CN116112877A - High coverage rate ammeter data acquisition method - Google Patents
High coverage rate ammeter data acquisition method Download PDFInfo
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- CN116112877A CN116112877A CN202310134603.XA CN202310134603A CN116112877A CN 116112877 A CN116112877 A CN 116112877A CN 202310134603 A CN202310134603 A CN 202310134603A CN 116112877 A CN116112877 A CN 116112877A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- 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
- H04W4/08—User group management
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/01—Protocols
- H04L67/12—Protocols specially adapted for proprietary or special-purpose networking environments, e.g. medical networks, sensor networks, networks in vehicles or remote metering networks
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q9/00—Arrangements in telecontrol or telemetry systems for selectively calling a substation from a main station, in which substation desired apparatus is selected for applying a control signal thereto or for obtaining measured values therefrom
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q2209/00—Arrangements in telecontrol or telemetry systems
- H04Q2209/60—Arrangements in telecontrol or telemetry systems for transmitting utility meters data, i.e. transmission of data from the reader of the utility meter
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
Abstract
The application provides a high coverage rate ammeter data acquisition method, which comprises the following steps: the data receiving module counts the packet error rate of each terminal, and puts the terminals with the error rate which does not meet the meter reading requirement into class 1 terminal groups, and the rest terminals into class 2 terminal groups; the paging group management module divides the co-location area terminals into a paging group; paging control module pages each paging group; the enhanced access management module determines a mutual inductance resource set of each paging group, schedules 1-class terminals in the paging group to send detection signals, schedules 2-class terminals in the paging group to detect the detection signals, and reports detection signal detection results by the 2-class terminals; and the scheduling module schedules class 2 terminals as the accompanying terminals for class 1 terminals according to the detection result, schedules the accompanying terminal pair reporting list reading data in the paging group according to the scheduling method A, and schedules the non-accompanying terminal pair reporting list reading data according to the scheduling method B. And a high-reliability terminal is utilized to provide relay transmission service for a low-reliability terminal, so that the data acquisition accuracy is improved.
Description
Technical Field
The application relates to the technical field of ammeter data acquisition, in particular to a high-coverage ammeter data acquisition method.
Background
The statements in this section merely provide background information related to the present application and may not necessarily constitute prior art.
The water, electricity and gas are used as basic energy sources for current folk life and permeate into the aspects of social life, and the application requirements of the water, the electricity and the gas are met as long as the living places of people exist.
Obviously, water, electricity and gas services require continuous operation and maintenance in addition to the prior facility construction, wherein the most important operation and maintenance matters comprise meter reading, equipment abnormality monitoring and maintenance and the like.
However, conventional meter reading methods face at least the following problems:
firstly, resident users are quite scattered, and a great amount of manpower is required to be input for on-site meter reading;
secondly, the degree of meter reading and disturbing the resident is large, and inconvenience is brought to the life of residents;
thirdly, the error existing in manual meter reading is large, and the metering data is easy to be inaccurate;
fourth, manual meter reading cannot provide accurate data, monitoring is not facilitated, leakage cannot be found in time, and production and marketing errors are caused;
therefore, a more efficient meter reading scheme is needed to support the operation and maintenance management of the later stages of water, electricity and gas, and meter reading technology based on NB-I oT and LoRa is generated, however, because the water, electricity and gas meters are generally located in deep buildings and have weaker signals, the conventional wireless meter reading scheme based on point-to-point in the meter reading mode is easy to cause partial area blind coverage or time-period blind coverage due to insufficient deep coverage, so that normal meter reading cannot be performed, and finally the data acquisition accuracy of the water, electricity and gas meters is influenced, and further the operation and maintenance efficiency is influenced.
Disclosure of Invention
In order to solve the problems, the application provides a high coverage rate ammeter data acquisition method, which accurately utilizes a high-reliability terminal to provide relay transmission service for a low-reliability terminal, so that data acquisition accuracy is improved.
The application provides a high coverage rate ammeter data acquisition method, which comprises the following steps:
step 1, a data receiving module counts the packet error rate of each terminal, and puts the terminals with the error rate which does not meet the meter reading requirement into class 1 terminal groups, and the rest terminals into class 2 terminal groups;
step 2, the paging group management module divides the terminal in the co-location area into a paging group;
step 3, paging control module pages each paging group;
step 4, the enhanced access management module determines the mutual inductance resource set of each paging group, schedules the 1-class terminals in the paging group to send detection signals, schedules the 2-class terminals in the paging group to detect the detection signals, and reports detection signal detection results by the 2-class terminals;
step 5, the scheduling module schedules class 2 terminals as the accompanying terminals for class 1 terminals according to the detection result, schedules the accompanying terminal pair reporting reading table data in the paging group according to the scheduling method A, and schedules the non-accompanying terminal pair reporting reading table data according to the scheduling method B;
the meter reading requirements are as follows: uploading meter reading data according to a preset period by the terminal, uploading meter reading data in preset number CN periods each time, and enabling the false alarm rate of the terminal to be not more than the preset value;
the mutual inductance resource set is the sum of time-frequency code resources used by each terminal of the 1-class terminals for transmitting detection signals in the paging group, the 1-class terminals only need to transmit detection signals on the time-frequency code resources scheduled by the terminals, and the 2-class terminals need to detect the detection signals transmitted by each terminal on the mutual inductance resource set;
in the step 5, the reporting of the reading data to the reporting of the accompanying terminal in the paging group is scheduled according to the scheduling method A, and the reporting of the reading data to the reporting of the non-accompanying terminal is scheduled according to the scheduling method B, and the specific method is as follows:
step 5.1B, firstly adopting a scheduling method A to schedule resources for each paired terminal in Li stPai r in each paging group, wherein the scheduling method A specifically operates as follows:
completing the scheduling of each pairing terminal of Li stPai one by one, scheduling 1-class terminal transmission resources in the pairing terminal for each pairing terminal, then configuring the transmission resources as 2-class terminal receiving resources, and configuring double transmission resources for the 2-class terminal;
and 5.2B, scheduling the report list reading data of the non-accompanying terminal by adopting a scheduling method B, wherein the scheduling method B specifically comprises the following steps of: a corresponding transmission data is scheduled for each member in the list of listsi ng e.
Preferably, in the step 1, the statistical method of the packet error rate is as follows: the number of the latest K reporting periods is divided by K to obtain the packet error rate.
Preferably, in the step 2, the specific method for dividing the co-location area terminals into one paging group is as follows:
step 2.1, determining the maximum member number MaxMember of the paging group, the total number F of meter reading terminals of the current building, a meter reading terminal set_F of the current building, the number NumTYPE1 of class 1 terminals in the set_F, and the number NumTYPE2 of class 2 terminals in the set_F;
step 2.2, calculating ceil (F/MaxMember) to obtain the total number GroupNum of paging groups of the current building, establishing each paging group list Li st (j), and clearing each list information, wherein j is a list number, and the values are 1, 2;
step 2.3, judging whether the number of class 1 terminals in the set_F is less than or equal to GroupNum;
if yes, the class 1 terminals are put into Li st (j), the number of the class 1 terminals in each Li st (j) list is not more than 1, the class 1 terminals are deleted from set_F, and then step 2.5 is skipped;
if not, selecting GroupNum class 1 terminals from the set_F, wherein the GroupNum class 1 terminals are selected by the following method: first, numTYPE1 terminals are classified into 1 class
The number of the combination is f, wherein the f is in the range of +.>
Then calculating the sum of the distances between every two terminals of the GroupNum terminals in each combination
step 2.4, calculating NumTYPE1 and subtracting GroupNum to obtain R, and repeating the following operations of R rounds:
step 2.4.1, taking out a class 1 terminal X from the set_F, and deleting the terminal from the set_F;
step 2.4.2, calculating the distance between the terminal X and the first element in each queue Li st (j), and putting the terminal X into a list with the number of queue members not exceeding the nearest distance in the MaxMember;
step 2.5, calculating gravity coordinate values axis (j) of all the queues based on the existing elements in the queues, and setting the gravity coordinate values to infinity if no element exists in the queues;
step 2.6, executing NumTYPE2 to perform the following operations:
step 2.6.1, taking out a class 2 terminal Y from the set_F, and deleting the class 2 terminal Y from the set_F;
step 2.6.2, calculating the distance between Y and the center of gravity of each queue, then sorting the queues from small to large based on the distance, and then placing Y in the front queue which does not exceed the paging packet length.
Preferably, in the step 4, the detection signal resources of the class 1 terminals in the paging group are scheduled to be distributed in the same TT I, and the resource of each terminal is obtained by dividing the sum of time-frequency code resources in one TT I by the number of the class 1 terminals in the paging group.
Preferably, in the step 4, if the paging group has no class 2 terminal, the paging group is not required to be allocated with a mutual inductance resource set, and the processing is directly performed according to the conventional access.
Preferably, in the step 5, the specific method for the scheduling module to schedule the class 2 terminal as the accompanying terminal for the class 1 terminal according to the detection result is as follows:
step 5.1A, acquiring a terminal list PL of a paging group, and ordering 1-class terminals in the terminal list from big to small according to the packet error rate to form a list PL1, wherein the number of the terminals in the PL1 is PL1_num; forming a list PL2 by using 2 types of terminals in the terminal list, wherein the number of the terminals in the PL2 is PL2_num, and Li stSi ng L e and L i stPa i r list information is emptied;
step 5.2A, performing the following operations of the pl1_num round:
step 5.2.1A, acquiring a first terminal Z in the list PL1, and deleting the terminal Z from the list;
5.2.2A, judging whether the PL2 list is empty, if so, putting the terminal Z into Li stSi ng l e; if not, a terminal Q with the best detection quality for the terminal Z in the list PL2 is found out according to the detection result, the terminal Q is determined to be an accompanying terminal of the terminal Z, { terminal Z, terminal Q } is taken as an element to be put into Li stPai r, and then Q is deleted from PL 2;
and 5.3A, putting the terminals in the list PL2 into Li stS i ng l e, and outputting a Li stPai r list, wherein the Li stPai r list determines a class 2 terminal as an accompanying terminal for each class 1 terminal.
Preferably, in step 5.1B, a time span between the transmission resource of the class 2 terminal and the transmission resource of the class 1 terminal is minimized, so as to further reduce power consumption of the class 2 terminal.
Preferably, in the step 5.2B, if the member in the listsi ng l e belongs to the class 1 terminal, the transmission reliability is improved by reducing the transmission code rate.
Preferably, in the step 5.1B, the resource usage of the double transmission resource is according to the following rule:
if the class 2 terminal correctly receives the information sent by the class 1 terminal on the receiving resource, the class 2 terminal sends and reports the information of the class 2 terminal and the information of the class 1 terminal respectively accounting for half of the resource;
if the class 2 terminal cannot correctly receive the information sent by the class 1 terminal on the receiving resource, the class 2 terminal sends the information by adopting the double sending resource through reducing the code rate, and the method for reducing the code rate comprises any one or two of reducing the modulation order and improving the code redundancy duty ratio.
Compared with the prior art, the beneficial effects of this application are:
according to the method and the device, the co-location area paging group is established, the enhancement function is added in the paging triggering access flow, signal detection between terminals is achieved, and finally, the high-reliability terminal is accurately utilized to provide relay transmission service for the low-reliability terminal, so that data acquisition accuracy is improved.
Drawings
The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiments of the application and together with the description serve to explain the application and do not constitute an undue limitation to the application.
Figure 1 is a flow chart of a method of one embodiment of the present application,
FIG. 2 is a schematic diagram of the system components of an embodiment of the present application.
The specific embodiment is as follows:
the present application is further described below with reference to the drawings and examples.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments in accordance with the present disclosure. As used herein, the singular is also intended to include the plural unless the context clearly indicates otherwise, and furthermore, it is to be understood that the terms "comprises" and/or "comprising" when used in this specification are taken to specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof.
In the present disclosure, terms such as "upper", "lower", "left", "right", "front", "rear", "vertical", "horizontal", "side", "bottom", and the like indicate an azimuth or a positional relationship based on the azimuth or the positional relationship shown in the drawings, are merely relational terms determined for convenience in describing structural relationships of the various components or elements of the present disclosure, and do not denote any one of the components or elements of the present disclosure, and are not to be construed as limiting the present disclosure.
As shown in fig. 1 to 2, the present application provides a device for improving accuracy of data collection of an ammeter, including: the system comprises a data receiving module, a paging group management module, a paging control module, an enhanced access management module and a scheduling module, wherein the functions of the modules are as follows:
the data receiving module is used for counting the packet error rate of each terminal, and placing the terminals with the error rate which does not meet the meter reading requirement into a class 1 terminal group, and placing the rest terminals into a class 2 terminal group;
the paging group management module is used for dividing the co-location area terminals into one paging group;
the paging control module is used for paging each paging group;
the enhanced access management module is used for determining a mutual inductance resource set of each paging group, scheduling 1-class terminals in the paging group to send detection signals, scheduling 2-class terminals in the paging group to detect the detection signals, and reporting detection signal detection results by the 2-class terminals;
and the scheduling module schedules 2 types of terminals as accompanying terminals for 1 type of terminals according to the detection result, schedules the accompanying terminals in the paging group to report the read list data according to the scheduling method A, and schedules the non-accompanying terminals to report the read list data according to the scheduling method B.
The steps of mutually matched data acquisition of the modules are as follows:
step 1, a data receiving module counts the packet error rate of each terminal, and puts the terminals with the error rate which does not meet the meter reading requirement into class 1 terminal groups, and the rest terminals into class 2 terminal groups;
step 2, the paging group management module divides the terminal in the co-location area into a paging group;
step 3, paging control module pages each paging group;
step 4, the enhanced access management module determines the mutual inductance resource set of each paging group, schedules the 1-class terminals in the paging group to send detection signals, schedules the 2-class terminals in the paging group to detect the detection signals, and reports detection signal detection results by the 2-class terminals;
and 5, the scheduling module schedules a class 2 terminal as an accompanying terminal for the class 1 terminal according to the detection result, schedules the accompanying terminal pair reporting the reading table data in the paging group according to the scheduling method A, and schedules the non-accompanying terminal pair reporting the reading table data according to the scheduling method B.
The application also provides a high coverage rate ammeter data acquisition method, and the specific steps are consistent with the steps 1 to 5.
Specifically, in the step 1, the statistical method of the packet error rate is as follows: the number of the latest K reporting periods is divided by K to obtain the packet error rate.
Specifically, in the step 2, the specific method for dividing the co-location area terminals into one paging group is as follows:
step 2.1, determining the maximum member number MaxMember of the paging group, the total number F of meter reading terminals of the current building, a meter reading terminal set_F of the current building, the number NumTYPE1 of class 1 terminals in the set_F, and the number NumTYPE2 of class 2 terminals in the set_F;
step 2.2, calculating ce il (F/MaxMember) to obtain the total number GroupNum of paging groups of the current building, establishing each paging group list Li st (j), and clearing each list information, wherein j is a list number, and the values are 1, 2;
step 2.3, judging whether the number of class 1 terminals in the set_F is less than or equal to GroupNum;
if yes, the class 1 terminals are put into Li st (j), the number of the class 1 terminals in each Li st (j) list is not more than 1, the class 1 terminals are deleted from set_F, and then step 2.5 is skipped;
if not, selecting GroupNum class 1 terminals from the set_F, wherein the GroupNum class 1 terminals are selected by the following method: first, numTYPE1 terminals are classified into 1 class
The number of the combination is f, wherein the f is in the range of +.>
Then calculating the sum of the distances between every two terminals of the GroupNum terminals in each combination
step 2.4, calculating NumTYPE1 and subtracting GroupNum to obtain R, and repeating the following operations of R rounds:
step 2.4.1, taking out a class 1 terminal X from the set_F, and deleting the terminal from the set_F;
step 2.4.2, calculating the distance between the terminal X and the first element in each queue Li st (j), and putting the terminal X into a list with the number of queue members not exceeding the nearest distance in the MaxMember;
step 2.5, calculating gravity coordinate values axis (j) of all the queues based on the existing elements in the queues, and setting the gravity coordinate values to infinity if no element exists in the queues;
step 2.6, executing NumTYPE2 to perform the following operations:
step 2.6.1, taking out a class 2 terminal Y from the set_F, and deleting the class 2 terminal Y from the set_F;
step 2.6.2, calculating the distance between Y and the center of gravity of each queue, then sorting the queues from small to large based on the distance, and then placing Y in the front queue which does not exceed the paging packet length.
In step 2.2, the ceil function is a round-up function, e.g. F/MaxMember equals 2.5, and then the ce ii (2.5) equals 3.
In the step 2.4.2, the Li st (j) insertion elements are inserted from the front or from the rear, and are arranged according to the insertion sequence, and each time the distance between the terminal X and the first element in each queue Li st (j) is calculated to be the first 1-class terminal.
In the step 2.5, the Axi s function is a gravity center calculating function, for example, n elements are contained in a certain queue M, the numbers are 1 to n, the coordinate values thereof are (x 1, y1, z 1), (x 2, y2, z 2) … (xn, yn, zn), and the gravity center coordinate value Axi (M) thereof is { [ (x1+x2+ … +xn)/n ], [ (y1+y2+ … +yn)/n ], [ (z1+z2+ … +zn)/n ] }.
In the step 4, the mutual inductance resource set is the sum of time-frequency code resources used by each terminal of the class 1 terminals in the paging packet for transmitting detection signals, the class 1 terminals only need to transmit detection signals on the time-frequency code resources scheduled by the terminals themselves, and the class 2 terminals need to detect the detection signals transmitted by each terminal on the mutual inductance resource set, i.e. the class 2 terminals can detect the detection signals of all the class 1 terminals in the paging packet once and report the detection signals.
In the step 4, the detection signal resources of the class 1 terminals in the paging group are distributed in the same TTI, wherein the TTI is a transmission interval, and each terminal resource is obtained by dividing the sum of time-frequency code resources in one TTI by the number of the class 1 terminals in the paging group so as to prevent mutual interference.
In the step 4, if the paging group has no class 2 terminal, the paging group is not required to be allocated with a mutual inductance resource set, and the processing is directly carried out according to the conventional access.
In the step 5, the specific method for the scheduling module to schedule the class 2 terminal as the accompanying terminal for the class 1 terminal according to the detection result is as follows:
step 5.1A, acquiring a terminal list PL of a paging group, and ordering 1-class terminals in the terminal list from big to small according to the packet error rate to form a list PL1, wherein the number of the terminals in the PL1 is PL1_num; sorting the class 2 terminals in the terminal list from small to large according to the packet error rate to form a list PL2, wherein the number of the terminals in the PL2 is PL2_num, and clearing list information of Li stSi ng l e and Li stPai r;
step 5.2A, performing the following operations of the pl1_num round:
step 5.2.1A, acquiring a first terminal Z in the list PL1, and deleting the terminal Z from the list;
5.2.2A, judging whether the PL2 list is empty, if so, putting the terminal Z into Li stSi ng l e; if not, a terminal Q with the best detection quality for the terminal Z in the list PL2 is found out according to the detection result, the terminal Q is determined to be an accompanying terminal of the terminal Z, and { terminal Z, terminal Q } is taken as an element to be put into Li stPai r, and then Q is deleted from PL 2;
and 5.3A, putting the terminals in the list PL2 into Li stSi ng l e, and outputting a Li stPai r list, wherein the Li stPai r list determines a class 2 terminal as an accompanying terminal for each class 1 terminal.
In the step 5.2.2A, each class 2 terminal in the same paging group detects the probe signals sent by all class 1 terminals, and the measurement quality value (such as the received power, the signal to noise ratio, the signal to interference and noise ratio) obtained after the detection is the best, and in the step 5.1A, the class 2 terminals in the terminal list are ordered according to the packet error rate from small to large to form a list PL2, but the arrangement order of the list PL2 is only the order, and the accompanying terminal is determined to be ineffective in the step 5.2.2A.
In the step 5, the reporting of the reading data to the reporting of the accompanying terminal in the paging group is scheduled according to the scheduling method A, and the reporting of the reading data to the reporting of the non-accompanying terminal is scheduled according to the scheduling method B, and the specific method is as follows:
step 5.1B, firstly adopting a scheduling method A to schedule resources for each paired terminal in Li stPai r in each paging group, wherein the scheduling method A specifically operates as follows:
and completing the scheduling of each pairing terminal of the Li stPai r one by one, scheduling 1-class terminal transmission resources in the pairing terminal for each pairing terminal, then configuring the transmission resources as 2-class terminal receiving resources, and configuring double transmission resources for the 2-class terminal, wherein the resource use of the double transmission resources is as follows:
if the class 2 terminal correctly receives the information sent by the class 1 terminal on the receiving resource, the class 2 terminal sends and reports the information of the class 2 terminal and the information of the class 1 terminal respectively accounting for half of the resource, if the class 2 terminal cannot correctly receive the information sent by the class 1 terminal on the receiving resource, the class 2 terminal sends the information of the class 2 terminal by reducing the code rate and adopting double sending resources, the method for reducing the code rate comprises any one or two combination of reducing the modulation order and improving the coding redundancy ratio, and preferably, the time span of the sending resource of the class 2 terminal and the sending resource of the class 1 terminal is minimized so as to further reduce the power consumption of the class 2 terminal;
and 5.2B, scheduling the report list data of the non-accompanying terminal by adopting a scheduling method B, and scheduling corresponding transmission data for each member in the ListSi ng l e list according to a conventional scheduling method, wherein preferably, if the member in the ListSi ng l e belongs to the 1-class terminal, the transmission reliability is improved by reducing the transmission code rate.
Specific embodiments of the present application are described below with specific examples:
in this embodiment, it is assumed that one meter reading base station covers 100 buildings, and each building includes 200 power meter reading of users, that is, each building corresponds to 200 meter reading terminals. The following is an example of improving the accuracy of data acquisition of the ammeter in the meter reading process of the first building, and describes the specific implementation method of the invention:
firstly, the data receiving module counts the packet error rate of each terminal, in this embodiment, according to the example that the terminal reports meter reading data once every 12 hours, the meter reading request is within 72 hours recently (the value of K is 6 in the K reporting periods), the packet error rate of meter reading is not greater than 1/3, 200 meter reading terminals (corresponding to terminal 1, terminal 2 and terminal 200) in the first building are sent at a certain moment, wherein 20 packet error rates do not meet the meter reading request (corresponding to terminal 1, terminal 2 and terminal 20), then they are put into the group 1 terminal group, and the rest 180 terminals are put into the group 2 terminal group (corresponding to terminal 21, terminal 22 and terminal 200).
Next, the paging group management module divides the co-located area terminals into a paging group, and the specific practice refers to step 2.1 to step 2.6:
first, the maximum membership maxmembrane of the paging group (assuming that the maximum membership of one paging group is 80 in this embodiment), the total number of meter reading terminals F of the current building (200 in this embodiment), the Set of meter reading terminals set_f of the current building (terminal 1, terminal 2,..once., terminal 200), the number of class 1 terminals NumType1 in the set_f (20 in this embodiment), and the number of class 2 terminals NumType2 in the set_f (180 in this embodiment) are determined.
Then, calculating ce il (F/MaxMember) to obtain the total number GroupNum of paging groups of the current building equal to 3, establishing each paging group list Li st (1), li st (2) and Li st (3), and clearing information of Li st (1), li st (2) and Li st (3).
Next, it is determined whether the number of class 1 terminals in set_f is 3 or less (the value of GroupNum is 3), and if the determination result is no, 3 class 1 terminals (the value of GroupNum is 3) are selected from set_f, and since there are 20 class 1 terminals in this embodiment,
the value is 405483668029440000, namely 20 class 1 terminals can be divided into 405483668029440000 mutually non-repeated 3 member combinations, and the distance between every two terminals in each combination (if one combination comprises 3 members, every two of the 3 members represent 3 distances) in the 405483668029440000 combinations is calculated, and finally the following steps are selected>
The largest corresponding combination, and put the 3 class 1 terminals corresponding to the combination pair into Li st (1), li st (2), li st (3), one class 1 terminal for each Li st, then delete the 3 class 1 terminals from set_f, and then jump to step 2.4.
Next, according to the calculation of step 2.4.1-2.4.2, the rest 1 class of terminals are put into Li st (1), li st (2), li st (3), according to step 2.5, the gravity center coordinate value Ax is s (j) of each queue based on the existing element in the queue is calculated, step 2.6 is executed, according to step 2.6.1-2.6.2, the 2 class of terminals are put into Li st (1), li st (2), li st (3), in this embodiment, it is assumed that each Li st member is distributed as follows by the above calculation:
li st (1): terminals 1-8, terminals 21-90, 78 total (including 8 class 1 terminals, 70 class 2 terminals);
li st (2): terminals 9-15, 91-160, 77 total (including 7 class 1 terminals, 70 class 2 terminals);
li st (3): terminals 16-20, terminals 161-200, 45 total (including 5 class 1 terminals, 40 class 2 terminals).
Then, the paging control module pages each paging group, in this embodiment, three paging groups are divided, paging group 1 is responsible for paging Li st (1), paging group 2 is responsible for paging Li st (2), and paging group 3 is responsible for paging Li st (3).
And then, the enhanced access management module determines a mutual inductance resource set of each paging group, schedules 1-class terminals in the paging group to send detection signals, schedules 2-class terminals in the paging group to detect the detection signals, and reports detection signal detection results by the 2-class terminals.
Taking NB I OT as an example, one TT I includes 14×12=168 REs, and since the paging group 1 includes 8 class 1 terminals, the mutual inductance resource allocated to each terminal is 21 REs, that is, terminal 1 in each class 1 terminal of 8 terminals corresponds to RE1-RE21 in the TT I, terminal 2 corresponds to RE22-RE42 in the TT I, & number of the terminal 8 corresponds to RE148-RE168 in the TT I; since the paging group 2 includes 7 class 1 terminals, the mutual inductance resource allocated to each terminal is 24 REs, that is, terminal 1 in 7 class 1 terminals corresponds to RE1-RE24 in the TT I, terminal 2 corresponds to RE24-RE47 in the TT I, and terminal 7 corresponds to RE145-RE168 in the TT I. Because the paging group 3 includes 5 class 1 terminals, the mutual inductance resource allocated to each terminal is 33 REs, that is, terminal 1 in the 5 class 1 terminals corresponds to RE1-RE33 in the TT I, terminal 2 corresponds to RE34-RE66 in the TT I, and terminal 5 corresponds to RE136-RE168 in the TT I. The class 1 terminals in the paging group are scheduled to send detection signals in REs affiliated to the TTI, while the class 2 terminals in the paging group detect the resources of each class 1 terminal in the TTI and report the detection result of each user to a scheduling module;
then, the scheduling module schedules the class 2 terminal as the accompanying terminal for the class 1 terminal according to the detection result, and the paging group 1 is taken as an example for explanation, and the specific method is as follows: firstly, executing step 5.1A, and obtaining a terminal list PL [ corresponding to Li st (1) ] of a paging group 1, namely comprising terminals 1-8, terminals 21-90 and 78 terminals, wherein 8 terminals are class 1 terminals and 70 terminals are class 2 terminals ], ordering the class 1 terminals in the terminal list according to the packet error rate from large to small to form a list PL1 (if the terminals 1-8 are ordered according to the large to small), and the number of the terminals in the PL1 is PL1_num (8); and sorting the class 2 terminals in the terminal list from small to large according to the packet error rate to form a list PL2 (if the terminals are 21-90 after sorting from small to large), wherein the number of the terminals in the PL2 is PL2 num (70), and clearing list information of Li stSi ng l e and Li stPai r.
Step 5.2A is then performed, i.e. the construction of Li stPai r is completed by performing 8 rounds of steps 5.2.1A-5.2.2A, in this embodiment, it is assumed that Li stPai r corresponds to { { terminal 1, terminal 21}, { terminal 2, terminal 22}, { terminal 3, terminal 23}, { terminal 4, terminal 24}, { terminal 5, terminal 25}, { terminal 6, terminal 26}, { terminal 7, terminal 27}, { terminal 8, terminal 28 }.
Step 5.3A is then performed to put the terminals in list PL2 into Li stSi ng l e, which now includes terminals 29-90.
Then, the accompanying terminal in the paging group is scheduled to report the data of the reading list according to the scheduling method A, and the non-accompanying terminal is scheduled to report the data of the reading list according to the scheduling method B, the specific method is as follows:
step 5.1B is executed first, a scheduling method a is adopted first, resources are scheduled for each paired terminal in the listpai r in the paging group 1, and the scheduling method a specifically operates as follows: the scheduling of each paired terminal of the L i stpar is completed one by one (paired terminals { terminal 1, terminal 21}, { terminal 2, terminal 22}, { terminal 3, terminal 23}, { terminal 4, terminal 24}, { terminal 5, terminal 25}, { terminal 6, terminal 26}, { terminal 7, terminal 27}, { terminal 8, terminal 28 }) is sequentially scheduled, and for each paired terminal, the transmission resources of 1 class of terminals in the paired terminals are scheduled first, and then the transmission resources are configured as the reception resources of 2 class of terminals, and double the transmission resources are configured for the 2 class of terminals.
The resource usage of the double transmission resource is according to the following rules: if the class 2 terminal receives the information sent by the class 1 terminal correctly on the receiving resource, the class 2 terminal sends and reports the information of the class 2 terminal and the information of the class 1 terminal respectively accounting for half of the resource, and if the class 2 terminal cannot receive the information sent by the class 1 terminal correctly on the receiving resource, the class 2 terminal sends the information of the class 2 terminal by reducing the code rate and adopting double sending resources, wherein the method for reducing the code rate comprises the steps of reducing the modulation order and/or improving the code redundancy duty ratio.
And then, scheduling a non-accompanying terminal (namely, a terminal of the ListSi ng l e list) by adopting a scheduling method B to report the list data, specifically scheduling corresponding transmission data for each member in the ListS i ng l e list according to conventional scheduling, and if the member in the ListSi ng l e belongs to a class 1 terminal, improving the transmission reliability by reducing the transmission code rate.
In this embodiment, after the 8 class 1 terminals in the paging group 1 are transmitted through the precise relay, 7 terminals realize correct reception, and the paging group 2 and the paging group 3 all receive correctly, so after the invention is adopted, the data acquisition accuracy is improved from 90% to 99.5%, and the accuracy and reliability of the data acquisition of the ammeter are greatly improved.
According to the method, the common location area paging group is established, the enhanced function is added in the paging triggering access flow, the signal detection between the terminals is realized, and finally, the high-reliability terminal is accurately utilized to provide relay transmission service for the low-reliability terminal, so that the data acquisition accuracy is effectively improved.
The foregoing is merely a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and variations may be made to the present application by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application should be included in the protection scope of the present application.
While the foregoing description of the embodiments of the present application has been presented in conjunction with the drawings, it should be understood that it is not intended to limit the scope of the application, but rather, it is intended to cover all modifications or variations which may be resorted to without undue burden to those skilled in the art, having the benefit of the present application.
Claims (9)
1. The data acquisition method of the high coverage rate ammeter is characterized by comprising the following steps of:
step 1, a data receiving module counts the packet error rate of each terminal, and puts the terminals with the error rate which does not meet the meter reading requirement into class 1 terminal groups, and the rest terminals into class 2 terminal groups;
step 2, the paging group management module divides the terminal in the co-location area into a paging group;
step 3, paging control module pages each paging group;
step 4, the enhanced access management module determines the mutual inductance resource set of each paging group, schedules the 1-class terminals in the paging group to send detection signals, schedules the 2-class terminals in the paging group to detect the detection signals, and reports detection signal detection results by the 2-class terminals;
step 5, the scheduling module schedules class 2 terminals as the accompanying terminals for class 1 terminals according to the detection result, schedules the accompanying terminal pair reporting reading table data in the paging group according to the scheduling method A, and schedules the non-accompanying terminal pair reporting reading table data according to the scheduling method B;
the meter reading requirements are as follows: uploading meter reading data according to a preset period by the terminal, uploading meter reading data in preset number CN periods each time, and enabling the false alarm rate of the terminal to be not more than the preset value;
the mutual inductance resource set is the sum of time-frequency code resources used by each terminal of the 1-class terminals for transmitting detection signals in the paging group, the 1-class terminals only need to transmit detection signals on the time-frequency code resources scheduled by the terminals, and the 2-class terminals need to detect the detection signals transmitted by each terminal on the mutual inductance resource set;
in the step 5, the reporting of the reading data to the reporting of the accompanying terminal in the paging group is scheduled according to the scheduling method A, and the reporting of the reading data to the reporting of the non-accompanying terminal is scheduled according to the scheduling method B, and the specific method is as follows:
step 5.1B, scheduling resources are scheduled for each pairing terminal in the ListPair in each paging group by adopting a scheduling method A, wherein the scheduling method A specifically comprises the following steps:
completing the scheduling of each pairing terminal of the ListPair one by one, scheduling 1-class terminal transmission resources in the pairing terminal for each pairing terminal, then configuring the transmission resources as 2-class terminal receiving resources, and configuring double transmission resources for the 2-class terminal;
and 5.2B, scheduling the report list reading data of the non-accompanying terminal by adopting a scheduling method B, wherein the scheduling method B specifically comprises the following steps of: each member of the list is scheduled with corresponding transmission data.
2. The high coverage electricity meter data collection method of claim 1, wherein:
in the step 1, the statistical method of the packet error rate is as follows: the number of the latest K reporting periods is divided by K to obtain the packet error rate.
3. The high coverage electricity meter data collection method of claim 1, wherein:
in the step 2, the specific method for dividing the co-location area terminals into one paging group is as follows:
step 2.1, determining the maximum member number MaxMember of the paging group, the total number F of meter reading terminals of the current building, a meter reading terminal set_F of the current building, the number NumTYPE1 of class 1 terminals in the set_F, and the number NumTYPE2 of class 2 terminals in the set_F;
step 2.2, calculating ceil (F/MaxMember) to obtain the total number GroupNum of paging groups of the current building, establishing a List (j) of each paging group, and clearing each List information, wherein j is a List number, and the values are 1, 2.
Step 2.3, judging whether the number of class 1 terminals in the set_F is less than or equal to GroupNum;
if yes, putting the class 1 terminals into List (j), wherein the number of the class 1 terminals in each List (j) is not more than 1, deleting the class 1 terminals from set_F, and then jumping to step 2.5;
if not, selecting GroupNum class 1 terminals from the set_F, wherein the GroupNum class 1 terminals are selected by the following method: first, numTYPE1 terminals are classified into 1 class
The number of the combination is f, wherein the f is in the range of +.>
Then calculating the sum of the distances between every two terminals of the GroupNum terminals in each combination
step 2.4, calculating NumTYPE1 and subtracting GroupNum to obtain R, and repeating the following operations of R rounds:
step 2.4.1, taking out a class 1 terminal X from the set_F, and deleting the terminal from the set_F;
step 2.4.2, calculating the distance between the terminal X and the first element in each queue List (j), and putting the terminal X into a List with the number of queue members which is not more than the number of queue members and is closest to the number of queue members in the MaxMember;
step 2.5, calculating a barycentric coordinate value Axis (j) of each queue based on the existing elements in the queue, and setting the barycentric coordinate value to infinity if no element exists in the queue;
step 2.6, executing NumTYPE2 to perform the following operations:
step 2.6.1, taking out a class 2 terminal Y from the set_F, and deleting the class 2 terminal Y from the set_F;
step 2.6.2, calculating the distance between Y and the center of gravity of each queue, then sorting the queues from small to large based on the distance, and then placing Y in the front queue which does not exceed the paging packet length.
4. The high coverage electricity meter data collection method of claim 1, wherein:
in the step 4, the detection signal resources of the class 1 terminals in the paging group are scheduled to be distributed in the same TTI, and the resources of each terminal are obtained by dividing the sum of time-frequency code resources in one TTI by the number of the class 1 terminals in the paging group.
5. The high coverage electricity meter data collection method of claim 4, wherein:
in the step 4, if the paging group has no class 2 terminal, the paging group is not required to be allocated with a mutual inductance resource set, and the processing is directly carried out according to the conventional access.
6. The high coverage electricity meter data collection method of claim 5, wherein:
in the step 5, the specific method for the scheduling module to schedule the class 2 terminal as the accompanying terminal for the class 1 terminal according to the detection result is as follows:
step 5.1A, acquiring a terminal list PL of a paging group, and ordering 1-class terminals in the terminal list from big to small according to the packet error rate to form a list PL1, wherein the number of the terminals in the PL1 is PL1_num; forming a list PL2 by using the class 2 terminals in the terminal list, wherein the number of the terminals in the PL2 is PL2_num, and clearing ListSingle, listPair list information;
step 5.2A, performing the following operations of the pl1_num round:
step 5.2.1A, acquiring a first terminal Z in the list PL1, and deleting the terminal Z from the list;
step 5.2.2A, judging whether the PL2 list is empty, if so, putting the terminal Z into the ListSingle; if not, a terminal Q with the best detection quality for the terminal Z in the list PL2 is found out according to the detection result, the terminal Q is determined to be an accompanying terminal of the terminal Z, { terminal Z, terminal Q } is taken as an element to be put into a ListPair, and then Q is deleted from the PL 2;
step 5.3A, put the terminals in the list PL2 into ListSingle and output a list of ListPair, which determines a class 2 terminal as an accompanying terminal for each class 1 terminal.
7. The high coverage electricity meter data collection method of claim 1, wherein:
in the step 5.1B, the time span between the transmission resource of the class 2 terminal and the transmission resource of the class 1 terminal is minimized, so as to further reduce the power consumption of the class 2 terminal.
8. The high coverage electricity meter data collection method of claim 1, wherein:
in the step 5.2B, if the members in the ListSingle belong to the class 1 terminal, the transmission reliability is improved by reducing the transmission code rate.
9. The high coverage electricity meter data collection method of claim 1, wherein:
in the step 5.1B, the resource usage of the double transmission resource is according to the following rule:
if the class 2 terminal correctly receives the information sent by the class 1 terminal on the receiving resource, the class 2 terminal sends and reports the information of the class 2 terminal and the information of the class 1 terminal respectively accounting for half of the resource;
if the class 2 terminal cannot correctly receive the information sent by the class 1 terminal on the receiving resource, the class 2 terminal sends the information by adopting the double sending resource through reducing the code rate, and the method for reducing the code rate comprises any one or two of reducing the modulation order and improving the code redundancy duty ratio.
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| WO2016003174A1 (en) * | 2014-07-01 | 2016-01-07 | 엘지전자(주) | Method for transmitting and receiving a group message in wireless communication system and device therefor |
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| CN113364883A (en) * | 2020-11-06 | 2021-09-07 | 山东天创亿联智能科技有限公司 | High-reliability cloud meter reading method |
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