CN113905353A - Vehicle-mounted wireless network video data resource allocation and scheduling method and system - Google Patents

Vehicle-mounted wireless network video data resource allocation and scheduling method and system Download PDF

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CN113905353A
CN113905353A CN202111494689.4A CN202111494689A CN113905353A CN 113905353 A CN113905353 A CN 113905353A CN 202111494689 A CN202111494689 A CN 202111494689A CN 113905353 A CN113905353 A CN 113905353A
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node
driving
acquiring
data
route
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CN113905353B (en
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董轩
周炜
董国亮
汪旗航
晋杰
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Research Institute of Highway Ministry of Transport
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/30—Services specially adapted for particular environments, situations or purposes
    • H04W4/40—Services specially adapted for particular environments, situations or purposes for vehicles, e.g. vehicle-to-pedestrians [V2P]
    • H04W4/44—Services specially adapted for particular environments, situations or purposes for vehicles, e.g. vehicle-to-pedestrians [V2P] for communication between vehicles and infrastructures, e.g. vehicle-to-cloud [V2C] or vehicle-to-home [V2H]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/60—Network structure or processes for video distribution between server and client or between remote clients; Control signalling between clients, server and network components; Transmission of management data between server and client, e.g. sending from server to client commands for recording incoming content stream; Communication details between server and client 
    • H04N21/61—Network physical structure; Signal processing
    • H04N21/6106—Network physical structure; Signal processing specially adapted to the downstream path of the transmission network
    • H04N21/6131—Network physical structure; Signal processing specially adapted to the downstream path of the transmission network involving transmission via a mobile phone network
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/02—Services making use of location information
    • H04W4/024—Guidance services
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/02—Services making use of location information
    • H04W4/029—Location-based management or tracking services
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/50—Service provisioning or reconfiguring

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Abstract

The invention provides a vehicle-mounted wireless network video data resource allocation and scheduling method and a system, wherein the method comprises the following steps: acquiring a video acquisition request of a user, and determining target video data based on the video acquisition request; acquiring a transmission node capable of transmitting data on a driving path of an automobile as a node to be configured; segmenting the driving path based on the position of the node to be configured, acquiring a plurality of segmented routes and associating the segmented routes with the node to be configured; determining the corresponding running time of each sectional route; and configuring target video data for the nodes to be configured associated with the sectional routes based on the driving time to form data configuration nodes. According to the vehicle-mounted wireless network video data resource allocation and scheduling method, the target video data are reasonably allocated on each data transmission node on the driving path, so that the allocation of the video data resources is fast and reasonable, the fast and stable transmission of the vehicle-mounted wireless network video data is improved, and the user experience is improved.

Description

Vehicle-mounted wireless network video data resource allocation and scheduling method and system
Technical Field
The invention relates to the technical field of video data resource allocation and scheduling, in particular to a method and a system for allocating and scheduling video data resources of a vehicle-mounted wireless network.
Background
At present, along with the improvement of living standard of people, automobiles are already a common phenomenon as family walk-substituting tools, and more people select self-driving travel; the driving process is tedious, and the vehicle-mounted network video becomes a recreation choice except for the mobile phone; however, the existing video data resource allocation and scheduling method has the problems of low efficiency and low speed.
Disclosure of Invention
One of the purposes of the invention is to provide a vehicle-mounted wireless network video data resource allocation and scheduling method, which realizes the fast and reasonable allocation of video data resources by reasonably allocating target video data on each data transmission node on a driving path, improves the fast and stable transmission of vehicle-mounted wireless network video data, and improves the user experience.
The embodiment of the invention provides a vehicle-mounted wireless network video data resource allocation and scheduling method, which comprises the following steps:
acquiring a video acquisition request of a user, and determining target video data based on the video acquisition request;
acquiring a transmission node capable of transmitting data on a driving path of an automobile as a node to be configured;
segmenting the driving path based on the position of the node to be configured, acquiring a plurality of segmented routes and associating the segmented routes with the node to be configured;
determining the corresponding running time of each sectional route; and configuring target video data for the nodes to be configured associated with the sectional routes based on the driving time to form data configuration nodes.
Preferably, the acquiring of the transmission node capable of transmitting data on the driving path of the automobile as the node to be configured includes:
acquiring a driving path of an automobile;
acquiring a transmission node capable of transmitting data on a driving path as a node to be configured;
wherein, obtain the route of traveling of car, include:
acquiring a navigation path selected by a user as a driving path through a vehicle-mounted navigation system;
and/or the presence of a gas in the gas,
acquiring a historical driving record of an automobile;
determining a driving path based on the driving route of the automobile and the historical driving record;
and/or the presence of a gas in the gas,
acquiring the driving direction of the automobile;
acquiring a road distribution map within a preset first distance threshold value by taking the position of the automobile as the center;
based on the road map and the driving direction, a plurality of driving paths are determined.
Preferably, the acquiring a transmission node capable of transmitting data on the driving path as a node to be configured includes:
acquiring a distribution diagram of transmission nodes capable of transmitting data;
mapping the driving path into a distribution map;
calculating the shortest distance from each transmission node to a driving path in the distribution diagram;
and when the shortest distance is less than or equal to a preset second distance threshold value, taking the transmission node as a node to be configured.
Preferably, segmenting the driving path based on the position of the node to be configured, acquiring a plurality of segmented routes and associating the segmented routes with the node to be configured, includes:
sampling a driving path to obtain a plurality of sampling points;
calculating a first distance value between each sampling point and each node to be configured;
grouping each sampling point based on the difference of the nodes to be configured with the minimum first distance value;
integrating and connecting all sampling points in the same group in series to form at least one sectional route;
and associating the segmented route with the nodes to be configured corresponding to the groups.
Preferably, the determining the travel time corresponding to each segmented route includes:
acquiring a historical driving record of an automobile;
analyzing historical driving records and determining historical driving time of a plurality of sectional routes;
determining a driving time corresponding to the segmented route based on a plurality of historical driving times;
and/or the presence of a gas in the gas,
acquiring current driving parameter data of an automobile;
acquiring a first limiting parameter and a first road condition of a current driving road of an automobile;
determining a subjective deviation factor based on the driving parameter data, the first limiting parameter and the first road condition;
acquiring a second limiting parameter and a second road condition of each sectional route;
dividing the sectional route into line units based on a second limiting parameter and a second road condition;
determining driving parameter data corresponding to each line unit based on the second limiting parameter, the second road condition and the subjective deviation coefficient of each line;
determining the driving time of each line unit based on the driving parameter data corresponding to each line unit and the distance length of each line unit;
based on the travel time of each link unit, the travel time of each segment route is determined.
Preferably, the configuring the target video data for the node to be configured associated with the segment route based on the travel time includes:
acquiring initial playing time of each video clip of target video data;
acquiring the film watching habit of a viewer in the automobile;
adjusting the initial playing time based on the film watching habit, and determining the predicted playing time interval of each video clip;
correspondingly associating each video clip with each sectional route based on the predicted playing time interval of each video clip and the interval of the driving time of each sectional route;
configuring the data of the target video data corresponding to each video clip on the node to be configured corresponding to the corresponding subsection route to form a data configuration node;
the method for correspondingly associating each video clip with each sectional route based on the predicted playing time interval of each video clip and the driving time interval of each sectional route comprises the following steps:
obtaining cache parameters of a video player of the vehicle-mounted terminal;
determining the cache playing time corresponding to the minimum cache data based on the cache parameters;
will be first
Figure 218497DEST_PATH_IMAGE001
The section of the travel time corresponding to each sectional route is recorded as
Figure 826196DEST_PATH_IMAGE002
Wherein, the water-soluble polymer is a polymer,
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is equal to the value of
Figure 721656DEST_PATH_IMAGE001
The driving time corresponding to each sectional route; when in use
Figure 300405DEST_PATH_IMAGE004
When the temperature of the water is higher than the set temperature,
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；
will be first
Figure 477626DEST_PATH_IMAGE001
The corresponding associated predicted playing time interval of each sectional route is recorded as
Figure 327770DEST_PATH_IMAGE006
Wherein when
Figure 761025DEST_PATH_IMAGE007
When the temperature of the water is higher than the set temperature,
Figure 976106DEST_PATH_IMAGE008
is equal to the value of
Figure 862022DEST_PATH_IMAGE001
The driving time corresponding to each sectional route; when in use
Figure 187962DEST_PATH_IMAGE004
When the temperature of the water is higher than the set temperature,
Figure 210144DEST_PATH_IMAGE009
、
Figure 330547DEST_PATH_IMAGE010
is equal to the sum of the travel time and the buffer play time corresponding to the 1 st segment route.
Preferably, the vehicle-mounted wireless network video data resource allocation and scheduling method further includes:
when the data of the target video data configured on the data configuration node corresponding to the current driving subsection route of the automobile is transmitted to the vehicle-mounted terminal, acquiring the cache data information of the vehicle-mounted terminal in real time;
when the playing time corresponding to the cache data is less than the cache playing time, acquiring the remaining running time of the current sectional route; and data corresponding to the remaining travel time are called from the next data configuration node to the data configuration node associated with the sectional route.
Preferably, the vehicle-mounted wireless network video data resource allocation and scheduling method further includes:
when the automobile is parked and flamed out, access information of mobile terminal equipment which is around the vehicle-mounted terminal and is associated with the vehicle-mounted terminal is obtained;
connecting with the mobile terminal equipment based on the access information, and allocating the remaining unplayed data of the target video data to a data allocation node closest to the mobile terminal equipment; transmitted by the data configuration node to the mobile terminal device.
The invention also provides a vehicle-mounted wireless network video data resource allocation and scheduling system, which comprises:
the target video data determining module is used for acquiring a video acquisition request of a user and determining target video data based on the video acquisition request;
the device comprises a to-be-configured node determining module, a to-be-configured node determining module and a configuring module, wherein the to-be-configured node determining module is used for acquiring transmission nodes capable of transmitting data on a driving path of an automobile as to-be-configured nodes;
the segment association module is used for segmenting the driving path based on the position of the node to be configured, acquiring a plurality of segment routes and associating the segment routes with the node to be configured;
the configuration module is used for determining the corresponding running time of each sectional route; and configuring target video data for the nodes to be configured associated with the sectional routes based on the driving time to form data configuration nodes.
Preferably, when the to-be-configured node determining module obtains a transmission node capable of transmitting data on the driving path of the automobile as the to-be-configured node, the following operations are performed:
acquiring a driving path of an automobile;
acquiring a transmission node capable of transmitting data on a driving path as a node to be configured;
wherein, obtain the route of traveling of car, include:
acquiring a navigation path selected by a user as a driving path through a vehicle-mounted navigation system;
and/or the presence of a gas in the gas,
acquiring a historical driving record of an automobile;
determining a driving path based on the driving route of the automobile and the historical driving record;
and/or the presence of a gas in the gas,
acquiring the driving direction of the automobile;
acquiring a road distribution map within a preset first distance threshold value by taking the position of the automobile as the center;
based on the road map and the driving direction, a plurality of driving paths are determined.
Preferably, the to-be-configured node determining module obtains a transmission node capable of transmitting data on the driving path as the to-be-configured node, and executes the following operations:
acquiring a distribution diagram of transmission nodes capable of transmitting data;
mapping the driving path into a distribution map;
calculating the shortest distance from each transmission node to a driving path in the distribution diagram;
and when the shortest distance is less than or equal to a preset second distance threshold value, taking the transmission node as a node to be configured.
Preferably, the segment associating module segments the driving path based on the position of the node to be configured, obtains a plurality of segment routes and associates the segment routes with the node to be configured, and executes the following operations:
sampling a driving path to obtain a plurality of sampling points;
calculating a first distance value between each sampling point and each node to be configured;
grouping each sampling point based on the difference of the nodes to be configured with the minimum first distance value;
integrating and connecting all sampling points in the same group in series to form at least one sectional route;
and associating the segmented route with the nodes to be configured corresponding to the groups.
Preferably, the configuration module determines the travel time corresponding to each segmented route, and executes the following operations:
acquiring a historical driving record of an automobile;
analyzing historical driving records and determining historical driving time of a plurality of sectional routes;
determining a driving time corresponding to the segmented route based on a plurality of historical driving times;
and/or the presence of a gas in the gas,
acquiring current driving parameter data of an automobile;
acquiring a first limiting parameter and a first road condition of a current driving road of an automobile;
determining a subjective deviation factor based on the driving parameter data, the first limiting parameter and the first road condition;
acquiring a second limiting parameter and a second road condition of each sectional route;
dividing the sectional route into line units based on a second limiting parameter and a second road condition;
determining driving parameter data corresponding to each line unit based on the second limiting parameter, the second road condition and the subjective deviation coefficient of each line;
determining the driving time of each line unit based on the driving parameter data corresponding to each line unit and the distance length of each line unit;
based on the travel time of each link unit, the travel time of each segment route is determined.
Preferably, the configuration module configures target video data for nodes to be configured associated with the segment routes based on the travel time to form data configuration nodes, and performs the following operations:
acquiring initial playing time of each video clip of target video data;
acquiring the film watching habit of a viewer in the automobile;
adjusting the initial playing time based on the film watching habit, and determining the predicted playing time interval of each video clip;
correspondingly associating each video clip with each sectional route based on the predicted playing time interval of each video clip and the interval of the driving time of each sectional route;
configuring the data of the target video data corresponding to each video clip on the node to be configured corresponding to the corresponding subsection route to form a data configuration node;
the method for correspondingly associating each video clip with each sectional route based on the predicted playing time interval of each video clip and the driving time interval of each sectional route comprises the following steps:
obtaining cache parameters of a video player of the vehicle-mounted terminal;
determining the cache playing time corresponding to the minimum cache data based on the cache parameters;
will be first
Figure 969339DEST_PATH_IMAGE001
The section of the travel time corresponding to each sectional route is recorded as
Figure 426865DEST_PATH_IMAGE002
Wherein, the water-soluble polymer is a polymer,
Figure 37975DEST_PATH_IMAGE003
is equal to the value of
Figure 188333DEST_PATH_IMAGE001
The driving time corresponding to each sectional route; when in use
Figure 924208DEST_PATH_IMAGE004
When the temperature of the water is higher than the set temperature,
Figure 982163DEST_PATH_IMAGE005
；
will be first
Figure 182200DEST_PATH_IMAGE001
The corresponding associated predicted playing time interval of each sectional route is recorded as
Figure 175564DEST_PATH_IMAGE006
Wherein when
Figure 523369DEST_PATH_IMAGE007
When the temperature of the water is higher than the set temperature,
Figure 729222DEST_PATH_IMAGE008
is equal to the value of
Figure 846083DEST_PATH_IMAGE001
The driving time corresponding to each sectional route; when in use
Figure 72665DEST_PATH_IMAGE004
When the temperature of the water is higher than the set temperature,
Figure 783132DEST_PATH_IMAGE009
、
Figure 120572DEST_PATH_IMAGE010
is equal to the sum of the travel time and the buffer play time corresponding to the 1 st segment route.
Preferably, the vehicle-mounted wireless network video data resource allocation and scheduling system further includes: a scheduling module;
the scheduling module performs the following operations:
when the data of the target video data configured on the data configuration node corresponding to the current driving subsection route of the automobile is transmitted to the vehicle-mounted terminal, acquiring the cache data information of the vehicle-mounted terminal in real time;
when the playing time corresponding to the cache data is less than the cache playing time, acquiring the remaining running time of the current sectional route; and data corresponding to the remaining travel time are called from the next data configuration node to the data configuration node associated with the sectional route.
Preferably, the vehicle-mounted wireless network video data resource allocation and scheduling system further includes: a target conversion module;
the target conversion module performs the following operations:
when the automobile is parked and flamed out, access information of mobile terminal equipment which is around the vehicle-mounted terminal and is associated with the vehicle-mounted terminal is obtained;
connecting with the mobile terminal equipment based on the access information, and allocating the remaining unplayed data of the target video data to a data allocation node closest to the mobile terminal equipment; transmitted by the data configuration node to the mobile terminal device.
Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.
The technical solution of the present invention is further described in detail by the accompanying drawings and embodiments.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:
fig. 1 is a schematic diagram of a video data resource allocation and scheduling method for a vehicle-mounted wireless network according to an embodiment of the present invention;
fig. 2 is a schematic diagram of a video data resource allocation and scheduling system of a vehicle-mounted wireless network according to an embodiment of the present invention.
Detailed Description
The preferred embodiments of the present invention will be described in conjunction with the accompanying drawings, and it will be understood that they are described herein for the purpose of illustration and explanation and not limitation.
The embodiment of the invention provides a vehicle-mounted wireless network video data resource allocation and scheduling method, as shown in fig. 1, comprising the following steps:
step S1: acquiring a video acquisition request of a user, and determining target video data based on the video acquisition request;
step S2: acquiring a transmission node capable of transmitting data on a driving path of an automobile as a node to be configured;
step S3: segmenting the driving path based on the position of the node to be configured, acquiring a plurality of segmented routes and associating the segmented routes with the node to be configured;
step S4: determining the corresponding running time of each sectional route; and configuring target video data for the nodes to be configured associated with the sectional routes based on the driving time to form data configuration nodes.
The working principle and the beneficial effects of the technical scheme are as follows:
when a user sends a video acquisition request to a server by adopting a vehicle-mounted terminal, the server determines target video data of the user based on the video acquisition request; acquiring a driving path of an automobile through a vehicle-mounted terminal, and further determining a transmission node capable of transmitting data on the driving path as a node to be configured; the node to be configured is a transmission node waiting for receiving the configuration of the target video data; the nodes to be configured are associated with the subsection routes on the driving path, and the driving time of the subsection routes is determined, so that the target video data is configured for the associated nodes to be configured, data transmission is performed by the corresponding associated data configuration nodes when the automobile of the user drives to the corresponding subsection routes, and the speed and the efficiency of data transmission are improved.
According to the vehicle-mounted wireless network video data resource allocation and scheduling method, the target video data are reasonably allocated on each data transmission node on the driving path, so that the allocation of the video data resources is fast and reasonable, the fast and stable transmission of the vehicle-mounted wireless network video data is improved, and the user experience is improved.
In one embodiment, acquiring a transmission node capable of transmitting data on a driving path of an automobile as a node to be configured includes:
acquiring a driving path of an automobile;
acquiring a transmission node capable of transmitting data on a driving path as a node to be configured;
wherein, obtain the route of traveling of car, include:
acquiring a navigation path selected by a user as a driving path through a vehicle-mounted navigation system;
and/or the presence of a gas in the gas,
acquiring a historical driving record of an automobile;
determining a driving path based on the driving route of the automobile and the historical driving record;
and/or the presence of a gas in the gas,
acquiring the driving direction of the automobile;
acquiring a road distribution map within a preset first distance threshold value by taking the position of the automobile as the center;
based on the road map and the driving direction, a plurality of driving paths are determined.
The working principle and the beneficial effects of the technical scheme are as follows:
determining a transmission node capable of performing optimal data transmission on the automobile running on the running path by acquiring the running path of the automobile; the method comprises the following steps that a navigation path selected by a user can be directly acquired through a vehicle-mounted navigation system to serve as a driving path; the driving path can also be determined by matching the driven route of the current driving with the historical driving record of the automobile; when the driving path is not determined in the two determination manners, the driving paths of the automobiles are listed by performing path listing on the roads in the driving direction, and are arranged respectively, wherein the first distance threshold value can be set to be 10 kilometers.
In one embodiment, acquiring a transmission node capable of transmitting data on a driving path as a node to be configured includes:
acquiring a distribution diagram of transmission nodes capable of transmitting data;
mapping the driving path into a distribution map;
calculating the shortest distance from each transmission node to a driving path in the distribution diagram;
and when the shortest distance is less than or equal to a preset second distance threshold value, taking the transmission node as a node to be configured.
The working principle and the beneficial effects of the technical scheme are as follows:
the transmission nodes are screened according to the shortest distance between the transmission nodes and the driving path, and the transmission nodes capable of efficiently transmitting data of the automobile driving on the driving path are determined. Wherein the second distance threshold may be set to 1 km.
In one embodiment, segmenting the driving path based on the position of the node to be configured, acquiring a plurality of segmented routes and associating the segmented routes with the node to be configured, includes:
sampling a driving path to obtain a plurality of sampling points;
calculating a first distance value between each sampling point and each node to be configured;
grouping each sampling point based on the difference of the nodes to be configured with the minimum first distance value;
integrating and connecting all sampling points in the same group in series to form at least one sectional route;
and associating the segmented route with the nodes to be configured corresponding to the groups.
The working principle and the beneficial effects of the technical scheme are as follows:
determining a plurality of sampling points by sampling the running path, wherein the sampling points are determined by preset distance values for turning intersections, pedestrian crossings and roads among all the intersections, and the distance values can be set to be 100 meters; grouping according to the distance between the sampling point and each node to be configured; and dividing the sampling points close to the same node to be configured into the same subsection route, and associating the subsection route with the corresponding node to be configured, so that the shortest communication distance between the automobile running on the subsection route and the node to be configured is ensured, and the communication effect is further ensured.
In one embodiment, determining the travel time for each of the segmented routes comprises:
acquiring a historical driving record of an automobile;
analyzing historical driving records and determining historical driving time of a plurality of sectional routes;
determining a driving time corresponding to the segmented route based on a plurality of historical driving times;
and/or the presence of a gas in the gas,
acquiring current driving parameter data of an automobile;
acquiring a first limiting parameter and a first road condition of a current driving road of an automobile;
determining a subjective deviation factor based on the driving parameter data, the first limiting parameter and the first road condition;
acquiring a second limiting parameter and a second road condition of each sectional route;
dividing the sectional route into line units based on a second limiting parameter and a second road condition;
determining driving parameter data corresponding to each line unit based on the second limiting parameter, the second road condition and the subjective deviation coefficient of each line;
determining the driving time of each line unit based on the driving parameter data corresponding to each line unit and the distance length of each line unit;
based on the travel time of each link unit, the travel time of each segment route is determined.
The working principle and the beneficial effects of the technical scheme are as follows:
the determination of the travel time corresponding to each sectional route can be mainly performed in the following manner: the historical data analysis method can be used for determining the average value of the historical driving time of the driving on the segmented route in the historical driving record; the subjective deviation coefficient can be analyzed by integrating the current driving parameter data (driving speed), the first limiting parameter (limiting speed) of the road and the first road condition (road property, traffic flow condition of the road and the like), the driving speed of the user on each segmented route on the driving path is determined, and after the driving speed is determined, the driving time of each segmented route can be determined according to the length of the road; wherein determining a subjective deviation factor based on the driving parameter data, the first limiting parameter and the first road condition comprises: extracting characteristics of the driving parameter data, the first limiting parameter and the first road condition, and extracting a plurality of characteristic values; constructing a feature vector based on the plurality of feature values; acquiring a preset subjective coefficient judgment library; calculating the similarity between the feature vector and each judgment vector in the subjective coefficient judgment library, wherein a similarity calculation formula is as follows:
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wherein, the water-soluble polymer is a polymer,
Figure 427106DEST_PATH_IMAGE012
similarity between the feature vector and the judgment vector is obtained;
Figure 749502DEST_PATH_IMAGE013
is the first of the feature vector
Figure 297158DEST_PATH_IMAGE001
A parameter value;
Figure 388611DEST_PATH_IMAGE014
to judge the second of the vector
Figure 97941DEST_PATH_IMAGE001
A parameter value;
Figure 376476DEST_PATH_IMAGE015
the total number of the parameters of the characteristic vector or the total number of the parameters of the judgment vector; when the similarity is the maximum in the subjective coefficient judgment base and is greater than a preset threshold value (0.95), acquiring the subjective coefficient corresponding to the judgment vector corresponding to the similarity; for example: in the feature extraction link, when the feature value representing the road traffic flow condition is 1, the feature value is used for extracting the feature value representing the road traffic flow condition, and the traffic flow per hour of the road is 10 or less; when the number is 2, the traffic flow of the road per hour is 10 to 100; when the number is 3, the traffic flow of the road per hour is 100 to 1000; when 4, the traffic flow per hour of the road is 1000 or more. Further, the value rule of the feature value indicating the road property may be defined as follows: the value of the road is 1 for the road in front of the traffic light intersection; the value of the road behind the traffic light intersection is 2; the value of a road with a pedestrian crossing is 3; the value of the road of the straight-going unmanned crosswalk, station parking spot and the like is 0; and the like. Determining driving parameter data corresponding to each line unit based on the second limiting parameter, the second road condition and the subjective deviation coefficient of each line; the method comprises the following specific steps: extracting the characteristics of the second limiting parameter, the second road condition and the subjective deviation coefficient, and constructing a speed determination vector; determining driving parameter data based on the speed determination vector and a preset speed determination library; in determining the travel parameter data, the speed determination vector is subjected to similarity matching with a standard vector associated with the travel parameter data, and the travel parameter data (travel speed) is determined from the speed determination library.
In one embodiment, configuring target video data for nodes to be configured associated with a segmented route based on travel time comprises:
acquiring initial playing time of each video clip of target video data; the initial playing time is the playing time of the video clip without any fast forward operation and other operations;
acquiring the film watching habit of a viewer in the automobile; the film watching habits comprise: double speed selection, double speed adjustment of attention segments, characteristics of video segments of interest, and the like;
adjusting the initial playing time based on the film watching habit, and determining the predicted playing time interval of each video clip; for example: the viewer prefers to watch the video at double speed, namely the predicted playing time is adjusted to be one half of the initial playing time; the predicted playing time interval is an interval between the starting time and the ending time of the video clip in the target video data;
correspondingly associating each video clip with each sectional route based on the predicted playing time interval of each video clip and the interval of the driving time of each sectional route; the section of the driving time is the section from the starting time of the automobile entering the sectional route to the ending time of the automobile exiting the sectional route;
configuring the data of the target video data corresponding to each video clip on the node to be configured corresponding to the corresponding subsection route to form a data configuration node;
the method for correspondingly associating each video clip with each sectional route based on the predicted playing time interval of each video clip and the driving time interval of each sectional route comprises the following steps:
obtaining cache parameters of a video player of the vehicle-mounted terminal;
determining the cache playing time corresponding to the minimum cache data based on the cache parameters;
will be first
Figure 118036DEST_PATH_IMAGE001
The section of the travel time corresponding to each sectional route is recorded as
Figure 532837DEST_PATH_IMAGE002
Wherein, the water-soluble polymer is a polymer,
Figure 272123DEST_PATH_IMAGE003
is equal to the value of
Figure 178899DEST_PATH_IMAGE001
The driving time corresponding to each sectional route; when in use
Figure 192991DEST_PATH_IMAGE004
When the temperature of the water is higher than the set temperature,
Figure 134402DEST_PATH_IMAGE005
；
will be first
Figure 575748DEST_PATH_IMAGE001
The corresponding associated predicted playing time interval of each sectional route is recorded as
Figure 969820DEST_PATH_IMAGE006
Wherein when
Figure 787603DEST_PATH_IMAGE007
When the temperature of the water is higher than the set temperature,
Figure 849100DEST_PATH_IMAGE008
is equal to the value of
Figure 523664DEST_PATH_IMAGE001
The driving time corresponding to each sectional route; when in use
Figure 467349DEST_PATH_IMAGE004
When the temperature of the water is higher than the set temperature,
Figure 823244DEST_PATH_IMAGE009
、
Figure 473669DEST_PATH_IMAGE010
is equal to the sum of the travel time and the buffer play time corresponding to the 1 st segment route. The cache play data is configured on the first subsection route, so that accidents in the data transmission process are guaranteed, the cache gives the system to call the data for relay transmission reaction time, and the film watching experience of a user is improved; furthermore, the data in the corresponding data configuration node is divided into two parts from the second subsection route, wherein the first half part is backed up in the data configuration node corresponding to the last subsection route, and the second half part is backed up in the data node corresponding to the next subsection route; prevent the sectional roadWhen the data configuration node of the line can not complete the data transmission accident, the data configuration node corresponding to the previous subsection route and the data configuration node corresponding to the next subsection route can carry out bit complement transmission.
In one embodiment, the shortest distance of the nodes to be configured corresponding to the distance of each segmented route is calculated; when the shortest distance is greater than a preset distance threshold (for example, 1.5 kilometers), data which should be originally configured to the node to be configured corresponding to the segmented route is configured to the node to be configured, of which the shortest distance from the node to be configured corresponding to the previous distance is less than or equal to the distance threshold, so as to ensure that the distance between the data configuration node and the vehicle-mounted terminal has a better data transmission distance.
In one embodiment, the vehicle-mounted wireless network video data resource allocation and scheduling method further comprises the following steps:
when the data of the target video data configured on the data configuration node corresponding to the current driving subsection route of the automobile is transmitted to the vehicle-mounted terminal, acquiring the cache data information of the vehicle-mounted terminal in real time;
when the playing time corresponding to the cache data is less than the cache playing time, acquiring the remaining running time of the current sectional route; and data corresponding to the remaining travel time are called from the next data configuration node to the data configuration node associated with the sectional route.
The next data configuration node is used for data calling, so that the operations of fast forwarding and the like of the target video data by the viewer are guaranteed, the cache playing time is insufficient, and the personalized film watching requirements of the viewer can be met.
In one embodiment, the vehicle-mounted wireless network video data resource allocation and scheduling method further comprises the following steps:
when the automobile is parked and flamed out, access information of mobile terminal equipment which is around the vehicle-mounted terminal and is associated with the vehicle-mounted terminal is obtained;
connecting with the mobile terminal equipment based on the access information, and allocating the remaining unplayed data of the target video data to a data allocation node closest to the mobile terminal equipment; transmitted by the data configuration node to the mobile terminal device.
The working principle and the beneficial effects of the technical scheme are as follows:
after the automobile is parked and flamed out, the target of the target video data is converted to be released into the mobile terminal of the user, the user can directly start to watch the rest part of the target video data without searching the target video data through the mobile terminal, and the watching experience of the user is further improved.
The invention also provides a vehicle-mounted wireless network video data resource allocation and scheduling system, as shown in fig. 2, comprising:
the target video data determining module 1 is used for acquiring a video acquisition request of a user and determining target video data based on the video acquisition request;
the node to be configured determining module 2 is used for acquiring a transmission node capable of transmitting data on a driving path of the automobile as the node to be configured;
the segmentation association module 3 is used for segmenting the driving path based on the position of the node to be configured, acquiring a plurality of segmentation routes and associating the segmentation routes with the node to be configured;
the configuration module 4 is used for determining the corresponding running time of each sectional route; and configuring target video data for the nodes to be configured associated with the sectional routes based on the driving time to form data configuration nodes.
In one embodiment, when the to-be-configured node determination module 2 obtains a transmission node capable of transmitting data on a driving path of an automobile as the to-be-configured node, the following operations are performed:
acquiring a driving path of an automobile;
acquiring a transmission node capable of transmitting data on a driving path as a node to be configured;
wherein, obtain the route of traveling of car, include:
acquiring a navigation path selected by a user as a driving path through a vehicle-mounted navigation system;
and/or the presence of a gas in the gas,
acquiring a historical driving record of an automobile;
determining a driving path based on the driving route of the automobile and the historical driving record;
and/or the presence of a gas in the gas,
acquiring the driving direction of the automobile;
acquiring a road distribution map within a preset first distance threshold value by taking the position of the automobile as the center;
based on the road map and the driving direction, a plurality of driving paths are determined.
In one embodiment, the to-be-configured node determining module 2 obtains a transmission node capable of transmitting data on a driving path as the to-be-configured node, and performs the following operations:
acquiring a distribution diagram of transmission nodes capable of transmitting data;
mapping the driving path into a distribution map;
calculating the shortest distance from each transmission node to a driving path in the distribution diagram;
and when the shortest distance is less than or equal to a preset second distance threshold value, taking the transmission node as a node to be configured.
In one embodiment, the segmentation associating module 3 segments the driving path based on the position of the node to be configured, obtains a plurality of segmentation routes and associates the segmentation routes with the node to be configured, and performs the following operations:
sampling a driving path to obtain a plurality of sampling points;
calculating a first distance value between each sampling point and each node to be configured;
grouping each sampling point based on the difference of the nodes to be configured with the minimum first distance value;
integrating and connecting all sampling points in the same group in series to form at least one sectional route;
and associating the segmented route with the nodes to be configured corresponding to the groups.
In one embodiment, the configuration module 4 determines the travel time corresponding to each of the segmented routes, and performs the following operations:
acquiring a historical driving record of an automobile;
analyzing historical driving records and determining historical driving time of a plurality of sectional routes;
determining a driving time corresponding to the segmented route based on a plurality of historical driving times;
and/or the presence of a gas in the gas,
acquiring current driving parameter data of an automobile;
acquiring a first limiting parameter and a first road condition of a current driving road of an automobile;
determining a subjective deviation factor based on the driving parameter data, the first limiting parameter and the first road condition;
acquiring a second limiting parameter and a second road condition of each sectional route;
dividing the sectional route into line units based on a second limiting parameter and a second road condition;
determining driving parameter data corresponding to each line unit based on the second limiting parameter, the second road condition and the subjective deviation coefficient of each line;
determining the driving time of each line unit based on the driving parameter data corresponding to each line unit and the distance length of each line unit;
based on the travel time of each link unit, the travel time of each segment route is determined.
In one embodiment, the configuration module 4 configures target video data for nodes to be configured associated with the segment routes based on the travel time to form data configuration nodes, and performs the following operations:
acquiring initial playing time of each video clip of target video data;
acquiring the film watching habit of a viewer in the automobile;
adjusting the initial playing time based on the film watching habit, and determining the predicted playing time interval of each video clip;
correspondingly associating each video clip with each sectional route based on the predicted playing time interval of each video clip and the interval of the driving time of each sectional route;
configuring the data of the target video data corresponding to each video clip on the node to be configured corresponding to the corresponding subsection route to form a data configuration node;
the method for correspondingly associating each video clip with each sectional route based on the predicted playing time interval of each video clip and the driving time interval of each sectional route comprises the following steps:
obtaining cache parameters of a video player of the vehicle-mounted terminal;
determining the cache playing time corresponding to the minimum cache data based on the cache parameters;
will be first
Figure 522396DEST_PATH_IMAGE001
The section of the travel time corresponding to each sectional route is recorded as
Figure 687798DEST_PATH_IMAGE002
Wherein, the water-soluble polymer is a polymer,
Figure 722750DEST_PATH_IMAGE003
is equal to the value of
Figure 352315DEST_PATH_IMAGE001
The driving time corresponding to each sectional route; when in use
Figure 775206DEST_PATH_IMAGE004
When the temperature of the water is higher than the set temperature,
Figure 427904DEST_PATH_IMAGE005
；
will be first
Figure 968DEST_PATH_IMAGE001
The corresponding associated predicted playing time interval of each sectional route is recorded as
Figure 750618DEST_PATH_IMAGE006
Wherein when
Figure 16514DEST_PATH_IMAGE007
When the temperature of the water is higher than the set temperature,
Figure 953246DEST_PATH_IMAGE008
is equal to the value of
Figure 595580DEST_PATH_IMAGE001
The driving time corresponding to each sectional route; when in use
Figure 199737DEST_PATH_IMAGE004
When the temperature of the water is higher than the set temperature,
Figure 433272DEST_PATH_IMAGE009
、
Figure 998246DEST_PATH_IMAGE010
is equal to the sum of the travel time and the buffer play time corresponding to the 1 st segment route.
In one embodiment, the vehicle-mounted wireless network video data resource allocation and scheduling system further comprises: a scheduling module;
the scheduling module performs the following operations:
when the data of the target video data configured on the data configuration node corresponding to the current driving subsection route of the automobile is transmitted to the vehicle-mounted terminal, acquiring the cache data information of the vehicle-mounted terminal in real time;
when the playing time corresponding to the cache data is less than the cache playing time, acquiring the remaining running time of the current sectional route; and data corresponding to the remaining travel time are called from the next data configuration node to the data configuration node associated with the sectional route.
In one embodiment, the vehicle-mounted wireless network video data resource allocation and scheduling system further comprises: a target conversion module;
the target conversion module performs the following operations:
when the automobile is parked and flamed out, access information of mobile terminal equipment which is around the vehicle-mounted terminal and is associated with the vehicle-mounted terminal is obtained;
connecting with the mobile terminal equipment based on the access information, and allocating the remaining unplayed data of the target video data to a data allocation node closest to the mobile terminal equipment; transmitted by the data configuration node to the mobile terminal device.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.

Claims (10)

1. A vehicle-mounted wireless network video data resource allocation and scheduling method is characterized by comprising the following steps:
acquiring a video acquisition request of a user, and determining target video data based on the video acquisition request;
acquiring a transmission node capable of transmitting data on a driving path of an automobile as a node to be configured;
segmenting the driving path based on the position of the node to be configured, acquiring a plurality of segmented routes and associating the segmented routes with the node to be configured;
determining the corresponding running time of each segmented route; and configuring the target video data for the node to be configured associated with the segmented route based on the driving time to form a data configuration node.
2. The vehicle-mounted wireless network video data resource allocation and scheduling method of claim 1, wherein the acquiring the transmission node capable of transmitting data on the driving path of the vehicle as the node to be allocated comprises:
acquiring a driving path of an automobile;
acquiring a transmission node capable of transmitting data on the driving path as a node to be configured;
wherein, the acquiring of the driving path of the automobile comprises the following steps:
acquiring a navigation path selected by a user as the driving path through a vehicle-mounted navigation system;
and/or the presence of a gas in the gas,
acquiring a historical driving record of an automobile;
determining the driving path based on the driving route of the automobile in the current driving and the historical driving record;
and/or the presence of a gas in the gas,
acquiring the driving direction of the automobile;
acquiring a road distribution map within a preset first distance threshold value by taking the position of the automobile as a center;
determining a plurality of the travel paths based on the road map and the travel direction.
3. The vehicle-mounted wireless network video data resource allocation and scheduling method of claim 2, wherein the acquiring the transmission node capable of transmitting data on the driving path as the node to be allocated comprises:
acquiring a distribution diagram of transmission nodes capable of transmitting data;
mapping the travel path into the profile;
calculating the shortest distance from each transmission node in the distribution diagram to the driving path;
and when the shortest distance is less than or equal to a preset second distance threshold value, taking the transmission node as the node to be configured.
4. The on-vehicle wireless network video data resource allocation and scheduling method of claim 1, wherein the segmenting the driving path based on the position of the node to be configured, obtaining a plurality of segmentation routes and associating the segmentation routes with the node to be configured comprises:
sampling the driving path to obtain a plurality of sampling points;
calculating a first distance value between each sampling point and each node to be configured;
grouping the sampling points based on the difference of the nodes to be configured with the minimum first distance value;
integrating and connecting all the sampling points in the same group in series to form at least one subsection route;
and associating the subsection route with the node to be configured corresponding to the grouping.
5. The vehicle-mounted wireless network video data resource allocation and scheduling method of claim 1, wherein the determining the driving time corresponding to each segmented route comprises:
acquiring a historical driving record of an automobile;
analyzing the historical driving records and determining the historical driving time of a plurality of the segmented routes;
determining the driving time corresponding to the segmented route based on a plurality of historical driving times;
and/or the presence of a gas in the gas,
acquiring current driving parameter data of an automobile;
acquiring a first limiting parameter and a first road condition of a current driving road of an automobile;
determining a subjective deviation factor based on the driving parameter data, the first limiting parameter and the first road condition;
acquiring a second limiting parameter and a second road condition of each segmented route;
dividing the sectional route into individual route units based on the second limiting parameter and the second road condition;
determining driving parameter data corresponding to each line unit based on the second limiting parameter, the second road condition and the subjective deviation coefficient of each line;
determining the driving time of each line unit based on the driving parameter data corresponding to each line unit and the distance length of each line unit;
and determining the driving time of each sectional route based on the driving time of each line unit.
6. The on-board wireless network video data resource configuration and scheduling method of claim 1, wherein the configuring the target video data for the node to be configured associated with the segment route based on the travel time comprises:
acquiring initial playing time of each video clip of the target video data;
acquiring the film watching habit of a viewer in the automobile;
adjusting the initial playing time based on the film watching habit, and determining a predicted playing time interval of each video clip;
correspondingly associating each video clip with each segmented route based on the predicted playing time interval of each video clip and the interval of the driving time of each segmented route;
configuring the data of the target video data corresponding to each video clip on the node to be configured corresponding to the corresponding subsection route to form a data configuration node;
wherein, correspondingly associating each of the video clips with each of the segment routes based on a predicted playing time interval of each of the video clips and the travel time interval of each of the segment routes comprises:
obtaining cache parameters of a video player of the vehicle-mounted terminal;
determining the cache playing time corresponding to the minimum cache data based on the cache parameters;
will be first
Figure 514034DEST_PATH_IMAGE001
The section of the travel time corresponding to each subsection route is recorded as
Figure 238276DEST_PATH_IMAGE002
Wherein, the water-soluble polymer is a polymer,
Figure 845975DEST_PATH_IMAGE003
is equal to the value of
Figure 22878DEST_PATH_IMAGE001
The travel time corresponding to each of the segmented routes; when in use
Figure 741436DEST_PATH_IMAGE004
When the temperature of the water is higher than the set temperature,
Figure 54605DEST_PATH_IMAGE005
；
will be first
Figure 98785DEST_PATH_IMAGE001
The corresponding associated predicted playing time interval of each subsection route is recorded as
Figure 762984DEST_PATH_IMAGE006
Wherein when
Figure 285232DEST_PATH_IMAGE007
When the temperature of the water is higher than the set temperature,
Figure 452908DEST_PATH_IMAGE008
is equal to the value of
Figure 667989DEST_PATH_IMAGE001
The travel time corresponding to each of the segmented routes; when in use
Figure 350643DEST_PATH_IMAGE004
When the temperature of the water is higher than the set temperature,
Figure 676582DEST_PATH_IMAGE009
、
Figure 964344DEST_PATH_IMAGE010
is equal to the sum of the travel time and the cache play time corresponding to the 1 st of the segmented routes.
7. The on-vehicle wireless network video data resource allocation and scheduling method of claim 6, further comprising:
when the data of the target video data configured on the data configuration node corresponding to the segmented route where the automobile currently runs are transmitted to the vehicle-mounted terminal, acquiring cache data information of the vehicle-mounted terminal in real time;
when the playing time corresponding to the cache data is less than the cache playing time, obtaining the current remaining running time of the segmented route; and calling data corresponding to the remaining travel time from the next data configuration node to the data configuration node associated with the segmented route.
8. The on-vehicle wireless network video data resource allocation and scheduling method of claim 1, further comprising:
when the automobile is parked and flamed out, acquiring access information of mobile terminal equipment which is around the vehicle-mounted terminal and is associated with the vehicle-mounted terminal;
connecting with the mobile terminal equipment based on the access information, and allocating the remaining unplayed data of the target video data to the data allocation node closest to the mobile terminal equipment; and transmitting the data configuration node to the mobile terminal equipment.
9. A vehicle-mounted wireless network video data resource allocation and scheduling system is characterized by comprising:
the target video data determining module is used for acquiring a video acquisition request of a user and determining target video data based on the video acquisition request;
the device comprises a to-be-configured node determining module, a to-be-configured node determining module and a configuring module, wherein the to-be-configured node determining module is used for acquiring transmission nodes capable of transmitting data on a driving path of an automobile as to-be-configured nodes;
the segmentation association module is used for segmenting the driving path based on the position of the node to be configured, acquiring a plurality of segmentation routes and associating the segmentation routes with the node to be configured;
the configuration module is used for determining the corresponding running time of each segmented route; and configuring the target video data for the node to be configured associated with the segmented route based on the driving time to form a data configuration node.
10. The vehicle-mounted wireless network video data resource allocation and scheduling system of claim 9, wherein when the node to be allocated determining module obtains a transmission node capable of transmitting data on a driving path of a vehicle as the node to be allocated, the following operations are performed:
acquiring a driving path of an automobile;
acquiring a transmission node capable of transmitting data on the driving path as a node to be configured;
wherein, the acquiring of the driving path of the automobile comprises the following steps:
acquiring a navigation path selected by a user as the driving path through a vehicle-mounted navigation system;
and/or the presence of a gas in the gas,
acquiring a historical driving record of an automobile;
determining the driving path based on the driving route of the automobile in the current driving and the historical driving record;
and/or the presence of a gas in the gas,
acquiring the driving direction of the automobile;
acquiring a road distribution map within a preset first distance threshold value by taking the position of the automobile as a center;
determining a plurality of the travel paths based on the road map and the travel direction.
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