CN117320033A - High-fidelity multimedia communication system based on 5G customized network high-precision positioning - Google Patents
High-fidelity multimedia communication system based on 5G customized network high-precision positioning Download PDFInfo
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W24/00—Supervisory, monitoring or testing arrangements
- H04W24/02—Arrangements for optimising operational condition
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L43/00—Arrangements for monitoring or testing data switching networks
- H04L43/08—Monitoring or testing based on specific metrics, e.g. QoS, energy consumption or environmental parameters
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L43/00—Arrangements for monitoring or testing data switching networks
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- H04W4/02—Services making use of location information
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- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/06—Selective distribution of broadcast services, e.g. multimedia broadcast multicast service [MBMS]; Services to user groups; One-way selective calling services
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- H04W64/00—Locating users or terminals or network equipment for network management purposes, e.g. mobility management
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Abstract
The invention discloses a high-fidelity multimedia communication system based on 5G customized network high-precision positioning, which can provide location service and high-fidelity communication, and the transmission delay and the transmission quality between transmission units are monitored in real time through an MEC controller, and the optimal data channel of communication data is adjusted in real time, so that the multimedia communication efficiency and quality are improved.
Description
Technical Field
The invention belongs to the technical field of communication, and particularly relates to a high-fidelity multimedia communication system based on high-precision positioning of a 5G customized network.
Background
The existing trunking communication in the market is based on the intercom communication in the network of an operator or the UV frequency band, and the intercom communication cannot be used in the safety isolation environment of the customized network, and cannot be integrated with the safety of the existing service system. The latter cannot meet the requirement of digitization on network bandwidth. At present, each large operator promotes 5G message service, but the 5G message architecture of the operator is complex, and the voice communication and the multimedia information fusion cannot be simultaneously realized.
The multimedia communication market is in need of a high-efficiency real-time communication service meeting the requirements of high reliability, low delay and the like of industrial safety production.
The above information disclosed in this background section is only for enhancement of understanding of the background section of the application and therefore it may not form the prior art that is already known to those of ordinary skill in the art.
Disclosure of Invention
Aiming at the problems in the prior art, the invention provides a high-fidelity multimedia communication system based on high-precision positioning of a 5G customized network, which solves the technical problems that the 5G message architecture of the existing operators is complex and the requirements of high reliability and low delay of industrial safety production cannot be met.
In order to achieve the aim of the invention, the invention is realized by adopting the following technical scheme:
a high-fidelity multimedia communication system based on 5G customized web high-precision positioning, the system comprising:
the transmission units comprise a mobile terminal transmission unit positioned at a mobile terminal, a base station transmission unit positioned at a base station and a 5G customized network data transmission unit positioned at MEC equipment;
a mobile terminal, comprising: the system comprises a high-precision positioning module, a trunking communication module and a mobile terminal transmission unit;
a MEC apparatus, comprising: the system comprises a high-precision positioning server, a high-fidelity multimedia communication server, a 5G customized network data transmission unit and an MEC controller;
the high-precision positioning module is used for determining the position information of the mobile terminal in real time according to the high-precision positioning server and the satellite;
the MEC controller monitors the transmission delay and the transmission quality between the transmission units in real time; generating optimal data channels of all transmission units and the MEC controller in real time according to the transmission delay, the transmission quality and the position information of the transmission units, and transmitting the optimal data channels to the corresponding transmission units;
the mobile terminal sends communication information to the high-fidelity multimedia communication server according to the optimal data channel corresponding to the transmission unit to the MEC controller, the MEC controller determines information of the target mobile terminal according to the communication information, and the high-fidelity multimedia communication server sends communication information to the target mobile terminal according to the optimal data channel corresponding to the transmission unit to the MEC controller determined in real time.
The method for monitoring the transmission delay between the transmission units by the MEC controller is as follows:
all transmission units send messages containing self identifiers and a playback request to the MEC controller and record sending time, the MEC controller returns a playback response after receiving the playback request, the transmission units record receiving time of the playback response, and the MEC controller calculates transmission delay of the transmission units according to the sending time and the receiving time.
The high-fidelity multimedia communication system based on the 5G customized network high-precision positioning is characterized in that the transmission unit is used for sending a plurality of echo requests and receiving a plurality of echo responses of the MEC controller, and the MEC controller calculates the average transmission delay of the transmission unit according to the sending time and the receiving time of the echo requests and the echo responses.
In the high-fidelity multimedia communication system based on the 5G customized network high-precision positioning, the MEC controller counts the proportion between the request sent by the transmission unit and the response received by the transmission unit, and calculates the transmission quality.
According to the high-fidelity multimedia communication system based on the 5G customized network high-precision positioning, after receiving the message, the MEC controller forwards the message to other transmission units; the MEC controller monitors the transmission delay and the transmission quality between all the transmission units in real time.
The method for generating the optimal data channel between the transmission unit and the MEC controller is as follows:
initializing a service quality array, wherein the service quality array comprises transmission delay, transmission quality and position information;
initializing an accessed set, recording the transmission units of which the optimal data channels are determined, and only the current transmission unit is in the set initially;
and selecting a plurality of transmission units with optimal service quality arrays from the current transmission units to the MEC controller from the non-access set as optimal data channels.
According to the high-fidelity multimedia communication system based on the 5G customized network high-precision positioning, the transmission unit receives the optimal data channel issued by the MEC controller and updates the channel table of the transmission unit, and the channel table stores the network address and the next hop information of the transmission unit.
The high-precision positioning module is used for determining the position information of the mobile terminal in real time according to the high-precision positioning server and the satellite, and the method comprises the following steps:
the high-precision positioning module and the high-precision positioning server station simultaneously receive satellite signals and record carrier phase observation values;
the high-precision positioning server sends the carrier phase observed value and the coordinates of the carrier phase observed value to the high-precision positioning module;
the high-precision positioning module calculates a phase difference according to the carrier phase observed value of the high-precision positioning module and the high-precision positioning server:
wherein, delta phi i,j The phase difference of the j-th frequency of the ith satellite between the high-precision positioning server and the high-precision positioning module;
lambda is the carrier wavelength;
Δρ i,j the geometrical distance difference of the j-th frequency of the ith satellite between the high-precision positioning server and the high-precision positioning module;
ΔN i,j the integer ambiguity of the j-th frequency of the ith satellite between the high-precision positioning server and the high-precision positioning module;
ΔI i,j is what is shown asIonospheric error of the j-th frequency of the i-th satellite between the high-precision positioning server and the high-precision positioning module;
ΔT i,j is a tropospheric error of a j-th frequency of an i-th satellite between the high-precision positioning server and the high-precision positioning module;
ΔM i,j is the multipath error of the j-th frequency of the ith satellite between the high-precision positioning server and the high-precision positioning module;
ΔE i,j other errors of the j-th frequency of the ith satellite between the high-precision positioning server and the high-precision positioning module;
and the high-precision positioning module solves the coordinates of the high-precision positioning module according to the phase difference and the coordinates of the high-precision positioning server.
The high-fidelity multimedia communication system based on the 5G customized network high-precision positioning comprises an audio decoder and a video decoder;
the audio codec is used for encoding and decoding audio data;
the video codec is used for encoding and decoding video data;
the MEC controller is used for receiving communication information from a plurality of mobile terminals and sending a forwarding instruction;
and the 5G customized network data transmission unit receives a forwarding instruction issued by the MEC controller and forwards the communication information.
A high-fidelity multimedia communication system based on 5G custom network high-precision positioning as described above, the MEC controller comprising:
the user management module is used for managing user data, including user identity authentication, user data storage and user data transmission;
the service management module is used for managing the access and the processing of different services, including data service, voice service and video service;
and the safety management module is used for encrypting and decrypting the communication data.
The high-fidelity multimedia communication system based on the 5G customized network high-precision positioning is characterized in that the mobile terminal is used for sending registration information of the mobile terminal to the MEC controller, the MEC controller performs authentication and grouping according to the registration information, and the MEC controller determines an optimal data channel for the mobile terminal after authentication.
Compared with the prior art, the invention has the advantages and positive effects that: the high-fidelity multimedia communication system based on the 5G customized network high-precision positioning can provide position service and high-fidelity communication, and the MEC controller is used for monitoring the transmission delay and the transmission quality between the transmission units in real time and adjusting the optimal data channel of communication data in real time, so that the efficiency and the quality of multimedia communication are improved.
Other features and advantages of the present invention will become apparent upon review of the detailed description of the invention in conjunction with the drawings.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of a system according to an embodiment of the present invention;
fig. 2 is a schematic diagram of several transmission units according to an embodiment of the invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention more clear, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.
In the description of the present invention, the terms "upper", "lower", "left", "right", and the like indicate directions or positional relationships based on the positional relationships shown in the drawings, and are "inner" in a direction approaching the center of the cover, and "outer" in the opposite direction. The terminology is used for the purpose of describing and simplifying the description only, and is not intended to indicate or imply that the devices or elements being referred to must have a particular orientation, be constructed and operate in a particular orientation, and thus should not be construed as limiting the invention. Furthermore, the terms "first," "second," "third," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance; features defining "first", "second" may include one or more such features, either explicitly or implicitly. In the description of the present invention, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.
In the present invention, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.
In the present invention, unless expressly stated or limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, as well as the first and second features not being in direct contact but being in contact with each other through additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.
The following disclosure provides many different embodiments, or examples, for implementing different features of the invention. In order to simplify the present disclosure, components and arrangements of specific examples are described below. They are, of course, merely examples and are not intended to limit the invention. Furthermore, the present invention may repeat reference numerals and/or letters in the various examples, which are for the purpose of brevity and clarity, and which do not themselves indicate the relationship between the various embodiments and/or arrangements discussed. In addition, the present invention provides examples of various specific processes and materials, but one of ordinary skill in the art will recognize the application of other processes and/or the use of other materials.
As shown in fig. 1, a high-fidelity multimedia communication system based on 5G customized network high-precision positioning comprises a mobile terminal, a 5G customized network signal base station and an MEC device. The mobile terminal, the 5G customized network signal base station and the MEC equipment can be provided with a plurality of mobile terminals.
The mobile terminals communicate with the MEC equipment through the 5G customized network signal base station, and a plurality of mobile terminals can perform many-to-many trunking communication through the 5G customized network signal base station and the MEC equipment.
The communication system comprises a plurality of transmission units, wherein the transmission units comprise a mobile terminal transmission unit positioned at a mobile terminal, a base station transmission unit positioned at a base station and a 5G customized network data transmission unit positioned at MEC equipment, and the mobile terminal transmission unit, the base station transmission unit and the 5G customized network data transmission unit are all called as transmission units.
The mobile terminal comprises: the system comprises a high-precision positioning module, a trunking communication module and a mobile terminal transmission unit.
The high-precision positioning module is used for determining the position information of the mobile terminal in real time according to the high-precision positioning server and the satellite.
The trunking communication module is used for inputting or acquiring communication information by members.
And the mobile terminal transmission unit is used for transmitting the communication information.
The communication information includes video and audio information.
The mobile terminal is used for sending the registration information of the mobile terminal to the MEC controller, the MEC controller performs authentication and grouping according to the registration information, and the MEC controller determines an optimal data channel for the mobile terminal after authentication.
The 5G customized network signal base station transmits the modulated and analyzed data containing the registration information of the 5G customized network mobile terminal to the 5G customized network MEC controller, and the MEC controller performs authentication and grouping according to the registration information, and the 5G customized network mobile terminal is distributed with a data channel (an optimal data channel determined in real time) after the authentication is completed. And the 5G customized network mobile terminal uses the data channel to communicate with the 5G customized network high-precision positioning module and the 5G customized network high-fidelity multimedia communication module.
The 5G customized network signal base station comprises: the device comprises a baseband processor, a radio frequency module, an antenna, a power module, a control unit and a transmission interface.
Baseband processor: is responsible for processing and modulating the digital signal and converting the digital signal into an analog signal.
And the radio frequency module is as follows: is responsible for converting the modulated signal into a radio frequency signal and amplifying and filtering.
An antenna: is responsible for transmitting radio frequency signals or receiving signals from user terminals.
And a power supply module: providing the power supply required by the base station.
And a control unit: and the control and management of the base station are responsible, including configuration, fault diagnosis, software upgrading and the like of the base station.
Base station transmission unit: and the system is responsible for communication with other base stations or 5G customized network data transmission units to transmit and receive data.
The MEC apparatus includes: the system comprises a high-precision positioning server, a high-fidelity multimedia communication server, a 5G customized network data transmission unit and an MEC controller.
The high-precision positioning server is used for sending the carrier phase observed value and the coordinates to the high-precision positioning module.
The high-fidelity multimedia communication server includes an audio decoder and a video decoder.
The audio codec is used to encode and decode audio data.
Video codecs are used to encode and decode video data.
The MEC controller is used for receiving communication information from a plurality of mobile terminals and sending out a forwarding instruction.
The forwarding instructions are in turn the MEC controller decides which streams should be transmitted to other people. The MEC controller is based on the data source information and destination information in the data stream. The data source information includes IP address and port number information of the data source device, and service requirement type information. In particular, the IP address and port number information is used to identify the network address and port number of the data source device, and the traffic demand category information is used to describe the type of data or traffic type sent by the data source device. The data destination information includes IP address and port number information of the destination device. In particular, the IP address and port number information is used to identify the network address and port number of the data destination device. The MEC controller decides whether to control or forward the call connection according to the service requirement. If control of call connection is required, the MEC controller may send Facility, progress, user Information, etc. messages to change call status or parameters. Facility messages are used to provide functions such as transit, hold, hang-up, etc. The Progress message is used to report the Progress of the call, such as dialing, ringing, having been connected, etc. User Information messages are used to transfer User data such as voice, video, text, etc. If call connection needs to be forwarded, the MEC controller can select proper media coding and decoding formats and transmission protocols according to the results of capability negotiation and logic channel establishment, and the two parties describe information such as media types (such as audio and video), transmission protocols (such as RTP/RTCP), media formats (such as G.711 and H.264) and the like supported by the MEC controller, so as to achieve agreed media parameters.
And the 5G customized network data transmission unit receives a forwarding instruction issued by the MEC controller and forwards the communication information.
The MEC controller monitors the transmission delay and the transmission quality between the transmission units in real time; and generating optimal data channels of all the transmission units and the MEC controller in real time according to the transmission delay, the transmission quality and the position information of the transmission units, and transmitting the optimal data channels to the corresponding transmission units.
The mobile terminal sends communication information to the high-fidelity multimedia communication server according to the optimal data channel corresponding to the transmission unit to the MEC controller determined in real time, the MEC controller determines the information of the target mobile terminal according to the communication information, and the high-fidelity multimedia communication server sends the communication information to the target mobile terminal according to the optimal data channel corresponding to the transmission unit to the MEC controller determined in real time.
The optimal data channel is not fixed but dynamically changed under the influence of the position, the transmission delay and the transmission quality, so that the embodiment calculates the optimal data channel in real time, and the communication information is always transmitted according to the optimal data channel, thereby greatly improving the communication efficiency and the communication quality.
The MEC controller includes:
and the user management module is used for managing user data, including user identity authentication, user data storage and user data transmission.
And the service management module is used for managing the access and the processing of different services, including data service, voice service and video service.
And the safety management module is used for encrypting and decrypting the communication data.
And the software platform provides development, testing and deployment environments of MEC application programs, and comprises an operating system, development tools, application program interfaces and the like.
And the management control module is responsible for managing and controlling the MEC controller, including configuration, fault diagnosis, software upgrading and the like of the MEC module.
The method for monitoring the transmission delay between the transmission units by the MEC controller comprises the following steps:
all transmission units send messages containing self identifiers and the echo requests to the MEC controller and record sending time, the MEC controller returns echo responses after receiving the echo requests, the transmission units record receiving time of the echo responses, and the MEC controller calculates transmission delay of the transmission units according to the sending time and the receiving time.
The transmission unit is used for sending a plurality of echo requests and receiving a plurality of echo responses of the MEC controller, and the MEC controller calculates average transmission delay avg_time of the transmission unit according to the sending time and the receiving time of the echo requests and the echo responses.
avg_time＝(sum_time)/n。
Where sum_time represents the total time spent on all requests and n represents the total number of requests.
Minimum time-consuming min_time=min (time_list).
Where time_list represents a time-consuming list of all requests.
Maximum time elapsed max_time=max (time_list).
Where time_list represents a time-consuming list of all requests.
The MEC controller counts the ratio between the transmission unit sending request and receiving reply = num_request/num_response.
Where num_request represents the number of requests sent and num_response represents the number of replies received.
Transmission quality quality= (num_response/num_request) 100% is calculated.
Where num_request represents the number of requests sent and num_response represents the number of replies received. Transmission quality is typically expressed in percent.
After receiving the message, the MEC controller stores the message and forwards the message to other transmission units (except the transmission unit for sending the message) so as to realize that all transmission units in the network have complete topology information; each transmission unit constructs a network diagram according to the collected topology information, and runs Dijkstra algorithm to calculate the optimal data channel from the transmission unit to the MEC controller. The transmission unit can obtain the next hop of the current transmission unit according to the optimal data channel.
The method for generating the optimal data channel of the transmission unit and the MEC controller comprises the following steps:
initializing a service quality array, wherein the service quality array comprises transmission delay, transmission quality and position information;
initializing an accessed set, recording the transmission units of which the optimal data channels are determined, and only the current transmission unit is in the set initially;
and selecting a plurality of transmission units with optimal service quality arrays from the current transmission unit to the MEC controller from the non-accessed set as optimal data channels, and adding the optimal data channels into the accessed set.
The optimal service quality array can be determined according to the index of the array, and specifically comprises transmission delay, transmission quality and position information. The array index is also changed in real time.
In some embodiments, whether to optimize may be determined according to the size of a×transmission delay/standard delay+b×transmission quality/standard quality+c×location information/standard location, where a+b+c=1.
Of course, whether optimal or not may also be determined according to other determination manners.
The MEC controller generates a global channel table for the best data channels of all transmission units.
The MEC controller calculates and refreshes the global channel table in real time.
And finding out the optimal data channel from the current transmission unit to the MEC controller according to the global channel table.
Each transmission unit receives the optimal data channel issued by the MEC controller and updates its own channel table, which stores the network address and the next hop information of the transmission unit. From the channel table it can be determined through which interface the data packet should be forwarded in order to pass the data packet from the source address to the destination address. In the example of fig. 2, the MEC controller determines the best data channel for all transmission units to the MEC controller as a global channel table. That is, the optimal data path of the mobile terminal transmission unit 1 to the MEC controller 1 is determined, the optimal data path of the mobile terminal transmission unit 2 to the MEC controller 1 is determined, …, the optimal data path of the mobile terminal transmission unit 6 to the MEC controller 1 is determined, the optimal data path of the base station transmission unit 1 to the MEC controller 1 is determined, …, the optimal data path of the base station transmission unit 4 to the MEC controller 1 is determined, the optimal data path of the 5G customized network data transmission unit 1 to the MEC controller 1 is determined, and the optimal data path of the 5G customized network data transmission unit 2 to the MEC controller 1 is determined.
The global channel table dynamically changes in real time. For example, the best data channels of the current mobile terminal transmission unit 1 to the MEC controller 1 are: mobile terminal transmission unit 1-base station transmission unit 1-5G customized network data transmission unit 2-MEC controller 1, whereby mobile terminal transmission unit 1 transmits communication data to base station transmission unit 1 by mobile terminal transmission unit 1 transmitting communication data to the high fidelity multimedia communication server corresponding to MEC controller 1, and when MEC controller 1 calculates that the best data channel from base station transmission unit 1 to MEC controller 1 is base station transmission unit 1-5G customized network data transmission unit 1-MEC controller 1, base station transmission unit 1 transmits communication data to 5G customized network data transmission unit 1.
Therefore, in the process of mobile terminal communication, the optimal data channel of each transmission unit is dynamically changed, and the communication data is always positioned on the optimal data channel of the current transmission unit, so as to ensure low transmission delay and high transmission quality.
The method for determining the position information of the mobile terminal in real time by the high-precision positioning module according to the high-precision positioning server and the satellite comprises the following steps:
the high-precision positioning module and the high-precision positioning server station simultaneously receive satellite signals and record carrier phase observation values;
the high-precision positioning server sends the carrier phase observed value and the coordinates of the carrier phase observed value to the high-precision positioning module;
the high-precision positioning module calculates a phase difference according to the carrier phase observed value of the high-precision positioning module and the high-precision positioning server:
wherein, delta phi i,j The phase difference of the j-th frequency of the ith satellite between the high-precision positioning server and the high-precision positioning module; this phase difference is caused by various error factors such as atmospheric delays, ionospheric delays, multipath effects, clock errors, etc. These error parameters may be derived by various methods, such as by processing the satellite signals by doppler shift measurements, ionosphere model corrections, multipath interference suppression, etc., to obtain an estimate of the phase difference.
Lambda is the carrier wavelength; in positioning, signals of a plurality of satellites are usually tracked simultaneously, each satellite has a plurality of frequencies, and the signals of each frequency can be used for calculating the phase difference. The reference station thus obtains position information, in particular via which satellite, depending on the particular application scenario and the satellite system used.
Δρ i,j The geometrical distance difference of the j-th frequency of the ith satellite between the high-precision positioning server and the high-precision positioning module; can be calculated by measuring the propagation time difference of satellite signals, and needs to consider factors such as the distance between the satellite and the receiver, the propagation speed of the signals, and the like.
ΔN i,j The integer ambiguity of the j-th frequency of the ith satellite between the high-precision positioning server and the high-precision positioning module; may be calculated by observing and analyzing the carrier phase. The carrier phase is a continuous signal whose phase difference varies over time, so ambiguity resolution is required to obtain the integer ambiguity.
ΔI i,j An ionospheric error of a j-th frequency of an i-th satellite between the high-precision positioning server and the high-precision positioning module; may be calculated by observing and analyzing the frequency of the satellite signals. The ionosphere affects the propagation of satellite signals, resulting in a change in the propagation velocity of the signals and thus in a change in the phase difference.
ΔT i,j Is a tropospheric error of a j-th frequency of an i-th satellite between the high-precision positioning server and the high-precision positioning module; may be calculated by observing and analyzing the frequency of the satellite signals. Turbulence and other phenomena exist in the troposphere, which can affect the propagation of satellite signals, thereby causing the phase difference to change.
ΔM i,j Is the multipath error of the j-th frequency of the ith satellite between the high-precision positioning server and the high-precision positioning module; may be calculated by observation and analysis of satellite signals. Multipath errors are changes in phase differences caused by changes in propagation time and paths of signals caused by the fact that satellite signals pass through multiple paths in the propagation process.
ΔE i,j Other errors of the j-th frequency of the ith satellite between the high-precision positioning server and the high-precision positioning module; including other unknown error factors, can be calculated by observation and analysis of the satellite signals.
And the high-precision positioning module solves the coordinates of the high-precision positioning module according to the phase difference and the coordinates of the high-precision positioning server.
Assuming that the number of satellite signals received by the high-precision positioning module is n, the position of the ith satellite is (xi, yi, zi), and the distance between the high-precision positioning module and the ith satellite is di, the following n equations can be obtained:
(x1-x)^2+(y1-y)^2+(z1-z)^2＝d1^2
(x2-x)^2+(y2-y)^2+(z2-z)^2＝d2^2
...
(xn-x)^2+(yn-y)^2+(zn-z)^2＝dn^2
where (x, y, z) represents the coordinates of the high-precision positioning module. This is a system of nonlinear equations that is not easily solved. However, we can convert this into a system of linear equations by squaring the two sides of each equation and then extracting the coefficients of x 2, y 2, z 2 and xy, xz, yz, respectively, to obtain a system of linear equations of the form:
2x1x-2y1y+2z1z＝d1^2-x1^2-y1^2-z1^2
2x2x-2y2y+2z2z＝d2^2-x2^2-y2^2-z2^2
...
2xnx-2yny+2znz＝dn^2-xn^2-yn^2-zn^2
the method is a 3 n-element once equation set, and can be solved by using the algorithm such as a least square method or a Kalman filtering method. Taking the least square method as an example, we can express the above equation set as ax=b, where:
A＝[2x1-2y1 2z1；2x2-2y2 2z2；...；2xn-2yn 2zn]
X＝[x；y；z]
B＝[d1^2-x1^2-y1^2-z1^2；d2^2-x2^2-y2^2-z2^2；...；dn^2-xn^2-yn^2-zn^2]
the solution of the least squares method is:
X＝(A^TA)^-1A^TB
where T represents the transpose of the matrix and 1 represents the inverse of the matrix. The formula can quickly solve the coordinates of the high-precision positioning module in a matrix operation mode.
The coordinates of the mobile terminal are typically expressed using longitude and latitude. Other parameters, such as speed, direction, etc., may be represented using numerical or textual form.
Members of the 5G customized web mobile terminal need to use the same communication protocol and data format. Such as RTP (real-time transport protocol), is a UDP-based protocol for transmitting multimedia data streams over IP networks. RTP is commonly used in conjunction with RTCP (real-time transport control protocol) to monitor transport statistics and quality of service and to assist in synchronization of multiple streams. RTP may use different payload formats, such as MPEG-4, G.711, opus, or the like.
The above embodiments are only for illustrating the technical solution of the present invention, and are not limiting; although the invention has been described in detail with reference to the foregoing embodiments, it will be apparent to one skilled in the art that modifications may be made to the technical solutions described in the foregoing embodiments, or equivalents may be substituted for some of the technical features thereof; such modifications and substitutions do not depart from the spirit and scope of the corresponding technical solutions.
Claims (11)
1. A high-fidelity multimedia communication system based on 5G customized web high-precision positioning, the system comprising:
the transmission units comprise a mobile terminal transmission unit positioned at a mobile terminal, a base station transmission unit positioned at a base station and a 5G customized network data transmission unit positioned at MEC equipment;
a mobile terminal, comprising: the system comprises a high-precision positioning module, a trunking communication module and a mobile terminal transmission unit;
a MEC apparatus, comprising: the system comprises a high-precision positioning server, a high-fidelity multimedia communication server, a 5G customized network data transmission unit and an MEC controller;
the high-precision positioning module is used for determining the position information of the mobile terminal in real time according to the high-precision positioning server and the satellite;
the MEC controller monitors the transmission delay and the transmission quality between the transmission units in real time; generating optimal data channels of all transmission units and the MEC controller in real time according to the transmission delay, the transmission quality and the position information of the transmission units, and transmitting the optimal data channels to the corresponding transmission units;
the mobile terminal sends communication information to the high-fidelity multimedia communication server according to the optimal data channel corresponding to the transmission unit to the MEC controller, the MEC controller determines information of the target mobile terminal according to the communication information, and the high-fidelity multimedia communication server sends communication information to the target mobile terminal according to the optimal data channel corresponding to the transmission unit to the MEC controller determined in real time.
2. The high-fidelity multimedia communication system based on 5G customized network high-precision positioning of claim 1, wherein the method for monitoring the transmission delay between the transmission units by the MEC controller comprises the following steps:
all transmission units send messages containing self identifiers and a playback request to the MEC controller and record sending time, the MEC controller returns a playback response after receiving the playback request, the transmission units record receiving time of the playback response, and the MEC controller calculates transmission delay of the transmission units according to the sending time and the receiving time.
3. The high-fidelity multimedia communication system based on 5G customized network high-precision positioning of claim 2, wherein the transmission unit is configured to send a plurality of echo requests and receive a plurality of echo replies from the MEC controller, and the MEC controller calculates an average transmission delay of the transmission unit according to the sending time and the receiving time of the echo requests and the echo replies.
4. A high-fidelity multimedia communication system based on 5G customized network high-precision positioning according to claim 3, wherein said MEC controller counts the ratio between the transmission unit sending request and receiving response, and calculates the transmission quality.
5. The high-fidelity multimedia communication system based on 5G customized network high-precision positioning of claim 2, wherein after receiving the message, the MEC controller forwards the message to other transmission units; the MEC controller monitors the transmission delay and the transmission quality between all the transmission units in real time.
6. The high-fidelity multimedia communication system based on 5G customized web high-precision positioning of claim 1, wherein the method for generating the optimal data channel between the transmission unit and the MEC controller is as follows:
initializing a service quality array, wherein the service quality array comprises transmission delay, transmission quality and position information;
initializing an accessed set, recording the transmission units of which the optimal data channels are determined, and only the current transmission unit is in the set initially;
and selecting a plurality of transmission units with optimal service quality arrays from the current transmission units to the MEC controller from the non-access set as optimal data channels.
7. The high-fidelity multimedia communication system based on 5G customized network high-precision positioning of claim 1, wherein the transmission unit receives the best data channel issued by the MEC controller and updates its own channel table, and the channel table stores the network address and the next hop information of the transmission unit.
8. The high-fidelity multimedia communication system based on 5G customized web high-precision positioning according to claim 1, wherein the method for determining the location information of the mobile terminal in real time by the high-precision positioning module according to the high-precision positioning server and satellite is as follows:
the high-precision positioning module and the high-precision positioning server station simultaneously receive satellite signals and record carrier phase observation values;
the high-precision positioning server sends the carrier phase observed value and the coordinates of the carrier phase observed value to the high-precision positioning module;
the high-precision positioning module calculates a phase difference according to the carrier phase observed value of the high-precision positioning module and the high-precision positioning server:
wherein, delta phi i,j The phase difference of the j-th frequency of the ith satellite between the high-precision positioning server and the high-precision positioning module;
lambda is the carrier wavelength;
Δρ i,j the geometrical distance difference of the j-th frequency of the ith satellite between the high-precision positioning server and the high-precision positioning module;
ΔN i,j the integer ambiguity of the j-th frequency of the ith satellite between the high-precision positioning server and the high-precision positioning module;
ΔI i,j an ionospheric error of a j-th frequency of an i-th satellite between the high-precision positioning server and the high-precision positioning module;
ΔT i,j is a tropospheric error of a j-th frequency of an i-th satellite between the high-precision positioning server and the high-precision positioning module;
ΔM i,j is the multipath error of the j-th frequency of the ith satellite between the high-precision positioning server and the high-precision positioning module;
ΔE i,j other errors of the j-th frequency of the ith satellite between the high-precision positioning server and the high-precision positioning module;
and the high-precision positioning module solves the coordinates of the high-precision positioning module according to the phase difference and the coordinates of the high-precision positioning server.
9. The high-fidelity multimedia communication system based on 5G customized web high-precision positioning of claim 1, wherein the high-fidelity multimedia communication server comprises an audio decoder and a video decoder;
the audio codec is used for encoding and decoding audio data;
the video codec is used for encoding and decoding video data;
the MEC controller is used for receiving communication information from a plurality of mobile terminals and sending a forwarding instruction;
and the 5G customized network data transmission unit receives a forwarding instruction issued by the MEC controller and forwards the communication information.
10. The high-fidelity multimedia communication system of claim 1, wherein said MEC controller comprises:
the user management module is used for managing user data, including user identity authentication, user data storage and user data transmission;
the service management module is used for managing the access and the processing of different services, including data service, voice service and video service;
and the safety management module is used for encrypting and decrypting the communication data.
11. The high-fidelity multimedia communication system based on 5G customized network high-precision positioning of claim 6, wherein the mobile terminal is configured to send registration information of the mobile terminal to the MEC controller, the MEC controller performs authentication and grouping according to the registration information, and the MEC controller determines an optimal data channel for the mobile terminal after authentication.
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6567399B1 (en) * | 1999-05-05 | 2003-05-20 | 3Com Corporation | Hi-fidelity line card |
| CN101150763A (en) * | 2007-10-18 | 2008-03-26 | 中兴通讯股份有限公司 | A terminal and method for testing real time service transmission performance of WiMAX network |
| CN110716220A (en) * | 2018-07-12 | 2020-01-21 | 河南蓝信科技有限责任公司 | High-precision positioning mobile terminal and high-precision positioning method |
| CN114760605A (en) * | 2022-03-04 | 2022-07-15 | 福云智控(厦门)智能科技有限公司 | Multi-address edge computing system of unmanned aerial vehicle network |
| CN115515191A (en) * | 2021-06-07 | 2022-12-23 | 中兴通讯股份有限公司 | Private service quality management method, device, system and storage medium |
| CN115767430A (en) * | 2022-11-18 | 2023-03-07 | 中石化石油工程技术服务有限公司 | Precise petrochemical field space-time information processing and service system based on Beidou |
-
2023
- 2023-08-14 CN CN202311023048.XA patent/CN117320033B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6567399B1 (en) * | 1999-05-05 | 2003-05-20 | 3Com Corporation | Hi-fidelity line card |
| CN101150763A (en) * | 2007-10-18 | 2008-03-26 | 中兴通讯股份有限公司 | A terminal and method for testing real time service transmission performance of WiMAX network |
| CN110716220A (en) * | 2018-07-12 | 2020-01-21 | 河南蓝信科技有限责任公司 | High-precision positioning mobile terminal and high-precision positioning method |
| CN115515191A (en) * | 2021-06-07 | 2022-12-23 | 中兴通讯股份有限公司 | Private service quality management method, device, system and storage medium |
| CN114760605A (en) * | 2022-03-04 | 2022-07-15 | 福云智控(厦门)智能科技有限公司 | Multi-address edge computing system of unmanned aerial vehicle network |
| CN115767430A (en) * | 2022-11-18 | 2023-03-07 | 中石化石油工程技术服务有限公司 | Precise petrochemical field space-time information processing and service system based on Beidou |
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