WO2016123975A1 - Data transmission method and apparatus - Google Patents

Abstract

Provided are a data transmission method and apparatus. The method comprises: moving, by a source device, data to be transmitted in a source device RAM to a RapidIO packet according to a corresponding relationship between the RapidIO address space and the source device RAM, and transferring, by the source device, the RapidIO packet to a transmission network packet; sending, by the source device, the transmission network packet to a target device; transferring, by the target device, the received transmission network packet to the RapidIO packet; moving, by the target device, the RapidIO packet to an assigned storage position of a RAM according to a corresponding relationship between a RapidIO address space and the target device RAM, the assigned storage position and the RapidIO address space carried by the RapidIO packet corresponding to each other. The above technical solution addresses the problem in the related art caused by a large time delay in the process of base station information interaction, thus reducing a time delay in the process of data processing.

Description

Data transmission method and device Technical field

The present invention relates to the field of communications, and in particular to a data transmission method and apparatus.

Background technique

In the mobile communication system, as shown in FIG. 1, the radio access network is a base station (Base Station, abbreviated as BS) and a base station controller (BSC) or a radio network controller (Radio Network Controller, It is abbreviated as RNC. The mobile communication technology is rapidly developed by 2G/3G/4G. Due to factors such as the maintenance of the base station, there are more and more application scenarios for the message exchange between the base stations and the base station configuration information.

As shown in FIG. 2, a typical inter-base station message exchange process is described. The data of a certain memory space inside the base station device needs to be moved to a specified memory space of the target base station. The data is moved by the RapidIO interconnection device in the form of a message, and the transition between the RapidIO message and the transmission network message, and the forwarding of the transmission network, and finally moved to the specified memory space.

In addition to the RapidIO transport and transmission network transmission, the base station needs to complete the mutual conversion between the RapidIO packet and the transport network packet in order to realize the transmission of the memory message of the base station in the transmission network. Since the interaction of the message is timely transmitted to the interacting base station, the transmission process delay is too large, and the receiving base station cannot receive the interactive message of the opposite base station, which affects the communication performance between the devices. In the current technical implementation solution, the message conversion process introduces a large fixed delay, especially when the message length is long, and the delay is larger. The large delay problem of the message in the processing process severely restricts the improvement of the communication performance between the base station devices.

With the development of technology, more and more message interaction requirements between multiple base stations. Moreover, since there are multiple chips or boards of the RapidIO device in each base station (as shown in FIG. 3), the amount of data transmitted during the message exchange process is very large, and with the widespread application of the 10 Gbps rate transmission network, there is How to maximize the use of link bandwidth in the message interaction process.

In the related art, an effective solution has not been proposed for the problem of poor communication performance between the base station devices and low link bandwidth caused by a large delay in the base station information interaction process.

Summary of the invention

In order to solve the above technical problem, an embodiment of the present invention provides a data transmission method and apparatus.

According to an embodiment of the present invention, a data transmission method is provided, including: a source device moves data to be transmitted in a source device memory to a RapidIO packet according to a correspondence between a RapidIO address space and the source device memory, and Converting the RapidIO packet into a transport network packet; the source device sends the transport network packet to the destination device; and the destination device converts the received transport network packet into a RapidIO packet; Describe the device according to the RapidIO address space and The corresponding relationship of the memory in the destination device moves the RapidIO packet to a specified storage location of the memory, where the specified storage location corresponds to a RapidIO address space carried in the RapidIO packet.

In the embodiment of the present invention, the corresponding relationship between the RapidIO address space and the memory is set by: defining a message type of the RapidIO packet, where different message types correspond to different memory storage locations; The message type of the RapidIO packet sets the correspondence between the RapidIO address space and the specified storage location of the memory.

In the embodiment of the present invention, before the destination device moves the RapidIO packet to the specified storage location of the memory according to the corresponding relationship between the RapidIO address space and the memory in the destination device, the destination device further includes:

The destination device obtains the RapidIO address space information according to the header of the RapidIO packet and a preset mapping relationship, where the mapping relationship is a mapping relationship between the header and the RapidIO address space.

According to another embodiment of the present invention, a data transmission method is further provided, including: receiving a transport network packet sent by a source device; mapping the transport network packet to a RapidIO packet according to a preset mapping relationship; according to RapidIO Corresponding relationship between the address space and the storage location of the memory in the destination device, the RapidIO packet is transmitted to the specified storage location of the memory, where the specified storage location corresponds to the RapidIO address space carried in the RapidIO packet. .

In the embodiment of the present invention, the mapping relationship includes: a first mapping relationship; mapping the transport network packet to a RapidIO packet according to a preset mapping relationship, including: a first fragmentation report for the transport network packet Obtaining a RapidIO device identifier according to the first mapping relationship according to the header information of the first fragmentation packet or the non-fragmentation packet according to the first fragmentation packet or the non-fragmentation packet header; according to the RapidIO device The identifier is mapped to the RapidIO packet of the RapidIO device indicated by the RapidIO device identifier.

In the embodiment of the present invention, the mapping relationship further includes: a second mapping relationship; mapping the transport network packet to the RapidIO packet according to the mapping relationship, including: in the fragmented packet of the transport network packet A packet other than the first fragment packet, according to the header of the other packet, obtains a transport network routing address and/or a fragmented packet identifier; according to the routing address and/or the fragmented packet identifier according to the second mapping Obtaining a header of the transport network packet; acquiring the RapidIO device identifier according to the header of the transport network packet and the first mapping relationship; and mapping the transport network packet to the remote IP address according to the RapidIO device identifier The RapidIO packet of the RapidIO device indicated by the RapidIO device identifier.

In the embodiment of the present invention, the RapidIO device identifier includes at least one of the following: a device number of the RapidIO device and the RapidIO address space.

In the embodiment of the present invention, the correspondence between the RapidIO address space and the memory is set by: defining a message type of the RapidIO packet, where different message types correspond to different memory storage locations; according to the RapidIO packet The message type sets the correspondence between the RapidIO address space and the specified storage location of the memory.

According to another embodiment of the present invention, a data transmission method is further provided, including: moving data to be transmitted in the memory to the RapidIO according to a correspondence between a RapidIO address space in a RapidIO packet and a memory in a source device. In the message, the RapidIO packet is mapped to a transport network packet according to a preset mapping relationship; and the transport network packet is transmitted to the destination device.

In the embodiment of the present invention, the mapping relationship includes: a first mapping relationship; mapping the RapidIO packet to a transport network packet according to a preset mapping relationship, including: a first fragmentation of the RapidIO packet Obtaining, according to the first mapping relationship, the RapidIO device identifier according to the header of the first fragmentation packet or the non-fragmented packet, according to the header information of the packet or the non-fragmented packet of the RapidIO packet; The RapidIO device identifier maps the RapidIO packet of the RapidIO device indicated by the RapidIO device identifier to the transport network packet.

In the embodiment of the present invention, the mapping relationship includes: a second mapping relationship; mapping the RapidIO packet to a transport network packet according to a preset mapping relationship, including: a fragment report for the RapidIO packet The packet other than the first fragment packet receives the routing address and/or the fragment packet identifier of the transport network according to the header of the other packet; and identifies the routing address and/or the fragment packet according to the routing address. Acquiring the header of the RapidIO packet according to the second mapping relationship; acquiring the RapidIO device identifier according to the header of the transport network packet and the first mapping relationship; and the RapidIO device identifier according to the RapidIO device identifier The RapidIO packet indicating the RapidIO device is mapped to the transport network packet.

According to another embodiment of the present invention, a data transmission system is provided, including: a source device, configured to move data to be transmitted in the source device memory to RapidIO according to a correspondence between a RapidIO address space and the source device memory. Transmitting, in the message, the RapidIO packet to a transport network packet, and sending the transport network packet to the destination device; the destination device is configured to convert the received transport network packet into a RapidIO packet, and the RapidIO packet is moved to a specified storage location of the memory according to a correspondence between the RapidIO address space and the memory in the destination device, where the specified storage location is carried in the RapidIO packet. The RapidIO address space is corresponding.

In the embodiment of the present invention, the source device and/or the destination device are further configured to set a correspondence between a RapidIO address space and a memory by: defining a message type of the RapidIO packet, where different message types correspond to Different memory storage locations; setting a correspondence between the RapidIO address space and the memory specified storage location according to the message type of the RapidIO packet.

In the embodiment of the present invention, the destination device is further configured to obtain the RapidIO address space information according to a header of the RapidIO packet and a preset mapping relationship, where the mapping relationship is the header and the location. The mapping relationship of the RapidIO address space.

According to another embodiment of the present invention, a data transmission apparatus is further provided, including: a receiving module, configured to receive a transport network message sent by the source device; and a mapping module configured to set the transmission network according to a preset mapping relationship The packet is mapped to a RapidIO packet; the transmission module is configured to transmit the RapidIO packet to a specified storage location of the memory according to a correspondence between the RapidIO address space and a storage location of the memory in the destination device, where the specified storage location Corresponding to the RapidIO address space carried in the RapidIO packet.

In the embodiment of the present invention, the mapping module is configured to: when the mapping relationship includes: the first mapping relationship, the first acquiring unit is configured to be in a first fragmented message or a message for the transport network packet When the non-fragmented packet of the transport network packet is described, the RapidIO device identifier is obtained according to the first mapping relationship according to the header of the first fragmented packet or the non-fragmented packet; The RapidIO device identifier maps the transport network message to a RapidIO packet of the RapidIO device indicated by the RapidIO device identifier.

In the embodiment of the present invention, the mapping module is configured to include: when the mapping relationship further includes: the second mapping relationship: The second obtaining unit is configured to obtain, according to the header of the other packet, the routing address and/or the fragmentation report of the transmission network according to the header of the other packet in the fragmented packet of the transport network packet. And a third obtaining unit, configured to acquire a header of the transport network packet according to the second mapping relationship according to the routing address and/or the fragment packet identifier; and the fourth acquiring unit is configured to be according to the transport network The header of the packet and the first mapping relationship are used to obtain the identifier of the RapidIO device. The mapping unit is further configured to map the transport network packet to the RapidIO device indicated by the RapidIO device identifier according to the RapidIO device identifier. RapidIO message.

According to another embodiment of the present invention, a data transmission apparatus is further provided, including: a moving module, configured to: the data to be transmitted in the memory according to a correspondence between a RapidIO address space in a RapidIO packet and a memory in a source device; Moving to the RapidIO packet; the mapping module is configured to map the RapidIO packet to a transport network packet according to a preset mapping relationship; and the transmitting module is configured to transmit the transport network packet to the destination device .

In the embodiment of the present invention, the mapping module is configured to: when the mapping relationship includes: the first mapping relationship, the method includes: a first acquiring unit, configured to be the first fragmented packet of the RapidIO packet, or the The non-fragmented packet of the RapidIO packet is obtained according to the first mapping relationship according to the header information of the first fragmentation packet or the non-fragment packet, and the mapping unit is set according to the The RapidIO device identifier maps the RapidIO packet of the RapidIO device indicated by the RapidIO device identifier to the transport network packet.

In the embodiment of the present invention, the mapping module is configured to: when the mapping relationship includes: the second mapping relationship, the second acquiring unit is configured to divide the first packet into the fragmented packet of the RapidIO packet. The packet other than the fragment packet obtains the transport network routing address and/or the fragment packet identifier according to the header of the other packet, and the third acquiring unit is configured to be based on the routing address and/or the fragment report. And obtaining, by the second identifier, the header of the RapidIO packet according to the second mapping relationship, where the fourth acquiring unit is configured to acquire the identifier of the RapidIO device according to the header of the transport network packet and the first mapping relationship; And mapping, according to the RapidIO device identifier, the RapidIO packet of the RapidIO device indicated by the RapidIO device identifier to the transport network packet.

Through the interaction process between the source device and the destination device, the source device first moves the data to be transmitted to the RapidIO packet, and converts the RapidIO packet into a transport network packet and sends the packet to the destination device. On the destination device side, the received transport network packet is converted into a RapidIO packet, and the RapidIO packet is moved to a specified storage location of the memory according to the corresponding relationship between the RapidIO address space and the memory in the destination device. The above technical solution solves the problem that the communication performance between the base station equipments is poor and the link bandwidth is low due to the large delay in the information exchange process of the base station in the related art, and the delay of the data processing process is reduced, and the delay can be maximized. Use the bandwidth resources of the transport network link.

DRAWINGS

The drawings described herein are intended to provide a further understanding of the invention, and are intended to be a part of the invention. In the drawing:

1 is a structural diagram of a radio access network in a related art;

2 is a schematic diagram of a message exchange process between base stations in the related art;

FIG. 3 is a schematic diagram of a message interaction process of large traffic between base stations in the related art; FIG.

4 is a flowchart of a data transmission method according to an embodiment of the present invention;

FIG. 5 is a schematic diagram of a solution to a data processing delay problem between internal devices of a base station according to an embodiment of the present invention; FIG.

6 is a schematic diagram of a mapping relationship of a data transfer process according to an embodiment of the present invention;

FIG. 7 is a structural block diagram of a data transmission apparatus according to an embodiment of the present invention; FIG.

FIG. 8 is a block diagram showing still another structure of a data transmission apparatus according to an embodiment of the present invention; FIG.

FIG. 9 is still another flowchart of a data transmission method according to an embodiment of the present invention; FIG.

Figure 10 is a block diagram of a further structure of a data transmission device according to an embodiment of the present invention;

Figure 11 is a block diagram showing still another structure of a data transmission device according to an embodiment of the present invention;

FIG. 12 is another flowchart of a data transmission method according to an embodiment of the present invention; FIG.

FIG. 13 is a structural block diagram of a data transmission system according to an embodiment of the present invention; FIG.

14 is a schematic diagram of data processing of a transmission network device in a transmission process according to an embodiment of the present invention;

FIG. 15 is a schematic diagram of data processing of a transmission process of a RapidIO interconnection device according to an embodiment of the present invention.

detailed description

The invention will be described in detail below with reference to the drawings in conjunction with the embodiments. It should be noted that the embodiments in the present application and the features in the embodiments may be combined with each other without conflict.

Other features and advantages of the invention will be set forth in the description which follows, The objectives and other advantages of the invention may be realized and obtained by means of the structure particularly pointed in the appended claims.

The technical solutions in the embodiments of the present invention are clearly and completely described in the following with reference to the accompanying drawings in the embodiments of the present invention. It is an embodiment of the invention, but not all of the embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative efforts shall fall within the scope of the present invention.

In order to solve the above technical problem, a data transmission method is provided in this embodiment. FIG. 4 is a flowchart of a data transmission method according to an embodiment of the present invention. As shown in FIG. 4, the method includes the following steps:

Step S402: Receive a transport network packet sent by the source device.

Step S404, mapping the transport network packet to a RapidIO packet according to a preset mapping relationship;

Step S406, according to the correspondence between the RapidIO address space and the storage location of the memory in the destination device, The RapidIO packet is transmitted to the specified storage location of the memory, where the specified storage location corresponds to the RapidIO address space carried in the RapidIO packet.

Through the above-mentioned various steps, it is possible to map the transport network packet sent by the source device to the RapidIO packet according to the preset mapping relationship, and then transmit the RapidIO packet to the specified storage location of the memory to solve the technical means. In the related art, the problem of poor communication performance between the base station devices and the low link bandwidth caused by the large delay in the base station information interaction process reduces the delay of the data processing process and maximizes the use of the transmission network link. Bandwidth resources.

Optionally, the technical solution of the foregoing step S404 can be implemented in the following two situations:

It should be noted that the RapidIO device identifier in the following two cases includes at least one of the following: the device number of the RapidIO device and the RapidIO address space.

First case

When the foregoing mapping relationship includes: the first mapping relationship, the technical solution embodied in step S404 is implemented according to the following technical solution: for the first fragmented packet of the transport network packet or the non-fragmented packet of the transport network packet, Obtaining, according to the foregoing first mapping relationship, the RapidIO device identifier according to the header of the first fragmentation packet or the non-fragmentation packet; mapping the transport network packet to the RapidIO of the RapidIO device indicated by the RapidIO device identifier according to the foregoing RapidIO device identifier Message.

Second case

When the foregoing mapping relationship includes: the second mapping relationship, the technical solution embodied in step S404 is implemented according to the following technical solution: for the packet other than the first fragmented packet in the fragmented packet of the transport network packet, Obtaining, according to the header of the other packet, the routing address of the transmission network and/or the identifier of the fragmented packet; obtaining the header of the transport network packet according to the second mapping relationship according to the routing address and/or the fragmented packet identifier; according to the foregoing header and The first mapping relationship acquires the identifier of the RapidIO device, and the foregoing transport network packet is mapped to the RapidIO packet of the RapidIO device indicated by the RapidIO device identifier according to the foregoing RapidIO device identifier.

It should be noted that, in an optional example of the embodiment of the present invention, the correspondence between the RapidIO address space and the storage location of the base station memory is set by: defining a message type of the RapidIO packet, where different message types correspond to different The memory storage location is set according to the message type of the above RapidIO packet, and the corresponding relationship between the RapidIO address space and the memory specified storage location is set.

In summary, the technical solution provided by the embodiment of the present invention, as shown in FIG. 5, solves the large delay of data processing between internal devices of the base station system by rationally dividing the memory space and mapping rules during data conversion. problem. Through this mapping rule (as shown in FIG. 6), the data transmission process between devices does not need to be processed and reorganized. By querying the maintained mapping table, the destination address of the transmission process and the destination memory of the data transfer can be obtained, thereby realizing the base station device. Data transmission and exchange method with large capacity and low latency.

A data transmission device is also provided in the embodiment to implement the above-mentioned embodiments and preferred embodiments. The descriptions of the modules involved in the device are described below. As used below, the term "module" A block" can implement a combination of software and/or hardware for a predetermined function. Although the devices described in the following embodiments are preferably implemented in software, hardware, or a combination of software and hardware, is also possible and contemplated. 7 is a structural block diagram of a data transmission apparatus according to an embodiment of the present invention, as shown in FIG. 7, including:

The receiving module 70 is configured to receive a transport network packet sent by the source device.

The mapping module 72 is connected to the receiving module 70, and is configured to map the transport network packet into a RapidIO packet according to a preset mapping relationship;

The transmission module 74 is connected to the mapping module 72, and configured to transmit the RapidIO packet to a specified storage location of the memory according to a correspondence between a RapidIO address space and a storage location of a base station memory, wherein the designated storage location and the RapidIO packet are The RapidIO address space carried in the text is corresponding.

Through the integrated application of the foregoing modules, the transport network packet received from the source device can be mapped to the RapidIO packet according to the preset mapping relationship, and then the RapidIO packet is transmitted to the specified storage location of the memory. The technical means solves the problem that the communication performance between the base station devices is poor and the link bandwidth is low caused by the large delay in the base station information interaction process in the related art, and the delay of the data processing process is reduced, and the maximum delay can be achieved. Take advantage of the bandwidth resources of the transport network link.

As shown in FIG. 8, the mapping module 72 is configured to: when the mapping relationship includes: the first mapping relationship, the first obtaining unit 720 is configured to set the first fragmented packet or the foregoing transmission to the transport network packet. The non-fragmented packet of the network packet is obtained according to the first mapping relationship of the first fragmentation packet or the non-fragment packet, and the mapping unit 722 is connected to the first obtaining unit 720. The method is configured to map the transport network packet to a RapidIO packet of the RapidIO device indicated by the RapidIO device identifier according to the foregoing RapidIO device identifier.

In the embodiment of the present invention, the mapping module 72 is configured to: when the mapping relationship further includes: the second mapping relationship, the second obtaining unit 724 is configured to remove the first fragment from the fragmented packet of the transport network packet. The other packet except the packet obtains the transport network routing address and/or the fragmented packet identifier according to the header of the other packet. The third obtaining unit 726 is connected to the second obtaining unit 724 and configured to be based on the routing address and And the fragmented packet identifier is obtained by acquiring the header of the transport network packet according to the second mapping relationship. The fourth obtaining unit 728 is connected to the second obtaining unit 724, and configured to acquire the RapidIO device according to the foregoing header and the first mapping relationship. The mapping unit 722 is connected to the fourth obtaining unit 728, and is further configured to map the transport network packet to a RapidIO packet of the RapidIO device indicated by the RapidIO device identifier according to the foregoing RapidIO device identifier.

In order to improve the above technical solution, in the embodiment of the present invention, a data transmission method is further provided based on the data transmission process, and FIG. 9 is another flow chart of the data transmission method according to the embodiment of the present invention, as shown in FIG. , including the following steps:

Step S902: The data to be transmitted in the memory is moved to the RapidIO packet according to the correspondence between the RapidIO address space and the memory in the source device in the RapidIO packet.

Step S904, mapping the RapidIO packet to a transport network packet according to a preset mapping relationship;

Step S906, transmitting the foregoing transport network message to the destination device.

Through the above steps, the method of mapping the RapidIO packet to the transport network packet according to the preset mapping relationship and transmitting the transport network packet to the destination device can solve the related information in the related art. The problem of poor communication performance between the base station equipment and the low link bandwidth caused by the large delay is that the delay of the data processing process is reduced, and the bandwidth resources of the transmission network link can be utilized to the utmost.

In the embodiment of the present invention, the following technical solution may be implemented in the following steps: (1) The mapping relationship further includes: when the first mapping relationship is used, the first fragment packet of the RapidIO packet or the non-RapidIO packet is not And the fragmented packet obtains the RapidIO device identifier according to the first mapping relationship according to the first mapping message or the non-fragmented packet header; and the RapidIO device indicates the RapidIO device of the RapidIO device according to the RapidIO device identifier. The text is mapped to the foregoing transport network packet; (2) when the mapping relationship includes: the second mapping relationship, the packet other than the first fragmented packet in the fragmented packet of the RapidIO packet is according to the foregoing The header of the other packet obtains the routing address and/or the fragmented packet identifier of the transport network; and obtains the header of the RapidIO packet according to the second mapping relationship according to the routing address and/or the fragmented packet identifier; The header and the first mapping relationship are used to obtain the foregoing RapidIO device identifier; and the RapidIO device identifier is indicated by the RapidIO device identifier according to the foregoing RapidIO device identifier. The RapidIO message is mapped to the above transport network message.

A data transmission device is also provided in the embodiment to implement the above-mentioned embodiments and preferred embodiments. The descriptions of the modules involved in the device are described below. As used below, the term "module" may implement a combination of software and/or hardware of a predetermined function. Although the apparatus described in the following embodiments is preferably implemented in software, hardware, or a combination of software and hardware, is also possible and contemplated. FIG. 10 is a block diagram of still another structure of a data transmission apparatus according to an embodiment of the present invention. As shown in FIG. 10, the method includes:

The moving module 100 is configured to move the data to be transmitted in the memory to the RapidIO packet according to the correspondence between the RapidIO address space and the memory in the base station in the RapidIO packet;

The mapping module 102 is connected to the mobile module 100, and is configured to map the RapidIO packet to a transport network packet according to a preset mapping relationship.

The transmission module 104 is connected to the mapping module 102 and configured to transmit the foregoing transmission network message to the destination device.

Through the comprehensive application of the above modules, the technical means for mapping the RapidIO packet to the transport network packet according to the preset mapping relationship and transmitting the transport network packet to the destination device according to another mapping relationship is solved. In the related art, the problem of poor communication performance between the base station devices and the low link bandwidth caused by the large delay in the base station information interaction process reduces the delay of the data processing process and maximizes the use of the transmission network link. Bandwidth resources.

Optionally, FIG. 11 is a block diagram b of another structure of the data transmission apparatus according to the embodiment of the present invention. As shown in FIG. 11, the mapping module 102 is further configured to: when the mapping relationship includes: the first mapping relationship, including: An obtaining unit 1020 is configured to: according to the header packet of the RapidIO packet or the non-fragment packet of the RapidIO packet, according to the header of the first fragment packet or the non-fragment packet, according to the foregoing first The mapping relationship acquires the above-mentioned RapidIO device identifier; the mapping unit 1022 is connected to the first obtaining unit 1020, and is configured to mark the above-mentioned RapidIO device according to the above-mentioned RapidIO device identifier. And the mapping module 102 is configured to: when the mapping relationship includes: the second mapping relationship, the second obtaining unit 1024 is configured to be configured for the RapidIO packet. The packet in the fragmented packet, except for the first fragmented packet, obtains the transport network routing address and/or the fragmented packet identifier according to the header of the other packet; the third obtaining unit 1026, and the second obtaining unit a 1024 connection, configured to obtain a header of the RapidIO packet according to the second mapping relationship according to the routing address and/or the fragmentation packet identifier, and the fourth obtaining unit 1028 is connected to the third obtaining unit 1026, and configured to be configured according to the foregoing transmission network. The header of the packet and the first mapping relationship are used to obtain the identifier of the RapidIO device. The mapping unit 1022 is further configured to map the RapidIO packet of the RapidIO device indicated by the RapidIO device identifier to the transport network packet according to the identifier of the RapidIO device.

The foregoing embodiment provides a technical solution for data transmission from the source device and the destination device side. In order to better understand the technical solution of the foregoing embodiment, in the embodiment of the present invention, a focus is also on the source device. A data transmission scheme implemented by an interaction process with a destination device side. FIG. 12 is another flowchart of a data transmission method according to an embodiment of the present invention. As shown in FIG. 12, the method includes the following steps:

Step S1202: The source device moves the data to be transmitted in the source device memory to the RapidIO packet according to the corresponding relationship between the source address and the source device, and converts the RapidIO packet into a transport network packet.

Step S1204: The source device sends the foregoing transport network packet to the destination device.

Step S1206: The destination device converts the received transport network packet into a RapidIO packet.

Step S1208: The destination device moves the RapidIO packet to a specified storage location of the memory according to the corresponding relationship between the RapidIO address space and the memory in the destination device, where the designated storage location and the RapidIO address space carried in the RapidIO packet are corresponding.

Through the foregoing steps, the source device first moves the data to be transmitted to the RapidIO packet, and converts the RapidIO packet into a transport network packet and then sends the packet to the destination device. On the destination device side, the received transport network packet is converted into a RapidIO packet, and the RapidIO packet is moved to a specified storage location of the memory according to the corresponding relationship between the RapidIO address space and the memory in the destination device. The foregoing technical solution provided by the embodiment of the present invention solves the problem that the communication performance between the base station devices is poor and the link bandwidth is low caused by the large delay in the information exchange process of the base station in the related art, and the time of the data processing process is reduced. Delay, and can make maximum use of the bandwidth resources of the transmission network link.

In the embodiment of the present invention, the correspondence between the foregoing RapidIO address space and the foregoing memory may be set by: defining a message type of the above RapidIO packet, where different message types correspond to different memory storage locations; according to the above RapidIO packet The message type sets the mapping relationship between the RapidIO address space and the memory-specific storage location, that is, the different locations in the memory correspond to the RapidIO packets of different message types, and the corresponding relationship may be set by other methods. This is not limited.

Before performing the foregoing step S1208, the following technical solution may be further implemented: the destination device obtains the foregoing RapidIO address space information according to the header of the RapidIO packet and a preset mapping relationship, where the mapping relationship is the foregoing header and the RapidIO address space. Mapping relationship, obtaining the RapidIO address space letter according to the above technical solution After the information is received, the destination device moves the RapidIO packet to a specified storage location of the memory according to the corresponding relationship between the RapidIO address space and the memory in the destination device.

FIG. 13 is a structural block diagram of a data transmission system according to an embodiment of the present invention. As shown in FIG. 13, the source device 130 is configured to move data to be transmitted in a source device memory according to a correspondence between a RapidIO address space and the source device memory. And the RapidIO packet is converted into a transport network packet, and the transport network packet is sent to the destination device; the destination device 132 is connected to the source device 130, and is configured to receive the foregoing transport network. The packet is converted into a RapidIO packet, and the RapidIO packet is moved to a specified storage location of the memory according to the corresponding relationship between the RapidIO address space and the memory in the destination device, where the specified storage location is carried in the RapidIO packet. The RapidIO address space is corresponding.

Optionally, the source device 130 and/or the destination device 132 may set a mapping relationship between the RapidIO address space and the memory by: defining a message type of the RapidIO packet, where different message types correspond to different memory storage locations; The message type of the RapidIO packet sets the correspondence between the RapidIO address space and the memory specified storage location.

The destination device 132 is further configured to obtain the RapidIO address space information according to the header of the RapidIO packet and a preset mapping relationship, where the mapping relationship is a mapping relationship between the header and the RapidIO address space.

The above data transmission process is explained below in conjunction with an example, but is not intended to limit the embodiment of the present invention:

The core idea of an example of the embodiments of the present invention is to provide a new method for data transmission and exchange between large-capacity and low-latency base station devices, and a device capable of implementing the existing method, the example of the present invention is at the source base station. The device and the destination base station device respectively maintain a mapping rule table, and complete the mapping transmission of the RapidIO message and the transport network message through the mapping rule, thereby reducing the fixed delay of the message identification, reassembly, distribution, etc. during the processing, and maximizing the use of the transmission network link. The data bandwidth mainly includes the following steps:

The first step: reasonably divide the memory address space. The internal devices of the base station move data to each other through the RapidIO device. In the solution shown in Figure 4, the memory data is moved in message mode. The message header defines information such as the destination address, source address, and data type of the data. The payload data of a message is the data of the memory space. During the migration process of the RapidIO device, the header carries the address information of the RapidIO device, and the address space of the RapidIO device is compared with the memory space by reasonably dividing the address space of the memory. Through this correspondence, the RapidIO device can quickly move memory data.

The second step is to transmit the network device end. As shown in Figure 14, after receiving the transport network packet, the system device parses the packet and identifies whether the transport network packet needs to be mapped to RapidIO according to the key information such as the protocol type. Message. Based on the consideration of transmission efficiency, the transmission network messages are usually delivered in fragmented form during the delivery process, and the different fragments are alternately transmitted. If the packet is a non-fragmented packet or the first header of the fragmented packet, the message information number is directly extracted through the service data header, and the mapping relationship table is established by the message information number; If the packet is a fragmented packet, the routing information and the IP identifier of the transport network header are used to obtain the message information number by using the mapping relationship table, and the message number maps the address space to map the device identifier and address of the RapidIO device. Information such as space.

The third step: RapidIO device end, as shown in Figure 15, based on the transfer efficiency considerations, RapidIO messages are usually passed The process is delivered in the form of shards, and the different shards are alternately passed. The service data header usually only appears in the first fragmented packet of the RapidIO non-fragmented packet and the fragmented packet. In order to distinguish the fragments of different RapidIO data packets, the address space needs to be divided on the receiving side. RapidIO packets are divided into separate address spaces. In this way, for the first fragmented packet and the non-fragmented packet of the RapidIO packet, the control information header can be obtained directly from the service data header according to the first step; for other RapidIO fragmented packets, according to the address space of the RapidIO header. The field information and the address space division rule complete the mutual mapping of the address space and the control information header.

In the following, the steps of the method for data transmission and exchange of large-flow and low-delay between base station devices in the embodiment of the present invention are further analyzed, wherein the first step is:

101) Defining message types, each message corresponding to a different memory area; if the device is divided into several subsystems, each subsystem corresponds to a message type. Each subsystem shares or shares storage space.

102) Define the correspondence between the data RapidIO device address space and the memory space. The data is moved directly through the RapidIO device address space to find the corresponding message type and the memory space corresponding to the message.

The second step:

The system receives and parses the transport network packet; and determines whether the current received packet needs to be mapped to the RapidIO packet according to the protocol type of the transport network packet;

202) A transport network packet that needs to be further converted into a RapidIO packet. For the first fragmented packet and the non-fragmented packet of the transport network fragmented packet, the message header can be directly obtained according to the service data header, and the map is created and updated. The mapping table 2 shown in FIG. 5; for the RapidIO fragmentation header, the routing address and the fragment identifier of the transport network to be parsed need to be queried according to the mapping table 1 of FIG. 5 to obtain a corresponding message header;

203) According to the foregoing message header and the mapping rule of the mapping table 2, the message is dispatched to the dedicated receiving space of the destination memory, and the transmission of the transport network message to the RapidIO message is completed.

third step:

301) receiving the RapidIO packet data from each destination memory; determining, according to the message type of the RapidIO packet, whether the current received packet needs to be mapped to the transport network packet;

302) A RapidIO packet that needs to be further converted into a transport network packet. For the first fragmented packet and the non-fragmented packet of the RapidIO fragmented packet, the message header can be directly obtained according to the service data header, and the message header is created and updated. The mapping table 1 shown; for other RapidIO fragmented messages, the memory address space and the mapping rule of the mapping table 2 of FIG. 5 are queried to obtain a message header;

303) The foregoing message message, and the mapping rule of the mapping table 1 above, send the transmission network data to the destination device by using the forwarding device.

The above transmission network data and RapidIO data are processed in the transmission process, and the processing of data identification and forwarding is completed by creating and querying the mapping table 1 and the mapping table 2. The mapping implementation of the transmission process can be directly forwarded to the destination memory or the destination address for a fragmented packet or a MAC packet with a long length, without waiting for all fragments or numbers. According to the arrival, you can forward it. The bandwidth of the link is effectively utilized so that it can transmit larger amounts of data.

At the same time, the processing is completed by the search query mapping table. All the data of the transmission network link can be regarded as a series of fragmentation chains, and the operation of the packet header does not need to be reconstructed, so that the link does not need to wait for the processing time of the system. Reduce the fixed latency of data processing from the maximum millisecond level to the nanosecond level. Due to the greatly reduced fixed delay of data processing, the delay of the current base station RapidIO message transmitted to the destination base station through the transmission network will be almost the transmission delay and the migration delay.

In summary, the technical solution provided by the example of the present invention compares the processing mode of the traditional message transmission process, and the transmission mode of the mapping process makes the data processing capability no longer limited by the processing power of the system, to the greatest extent Take advantage of link bandwidth resources. At the same time, the data processing speed is faster, which greatly reduces the fixed delay of the data processing process.

In order to better understand the above data transmission process, the following technical solutions are described in detail in conjunction with the preferred embodiment 1 to the preferred embodiment 3, but are not used to limit the embodiments of the present invention:

Preferred embodiment 1:

When the RapidIO switching device or the RapidIO device of the system device is interconnected, in addition to receiving the RapidIO packet, it also receives the RapidIO device number information for identifying the source device of the RapidIO packet. The RapidIO packet is parsed, and the key information such as the protocol type is used to identify whether the RapidIO packet needs to be converted into an Ethernet packet. If the packet is a non-fragmented packet or a fragmented packet, the mapping table 1 is created by parsing the message header and the RapidIO device number information; If the packet is another fragmented packet, the address of the RapidIO packet is used to query the mapping table 2, and the message header of the current packet data is obtained. The destination packet is obtained according to the obtained message header and the mapping rule of the mapping table 1. The destination routing information and the fragment identifier of the device, and forward the current message data to the designated device of the destination base station according to the destination routing information and the fragment identifier.

The mapping rule of the routing address in the mapping table 1 is implemented as follows:

The routing address is mainly the next hop media access control (MAC) address, the destination IP address, and the virtual local area network (VLAN) information. One of the mapping relationships is as shown in the following table 1: All RapidIO device information is numbered, from 1 to M0, for a total of M0; all source system configuration information of the message header is numbered, from 1 to M2, for a total of M2 And make N=M0*M2. From number 1 to number N, each number corresponds to a set of transport network header routing information, which is an optional VLAN value, destination MAC, and optional destination IP.

Table 1: Mapping method of routing address

The mapping rule of the IP identifier in the mapping table 1 is implemented as follows:

The IP fragment identification mainly consists of distinguishing the fragmentation of the same message from the fragmentation of different messages. One of the mapping implementation methods is as follows: All RapidIO devices are numbered, from 1 to M0, for a total of M0; all destination base station devices are numbered, from 1 to M1, for a total of M1; all source base station devices Numbering, numbering from 1 to M2, totaling M2; numbering all packet types, numbering from 1 to M3, totaling M3. Considering that the IP identifier only needs to distinguish different fragmented packets within a certain period of time (assuming 10ms), it can be assumed that there are a total of M5 packets in a fixed period of time. Therefore, it is only necessary to make M0*M1*M2*M3 greater than or equal to M5 to distinguish different fragmented messages in a period of time. In addition, since the IP identifier is 16 bits in the header of the transport network, it needs to be adjusted so that M0*M1*M2*M3 is less than or equal to 65536, that is, M5<=M0*M1*M2*M3<=65536 in unit time.

Assume that the number of bytes transmitted by the 10G Ethernet interface is up to 12500000 bytes in 10ms. If the average length of the data type is 500bytes, the number of packets that need to be exchanged for 10ms is M5000. The other two are 16 data types. There are a total of 10 RapidIO device information numbers, a total of 16 destination system configuration information numbers, a total of 16 source system configuration information numbers, and a total of 16*10*16*16=40960 IP fragment identifiers, which can distinguish up to 25000 for 10ms. data pack. The IP identification field is numbered from 1 to 40960 and the number is less than 65536. After the number is adjusted, the mapping between the control information header and the fragment identifier is completed.

Preferred embodiment two:

After receiving the Ethernet packet, the system device parses the packet and identifies whether the Ethernet packet needs to be converted into a RapidIO packet according to the key information such as the protocol type. If the packet is a non-fragmented packet or the first fragment of the fragmented packet, the mapping table 2 is created directly through the parsed message header; if the packet is received, For the other packets of the fragmented packet, query the mapping table 1 according to the IP identifier and routing address of the transport network packet, and query the message header of the current packet data; according to the obtained message header and the mapping rule of the mapping table 2, Obtain the address space information of the RapidIO device, and according to the address space, move the current message data to the memory space of the specified device.

The mapping method of mapping table 2 is implemented as follows:

All the destination system configuration information of the message header is numbered, from 1 to M1, for a total of M1; all source system configuration information is numbered, from 1 to M2, for a total of M2; all packet types are performed. Number, number from 1 to M3, totaling M3; each packet type occupies an address space of M4. At the same time, M1*M2*M3*M4 is not larger than the maximum address space of the RapidIO device to access the programmable logic device. After the space division and number adjustment, the mapping between the address space and the message header is completed.

Preferred embodiment three:

In FIG. 14 and FIG. 15, the data is transmitted in the transmission network and the RapidIO interconnection architecture, and the data processing completes the identification, movement, forwarding, and the like of the data by creating and querying the mapping table 1 and the mapping table 2. In addition to the RapidIO packet mapping transport network In addition to the extra control information overhead of the message, the link data bandwidth can be greatly utilized.

Assume that the transmission network is a 10G transmission network, the packet type of the transmission network is IPV4 fragmented packets, and the MTU of the fragmented packets is set to 256. The total available payload data of the RapidIO device is about 9 Gbps, and the bandwidth is valid. The utilization rate is over 90%.

Assuming that the transmission network is a 100G transmission network, 20 RapidIO devices with a rate of 6.25 Gbps can be interconnected, and the bandwidth utilization rate of each RapidIO device is over 90%.

Similarly, in the transmission process of the transmission network and the RapidIO interconnection architecture, the data transmission capability of the embodiment of the present invention is not limited to the processing capability of the processing system such as the CPU, and is only related to the bandwidth of the transmission link. Thereby achieving high-speed data transmission and exchange capabilities.

Priority Example 4:

The above-mentioned transmission network data and RapidIO data are processed in the transmission process, and the data processing is completed by creating and querying the mapping table 1 and the mapping table 2, and relying on the search query mapping table, and the operation of the packet header is not required, so that the link does not need to wait for the system. Processing time.

Through the query of the mapping table, the conversion processing of the transmission network message and the RapidIO message is completed, which can be realized in hundreds of nanoseconds. It is far lower than the data processing delay of the microsecond level or even the millisecond level caused by the processing of packets by the CPU and the like in the prior art.

In summary, the embodiments of the present invention achieve the following technical effects: the problem of poor communication performance between the base station devices and low link bandwidth caused by a large delay in the base station information interaction process in the related art, and the data is reduced. The processing delay and the maximum utilization of the bandwidth resources of the transport network link.

In another embodiment, software is also provided for performing the technical solutions described in the above embodiments and preferred embodiments.

In another embodiment, a storage medium is further provided, wherein the software includes the above-mentioned software, including but not limited to: an optical disk, a floppy disk, a hard disk, an erasable memory, and the like.

It is to be understood that the terms "first", "second" and the like in the specification and claims of the present invention are used to distinguish similar objects, and are not necessarily used to describe a particular order or order. It is to be understood that the objects so used are interchangeable, where appropriate, so that the embodiments of the invention described herein can be carried out in a sequence other than those illustrated or described herein. In addition, the terms "comprises" and "comprises" and "the" and "the" are intended to cover a non-exclusive inclusion, for example, a process, method, system, product, or device that comprises a series of steps or units is not necessarily limited to Those steps or units may include other steps or units not explicitly listed or inherent to such processes, methods, products or devices.

It will be apparent to those skilled in the art that the various modules or steps of the present invention described above can be implemented by a general-purpose computing device that can be centralized on a single computing device or distributed across a network of multiple computing devices. Alternatively, they may be implemented by program code executable by the computing device so that they can be stored in the storage device Executed by the computing device, and in some cases, the steps shown or described may be performed in an order different than that herein, or they may be fabricated into individual integrated circuit modules, or multiple of them. Or the steps are made into a single integrated circuit module. Thus, the invention is not limited to any specific combination of hardware and software.

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

Industrial applicability

The foregoing technical solution provided by the embodiment of the present invention is applied to the data transmission process, and the source device first moves the data to be transmitted to the RapidIO packet through the interaction process between the source device and the destination device, and converts the RapidIO packet. The transport network packet is sent to the destination device, and the destination device side: converts the received transport network packet into a RapidIO packet; and the RapidIO is according to the correspondence between the RapidIO address space and the memory in the destination device. The message is moved to the specified storage location of the memory. The above technical solution solves the problem that the communication performance between the base station equipments is poor and the link bandwidth is low due to the large delay in the information exchange process of the base station in the related art, and the delay of the data processing process is reduced, and the delay can be maximized. Use the bandwidth resources of the transport network link.

Claims (20)

1. A data transmission method includes:

   The source device moves the data to be transmitted in the source device memory to the RapidIO packet according to the mapping between the source address and the source device, and converts the RapidIO packet into a transport network packet.

   Sending, by the source device, the transport network packet to a destination device;

   The destination device converts the received transport network packet into a RapidIO packet;

   The destination device moves the RapidIO packet to a specified storage location of the memory according to the corresponding relationship between the RapidIO address space and the memory in the destination device, where the specified storage location and the RapidIO address carried in the RapidIO packet are The space is corresponding.
2. The method of claim 1, wherein the correspondence between the RapidIO address space and the memory is set by:

   Defining a message type of the RapidIO packet, where different message types correspond to different memory storage locations;

   And setting a correspondence between the RapidIO address space and the specified storage location of the memory according to the message type of the RapidIO packet.
3. The method of claim 1, wherein the destination device further moves the RapidIO packet to a specified storage location of the memory according to a correspondence between a RapidIO address space and a memory in the destination device, and further includes:

   The destination device obtains the RapidIO address space information according to the header of the RapidIO packet and a preset mapping relationship, where the mapping relationship is a mapping relationship between the header and the RapidIO address space.
4. A data transmission method includes:

   Receiving a transmission network packet sent by the source device;

   Mapping the transport network packet to a RapidIO packet according to a preset mapping relationship;

   Transmitting the RapidIO packet to a specified storage location of the memory according to the mapping between the RapidIO address space and the storage location of the memory in the destination device, where the designated storage location and the RapidIO address space carried in the RapidIO packet are corresponding.
5. The method of claim 4, wherein the mapping relationship comprises: a first mapping relationship; mapping the transport network message to a RapidIO packet according to a preset mapping relationship, comprising:

   And according to the header of the first fragmented packet or the non-fragmented packet, according to the first fragmentation packet of the transport network packet or the non-fragmented packet of the transport network packet The mapping relationship obtains the RapidIO device identifier.

   Mapping the transport network message to the RapidIO device identifier according to the RapidIO device identifier RapidIO packets for RapidIO devices.
6. The method of claim 5, wherein the mapping relationship further comprises: a second mapping relationship; mapping the transport network message to the RapidIO packet according to the mapping relationship, comprising:

   And obtaining, in addition to the first fragment packet, the packet of the transport network packet, and obtaining the transport network routing address and/or the fragment packet identifier according to the header of the other packet;

   Obtaining, according to the routing information, the header of the transport network packet according to the second mapping relationship, according to the routing address and/or the fragment packet identifier;

   Obtaining the RapidIO device identifier according to the header of the transport network packet and the first mapping relationship;

   And mapping, according to the RapidIO device identifier, the transport network packet to a RapidIO packet of the RapidIO device indicated by the RapidIO device identifier.
7. The method of claim 5 or 6, wherein the RapidIO device identity comprises at least one of: a device number of the RapidIO device and the RapidIO address space.
8. The method according to claim 4, wherein the correspondence between the RapidIO address space and the memory is set by:

   Define the message type of the RapidIO packet, where different message types correspond to different memory storage locations;

   And setting a correspondence between the RapidIO address space and the specified storage location of the memory according to the message type of the RapidIO packet.
9. A data transmission method includes:

   And moving the data to be transmitted in the memory to the RapidIO packet according to the correspondence between the RapidIO address space and the memory in the source device in the RapidIO packet;

   Mapping the RapidIO packet to a transport network packet according to a preset mapping relationship;

   Transmitting the transport network message to the destination device.
10. The method of claim 9, wherein the mapping relationship comprises: a first mapping relationship; mapping the RapidIO packet to a transport network packet according to a preset mapping relationship, comprising:

    And the first mapping relationship is performed according to the header of the first fragmentation packet or the non-fragmented packet, for the first fragmentation packet of the RapidIO packet or the non-fragmentation packet of the RapidIO packet. Obtaining the RapidIO device identifier;

    Mapping the RapidIO packet of the RapidIO device indicated by the RapidIO device identifier to the transport network packet according to the RapidIO device identifier.
11. The method of claim 10, wherein the mapping relationship comprises: a second mapping relationship; mapping the RapidIO packet to a transport network packet according to a preset mapping relationship, comprising:

    For the fragmented message of the RapidIO packet, other than the first fragmented packet, according to the other The header of the packet obtains the routing address of the transport network and/or the identifier of the fragmented packet;

    Obtaining, according to the routing information, the header of the RapidIO packet according to the second mapping relationship, according to the routing address and/or the fragment packet identifier;

    Obtaining the RapidIO device identifier according to the header of the transport network packet and the first mapping relationship;

    Mapping the RapidIO packet of the RapidIO device indicated by the RapidIO device identifier to the transport network packet according to the RapidIO device identifier.
12. A data transmission system comprising:

    The source device is configured to move the data to be transmitted in the source device memory to the RapidIO packet according to the mapping between the source address of the source device and the source device, and convert the RapidIO packet into a transmission network packet, and Sending the transport network message to the destination device;

    The destination device is configured to convert the received transport network packet into a RapidIO packet, and move the RapidIO packet to the memory according to a correspondence between a RapidIO address space and a memory in the destination device. The storage location is specified, where the specified storage location corresponds to the RapidIO address space carried in the RapidIO packet.
13. The system of claim 12, wherein the source device and/or the destination device are further configured to set a mapping relationship between a RapidIO address space and a memory by: defining a message type of the RapidIO packet, where different The message type corresponds to a different memory storage location; and the correspondence between the RapidIO address space and the specified storage location of the memory is set according to the message type of the RapidIO packet.
14. The system according to claim 12, wherein the destination device is further configured to acquire the RapidIO address space information according to a header of the RapidIO packet and a preset mapping relationship, where the mapping relationship is The mapping relationship between the header and the RapidIO address space.
15. A data transmission device comprising:

    a receiving module, configured to receive a transport network packet sent by the source device;

    The mapping module is configured to map the transport network packet to a RapidIO packet according to a preset mapping relationship;

    a transmission module, configured to transmit the RapidIO packet to a specified storage location of the memory according to a correspondence between a RapidIO address space and a storage location of a memory in the destination device, where the specified storage location is carried in the RapidIO packet The RapidIO address space is corresponding.
16. The apparatus according to claim 15, wherein the mapping module is configured to: when the mapping relationship comprises: the first mapping relationship:

    The first obtaining unit is configured to: according to the first fragmented packet or the non-fragmented packet, when the first fragmented packet of the transport network packet or the non-fragmented packet of the transport network packet The header of the packet obtains the RapidIO device identifier according to the first mapping relationship;

    And a mapping unit, configured to map the transport network packet to a RapidIO packet of the RapidIO device indicated by the RapidIO device identifier according to the RapidIO device identifier.
17. The apparatus according to claim 16, wherein the mapping module is configured to: when the mapping relationship further comprises: a second mapping relationship:

    The second obtaining unit is configured to obtain, according to the header of the other packet, the routing address and/or the fragmentation report of the transmission network according to the header of the other packet in the fragmented packet of the transport network packet. Text identification

    a third acquiring unit, configured to acquire, according to the routing address and/or the fragment packet identifier, a header of the transport network packet according to the second mapping relationship;

    a fourth acquiring unit, configured to acquire the RapidIO device identifier according to the header of the transport network packet and the first mapping relationship;

    The mapping unit is further configured to map the transport network packet to a RapidIO packet of the RapidIO device indicated by the RapidIO device identifier according to the RapidIO device identifier.
18. A data transmission device comprising:

    The moving module is configured to move the data to be transmitted in the memory to the RapidIO packet according to the correspondence between the RapidIO address space and the memory in the source device in the RapidIO packet;

    a mapping module, configured to map the RapidIO packet to a transport network packet according to a preset mapping relationship;

    And a transmission module, configured to transmit the transport network message to the destination device.
19. The device according to claim 18, wherein the mapping module is configured to: when the mapping relationship comprises: a first mapping relationship, comprising:

    The first obtaining unit is configured to set, according to the header packet of the RapidIO packet or the non-fragment packet of the RapidIO packet, according to the header of the first fragment packet or the non-fragment packet Obtaining the RapidIO device identifier according to the first mapping relationship;

    The mapping unit is configured to map, according to the RapidIO device identifier, a RapidIO packet of the RapidIO device indicated by the RapidIO device identifier to the transport network packet.
20. The apparatus according to claim 19, wherein the mapping module is configured to: when the mapping relationship comprises: a second mapping relationship, comprising:

    The second obtaining unit is configured to obtain, according to the header of the other packet, the routing address and/or the fragment of the transport network according to the header of the other packet except the first fragment packet in the fragmented packet of the RapidIO packet. Message identifier

    a third acquiring unit, configured to acquire, according to the routing address and/or the fragment packet identifier, a header of the RapidIO packet according to the second mapping relationship;

    a fourth acquiring unit, configured to acquire the foregoing according to the header of the transport network packet and the first mapping relationship RapidIO device identification;

    The mapping unit is further configured to map, according to the RapidIO device identifier, a RapidIO packet of the RapidIO device indicated by the RapidIO device identifier to the transport network packet.

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