NETWORK ACCESS DEVICE, SYSTEM, AND COMMUNICATION METHOD

1 . A network access device, comprising: a processor and at least one communication interface for realizing detachable connection; the processor is connected with the at least one communication interface respectively; the processor is configured to:

detect whether each communication interface in the at least one communication interface is detachably connected with an external cellular communication device;

determine an available cellular communication device according to a detection result; and

establish, based on the available cellular communication device, an aggregation link for data transmission between the network access device and a target server.

2 . The network access device according to claim 1 , wherein the processor is further configured to:

generate a list of the available cellular communication device according to the available cellular communication device; and

distribute data to be transmitted to each available cellular communication device recorded in the list of the available cellular communication device when the data to be transmitted is received from a terminal device, for transmission to the target server by each available cellular communication device through the aggregation link between the network access device and the target server.

3 . The network access device according to claim 2 , wherein the processor is further configured to:

determine an idle communication interface from the at least one communication interface according to the list of the available cellular communication device;

when it is detected that the idle communication interface is detachably connected with an external cellular communication device, update the aggregation link between the network access device and the target server based on the cellular communication device detachably connected with the idle communication interface; and

update the list of the available cellular communication device according to the cellular communication device detachably connected with the idle communication interface.

4 . The network access device according to claim 2 , wherein the processor is further configured to:

determine, according to the list of the available cellular communication device, a non-idle communication interface from the at least one communication interface; and

update the list of the available cellular communication device when it is detected that a cellular communication device detachably connected with the non-idle communication interface has been detached.

5 . The network access device according to claim 2 , wherein the processor is specifically configured to:

acquire a link quality of a first sub-link corresponding to each available cellular communication device recorded in the list of the available cellular communication device when the data to be transmitted is received from the terminal device; and

distribute, according to the link quality, the data to be transmitted to each available cellular communication device recorded in the list of the available cellular communication device;

wherein the aggregation link between the network access device and the target server comprises the first sub-link corresponding to each available cellular communication device recorded in the list of the available cellular communication device.

6 . The network access device according to claim 1 , wherein there are a plurality of available cellular communication devices;

the processor is further configured to:

acquire a wireless network standard supported by each available cellular communication device in the plurality of available cellular communication devices and operator information supported by a subscriber identity card communicatively connected with each available cellular communication device, as a first acquisition result;

acquire cell information of an available cell obtained through scanning by each available cellular communication device in the plurality of available cellular communication devices, as a second acquisition result;

determine, according to the first acquisition result and the second acquisition result, cell access indication information of each available cellular communication device in the plurality of available cellular communication devices; and

send the cell access indication information of each available cellular communication device in the plurality of the available cellular communication devices to the corresponding available cellular communication device, so that each available cellular communication device accesses the corresponding cell according to the received cell access indication information.

7 . The network access device according to claim 6 , wherein the cell access indication information comprises cell information of a target cell;

wherein the cell information of the target cell is used to instruct the corresponding available cellular communication device to access the target cell.

8 . The network access device according to claim 1 , wherein the communication interface comprises a universal serial bus interface, a lightning interface or a firewire interface.

9 . The network access device according to claim 1 , further comprising: a wired wide area network interface;

wherein it is detected whether the wired wide area network interface is connected with a wired network;

the processor is specifically configured to:

establish, based on the available cellular communication device and the wired network, an aggregation link for data transmission between the network access device and the target server when it is detected that the wired wide area network interface is connected with a wired network.

10 . A network access system, comprising the network access device according to claim 1 and a cellular communication device for detachably connecting to the communication interface.

11 . A communication system, comprising:

a network access device comprising a processor and at least one communication interface for realizing detachable connection; the processor is connected with the at least one communication interface respectively; the processor is configured to detect whether each communication interface in the at least one communication interface is detachably connected with a cellular communication device; determine an available cellular communication device according to a detection result; and establish, based on the available cellular communication device, an aggregation link for data transmission between the network access device and a target server;

the available cellular communication device; and

the target server.

12 . A communication method, which is suitable for a network access device; wherein the network access device comprises at least one communication interface for realizing detachable connection; and the method comprises:

detecting whether each communication interface in the at least one communication interface is detachably connected with an external cellular communication device;

determining an available cellular communication device according to a detection result; and

establishing, based on the available cellular communication device, an aggregation link for data transmission between the network access device and a target server.

13 . The network access device according to claim 3 , wherein the processor is specifically configured to:

acquire a link quality of a first sub-link corresponding to each available cellular communication device recorded in the list of the available cellular communication device when the data to be transmitted is received from the terminal device; and

distribute, according to the link quality, the data to be transmitted to each available cellular communication device recorded in the list of the available cellular communication device;

wherein the aggregation link between the network access device and the target server comprises the first sub-link corresponding to each available cellular communication device recorded in the list of the available cellular communication device.

14 . The communication system according to claim 11 , wherein the processor is further configured to:

generate a list of the available cellular communication device according to the available cellular communication device; and

distribute data to be transmitted to each available cellular communication device recorded in the list of the available cellular communication device when the data to be transmitted is received from a terminal device, for transmission to the target server by each available cellular communication device through the aggregation link between the network access device and the target server.

15 . The communication system according to claim 14 , wherein the processor is further configured to:

determine an idle communication interface from the at least one communication interface according to the list of the available cellular communication device;

when it is detected that the idle communication interface is detachably connected with an external cellular communication device, update the aggregation link between the network access device and the target server based on the cellular communication device detachably connected with the idle communication interface; and

update the list of the available cellular communication device according to the cellular communication device detachably connected with the idle communication interface.

16 . The communication system according to claim 14 , wherein the processor is further configured to:

determine, according to the list of the available cellular communication device, a non-idle communication interface from the at least one communication interface; and

update the list of the available cellular communication device when it is detected that a cellular communication device detachably connected with the non-idle communication interface has been detached.

17 . The communication method according to claim 12 , wherein the method further comprises:

generating a list of the available cellular communication device according to the available cellular communication device; and

distributing data to be transmitted to each available cellular communication device recorded in the list of the available cellular communication device when the data to be transmitted is received from a terminal device, for transmission to the target server by each available cellular communication device through the aggregation link between the network access device and the target server.

18 . The communication method according to claim 17 , wherein the method further comprises:

determining an idle communication interface from the at least one communication interface according to the list of the available cellular communication device;

when it is detected that the idle communication interface is detachably connected with an external cellular communication device, updating the aggregation link between the network Preliminary Amendment access device and the target server based on the cellular communication device detachably connected with the idle communication interface; and

updating the list of the available cellular communication device according to the cellular communication device detachably connected with the idle communication interface.

19 . The communication method according to claim 17 , wherein the method further comprises:

determining, according to the list of the available cellular communication device, a non-idle communication interface from the at least one communication interface; and

updating the list of the available cellular communication device when it is detected that a cellular communication device detachably connected with the non-idle communication interface has been detached.

20 . A non-transitory computer storage medium storing a computer program, and when the computer program is executed by a computer, the communication method according to claim 12 is implemented.