CN106792798B - Connection detection method and device for remote assistance of mobile terminal - Google Patents

Abstract

The invention provides a connection detection method and device for remote assistance of a mobile terminal, wherein the connection detection method for remote assistance of a mobile terminal includes: initiating a connection request for remote assistance to a receiver of remote assistance through a network; The connection detection is performed on multiple connections provided by multiple relay sites existing between the receiver and the receiver, wherein each connection is detected according to the following steps: sending a detection signal through the connection; receiving the first time through the connection When the receiver responds to the probe signal, the state of the connection is switched to an active but unstable connection state; within a specified time, the connection is determined according to the signal probe response result of the connection. Whether the line can run stably; select a line that can run stably to establish remote assistance between the sender and the receiver. The invention can improve network stability, shorten data transmission time, ensure data accuracy, and improve user experience.

Description

Connection detection method and device for remote assistance of mobile terminal

technical field

The invention relates to the field of Internet technology, and in particular, to a connection detection method and device for remote assistance of a mobile terminal.

Background technique

With the rapid development of Internet technology, mobile terminal remote assistance services based on mobile Internet technology are becoming more and more popular, and are widely used by users in daily life. For example, when a user encounters something that cannot be solved by himself, he can very conveniently seek help through remote assistance through a mobile terminal. Therefore, as the mobile terminal remote assistance service becomes more and more mature and popular, the performance requirements of the network are getting higher and higher, and subsequently, the stability requirements of signal transmission during remote assistance between mobile terminals are also becoming higher and higher.

In the prior art, the mobile terminals of different users may be from different operators, or the mobile terminals of users may be from the same operator, but some users may use WIFI networks, and some users may use 2G, 3G, and 4G networks. Under certain circumstances, when performing remote assistance of the mobile terminal, the signal is prone to unstable state, and sometimes the problem of data packet loss may occur, which brings a lot of inconvenience to the user.

Therefore, there is an urgent need for a connection method that can ensure stable, fast and complete transmission of data during remote assistance between mobile terminals to improve network performance and thus improve user experience.

SUMMARY OF THE INVENTION

In view of the above problems, the present invention is proposed to provide a connection detection method and a corresponding detection device for remote assistance of a mobile terminal that overcome the above problems or at least partially solve the above problems.

According to an aspect of the embodiments of the present invention, a connection detection method for remote assistance of a mobile terminal is provided, which is applied to an initiator of remote assistance, and the method includes:

Initiate a remote assistance connection request to the remote assistance recipient through the network;

Perform connection detection on multiple connections provided by multiple relay sites existing between the sender and the receiver, where each connection is detected according to the following steps:

Send out a probe signal through the connection; when the receiver's response message to the probe signal is received for the first time through the connection, switch the state of the connection to an active but unstable connection state; at a specified time Inside, determine whether the connection can run stably according to the signal detection response result of the connection;

Select a stable connection to establish remote assistance between the sender and the receiver.

Optionally, within a specified time, determine whether the connection can run stably according to the signal detection response result of the connection, including:

When determining whether the response message from the receiver can continue to be received within the specified time;

If so, modify the state of the connection to an operational state, and determine that the connection is in a stable operation state;

If not, it is determined that the connection has been interrupted.

Optionally, within a specified time, determine whether the connection can run stably according to the signal detection response result of the connection, further including:

Perform loop detection on the connection within the specified time to obtain a loop detection result;

Combining the current connection state of the connection and the loop detection result, it is further determined whether the connection can run stably.

Optionally, combining the current connection state of the connection and the loop detection result, it is further determined whether the connection can run stably, including:

If the current connection state of the connection is in operation but unstable, and the cycle detection result is that the number of detection failures is not greater than the preset threshold, it is determined that the connection can run stably;

If the current connection state of the connection is running, and the cycle detection result is that the number of detection failures is greater than the preset threshold, it is determined that the connection is switched to the running but unstable connection state.

Optionally, if it is determined that at least two connections can run stably based on the current connection state of the connection and the loop detection result, select the connection that can run stably to establish a remote connection between the sender and the receiver. Assistance also includes:

Further compare the number of loop detection failures of each connection;

The connection with the least number of failed round-robin probes is selected to establish remote assistance between the sender and the receiver.

Optionally, selecting a connection that can run stably to establish remote assistance between the sender and the receiver, further comprising:

When there are multiple connections that can run stably, the optimal connection is determined in combination with at least one of the following parameters: the last time the receiver received the data packet, and the delay time RTT of each connection;

Selecting the optimal connection establishes remote assistance between the sender and the receiver.

Optionally, performing connection detection on multiple connections provided by multiple relay sites existing between the sender and the receiver, further comprising:

Selecting at least one connection for connection detection among the multiple connections provided by the multiple relay sites by using a preset rule;

Perform connection detection on at least one selected connection;

Wherein, the preset rules include at least one of the following:

The connection that has been selected before this connection;

Among the connections that are not running and have been successfully detected before, the connection that has not been detected for the longest time;

The connection that has not been probed for the longest time.

Optionally, the method further includes:

If the network environment of the remote assistance changes, the connection between the initiator and the receiver is re-selected to establish the remote assistance.

Optionally, the network environment of the remote assistance changes, including at least one of the following:

A new connection is generated in the network environment;

A connection in the network environment is destroyed;

The state of the connection in the network environment is changed;

the receiver receives a remote detection signal;

The receiving end receives the remote data packet.

Optionally, the detection signal is an Internet probe PING.

According to another aspect of the embodiments of the present invention, a connection detection device for remote assistance of a mobile terminal is provided, which is applied to an initiator of remote assistance, and the device includes:

The connection request initiating module is suitable for initiating a connection request for remote assistance to the recipient of the remote assistance through the network;

The connection detection module is adapted to perform connection detection on multiple connections provided by multiple relay sites existing between the sender and the receiver, wherein each connection is detected according to the following steps: through the connection The line sends out a detection signal; when the receiver's response message to the detection signal is received through the connection for the first time, the state of the connection is switched to an operating but unstable connection state; within a specified time, according to the The signal detection response result of the connection determines whether the connection can operate stably;

The remote assistance establishing module is adapted to select a connection that can run stably to establish remote assistance between the sender and the receiver.

Optionally, the connection detection module is further adapted to:

When determining whether the response message from the receiver can continue to be received within the specified time;

If so, modify the state of the connection to an operational state, and determine that the connection is in a stable operation state;

If not, it is determined that the connection has been interrupted.

Optionally, the connection detection module is further adapted to:

Perform loop detection on the connection within the specified time to obtain a loop detection result;

Combining the current connection state of the connection and the loop detection result, it is further determined whether the connection can run stably.

Optionally, the connection detection module is further adapted to:

If the current connection status of the connection is in operation but unstable, and the cycle detection result is that the number of detection failures is not less than the preset threshold, it is determined that the connection can run stably;

If the current connection state of the connection is running, and the cycle detection result is that the number of detection failures is greater than the preset threshold, it is determined that the connection is switched to the running but unstable connection state.

Optionally, the remote assistance establishing module is further adapted to:

If it is determined that at least two connections can run stably in combination with the current connection state of the connection and the cycle detection result, further compare the number of times that the cycle detection fails for each connection;

The connection with the least number of failed round-robin probes is selected to establish remote assistance between the sender and the receiver.

Optionally, the remote assistance establishing module is further adapted to:

When there are multiple connections that can run stably, the optimal connection is determined in combination with at least one of the following parameters: the last time the receiver received the data packet, and the delay time RTT of each connection;

Selecting the optimal connection establishes remote assistance between the sender and the receiver.

Optionally, the connection detection module is further adapted to:

Selecting at least one connection for connection detection among the multiple connections provided by the multiple relay sites by using a preset rule;

Perform connection detection on at least one selected connection;

Wherein, the preset rules include at least one of the following:

The connection that has been selected before this connection;

Among the connections that are not running and have been successfully detected before, the connection that has not been detected for the longest time;

The connection that has not been probed for the longest time.

Optionally, the device further includes:

The restarting module is adapted to re-select a connection between the initiator and the receiver to establish the remote assistance if the network environment of the remote assistance changes.

Optionally, the network environment of the remote assistance in the restart module changes, including at least one of the following:

A new connection is generated in the network environment;

A connection in the network environment is destroyed;

The state of the connection in the network environment is changed;

the receiver receives a remote detection signal;

The receiving end receives the remote data packet.

Optionally, the detection signal is an Internet probe PING.

According to yet another aspect of the embodiments of the present invention, a mobile terminal is provided, including a processor and a memory:

The memory is used to store a program for executing any of the above-mentioned connection detection methods for remote assistance of a mobile terminal;

The processor is configured to execute programs stored in the memory.

According to yet another aspect of the embodiments of the present invention, a computer storage medium is provided for storing computer software instructions used by the connection detection device for the above-mentioned remote assistance of the mobile terminal. The program designed by the connection detection device.

In the embodiment of the present invention, in order to solve the problem that the network signal is unstable during the remote assistance of the mobile terminal during the remote assistance of the mobile terminal due to the different operators that the user's mobile terminal belongs to, or the different networks used by the user when they belong to the same operator And the problem of frequent data packet loss, a connection detection method for remote assistance of mobile terminals is proposed. The implementation of the method can provide a high-quality transmission channel for users when the mobile terminal performs remote assistance, so as to meet the purpose of fast, complete and stable data transmission through this channel, and at the same time, it can improve the security performance of the network and ensure the accuracy of the data. properties to enhance the user experience. Specifically, the connection between the remote assistance of the mobile terminal is detected. First, the initiator of the remote assistance can initiate a connection request for the remote assistance to the receiver of the remote assistance through the network, and the receiver of the remote assistance receives the connection. After receiving the requested signal, it responds to the signal, indicating that the transmission channel between the two is connected. After receiving the response, the sender of the remote assistance can establish a connection on the transmission channel and perform corresponding data transmission. However, there are multiple connection channels between the sender and receiver of remote assistance. In order to ensure the stability of the signal and the accuracy of the data, the multiple connection channels provided by the multiple relay sites between the sender and the receiver can be Line detection is performed to find the channel with the most stable signal transmission and the fastest transmission speed to establish remote assistance between the sender and the receiver. When detecting each specific connection, a detection signal can be sent through the connection, and the receiver of the connection will respond after receiving the detection signal. After it is determined that the connection is connected, the connection detection method for remote assistance of a mobile terminal provided in this embodiment switches the state of the connection to an active but unstable connection state, instead of determining the connection After connecting, switch the connection state to running directly. This transition of state switching prevents the previously determined stable state from becoming unstable when the detection signal is subsequently interrupted or other problems cause the connection to be interrupted, which further improves the transmission stability. When the connection is in the running but unstable connection state, it can be determined whether the connection can run stably according to the signal detection response result of the connection within a specified time, which provides an optimal connection for selecting an optimal connection. important foundation. Finally, according to the detection results, select a connection that can run stably to establish remote assistance between the sender and the receiver. It can be seen that, by using the method provided by the embodiment of the present invention, a connection channel that can ensure stable and fast signal transmission can be provided for the user when the mobile terminal is assisted remotely. It avoids problems such as signal interruption and data packet loss, improves network stability, shortens data transmission time, ensures data accuracy, improves user experience, and provides users with great convenience.

The above description is only an overview of the technical solutions of the present invention, in order to be able to understand the technical means of the present invention more clearly, it can be implemented according to the content of the description, and in order to make the above and other purposes, features and advantages of the present invention more obvious and easy to understand , the following specific embodiments of the present invention are given.

The above and other objects, advantages and features of the present invention will be more apparent to those skilled in the art from the following detailed description of the specific embodiments of the present invention in conjunction with the accompanying drawings.

Description of drawings

Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are for the purpose of illustrating preferred embodiments only and are not to be considered limiting of the invention. Also, the same components are denoted by the same reference numerals throughout the drawings. In the attached image:

1 is a process flow diagram of a connection detection method for remote assistance of a mobile terminal according to an embodiment of the present invention;

2 is a schematic diagram of multiple connection modes between remote assistance of a mobile terminal according to an embodiment of the present invention;

3 is a diagram of three ways to select a detected connection by using a preset rule according to an embodiment of the present invention;

4 is a process flow chart of detecting each connection provided by multiple relay sites existing between a sender and a receiver according to an embodiment of the present invention;

Fig. 5 is the existing state transition diagram of the connection of the remote assistance of the mobile terminal according to an embodiment of the present invention;

Fig. 6 is the state transition diagram of the present invention of the connection of the remote assistance of the mobile terminal according to an embodiment of the present invention;

7 is a schematic block diagram of a connection detection device for remote assistance of a mobile terminal according to an embodiment of the present invention;

FIG. 8 is another schematic block diagram of a connection detection device for remote assistance of a mobile terminal according to an embodiment of the present invention; and

FIG. 9 is a schematic structural diagram of a mobile terminal according to an embodiment of the present invention.

Detailed ways

Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited by the embodiments set forth herein. Rather, these embodiments are provided so that the present disclosure will be more thoroughly understood, and will fully convey the scope of the present disclosure to those skilled in the art.

In order to solve the above technical problem, an embodiment of the present invention provides a connection detection method for remote assistance of a mobile terminal. FIG. 1 is a process flow diagram of a connection detection method for remote assistance of a mobile terminal according to an embodiment of the present invention. As shown in FIG. 1 , the connection detection method for remote assistance of the mobile terminal includes at least steps S102 to S106:

Step S102, initiating a connection request for remote assistance to the recipient of the remote assistance through the network;

Step S104, performing connection detection on multiple connections (connections) provided by multiple relay sites existing between the sender and the receiver, wherein each connection is detected according to the following steps:

Send a detection signal through the connection; when the receiver's response message to the detection signal is received through the connection for the first time, the connection state is switched to an operating but unstable connection state; within a specified time, according to the connection The signal detection response result of the connection determines whether the connection can operate stably;

Step S106, select a connection that can run stably to establish remote assistance between the sender and the receiver.

In the embodiment of the present invention, in order to solve the problem that the network signal is unstable during the remote assistance of the mobile terminal during the remote assistance of the mobile terminal due to the different operators that the user's mobile terminal belongs to, or the different networks used by the user when they belong to the same operator And the problem of frequent data packet loss, a connection detection method for remote assistance of mobile terminals is proposed. The implementation of the method can provide a high-quality transmission channel for the user when the mobile terminal performs remote assistance, so as to meet the purpose of fast, complete and stable data transmission, and at the same time, it can improve the security performance of the network, ensure the accuracy of the data, and improve the user experience. Specifically, the connection between the remote assistance of the mobile terminal is detected. First, the initiator of the remote assistance can initiate a connection request for the remote assistance to the receiver of the remote assistance through the network, and the receiver of the remote assistance receives the connection. After receiving the requested signal, it responds to the signal, indicating that the transmission channel between the two is connected. After receiving the response, the sender of the remote assistance can establish a connection on the transmission channel and perform corresponding data transmission. However, there are multiple connection channels between the sender and receiver of remote assistance. In order to ensure the stability of the signal and the accuracy of the data, the multiple connection channels provided by the multiple relay sites between the sender and the receiver can be Line detection is carried out to find a channel with the most stable transmission signal and the fastest transmission speed, and establish remote assistance between the sender and the receiver. When detecting each specific connection, a detection signal can be sent through the connection, and the receiver of the connection will respond after receiving the detection signal. After it is determined that the connection is connected, the connection detection method for remote assistance of a mobile terminal provided in this embodiment switches the state of the connection to an active but unstable connection state, instead of determining the connection After connecting, switch the connection state to running directly. This transition of state switching prevents the previously determined stable state from becoming unstable when the detection signal is subsequently interrupted or other problems cause the connection to be interrupted, which further improves the transmission stability. When the connection is in the running but unstable connection state, it can be determined whether the connection can run stably according to the signal detection response result of the connection within a specified time, which provides an optimal connection for selecting an optimal connection. important foundation. Finally, according to the detection results, select a connection that can run stably to establish remote assistance between the sender and the receiver. It can be seen that, by using the method provided by the embodiment of the present invention, a connection channel that can ensure stable and fast signal transmission can be provided for the user when the mobile terminal is assisted remotely. It avoids problems such as signal interruption and data packet loss, improves network stability, shortens data transmission time, ensures data accuracy, improves user experience, and provides users with great convenience.

Specifically, when using the connection detection method for remote assistance of a mobile terminal provided by the embodiment of the present invention, the remote assistance of a mobile terminal (mobile phone, tablet computer, etc., which is commonly used as an example in the following) is often used by users as an example. For example, the mobile terminal held by user A is the initiator of this remote assistance (hereinafter referred to as user A), and the mobile terminal held by user B is the recipient of this remote assistance (hereinafter referred to as user B). Using the method provided by the embodiment of the present invention, the initiator of the remote assistance (that is, user A) initiates a connection request for the remote assistance of the mobile phone to the recipient of the remote assistance (that is, user B) through the network, and user B receives the connection request signal Then, make corresponding feedback to the request signal. If user B accepts the request, the connection for remote assistance is connected, and users A and B can perform remote assistance through the connection. If user B rejects the request, the connection to the remote assistance is interrupted. Meanwhile, after the user B accepts the request, the remote assistance can be performed through multiple connections. FIG. 2 is a schematic diagram of multiple connection manners between remote assistance of a mobile terminal according to an embodiment of the present invention. As shown in FIG. 2 , a connection can be established between user A and user B through direct transfer, or through a transit server. P2P (Peer to Peer, peer-to-peer network) is a distributed application architecture that distributes tasks and workloads among peers (Peers), and is a networking or network form formed by a peer-to-peer computing model at the application layer. . STUN (SimpleTraversal of UDP over NATS, UDP Simple Traversal of NAT (Network Address Translation)) is a network protocol that allows clients behind NAT (or multiple NATs) to find out their own public network address, Find out which type of NAT you are behind and which network port the NAT is bound to a local port. UDP (User Datagram Protocol, User Datagram Protocol) is a connectionless transport layer protocol in the OSI (Open System Interconnection, Open System Interconnection) reference model, providing a transaction-oriented simple and unreliable information transmission service. TCP (Transmission Control Protocol, Transmission Control Protocol) is a connection-oriented, reliable, byte stream-based transport layer communication protocol. When performing remote assistance between user A and user B, you can select different connections to establish a connection. In this embodiment, user A is the party that initiates the connection (ICE_CONTROLLING), and user B is the party that receives the connection (ICE_CONTROLLED). When establishing a connection, the connection state (connect state) is divided into two types: connected (connected) and not connected (not connected) (the TCP connection will have a disconnected state). The receiving state (receive state, downlink transmission) is divided into two types: not receiving (not receiving) and receiving (receiving). The write state (writestate, upstream transmission) is divided into four types: initial state (init), transmission in operation, but unstable (unreliable), transmission in operation (writable), and transmission timeout (timeout).

Correspondingly, the choice of relay server deployment and connection method will directly affect the quality of the connection. Therefore, in order to make the signal more stable and the data transmission smoother during remote assistance, the connection between user A and user B can be improved. Multiple connections provided by multiple relay sites between users are used for connection detection to find an optimal connection channel to establish a connection between users A and B.

Further, to detect multiple connections provided by multiple relay sites existing between user A and user B, a preset rule can be used to select at least one connection from the multiple connections provided by the multiple relay sites. connect. There are many ways to select a detected connection by using a preset rule. FIG. 3 shows a diagram of three ways to select a detected connection by using a preset rule according to an embodiment of the present invention. As shown in Figure 3:

First, you can select the selected connection before this connection (Selected connection).

Second, you can select the connection that is not running and has been successfully detected before, the connection that has not been detected for the longest time (the connection that is not writable and has been successfully pinged, the connection that has not been pinged for the longest time) .

Third, you can select the connection that has not been probed for the longest time (the connection that has not been pinged for the longest time).

After the connection is selected according to the above method, this embodiment proposes a detection method for performing specific detection on the connection. FIG. 4 is a process flow chart of detecting each connection provided by a plurality of relay sites existing between a sender and a receiver according to an embodiment of the present invention. As shown in FIG. 4 , the detection method includes at least steps S402 to S406:

Step S402, sending a detection signal through the connection;

Step S404, when the response message of the receiver to the probe signal is received for the first time through the connection, the state of the connection is switched to an active but unstable connection state;

Step S406 , within a specified time, determine whether the connection can run stably according to the signal detection response result of the connection.

Specifically, user A can send a detection signal PING (Packet Internet Groper) through the connection. PING is a command under Windows, Unix and Linux systems. It is also an Internet packet explorer used to check whether the network is smooth or to measure the speed of the network connection. Using the uniqueness of the IP address of the machine on the network, send a data packet to the target IP address, and then ask the other party to return a data packet of the same size to determine whether the two network machines are connected and determine the specific delay. You can try to select a connection to send PING every fixed time (it may not be selected, and it will not be sent if it cannot be selected). At this time, it is divided into two modes: frequent mode and general mode. The frequent mode is to send a PING to the selected connection every 48ms, and the general mode is to send a PING to the selected connection every 250ms. A shortest time interval can also be set, and PING is sent to the selected connection every time interval, and the time interval can be determined according to the state of the selected connection. Therefore, after the execution of step S402 is completed, user B receives the detection signal sent by user A, and makes corresponding feedback for the signal. When user A receives the response message of user B for the detection signal for the first time through the connection, Switch the state of the connection accordingly.

FIG. 5 shows an existing state transition diagram of the connection of the remote assistance of the mobile terminal according to an embodiment of the present invention. As shown in FIG. 5 , user A sends a detection signal through the connection, and user B receives the detection signal sent by user A and gives feedback to generate the initial state of the connection (step 51 ). When user A receives the detection signal through the connection for the first time When the response message for the signal from user B arrives, the state of the connection is switched to active (step 52 ), and if no response message to the probe signal is received after this state, the state is switched to active Moderate but unstable (step 53), if a response message is received in the running but unstable state, switch the connection state to running again (step 54), if no response message is received for too long, transmit Timeout (step 55), the connection is destroyed (step 57). If the connection state is in transmission operation and has the same network cost and priority, the transmission times out (step 56 ), and the connection is destroyed (step 57 ). However, when using a mobile phone for remote assistance at this time, there may be a situation where the original network signal is stable but the network signal is unstable after a period of time, and problems such as signal interruption cannot be avoided.

To this end, the embodiment of the present invention executes step S404, and FIG. 6 shows a state transition diagram of the present invention of the connection of the remote assistance of the mobile terminal according to an embodiment of the present invention. As shown in FIG. 6 , user B receives the probe signal sent by user A and gives feedback, and generates the initial state of the connection (step 61 ). When user A receives the response message from user B to the signal for the first time through the connection At this time, if the network situation can be clearly determined to be a stable state, at this time, in order to speed up the establishment of the connection, the connection can be directly set to the running state and try to transmit (step 62-a). If the network is stable, the connection status is switched to running but unstable (step 62-b). At this time, when using the mobile phone for remote assistance, the user does not directly think that the network is in a state of In the stable state, the network is considered to be in an unstable state, and then signal detection can be continued to find a more stable connection to avoid problems such as signal interruption.

After the execution of step S404 is completed, it is determined that the connection between user A and user B is in an operating but unstable state. In order to find a more stable connection, the signal detection is continued, and step S406 is executed. The signal probe response results of the connection further determine whether the connection can operate stably. When further judging the stable state of the connection according to the signal detection response result of the connection, it can be divided into two aspects:

In the first aspect, it is determined whether the response message from the receiver can continue to be received within the specified time.

Specifically, the signal detection response result of the connection is analyzed and judged. If user A can continue to receive response messages from user B within the specified time, it means that the connection is always connected and can be provided to the user for data transmission. Then, the state of the connection is modified to an operable state, and it is determined that the connection is in a stable operation state. If user A does not receive a response message from user B within the specified time, indicating that the connection has been interrupted, the connection will be destroyed and not considered.

In the second aspect, the connection is cyclically detected within a specified time to obtain a cyclic detection result, and further, it is further determined whether the connection can run stably by combining the current connection state of the connection and the cyclic detection result.

Specifically, when the connection first enters the running but unstable state, the loop detection starts, and PING is attempted 10 times in each round. Among them, if there is a connection that has not completed the basic PING times, or the state of the connection is unstable, the frequent detection mode can be adopted, and a PING is sent to the connection every 48ms. When cyclic detection is performed on the connection that has been selected before this connection is selected, if the connection is in a running but unstable state, a PING can be sent to the connection every 900ms. If the connection is in operation, you can send a PING to the connection every 2500ms, and at least 5 times of PING should be sent at this time. -Trip Time, delay time). When cyclic detection is performed on the backup connection between them, a PING can be sent to the connection every 2500ms. If the state of the connection between user A and user B is in the running but unstable state, at this time, it can be further determined whether the connection can run stably in combination with the loop detection result. When the cycle detection result is that the number of detection failures is not greater than the preset threshold, it means that the current state of the connection is relatively stable. As shown in Figure 6, if the preset threshold is 3, when the number of detection failures in the cycle detection result is 0, 1, 2, and 3, it indicates that the number of detection failures is not greater than the preset threshold, and it is determined that the connection can run stably, then The connection state is switched to running (step 63). If the connection status between user A and user B is running, at this time, it can also be further determined whether the connection can run stably in combination with the loop detection result. When the cycle detection result is that the number of detection failures is greater than the preset threshold, it means that the current state of the connection is unstable. As shown in Figure 6, the preset threshold is 3, and when the cycle detection result has a detection failure number of 4, 5, 6, 7... ..., it indicates that the number of detection failures is greater than the preset threshold, and it is determined that the connection is unstable, and the connection is switched to an active but unstable connection state (step 64). If the response message for the probe signal is not received for too long in this state, the transmission times out (step 65 ), and the connection mode is destroyed (step 66 ).

After the above steps are executed, if it is determined that at least two connections can run stably based on the current connection state of the connection and the loop detection result, when selecting a connection that can run stably to establish remote assistance between the sender and the receiver , the number of cyclic detection failures of each connection can be further compared. The fewer the number of cyclic detection failures, the higher the stability of the connection. The connection with the least number of cyclic detection failures can be selected to establish remote assistance between the sender and the receiver. For example, if it is determined that three connections can run stably based on the current connection state of the connection and the loop detection result, the number of loop detection failures of the first connection is 1, and the number of loop detection failures of the second connection is 2. If the number of loop detection failures of the third connection is 3, select the first connection with the least number of loop detection failures to establish remote assistance between the sender and the receiver.

Further, when selecting a connection that can run stably to establish remote assistance between the sender and the receiver, in addition to the above selection determination method, if there are multiple connections that can run stably, you can also refer to the last time the receiver The time of receiving the data packet, or the delay time RTT of each connection and other parameters, select the optimal connection to establish remote assistance between the sender and the receiver. For example, when the connection is in operation, if there are more than 5 PINGs that have not been replied yet, and the time interval has exceeded the average RTT, and among the PINGs that have not been replied, the earliest sent out time interval exceeds 5000ms, the connection will be The line switches to a working but unstable state. When the connection is in the running but unstable state or the initial state, if the time interval of the earliest sent PING exceeds 5000ms, the transmission will time out and the connection method of the connection will be destroyed.

After selecting the optimal connection to establish remote assistance between the sender and the receiver, if the network environment for remote assistance changes, for example, a new connection is generated in the network environment (a new connection is generated (candidate changes). )), the connection in the network environment is destroyed (connection is destroyed), the state of the connection in the network environment is changed (the connection state or receive state or write state of the connection changes), the receiver receives a remote detection signal (ICE_CONTROLLED end receives a remote ping) or the receiver receives a remote data packet (ICE_CONTROLLED end receives a remote data packet), etc., then re-select the connection between the initiator and the receiver to establish remote assistance.

To sum up, using the connection detection method for remote assistance of a mobile terminal provided by the embodiments of the present invention can provide a user with a connection channel that can ensure stable and fast signal transmission when the mobile terminal is assisted remotely. It avoids problems such as signal interruption and data packet loss, improves network stability, shortens data transmission time, ensures data accuracy, improves user experience, and provides users with great convenience.

Based on the same inventive concept, an embodiment of the present invention also provides a connection detection device for remote assistance of a mobile terminal. FIG. 7 shows a schematic block diagram of a connection detection apparatus for remote assistance of a mobile terminal according to an embodiment of the present invention. As shown in Figure 7, the connection detection device for remote assistance of the mobile terminal at least includes:

A connection request initiating module 710, adapted to initiate a connection request for remote assistance to the recipient of the remote assistance through the network;

The connection detection module 720, coupled to the connection request initiating module 710, is adapted to perform connection detection on multiple connections provided by multiple relay sites existing between the sender and the receiver, wherein each connection is as follows Probe: send out a probe signal through the connection; when the receiver's response message to the probe signal is received through the connection for the first time, switch the state of the connection to an active but unstable connection state; within a specified time , according to the signal detection response result of the connection to determine whether the connection can run stably;

The remote assistance establishment module 730, coupled with the connection detection module 720, is adapted to select a connection that can run stably to establish remote assistance between the sender and the receiver.

In a preferred embodiment, the connection detection module 720 is further adapted to:

When it is determined whether it can continue to receive the response message from the receiver within the specified time;

If so, modify the state of the connection to an operational state, and determine that the connection is in a stable operation state;

If not, it is determined that the connection has been interrupted.

In a preferred embodiment, the connection detection module 720 is further adapted to:

Perform loop detection on the connection within the specified time to obtain the loop detection result;

Combined with the current connection state of the connection and the loop detection result, it is further determined whether the connection can run stably.

In a preferred embodiment, the connection detection module 720 is further adapted to:

If the current connection status of the connection is running but unstable, and the cycle detection result is that the number of detection failures is not less than the preset threshold, it is determined that the connection can run stably;

If the current connection state of the connection is running, and the cycle detection result is that the number of detection failures is greater than the preset threshold, it is determined that the connection is switched to the connection state in operation but not stable.

In a preferred embodiment, the remote assistance establishing module 730 is further adapted to:

If it is determined that at least two connections can run stably based on the current connection state of the connection and the loop detection result, further compare the number of loop detection failures of each connection;

Select the connection with the least number of loop probe failures to establish remote assistance between sender and receiver.

In a preferred embodiment, the remote assistance establishing module 730 is further adapted to:

When there are multiple connections that can run stably, the optimal connection is determined by combining at least one of the following parameters: the last time the receiver received the data packet, and the delay time RTT of each connection;

Choose the optimal connection to establish remote assistance between sender and receiver.

In a preferred embodiment, the connection detection module 720 is further adapted to:

Using preset rules to select at least one connection for connection detection among multiple connections provided by multiple relay sites;

Perform connection detection on at least one selected connection;

The preset rules include at least one of the following:

The connection that has been selected before this connection;

Among the connections that are not running and have been successfully detected before, the connection that has not been detected for the longest time;

The connection that has not been probed for the longest time.

In a preferred embodiment, as shown in FIG. 8 , the connection detection device for remote assistance of the mobile terminal further includes:

The restarting module 740, coupled with the remote assistance establishing module 730, is adapted to re-select the connection between the initiator and the receiver to establish the remote assistance if the network environment of the remote assistance changes.

In a preferred embodiment, the network environment of the remote assistance in the restart module 740 changes, including at least one of the following:

A new connection is generated in the network environment;

The connection in the network environment is destroyed;

The status of the connection in the network environment is changed;

The receiver receives the remote detection signal;

The receiver receives the remote data packet.

In a preferred embodiment, the probe signal is an Internet probe.

In addition, an embodiment of the present invention also provides a mobile terminal, as shown in FIG. 9 , including a processor and a memory: the memory is used to store the connection for executing the remote assistance of the mobile terminal provided by any one of the above preferred embodiments or a combination thereof Procedures for detection methods;

The processor is configured to execute programs stored in the memory.

For the convenience of description, FIG. 9 only shows the part related to the embodiment of the present invention, and the specific technical details are not disclosed, please refer to the method part of the embodiment of the present invention. The mobile terminal may include any terminal equipment such as a mobile phone, a tablet computer, a PDA (Personal Digital Assistant, personal digital processing), a POS (Point of Sales, a sales terminal), a vehicle-mounted computer, etc. The terminal is a mobile phone as an example:

FIG. 9 is a block diagram showing a partial structure of a mobile phone related to a mobile terminal provided by an embodiment of the present invention. 9 , the mobile phone includes: a radio frequency (RF) circuit 910, a memory 920, an input unit 930, a display unit 940, a sensor 950, an audio circuit 960, a wireless fidelity (WiFi) module 970, a processor 980, And components such as power supply 990. Those skilled in the art can understand that the structure of the mobile phone shown in FIG. 9 does not constitute a limitation on the mobile phone, and may include more or less components than shown, or combine some components, or arrange different components.

Below in conjunction with Figure 9, each component of the mobile phone will be introduced in detail:

The RF circuit 910 can be used for receiving and sending signals during sending and receiving of information or during a call. In particular, after receiving the downlink information of the base station, it is processed by the processor 980; in addition, the designed uplink data is sent to the base station. Typically, the RF circuit 910 includes, but is not limited to, an antenna, at least one amplifier, a transceiver, a coupler, a Low Noise Amplifier (LNA), a duplexer, and the like. In addition, RF circuitry 910 may communicate with networks and other devices via wireless communications. The above-mentioned wireless communication can use any communication standard or protocol, including but not limited to Global System of Mobile communication (GSM), General Packet Radio Service (General Packet Radio Service, GPRS), Code Division Multiple Access (Code Division Multiple Access) , CDMA), Wideband Code Division Multiple Access (Wideband Code Division Multiple Access, WCDMA), Long Term Evolution (Long Term Evolution, LTE), email, Short Messaging Service (Short Messaging Service, SMS) and the like.

The memory 920 can be used to store software programs and modules, and the processor 980 executes various functional applications and data processing of the mobile phone by running the software programs and modules stored in the memory 920 . The memory 920 may mainly include a stored program area and a stored data area, wherein the stored program area may store an operating system, an application program required for at least one function (such as a sound playback function, an image playback function, etc.), etc.; Data created by the use of the mobile phone (such as audio data, phone book, etc.), etc. Additionally, memory 920 may include high-speed random access memory, and may also include non-volatile memory, such as at least one magnetic disk storage device, flash memory device, or other volatile solid state storage device.

The input unit 930 may be used to receive inputted numerical or character information, and generate key signal input related to user setting and function control of the mobile phone. Specifically, the input unit 930 may include a touch panel 931 and other input devices 932 . The touch panel 931, also referred to as a touch screen, can collect touch operations made by the user on or near it (such as the user's finger, stylus, etc., any suitable object or accessory on or near the touch panel 931). operation), and drive the corresponding connection device according to the preset program. Optionally, the touch panel 931 may include two parts, a touch detection device and a touch controller. Among them, the touch detection device detects the user's touch orientation, detects the signal brought by the touch operation, and transmits the signal to the touch controller; the touch controller receives the touch information from the touch detection device, converts it into contact coordinates, and then sends it to the touch controller. To the processor 980, and can receive the command sent by the processor 980 and execute it. In addition, the touch panel 931 can be implemented in various types such as resistive, capacitive, infrared, and surface acoustic waves. In addition to the touch panel 931 , the input unit 930 may further include other input devices 932 . Specifically, other input devices 932 may include, but are not limited to, one or more of physical keyboards, function keys (such as volume control keys, switch keys, etc.), trackballs, mice, joysticks, and the like.

The display unit 940 may be used to display information input by the user or information provided to the user and various menus of the mobile phone. The display unit 940 may include a display panel 941. Optionally, the display panel 941 may be configured in the form of a liquid crystal display (Liquid Crystal Display, LCD), an organic light-emitting diode (Organic Light-Emitting Diode, OLED), or the like. Further, the touch panel 931 can cover the display panel 941. When the touch panel 931 detects a touch operation on or near it, it transmits it to the processor 980 to determine the type of the touch event, and then the processor 980 determines the type of the touch event according to the touch event. Type provides corresponding visual output on display panel 941 . Although in FIG. 9, the touch panel 931 and the display panel 941 are used as two independent components to realize the input and input functions of the mobile phone, in some embodiments, the touch panel 931 and the display panel 941 can be integrated to form Realize the input and output functions of the mobile phone.

The cell phone may also include at least one sensor 950, such as a light sensor, a motion sensor, and other sensors. Specifically, the light sensor can include an ambient light sensor and a proximity sensor, wherein the ambient light sensor can adjust the brightness of the display panel 941 according to the brightness of the ambient light, and the proximity sensor can turn off the display panel 941 and/or when the mobile phone is moved to the ear. or backlight. As a kind of motion sensor, the accelerometer sensor can detect the magnitude of acceleration in all directions (usually three axes), and can detect the magnitude and direction of gravity when it is stationary. games, magnetometer attitude calibration), vibration recognition related functions (such as pedometer, tapping), etc.; as for other sensors such as gyroscope, barometer, hygrometer, thermometer, infrared sensor, etc. Repeat.

The audio circuit 960, the speaker 961, and the microphone 962 can provide an audio interface between the user and the mobile phone. The audio circuit 960 can convert the received audio data into an electrical signal, and transmit it to the speaker 961, and the speaker 961 converts it into a sound signal for output; on the other hand, the microphone 962 converts the collected sound signal into an electrical signal, which is converted by the audio circuit 960 After receiving, it is converted into audio data, and then the audio data is output to the processor 980 for processing, and then sent to, for example, another mobile phone through the RF circuit 910, or the audio data is output to the memory 920 for further processing.

WiFi is a short-distance wireless transmission technology. The mobile phone can help users to send and receive emails, browse web pages, and access streaming media through the WiFi module 970. It provides users with wireless broadband Internet access. Although FIG. 9 shows the WiFi module 970, it can be understood that it is not a necessary component of the mobile phone, and can be completely omitted as required within the scope of not changing the essence of the invention.

The processor 980 is the control center of the mobile phone, using various interfaces and lines to connect various parts of the entire mobile phone, by running or executing the software programs and/or modules stored in the memory 920, and calling the data stored in the memory 920. Various functions of the mobile phone and processing data, so as to monitor the mobile phone as a whole. Optionally, the processor 980 may include one or more processing units; preferably, the processor 980 may integrate an application processor and a modem processor, wherein the application processor mainly processes the operating system, user interface, and application programs, etc. , the modem processor mainly deals with wireless communication. It can be understood that, the above-mentioned modulation and demodulation processor may not be integrated into the processor 980.

The mobile phone also includes a power supply 990 (such as a battery) for supplying power to various components. Preferably, the power supply can be logically connected to the processor 980 through a power management system, so as to manage charging, discharging, and power consumption management functions through the power management system.

Although not shown, the mobile phone may also include a camera, a Bluetooth module, and the like, which will not be repeated here.

Using the connection detection method and device for remote assistance of a mobile terminal provided by the embodiments of the present invention can achieve the following beneficial effects:

In the embodiment of the present invention, in order to solve the problem that the network signal is unstable during the remote assistance of the mobile terminal during the remote assistance of the mobile terminal due to the different operators that the user's mobile terminal belongs to, or the different networks used by the user when they belong to the same operator And the problem of frequent data packet loss, a connection detection method for remote assistance of mobile terminals is proposed. The implementation of the method can provide a high-quality transmission channel for the user when the mobile terminal performs remote assistance, so as to meet the purpose of achieving complete, stable and fast data transmission, and at the same time, it can improve the security performance of the network, ensure the accuracy of the data, and improve the user experience. Specifically, the connection between the remote assistance of the mobile terminal is detected. First, the initiator of the remote assistance can initiate a connection request for the remote assistance to the receiver of the remote assistance through the network, and the receiver of the remote assistance receives the connection. After receiving the requested signal, it responds to the signal, indicating that the transmission channel between the two is connected. After receiving the response, the sender of the remote assistance can establish a connection on the transmission channel and perform corresponding data transmission. However, there are multiple connection channels between the sender and receiver of remote assistance. In order to ensure the stability of the signal and the accuracy of the data, the multiple connection channels provided by the multiple relay sites between the sender and the receiver can be Line detection is performed to find the channel with the most stable transmission signal and the fastest transmission speed. When detecting each specific connection, a detection signal can be sent through the connection, and the receiver of the connection will respond after receiving the detection signal. After it is determined that the connection is connected, the connection detection method for remote assistance of a mobile terminal provided in this embodiment switches the state of the connection to an active but unstable connection state, instead of determining the connection After connecting, switch the connection state to running directly. This transition of state switching prevents the previously determined stable state from becoming unstable when the detection signal is subsequently interrupted or other problems cause the connection to be interrupted, which further improves the transmission stability. When the connection is in the running but unstable connection state, it can be determined whether the connection can run stably according to the signal detection response result of the connection within a specified time, which provides an optimal connection for selecting an optimal connection. important foundation. Finally, according to the detection results, select a connection that can run stably to establish remote assistance between the sender and the receiver. It can be seen that, by using the method provided by the embodiment of the present invention, a connection channel with stable and fast signal transmission can be provided for the user when the mobile terminal is assisted remotely. It avoids problems such as signal interruption and data packet loss, improves network stability, shortens data transmission time, ensures data accuracy, improves user experience, and provides users with great convenience.

In the description provided herein, numerous specific details are set forth. It will be understood, however, that embodiments of the invention may be practiced without these specific details. In some instances, well-known methods, structures and techniques have not been shown in detail in order not to obscure an understanding of this description.

Similarly, it is to be understood that in the above description of exemplary embodiments of the invention, various features of the invention are sometimes grouped together into a single embodiment, figure, or its description. This disclosure, however, should not be construed as reflecting an intention that the invention as claimed requires more features than are expressly recited in each claim. Rather, as the following claims reflect, inventive aspects lie in less than all features of a single foregoing disclosed embodiment. Thus, the claims following the Detailed Description are hereby expressly incorporated into this Detailed Description, with each claim standing on its own as a separate embodiment of this invention.

Those skilled in the art will understand that the modules in the device in the embodiment can be adaptively changed and arranged in one or more devices different from the embodiment. The modules or units or components in the embodiments may be combined into one module or unit or component, and further they may be divided into multiple sub-modules or sub-units or sub-assemblies. All features disclosed in this specification (including accompanying claims, abstract and drawings) and any method so disclosed may be employed in any combination, unless at least some of such features and/or procedures or elements are mutually exclusive. All processes or units of equipment are combined. Each feature disclosed in this specification (including accompanying claims, abstract and drawings) may be replaced by alternative features serving the same, equivalent or similar purpose, unless expressly stated otherwise.

Furthermore, those skilled in the art will appreciate that although some of the embodiments described herein include certain features, but not others, included in other embodiments, that combinations of features of different embodiments are intended to be within the scope of the invention within and form different embodiments. For example, in the claims, any of the claimed embodiments may be used in any combination.

Various component embodiments of the present invention may be implemented in hardware, or in software modules running on one or more processors, or in a combination thereof. Those skilled in the art should understand that a microprocessor or a digital signal processor (DSP) may be used in practice to implement some or all of some or all of the components in the connection detection device for remote assistance of the mobile terminal according to the embodiment of the present invention. Full functionality. The present invention can also be implemented as apparatus or apparatus programs (eg, computer programs and computer program products) for performing part or all of the methods described herein. Such a program implementing the present invention may be stored on a computer-readable medium, or may be in the form of one or more signals. Such signals may be downloaded from Internet sites, or provided on carrier signals, or in any other form.

It should be noted that the above-described embodiments illustrate rather than limit the invention, and that alternative embodiments may be devised by those skilled in the art without departing from the scope of the appended claims. In the claims, any reference signs placed between parentheses shall not be construed as limiting the claim. The word "comprising" does not exclude the presence of elements or steps not listed in a claim. The word "a" or "an" preceding an element does not exclude the presence of a plurality of such elements. The invention can be implemented by means of hardware comprising several different elements and by means of a suitably programmed computer. In a unit claim enumerating several means, several of these means may be embodied by one and the same item of hardware. The use of the words first, second, and third, etc. do not denote any order. These words can be interpreted as names.

By now, those skilled in the art will recognize that, although various exemplary embodiments of the present invention have been illustrated and described in detail herein, the present invention may still be implemented in accordance with the present disclosure without departing from the spirit and scope of the present invention. The content directly determines or derives many other variations or modifications consistent with the principles of the invention. Accordingly, the scope of the present invention should be understood and deemed to cover all such other variations or modifications.

Claims (15)

1. A connection detection method for remote assistance of a mobile terminal, applied to a sender of remote assistance, comprising: Initiate a remote assistance connection request to the remote assistance recipient through the network; Perform connection detection on multiple connections provided by multiple relay sites existing between the sender and the receiver, where each connection is detected according to the following steps: Send out a probe signal through the connection; when the receiver's response message to the probe signal is received for the first time through the connection, switch the state of the connection to an active but unstable connection state; at a specified time Inside, determine whether the connection can run stably according to the signal detection response result of the connection; Selecting a connection that can operate stably to establish remote assistance between the sender and the receiver; Wherein, within the specified time, it is determined whether the connection can run stably according to the signal detection response result of the connection, including: Within the specified time, determine whether the response message from the receiver can continue to be received; if so, modify the state of the connection to an operable state, and determine that the connection is in a stable operation state; if not, then determine that the connection has been disconnected; Perform loop detection on the connection within the specified time to obtain a cycle detection result; further determine whether the connection can run stably by combining the current connection state of the connection and the cycle detection result; Wherein, the method further includes: if the network environment of the remote assistance changes, re-selecting a connection between the sender and the receiver to establish the remote assistance. 2. The method according to claim 1, wherein, further determining whether the connection can run stably by combining the current connection state of the connection and the loop detection result, comprising: If the current connection state of the connection is in operation but unstable, and the cycle detection result is that the number of detection failures is not greater than the preset threshold, it is determined that the connection can run stably; If the current connection state of the connection is running, and the cycle detection result is that the number of detection failures is greater than the preset threshold, it is determined that the connection is switched to the running but unstable connection state. 3. The method according to claim 1 or 2, wherein if it is determined that at least two connections can run stably based on the current connection state of the connection and the loop detection result, the connection that can run stably is selected to be Establishing remote assistance between the sender and the receiver further includes: Further compare the number of loop detection failures of each connection; The connection with the least number of failed round-robin probes is selected to establish remote assistance between the sender and the receiver. 4. The method according to claim 1 or 2, wherein selecting a connection capable of stable operation to establish remote assistance between the sender and the receiver, further comprising: When there are multiple connections that can run stably, the optimal connection is determined in combination with at least one of the following parameters: the last time the receiver received the data packet, and the delay time RTT of each connection; Selecting the optimal connection establishes remote assistance between the sender and the receiver. 5. The method according to claim 1 or 2, wherein, performing connection detection on multiple connections provided by multiple relay sites existing between the sender and the receiver, further comprising: Selecting at least one connection for connection detection among the multiple connections provided by the multiple relay sites by using a preset rule; Perform connection detection on at least one selected connection; Wherein, the preset rules include at least one of the following: The connection that has been selected before this connection; Among the connections that are not running and have been successfully detected before, the connection that has not been detected for the longest time; The connection that has not been probed for the longest time. 6. The method according to claim 1, wherein the network environment of the remote assistance changes, including at least one of the following: A new connection is generated in the network environment; A connection in the network environment is destroyed; The state of the connection in the network environment is changed; the receiver receives a remote detection signal; The receiving end receives the remote data packet. 7. The method of claim 1 or 2, wherein the probe signal is an internet probe PING. 8. A connection detection device for remote assistance of a mobile terminal, applied to a sender of remote assistance, comprising: The connection request initiating module is suitable for initiating a connection request for remote assistance to the recipient of the remote assistance through the network; The connection detection module is adapted to perform connection detection on multiple connections provided by multiple relay sites existing between the sender and the receiver, wherein each connection is detected according to the following steps: detection signal; when the receiver's response message to the detection signal is received through the connection for the first time, the state of the connection is switched to an operating but unstable connection state; within a specified time, according to the connection The signal detection response result of the line determines whether the connection can operate stably; a remote assistance establishment module, adapted to select a connection that can run stably to establish remote assistance between the sender and the receiver; Wherein, the connection detection module is also suitable for: When determining whether the response message from the receiver can continue to be received within the specified time; if so, modify the state of the connection to an operable state, and determine that the connection is in a stable operation state; if not, then it is determined that the connection has been interrupted; Perform loop detection on the connection within the specified time to obtain a cycle detection result; further determine whether the connection can run stably by combining the current connection state of the connection and the cycle detection result; Wherein, the apparatus further includes: a restarting module, adapted to re-select a connection between the sender and the receiver to establish the remote assistance if the network environment of the remote assistance changes. 9. The apparatus of claim 8, wherein the link detection module is further adapted to: If the current connection status of the connection is in operation but unstable, and the cycle detection result is that the number of detection failures is not less than the preset threshold, it is determined that the connection can run stably; If the current connection state of the connection is running, and the cycle detection result is that the number of detection failures is greater than the preset threshold, it is determined that the connection is switched to the running but unstable connection state. 10. The apparatus of claim 8 or 9, wherein the remote assistance establishment module is further adapted to: If it is determined that at least two connections can run stably in combination with the current connection state of the connection and the cycle detection result, further compare the number of times that the cycle detection fails for each connection; The connection with the least number of failed round-robin probes is selected to establish remote assistance between the sender and the receiver. 11. The apparatus of claim 8 or 9, wherein the remote assistance establishment module is further adapted to: When there are multiple connections that can run stably, the optimal connection is determined in combination with at least one of the following parameters: the last time the receiver received the data packet, and the delay time RTT of each connection; Selecting the optimal connection establishes remote assistance between the sender and the receiver. 12. The apparatus according to claim 8 or 9, wherein the connection detection module is further adapted to: Selecting at least one connection for connection detection among the multiple connections provided by the multiple relay sites by using a preset rule; Perform connection detection on at least one selected connection; Wherein, the preset rule includes at least one of the following: The connection that has been selected before this connection; Among the connections that are not running and have been successfully detected before, the connection that has not been detected for the longest time; The connection that has not been probed for the longest time. 13. The apparatus according to claim 8, wherein the network environment of the remote assistance in the restarting module changes, including at least one of the following: A new connection is generated in the network environment; A connection in the network environment is destroyed; The state of the connection in the network environment is changed; The receiver receives a remote detection signal; The receiving end receives the remote data packet. 14. The apparatus of claim 8 or 9, wherein the probe signal is an internet probe PING. 15. A mobile terminal comprising a processor and a memory: The memory is used to store a program for executing the method of any one of claims 1 to 7; The processor is configured to execute programs stored in the memory.

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