CN111614433B - Method for improving data transmission rate, communication system and storage medium - Google Patents

Method for improving data transmission rate, communication system and storage medium Download PDF

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Publication number
CN111614433B
CN111614433B CN201910134313.9A CN201910134313A CN111614433B CN 111614433 B CN111614433 B CN 111614433B CN 201910134313 A CN201910134313 A CN 201910134313A CN 111614433 B CN111614433 B CN 111614433B
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transmission rate
hub
data
communication devices
data packet
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CN201910134313.9A
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CN111614433A (en
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尤国雄
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Hytera Communications Corp Ltd
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Hytera Communications Corp Ltd
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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00Arrangements for detecting or preventing errors in the information received
    • H04L1/0001Systems modifying transmission characteristics according to link quality, e.g. power backoff
    • H04L1/0002Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the transmission rate
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L49/00Packet switching elements
    • H04L49/30Peripheral units, e.g. input or output ports
    • H04L49/3072Packet splitting
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02DCLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00Reducing energy consumption in communication networks
    • Y02D30/70Reducing energy consumption in communication networks in wireless communication networks

Abstract

The application discloses a method for improving data transmission rate, a communication system and a storage medium, wherein the method is applied to the communication system, the communication system at least comprises a first hub and a plurality of first communication devices, the first hub establishes connection with the plurality of first communication devices, and the method comprises the steps that when each first communication device acquires a first data packet, the first hub receives the plurality of first data packets from the plurality of first communication devices; the first hub combines the plurality of first data packets into a second data packet; the first hub sends the second data packet to other devices according to a second transmission rate, wherein the transmission rate of the first data packet is a first transmission rate, and the second transmission rate is larger than the first transmission rate. Through the mode, the data transmission rate can be improved, and the transmission of big data is realized.

Description

Method for improving data transmission rate, communication system and storage medium
Technical Field
The present application relates to the field of communications technologies, and in particular, to a method for improving a data transmission rate, a communications system, and a storage medium.
Background
At present, mobile communication services provided by a public telecommunication network are limited by network coverage, so that the mobile communication services cannot be used at any time and any place, the interfaces of a commonly used digital trunking communication system are not disclosed, the standards are not open enough, the equipment cost is high, the construction rate is low, and the requirements of emergency communication cannot be met; also, in order to achieve faster data transmission rates, advanced or complex modulation methods, increased bandwidth, and more complex hardware are required, and high power implementations are more likely to be weighed against design, level, and distance.
The inventor of the present application has found in long-term research and development that the advantage of strong data transmitting capability in the prior art is not utilized in the two-way interphone, and the interphone has the advantages of high transmitting power, good sensitivity and long transmission distance.
Disclosure of Invention
The application mainly solves the problem of providing a method for improving the data transmission rate, a communication system and a storage medium, which can improve the data transmission rate and realize the transmission of large data.
In order to solve the above technical problems, the technical solution adopted by the present application is to provide a method for improving a data transmission rate, where the method for improving a data transmission rate is applied to a communication system, and the communication system at least includes: a first hub and a plurality of first communication devices, the first hub establishing a connection with the plurality of first communication devices, the method comprising: when each first communication device acquires a first data packet, the first hub receives a plurality of first data packets from a plurality of first communication devices, and the transmission rate of the first data packets is a first transmission rate; the first hub combines the plurality of first data packets into a second data packet; the first hub sends the second data packets to the other devices according to a second transmission rate, wherein the second transmission rate is greater than the first transmission rate.
In order to solve the above technical problem, another technical solution adopted by the present application is to provide a communication system, which at least includes: the system comprises a first hub and a plurality of first communication devices, wherein the first hub establishes connection with the plurality of first communication devices, each first communication device is used for acquiring a first data packet, the first hub is used for receiving the plurality of first data packets from the plurality of first communication devices, combining the plurality of first data packets into a second data packet and sending the second data packet to other devices according to a second transmission rate, and the transmission rate of the first data packet is the first transmission rate which is larger than the first transmission rate.
In order to solve the above-mentioned technical problem, another technical solution adopted by the present application is to provide a storage medium, where the storage medium is used to store a computer program, and the computer program is used to implement the above-mentioned method for improving the data transmission rate when the computer program is executed by a processor.
Through the scheme, the application has the beneficial effects that: the first data packets are acquired by using a plurality of first communication devices, the first data packets are sent to the first hub by using a first transmission rate, the first hub combines the received plurality of first data packets into a second data packet, then the first hub sends the second data packet to other devices by using a second transmission rate, and the plurality of first communication devices are combined by using the transmission rate of each first communication device so as to improve the data transmission rate, so that the transmission of big data can be realized.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for the description of the embodiments will be briefly described below, and it is apparent that the drawings in the following description are only some embodiments of the present application, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art. Wherein:
FIG. 1 is a schematic diagram of a communication system according to an embodiment of the present application;
fig. 2 is a schematic structural diagram of another embodiment of a communication system provided by the present application;
FIG. 3 is a flow chart illustrating an embodiment of a method for improving data transmission rate according to the present application;
FIG. 4 is a flow chart of another embodiment of a method for improving data transmission rate according to the present application;
fig. 5 is a schematic structural diagram of a communication system in another embodiment of a method for improving a data transmission rate according to the present application;
FIG. 6 is a flow chart of another embodiment of a method for improving data transmission rate according to the present application;
fig. 7 is a schematic structural diagram of a communication system in another embodiment of a method for improving a data transmission rate according to the present application;
fig. 8 is a schematic structural diagram of an embodiment of a storage medium according to the present application.
Detailed Description
The following description of the embodiments of the present application will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present application, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.
Referring to fig. 1, fig. 1 is a schematic structural diagram of an embodiment of a communication system according to the present application, where the communication system at least includes: a first hub 11 and a plurality of first communication devices 12.
The first hub 11 establishes connection with a plurality of first communication devices 12 respectively for data transmission, and each first communication device 12 is configured to obtain a first data packet, where a transmission rate of the first data packet is a first transmission rate, that is, a rate of data transmission when the first communication device 12 receives the first data packet is the first transmission rate.
The first hub 11 has the function of receiving, transmitting, arranging and processing data packets from a communication source, and may use a communication protocol in order to ensure reasonable reception and transmission of signals or employ half duplex communication so that transmission data and reception data do not collide.
The first hub 11 is connected to other devices (not shown in the figure), and the first hub 11 is configured to receive a plurality of first data packets from a plurality of first communication devices 12, combine the plurality of first data packets into a second data packet, and send the second data packet to the other devices according to a second transmission rate; wherein the second transmission rate is greater than the first transmission rate.
Since the plurality of first communication devices 12 are used for transmitting big data, each first communication device 12 is used for transmitting data, and then the data are combined, so that one big data can be transmitted, and the data transmission rate can be improved; compared with the prior art, the data volume transmitted in the same time is increased, and the transmission of large data can be realized.
For example, the first communication device 12 is interphones, each having a transmission rate of 9.6kb/s; when a plurality of interphones are used, the data transmission rates can be multiplied, and if 6 interphones are used, the data transmission rate is 9.6 kb/s.6=57.6 kb/s.
Unlike the prior art, the present embodiment provides a communication system including at least the first hub 11 and the plurality of first communication devices 12, which receives the first data packets with the plurality of first communication devices 12 such that the rate of receiving the first data packets increases, and then combines the first data packets into the second data packets after receiving the first data packets so as to transmit the second data packets to other devices, and by combining the plurality of first communication devices 12 with the transmission rate of each first communication device 12, the data transmission rate is improved, enabling transmission of large data.
Referring to fig. 2, fig. 2 is a schematic structural diagram of another embodiment of a communication system according to the present application, where the communication system at least includes: a first hub 21, a plurality of first communication devices 22, a second hub 23, and a plurality of second communication devices 24.
The first hub 21 establishes connection with the plurality of first communication devices 22 respectively for data transmission, the first hub 21 is configured to obtain a first data packet, split the first data packet into a plurality of second data packets, and send the second data packets to the first communication devices 22.
The first communication device 22 is configured to receive the second data packet sent by the first hub 21 and forward the second data packet to other devices, where the other devices at least include a second hub 23 and a plurality of second communication devices 24, and the second hub 23 is connected to the plurality of second communication devices 24.
Further, the first communication devices 22 are correspondingly connected with the second communication devices 24, the number of the first communication devices 22 is equal to that of the second communication devices 24, each first communication device 22 sends second data packets to the corresponding second communication device 24, the second communication device 24 sends received second data packets to the second hub 23, and the second hub 23 combines the received second data packets to obtain first data packets, so that data transmission is achieved.
It can be appreciated that the number of other devices may be multiple, and the connection manner is similar to that in the above embodiment, so as to implement remote transmission of data, which is not described herein.
Unlike the prior art, the present embodiment provides a communication system in which a first data packet is split into a plurality of small second data packets, the second data packets are transmitted by using a plurality of first communication devices 22 and a plurality of second communication devices 24, so that the data transmission rate is increased, the second data packets are combined by using a second hub 23 to recover the original first data packets, and the plurality of first communication devices 22 and the plurality of second communication devices 24 are respectively combined by using the transmission rate of each of the first communication devices 22 and the second communication devices 24, so that data is transmitted, and the data transmission rate is increased while large data transmission is realized.
Referring to fig. 1 and 3, fig. 3 is a flowchart of a method for improving a data transmission rate according to an embodiment of the present application, where the method is applied to a communication system, and the communication system at least includes: a first hub 11 and a plurality of first communication devices 12, the first hub 11 establishing a connection with the plurality of first communication devices 12, the method comprising:
step 31: as each first communication device 12 acquires the first data packet, the first hub 11 receives a plurality of first data packets from a plurality of first communication devices 12.
The transmission rate of the first data packet is a first transmission rate, and when the first communication device 12 acquires the first data packet, the first data packet is sent to the first hub 11 at the first transmission rate, and the first hub 11 may be an intelligent hub.
Step 32: the first hub 11 combines a plurality of first data packets into a second data packet.
The first hub 11 is configured to receive a plurality of first data packets and combine the plurality of first data packets into a second data packet; specifically, the first hub 11, after receiving the first data packets transmitted from the plurality of first communication devices 12, combines the received data packets into the second data packet.
For example, each of the N first communication devices 12 receives one first data packet and transmits the received first data packet to the first hub 11, and the first hub 11 combines the received N first data packets so that the N first data packets become second data packets.
Step 33: the first hub 11 sends the second data packets to the other devices according to the second transmission rate.
Transmitting the second data packet to other devices by using the second transmission rate so as to realize data transmission, wherein the other devices can be mobile terminals, computers, intelligent watches or other devices with transmitting and receiving functions; wherein the second transmission rate is greater than the first transmission rate.
Unlike the prior art, the present embodiment provides a method for improving the data transmission rate, in which a plurality of first communication devices 12 are used to obtain a first data packet, the first data packet is sent to the first hub 11 using the first transmission rate, the first hub 11 combines the received plurality of first data packets into a second data packet, then the first hub 11 uses the second transmission rate to send the second data packet to other devices, and the data is transmitted after the plurality of first communication devices 12 are combined using the transmission rate of each first communication device 12, so that the data transmission rate is improved, the data transmission time is reduced, and the transmission of large data can be realized.
Referring to fig. 4 and 5, fig. 4 is a flowchart of another embodiment of a method for improving a data transmission rate according to the present application, where the method is applied to a communication system, and the communication system includes at least a first hub 51, a plurality of first communication devices 52, a second hub 53, and a plurality of second communication devices 54, and the method includes:
step 41: the first hub 51 obtains the third data packet from the other device.
The first hub 51 establishes connection with the plurality of first communication devices 52, and the other devices include at least a second hub 53 and a plurality of second communication devices 54, the second hub 53 being connected with the plurality of second communication devices 54; the first hub 51 and the second hub 53 may have a function of intelligent control, in particular, a function of a computer, a mobile terminal, or a hardware board provided with a micro control unit having an input port and an output port of USB, bluetooth, or WIFI for connection.
The first hub 51 and the plurality of first communication devices 52 may establish a connection via bluetooth or a connection line, and the second hub 53 and the plurality of second communication devices 54 may also establish a connection via bluetooth or a connection line.
The second hub 53 sends the third data packet to the first hub 51 through the plurality of second communication devices 54, specifically, the second hub 53 first splits the third data packet into a plurality of fourth data packets, and then sends the plurality of fourth data packets to the plurality of second communication devices 54, respectively, each of the second communication devices 54 sends the received fourth data packet to the first hub 51, and the first hub 51 combines the received plurality of fourth data packets into the third data packet; the transmission rate of the third data packet is a third transmission rate.
For example, the second hub 53 splits the video data packet into a plurality of small video data packets and transmits the small video data packets to the corresponding second communication devices 54, and each second communication device 54 transmits the received small video data packets to the first hub 51, and the first hub 51 combines them to restore the original video data packet.
Step 42: the first hub 51 splits the third data packet into a plurality of fourth data packets.
The first hub 51 is configured to split the received third data packet into a plurality of small fourth data packets, and send the fourth data packets; after receiving the third data packet, the first hub 51 splits the third data packet into a plurality of fourth data packets in order to increase the data transmission rate.
Step 43: the first hub 51 transmits a plurality of fourth data packets to the plurality of first communication devices 52 according to the fourth transmission rate.
The first hub 51 transmits the fourth data packet to the plurality of first communication devices 52 using the fourth transmission rate, and each of the first communication devices 52 may transmit the received fourth data packet to other devices having the functions of receiving the data packet and combining the data packet; wherein the third transmission rate is greater than the fourth transmission rate.
Since the third transmission rate is greater than the fourth transmission rate, the first data packets from the second hub 53 are received by the first hub 51, and the data transmission rate can be further increased.
Unlike the prior art, the present embodiment provides a method for improving the data transmission rate, which uses the first hub 51 to receive the third data packet, then splits the third data packet into a plurality of fourth data packets, and sends the fourth data packets to the corresponding plurality of first communication devices 52.
Referring to fig. 6 and 7, fig. 6 is a flowchart illustrating a method for improving a data transmission rate according to another embodiment of the present application, where the method is applied to a communication system, and the communication system includes at least a first hub 71, a plurality of first communication devices 72, a second hub 73, a plurality of second communication devices 74, a first terminal 75, and a second terminal 76, as shown in fig. 7, and the method includes:
step 61: the first hub 71 obtains the first data packet from the first terminal 75.
The first hub 71 is connected to a plurality of first communication devices 72, the first terminal 75 is connected to the first hub 71, and the first hub 71 and the plurality of first communication devices 72 are connected via a serial bus.
The first hub 71 may comprise a computer, a mobile terminal or a hardware board provided with a micro control unit having an input port and an output port for USB, bluetooth or WIFI, in order to facilitate the connection of the first hub 71 with the plurality of first communication devices 72.
In order to transfer the first data packet transmitted by the first terminal 75 to the second terminal 76, which may be implemented with the first hub 71 and the plurality of first communication devices 72, the first terminal 75 first transmits the first data packet to the first hub 71 using the first transmission rate.
Step 62: the first hub 71 splits the first data packet into a plurality of second data packets.
In order to accelerate the data transmission rate, the first hub 71 splits the received first data packet into a plurality of second data packets; the first communication device 72 may be an intercom, which has the characteristics of long transmission distance and high power, and is easy to implement.
Step 63: the first hub 71 transmits the plurality of second data packets to the plurality of first communication devices 72 according to the second transmission rate.
The first hub 71, after splitting the first data packet into a plurality of second data packets, transmits the plurality of second data packets to the plurality of first communication devices 72, respectively; it will be appreciated that the number of second data packets is less than the number of first communication devices 72.
Step 64: each first communication device 72 sends a second data packet to a corresponding second communication device 74.
In order to enable data transmission between the first terminal 75 and the second terminal 76, each first communication device 72 is connected to one second communication device 74, each first communication device 72 sends second data packets to the corresponding second communication device 74 at a third transmission rate, the number of first communication devices 72 being equal to the number of second communication devices 74.
Step 65: as each second communication device 74 acquires the second data packets, the second hub 73 receives the plurality of second data packets from the plurality of second communication devices 74.
The plurality of second communication devices 74 may be connected to the second hub 73 through a serial bus, and the second communication devices 74 may be interphones, so that in order to obtain a high-rate transmission rate, the plurality of interphones may be arranged by using the advantages of the existing digital interphones, and communicate using their respective frequencies and time slots.
For example, if TETRA (Trans European Trunked Radio, flood cluster radio) interphones are used, the data transmission rate will reach 36kb/s each, and by providing a plurality of TETRA interphones, the data transmission rate can be mentioned higher.
After each second communication device 74 acquires the second data packet, each second communication device 74 sends the received second data packet to the second hub 73.
The second hub 73 may comprise a computer, a mobile terminal or a hardware board provided with a micro control unit having an input port and an output port for USB, bluetooth or WIFI, in order to facilitate the connection of the second hub 73 with the plurality of second communication devices 74.
Step 66: the second hub 73 combines the plurality of second data packets into a first data packet.
To recover the first data packet, the second hub 73 combines the received plurality of second data packets into the first data packet.
Step 67: the second hub 73 transmits the first data packets to the second terminal 76 according to the fourth transmission rate.
The second hub 73 transmits the recovered first data packet to the second terminal 76, thereby realizing data transmission between the first terminal 75 and the second terminal 76.
It can be appreciated that the second terminal 76 may also send the data packet to the first terminal 75 through the second hub 73, the second communication device 74, the first communication device 72 and the first hub 71, so as to implement data interaction between the second terminal 76 and the first terminal 75, and the specific process is similar to that in the above embodiment, and will not be repeated here.
Unlike the prior art, the present embodiment provides a method for improving a data transmission rate, in which a first hub 71 is used to receive a first data packet sent by a first terminal 75, then split the first data packet into a plurality of second data packets, and send the plurality of second data packets to a corresponding plurality of first communication devices 72, and then the first communication devices 72 are used to transmit the second data packets to the corresponding second communication devices 74, each second communication device 74 sends the received second data packets to a second hub 73, and then the second hub 73 combines the received plurality of second data packets to recover the first data packets, and sends the first data packets to a second terminal 76, so as to implement data interaction between the first terminal 75 and the second terminal 76; by utilizing the characteristic that the transmission rates of the first communication device 72 and the second communication device 74 are high, the plurality of first communication devices 72 and the second communication device 74 are respectively combined to transmit data, the data transmission rate is improved, the data transmission time between the first terminal 75 and the second terminal 76 is reduced, and the transmission of large data can be realized.
Referring to fig. 8, fig. 8 is a schematic structural diagram of an embodiment of a storage medium 80 according to the present application, where the storage medium 80 is used to store a computer program 81, and the computer program 81, when executed by a processor, is used to implement the method for improving a data transmission rate in the foregoing embodiment.
The storage medium 80 may be a server, a usb disk, a removable hard disk, a Read-Only Memory (ROM), a random access Memory (RAM, random Access Memory), a magnetic disk, or an optical disk, etc. which may store the program codes.
In the several embodiments provided in the present application, it should be understood that the disclosed method and apparatus may be implemented in other manners. For example, the above-described device embodiments are merely illustrative, e.g., the division of modules or units is merely a logical functional division, and there may be additional divisions when actually implemented, e.g., multiple units or components may be combined or integrated into another system, or some features may be omitted or not performed.
The units described as separate units may or may not be physically separate, and units shown as units may or may not be physical units, may be located in one place, or may be distributed over a plurality of network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the embodiment.
In addition, each functional unit in each embodiment of the present application may be integrated in one processing unit, each unit may exist alone physically, or two or more units may be integrated in one unit. The integrated units may be implemented in hardware or in software functional units.
The foregoing is only illustrative of the present application and is not to be construed as limiting the scope of the application, and all equivalent structures or equivalent flow modifications which may be made by the teachings of the present application and the accompanying drawings or which may be directly or indirectly employed in other related art are within the scope of the application.

Claims (9)

1. A method of increasing a data transmission rate, applied to a communication system including at least a first hub and a plurality of first communication devices, the first hub establishing connections with the plurality of first communication devices, the method of increasing a data transmission rate comprising:
when each first communication device acquires a first data packet, the first hub receives a plurality of first data packets from a plurality of first communication devices, and the transmission rate of the first data packets is a first transmission rate;
the first communication device includes an intercom;
the first hub combines a plurality of the first data packets into a second data packet;
the first hub sends the second data packet to other devices according to a second transmission rate, wherein the second transmission rate is greater than the first transmission rate.
2. The method of increasing a data transmission rate of claim 1, further comprising:
the first hub obtains a third data packet from the other device;
the first hub splits the third data packet into a plurality of fourth data packets;
the first hub transmits a plurality of the fourth data packets to a plurality of the first communication devices according to a fourth transmission rate.
3. The method for increasing a data transmission rate according to claim 2, wherein,
the transmission rate of the third data packet is a third transmission rate, and the third transmission rate is greater than the fourth transmission rate.
4. The method for increasing a data transmission rate according to claim 2, wherein,
the other devices at least comprise a second hub and a plurality of second communication devices, and the second hub is connected with the plurality of second communication devices.
5. The method for increasing a data transmission rate according to claim 4, wherein,
the first hub and the second hub have intelligent control functions.
6. The method for increasing a data transmission rate according to claim 1, wherein,
the first hub and the plurality of first communication devices establish connection through bluetooth or connection lines.
7. A communication system, comprising at least a first hub and a plurality of first communication devices, wherein the first hub establishes a connection with the plurality of first communication devices, each first communication device is configured to obtain a first data packet, the first hub is configured to receive the plurality of first data packets from the plurality of first communication devices, combine the plurality of first data packets into a second data packet, and send the second data packet to other devices according to a second transmission rate, wherein the transmission rate of the first data packet is a first transmission rate, and the second transmission rate is greater than the first transmission rate.
8. The communication system of claim 7, wherein the communication system further comprises a plurality of communication devices,
the other devices at least comprise a second hub and a plurality of second communication devices, and the second hub is connected with the plurality of second communication devices.
9. A storage medium storing a computer program which, when executed by a processor, is adapted to carry out the method of increasing a data transmission rate according to any one of claims 1-6.
CN201910134313.9A 2019-02-22 2019-02-22 Method for improving data transmission rate, communication system and storage medium Active CN111614433B (en)

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CN106327848A (en) * 2016-08-24 2017-01-11 北京航空航天大学 Distributed data acquisition and transmission device for high-resolution multi-mode intelligent sensing device
CN109347491A (en) * 2018-10-16 2019-02-15 京信通信系统(中国)有限公司 Multi-channel data transmitting device, reception device, Transmission system and transmission method

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Publication number Priority date Publication date Assignee Title
US8655441B2 (en) * 2009-04-16 2014-02-18 Massachusetts Institute Of Technology Methods and apparatus for monitoring patients and delivering therapeutic stimuli

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106327848A (en) * 2016-08-24 2017-01-11 北京航空航天大学 Distributed data acquisition and transmission device for high-resolution multi-mode intelligent sensing device
CN109347491A (en) * 2018-10-16 2019-02-15 京信通信系统(中国)有限公司 Multi-channel data transmitting device, reception device, Transmission system and transmission method

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