CN105634896A - Single-host polycyclic MOST network communication system - Google Patents
Single-host polycyclic MOST network communication system Download PDFInfo
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- 238000004891 communication Methods 0.000 title claims abstract description 192
- 125000003367 polycyclic group Chemical group 0.000 title abstract 3
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- 230000002093 peripheral effect Effects 0.000 claims description 28
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Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
- H04L12/40—Bus networks
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
- H04L12/42—Loop networks
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/01—Protocols
- H04L67/12—Protocols specially adapted for proprietary or special-purpose networking environments, e.g. medical networks, sensor networks, networks in vehicles or remote metering networks
Abstract
The invention discloses a single-host polycyclic MOST network communication system, comprising: a host and multiple groups of MOST ring networks connected to the host in parallel, wherein each group of MOST ring networks comprises a TCP/IP channel and a plurality of communication nodes; and each communication node respectively carries out TCP/IP data transmission with the host through the MOST ring network where the communication node is located and realizes the data communication and transmission with the internet through an external network connection interface on the host. By adopting the single-host polycyclic MOST network communication system disclosed by the invention, the number of the communication nodes of the MOST ring networks connected to the host is effectively expanded, the communication carrying capacity of the single host is improved in the manner of a relatively low construction cost, the data communication and transmission among the plurality of communication nodes and between the communication nodes and the internet are realized, and independent multimedia on demand requests sent by receiving end nodes can be further received to meet the development demand of vehicular entertainment.
Description
Technical field
The present invention relates to vehicle-carrying communication networking technology area, particularly relate to a kind of multi-ring MOST network communicating system of single host.
Background technology
MOST (MediaOrientedSystemsTransport, media guidance system transfers) network is as a kind of vehicle mounted multimedia network transmission technology, the data that responsible on-vehicle information is entertained with telematics device are transmitted, and currently mainly transmit the information of recreation data with ring topology.
Fig. 1 is MOST network architecture block diagram common in existing vehicle entertainment system. In the multinode application case shown in Fig. 1, based on MOST standard, a MOST network rings can be connected at most 64 communication nodes, and each peripheral communications node installation, in the vehicles of carrying, chooses, for the user on each seat, the entertainment liked. Wherein, the fundamental unit of vehicle-mounted MOST loop network is node. Node is that an independence can communicate, the logic unit of bi-directional transfer of data. Connect between node with node and become a MOST looped network closed. Wherein, the node being arranged on main frame is a special node, this node in whole MOST network system as the platform collecting, integrating, provide all information. Different entertainment information is first collected by main frame, according to the requirement of other nodes relevant information is packaged into MOST data form, then converts thereof into digital signal and transmit on corresponding transmission medium, it is possible to be numbered " 0 "; Other nodes are peripheral communications node (numbering span be more than or equal to 1, less than or equal to 63), are a kind of receiving terminals possessing man machine interface; User passes through receiving terminal, proposes relevant information requirement to main frame, and by extracting over a transmission medium and by the information deblocking of MOST data form, exporting the display at receiving terminal.
When newly-increased or reduce node, main frame can distribute receiving terminal node address/numbering on MOST network automatically in order, to identify each information requirement is from which platform receiving terminal. MOST looped network support transmits entertainment information different in a large number, to support that the node of different receiving terminal can propose different entertainment information in the same time. The total bandwidth of standard MOST looped network is 150Mbps, the maximum nodes supported is 64, the available bandwidth that then each receiving terminal node is minimum is that 150/64Mbps is (actual in there is synchronizing signal, bandwidth slightly reduces), such bandwidth can meet user and media show the requirement of image quality.
But, at present in a lot of application scenarios, such as double-decker bus, train, high ferro, steamer and on aircraft, the required receiving terminal node number supported or peripheral communications node all exceed well over 64, therefore, expand the communication node that individual host is supported, be a technical barrier must captured based on existing MOST standard.
Summary of the invention
The technical problem to be solved is, a kind of multi-ring MOST network communicating system of single host is provided, realizing individual host can two or more MOST looped network in parallel, to expand the communication node quantity that individual host connects, improve the bearing capacity of single host and save system constructions cost.
For solving above technical problem, the embodiment of the present invention provides a kind of multi-ring MOST network communicating system of single host, including: main frame, and many groups MOST looped network that parallel connection is on the host; Often group MOST looped network includes a TCP/IP passage and multiple communication node;
Each described communication node carries out TCP/IP data transmission respectively through MOST looped network and the described main frame at its place, via the external network connection interface on described main frame, it is achieved data communication with the Internet and transmission.
Preferably, described main frame sets up the IP outbound communication network segment by Ethernet card and/or wireless communication module, it is achieved be connected with internet communication.
Further, each described communication node being respectively equipped with an independent Intranet IP, the communication network segment at described Intranet IP place and the described IP outbound communication network segment distinguish; Each described communication node, for carrying out routing addressing by described Intranet IP, sends data to described main frame, or, receive the data coming from described main frame; Data after processing, after the data received from Intranet IP are processed, via the described IP outbound communication network segment, are uploaded to the Internet by described main frame; Or, for receiving the downlink data obtained from the Internet via the described IP outbound communication network segment, and map on Intranet IP after being processed described downlink data processing, with the communication node in transmission to the MOST looped network corresponding with described Intranet IP.
Preferably, described main frame is additionally provided with TCP/IP forwarding module, for the transmission data on main frame are carried out address conversion: the Intranet IP at upstream data place is converted to the outer net IP being connected with internet communication; Or, the outer net IP at downlink data place, the Internet is converted to the Intranet IP being connected with MOST looped network communication node.
Further, described main frame is additionally operable to the data of the different communication node between different MOST looped networks are forwarded, it is achieved overstate that the data of the network segment send and receive.
Further, often group MOST looped network includes initial communication node and peripheral communications node respectively; Each described peripheral communications node is connected with described host hardware by the MOST network physical interface on described initial communication node; Described initial communication node is provided with intelligent network interface and controls module; Often the peripheral communications node on group MOST looped network is communicatively coupled by MLB bus or usb bus and described intelligent network interface control module after being connected with described host hardware.
In a kind of attainable mode, often the multiple communication nodes on group MOST looped network adopt optical fiber, are sequentially connected with in order from described initial communication node, form MOST closed-loop network; It is one or more that each peripheral communications node is provided with MOST network physical interface, intelligent network interface controls in module, display screen, audio output device, touch interactive device, MLB bus or usb bus.
Further, described main frame is provided with software application platform; Described software application platform includes controller, and, multiple for supporting communication protocol and the driver transmitted with external devices data; Described for supporting to include TCP/IP internet communication protocol stack, udp protocol and Transmission Control Protocol with the communication protocol of external devices data transmission; Described driver includes independent usb driver, MLB driver, NAPI driver, ISOC driver and controls driver; Wherein, described controller is for producing the control information controlling passage that the intelligent network interface in each group of MOST looped network controls between module; Described control driver, for starting the properly functioning of described controller; Described NAPI driver is for driving the operation of Ethernet card; Described ISOC driver is for driving the transmission of the TS code stream in described main frame.
Yet further, described software application platform, for being started the application service on described main frame by software initialization, including: judge often whether group MOST looped network is closed-loop network; MAC Address is distributed to the communication node on each group of MOST looped network when MOST looped network is closed-loop network often organizing; Detect whether each communication node all obtains MAC Address; If so, host record all communication nodes information and the various application services started on each group of MOST looped network are then started; If it is not, then point out error message by main frame.
Preferably, each communication node often organizing MOST looped network is additionally operable to send multimedia request to described main frame independently; Described main frame is additionally operable to ask according to described multimedia, result will be performed according to described TCP/IP internet communication protocol stack, udp protocol, Transmission Control Protocol, sent to corresponding communication node by NAPI driver, and by described ISOC driver, multi-medium data is transmitted to corresponding communication node in TS code stream mode.
The multi-ring MOST network communicating system of single host that the embodiment of the present invention provides, by the TCP/IP channel allocation often organizing MOST looped network is arranged, realize on main frame group MOST looped networks much more in parallel and realize the data transmission of communication node on each group of MOST looped network, and, forwarded by the data of described main frame and address conversion, it is achieved the data communication of each communication node and the Internet and transmission. After carrying out network expansion, the communication node quantity that individual host is supported is unrestricted in theory, and during practical application, the performance (hardware and software configuration) according to main frame determines; Further, multimedia (such as film, music, MTV etc.) file leaves on main frame, to support the independent program request needs of each peripheral communications node or receiving terminal node; Each communication node is separate, and owing to being designed according to MOST standard, the average bandwidth of each communication node is not less than 150/64Mbps, meets user's display image quality demand to vehicle mounted multimedia. Technical scheme provided by the invention, can effectively expand the quantity of the MOST looped network communication node that individual host connects, the communication carrier ability of individual host is promoted in the way of relatively low constructions cost, realize the data communication and transmission between multiple communication node and between each communication node and the Internet, and the independent multimedia order request that user is sent by each receiving terminal node can be received further, meet the development need of car entertainment.
Accompanying drawing explanation
Fig. 1 is MOST network architecture block diagram common in existing vehicle entertainment system.
Fig. 2 is the topological structure schematic diagram of an embodiment of the multi-ring MOST network communicating system of single host provided by the invention.
Fig. 3 is the internal structure schematic diagram of a kind of embodiment of initial communication node provided by the invention.
Fig. 4 is the internal structure schematic diagram of a kind of embodiment of peripheral communications node provided by the invention.
Fig. 5 is the configuration diagram of an embodiment of the MOST software architecture of main frame provided by the invention.
Fig. 6 is the configuration diagram of an embodiment of the MOST software architecture of communication node provided by the invention.
Fig. 7 is the software initialization schematic flow sheet of the multi-ring MOST looped network of single host provided by the invention.
Detailed description of the invention
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described. Obviously, described embodiment is only a part of embodiment of the present invention, rather than whole embodiments. Based on the embodiment in the present invention, the every other embodiment that those of ordinary skill in the art obtain under not making creative work premise, belong to the scope of protection of the invention.
Referring to Fig. 2, it it is the topological structure schematic diagram of an embodiment of the multi-ring MOST network communicating system of single host provided by the invention.
In the present embodiment, described single host multi-ring MOST network communicating system, including main frame 100, and it is connected in parallel on many groups MOST looped network on described main frame 100 (1��N, N >=2); Often group MOST looped network includes a TCP/IP passage and multiple communication node (1��M, 1��M��64). Individual host can two or more MOST closed ring networks in parallel, each MOST looped network all meets MOST standard, supports maximum 64 nodes, each MOST looped network the highest support 150Mbps bandwidth. After network is expanded, it will be unlimited (the actual hardware and software performance being limited by main frame 100) that the communication section that the MOST network communicating system that the present embodiment provides can be supported in theory is counted, meanwhile, the average bandwidth of the communication node (being also called receiving terminal node) of each MOST looped network is not less than 150/64Mbps.
Each described communication node carries out TCP/IP data transmission respectively through MOST looped network and the described main frame 100 at its place, via the external network connection interface of described main frame 100, it is achieved data communication with the Internet and transmission. Each MOST looped network all comprises a TCP/IP passage, and each communication node comprises independent IP (InternetProtocol, procotol) address; Each communication node carries out TCP/IP data forwarding through main frame 100 after arriving main frame 100 by the MOST looped network at its place. TCP/IP (TransmissionControlProtocol/InternetProtocol) is translated into again internet communication protocol stack (Stack), it is as a network communication models, comprise whole network transmission protocol race, be the Base communication framework of the Internet.
In the present embodiment, described main frame logical 100 Ethernet card and/or wireless communication module 101 excessively sets up the IP outbound communication network segment, it is achieved be connected with internet communication.
Ethernet card or wireless communication module 101 are the hardware devices for connecting the Internet on main frame 100. Wherein, Ethernet card includes hundred Broadcoms, PCI-Express etc., and wireless communication module comprises the functional module such as 2G (Generation Mobile Telecommunication System), 3G (3G (Third Generation) Moblie), 4G (forth generation mobile communication) communication module. IP_X is the dynamic IP distributed by ISP, and generally common form is 192.168.x.y or 10.10.x.y etc. Wherein the span of x is greater than waiting 0, and less than or equal to 254, and the span of y is greater than waiting 2, less than or equal to 254. Ethernet card and wireless communication module the two can select one, or coexist in main frame 100.
When being embodied as, each described communication node being respectively equipped with an independent Intranet IP, the communication network segment at described Intranet IP place and the described IP outbound communication network segment distinguish. As shown in Figure 2, it is possible to the routing address of the IP outbound communication network segment is labeled as IP_X, the Intranet IP of each communication node of first MOST looped network is labeled as IP_1_1��IP_1_63; And so on, the Intranet IP of each communication node of n-th MOST looped network is labeled as IP_N_1��IP_N_63; Wherein, parameter N and the X in IP_N and IP_X can as the mark of the network segment different, to distinguish IP address of internal network and outer net IP address.
Such as, for MOST looped network 1: in a kind of attainable mode, the IP_1 address of node 0 could be arranged to 10.0.1.1, the IP_1_1 address of node 1 can be 10.0.1.101, the IP_1_2 address of node 2 can be 10.0.1.102, and so on, the IP address of node 63 may be configured as 10.0.1.163; In another kind of attainable mode, the IP_1 address of node 0 can also be 192.168.1.1, the IP_1_1 address of node 1 can be 192.168.1.101, and the IP_1_2 address of node 2 can be 192.168.1.102, and the IP address of node 63 is set to 192.168.1.163.
In like manner, MOST looped network N node IP address may is that, in a kind of attainable mode, the IP address of node 0 can be 10.0.N.1; The IP_1_1 of node 1 can be 10.0.N.101, and the IP_1_2 of node 2 can be 10.0.N.102, and the IP address of node 63 is 10.0.N.163; In another kind of attainable mode, the IP_1 of node 0 can also be 192.168.N.1, and the IP_1_1 of node 1 can be 192.168.N.101, and the IP_1_2 of node 2 can be 192.168.N.102, and the IP address of node 63 is 192.168.N.163. When being embodied as, the value of MOST looped network quantity N is more than or equal to 1, and less than or equal to 254, in practical application, the value of N is by limited, and numerical values recited is determined by the hardware and software ability of main frame 100.
Each described communication node, for carrying out routing addressing by described Intranet IP, sends data to described main frame 100, or, receive the data coming from described main frame 100;
Data after processing, after the data received from Intranet IP are processed, via the described IP outbound communication network segment, are uploaded to the Internet by described main frame 100; Or, for receiving the downlink data obtained from the Internet via the described IP outbound communication network segment, and map on corresponding Intranet IP after being processed described downlink data processing, with the communication node in transmission to corresponding MOST looped network.
In the present embodiment, described main frame 100 is additionally provided with TCP/IP forwarding module 102, for the transmission data on main frame 100 are carried out address conversion: the Intranet IP at upstream data place is converted to the outer net IP being connected with internet communication; Or, the outer net IP at downlink data place, the Internet is converted to the Intranet IP being connected with MOST looped network communication node. TCP/IP forwarding module 102 on main frame 100 can utilize routing hardware chip or the Routing Software based on operating system to realize, its effect is to be processed the data of Intranet IP_N address processing, it is up in outer net IP_X address, thus transmitting data to the Internet; When data downstream in the Internet is to TCP/IP forwarding module 102, TCP/IP forwarding module 102 transfers it to be distributed to corresponding communication node in Intranet IP_N after data and address are processed process.
Described main frame 100 is additionally operable to the data of the different communication node between different MOST looped networks are forwarded, it is achieved overstate that the data of the network segment send and receive. Forwarding through main frame 100, it may be achieved the internodal communication of difference between different MOST looped networks. Such as, the communication node 1 in MOST looped network 1 and the node 63 in MOST looped network N (N value is more than 1), by the forwarding of main frame 100, it is achieved overstate that the information of the network segment sends and receives.
Often group MOST looped network includes initial communication node (node 0) and peripheral communications node (node 1��63) respectively; Each described peripheral communications node is connected with described main frame 100 hardware by the MOST network physical interface on described initial communication node; Described initial communication node is provided with intelligent network interface and controls module (IntelligentNetworkInterfaceCard is called for short INIC); Often the peripheral communications node on group MOST looped network is communicatively coupled with described intelligent network interface control module I NIC by MLB (MediaLocalBus, multimedia local bus) bus or USB (UniversalSerialBus) bus after being connected with described host hardware.
Wherein, MLB bus is a kind of multimedia local bus, it is possible to as the vehicle bus of quick transmitted in both directions. Usb bus is the universal serial bus being prone to use, transmitted in both directions with low cost, quick comparatively conventional at present. Main frame 100 is provided with independent MLB bus and usb driver, to support the parallel connection of multiple MOST looped network. And for peripheral communications node (receiving terminal node), if it utilizes MLB to drive and carries out data transmission, then usb driver will not be used; If it uses usb driver, then will not use MLB bus, when practice, utilize one of both to carry out data transmission.
Intelligent network interface controls module can be integrated into INIC chip, such as the electronic chip that Microchip company produces, the conventional intelligent network interface controller (IntelligentNetworkInterfaceController) having the models such as OS81118, OS81110.
Often the multiple communication nodes on group MOST looped network adopt optical fiber, are sequentially connected with in order (series connection) from described initial communication node, form MOST closed-loop network; It is one or more that each peripheral communications node is provided with MOST network physical interface, intelligent network interface controls in module I NIC, display screen, audio output device, touch interactive device, MLB bus or usb bus. When being embodied as, the initial communication node (i.e. node 0) often organizing MOST looped network is arranged on host 100, communicates to connect with the TCP/IP forwarding module 102 on main frame 100.
Referring to Fig. 3, it it is the internal structure schematic diagram of a kind of embodiment of initial communication node provided by the invention; Referring to Fig. 4, it it is the internal structure schematic diagram of a kind of embodiment of peripheral communications node provided by the invention.
For often organizing the initial communication node (node 0) of MOST looped network, it all can adopt structure composition as shown in Figure 3; In like manner, for often organizing the peripheral communications node (node 1��63) of MOST looped network, it all can adopt structure composition as shown in Figure 4. Wherein, MOST network physical interface can adopt optical fiber to be attached, including two paths: a road is outfan, and another road is input. Display screen is arranged on peripheral communications node, and by being arranged on mobile unit, user can watch the media video signal (film, MTV etc.) in MOST network. Audio output device is the device of the media n audio signal (film, MTV, music etc.) listening in MOST network for user. Additionally, user can carry out MOST network media control (playing, time-out etc.) alternately with each communication node by touching interactive device.
The hardware of one group of concrete MOST looped network is connected as: each MLB bus or usb bus on main frame 100 connect INIC chip; INIC chip is connected to the MOST network physical interface on main frame 100; The output of the MOST network physical interface of the node 0 on main frame 100 is connected to the input of the MOST network physical interface of peripheral communications node 1; The outfan of the MOST network physical interface of peripheral communications node 1 is connected to the MOST network physical interface input of node 2; According to peripheral communications node M-1, (M takes numerical range and is greater than or equal to 1, less than or equal to 63) MOST network physical interface outfan be connected to the MOST network physical interface input of peripheral communications node M (M takes numerical range and is greater than or equal to 1, less than or equal to 63); The MOST network physical interface outfan of last peripheral communications node M (M takes numerical range and is greater than or equal to 1, less than or equal to 63) is connected to the MOST network physical interface input of node 0 on main frame 100. So thus constitute a MOST closed-loop network.
TCP/IP forwarding module is integrated into router chip, for when the different communication node in MOST looped network needs to access the Internet based on ICP/IP protocol, main frame 100 is by its forward process IP data, this router chip can process IP data by fast-forwarding, can also carrying out IP data transmission disposal by software application platform based on different operating system, this chip can be substituted by software.
Further, described main frame 100 is provided with software application platform; Described software application platform includes controller CONTROL, and, multiple for supporting communication protocol and the driver transmitted with external devices data. Wherein, described for supporting to include TCP/IP internet communication protocol stack, UDP (UserDatagramProtocol with the communication protocol of external devices data transmission, UDP) agreement and TCP (TransmissionControlProtocol, transmission control protocol) agreement; Described driver includes independent usb driver, MLB driver, NAPI (NewApplicationProgrammingInterface, new application programming interfaces) driver, ISOC driver (the INIC chip in MOST network is as the driving module of transmission TS) and controls driver; Wherein, described controller is for producing the control information controlling passage that the intelligent network interface in each group of MOST looped network controls between module; Described control driver, for starting the properly functioning of described controller; Described NAPI driver is for driving the operation of Ethernet card; Described ISOC driver is for driving the transmission of TS (TransportStream, the transmission code stream) code stream in described main frame 100.
Referring to Fig. 5, it it is the configuration diagram of an embodiment of the MOST software architecture of main frame provided by the invention. Referring to Fig. 6, it it is the configuration diagram of an embodiment of the MOST software architecture of communication node provided by the invention.
The system that the present embodiment provides is starting the various different application program of MOST looped network, is exemplified below:
A., when the communication node in same group or the different MOST looped network organized carries out application protocol communication, the NAPI driving in Fig. 5, Fig. 6, ICP/IP protocol, Transmission Control Protocol and/or udp protocol is used to communicate.
B., when communication node accesses the Internet by main frame 100, the NAPI driving in Fig. 5, Fig. 6, ICP/IP protocol, Transmission Control Protocol and/or udp protocol is used to communicate.
C. peripheral communications node (receiving terminal node) uses Fig. 5, NAPI in Fig. 6 drives, ICP/IP protocol, Transmission Control Protocol and/or udp protocol will specifically control broadcast information (as play, suspend, repeat playing, upper one is first, next instruction such as grade) it is sent to main frame 100, the result of execution is passed through Fig. 5 by main frame 100, NAPI in Fig. 6 drives, ICP/IP protocol, Transmission Control Protocol and/or udp protocol are sent to the communication node of correspondence, the media data that communication node is specified by main frame 100 simultaneously passes through Fig. 5, ISOC in Fig. 6 drives and sends communication node to, communication node passes through Fig. 5, ISOC in Fig. 6 drives and receives TS stream, user it is shown to exactly after being decoded.
Referring to Fig. 7, it it is the software initialization schematic flow sheet of the multi-ring MOST looped network of single host provided by the invention.
The described software application platform that the present embodiment provides, for starting the application service on described main frame 100 by software initialization. As it is shown in fig. 7, its concrete function includes:
Step S701: host-initiated judges often whether group MOST looped network is closed-loop network;
Step S702: specifically judge whether each group of MOST looped network is closed-loop network, if so, performs step S703; If it is not, then point out error message by main frame 100, and return step S701;
Step S703: distribute MAC Address to the communication node on each group of MOST looped network when MOST looped network is closed-loop network often organizing;
Step S704: detect whether each communication node all obtains MAC Address; If so, step S704 is then performed; If it is not, then point out error message by main frame 100.
Step S705: start main frame 100 and record all communication node information and the various application services started on each group of MOST looped network.
MAC (MediaAccessControl, medium access control) address is the physical address of Ethernet card in ICP/IP protocol, and the MAC Address of current standard is 6 bytes, such as: 02:00:00:00:01:01. The controller in Fig. 5, Fig. 6 is used to drive (CONTROLDriver), controller (CONTROL) to test, it is possible to determine that often whether group MOST looped network is closed and whether each communication node obtains MAC Address.
In the present embodiment, each communication node often organizing MOST looped network is additionally operable to send multimedia request to described main frame 100 independently; Described main frame 100 is additionally operable to ask according to described multimedia, result will be performed according to described TCP/IP internet communication protocol stack, udp protocol, Transmission Control Protocol, sent to corresponding communication node by NAPI driver, and by described ISOC driver, multi-medium data is transmitted to corresponding communication node in TS code stream mode.
The multi-ring MOST network communicating system of single host that the embodiment of the present invention provides, by the TCP/IP channel allocation often organizing MOST looped network is arranged, realize on main frame group MOST looped networks much more in parallel and realize the data transmission of communication node on each group of MOST looped network, and, forwarded by the data of described main frame and address conversion, it is achieved the data communication of each communication node and the Internet and transmission. After carrying out network expansion, the communication node quantity that individual host is supported is unrestricted in theory, and during practical application, the performance (hardware and software configuration) according to main frame determines; Further, multimedia (such as film, music, MTV etc.) file leaves on main frame, to support the independent program request needs of each peripheral communications node or receiving terminal node; Each communication node is separate, and owing to being designed according to MOST standard, the average bandwidth of each communication node is not less than 150/64Mbps, meets user's display image quality demand to vehicle mounted multimedia. Technical scheme provided by the invention, can effectively expand the quantity of the MOST looped network communication node that individual host connects, the communication carrier ability of individual host is promoted in the way of relatively low constructions cost, realize the data communication and transmission between multiple communication node and between each communication node and the Internet, and the independent multimedia order request that user is sent by each receiving terminal node can be received further, meet the development need of car entertainment.
It should be noted that above-mentioned upgrade-system and functional unit (module) thereof can being implemented in combination in software, hardware or software and hardware. Wherein hardware components can utilize special logic to realize; Software section can store in memory, by suitable instruction execution system, for instance microprocessor or special designs hardware perform. When upgrade-system realizes with software mode, it is above-mentioned ROMPaq. It will be understood by those skilled in the art that such scheme all or part of can use computer executable instructions and/or be included in processor control routine to realize, for instance on the such as programmable memory of the mounting medium of disk, CD or DVD-ROM, such as read only memory (firmware) or the data medium of such as optics or electrical signal carrier, provide such code. System and functional unit thereof in the present invention can be realized by the hardware circuit of the quasiconductor of such as super large-scale integration or gate array, such as logic chip, transistor etc. or the programmable hardware device of such as field programmable gate array, programmable logic device etc., can also realize with the software performed by various types of processors, it is also possible to realized by the combination of above-mentioned hardware circuit and software such as firmware.
The above is the preferred embodiment of the present invention; it should be pointed out that, for those skilled in the art, under the premise without departing from the principles of the invention; can also making some improvements and modifications, these improvements and modifications are also considered as protection scope of the present invention.
Claims (10)
1. the multi-ring MOST network communicating system of single host, it is characterised in that including: main frame, and many groups MOST looped network that parallel connection is on the host; Often group MOST looped network includes a TCP/IP passage and multiple communication node;
Each described communication node carries out TCP/IP data transmission respectively through MOST looped network and the described main frame at its place, via the external network connection interface on described main frame, it is achieved data communication with the Internet and transmission.
2. the multi-ring MOST network communicating system of single host as claimed in claim 1, it is characterised in that described main frame sets up the IP outbound communication network segment by Ethernet card and/or wireless communication module, it is achieved be connected with internet communication.
3. the multi-ring MOST network communicating system of single host as claimed in claim 2, it is characterised in that being respectively equipped with an independent Intranet IP on each described communication node, the communication network segment at described Intranet IP place and the described IP outbound communication network segment distinguish;
Each described communication node, for carrying out routing addressing by described Intranet IP, sends data to described main frame, or, receive the data coming from described main frame;
Data after processing, after the data received from Intranet IP are processed, via the described IP outbound communication network segment, are uploaded to the Internet by described main frame; Or, for receiving the downlink data obtained from the Internet via the described IP outbound communication network segment, and map to Intranet IP after being processed described downlink data processing, with the communication node in transmission to the MOST looped network corresponding with described Intranet IP.
4. the multi-ring MOST network communicating system of single host as claimed in claim 2 or claim 3, it is characterized in that, described main frame is additionally provided with TCP/IP forwarding module, for the transmission data on main frame are carried out address conversion: the Intranet IP at upstream data place is converted to the outer net IP being connected with internet communication; Or, the outer net IP at downlink data place, the Internet is converted to the Intranet IP being connected with MOST looped network communication node.
5. the multi-ring MOST network communicating system of single host as claimed in claim 1, it is characterised in that described main frame is additionally operable to the data of the different communication node between different MOST looped networks are forwarded, it is achieved overstate that the data of the network segment send and receive.
6. the multi-ring MOST network communicating system of single host as claimed in claim 1, it is characterised in that often group MOST looped network includes initial communication node and peripheral communications node respectively; Each described peripheral communications node is connected with described host hardware by the MOST network physical interface on described initial communication node;
Described initial communication node is provided with intelligent network interface and controls module; Often the peripheral communications node on group MOST looped network is communicatively coupled by MLB bus or usb bus and described intelligent network interface control module after being connected with described host hardware.
7. the multi-ring MOST network communicating system of single host as claimed in claim 6, it is characterised in that often the multiple communication nodes on group MOST looped network adopt optical fiber, are sequentially connected with in order from described initial communication node, form MOST closed-loop network;
It is one or more that each peripheral communications node is provided with MOST network physical interface, intelligent network interface controls in module, display screen, audio output device, touch interactive device, MLB bus or usb bus.
8. the multi-ring MOST network communicating system of single host as claimed in claim 7, it is characterised in that described main frame is provided with software application platform; Described software application platform includes controller, and, multiple for supporting communication protocol and the driver transmitted with external devices data;
Described for supporting to include TCP/IP internet communication protocol stack, udp protocol and Transmission Control Protocol with the communication protocol of external devices data transmission; Described driver includes independent usb driver, MLB driver, NAPI driver, ISOC driver and controls driver;
Wherein, described controller is for producing the control information controlling passage that the intelligent network interface in each group of MOST looped network controls between module; Described control driver, for starting the properly functioning of described controller;
Described NAPI driver is for driving the operation of Ethernet card; Described ISOC driver is for driving the transmission of the TS code stream in described main frame.
9. the multi-ring MOST network communicating system of single host as claimed in claim 8, it is characterised in that described software application platform, for being started the application service on described main frame by software initialization, including:
Judge often whether group MOST looped network is closed-loop network;
MAC Address is distributed to the communication node on each group of MOST looped network when MOST looped network is closed-loop network often organizing;
Detect whether each communication node all obtains MAC Address; If so, host record all communication nodes information and the various application services started on each group of MOST looped network are then started; If it is not, then point out error message by main frame.
10. the multi-ring MOST network communicating system of single host as claimed in claim 8, it is characterised in that each communication node often organizing MOST looped network is additionally operable to send multimedia request to described main frame independently;
Described main frame is additionally operable to ask according to described multimedia, result will be performed according to described TCP/IP internet communication protocol stack, udp protocol, Transmission Control Protocol, sent to corresponding communication node by NAPI driver, and by described ISOC driver, multi-medium data is transmitted to corresponding communication node in TS code stream mode.
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| CN201610059599.5A CN105634896A (en) | 2016-01-28 | 2016-01-28 | Single-host polycyclic MOST network communication system |
| PCT/CN2016/111946 WO2017128905A1 (en) | 2016-01-28 | 2016-12-24 | Communication system using single host and multiple ring topology most networks |
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| CN201610059599.5A CN105634896A (en) | 2016-01-28 | 2016-01-28 | Single-host polycyclic MOST network communication system |
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