CN109600453B - Distributed virtual reality content distribution method and system - Google Patents
Distributed virtual reality content distribution method and system Download PDFInfo
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- CN109600453B CN109600453B CN201910123246.0A CN201910123246A CN109600453B CN 109600453 B CN109600453 B CN 109600453B CN 201910123246 A CN201910123246 A CN 201910123246A CN 109600453 B CN109600453 B CN 109600453B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/01—Protocols
- H04L67/131—Protocols for games, networked simulations or virtual reality
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/01—Protocols
- H04L67/02—Protocols based on web technology, e.g. hypertext transfer protocol [HTTP]
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/01—Protocols
- H04L67/06—Protocols specially adapted for file transfer, e.g. file transfer protocol [FTP]
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/01—Protocols
- H04L67/10—Protocols in which an application is distributed across nodes in the network
- H04L67/104—Peer-to-peer [P2P] networks
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Abstract
The invention discloses a distributed virtual reality content distribution method and a system, wherein the method comprises the steps that a user request point sends a target file downloading request; the user request point is connected with the index server through a peer-to-peer network transmission protocol and randomly returns a content node which is downloading the target file according to the target file downloading request; the user request point downloads the target file from the content node. The VR experience store serves as a user request point and serves as a content node, a file downloading request can be sent to request downloading of a target file, the file is downloaded and serves as a content node of other request points, and the server and bandwidth cost is greatly reduced through mutual transmission distributed by a plurality of nodes, the downloading speed is high, and the user experience is better.
Description
Technical Field
The invention belongs to the technical field of virtual reality, and particularly relates to a distributed virtual reality content distribution method and system.
Background
With the development of Virtual Reality (VR for short) and internet technology, Distributed Virtual Reality (DVR for short) also called Distributed Virtual Environments (DVE for short) arises in order to meet the interaction requirements between different geographically and widely Distributed computing terminals.
The method comprises the steps that computing terminals distributed in different regions geographically build a virtual environment locally, and then interaction or roaming is carried out in a shared three-dimensional virtual environment by controlling virtual node avatars (avatars, virtual people representing real users).
At present, VR experience stores develop rapidly, in order to enable users to obtain better use experiences, VR manufacturers can provide experience contents such as videos, games, animations and the like, and update or upgrade the experience contents regularly or irregularly, and then each store downloads, updates or upgrades distributed virtual reality contents, but because the distributed virtual reality contents have large data volume, the bandwidth pressure is large and the downloading speed is slow under the condition that the experience stores are many.
Disclosure of Invention
The invention aims to provide a distributed virtual reality content distribution method and system, which can effectively solve the technical defects.
In order to achieve the purpose, the technical scheme of the invention is as follows:
a distributed virtual reality content distribution method is suitable for a VR experience store, wherein the VR experience store is a user request point or a content node, and the method comprises the following steps:
a user request point sends a target file downloading request;
the user request point is connected with the index server through a peer-to-peer network transmission protocol and randomly returns a content node which is downloading the target file according to the target file downloading request;
the user request point downloads the target file from the content node.
Further, the sending of the file downloading request by the user request point specifically includes: the user request point sends file download request to the index server through hypertext transfer protocol or datagram transfer protocol.
Further, the file downloading request includes the private information of the user request point, the name of the target file, and the hash value of the target file.
Further, the content node that is downloading the target file and is randomly returned by the index server according to the target file downloading request is specifically:
the index server searches an internal data dictionary according to the hash value of the target file in the file downloading request;
and according to the private information of the user request point, randomly returning the content node information of the searched content node downloading the target file to the user request point.
Further, before the user requests the point to download the target file from the content node, the method further comprises:
judging whether the content nodes downloading the target file comprise one or more content nodes, and when a plurality of content nodes are downloading the target file, further downloading the target file
The user request point sends a current downloading completion progress request of the target file to the plurality of content nodes;
the user request point cuts the target file into a plurality of subfiles according to the current downloading completion progress of the plurality of content nodes;
the user request point downloads corresponding subfiles from the content nodes respectively;
the plurality of subfiles comprise a first subfile and a second subfile, wherein the first subfile is a subfile which is downloaded by a node in the content nodes; the second subfile is a subfile which has not started to be downloaded by any content node;
the first subfile is transmitted to a user request point through a peer-to-peer network transmission protocol by a content node which just completes the downloading of the subfile;
the second subfile is transmitted to the user request point through the peer-to-peer network transmission protocol by the content node which starts to download the second subfile and completes the transmission of the first subfile to the user request point firstly.
Further, after the user request point sends the target file downloading request, the method also comprises the following steps of judging whether the user request point is connected with the index server:
if yes, continuing the subsequent steps;
if not, the user request point inquires the content node downloading the target file through the distributed hash table network and obtains the content node information, then the user request point is connected with the content node through a peer-to-peer network transmission protocol, and the user request point further downloads the target file from the content node.
In order to solve the above technical problem, an embodiment of the present invention further provides a distributed virtual reality content distribution system, which includes an index server, a plurality of user request points and content nodes connected to the index server;
the user request point is used for sending a target file downloading request;
the index server is used for receiving the target file downloading request and randomly returning the content node information of the content node downloading the target file according to the target file downloading request;
the user request point is also used for connecting the content node through a peer-to-peer network transmission protocol and downloading the target file from the content node.
Further, the user request point is further configured to determine whether one or more content nodes are included, and when there are multiple content nodes downloading the target file, the user request point further determines whether the target file is downloaded by the multiple content nodes
Sending a current downloading completion progress request of the target file to the plurality of content nodes;
cutting the target file into a plurality of subfiles according to the current downloading completion progress of the plurality of content nodes;
downloading corresponding subfiles from the plurality of content nodes respectively;
the plurality of subfiles comprise a first subfile and a second subfile, wherein the first subfile is a subfile which is downloaded by a node in the content nodes; the second subfile is a subfile which has not started to be downloaded by any content node;
the first subfile is transmitted to a user request point through a peer-to-peer network transmission protocol by a content node which just completes the downloading of the subfile;
the second subfile is transmitted to the user request point through the peer-to-peer network transmission protocol by the content node which starts to download the second subfile and completes the transmission of the first subfile to the user request point firstly.
Furthermore, the user request point is also used for judging whether to connect with the index server after sending a target file downloading request at the user request point; when the user request point is not connected with the index server, the content node downloading the target file is inquired through the distributed hash table network and the content node information is obtained, then the content node is connected through a peer-to-peer network transmission protocol, and the target file is further downloaded from the content node.
Based on the above technical solution, the embodiments of the present invention can at least produce the following technical effects:
1. the VR experience store serves as a user request point and serves as a content node, a file downloading request can be sent to request downloading of a target file, the file is downloaded and serves as a content node of other request points, and the server and bandwidth cost is greatly reduced through mutual transmission distributed by a plurality of nodes, the downloading speed is high, and the user experience is better.
2. Compared with the traditional method which depends on a central node, the index server, the user request node and the content node in the distributed virtual reality content distribution system are equal nodes, and the anti-attack and fault capability is better.
Drawings
Fig. 1 is a schematic flow chart of a distributed virtual reality content distribution method according to an embodiment of the present invention;
fig. 2 is a flowchart illustrating a distributed virtual reality content distribution method according to an embodiment of the present invention;
fig. 3 is a flowchart illustrating a distributed virtual reality content distribution method according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of a distributed virtual reality content distribution system according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, 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 some, but not all, embodiments of the present invention. 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.
The embodiments of the present invention will be described in further detail with reference to the drawings attached hereto. It is to be understood that the embodiments described herein are merely illustrative and explanatory of the invention and are not restrictive thereof.
Example 1
As shown in fig. 1, a distributed virtual reality content distribution method according to an embodiment of the present invention is suitable for a VR experiential store, where the VR experiential store is a user request point or a content node, and the method includes:
s100: a user request point sends a target file downloading request;
the file downloading request comprises the private information of the user request point, the name of the target file and the hash value of the target file.
The sending of the file downloading request by the user request point specifically comprises the following steps: the user request point sends file download request to the index server through hypertext transfer protocol or datagram transfer protocol.
S200: the user request point is connected with the index server through a peer-to-peer network transmission protocol and randomly returns a content node which is downloading the target file according to the target file downloading request;
the content node information of the content node downloading the target file, which is randomly returned by the index server according to the target file downloading request, specifically comprises:
the index server searches an internal data dictionary according to the hash value of the target file in the file downloading request;
and according to the private information of the user request point, randomly returning the content node information of the searched content node downloading the target file to the user request point.
S300: the user request point downloads the target file from the content node.
Preferably, as shown in fig. 2, before the user requests the point to download the target file from the content node, the method further includes:
s400: judging whether the content nodes downloading the target file comprise one or more content nodes, and when a plurality of content nodes are downloading the target file, further downloading the target file
S410: the user request point sends a current downloading completion progress request of the target file to the plurality of content nodes;
s420: and the user request point cuts the target file into a plurality of subfiles according to the current downloading completion progress of the plurality of content nodes. The plurality of subfiles comprise a first subfile and a second subfile, wherein the first subfile is a subfile which is downloaded by a node in the content nodes; the second subfile is a subfile for which no content node has started downloading.
For example, if 4 content nodes are downloading the target file, respectively content node A, B, C, D, and the current download completion progress of each content node is 15%, 60%, 70%, 95%, respectively, the target file is cut into five subfiles, i.e., [0-15], [16-60], [61-70], [71-95], [96-100 ].
Then [0-15], [16-60], [61-70], [71-95] is the first subfile and [96-100] is the second subfile.
S430: the user request point downloads corresponding subfiles from the content nodes respectively;
the first subfile is transmitted to the user request point through the peer-to-peer network transmission protocol corresponding to the content node which just completes the downloading of the subfile.
Referring to the above example, sub-files [0-15], [16-60], [61-70], [71-95] correspond to content node A, B, C, D transmitted to the user request point via a peer-to-peer network transport protocol, respectively.
Further, the second subfile transmits data to the user request point from the content node where the first subfile, which has started downloading the second subfile and completed its responsibility first, transmits the downloaded content to the user request point. That is, the second subfile [96-100] is transmitted to the user request point from the content node of the content nodes A, B, C, D which first completed transmitting [0-15], [16-60], [61-70], [71-95] subfiles, and has started downloading the second subfile. If node C in content node A, B, C, D completes 61-70 first and node C has begun downloading the second subfile 96-100 at this point, the second subfile 96-100 is transmitted by content node C to the user request point.
As shown in fig. 3, preferably, after the sending of the target file download request at the user request point, the method further includes: s500: judging whether the user request point is connected with the index server:
if yes, continuing the subsequent steps;
if not, go to step S510.
S510: the user request point inquires the content node downloading the target file through the distributed hash table network and obtains the content node information, then the user request point is connected with the content node through a peer-to-peer network transmission protocol, and the user request point further downloads the target file from the content node.
In the embodiment of the invention, the transmission protocol is also in a continuous change, and the available transmission node information can be obtained through a hypertext transfer protocol (HTTP) and a datagram protocol (UDP), and also can be obtained through a distributed hash table network query (DHT) method, so that the file downloading application is more flexible, and the downloading experience of a user point is improved.
The VR experience store serves as a user request point and serves as a content node, a file downloading request can be sent to request downloading of a target file, the file is downloaded and serves as a content node of other request points, and the server and bandwidth cost is greatly reduced through mutual transmission distributed by a plurality of nodes, the downloading speed is high, and the user experience is better.
Compared with the traditional method which depends on a central node, the index server, the user request node and the content node in the distributed virtual reality content distribution system are equal nodes, and the anti-attack and fault capability is better.
Example 2
As shown in fig. 4, an embodiment of the present invention further provides a distributed virtual reality content distribution system, which includes an index server, a plurality of user request points and content nodes connected to the index server;
the user request point is used for sending a target file downloading request;
the index server is used for receiving the target file downloading request and randomly returning the content node information of the content node downloading the target file according to the target file downloading request;
the user request point is also used for connecting the content node through a peer-to-peer network transmission protocol and downloading the target file from the content node.
Further, the user request point is further configured to determine whether one or more content nodes are included, and when there are multiple content nodes downloading the target file, the user request point further determines whether the target file is downloaded by the multiple content nodes
Sending a current downloading completion progress request of the target file to the plurality of content nodes;
cutting the target file into a plurality of subfiles according to the current downloading completion progress of the plurality of content nodes;
downloading corresponding subfiles from the plurality of content nodes respectively;
and each subfile is correspondingly transmitted to a user request point by a content node which downloads the subfile through a peer-to-peer network transmission protocol.
Furthermore, the user request point is also used for judging whether to connect with the index server after sending a target file downloading request at the user request point; when the user request point is not connected with the index server, the content node downloading the target file is inquired through the distributed hash table network and the content node information is obtained, then the content node is connected through a peer-to-peer network transmission protocol, and the target file is further downloaded from the content node.
The VR experience store serves as a user request point and serves as a content node, a file downloading request can be sent to request downloading of a target file, the file is downloaded and serves as a content node of other request points, and the server and bandwidth cost is greatly reduced through mutual transmission distributed by a plurality of nodes, the downloading speed is high, and the user experience is better.
Compared with the traditional method which depends on a central node, the index server, the user request node and the content node in the distributed virtual reality content distribution system are equal nodes, and the anti-attack and fault capability is better.
As will be appreciated by one skilled in the art, embodiments of the present invention may be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present invention may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
The present invention is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
While preferred embodiments of the present invention have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including preferred embodiments and all such alterations and modifications as fall within the scope of the invention.
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 (7)
1. A distributed virtual reality content distribution method is suitable for a VR experience store, the VR experience store is a user request point or a content node, and the method comprises the following steps:
a user request point sends a target file downloading request;
the user request point is connected with the index server through a peer-to-peer network transmission protocol and randomly returns a content node which is downloading the target file according to the target file downloading request;
judging whether the content nodes downloading the target file comprise one or more content nodes, and when a plurality of content nodes are downloading the target file, further downloading the target file
The user request point sends a current downloading completion progress request of the target file to the plurality of content nodes;
the user request point cuts the target file into a plurality of subfiles according to the current downloading completion progress of the plurality of content nodes;
the user request point downloads corresponding subfiles from the content nodes respectively;
the plurality of subfiles comprise a first subfile and a second subfile, wherein the first subfile is a subfile which is downloaded by a node in the content nodes; the second subfile is a subfile which has not started to be downloaded by any content node;
the first subfile is transmitted to a user request point through a peer-to-peer network transmission protocol corresponding to a content node which just completes downloading of the first subfile;
the second subfile is transmitted to the user request point by the content node which starts to download the second subfile and finishes the responsibility of the second subfile firstly and transmits and downloads the first subfile to the user request point through a peer-to-peer network transmission protocol;
the user request point downloads the target file from the content node.
2. The distributed virtual reality content distribution method according to claim 1, wherein: the file downloading request sent by the user request point specifically comprises the following steps: the user request point sends file download request to the index server through hypertext transfer protocol or datagram transfer protocol.
3. The distributed virtual reality content distribution method according to claim 1, wherein: the file downloading request comprises the private information of the user request point, the name of the target file and the hash value of the target file.
4. The distributed virtual reality content distribution method according to claim 3, wherein: the content node which is randomly returned by the index server according to the target file downloading request and is downloading the target file is specifically:
the index server searches an internal data dictionary according to the hash value of the target file in the file downloading request;
and according to the private information of the user request point, randomly returning the content node information of the searched content node downloading the target file to the user request point.
5. The distributed virtual reality content distribution method according to claim 1, further comprising, after the sending of the target file download request at the user request point: judging whether the user request point is connected with the index server;
if yes, continuing the subsequent steps;
if not, the user request point inquires the content node downloading the target file through the distributed hash table network and obtains the content node information, then the user request point is connected with the content node through a peer-to-peer network transmission protocol, and the user request point further downloads the target file from the content node.
6. A distributed virtual reality content distribution system is characterized by comprising an index server, a plurality of user request points and content nodes, wherein the user request points and the content nodes are connected with the index server;
the user request point is used for sending a target file downloading request;
the index server is used for receiving the target file downloading request and randomly returning the content node information of the content node downloading the target file according to the target file downloading request;
the user request point is also used for judging whether one or more content nodes downloading the target file exist, and when a plurality of content nodes are downloading the target file, the user request point further judges whether the content nodes downloading the target file exist
Sending a current downloading completion progress request of the target file to the plurality of content nodes;
cutting the target file into a plurality of subfiles according to the current downloading completion progress of the plurality of content nodes;
downloading corresponding subfiles from the plurality of content nodes respectively;
the plurality of subfiles comprise a first subfile and a second subfile, wherein the first subfile is a subfile which is downloaded by a node in the content nodes; the second subfile is a subfile which has not started to be downloaded by any content node;
the first subfile is transmitted to a user request point through a peer-to-peer network transmission protocol corresponding to a content node which just completes downloading of the first subfile;
the second subfile is transmitted to the user request point by the content node which starts to download the second subfile and finishes the responsibility of the second subfile firstly and transmits and downloads the first subfile to the user request point through a peer-to-peer network transmission protocol;
the user request point is also used for connecting the content node through a peer-to-peer network transmission protocol and downloading the target file from the content node.
7. The distributed virtual reality content distribution system of claim 6, wherein:
the user request point is also used for judging whether to be connected with the index server after the user request point sends a target file downloading request; when the user request point is not connected with the index server, the content node downloading the target file is inquired through the distributed hash table network and the content node information is obtained, then the content node is connected through a peer-to-peer network transmission protocol, and the target file is further downloaded from the content node.
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