CN101820434A - Transmission method, system and peer nodes of peer network media - Google Patents

Abstract

The embodiment of the present invention discloses a peer-to-peer network media transmission method, which includes: receiving a media content request from a requesting terminal; according to the media content request, acquiring a metric identifier related to the media content requested by the requesting terminal; The metric identifier bears the received media content request, and sends the media content request containing the metric identifier to the content source terminal, so as to request the content source terminal to adopt a peer-to-peer transmission mode according to the metric identifier Or transmit the media content requested by the requesting terminal in a direct transmission manner between the content source terminal and the requesting terminal. The peer-to-peer network media transmission method disclosed in the embodiment of the present invention can realize the complementary advantages of the two media content transmission modes of peer-to-peer node transfer and direct connection between users. The embodiment of the invention further discloses a peer-to-peer network media transmission system and a peer-to-peer node.

Description

Peer-to-peer network media transmission method, system and peer node

technical field

The present invention mainly relates to the technical field of communication, in particular, to a peer-to-peer network (P2P Network, P2P Network) media transmission method and system, and a peer-to-peer node for the peer-to-peer network.

Background technique

P2P network technology is a communication technology in which all parties in the communication network act as clients/servers, communicate or cooperate directly, and share resources including processing power, storage space and data with each other.

The P2P network based on the peer-to-peer node-user terminal (Peer-Client) architecture is composed of peer-to-peer nodes to form a P2P overlay network (P2P Overlay), and the user terminal, including the terminal that provides media content (ie, the content source terminal) and the requested The terminal of the media content (that is, the requesting terminal) is directly connected to the corresponding peer node and publishes and receives the media content through the peer node.

When the requesting terminal requests media content, first, the first peer node on the requesting terminal side searches for the required content in the P2P network according to the media content request sent by the requesting terminal, and obtains the address of the second peer node on the content source terminal side information; secondly, the first peer node transmits the media content request to the second peer node; again, the second peer node forwards the media content request to the content source terminal; finally, The content source terminal responds to the media content request, and provides the corresponding media content to the requesting terminal.

The media content transmission from the content source terminal to the requesting terminal may be through a direct transmission mode between users or a transfer mode through a peer-to-peer node. These two transmission methods have their own advantages. Therefore, how to optimize the existing media transmission methods and realize the complementary advantages of the above two transmission methods has gradually become a concern of the industry.

Contents of the invention

In view of the above problems, embodiments of the present invention provide a method and system for media transmission in a peer-to-peer network, and further provide a peer node for a peer-to-peer network.

The peer-to-peer network media transmission method provided by the embodiment of the present invention includes: receiving a media content request from a requesting terminal; according to the media content request, acquiring a metric identifier related to the media content requested by the requesting terminal, the metric identifier It is used to represent one or more combinations of the popularity degree of the media content requested by the requesting terminal, the security authority or the load degree of the relevant peer node; the metric identification is carried to the received media content request, and will contain The media content request identified by the measurement is sent to the content source terminal, so as to request the content source terminal to send the request in a peer-to-peer transmission mode or a direct transmission mode between the content source terminal and the requesting terminal according to the measurement identification The media content requested by the terminal.

The peer-to-peer network media transmission system provided by the embodiment of the present invention includes: a peer node, which is configured to receive a media content request from a requesting terminal, obtain a metric identifier related to the media content requested by the requesting terminal, and carry it to the A media content request received, wherein the metric identification is used to represent one or more combinations of the degree of popularity of the media content requested by the requesting terminal, the security authority, or the load level of the relevant peer node; the content source terminal, which It is used to receive the media content request provided by the peer node that includes the metric identifier, and transmit the media content request in a peer-to-peer transfer mode or a direct transmission mode between the content source terminal and the requesting terminal according to the metric ID The media content requested by the requesting terminal is sent to the requesting terminal.

The peer-to-peer node provided by the embodiment of the present invention includes: a media request receiving module, which is used to receive a media content request from a requesting terminal; a metric identifier obtaining module, which is used to obtain a metric related to the media content requested by the requesting terminal Identification, the metric identification is used to represent one or more combinations of the popularity of the media content requested by the requesting terminal, the security authority, or the load level of the relevant peer node; a media request sending module, which is used to send the The metric identifier and the media content request are sent to the content source terminal to request the content source terminal to send the media content with the media content in a peer-to-peer transmission mode or a direct transmission mode between the content source terminal and the requesting terminal according to the metric identifier. Request the corresponding media content.

The peer-to-peer network media transmission method and system described in the embodiments of the present invention selects the corresponding transmission mode to transmit the media content according to the measurement identifier used to represent the relevant statistical information of the media content, for example, when the media content is a popular content and requires security When monitoring, or when the load of the relevant peer nodes is normal, the transmission method of transferring through the peer nodes and performing stream replication as needed is adopted, and when the media content is unpopular, does not require security monitoring, or the load of the relevant peer nodes is overloaded, the user through direct transmission. Thus, the embodiments of the present invention realize the complementary advantages of the two media content transmission modes of peer-to-peer node transfer and direct connection between users, effectively optimize and smooth the traffic in the P2P network, and improve the efficiency of media content transmission.

Description of drawings

FIG. 1 is a flowchart of a P2P network media transmission method provided by an embodiment of the present invention.

FIG. 2 is a signaling interaction diagram of a specific embodiment of the P2P network media transmission method of the present invention when the media content is popular content.

FIG. 3 is a signaling interaction diagram when the media content is an unpopular content in a specific embodiment of the P2P network media transmission method of the present invention.

FIG. 4 is a schematic structural diagram of Embodiment 1 of the P2P network media transmission system of the present invention.

FIG. 5 is a schematic structural diagram of Embodiment 2 of the P2P network media transmission system of the present invention.

FIG. 6 is a schematic structural diagram of a peer-to-peer node embodiment in the present invention.

Detailed ways

The inventor found through analysis that the transmission method through peer nodes has its advantages. For example, during the transmission process, the peer nodes used to transfer media content can be used to copy the media content and provide the copied content to other User terminals that request the same media content, thereby reducing repeated traffic in the network, can also perform security monitoring on media content with high security rights during the transfer process of media content through the peer node, thereby reducing the risk of malicious dissemination of media content Questions and more. However, using this transmission method may cause the corresponding peer node to be overloaded and affect the transmission efficiency. The use of direct transmission between users also has its advantages. For example, it does not need to be transferred through peer nodes during the transmission process, so it does not occupy too much P2P network resources, thereby improving transmission efficiency.

On the basis of analyzing the respective advantages of the above two transmission methods, an embodiment of the present invention provides a P2P network media transmission method, which can realize the complementary advantages of the above two transmission methods. The P2P network may be a P2P network based on a Peer-Client (Peer-Client) architecture. Referring to Fig. 1, when a user terminal requesting media content (hereinafter referred to as a requesting terminal) requests corresponding media content from a user terminal providing media content (hereinafter referred to as a content source terminal) in a P2P network, first, the requesting terminal side A peer node (hereinafter referred to as a requesting node) receives a media content request from a requesting terminal; secondly, the requesting node obtains a metric identifier related to the media content requested by the requesting terminal according to the media content request, wherein the The metric identifier is used to represent one or more combinations of the popularity of the media content requested by the requesting terminal, the security authority, or the load level of the relevant peer node; finally, the requesting node carries the metric identifier to the received media content request, and send the media content request containing the metric identifier to the content source terminal, so as to request the content source terminal to adopt the transmission mode of peer-to-peer node relay or between the content source terminal and the requesting terminal according to the metric identifier The media content requested by the requesting terminal is sent in a direct transmission manner.

Further, for example, when the metric identifier indicates the popularity of the media content, if the access statistic of the media content exceeds a predetermined reference value, the metric identifier indicates that the media content is a popular content, then It can be correspondingly recorded as H-tag=1; and if the access statistic of the media content is lower than or equal to the predetermined reference value, the metric indicator indicates that the media content is unpopular content, then it can be correspondingly recorded as H-tag=0. For another example, when the metric identifier indicates the security authority of the media content, if the media content needs to be monitored safely, the metric identifier can be recorded as H-tag=1; otherwise, it can be recorded as H-tag=0. For another example, when the metric indicates the load level of the relevant peer node, if the load of the peer node (such as a source node, etc.) corresponding to the media content is normal, the metric identifier can be recorded as H-tag=1 and If the peer node is overloaded, record it as H-tag=0.

Further, after acquiring the metric identifier, the requesting node may further analyze the value of the metric identifier, so as to judge whether the media content is a popular content according to the value of the metric identifier, or judge the Whether the media content requires security monitoring, or whether the load of the relevant peer nodes is normal.

Further, the media content request may carry the address information of the requesting terminal, and the requesting node may also perform an analysis on the address information carried by the media content request according to the analysis result of the value of the metric identifier. Treat accordingly. For example, when the metric identifier indicates that the corresponding media content is a popular content, or that it requires security monitoring, or that its related peer node load is normal, the requesting node may further replace the requesting terminal address information with its local address information , so as to carry its local address information in the media content request and send it to the content source terminal or the peer node on the content source terminal side (hereinafter referred to as the source node), so that the content source terminal can use peer-to-peer The transmission mode of node relay is used for the transmission of media content. And when the metric identifier indicates that the corresponding media content is unpopular content, or that it does not require security monitoring, or that its related peer nodes are overloaded, the requesting node performs a check on the requesting terminal address information carried in the received media content request. Transparent transmission, so that the address information of the requesting terminal is sent to the content source terminal, so that the content source terminal can transmit media content in a direct transmission mode between the content source terminal and the requesting terminal.

Further, the requesting node may transfer the media content request including the metric identifier to the content source terminal through the source node, and use the metric identifier to notify the peer node on the content source terminal side that during the forwarding process Corresponding processing is performed on the address information carried in the media content request including the metric identifier, such as replacing or transparently transmitting the address information.

Further, there may be a certain correspondence between the metric identifier and the transmission mode of the media content. For example, if the metric identifier is H-tag=1, that is, the media content is a popular content, or it needs security monitoring, or the load of its related peer nodes is normal, then the requesting node can notify through the metric identifier The content source terminal adopts a peer-to-peer transmission mode; and if the metric is identified as H-tag=0, that is, the media content is unpopular content, or it does not require security monitoring, or its related peer node load If it is too heavy, the requesting node notifies the content source terminal to adopt the direct transmission mode between the content source terminal and the requesting terminal through the metric identifier.

Further, when the content source terminal adopts the transmission method of peer-to-peer node transfer, the requesting node can also transfer the media content from the content source terminal to the requesting terminal, and confirm whether there is Other user terminals request the same media content; if it exists, copy the media content, and transmit the copied content to the corresponding user terminal. Further, the requesting node can also copy and save the media content transferred through it in advance, and then confirm whether there are other user terminals requesting the same media content; if there is, the pre-saved media content is directly output to the corresponding user terminal .

For ease of understanding, the P2P network media transmission method provided by the embodiment of the present invention will be further described below with reference to the accompanying drawings, taking the situation that the metric identifier is used to indicate the popularity of media content as an example. Please refer to Fig. 2 and Fig. 3, wherein Fig. 2 is a signaling interaction diagram of a specific embodiment of the P2P network media transmission method of the present invention when the media content is popular content, and Fig. 3 is a P2P network media transmission method of the present invention A specific embodiment is a signaling interaction diagram when the media content is unpopular content. The specific implementation scheme of the P2P network media transmission method of the present invention mainly includes the following steps:

Step 201, the requesting terminal sends a media content request Setup_0 to the requesting node, wherein the media content request Setup_0 may carry the address information of the requesting terminal, such as its internal IP address or port used for media content transmission.

Step 202, the requesting node searches for the corresponding media content in the P2P network, and obtains a search response corresponding to the media content from the index node, and the search response may include a content source terminal and/or a corresponding source for providing the media content Node address information, etc.

Step 203, the requesting node obtains the metric identifier related to the media content from the metric information processing unit. Specifically, firstly, the requesting node sends a query request for inquiring about the metric information related to the media content to the metric information processing unit. The measurement information may be the popularity of the corresponding media content, the security authority, or the load level of the relevant peer nodes. This embodiment uses the popularity of the media content as an example. The metric information processing unit may be an entity unit for analyzing and processing the metric information, which may be configured as a functional module inside the requesting node, or as a set in the P2P network dedicated to media A peer node for information statistics, or a server independent of the peer node in the P2P network, etc.

Secondly, the metric information processing unit analyzes and processes the metric information (for example, the number of visits of media content) in response to the query request, and generates a metric identifier for identifying the metric information. An optional solution is as follows: when the access statistic of the media content exceeds a predetermined reference value, the metric information processing unit generates a metric identification H-tag=1; and when the access statistic of the media content When it is lower than or equal to the predetermined reference value, the metric information processing unit generates a metric flag H-tag=0. Further, the metric information processing unit sends the generated metric identifier to the requesting node.

Step 204, the requesting node parses the metric identifier to determine whether the media content is a popular content. Specifically, the requesting node may make a judgment according to the value of the metric identifier. For example, if the request node parses out that the value of the metric identifier H-tag is 1, it is determined that the corresponding media content is a popular content; and if the request node parses out that the value of the metric identifier H-tag is 0 , it is determined that the corresponding media content is unpopular content.

Further, when the metric identifier indicates that the media content is a popular content, the requesting node selects the transfer mode of the peer node, and updates the media content request to notify the content source terminal to adopt the transmission mode selected by it. mode (that is, through peer-to-peer node transfer) to carry out the transmission of media content; and when the metric identifier indicates that the media content is unpopular content, the requesting node chooses to use direct communication between users (such as the content source terminal and the requesting terminal) direct communication between users), and update the media content request to notify the content source terminal to use the transmission mode selected (that is, direct communication between users) to transmit the media content.

Specifically, referring to FIG. 2 , if the media content is popular content, ie H-tag=1, then execute steps 205A-208A.

Step 205A, the requesting node updates the metric identifier H-tag=1 in the media content request, and sends the updated media content request to the source node.

In an embodiment, the requesting node saves the metric identifier H-tag=1 locally on the one hand, and attaches the metric identifier H-tag=1 to the media content request Setup_0 on the other hand. Further, the requesting node also replaces the requesting terminal address information carried by the media content request Setup_0 with local address information (that is, the address information of the requesting node itself), thereby updating the media content request Setup_0 Request Setup_1A for the media content carrying the metric identifier and requesting node address information. Further, the requesting node transmits the media content request Setup_1A to the source node on behalf of the requesting terminal.

Step 206A, the source node further updates the received media content request, and sends the updated media content request to the content source terminal.

In one embodiment, after the source node receives the media content request Setup_1A from the requesting node, on the one hand, it knows that the corresponding media content is a popular content through the metric identification H-tag=1 carried by it, and The metric identifier H-tag=1 is stored locally. On the other hand, the source node also replaces the request node address information carried by the media content request Setup_1A with its own address information (ie source node address information), thereby further updating the media content request Setup_1A to carry the Media content request Setup_2A for the above-mentioned metric identifier and source node address information. In addition, the source node further transmits the media content request Setup_2A to the content source terminal on behalf of the request node.

It can be seen that, the requesting terminal, the requesting node and the source node respectively notify the requesting node, the source node and the content source terminal of their own address information through the corresponding media content requests Setup_0, Setup_1A and Setup_2A.

Step 207A, the content source terminal returns a request response to the requesting terminal. The content source terminal learns from the metric identifier H-tag=1 carried by the media content request Setup_2A that the requesting node chooses to use the transmission mode of relaying by peer nodes such as the source node and the requesting node, and further passes the source node The node and the requesting node return a request response to the requesting terminal. Specifically, the content source terminal first sends a request response Setup-ack_0 carrying content source address information to the source node, and the source node then replaces the content source address information carried in the request response Setup-ack_0 with own address information (that is, source node address information), and proxy the content source to send the request response Setup-ack_1A carrying the source node address information to the requesting node, and the requesting node then responds the request to Setup-ack_1A The source node address information carried is replaced with its own address information (that is, the request node address information), and the source node sends the request response Setup-ack_2A carrying the request node address information to the request terminal on behalf of the source node.

It can be seen that, through corresponding request responses to Setup-ack_0, Setup-ack_1A, and Setup-ack_2A, the content source terminal, source node, and request node transmit their own address information to the source node, request node, and request terminal respectively .

Further, after receiving the request response Setup-ack_2A, the requesting terminal may send a session establishment acknowledgment message Session-ok to the requesting node. The session establishment confirmation message Session-ok is further transmitted through the connection between the requesting node and the source node, and is received by the content source terminal. So far, a transit transmission channel is established between the content source terminal and the requesting terminal using the source node and the requesting node for transit.

Step 208A, the content source terminal transmits the corresponding media content to the requesting terminal. That is, the content source terminal transmits the media content by using the transit transmission channel. The media content sent by the content source terminal is transmitted to the requesting terminal after being relayed by the source node and the requesting node in sequence.

Further, during the process of transmitting the media content through the transit transmission channel, the source node and the requesting node may further confirm whether there is any other user terminal requesting the same media content. If the source node or the requesting node receives media content requests from other user terminals during this period, it will copy the media content transferred by it, and further transmit the copied content to the other users requesting the media content terminal.

Furthermore, the source node and the requesting node may also proactively pre-copy the media content during the transfer process of the media content, and pre-store the pre-copied content in their internal storage modules. When the source node or the requesting node finds that there are other user terminals requesting the same media content, it directly outputs the pre-stored copy content to the corresponding user terminal.

It can be seen that, when the metric identifier indicates that the corresponding media content is a popular content, the content source terminal transmits the media content in a transfer manner through a peer node. During the transmission process, when there are multiple user terminals requesting the same media content at the same time, the corresponding peer node can copy the transmission content transferred by it, and directly provide it to other user terminals requesting the same content. By using this flow duplication mode, the repeated traffic of the P2P network can be unblocked, the traffic of the P2P network can be effectively reduced, and the utilization efficiency of network resources can be improved.

On the other hand, please refer to FIG. 3 , if the media content is unpopular content, that is, H-tag=0, execute steps 205B-208B:

Step 205B, the requesting node updates the media content request by carrying the metric identifier H-tag=0 to the media content request, and sends the updated media content request to the source node.

In an embodiment, the requesting node saves the metric identifier H-tag=0 locally on the one hand, and attaches the metric identifier H-tag=0 to the media content request Setup_0 on the other hand. Different from step 205A, the requesting node does not replace the requesting terminal address information carried in the media content request Setup_0, but directly transparently transmits the address information. Thus, the requesting node updates the media content request Setup_0 to the media content request Setup_B carrying the metric identifier and requesting terminal address information. Further, the requesting node transmits the media content request Setup_B to the source node on behalf of the requesting terminal.

Step 206B, the source node sends the updated media content request to the content source terminal on behalf of the requesting node;

After the source node receives the media content request Setup_B from the requesting node, it learns that the corresponding media content is an unpopular content through the measurement identification H-tag=0 carried by it, and saves the measurement identification H-tag locally =0. Moreover, the source node directly transparently transmits the requesting terminal address information it carries, so that it further transmits the media content request Setup_B to the content source terminal.

Step 207B, the content source terminal returns a request response to the requesting terminal.

Specifically, the content source terminal learns from the metric identifier H-tag=0 carried in the media content request Setup_B that the requesting node selects the direct transmission mode between users. Further, the content source terminal sends a request response Setup-ack_B carrying content source address information to the requesting terminal through the source node and the requesting node. So far, the content source terminal and the requesting terminal have obtained the address information of the other party through the media content request Setup_B and the request response Setup-ack_B respectively,

Further, after receiving the request response Setup-ack_B, the requesting terminal sends a session establishment confirmation message Session-ok to the content source terminal through the connection transfer between the requesting node and the source node, so that the content source A direct transmission channel from the content source terminal to the requesting terminal is established between the terminal and the requesting terminal without transiting through peer nodes.

Step 208B, the content source terminal transmits the corresponding media content to the requesting terminal. Specifically, the content source directly performs a media content transmission session with the requesting terminal by using the direct transmission channel, that is, provides the media content to the requesting terminal.

It can be seen that when the metric identifier indicates that the corresponding media content is unpopular content, the content source terminal transmits the media content in a direct transmission manner between users. Through this transmission mode, the media content does not pass through peer-to-peer nodes, so it will not occupy P2P network resources, and the transmission efficiency can be effectively improved.

To sum up, the P2P network media transmission method provided by the embodiment of the present invention selects a corresponding transmission mode according to the popularity of the media content to transmit the media content. When the media content is popular, the transmission method of peer-to-peer node transfer and stream replication is adopted as needed, so that the duplicate traffic that may exist in the network can be effectively channeled; when the media content is unpopular content, the direct transmission method between users is adopted , improve transmission efficiency. Therefore, the P2P network media transmission method provided by the embodiment of the present invention realizes the complementary advantages of the two media content transmission modes of peer-to-peer node transfer and direct connection between users.

In addition, in the P2P network transmission method provided by the embodiment of the present invention, the metric information corresponding to the metric identifier may also be the security authority of the media content or the load level of the peer node corresponding to the media content. In these two cases, the transmission of the media content can be performed with reference to the specific implementation solutions of the above-mentioned P2P network transmission method, which will be briefly described below.

For example, taking the metric identifier representing the security authority of the media content as an example, when the security authority of the media content is high, the metric identifier provided by the metric information processing unit is H-tag=1. In this case, after parsing the metric identifier, the requesting node learns that the media content needs to be monitored safely, and then chooses to adopt the transmission mode of relaying through peer nodes. During the transmission of the media content, the P2P network can conduct security monitoring through peer nodes (such as source nodes and request nodes) that transfer the media content. On the contrary, when the security authority of the media content is low, the metric identifier provided by the metric information processing unit is H-tag=0. In this case, the requesting node learns that the media content does not need to be monitored by security through analyzing the metric identifier, and then chooses to adopt the direct transmission mode between users.

As another example, taking the load degree of the corresponding peer node indicated by the metric identifier as an example, when the load of the peer node corresponding to the media content is normal, the metric identifier provided by the metric information processing unit is H-tag=1 . In this case, the requesting node learns that the load of the relevant peer node (such as the source node) is normal and can transfer the media content through the analysis of the metric identifier, and then chooses to use the transmission mode of transferring through the peer node. And when the peer node corresponding to the media content is overloaded, the metric identifier provided by the metric information processing unit is H-tag=0. In this case, the requesting node learns that the load of the relevant peer node is too heavy and may not be able to transfer the media content temporarily through analyzing the metric identifier, so it chooses to use the direct transmission mode between users.

Further, the metric identifier may also represent a combination of the popularity of the media content, the security authority or the load level of its related peer nodes, and the specific combination may be determined according to actual needs. In this case, the transmission of the media content may also be performed with reference to the specific implementation solution of the above-mentioned P2P network transmission method.

Based on the P2P network media transmission method, the embodiment of the present invention further provides a P2P network media transmission system. Please refer to FIG. 4, which is a schematic structural diagram of Embodiment 1 of the P2P network media transmission system of the present invention. The P2P network media transmission system 500 provided in Embodiment 1 includes:

Content source terminal 502, which is used to provide media content;

A requesting terminal 501, configured to request corresponding media content from the content source 502 by sending a media content request, wherein the media content request may carry address information of the requesting terminal 501;

A requesting node 510, configured to receive a media content request from the requesting terminal 501, obtain a metric identifier related to the media content requested by the requesting terminal and carry it to the received media content request, wherein the metric identifier It is used to represent one or more combinations of the popularity degree of the media content requested by the requesting terminal, the security authority, or the load degree of the relevant peer nodes;

a source node 520, configured to forward the media content request provided by the request node 510 and carrying the metric identifier to the content source 502;

Wherein, the content source terminal 502 can also be further configured to receive the media content request containing the metric identifier, and adopt a peer-to-peer transfer transmission mode or a direct connection between the content source terminal and the requesting terminal according to the metric identifier. The transmission mode sends the media content requested by the requesting node to the requesting terminal 501 .

Further, the P2P network media transmission system 500 may also include:

A metric information processing unit 540, which may be a functional entity independent of the requesting node 510 and the source node 520, and which may be used to analyze the popularity of the media content, the security authority, or the load level of the relevant peer nodes, And provide the corresponding metric identifier to the requesting node 510 according to the analysis result.

Further, the P2P network media transmission system 500 may also include:

The index node 530 is configured to save the content index of the media content, and provide the information of the content index to the request node 510 in response to the query of the request node 510 . Wherein, the information of the content index may include address information of the content source terminal 502 providing the media content and/or address information of the corresponding source node 520 .

Further, the requesting node 510 can further be used to analyze the metric identification, so as to judge whether the corresponding media content is a popular content according to the analysis result, or whether it needs security monitoring, or its related peer node load Is it normal.

Further, the requesting node 510 may also perform corresponding processing on the address information carried in the media content request from the requesting terminal 501 according to the analysis result of the metric identifier, for example, when the metric identifier indicates that the corresponding media content When it is popular content, or requires security monitoring, or its related peer node load is normal, replace the address information carried by the media content request with the address information of the requesting node 510 itself; otherwise, transparently transmit the media content The address information carried in the request.

Further, when the metric identifier indicates that the media content is a popular content, the source node 520 and the request node 510 may also transfer the media content from the content source terminal 502 to the request terminal 501, and during the transfer process Confirm whether there are other user terminals requesting the same media content; if so, copy the media content, and transmit the copied content to the corresponding user terminal.

In addition, as the three logical roles in the P2P network media transmission system, any node among the request node 510, the index node 530 and the source node 520 can assume any one or two of the three logical roles, Or be three logical roles at the same time.

Please refer to FIG. 5 , which is a schematic structural diagram of Embodiment 2 of the P2P network media transmission system of the present invention. The P2P network media transmission system 600 provided in Embodiment 2 is similar to the P2P network media transmission system 500 provided in Embodiment 1, and the main The difference is that the metric information processing unit 640 of the P2P network media transmission system 600 is a functional module of the requesting node 610 and is set inside the requesting node 610 . After the requesting node 610 receives the media content request from the requesting terminal 601 , it does not need to receive the metric identifier from the outside, but directly obtains the corresponding metric identifier from the internal information analysis unit 640 .

Further, the metric information processing unit 640 may also be set as an internal functional module of other peer nodes such as the index node 630 or the source node 620 .

Based on the above P2P network media transmission systems 500 and 600, the embodiment of the present invention further provides a peer node for the P2P network media transmission system. Please refer to FIG. 6, the peer node 700 provided by the embodiment of the present invention can be used as a request node of a P2P network, which includes:

A media request receiving module 710, configured to receive a media content request from a requesting terminal, wherein the media content request may carry address information of the requesting terminal;

A metric identifier acquisition module 720, configured to acquire a metric identifier related to the media content requested by the requesting terminal, where the metric identifier is used to represent the popularity, security authority, or related peer nodes of the media content requested by the requesting terminal One or more combinations of load levels;

A media request update module 730, configured to carry the metric identifier to the media content request received by the media request receiving module to generate a media content request including the metric identifier;

A media request sending module 740, configured to send the metric identifier and the media content request to the content source terminal, so as to request the content source terminal to adopt a peer-to-peer transmission mode or the content source terminal and the request according to the metric identifier The media content corresponding to the media content request is sent in a direct transmission mode between terminals.

Further, the peer node 700 may also include:

The address information storage module 750 is configured to store the address information of the peer node, and provide the address information of the peer node to the media request update module 730 .

Further, when the metric identifier indicates that the media content is a popular content, or requires security monitoring, or the load of the relevant peer node is normal, the media request update module 730 is also used to update the media content from the requesting terminal The address information of the requesting terminal carried in the request is replaced with the address information of the requesting node itself; and when the metric identifier indicates that the media content is unpopular, or does not require security monitoring, or the load of the relevant peer node is too heavy, The media request update module 730 is further configured to transparently transmit the requesting terminal address information carried in the media content request from the requesting terminal.

Further, the peer node 700 may also include:

A media content receiving module 760, which is used to receive the media content provided by the content source terminal, wherein the media content can be transferred to the media content receiving module 760 through other peer-to-peer nodes;

A media content forwarding module 770, which is used to forward the media content received by the media content receiving module 760 to the corresponding requesting terminal;

The media content storage module 780 is used for storing the media content transferred by the media content transfer module 770 .

In the process of media content transfer, the media content transfer module 770 can also request the media request receiving module 710 whether there are other user terminals requesting the same media content; if there is, the media content transferred by it is copied and stored in the media content storage module 780, and further provide the copied content stored in the media content storage module 780 to the other user terminals.

Further, the peer node 700 may also include:

A request response forwarding module 790, configured to forward the request response returned by the content source terminal to the requesting terminal, and determine whether to include the address carried in the request response according to the metric identifier obtained by the metric identifier acquisition module 720 The information is replaced with the address information of the peer node 700 itself provided by the address information storage module 750 .

Wherein, when the metric identifier indicates that the corresponding media content is a popular content, or requires security monitoring, or the load of the relevant peer node is normal, the request response forwarding module 790 replaces the address information carried in the request response with the address information storage Module 750 provides address information to establish a transit transmission channel. When the metric identifier indicates that the corresponding media content is unpopular, or does not require security monitoring, or the load of the relevant peer node is too heavy, the request response forwarding module 790 directly transparently transmits the address information carried in the request response to the request terminal to establish a through transmission channel.

Through the above description of the implementation manners, those skilled in the art can clearly understand that the present invention can be implemented by means of software plus a necessary hardware platform, and of course can also be implemented entirely by hardware. Based on this understanding, all or part of the contribution made by the technical solution of the present invention to the background technology can be embodied in the form of software products, and the computer software products can be stored in storage media, such as ROM/RAM, magnetic disks, optical disks, etc. , including several instructions to make a computer device (which may be a personal computer, a server, or a network device, etc.) execute the methods described in various embodiments or some parts of the embodiments of the present invention.

The above is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed in the present invention can easily think of changes or Replacement should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention should be determined by the protection scope of the claims.

Claims (14)

1. A peer-to-peer network media transmission method, characterized in that, comprising: receiving a media content request from a requesting terminal; Acquire, according to the media content request, a metric identifier related to the media content requested by the requesting terminal, wherein the metric identifier is used to represent the popularity, security authority, or relevant peer node of the media content requested by the requesting terminal One or more combinations of loading levels; Carrying the metric identifier to the received media content request, and sending the media content request containing the metric identifier to the content source terminal, so as to request the content source terminal to use peer-to-peer relay transmission according to the metric identifier The media content requested by the requesting terminal is sent in a direct transmission mode between the content source terminal and the requesting terminal. 2. the peer-to-peer network media transmission method as claimed in claim 1, is characterized in that, also comprises: after obtaining described metric identification, judges according to described metric identification whether the media content that described requesting terminal requests is popular content, Or determine whether the media content needs security monitoring, or determine whether the load of its related peer nodes is normal. 3. The peer-to-peer network media transmission method according to claim 1 or 2, wherein the media content request from the requesting terminal carries the address information of the requesting terminal, and the method further comprises: using a local The address information replaces the address information of the requesting terminal, so that the media content request sent to the content source terminal includes the local address information. 4. The peer-to-peer network media transmission method according to claim 1 or 2, wherein the media content request carries the address information of the requesting terminal, and the method further comprises, receiving the media content The requesting terminal address information carried in the request is transparently transmitted, so as to send the requesting terminal address information to the content source terminal. 5. The peer-to-peer network media transmission method according to claim 2, wherein when the media content is a popular content, the content source terminal is notified to use the peer-to-peer node by using the metric identifier carried in the media content request Transit transmission mode, and when the media content is unpopular content, use the metric identifier carried in the media content request to notify the content source terminal to adopt a direct transmission mode between the content source terminal and the requesting terminal; Alternatively, when the media content requires security monitoring, the metric identifier carried in the media content request is used to notify the content source terminal to adopt a peer-to-peer transfer transmission mode, and when the media content does not need security monitoring Using the metric identifier carried in the media content request to notify the content source terminal to adopt a direct transmission mode between the content source terminal and the requesting terminal; Or, when the load of the relevant peer node of the media content is normal, the metric identifier carried in the media content request is used to notify the content source terminal to adopt the transfer mode of the peer node, and when the load of the relevant peer node is heavy Using the metric identifier carried in the media content request to notify the content source terminal to adopt a direct transmission mode between the content source terminal and the requesting terminal. 6. The peer-to-peer network media transmission method according to claim 1, wherein the step of sending the media content request comprising the metric identifier to the content source terminal comprises: sending the content source terminal side peer node containing Transfer the media content request with the metric identifier to the content source terminal, and use the metric identifier to notify the peer node on the content source terminal side of the The address information is processed accordingly. 7. The peer-to-peer network media transmission method according to claim 1, wherein, when the content source terminal adopts a peer-to-peer node transfer transmission method, it also includes: forwarding the media content from the content source terminal to the The above requesting terminal, and confirm whether there are other user terminals requesting the same media content during the transfer process; if so, copy the media content, and transmit the copied content to the corresponding user terminal. 8. A peer-to-peer network media transmission system, characterized in that, comprising: A peer node, which is configured to receive a media content request from a requesting terminal, obtain a metric identifier related to the media content requested by the requesting terminal and carry it to the received media content request, wherein the metric identifier is used to represent One or more combinations of the popularity degree of the media content requested by the requesting terminal, the security authority or the load degree of the relevant peer nodes; A content source terminal, which is used to receive the media content request provided by the peer node that includes the metric identifier, and adopt a peer-to-peer transfer transmission mode or a direct connection between the content source terminal and the requesting terminal according to the metric identifier The transmission mode sends the media content requested by the requesting terminal to the requesting terminal. 9. The peer-to-peer network media transmission system as claimed in claim 8, further comprising: a measurement information processing unit, which is used for the degree of popularity of the media content, the security authority or the load degree of the relevant peer nodes Perform analysis, and provide corresponding metric identifiers to the peer nodes according to the analysis results. 10. peer-to-peer network media transmission system as claimed in claim 9, is characterized in that, when described metric mark represents that described media content is popular content, or it needs security monitoring, or when its relevant peer node load is normal, The content source terminal uses peer-to-peer transfer mode for media content transmission; and when the metric indicator indicates that the media content is unpopular content, or it does not require security monitoring, or its related peer nodes are overloaded , the content source terminal transmits the media content in a direct transmission mode between the content source terminal and the requesting terminal. 11. The peer-to-peer network media transmission system according to claim 10, wherein, when the content source terminal adopts a peer-to-peer node transfer transmission mode, the peer-to-peer node is also used to The media content of the terminal is transferred to the requesting terminal, and during the transfer process, it is confirmed whether there are other user terminals requesting the same media content; if there is, the media content is copied, and the copied content is sent to the corresponding user terminal. 12. A peer-to-peer node for a peer-to-peer network, comprising: A media request receiving module, which is used to receive a media content request from a requesting terminal; A metric identification acquisition module, configured to acquire a metric identification related to the media content requested by the requesting terminal, where the metric identification is used to represent the popularity, security authority, or relevant peer nodes of the media content requested by the requesting terminal One or more combinations of loading levels; A media request sending module, configured to send the metric identifier and the media content request to the content source terminal, so as to request the content source terminal to adopt a peer-to-peer transfer mode or the content source terminal and the requesting terminal according to the metric identifier Send the media content corresponding to the media content request in a direct transmission manner. 13. The peer node of claim 12, further comprising: A media request update module, configured to carry the metric identifier to the media content request received by the media request receiving module to generate a media content request including the metric identifier; and represent the media content in the metric identifier When it is popular content, or security monitoring is required, or the load of relevant peer nodes is normal, the media request update module is also used to replace the request terminal address information carried by the media content request received by the media request receiving module with the local Address information, and when the metric identifier indicates that the media content is unpopular, or does not require security monitoring, or the load of the relevant peer node is too heavy, the media request update module is also used to transparently transmit the media Request terminal address information carried in the media content request received by the request receiving module. 14. The peer node of claim 12, further comprising: a media content receiving module, configured to receive media content provided by the content source terminal; A media content transfer module, configured to transfer the media content received by the media content receiving module to the requesting terminal, and also confirm to the media request receiving module whether there are other users during the media content transfer process The terminal requests the same media content; if it exists, it copies the media content forwarded by it, and provides the copied content to said corresponding user terminal.

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