# US 2021/0176809 A1 · Network connection method, device and apparatus > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2021/0176809 A1 - Document ID: US20210176809A1 - Status: Published application - Kind: A1 - Application number: 17/006,884 - Filed: 2020-08-30 - Published: 2021-06-10 - Earliest claimed: 2019-12-05 - Assignees: Beijing Xiaomi Mobile Software Co., Ltd. - Applicants: Beijing Xiaomi Mobile Software Co., Ltd. - Inventors: Dian FAN; Zheng LI - Web page: https://patentgrep.com/patent/US20210176809A1 ## CPC - H04W 76/18: Management of setup rejection or failure - H04L 12/2803: {Home automation networks} - H04L 69/40: for recovering from a failure of a protocol instance or entity, e.g. service redundancy protocols, protocol state redundancy or protocol service redirection (management of faults, events, alarms or notifications in data switching networks H04L41/06) - H04W 4/80: Services using short range communication, e.g. near-field communication [NFC], radio-frequency identification [RFID] or low energy communication - H04W 12/037: of the control plane, e.g. signalling traffic - H04W 12/068: {using credential vaults, e.g. password manager applications or one time password [OTP] applications} - H04W 12/50: Secure pairing of devices - H04W 76/11: Allocation or use of connection identifiers - H04L 67/12: specially adapted for proprietary or special-purpose networking environments, e.g. medical networks, sensor networks, networks in vehicles or remote metering networks - H04L 2012/2841: {Wireless} - H04W 12/06: Authentication - H04W 12/08: Access security - 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) - H04L: TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION (arrangements common to telegraphic and telephonic communication H04M) ## Abstract A network connection method includes: establishing a backup connection between a smart device and a network access device when the smart device fails to establish a network connection with the network access device due to incorrect networking verification information; receiving updated networking verification information sent by the network access device through the backup connection; and establishing the network connection with the network access device by using the updated networking verification information. ## Claims ### Claim 1 A network connection method, comprising: establishing a backup connection between a smart device and a network access device when the smart device fails to establish a network connection with the network access device due to incorrect networking verification information, wherein the backup connection is a communication connection different from the network connection; receiving updated networking verification information sent by the network access device through the backup connection; and establishing the network connection with the network access device by using the updated networking verification information. ### Claim 2 (depends on 1) The network connection method according to claim 1, wherein the networking verification information comprises one or more of a wireless network service set identifier (SSID) and a wireless network connection password. ### Claim 3 (depends on 1) The network connection method according to claim 1, wherein the establishing a backup connection between a smart device and a network access device comprises: broadcasting relevant information in a predetermined format for establishing the backup connection, so that the network access device establishes the backup connection with the smart device according to the relevant information when detecting the relevant information in the predetermined format. ### Claim 4 (depends on 1) The network connection method according to claim 1, further comprising: receiving identifier information in synchronization with that the network access device receives the identifier information, before the network connection established by using the networking verification information is disconnected between the smart device and the network access device, wherein the identifier information is fed back by a server side, and is configured for the network access device to verify validity of the smart device before the network access device sends the updated networking verification information to the smart device. ### Claim 5 (depends on 4) The network connection method according to claim 4, further comprising: sending, to the network access device, a request for obtaining the updated networking verification information, before receiving the updated networking verification information sent by the network access device through the backup connection, wherein the request is encrypted by using the identifier information or carries the identifier information. ### Claim 6 (depends on 1) The network connection method according to claim 1, further comprising: disconnecting the backup connection with the network access device, after establishing the network connection with the network access device. ### Claim 7 A network connection method, comprising: establishing a backup connection with a smart device according to received relevant information in a predetermined format, when determining according to the relevant information that the smart device fails to establish a network connection with a network access device due to incorrect networking verification information, wherein the backup connection is a communication connection different from the network connection; and sending updated networking verification information to the smart device through the backup connection, so that the smart device establishes the network connection with the network access device by using the updated networking verification information. ### Claim 8 (depends on 7) The network connection method according to claim 7, further comprising: receiving identifier information fed back by a server side in synchronization with that the smart device receives the identifier information, before the network connection established by using the networking verification information is disconnected between the smart device and the network access device; and verifying validity of the smart device by using the identifier information, before sending the updated networking verification information to the smart device through the backup connection. ### Claim 9 A smart device, comprising: a processor; and memory having instructions stored therein executable by the processor, wherein the instructions, when being executed by the processor, cause the processor to implement a network connection method comprising: establishing a backup connection between a smart device and a network access device when the smart device fails to establish a network connection with the network access device due to incorrect networking verification information, wherein the backup connection is a communication connection different from the network connection; receiving updated networking verification information sent by the network access device through the backup connection; and establishing the network connection with the network access device by using the updated networking verification information. ### Claim 10 (depends on 9) The smart device according to claim 9, wherein the networking verification information comprises one or more of a wireless network service set identifier (SSID) and a wireless network connection password. ### Claim 11 (depends on 9) The smart device according to claim 9, wherein the establishing a backup connection between a smart device and a network access device comprises: broadcasting relevant information in a predetermined format for establishing the backup connection, so that the network access device establishes the backup connection with the smart device according to the relevant information when detecting the relevant information in the predetermined format. ### Claim 12 (depends on 9) The smart device according to claim 9, wherein the network connection method further comprises: receiving identifier information in synchronization with that the network access device receives the identifier information, before the network connection established by using the networking verification information is disconnected between the smart device and the network access device, wherein the identifier information is fed back by a server side, and is configured for the network access device to verify validity of the smart device before the network access device sends the updated networking verification information to the smart device. ### Claim 13 (depends on 12) The smart device according to claim 12, wherein the network connection method further comprises: sending, to the network access device, a request for obtaining the updated networking verification information, before receiving the updated networking verification information sent by the network access device through the backup connection, wherein the request is encrypted by using the identifier information or carries the identifier information. ### Claim 14 (depends on 9) The smart device according to claim 9, wherein the network connection method further comprises: disconnecting the backup connection with the network access device, after establishing the network connection with the network access device. ### Claim 15 (depends on 7) A network access device implementing the network connection method of claim 7, comprising: a processor; and memory having instructions stored therein executable by the processor, wherein the instructions, when being executed by the processor, cause the processor to implement steps of the network connection method. ### Claim 16 (depends on 15) The network access device according to claim 15, wherein the network connection method further comprises: receiving identifier information fed back by a server side in synchronization with that the smart device receives the identifier information, before the network connection established by using the networking verification information is disconnected between the smart device and the network access device; and verifying validity of the smart device by using the identifier information, before sending the updated networking verification information to the smart device through the backup connection. ### Claim 17 (depends on 1) A smart device implementing the network connection method of claim 1, wherein the smart device comprises at least one of a mobile terminal and a smart home device. ### Claim 18 (depends on 17) An Internet of Things (IoT) system comprising the smart device of claim 17, further comprising the network access device. ### Claim 19 (depends on 18) The IoT system of claim 18, wherein the network access device is configured to: establish the backup connection with the smart device according to received relevant information in the predetermined format, when determining according to the relevant information that the smart device fails to establish the network connection with the network access device due to incorrect networking verification information, wherein the backup connection is the communication connection different from the network connection; and send updated networking verification information to the smart device through the backup connection, so that the smart device establishes the network connection with the network access device by using the updated networking verification information ### Claim 20 (depends on 19) The IoT system of claim 19, wherein the networking verification information in the smart device is updated automatically, and the network connection is established automatically between the smart device and the network access device without user participation.