CN116782364A

CN116782364A - 5G power system time synchronization-based power terminal low-delay jitter method

Info

Publication number: CN116782364A
Application number: CN202310849050.6A
Authority: CN
Inventors: 谢军; 丁富舜; 蒋慧琳
Original assignee: Nanjing Xiaozhuang University
Current assignee: Nanjing Xiaozhuang University
Priority date: 2023-07-12
Filing date: 2023-07-12
Publication date: 2023-09-19

Abstract

The application discloses a power terminal low-delay jitter method based on time synchronization of a 5G power system, which belongs to the technical field of low-delay jitter and comprises the steps of synchronizing the frequency, the phase and the time of a base station and UE, acquiring time information through the base station and sending a time service signal; receiving a time service signal sent by a base station through power equipment, and synchronizing the time of the power equipment and a power 5G terminal; calculating the maximum reachable rate of data transmission by adopting a frequency spectrum efficiency evaluation algorithm according to the synchronized time, and formulating a 5G configuration scheme of the wireless communication technology; acquiring a 5G configuration scheme of a wireless communication technology, slicing a 5G network according to network resource allocation, combining slices according to network capacity, and allocating network resources in a heterogeneous mode by adopting a slice network resource allocation method facing user QoS. The application solves the problem that the 5G bearing distribution network stable protection service has end-to-end delay jitter in the prior art, and reduces the end-to-end delay jitter of the 5G bearing distribution network stable protection service.

Description

5G power system time synchronization-based power terminal low-delay jitter method

Technical Field

The application relates to the technical field of low-delay jitter, in particular to a power terminal low-delay jitter method based on time synchronization of a 5G power system.

Background

The accuracy of the time synchronization of the power system is an important basic condition for guaranteeing the operation control and fault analysis of the power system, the core function of the time synchronization system mainly provides time synchronization service for transient, dynamic and steady data acquisition and power grid fault analysis, and in recent years, space-time information service based on Beidou satellites is applied in large scale, and the time synchronization system is rapidly increased from coverage area to system scale. The traditional space-time information service adopts satellite space-time information service, but the related scheme also meets the challenges that indoor satellite information cannot be introduced, outdoor dense urban areas are blocked, satellite signals are deceptively and interfered, weather influence and high maintenance cost are high, and the like. In order to effectively solve the challenges of satellite space-time information service, the application of the wireless communication technology brings a brand new solution to the development of smart grid space-time information service on the basis of traditional satellite space-time information, the 5G age not only can bring ultra-high bandwidth, ultra-low time delay and ultra-large scale connected user experience to us, but also the 5G technology can change the traditional business operation mode and operation mode by combining with industry application requirements. The customized 5G space-time information technology is created for the private network of the intelligent power grid, the power grid business differentiation requirement can be better met, the autonomous controllability and the operation efficiency of a power grid enterprise on own business are further improved, but the problem of end-to-end delay jitter exists in the 5G load-bearing distribution network stable protection business.

Disclosure of Invention

The application aims to overcome the defects in the prior art, provides a power terminal low-delay jitter method based on time synchronization of a 5G power system, and solves the problem of end-to-end delay jitter of a 5G load distribution network stable protection service in the prior art.

In order to achieve the above purpose, the application is realized by adopting the following technical scheme:

in a first aspect, the present application provides a method for low delay jitter of a power terminal based on time synchronization of a 5G power system, including:

synchronizing the frequency, phase and time of the base station and the UE, acquiring time information through the base station and sending a time service signal;

receiving a time service signal sent by a base station through power equipment, and synchronizing the time of the power equipment and a power 5G terminal;

calculating the maximum reachable rate of data transmission by adopting a frequency spectrum efficiency evaluation algorithm according to the synchronized time, and formulating a 5G configuration scheme of the wireless communication technology;

acquiring a 5G configuration scheme of a wireless communication technology, slicing a 5G network according to network resource allocation, combining slices according to network capacity, and allocating network resources in a heterogeneous mode by adopting a slice network resource allocation method facing user QoS.

With reference to the first aspect, further, the UE includes 5UE, and the synchronizing the frequency, phase and time of the base station and the UE, acquiring time information and transmitting a time service signal through the base station includes:

adjusting the frequency and phase of the UE to synchronize the frequency and phase of the base station with the frequency and phase of the 5 UE;

synchronizing the time between the base station and the UE, so that the 5UE obtains time information through the base station;

and sending the time service signal through the base station.

With reference to the first aspect, further, the adjusting the frequency and phase of the UE to synchronize the frequency and phase of the base station with the frequency and phase of the 5UE includes:

measuring a preamble sequence of the uplink of the UE through a base station;

according to the uplink preamble sequence of the UE, calculating time advance TA values of the power 5G terminal and the base station;

returning the TA value to the UE through random access corresponding message RAR;

and adjusting the frequency and the phase of the UE according to the TA value.

With reference to the first aspect, further, the time of synchronizing the base station with the UE includes:

the base station informs the power 5G terminal of the time through SIB information;

and after receiving the time, the electric 5G terminal performs time delay compensation of downlink propagation and synchronizes the time to the UE.

With reference to the first aspect, further, an algorithm formula of the spectrum efficiency evaluation algorithm is:

where D is the transmission from the device to the base station, i.e. dash,for the throughput achievable for data transmission, A is the area of influence, +.>For minimum small-scale fading coefficient value, +.>As a small-scale fading coefficient probability density function, dx is a minute distance element in the x-axis direction, dr is a minute distance element in the r-axis direction, and dθ is a minute angle element in the θ -axis direction.

With reference to the first aspect, further, the wireless communication technology 5G configuration scheme adopts a time slot-based scheduling method, and the time slots adopt a self-time slot scheduling structure.

With reference to the first aspect, further, slicing the 5G network by network resource allocation includes adopting an end-to-end slice management architecture that spans the radio access network, the carrier network, and the core network; determining an end-to-end isolation implementation mode of the network slice; the isolation implementation mode comprises an access network isolation mode, a bearing network isolation mode and a core network isolation mode.

With reference to the first aspect, further, the method for allocating slice network resources for user QoS includes:

constructing an E2E-enabled slice network system architecture;

providing, by different types of power devices, their parameter information to respective service providers;

the resource allocation of different types of power devices is determined with the goal of maximizing network energy efficiency.

In a second aspect, the present application provides a low-delay jitter device for a power terminal based on time synchronization of a 5G power system, including:

the signal transmitting module is used for synchronizing the frequency, the phase and the time of the base station and the UE, acquiring time information through the base station and transmitting time service signals;

the time synchronization module is used for receiving time service signals sent by the base station through the power equipment and synchronizing the time of the power equipment and the power 5G terminal;

the scheme configuration module is used for calculating the maximum reachable rate of data transmission by adopting a frequency spectrum efficiency evaluation algorithm according to the synchronized time and making a 5G configuration scheme of the wireless communication technology;

and the resource allocation module is used for acquiring a 5G configuration scheme of the wireless communication technology, slicing the 5G network according to network resource allocation, combining slices according to network capacity, and allocating network resources in a heterogeneous mode by adopting a slice network resource allocation method facing to user QoS.

In a third aspect, the present application provides a computer readable storage medium having stored thereon a computer program which, when executed by a processor, implements a 5G power system time synchronization based power terminal low latency jitter method according to any of the first aspects.

Compared with the prior art, the application has the beneficial effects that:

according to the application, the frequency, the phase and the time of the base station and the UE are synchronized, the time information is acquired through the base station, the time service signal is sent, the high-precision time is acquired, and the accuracy and the reliability of data transmission are ensured; the time service signal sent by the base station is received through the power equipment, the time between the power equipment and the power 5G terminal is synchronized, and the transmission and the application of accurate time information in the system are ensured; according to the synchronized time, calculating the maximum reachable rate of data transmission by adopting a frequency spectrum efficiency evaluation algorithm, so as to determine the frequency spectrum efficiency of the system, thereby optimizing the utilization of network resources; formulating a wireless communication technology 5G configuration scheme to reduce transmission delay of an air interface and improve performance of a system; acquiring a 5G configuration scheme of a wireless communication technology, slicing a 5G network according to network resource allocation, combining slices according to network capacity, adopting a sliced network resource allocation method facing user QoS, allocating network resources in a heterogeneous mode to achieve the purpose of generating a plurality of logic subnets with different characteristics based on one 5G network, flexibly allocating resources according to different service requirements, so as to provide sliced network resource allocation aiming at user quality service (QoS), and finally reducing end-to-end delay jitter of stable protection service of the 5G bearing distribution network.

Drawings

Fig. 1 is an overall flowchart of a power terminal low-delay jitter method based on time synchronization of a 5G power system according to an embodiment of the present application;

fig. 2 is a flowchart of a method for synchronizing frequencies and phases of a base station and 5UE in a method for synchronizing low delay of a power terminal based on time synchronization of a 5G power system according to an embodiment of the present application;

fig. 3 is a flowchart of a UE time synchronization method in a power terminal low delay jitter method based on time synchronization of a 5G power system according to an embodiment of the present application;

fig. 4 is a flowchart of a slice network resource allocation method of QoS in a power terminal low delay jitter method based on time synchronization of a 5G power system according to an embodiment of the present application.

Detailed Description

The following detailed description of the technical solutions of the present application will be given by way of the accompanying drawings and specific embodiments, and it should be understood that the specific features of the embodiments and embodiments of the present application are detailed descriptions of the technical solutions of the present application, and not limiting the technical solutions of the present application, and that the embodiments and technical features of the embodiments of the present application may be combined with each other without conflict.

The term "and/or" is herein merely an association relationship describing an associated object, meaning that there may be three relationships, e.g., a and/or B, may represent: a exists alone, A and B exist together, and B exists alone. In addition, the character "/" herein generally indicates that the front and rear associated objects are an "or" relationship.

Embodiment one:

as shown in fig. 1, the embodiment provides a power terminal low-delay jitter method based on time synchronization of a 5G power system, which includes the following steps:

step one: corresponding frequency and phase adjustment is carried out on the UE, and the frequency and phase of the base station and the UE are synchronized, so that the frequency and phase of the base station and the 5UE are synchronized;

UE means User Equipment (User Equipment), and 5UE means User Equipment in the fifth generation mobile communication technology (5G). Both UE and 5UE refer to the same class of device, i.e. terminal devices connected to the mobile communication network. The 5UE more specifically refers to a user equipment using 5G technology. Thus, between UE and 5UE are different representations of the same class of devices, indicating that they are in different contexts or environments. The UE includes 5UE, and thus, the frequency and phase of the UE are adjusted so that the frequency and phase of the base station are synchronized with the frequency and phase of the 5 UE.

Wherein, adjust the frequency and phase place of UE, make the frequency and phase place of the base station and frequency and phase place of 5UE synchronous, the step includes:

s1.1, measuring a preamble sequence of the uplink of UE through a base station;

s1.2, calculating time advance TA values of the power 5G terminal and the base station according to a preamble sequence of the UE uplink;

s1.3, returning a time advance TA value to the UE in a random access corresponding message RAR;

and S1.4, adjusting the frequency and the phase of the UE according to the TA value.

Note that TA represents a Timing Advance (Timing Advance), which is a parameter for adjusting the Timing of a UE transmitting a signal in a wireless communication system so as to arrive at a base station at an appropriate time. TA is in units of time intervals, typically in microseconds (mus). By adjusting the time advance, the UE may send signals on the slot boundaries to ensure that the signals are accurately received by the base station.

The RAR represents a random access response message (Random Access Response), which is a message for responding to a random access request of the UE. When the UE initiates the random access request, the base station responds to the UE through the RAR message and includes some necessary information, such as a Time Advance (TA), to inform the UE of the frequency and phase adjustment, so as to achieve frequency and phase synchronization between the base station and the UE. The RAR message is part of the random access procedure to ensure normal communication establishment between the UE and the base station.

When the method is specifically used, in the uplink and downlink synchronization process of the base station and the 5UE at present, the base station calculates the time advance TA of the terminal and the base station by measuring the uplink preamble sequence of the UE, and returns the TA value to the UE in the random access corresponding message RAR, and the UE carries out corresponding frequency and phase adjustment, so that only frame information is arranged between the base station and the UE, and time information obtained from the base station is not included.

Step two: acquiring time information through a base station and sending a time service signal;

and synchronizing the time between the base station and the UE, so that the 5UE obtains accurate time information through the base station and sends a time service signal through the base station. In determining that the power device receives the time service signal, the signal is typically transmitted from a 5G base station. The 5G base station may provide a high precision time synchronization signal and send the time service signal to the power device via a specific interface or protocol. The power equipment can receive and analyze the time service signal through the connection with the 5G base station, so that the time synchronization with the power 5G terminal is realized.

The UE time synchronization method comprises the following steps:

s2.1, the base station informs the electric power 5G terminal of the accurate time through SIB information;

and S2.2, after receiving the accurate time issued by the network, the electric 5G terminal performs time delay compensation of downlink propagation, and synchronizes the time to the UE.

The SIB represents a system information block (System Information Block), which is an information block broadcasted in a wireless communication system for delivering important information of system configuration, parameters, network status, etc., to the UE. The SIB is included in the broadcast channel so that all nearby UEs can receive and interpret this information. In the UE time synchronization method, a base station can transmit accurate time to a terminal through an SIB message, so that the terminal can acquire and perform time synchronization.

When the wireless time service system is specifically used, the base station and the 5UE support the wireless time service function through modification and upgrading, the upgraded base station informs the terminal of accurate time through an SIB message, and after the terminal receives the accurate time issued by the network, time delay compensation of downlink propagation is carried out, so that time synchronization between the base station and the UE is realized, and a standard proposal about time delay compensation of 5G power time service can be submitted to the 3 GPP. The 3GPP stands for third generation partnership project (Third Generation Partnership Project), which is an international organization for standardization, working on standards for mobile communication technology. Members of 3GPP include telecom operators, equipment manufacturers and other stakeholders worldwide. The 3GPP is responsible for making standards and specifications for mobile communication technologies such as GSM, LTE, 5G, etc., to promote interoperability and development of global mobile communications. In the 5G power timing scheme, standard proposals for delay compensation may be submitted to 3GPP to facilitate formulation and adoption of relevant standards.

Step three: and receiving a time service signal sent by the base station through the power equipment, and synchronizing the time of the power equipment and the power 5G terminal.

The power equipment receives time service signals in four modes, namely pulse time synchronization, coding time synchronization, NTP time synchronization and serial message time synchronization, wherein the pulse time synchronization time accuracy is highest and is not more than 1 mu s; the time accuracy of the coding to the time can reach 1ms; the NTP time setting accuracy is about 200 mu s-10 ms; serial messages are worst for about 1s. Because the pulse time setting signals do not comprise the time information of year, month and day, the time setting mode of combination of serial port and pulse is frequently adopted in practical application, the disadvantage of the mode is that 2 signals need to be transmitted, the IRIG-B code time setting mode takes the advantages of the two into consideration, the time data of the time setting edge of the pulse time setting and the time setting of the serial port message are combined together, a time setting loop is simplified, and the time setting precision is improved.

NTP stands for network time protocol (Network Time Protocol), which is a protocol for time synchronization in computer networks. The NTP protocol enables each device to calibrate its own clock by transmitting time information in the network to achieve a uniform time standard. NTP is typically time synchronized over the internet, provides high time accuracy and reliability, and is capable of adapting to network delays and clock drift.

IRIG-B code is a time coding format formulated by the international wireless engineering society (International Radio Consultative Committee) for time synchronization and transmission. IRIG-B codes are mainly used in the field of industrial control systems, power systems, etc., and are represented by encoding time information into a specific level pulse sequence. IRIG-B codes contain time, minute, second, etc. information, as well as accurate synchronization signals, which can provide high accuracy time synchronization and time standards. In the time service signal received by the power equipment, IRIG-B codes are often used for combining the advantages of pulse time synchronization and serial port message time synchronization so as to improve time synchronization precision and simplify a time synchronization loop.

The 5UE accesses a clock input interface corresponding to the power equipment through an RS-485 line, uses an IRIG-B code (DC) mode to pair the power equipment, adopts a pulse width coding mode, has a transmission rate of 1 frame/second, transmits data of each frame to contain information such as year, day, time, minute and second, each frame of data of the IRIG-B code (DC) consists of 100 code elements, the width of each code element is 10ms, the code elements are respectively 3 kinds, namely a code element 'P', code element logic binary '1' and '0', the front edge start mark of the 2 nd 8ms pulse in two continuous 8ms pulses is Pr, 0,1, … and 99 code elements, a BCD field is arranged between Pr and P5, and transmits time information (including second, minute, hour and day 4 kinds of information) in a BCD code format, a CF field is arranged between P5 and P7, so that a control function is formulated according to a practical use method. Between P8 and P9 is SBS (Seconds Binary Sync, binary second) field, which is time information expressed by binary system and takes seconds as unit, and the power equipment detects time information and time-setting pulse through IRIG-B code (DC) decoding module, so as to realize time service of the power equipment.

IRIG-B code (DC) is a time coding format used for time synchronization and transmission. The pulse width coding mode is adopted, and the data of each frame comprises information such as year, day, time, minute, second and the like. IRIG-B code (DC) consists of 100 symbols per frame, each symbol having a width of 10ms. Symbols are divided into three types: symbol "P", symbol logic binary "1" and "0". By decoding IRIG-B code (DC), accurate time information and time tick can be obtained.

SBS represents a binary second (Seconds Binary Sync), which is a field in IRIG-B codes (DC), and represents time information in seconds in binary. The SBS field is located between P8 and P9 of IRIG-B code (DC), and the seconds of the current time can be obtained by analyzing the SBS field. The power equipment detects time information and time setting pulse in IRIG-B code (DC) through a de-module, and obtains seconds by using SBS field, thereby realizing accurate time synchronization and time service.

Step four: according to the synchronized time, a spectrum efficiency evaluation algorithm is adopted to determine a spectrum efficiency performance evaluation index standard, the maximum reachable rate of data transmission is calculated, and a 5G configuration scheme of the wireless communication technology is formulated;

the algorithm formula of the spectrum efficiency evaluation algorithm is as follows:

where D is the transmission from the device to the base station, i.e. dash,for the throughput achievable for data transmission, A is the area of influence, +.>For minimum small-scale fading coefficient value, +.>As a probability density function of a small-scale fading coefficient, dx is a tiny distance element in the x-axis direction, dr is a tiny distance element in the r-axis direction, dθ is a tiny angle element in the θ -axis direction, and the three tiny elements are multiplied to form a tiny volume element for integral calculation in a three-dimensional space.

In order to calculate the spectral efficiency of the uplink delay sensitive region, an influence region is first calculated, where the influence region a represents the area of the region where the receiving end can acquire a certain amount of transmission power.

Step five: making a 5G configuration scheme of the wireless communication technology, and reducing the transmission delay of an air interface;

the 5G configuration scheme of the wireless communication technology adopts a time slot scheduling method, each subframe has n time slots, n depends on subcarrier parameter configuration, the larger the subcarrier width configuration is, the more the number of time slots of each subframe is, the shorter the time of a single time slot is, for example, when the subcarrier width configuration is 480kHz, 32 time slots are arranged in each subframe, 1 time slot is only 0.03125 millisecond, if the time slots are adopted as units for data transmission, the wireless transmission delay is only 3% of the 4G transmission delay, if the MINI time slots are adopted as units for transmission, 1 time slot is 14 symbols, the minimum time domain transmission unit can be 2, 4 and 7 symbols, and the wireless transmission delay is further reduced by 80% on the basis of normal time slot scheduling. MINI is a specific time slot scheduling unit, and in 5G communication, a time slot is a time interval for transmitting data, and is used for dividing a subframe for data transmission and scheduling.

The time slot based on time slot scheduling adopts a self-time slot scheduling structure. In order to further reduce the time delay, 5G defines a self-contained time slot/subframe structure, where the same time slot/subframe includes Downlink DL (Downlink), which refers to a data transmission direction from a base station to a user terminal, and a Guard Period, which refers to a time interval introduced in time slot scheduling to avoid interference between Downlink and Uplink data.

Step six: acquiring a 5G configuration scheme of a wireless communication technology, flexibly distributing slices to a 5G network according to network resources, and combining the slices according to network capacity as required;

the 5G network adopts an end-to-end slice management architecture which spans the wireless access network, the carrier network and the core network according to the network resource allocation slice. When the method is specifically used, the 5G network flexibly distributes slices according to network resources, and combines the slices according to network capacity as required, so that the purpose of generating a plurality of logic subnets with different characteristics based on one 5G network is realized, the purpose of the network slices is to flexibly distribute the resources according to different service requirements and global resource allocation is needed, and therefore, the 5G adopts an end-to-end slice management architecture crossing a wireless access network, a carrier network and a core network for the network slices, and the end-to-end management of various resources and QoS is realized.

Step seven: determining an end-to-end isolation implementation mode of the network slice;

the isolation mode comprises three isolation modes of an access network, a bearing network, a core network and the like, wherein the access network is composed of a wireless air interface and basic processing resources, the core network is constructed based on a virtualization infrastructure, and a deployment architecture of the core network is divided into a resource layer, a network function layer and a management arrangement layer. When the wireless access network is specifically used, the access network is composed of a wireless air interface and basic processing resources, in a 5G Orthogonal Frequency Division Multiple Access (OFDMA) system, a wireless frequency spectrum is divided into different resource blocks from time domain, frequency domain and space domain dimensions and is used for carrying data to be transmitted on the wireless air interface, the isolation of wireless frequency spectrum resources can be divided into physical isolation and logical isolation, the physical isolation is to allocate special spectrum bandwidth to network slices, and then the resource blocks allocated to the slices are continuous. The logic isolation is that the resource blocks are allocated according to the requirements of different slices, at this time, the resource blocks allocated to each slice are discontinuous, a plurality of slices share the total spectrum resources, the 5G core network is constructed based on a virtualized infrastructure, the deployment architecture is divided into a resource layer, a network function layer and a management arrangement layer, and the safety isolation of the network slices can be realized by three-level isolation modes of isolation of the corresponding basic resource layer of the slices, isolation of the network layer and isolation of the management layer.

Step eight: the research comprehensively considers the requirements of different slicing users, adopts a slicing network resource allocation method facing to user QoS, and allocates wireless network resources in a heterogeneous mode.

The slice network resource allocation method facing to the QoS of the user comprises the following steps:

s8.1, constructing an E2E enabled slice network system architecture;

s8.2, providing parameter information of the power equipment to corresponding service providers by the power equipment of different types;

and S8.3, determining the resource allocation of different types of power equipment under the aim of maximizing the network energy efficiency.

When the method is specifically used, an E2E-enabled slicing network system architecture is firstly constructed, wherein the slicing network system architecture comprises different types of devices and service providers, the different types of devices are communicated with the corresponding service providers, the different types of devices comprise RRH devices, ioT devices and E2E devices, the different types of devices have different high-speed and low-latency service requirements, the high-speed and low-latency service requirements are realized through the network slicing technology based on network virtualization technology and software defined network technology, the RRH devices are served by the RRH, the IoT devices are served by edge access points, the E2E devices are served as directly connected devices by the E2E devices, then the different types of devices provide parameter information for the corresponding service providers, the service providers distinguish the types of the different devices according to the parameter information, and the communication modes adopted by the different types of devices are determined.

RRH (Remote Radio Head) is a device in a wireless communication system, and is generally used to convert a baseband signal into a radio frequency signal and perform wireless transmission. RRHs are typically associated with base stations for providing wireless network coverage and connectivity.

IoT (Internet of Things), namely the Internet of things. It is a network of various physical devices, sensors, software and network connections that enable the devices to communicate and exchange data with each other. IoT devices typically include various sensors, smart home devices, industrial devices, etc., that communicate and interact with data over the internet.

QoS (Quality of Service) represents the quality of service, which refers to the level of quality of a particular service provided to a user or application in a network. QoS is the ability to measure network performance and reliability based on a series of parameters and metrics, including bandwidth, delay, jitter, packet loss rate, etc. By configuring and managing network resources, qoS may ensure that critical applications or specific users are provided with higher priority and more reliable service in the event of network congestion or limited resources.

E2E (End-to-End) stands for End-to-End, referring to a complete path or link from a transmitting End to a receiving End in network communication. E2E enablement means that individual links and components in the overall communication link are considered to ensure end-to-end quality of service and user experience. In the context of network slicing, E2E enablement requires comprehensive consideration between service requirements of different sliced users, and provides adaptive and differentiated resource allocation to meet specific requirements of each user and optimize network performance.

The parameter information includes reference signal received power, signal to interference plus noise ratio, channel state information reference signal, location, service requirements, etc. Determining the judgment criteria of the communication modes adopted by different types of equipment as the comparison result of the distance and the relative movement speed between the equipment and a preset threshold value, if the distance between any two pieces of equipment is larger than the preset distance threshold value and the relative movement speed is larger than the preset speed threshold value, respectively establishing communication links between the two pieces of equipment and RRH, and executing the RRH communication mode; and if the distance between any two devices is smaller than the set distance threshold and the relative movement speed is smaller than the set speed threshold, releasing the communication link with the RRH by the two devices, executing an E2E communication mode, and finally determining the resource allocation of different types of devices under the aim of maximizing the network energy efficiency, wherein the method comprises the steps of determining the beamforming vector allocation of the RRH device, determining the transmission power allocation among the E2E devices and determining the resource block allocation of the IoT device.

In summary, when the method is specifically used, the UE is first subjected to corresponding frequency and phase adjustment, frequency and phase synchronization between the base station and the 5UE are performed, the 5UE obtains clock information from the base station through an air interface, the UE obtains UTC (Coordinated Universal Time ), GPS and local time by using parameters provided by the base station, and uses the time information for various purposes, such as assisting GPS initialization, synchronizing the UE clock, and then performing UE time synchronization, so that the 5UE obtains accurate time information from the base station. After time synchronization of a base station and UE, a power device is determined to receive time service signals, time synchronization of a power 5G terminal and the power device is achieved, time data of a pulse time setting on time edge and a serial port message time setting are combined together, a time setting loop is simplified, time setting precision is improved, a frequency spectrum efficiency performance evaluation index standard is determined, the maximum reachable rate of data transmission is calculated, transmission delay of an air interface is reduced, waiting time and power consumption are reduced, a 5G network is flexibly allocated and sliced according to network resources, slicing is combined according to network capacity as required, the purpose of generating a plurality of logic subnetworks with different characteristics based on one 5G network is achieved, resource allocation is flexibly carried out according to different service requirements, a global resource allocation is needed, a network slicing end-to-end isolation implementation mode is determined, researches comprehensively consider requirements of different slicing users, wireless network resources are allocated in an heterogeneous mode, different users in the network are enabled to always obtain optimal network service resources on the basis of guaranteeing speed and time delay requirements, and simultaneously different users in a network QoS (quality of service) are enabled to be different in a network E2 slicing.

The application can obtain high-precision time by utilizing the self-carried time synchronizing signal of the 5G base station through the electric 5G terminal, and outputs the high-precision time to the electric power distribution network stability protection device through interface protocols such as B code, PTP (Precision Time Protocol, accurate time protocol) and the like, thereby improving the fault tolerance capability of the electric power distribution network stability protection system, reducing the dependence and construction difficulty of the electric power distribution network stability protection system on satellites, and reducing the end-to-end delay jitter of 5G load distribution network stability protection service by comprehensively utilizing the low-delay processing technology, the terminal uplink enhancement, the non-scheduling transmission and the non-time slot transmission technology of the electric power 5G communication terminal real-time operation system.

Among them, UTC is an atomic clock-based time standard for coordinating time worldwide. UTC is obtained by combining the observation of the rotation of the earth with the international atomic time (International Atomic Time). It is a widely used time standard in the world, and many fields and applications use UTC as a reference time, including aerospace, communications, computer networks, and the like. UTC ensures the consistency of time throughout the world by accurately measuring and correcting atomic clocks throughout the world.

The B code is a time coding format, which is commonly used for transmitting time information. In a power distribution network stability protection system, the B-code may be used to represent a time stamp or time synchronization information. It is a binary coding scheme that accurately represents time and synchronization signals so that individual systems or devices can synchronize their operations and events.

PTP is a network protocol for achieving high precision clock synchronization in computer networks. The PTP protocol achieves time consistency of each device by transmitting time synchronization information in the network. In a power distribution network stability protection system, PTP may be used to ensure time synchronization between the power 5G terminals and the distribution network stability protection device.

5GLAN refers to a computer network that connects multiple devices within a small geographic area. LANs are typically used to organize data communications within an interior or building to provide a high-speed, low-latency local area network connection. In the power distribution network stability protection system, 5GLAN for distribution network protection refers to a local area network specifically designed for distribution network protection application and based on 5G technology, which is used for supporting high-speed and low-delay communication between distribution network protection devices and providing optimized network performance and service quality.

Embodiment two:

based on the same inventive concept as the first embodiment, this embodiment introduces a power terminal low-delay jitter device based on time synchronization of a 5G power system, including:

The specific functions of the above modules are related to the method in the reference embodiment, and are not described herein.

Embodiment III:

the present embodiment introduces a computer-readable storage medium, on which a computer program is stored, which when executed by a processor, implements the power terminal low-delay jitter method based on time synchronization of a 5G power system according to any one of the first embodiments, based on the same inventive concept as the other embodiments.

In summary, the present application provides a method for low delay jitter of an electric power terminal based on time synchronization of a 5G electric power system, which aims to solve the problem of end-to-end delay jitter of a stable protection service of a 5G bearer distribution network in the prior art, and specifically relates to the following technical problems:

low delay jitter of power terminals: for the application of the power terminal in the 5G power system, the time delay and the time delay jitter of the terminal are reduced, so that high-precision time synchronization between the power equipment and the terminal is ensured.

5G power system time synchronization: time synchronization among all components in the 5G power system is realized, and accurate time information transmission and application in the system are ensured.

Frequency and phase synchronization: and the base station and the 5G power terminal are synchronized in frequency and phase so as to ensure the accuracy and reliability of data transmission.

Maximum achievable rate of data transmission: the maximum rate of data transmission is evaluated to determine the spectral efficiency of the system, thereby optimizing the utilization of network resources.

Wireless communication technology 5G configuration scheme: a wireless communication configuration scheme suitable for a 5G power system is formulated to reduce transmission delay of an air interface and improve performance of the system.

Network slicing and resource allocation: the wireless network resource slices are allocated to different devices and services according to the needs of different users to provide sliced network resource allocation for user quality of service (QoS).

By solving the technical problems, the application can achieve the following beneficial effects:

1. the application can obtain high-precision time by utilizing the self-carried time synchronizing signal of the 5G base station through the electric 5G terminal, and outputs the high-precision time to the electric power distribution network stability protection device through interface protocols such as B codes, PTP and the like, thereby improving the fault tolerance capability of the electric power distribution network stability protection system, reducing the dependence and construction difficulty of the distribution network stability protection system on satellites, and reducing the end-to-end delay jitter of 5G bearing distribution network stability protection service by a distribution network protection-oriented network slice high-priority arrangement technology, a QoS guarantee technology and a distribution network protection-oriented 5GLAN low-delay networking technology.

2. The application flexibly distributes the slices according to the network resources to the 5G network and combines the slices according to the network capacity as required so as to realize the purpose of generating a plurality of logic subnets with different characteristics based on one 5G network, and the purpose of the network slices is to flexibly distribute the resources according to different service requirements and to require global resource allocation, so that the 5G adopts an end-to-end slice management architecture crossing a wireless access network, a carrier network and a core network for the network slices, and realizes the end-to-end management of various resources and QoS.

The foregoing is merely a preferred embodiment of the present application, and it should be noted that modifications and variations could be made by those skilled in the art without departing from the technical principles of the present application, and such modifications and variations should also be regarded as being within the scope of the application.

Claims

1. The utility model provides a power terminal low delay jitter method based on 5G power system time synchronization which characterized in that includes:

2. The method for low delay jitter of a power terminal based on time synchronization of a 5G power system according to claim 1, wherein the UE includes 5UE, the synchronizing base station and the UE acquire time information through a base station and transmit a time service signal, and the method comprises:

and sending the time service signal through the base station.

3. The method for low delay jitter of a power terminal based on time synchronization of a 5G power system according to claim 2, wherein the adjusting the frequency and phase of the UE to synchronize the frequency and phase of the base station with the frequency and phase of the 5UE comprises:

measuring a preamble sequence of the uplink of the UE through a base station;

and adjusting the frequency and the phase of the UE according to the TA value.

4. The method for low delay jitter of a power terminal based on time synchronization of a 5G power system according to claim 2, wherein the synchronizing the time between the base station and the UE comprises:

5. The method for low delay jitter of a power terminal based on time synchronization of a 5G power system according to claim 1, wherein the algorithm formula of the spectral efficiency evaluation algorithm is:

where D is the transmission from the device to the base station, i.e. dash,for the throughput achievable for data transmission, a is the area of influence,for minimum small-scale fading coefficient value, +.>As a small-scale fading coefficient probability density function, dx is a minute distance element in the x-axis direction, dr is a minute distance element in the r-axis direction, and dθ is a minute angle element in the θ -axis direction.

6. The method for low delay jitter of a power terminal based on time synchronization of a 5G power system according to claim 1, wherein the wireless communication technology 5G configuration scheme adopts a time slot-based scheduling method, and the time slots adopt a self-time slot scheduling structure.

7. The method of power terminal low delay jitter based on 5G power system time synchronization of claim 1 wherein slicing the 5G network by network resource allocation includes employing an end-to-end slice management architecture across the radio access network, carrier network and core network; determining an end-to-end isolation implementation mode of the network slice; the isolation implementation mode comprises an access network isolation mode, a bearing network isolation mode and a core network isolation mode.

8. The method for low delay jitter of a power terminal based on time synchronization of a 5G power system according to claim 1, wherein the method for slice network resource allocation for QoS of a user comprises:

constructing an E2E-enabled slice network system architecture;

9. A 5G power system time synchronization based low delay jitter apparatus for a power terminal, comprising:

10. A computer readable storage medium having stored thereon a computer program which, when executed by a processor, implements a 5G power system time synchronization based power terminal low delay jitter method according to any of claims 1-7.