WO2007140721A1

WO2007140721A1 - A method and system for data transmission based on peer to peer

Info

Publication number: WO2007140721A1
Application number: PCT/CN2007/070045
Authority: WO
Inventors: Yi Gong; Ye Zhu; Bo Wu; Jiancheng Li; Baohe Zhang
Original assignee: Tencent Technology (Shenzhen) Company Limited
Priority date: 2006-05-29
Filing date: 2007-05-22
Publication date: 2007-12-13
Also published as: RU2008150399A; CN101083576A; CN100518114C; BRPI0712694B1; RU2399160C1; BRPI0712694A2; MY169684A

Abstract

A method for data transmission based on peer to peer (P2P), creates a P2P link in advance between the transmitter and receiver, and the method also includes: A. the transmitter identifies the said transmitting data based on the type of transmitting data, and sends the identified transmitting data to the receiver based on the said P2P link, thereinto the types of transmitting data being at least one (101); B. the receiver analyses the transmitting data to gain the identification of the transmitting data, and processes the transmitting data basing on the type corresponding to the identification (102). The embodiment of the present invention also discloses a system for data transmission based on P2P.

Description

Point-to-point data transmission method and system

The present invention relates to the field of point-to-point (P2P) technology, and more particularly to a P2P-based data transmission method and system. Background of the invention

P2P originated from the original networked communication method, such as connecting personal computers (PCs) in a building through a local area network, and dialing interconnections between different buildings via modems (Modem). The communication mode built on the Transmission Control Protocol (TCP) / Internet Protocol (IP) constitutes the foundation of today's Internet, so from a technical point of view, P2P is not a new technology, but a new application technology model. Although the research on P2P has never stopped, today P2P is once again concerned mainly because of the emergence of shared software such as Napster and instant messaging software.

Now the Internet is mainly based on the server (Browser) or Server (Server) / Client (Client) structure application mode. Such an application must set at least one server in the network, and the information can be transmitted through the server. . In this mode, the information is either first uploaded to the server for storage, then downloaded separately (such as a website), or the information is processed according to the proprietary rules on the server before the flow (such as mail) can be transmitted over the network.

At present, there are many applications based on P2P technology, and instant communication technology is one of the typical representative technologies. In instant messaging applications, two or more users communicate with each other using text, voice or files. This communication is fast and straightforward, and it is easy to communicate with non-PC network devices (such as PDAs, mobile phones, etc.), and it does not depend on The device can identify the user. Since P2P technology can be used to weaken or even get rid of the dependence on the central server, such communication is closer to the non-internet communication mode. In the current instant messaging applications, video communication is a very wide range of applications. With the popularity of video communication, users are increasingly demanding video communication. many. Among them, multiplayer video is a very urgent need. However, people are not satisfied with the simple multiplayer video. People want to add more elements to the video, such as text chat to assist video chat, chat to send custom images, and file sharing.

In instant messaging applications, the implementation of multi-person data sharing can be interpreted as an additional data transfer function such as multi-person text chat and multi-person file sharing. Existing multiplayer text chats and multiplayer file sharing are based on the server/client model, where the sender's text message or file is first transmitted to the server, which then distributes the text message or file to others. In this technology, an additional server is needed to forward the corresponding data, which not only increases the cost investment, but also destroys the original P2P audio and video system structure.

In other P2P-based applications, different types of data transmission problems are usually involved. If an additional server is used to forward the corresponding data, it will obviously increase the cost. How to save costs is any kind of P2P transmission method. Focused on. Summary of the invention

In view of this, the main purpose of embodiments of the present invention is to propose a P2P-based data transmission method to reduce costs.

Another object of embodiments of the present invention is to propose a P2P-based data transmission system to reduce costs.

To achieve the above objective, the technical solution of the embodiment of the present invention is implemented as follows: A P2P-based data transmission method, which is established in advance between a sender and a receiver.

P2P connection, the method further includes:

A. The sender identifies the transmission data according to the type of the transmission data, and sends the identified transmission data to the receiver based on the P2P connection, where the type of the transmission data is at least one type; B. The receiver parses the transmission data to obtain an identifier of the transmission data, and processes the transmission data according to the type corresponding to the identifier.

A P2P-based data transmission system, the system comprising:

a sender, configured to identify the transmission data according to a type of the transmitted data, and send the identified transmission data to the receiver according to the P2P connection, where the type of the transmitted data is at least one type;

a receiving end, configured to parse the transmitted data to obtain an identifier of the transmitted data, and process the transmitted data according to the type corresponding to the identifier;

The connection between the sender and the receiver is a P2P connection.

As can be seen from the foregoing technical solutions, in the P2P-based data transmission method of the embodiment of the present invention, the sender identifies the transmission data according to the type of the transmission data, and sends the identified transmission data to the receiver based on the P2P connection. The receiver parses the transmission data to obtain an identifier of the transmission data, and processes the transmission data according to the type corresponding to the identifier. Therefore, after applying the technical solution of the embodiment of the present invention, in the P2P communication mode, the sender identifies different types of data, and the receiver performs corresponding processing on different data according to the identifier to implement the same data channel. To transmit different kinds of data, there is no need to use an additional server to forward data, so it is possible to transmit different types of transmission data at a cost-effective manner. BRIEF DESCRIPTION OF THE DRAWINGS

1 is a flow chart of an exemplary method for transmitting data based on P2P according to an embodiment of the present invention. 2 is a schematic flow chart of a sender transmitting data according to an embodiment of the present invention. 3 is a schematic flow chart of receiving data by a receiver according to an embodiment of the present invention. 4 is a schematic diagram of multi-person audio and video and text chat, in accordance with an exemplary embodiment of the present invention. FIG. 5 is a schematic diagram of a transmission queue according to an embodiment of the invention.

Figure 6 is a schematic diagram showing an exemplary structure of a system for transmitting data based on P2P according to an embodiment of the present invention. Mode for carrying out the invention

The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

In the embodiment of the present invention, in the P2P communication mode, different types of data are identified by the sender, and the receiver performs corresponding processing on different data according to the identifier, so as to realize different types of data by using the same data channel. Significant cost savings without the need to use additional servers.

1 is a flow chart of an exemplary method for transmitting data based on P2P according to an embodiment of the present invention. The method pre-establishes a P2P connection between the sender and the receiver. As shown in FIG. 1, the method further includes:

Step 101: The sender identifies the transmission data according to the type of the transmission data, and sends the identified transmission data to the receiver based on the P2P connection, where the type of the transmission data is at least one.

For a data channel that is only used to transfer data, it does not care what is being transferred. Therefore, different types of data can be separately identified, and then the identified data is uniformly transmitted through the P2P connected data channel.

Step 102: The receiver parses the transmission data to obtain an identifier of the transmission data, and processes the transmission data according to the type corresponding to the identifier.

After receiving the transmission data, the receiver first parses the transmission data to obtain an identifier, and then processes the transmission data according to the type corresponding to the identifier.

Here, since the receiver receives a variety of transmission data, it needs to be distinguished. Reason. The transmission data may be parsed first to obtain an identifier, and then the transmission data is processed according to the type corresponding to the identifier.

For example, the following describes an embodiment of the present invention by taking audio and video chat in an instant messaging application as an example.

First, when multiple people are communicating in P2P, a data channel will be established between each two people for transmission of data. For example, when N people make multi-person videos, then everyone will establish a data channel with other N-1 people, and then transfer their audio and video data to other N-1 individuals through these channels, while receiving other N- 1 person's audio and video data for audio and video communication.

However, for audio and video data channels, although it is specifically used to transmit audio and video data, in fact, audio and video data channels do not care what data is transmitted. With this, you can make full use of these audio and video channels. It transmits some additional data to enable additional communication functions. According to an embodiment of the present invention, data can be identified to facilitate parsing and processing different types of data. Since the underlying channel is the same for any data transmission, the data needs to be identified before transmission, and then the receiver parses out different data according to the unified identification data, thereby performing different processing. At the same time, since the audio and video channels are utilized, it is necessary to consider the influence on audio and video communication, and it is not suitable for directly transmitting and receiving data like a normal channel. In order to ensure the smooth communication of audio and video, a continuous stream of data is required to be transmitted on the audio and video channels. Therefore, when using this channel to transmit additional data, the impact on audio and video data transmission should be minimized so that it does not have an excessive impact on the smoothness of audio and video communication.

The transmission modes of the sender and the receiver to which the embodiment of the present invention is applied will be described below.

2 is a schematic flow chart of a sender transmitting data according to an embodiment of the present invention. As shown in Figure 2, the method includes: Step 201: Add corresponding identifiers to different types of data, and then uniformly add data to the data sending queue.

The sender needs to identify the data before transmission, so that the receiver can parse different data according to the unified identification data for different processing. Here, the sender's identification of the data is related to the functional requirements, because the receiver will handle different functional data differently. For example, the video data needs to be decoded and displayed, the text chat data needs to be displayed in the chat box, the picture data needs to be parsed and displayed in the corresponding picture format, and the like. Therefore, the sender adds the data corresponding to the first function to the first function data identifier, adds the data corresponding to the second function to the second function data identifier, and adds the data corresponding to the third function to the third function data identifier. . After the sender adds different identifiers to the data of different functions (that is, different types), the data is uniformly added to the data sending queue. Here, the transmission data may be any one of audio data, video data, electronic files, instant messaging information, or any combination of more than one of them.

Step 201: Obtain data from the sending queue and send it to different users.

Since the transmission mode of the P2P preferably corresponds to a plurality of users, that is to say preferably corresponding to a plurality of senders and receivers, it is preferred here to transmit data to different recipients. Similarly, other senders have the same or similar transmission process.

When the number of senders is at least two, each sender separately identifies the transmission data transmitted according to the type of the transmission data, wherein each sender uses the same identifier for the same type of transmission data, and each The sender transmits the identified transmission data to the recipient based on the P2P connection.

This enables a multi-functional data distribution to multiple users. For the receiver, it is also necessary to establish a mechanism for receiving multiple data and analyzing and processing multiple functional data.

Corresponding to the flow shown in FIG. 1, FIG. 3 is a receiver receiving data according to an embodiment of the present invention. Schematic diagram of an exemplary process. As shown in Figure 3, it includes:

Step 301: Receive data from different users, and add all data to the data processing queue;

Since the P2P transmission mode preferably corresponds to a plurality of users, that is to say preferably corresponding to a plurality of senders and receivers, it is preferred here to receive data from different recipients and to add all data to the data processing queue.

Step 302: Acquire and parse the data from the data processing queue, and perform corresponding processing corresponding to the data of different identifiers.

Here, data is first obtained from the data processing queue, and then the data is parsed to obtain a corresponding identifier, and the data corresponding to the identifier is separately processed. For example, the video data is decoded and displayed, the text chat data needs to be displayed in the chat box, the picture data is parsed and displayed in the corresponding picture format, and the like. In other words, different data is processed differently.

Wherein, when the number of the receivers is at least two, each receiver parses the received transmission data to obtain the identifier of the transmission data, and uniformly processes the transmission data with the same identifier according to the type corresponding to the identifier.

Obviously, according to the above method, by reusing the P2P multi-person audio and video channel, a multi-user multi-function system can be completed, such as multi-person text chat while multi-person audio and video chat.

4 is a schematic diagram of multi-person audio and video and text chat according to an embodiment of the present invention. As can be seen from FIG. 4, a plurality of users can perform text chat while performing multi-person audio and video chat, thereby greatly promoting the intimate feeling of the chat, and does not need to improve the existing server architecture, and also greatly saves The cost.

In addition, when applying the present invention to multi-person chat in an instant messaging application, since the audio and video channels are utilized to transmit additional data, it is necessary to consider additional data for audio and video communication. It is preferable that the transmission and reception of data are not directly performed. In order to ensure the smooth flow of audio and video communication, an active and continuous data stream is required to be transmitted on the audio and video channels. Therefore, when using this channel to transmit additional data, the impact on the transmission of audio and video data should be minimized, so that it will not be It has any bad influence on the smoothness of audio and video communication. The present invention preferably controls the transmission frequency of the additional data to avoid affecting the audio and video fluency.

When the additional transmission data is too large, not only the data transmission is performed by adding the identifier, but also the frequency of the transmission is controlled. Otherwise, the audio and video data may be blocked due to the large amount of additional data transmission, thereby affecting the sound. The fluency of video communication.

Therefore, the present invention preferably preliminarily mixes various types of transmission data at intervals before transmitting transmission data. Due to the existence of the data transmission queue, as long as the interval of adding data to the data transmission queue is constant, the interval for sending data in the order of the queue is also fixed when transmitting, so that the network transmission fluctuation caused by the network may be ignored. Therefore, for audio and video data, when the data transmission queue is added, it is continuously added, and the additional data is inserted at equal intervals when it is added to the data transmission queue, so that the transmission data is mixed at equal intervals. Therefore, as long as the data is sequentially sent from the sending queue for transmission, the time interval for data transmission is guaranteed to be constant.

Here, in the equally spaced mixed transmission data, M additional data may be spaced every N audio/video data, where N is a positive integer greater than or equal to 1, and M is also a positive integer greater than or equal to 1. . The present invention has no limitation on the values of N and M. The value of N can be greater than M, less than M, and equal to M. For example, when N is equal to 3, there may be 1 additional data for every 3 audio/video data intervals, or 2 additional data for every 3 audio/video data intervals, or 3 intervals for every 3 audio/video data. Additional data, generally choose to insert an additional data for every three audio and video data.

Obviously, although the above description is made by taking N equal to 3 as an example, the present invention does not limit the value of N. FIG. 5 is a schematic diagram of a transmission queue according to an embodiment of the invention. In Fig. 5, the circular data is audio and video data, and the block data is additional data. As can be seen from Fig. 5, one additional data is inserted at intervals of every three audio and video data, wherein the additional data can be electronic files, instant messaging information ( Text chat information) and so on.

FIG. 6 is a schematic diagram showing an exemplary structure of a P2P transmission data system according to an embodiment of the present invention. As shown in FIG. 6, the system includes a plurality of terminals, wherein each terminal can be either a sender or a receiver. The system includes:

The connection between the sender and the receiver is a P2P connection.

Preferably, the number of the senders is at least two, and the number of the receivers is at least two.

Each sender is configured to separately identify the transmission data sent by the sender according to the type of the transmission data, where each sender uses the same identifier for the same type of transmission data, and each sender is further used to connect based on the P2P Transmitting the identified transmission data to a receiver;

Each receiver is configured to parse the transmission data it receives to obtain the identification of the transmission data, and uniformly process the transmission data with the same identification according to the type corresponding to the identification.

More preferably, the type of transmission data is at least two, and the sender is further configured to mix the various types of transmission data equally at intervals before transmitting the transmission data. The transmission data that is mixed at equal intervals includes audio/video data and additional data, and an additional data is interposed every three audio/video data. It can be seen that after applying the embodiment of the present invention, the existing audio and video channels can be reused on the basis of P2P multi-person audio and video communication, thereby realizing multi-person text chat and multi-person file sharing without server distribution. Wait for multi-person data sharing, and also ensure the smoothness of audio and video communication.

The above is only the preferred embodiment of the present invention and is not intended to limit the scope of the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and scope of the present invention are intended to be included within the scope of the present invention.

Claims

Claim

A peer-to-peer P2P-based data transmission method, in which a P2P connection is established between a sender and a receiver, and the method further includes:

A. The sender identifies the transmission data according to the type of the transmission data, and sends the identified transmission data to the receiver according to the P2P connection, where the type of the transmission data is at least one type;

B. The receiver parses the transmission data to obtain the identifier of the transmission data, and processes the transmission data according to the type corresponding to the identifier.

The data transmission method according to claim 1, wherein the number of the senders is at least two, and the number of the receivers is at least two.

The step A includes: each sender separately identifies the transmission data sent by the sender according to the type of the transmission data, wherein each sender uses the same identifier for the same type of transmission data, and each sender is based on the P2P connection. Receiving, by the receiver, the identified transmission data;

The step B is: each receiver parses the received transmission data to obtain an identifier of the transmission data, and uniformly processes the transmission data with the same identifier according to the type corresponding to the identifier.

The data transmission method according to claim 1 or 2, wherein the transmission data is any one of audio data, video data, electronic file, instant messaging information, or any combination of more than one of .

The data transmission method according to claim 1 or 2, wherein the type of the transmission data is at least two, the method further comprising: transmitting, by the sender, various types of transmissions before transmitting the transmission data. Data is mixed at equal intervals;

Step A, according to the P2P connection, sending the identified transmission data to the receiver as: The equally spaced mixed transmission data is transmitted to the receiver at the P2P connection.

The data transmission method according to claim 4, wherein the equally spaced mixed transmission data includes audio/video data and additional data.

The data transmission method according to claim 5, wherein in the equally spaced mixed transmission data, M additional data is spaced every N audio/video data, wherein N is greater than or equal to 1. A positive integer, M is a positive integer greater than or equal to 1.

The data transmission method according to claim 5 or 6, wherein the additional data is an electronic file or instant messaging information.

A P2P-based data transmission system, the system comprising: a sender, configured to identify the transmission data according to a type of transmission data, and send the identifier to the receiver based on the P2P connection Transmitting data, wherein the type of data transmitted is at least one;

The connection between the sender and the receiver is a P2P connection.

The P2P-based data transmission system according to claim 8, wherein the number of the senders is at least two, and the number of the receivers is at least two.

The P2P-based data transmission system according to claim 8, wherein the type of the transmission data is at least two types. The sender is further configured to mix the various types of transmission data equally at intervals before transmitting the transmission data.