WO2014048310A1

WO2014048310A1 - Method, device and system for data interaction

Info

Publication number: WO2014048310A1
Application number: PCT/CN2013/084133
Authority: WO
Inventors: 杨佩林
Original assignee: 华为技术有限公司
Priority date: 2012-09-28
Filing date: 2013-09-24
Publication date: 2014-04-03
Also published as: CN103716659A

Abstract

A method, device and system for data interaction are disclosed in the embodiments of the invention. The invention relates to the technical field of communication and is configured to solve the problem in the prior art that when the Network Address Translation (NAT) occurs in the network between the Fast Channel Change (FCC) server and the Set Top Box (STB), the FCC server is unable to send media stream to STB. The method comprises the following steps: the FCC server receives an FCC request message; the FCC server confirms whether the NAT has occurred in the network between the FCC server and the STB sending the FCC request message; the FCC server forms corresponding transmission strategy according to the confirmed result whether the NAT has occurred in the network between the FCC server and the STB; and the FCC server sends the FCC request response and media stream according to the transmission strategy. The invention is applicable to mass deployment of IPTV service.

Description

Data interaction method, device and system

The present invention relates to the field of communications technologies, and in particular, to a data interaction method, apparatus, and system. Background technique

Currently, the Fast Channel Switching (FCC) method is gradually deployed in an interactive network television (for example, Internet Protocol Telephony, IPTV, Over The Top TV, OTT TV for short). The devices in the interactive network television service based on the fast channel switching method generally include a Set Top Box (STB) and a fast channel switching server. The fast channel switching server generally adopts the public network address of IPv4. When the STB also adopts the IPv4 public network address, the STB and the fast channel switching server can easily perform data interaction, for example, the STB sends a data request to the fast channel switching server, and the fast channel switching is performed. The server can return a response message to the STB relative to the data request and send the media stream to the STB. However, with the large number of IPv4 public network addresses, the IPv4 public network address has gradually dried up. Therefore, when the interactive network TV service is deployed on a large scale, the general fast channel switching server adopts the IPv4 public network address, and the STB generally uses the IPv4 private network address or the IPv6 address, and the STB needs to access the fast channel switching server. A network address translation (NAT) or a carrier-grade NAT (CGN) device is established between the STB and the fast channel switching server to enable the IPv4 private network address or I Pv of the STB. The address of 6 is pretending to be an IPv4 public network address when transmitting the data packet to perform data interaction with the fast channel switching server.

In the process of implementing the embodiments of the present invention, the inventor finds that at least the following problems exist in the prior art: When the fast channel switching server receives the data packet sent by the STB, it cannot determine the relationship between the STB and the fast channel switching server. Whether the network has performed network address translation, resulting in STB The network address translation is performed with the network between the fast channel switching server, and the fast channel switching server cannot send the media stream to the STB. Summary of the invention

The embodiment of the present invention provides a data interaction method, device, and system, which can solve the problem in the prior art that the fast channel switching server cannot determine whether the network between the STB and the fast channel switching server performs network address translation. If the network between the STB and the fast channel switching server performs network address translation, the fast channel switching server cannot issue a media stream to the STB.

In order to achieve the above object, the present invention adopts the following technical solutions:

The first aspect, the data interaction method provided by the embodiment of the present invention includes:

The fast channel switching server receives the fast channel switching request message, where the fast channel switching request message is used to request the fast channel switching service from the fast channel switching server;

After receiving the fast channel request message, the fast channel switching server determines whether a network between the fast channel switching server and the set top box that sends the fast channel switching request message has undergone network address translation;

And the fast channel switching server forms a sending policy corresponding to the result according to whether the network between the fast channel switching server and the set top box determined by the network channel address has been subjected to network address translation;

The fast channel switching server transmits a fast channel switching request response and a media stream according to the sending policy.

With reference to the first aspect, in a first implementation manner of the first aspect, the fast channel switching request message carries an IP address of the set top box, and the fast channel switching server determines the fast channel switching server. Whether the network between the set top box that sends the fast channel switching request message has undergone network address translation includes:

The fast channel switching server compares the IP address of the set top box with the source IP address of the fast channel switching request message to determine whether the IP address of the set top box and the source IP address of the fast channel switching request message are the same. Where the IP address of the set top box and the fast channel If the source IP address of the handover request message is the same, it indicates that the network between the fast channel switching server and the set top box has not undergone network address translation, if the IP address of the set top box and the source IP address of the fast channel switching request message Different, it means that the network between the fast channel switching server and the set top box has undergone network address translation.

With reference to the first aspect, in a second implementation manner of the first aspect, the fast channel switching server determines whether a network between the fast channel switching server and a set top box that sends the fast channel switching request message is After network address translation, including:

The fast channel switching server receives an indication message that is configured by the user to indicate whether the network between the fast channel switching server and the set top box has undergone network address translation.

In combination with the first implementation manner or the second implementation manner of the first aspect, in the third implementation manner of the first aspect, the fast channel switching request message further includes sending the fast channel switching a fast channel switching request message source port number of the request message, a fast channel switching request message destination IP address, and a fast channel switching request message destination port number;

After the network between the fast channel switching server and the set top box is subjected to network address translation, the forming a sending policy corresponding to the result includes:

The fast channel switching server generates a first media stream source port number, a first media stream source IP address, a first media stream destination port number, and a first media stream destination IP address; wherein the first media stream source port number is The fast channel switching request message destination port number is reduced by n, n is a non-zero integer, the first media stream source IP address is the same as the fast channel switching request message destination IP address, and the first media stream destination port number is The source IP address of the first media stream is the same as the source IP address of the fast channel switching request message;

The sending, by the fast channel switching server, the media stream according to the sending policy includes: sending, by the fast channel switching server, the first media stream source port number, the first media stream source IP address, and the third channel mode A media stream destination port number and a first media stream of the first media stream destination IP address.

In conjunction with the third implementation of the first aspect, a fourth implementation in the first aspect After the fast channel switching server determines that the first media stream fails to be sent, the method further includes:

The fast channel switching server generates a second media stream source port number, a second media stream source IP address, a second media stream destination port number, and a second media stream destination IP address; wherein the second media stream source port number and The destination number of the fast channel switching request message is the same, the IP address of the second media stream source is the same as the destination IP address of the fast channel switching request message, and the destination number of the second media stream is the same as the fast channel switching request. The source port number of the message source is the same, and the destination IP address of the second media stream is the same as the source IP address of the fast channel switching request message.

The fast channel switching server sends a second media stream including a second media stream source port number, a second media stream source IP address, a second media stream destination port number, and a second media stream destination IP address in a quintuple mode. The media data in the second media stream and the media data in the first media stream are the same or partially identical.

In a second aspect, the fast channel switching server provided by the embodiment of the present invention includes:

a first receiving unit, configured to receive a fast channel switching request message, where the fast channel switching request message is used to request a fast channel switching service from the fast channel switching server;

a first determining unit, configured to: after the first receiving unit receives the fast channel request message, the fast channel switching server determines between the fast channel switching server and a set top box that sends the fast channel switching request message Whether the network has undergone network address translation;

a policy generating unit, configured to form, according to a result of the network address translation between the fast channel switching server and the set top box determined by the first determining unit, forming a sending policy corresponding to the result; Switch request response and media stream.

With reference to the second aspect, in a first implementation manner of the second aspect, the fast channel switching request message carries an IP address of the set top box, and the first determining unit,

Specifically used for the IP address of the set top box and the source IP address of the fast channel switching request message. The address is compared to determine whether the I Ρ address of the set top box and the source I Ρ address of the fast channel switching request message are the same, wherein the IP address of the set top box is the same as the source IP address of the fast channel switching request message. The network between the fast channel switching server and the set top box is not subjected to network address translation. If the IP address of the set top box and the source IP address of the fast channel switching request message are different, the fast channel is indicated. The network between the switching server and the set top box undergoes network address translation.

With reference to the second aspect, in a second implementation manner of the second aspect, the first determining unit,

Specifically, the method is configured to receive an indication message that is configured by the user to indicate whether a network between the fast channel switching server and the set top box has undergone network address translation.

With reference to the first implementation manner or the second implementation manner of the second aspect, in a third implementation manner of the second aspect,

The fast channel switching request message further includes a fast channel switching request message source port number, a fast channel switching request message destination IP address, and a fast channel switching request message destination port number for transmitting the fast channel switching request message;

After the first determining unit determines that the network between the fast channel switching server and the set top box has undergone network address translation, the policy generating unit,

Specifically, the first media stream source port number, the first media stream source IP address, the first media stream destination port number, and the first media stream destination IP address are generated, where the first media stream source port number is the fast The channel switch request message destination port number minus n, n is a non-zero integer, the first media stream source IP address is the same as the fast channel switch request message destination IP address, the first media stream destination port number is The fast channel switching request message source port number is the same, and the first media stream destination IP address is the same as the fast channel switching request message source IP address;

The first sending unit is specifically configured to send, in the triplet mode, the first media stream source port number, the first media stream source IP address, the first media stream destination port number, and the first media stream destination IP address. The first media stream. With the third implementation of the second aspect, in a fourth implementation manner of the second aspect, after the fast channel switching server determines that the first media stream fails to be sent, the policy generating unit Also used for:

Generating a second media stream source port number, a second media stream source IP address, a second media stream destination port number, and a second media stream destination IP address; wherein the second media stream source port number and the fast channel switching request The destination port number of the message is the same, the IP address of the second media stream source is the same as the destination IP address of the fast channel switching request message, and the port number of the second media stream is the same as the source port number of the fast channel switching request message. The destination IP address of the second media stream is the same as the source IP address of the fast channel switching request message;

The first sending unit is further configured to send, in a quintuple mode, a second media stream source port number, a second media stream source IP address, a second media stream destination port number, and a second media stream destination IP address. The media stream in the second media stream and the media data in the first media stream are the same or partially identical.

In a third aspect, the data interaction system provided by the embodiment of the present invention includes a fast channel switching server and a set top box, where

The fast channel switching server is configured to receive a fast channel switching request message, where the fast channel switching request message is used to request a fast channel switching service from the fast channel switching server, determine the fast channel switching server, and send the fast Whether the network between the set top boxes of the channel switching request message has undergone network address translation, and forms a transmission policy corresponding to the result according to whether the network address translation has passed, and sends a fast channel switching request response according to the sending policy. Media stream

The set top box is configured to send the fast forward channel switching request message, and receive the fast channel switching request response and a media stream.

The data interaction method, device and system provided by the embodiment of the present invention, after the fast channel switching server receives the fast channel request message, the fast channel switching server determines the fast channel switching server and sends the fast channel switching. Is the network between the set-top boxes requesting messages? After the network address translation, the transmission policy is generated according to whether the network address translation has been performed, and the fast channel switching request response and the media stream are sent according to the sending policy, thereby ensuring that the network address translation is performed. The fast channel switching server can still send the media stream to the set top box. BRIEF DESCRIPTION OF THE DRAWINGS The accompanying drawings, which are incorporated in the drawings Other drawings can also be obtained from these drawings on the premise of creative labor.

FIG. 1 is a flowchart of a method for interacting data according to an embodiment of the present invention;

2 is a flowchart 1 of a method for interacting data according to an embodiment of the present invention;

3 is a second flowchart of a method for interacting data according to an embodiment of the present invention;

4 is a flowchart 3 of a method for interacting data according to an embodiment of the present invention;

FIG. 5 is a schematic structural diagram of a fast channel switching server according to an embodiment of the present invention;

FIG. 6 is a schematic structural diagram of a fast channel switching server according to an embodiment of the present invention;

FIG. 7 is a schematic structural diagram of an interaction system of data according to an embodiment of the present invention. detailed description

BRIEF DESCRIPTION OF THE DRAWINGS The technical solutions in the embodiments of the present invention will be described in detail with reference to the accompanying drawings. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments of the present invention without creative work are within the scope of the present invention.

In order to make the advantages of the technical solutions of the present invention clearer, the present invention will be described in detail below with reference to the accompanying drawings and embodiments.

As shown in FIG. 1, the data interaction method provided by the embodiment of the present invention includes:

101. The fast channel switching server receives the fast channel switching request message. The fast channel switching request message is used to request a fast channel switching service from the fast channel switching server.

102. After receiving the fast channel request message, the fast channel switching server determines whether a network between the fast channel switching server and the set top box that sends the fast channel switching request message has undergone network address translation.

Optionally, the fast channel switching request message may carry the IP address of the set top box. Specifically, the fast channel switching request message may be in a “3⁄4 text format, so the fast channel switching request message further carries The source IP address of the fast channel switching request message, the Internet Protocol (IP) address of the set top box is stored in the content of the text, and the fast channel switching request message The source IP address is stored in the IP header of the text. In this way, the fast channel switching server compares the IP address of the set top box with the source IP address of the fast channel switching request message to determine the set top box. Whether the IP address and the source IP address of the fast channel switching request message are the same, where the IP address of the set top box and the source IP address of the fast channel switching request message are the same, indicating the fast channel switching server and the The network between the set top boxes is not converted by network address, if the IP address of the set top box and the fast Different channel switching request message the source IP address, then the zapping network between the server and the set top box through the network address translation.

Alternatively, the fast channel switching server receives an indication message that is configured by the user to indicate whether the network between the fast channel switching server and the set top box has undergone network address translation.

103. The fast channel switching server forms a sending policy corresponding to the result according to whether the network between the fast channel switching server and the set top box determined by the fast channel switching server has undergone network address translation.

Specifically, the sending policy is a fast channel switching request response and a media stream returned by the fast channel switching server to the set top box according to whether the network address translation is performed.

IP address and port number, etc.

104. The fast channel switching server sends a fast channel switching request according to the sending policy. Should be as well as the media stream.

The fast channel switching server may send the fast channel switching request response and the media stream according to the IP address and the port number in the sending policy. The fast channel switching request response is a response to the fast channel switching request message, to inform the set top box that the fast channel switching server can provide a media stream for the set top box, where the media stream is in a fast channel switching service. Business data.

The data interaction method provided by the embodiment of the present invention, after the fast channel switching server receives the fast channel request message, the fast channel switching server determines the fast channel switching server and the set top box that sends the fast channel switching request message. Whether the network has undergone network address translation, and then generates a transmission policy according to whether the network address translation has passed, and performs a fast channel switching request response and a media stream transmission according to the sending policy, thereby ensuring that the network is transmitted through the network. In the case of address translation, the fast channel switching server can still send the media stream to the set top box.

The method for interacting data provided by the embodiment of the present invention, as shown in FIG. 2, includes:

201. The set top box sends a fast channel switching request message to the fast channel switching server.

The fast channel switching request message is used to request a fast channel switching service from the fast channel switching server.

Specifically, the fast channel switching request message carries a fast channel switching request message source port number, a fast channel switching request message source IP address, a fast channel switching request message destination IP address, and a fast Channel switch request message destination port number. At the same time, the fast channel switching request message further carries the IP address of the organic set top box. Specifically, the fast channel switching request message may be in the form of a message, and the IP address of the set top box is stored in the packet of the packet. In the content, the fast channel switching request message source IP address is stored in the IP header of the message.

Go to step 202 or step 203:

202. The fast channel switching server compares an IP address of the set top box with a source IP address of the fast channel switching request message, and determines that the determined result is an IP address of the set top box and the fast channel switching request message. The source IP address is the same. Proceed to step 204. The IP address of the set top box and the source IP address of the fast channel switching request message are the same, indicating that the network between the fast channel switching server and the set top box has not undergone network address translation.

For example, the IP address of the set top box and the IP address of the fast channel switching server are both a network protocol version 4 (Internet Protocol Protocol 4, IPv4 for short) public network address, and the fast channel switching server and the The network between the set-top boxes can communicate normally without network address translation.

203. The fast channel switching server receives an indication message that is configured by the user to indicate that the network between the fast channel switching server and the set top box has not undergone network address translation. Continue with step 204.

204. The fast channel switching server generates a fast channel switching request response source port number, a fast channel switching request response source IP address, a fast channel switching request response destination port number, and a fast channel switching request response destination. IP address.

The fast channel switching request response source port number is the same as the fast channel switching request message destination port number, and the fast channel switching request response source IP address is the same as the fast channel switching request message destination IP address, The fast channel switching request response destination port number is the same as the fast channel switching request message source port number, and the fast channel switching request response destination IP address is the same as the fast channel switching request message source IP address.

205. The fast channel switching server generates a media stream source port number, a media stream source IP address, a media stream destination port number, and a media stream destination IP address of the media stream. Continue to step 206.

The media stream source port number is the destination number of the fast channel switching request message minus 1, the media stream source IP address is the same as the fast channel switching request message destination IP address, and the media stream destination port number is The source port number of the fast channel switching request message is decremented by one, and the IP address of the media stream is the same as the source IP address of the fast channel switching request message.

206. The fast channel switching server sends the fast to the set top box by using a fast channel switching request response source port number, a fast channel switching request response source IP address, a fast channel switching request response destination port number, and a fast channel switching request response destination IP address. Channel switch request response. The fast channel switching request response is used to notify the set top box that the fast channel switching server can provide the media stream to the set top box.

207. The fast channel switching server sends the media stream to the set top box by using the media stream source port number, the media stream source IP address, the media stream destination port number, and the media stream destination IP address.

The media stream is service data (such as TV program content, etc.) in the fast channel switching service, and the media stream destination port number is different from the fast channel switching request response source port number. The port number is different from the fast channel switching request response destination port number, so when the set top box receives the fast channel switching request response and the media stream, the fast channel switching request response can be distinguished by the port number. The media stream avoids confusing the fast channel switch request response with the media stream.

In addition, as shown in FIG. 3, a method for interacting data according to another embodiment of the present invention includes:

Step 301: The set top box sends a fast channel switching request message to the fast channel switching server. The fast channel switching request message is used to request a fast channel switching service from the fast channel switching server.

Go to step 302 or step 303:

302. The fast channel switching server compares an IP address of the set top box with a source IP address of the fast channel switching request message, and determines that the determined result is an IP address of the set top box and the fast channel switching request message. The source IP address is not the same. Continue to step 304.

The IP address of the set top box and the source IP address of the fast channel switching request message are different. The network between the fast channel switching server and the set top box is subjected to network address translation, and a network address translation device is disposed between the fast channel switching server and the set top box, and is configured to switch to the fast channel switching server. The network between the set top boxes performs network address translation.

For example, if the IP address of the set top box is an IPv4 private network address, and the IP address of the fast channel switching server is an I Pv4 public network address, the network address translation device can masquerade the IP address of the IP address as an IPv4 public network address. In order to facilitate communication between the set top box and the fast channel switching server.

303. The fast channel switching server receives an indication message that is configured by the user to indicate that the network between the fast channel switching server and the set top box has undergone network address translation. Continue with step 304.

304. The fast channel switching server generates a fast channel switching request response source port number, a fast channel switching request response source IP address, a fast channel switching request response destination port number, and a fast channel switching request response destination. IP address.

The fast channel switching request response source port number is the same as the fast channel switching request message destination port number, and the fast channel switching request response source IP address is the same as the fast channel switching request message destination IP address, The fast channel switching request response destination port number is the same as the fast channel switching request message source port number, and the fast channel switching request response destination IP address is the same as the fast channel switching request message source IP address, so that the The fast channel switching request response traverses the network address translation device to the set top box.

305. The fast channel switching server generates a first media stream source port number, a first media stream source IP address, a first media stream destination port number, and a first media stream destination IP address.

The first media stream source port number is the fast channel switching request message destination port number minus n, n is a non-zero integer, that is, n can be a positive integer or a negative integer, preferably η=1, The first media stream source IP address is the same as the fast channel switching request message destination IP address, the first media stream destination port number is the same as the fast channel switching request message source port number, and the first media stream destination is The IP address is the same as the source IP address of the fast channel switching request message. The setting is based on the default network address translation device being a triplet mode network address translation device, In the subsequent step, if the sending of the first media stream is successful, the network address translation device is a triplet mode network address translation device. If the first media stream fails to be sent, the network address translation device is five. Tuple mode network address translation device.

306. The fast channel switching server sends the fast to the set top box by using a fast channel switching request response source port number, a fast channel switching request response source IP address, a fast channel switching request response destination port number, and a fast channel switching request response destination IP address. Channel switch request response.

The fast channel switching request response is used to notify the set top box that the fast channel switching server can provide the media stream to the set top box.

307. The fast channel switching server sends, in a triplet mode, the first media stream source port number, the first media stream source IP address, the first media stream destination port number, and the first media stream destination IP address. A media stream.

The first media stream source port number is a source port number for sending the first media stream, and the first media stream source IP address is a source IP address for sending the first media stream, the first The port number of the media stream is a destination port number for sending the first media stream, and the destination IP address of the first media stream is a destination IP address for sending the first media stream.

The first media stream is service data (such as TV program content, etc.) in the fast channel switching service, and further, since the first media stream source port number is different from the fast channel switching request response source port number, When the set top box receives the fast channel switching request response and the first media stream, the fast channel switching request response and the first media stream can be distinguished by different port numbers, avoiding the fast The channel switch request response is confusing with the first media stream.

If the first media stream is successfully sent in step 307, that is, the first media stream fails to reach the set top box or fails to pass the NAT device, the network between the fast channel switching server and the set top box passes through the triplet mode network. Network address translation of the address translation device. A triplet mode network address translation device is disposed between the fast channel switching server and the set top box (the triplet mode network address translation device maps all requests from the same internal IP address and port to the same external IP address And port, any external host can send IP packets to the internal host through the mapping). If the sending of the first media stream fails in step 307, that is, the first media stream arrives at the set top box or the first media stream successfully passes through the NAT device, further as shown in FIG. 4, steps 301-307 in FIG. 4 are the same as in FIG. , will not repeat them here. FIG. 4 focuses on the following steps: After the first media stream fails to be sent in the foregoing step 307, the method further includes the following steps:

308. The fast channel switching server generates a second media stream source port number, a second media stream source IP address, a second media stream destination port number, and a second media stream destination IP address. The setting is that after the first media stream fails to be sent, the network address translation device is considered to be a five-tuple mode network address translation device (when the same internal host uses the port corresponding to the same port number and the external of the different IP address) When the host communicates, the five-tuple mode network address translation device will have different mappings to the internal host. The five-tuple mode network address translation device does not guarantee the binding between the private network IP address and the public network IP address in all sessions. The consistency is determined, and when the second media stream is sent, it will be transmitted in the quintuple mode.

The second media stream source port number is the same as the fast channel switching request message destination port number, and the second media stream source IP address is the same as the fast channel switching request message destination IP address, the second The port number of the media stream is the same as the source port number of the fast channel switching request message, and the destination IP address of the second media stream is the same as the source IP address of the fast channel switching request message.

309. The fast channel switching server sends, in a quintuple mode, a second media that includes a second media stream source port number, a second media stream source IP address, a second media stream destination port number, and a second media stream destination IP address. flow.

The second media stream source port number is a source port number for sending the second media stream, and the second media stream source IP address is a source IP address for sending the second media stream, the second The port number of the media stream is the destination port number of the second media stream, and the destination IP address of the second media stream is the destination IP address of the second media stream.

The media data in the second media stream and the media data in the first media stream are the same or partially identical.

The second media stream is service data (such as a television program) in a fast channel switching service. Content, etc., further, because the fast channel switching server sends the fast channel switching request response and the second media stream source IP address, the second media stream destination IP address, and the second media stream source port of the second media stream And the port number of the second media stream are the same, so when the set top box receives the fast channel switching request response and the second media stream, in order to avoid the fast channel switching request response and the second The media stream is confusing, and the packet headers of the fast channel switching request response and the second media stream may be specifically analyzed, for example, according to the number of bits of the feedback message type of the two types of packets and the number of bits of the payload type. The fast channel switching request response and the second media stream are distinguished, but are not limited thereto.

As shown in FIG. 5, the fast channel switching server provided by the embodiment of the present invention is configured to implement the function of the fast channel switching server in any one of the embodiments corresponding to FIG. Optionally, the fast channel switching server as shown in FIG. 5 includes:

The first receiving unit 41 is configured to receive a fast channel switching request message.

The fast channel switching request message is used to request a fast channel switching service from the fast channel switching server. For the specific implementation, refer to step 101 in Figure 1, and details are not described herein.

a first determining unit 42 , configured to: after the first receiving unit 41 receives the fast channel request message, the fast channel switching server determines the fast channel switching server and a set top box that sends the fast channel switching request message Whether the network between the networks has undergone network address translation. For the specific implementation, refer to step 102 in Figure 1, and details are not described here.

The policy generating unit 43 is configured to form, according to the result that the network between the fast channel switching server and the set top box that the first determining unit 42 has passed the network address translation, form a sending corresponding to the result. Strategy. For the specific implementation, refer to step 103 in Figure 1, where not Let me repeat.

The first sending unit 44 is configured to send a fast channel switching request response and a media stream according to the sending policy generated by the policy generating unit 43. For the specific implementation, refer to step 104 in Figure 1, and no further details are provided here.

Optionally, as shown in FIG. 5, the fast channel switching request message carries an IP address of the set top box.

The first determining unit 42 is specifically configured to compare an IP address of the set top box with a source IP address of the fast channel switching request message to determine an IP address of the set top box and the fast channel switching request message. Whether the source IP address is the same, if the IP address of the set-top box is the same as the source IP address of the fast channel switching request message, it indicates that the network between the fast channel switching server and the set-top box has not undergone network address translation. If the IP address of the set top box is different from the source IP address of the fast channel switching request message, it indicates that the network between the fast channel switching server and the set top box has undergone network address translation.

Optionally, as shown in FIG. 5, the first determining unit 42 is specifically configured to receive an indication that is configured by the user to indicate whether the network between the fast channel switching server and the set top box has undergone network address translation. Message.

Further, as shown in FIG. 5, the fast channel switching request message further carries a fast channel switching request message source port number, a fast channel switching request message destination IP address, and a fast channel switching for transmitting the fast channel switching request message. The destination port number of the request message.

Optionally, when the first determining unit 42 determines that the network between the fast channel switching server and the set top box has not undergone network address translation, the policy generating unit 43

a fast channel switching request response source port number, a fast channel switching request response source IP address, a fast channel switching request response destination port number, and a fast channel switching request response destination IP address, which are used to generate the fast channel switching request response; The fast channel switching request response source port number is the same as the fast channel switching request message destination port number, and the fast channel switching request response source IP address is the same as the fast channel switching request message destination IP address, and the fast channel switching is performed. Request The response destination port number is the same as the fast channel switching request message source port number, and the fast channel switching request response destination IP address is the same as the fast channel switching request message source IP address.

In addition, the policy generating unit 43 is further configured to generate a media stream source port number, a media stream source IP address, a media stream destination port number, and a media stream destination IP address of the media stream, where the media stream source port number is For the fast channel switching request message, the destination port number is reduced by n, n is a non-zero integer, that is, n can be a positive integer or a negative integer, preferably n=l, the media stream source IP address and the fast channel The destination IP address of the switching request message is the same, the port number of the media stream is the source port number of the fast channel switching request message minus 1, and the destination IP address of the media stream is the same as the source IP address of the fast channel switching request message.

Specifically, as shown in FIG. 5, the fast channel switching request message carries a fast channel switching request message source port number, a fast channel switching request message destination IP address, and a fast channel switching request for sending the fast channel switching request message. The destination port number of the message.

Optionally, after the first determining unit 42 determines that the network between the fast channel switching server and the set top box has undergone network address translation, the policy generating unit 43

a fast channel switching request response source port number, a fast channel switching request response source IP address, a fast channel switching request response destination port number, and a fast channel switching request response destination IP address, which are used to generate the fast channel switching request response; The fast channel switching request response source port number is the same as the fast channel switching request message destination port number, and the fast channel switching request response source IP address is the same as the fast channel switching request message destination IP address, and the fast channel switching is performed. The request response destination port number is the same as the fast channel switch request message source port number, and the fast channel switch request response destination IP address is the same as the fast channel switch request message source IP address.

The policy generating unit 43 is further configured to generate a first media stream source port number, a first media stream source IP address, a first media stream destination port number, and a first media stream destination IP address; wherein the first media stream The source port number is the destination number of the fast channel switching request message minus n, n is a non-zero integer, and the first media stream source IP address is the same as the destination IP address of the fast channel switching request message, the first media The port number of the flow is the same as the source port number of the fast channel switching request message, the first medium The body stream destination IP address is the same as the fast channel switching request message source IP address.

The first sending unit 44 is specifically configured to send, in the triplet mode, the first media stream source port number, the first media stream source IP address, the first media stream destination port number, and the first media stream destination IP address. The first media stream of the address. The first media stream source port number is a source port number for sending the first media stream, and the first media stream source IP address is a source IP address for sending the first media stream, the first media stream The destination port number is the destination port number of the first media stream, and the destination IP address of the first media stream is the destination IP address of the first media stream.

Further, as shown in FIG. 5, after the fast channel switching server determines that the first media stream fails to be sent, the policy generating unit 43 is further configured to:

The first sending unit 44 is further configured to send, in a quintuple mode, a second media stream source port number, a second media stream source IP address, a second media stream destination port number, and a second media stream destination IP address. The second media stream, the media data in the second media stream and the media data in the first media stream are the same or partially identical. The second media stream source port number is a source port number for sending the second media stream, and the second media stream source IP address is a source IP address for sending the second media stream, the second media stream The destination port number is the destination port number of the second media stream, and the destination IP address of the second media stream is the destination IP address of the second media stream.

The fast channel switching server provided by the embodiment of the present invention, after the fast channel switching server receives the fast channel request message, the fast channel switching server determines the fast channel switching server and the set top box that sends the fast channel switching request message. Whether the network has undergone network address translation, and then generates a transmission policy according to whether the network address translation has been performed, and according to The sending policy performs a fast channel switching request response and a media stream transmission, thereby ensuring that the fast channel switching server can still send the media stream to the set top box after the network address translation.

As shown in FIG. 6, the fast channel switching server provided by the embodiment of the present invention is configured to implement the function of the fast channel switching server in any one of the embodiments corresponding to FIG. Optionally, the fast channel switching server as shown in FIG. 6 includes:

The receiver 51 is configured to receive a fast channel switching request message.

The processor 52 is configured to: after the receiver 51 receives the fast channel request message, the fast channel switching server determines a network between the fast channel switching server and a set top box that sends the fast channel switching request message Whether it has undergone network address translation. For the specific implementation, refer to step 102 in Figure 1, and details are not described here.

The processor 52 is further configured to: according to the result that the network between the fast channel switching server and the set top box determined by the processor 52 has undergone network address translation, form a sending corresponding to the result Strategy. For the specific implementation, refer to step 103 in Figure 1, and no further details are provided here.

The transmitter 53 is configured to send a fast channel switching request response and a media stream according to the processor 52 sending a policy. For the specific implementation, refer to step 104 in Figure 1, and details are not described herein.

Optionally, as shown in FIG. 6, the fast channel switching request message carries an IP address of the set top box.

The processor 52 is configured to compare an IP address of the set top box with a source IP address of the fast channel switch request message to determine an IP address of the set top box and a source IP address of the fast channel switch request message. If the IP address of the set top box is the same as the source IP address of the fast channel switching request message, it indicates that the network between the fast channel switching server and the set top box has not undergone network address translation. The IP address of the set top box is different from the source IP address of the fast channel switching request message, indicating that the fast channel switching server and the set top box are The network has undergone network address translation.

Optionally, as shown in FIG. 6, the processor 52 is configured to receive an indication message that is configured by the user to indicate whether the network between the fast channel switching server and the set top box has undergone network address translation.

Further, as shown in FIG. 6, the fast channel switching request message further includes a fast channel switching request message source port number, a fast channel switching request message destination IP address, and a fast channel switching for transmitting the fast channel switching request message. The destination port number of the request message.

Optionally, when the processor 52 determines that the network between the fast channel switching server and the set top box has not undergone network address translation, the processor 52,

In addition, the processor 52 is further configured to generate a media stream source port number, a media stream source IP address, a media stream destination port number, and a media stream destination IP address of the media stream, where the media stream source port number is The destination number of the fast channel switching request message is decreased by one, and the IP address of the media stream source is the same as the destination IP address of the fast channel switching request message, and the port number of the media stream is the source port of the fast channel switching request message. The number is decreased by 1, and the IP address of the media stream is the same as the source IP address of the fast channel switching request message.

Specifically, as shown in FIG. 6, the fast channel switching request message carries a fast channel switching request message source port number, a fast channel switching request message destination IP address, and a fast channel switching request for sending the fast channel switching request message. The destination port number of the message.

Optionally, when the processor 52 determines between the fast channel switching server and the set top box After the network has undergone network address translation, the processor 52

The processor 52 is further configured to generate a first media stream source port number, a first media stream source IP address, a first media stream destination port number, and a first media stream destination IP address; wherein the first media stream source The port number is the destination number of the fast channel switching request message minus n, n is a non-zero integer, and the first media stream source IP address is the same as the destination IP address of the fast channel switching request message, the first media stream The destination port number is the same as the source address of the fast channel switching request message, and the destination IP address of the first media stream is the same as the source IP address of the fast channel switching request message.

The transmitter 53 is configured to send, in a triplet mode, the first media stream source port number, the first media stream source IP address, the first media stream destination port number, and the first media stream destination IP address. The first media stream.

Further, as shown in FIG. 6, after the fast channel switching server determines that the first media stream fails to be sent, the processor 52 is further configured to:

Generating a second media stream source port number, a second media stream source IP address, a second media stream destination port number, and a second media stream destination IP address; wherein the second media stream source port number and the fast channel switching request The destination port number of the message is the same, the IP address of the second media stream source is the same as the destination IP address of the fast channel switching request message, and the port number of the second media stream is the same as the source port number of the fast channel switching request message. The destination IP address of the second media stream is the same as the source IP address of the fast channel switching request message.

The transmitter 53 is further configured to send, in a five-tuple mode, a second media stream source port number, and a second a second media stream of the media stream source IP address, the second media stream destination port number, and the second media stream destination IP address, where the media data in the second media stream is the same as the media data in the first media stream or Partially the same.

The fast channel switching server provided by the embodiment of the present invention, after the fast channel switching server receives the fast channel request message, the fast channel switching server determines the fast channel switching server and the set top box that sends the fast channel switching request message. Whether the network has undergone network address translation, and then generates a transmission policy according to whether the network address translation has passed, and performs a fast channel switching request response and a media stream transmission according to the sending policy, thereby ensuring that the network is transmitted through the network. In the case of address translation, the fast channel switching server can still send the media stream to the set top box.

As shown in FIG. 7, the data interaction system provided by the embodiment of the present invention includes a fast channel switching server 61 and a set top box 62, and the fast channel switching server 61 and the set top box 62 are in the embodiment corresponding to FIG. 5 or FIG. Fast channel switching server and set-top box.

Optionally, the fast channel switching server 61 is configured to receive a fast channel switching request message, where the fast channel switching request message is used to request a fast channel switching service from the fast channel switching server, and determine the fast channel switching server. Whether the network between the set top box 62 that sends the fast channel switching request message has undergone network address translation, and forms a transmission policy corresponding to the result according to whether the network address translation has passed, and sends according to the sending policy. Fast channel switching request response and media stream.

Optionally, the set top box 62 is configured to send the fast forward channel switching request message, and receive the fast channel switching request response and the media stream.

For a specific implementation manner, refer to the specific embodiment of the fast channel switching server, which is not described here.

The data interaction system provided by the embodiment of the present invention, after the fast channel switching server receives the fast channel request message, the fast channel switching server determines the fast channel switching server and the set top box that sends the fast channel switching request message. Whether the network between the networks has gone through the network Address conversion, and then generating a transmission policy according to whether the network address translation has been performed, and performing a fast channel switching request response and a media stream transmission according to the transmission policy, thereby ensuring a fast channel in the case of network address translation. The switch server can still send media streams to the set top box.

Through the description of the above embodiments, those skilled in the art can clearly understand that the present invention can be implemented by means of software plus necessary general hardware, and of course, by hardware, but in many cases, the former is a better implementation. . Based on such understanding, the technical solution of the present invention, which is essential or contributes to the prior art, may be embodied in the form of a software product stored in a readable storage medium, such as a floppy disk of a computer. A hard disk or optical disk or the like includes instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to perform the methods described in various embodiments of the present invention.

The above is only the specific embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily think of changes or substitutions within the technical scope of the present invention. It should be covered by the scope of the present invention. Therefore, the scope of the invention should be determined by the scope of the claims.

Claims

claims

1. A data interaction method, characterized by including:

The fast channel switching server receives a fast channel switching request message, and the fast channel switching request message is used to request a fast channel switching service from the fast channel switching server;

After receiving the fast channel request message, the fast channel switching server determines whether the network between the fast channel switching server and the set-top box that sent the fast channel switching request message has undergone network address translation;

The fast channel switching server determines whether the network between the fast channel switching server and the set-top box has undergone network address translation, and forms a sending strategy corresponding to the result;

The fast channel switching server sends a fast channel switching request response and a media stream according to the sending policy.

2. The method according to claim 1, characterized in that, the fast channel switching request message carries the IP address of the set-top box, and the fast channel switching server determines the fast channel switching server and sends the fast channel switching Whether the network between the set-top boxes requesting the message has undergone network address translation, including:

The fast channel switching server compares the IP address of the set-top box with the source IP address of the fast channel switching request message to determine whether the IP address of the set-top box and the source IP address of the fast channel switching request message are the same. , wherein if the IP address of the set-top box is the same as the source IP address of the fast channel switching request message, it means that the network between the fast channel switching server and the set-top box has not undergone network address translation. If the set-top box If the IP address is different from the source IP address of the fast channel switching request message, it means that the network between the fast channel switching server and the set-top box has undergone network address translation.

3. The method according to claim 1, characterized in that, the fast channel switching server determines the communication between the fast channel switching server and the set-top box that sends the fast channel switching request message. Whether the network has undergone network address translation, including:

The fast channel switching server receives an indication message configured by the user to indicate whether the network between the fast channel switching server and the set-top box has undergone network address translation.

4. The method according to claim 2 or 3, characterized in that,

The fast channel switching request message also carries the fast channel switching request message source port number for sending the fast channel switching request message, the fast channel switching request message destination IP address, and the fast channel switching request message destination port number;

When the network between the fast channel switching server and the set-top box undergoes network address translation, forming a sending strategy corresponding to the result includes:

The fast channel switching server generates a first media stream source port number, a first media stream source IP address, a first media stream destination port number and a first media stream destination IP address; wherein the first media stream source port number is The destination port number of the fast channel switching request message is reduced by n, n is a non-zero integer, the first media stream source IP address is the same as the destination IP address of the fast channel switching request message, and the first media stream destination port number The source port number of the fast channel switching request message is the same, and the destination IP address of the first media stream is the same as the source IP address of the fast channel switching request message;

The fast channel switching server sending the media stream according to the sending policy includes: the fast channel switching server sending the first media stream source port number, the first media stream source IP address, the first media stream source IP address, the first media stream source port number, the first media stream source IP address, and the first media stream source port number in a triplet mode. A media stream destination port number and a first media stream destination IP address.

5. The method according to claim 4, wherein when the fast channel switching server determines that the first media stream fails to be sent, the method further includes:

The fast channel switching server generates a second media stream source port number, a second media stream source IP address, a second media stream destination port number, and a second media stream destination IP address; wherein the second media stream source port number and The destination port number of the fast channel switching request message is the same, the second media stream source IP address is the same as the destination IP address of the fast channel switching request message, the second media stream destination port number is the same as the fast channel switching request message The message source port number is the same, and the destination IP address of the second media stream is the same as the The source IP address of the fast channel switching request message is the same;

The fast channel switching server sends the second media stream including the second media stream source port number, the second media stream source IP address, the second media stream destination port number and the second media stream destination IP address in a five-tuple mode, The media data in the second media stream is the same or partially the same as the media data in the first media stream.

6. A fast channel switching server, characterized by including:

The first receiving unit is configured to receive a fast channel switching request message, where the fast channel switching request message is used to request a fast channel switching service from the fast channel switching server;

A first determining unit configured to determine, after the first receiving unit receives the fast channel switching request message, the fast channel switching server between the fast channel switching server and the set-top box that sent the fast channel switching request message. Whether the network has undergone network address translation;

A policy generation unit configured to form a sending policy corresponding to the result based on the result determined by the first determination unit of whether the network between the fast channel switching server and the set-top box has undergone network address translation; Switch request responses and media streams.

7. The fast channel switching server according to claim 6, wherein the fast channel switching request message carries the IP address of the set-top box, and the first determining unit,

Specifically used to compare the IP address of the set-top box and the source IP address of the fast channel switching request message to determine whether the IP address of the set-top box and the source IP address of the fast channel switching request message are the same, where if If the IP address of the set-top box is the same as the source IP address of the fast channel switching request message, it means that the network between the fast channel switching server and the set-top box has not undergone network address translation. If the IP address of the set-top box and If the source IP addresses of the fast channel switching request messages are different, it means that the network between the fast channel switching server and the set-top box has undergone network address translation.

8. The fast channel switching server according to claim 6, characterized in that the first confirmation fixed unit,

Specifically, it is used to receive an indication message configured by the user to indicate whether the network between the fast channel switching server and the set-top box has undergone network address translation.

9. The fast channel switching server according to claim 7 or 8, characterized in that, the fast channel switching request message also carries the fast channel switching request message source port number for sending the fast channel switching request message, and the fast channel switching request message. The destination IP address of the channel switching request message and the destination port number of the fast channel switching request message;

When the first determining unit determines that the network between the fast channel switching server and the set-top box has undergone network address translation, the policy generating unit,

Specifically used to generate a first media stream source port number, a first media stream source IP address, a first media stream destination port number and a first media stream destination IP address; wherein the first media stream source port number is the fast The destination port number of the channel switching request message is reduced by n, n is a non-zero integer, the source IP address of the first media stream is the same as the destination IP address of the fast channel switching request message, and the destination port number of the first media stream is the same as the destination IP address of the fast channel switching request message. The source port number of the fast channel switching request message is the same, and the destination IP address of the first media stream is the same as the source IP address of the fast channel switching request message;

The first sending unit is specifically configured to send the first media stream source port number, the first media stream source IP address, the first media stream destination port number and the first media stream destination IP address in triplet mode. ’s first media stream.

10. The fast channel switching server according to claim 9, characterized in that, when the fast channel switching server determines that the first media stream fails to be sent, the policy generation unit is also used to:

Generate a second media stream source port number, a second media stream source IP address, a second media stream destination port number, and a second media stream destination IP address; wherein the second media stream source port number is consistent with the fast channel switching request The message destination port number is the same, the second media stream source IP address is the same as the fast channel switching request message destination IP address, the second media stream destination port number is the same as the fast channel switching request message source port number, The second media stream destination IP address and the fast channel switching request message The source IP address is the same;

The first sending unit is also configured to send the second media stream source port number, the second media stream source IP address, the second media stream destination port number and the second media stream destination IP address in a five-tuple mode. Two media streams, the media data in the second media stream is the same or partially the same as the media data in the first media stream.

11. A data interaction system, characterized by including a fast channel switching server and a set-top box, wherein,

The fast channel switching server is used to receive a fast channel switching request message. The fast channel switching request message is used to request a fast channel switching service from the fast channel switching server. Determine the fast channel switching server and send the fast channel switching server. Whether the network between the set-top boxes of the channel switching request message has undergone network address translation, and based on the result of whether the network address translation has been performed, a sending strategy corresponding to the result is formed, and a fast channel switching request response is sent according to the sending strategy and media stream;

The set-top box is configured to send the fast channel switching request message, and receive the fast channel switching request response and media stream.