TWI551097B - A narrow data transmission method and a system using the same - Google Patents

Description

Narrow data transmission method and system using the same

The present invention relates to the Internet of Things and the smart home field, and more particularly to a narrow data transmission method and a system using the narrow data transmission method.

The point-to-point PTP transmission technology currently in common use has two obvious shortcomings in the general narrow data transmission application: First, the P2P session establishment takes several seconds or even ten seconds, and the effect of instant messaging is not good; secondly, P2P Technology requires high-level OS resources such as Multi-Thread, as well as hardware resources such as CPU and Memory, resulting in a significant increase in the cost of the device.

Another common practice is a centralized cloud computing center that allows all device and user information exchanges to be centralized into a single large cloud host. There are two disadvantages to this approach:

First, a cloud computing center with a large centralized architecture that can support a large number of devices and users. There are usually tens of thousands of arrays inside, and the necessary actions or operations are performed logically. Whether it is a huge hardware device or a serial software design, it must be invested in a large number of managers and high funds, far from the average small and medium-sized enterprises or individuals can afford.

Second, centralized architectures in global application services often fail to provide more immediate speed response than decentralized architectures.

There are also some narrow data transmission methods, using the technology of remote domain name resolution, that is, using the same domain name but parsing the local corresponding in different regions. The IP address of the server receives or forwards the message between the client and the device, so that the burden of the system can be effectively dispersed, and the requirement for rapid response can be achieved. However, in the case of a global system application, the user may not be able to contact the device that is still in the local area because the user leaves the local area.

In view of this, the present invention provides a narrow data transmission method, and a system using the narrow data transmission method, the main purpose of which is to adopt the principle of division of labor, and the main control server responsible for management is matched with a forwarding server responsible for transmitting information. Help the client to perform data exchange on the device side, and achieve the goal of popularizing the Internet of Things.

Due to the above object, the narrow data transmission method of the present invention sequentially performs the following steps: querying an optional forwarding server list step: a device (Device) queries a host server (Coordinator Server) for optional use. Forwarding server list; select respondent, create and return a valid forwarding server list step: the device selects a responder from the list of available forwarding servers, creates a valid forwarding server list and sends back to Master server; regular sending step: The device periodically sends an Alive to each forwarding server of the active forwarding server list to maintain the connection status; and asks for a valid forwarding server list step A client (Client) asks the host server for a valid forwarding server list, which facilitates the way the client can contact the device.

The narrow data transmission method of the present invention also has two steps of reporting and updating. The reporting step defines before the step of querying the optional forwarding server list: all forwarding servers contact the master server, and the master server edits the optional forwarding server. Server list.

Of course, in the step of querying the optional forwarding server list, the master server has a list of optional forwarding servers built in, which is also within the scope of the present invention.

The updating step is between the two steps of periodically transmitting and querying the forwarding server list. The update step referred to here: If there is a change in the list of valid forwarding servers, the device resends the valid forwarding server list to the master server for updating.

In addition, after the step of querying the valid forwarding server list, there are the following steps: the client sends the data to the device side: the client sends the data to the device to the valid forwarding server, and forwards the data to the server. Forwarded to the device side; and the device side responds to the client step: the device end responds to the client through the forwarding server.

The invention provides a system using the narrow data transmission method, comprising: a master server, which provides an optional forwarding server list and an effective forwarding server list; a plurality of forwarding servers, each forwarding servo The device is edited by the master server in an optional forwarding server list; a device side queries the master server for an optional forwarding server list, and selects a responder to make a valid forwarding server list. The backhaul master server replaces the original valid forwarding server list; and a client queries the master server for a valid forwarding server list, and sends a data to the device through the effective forwarding server, and via The valid forwarding server receives the response from the device.

In this way, the present invention adopts the principle of division of labor, and uses the system of the narrow data transmission method to cooperate with the main control server responsible for management and the forwarding server responsible for transmitting information, thereby helping the user end perform the function of data exchange on the device side, and acquires the object. The purpose of universalization of networking.

The above-described objects, structures and functions of the present invention will be described with reference to the detailed description of the embodiments.

10‧‧‧Internet

12‧‧‧Master Server

14‧‧‧ Forwarding server

16‧‧‧Device side

18‧‧‧ Client

20‧‧‧ Report

21‧‧‧Query the list of optional forwarding servers

22‧‧‧Select respondents, create and return a valid forwarding server list

23‧‧‧Sent regularly

24‧‧‧Update

25‧‧‧Ask a valid forwarding server list

26‧‧‧User sends data to the device

27‧‧‧Device side responds to the client

1 is a schematic diagram of a preferred embodiment of a system using a narrow data transmission method of the present invention.

Figure 2 is a flow chart of a narrow data transmission method.

As shown in the first and second figures, a preferred embodiment of the system for using the narrow data transmission method is composed of a master server 12, a plurality of forwarding servers 14, a device terminal 16, and a client terminal 18. Used in an environment of the Internet 10.

In this embodiment, the master server 12 is a group, and each group of master servers 12 is composed of three computers. Of course, the master server 12 can also be composed of one, two or more computers. The master server 12 provides an optional forwarding server list and a list of valid forwarding servers. The optional forwarding server list may be the data built in the main control server 12 or obtained through the following narrow data transmission method.

In some embodiments, the number of the master servers 12 may be several, and each of the master servers 12 may be operated separately to achieve the backup effect.

These forwarding servers 14 each have a different group that is edited by the hosting server 12 in an optional forwarding server list. Simply put, the area is In consideration, these forwarding servers 14 are divided into groups such as Asia, America, and Europe. Assuming that the number of clients in the Asian group is increased, the number of forwarding servers 14 can be increased. If the number of clients in the Americas group is reduced, the number of forwarding servers 14 is downsized.

The device end 16 can be a host having an application programming interface (API) for managing electrical or electronic products in the room, such as brightness of the electric lamp, air volume or temperature of the air conditioner.

The client 18 can be a communication device such as a smart phone with an application interface.

It should be noted that the client 18 and the device 16 are connected to the Internet 10 through a router. Moreover, the Internet IP of the client 18 and the device 16 can be floating, and the address may be changed at regular intervals.

Next, the flow of use of narrow data transmission will be described. First, the step 20 is reported: all forwarding servers 14 contact the master server 12, which creates or edits an optional forwarding server list.

In other words, each forwarding server 14 reports to the master server 12 in a manner of transmitting a packet, and informs the forwarding server 14 of the identity and group information. At a fixed time, the forwarding server 14 executes the reporting procedure. Of course, the forwarding time of the forwarding server 14 can be adjusted.

For example, fifteen forwarding servers 14 report to the master server 12, which makes an optional forwarding server list, including all of the information of the forwarding server 14, such as identity and group.

However, if the master server 12 has built-in a list of optional forwarding servers, skip the step 20 and go directly to the next step.

Querying the optional forwarding server list 21 Step: The device terminal 16 queries the master server 12 for an optional forwarding server list.

Select responders, create and return a valid forwarding server list Step 22: The device end 16 selects a responder from the list of available forwarding servers, creates a valid forwarding server list, and transmits it back to the main control server 12.

In the above example, the device end 16 contacts all the forwarding servers 14 in the list through the packet mode, and only the five forwarding servers 14 of the numbers 2, 3, 5, 8, and 10 respond to the connection of the device terminal 16. The device end 16 edits the active forwarding server list and passes it back to the master server 12, overwriting the original valid forwarding server list. As such, the active forwarding server list of the master server 12 remains in the latest state.

Regularly send 23 steps: the device end 16 periodically sends an Alive to each forwarding server 14 of the active forwarding server list to maintain the connection state.

According to the above example, the device end 16 communicates with the five effective forwarding servers 14 of the number 2, 3, 5, 8, 10 through the router, and the forwarding server 14 responds to the device 16 by the router to keep the router unblocked. The connection status avoids the danger of disconnection.

Update 24 Step: If there is a change in the list of valid forwarding servers, the device 16 resends the valid forwarding server list to the hosting server 12 for updating to keep the active forwarding server list up to date.

For example, the forwarding server 14 of number 3 is abruptly interrupted. At this moment, the device end 16 rewrites the latest and valid forwarding server list, including four forwarding servers 14 still numbered 2, 5, 8, 10, etc., and returns the main control server 12 and overwrites the original valid forwarding. Server list.

Inquiring about a valid forwarding server list 25 step: the client 18 queries the master server 12 for a valid forwarding server list, and the master server 12 delivers the latest and valid forwarding server list to the client 18, facilitating the The client 18 knows the way to contact the device end 16.

The client sends the data to the device end 26: the client 18 sends the data to the device 16 to the effective forwarding server 14, and the forwarding server 14 The material is transferred to the device end 16.

The device end responds to the client terminal 27: the device terminal 16 responds to the client terminal 18 through the forwarding server 14.

In the above example, the data to be sent to the device 16 by the client 18 is sent to the device 16 through four forwarding servers 14 that are still connected by numbers 2, 5, 8, and 10. Moreover, the device end 16 responds to the client 18 by four forwarding servers 14, numbered 2, 5, 8, and 10.

20‧‧‧ Report

21‧‧‧Query the list of optional forwarding servers

22‧‧‧Select respondents, create and return a valid forwarding server list

23‧‧‧Sent regularly

24‧‧‧Update

25‧‧‧Ask a valid forwarding server list

26‧‧‧User sends data to the device

27‧‧‧Device side responds to the client

Claims (7)

A narrow data transmission method, the following steps are performed in sequence: querying an optional forwarding server list (21) step: a device (Device) queries a host server (Coordinator Server) for an optional forwarding server list; Selecting a respondent, creating and returning a valid forwarding server list (22) step: the device selects a responder from the list of available forwarding servers, creates a valid forwarding server list, and transmits back to the master server. Regularly send (23) steps: The device periodically sends a packet (Alive) to each forwarding server (Relay Server) of the active forwarding server list to maintain the connection status; and queries the valid forwarding server list ( 25) Step: A client (Client) asks the host server for a valid forwarding server list, which facilitates the way the client can contact the device. The narrow data transmission method of claim 1, wherein the step of updating (24) is added between the two steps of periodically transmitting (23) and querying the valid forwarding server list (25): an effective forwarding server If the list changes, the device resends the valid forwarding server list to the master server for updating. The narrow data transmission method according to claim 1, wherein the step (20) is reported before the step of querying the optional forwarding server list (21): all forwarding servers contact the main control server, The master server edits the list of available forwarding servers. The narrow data transmission method as described in claim 1, wherein the query In the optional forwarding server list (21) step, the master server has a list of optional forwarding servers built in. The narrow data transmission method according to any one of claims 1 to 4, wherein after the step of inquiring the valid forwarding server list (25), there is the following step: the user sends the data to the device side (26) Step: The client sends the data to the device (Date) to the effective forwarding server, and the forwarding server forwards the data to the device; the device responds to the client (27): the device responds by forwarding the server user terminal. A system for narrow data transmission method according to any one of claims 1 to 4, comprising: a master server (12) providing an optional forwarding server list and a valid forwarding a server list; a plurality of forwarding servers (14), each forwarding server (14) being edited by the master server (12) in an optional forwarding server list; a device end (16), The master server (12) queries the list of available forwarding servers, selects a respondent to make a valid forwarding server list, returns the master server (12) to replace the original valid forwarding server list; and a user Terminal (18), which queries the master server (12) for a valid forwarding server list, transmits a data to the device terminal (16) through the effective forwarding server (14), and transmits the valid forwarding servo The device (14) receives the response from the device (16). A system for using the narrow data transmission method described in claim 5, comprising: a master server (12), which provides an optional forwarding server list and a valid forwarding server list; Forwarding server (14), each forwarding server (14) is edited by the main control server (12) in an optional forwarding server list; a device end (16) to which the main control server ( 12) querying the list of optional forwarding servers, selecting a respondent to make a valid forwarding server list, returning the master server (12) to replace the original valid forwarding server list; and a user terminal (18), Asking the master server (12) for a valid forwarding server list, transmitting a data to the device terminal (16) through the active forwarding server (14), and receiving the device via the effective forwarding server (14) End (16) response.