CN103987076A - Network switchover method and system based on TD-LTE internet protocol camera - Google Patents

Abstract

The invention relates to a network switchover method and system based on a TD-LTE internet protocol camera. The network switchover method comprises the steps that the TD-LTE internet protocol camera selects a default network after being started; the TD-LTE internet protocol camera detects the state of the network in real time, extracts and uses the delay tau and the packet loss probability upsilon when the default network carries out video transmission, preprocesses the delay tau and the packet loss probability upsilon and calculates the network quality (please see the formula in the specification), wherein Qos is the network quality, and a is a preset user preference value; whether the Qos of the default network is smaller than a preset threshold value is judged, if yes, the TD-LTE internet protocol camera is automatically switched to a standby network, and if not, the TD-LTE internet protocol camera continues working under the default network. According to the network switchover method and system based on the TD-LTE internet protocol camera, the default network is selected according to the preference of the user, and the TD-LTE internet protocol camera selects the default network after being started, and detects the network state in real time. As the TD-LTE internet protocol camera intelligently selects the network according to an analysis value, the convenience of deploying the TD-LTE internet protocol camera on various occasions is largely improved.

Description

A kind of method for switching network and system based on TD-LTE web camera

Technical field

The present invention relates to network and switch field, more specifically, relate to a kind of method for switching network and system based on TD-LTE web camera.

Background technology

Development along with radio network technique, wireless transmission bandwidth progressively promotes, wireless technology based on TD-LTE can meet the demand of transmission HD video data flow, but the absolutely large many parts of existing TD-LTE HD video application system integrated a kind of network connecting mode only in front-end camera, even if integrated multiple network connecting mode also cannot intelligence carry out network switching, this has greatly limited the convenience of TD-LTE web camera application.

In addition, existing network handoff algorithms is to switch and launch for the switching/base station, community of UMTS network mostly, also exist sub-fraction algorithm to carry out for Network Load Balance or Qos, but the TD-LTE web camera how to apply for wireless high-definition video carries out network switching, does not also have research in prior art.

Summary of the invention

The present invention is at least one defect (deficiency) overcoming described in above-mentioned prior art, and a kind of method for switching network based on TD-LTE web camera that makes web camera possess intelligent selection network connecting mode function is provided.

The present invention also provides a kind of network switched system based on TD-LTE web camera that makes web camera possess intelligent selection network connecting mode function.

For solving the problems of the technologies described above, technical scheme of the present invention is as follows:

A method for switching network based on TD-LTE web camera, comprising:

After starting, TD-LTE web camera selects default network;

TD-LTE web camera detecting real-time network state, time delay τ and packet loss μ when extracting it and utilizing default network to carry out transmission of video;

Time delay τ and packet loss μ are carried out to preliminary treatment real-time computing network quality:

${\mathrm{\τ}}_{*}=\left\{\begin{array}{cc}\∞& \mathrm{\τ}>400\mathrm{ms}\\ 10+e^{\mathrm{\τ}/50}& \mathrm{\τ}\≤400\mathrm{ms}\end{array}\right.,$

${\mathrm{\μ}}_{*}=\left\{\begin{array}{cc}1& \mathrm{\μ}>0.1\\ \mathrm{\μ}& \mathrm{\μ}\≤0.1\end{array}\right.,$

$\mathrm{Qos}=\frac{12a(1-{\mathrm{\μ}}_{*})}{{\mathrm{\τ}}_{*}},$

Wherein, Qos is network quality, and a is default user preference value;

Whether the Qos that judges default network is less than predetermined threshold value, if TD-LTE web camera automatically switches to backup network, otherwise continues to operate under default network.

In the method for the invention, according to user preference, select default network in advance, after starting, TD-LTE web camera automatically select default network to carry out the transmission of video data, start also detecting real-time network state of rear TD-LTE web camera, network state is analyzed, by TD-LTE web camera, according to assay value Intelligent network-selecting, greatly promoted the convenience that TD-LTE web camera is disposed in various scenes.

In a kind of preferred scheme, described method also comprises:

Be switched to after backup network, TD-LTE web camera continues the state of detecting real-time default network and backup network;

According to the state of default network and backup network, contrast:

When backup network is working properly and be better than default network, TD-LTE web camera continues to operate under backup network;

When default network recovers and default network is better than backup network, TD-LTE web camera automatically switches to default network;

When default network and backup network are all in extremely, TD-LTE web camera sends Network Abnormal and reports to the police, prompting user check network and/equipment.

In a kind of preferred scheme, the detailed process contrasting according to the state of default network and backup network is:

TD-LTE web camera calculates the network quality of backup network and default network in real time;

When backup network is normal and the network quality of backup network is greater than the network quality of default network, judge that backup network is better than default network;

When the network quality of default network is greater than predetermined threshold value, judge that default network recovers and judge that default network is better than backup network when the network quality of default network is greater than the network quality of backup network;

When being all less than predetermined threshold value, the network quality of default network and backup network judges that default network and backup network are all in extremely.

In a kind of preferred scheme, described default network is TD-LTE network.

In a kind of preferred scheme, described backup network is cable network or WIFI network.

A network switched system based on TD-LTE web camera, comprising:

Default network is selected module, after starting, selects default network for TD-LTE web camera;

Detecting real-time module, for TD-LTE web camera detecting real-time network state, time delay τ and packet loss μ when extraction TD-LTE web camera utilizes default network to carry out transmission of video, carry out preliminary treatment real-time computing network quality to the time delay τ extracting and packet loss μ:

${\mathrm{\τ}}_{*}=\left\{\begin{array}{cc}\∞& \mathrm{\τ}>400\mathrm{ms}\\ 10+e^{\mathrm{\τ}/50}& \mathrm{\τ}\≤400\mathrm{ms}\end{array}\right.,$

${\mathrm{\μ}}_{*}=\left\{\begin{array}{cc}1& \mathrm{\μ}>0.1\\ \mathrm{\μ}& \mathrm{\μ}\≤0.1\end{array}\right.,$

$\mathrm{Qos}=\frac{12a(1-{\mathrm{\μ}}_{*})}{{\mathrm{\τ}}_{*}},$

Wherein, Qos is network quality, and a is default user preference value;

Handover module, for judging that whether the Qos of default network is less than predetermined threshold value, if TD-LTE web camera is automatically switched to backup network, otherwise continues to operate under default network.

In a kind of preferred scheme, detecting real-time module, also for being switched to after backup network at TD-LTE web camera, continues the state of detecting real-time default network and backup network;

Handover module also contrasts according to the state of default network and backup network after being switched to backup network at TD-LTE web camera:

When backup network is working properly and be better than default network, TD-LTE web camera continues to operate under backup network;

When default network recovers and default network is better than backup network, TD-LTE web camera is automatically switched to default network;

When default network and backup network are all in extremely, TD-LTE web camera sends Network Abnormal and reports to the police, prompting user check network and/equipment.

In a kind of preferred scheme, the detailed process that handover module contrasts according to the state of default network and backup network is:

Detecting real-time module is calculated the network quality of backup network and default network in real time;

Handover module is sentenced ratio according to the backup network calculating in real time and the network quality of default network:

When backup network is normal and the network quality of backup network is greater than the network quality of default network, judge that backup network is better than default network;

When the network quality of default network is greater than predetermined threshold value, judge that default network recovers and judge that default network is better than backup network when the network quality of default network is greater than the network quality of backup network;

When being all less than predetermined threshold value, the network quality of default network and backup network judges that default network and backup network are all in extremely.

In a kind of preferred scheme, described default network is TD-LTE network.

In a kind of preferred scheme, described backup network is cable network or WIFI network.

Compared with prior art, the beneficial effect of technical solution of the present invention is:

(1) in the present invention, according to user preference, select default network in advance, after starting, TD-LTE web camera automatically select default network to carry out the transmission of video data, start also detecting real-time network state of rear TD-LTE web camera, network state is analyzed, by TD-LTE web camera according to assay value Intelligent network-selecting, make TD-LTE web camera possess intellectual analysis ability, can in default network and backup network, intelligence switch, guaranteed that the video data in TD-LTE web camera can transfer out in time, guaranteed the real-time of the wireless high-definition video supervisory control system monitoring based on TD-LTE web camera, greatly promoted the convenience that TD-LTE web camera is disposed in various scenes.

(2) the present invention utilizes network quality Qos as the intellectual analysis value of TD-LTE web camera, and has proposed according to formula carry out computing network quality, the network quality calculating according to this formula can be judged the state of current network more accurately, this network quality and the predetermined threshold value arranging by priori are combined to judge to the quality of network, and then make TD-LTE web camera carry out in time network switching, guarantee the real-time of transfer of data.

(3) the present invention is according in practical application, the acceptable degree of time delay τ and packet loss μ being carried out to preliminary treatment to time delay τ and packet loss μ, make the calculating of network quality not only can be based on real-time detected value, also practical application is considered, made the network switching of TD-LTE web camera of the present invention have more practicality.

(4) TD-LTE web camera of the present invention is chosen default network by user preference, then according to network state, carrying out internetwork intelligence switches, make the present invention combine user preference and network state analysis two large factors, both catered to user's user demand, can carry out transmission of video in conjunction with real network situation again, flexibility is large.

(5) the present invention is after being switched to backup network, also in real time network state is detected, by the quality between contrast backup network and default network, carrying out intelligence switches, when being better than backup network, default network switches back on the one hand default network, user's user demand can either be catered to and better video data transmitting can be carried out again, in the situation that backup network and default network are all good, also by TD-LTE web camera, do not send abnormal alarm on the other hand, real-time reminding user network abnormal

Accompanying drawing explanation

Fig. 1 is the flow chart of a kind of method for switching network specific embodiment based on TD-LTE web camera of the present invention.

Fig. 2 is the Organization Chart of a kind of network switched system specific embodiment based on TD-LTE web camera of the present invention.

Embodiment

Accompanying drawing, only for exemplary illustration, can not be interpreted as the restriction to this patent;

For better explanation the present embodiment, some parts of accompanying drawing have omission, zoom in or out, and do not represent the size of actual product;

To those skilled in the art, in accompanying drawing some known configurations and explanation thereof may to omit be understandable.

In description of the invention, it should be noted that, unless otherwise clearly defined and limited, term " installation ", " connection " should be interpreted broadly, and for example, can be to be fixedly connected with, and can be also to removably connect, or connect integratedly; Can be mechanical connection, can be to be also electrically connected to; Can be to be directly connected, can be also indirectly to connect by intermediary, can say the connection of two element internals.For the ordinary skill in the art, can concrete condition understand above-mentioned term at concrete meaning of the present invention.

Below in conjunction with drawings and Examples, technical scheme of the present invention is described further.

Embodiment 1

As shown in Figure 1, be the flow chart of a kind of method for switching network specific embodiment based on TD-LTE web camera of the present invention.Referring to Fig. 1, the concrete steps of a kind of method for switching network based on TD-LTE web camera of this specific embodiment comprise:

After starting, S101.TD-LTE web camera selects default network; Usually, integrated multiple network connected mode in TD-LTE web camera, generally include TD-LTE network, cable network, WIFI etc., default network chooses in advance according to user preference, when a kind of network is wherein chosen as default network, can from remaining network, select again a kind ofly as backup network, for TD-LTE web camera, to carry out network switching.For default network, if user is set to TD-LTE network, first TD-LTE network shooting machine testing has or not SIM card, if report to the police without sending without SIM card, after SIM card is inserted in prompting user power-off, restarts; If default network is cable network, first detect and have or not connected with network cable, if nothing is sent without cable network and connected alarm, prompting user inserts netting twine.

S102.TD-LTE web camera detecting real-time network state, time delay τ and packet loss μ when extracting it and utilizing default network to carry out transmission of video;

S103. time delay τ and packet loss μ are carried out to preliminary treatment real-time computing network quality:

${\mathrm{\τ}}_{*}=\left\{\begin{array}{cc}\∞& \mathrm{\τ}>400\mathrm{ms}\\ 10+e^{\mathrm{\τ}/50}& \mathrm{\τ}\≤400\mathrm{ms}\end{array}\right.,$

${\mathrm{\μ}}_{*}=\left\{\begin{array}{cc}1& \mathrm{\μ}>0.1\\ \mathrm{\μ}& \mathrm{\μ}\≤0.1\end{array}\right.,$

$\mathrm{Qos}=\frac{12a(1-{\mathrm{\μ}}_{*})}{{\mathrm{\τ}}_{*}},$

Wherein, Qos is network quality, and a is default user preference value, and generally the span of a is any one number in 0-0.9;

In this process, for HD video application system, generally, the end-to-end time delay of speech packet is considered to unacceptable while being greater than 400ms, and network packet loss rate is while being greater than 10%, it is unacceptable that the voice quality of Video Applications system can become, therefore, in step S103, when computing network quality, first time delay τ and packet loss μ are carried out to preliminary treatment, make the time delay and the packet loss that extract more can embody actual application system.

Whether the Qos that S104. judges default network is less than predetermined threshold value, if show that default network operating state is not good, TD-LTE web camera automatically switches to backup network, otherwise show that default network is normal, TD-LTE web camera continues to operate under default network and continues detecting network state.Predetermined threshold value draws in conjunction with actual measurement by theory analysis, and generally, this predetermined threshold value is set to 0.7-0.9 for best, is preferably 0.8.

In specific implementation process, in order to cater to user's preference and to be switched in time in best network, make TD-LTE web camera carry out better video data transmitting, TD-LTE web camera is also carried out following steps:

S105. be switched to after backup network, TD-LTE web camera continues the state of detecting real-time default network and backup network; In this step, TD-LTE web camera is not only detected the network state of backup network, also default network is carried out to network detecting, in order to switching back in real time in default network, TD-LTE web camera can be worked under optimum network.

S106. according to the state of default network and backup network, contrast:

When backup network is working properly and be better than default network, TD-LTE web camera continues to operate under backup network;

When default network recovers and default network is better than backup network, TD-LTE web camera automatically switches to default network;

When default network and backup network are all in extremely, TD-LTE web camera sends Network Abnormal and reports to the police, prompting user check network and/equipment.

In step S106, according to the state of default network and backup network, contrast and can judge by the size of network quality, detailed process is:

TD-LTE web camera calculates the network quality of backup network and default network in real time, and wherein, the network quality of backup network and default network all can adopt formula calculate;

When backup network is normal and the network quality of backup network is greater than the network quality of default network, judge that backup network is better than default network;

When the network quality of default network is greater than predetermined threshold value, judge that default network recovers and judge that default network is better than backup network when the network quality of default network is greater than the network quality of backup network;

When the network quality of default network and backup network is all less than predetermined threshold value, judge that default network and backup network are all in extremely, now TD-LTE web camera sends Network Abnormal and reports to the police in order to point out user to carry out the inspection of network and/or equipment.

Embodiment 2

On the basis of the method for switching network 1 one kinds of embodiment based on TD-LTE web camera, the present invention also provides a kind of network switched system based on TD-LTE web camera.Referring to Fig. 2, a kind of network switched system specific embodiment based on TD-LTE web camera of the present invention comprises:

Default network is selected module 201, after starting, selects default network for TD-LTE web camera; Usually, integrated multiple network connected mode in TD-LTE web camera, generally include TD-LTE network, cable network, WIFI etc., default network is that default network selects module 201 to choose in advance according to user preference, when a kind of network is wherein chosen as default network, default network selects module 201 can from remaining network, select a kind ofly as backup network, for TD-LTE web camera, to carry out network switching again.For default network, if user is set to TD-LTE network, after TD-LTE web camera starts, default network selects module 201 first to detect and have or not SIM card, if report to the police without sending without SIM card, after SIM card is inserted in prompting user power-off, restarts; If default network is cable network, first detect and have or not connected with network cable, if nothing is sent without cable network and connected alarm, prompting user inserts netting twine.

Detecting real-time module 202, for TD-LTE web camera detecting real-time network state, time delay τ and packet loss μ when extraction TD-LTE web camera utilizes default network to carry out transmission of video, carry out preliminary treatment real-time computing network quality to the time delay τ extracting and packet loss μ:

${\mathrm{\τ}}_{*}=\left\{\begin{array}{cc}\∞& \mathrm{\τ}>400\mathrm{ms}\\ 10+e^{\mathrm{\τ}/50}& \mathrm{\τ}\≤400\mathrm{ms}\end{array}\right.,$

${\mathrm{\μ}}_{*}=\left\{\begin{array}{cc}1& \mathrm{\μ}>0.1\\ \mathrm{\μ}& \mathrm{\μ}\≤0.1\end{array}\right.,$

$\mathrm{Qos}=\frac{12a(1-{\mathrm{\μ}}_{*})}{{\mathrm{\τ}}_{*}},$

Wherein, Qos is network quality, and a is default user preference value, and generally the span of a is any one number in 0-0.9;

In concrete application, for HD video application system, generally, the end-to-end time delay of speech packet is considered to unacceptable while being greater than 400ms, and network packet loss rate is while being greater than 10%, it is unacceptable that the voice quality of Video Applications system can become, therefore, detecting real-time module 202 is also carried out preliminary treatment to time delay τ and packet loss μ when computing network quality, makes the time delay and the packet loss that extract more can embody actual application system.

Handover module 203, for judging whether the Qos of default network is less than predetermined threshold value, if show that default network operating state is not good, TD-LTE web camera is automatically switched to backup network, otherwise show that default network is normal, make TD-LTE web camera continue to operate under default network and continue detecting network state.Predetermined threshold value draws in conjunction with actual measurement by theory analysis, and generally, this predetermined threshold value is set to 0.7-0.9 for best, is preferably 0.8.

In specific implementation process, in order to cater to user's preference and to be switched in time in best network, make TD-LTE web camera carry out better video data transmitting, detecting real-time module 202, also for being switched to after backup network at TD-LTE web camera, continues the state of detecting real-time default network and backup network; Now, detecting real-time module 202 is not only detected the network state of backup network, also default network is carried out to network state detecting, in order to switching back in real time in default network, TD-LTE web camera can be worked under optimum network.

In this simultaneously, handover module 203 also contrasts according to the state of default network and backup network after being switched to backup network at TD-LTE web camera:

When backup network is working properly and be better than default network, handover module 203 is not carried out handover operation continues to operate under backup network TD-LTE web camera;

When default network recovers and default network is better than backup network, TD-LTE web camera is automatically switched under default network and worked;

When default network and backup network are all in extremely, TD-LTE web camera sends Network Abnormal and reports to the police, prompting user check network and/equipment.

Now, handover module 203 can utilize detecting real-time module 202 to calculate the network quality of backup network and default network, according to network quality, compares, and is specially:

Detecting real-time module 202 is calculated the network quality of backup network and default network in real time, and wherein, the network quality of backup network and default network all can adopt formula calculate;

Handover module 203 is sentenced ratio according to the backup network calculating in real time and the network quality of default network:

When backup network is normal and the network quality of backup network is greater than the network quality of default network, judge that backup network is better than default network;

When the network quality of default network is greater than predetermined threshold value, judge that default network recovers and judge that default network is better than backup network when the network quality of default network is greater than the network quality of backup network;

When being all less than predetermined threshold value, the network quality of default network and backup network judges that default network and backup network are all in extremely.

In above-mentioned system, default network selects module 201, detecting real-time module 202 and handover module 203 to be directly integrated in TD-LTE web camera, makes TD-LTE web camera possess the function that intelligence is switched.

The corresponding same or analogous parts of same or analogous label;

In accompanying drawing, describe position relationship for only for exemplary illustration, can not be interpreted as the restriction to this patent;

Obviously, the above embodiment of the present invention is only for example of the present invention is clearly described, and is not the restriction to embodiments of the present invention.For those of ordinary skill in the field, can also make other changes in different forms on the basis of the above description.Here exhaustive without also giving all execution modes.All any modifications of doing within the spirit and principles in the present invention, be equal to and replace and improvement etc., within all should being included in the protection range of the claims in the present invention.

Claims (10)

1. the method for switching network based on TD-LTE web camera, is characterized in that, comprising:

After starting, TD-LTE web camera selects default network;

TD-LTE web camera detecting real-time network state, time delay τ and packet loss μ when extracting it and utilizing default network to carry out transmission of video;

Time delay τ and packet loss μ are carried out to preliminary treatment real-time computing network quality:

${\mathrm{\τ}}_{*}=\left\{\begin{array}{cc}\∞& \mathrm{\τ}>400\mathrm{ms}\\ 10+e^{\mathrm{\τ}/50}& \mathrm{\τ}\≤400\mathrm{ms}\end{array}\right.,$

${\mathrm{\μ}}_{*}=\left\{\begin{array}{cc}1& \mathrm{\μ}>0.1\\ \mathrm{\μ}& \mathrm{\μ}\≤0.1\end{array}\right.,$

$\mathrm{Qos}=\frac{12a(1-{\mathrm{\μ}}_{*})}{{\mathrm{\τ}}_{*}},$

Wherein, Qos is network quality, and a is default user preference value;

Whether the Qos that judges default network is less than predetermined threshold value, if TD-LTE web camera automatically switches to backup network, otherwise continues to operate under default network.

2. the method for switching network based on TD-LTE web camera according to claim 1, is characterized in that, described method also comprises:

Be switched to after backup network, TD-LTE web camera continues the state of detecting real-time default network and backup network;

According to the state of default network and backup network, contrast:

When backup network is working properly and be better than default network, TD-LTE web camera continues to operate under backup network;

When default network recovers and default network is better than backup network, TD-LTE web camera automatically switches to default network;

When default network and backup network are all in extremely, TD-LTE web camera sends Network Abnormal and reports to the police, prompting user check network and/equipment.

3. the method for switching network based on TD-LTE web camera according to claim 1, is characterized in that, the detailed process contrasting according to the state of default network and backup network is:

TD-LTE web camera calculates the network quality of backup network and default network in real time;

When backup network is normal and the network quality of backup network is greater than the network quality of default network, judge that backup network is better than default network;

When the network quality of default network is greater than predetermined threshold value, judge that default network recovers and judge that default network is better than backup network when the network quality of default network is greater than the network quality of backup network;

When being all less than predetermined threshold value, the network quality of default network and backup network judges that default network and backup network are all in extremely.

4. the method for switching network based on TD-LTE web camera according to claim 1, described default network is TD-LTE network.

5. according to the method for switching network based on TD-LTE web camera described in claim 1 to 4 any one, it is characterized in that, described backup network is cable network or WIFI network.

6. the network switched system based on TD-LTE web camera, is characterized in that, comprising:

Default network is selected module, after starting, selects default network for TD-LTE web camera;

Detecting real-time module, for TD-LTE web camera detecting real-time network state, time delay τ and packet loss μ when extraction TD-LTE web camera utilizes default network to carry out transmission of video, carry out preliminary treatment real-time computing network quality to the time delay τ extracting and packet loss μ:

${\mathrm{\τ}}_{*}=\left\{\begin{array}{cc}\∞& \mathrm{\τ}>400\mathrm{ms}\\ 10+e^{\mathrm{\τ}/50}& \mathrm{\τ}\≤400\mathrm{ms}\end{array}\right.,$

${\mathrm{\μ}}_{*}=\left\{\begin{array}{cc}1& \mathrm{\μ}>0.1\\ \mathrm{\μ}& \mathrm{\μ}\≤0.1\end{array}\right.,$

$\mathrm{Qos}=\frac{12a(1-{\mathrm{\μ}}_{*})}{{\mathrm{\τ}}_{*}},$

Wherein, Qos is network quality, and a is default user preference value;

Handover module, for judging that whether the Qos of default network is less than predetermined threshold value, if TD-LTE web camera is automatically switched to backup network, otherwise continues to operate under default network.

7. the network switched system based on TD-LTE web camera according to claim 6, is characterized in that, detecting real-time module, also for being switched to after backup network at TD-LTE web camera, continues the state of detecting real-time default network and backup network;

Handover module also contrasts according to the state of default network and backup network after being switched to backup network at TD-LTE web camera:

When backup network is working properly and be better than default network, TD-LTE web camera continues to operate under backup network;

When default network recovers and default network is better than backup network, TD-LTE web camera is automatically switched to default network;

When default network and backup network are all in extremely, TD-LTE web camera sends Network Abnormal and reports to the police, prompting user check network and/equipment.

8. the method for switching network based on TD-LTE web camera according to claim 6, is characterized in that, the detailed process that handover module contrasts according to the state of default network and backup network is:

Detecting real-time module is calculated the network quality of backup network and default network in real time;

Handover module is sentenced ratio according to the backup network calculating in real time and the network quality of default network:

When backup network is normal and the network quality of backup network is greater than the network quality of default network, judge that backup network is better than default network;

When the network quality of default network is greater than predetermined threshold value, judge that default network recovers and judge that default network is better than backup network when the network quality of default network is greater than the network quality of backup network;

When being all less than predetermined threshold value, the network quality of default network and backup network judges that default network and backup network are all in extremely.

9. the method for switching network based on TD-LTE web camera according to claim 6, is characterized in that, described default network is TD-LTE network.

10. according to the method for switching network based on TD-LTE web camera described in claim 6 to 9 any one, it is characterized in that, described backup network is cable network or WIFI network.