CN107612847B

CN107612847B - Bandwidth allocation method and device and video monitoring system

Info

Publication number: CN107612847B
Application number: CN201610556165.6A
Authority: CN
Inventors: 郭斌; 杜安强; 蒋海青
Original assignee: Hangzhou Ezviz Network Co Ltd
Current assignee: Hangzhou fluorite Network Co.,Ltd.
Priority date: 2016-07-12
Filing date: 2016-07-12
Publication date: 2020-10-30
Anticipated expiration: 2036-07-12
Also published as: CN107612847A

Abstract

The embodiment of the invention provides a bandwidth allocation method, a bandwidth allocation device and a video monitoring system, wherein the method comprises the following steps: determining a plurality of target access network devices of the current bandwidth to be allocated; sequentially determining the bandwidth allocation priority of each target access network device according to the ascending sequence of the time delay values required by each target access network device and the assignment principle from the highest priority; allocating bandwidth for each target access network device according to the bandwidth allocation priority of each target access network device and a preset first bandwidth allocation table; after the bandwidth is allocated to each target access network device, whether the video monitor is allocated to obtain the bandwidth is judged, and if not, the video stream acquired by the video monitor is stored in a memory. By applying the embodiment of the invention, the bandwidth can be reasonably allocated on the premise of ensuring the integrity of the video stream uploading cloud of the video monitor and the user experience.

Description

Bandwidth allocation method and device and video monitoring system

Technical Field

The present invention relates to the field of bandwidth allocation technologies, and in particular, to a bandwidth allocation method, apparatus, and video monitoring system.

Background

At present, in a large-scale video monitoring system, since sufficient bandwidth resources are configured for the large-scale video monitoring system, the bandwidth often does not become a bottleneck. However, in small video surveillance systems such as home and retail stores, bandwidth resources are often insufficient due to limited bandwidth usage.

For example: suppose that the network bandwidth of a certain user home is 10M, and the user installs 4 identical network cameras at home, and the video resolution of each camera is 720P, and the average video bitrate reaches 1 Mbps. If the 4 cameras all select cloud storage as a storage mode, uploading the video shot by each camera to the cloud storage occupies 4M of bandwidth, so that the occupied bandwidth is large. The cloud storage refers to storing data on a network through technologies such as a distributed file system and cluster application, and a user can store and read the data on the cloud storage system on line.

In addition, since the network environment is complex, the actual bandwidth of a nominal 10M network may be lower than 10M. In this case, if the user returns home and wants to go online to watch a movie, play a game and browse a web page, the problem of insufficient bandwidth is more prominent.

Therefore, how to reasonably allocate bandwidth in the small video monitoring system on the premise of ensuring the integrity of the video stream uploading cloud of the video monitor and user experience is a problem to be solved urgently.

Disclosure of Invention

The embodiment of the invention aims to provide a bandwidth allocation method, a bandwidth allocation device and a video monitoring system, so as to reasonably allocate bandwidth in a small video monitoring system on the premise of ensuring the integrity of a video stream uploading cloud of a video monitor and user experience. The specific technical scheme is as follows:

in a first aspect, an embodiment of the present invention provides a bandwidth allocation method, where the method may include:

determining a plurality of target access network devices to be allocated with bandwidth currently, wherein the plurality of target access network devices comprise at least one video monitor;

sequentially determining the bandwidth allocation priority of each target access network device according to the ascending sequence of the delay values required by each target access network device and the assignment principle from the highest priority, wherein the delay values are used for representing the real-time requirements of the access networks of each target access network device, and the delay values and the bandwidth allocation priority are in a negative correlation relationship;

allocating bandwidth to each target access network device according to the bandwidth allocation priority of each target access network device and a preset first bandwidth allocation table, wherein the first bandwidth allocation table records the bandwidth allocation proportion corresponding to each bandwidth allocation priority;

after the bandwidth is allocated to each target access network device, whether the video monitor is allocated to obtain the bandwidth is judged, if not, the video stream acquired by the video monitor is stored in a memory, and the memory is a memory device of a router in a video monitoring system where the video monitor is located or a memory device of the video monitor.

Optionally, before sequentially determining the bandwidth allocation priorities of the target access network devices according to an increasing order of the delay values required by the target access network devices and a principle of assigning values from the highest priority, the method further includes:

determining current time information;

judging whether each target access network device is completely matched with a target preset access network device recorded by a preset second bandwidth allocation table, wherein the second bandwidth allocation table records preset access network devices corresponding to each time information and bandwidth allocation proportions corresponding to the preset access network devices, and the target preset access network devices are preset access network devices corresponding to the current time information;

when the judgment result is yes, allocating bandwidth for each target access network device based on the bandwidth allocation proportion corresponding to the target preset access network device, and executing the step of judging whether the video monitor allocates the bandwidth after allocating the bandwidth to each target access network device;

and when the judgment result is negative, executing the step of sequentially determining the bandwidth allocation priority of each target access network device according to the ascending sequence of the time delay values required by each target access network device and the assignment principle from the highest priority.

Optionally, after the allocating the bandwidth to each target access network device and before the determining whether the video monitor allocates the bandwidth, the method further includes:

detecting the bandwidth requirement of each target access network device in real time to obtain the bandwidth requirement value of each target access network device;

according to the ascending sequence of the time delay values, sequentially determining each target access network device as a first target access network device, and executing the following operations:

judging whether a first bandwidth requirement value of a current first target access network device is larger than a first bandwidth allocation value, wherein the first bandwidth allocation value is obtained by calculation based on a bandwidth allocation proportion corresponding to a bandwidth allocation priority of the first target access network device in the first bandwidth allocation table;

if the bandwidth allocation priority of the second target access network device is higher than the bandwidth allocation priority of the first target access network device, suspending bandwidth allocation to a second target access network device, and allocating a bandwidth sum corresponding to the first bandwidth allocation value and a second bandwidth allocation value to the first target access network device, wherein the second bandwidth allocation value is obtained by calculation based on a bandwidth allocation proportion corresponding to a bandwidth allocation priority of the second target access network device in the first bandwidth allocation table, and the bandwidth allocation priority of the second target access network device is lower than the bandwidth allocation priority of the first target access network device by one level;

if the bandwidth is smaller than the first bandwidth requirement value, whether the second target access network equipment is allocated with the bandwidth is judged, and if not, the bandwidth corresponding to the difference between the first bandwidth value allocation value and the first bandwidth requirement value is allocated to the second target access network equipment.

Optionally, the memory is a memory device of a router in a video monitoring system where the video monitor is located,

correspondingly, after the allocating the bandwidth sum corresponding to the first bandwidth allocation value and the second bandwidth allocation value to the first target access network device, the method further includes:

and storing the data to be transmitted and received of the second target access network equipment into a self-contained memory of a router in the video monitoring system.

Optionally, before sequentially determining the bandwidth allocation priorities of the target access network devices according to the ascending order of the delay values required by the target access network devices and the assignment principle from the highest priority, the method further includes:

and refreshing each target access network device with the current bandwidth allocation requirement in real time.

In a second aspect, an embodiment of the present invention provides a bandwidth distribution apparatus, which may include: the device comprises a first determining unit, a second determining unit, a bandwidth allocating unit and a first judging unit;

the first determining unit is configured to determine a plurality of target access network devices to which bandwidths are to be allocated currently, where the plurality of target access network devices include at least one video monitor;

the second determining unit is configured to sequentially determine bandwidth allocation priorities of the target access network devices according to an increasing order of delay values required by the target access network devices and a rule that a value is assigned from a highest priority, where the delay values are used to represent real-time requirements of access networks of the target access network devices, and the delay values and the bandwidth allocation priorities are in a negative correlation;

the bandwidth allocation unit is configured to allocate a bandwidth to each target access network device according to the bandwidth allocation priority of each target access network device and a preset first bandwidth allocation table, where bandwidth allocation proportions corresponding to the bandwidth allocation priorities are recorded in the first bandwidth allocation table;

the first judging unit is configured to judge whether the video monitor allocates the bandwidth after allocating the bandwidth to each target access network device, and if not, store the video stream acquired by the video monitor in a memory, where the memory is a storage device of a router in a video monitoring system where the video monitor is located or a storage device of the video monitor.

Optionally, the bandwidth allocation apparatus provided in the embodiment of the present invention may further include: a third determining unit, a second judging unit and an executing unit;

the third determining unit is configured to determine current time information before the second determining unit sequentially determines the bandwidth allocation priorities of the target access network devices according to an increasing order of the delay values required by the target access network devices and a value assignment principle from the highest priority;

the second determining unit is configured to determine whether each target access network device is completely matched with a target preset access network device recorded in a preset second bandwidth allocation table, where the second bandwidth allocation table records a preset access network device corresponding to each time information and a bandwidth allocation ratio corresponding to the preset access network device, and the target preset access network device is a preset access network device corresponding to the current time information;

the executing unit is configured to, when the determination result of the second determining unit is yes, allocate a bandwidth to each target access network device based on a bandwidth allocation proportion corresponding to the target preset access network device, and trigger the first determining unit; and when the judgment result is negative, triggering the second determining unit.

Optionally, the bandwidth allocation apparatus provided in the embodiment of the present invention may further include: a detection unit and a fourth determination unit;

the detecting unit is configured to detect the bandwidth demand value of each target access network device in real time to obtain the bandwidth demand value of each target access network device before the first determining unit determines whether the video monitor allocates the bandwidth;

the fourth determining unit is configured to sequentially determine, according to the increasing order of the time delay values, each target access network device as a first target access network device, and perform the following operations:

Optionally, the memory is a storage device of a router in a video monitoring system where the video monitor is located, and the bandwidth allocation apparatus provided in the embodiment of the present invention may further include: a storage unit;

the storage unit is configured to store, after the fourth determining unit allocates the bandwidth sum corresponding to the first bandwidth allocation value and the second bandwidth allocation value to the first target access network device, data to be received and transmitted by the second target access network device in a memory of a router in the video monitoring system.

Optionally, the bandwidth allocation apparatus provided in the embodiment of the present invention may further include: a refresh unit;

the refreshing unit is configured to refresh, in real time, each target access network device currently having a bandwidth allocation requirement before the second determining unit determines the bandwidth allocation priority of each target access network device in sequence according to the increasing sequence of the delay values required by each target access network device and the assignment principle from the highest priority.

In a third aspect, an embodiment of the present invention provides a video monitoring system, where the system may include: the router comprises a router and a plurality of access network devices which are communicated with the router, wherein at least one video monitor is included in the plurality of access network devices;

the router is configured to: determining a plurality of target access network devices to be allocated with bandwidth currently, wherein the plurality of target access network devices comprise at least one video monitor; sequentially determining the bandwidth allocation priority of each target access network device according to the ascending sequence of the delay values required by each target access network device and the assignment principle from the highest priority, wherein the delay values are used for representing the real-time requirements of the access networks of each target access network device, and the delay values and the bandwidth allocation priority are in a negative correlation relationship; allocating bandwidth to each target access network device according to the bandwidth allocation priority of each target access network device and a preset first bandwidth allocation table, wherein the first bandwidth allocation table records the bandwidth allocation proportion corresponding to each bandwidth allocation priority; after the bandwidth is allocated to each target access network device, judging whether the video monitor is allocated to obtain the bandwidth, if not, storing the video stream acquired by the video monitor into a memory, wherein the memory is a memory device of a router in a video monitoring system where the video monitor is located or a memory device of the video monitor;

and the target access network devices are respectively used for accessing the network according to the bandwidth allocated by the router.

Optionally, the router may be further configured to:

determining current time information before sequentially determining the bandwidth allocation priority of each target access network device according to the ascending sequence of the time delay values required by each target access network device and the assignment principle from the highest priority;

Optionally, the router may be further configured to:

after the bandwidth is allocated to each target access network device and before the video monitor is judged whether to allocate the bandwidth, detecting the bandwidth demand of each target access network device in real time to obtain the bandwidth demand value of each target access network device;

accordingly, the router may be further configured to:

after the bandwidth sum corresponding to the first bandwidth allocation value and the second bandwidth allocation value is allocated to the first target access network device, storing data to be received and transmitted by the second target access network device into a self-contained memory of a router in a video monitoring system.

Optionally, the router may be further configured to:

and refreshing each target access network device with the current bandwidth allocation requirement in real time before sequentially determining the bandwidth allocation priority of each target access network device according to the ascending sequence of the time delay value required by each target access network device and the assignment principle from the highest priority.

In the embodiment of the invention, after a plurality of target access network devices of the current bandwidth to be allocated are determined, the level of the real-time requirement of each target access network device on the access network can be determined according to the sequence of increasing time delay values required by each target access network device; determining the distribution priority of each target access network device by combining a principle of assigning values from the highest priority, wherein the bandwidth distribution priority corresponding to the target access network device with the smallest delay value is the highest, and the bandwidth distribution priority corresponding to the larger delay value of the rest target access network devices is the lower; in addition, because the bandwidth allocation proportion corresponding to each bandwidth allocation priority is recorded in the preset first bandwidth allocation table, the bandwidth allocation priority of each target access network device is matched with each bandwidth allocation priority in the first bandwidth allocation table, and the corresponding bandwidth allocation proportion is obtained; according to the obtained bandwidth allocation proportion, allocating bandwidth to each target access network device, realizing the prior allocation of bandwidth to the target access network device with high real-time requirement, and improving user experience; and after the bandwidth is allocated to each target access network device, judging whether the video monitor allocates the bandwidth, if so, uploading the video stream acquired by the video monitor to a cloud storage, otherwise, storing the video stream acquired by the video monitor to a storage device of the video monitoring system or the storage device of the video monitor, namely, under the condition of insufficient bandwidth resources, reasonably allocating the bandwidth in the small video monitoring system on the premise of ensuring the integrity of the video stream uploading cloud of the video monitor and user experience. Of course, not all of the advantages described above need to be achieved at the same time in the practice of any one product or method of the invention.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

Fig. 1 is a flowchart of a bandwidth allocation method according to an embodiment of the present invention;

fig. 2 is a schematic structural diagram of a bandwidth distribution apparatus according to an embodiment of the present invention;

fig. 3 is a schematic diagram of a video monitoring system corresponding to a bandwidth allocation method according to an embodiment of the present invention;

fig. 4 is a schematic diagram of a video monitoring system corresponding to another bandwidth allocation method according to an embodiment of the present invention;

fig. 5 is a schematic structural diagram of a video monitoring system according to an embodiment of the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In order to solve the problem of the prior art, embodiments of the present invention provide a bandwidth allocation method, a bandwidth allocation device, and a video monitoring system.

The following first describes a bandwidth allocation method provided in an embodiment of the present invention.

It should be noted that the bandwidth allocation method execution main body may be a router in charge of allocating bandwidth in the video monitoring system, and when there is a plurality of target access network devices in the video monitoring system that have internet access requirements, the bandwidth allocation method provided in the embodiment of the present invention may perform reasonable bandwidth allocation on the plurality of target access network devices on the premise of ensuring integrity of a video stream of the video monitor uploading to the cloud and ensuring user experience. The router has the capabilities of identifying various target access network equipment accesses, managing bandwidth allocation priorities, and interacting with the target access network equipment. Wherein the plurality of target access network devices are one or more of a plurality of access network devices in the video surveillance system.

The target access network device to be allocated with the bandwidth in the video monitoring system at least comprises a video monitor, such as a camera, and may further comprise other internet access devices, such as a smart phone, a smart television, a computer, and the like, where the number of the target access network devices to be allocated in the video monitoring system is not limited.

The method comprises the steps that a plurality of target access network devices in the video monitoring system are in communication connection with a router, so that the devices are connected to a public network through the router. In addition, the communication connection mode may be network communication, and specifically, the network communication may be wireless network communication or wired network communication, which is reasonable.

It can be understood that, it is reasonable that the functional software implementing the bandwidth allocation method according to the embodiment of the present invention may be software dedicated to bandwidth allocation provided in the router, or may be a functional plug-in provided in existing software for bandwidth allocation provided in the router.

As shown in fig. 1, the bandwidth allocation method may include the steps of:

s101: determining a plurality of target access network devices to be allocated with bandwidth currently, wherein the plurality of target access network devices comprise at least one video monitor;

the method comprises the steps of determining target access network equipment with access network requirements in a current video monitoring system, namely determining the target access network equipment with bandwidth to be allocated currently. The target access network equipment to be currently allocated with the bandwidth at least comprises a video monitor, and the video monitor has access network requirements at any monitoring time so as to upload video streams monitored by the video monitor to a cloud.

The uploading of the video stream monitored by the video monitor to the cloud refers to uploading the video stream to a network, and the cloud is an existing concept and is not described in detail herein.

S102: sequentially determining the bandwidth allocation priority of each target access network device according to the ascending sequence of the delay value required by each target access network device and the assignment principle from the highest priority, wherein the delay value is used for representing the real-time requirement of the access network of each target access network device, and the delay value and the bandwidth allocation priority are in a negative correlation relationship;

after determining each target access network device of the current bandwidth to be allocated, determining a time delay value required by each target access network device according to the real-time requirement of the service operated by each current target access network device; and determining the bandwidth allocation priority of each target access network device according to the time delay value required by each target access network device, namely setting the bandwidth allocation priority for each target access network device in sequence according to the sequence from low to high of the time delay value required by each target access network device, so as to preferentially ensure the bandwidth allocation of the target access network device with high real-time requirement, and improve the user experience. The principle of setting the bandwidth allocation priority is as follows: the assignment is started from the highest priority. It should be noted that the delay value required by each target access network device may be set manually by a user, or the delay value may be determined automatically according to the device type of each target access network device by a router executing the method provided by the embodiment of the present invention, which is reasonable.

For example, at a first time, the target access network device that determines the bandwidth to be currently allocated in the video surveillance system a includes: the system comprises an intelligent television, an intelligent mobile phone and a video monitor, wherein the time delay value required by the intelligent mobile phone to access a network is 1 second, the time delay value required by the intelligent television is 2 seconds, and the time delay value required by the video monitor is 10 seconds, so that the real-time requirements of the intelligent mobile phone and the intelligent television can be judged to be relatively high, and the real-time requirement of the video monitor is relatively low; in addition, according to the principle that the time delay values are assigned from low to high and from the highest priority, the bandwidth allocation priority of the smart phone is sequentially determined to be 1, the bandwidth allocation priority of the smart television is 2, the bandwidth allocation priority of the video monitor is 3, the bandwidth allocation priority is set to be 1 and belongs to the highest priority, the bandwidth allocation priority is set to be 3 and belongs to the lowest priority, namely, the time delay values and the bandwidth allocation priority are in a negative correlation relationship;

at the second moment, determining that the target access network equipment to be currently allocated with the bandwidth in the video monitoring system A comprises: the system comprises an intelligent television, a tablet personal computer, an intelligent mobile phone and a video monitor, wherein the time delay value required by the intelligent mobile phone to access a network is 1 second, the time delay value allowed by the tablet personal computer to access the network is 1.5 seconds, the time delay value required by the intelligent television is 2 seconds, and the time delay value required by the video monitor is 10 seconds; in addition, according to the principle that the time delay values are assigned from low to high and from the highest priority, the bandwidth allocation priority of the smart phone is determined to be 1, the bandwidth allocation priority of the tablet computer is determined to be 2, the bandwidth allocation priority of the smart television is determined to be 3, the bandwidth allocation priority of the video monitor is determined to be 4, the priority is set to be 1 and belongs to the highest priority, the priority is set to be 4 and belongs to the lowest priority, and namely, the time delay values and the bandwidth allocation priority are in a negative correlation relationship.

It should be emphasized that the above examples are merely exemplary and should not be construed as limiting embodiments of the present invention, that is, the determined target access network devices to which bandwidth is currently allocated include, but are not limited to, smart televisions, smart phones, tablet computers, and video monitors.

Those skilled in the art can understand that there is often a downloading requirement for devices such as a smart television and a smart phone, and a user's requirement for downloading data such as watching movies and playing games by using the smart television or the smart phone is real-time, so that the requirement for time for accessing a network is high, that is, a low delay value is required, while a video monitor only has a requirement for uploading a video stream to a cloud, and the requirement for time for accessing the network is low, that is, a low delay value is required.

S103: allocating bandwidth for each target access network device according to the bandwidth allocation priority of each target access network device and a preset first bandwidth allocation table, wherein the bandwidth allocation ratio corresponding to each bandwidth allocation priority is recorded in the first bandwidth allocation table;

for example, 50 bandwidth allocation priorities may be recorded in the first bandwidth allocation table, where the bandwidth allocation priority is 1 belonging to the highest priority, the bandwidth allocation priority is 50 belonging to the lowest priority, and the bandwidth allocation priorities 1 to 50 all correspond to the corresponding bandwidth allocation proportions, where the bandwidth allocation proportion with the bandwidth allocation priority of 50 may be 0, and certainly is not limited thereto.

Therefore, the bandwidth allocation priority of each target access network device can be matched with the bandwidth allocation priority in the preset first bandwidth allocation table, the bandwidth allocation proportion of each target access network device is determined according to the priority matching result, and the bandwidth is allocated to each target access network device according to the bandwidth allocation proportion of each target access network device.

As can be understood by those skilled in the art, after the bandwidth allocation priority of each target access network device is determined, the bandwidth allocation of the target access network device with a high priority can be preferentially met, and when the bandwidth allocation requirement of the target access network device with a high priority is met, the bandwidth allocation of the target access network device with the next priority is performed.

It should be emphasized that the number of levels of the bandwidth allocation priority may be determined according to the number of devices existing in the video monitoring system, and since the bandwidth is limited, in order to ensure that some devices with lower allowed delay values can normally surf the internet, i.e. allocate to a proper bandwidth, the bandwidth allocation ratio corresponding to the priority of some lower levels of bandwidth is 0, for example: the number of levels of the bandwidth allocation priority is 20, specifically: 1-20, wherein the bandwidth allocation priority 1 is the highest priority, the bandwidth allocation priority 20 is the lowest priority, the allocation proportion corresponding to the bandwidth allocation priority 1 is 40%, the allocation proportion corresponding to the bandwidth allocation priority 2 is 35%, the allocation proportion corresponding to the bandwidth allocation priority 3 is 15%, the allocation proportion corresponding to the bandwidth allocation priority 4 is 10%, and the allocation proportion corresponding to the remaining bandwidth allocation priorities is 0%.

S104: after the bandwidth is allocated to each target access network device, whether the video monitor is allocated to obtain the bandwidth is judged, if not, the video stream acquired by the video monitor is stored in a memory, and the memory is a memory device of a router in a video monitoring system where the video monitor is located or a memory device of the video monitor.

After the bandwidth is allocated to each target access network device, whether a video monitor in the video monitoring system allocates the bandwidth is judged, when the video monitor is judged to allocate the bandwidth, the current bandwidth is sufficient, and no bandwidth bottleneck occurs, and at the moment, the video stream acquired by the video monitor can be uploaded to a cloud end; when it is determined that the video monitor does not allocate the bandwidth, it indicates that there are more devices (e.g., a smart phone, a smart television, etc.) with higher real-time requirements occupying the bandwidth, and in order to ensure the integrity of the video stream uploaded to the cloud, the video stream may be stored in a memory of the router itself, and the video monitor may be notified to reduce the frame rate and/or reduce the resolution to reduce the amount of data that needs to be uploaded. The storage is storage equipment of a router in a video monitoring system where the video monitor is located; of course, the video stream may also be stored in a memory of the video monitor itself.

In addition, after the video stream is stored in a memory of the video monitor for a preset time, whether the video monitor is allocated with the bandwidth is judged again, and when the video monitor is judged to be allocated with the bandwidth, the video stream stored in the memory of the video monitor is uploaded to a cloud end.

In the embodiment of the invention, after a plurality of target access network devices of the current bandwidth to be allocated are determined, the level of the real-time requirement of each target access network device on the access network can be determined according to the sequence of increasing time delay values required by each target access network device; determining the distribution priority of each target access network device by combining a principle of assigning values from the highest priority, wherein the bandwidth distribution priority corresponding to the target access network device with the smallest delay value is the highest, and the bandwidth distribution priority corresponding to the larger delay value of the rest target access network devices is the lower; in addition, because the bandwidth allocation proportion corresponding to each bandwidth allocation priority is recorded in the preset first bandwidth allocation table, the bandwidth allocation priority of each target access network device is matched with each bandwidth allocation priority in the first bandwidth allocation table, and the corresponding bandwidth allocation proportion is obtained; according to the obtained bandwidth allocation proportion, allocating bandwidth to each target access network device, realizing the prior allocation of bandwidth to the target access network device with high real-time requirement, and improving user experience; and after the bandwidth is allocated to each target access network device, judging whether the video monitor allocates the bandwidth, if so, uploading the video stream acquired by the video monitor to a cloud storage, otherwise, storing the video stream acquired by the video monitor to a storage device of the video monitoring system or the storage device of the video monitor, namely, under the condition of insufficient bandwidth resources, reasonably allocating the bandwidth in the small video monitoring system on the premise of ensuring the integrity of the video stream uploading cloud of the video monitor and user experience.

Optionally, in a specific implementation manner, in order to improve the bandwidth allocation efficiency, before sequentially determining the bandwidth allocation priority of each target access network device according to an order of increasing delay values required by each target access network device and a principle of assigning a value from the highest priority, the method may further include:

determining current time information;

judging whether each target access network device is completely matched with a target preset access network device recorded by a preset second bandwidth allocation table, wherein the preset access network device corresponding to each time information and a bandwidth allocation proportion corresponding to the preset access network device are recorded in the second bandwidth allocation table, and the target preset access network device is the preset access network device corresponding to the current time information;

if so, allocating bandwidth to each target access network device based on the bandwidth allocation proportion corresponding to the target preset access network device, and executing the step of judging whether the video monitor allocates the bandwidth after allocating the bandwidth to each target access network device;

It can be understood that, in this implementation manner, before determining the bandwidth allocation priority of each target access network device, a preset second bandwidth allocation table is used to match with each target access network device, where each time information, the preset access network device corresponding to each time information, and the bandwidth allocation proportion corresponding to the preset access network device are recorded in the second bandwidth allocation table, and therefore, after determining the current time information, the time information corresponding to the current time information is searched in the second bandwidth allocation table, and the preset access network device corresponding to the time information is obtained.

And judging whether each target access network device is completely matched with the preset access network device, and when the target access network devices are completely matched with the preset access network device, directly allocating the bandwidth to each target access network device based on the bandwidth allocation proportion corresponding to the preset access network device corresponding to the time information, wherein the bandwidth allocation speed to the target access network device can be accelerated at the moment. And the preset access network equipment corresponding to the time information is the target access network equipment.

When the target access network devices are judged to be not completely matched with the preset access network devices, the bandwidth allocation priorities of the target access network devices are sequentially determined according to the ascending sequence of the time delay values required by the target access network devices and the assignment principle from the highest priority, and the bandwidth is allocated to the target access network devices by using the first bandwidth allocation table.

For example, the current time is 7:30 am, belongs to 7 am recorded in the second bandwidth allocation table: 00-8:00, and the 7: the preset access network equipment recorded in the time period of 00-8:00 is a smart phone, a smart television and a video monitor, the bandwidth allocation proportion corresponding to the smart phone is 40%, the bandwidth allocation proportion corresponding to the smart television is 30%, and the bandwidth allocation proportion corresponding to the video monitor is 30%. When the determined target access network devices are smart phones, smart televisions and video monitors, that is, when each target access network device is completely matched with a preset access network device, according to 7 in the second bandwidth allocation table: and the bandwidth allocation proportion of the preset access network equipment recorded in the time period of 00-8:00 allocates bandwidth to the smart phone, the smart television and the video monitor.

When the determined target access network devices are the smart phone and the video monitor, namely, each target access network device is not completely matched with the preset access network device, setting the smart phone as a priority 1 and the video monitor as a priority 2 according to the sequence of increasing delay values required by the smart phone and the video monitor for accessing the network, namely the sequence from the smart phone to the video monitor; matching the priority 1 and the priority 2 with the priority recorded in a preset first bandwidth allocation table, and allocating bandwidth to the smart phone by using the bandwidth allocation proportion corresponding to the priority 1 in the first bandwidth allocation table; and allocating the bandwidth to the video monitor by using the bandwidth allocation proportion corresponding to the priority 2 in the first bandwidth allocation table.

The second bandwidth allocation table can be preset based on the use requirements of the user, for example, according to the type of the user using equipment and the activity time rule of the user, that is, for example, 19:00-22:00 at night, generally the time for family to eat, communicate and entertain at night, the time period is the peak time when the smart television plays network programs, and the smart phone and other terminals are used for surfing the internet, so that the preset bandwidth allocation proportion can be allocated to the smart television and the smart phone in the second bandwidth allocation table, and the preset bandwidth allocation proportion can be obtained based on the bandwidth utilization condition of the smart television and the smart phone at the 19:00-22:00 time period historically; and at the moment, the video monitor can distribute less bandwidth or even not distribute bandwidth without worrying about the occurrence of abnormal conditions in the house and being unknown, and when the video monitor is not distributed with the bandwidth, the video monitoring data of the video monitor is cached in the memory of the video monitor or cached in the memory of the routing equipment, and when the video monitor is distributed with the bandwidth, the cached video monitoring data is transmitted to the cloud.

In the time period of 8:00-19:00, generally, the family member is on duty, goes to school or goes out, the network program played by the smart television is not frequently used in the time period, the family bandwidth is not frequently used for surfing the internet by the smart mobile phone, and because the family member is not frequently at home at this time and whether the abnormal condition exists in the home needs to be monitored in real time, the video monitor and the sensor in the time period should be allocated with more bandwidth, and the smart television and the smart mobile phone are allocated with less bandwidth or even not allocated with bandwidth.

It is emphasized that the second bandwidth allocation table includes, but is not limited to, the above-described exemplary forms.

Optionally, after the allocating the bandwidth to each target access network device and before the determining whether the video monitor allocates the bandwidth, the method may further include:

according to the ascending sequence of the time delay value, sequentially determining each target access network device as a first target access network device, and executing the following operations:

judging whether a first bandwidth requirement value of the current first target access network equipment is larger than a first bandwidth allocation value, wherein the first bandwidth allocation value is obtained by calculation based on a bandwidth allocation proportion corresponding to the bandwidth allocation priority of the first target access network equipment in the first bandwidth allocation table;

if the bandwidth allocation priority of the second target access network device is higher than the bandwidth allocation priority of the first target access network device, suspending bandwidth allocation to a second target access network device, and allocating a bandwidth sum corresponding to the first bandwidth allocation value and a second bandwidth allocation value to the first target access network device, wherein the second bandwidth allocation value is obtained by calculation based on a bandwidth allocation proportion corresponding to the bandwidth allocation priority of the second target access network device in the first bandwidth allocation table, and the bandwidth allocation priority of the second target access network device is lower than the bandwidth allocation priority of the first target access network device by one level;

It can be understood that, as an embodiment of the present invention, after the bandwidth is allocated to each target access network device by using the preset first bandwidth allocation table, and before determining whether the video monitor allocates the bandwidth, each target access network device may be determined as the first target access network device in sequence according to an order that the delay value required by each target access network device increases, or according to a priority of the bandwidth allocation of each determined access network device and an order from a high priority, and a target access network device whose required delay value is immediately adjacent to the first target access network device is determined as the second target access network device, or a target access network device whose priority level is one level lower than that of the first target access network device is determined as the second target access network device.

Monitoring the bandwidth requirement of each target access network device in real time to obtain the bandwidth requirement value of each target access network device; judging whether the current first bandwidth demand value of the first target access network equipment is larger than the first bandwidth allocation value, if so, suspending bandwidth allocation to the second target access network equipment, and allocating the second bandwidth allocation value allocated to the second target access network equipment to the first target access network equipment by the first target access network equipment on the basis of acquiring the first bandwidth allocation value by allocation.

And when the first bandwidth requirement value of the current first target access network equipment is judged to be smaller than the first bandwidth allocation value, allocating the bandwidth corresponding to the difference between the first bandwidth allocation value and the first bandwidth requirement value to the second target access network equipment so as to reasonably allocate the bandwidth.

It is emphasized that the first target access network device may be any device of the target access network devices and the second target access network device may be any device other than the target access network device corresponding to the highest priority.

As another embodiment of the present invention, after allocating a bandwidth to each target access network device by using a preset second bandwidth allocation table, and before determining whether a video monitor allocates a bandwidth, each target access network device may be sequentially determined as a first target access network device according to a priority level corresponding to each access network device recorded in the second bandwidth allocation table and an order from a high priority level, where all target access network devices having a priority level lower than that of the first target access network device are used as second target access network devices.

Monitoring the bandwidth requirement of each target access network device in real time to obtain the bandwidth requirement value of each target access network device; and judging whether the current first bandwidth requirement value of the first target access network equipment is greater than the first bandwidth allocation value, if so, suspending bandwidth allocation to the second target access network equipment, and allocating the bandwidth allocation value allocated to the second target access network equipment to the first target access network equipment, so that the bandwidth allocation requirement of the high-priority target access network equipment is guaranteed preferentially, and the user experience is improved.

Optionally, when the memory is a memory device of the router in the video monitoring system where the video monitor is located,

and storing the data to be transmitted and received by the second target access network equipment into a self-contained memory of the router in the video monitoring system.

It can be understood that, in this implementation manner, when the second target access network device does not allocate bandwidth, the data to be received and transmitted by the second target access network device is stored in the storage device of the router in the video monitoring system, which can relieve the current bandwidth pressure, and can ensure that the data to be received and transmitted by the second target access network device is not lost, thereby improving user experience.

It should be emphasized that the second target access network device may be any target access network device, and when the second target access network device is a video monitor, it may also be understood that data to be uploaded to a cloud end by the video monitor may be stored in a storage device of the video monitor.

It will be appreciated that in such an implementation, since the target access network device may change at any time, the access network device currently having the bandwidth allocation requirement should be refreshed in real time for the rationality of bandwidth allocation.

The following illustrates a preset first bandwidth allocation table and a preset second bandwidth allocation table according to an embodiment of the present invention.

The preset first bandwidth allocation table may be in the following form:

priority level	Bandwidth allocation ratio
		1	30％
2	15％
		3	15％
……	……
		N	0％

First bandwidth allocation table

The preset second bandwidth allocation table may be in the following form:

second bandwidth allocation table

It should be emphasized that the first bandwidth allocation table and the second bandwidth allocation table are only examples, and neither the first bandwidth allocation table nor the second bandwidth allocation table is limited thereto.

For convenience of understanding, the bandwidth allocation method provided by the embodiment of the present invention is described below with reference to specific examples.

As shown in fig. 3, it is assumed that the video monitoring system corresponding to the bandwidth allocation method provided in the embodiment of the present invention includes a router 310, a smart television 320 (whose required delay value is 1 second), a desktop computer 330 (whose required delay value is 1.5 seconds), a tablet computer 340 (whose required delay value is 1.5 seconds), a smart phone 350 (whose required delay value is 2 seconds), a first video monitor 360 (whose required delay value is 10 seconds), a second video monitor 370 (whose required delay value is 10 seconds), and a third video monitor 380 (whose required delay value is 10 seconds), where the router 310 has a memory 311 and is preset with a first bandwidth allocation table, and the specific content is: the bandwidth allocation proportion is 40% for priority 1, 35% for priority 2 and 25% for priority 3; specifically, in the bandwidth allocation process:

the router 310 determines that the plurality of target access network devices to which the bandwidth is currently allocated are: a smart tv 320, a desktop computer 330, a smart phone 350, and a first video monitor 360;

the router 310 determines the bandwidth allocation priority of each target access network device in sequence according to the ascending order of the delay values required by each target access network device and the assignment principle from the highest priority, specifically: because the delay value required by the smart television 320 is 1 second, the delay value required by the desktop computer is 1.5 seconds, the delay value required by the smart phone is 2 seconds, and the delay value required by the first video monitor 360 is 10 seconds, the following results are obtained according to the ascending order of the delay values and the principle of assigning values from the highest priority: the bandwidth allocation priority 1 corresponding to the smart television 320, the bandwidth allocation priority 2 corresponding to the desktop computer 330, the bandwidth allocation priority 3 corresponding to the smart phone 350, and the bandwidth allocation priority 4 corresponding to the first video monitor 360;

allocating bandwidth for each target access network device according to the bandwidth allocation priority of each target access network device and a preset first bandwidth allocation table, specifically: the bandwidth allocation proportion corresponding to the smart television 320 is 40%, the bandwidth allocation proportion corresponding to the desktop computer 330 is 35%, the bandwidth allocation proportion corresponding to the smart phone 350 is 25%, and the bandwidth allocation proportion corresponding to the first video monitor 360 is 0%;

after the bandwidth is allocated to each target access network device, determining whether the video monitor allocates the bandwidth, if not, storing the video stream acquired by the video monitor into a memory, where the memory is a memory device of a router in a video monitoring system where the video monitor is located, and specifically: after the bandwidth is allocated to the smart television 320, the desktop computer 330, the smart phone 350, and the first video monitor 360, it is determined whether the first video monitor 360 is allocated with the bandwidth, and since the allocation proportion of the bandwidth corresponding to the first video monitor 360 is 0%, it is determined that the first video monitor 360 is not allocated with the bandwidth, and the video stream collected by the first video monitor 360 is stored in the memory 311 of the router 310.

The bandwidth allocation method can preferentially ensure the bandwidth allocation of the equipment with high real-time requirement under the condition of insufficient bandwidth, store the video stream acquired by the video monitor into the memory of the router, reduce the bandwidth allocation pressure, ensure the integrity of the monitored video, and upload the data stored in the memory to the cloud when the bandwidth allocation pressure is reduced.

In addition, as shown in fig. 4, it is assumed that the video monitoring system corresponding to another bandwidth allocation method provided by the embodiment of the present invention includes a router 410, a smart television 420 (whose required delay value is 1 second), a desktop computer 430 (whose required delay value is 1.5 seconds), a tablet computer 440 (whose required delay value is 1.5 seconds), a smart phone 450 (whose required delay value is 2 seconds), and a first video monitor 460 (which requires a delay value of 10 seconds), a second video monitor 470 (which requires a delay value of 10 seconds), and a third video monitor 480 (which requires a delay value of 10 seconds), the first video monitor 460, the second video monitor 470, and the third video monitor 480 have

memories

461, 471, and 481, respectively, and a first bandwidth allocation table is preset, specifically: the priority 1 corresponds to the bandwidth allocation proportion of 50%, the priority 2 corresponds to the bandwidth allocation proportion of 30%, and the priority 3 corresponds to the bandwidth allocation proportion of 20%; specifically, in the bandwidth allocation process:

the router 410 determines that a plurality of target access network devices to be currently allocated with bandwidth are: the smart television 420, the tablet computer 440, the smart phone 450 and the first video monitor 460;

the router 410 determines the bandwidth allocation priority of each target access network device in sequence according to the ascending order of the delay values required by each target access network device and the assignment principle from the highest priority, specifically: since the delay value required by the smart television 420 is 1 second, the delay value required by the tablet pc 440 is 1.5 seconds, the delay value required by the smart phone 450 is 2 seconds, and the delay value required by the first video monitor 460 is 10 seconds, according to the ascending order of the delay values and the principle of assigning values from the highest priority, the following results are obtained: the smart television 420 corresponds to a bandwidth allocation priority 1, the tablet computer 440 corresponds to a bandwidth allocation priority 2, the smart phone 450 corresponds to a bandwidth allocation priority 3, and the first video monitor 460 corresponds to a bandwidth allocation priority 4;

allocating bandwidth for each target access network device according to the bandwidth allocation priority of each target access network device and a preset first bandwidth allocation table, specifically: the bandwidth allocation proportion corresponding to the smart television 420 is 50%, the bandwidth allocation proportion corresponding to the tablet personal computer 440 is 30%, the bandwidth allocation proportion corresponding to the smart phone 450 is 20%, and since the first video monitor 460 does not correspond to the bandwidth allocation priority in the first bandwidth allocation table, the bandwidth allocation proportion corresponding to the first video monitor 460 is 0%;

after the bandwidth is allocated to each target access network device, determining whether the video monitor allocates the bandwidth, if not, storing the video stream acquired by the video monitor into a memory, where the memory is a storage device of the video monitor, and specifically: after the bandwidth is allocated to the smart television 420, the tablet pc 440, the smart phone 450, and the first video monitor 460, it is determined whether the first video monitor 460 is allocated with the bandwidth, and since the allocation proportion of the bandwidth corresponding to the first video monitor 460 is 0%, it is determined that the first video monitor 460 is not allocated with the bandwidth, and the video stream collected by the first video monitor 460 is stored in the memory 461 of the first video monitor 460.

The bandwidth allocation method can preferentially ensure the bandwidth allocation of the equipment with high real-time requirement under the condition of insufficient bandwidth, store the video stream acquired by the video monitor into the memory of the video monitor, reduce the bandwidth allocation pressure, ensure the integrity of the monitored video, and upload the data stored in the memory to the cloud when the bandwidth allocation pressure is reduced.

Corresponding to the above method embodiment, an embodiment of the present invention further provides a bandwidth allocation apparatus, where the apparatus may include: a first determining unit 201, a second determining unit 202, a bandwidth allocating unit 203 and a first judging unit 204;

the first determining unit 201 is configured to determine a plurality of target access network devices to which bandwidths are to be currently allocated, where the plurality of target access network devices include at least one video monitor;

the second determining unit 202 is configured to sequentially determine the bandwidth allocation priority of each target access network device according to an increasing order of the delay values required by each target access network device and a rule that the assignment is started from the highest priority, where the delay value is used to represent a real-time requirement of an access network of each target access network device, and the delay value and the bandwidth allocation priority are in a negative correlation;

the bandwidth allocation unit 203 is configured to allocate bandwidth to each target access network device according to the bandwidth allocation priority of each target access network device and a preset first bandwidth allocation table, where bandwidth allocation proportions corresponding to the bandwidth allocation priorities are recorded in the first bandwidth allocation table;

the first determining unit 204 is configured to determine whether the video monitor allocates the bandwidth after allocating the bandwidth to each target access network device, and if not, store the video stream acquired by the video monitor in a memory, where the memory is a storage device of a router in a video monitoring system where the video monitor is located or a storage device of the video monitor.

the third determining unit is configured to determine current time information before the second determining unit sequentially determines the bandwidth allocation priorities of the target access network devices according to the ascending order of the delay values required by the target access network devices and the assignment principle from the highest priority;

the second determining unit is configured to determine whether each target access network device is completely matched with a target preset access network device recorded in a preset second bandwidth allocation table, where the second bandwidth allocation table records a preset access network device corresponding to each time information and a bandwidth allocation proportion corresponding to the preset access network device, and the target preset access network device is the preset access network device corresponding to the current time information;

the executing unit is configured to, when the determination result of the second determining unit is yes, allocate a bandwidth to each target access network device based on the bandwidth allocation proportion corresponding to the target preset access network device, and trigger the first determining unit; and when the judgment result is negative, triggering the second determining unit.

the detecting unit is configured to detect the bandwidth demand of each target access network device in real time to obtain the bandwidth demand value of each target access network device before the first determining unit determines whether the video monitor allocates the bandwidth;

the fourth determining unit is configured to sequentially determine, according to the ascending order of the delay values, each target access network device as a first target access network device, and perform the following operations:

Corresponding to the above method and apparatus embodiments, an embodiment of the present invention further provides a video monitoring system, as shown in fig. 5, the system may include: a router 510 and a plurality of access network devices 520 in communication with the router, wherein the plurality of access network devices 520 include at least one video monitor;

the router 510 is configured to: determining a plurality of target access network devices to be allocated with bandwidth currently, wherein the plurality of target access network devices comprise at least one video monitor; sequentially determining the bandwidth allocation priority of each target access network device according to the ascending sequence of the delay values required by each target access network device and the assignment principle from the highest priority, wherein the delay values are used for representing the real-time requirements of the access networks of each target access network device, and the delay values and the bandwidth allocation priority are in a negative correlation relationship; allocating bandwidth to each target access network device according to the bandwidth allocation priority of each target access network device and a preset first bandwidth allocation table, wherein the first bandwidth allocation table records the bandwidth allocation proportion corresponding to each bandwidth allocation priority; after the bandwidth is allocated to each target access network device, judging whether the video monitor is allocated to obtain the bandwidth, if not, storing the video stream acquired by the video monitor into a memory, wherein the memory is a memory device of a router in a video monitoring system where the video monitor is located or a memory device of the video monitor;

It should be noted that the plurality of target access network devices are one or more devices in the plurality of access network devices 520 in the video surveillance system.

In the embodiment of the invention, after determining a plurality of target access network devices of the current bandwidth to be allocated, the router can determine the level of the real-time requirement of each target access network device on the access network according to the ascending sequence of the time delay value required by each target access network device; determining the distribution priority of each target access network device by combining a principle of assigning values from the highest priority, wherein the bandwidth distribution priority corresponding to the target access network device with the smallest delay value is the highest, and the bandwidth distribution priority corresponding to the larger delay value of the rest target access network devices is the lower; in addition, because the bandwidth allocation proportion corresponding to each bandwidth allocation priority is recorded in the preset first bandwidth allocation table, the bandwidth allocation priority of each target access network device is matched with each bandwidth allocation priority in the first bandwidth allocation table, and the corresponding bandwidth allocation proportion is obtained; according to the obtained bandwidth allocation proportion, allocating bandwidth to each target access network device, realizing the prior allocation of bandwidth to the target access network device with high real-time requirement, and improving user experience; and after the bandwidth is allocated to each target access network device, judging whether the video monitor allocates the bandwidth, if so, uploading the video stream acquired by the video monitor to a cloud storage, otherwise, storing the video stream acquired by the video monitor to a storage device of the video monitoring system or the storage device of the video monitor, namely, under the condition of insufficient bandwidth resources, reasonably allocating the bandwidth in the small video monitoring system on the premise of ensuring the integrity of the video stream uploading cloud of the video monitor and user experience.

Optionally, the router 510 may further be configured to:

accordingly, the router 510 may be further configured to:

Optionally, the router 510 may further be configured to:

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.

All the embodiments in the present specification are described in a related manner, and the same and similar parts among the embodiments may be referred to each other, and each embodiment focuses on the differences from the other embodiments. In particular, for the system embodiment, since it is substantially similar to the method embodiment, the description is simple, and for the relevant points, reference may be made to the partial description of the method embodiment.

The above description is only for the preferred embodiment of the present invention, and is not intended to limit the scope of the present invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention shall fall within the protection scope of the present invention.

Claims

1. A method of bandwidth allocation, comprising:

determining time delay values required by the target access network devices according to the real-time requirements of the services operated by the target access network devices;

after the bandwidth is allocated to each target access network device, judging whether the video monitor is allocated to obtain the bandwidth, if not, storing the video stream acquired by the video monitor into a memory, wherein the memory is a memory device of a router in a video monitoring system where the video monitor is located or a memory device of the video monitor;

before the determining the bandwidth allocation priority of each target access network device in sequence according to the ascending order of the delay values required by each target access network device and the assignment principle from the highest priority, the method further includes:

2. The method according to claim 1, wherein before sequentially determining the bandwidth allocation priorities of the target access network devices according to an increasing order of the delay values required by the target access network devices and a rule of assigning values from the highest priority, the method further comprises:

determining current time information;

3. The method of claim 1, wherein after said allocating bandwidth to each of the target access network devices and before said determining whether the video monitor is allocated bandwidth, the method further comprises:

4. The method of claim 3, wherein the memory is a memory device of a router in a video surveillance system in which the video monitor is located,

5. A bandwidth distribution apparatus, comprising:

a first determining unit, configured to determine multiple target access network devices to which bandwidths are to be currently allocated, where the multiple target access network devices include at least one video monitor;

a second determining unit, configured to determine, according to a real-time requirement of a service executed by the multiple target access network devices, delay values required by the multiple target access network devices; sequentially determining the bandwidth allocation priority of each target access network device according to the ascending sequence of the delay values required by each target access network device and the assignment principle from the highest priority, wherein the delay values are used for representing the real-time requirements of the access networks of each target access network device, and the delay values and the bandwidth allocation priority are in a negative correlation relationship;

a bandwidth allocation unit, configured to allocate bandwidth to each target access network device according to the bandwidth allocation priority of each target access network device and a preset first bandwidth allocation table, where bandwidth allocation proportions corresponding to the bandwidth allocation priorities are recorded in the first bandwidth allocation table;

a first determining unit, configured to determine whether the video monitor allocates bandwidth after allocating bandwidth to each target access network device, and if not, store a video stream acquired by the video monitor in a memory, where the memory is a storage device of a router in a video monitoring system where the video monitor is located or a storage device of the video monitor;

further comprising:

and the refreshing unit is used for refreshing each target access network device which currently has the requirement of bandwidth allocation in real time before the second determining unit determines the bandwidth allocation priority of each target access network device in turn according to the ascending sequence of the time delay values required by each target access network device and the assignment principle from the highest priority.

6. The apparatus of claim 5, further comprising:

a third determining unit, configured to determine current time information before the second determining unit determines bandwidth allocation priorities of the target access network devices in sequence according to an increasing order of the delay values required by the target access network devices and a rule that the bandwidth allocation priorities are assigned from a highest priority;

a second determining unit, configured to determine whether each target access network device is completely matched with a target preset access network device recorded in a preset second bandwidth allocation table, where the second bandwidth allocation table records a preset access network device corresponding to each time information and a bandwidth allocation ratio corresponding to the preset access network device, and the target preset access network device is the preset access network device corresponding to the current time information;

an executing unit, configured to allocate bandwidth to each target access network device based on a bandwidth allocation proportion corresponding to the target preset access network device and trigger the first determining unit when the determination result of the second determining unit is yes; and when the judgment result is negative, triggering the second determining unit.

7. The apparatus of claim 5, further comprising:

a detecting unit, configured to detect the bandwidth demand value of each target access network device in real time to obtain the bandwidth demand value of each target access network device before the first determining unit determines whether the video monitor allocates the bandwidth;

a fourth determining unit, configured to sequentially determine, according to the increasing order of the time delay values, each target access network device as a first target access network device, and perform the following operations:

8. The apparatus of claim 7, wherein the memory is a storage device of a router in a video surveillance system in which the video monitor is located, the apparatus further comprising:

and a storage unit, configured to store, after the fourth determining unit allocates the bandwidth sum corresponding to the first bandwidth allocation value and the second bandwidth allocation value to the first target access network device, data to be received and transmitted by the second target access network device in a memory of a router in a video monitoring system.

9. A video surveillance system, comprising: the router comprises a router and a plurality of access network devices which are communicated with the router, wherein at least one video monitor is included in the plurality of access network devices;

the router is configured to: determining a plurality of target access network devices to be allocated with bandwidth currently, wherein the plurality of target access network devices comprise at least one video monitor; determining time delay values required by the target access network devices according to the real-time requirements of the services operated by the target access network devices; sequentially determining the bandwidth allocation priority of each target access network device according to the ascending sequence of the delay values required by each target access network device and the assignment principle from the highest priority, wherein the delay values are used for representing the real-time requirements of the access networks of each target access network device, and the delay values and the bandwidth allocation priority are in a negative correlation relationship; allocating bandwidth to each target access network device according to the bandwidth allocation priority of each target access network device and a preset first bandwidth allocation table, wherein the first bandwidth allocation table records the bandwidth allocation proportion corresponding to each bandwidth allocation priority; after the bandwidth is allocated to each target access network device, judging whether the video monitor is allocated to obtain the bandwidth, if not, storing the video stream acquired by the video monitor into a memory, wherein the memory is a memory device of a router in a video monitoring system where the video monitor is located or a memory device of the video monitor;

the target access network devices are respectively used for accessing the network according to the bandwidth allocated by the router;

the router is further configured to:

10. The system of claim 9, wherein the router is further configured to:

11. The system of claim 9, wherein the router is further configured to:

12. The system of claim 11, wherein the memory is a storage device of a router in a video surveillance system in which the video monitor is located,

accordingly, the router is further configured to: after the bandwidth sum corresponding to the first bandwidth allocation value and the second bandwidth allocation value is allocated to the first target access network device, storing data to be received and transmitted by the second target access network device into a self-contained memory of a router in a video monitoring system.