CN210899641U - Data distribution device with extensible interface - Google Patents

Abstract

The utility model relates to an interface extensible data distribution device, at least including data connection's first data transceiver unit in proper order, the treater, dispatch subassembly and second data transceiver unit, when dispatch subassembly transceiver data, the data buffer that the dispatch subassembly is used for data storage sends respectively and receives the treater via at least one, first data transceiver unit and is used for can acquireing the data of the first physical interface of physical layer state at least, first physical interface and second data transceiver unit data connection. The utility model discloses a hardware setting of a plurality of data buffers alleviates the unmatched contradiction of speed between dispatch subassembly and treater and first data transceiver unit and the second data transceiver unit. In addition, the parallel data channels brought by the data buffer can greatly improve the parallelism of the scheduling component and the processor for reading, writing and storing the data of the first data receiving and transmitting unit and the second data receiving and transmitting unit, thereby obviously improving the data reading and writing speed.

Description

Data distribution device with extensible interface

Technical Field

The utility model relates to the field of communication technology, a interface extensible data distribution device is related to.

Background

Under the background of rapid development of wireless network Technology, wide deployment of diversified network devices, and increasing popularity of multi-network interface mobile terminals, implementing parallel data transmission based on multiple Radio Access Technologies (RATs) will be one of the research hotspots in the future communication field. On one hand, the Wireless communication systems which are layered endlessly provide Heterogeneous Network (Heterogeneous Network) environments for users, and the Heterogeneous networks include Wireless Personal Area Networks (WPANs) represented by Bluetooth and Zigbee, Wireless Local Area Networks (WLANs) represented by Wi-Fi and WiGig, Wireless Metropolitan Area Networks (WMANs) represented by WiMAX, mobile communication networks represented by 3G, 4G and 5G, satellite networks, Ad Hoc networks, Wireless sensor networks, and the like. On the other hand, the existing communication terminal generally has multiple network interfaces, for example, a laptop is configured with a wired local area network and a wireless Wi-Fi network adapter, and the smart phone can access both a cellular network (UMTS, 3G, 4G, 5G, etc.) and a Wi-Fi network. Furthermore, network operators typically configure backup links and devices in the access and backhaul links to function in the event of network failure. Thus, multiple paths may exist between two communication endpoints. Naturally, the idea of using multiple paths simultaneously arises, thereby improving the robustness and transmission performance of the end-to-end connection. Such multi-path connections can balance load, dynamically switch, and automatically transfer traffic from the most congested, most vulnerable path to a better path.

For example, chinese patent publication No. CN206422787U discloses an apparatus for communication, comprising: a first port configured to receive and transmit data according to a first communication protocol, the first port being part of a first virtual local area network having a first virtual local area network identifier; a second port configured to receive and transmit data according to a second communication protocol, the second port being part of a second virtual local area network having a second virtual local area network identifier, the second virtual local area network being different from the first virtual local area network, the first communication protocol being different from the second communication protocol; an entry classification entity configured for: receiving a data packet; identifying a virtual local area network identifier of the data packet as the first virtual local area network identifier; determining that the first virtual local area network identifier is to be changed to the second virtual local area network identifier based on a mapping table; and changing the first virtual local area network identifier to the second virtual local area network identifier; and a forwarding entity configured to forward a data packet for transmission on the first port or the second port by: evaluating one or more criteria for a classification setting entry for forwarding the data packet on the first port based on the data packet; forwarding the data packet on the first port and changing the virtual local area network identifier of the data packet to the first virtual local area network identifier if the one or more criteria are met; evaluating a dynamic entry for forwarding the data packet on the second port based on the data packet; and forwarding the data packet on the second port if the dynamic entry specifies forwarding the data packet on the second port. With the above arrangement, the utility model can use Virtual Local Area Network (VLAN) remapping for multipath switching.

However, in a special application scenario, for example, in an application scenario of high-speed movement such as on a high-speed rail, on a train, or in an automobile, the multipath transmission more utilizes mobile communication networks of different systems of different operators to achieve the gain of the aggregation bandwidth. However, as the driving position of the vehicle changes, the strength of the signal changes, so that the mobile communication signal on the vehicle is in a disconnected-connected state. Since the instability of signal connection causes a rapid decrease in network throughput, Quality of Experience (QoE) of users in vehicles is in urgent need to be improved.

For example, chinese patent publication No. CN208656763U discloses a multifunctional vehicle-mounted router control circuit and a router, including a main control chip, a Wi-Fi signal transmitting circuit, a 3G/4G communication circuit, and a 3G/4G timed redial circuit; the Wi-Fi signal transmitting circuit, the 3G/4G communication circuit and the 3G/4G timing redial circuit are all connected with the main control chip; the 3G/4G timing redialing circuit comprises a watchdog chip U2, a timer chip U1, a field effect tube U4, a triode Q1, a triode Q2, a triode Q3 and a triode Q4; the triode Q1, the triode Q2 and the triode Q3 are NPN type triodes; the triode Q4 is a PNP type triode; the field effect tube U4 is a P-channel field effect tube U4; the source electrode of the field effect transistor U4 is connected to a first direct current power supply; the drain electrode of the field effect tube U4 outputs a second direct current power supply; the grid of the field effect transistor U4 is connected to the ground wire through a resistor R2; the input end of the watchdog chip U2 is connected to the main control chip; the power supply input end of the watchdog chip U2 is connected to a second direct-current power supply; the output end of the watchdog chip U2 is connected to the base electrode of the triode Q1; the emitter of the triode Q1 is connected to the ground wire; the collector of the triode Q1 is connected to a second direct current power supply through a resistor R1; the trigger input end of the timer chip U1 is respectively connected to a first direct-current power supply and the collector electrode of the triode Q2; the emitter of the triode Q2 is connected to the ground wire; the base of the transistor Q2 is connected to the collector of the transistor Q1; the power supply input end of the timer chip U1 is connected to a first direct-current power supply; the output end of the timer chip U1 is connected to the base electrode of the triode Q3; the collector of the triode Q3 is connected to the ground wire, the emitter of the triode Q3 is connected to the base of the triode Q4, and the emitter of the triode Q4 is connected to the first direct current power supply; the collector of the triode Q4 is connected to the gate of the field effect transistor U4; and the second direct current power supply is connected to the 3G/4G communication circuit and supplies power to the 3G/4G communication circuit. According to the 3G/4G automatic redial circuit, after the 3G/4G communication circuit works for a certain time, the power supply of the 3G/4G communication circuit is automatically cut off for a period of time, so that the 3G/4G communication circuit is firstly powered off and stops working for a period of time and then works again, therefore, the main control chip can automatically reconnect the telecommunication network once every interval of a period of time, and the vehicle-mounted router and the telecommunication base station are ensured to keep good communication. However, this patent does not consider the bad state of moving a network connection in the case of high-speed movement, for example, documents [1] ding Wang, Yufan Zheng, Yunzhe Ni, Chenren Xu, Feng Qian, Wangyang Li, Wantong Jiang, Yihua Cheng, Zhuo Cheng, yunjie Li, Xie Xiufeng, Yi Sun, and Zhongfeng Wang, an active-passive raw of train for a TCP performance over the high speed train at 350 km/h, in ac mob com,2019, indicating that the disconnection or interruption of the mobile communication network occurs once every 8.6 seconds, and the TCP throughput drops by more than 80% compared to when the train is stationary. Under such a highly frequent disconnection-connection mode, the router control circuit provided by the patent enables the router to be in a disconnection-reconnection state continuously, and cannot provide a long-time connection network state for a user, thereby resulting in unfriendly internet experience, for example, when the user browses large text data on the internet, 8.6 seconds of network connection time can only load partial data, so that the user cannot view the remaining text information after reading the partial data, and can acquire complete read data by waiting for intermittent disconnection-connection loading for many times. Therefore, a scheduling system capable of presetting a scheduling policy needs to be arranged in a routing or data forwarding device, and can be switched to another system or other mobile communication networks of an operator or a frequency band according to the disconnection state of the current mobile network, so that the disconnection time in a high-speed network environment is reduced, and the network throughput is prevented from being greatly reduced due to frequent interruption.

For example, chinese patent publication No. 201303425Y discloses a client device including a gateway module and a wireless extension module connected to each other, where the wireless extension module includes at least two wireless extension sub-modules, the gateway module is connected to the wireless extension module, and the gateway module includes: the scheduling submodule controls at least one wireless expansion submodule in the wireless expansion modules to carry out wireless network access according to a preset scheduling strategy; and the storage sub-module stores the identification information of the plurality of wireless expansion sub-modules in the expansion module.

It should be noted that the upper computer maps the corresponding scheduling policy or scheduling method to the scheduling module through the communication serial port connected to the scheduling module, so as to implement the corresponding scheduling policy or scheduling method on hardware. Furthermore, a great number of mature scheduling strategies or scheduling methods related to multipath network communication exist in the prior art.

For example, publication No. CN110278149A discloses a method for scheduling data packets of a multipath transmission control protocol based on deep reinforcement learning, which is characterized by comprising the following steps: (1) dividing a data packet scheduling process of an MPTCP sender into a plurality of scheduling periods; (2) in each scheduling period, an MPTCP sender measures network parameters as the states of a network environment, inputs the environment states into an Actor neural network representing a data packet scheduling strategy, and executes scheduling of the scheduling period according to scheduling actions output by the Actor neural network; (3) calculating a reward value of a scheduling action output by the Actor neural network in each scheduling period according to a set reward function; (4) inputting the environment state of each scheduling period, the reward value of the reward function and the scheduling action into a Critic neural network, and outputting an evaluation result of the scheduling action, namely the quality of the action; (5) and updating the Actor neural network parameters, namely updating the data packet scheduling strategy and updating the Critic neural network parameters at the same time according to the evaluation result output by the Critic neural network. In a Multi-Path transmission control Protocol (MPTCP), a periodic scheduling mechanism is set to convert a data packet scheduling process into a markov decision process, and through deep reinforcement learning, a neural network is used to represent a data packet scheduling strategy of the MPTCP, and an optimal data packet scheduling strategy under various network environments is obtained. The problem that heuristic MPTCP data packet scheduling cannot adapt to complex and diverse dynamic network environments to cause MPTCP performance reduction is fundamentally solved.

For example, chinese patent publication No. CN109347738A discloses a multipath transmission scheduling optimization method for a vehicle-mounted heterogeneous network, which includes the following steps: step 1: estimating the number of out-of-order data packets and the required buffer size; step 2: if the predicted required buffer area is larger than the available buffer area, starting Q learning, finding the sub-flows with poor performance through throughput prediction and a path selection algorithm of available bandwidth, and stopping transmitting through the sub-flows; and step 3: once the topology changes such that the available receive buffer exceeds 2.5 times the required buffer size, all the dropped sub-streams are reused to send data.

For example, the document [2] Joshua Hare, Lance Hartung, and Sun Banerjee. Transpartflow migration through streaming for multi-homed vehicular inter-networking facilities. in IEEE VNC,2013 discloses a technique called FlomiS by which a flow can be migrated from one network to another without any modification to the endpoint (Internet-based server or mobile client). Aiming at the problem that each cellular path in a mobile environment encounters a pause and a failure, thereby causing network traffic to be interrupted, the technology only implements a FloMiS mechanism in a gateway, and the gateway restarts a request for the interrupted stream content through the mechanism and transparently splices the interrupted stream back to an original stream to be delivered to a mobile client. FloMiS aims at optimizing the traffic for most networks, and experimental data shows that FloMiS can migrate more than 93% of flows in a short two round trip time, and clients will typically recover after a few minutes of disconnection.

The scheduling policy or the scheduling method disclosed in the above patent document is mapped to the scheduling module, so that the vehicle-mounted router or the data distribution device transmits data through other connected mobile communication networks by using the path diversity of the scheduling module through the relay of the mobile communication network in a state where a certain mobile network is disconnected, thereby realizing bandwidth aggregation and alleviating link failure. However, based on a high-speed network environment with highly intermittent connections interrupted once every 8.6 seconds and network connection requests of at least hundreds of users in a motor train, the requirement on the processing capacity of a router or a data distribution device in the prior art is high, not only data with throughput of at least upper GB needs to be processed every second, but also the processing capacity is limited by the existing static and rigid TCP/IP protocol architecture, adjacent layers can only perform information transfer through the existing interface, a scheduling module located at a transmission layer or an application layer cannot sense state information of other layers and perform efficient cross-layer cooperative transmission, and therefore, a data distribution device with an expandable interface needs to be provided, which not only can provide a fast, efficient and safe hardware basis for data processing of the scheduling module, but also can directly acquire the state of a physical layer of a mobile communication network through an expandable physical interface, the scheduling module is provided with at least the state information of the physical layer to improve the switching efficiency of the scheduling module and the reliability of data distribution in a network environment with highly intermittent connection.

Furthermore, on the one hand, due to the differences in understanding to the person skilled in the art; on the other hand, since the inventor studied a lot of documents and patents when making the present invention, but the space did not list all details and contents in detail, however, this is by no means the present invention does not possess these prior art features, but on the contrary the present invention has possessed all features of the prior art, and the applicant reserves the right to increase the related prior art in the background art.

SUMMERY OF THE UTILITY MODEL

The utility model provides a not enough to prior art exists, the utility model provides an interface extensible data distribution device includes first data transceiver unit, treater, scheduling subassembly and the second data transceiver unit of electricity connection in proper order at least. The scheduling component is respectively connected with the processor, the first data transceiver unit and a first physical interface which is used for at least being capable of acquiring the state of a physical layer through at least one data buffer used for storing data. The first physical interface is connected with the second data transceiver unit.

According to a preferred embodiment, the scheduling component, the second data transceiver unit, the first physical interface and the data buffer are connected in such a way as to form a closed loop. The second data transceiver unit at least comprises an integrated baseband component and a radio frequency component which are connected with each other. The integrated baseband assembly includes at least a first baseband and a second baseband. The first baseband and the second baseband are respectively connected with the first physical interface and the scheduling component, so that the second data transceiver unit is connected with the first data transceiver unit through a closed loop formed by the data buffer, the scheduling component and the processor.

According to a preferred embodiment, the first data transceiver unit comprises at least a wireless module and at least one network adapter. The wireless module and the at least one network adapter are respectively connected with the data buffer to access a closed loop formed by the data buffer, the processor, the first physical interface, the second data transceiver unit and the scheduling component.

According to a preferred embodiment, the radio module and the radio frequency assembly are each connected to at least one antenna interface. The wireless module is connected with the first antenna through at least one antenna interface. The radio frequency assembly includes at least two radio frequency modules. Each radio frequency module is connected with the first antenna and/or the second antenna through at least one antenna interface.

According to a preferred embodiment, the first physical interface is connected to the first baseband and the second baseband via a switch, respectively.

According to a preferred embodiment, the first data transceiver unit and the second data transceiver unit are arranged in such a way that they are structurally identical to one another and can transmit data in both directions.

The utility model also provides a data distribution device, at least including first data transceiver unit, treater, dispatch subassembly and the second data transceiver unit of electricity connection in proper order. The scheduling component at least comprises a first scheduling module, a second scheduling module and a third scheduling module which are connected in sequence. The first scheduling module is respectively connected with the first data transceiver unit, the processor and a first physical interface which is used for at least being capable of acquiring the physical layer state through at least one data buffer used for storing data. The second scheduling module is connected with the first physical interface through at least one data buffer for data storage. The third scheduling module, the data buffer, the second data transceiver unit, and the first physical interface are connected to form a closed loop.

According to a preferred embodiment, the first data transceiver unit is connected to the second data transceiver unit through a closed loop formed by the data buffer, the first scheduling module, the second scheduling module, the third scheduling module, and the processor.

According to a preferred embodiment, the first data transceiver unit comprises at least a wireless module and at least one network adapter. The wireless module and the at least one network adapter are respectively connected with the data buffer to access a closed loop formed by the data buffer, the processor, the first physical interface, the second data transceiver unit and the scheduling component.

The utility model also provides a data distribution device, at least including first data transceiver unit, treater, dispatch subassembly and the second data transceiver unit of electricity connection in proper order. The scheduling component is respectively connected with the processor, the first data transceiver unit and a first physical interface which is used for at least being capable of acquiring the state of a physical layer through at least one data buffer used for storing data. The first physical interface is connected with the second data transceiver unit. The scheduling component is connected with the upper computer through at least one second physical interface.

The utility model has the advantages that:

the processing and transmission of network connection requests by a large number of users on a high-speed rail or motor vehicle, and the resulting large amount of network data, requires not only the scheduling component and processor to read and store a large amount of data, but also a processing speed at which the scheduling component and processor can match the network throughput. If the speed mismatch can cause a large amount of data to be accumulated, and the synchronization and effective processing of data transmission cannot be realized, especially for a dynamic network environment with highly intermittent connection, the scheduling component is crucial to the switching of network connection and data distribution, so the matching of data reading and storing speeds among the scheduling component, the processor, the first data transceiver unit and the second data transceiver unit severely restricts the throughput of network connection and the reliability of end-to-end transmission. The utility model discloses a hardware setting of a plurality of data buffers alleviates the unmatched contradiction of speed between dispatch subassembly and treater and first data transceiver unit and the second data transceiver unit. In addition, the parallel data channels brought by the data buffer can greatly improve the parallelism of the scheduling component and the processor for reading, writing and storing the data of the first data receiving and transmitting unit and the second data receiving and transmitting unit, thereby obviously improving the data reading and writing speed.

Drawings

FIG. 1 is a simplified block diagram of a preferred interface extensible data distribution apparatus of the present invention;

fig. 2 is a schematic diagram of a preferred first physical interface of the present invention connected to an integrated baseband assembly;

FIG. 3 is a simplified block diagram of a preferred data distribution apparatus of the present invention;

FIG. 4 is a simplified block diagram of another preferred data distribution apparatus of the present invention;

FIG. 5 is a simplified block diagram of yet another preferred data distribution apparatus of the present invention; and

fig. 6 is a schematic circuit diagram of a second physical interface according to the present invention.

List of reference numerals

1: the first data transceiver unit 2: the processor 3: scheduling component

4: the second data transceiver unit 5: the data buffer 6: memory device

7: first physical interface 8: the antenna interface 9: second physical interface

10: an upper computer 11: the wireless module 12: network adapter

31: the first scheduling module 32: the second scheduling module 33: third scheduling module

41: the integrated baseband component 42: the radio frequency components 71: switch

91: the interface entity 92: the interface chip 93: common mode filter

411: first base band 412: second base band 413: third base band

421: the radio frequency module 4110: the FPGA chip 4120: DSP chip

Detailed Description

The following detailed description is made with reference to fig. 1 to 6.

Example 1

The embodiment aims to overcome the defects in the prior art, and aims to provide a hardware basis for reliable and efficient operation of the scheduling component 3 by setting corresponding hardware and changing a hardware connection relationship, in particular to solve the problem that the scheduling component 3 positioned on a transmission layer or an application layer is limited by the existing static and rigid TCP/IP protocol architecture, and efficient cross-layer cooperative transmission cannot be performed due to the fact that state information of other layers cannot be sensed, and provides an interface-extensible data distribution device capable of directly acquiring physical layer data state information at least, so that the scheduling component 3 can directly drive physical layer data connected with a network, cross-layer cooperative transmission is realized to remarkably improve the data processing speed of the scheduling component 3, and the network state of highly intermittent connection is adapted.

The utility model provides an interface extensible data distribution device, at least including first data transceiver unit 1, treater 2, scheduling subassembly 3 and the second data transceiver unit 4 of electricity connection in proper order. Preferably, as shown in fig. 1, the first data transceiving unit 1 comprises at least a wireless module 11 and at least one network adapter 12. The wireless module 11 may be a model ESP32TR2.4W wireless module that integrates dual modes of Wi-Fi and bluetooth. The wireless module 11 may also be a dual-band Wi-Fi module, model WG203, supporting full duplex communication and supporting simultaneous operation in the 2.4GHz and 5GHz bands. 1-14 channels are supported in the 2.4GHz band, and all signals of 5-5.9GHz are supported in the 5GHz band. Preferably, as shown in fig. 1, the wireless module 11 is connected with the antenna interface 8. Since the wireless module 11 supports the 2.4G and 5G dual-band simultaneous operation and can simultaneously support 2 SSID-Wi-Fi signals, the wireless module 11 can be connected to the two antenna interfaces 8. The antenna interface 8 may be an SMA interface, a TNC interface, an MMCX interface. The antenna interface 8 is connected to the first antenna so that the wireless module 11 can transmit signals through the first antenna. The first antenna may be an omni-directional antenna supporting 2.4GHz and 5.8GHz N-type female heads of model HGV-2458-05U disposed on the data distribution device. The first antenna and data distribution device may be disposed in a motor car, a train, and a car. Through the setting mode, the intelligent terminals of various brands on the market can be ensured to be accessed to the data distribution device provided by the embodiment through Wi-Fi, so that the intelligent terminals of users on motor cars, trains and automobiles are accessed to the network through the data distribution device provided by the embodiment.

Preferably, the network adapter 12 may be a gigabit network card having a model number EXPI9400 PT. Preferably, a wired interface can be provided for users in trains, motor cars and automobiles to access the data distribution means provided by the present embodiment through the network adapter 12.

Preferably, the processor 2 may be a processing chip, an integrated circuit, or a combination of multiple processing chips. The processor 2 can be a processing chip such as an FPGA, an ARM, a DSP, a CPU, a GPU and the like. For example, the processor may be a combination of at least one Krait 400 processing chip based on the ARM architecture. At least one of the processors 2 may include two Krait 400, and the two Krait 400 may be connected in a bridge connection manner, and the main frequency may reach up to 2.3GHz, and may process data with a throughput of 5 Gbps.

Preferably, the scheduling component 3 is connected to the processor 2, the first data transceiving unit 1 and the first physical interface 7 for enabling at least the acquisition of the physical layer status via at least one data buffer 5 for data storage, respectively. Preferably, the processor 2 is connected to the first physical interface 7 via the data buffer 5. Preferably, the data buffer 5 may be an SRAM memory of model VTI7064, with a capacity of 64Mbit, packaged as an 8-pin SOP-8, with relatively low power consumption. The data memory 5 may be constituted by a plurality of SRAM memories. Preferably, the scheduling component 3 may be an FPGA chip or a DSP chip mapped with a scheduling algorithm. Preferably, the processing and transmission of network connection requests of a large number of users on high-speed rails or motor cars and of the large amount of network data resulting therefrom requires not only the scheduling component 3 and the processor 2 to read and store a large amount of data, but also a processing speed at which the scheduling component 3 and the processor 2 can be matched to the network throughput. If the speed mismatch causes a large amount of data to be accumulated, and synchronization and effective processing of data transmission cannot be realized, especially for a dynamic network environment with highly intermittent connection, the scheduling component 3 is crucial to switching of network connection and data distribution, so matching of data reading and storing speeds among the scheduling component 3, the processor 2, the first data transceiver unit 1 and the second data transceiver unit 4 severely restricts the throughput of network connection and the reliability of end-to-end transmission. The utility model discloses a speed unmatched contradiction between dispatch subassembly 3 and treater 2 and first data transceiver unit 1 and the second data transceiver unit 4 is alleviated in the setting of a plurality of data buffers 5. In addition, the parallel data channel brought by 8 pins of the SRAM memory and the combination of multiple SRAMs can greatly improve the parallelism of the scheduling component 3 and the processor 2 in reading, writing and storing data of the first data transceiver unit 1 and the second data transceiver unit 4, thereby significantly improving the data reading and writing speed.

Preferably, the data buffer 5 may also be a memory 6 with a large capacity and a high read-write speed. The memory 6 may be a plurality of SRAM memories and a plurality of SDRAM memories of model number F4-2400C15Q-32 GTZR. Preferably, although a large amount of data can be transmitted to the processor 2 or the scheduling component 3 in parallel communication with a PCI bus, a USB interface, etc., a huge bus bandwidth required for transmitting a large amount of user data needs to be satisfied, and a huge data stream generated by a plurality of parallel data transmission channels is difficult to implement for any bus and is costly, so that the storage requirement of a large amount of data can be alleviated by replacing a part of the data buffer 5 with the memory 6, for example, as shown in fig. 1, replacing the data buffer 5 connected to the first physical interface 7 with the memory 6, so as to store the huge data stream generated by the plurality of parallel data transmission channels in the SDRAM memory in the memory 6.

Preferably, the second data transceiving unit 4 comprises at least an integrated baseband component 41 and a radio frequency component 42 connected to each other. Preferably, the second data transceiver unit 4 may further include a network adapter 12 or a hardware device capable of resolving other network protocols, such as a Wi-Fi module, a bluetooth module, a Zigbee module, etc. Preferably, the integrated baseband assembly 41 includes at least a first baseband 411 and a second baseband 412. The first baseband 411 and the second baseband 412 may be 5G baseband chips with the model of Exynos Modem 5100. The first baseband 411 and the second baseband 412 may also be baseband boards including a plurality of DSPs and FPGAs, such as a baseband board with model AMC2C6670, and include one configurable FPGA chip 4110 with model Virtex-6 and two DSP chips 4120 with model TMS320C6670 inside, as shown in fig. 2. Through the setting mode, compared with a 3G communication system, the LTE and 5G communication system has at least one order of magnitude increase in algorithm complexity and transmission performance, and the application requirement of processing a large amount of data at high speed in real time cannot be met only by a single processor, so that the processing performance of the system can be improved through the distributed parallel processing of the multiple processors.

Preferably, The first baseband 411 and The second baseband 412 may modulate and demodulate Mobile signals of different formats, such as Global System for Mobile Communication (GSM), Wideband Code Division Multiple Access (WCDMA), Code Division Multiple Access (CDMA), Time Division-Synchronous Code Division Multiple Access (TD-SCDMA), third Generation Mobile Communication technology (The 3rd-Generation Mobile Communication, 3G) Long term Evolution (Long Evolution, LTE), System Architecture item (4G) compliant with The fourth Generation Mobile Communication technology (The 4th-Generation Mobile Communication, 4G) standard, System Architecture item (sd) with fourth Generation Mobile Communication features, and System infrastructure component (sd) 21, 42, so that at least two rf Communication modules, such as a GSM, a WCDMA, CDMA, a GSM, CDMA, GSM, WCDMA, CDMA, GSM, CDMA, GSM, CDMA, GSM, WCDMA, CDMA, GSM.

Preferably, each radio frequency module 421 is connected to the first antenna and/or the second antenna through at least one antenna interface 8. Since the railcars on the high-speed rail may generate electromagnetic shielding during driving, and the first antenna is disposed in the vehicle and may not receive signals, each rf module 421 may be connected to a second antenna disposed outside the vehicle. Preferably, the second antenna may be an antenna that is located outside the vehicle by the high-speed rail company itself.

According to a preferred embodiment, the first physical interface 7 is connected to the second data transceiving unit 4. Preferably, the first physical interface 7 is connected to the first baseband 411, the second baseband 412 and the third baseband 412 through the switch 71, respectively. Preferably, as shown in fig. 2, the first physical interface 7 may also be connected with the third baseband 413 through a switch 71. Preferably, a RapidIO interconnect scheme may be employed for the first baseband 411, the second baseband 412, and the third baseband 413 to connect the FPGA chip 4110 and the DSP chip 4120. Compared with Ethernet, PCIe and the like, the serial RapidIO has the advantages of high packaging efficiency, low software overhead, support of hardware error correction retransmission and the like, and is very suitable for a system environment with multi-chip cooperative work. The physical layer of the serial RapidIO adopts a full-duplex serial working mode, the electrical characteristics of the interface adopt an XAUI (10GbE Attachment Unit interface) interface, the coding mode adopts 8B/10B coding, and link management operations such as flow control, packet delimitation, error reporting and the like are completed through a special control code (namely K code) in 8B/10B. The link receiving end can extract clock information from the data stream without an independent clock line.

Preferably, the switch 71 may be a RapidIO switch of the type CPS-1848. The switch 71 functions like a router and performs packet switching of packets. Preferably, the connection between the FPGA chip 4110 and the DSP chip 4120 is made with the switch 71 via RapidIO. Through the setting mode, the data and the state information of the physical layer received by the FPGA chip 4110 through the radio frequency component 42 can be transmitted to the first physical interface 7 through the RapidIO and the switch 71, the first physical interface 7 transmits the information to the memory 6 so that the scheduling component 3 can directly drive the data, efficient cross-layer cooperative transmission is realized to adapt to a dynamic network environment with high gap connection, for example, the network connection state is disconnected or interrupted once every 8.6 seconds, and the efficiency of network connection switching and rapid distribution of a large amount of user data scheduling of the scheduling component 3 is improved.

According to a preferred embodiment, the scheduling component 3, the second data transceiving unit 4, the first physical interface 7 and the data buffer 5 are connected in such a way that a closed loop is formed. Preferably, as shown in fig. 1, the data buffer 5 connected to the first physical interface 7 may be replaced by a memory 6. Preferably, as shown in fig. 1, the first baseband 411, the second baseband 412 and the third baseband 413 are connected with the first physical interface 7 and the scheduling component 3, respectively. Preferably, the second data transceiving unit 4 may be connected to the first data transceiving unit 1 through a closed loop consisting of two data buffers 5, the scheduling component 3 and the processor 2. Through the setting mode, when the scheduling component 3 distributes the data of the user establishing the connection, the context data at least including the physical layer of the current network connection can be received through the first physical interface 7, the information such as throughput, path round-trip delay and the like of the current network connection can be acquired, and the information such as signal strength and the like of the physical layer can also be acquired, so that the scheduling component 3 can directly drive the data, and a hardware basis is provided for the rapid switching and data distribution of the scheduling component 3 through cross-layer cooperation.

Preferably, the wireless module 11 and the at least one network adapter 12 are connected to the data buffer 5 to access the closed loop formed by the data buffer 5, the processor 2, the first physical interface 7, the second data transceiver unit 4 and the scheduling component 3, respectively. Preferably, as shown in fig. 1, the data buffer 5 connected to the first physical interface 7 may be replaced by a memory 6. By this arrangement, the data received by the first data transceiver unit 1 can be transmitted to the processor 2 through the data buffer 5, and then transmitted to the scheduling component 3 through the data buffer 5 after the processor 2 completes high-level processing, such as data encapsulation and high-level application. Secondly, the memory 6 stores the physical layer information and the network state information of the second data transceiver unit 4 through the first physical interface 7, and the processor 2 calls and processes the data in the memory 6 and returns the data to the memory 6, so that the scheduling component 3 can drive the physical layer data in the memory 6 at a high speed to realize cross-layer cooperative transmission, thereby distributing the user data to the server.

According to a preferred embodiment, the first data transceiver unit 1 and the second data transceiver unit 4 are arranged in such a way that they are structurally identical to one another in order to be able to transmit data in both directions. Preferably, the data distribution device provided by this embodiment can also be used as a network middleware between a user and a server, and is suitable for a non-mobile environment. For example, in an office, a home, or a public place, the smart device of the user may be connected to the data distribution apparatus provided in this embodiment through a Wi-Fi, a wired network, or an LTE network, and then the data distribution apparatus distributes the data of the user to different networks, for example, a wired network, a Wi-Fi, or a mobile communication network such as LTE, that is, the data transmission process is that the smart terminal of the user is connected to the first data transceiver unit 1 at least through the Wi-Fi, the wired network, or the mobile communication network to receive the data of the user, and then transmits the data to the server side through the second data transceiver unit 4 in a network of multiple standards such as Wi-Fi, the wired network, or the mobile communication network. The data receiving process is that the second data receiving and sending unit 4 receives data transmitted by the server side at least through Wi-Fi, a wired network and a mobile communication network, and transmits the data to the intelligent terminal of the user side through the first data receiving and sending unit 1 through networks such as the Wi-Fi, the wired network and the mobile communication network. Therefore, during the bidirectional transmission, the first data transceiver unit 1 and the second data transceiver unit 4 have the same logical structure, for example, the first data transceiver unit 1 and the second data transceiver unit 2 both include the network adapter 12 to access the wired network, also include the wireless module 11 to access the Wi-Fi, and also include the integrated baseband component 41 and the radio frequency component 42 to access the mobile communication network. Preferably, either the first data transceiver unit 1 and the second data transceiver unit 4 comprise a network adapter 12 and a wireless module 11, so as to be able to access a wired network and Wi-Fi.

For ease of understanding, the working principle of the present embodiment is discussed.

When the data distribution device provided in the present embodiment is used, a plurality of data distribution devices can be provided in a motor car, a train, and an automobile. The passenger can connect the data distribution device provided by the embodiment through the Wi-Fi through the intelligent terminal, such as a mobile phone, a computer and a tablet computer. The data distribution apparatus provided in this embodiment establishes a connection with the passenger's smart terminal through the wireless module 11 of the first data transceiver unit 1. The data of the plurality of users acquired by the first data transceiver unit 1 is transmitted to the processor 2 through the data buffer unit 5, and is transmitted to the scheduling component 3 by returning to the data buffer unit 5 after being processed by the processor 2. Furthermore, the scheduling component 3 receives the network-connected physical layer data delivered by the second data transceiver unit 4 delivered by the first physical interface 7 via the memory 6 or another data buffer 5. In the case of a large number of network connection requests of a large number of users and processing and transmission of a large amount of network data generated thereby, a large amount of data is accumulated due to mismatch of processing speeds of the scheduling component 3 and the processor 2 matched with network throughput, and synchronization and effective processing of data transmission cannot be realized. In addition, the parallel data channels of the data buffer 5 or the memory 6 can greatly improve the parallelism of the scheduling component 3 and the processor 2 for reading and writing and storing the data of the first data transceiver unit 1 and the second data transceiver unit 4, thereby obviously improving the data reading and writing speed. In addition, the scheduling component 3 can directly drive the scheduling component 3 after the processing of the processor 2 through the physical layer state and data transmitted by the first physical interface 7, so that cross-layer cooperative transmission is realized, and a hardware basis for fast processing is provided for the scheduling component 3 to switch networks and distribute data in the face of a highly intermittently connected dynamic network environment. The scheduling component 3 distributes the data streams of the users to at least three operator provided mobile communication networks brought by the second data transceiving unit 4. The second data transceiver unit 4 is provided with at least two rf modules 421, so that two data transmission channels can be simultaneously provided, and parallel data transmission can be realized. The data distribution device connects a plurality of mobile communication networks of different systems through a base station (such as BTS, NodeB, eNodeB, etc.) and transmits data to a server side. In the case where the server side is provided with a multipath transmission function, the data distribution apparatus can establish multipath connection with the server side. In the case that the server does not have the multipath transmission function, the data distribution apparatus capable of establishing connection with the server according to the embodiment may be arranged on the 3G core network elements sgsn (serving GPRS Support node) and ggsn (gateway GPRS Support node) to establish the multipath connection. Preferably, the method may also be deployed in a 4G core network, for example, on network elements of an all IP packet core epc (evolved packet core) of lte (long Term evolution), such as an sgw (serving gateway) and a pgw (pdn gateway). Preferably, the method can also be deployed on a User Plane Function (User Plane Function) of a 5G core network.

Example 2

This embodiment is a further improvement of embodiment 1, and repeated contents are not described again.

The embodiment provides a data distribution device, which at least comprises a first data transceiver unit 1, a processor 2, a scheduling component 3 and a second data transceiver unit 4 which are electrically connected in sequence. Preferably, as shown in fig. 3, the present embodiment is different from embodiment 1 in that the scheduling component 3 at least includes a first scheduling module 31, a second scheduling module 32, and a third scheduling module 33 connected in sequence. The first scheduling module 31 is connected to the first data transceiving unit 1, the processor 2 and the first physical interface 7 for at least being able to obtain the physical layer status through at least one data buffer 5 for data storage. The second scheduling module 32 is connected to the first physical interface 7 via at least one data buffer 5 for data storage. The third scheduling module 33, the data buffer 5, the second data transceiver unit 4 and the first physical interface 7 are connected in such a way as to form a closed loop. Preferably, the first data transceiver unit 1 is connected to the second data transceiver unit 4 through a closed loop formed by the data buffer 5, the first scheduling module 31, the second scheduling module 32, the third scheduling module 33 and the processor 2. Preferably, the first data transceiving unit 1 comprises at least a wireless module 11 and at least one network adapter 12. The wireless module 11 and the at least one network adapter 12 are respectively connected to the data buffer 5 to access a closed loop formed by the data buffer 5, the processor 2, the first physical interface 7, the second data transceiver unit 4 and the scheduling component 3. Preferably, the first scheduling module 31, the second scheduling module 32, and the third scheduling module 33 may be FPGA chips or DSP chips mapped with different scheduling policies, and by this setting, for packet scheduling of a large number of users, scheduling processing of packets is performed in stages by using three separate scheduling modules, so that data congestion can be relieved, and stability and reliability of end-to-end transmission can be stabilized.

Example 3

This embodiment is a further improvement on embodiment 1, embodiment 2 and the combination between the two, and repeated contents are not described again.

The utility model also provides a data distribution device, at least including first data transceiver unit 1, treater 2, dispatch subassembly 3 and the second data transceiver unit 4 of electricity connection in proper order. The scheduling component 3 is connected to the processor 2, the first data transceiving unit 1 and the first physical interface 7 for enabling at least the acquisition of the physical layer status via at least one data buffer 5 for data storage. The first physical interface 7 is connected to the second data transceiving unit 4. Preferably, as shown in fig. 4 and 5, the difference between the present embodiment and the combination of embodiments 1 and 2 is that the scheduling component 3 is connected to the upper computer 10 through at least one second physical interface 9. Preferably, the second physical interface 9 comprises at least an interface entity 91 and an interface chip 92 connected in sequence. The interface entity 91 is connected with the upper computer 10. The interface chip 92 is connected to the scheduling component 3. The interface entity 91 may be a USB interface. The interface chip may be an interface chip model FT245 RL. The scheduling component 3 may be a configurable FPGA chip. Preferably, the upper computer 10 may be a computer. Through the setting mode, the data exchange between the upper computer 10 and the scheduling component 3 can be realized in parallel, and other functions of the scheduling component 3 can still be realized under the condition of occupying few resources of the scheduling component 3. Moreover, through the communication between the upper computer 10 and the scheduling component 3, the configurable function of the scheduling component can be conveniently realized, for example, different scheduling algorithms or scheduling strategies are mapped under different network environments.

Preferably, a circuit diagram of the interface entity 91, the interface chip 92 and the scheduling component 3 is shown in fig. 6. The interface entity 91 is connected to an interface chip 92 via a common mode filter 93. Preferably, the common mode filter 93 may be an EMC component of type ACM-2012-900. By the arrangement mode, the signals can be prevented from being interfered. Preferably, since the order of the control pins of the interface chip 92 is not identical to the control timing of the scheduling component 3, to avoid the operation, RD # and WR of the interface chip 92 are connected to a general I/O port of the scheduling component 3, as shown in fig. 6.

It should be noted that the above-mentioned embodiments are exemplary, and those skilled in the art can devise various solutions in light of the present disclosure, which are also within the scope of the present disclosure and fall within the scope of the present disclosure. It should be understood by those skilled in the art that the present specification and drawings are illustrative only and are not limiting upon the claims. The scope of the invention is defined by the claims and their equivalents.

Claims (10)

1. A data distribution device with an expandable interface, which at least comprises a first data transceiver unit (1), a processor (2), a scheduling component (3) and a second data transceiver unit (4) which are connected in sequence, and is characterized in that, when the scheduling component (3) transceives data, the scheduling component (3) respectively transmits and receives the data of the processor (2), the first data transceiver unit (1) and a first physical interface (7) which is used for at least being capable of acquiring the state of a physical layer via at least one data buffer (5) for data storage, wherein,

the first physical interface (7) is in data connection with the second data transceiver unit (4).

2. The data distribution apparatus according to claim 1, wherein the scheduling component (3), the second data transceiving unit (4), the first physical interface (7) and the data buffer (5) are data connected in a manner forming a closed loop, wherein,

the second data transceiving unit (4) comprises at least an integrated baseband component (41) and a radio frequency component (42) connected to each other, the integrated baseband component (41) comprising at least a first baseband (411) and a second baseband (412), wherein,

the first baseband (411) and the second baseband (412) are in data connection with the first physical interface (7) and the scheduling component (3), respectively, so that the second data transceiver unit (4) is in data connection with the first data transceiver unit (1) via a closed loop formed by the data buffer (5), the scheduling component (3) and the processor (2).

3. The data distribution device according to claim 2, characterized in that the first data transceiving unit (1) comprises at least a wireless module (11) and at least one network adapter (12), wherein,

the wireless module (11) and the at least one network adapter (12) are respectively in data connection with the data buffer (5) to access a closed loop formed by the data buffer (5), the processor (2), the first physical interface (7), the second data transceiver unit (4) and the scheduling component (3).

4. The data distribution device according to claim 3, characterized in that the wireless module (11) and the radio frequency component (42) are each connected with at least one antenna interface (8), wherein,

the wireless module (11) is connected with a first antenna through at least one antenna interface (8),

the radio frequency assembly (42) comprises at least two radio frequency modules (421), each radio frequency module (421) is connected with a first antenna and/or a second antenna through at least one antenna interface (8).

5. A data distribution arrangement according to claim 4, characterized in that the first physical interface (7) is connected to the first baseband (411) and the second baseband (412) respectively through a switch (71).

6. A data distribution arrangement according to claim 5, characterized in that the first data transceiving unit (1) and the second data transceiving unit (4) are arranged in such a way that they are in structural agreement with each other in a way that data can be transmitted in both directions.

7. A data distribution device at least comprises a first data receiving and sending unit (1), a processor (2), a scheduling component (3) and a second data receiving and sending unit (4) which are connected in sequence, and is characterized in that the scheduling component (3) at least comprises a first scheduling module (31), a second scheduling module (32) and a third scheduling module (33) which are connected in sequence,

the first scheduling module (31) transmits and receives data of the first data transceiving unit (1), the processor (2) and the first physical interface (7) for being able to acquire at least a physical layer status via at least one data buffer (5) for data storage, respectively,

the second scheduling module (32) transmits and receives data of the first physical interface (7) via at least one data buffer (5) for data storage,

the third scheduling module (33), the data buffer (5), the second data transceiver unit (4) and the first physical interface (7) are in data connection in a manner of forming a closed loop.

8. The data distribution apparatus according to claim 7, wherein the first data transceiver unit (1) is in data connection with the second data transceiver unit (4) via a closed loop formed by the data buffer (5), the first scheduling module (31), the second scheduling module (32), the third scheduling module (33) and the processor (2).

9. The data distribution device according to claim 7 or 8, characterized in that the first data transceiving unit (1) comprises at least a wireless module (11) and at least one network adapter (12), wherein,

the wireless module (11) and the at least one network adapter (12) are respectively in data connection with the data buffer (5) to access a closed loop formed by the data buffer (5), the processor (2), the first physical interface (7), the second data transceiver unit (4) and the scheduling component (3).

10. A data distribution apparatus, comprising at least a first data transceiver unit (1), a processor (2), a scheduling component (3) and a second data transceiver unit (4) in signal connection in turn, characterized in that, when the scheduling component (3) is transceiving signals, the scheduling component (3) receives and transmits signals of the processor (2), the first data transceiver unit (1) and a first physical interface (7) for enabling at least acquisition of a physical layer state, respectively, via at least one data buffer (5), wherein,

the first physical interface (7) is in signal connection with the second data receiving and transmitting unit (4), and the scheduling component (3) receives signals of the upper computer (10) through at least one second physical interface (9).

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