COMMUNICATION SYSTEMS AND METHODS

1 . A method for establishing communication between a device and a terminal, comprising:

receiving a plurality of multicast packets from the terminal;

determining, according to the multicast packets, wireless connection information of a wireless network;

connecting to the wireless network according to the wireless connection information; and

generating a notification indicating a password associated with the device.

2 . The method according to claim 1 , wherein receiving the multicast packets from the terminal comprises:

scanning a plurality of multicast channels;

receiving, on one or more of the multicast channels, one or more first multicast packets from the terminal;

determining, according to the one or more first multicast packets, an identification of the terminal; and

if the identification of the terminal matches a predetermined identification, locking the one or more multicast channels.

3 . The method according to claim 2 , further comprising:

determining, according to the one or more first multicast packets, a length of a wireless password associated with the wireless network.

4 . The method according to claim 3 , further comprising:

receiving, on the one or more locked multicast channels, one or more second multicast packets from the terminal, each second multicast packet, comprising a serial number and at least a part of the wireless password corresponding to the serial number;

determining, according to the length of the wireless password and the serial numbers in the received second multicast packets, whether to receive additional second multicast packets; and

if no additional second multicast packets need to be received, determining the wireless password according to the received second multicast packets.

5 . The method according to claim 2 , wherein scanning the multicast channels further comprises:

if the multicast channels have different usage frequencies, first scanning multicast channels with usage frequencies that are above a predetermined frequency.

6 . A device for communication with a terminal, comprising:

a memory storing instructions; and

a processor configured to execute the instructions to:

receive a plurality of multicast packets from the terminal;

determine, according to the multicast packets, wireless connection information of a wireless network;

connect to the wireless network according to the wireless connection information; and

generate a notification indicating a password associated with the device.

7 . The device according to claim 6 , wherein the processor is further configured to execute the instructions to:

scan a plurality of multicast channels;

receive, on one or more of the multicast channels, one or more first multicast packets from the terminal;

determine, according to the received first multicast packets, an identification of the terminal; and

if the identification of the terminal matches a predetermined identification, lock the one or more multicast channels.

8 . The device according to claim 7 , wherein the processor is further configured to execute the instructions to:

determine, according to the received first multicast packets, a length of a wireless password associated with the wireless network.

9 . The device according to claim 8 , wherein the processor is further configured to execute the instructions to:

receive, on the one or more locked multicast channels, one or more second multicast packets from the terminal, each second multicast packet comprising a serial number and at least a part of the wireless password corresponding to the serial number;

determine, according to the length of the wireless password and the serial numbers in the received second multicast packets, whether to receive additional second multicast packets; and

if no additional second multicast packets need to be received, determine the wireless password according to the second multicast packets.

10 . The device according to claim 7 , wherein the processor is further configured to execute the instructions to:

if the multicast channels have different usage frequencies, first scan multicast channels with usage frequencies that are above a predetermined frequency.

11 . A non-transitory computer-readable storage medium storing instructions for establishing communication between a device and a terminal, the instructions causing a processor to perform operations comprising:

receiving a plurality of multicast packets from the terminal;

determining, according to the multicast packets, wireless connection information of a wireless network;

connecting to the wireless network according to the wireless connection information; and

generating a notification indicating a password associated with the device.

12 . The non-transitory computer-readable storage medium of claim 11 , wherein receiving the multicast packets from the terminal comprises:

scanning a plurality of multicast channels;

receiving, on one or more of the multicast channels, one or more first multicast packets from the terminal;

determining, according to the one or more first multicast packets, an identification of the terminal; and

if the identification of the terminal matches a predetermined identification, locking the one or more multicast channels.

13 . The non-transitory computer-readable storage medium of claim 12 , wherein the operations further comprise:

determining, according to the received first multicast packets, a length of a wireless password associated with the wireless network.

14 . The non-transitory computer-readable storage medium of claim 13 , wherein the operations further comprise:

receiving, on the one or more locked multicast channels, one or more second multicast packets from the terminal, each second multicast packet comprising a serial number and at least a part of the wireless password corresponding to the serial number;

determining, according to the length of the wireless password and the serial numbers in the received second multicast packets, whether to receive additional second multicast packets; and

if no additional second multicast packets need to be received, determining the wireless password according to the received second multicast packets.

15 . The non-transitory computer-readable storage medium of claim 12 , wherein scanning the multicast channels further comprises:

if the multicast channels have different usage frequencies, first scanning multicast channels with usage frequencies that are above a predetermined frequency.

16 . A method for establishing communication between a device and a terminal, comprising:

obtaining wireless connection information of a wireless network;

generating a plurality of multicast packets including wireless connection information of the wireless network;

sending the multicast packets to the device; and

after the device is connected to the wireless network, trigger the device to generate a notification indicating a password associated with the device.

17 . The method according to claim 16 , wherein

the plurality of multicast packets comprise one or more first multicast packets and one or more second multicast packets; and

generating the plurality of multicast packets further comprises:

writing into the one or more first multicast packets an identification of the terminal and a length of a wireless password associated with the wireless network; and

writing into each second multicast packet a serial number and at least a part of the wireless password corresponding to the serial number.

18 . The method according to claim 16 , wherein generating the plurality of multicast packets further comprises:

encrypting the information included in the plurality of multicast packets.

19 . A terminal, comprising:

a memory storing instructions; and

a processor configured to execute the instructions to:

obtain wireless connection information of a wireless network;

generate a plurality of multicast packets including wireless connection information of the wireless network;

send the multicast packets to a device; and

after the device is connected to the wireless network, trigger the device to generate a notification indicating a password associated with the device.

20 . The terminal according to claim 19 , wherein

the plurality of multicast packets comprise one or more first multicast packets and one or more second multicast packets; and

the processor is further configured to execute the instructions to:

write into the one or more first multicast packets an identification of the terminal and a length of a wireless password associated with the wireless network; and

write into each second multicast packet a serial number and at least a part of the wireless password corresponding to the serial number.

21 . The terminal according to claim 19 , wherein the processor is further configured to:

encrypting the information included in the multicast packets.

22 . A non-transitory computer-readable storage medium storing instructions for establishing communication between a device and a terminal, the instructions causing a processor to perform operations comprising:

obtaining wireless connection information of a wireless network;

generating a plurality of multicast packets including wireless connection information of the wireless network;

sending the multicast packets to the device; and

after the device is connected to the wireless network, trigger the device to generate a notification indicating a password associated with the device.

23 . The non-transitory computer-readable storage medium of claim 22 , wherein

the plurality of multicast packets comprise one or more first multicast packets and one or more second multicast packets; and

the operations further comprise:

writing into the one or more first multicast packets an identification of the terminal and a length of a wireless password associated with the wireless network; and

writing into each second multicast packet a serial number and at least a part of the wireless password corresponding to the serial number.

24 . The non-transitory computer-readable storage medium of claim 22 , wherein the operations further comprise:

encrypting the information included in the multicast packets.

25 . A method for establishing communication between a device and a terminal, comprising:

receiving, by the terminal, wireless connection information of a wireless network and a UID, the wireless connection information being associated with a format set;

determining, by the terminal, whether the format set introduces special characters into a graphic code;

converting the wireless connection information into a uniform format when the format set introduces special characters;

generating, by the terminal, the graphic code according to the wireless connection information and the UID;

displaying the code by the terminal;

scanning the code by the device;

decoding, by the device, the code to extract the wireless connection information and the UID; and

connecting, by the device, to the wireless network according to the wireless connection information.

26 . The method according to claim 25 , wherein the code comprises a QR code.

27 . The method according to claim 25 , wherein generating the code further comprises:

encrypting the wireless connection information and UID; and

generating the code, according to the encrypted wireless connection information and UID.

28 . The method according to claim 25 , wherein the UID is a server-generated UID, the method further comprising:

sending, by the device, the UID to the server;

determining, by the server, whether the UID has expired; and

if the UID has not expired, establishing, by the server, a binding relationship between the device and the terminal.

29 . The method according to claim 28 , further comprising:

if the UID has expired, generating, by the device, an error message indicating that the binding between the device and the terminal has failed.

30 . The method according to claim 25 , wherein the device comprises a camera.

31 . The method according to claim 25 , wherein the terminal comprises a display

32 . A device for communication with a terminal, comprising:

a camera configured to scan a QR code displayed by the terminal;

a memory storing instructions; and

a processor configured to execute the instructions to:

decode the QR code to extract the wireless connection information; and

connect to the wireless network according to the wireless connection information,

wherein,

the terminal generates the QR code according to converted wireless connection information of a wireless network,

the converted wireless connection information being wireless connection information converted into a uniform format when the terminal determines a format associated with the wireless connection information introduces special characters into the QR code.

33 . The device according to claim 32 , wherein:

the QR code is further coded according to a UID; and

the processor is further configured to execute the instructions to decode the QR code to extract the UID.

34 . The device according to claim 33 , wherein the processor is further configured to execute the instructions to:

receive, from a server, a notification that the UID has expired; and

if the UID has expired, generate an error message indicating that the binding between the device and the terminal has failed.

35 . A non-transitory computer-readable storage medium storing instructions for establishing communication between a device and a terminal, the instructions causing a processor to perform operations comprising:

receiving a QR code displayed by the terminal, the QR code being coded by the terminal according to converted wireless connection information of a wireless network, the converted wireless connection information being wireless connection information converted into a uniform format when the terminal determines a format associated with the wireless connection information introduces special characters into the QR code;

decode the QR code to extract the wireless connection information; and

connect to the wireless network according to the wireless connection information.

36 . The non-transitory computer-readable storage medium of claim 35 , wherein:

the QR code is further coded according to a UID; and

the operations further comprises decoding the QR code to extract the UID.

37 . The non-transitory computer-readable storage medium of claim 36 , wherein the operations further comprise:

receiving, from a server, a notification that the UID has expired; and

if the UID has expired, generating an error message indicating that the binding between the device and the terminal has failed.

38 . A method for establishing communication between a terminal and a device, comprising:

determining that a condition has occurred;

retrieving, from a memory of the terminal, a user name, and a password of the device;

forming a P2P connection between the terminal and the device;

sending the user name and password to the device for verification; and

if the verification fails, obtaining from a server an updated password of the device.

39 . The method according to claim 38 , further comprising:

saving the updated password in the memory.

40 . The method according to claim 38 , wherein the condition comprises at least one of:

the terminal is turned on;

the terminal is connected to a network; or

the terminal has started an application for managing a device bound to the terminal.

41 . The method according to claim 38 , further comprising:

retrieving, from the memory, a UID of the device;

querying, based on the UID, the server regarding availability status of the device; and

if the device is available for connection, forming the P2P connection.

42 . A terminal, comprising:

a memory storing:

instructions, and

a UID, a user name, and a password for a device; and

a processor configured to execute the instructions to:

determine that a condition has occurred;

retrieve the user name, and the password of the device;

form a P2P connection to the device;

send the user name and password to the device for verification; and

if the verification fails, obtain from a server an updated password of the device.

43 . The terminal according to claim 42 , wherein the processor is further configured to execute the instructions to:

save the updated password in the memory.

44 . The terminal according to claim 42 , wherein the condition comprises at least one of:

the terminal is turned on;

the terminal is connected to a network; or

the terminal has started an application for managing a device bound to the terminal.

45 . The terminal according to claim 42 , wherein the processor is further configured to execute the instructions to:

retrieve the UID of the device;

query, based on the UID, the server regarding availability status of the device; and

if the device is available for connection, form the P2P connection.

46 . A non-transitory computer-readable storage medium storing instructions for establishing communication between a device and a terminal, the instructions causing a processor to perform operations comprising:

determining that a condition has occurred;

retrieving, from a memory of the terminal, a user name and a password of the device;

forming a P2P connection between the terminal and the device;

sending the user name and password to the device for verification; and

if the verification fails, obtaining from a server an updated password of the device.

47 . The non-transitory computer-readable storage medium of claim 46 , wherein the operations further comprise:

saving the updated password in the memory.

48 . The non-transitory computer-readable storage medium of claim 46 , wherein the condition comprises at least one of:

the terminal is turned on;

the terminal is connected to a network; or

the terminal has started an application for managing one or more devices bound to the terminal.

49 . The non-transitory computer-readable storage medium of claim 46 , wherein the operations further comprise:

retrieving, from the memory, a UID of the device;

querying, based on the UID, the server regarding availability status of the device; and

if the device is available for connection, forming the P2P connection.