CN106658597B - Data transmission method, sending device and receiving device - Google Patents
Data transmission method, sending device and receiving device Download PDFInfo
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- 238000004891 communication Methods 0.000 description 5
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- H04W12/00—Security arrangements; Authentication; Protecting privacy or anonymity
- H04W12/03—Protecting confidentiality, e.g. by encryption
- H04W12/033—Protecting confidentiality, e.g. by encryption of the user plane, e.g. user's traffic
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- H04W28/04—Error control
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/005—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission adapting radio receivers, transmitters andtransceivers for operation on two or more bands, i.e. frequency ranges
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
- H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
- H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
- H04L1/1829—Arrangements specially adapted for the receiver end
- H04L1/1858—Transmission or retransmission of more than one copy of acknowledgement message
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Abstract
The embodiment of the invention discloses a data transmission method, which comprises the following steps: receiving data; and transmitting the data through the cooperation of a first transmission channel and a second transmission channel, wherein the first transmission channel is constructed by a first analog baseband and a first radio frequency front end connected with the first analog baseband, the second transmission channel is constructed by a second analog baseband and a second radio frequency front end connected with the second analog baseband, the first analog baseband and the first radio frequency front end work in a first frequency band, and the second analog baseband and the second radio frequency front end work in a second frequency band. The invention ensures the correctness and the real-time property of data transmission through the mutual matching of the first transmission channel and the second transmission channel.
Description
Technical Field
The present invention relates to the field of communications technologies, and in particular, to a data transmission method, a transmitting apparatus, and a receiving apparatus.
Background
With the increasing development of wireless technology, wireless transmission technology is more and more accepted by various industries. At present, wireless transmission, such as WIFI, LTE, and DVB, basically performs data transmission on a channel with a fixed bandwidth on a channel of a certain frequency point in the same frequency band, and once interference occurs, measures are generally taken to jump to another frequency point or to avoid the interference by using a communication protocol. However, in wireless communication using different protocols, if interference occurs on the same channel, only frequency hopping can be adopted to ensure data transmission, but the real-time performance of frequency hopping cannot be ensured. Particularly, under the condition of real-time video and audio digital transmission, problems of image mosaic, data errors and the like can be caused, the influence on user experience is extremely high, and the data judgment and the data combination are realized in an application layer, so that more resources are wasted, and the system delay is larger. Meanwhile, the application scenarios of the product are limited, for example, in a specific situation, if one of the frequency bands is interfered seriously or is prohibited to be used for a special reason, the wireless device based on the frequency band cannot be used.
Disclosure of Invention
The technical problem mainly solved by the embodiments of the present invention is to provide a data transmission method, a transmitting device and a receiving device, which can solve the problems of large delay of switching channels when data is transmitted in the same frequency band and data delay caused by data merging in an application layer.
In order to solve the above technical problem, one technical solution adopted by the embodiment of the present invention is: provided is a data transmission method, including: receiving data; the data are transmitted through the cooperation of a first transmission channel and a second transmission channel, wherein the first transmission channel is constructed by a first analog baseband and a first radio frequency front end connected with the first analog baseband, the second transmission channel is constructed by a second analog baseband and a second radio frequency front end connected with the second analog baseband, the first analog baseband and the first radio frequency front end work in a first frequency band, and the second analog baseband and the second radio frequency front end work in a second frequency band.
Wherein, sending transmission data through the first transmission channel and the second transmission channel in a matching manner comprises: copying the data to generate a data copy; data is transmitted over a first transmission channel and a copy of the data is transmitted over a second transmission channel.
The data transmission through the first transmission channel and the second transmission channel in a matched mode comprises the following steps: transmitting data through a first transmission channel; detecting whether an interference signal interfering with the first transmission channel exists in the transmission space through the second transmission channel; if the interference signal exists and the packet loss rate of the data received by the data transmission channel is greater than a preset value, switching the data from the first transmission channel to the second transmission channel for transmission, and sending a determination signal for determining the data transmission channel to the receiving device; if there is no interference signal, the data transmission from the first transmission channel is continued.
The data comprises first segmentation data and second segmentation data, wherein the second segmentation data is core content of the data, the first segmentation data is other data except the core content of the data, and the capacity of the first segmentation data is larger than that of the second segmentation data; the data transmission through the first transmission channel and the second transmission channel comprises the following steps: encrypting the second transmission data packet according to a preset encryption algorithm; the first split data is transmitted through a first transmission channel, and the second split data is transmitted through a second transmission channel.
In order to solve the above technical problem, another technical solution adopted by the embodiment of the present invention is: provided is a data transmission method, including: receiving data through a first transmission channel and a second transmission channel, wherein the first transmission channel is constructed by a first analog baseband and a first radio frequency front end connected with the first analog baseband, and the second transmission channel is constructed by a second analog baseband and a second radio frequency front end connected with the second analog baseband, wherein the first analog baseband and the first radio frequency front end work in a first frequency band, and the second analog baseband and the second radio frequency front end work in a second frequency band; and restoring complete data according to the received data.
Wherein, according to the received data, the grouping of the complete data comprises: analyzing the data and judging whether the data is correct or not; if the data is correct, determining the data received for the first time; and processing the data received for the first time.
Wherein the step of receiving data via the first transmission channel and the second transmission channel comprises: receiving a determination signal through the first transmission channel or the second transmission channel, wherein the determination signal is used for determining one channel from the first transmission channel and the second transmission channel as a data transmission channel; receiving data on the determined data transmission channel.
The data transmission method further comprises the following steps: detecting whether there is an interference signal interfering with a data transmission channel using a transmission channel that is not transmission data among the first transmission channel and the second transmission channel; if the interference signal exists and the packet loss rate of the data received by the data transmission channel is larger than the preset value, the data transmission channel is determined again, the determination signal is sent to the sending device, and the data received on the determined data transmission channel is returned.
The data transmission method further comprises the following steps: decrypting the data received from the second transmission channel according to a preset decryption algorithm, and restoring complete data according to the received data comprises: the decrypted data and the data received from the first transmission channel are combined into complete data.
To solve the above-described problem, an embodiment of the present invention provides a transmission apparatus, including: the digital baseband, the first analog baseband, the first radio frequency front end, the second analog baseband and the second radio frequency front end, wherein the first analog baseband is respectively connected with the digital baseband and the first radio frequency front end, the second analog baseband is respectively connected with the digital baseband and the second radio frequency front end, the first analog baseband and the first radio frequency front end work in a first frequency band, the second analog baseband and the second radio frequency front end work in a second frequency band, the first analog baseband and the first radio frequency front end construct a first transmission channel, and the second analog baseband and the second radio frequency front end construct a second transmission channel; the digital baseband is used for receiving data and converting the data into a digital signal; the first transmission channel and the second transmission channel are matched to convert the digital signals into analog signals, and the analog signals are modulated to corresponding frequency bands to be transmitted.
The digital signals are two groups, namely a first digital signal and a second digital signal, wherein the first digital signal is generated according to data, and the second digital signal is generated according to a copy of the data; the first transmission channel and the second transmission channel are matched to convert the digital signals into analog signals, and the analog signals are modulated to corresponding frequency bands to be transmitted: the first transmission channel is used for converting the first digital signal into an analog signal and modulating the analog signal obtained by converting the first digital signal to a first frequency band for transmission; the first transmission channel is used for converting the second digital signal into an analog signal and modulating the analog signal converted by the second digital signal to a second frequency band for transmission.
Wherein, first transmission channel and second transmission channel cooperation are converted digital signal into analog signal to modulate analog signal to corresponding frequency channel transmission and include: the first transmission channel is used for converting a digital signal into an analog signal, and modulating the analog signal obtained by converting the digital signal to a first frequency band for transmission; the second transmission channel is used for detecting whether an interference signal interfering the first transmission channel exists in the transmission space, if the interference signal exists, and when the packet loss rate of data received by the data transmission channel is greater than a preset value, the data is switched from the first transmission channel to the second transmission channel for transmission, and a determination signal for determining that the second transmission channel is the data transmission channel is sent to the receiving device.
The digital signals are divided into two groups, namely a first digital signal and a second digital signal, wherein the second digital signal is generated according to the content of the core in the data, and the second digital signal is generated according to the content of the core in the data except the content of the core; the first transmission channel and the second transmission channel are matched to convert the digital signals into analog signals, and the analog signals are modulated to corresponding frequency bands to be transmitted, wherein the method comprises the following steps: the first transmission channel is used for converting the first digital signal into an analog signal and modulating the analog signal obtained by converting the first digital signal to a first frequency band for transmission; the first transmission channel is used for converting the second digital signal into an analog signal and modulating the analog signal converted by the second digital signal to a second frequency band for transmission.
To solve the above technical problem, an embodiment of the present invention provides a receiving apparatus, including: the digital baseband, the first analog baseband, the first radio frequency front end, the second analog baseband and the second radio frequency front end, wherein the first analog baseband is respectively connected with the digital baseband and the first radio frequency front end, the second analog baseband is respectively connected with the digital baseband and the second radio frequency front end, the first analog baseband and the first radio frequency front end work in a first frequency band, the second analog baseband and the second radio frequency front end work in a second frequency band, the first analog baseband and the first radio frequency front end construct a first transmission channel, and the second analog baseband and the second radio frequency front end construct a second transmission channel; the first transmission channel and the second transmission channel are used for receiving analog signals and converting the analog signals into digital signals; and the digital baseband is used for restoring complete data according to the analog signal.
Wherein the digital baseband is specifically configured to: analyzing the analog signals received by the first transmission channel and the second transmission channel as data, and judging whether the data is correct; if the data is correct, determining the data received for the first time; and processing the data received for the first time.
Wherein the digital baseband is configured to: receiving a determination signal, wherein the determination signal is used for determining one channel from a first transmission channel and a second transmission channel as a data transmission channel; according to the determination signal, a data transmission channel for transmitting data is determined, and the complete data is generated according to the analog signal received by the data transmission channel.
The digital baseband is further used for detecting whether an interference signal interfering with the data transmission channel exists through a transmission channel which is not used as transmission data in the first transmission channel and the second transmission channel; if the interference signal exists, and when the packet loss rate of the analog signal received by the data transmission channel is larger than a preset value, the data transmission channel is determined again, the determined signal is sent to the sending device, and the analog signal is received on the determined data transmission channel in a returning mode.
The data baseband generates two groups of data from two groups of analog signals received by the first transmission channel and the second transmission channel, and combines the two groups of data into complete data.
The beneficial effects of the embodiment of the invention are as follows: different from the prior art, the invention constructs the first and the second transmission channels through the first and the second analog baseband and the first and the second radio frequency front ends in the sending device, transmits data through the cooperation between the first and the second transmission channels, constructs the first and the second transmission channels through the first and the second analog baseband and the first and the second radio frequency front ends in the receiving device, receives the data through the first and the second transmission channels and restores the complete data, transmits and receives the data through the analog baseband and the radio frequency front end in the physical layer, and combines the data in the physical layer, thereby ensuring the small delay of data transmission, improving the efficiency of data transmission, ensuring the correctness of data transmission by utilizing the mutual cooperation of the two transmission channels, realizing the transmission of real-time data with the lowest redundancy design, and improving the coexistence degree of the data in space due to the adoption of the two transmission channels, there is no application scenario restriction.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required to be used in the embodiments of the present application will be briefly described below. It is obvious that the drawings described below are only some embodiments of the application, and that for a person skilled in the art, other drawings can be derived from them without inventive effort.
FIG. 1 is a flow chart of a first embodiment of a data transmission method of the present invention;
FIG. 2 is a first detailed flowchart of a first embodiment of a data transmission method of the present invention;
FIG. 3 is a second detailed flowchart of the first embodiment of a data transmission method of the present invention;
FIG. 4 is a third detailed flowchart of the first embodiment of a data transmission method according to the present invention;
FIG. 5 is a flow chart of a second embodiment of a data transmission method of the present invention;
FIG. 6 is a first detailed flowchart of a first embodiment of a data transmission method of the present invention;
FIG. 7 is a second detailed flowchart of the first embodiment of a data transmission method of the present invention;
FIG. 8 is a third detailed flowchart of the first embodiment of a data transmission method according to the present invention;
FIG. 9 is a schematic diagram of a first embodiment of a transmitting apparatus of the present invention;
fig. 10 is a schematic diagram of a first embodiment of a receiving apparatus of the present invention.
Detailed Description
Referring to fig. 1, an embodiment of a data transmission method according to the present invention includes:
step 101: receiving data;
the data enters the digital baseband device in the transmitting device, and the digital baseband converts the data into digital signals and transmits the digital signals to the analog baseband.
Step 102: the data are transmitted through a first transmission channel and a second transmission channel in a matched mode, wherein the first transmission channel is constructed by a first analog baseband and a first radio frequency front end connected with the first analog baseband, the second transmission channel is constructed by a second analog baseband and a second radio frequency front end connected with the second analog baseband, the first analog baseband and the first radio frequency front end work in a first frequency band, the second analog baseband and the second radio frequency front end work in a second frequency band, and the first frequency band is different from the second frequency band;
the first analog baseband, the first rf front end, the second analog baseband, and the second rf front end are transmission devices in different frequency bands in the transmitter, the analog baseband converts digital signals into analog signals, and the frequency bands of the first transmission channel and the second transmission channel used for transmitting data are different, for example: the first transport channel is 2.4G and the second transport channel is 900M.
Specifically, referring to fig. 2, step 102 further includes:
step 1021: copying the data to generate a data copy;
the data content is copied to generate a copy, but in order to adapt to different transmission channels, the data content and the copy can be encoded differently, and it should be noted that the encoding mode does not cause a change in the data content.
Step 1022: transmitting the data over the first transmission channel and the data copy over the second transmission channel;
the first transmission channel and the second transmission channel are independent, so that the transmission data and the data copy do not have any influence on each other, the coexistence degree of the data in the space is improved, and the limitation of an application scene is avoided.
Further, referring to fig. 3, step 102 further includes:
step 1023: transmitting the data through the first transmission channel;
the first transmission channel is used for transmitting data and performing single-frequency-band transmission.
Step 1024: detecting whether an interference signal which interferes with the first transmission channel exists in a transmission space through the second transmission channel;
since the data is transmitted only on the first transmission channel, in order to prevent the data from being damaged, the second transmission channel, i.e. the second analog baseband and the second radio frequency front end of the transmitting device, detects whether an interference signal interfering with the first transmission channel exists in the transmission space, so that the integrity and the real-time performance of the data are ensured.
Step 1025: if the interference signal exists and the packet loss rate of the data received by the data transmission channel is greater than a preset value, switching the data from the first transmission channel to the second transmission channel for transmission, and sending a determination signal for determining the data transmission channel to a receiving device;
the packet loss rate is preset, for example, the preset packet loss rate is 3%, and if the packet loss rate reaches 3% or is greater than 3%, the transmission channel for transmitting the data is switched. The command of switching the channel and the sending of the determination signal to the receiving device are executed by the second analog baseband and the second radio frequency front end of the sending device, so that the receiving device is favorable for not delaying receiving due to channel switching when receiving data, and the real-time performance of data transmission is ensured.
It is worth mentioning that if the data is corrupted by an interfering signal, the data is discarded, while the second transmission channel requests the sending device to resend the data, transmits the data through the second transmission channel, and notifies the receiving device to send information for switching channels.
Step 1026: if no interference signal exists, continuing to transmit the data through the first transmission channel;
during normal transmission of data, the second transmission channel is detected until the data is received by the receiving device.
Further, referring to fig. 4, step 102 further includes:
step 1027: encrypting the second segmentation data according to a preset encryption algorithm;
the data comprises first division data and second division data, wherein the second division data is core content of the data, the first division data is other data except the core content of the data, and the capacity of the first division data is larger than that of the second division data.
The encryption algorithm can be preset in various forms, and the difficulty level of the cipher set according to different importance levels of the core content can be different, for example: the password which can be set by the data which is not particularly important is a number plus an English letter, and the password which can be set by the data which is important is a number plus an English letter plus a special symbol; of course, the length of the password may be set to a fixed value.
Step 1028: transmitting the first divided data through the first transmission channel, and transmitting the encrypted second divided data through the second transmission channel.
The frequency band of the first transmission channel is larger than that of the second transmission channel, the first transmission channel is used for transmitting first division data with large capacity, the second transmission channel is used for transmitting second division data with small capacity, and the two transmission channels are independent from each other, so that the first division data and the second division data are not influenced by each other.
In the embodiment of the invention, the first and second transmission channels are constructed by the first and second analog base bands and the first and second radio frequency front ends in the sending device, data is transmitted by the cooperation between the first and second transmission channels, the data is sent by the analog base band and the radio frequency front end in the physical layer, the data transmission accuracy is ensured by utilizing the mutual cooperation of the two transmission channels to transmit the data, the transmission of real-time data is realized by the lowest redundancy design, and the data space coexistence degree is improved by adopting the two transmission channels to transmit the data without using the limitation of a scene.
Referring to fig. 5, fig. 5 is a flowchart illustrating a data transmission method according to a second embodiment of the present invention, the data transmission method includes:
step 201: receiving data through a first transmission channel and a second transmission channel, wherein the first transmission channel is constructed by a first analog baseband and a first radio frequency front end connected with the first analog baseband, and the second transmission channel is constructed by a second analog baseband and a second radio frequency front end connected with the second analog baseband, wherein the first analog baseband and the first radio frequency front end work in a first frequency band, the second analog baseband and the second radio frequency front end work in a second frequency band, and the first frequency band is different from the second frequency band;
the first analog baseband, the first rf front end, the second analog baseband and the second rf front end are transmission devices of different frequency bands in the receiving apparatus, the first analog baseband and the first rf front end are in one frequency band, the second analog baseband and the second rf front end are in one frequency band, and the frequency bands of the first transmission channel and the second transmission channel for transmitting data are also different, for example: the first transport channel is 2.4G and the second transport channel is 900M.
Step 202: restoring complete data according to the received data;
since the data transmitted by the transmitting device is transmitted in three ways, the data received by the receiving device is also in different forms, and it is necessary to self-assemble complete data, please refer to fig. 6, where step 202 includes:
step 2021: analyzing the data and judging whether the data is correct or not;
the data analysis is also performed according to a preset analysis algorithm, the preset analysis algorithm corresponds to a preset encapsulation algorithm, and various ways of checking whether the first transmission data packet is correct may be used, for example: and setting a check code in the first transmission data packet, checking whether the first transmission data packet is correct through the check code, or judging whether the first transmission data packet is correct by judging whether the first transmission data packet contains a head-to-tail encapsulation identifier.
Step 2022: if the data is correct, determining the data received for the first time;
in short, a data content is transmitted to the receiving device twice through the first transmission channel and the second transmission channel respectively, but the receiving device may receive data from the first transmission channel and the second transmission channel in sequence.
It should be noted that if the first received data is incorrect, the first received data is lost, and the data of another transmission channel is waited for and then analyzed.
Step 2023: processing the data received for the first time;
and judging whether the data storage space stores data with the same content as the first-time received data, if so, storing the data content into the storage space, and otherwise, discarding the data.
Further, referring to fig. 7, step 201 further includes:
step 2011: receiving a determination signal through a first transmission channel or a second transmission channel, wherein the determination signal is used for determining one channel from the first transmission channel and the second transmission channel as a data transmission channel;
because the second transmission channel of the sending end carries out space detection, if a signal interfering the first transmission channel is detected, the channel for data transmission is switched from the first transmission channel to the second transmission channel, at the moment, the sending end sends a determined signal to the receiving end, so that the second transmission channel receives data, if the second transmission channel of the sending end does not detect the interfering signal, the data is normally transmitted by the first transmission channel, so that the receiving end receives the data by the first transmission channel.
Step 2012: receiving data on the determined data transmission channel;
step 2013: detecting an interference signal of a data transmission channel for transmitting data using a transmission channel which is not the transmission data among the first transmission channel and the second transmission channel;
one of the transmission channels is used for transmitting data, and the other transmission channel which does not transmit data detects whether signals interfering with the transmission channel transmitting data exist in the whole space.
Step 2014: if the interference signal exists and the packet loss rate of the data received by the data transmission channel is greater than a preset value, re-determining the data transmission channel, sending a determination signal to a sending device, and returning to receive the data on the re-determined data transmission channel;
the packet loss rate is preset, for example, the preset packet loss rate is 3%, and if the packet loss rate reaches 3% or is greater than 3%, it indicates that the data is incomplete due to the interference signal, the receiving device requests the sending device to resend the data and switch channels, and the switching of the transmission channels is realized in the physical layer, which is favorable for the quality of data transmission and improves the speed of data transmission.
Further, referring to fig. 8, a data transmission method according to the present invention further includes:
step 203: decrypting the data received from the second transmission channel according to a preset decryption algorithm;
the preset decryption algorithm and the preset encryption algorithm are corresponding.
Further, step 202 further comprises:
step 2024: combining the decrypted data and the data received from the first transmission channel into complete data;
the combination of the data obtained by decryption and the data received from the first transmission channel is realized in a physical implementation, so that the data transmitted to the application layer is unique and correct, and the efficient and timely data transmission is realized.
In the embodiment of the invention, the first and second transmission channels are constructed by the first and second analog baseband and the first and second radio frequency front ends in the receiving device, the first and second transmission channels receive data and restore complete data, the data are received by the analog baseband and the radio frequency front end in the physical layer, and the data are combined in the physical layer while the transmission channels are switched in the physical layer, so that the delay of data transmission is ensured to be small, and the efficiency of data transmission is improved.
The present invention further provides an embodiment of a transmitting apparatus, referring to fig. 9, the transmitting apparatus 300 includes: a digital baseband 302, a first analog baseband 303, a first radio frequency front end 305, a second analog baseband 304, and a second radio frequency front end 306. The first analog baseband 303 is connected with the digital baseband 302 and the first radio frequency front end 305 respectively, the second analog baseband 304 is connected with the digital baseband 302 and the second radio frequency front end 306 respectively, the first analog baseband 303 and the first radio frequency front end 305 work in a first frequency band, the second analog baseband 304 and the second radio frequency front end 306 work in a second frequency band, the first frequency band is different from the second frequency band, the first analog baseband 303 and the first radio frequency front end 305 construct a first transmission channel, and the second analog baseband 304 and the second radio frequency front end 306 construct a second transmission channel; the digital baseband 302 is used for receiving data and converting the data into digital signals; and the first transmission channel and the second transmission channel are matched to convert the digital signals into analog signals, and modulate the analog signals to corresponding frequency bands for transmission.
Further, the digital signals are two groups, namely a first digital signal and a second digital signal, wherein the first digital signal is generated according to data transmitted by the external interface 301, and the second digital signal is generated according to a copy of the data; the first transmission channel and the second transmission channel are matched to convert the digital signals into analog signals, and the analog signals are modulated to corresponding frequency bands to be transmitted; the first transmission channel is used for converting a first digital signal into an analog signal, and modulating the analog signal obtained by converting the first digital signal to a first frequency band for transmission; the first transmission channel is used for converting a second digital signal into an analog signal, and modulating the analog signal obtained by converting the second digital signal to a second frequency band for transmission.
Further, the first transmission channel and the second transmission channel cooperate to convert the digital signal into an analog signal, and modulate the analog signal to a corresponding frequency band for transmission includes: the first transmission channel is used for converting a digital signal into an analog signal, and modulating the analog signal obtained by converting the digital signal to a first frequency band for transmission; the second transmission channel is used for detecting whether an interference signal interfering the first transmission channel exists in a transmission space, if the interference signal exists, and when the packet loss rate of the data received by the data transmission channel is greater than a preset value, the data is switched from the first transmission channel to the second transmission channel for transmission, and a determination signal for determining that the second transmission channel is the data transmission channel is sent to a receiving device.
Further, the digital signals are two groups, namely a first digital signal and a second digital signal, wherein the second digital signal is generated according to the content of the data center core, and the second digital signal is generated according to other contents except the content of the data center core.
The first transmission channel and the second transmission channel are matched to convert the digital signal into an analog signal, and the analog signal is modulated to a corresponding frequency band to be transmitted, wherein the method comprises the following steps:
the first transmission channel is used for converting a first digital signal into an analog signal, and modulating the analog signal obtained by converting the first digital signal to a first frequency band for transmission; the first transmission channel is used for converting a second digital signal into an analog signal, and modulating the analog signal obtained by converting the second digital signal to a second frequency band for transmission.
The transmitting device of the embodiments of the present invention exists in various forms, including but not limited to:
(1) mobile communication devices, which are characterized by mobile communication capabilities and are primarily targeted at providing voice and data communications. Such terminals include smart phones (e.g., iphones), multimedia phones, functional phones, and low-end phones, among others.
(2) The ultra-mobile personal computer equipment belongs to the category of personal computers, has calculation and processing functions and generally has the characteristic of mobile internet access. Such terminals include PDA, MID, and UMPC devices, such as ipads.
(3) Portable entertainment devices such devices may display and play multimedia content. Such devices include audio and video players (e.g., ipods), handheld game consoles, electronic books, as well as smart toys and portable car navigation devices.
(4) The server is similar to a general computer architecture, but has higher requirements on processing capability, stability, reliability, safety, expandability, manageability and the like because of the need of providing highly reliable services.
(5) And other electronic devices with data interaction functions.
The above-described embodiments of the apparatus are merely illustrative, and the units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of the present embodiment.
In the embodiment of the invention, the first and second transmission channels are constructed by the first and second analog base bands and the first and second radio frequency front ends in the sending device, data is transmitted by the cooperation between the first and second transmission channels, the data is sent by the analog base band and the radio frequency front end in the physical layer, the data transmission accuracy is ensured by utilizing the mutual cooperation of the two transmission channels to transmit the data, the transmission of real-time data is realized by the lowest redundancy design, and the data space coexistence degree is improved by adopting the two transmission channels to transmit the data without using the limitation of a scene.
Referring to fig. 10, the receiving apparatus 400 according to another embodiment of the present invention includes: the digital baseband 405, the first analog baseband 403, the first radio frequency front end 401, the second analog baseband 404 and the second radio frequency front end 402, wherein the first analog baseband 403 is respectively connected with the digital baseband 405 and the first radio frequency front end 402, the second analog baseband 404 is respectively connected with the digital baseband 405 and the second radio frequency front end 402, the first analog baseband 403 and the first radio frequency front end 401 work in a first frequency band, the second analog baseband 404 and the second radio frequency front end 402 work in a second frequency band, the first frequency band is different from the second frequency band, the first analog baseband 403 and the first radio frequency front end 401 construct a first transmission channel, and the second analog baseband 404 and the second radio frequency front end 402 construct a second transmission channel; the first transmission channel and the second transmission channel are used for receiving analog signals and converting the analog signals into digital signals; the digital baseband 405 is used to convert the digital signal into data.
Further, the digital baseband 405 converts the digital signal into data and analyzes the data, determines whether the data is correct, determines the data received for the first time if the data is correct, and processes the data received for the first time; if the data is incorrect, the data is discarded, and retransmission is requested to the transmitting device and the transmission channel is switched.
The digital baseband 405 is in the physical layer, and by implementing the judgment of the data in the physical layer, processing in the application layer is not required, so that the data transmitted from the digital baseband to the application layer is ensured to be unique and correct, thereby reducing the time delay of the system.
Further, the first transmission channel and the second transmission channel are used for receiving analog signals and converting the analog signals into digital signals, and the method comprises the following steps: receiving a determination signal through a first transmission channel or a second transmission channel, wherein the determination signal is used for determining one channel from the first transmission channel and the second transmission channel as a data transmission channel; and receiving and processing an analog signal on the determined data transmission channel.
Detecting an interference signal of a data transmission channel for transmitting data by using the first transmission channel and the second transmission channel as the transmission channel for transmitting data; if the interference signal exists and the packet loss rate of the analog signal received by the data transmission channel is judged to be greater than the preset value according to the analog signal received by the data transmission channel, the digital baseband requires the transmission channel to re-determine the data transmission channel, sends a determination signal to a sending device, and returns to receive the analog signal on the determined data transmission channel.
It is worth to be noted that, the interference signal is detected through the analog baseband of the physical layer, and the switching of the transmission channel is realized in the physical layer, so that the quality of data transmission is improved, and the signal is ensured not to be interfered.
Further, the data baseband 405 combines the two sets of received data, i.e., the first divided data and the second divided data, into complete data.
It is worth to be noted that the combination of the two sets of received data into complete data is realized on a physical layer, and the data does not need to be merged on an application layer, so that the data transmitted from the digital baseband to the application layer is unique and correct, the system time delay is reduced, and the efficient and timely data transmission is realized.
The receiving device of the embodiment of the present invention exists in various forms, including but not limited to:
(1) mobile communication devices, which are characterized by mobile communication capabilities and are primarily targeted at providing voice and data communications. Such terminals include smart phones (e.g., iphones), multimedia phones, functional phones, and low-end phones, among others.
(2) The ultra-mobile personal computer equipment belongs to the category of personal computers, has calculation and processing functions and generally has the characteristic of mobile internet access. Such terminals include PDA, MID, and UMPC devices, such as ipads.
(3) Portable entertainment devices such devices may display and play multimedia content. Such devices include audio and video players (e.g., ipods), handheld game consoles, electronic books, as well as smart toys and portable car navigation devices.
(4) The server is similar to a general computer architecture, but has higher requirements on processing capability, stability, reliability, safety, expandability, manageability and the like because of the need of providing highly reliable services.
(5) And other electronic devices with data interaction functions.
The above-described embodiments of the apparatus are merely illustrative, and the units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of the present embodiment.
In the embodiment of the invention, the first and second transmission channels are constructed by the first and second analog baseband and the first and second radio frequency front ends in the receiving device, the first and second transmission channels receive data and restore complete data, the data are received by the analog baseband and the radio frequency front end in the physical layer, and the data are combined in the physical layer while the transmission channels are switched in the physical layer, so that the delay of data transmission is ensured to be small, and the efficiency of data transmission is improved.
The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes performed by the present specification and drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (4)
1. A method of data transmission, comprising:
receiving data;
the data are transmitted through a first transmission channel and a second transmission channel in a matched mode, wherein the first transmission channel is constructed by a first analog baseband and a first radio frequency front end connected with the first analog baseband, the second transmission channel is constructed by a second analog baseband and a second radio frequency front end connected with the second analog baseband, the first analog baseband and the first radio frequency front end work in a first frequency band, and the second analog baseband and the second radio frequency front end work in a second frequency band;
the transmitting the data through the first transmission channel and the second transmission channel in a matching manner comprises:
transmitting the data through the first transmission channel;
detecting whether an interference signal which interferes with the first transmission channel exists in a transmission space through the second transmission channel;
if the interference signal exists and the packet loss rate of the data received by the first transmission channel is greater than a preset value, switching the data from the first transmission channel to the second transmission channel for transmission, and sending a determination signal for determining a data transmission channel to a receiving device;
and if no interference signal exists, continuing to transmit the data by the first transmission channel.
2. A method of data transmission, comprising:
receiving data through a first transmission channel and a second transmission channel, wherein the first transmission channel is constructed by a first analog baseband and a first radio frequency front end connected with the first analog baseband, and the second transmission channel is constructed by a second analog baseband and a second radio frequency front end connected with the second analog baseband, wherein the first analog baseband and the first radio frequency front end work in a first frequency band, and the second analog baseband and the second radio frequency front end work in a second frequency band;
detecting whether there is an interference signal interfering with a data transmission channel using a transmission channel that is not transmission data among the first transmission channel and the second transmission channel;
if the interference signal exists and the packet loss rate of the data received by the data transmission channel is greater than a preset value, re-determining the data transmission channel, sending a determination signal to a sending device, and returning to receive the data on the re-determined data transmission channel;
and restoring complete data according to the received data.
3. A transmitting apparatus, comprising: the digital baseband, the first analog baseband, the first radio frequency front end, the second analog baseband and the second radio frequency front end, wherein the first analog baseband is respectively connected with the digital baseband and the first radio frequency front end, the second analog baseband is respectively connected with the digital baseband and the second radio frequency front end, the first analog baseband and the first radio frequency front end work in a first frequency band, the second analog baseband and the second radio frequency front end work in a second frequency band, the first analog baseband and the first radio frequency front end construct a first transmission channel, and the second analog baseband and the second radio frequency front end construct a second transmission channel;
the digital baseband is used for receiving data and converting the data into a digital signal;
the first transmission channel and the second transmission channel are matched to convert the digital signals into analog signals, and the analog signals are modulated to corresponding frequency bands to be transmitted;
the first transmission channel and the second transmission channel are matched to convert the digital signals into analog signals, and the analog signals are modulated to corresponding frequency bands to be transmitted, wherein the method comprises the following steps:
the first transmission channel is used for converting a digital signal into an analog signal, and modulating the analog signal obtained by converting the digital signal to a first frequency band for transmission;
the second transmission channel is used for detecting whether an interference signal interfering the first transmission channel exists in a transmission space, if the interference signal exists, and when the packet loss rate of data received by the first transmission channel is greater than a preset value, the data is switched from the first transmission channel to the second transmission channel for transmission, and a determination signal for determining that the second transmission channel is a data transmission channel is sent to a receiving device.
4. A receiving apparatus, comprising: the digital baseband, the first analog baseband, the first radio frequency front end, the second analog baseband and the second radio frequency front end, wherein the first analog baseband is respectively connected with the digital baseband and the first radio frequency front end, the second analog baseband is respectively connected with the digital baseband and the second radio frequency front end, the first analog baseband and the first radio frequency front end work in a first frequency band, the second analog baseband and the second radio frequency front end work in a second frequency band, the first analog baseband and the first radio frequency front end construct a first transmission channel, and the second analog baseband and the second radio frequency front end construct a second transmission channel;
the first transmission channel and the second transmission channel are used for receiving analog signals;
the digital baseband is used for restoring complete data according to the analog signal;
the digital baseband is also used for detecting whether an interference signal interfering with the data transmission channel exists through the transmission channel which is not used as transmission data in the first transmission channel and the second transmission channel;
if the interference signal exists and the packet loss rate of the data transmission channel for receiving the analog signal is larger than the preset value, the data transmission channel is determined again, the determined signal is sent to the sending device, and the analog signal is received on the determined data transmission channel in a returning mode.
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| CN201610891431.0A CN106658597B (en) | 2016-10-12 | 2016-10-12 | Data transmission method, sending device and receiving device |
| PCT/CN2017/096899 WO2018068570A1 (en) | 2016-10-12 | 2017-08-10 | Data transmission method and transmitting apparatus and receiving apparatus |
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| CN201610891431.0A CN106658597B (en) | 2016-10-12 | 2016-10-12 | Data transmission method, sending device and receiving device |
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| CN106658597B (en) * | 2016-10-12 | 2020-03-20 | 深圳市道通智能航空技术有限公司 | Data transmission method, sending device and receiving device |
| CN109862027A (en) * | 2019-03-01 | 2019-06-07 | 中国联合网络通信集团有限公司 | Data transmission method for uplink, data receiver method and equipment, data transmission system |
| CN112085939A (en) * | 2020-09-09 | 2020-12-15 | 广州伽年科技有限公司 | Internet data acquisition information transmission device of being convenient for |
| CN112702081B (en) * | 2020-12-29 | 2023-05-30 | 杭州当贝网络科技有限公司 | Frequency hopping audio transmission method, device, equipment and system based on 2.4G |
| CN115051735A (en) * | 2022-06-08 | 2022-09-13 | 重庆航天新世纪卫星应用技术有限责任公司 | MIMO technology-based wireless data link terminal and communication method |
| CN117478175B (en) * | 2023-10-25 | 2024-04-30 | 中通服网盈科技有限公司 | Power communication transmission optimization system and operation method |
| CN117835350A (en) * | 2024-03-01 | 2024-04-05 | 武汉昊一源科技有限公司 | Channel switching method, device, computer program product and storage medium |
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| CN101340217A (en) * | 2008-08-29 | 2009-01-07 | 北京天碁科技有限公司 | Diversity receiving apparatus and method for special carrier TD-MBMS |
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