio resource control (RRC) connection reconfiguration message including mobility control information, wherein the target primary cell is on same frequency of current serving cell. ### Claim 2 (depends on 1) The electronic device according to claim 1, wherein the target primary cell identified by a best performance based on the measurement results. ### Claim 3 (depends on 1) The electronic device according to claim 1, wherein the circuitry is further configured to configure one or more target cells to be aggregated with the target primary cell based on the RRC reconfiguration message including mobility control information. ### Claim 4 (depends on 1) The electronic device according to claim 1, wherein the circuitry is further configured to add one or more target cells to be aggregated with a target primary cell based on a RRC connection reconfiguration message not including mobility control information. ### Claim 5 (depends on 1) The electronic device according to claim 1, the circuitry is further configured to transmit the measurement report to the serving base station via a radio interface. ### Claim 6 (depends on 5) The electronic device according to claim 5, wherein the electronic device is a terminal device. ### Claim 7 An electronic device, comprising: circuitry including a processor and a memory, and configured to obtain a measurement report of a terminal device, the measurement report comprising measurement results of one or more measurement objects based on a comparison of the measurement results of the one or more measurement objects with performance of one or more serving cells aggregated with a primary cell of the terminal device based on a carrier frequency of the measurement objects; determine one or more target cells for the terminal device based on the measurement report; generate a handover request message for a target base station, the handover request message comprising information of the one or more target cells based on frequency thereof; and obtain a handover acknowledge message from the target base station and generate a radio resource control (RRC) connection reconfiguration message for reconfiguring radio resource control connection of the terminal device based on the handover acknowledge message, wherein the measurement report further comprises the measurement results of the one or more measurement objects based on a comparison of the measurement results of the measurement objects with performance of the primary cell of the terminal device based on carrier frequency of the one or more measurement objects, and the one or more target cells comprising a target primary cell to replace the primary cell for the terminal device. ### Claim 8 (depends on 7) The electronic device according to claim 7, wherein the RRC connection reconfiguration message includes mobility control information and comprises RRC connection reconfiguration information of a target primary cell, wherein the target primary cell is on a same frequency of a current serving cell. ### Claim 9 (depends on 8) The electronic device according to claim 8, wherein the RRC connection reconfiguration message further comprises RRC connection reconfiguration information of one or more target cells to be aggregated with the target primary cell based on the measurement results and the frequency of the one or more target cells. ### Claim 10 (depends on 7) The electronic device according to claim 7, wherein the circuitry is further configured to generate an RRC connection reconfiguration message not including mobility control information for the terminal device to execute carrier aggregation, the RRC connection reconfiguration message comprising information of one or more target cells to be aggregated with the primary cell based on the measurement results. ### Claim 11 (depends on 7) The electronic device according to claim 7, the circuitry is further configured to receive the measurement report from the terminal device via a radio interface. ### Claim 12 (depends on 11) The electronic device according to claim 11, wherein the electronic device is a base station. ### Claim 13 A method performed in a terminal device, the method comprising: measuring performance of one or more measurement objects based on a configuration set by a serving base station of the terminal device to obtain measurement results, the one or more measurement objects corresponding to one or more neighbor cells; comparing with circuitry the measurement results of the measurement objects with performance of one or more serving cells aggregated with a primary cell of the electronic device based on a carrier frequency of the measurement objects; comparing the measurement results of the measurement objects with performance of the primary cell of the electronic device based on carrier frequency of the measurement objects; and triggering a measurement report to the serving base station of the measurement results based on the comparing, wherein the method further comprises configuring a target primary cell based on a radio resource control (RRC) connection reconfiguration message including mobility control information, wherein the target primary cell is on same frequency of current serving cell. ### Claim 14 A method performed in a base station, the method comprising: obtaining a measurement report of a terminal device, the measurement report comprising measurement results of one or more measurement objects based on a comparison of the measurement results of the one or more measurement objects with performance of one or more serving cells aggregated with a primary cell of the terminal device based on a carrier frequency of the measurement objects; determining one or more target cells for the terminal device based on the measurement report; generating a handover request message for a target base station, the handover request message comprising information of the one or more target cells based on frequency thereof; and obtaining a handover acknowledge message from the target base station and generate a radio resource control (RRC) connection reconfiguration message for reconfiguring radio resource control connection of the terminal device based on the handover acknowledge message, wherein the measurement report further comprises the measurement results of the one or more measurement objects based on a comparison of the measurement results of the measurement objects with performance of the primary cell of the terminal device based on carrier frequency of the one or more measurement objects, and the one or more target cells comprising a target primary cell to replace the primary cell for the terminal device. ### Claim 15 A non-transitory computer readable storage device having instructions stored therein that when executed by processing circuitry perform a method for a terminal device, the method comprising: measuring performance of one or more measurement objects based on configuration by a serving base station of the terminal device to obtain measurement results, the one or more measurement objects corresponding to one or more neighbor cells; comparing the measurement results of the measurement objects with performance of one or more serving cells aggregated with a primary cell of the electronic device based on carrier frequency of the measurement objects; comparing the measurement results of the measurement objects with performance of the primary cell of the electronic device based on carrier frequency of the measurement objects; and triggering a measurement report to the serving base station of the measurement results based on the comparison, wherein the method further comprises configuring a target primary cell based on a radio resource control (RRC) connection reconfiguration message including mobility control information, wherein the target primary cell is on same frequency of current serving cell. ### Claim 16 An electronic device, comprising: circuitry including a processor and a memory, and configured to measure performance of one or more measurement objects based on configuration by a serving base station of the electronic device to obtain measurement results, the one or more measurement objects corresponding to one or more neighbor cells; compare the measurement results of the measurement objects with performance of one or more serving cells aggregated with a primary cell of the electronic device based on carrier frequency of the measurement objects; compare the measurement results of the measurement objects with performance of the primary cell of the electronic device based on carrier frequency of the measurement objects; and trigger a measurement report to the serving base station of the measurement results based on the comparison, wherein the circuitry is further configured to add one or more target cells to be aggregated with the primary cell based on a radio resource control (RRC) connection reconfiguration message not including mobility control information. ### Claim 17 (depends on 16) The electronic device according to claim 16, wherein the circuitry is further configured to configure a target primary cell based on the RRC connection reconfiguration message including mobility control information, wherein the target primary cell is on same frequency of current serving cell. ### Claim 18 (depends on 17) The electronic device according to claim 17, wherein the circuitry is further configured to configure one or more target cells to be aggregated with the target primary cell based on the RRC reconfiguration message including mobility control information. ### Claim 19 (depends on 16) The electronic device according to claim 16, wherein the circuitry is further configured to configure a target primary cell based on the RRC connection reconfiguration message including mobility control information, wherein the target primary cell is of best performance based on the measurement results. ### Claim 20 (depends on 16) The electronic device according to claim 16, the circuitry is further configured to transmit the measurement report to the serving base station via a radio interface. ### Claim 21 (depends on 20) The electronic device according to claim 20, wherein the electronic device is a terminal device.