# US 2018/0027463 A1 · Communication Connection Control Method, and Device > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2018/0027463 A1 - Document ID: US20180027463A1 - Status: Published application - Kind: A1 - Application number: 15/719,806 - Filed: 2017-09-29 - Published: 2018-01-25 - Earliest claimed: 2015-03-31 - Assignees: Huawei Technologies Co., Ltd. - Applicants: Huawei Technologies Co., Ltd. - Inventors: Lei Chen; Xiaotong Wang - Web page: https://patentgrep.com/patent/US20180027463A1 ## CPC - H04W 36/08: Reselecting an access point - H04W 36/0061: {of neighbour cell information} - H04W 36/362: {Conditional handover} - H04W 48/16: Discovering, processing access restriction or access information - H04W 84/12: WLAN [Wireless Local Area Networks] - H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72) ## Abstract A communication connection control method and a device, with the device configured to, when the device finds that communication service quality provided by an optimal wireless fidelity (Wi-Fi) access point is better than communication service quality provided by a currently connected Wi-Fi access point, the device automatically disconnects from the currently connected Wi-Fi access point, and initiates a connection request to the optimal Wi-Fi access point. ## Claims ### Claim 1 A communication connection control method, comprising: determining, by a device having a Wireless Fidelity (Wi-Fi) function, an optimal Wi-Fi access point in at least one optional Wi-Fi access point found by searching; determining, by the device, according to information about the optimal Wi-Fi access point and information about a currently connected first Wi-Fi access point, that the optimal Wi-Fi access point meets a switch condition; and disconnecting, by the device, from the first Wi-Fi access point, and initiating a connection request to the optimal Wi-Fi access point. ### Claim 2 (depends on 1) The control method according to claim 1, further comprising performing, before the determining, by the device, an optimal Wi-Fi access point in at least one optional Wi-Fi access point found by searching: determining, by the device, that a trigger event of switching a Wi-Fi access point occurs, wherein the trigger event of switching the Wi-Fi access point comprises at one of that the device detects that signal strength of the first Wi-Fi access point decreases, that the device learns that a location of the device changes, or that the device detects that accessing a network through the first Wi-Fi access point fails or an access speed decreases. ### Claim 3 (depends on 1) The control method according to claim 1, wherein the determining, by the device according to information about the optimal Wi-Fi access point and information about a currently connected first Wi-Fi access point, that the optimal Wi-Fi access point meets a switch condition comprises performing, at least one of: determining, by the device, when the information is an identifier, that an identifier of the optimal Wi-Fi access point and an identifier of the currently connected first Wi-Fi access point are different; or determining, by the device, when the information is a quality parameter, and according to a quality parameter of the optimal Wi-Fi access point and a quality parameter of the first Wi-Fi access point, that communication service quality provided by the optimal Wi-Fi access point is better than communication service quality provided by the first Wi-Fi access point, wherein the quality parameter is at least one of a priority of the Wi-Fi access point, signal strength of the Wi-Fi access point, network bandwidth of the Wi-Fi access point, an access speed of the Wi-Fi access point, or a distance between a location of the Wi-Fi access point and the device. ### Claim 4 (depends on 1) The control method according to claim 1, further comprising performing, before the determining, by the device, the optimal Wi-Fi access point in the at least one optional Wi-Fi access point found by searching: determining, by the device according to historical information stored in the device, and in all Wi-Fi access points found by searching, that at least one Wi-Fi access point, whose identifier exists in the historical information, is the at least one optional Wi-Fi access point, wherein the historical information comprises at least an identifier of second Wi-Fi access point, and wherein the second Wi-Fi access point is a Wi-Fi access point to which the device successfully connects. ### Claim 5 (depends on 4) The control method according to claim 4, wherein the historical information further comprises a time corresponding to each second Wi-Fi access point identifier, wherein the time is a time at which the device successfully connects to the second Wi-Fi access point; and wherein the determining, by the device, an optimal Wi-Fi access point in at least one optional Wi-Fi access point found by searching comprises: querying, by the device, the historical information according to an identifier of each optional Wi-Fi access point to obtain a time corresponding to the identifier of each optional Wi-Fi access point; and selecting, by the device in the at least one optional Wi-Fi access point, an optional Wi-Fi access point, whose identifier is corresponding to a time point that is closest to a current moment, as the optimal Wi-Fi access point. ### Claim 6 (depends on 1) The control method according to claim 1, wherein the determining, by the device, an optimal Wi-Fi access point in at least one optional Wi-Fi access point found by searching comprises: determining, by the device according to signal strength of each optional Wi-Fi access point, that a Wi-Fi access point having highest signal strength is the optimal Wi-Fi access point. ### Claim 7 (depends on 1) The control method according to claim 1, wherein the determining, by the device, an optimal Wi-Fi access point in at least one optional Wi-Fi access point found by searching comprises: selecting, by the device according to a location of each optional Wi-Fi access point and the location of the device, a Wi-Fi access point closest to the device as the optimal Wi-Fi access point, wherein a location of any Wi-Fi access point found by searching by the device is obtained by the device from the Wi-Fi access point or a remote server. ### Claim 8 (depends on 1) The control method according to claim 1, wherein the determining, by the device, the optimal Wi-Fi access point in at least one optional Wi-Fi access point found by searching comprises: selecting, by the device according to network bandwidth of each optional Wi-Fi access point and in the at least one optional Wi-Fi access point found by searching, a Wi-Fi access point having largest network bandwidth as the optimal Wi-Fi access point, wherein network bandwidth of any Wi-Fi access point found by searching by the device is sent by the Wi-Fi access point to the device, or is learned by the device by detection on the Wi-Fi access point. ### Claim 9 (depends on 1) The control method according to claim 1, wherein the determining, by the device, the optimal Wi-Fi access point in at least one optional Wi-Fi access point found by searching comprises: determining, by the device according to an access speed of each optional Wi-Fi access point, that an optional Wi-Fi access point having a highest access speed is the optimal Wi-Fi access point, wherein an access speed of any Wi-Fi access point found by searching by the device is at least one of sent by the Wi-Fi access point to the device, or is learned by the device by detection on the Wi-Fi access point. ### Claim 10 A device having a Wireless Fidelity (Wi-Fi) function, the device comprising: a transceiver; a processor; and a non-transitory computer-readable storage medium storing a program to be executed by the processor, the program including instructions to: determine an optimal Wi-Fi access point in at least one optional Wi-Fi access point found by searching; and determine, according to information about the optimal Wi-Fi access point and information about a currently connected first Wi-Fi access point, that the optimal Wi-Fi access point meets a switch condition; wherein the transceiver is configured to disconnect from the first Wi-Fi access point, and initiate a connection request to the optimal Wi-Fi access point. ### Claim 11 (depends on 10) The device according to claim 10, wherein the program further includes instructions to determine that a trigger event of switching a Wi-Fi access point occurs; wherein the trigger event of switching a Wi-Fi access point comprises at least one of the device detecting that signal strength of the first Wi-Fi access point decreases, the device learning that a location of the device changes, or the device detecting that accessing a network through the first Wi-Fi access point fails or an access speed decreases. ### Claim 12 (depends on 10) The device according to claim 10, wherein when the information is an identifier, and wherein the program further includes instructions to: determine, according to the information about the optimal Wi-Fi access point and the information about the currently connected first Wi-Fi access point, that the optimal Wi-Fi access point meets the switch condition; and perform at least one of: determine that an identifier of the optimal Wi-Fi access point and an identifier of the currently connected first Wi-Fi access point are different; or determine, according to a quality parameter of the optimal Wi-Fi access point and a quality parameter of the first Wi-Fi access point, and when the information is a quality parameter, that communication service quality provided by the optimal Wi-Fi access point is better than communication service quality provided by the first Wi-Fi access point, wherein the quality parameter is at least one of a priority of the Wi-Fi access point, signal strength of the Wi-Fi access point, network bandwidth of the Wi-Fi access point, an access speed of the Wi-Fi access point, or a distance between a location of the Wi-Fi access point and the device. ### Claim 13 (depends on 10) The device according to claim 10, further comprising a memory, configured to store historical information; wherein the program further includes instructions to determine, according to historical information stored in the memory, and in all Wi-Fi access points found by searching, that at least one Wi-Fi access point, whose identifier exists in the historical information, is the at least one optional Wi-Fi access point, wherein the historical information comprises at least an identifier of second Wi-Fi access point, and wherein the second Wi-Fi access point is a Wi-Fi access point to which the device successfully connects. ### Claim 14 (depends on 10) The device according to claim 10, wherein when the program further includes instructions to determine, according to the information about the optimal Wi-Fi access point and the information about the currently connected first Wi-Fi access point, that the optimal Wi-Fi access point meets the switch condition, the processor is specifically configured to determine, according to signal strength of each optional Wi-Fi access point, that a Wi-Fi access point having highest signal strength is the optimal Wi-Fi access point. ### Claim 15 (depends on 10) The device according to claim 10, wherein the program further includes instructions to: determine, according to the information about the optimal Wi-Fi access point and the information about the currently connected first Wi-Fi access point, that the optimal Wi-Fi access point meets the switch condition; and select, according to a location of each optional Wi-Fi access point and the location of the device, a Wi-Fi access point closest to the device as the optimal Wi-Fi access point, wherein a location of any Wi-Fi access point found by searching by the device is obtained from one of the Wi-Fi access point or a remote server by the transceiver triggered by the processor. ### Claim 16 (depends on 10) The device according to claim 10, wherein the program further includes instructions to: determine, according to the information about the optimal Wi-Fi access point and the information about the currently connected first Wi-Fi access point, that the optimal Wi-Fi access point meets the switch condition; and select, according to network bandwidth of each optional Wi-Fi access point and in the at least one optional Wi-Fi access point found by searching, a Wi-Fi access point having largest network bandwidth as the optimal Wi-Fi access point, wherein network bandwidth of any Wi-Fi access point found by searching by the device is sent by the Wi-Fi access point to the device, or is learned by the device by detection on the Wi-Fi access point. ### Claim 17 (depends on 10) The device according to claim 10, wherein program further includes instructions to: determine, according to the information about the optimal Wi-Fi access point and the information about the currently connected first Wi-Fi access point, that the optimal Wi-Fi access point meets the switch condition, the processor is specifically configured to determine, according to an access speed of each optional Wi-Fi access point, that an optional Wi-Fi access point having a highest access speed is the optimal Wi-Fi access point, wherein an access speed of any Wi-Fi access point found by searching by the device is sent by the Wi-Fi access point to the device, or is learned by the device by detection on the Wi-Fi access point. ### Claim 18 (depends on 13) The device according to claim 13, wherein the historical information further comprises a time corresponding to the identifier of each second Wi-Fi access point, wherein the time is a time at which the device successfully connects to the second Wi-Fi access point; and wherein the program further includes instructions to: determine, according to the information about the optimal Wi-Fi access point and the information about the currently connected first Wi-Fi access point, that the optimal Wi-Fi access point meets the switch condition; query the historical information according to an identifier of each optional Wi-Fi access point to obtain a time corresponding to the identifier of each optional Wi-Fi access point; and select, in the at least one optional Wi-Fi access point, an optional Wi-Fi access point, whose identifier is corresponding to a time point that is closest to a current moment, as the optimal Wi-Fi access point. ### Claim 19 (depends on 13) The device according to claim 13, wherein the historical information further comprises a priority corresponding to the identifier of each second Wi-Fi access point; and wherein the program further includes instructions to: determine, according to the information about the optimal Wi-Fi access point and the information about the currently connected first Wi-Fi access point, that the optimal Wi-Fi access point meets the switch condition; query the historical information according to an identifier of each optional Wi-Fi access point to obtain a priority corresponding to the identifier of each optional Wi-Fi access point; and select, in the at least one optional Wi-Fi access point, an optional Wi-Fi access point, whose identifier is corresponding to a highest priority, as the optimal Wi-Fi access point. ### Claim 20 A non-transitory computer-readable medium having computer usable instructions stored thereon for execution by a processor, that when executed by the processor, cause the processor to: determine, by a device having a Wireless Fidelity (Wi-Fi) function, an optimal Wi-Fi access point in at least one optional Wi-Fi access point found by searching; determine, by the device, according to information about the optimal Wi-Fi access point and information about a currently connected first Wi-Fi access point, that the optimal Wi-Fi access point meets a switch condition; and disconnect, by the device, from the first Wi-Fi access point, and initiating a connection request to the optimal Wi-Fi access point.