CN105471841B - A kind of transmission method and device of the multi-service data based on MSRP agreements - Google Patents

Abstract

The invention discloses a method and device for transmitting multi-service data based on the MSRP protocol, which is applied in the VoIP environment, including: extending the MSRP protocol in advance, and expanding the sending request packet into an extended packet including multiple different service interactions; Establish an MSRP link from the first device to the second device through the SIP protocol; obtain the type of the current service according to the data used to identify different service types in the extension packet of the data transmitted by the first device; according to the type of the current service And in an interactive manner, data transmission is realized through the packet corresponding to the type of the current service in the sending request packet. By extending the MSRP protocol and the interaction process, the present invention enables MSRP-based applications to support the transmission of multiple services such as short messages and files, and the transmission of these services can be completed in one link, which improves the utilization rate and reliability of the network, and can Improve user experience.

Description

A method and device for transmitting multi-service data based on MSRP protocol

technical field

The invention relates to the technical field of data transmission, in particular to a method and device for transmitting multi-service data based on the MSRP protocol.

Background technique

In mainstream VoIP systems such as softswitch, SIP and IMS, SIP+MSRP is usually used to realize the transmission of data services. There are still deficiencies and deficiencies in the application of this method in the wireless environment. The main disadvantages are as follows:

(1) The standard MSRP is a text-based content exchange protocol, which lacks support for the transmission of binary data services;

(2) In the wireless environment, because the network transmission resources are limited, and MSRP is a connection-oriented switching protocol, multiple connections need to be established for different types of service transmission.

In view of this, it is very necessary to provide a method and device for transmitting multi-service data based on the MSRP protocol.

Contents of the invention

The purpose of the present invention is to provide a method and device for transmitting multi-service data based on the MSRP protocol, so as to solve the problem that the traditional SIP+MSRP mode realizes that text transmission does not support binary data services, and different data service transmissions need to establish multiple MSRP links. However, in a wireless environment, due to limited network transmission resources, if MSRP links are frequently established, the network overhead will be large and the user experience will be poor.

In order to solve the above technical problems, the present invention provides a method for transmitting multi-service data based on the MSRP protocol, which is applied in a VoIP environment, including:

Extend the MSRP protocol in advance, and expand the send request packet into an extended packet containing a variety of different business interactions;

Establishing an MSRP link from the first device to the second device through the SIP protocol;

Acquiring the type of the current service according to the data used to identify different service types in the extension packet of the data transmitted by the first device;

According to the type of the current service and the interaction mode, the data transmission is realized through the packet corresponding to the type of the current service in the sending request packet.

Optionally, said extending the MSRP protocol in advance, and extending the sending request packet to include multiple different service interaction extension packets includes:

The MSRP protocol is extended in advance, and the sending request packet is expanded from the original packet to four types of extended packets including NOTIFY packet, DATA packet, REQUEST packet and REPLY packet.

Optionally, according to the type of the current service and the interaction mode, implementing the data transmission through the packet corresponding to the type of the current service in the sending request packet includes:

When the interaction mode of the current service is short message interaction, the first device directly sends a short message to the second device through the original packet; the second device directly sends a short message to the second device through the original packet A device replies to the short message.

Optionally, according to the type of the current service and the interaction mode, implementing the data transmission through the packet corresponding to the type of the current service in the sending request packet includes:

When the interaction mode of the current service is a file PULL mode, the first device sends the REQUEST packet to the second device to request a specified file or data;

After the second device receives the request, it searches whether there is the file or data locally, and informs the first device through the NOTIFY package; if the file or data exists, fills in the NOTIFY package with the Attributes of files or data;

After receiving the NOTIFY packet sent by the second device, the first device notifies the second device to start sending through the REPLY packet;

The second device sends the requested file or data to the first device until the sending is completed.

Optionally, according to the type of the current service and the interaction mode, implementing the data transmission through the packet corresponding to the type of the current service in the sending request packet includes:

When the interaction mode of the current service is the PUSH mode, the first device sends the NOTIFY packet to the second device to inform the attribute of the file or data to be sent;

After the second device receives the notification, it judges whether to receive the file or data from the first device, and returns through the REPLY packet;

After receiving the NOTIFY packet sent by the second device, the first device sends the file or data to the second device until the sending is completed.

Optionally, after transferring all files or data, further include:

The first device requests to disconnect the MSRP link through SIP.

The present invention also provides a multi-service data transmission device based on the MSRP protocol, which is applied in a VoIP environment, including:

The extension module is used to extend the MSRP protocol in advance, and expand the sending request packet into an extension packet including a variety of different business interactions;

An establishment module, configured to establish an MSRP link from the first device to the second device through the SIP protocol;

An acquisition module, configured to acquire the type of the current service according to the data used to identify different service types in the extension packet of the data transmitted by the first device;

The interaction module is configured to implement data transmission through the packet corresponding to the type of the current service in the sending request packet according to the type of the current service and the interaction mode.

Optionally, the extension module is specifically configured to extend the MSRP protocol in advance, and expand the sending request packet from the original packet to four types of extension packets including NOTIFY packet, DATA packet, REQUEST packet and REPLY packet.

Optionally, also include:

A disconnection module, configured to request disconnection of the MSRP link through SIP after all files or data are transmitted.

The MSRP protocol-based multi-service data transmission method and device provided by the present invention extend the MSRP protocol in advance, and expand the sending request packet into an extended packet containing multiple different service interactions; establish the first device to the second device through the SIP protocol After the MSRP link of the second device; according to the data used to identify different service types in the extension packet of the data transmitted by the first device, obtain the type of the current service; according to the type of the current service and the interaction mode, send the request packet with the The package corresponding to the type of current business, so as to realize the transmission of data. It can be seen that, under the premise of following the relevant standards of the IMS and SIP protocols, by extending the MSRP protocol and the interaction process, the MSRP-based application can support the transmission of multiple services such as short messages and files, and the transmission of these services can be linked in one time. It improves the utilization rate and reliability of the network, and can improve the user experience.

Description of drawings

Fig. 1 is the flow chart of a kind of embodiment of the transmission method of multi-service data based on MSRP protocol provided by the present invention;

Fig. 2 is the flow chart of another embodiment of the transmission method of multi-service data based on MSRP protocol provided by the present invention;

FIG. 3 is a schematic diagram of a session flow after using the extended MSRP protocol;

Fig. 4 is the process flowchart of short message interaction mode in another kind of embodiment of the transmission method of multi-service data based on MSRP protocol provided by the present invention;

Fig. 5 is the process flowchart of the file PULL mode in another embodiment of the transmission method of multi-service data based on MSRP protocol provided by the present invention;

Fig. 6 is the process flowchart of the file PUSH mode in another embodiment of the method for transmitting multi-service data based on the MSRP protocol provided by the present invention;

FIG. 7 is a structural block diagram of a specific embodiment of an apparatus for transmitting multi-service data based on the MSRP protocol provided by the present invention.

Detailed ways

In order to enable those skilled in the art to better understand the solution of the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. Apparently, the described embodiments are only some of the embodiments of the present invention, but not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

A flow chart of a specific embodiment of the method for transmitting multi-service data based on the MSRP protocol provided by the present invention is shown in Figure 1, the method is specifically applied in the VoIP environment, and may include:

Step S101: Extending the MSRP protocol in advance, expanding the sending request packet into an extended packet containing multiple different business interactions;

Step S102: establishing an MSRP link from the first device to the second device through the SIP protocol;

Step S103: Obtain the type of the current service according to the data used to identify different service types in the extension packet of the data transmitted by the first device;

Step S104: According to the type of the current service and the interaction mode, realize data transmission through the packet corresponding to the type of the current service in the sending request packet.

The multi-service data transmission method based on the MSRP protocol provided by the present invention extends the MSRP protocol in advance, expands the sending request packet into an extended packet containing multiple different service interactions; establishes the first device to the second device through the SIP protocol After the MSRP link; according to the data used to identify different service types in the extension packet of the data transmitted by the first device, the type of the current service is obtained; according to the type of the current service and the interaction method, by sending The corresponding package of the type, so as to realize the transmission of data. It can be seen that, under the premise of following the relevant standards of the IMS and SIP protocols, by extending the MSRP protocol and the interaction process, the MSRP-based application can support the transmission of multiple services such as short messages and files, and the transmission of these services can be linked in one time. It improves the utilization rate and reliability of the network, and can improve the user experience.

The flow chart of another embodiment of the method for transmitting multi-service data based on the MSRP protocol provided by the present invention is shown in Figure 2, and the method includes:

Step S201: Extend the MSRP protocol in advance, expand the sending request packet from the original packet to four types of extended packets including NOTIFY packet, DATA packet, REQUEST packet and REPLY packet;

Step S202: establishing an MSRP link from the first device to the second device through the SIP protocol;

Step S203: Obtain the type of the current service according to the data used to identify different service types in the extension packet of the data transmitted by the first device;

Step S204: According to the type of the current service and the interaction mode, the data transmission is realized by sending the packet corresponding to the type of the current service in the request packet.

Specifically, in order to be compatible with the MSRP protocol, the extended MSRP protocol puts the extension part into the content, and defines the Content-Type field as "application/cdcf" to indicate the extension package. The extended SEND request packet is divided into four types of packets: NOTIFY, DATA, REQUEST, and REPLY. The interaction of different services is realized through the interaction of the four types of packets. FIG. 3 is a schematic diagram of a session flow after using the extended MSRP protocol. Table 1 shows the newly added fields of the extended MSRP protocol.

Table 1

In this embodiment, the SEND request packet of the extended MSRP protocol is divided into five types of packets: original packet, NOTIFY, DATA, REQUEST, and REPLY, and the interaction of different services is realized through the interaction of the five types of packets. According to the different business types and interaction methods, the interaction process is divided into the following three types.

(1) Short message interaction mode

When the current service interaction mode is short message interaction, the first device directly sends a short message to the second device through the original packet; the second device directly replies the short message to the first device through the original packet.

The flow chart of the specific interaction process is shown in Figure 4, where A is used to represent the first device, and B is used to represent the second device, and the process includes:

Step S301: establishing an MSRP link from A to B through the SIP protocol;

Step S302: A directly sends a short message to B through the original packet;

Step S303: B directly replies the short message to A through the original packet;

Step S304: cyclically execute steps S302-S303 until the session ends;

Step S305: request to disconnect the MSRP link through SIP, and end the session.

(2) File PULL method

When the interaction mode of the current business is the file PULL mode, the first device sends the REQUEST packet to the second device to request the specified file or data; after receiving the request, the second device checks whether the file or data exists locally, and passes The NOTIFY packet informs the first device; if the file or data exists, fill in the attributes of the file or data in the NOTIFY packet; after the first device receives the NOTIFY packet sent by the second device, it notifies the second device through the REPLY packet Start sending; the second device sends the requested file or data to the first device until the sending is completed.

The flow chart of the specific interaction process is shown in Figure 5, including:

Step S401: establishing an MSRP link from A to B through the SIP protocol;

Step S402: A sends a REQUEST packet to B, requesting a specified file or data;

Step S403: After receiving the REQUEST, B checks whether the file or data exists locally, and informs A through a NOTIFY packet. If the file or data exists, the attributes of the file or data will be filled in NOTIFY.

Step S404: After receiving B's NOTIFY packet, A notifies B to start sending via REPLY;

Step S405: B sends the file or data requested by A to A until the sending is completed;

Step S406: cyclically execute steps S402-S405 until all files or data are transferred;

Step S407: A requests to disconnect the MSRP link through SIP, and ends the session.

(3) File PUSH method

When the interaction mode of the current business is PUSH, the first device sends a NOTIFY packet to the second device to inform the attributes of the file or data to be sent; after receiving the notification, the second device judges whether to receive the file or data from the first device , return through the REPLY packet; after receiving the NOTIFY packet sent by the second device, the first device sends the file or data to the second device until the sending is completed.

The flowchart of the specific interaction process is shown in Figure 6, including:

Step S501: establishing an MSRP link from A to B through the SIP protocol;

Step S502: A sends a NOTIFY packet to B, informing the attributes of the file or data to be sent;

Step S503: After receiving the NOTIFY, B decides whether to accept the data or file from A, and returns through the REPLY packet.

Step S504: After receiving B's NOTIFY packet, if A knows that B is ready, send data or files to B until the sending is completed;

Step S505: cyclically execute steps S502-S504 until all files or data are transferred;

Step S506: A requests to disconnect the MSRP link through SIP, and ends the session.

The present invention provides a method for transmitting multi-service data based on the MSRP protocol in a wireless VoIP environment. The method proposes a mechanism at the application layer. On the premise of following the relevant standards of the IMS and SIP protocols, by extending the MSRP protocol and The interactive process enables MSRP-based applications to support the transmission of multiple services such as short messages and files, and the transmission of these services can be completed in one link, which can improve network utilization and reliability, and improve user experience.

A structural block diagram of a specific embodiment of the multi-service data transmission device based on the MSRP protocol provided by the present invention is shown in Figure 7. The device is applied in a VoIP environment and includes:

The extension module 100 is used to extend the MSRP protocol in advance, and expand the sending request packet into an extension packet including multiple different business interactions;

An establishment module 200, configured to establish an MSRP link from the first device to the second device through the SIP protocol;

An acquisition module 300, configured to acquire the type of the current service according to the data used to identify different service types in the extension packet of the data transmitted by the first device;

The interaction module 400 is configured to realize data transmission through the packet corresponding to the type of the current service in the sending request packet according to the type of the current service and the interaction mode.

On the basis of the foregoing embodiments, the device for transmitting multi-service data based on the MSRP protocol provided by the present invention may further include:

A disconnection module, configured to request disconnection of the MSRP link through SIP after all files or data are transmitted.

The device for transmitting multi-service data based on the MSRP protocol provided by the present invention corresponds to the above method, and will not be repeated here.

To sum up, the MSRP protocol has become the standard for connection-oriented data applications in IMS. However, in wireless networks, especially in environments with relatively poor network quality, the availability of MSRP-based data applications in IMS is greatly reduced. Aiming at this problem, the present invention proposes a mechanism in the application layer, combined with the MSRP protocol, by modifying the relevant protocols and interaction processes, and under the premise of following the relevant standards of the IMS and SIP protocols, the MSRP-based applications can support short messages, files, etc. Transmission of various services.

Each embodiment in this specification is described in a progressive manner, each embodiment focuses on the difference from other embodiments, and the same or similar parts of each embodiment can be referred to each other.

The above description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the present invention will not be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (9)

1. a kind of transmission method of the multi-service data based on MSRP agreements, which is characterized in that be applied under VoIP environment, packet It includes：

MSRP agreements are extended in advance, request bag will be sent and be extended to the expanding packet interacted comprising a variety of different business；

The MSRP links of the first equipment to the second equipment are established by Session Initiation Protocol；

According to the data for identifying different service types in the expanding packet of first equipment transmission data, current business is obtained Type；

According to the type and interactive mode of the current business, pass through the class with the current business in the transmission request bag The corresponding packet of type realizes data transmission.

2. the transmission method of the multi-service data as described in claim 1 based on MSRP agreements, which is characterized in that described advance MSRP agreements are extended, transmission request bag, which is extended to the expanding packet interacted comprising a variety of different business, includes：

MSRP agreements are extended in advance, by the transmission request bag by original packet be extended to comprising NOTIFY packets, DATA packets, The expanding packet of four type of REQUEST packets and REPLY packets.

3. the transmission method of the multi-service data as claimed in claim 2 based on MSRP agreements, which is characterized in that the basis The type and interactive mode of the current business, by corresponding with the type of the current business in the transmission request bag Packet, realize data transmission include：

When the interactive mode of the current business is that short message interacts, first equipment is by the original packet directly to institute It states the second equipment and sends short message；Second equipment is directly disappeared to short described in first device replied by the original packet Breath.

4. the transmission method of the multi-service data as claimed in claim 2 based on MSRP agreements, which is characterized in that the basis The type and interactive mode of the current business, by corresponding with the type of the current business in the transmission request bag Packet, realize data transmission include：

When the interactive mode of the current business is file PULL modes, first equipment sends institute to second equipment REQUEST packets are stated, specified file or data are asked；

Whether after second equipment receives request, searching locally has the file or data, and passes through the NOTIFY packets and accuse Know first equipment；If the file or data exist, the file or the category of data are filled in the NOTIFY packets Property；

After first equipment receives the NOTIFY packets that second equipment is sent, described the is informed by the REPLY packets Two equipment start to send；

Second equipment sends the file or data of request to first equipment, until being sent completely.

5. the transmission method of the multi-service data as claimed in claim 2 based on MSRP agreements, which is characterized in that the basis The type and interactive mode of the current business, by corresponding with the type of the current business in the transmission request bag Packet, realize data transmission include：

When the interactive mode of the current business is PUSH modes, first equipment is to described in second equipment transmission NOTIFY packets inform the attribute of the file or data that will send；

After second equipment is notified, judge whether to receive file or data from first equipment, by described REPLY packets return；

After first equipment receives the REPLY packets that second equipment is sent, the file is sent to second equipment Or data, until being sent completely.

6. such as the transmission method of the multi-service data described in any one of claim 1 to 5 based on MSRP agreements, feature exists In after transferring all files or data, further including：

First equipment disconnects the MSRP links by SIP request.

7. a kind of transmitting device of the multi-service data based on MSRP agreements, which is characterized in that be applied under VoIP environment, packet It includes：

Expansion module will send request bag and be extended to comprising the friendship of a variety of different business for being extended in advance to MSRP agreements Mutual expanding packet；

Module is established, the MSRP links for establishing the first equipment to the second equipment by Session Initiation Protocol；

Acquisition module, for the number for identifying different service types in the expanding packet according to first equipment transmission data According to obtaining the type of current business；

Interactive module, for according to the type and interactive mode of the current business, by the transmission request bag with institute The corresponding packet of type of current business is stated, realizes data transmission.

8. the transmitting device of the multi-service data as claimed in claim 7 based on MSRP agreements, which is characterized in that the extension Module is specifically used in advance being extended MSRP agreements, and the transmission request bag is extended to by original packet comprising NOTIFY The expanding packet of packet, DATA packets, REQUEST packets and four type of REPLY packets.

9. the transmitting device of the multi-service data as claimed in claim 7 or 8 based on MSRP agreements, which is characterized in that also wrap It includes：

Module is disconnected, for after transferring all files or data, the MSRP links to be disconnected by SIP request.