CN116112877B - High coverage rate ammeter data acquisition method - Google Patents
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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
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- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
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- 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
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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 disclosure 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-IoT 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 device for improving the data acquisition accuracy of an ammeter, which accurately utilizes a high-reliability terminal to provide relay transmission service for a low-reliability terminal, thereby improving the data acquisition accuracy.
The application provides a device for improving the data acquisition accuracy of an ammeter, which comprises the following steps: 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 steps of mutually matching and collecting data 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 packet error rate which does not meet the meter reading requirement into class 1 terminal groups, and puts 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.
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 membership MaxMember of the paging group, the total number F of meter reading terminals of the current building, the set_F of meter reading terminals 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, groupNum;
Step 2.3, judging whether the number of class 1 terminals in the set_F is smaller 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, groupNum class 1 terminals are selected from the set_F, and the selection method of the GroupNum class 1 terminals is as follows: first, numType1 class 1 terminals are classified into The number of the combination is f, wherein the f is in the range of 0,1, 2,Then calculate the sum of the distances between GroupNum terminals in each combination
Wherein i is the number of the terminal in the F-th combination, then one combination with the largest value is selected from the combination, namely, the 1-class terminals in the corresponding combination are GroupNum selected 1-class terminals, then the corresponding GroupNum 1-class terminals are put into each List (j), then the GroupNum 1-class terminals are deleted from set_F, and then the step 2.4 is skipped;
step 2.4, calculate NumType1 minus GroupNum to obtain R, repeat the following operations for 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 not exceeding MaxMember and closest to the List;
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, execute NumType2 rounds of 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 mutual inductance resource set is a sum of time-frequency code resources used by each terminal of the class 1 terminal to transmit a detection signal in the paging packet, the class 1 terminal only needs to transmit the detection signal on a time-frequency code resource scheduled by the terminal itself, and the class 2 terminal needs to detect the detection signal transmitted by each terminal on the mutual inductance resource set.
Preferably, in the step 4, the detection signal resources of the class 1 terminals in the paging group are distributed in the same TTI, and each terminal resource is obtained by dividing the sum of time-frequency code resources in one TTI by the number of 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 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 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 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 ListPair list, where the ListPair list determines a class 2 terminal as an accompanying terminal for each class 1 terminal.
Preferably, in the step 5, the scheduling method a schedules the reporting of the table reading data by the accompanying terminal in the paging group, and the scheduling method B schedules the reporting of the table reading data by the non-accompanying terminal, which is specifically implemented as follows:
Step 5.1B, firstly adopting a scheduling method a to schedule resources for each paired terminal in each paging group ListPair, wherein the scheduling method a specifically operates as follows: scheduling of each paired terminal is completed ListPair one by one, for each paired terminal, 1 class of terminal transmission resources in the paired terminal are scheduled firstly, then the transmission resources are configured as 2 class of terminal receiving resources, and double transmission resources are configured for 2 class of terminals, wherein the use of the double transmission resources is according to the following rules:
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 double sending resources by reducing the code rate, wherein the method for reducing the code rate comprises any one or two of reducing the modulation order and improving the code redundancy ratio;
And 5.2B, scheduling the non-accompanying terminal to report the list data by adopting a scheduling method B, and scheduling corresponding transmission data for each member in the LISTSINGLE list according to a conventional scheduling method.
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 LISTSINGLE belongs to the class 1 terminal, the transmission reliability is improved by reducing the transmission code rate.
The application also 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 packet error rate which does not meet the meter reading requirement into class 1 terminal groups, and puts 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 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 each paging group ListPair, wherein the scheduling method a specifically operates as follows:
Scheduling each paired terminal is completed ListPair one by one, and for each paired terminal, scheduling 1 class of terminal transmission resources in the paired terminal, then configuring the transmission resources as 2 class of terminal receiving resources, and configuring double transmission resources for the 2 class of terminals;
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: scheduling respective transmission data for each member in the LISTSINGLE list;
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.
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 membership MaxMember of the paging group, the total number F of meter reading terminals of the current building, the set_F of meter reading terminals 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, groupNum;
Step 2.3, judging whether the number of class 1 terminals in the set_F is smaller 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, groupNum class 1 terminals are selected from the set_F, and the selection method of the GroupNum class 1 terminals is as follows: first, numType1 class 1 terminals are classified into The number of the combination is f, wherein the f is in the range of 0,1, 2,Then calculate the sum of the distances between GroupNum terminals in each combination
Wherein i is the number of the terminal in the F-th combination, then one combination with the largest value is selected from the combination, namely, the 1-class terminals in the corresponding combination are GroupNum selected 1-class terminals, then the corresponding GroupNum 1-class terminals are put into each List (j), then the GroupNum 1-class terminals are deleted from set_F, and then the step 2.4 is skipped;
step 2.4, calculate NumType1 minus GroupNum to obtain R, repeat the following operations for 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 not exceeding MaxMember and closest to the List;
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, execute NumType2 rounds of 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 TTI, and the resource of each terminal is obtained by dividing the sum of time-frequency code resources in one TTI by the number of 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 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 LISTSINGLE; if not, a terminal Q with the best detection quality for the terminal Z in the list PL2 is found 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 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 ListPair list, where the ListPair 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 LISTSINGLE belongs to the class 1 terminal, the transmission reliability is improved by reducing the transmission code rate.
Compared with the prior art, the application has the beneficial effects that:
the application realizes signal detection among terminals by establishing the co-location area paging group and adding the enhancement function in the access flow triggered by paging, and finally, the relay transmission service is provided for the low-reliability terminal by accurately utilizing the high-reliability terminal, thereby improving the data acquisition accuracy.
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 specification, illustrate embodiments of the application and together with the description serve to explain 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.
Detailed Description
The application will be further described 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 electric meter, 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 packet 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 packet error rate which does not meet the meter reading requirement into class 1 terminal groups, and puts 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 method for improving the data acquisition accuracy of the ammeter, 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 membership MaxMember of the paging group, the total number F of meter reading terminals of the current building, the set_F of meter reading terminals 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, groupNum;
Step 2.3, judging whether the number of class 1 terminals in the set_F is smaller 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, groupNum class 1 terminals are selected from the set_F, and the selection method of the GroupNum class 1 terminals is as follows: first, numType1 class 1 terminals are classified into The number of the combination is f, wherein the f is in the range of 0,1, 2,Then calculate the sum of the distances between GroupNum terminals in each combination
Wherein i is the number of the terminal in the F-th combination, then one combination with the largest value is selected from the combination, namely, the 1-class terminals in the corresponding combination are GroupNum selected 1-class terminals, then the corresponding GroupNum 1-class terminals are put into each List (j), then the GroupNum 1-class terminals are deleted from set_F, and then the step 2.4 is skipped;
step 2.4, calculate NumType1 minus GroupNum to obtain R, repeat the following operations for 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 not exceeding MaxMember and closest to the List;
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, execute NumType2 rounds of 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 an upward rounding function, e.g., F/MaxMember is equal to 2.5, and ceil (2.5) is equal to 3.
In the step 2.4.2, the List (j) insertion elements are inserted from the front or from the back, and are arranged according to the insertion sequence, and each time the distance between the terminal X and the first element in each queue List (j) is calculated to be the first terminal of the 1 class.
In the step 2.5, the Axis 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 Axis (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, namely the 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 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 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 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 ListPair list, where the ListPair list determines a class 2 terminal as an accompanying terminal for each class 1 terminal.
In 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, in 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 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 each paging group ListPair, wherein the scheduling method a specifically operates as follows:
scheduling of each paired terminal is completed ListPair one by one, for each paired terminal, 1 class of terminal transmission resources in the paired terminal are scheduled firstly, then the transmission resources are configured as 2 class of terminal receiving resources, and double transmission resources are configured for 2 class of terminals, wherein the use of the double transmission resources is according to the following rules:
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 by the non-accompanying terminal by adopting a scheduling method B, and scheduling corresponding transmission data for each member in the LISTSINGLE list according to a conventional scheduling method, wherein preferably, if the member in LISTSINGLE belongs to a class 1 terminal, the transmission reliability is improved by reducing the transmission code rate.
Specific embodiments of the present application are described below with reference to 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 MaxMember 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, 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.
Next, ceil (F/MaxMember) is calculated to obtain that the total number GroupNum of paging groups of the current building is equal to 3, list (1), list (2) and List (3) of paging groups are established, and information of List (1), list (2) and List (3) is emptied.
Next, it is determined whether the number of class 1 terminals in set_f is 3 or less (GroupNum takes a value of 3), and if the determination result is no, 3 (GroupNum takes a value of 3) class 1 terminals 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, then the distances between every two terminals in each combination (if one combination comprises 3 members, every two of the 3 members represent 3 distances) are calculated in the 405483668029440000 combinations, and finally the selection is carried outThe largest corresponding combination is put into List (1), list (2) and List (3), and each List is provided with a 1-class terminal, then the 3 1-class terminals are deleted from set_F, and then step 2.4 is carried out.
Next, according to the calculation of steps 2.4.1-2.4.2, the rest of class 1 terminals are placed in List (1), list (2) and List (3), according to step 2.5, the gravity coordinate value Axis (j) of each queue based on the existing element in the queue is calculated, step 2.6 is executed, and according to steps 2.6.1-2.6.2, class 2 terminals are placed in List (1), list (2) and List (3), in this embodiment, it is assumed that by the calculation, each List member is distributed as follows:
List (1): terminals 1-8, terminals 21-90, 78 total (including 8 class 1 terminals, 70 class 2 terminals);
List (2): terminals 9-15, 91-160, 77 total (including 7 class 1 terminals, 70 class 2 terminals);
List (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, the paging control module is divided into three paging groups, the paging group 1 is responsible for paging the List (1), the paging group 2 is responsible for paging the List (2), and the paging group 3 is responsible for paging the List (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 NBIOT as an example, one TTI 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 corresponds to RE1-RE21 in the TTI, terminal 2 corresponds to RE22-RE42 in the TTI, and terminal 8 corresponds to RE148-RE168 in the TTI; 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 TTI, terminal 2 corresponds to RE24-RE47 in the TTI, and terminal 7 corresponds to RE145-RE168 in the TTI; because paging group 3 includes 5 class 1 terminals, the mutual inductance resource allocated to each terminal is 33 REs, that is, terminal 1 in 5 class 1 terminals corresponds to RE1-RE33 in the TTI, terminal 2 corresponds to RE34-RE66 in the TTI, terminal 5 corresponds to RE136-RE168 in the TTI. And scheduling the class 1 terminals in the paging group to transmit detection signals in the RE belonging to the paging group in the TTI, and detecting the resources of each class 1 terminal in the TTI by the class 2 terminals in the paging group and reporting 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, obtaining a terminal List PL [ corresponding to List (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 ordering 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 21-90 are ordered from small to large), wherein the number of the terminals in the PL2 is PL2 num (70), and clearing LISTSINGLE, LISTPAIR list information.
Step 5.2A is then performed, i.e. the construction of ListPair is completed by performing 8 rounds of "steps 5.2.1A-5.2.2A", in this embodiment, it is assumed that ListPair 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 place the terminals in the list PL2 into LISTSINGLE, at which point LISTSINGLE 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, and a scheduling method a is adopted first to schedule resources for each paired terminal in ListPair in the paging group 1, where the scheduling method a specifically operates as follows: the scheduling of each paired terminal ListPair is completed one by one (scheduling 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 }) for each paired terminal, scheduling the transmission resources of class 1 terminals in the paired terminal first, then configuring the transmission resources as the reception resources of class 2 terminals, and configuring double the transmission resources for the class 2 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 the non-accompanying terminal (namely the LISTSINGLE list terminal) by adopting a scheduling method B to report the list data, specifically scheduling corresponding transmission data for each member in the LISTSINGLE list according to conventional scheduling, and if the member in LISTSINGLE belongs to the 1-class 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 above is only a preferred embodiment of the present application, and is not intended to limit the present application, but various modifications and variations can be made to the present application by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle 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 within the scope of the application as defined by the claims of the present application.
Claims (8)
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 packet error rate which does not meet the meter reading requirement into class 1 terminal groups, and puts 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 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 each paging group ListPair, wherein the scheduling method a specifically operates as follows:
Scheduling each paired terminal is completed ListPair one by one, and for each paired terminal, scheduling 1 class of terminal transmission resources in the paired terminal, then configuring the transmission resources as 2 class of terminal receiving resources, and configuring double transmission resources for the 2 class of terminals;
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: scheduling respective transmission data for each member in the LISTSINGLE list;
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.
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 membership MaxMember of the paging group, the total number F of meter reading terminals of the current building, the set_F of meter reading terminals 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 cei l (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, groupNum;
Step 2.3, judging whether the number of class 1 terminals in the set_F is smaller 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, groupNum class 1 terminals are selected from the set_F, and the selection method of the GroupNum class 1 terminals is as follows: first, numType1 class 1 terminals are classified into The number of the combination is f, wherein the f takes the values of 0,1, 2, the number of the combination is not repeatedThen calculate the sum of the distances between GroupNum terminals in each combination
Wherein i is the number of the terminal in the F-th combination, then one combination with the largest value is selected from the combination, namely, the 1-class terminals in the corresponding combination are GroupNum selected 1-class terminals, then the corresponding GroupNum 1-class terminals are put into each List (j), then the GroupNum 1-class terminals are deleted from set_F, and then the step 2.4 is skipped;
step 2.4, calculate NumType1 minus GroupNum to obtain R, repeat the following operations for 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 not exceeding MaxMember and closest to the List;
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, execute NumType2 rounds of 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 2 types of 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 LISTSINGLE; if not, a terminal Q with the best detection quality for the terminal Z in the list PL2 is found 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 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 ListPair list, where the ListPair list 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 member in LISTSINGLE belongs to the class 1 terminal, the transmission reliability is improved by reducing the transmission code rate.
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