CN109857691B - Bus cascadable integrated communication equipment and multichannel time division multiplexing transmission method - Google Patents
Bus cascadable integrated communication equipment and multichannel time division multiplexing transmission method Download PDFInfo
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- CN109857691B CN109857691B CN201910009072.5A CN201910009072A CN109857691B CN 109857691 B CN109857691 B CN 109857691B CN 201910009072 A CN201910009072 A CN 201910009072A CN 109857691 B CN109857691 B CN 109857691B
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Abstract
The embodiment of the invention introduces a bus cascadable integrated communication device and a multi-channel time division multiplexing transmission method. The apparatus comprises: cascade device, cascaded device and connecting portion, cascaded device includes: a functional board card; the main control board card at least controls part of the operation state of the equipment and provides a standard bus control time sequence; the bus comprises a standard part and a cascade part which are connected in a matching mode, the standard part provides a communication link of a standard framework for data interaction related to the functional board card, the cascade part provides a special cascade link between the cascade device and the cascaded device, the standard part of the bus is laid on the back plate, and fixed point positions corresponding to the board card interfaces provide the standard bus framework, so that the functional board card and/or the main control board card connected with the board card interfaces can be connected to the bus through the fixed point positions. The cascaded portion of the bus is laid on the connection.
Description
Technical Field
The present invention relates to communication equipment and method, and is especially one kind of integrated communication equipment with cascaded buses and multichannel time division multiplexing transmission method.
Background
Communication devices are indispensable equipment components in various fields. The communication devices are various in kind and function, and when a communication job is executed once, the communication device is often required to have a plurality of functions at the same time. For example, in a VPX bus architecture, a user can expand the functions of the device by inserting functional boards with different functions into one chassis. However, the board card interface provided by the device is limited, which limits the expansion of the functions. Further, the interfaces of the functional boards are different, and the coordination of the board interface relationship also brings inconvenience to the user.
Therefore, how to expand the functions of the communication device without increasing the size of the communication device and the complexity of the board interface becomes a problem to be solved urgently.
Disclosure of Invention
The technical problem to be solved by the embodiment of the invention is to provide the communication equipment with the integrated bus cascade connection function.
Correspondingly, the embodiment of the invention also provides a multi-channel time division multiplexing transmission method.
In order to solve the above problems, the present invention discloses a bus-cascadable integrated communication device, comprising: a cascade device, a cascaded device, and a connection, the cascaded device comprising:
the function board card at least has one of functions of collecting data, processing data, exchanging data and storing data;
the main control board card at least controls part of the operation state of the equipment, and the main control board card provides a standard bus control time sequence;
the back board is provided with a plurality of board card interfaces, and the functional board card and the master control board card are connected with the back board through the board card interfaces;
the main bus comprises a standard part and a cascade part which are connected in a matching manner, the standard part provides a communication link of a standard architecture for data interaction related to the functional board card, the cascade part provides a special cascade link between the cascade device and the cascaded device, the standard part of the main bus is laid on the backboard, and fixed point positions corresponding to the board card interfaces provide a standard bus architecture, so that the functional board card and/or the main control board card connected with the board card interfaces can be connected to the main bus through the fixed point positions;
the cascade apparatus includes:
the function module at least has one of functions of collecting data, processing data, exchanging data and storing data;
the main control module can receive and analyze a standard bus control time sequence provided by the main control board card and at least control part of the operation state of the cascade device according to the standard bus control time sequence;
the slave bus provides a communication path for data interaction related to the functional module and can interact with the master bus information;
the connecting part is connected with a main bus of the cascaded device and a slave bus of the cascaded device, so that data interaction can be carried out between the main control board card and the main control module, and the cascaded part of the main bus is laid on the connecting part.
Preferably, at least part of the device has a serial communication bus system architecture.
Preferably, the main control board card and the main control module are connected through the cascade part.
Preferably, the cascade portion comprises:
the output signal line is used for transmitting a signal sent to the main control module by the main control board card;
and the input signal line is used for transmitting a signal sent to the main control board card by the main control module.
Preferably, the main control board card and the main control module realize information transmission through a cascade signal; the cascade signal includes:
the junction signal is sent to the main control module by the main control board card;
and the bridging signal is sent to the main control board card by the main control module.
Preferably, at least two of the functional boards are arranged in the same manner as the ports of the board interfaces respectively corresponding to the functional boards.
Preferably, the connection portion comprises an external connector.
Preferably, the number of the functional board cards and the number of the functional modules are both multiple.
Preferably, the apparatus has a VPX architecture.
Preferably, the method is implemented by the device, and comprises the following steps:
the cascaded device generates a tandem signal and sends the bridging signal to the cascaded device;
the cascade device analyzes the tandem signal, obtains a frame signal and a clock signal in the tandem signal, further realizes synchronization with the cascaded device, and the main control module sends the data signal to a corresponding functional module for data processing;
and the cascade device feeds back the data processed by the functional module to the cascaded device through a bridge signal.
Compared with the prior art, the embodiment of the invention has the following advantages:
the bus-cascade integrated communication equipment introduced in the embodiment of the invention can effectively expand the functions of the communication equipment, so that a plurality of independent communication equipment are cascaded into a whole to realize the data processing function together. The technical scheme introduced by the embodiment of the invention can establish connection between buses of different chassis, and the cascading mode has no obvious selectivity to the cascading device and the cascaded device, thereby enlarging the application range of the embodiment of the invention. Furthermore, in the technical solution of the embodiment of the present invention, the cascade device is used as a special functional board card of the cascaded device, and the multi-channel time division multiplexing transmission method introduced in the embodiment of the present invention is used to implement coordination between the cascade device and the cascaded device, thereby increasing the coordination between the device components.
Drawings
FIG. 1 is a schematic diagram of a partial structure of a bus-cascadable integrated communication device according to the present invention;
FIG. 2 is a timing diagram of the STBUS bus of a multi-channel time division multiplexing transmission method of the present invention;
fig. 3 is a schematic diagram of a format of a bridge signal (DATAINX) of a multi-channel time division multiplexing transmission method of the present invention.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in further detail below.
One of the core ideas of the embodiment of the invention is to effectively expand the functions of the communication equipment through the design of the connection relation and the connection mode of the main bus and the slave bus of the cascading device and the cascaded device. And the coordination and unification between the cascade device and the cascaded device are realized through the design of the cascade signal.
Therefore, an embodiment of the present invention introduces a communication device with integrated bus cascadable, including: the cascade device comprises a cascade device, a cascaded device and a connecting part, wherein the cascaded device comprises a functional board card, a main control board card, a back board and a main bus which are matched. The connection relationship between the cascading device and the cascaded device is controlled by a user. When the cascade device and the cascaded device are connected into a whole, the cascade device and the cascaded device can jointly play the functions of data processing and data interaction, and can be regarded as a whole. When the two function together to perform the information processing function, the cascade device can be regarded as a functional board card of the cascade device.
The function board card at least has one of functions of collecting data, processing data, exchanging data and storing data, and can independently complete data processing to a certain degree. The functional board card is provided with an interface, and the interface is used for being connected with other components and further realizing data transmission with the other components.
The main control board card at least controls part of the operation state of the equipment, and the main control board card provides a standard bus control time sequence;
the back board is provided with a plurality of board card interfaces, and the functional board card and the master control board card are connected with the back board through the board card interfaces; the function board card can be connected with the backboard through the board card interface. When the interface of the functional board card is connected with the board card interface on the backboard, the functional board card is connected with the backboard. Preferably, the functional board card and the board card interface are in a one-to-one correspondence relationship. The standard part of the main bus is laid on the back plate, and the cascade part of the main bus is laid on the connecting part.
The main bus comprises a standard part and a cascade part, the standard part provides a communication link of a standard architecture for data interaction related to the functional board card, the cascade part provides a special cascade link between the cascade device and the cascaded device, the standard part of the main bus is laid on the backboard, and fixed point positions corresponding to the board card interfaces provide a standard bus architecture, so that the functional board card and/or the main control board card connected with the board card interfaces can be connected to the main bus through the fixed point positions;
the cascade device in the embodiment of the invention comprises: the device comprises a function module, a master control module and a slave bus.
The functional module at least has one of functions of collecting data, processing data, exchanging data and storing data, and is the same as the functional board card, and the functional board card are distinguished by taking different names due to different use scenes.
And the master control module can receive and analyze a standard bus control time sequence provided by the master control board card and control at least part of the operation condition of the cascade device according to the standard bus control time sequence. The main control module at least coordinates and manages the working condition of each functional module and the coordination relationship between the cascade device and the cascaded device.
And the slave bus provides a communication path for data interaction related to the functional module and can interact with the master bus information. The slave bus can have the same structure and data transmission capability as the standard part of the master bus, and the names are distinguished due to different use scenes.
Furthermore, a connecting part is connected with a main bus of the cascaded device and a slave bus of the cascaded device, so that data interaction can be performed between the main control board card and the main control module, and the cascaded part of the main bus is laid on the connecting part. When the connection relationship between the cascade device and the cascaded device is established, the connection relationship between the standard part and the cascade part can be kept unchanged, and the on-off between the cascade part and the cascade device is controlled, namely the main control board card and the main control module are detachably connected through the cascade part.
Further, the cascade part of the integrated communication device introduced in the embodiment of the present invention includes: an output signal line and an input signal line. The output signal line and the input signal line can be respectively connected with the main control module and the main control board card, and information interaction between the main control module and the main control board card is realized. The output signal line is used for transmitting signals sent by the main control board card to the main control module, and the input signal line is used for transmitting signals sent by the main control module to the main control board card.
The cascade signal is used for realizing frame synchronization, clock synchronization and data transfer between the cascaded device and the cascade device.
Fig. 1 is a schematic diagram of a partial structure of a device when the technical solution in the embodiment of the present invention is applied to a serial communication bus system (STBUS) architecture. The main control board 23 serves as a master device to provide a standard bus control timing sequence for the local function board. The main control module 13 is used for controlling part of the operation conditions of the cascade device.
Preferably, in the bus-cascadable integrated communication device in one embodiment of the present invention, the point definitions of the CLK signal, the FS signal, and the DATAOUT signal corresponding to the interfaces of the functional boards of the cascaded device are the same, so that the arrangement methods of the interface positions of the functional boards corresponding to the board interface positions corresponding to the links of the three types of information are the same. Similarly, the point positions of the corresponding CLK signal, FS signal and DATAOUT signal at the board interface of the backplane are defined the same. In the embodiment of the present invention, the positions of the other functional boards, except the intranet exchange board and the extranet exchange board, in each functional board can be interchanged at will, and the functional boards are connected to any idle board interfaces on the backplane. And all the functional boards connected to the same backplane share the CLK signal, the FS signal and the DATAOUT signal.
Likewise, the connections between the functional modules of the cascading device and the bus preferably also employ the link correspondence of the cascaded device.
Under a serial communication bus system (STBUS) architecture, the connection may be an external connector.
The invention further introduces a multi-channel time division multiplexing transmission method, which comprises a frame synchronization method, wherein the frame synchronization method comprises the following steps:
s100: the cascaded device generates a tandem signal and sends the tandem signal to the cascaded device.
In an embodiment of the present invention, the DATAIN signal of the functional module is processed to form a bridge signal (DATAINX), and the processing step is performed by the main control module. The structure of the bridge signal (DATAINX) is shown in fig. 3.
In a preferred embodiment of the present invention, the bus timing of the main bus is as shown in FIG. 2. Self-defining STBUS bus rate of 8.192Mbps, frame rate of 8k, 128 time slots per frame, transmitting 8-bit DATA IN each time slot, sending DATA to a main control module by a signal DATA _ IN 1-DATA _ IN13 for a function board module, placing an ID number of a function board card IN the 0 th time slot, and placing a DATA signal needing to be transmitted from the 1 st time slot. The main control board card firstly stores the DATAIN signals of each functional board card into the FIFO, then searches the time slot corresponding to the ID of the functional board card in a time slot mapping table, then places the DATA in the FIFO onto a DATA _ OUT DATA bus (output signal line) according to the corresponding time slot, and for a bridge signal (DATAINX), the main control board card needs to treat the bridge signal as a special DATAIN signal.
Further, in a preferred embodiment of the present invention, a DATA _ OUT signal (a signal transmitted by the functional board to the master board) of the cascaded device is transmitted to the cascaded device as a tandem signal, and the master board of the cascaded device writes synchronous DATA, for example, the synchronous DATA is fixed byte DATA AA, in 126 time slots of the DATA _ OUT signal. And then the main control board card transmits the tandem signal to a cascade device.
Preferably, the device according to the embodiment of the present invention selects a clock with 6 times the frequency of the STBUS clock signal.
S200: the master control module in the cascade device analyzes the tandem signal, obtains a frame signal (FS signal) and a clock signal (CLK signal) in the tandem signal, places the frame signal and the clock signal on a frame signal line and a clock signal line of the cascade device, and directly places a tandem signal (DATA _ OUT) on a slave bus, so that the functional modules of the cascade device and the cascaded device are synchronized, the master control module sends the DATA signal to the corresponding functional modules for DATA processing, and the bus timing sequence of the frame signal (FS signal), the clock signal (CLK signal), the tandem signal (DATA _ OUT) on the slave bus and the DATA in signal of the functional modules is shown in fig. 2.
Part of functions of the tandem signal in the embodiment of the invention are used for realizing frame synchronization and clock synchronization between the cascaded device and the cascading device. When frame synchronization is not completed between the cascaded device and the cascaded device, the cascaded device searches synchronous data from the cascaded information, marks a time slot of a found byte AA as 126 time slots, judges that frame synchronization is completed if the byte AA is captured in the same time slot in 3 continuous bus clock cycles, and recovers a clock signal and a frame signal according to the byte AA to realize synchronization between the cascaded device and the cascaded device.
S300: and the cascade device feeds back the data processed by the functional module to the cascaded device.
Further, in the multi-channel time division multiplexing transmission method in the embodiment of the present invention, when the cascade connection between the cascaded device and the cascaded device is successful and is in synchronization, if no AA is detected in 126 timeslots for 5 consecutive times, it is determined that the frame of the cascaded device is out of synchronization, and frame synchronization needs to be performed again.
Through the steps, the cascaded device and the cascading device complete the cascading function of the self-defined STBUS through the two signal lines, the interconnection and intercommunication of all the functional board cards are realized, and the transmission is different from the STBUS transmission of standard 4 signal lines.
It should be noted that, for simplicity of description, the method embodiments are described as a series of acts or combination of acts, but those skilled in the art will recognize that the present invention is not limited by the illustrated order of acts, as some steps may occur in other orders or concurrently in accordance with the embodiments of the present invention. Further, those skilled in the art will appreciate that the embodiments described in the specification are presently preferred and that no particular act is required to implement the invention.
For the system embodiment, since it is basically similar to the method embodiment, the description is simple, and for the relevant points, refer to the partial description of the method embodiment.
The embodiments in the present specification are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.
It is further noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
The method for manufacturing a shelter and the system of the shelter provided by the invention are described in detail, and the principle and the implementation mode of the invention are explained by applying specific examples, and the description of the examples is only used for helping to understand the method and the core idea of the invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present invention.
Claims (8)
1. A bus-cascadable unified communications device, comprising: a cascade device, a cascaded device and a connecting part,
the device is in a serial communication bus system architecture;
the cascaded apparatus comprises:
the function board card at least has one of functions of collecting data, processing data, exchanging data and storing data;
the main control board card at least controls part of the operation state of the equipment, and the main control board card provides a standard bus control time sequence;
the back board is provided with a plurality of board card interfaces, and the functional board card and the master control board card are connected with the back board through the board card interfaces;
the main bus comprises a standard part and a cascade part which are connected in a matching manner, the standard part provides a communication link of a standard architecture for data interaction related to the functional board card, the cascade part provides a special cascade link between the cascade device and the cascaded device, the standard part of the main bus is laid on the backboard, and fixed point positions corresponding to the board card interfaces provide a standard bus architecture, so that the functional board card and/or the main control board card connected with the board card interfaces can be connected to the main bus through the fixed point positions; the cascade apparatus includes:
the function module at least has one of functions of collecting data, processing data, exchanging data and storing data;
the main control module can receive and analyze a standard bus control time sequence provided by the main control board card and at least control part of the operation state of the cascade device according to the standard bus control time sequence;
the slave bus provides a communication path for data interaction related to the functional module and can interact with the master bus information;
the number of the functional board cards and the number of the functional modules are multiple;
the connecting part is connected with a main bus of the cascaded device and a slave bus of the cascaded device, so that data interaction can be carried out between the main control board card and the main control module, and the cascaded part of the main bus is laid on the connecting part;
when a connection relation is established between the cascade device and the cascaded device, the connection relation between the standard part and the cascade part is kept unchanged, and the connection and disconnection between the cascade part and the cascade device are controlled;
through the connection of the main bus and the auxiliary bus, the functions of the cascade device and the cascaded device can be effectively expanded.
2. The device of claim 1, wherein the master board card and the master module are connected by the cascading section.
3. The apparatus of claim 1, wherein the cascade portion comprises:
the output signal line is used for transmitting a signal sent to the main control module by the main control board card;
and the input signal line is used for transmitting a signal sent to the main control board card by the main control module.
4. The device of claim 3, wherein the master control board card and the master control module implement information transfer via a cascade signal; the cascade signal includes:
the junction signal is sent to the main control module by the main control board card;
and the bridging signal is sent to the main control board card by the main control module.
5. The apparatus of claim 3, wherein at least two of the functional boards are arranged in the same manner as their respective ports corresponding to the board interface.
6. The apparatus of claim 3, wherein the connection portion comprises an external connector.
7. The apparatus of claim 1, wherein the apparatus has a VPX architecture.
8. A method of multichannel time division multiplex transmission, characterised in that it is implemented using the device of any one of claims 1 to 7, said method comprising the steps of:
the cascade device firstly stores DATAIN signals of each functional board card into an FIFO (first in first OUT), then searches a time slot corresponding to the ID of the functional board card in a time slot mapping table, and then the main control board card places DATA in the FIFO onto a DATA _ OUT DATA bus according to the corresponding time slot to generate a tandem signal and sends the tandem signal to the cascade device;
the cascade device analyzes the tandem signal, obtains a frame signal and a clock signal in the tandem signal, further realizes synchronization with the cascaded device, and the main control module sends the data signal to a corresponding functional module for data processing;
and the cascade device feeds back the data processed by the functional module to the cascaded device through a bridge signal.
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| CN100384169C (en) * | 2005-10-19 | 2008-04-23 | 华为技术有限公司 | Master and slave frame cascade system in cut-in device |
| CN1921476A (en) * | 2006-08-21 | 2007-02-28 | 华为技术有限公司 | Business cascade method and system applied between narrow-band communication equipments |
| CN100574240C (en) * | 2007-04-30 | 2009-12-23 | 华为技术有限公司 | Access device and principal and subordinate's frame communication means thereof based on industry ethernet |
| CN101764662A (en) * | 2008-12-26 | 2010-06-30 | 中兴通讯股份有限公司 | Method, system and device for multi-loading demultiplexing and multiplexing |
| CN103312539B (en) * | 2013-05-20 | 2016-09-28 | 华为技术有限公司 | Master and slave frame cascade system in access device |
| CN106161870B (en) * | 2015-04-10 | 2019-09-13 | 杭州海康威视数字技术股份有限公司 | A kind of multi-screen control equipment and synchronization system |
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