CN114745610B - Device for improving data acquisition accuracy of ammeter - Google Patents
Device for improving data acquisition accuracy of ammeter Download PDFInfo
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- CN114745610B CN114745610B CN202210347472.9A CN202210347472A CN114745610B CN 114745610 B CN114745610 B CN 114745610B CN 202210347472 A CN202210347472 A CN 202210347472A CN 114745610 B CN114745610 B CN 114745610B
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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
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- 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 device for improving ammeter data acquisition accuracy, include: 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 a co-location area paging group is established, an enhanced function is added in an access flow triggered by paging, signal detection between terminals is realized, and finally a high-reliability terminal is accurately 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 device for improving ammeter data acquisition accuracy.
Background
The statements in this section merely provide background information related to the present disclosure and may not necessarily constitute prior art.
Water, electricity and gas are taken as basic energy sources of modern people and permeate into the aspects of social life, and as long as people live in places, the water, electricity and gas have application requirements.
Obviously, the water, electricity and gas services need continuous operation and maintenance in addition to the former facility construction, wherein the most important operation and maintenance items include meter reading, equipment abnormality monitoring and maintenance and the like.
However, the conventional meter reading method has at least the following problems:
firstly, resident users are dispersed, and a large amount of manpower is required to be invested for on-site meter reading;
secondly, the degree of disturbing residents by meter reading of the residents is large, and inconvenience is brought to the lives of the residents;
thirdly, errors existing in manual meter reading are large, and inaccurate measured data is easy to realize;
fourthly, accurate data cannot be provided through manual meter reading, monitoring is not facilitated, leakage cannot be found in time, and production and marketing are poor;
therefore, a more efficient meter reading scheme is needed to support operation and maintenance management of water, electricity and gas in the later period, a meter reading technology based on NB-IoT and LoRa is developed, however, because the water, electricity and gas meter is generally located in the deep place of a building, and signals are weaker, therefore, a traditional meter reading mode is based on a point-to-point wireless meter reading scheme, which is prone to cause blind coverage of partial areas or blind coverage of time intervals due to insufficient deep coverage, so that normal meter reading is not possible, the accuracy of data acquisition of the water, electricity and gas meter is finally affected, and the operation and maintenance efficiency is further affected, therefore, a device for improving the accuracy of data acquisition of the electricity meter is provided, and the problem needs to be solved in the prior art urgently.
Disclosure of Invention
This application has proposed the device that promotes ammeter data acquisition accuracy in order to solve above-mentioned problem, utilizes the highly reliable terminal to provide relay transmission service for the low reliable terminal accurately to promote the data acquisition accuracy.
The application provides a device for improving ammeter data acquisition accuracy, include: the method 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 data acquisition steps of the modules are matched with each other as follows:
step 1, a data receiving module counts the packet error rate of each terminal, and places the terminals with the false alarm rate not meeting the meter reading requirement into a class 1 terminal group, and places the rest terminals into a class 2 terminal group;
step 2, the paging group management module divides the terminals in the co-location area into a paging group;
step 3, the paging control module pages each paging group;
step 4, the enhanced access management module determines mutual inductance resource sets of all paging groups, schedules the 1 type terminals in the paging groups to send detection signals, schedules the 2 type terminals in the paging groups to detect the detection signals, and reports detection signal detection results by the 2 type terminals;
and step 5, the scheduling module schedules the class-2 terminal as an accompanying terminal for the class-1 terminal according to the detection result, schedules the reporting and reading meter data of the accompanying terminal in the paging group according to a scheduling method A, and schedules the reporting and reading meter data of the non-accompanying terminal according to a scheduling method B.
Preferably, in step 1, the statistical method of the packet error rate is as follows: and in the last K reporting periods, dividing the number of the data error periods by K to obtain the packet error rate.
Preferably, in step 2, the specific method for dividing the terminals in the co-located area into a paging group includes:
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 the type1 terminals in the Set _ F, and the number NumType2 of the type2 terminals in the Set _ F;
step 2.2, calculating ceil (F/MaxMember) to obtain the total paging group number GroupNum of the current building, establishing each paging group List (j), and emptying each List information, wherein j is a List number and takes a value of 1, 2, 1.
Step 2.3, judging whether the number of the type1 terminals in the Set _ F is less than or equal to the GroupNum;
if yes, putting the class-1 terminals into Lists (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 the step 2.5;
if not, selecting 1 type terminals of GroupNum from the Set _ F, wherein the selection method of the 1 type terminals of the GroupNum comprises the following steps: firstly, dividing the NumType1 class-1 terminals into
The combinations are not repeated, the number of the combinations is f, wherein the range of the f is 0, 1, 2
Then, the distance sum between every two terminals of the group Num terminals in each combination is calculated
step 2.4, calculating the NumType1 minus GroupNum to obtain R, and repeating the following operations of the R round:
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 the List with the shortest distance in the MaxMember and the number of queue members not exceeding the number of queue members;
step 2.5, calculating the barycentric coordinate value Axis (j) of each queue based on the existing elements in the queue, and if no element exists in the queue, setting the barycentric coordinate value to be infinite;
step 2.6, executing NumType2 round 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;
and 2.6.2, calculating the distance between Y and the gravity center of each queue, sequencing each queue from small to large based on the distance, and then putting Y into the front queue which does not exceed the length of the paging packet.
Preferably, in step 4, the mutual inductance resource set is a sum of time-frequency code resources used by each terminal of the class 1 terminals to transmit sounding signals in the paging packet, the class 1 terminals only need to transmit sounding signals on the time-frequency code resources scheduled by the terminals themselves, and the class 2 terminals need to detect the sounding signals transmitted by each terminal on the mutual inductance resource set.
Preferably, in step 4, the sounding signal resources of the 1-class terminals in the paging group are distributed in the same TTI, and each terminal resource is obtained by dividing the total time-frequency code resource in one TTI by the number of the 1-class terminals in the paging group.
Preferably, in step 4, if the paging group has no class 2 terminal, it is not necessary to allocate a mutual inductance resource set to the paging group, and the processing may be performed directly according to a conventional access.
Preferably, in step 5, the specific method for the scheduling module to schedule the class-2 terminal as the companion 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 sorting 1 type of terminals in the terminal list from large to small according to packet error rate to form a list PL1, wherein the number of the terminals in the PL1 is PL1_ num; constructing a list PL2 by 2 types of terminals in the terminal list, wherein the number of the terminals in the PL2 is PL2_ num, and emptying list Single and ListPair list information;
step 5.2A, the following operations are performed in 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, finding out a terminal Q with the best detection quality for the terminal Z in the list PL2 according to the detection result, determining the terminal Q as an accompanying terminal of the terminal Z, putting { the terminal Z, the terminal Q } as an element into ListPair, and then deleting Q from the list PL 2;
and step 5.3A, putting the terminals in the list PL2 into ListSingle, and outputting a ListPair list, wherein the ListPair list determines a class 2 terminal as an accompanying terminal for each class 1 terminal.
Preferably, in the step 5, scheduling the reporting and reading data of the accompanying terminal in the paging group according to the scheduling method a, and scheduling the reporting and reading data of the non-accompanying terminal according to the scheduling method B, specifically, the method includes:
step 5.1B, firstly, scheduling resources for each paired terminal in ListPair in each paging group by using a scheduling method a, where the scheduling method a specifically operates as follows: scheduling of each paired terminal of ListPair is completed one by one, for each paired terminal, firstly scheduling 1 type terminal sending resources in the paired terminal, then configuring the sending resources as receiving resources of 2 type terminals, and configuring double sending resources for the 2 type terminals, wherein the resource usage of the double sending 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, which respectively account for half of the resource; if the type2 terminal can not correctly receive the information sent by the type1 terminal on the receiving resource, the type2 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 combinations of reducing the modulation order and improving the code redundancy ratio;
and 5.2B, scheduling the reported meter reading data of the unconventional terminal by using a scheduling method B, and scheduling corresponding transmission data for each member in the ListSingle list according to a conventional scheduling method.
Preferably, 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.
Preferably, in the step 5.2B, if the members in the list single belong to the class 1 terminal, the transmission reliability is improved by reducing the transmission code rate.
Compared with the prior art, the beneficial effect of this application is:
according to the method and the device, the co-location area paging group is established, the enhancement function is added in the access process triggered by paging, signal detection between 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 improved.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, are included to provide a further understanding of the application, and the description of the exemplary embodiments and illustrations of the application are intended to explain the application and are not intended to limit 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 a system configuration according to an embodiment of the present application.
The specific implementation mode is as follows:
the present application is further described with reference to the following 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 example embodiments according to the present disclosure. As used herein, the singular forms "a", "an", and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.
In the present disclosure, terms such as "upper", "lower", "left", "right", "front", "rear", "vertical", "horizontal", "side", "bottom", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only relational terms determined for convenience in describing structural relationships of the parts or elements of the present disclosure, and do not refer to any parts or elements of the present disclosure, and are not to be construed as limiting the present disclosure.
As shown in fig. 1-2, the present application provides a device for improving the accuracy of data collection of an electricity meter, comprising: 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, putting the terminals with the false alarm rates which do not meet the meter reading requirement into a class 1 terminal group, and putting the rest terminals into a class 2 terminal group;
a paging group management module for dividing the co-located zone terminals into a paging group;
a paging control module for paging each paging group;
the enhanced access management module is used for determining mutual inductance resource sets of all paging groups, scheduling type1 terminals in the paging groups to send detection signals, scheduling type2 terminals in the paging groups to detect the detection signals, and reporting detection signal detection results by the type2 terminals;
and the scheduling module schedules the class-2 terminal as an accompanying terminal for the class-1 terminal according to the detection result, schedules the reporting and reading data of the accompanying terminal in the paging group according to a scheduling method A, and schedules the reporting and reading data of the non-accompanying terminal according to a scheduling method B.
The data acquisition steps of the modules in mutual cooperation are as follows:
step 1, a data receiving module counts the packet error rate of each terminal, and places the terminals with the false alarm rate which does not meet the meter reading requirement into a class 1 terminal group, and places the rest terminals into a class 2 terminal group;
step 2, the paging group management module divides the terminals in the co-location area into a paging group;
step 3, the paging control module pages each paging group;
step 4, the enhanced access management module determines mutual inductance resource sets of all paging groups, schedules the 1 type terminals in the paging groups to send detection signals, schedules the 2 type terminals in the paging groups to detect the detection signals, and reports detection signal detection results by the 2 type terminals;
and step 5, the scheduling module schedules the class-2 terminal as an accompanying terminal for the class-1 terminal according to the detection result, schedules the reporting and reading meter data of the accompanying terminal in the paging group according to a scheduling method A, and schedules the reporting and reading meter data of the non-accompanying terminal according to a scheduling method B.
The application also provides a method for improving the accuracy of the data acquisition of the electric meter, 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 includes: and in the last K reporting periods, dividing the number of the data error periods by K to obtain the packet error rate.
Specifically, in step 2, the specific method for dividing the terminals in the co-located area into one paging group includes:
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 the type1 terminals in the Set _ F, and the number NumType2 of the type2 terminals in the Set _ F;
step 2.2, calculating ceil (F/MaxMember) to obtain the total paging group number GroupNum of the current building, establishing each paging group List (j), and emptying each List information, wherein j is a List number and takes a value of 1, 2, 1.
Step 2.3, judging whether the number of the type1 terminals in the Set _ F is less than or equal to the GroupNum;
if yes, putting the class-1 terminals into Lists (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 the step 2.5;
if not, selecting group num type1 terminals from the Set _ F, wherein the selection method of the group num type1 terminals comprises the following steps: firstly, dividing the NumType1 class-1 terminals into
The combinations are not repeated, the number of the combinations is f, wherein the range of the f is 0, 1, 2
Then, the distance sum between every two terminals of the group Num terminals in each combination is calculated
step 2.4, calculating the NumType1 minus GroupNum to obtain R, and repeating the following operations of the R round:
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 the List with the shortest distance in the MaxMember and the number of queue members not exceeding the number of queue members;
step 2.5, calculating the barycentric coordinate value Axis (j) of each queue based on the existing elements in the queue, and if no element exists in the queue, setting the barycentric coordinate value to be infinite;
step 2.6, executing 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;
and 2.6.2, calculating the distance between Y and the gravity center of each queue, sequencing each queue from small to large based on the distance, and then putting Y into the front queue which does not exceed the length of the paging packet.
In step 2.2, the ceil function is an ceiling function, for example, if F/MaxMember is equal to 2.5, ceil (2.5) is equal to 3.
In said step 2.4.2, the List (j) insertion elements are inserted from the front or from the back, and are arranged in the insertion order, and the distance between the terminal X and the first element in each queue List (j) is the first type1 terminal each time.
In step 2.5, the Axis function is a gravity center calculation function, for example, a certain queue M includes n elements, which are numbered 1 to n, and coordinate values thereof are (x 1, y1, z 1), (x 2, y2, z 2) \8230 { (xn, yn, zn), and a gravity center coordinate value thereof Axis (M) is { [ (x 1+ x2+ \8230 + xn)/n ], [ (y 1+ y2+ \8230, + yn)/n ], [ (z 1+ z2+ \8230, + zn ] }.
In the step 4, the mutual inductance resource set is the sum of time-frequency code resources used by each class 1 terminal in the paging group to send detection signals, the class 1 terminal only needs to send detection signals on the time-frequency code resource scheduled by the terminal itself, and the class 2 terminal needs to detect the detection signals sent by each terminal on the mutual inductance resource set, that is, the class 2 terminal detects the detection signals of all class 1 terminals in the paging group once and reports the detection signals.
In the step 4, the detecting signal resources of the 1 type terminals in the paging group are distributed in the same TTI, namely the transmission interval, and each terminal resource is obtained by dividing the total time frequency code resource in one TTI by the number of the 1 type terminals in the paging group so as to prevent mutual interference.
In the step 4, if the paging group has no class 2 terminal, it is not necessary to allocate a mutual inductance resource set to the paging group, and the processing is directly performed according to the conventional access.
In step 5, the specific method for the scheduling module to schedule the class-2 terminal as the companion terminal for the class-1 terminal according to the detection result is as follows:
step 5.1A, obtaining a terminal list PL of a paging group, and sequencing 1 type of terminals in the terminal list from large to small according to packet error rate to form a list PL1, wherein the number of the terminals in the PL1 is PL1_ num; sorting 2 types of terminals in the terminal list from small to large according to packet error rate to form a list PL2, wherein the number of the terminals in the PL2 is PL2_ num, and emptying list Single and ListPair list information;
step 5.2A, the following operations are performed in 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, finding out a terminal Q with the best detection quality for the terminal Z in the list PL2 according to the detection result, determining the terminal Q as a companion terminal of the terminal Z, putting { the terminal Z, the terminal Q } as an element into ListPair, and then deleting Q from the list PL 2;
and step 5.3A, putting the terminals in the list PL2 into ListSingle, and outputting a ListPair list, wherein the ListPair 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 sounding signals sent by all class-1 terminals, and obtains the best measurement quality value (received power, signal-to-noise ratio, signal-to-interference-and-noise ratio, and the like) after detection, in the step 5.1A, the class-2 terminals in the terminal list are sorted from small to large according to the packet error rate to form a list PL2, only the arrangement sequence of the list PL2 is used, and the terminal does not function in the step 5.2.2a.
In the step 5, scheduling the reporting and reading data of the accompanying terminal in the paging group according to the scheduling method a, and scheduling the reporting and reading data of the non-accompanying terminal according to the scheduling method B, specifically, the method includes:
step 5.1B, firstly, scheduling resources for each paired terminal in ListPair in each paging group by using a scheduling method a, where the scheduling method a specifically operates as follows:
scheduling of each paired terminal of ListPair is completed one by one, for each paired terminal, firstly scheduling 1 type terminal sending resources in the paired terminal, then configuring the sending resources as receiving resources of 2 type terminals, and configuring double sending resources for the 2 type terminals, wherein the resource usage of the double sending resources is according to the following rules:
if the type2 terminal correctly receives the information sent by the type1 terminal on the receiving resource, the type2 terminal sends and reports the information of the type2 terminal and the information of the type1 terminal respectively occupying half of the resource, if the type2 terminal cannot correctly receive the information sent by the type1 terminal on the receiving resource, the type2 terminal sends the information of the type2 terminal by adopting double sending resources by reducing the code rate, wherein the method for reducing the code rate comprises any one or two combinations of reducing the modulation order and improving the coding redundancy ratio, preferably, the time span of the sending resource of the type2 terminal and the sending resource of the type1 terminal is minimized, so as to further reduce the power consumption of the type2 terminal;
and step 5.2B, scheduling the reported meter reading data by the non-accompanying terminal by adopting a scheduling method B, scheduling corresponding transmission data for each member in the ListSingle list according to a conventional scheduling method, and preferably, if the members in the ListSingle belong to the class 1 terminal, improving the transmission reliability 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, each building includes 200 users of power meter reading, that is, each building corresponds to 200 meter reading terminals. The specific implementation method of the invention is illustrated below by taking the improvement of the accuracy of electric meter data acquisition in the meter reading process of the first building as an example:
firstly, a data receiving module counts the packet error rate of each terminal, in this embodiment, according to the example that the terminal reports the meter reading data once every 12 hours, the meter reading requirement is within the last 72 hours (corresponding to that K in the K reporting periods takes a value of 6), the meter reading packet error rate is not more than 1/3, 200 meter reading terminals (corresponding to terminal 1, terminal 2,.. And terminal 200) in a first building are sent at a certain time, wherein 20 packet error rates do not meet the meter reading requirement (corresponding to terminal 1, terminal 2,.. And terminal 20), then the terminals are put into a type1 terminal group, and the remaining 180 terminals are put into a type2 terminal group (corresponding to terminal 21, terminal 22,.. And terminal 200).
Then, the paging group management module divides the co-located area terminals into a paging group, and specifically, refer to step 2.1 to step 2.6:
first, the maximum number of members MaxMember of the paging group (assuming that the maximum number of members of one paging group in this embodiment is 80), the total number of meter reading terminals F of the current building (200 in this embodiment), a meter reading terminal Set _ F of the current building (terminal 1, terminal 2, terminal.
Then, ceil (F/MaxMember) is calculated to obtain the total paging group number GroupNum of the current building equal to 3, the respective paging group lists List (1), list (2), list (3) are established, and the information of List (1), list (2), list (3) is cleared.
Next, it is determined whether the number of class 1 terminals in Set _ F is less than or equal to 3 (GroupNum takes a value of 3), and if not, 3 class 1 terminals (GroupNum takes a value of 3) are selected from Set _ F, and since there are 20 class 1 terminals in this embodiment,
the value is 405483668029440000, that is, 20 class-1 terminals can be divided into 405483668029440000 non-repetitive 3-member combinations, then the distance between every two terminals in each combination is calculated in the 405483668029440000 combinations (one combination comprises 3 members, and 3 distances exist between every two of the 3 members), and finally, the distance is selected
And the maximum corresponding combination is obtained, 3 class-1 terminals corresponding to the combination pair are placed into List (1), list (2) and List (3), each List has one class-1 terminal, then the 3 class-1 terminals are deleted from Set _ F, and then the step 2.4 is skipped.
Next, according to the calculation in step 2.4.1-2.4.2, the remaining class 1 terminals are placed in List (1), list (2), list (3), according to step 2.5, the barycentric coordinate value Axis (j) of the existing element in the queue is calculated for each queue, step 2.6 is executed, according to step 2.6.1-2.6.2, the class 2 terminals are placed in List (1), list (2), list (3), in this embodiment, it is assumed that through the above calculation, the distribution of the respective List members is as follows:
list (1): terminals 1-8, terminals 21-90, 78 in total (including 8 class 1 terminals, 70 class 2 terminals);
list (2): terminals 9-15, terminals 91-160, 77 in total (including 7 class 1 terminals, 70 class 2 terminals);
list (3): and the number of the terminals 16-20 is 45 (including 5 type1 terminals and 40 type2 terminals), and the terminals 161-200 are connected with each other.
Then, the paging control module pages each paging group, which is divided into three paging groups in this embodiment, where 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).
Then, the enhanced access management module determines mutual inductance resource sets of all paging groups, schedules the 1 type terminals in the paging groups to send detection signals, schedules the 2 type terminals in the paging groups to detect the detection signals, and reports detection signal detection results by the 2 type terminals.
Taking NBIOT as an example, one TTI includes 14 × 12=168 REs, and since 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 type-1 terminals, the mutual inductance resource distributed to each terminal is 24 REs, that is, the terminal 1 in the 7 type-1 terminals corresponds to the RE1-RE24 in the TTI, the terminal 2 corresponds to the RE24-RE47 in the TTI, and the terminal 7 corresponds to the RE145-RE168 in the TTI; since 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 5 class-1 terminals corresponds to RE1-RE33 in the TTI, terminal 2 corresponds to RE34-RE66 in the TTI, and terminal 5 corresponds to RE136-RE168 in the TTI; scheduling 1 type terminals in the paging group to send detection signals in the RE (resource allocation) of which the TTI belongs to the terminals, and scheduling 2 type terminals in the paging group to detect the resources of each 1 type terminal in the TTI and report the detection result of each user to a scheduling module;
then, the scheduling module schedules the class-2 terminals for the class-1 terminals as the accompanying terminals according to the detection result, which is described by taking the paging group 1 as an example, and specifically includes the following steps: firstly, step 5.1A is executed, a terminal List PL [ corresponding List (1) of a paging group 1 is obtained, namely, the terminal List PL comprises 78 terminals 1-8, 21-90, wherein 8 terminals are 1 type terminals, and 70 terminals are 2 type terminals, the 1 type terminals in the terminal List are sorted from large to small according to the packet error rate to form a List PL1 (if the terminals are 1-8 after being sorted from large to small), and the number of the terminals in the PL1 is PL1_ num (8); sorting the 2 types of 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 being sorted from small to large), wherein the number of the terminals in the PL2 is PL2_ num (70), and list single and list Pair list information is emptied.
Step 5.2A is then performed, i.e. the construction of ListPair is completed by performing 8 rounds of "step 5.2.1 a" to step 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} }.
Then step 5.3A is performed to place the terminals in the list PL2 into a list single, which now includes terminals 29-90.
Then, scheduling the reporting and reading meter data of the accompanying terminal in the paging group according to a scheduling method A, and scheduling the reporting and reading meter data of the non-accompanying terminal according to a scheduling method B, which comprises the following specific steps:
step 5.1B is executed first, and a scheduling method a is adopted first to schedule resources for each paired terminal in ListPair in paging group 1, where the scheduling method a specifically operates as follows: the scheduling of each paired terminal of the ListPair is completed one by one (the 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}, and { terminal 8, terminal 28}, in sequence), for each paired terminal, the transmission resource of the 1-class terminal in the paired terminal is scheduled first, then the transmission resource is configured as the reception resource of the 2-class terminal, and double transmission resources are configured for the 2-class terminal.
The resource usage of the double transmission resource is according to the following rules: if the type2 terminal correctly receives the information sent by the type1 terminal on the receiving resource, the type2 terminal sends and reports the information of the type2 terminal and the information of the type1 terminal respectively occupying half of the resource, if the type2 terminal cannot correctly receive the information sent by the type1 terminal on the receiving resource, the type2 terminal sends the information of the type2 terminal by adopting double sending resources by reducing the code rate, and the method for reducing the code rate comprises the steps of reducing the modulation order and/or improving the code redundancy ratio.
And then, scheduling the non-accompanying terminal (namely, the terminal of the ListSingle list) by adopting a scheduling method B to the reported meter reading data, specifically scheduling corresponding transmission data for each member in the ListSingle list according to conventional scheduling, and if the members in the ListSingle list belong to the class 1 terminal, improving the transmission reliability by reducing the transmission code rate.
In this embodiment, after 8 class-1 terminals in the paging group 1 are transmitted through accurate relay, 7 terminals realize correct reception, and the paging group 2 and the paging group 3 all realize correct reception, so that after the method and the device are adopted, the accuracy of data acquisition is improved to 99.5% from the original 90%, and the accuracy and the reliability of data acquisition of the electric meter are greatly improved.
The invention can be seen that, by adopting the method of the invention, the signal detection between terminals is realized by establishing the paging group of the common location area and adding the enhancement function in the access flow triggered by paging, and finally the high-reliability terminal is accurately utilized to provide the relay transmission service for the low-reliability terminal, thereby effectively improving the data acquisition accuracy.
The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present application shall be included in the protection scope of the present application.
Although the specific embodiments of the present application have been described with reference to the accompanying drawings, it is not intended to limit the scope of the present application, and it should be understood that those skilled in the art can make various modifications and variations without departing from the spirit and scope of the present application.
Claims (8)
1. Promote device of ammeter data acquisition accuracy, its characterized in that includes: the method 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 data acquisition steps of the modules are matched with each other as follows:
step 1, a data receiving module counts the packet error rate of each terminal, and places the terminals with the false alarm rate which does not meet the meter reading requirement into a class 1 terminal group, and places the rest terminals into a class 2 terminal group;
step 2, the paging group management module divides the co-location area terminal into a paging group;
step 3, the paging control module pages each paging group;
step 4, the enhanced access management module determines mutual inductance resource sets of all paging groups, schedules the 1 type terminals in the paging groups to send detection signals, schedules the 2 type terminals in the paging groups to detect the detection signals, and reports detection signal detection results by the 2 type terminals;
step 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 reporting meter reading data of the accompanying terminal in the paging group according to a scheduling method A, and schedules the reporting meter reading data of the non-accompanying terminal according to a scheduling method B;
the meter reading requirement is as follows: uploading meter reading data according to a preset period by a terminal, uploading the meter reading data within CN periods of a preset value each time, wherein the false alarm rate of the terminal is 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 class 1 terminals in the paging group to send detection signals, the class 1 terminals only need to send detection signals on the time-frequency code resources scheduled by the terminals, and the class 2 terminals need to detect the detection signals sent by each terminal on the mutual inductance resource set;
in the step 5, scheduling the reporting and reading data of the accompanying terminal in the paging group according to the scheduling method a, and scheduling the reporting and reading data of the non-accompanying terminal according to the scheduling method B, specifically, the method includes:
step 5.1B, firstly adopting a scheduling method A to schedule resources for each paired terminal in ListPair in each paging group, wherein the scheduling method A is specifically operated as follows:
scheduling of each paired terminal of ListPair is completed one by one, for each paired terminal, firstly scheduling 1 type terminal sending resources in the paired terminal, then configuring the sending resources as receiving resources of 2 type terminals, and configuring double sending resources for the 2 type terminals, wherein the resource usage of the double sending resources is according to the following rules:
if the type2 terminal correctly receives the information sent by the type1 terminal on the receiving resource, the type2 terminal sends and reports the information of the type2 terminal and the information of the type1 terminal, which respectively account for half of the resource;
if the type2 terminal cannot correctly receive the information sent by the type1 terminal on the receiving resource, the type2 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 combinations of reducing the modulation order and improving the code redundancy ratio;
step 5.2B, scheduling the reported meter reading data of the non-associated terminal by adopting a scheduling method B, wherein the scheduling method B specifically operates as follows: corresponding transmission data is scheduled for each member in the list single list.
2. The device for improving the data acquisition accuracy of the electric meter according to claim 1, wherein:
in the step 1, the statistical method of the packet error rate is as follows: and in the last K reporting periods, dividing the number of the data error periods by K to obtain the packet error rate.
3. The device for improving the data acquisition accuracy of the electric meter according to claim 1, wherein:
in step 2, the specific method for dividing the terminals in the co-location area into a paging group includes:
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 the type1 terminals in the Set _ F, and the number NumType2 of the type2 terminals in the Set _ F;
step 2.2, calculating cel (F/MaxMember) to obtain the total paging group number GroupNum of the current building, establishing each paging group List (j), and emptying each List information, wherein j is a List number and takes a value of 1, 2, 1.
Step 2.3, judging whether the number of the type1 terminals in the Set _ F is less than or equal to the group Num;
if yes, putting the 1 type terminals into Lists (j), wherein the number of the 1 type terminals in each List (j) is not more than 1, deleting the 1 type terminals from Set _ F, and then jumping to the step 2.5;
if not, selecting group num type1 terminals from the Set _ F, wherein the selection method of the group num type1 terminals comprises the following steps: firstly, dividing the NumType1 class-1 terminals into
The combinations are not repeated, the number of the combinations is f, wherein the range of the f is 0, 1, 2
Then, the distance sum between every two terminals of the group Num terminals in each combination is calculated
step 2.4, calculating the NumType1 minus GroupNum to obtain R, and repeating the following operations of the R round:
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 the List with the shortest distance in the MaxMember and the number of queue members not exceeding the number of queue members;
step 2.5, calculating a barycentric coordinate value Axis (j) of each queue based on the existing elements in the queue, and if no element exists in the queue, setting the barycentric coordinate value to be infinite;
step 2.6, executing NumType2 round 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;
and 2.6.2, calculating the distance between Y and the gravity center of each queue, sequencing each queue from small to large based on the distance, and then putting Y into the front queue which does not exceed the length of the paging packet.
4. The device for improving the data acquisition accuracy of the electric meter according to claim 1, wherein:
in the step 4, the sounding signal resources of the 1-type terminals in the scheduling paging group are distributed in the same TTI, and the resource of each terminal is obtained by dividing the total time-frequency code resource in one TTI by the number of the 1-type terminals in the paging group.
5. The device for improving the accuracy of data collection of electric meters according to claim 4, wherein:
in the step 4, if the paging group has no class 2 terminal, it is not necessary to allocate a mutual inductance resource set to the paging group, and the processing is directly performed according to the conventional access.
6. The device for improving the accuracy of data collection of electric meters according to claim 5, wherein:
in step 5, the specific method for the scheduling module to schedule the class-1 terminal and the class-2 terminal as the accompanying terminal according to the detection result is as follows:
step 5.1A, acquiring a terminal list PL of a paging group, and sorting 1 type of terminals in the terminal list from large to small according to packet error rate to form a list PL1, wherein the number of the terminals in the PL1 is PL1_ num; constructing a list PL2 by 2 types of terminals in the terminal list, wherein the number of the terminals in the PL2 is PL2_ num, and emptying list Single and ListPair list information;
step 5.2A, the following operations are performed in 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, finding out a terminal Q with the best detection quality for the terminal Z in the list PL2 according to the detection result, determining the terminal Q as a companion terminal of the terminal Z, putting { terminal Z, terminal Q } as an element into ListPair, and then deleting Q from PL 2;
and 5.3A, putting the terminals in the list PL2 into ListSingle, and outputting a ListPair list, wherein the ListPair list determines a class 2 terminal as an accompanying terminal for each class 1 terminal.
7. The device for improving the data acquisition accuracy of the electric meter according to 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 device for improving the data acquisition accuracy of the electric meter according to claim 1, wherein:
in step 5.2B, if the members in list single belong to a class 1 terminal, the transmission reliability is improved by reducing the transmission code rate.
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| CN112804118A (en) * | 2020-12-31 | 2021-05-14 | 广州技象科技有限公司 | Data transmission method and device based on data jump transmission link of intelligent electric meter |
| 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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| US8125967B1 (en) * | 2006-11-10 | 2012-02-28 | Sprint Spectrum L.P. | Prioritized EV-DO paging based on type of packet flow |
| 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 |
| CN105719466A (en) * | 2016-04-29 | 2016-06-29 | 邹平县供电公司 | Remote meter reading system based on power distribution system |
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| CN112804118A (en) * | 2020-12-31 | 2021-05-14 | 广州技象科技有限公司 | Data transmission method and device based on data jump transmission link of intelligent electric meter |
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