CN109995563B - Cell positioning method, device, equipment and medium for communication network switching failure - Google Patents

Cell positioning method, device, equipment and medium for communication network switching failure Download PDF

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CN109995563B
CN109995563B CN201711494730.1A CN201711494730A CN109995563B CN 109995563 B CN109995563 B CN 109995563B CN 201711494730 A CN201711494730 A CN 201711494730A CN 109995563 B CN109995563 B CN 109995563B
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communication information
eci
cell
record
sampling points
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CN109995563A (en
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刘铁铮
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China Mobile Communications Group Co Ltd
China Mobile Group Hubei Co Ltd
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China Mobile Communications Group Co Ltd
China Mobile Group Hubei Co Ltd
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L41/00—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
    • H04L41/06—Management of faults, events, alarms or notifications
    • H04L41/0677—Localisation of faults
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W24/00—Supervisory, monitoring or testing arrangements
    • H04W24/10—Scheduling measurement reports ; Arrangements for measurement reports
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/0005—Control or signalling for completing the hand-off
    • H04W36/0083—Determination of parameters used for hand-off, e.g. generation or modification of neighbour cell lists
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/24—Reselection being triggered by specific parameters
    • H04W36/30—Reselection being triggered by specific parameters by measured or perceived connection quality data

Abstract

The embodiment of the invention discloses a method, a device, equipment and a medium for positioning a cell in which communication network switching fails. The cell positioning method comprises the following steps: acquiring a measurement report MR reported by user equipment UE in a preset period; analyzing each MR to obtain a communication information record corresponding to each MR, wherein one communication information record comprises an ECI (evolved universal terrestrial radio access network) cell identifier, an MmeUeS1apId unique network node identifier of a user terminal, a TimeStamp, reference signal received power RSRP and received signal strength RSSI (received signal strength indicator); and positioning the cell with the enhanced single wireless voice call continuity eSRVCC switching failure according to the communication information record. By the embodiment of the invention, the cell with the eSRVCC switching failure can be quickly and accurately positioned.

Description

Cell positioning method, device, equipment and medium for communication network switching failure
Technical Field
The present invention relates to the field of communications, and in particular, to a method, an apparatus, a device, and a medium for cell positioning in which a network switch fails.
Background
With the continuous maturity of Voice over LTE (VoLTE) technology based on IMS and the popularization of operators, the number of VoLTE users and the network scale are continuously expanding. But still, there are no areas of weak Long Term Evolution (LTE) coverage. When the LTE signal cannot satisfy the VoLTE Voice service, the Enhanced Single Radio Voice Call Continuity (eSRVCC) technology is used to switch the UE to the GSM network when the LTE network signal is poor, which is especially important to maintain the Continuity of communication.
However, in some scenarios, the eSRVCC handover is very prone to fail, which causes a drastic degradation of the call quality. Therefore, it is necessary to locate the eSRVCC handover failure cell so as to optimize the network signal in a targeted manner.
Disclosure of Invention
The embodiment of the invention provides a cell positioning method, a device, equipment and a medium for failure of switching of a communication network, which can quickly and accurately position a cell in failure of switching of eSRVCC.
According to an aspect of the embodiments of the present invention, there is provided a cell positioning method for failed handover of a communication network, the method including:
acquiring measurement report sample data MRO reported by a user terminal UE in a preset period;
analyzing the MRO to obtain a communication information record corresponding to each MR in the MRO, wherein one communication information record comprises an ECI (evolved universal terrestrial radio access network) cell identifier, a network node unique identifier MmeUeS1apId of a user terminal, a TimeStamp Timestamp, an LTE service cell reference signal received power MR.LtesScRSRP and a GSM neighbor cell carrier received signal strength indicator MR.GsmNcellCarrierRSSI;
and locating the cell with the enhanced single wireless voice call continuity eSRVCC switching failure according to the communication information record.
According to an aspect of an embodiment of the present invention, the locating, according to the communication information record, a cell in which an eSRVCC handover fails includes:
dividing all the communication information records according to the ECI to obtain all the communication information records corresponding to the same ECI;
determining the number of weak coverage sampling points corresponding to each same MmeUeS1apId in the same ECI, and adding the number of the weak coverage sampling points corresponding to all the same MmeUeS1apId in the same ECI to obtain the number R of the total weak coverage sampling points corresponding to each ECI;
the number of the weak coverage sampling points is the number of record pairs meeting a first condition, the record pairs are two adjacent communication information records with time stamps, and the first condition is that:
recording the time difference between two communication information records of the pair to be equal to a first set value, and recording the record of which the MR.LteScRSRP is smaller than a second set value in the two communication information records of the pair;
determining the number of fast attenuation sampling points corresponding to the same MmeUeS1apId in the same ECI, and adding the number of fast attenuation sampling points corresponding to each MmeUeS1apId in the same ECI to obtain the total number K of fast attenuation sampling points corresponding to each ECI;
the number of the total fast attenuation sampling points is the number of record pairs which simultaneously satisfy the first condition and the second condition, and the second condition is as follows:
in the two communication records of the recording pair, the difference value between the RSSI of the record with the later timestamp and the RSSI of the record with the earlier timestamp is less than a third set value;
and determining the cells with the eSRVCC switching failure according to the R and the K corresponding to each ECI.
According to an aspect of the embodiment of the present invention, the determining, according to the R and the K of each ECI, a cell in which the eSRVCC fails to be switched includes:
if R and K of the ECI meet a third condition, determining that the cell corresponding to the ECI is the cell in which the eSRVCC switching fails, wherein the third condition is as follows:
k is larger than the fourth set value, and the fast attenuation ratio W is larger than the fifth set value, wherein W is the ratio of K to R.
According to an aspect of the embodiment of the present invention, there is a record in which the mr.ltescrsrp is smaller than the second set value in the two communication information records in the record pair, and the mr.ltescrsrp of the communication information record with the earlier timestamp in the two communication information records in the record pair is smaller than the second set value.
According to an aspect of the embodiment of the present invention, the first setting value is an MR reporting period of the UE.
According to an aspect of the embodiment of the present invention, locating a cell in which an eSRVCC handover fails according to the communication information record includes:
counting the number Z of all communication information records corresponding to each ECI;
counting the number S of double weak sampling points corresponding to each ECI, wherein the double weak sampling points are the number of communication information records meeting a fourth condition:
mr.ltescrsrp is less than the sixth set value, and mr.gsmncellcarrierrssi is less than the seventh set value;
and determining the cells of which the eSRVCC switching fails according to the Z and S corresponding to each ECI.
According to an aspect of the embodiment of the present invention, the determining, according to Z and S corresponding to each ECI, a cell in which the eSRVCC fails to be switched includes:
if Z and S corresponding to the ECI meet a fifth condition, determining that the cell corresponding to the ECI is a cell in which eSRVCC switching fails, wherein the fifth condition is as follows:
and S is greater than an eighth set value, the double weak ratio Q is greater than a ninth set value, and Q is the ratio of S to Z.
According to an aspect of the embodiment of the present invention, before locating the cell in which the eSRVCC handover fails according to all the communication information records, the method further includes:
and deleting abnormal communication information records in all the acquired communication information records, wherein the abnormal communication information records comprise a record that the MR.LteScRSRP exceeds a first set range and a record that the MR.GsmNcellCarrierRSSI exceeds a second set range.
According to an aspect of the embodiment of the present invention, before locating the cell in which the eSRVCC handover fails according to all the communication information records, the method further includes:
and deleting the communication information record of which the MR.GsmNcellCarrier RSSI is all empty in all the acquired communication information records.
According to another aspect of the embodiments of the present invention, there is provided a cell positioning apparatus for a handover failure of a communication network, the apparatus including:
the measurement report acquisition module is used for acquiring measurement report sample data MRO reported by the user terminal UE in a preset period;
the communication information record acquisition module is used for analyzing the MRO to obtain a communication information record corresponding to each MR in the MRO, wherein one communication information record comprises an ECI (evolved universal terrestrial radio access network) cell identifier, a unique network node identifier MmeUeS1apId of a user terminal, a TimeStamp Timestamp, a reference signal received power MR.LtesScRSRP of an LTE service cell and a received signal strength indicator MR.GsmNcellCarrier RSSI of a GSM neighbor cell;
and the switching failure cell positioning module is used for positioning the enhanced single wireless voice call continuity eSRVCC switching failure cell according to the communication information record.
According to yet another aspect of the present invention, there is provided a cell positioning apparatus, the apparatus comprising a memory and a processor;
the memory has stored therein a computer program;
the processor is adapted to execute the computer program to perform the positioning method as described in any of the embodiments of the invention.
According to yet another aspect of the present invention, there is provided a computer readable storage medium having stored therein computer program instructions which, when executed on a processor, implement a positioning method as described in any of the embodiments of the present invention.
The cell positioning method, device, equipment and medium for the message network switching failure in the embodiment of the invention fully play the advantages of MRO big data and overcome the limitation of analyzing eSRVCC switching failure cells through drive test data in the prior art. By means of the MR.LteScRSRP representing the signal strength of the LTE network and the MR.GsmNcellCarrier RSSI representing the signal strength of the GSM network in the MRO data, cells which may have eSRVCC switching failure can be quickly and accurately positioned, and powerful basis is provided for developing targeted optimization.
Drawings
Other features, objects and advantages of the invention will become apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings in which like or similar reference characters refer to the same or similar parts.
Fig. 1 is a flowchart illustrating a method for cell positioning in handover failure of a communication network according to an embodiment of the present invention;
FIG. 2 is a diagram illustrating the resolution of an MRO in an example of the present invention;
FIG. 3 is a diagram illustrating the resolution of an MRO in an example of the present invention;
fig. 4 is a schematic structural diagram illustrating a cell positioning apparatus for handover failure of a communication network according to an embodiment of the present invention;
fig. 5 illustrates a block diagram of an exemplary hardware architecture of a computing device that may implement the cell location and apparatus for a communication network handover failure in accordance with an embodiment of the present invention.
Detailed Description
Features and exemplary embodiments of various aspects of the present invention will be described in detail below. In the following detailed description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. It will be apparent, however, to one skilled in the art that the present invention may be practiced without some of these specific details. The following description of the embodiments is merely intended to provide a better understanding of the present invention by illustrating examples of the present invention. The present invention is in no way limited to any specific configuration and algorithm set forth below, but rather covers any modification, replacement or improvement of elements, components or algorithms without departing from the spirit of the invention. In the drawings and the following description, well-known structures and techniques are not shown in order to avoid unnecessarily obscuring the present invention.
Fig. 1 is a flowchart illustrating a method for locating a cell in which handover of a communication network fails according to an embodiment of the present invention. As shown in fig. 1, the cell positioning method mainly includes the following steps:
step S11: and acquiring MRO (measurement report sample data) of the measurement report reported by the UE in a preset period.
Step S12: and analyzing the MROs to obtain a communication information record corresponding to each MR in the MROs.
In the embodiment of the invention, a communication information record corresponding to each MR in the obtained MRO can be obtained by analyzing the MRO, and an evolved universal terrestrial radio access network cell identifier ECI, a network node unique identifier MmeUeS1apId of a user terminal, a TimeStamp Timestamp, reference signal received power MR.LtesScRSRP of an LTE service cell and a GSM neighbor cell carrier received signal strength indicator MR.GsmNcellCarrier RSSI are in each communication information record.
The ECI is an evolved universal terrestrial radio access network cell identifier, the identifier can uniquely identify one cell, the ECI usually consists of a base station identifier ENBID and a cell identification code CellID, and the value is usually ENBID multiplied by 256+ CellID.
The MmeUeS1apId is allocated by the system, and is used for the MME to uniquely identify one UE in the S1 interface, that is, the MmeUeS1apId is used to identify a primary service of one UE. Therefore, based on the MmeUeS1apId, the communication information records corresponding to all MRs reported by one UE in the obtained MRO in one communication service can be determined.
Ltescrsrp this field indicates the signal strength of the current serving cell received by the UE. In practical applications, the mr.ltescrsrp carried in the MR reported by the UE is not the actual signal strength value of the signal strength, but the actual signal strength value plus 140 dBm.
The field of mr.gsmncellcarrierrssi represents the indication of the received signal strength of GSM neighbor carriers with and without a defined neighbor relation, and similarly, in practical application, the mr.gsmncellcarrierrssi carried in the MR reported by the UE is not an actual signal strength value, which is the actual signal strength plus 110 dB.
In the current network, when the UE is in a traffic state, i.e. in a communication state, the UE periodically transmits an MR to the base station according to a set period (the current network is generally set to 5120ms), and reports the relevant information measured by the terminal. Therefore, the MRO of the set period can be obtained by obtaining the MR reported by the UE in the set period. It can be understood that the duration of the preset period can be set according to actual application needs, for example, the period can be set to 1 day, and the longer the period is, the more MR data is acquired, and the more accurate the location of the cell in which the eSRVCC handover based on the MR data fails is.
And researching MRO (measurement report sample data), and analyzing the MRO to obtain information such as ECI, MmeUeS1apId, TimeStamp, RSRP, RSSI and the like at the same time. Fig. 2 and fig. 3 show a diagram of an analysis result of an MRO in a specific example, and as can be seen from fig. 3, an MR reporting period in this example, that is, an actual interval of one MR report by a UE, is 5120ms, in the diagram, "id" is ECI, "a line corresponding to" object mmelcode "corresponds to one analyzed communication information record, and expanded data below" object mmelcode "corresponds to specific detailed information of the record corresponding to" object mmelcode ". As can be seen from the figure, by analyzing the MR0, MmeUeS1apId, TimeStamp, ECI, mr.ltescrsrp, and mr.gsmncellcarrierrssi corresponding to each MR can be obtained. The same MmeUeS1apId corresponds to the same UE.
As can be seen from fig. 2 and fig. 3, there are generally a plurality of RSRPs and RSSIs in each communication information record, and one of the mr.ltescrsrp and the mr.gsmncellcarrier RSSI can be selected as the mr.ltescrsrp and the mr.gsmncellcarrier RSSI of the communication information record according to a preconfigured selection rule. For example, any value of a plurality of mr.ltescrsrp values of a communication information record may be used as the value of the mr.ltescrsrp of the record, and the plurality of mr.gsmncellcarrierrssi in a communication information record may be used as the value of the mr.gsmncellcarrierrssi of the record.
As can be seen from the foregoing description, since the mr.ltescrsrp can be used to represent the LTE network signal strength, and the mr.gsmncellcarrierrssi can be used to represent the GSM network signal strength, the LTE network coverage condition and the GSM network coverage condition in the LTE cell can be evaluated by acquiring the MR of all calls occurring to all UEs within a longer period of time, that is, within the preset period, and by analyzing the communication information record obtained by the MR.
Step S13: and positioning the cells with the eSRVCC switching failure according to all the communication information records.
In the embodiment of the invention, the cell in which the eSRVCC switching fails is a fast fading cell or a double weak cell, wherein the fast fading cell refers to a cell in which an LTE signal can be subjected to fast fading, and generally occurs in application scenarios such as parking lots, tunnels and the like. The dual weak cells refer to cells with weak LTE network signals and GSM network signals.
In order to improve the accuracy of positioning the cell in which the eSRVCC handover fails, in the embodiment of the present invention, before positioning the cell in which the eSRVCC handover fails according to all the communication information records, the method further includes: and deleting the acquired abnormal communication information records, wherein the abnormal communication information records comprise a record that the MR.LteScRSRP exceeds a first set range and a record that the MR.GsmNcellCarrierRSSI exceeds a second set range.
It is understood that the first setting range and the second setting range can be adjusted according to actual needs. In an alternative embodiment of the present invention, the first setting range may be 0 to 97dBm, and the second setting range may be 0 to 63 dB. At this time, if the mr.ltescrsrp of one communication information record is not between 0 and 97dBm, the communication information record is determined as an abnormal record and can be rejected. If the mr.gsmncellcarrierrssi of a communication record is not in the range of 0 to 63dB, it is determined that the communication record is an abnormal record and the record needs to be discarded.
In an optional embodiment of the present invention, locating a cell in which an eSRVCC handover fails according to a communication information record includes:
dividing all communication information records according to the ECI to obtain all communication information records corresponding to the same ECI;
determining the number of weak coverage sampling points corresponding to each same MmeUeS1apId in the same ECI, and adding the number of the weak coverage sampling points corresponding to all the same MmeUeS1apId in the same ECI to obtain the number R of the total weak coverage sampling points corresponding to each ECI;
wherein, the number of weak coverage sampling point is the quantity of the record pair that satisfies first condition, and the record pair is two adjacent communication information records of timestamp, and first condition is:
recording the time difference between two communication information records of the pair to be equal to a first set value, and recording the record of which the MR.LteScRSRP is smaller than a second set value in the two communication information records of the pair;
determining the number of fast attenuation sampling points corresponding to the same MmeUeS1apId in the same ECI, and adding the number of fast attenuation sampling points corresponding to each MmeUeS1apId in the same ECI to obtain the total number K of fast attenuation sampling points corresponding to each ECI;
the number of the total fast attenuation sampling points is the number of record pairs meeting a first condition and a second condition at the same time, and the second condition is as follows:
in the two communication records of the recording pair, the difference value between the RSSI of the record with the later timestamp and the RSSI of the record with the earlier timestamp is less than a third set value;
and determining the cells with the eSRVCC switching failure according to the R and the K corresponding to each ECI.
It is understood that the first set value, the second set value and the third set value can be set according to actual needs. In an optional embodiment of the present invention, the first set value may be 5020ms, the second set value may be 25dBm (equivalent to-115 dBm), and the third set value may be-12 dB.
In the embodiment of the present invention, determining a cell in which the eSRVCC fails to be switched according to R and K of each ECI includes: if R and K of the ECI meet a third condition, determining that the cell corresponding to the ECI is the cell in which the eSRCCC fails to be switched, wherein the third condition is as follows:
k is larger than the fourth set value, and the fast attenuation ratio W is larger than the fifth set value, and W is the ratio of K to R.
Similarly, the fourth setting value and the fifth setting value in the third condition may be set according to actual needs. Table 1 shows a list of threshold values for locating fast fading cells in a specific example of the present invention, where the number of fast fading corresponds to a fast fading sampling point. As can be seen from table 1, in this example, the fourth setting value in the third condition may be 50, and the fifth setting value may be 6%.
TABLE 1
Figure BDA0001536188020000091
According to the third condition, the determined cell in which the eSRVCC fails to be switched can be called a fast fading cell, and the cell in which the LTE signal is fast fading is identified. In practical application, when whether a cell corresponding to the ECI is a fast fading cell is located, the communication information record corresponding to the high-speed rail cell in the obtained communication information record can be excluded according to the network configuration information.
In the embodiment of the present invention, a record whose RSRP is smaller than the second set value exists in two communication information records in the record pair, and preferably, the RSRP of the communication information record with the earlier timestamp in the two communication information records in the record pair is smaller than the second set value.
The embodiment of the invention realizes the evaluation of the whole network cell level fast fading condition based on the MR data. Since the cell in which the eSRVCC handover fails is located at last, after one communication information record corresponding to each MR in each MRO is obtained by analyzing the MROs, all the communication information records may be divided according to the ECI to obtain all the communication information records corresponding to the same ECI, all the communication information records of the same ECI may be stored in one data table, and based on all the communication information records corresponding to each ECI, it is determined whether the cell corresponding to the ECI is the cell in which the eSRVCC handover fails.
As shown in table 2, the RSSI of the communication record in table 2 is shown for the cell with an ECI of 4355451), and each row corresponds to a communication record. As the communication information record corresponding to the 2 nd line, the record is a piece of communication information record with an EC identifier of 4355451, an MmeUeS1apId of 19776, a TimeStamp of 2016, 5, 18, 16 minutes of 59.520 seconds, and an mr.ltescrsrp of 26dBm (relative value, actual value of 26dBm-140 dBm).
TABLE 2
Figure BDA0001536188020000101
In practical application, for efficiency of data processing, for all communication information records in the same table (corresponding to the same ECI), the records may be sorted according to the MmeUeS1apId, and for the records corresponding to the same MmeUeS1apId in the same ECI after sorting, ascending sorting may be performed based on time sequence, so as to obtain a result that the communication information records of the same MmeUeS1apId in the same cell are arranged in time sequence, where the communication information record table shown in table 2 is the sorted result. For the UE with MmeUeS1apId of 19776, there are 5 communication information records in total, and the time sequence is shown in column C.
For the communication information recording table shown in table 2, the first set value is 5120ms, the second set value is 25dBm, and the third set value is-12 dB. That is, in the communication records corresponding to the same MmeUeS1apId, in two communication records with adjacent timestamps (that is, after the communication information records are sorted according to the timestamp, the timestamps corresponding to the two adjacent records are adjacent to each other), the mr. ltescrsrp of the record with the earlier timestamp is recorded as RSNThe time stamp of the earlier record of the time stamp is marked as TNLtescrsrp of later time-stamped records is recorded as RSN-1The later recording time stamp is denoted as TN-1. The steps for determining R and K for an ECI may be as follows:
firstly, the number of weak coverage sampling points and the number of fast attenuation sampling points corresponding to each MR. The determining the number of weak coverage sampling points and the number of fast attenuation sampling points corresponding to one mr.ltescrsrp may include:
the two adjacent rows in column B (field: MmeUeS1apId) have equal values, i.e. the communication information record of the same UE is represented, and at this time, if RS existsN<25dBm and TN-TN-1Less than or equal to 5120ms, adding 1 to the number of the weak coverage sampling points of the MmeUeS1apId when the RS is satisfiedN<25dBm and TN-TN-1When R is less than or equal to 5120ms, if R isN-RN-1When the signal strength of the sampling point at the time point is 12dB weaker than the signal strength of the last sampling point spaced by 5120ms (an empirical value of signal fast fading), if a fast fading event occurs at the time point, the number of fast fading sampling points corresponding to the mr.ltescrsrp is increased by 1.
After the number of the weak coverage sampling points and the number of the fast attenuation sampling points corresponding to each mr.ltescrsrp of the same ECI are calculated, the numbers of the weak coverage sampling points corresponding to all mr.ltescrsrps may be added to obtain R corresponding to the ECI, the numbers of the fast attenuation sampling points corresponding to all mr.ltescrsrps may be added to obtain K corresponding to the ECI, K and R corresponding to the ECI are calculated, and based on K and R, W corresponding to the ECI may be calculated to obtain K/R, at this time, whether the cell corresponding to the ECI is a fast attenuation cell may be determined according to K, R and W calculated and the third condition. By the method, the cells corresponding to which ECIs in the ECIs related to the acquired MROs in the preset period can be judged to be the fast fading cells.
Specifically, for the communication information records in the ECI communication information record table of 4355451 shown in table 2, the initial values of R and K are both 0 for the same ECI, for the communication information records shown in table 1, 4355451 of the 3 rd row of a column is 4355451 of the 2 nd row, the 3 rd row of C column is 5120ms different from the 2 nd row of C column, 19776 of the 3 rd row of B column is 19776 of the 2 nd row and the 3 rd row value of D column is <25dBm, then the R value of this ECI is +1, at this time R is 1, and at this time the difference between the 3 rd row value of D column 12dBm and the 2 nd row value of D column 26dBm is-14 dBm, which is less than-12 dBm, so the K value is +1, at this time K is 1.
In the embodiment of the present invention, locating the cell in which the eSRVCC fails to be switched according to the communication information record includes:
counting the number Z of all communication information records corresponding to each ECI;
counting the number S of double weak sampling points corresponding to each ECI, wherein the double weak sampling points are the number of communication information records meeting a fourth condition:
the RSRP is smaller than a sixth set value, and the RSSI is smaller than a seventh set value;
and determining the cells of which the eSRVCC switching fails according to the Z and S corresponding to each ECI.
In the embodiment of the present invention, determining a cell in which the eSRVCC fails to be switched according to Z and S corresponding to each ECI includes:
if S and Q corresponding to the ECI satisfy a fifth condition, determining that the cell corresponding to the ECI is a cell in which the eSRVCC fails to be switched, where the fifth condition is:
s is larger than the eighth set value, the double weak ratio Q is larger than the ninth set value, and Q is the ratio of S to Z.
According to the fifth condition, the determined cell in which the eSRVCC handover fails may be referred to as a dual weak cell, which indicates a cell in which both LTE signals and GSM signals are weak.
It can be understood that the sixth setting value, the seventh setting value, the eighth setting value, and the ninth setting value may also be adjusted according to the actual situation of the existing network, and the severity of the eSRVCC failure scenario may be determined by adjusting different setting values. In one embodiment of the present invention, the sixth setting value may be 25dBm, and the seventh setting value may be 15 dBm.
Table 1 shows a threshold list for locating a dual weak cell in a specific example of the present invention, where the dual weak times in the graph correspond to dual weak sampling points. As can be seen from table 3, the eighth set value in the fifth condition may be 500, and the ninth set value may be 10%.
TABLE 3
Fifth Condition Number of times limit Proportional limiting
Double weak decision Number of weak or weak>500 Ratio of weak to weak>10％
The method of the embodiment of the invention can quickly and accurately determine the cell in which the eSRCC switching fails (the cell in which the eSRCC switching fails with high probability), and can further identify whether the cell in which the eSRCC switching fails is a double weak cell or a fast fading cell. The scheme of the embodiment of the invention can comprehensively evaluate the double weak and fast fading degrees of each cell of the whole network based on MRO big data information, overcomes the one-sidedness and the limitation of the traditional drive test data analysis, provides a powerful basis for developing targeted network optimization, and has a clear positioning result for optimization personnel, thereby better meeting the actual application requirements.
In practical application, according to actual needs, a targeted handover threshold may be optimized, for example, in an LTE fast fading scenario cell, a start test and a handover threshold may be increased), so that the eSRVCC may occur to the GSM cell as early as possible, and failure of eSRVCC handover due to entering a fast fading scenario is avoided. It can be understood that the specific values of the setting values in the embodiment of the present invention can be set and adjusted according to empirical values, so as to limit the severity of determining the eSRVCC failure scene positioning.
Corresponding to the method shown in fig. 1, fig. 4 shows a schematic structural diagram of a cell positioning apparatus 100 with failed handover in a communication network according to an embodiment of the present invention. As shown in fig. 4, the positioning apparatus 100 may include a measurement report acquisition module 110, a communication information record acquisition module 120, and a handover failure cell positioning module 130.
A measurement report acquisition module 110, configured to acquire measurement report sample data MRO reported by a user equipment UE in a preset period;
a communication information record obtaining module 120, configured to analyze the MRO to obtain a communication information record corresponding to each MR in the MRO, where one communication information record includes an evolved universal terrestrial radio access network cell identifier ECI, a network node unique identifier MmeUeS1apId of a user terminal, a TimeStamp, an LTE serving cell reference signal received power mr.ltescsrrp, and a GSM neighbor cell carrier received signal strength indicator mr.gsmnicellcarrierrssi;
a handover failure cell locating module 130, configured to locate, according to the communication information record, a cell in which the enhanced single wireless voice call continuity eSRVCC handover fails.
In an optional embodiment of the present invention, the handover failure cell positioning module 130 is specifically configured to:
dividing all communication information records according to the ECI to obtain all communication information records corresponding to the same ECI;
determining the number of weak coverage sampling points corresponding to each same MmeUeS1apId in the same ECI, and adding the number of the weak coverage sampling points corresponding to all the same MmeUeS1apId in the same ECI to obtain the number R of the total weak coverage sampling points corresponding to each ECI;
wherein, the number of weak coverage sampling point is the quantity of the record pair that satisfies first condition, and the record pair is two adjacent communication information records of timestamp, and first condition is:
recording the time difference between two communication information records of the pair to be equal to a first set value, and recording the record of which the MR.LteScRSRP is smaller than a second set value in the two communication information records of the pair;
determining the number of fast attenuation sampling points corresponding to the same MmeUeS1apId in the same ECI, and adding the number of fast attenuation sampling points corresponding to each MmeUeS1apId in the same ECI to obtain the total number K of fast attenuation sampling points corresponding to each ECI;
the number of the total fast attenuation sampling points is the number of record pairs meeting a first condition and a second condition at the same time, and the second condition is as follows:
in the two communication records of the recording pair, the difference value between the RSSI of the record with the later timestamp and the RSSI of the record with the earlier timestamp is less than a third set value;
and determining the cells with the eSRVCC switching failure according to the R and the K corresponding to each ECI.
In an optional embodiment of the present invention, the handover failure cell positioning module 130 determines, according to R and K of each ECI, that the cell in which the eSRVCC handover fails is specifically configured to:
if R and K of the ECI meet a third condition, determining that the cell corresponding to the ECI is the cell in which the eSRCCC fails to be switched, wherein the third condition is as follows:
k is larger than the fourth set value, and the fast attenuation ratio W is larger than the fifth set value, and W is the ratio of K to R.
In an optional embodiment of the present invention, a record in which the mr.ltescrsrp is smaller than the second set value exists in the two communication information records in the record pair, and the mr.ltescrsrp of the communication information record with the earlier timestamp in the two communication information records in the record pair is smaller than the second set value.
In an optional embodiment of the present invention, the first setting value is an MR reporting period of the UE.
In an optional embodiment of the present invention, the handover failure cell positioning module 130 is further configured to:
counting the number Z of all communication information records corresponding to each ECI;
counting the number S of double weak sampling points corresponding to each ECI, wherein the double weak sampling points are the number of communication information records meeting a fourth condition:
mr.ltescrsrp is less than the sixth set value, and mr.gsmncellcarrierrssi is less than the seventh set value;
and determining the cells of which the eSRVCC switching fails according to the Z and S corresponding to each ECI.
In an optional embodiment of the present invention, when determining, according to Z and S corresponding to each ECI, a cell location module 130 that fails to perform handover of the eSRVCC, the cell location module is specifically configured to:
if Z and S corresponding to the ECI meet a fifth condition, determining that the cell corresponding to the ECI is a cell in which eSRVCC switching fails, wherein the fifth condition is as follows:
s is larger than the eighth set value, the double weak ratio Q is larger than the ninth set value, and Q is the ratio of S to Z.
In an optional embodiment of the present invention, the positioning apparatus may further include a first exception record deleting module.
And the first abnormal record deleting module is used for deleting abnormal communication information records in all the acquired communication information records before the cells of eSRVCC switching failure are located according to all the communication information records, wherein the abnormal communication information records comprise records of which the MR.LteScRSRP exceeds a first set range and records of which the MR.GsmNcell Carrier RSSI exceeds a second set range.
The abnormal record deleting module, before locating the cell in which the eSRVCC fails to be switched according to all the communication information records, further includes:
in an optional embodiment of the present invention, the positioning apparatus may further include a second abnormal record deleting module.
And the second abnormal record deleting module is used for deleting the communication information record of which the MR.GsmNcellCarrier RSSI is all empty in all the acquired communication information records.
At least a portion of the communication network handover failure cell location methods and apparatus described in connection with fig. 1-4 may be implemented by the computing device 200. Fig. 5 shows a schematic structural block diagram of a cell positioning device in which handover of a communication network fails according to an embodiment of the present invention. As shown in fig. 5, computing device 200 may include an input device 201, an input interface 202, a processor 203, a memory 204, an output interface 205, and an output device 206. The input interface 202, the processor 203, the memory 204, and the output interface 205 are connected to each other via a bus 210, and the input device 201 and the output device 206 are connected to the bus 210 via the input interface 202 and the output interface 205, respectively, and further connected to other components of the computing device 200. Specifically, the input device 201 receives input information from the outside and transmits the input information to the processor 203 through the input interface 202; processor 203 processes input information based on computer-executable instructions stored in memory 204 to generate output information, stores the output information temporarily or permanently in memory 204, and then transmits the output information to output device 206 via output interface 805; output device 206 outputs the output information outside of computing device 200 for use by the user.
That is, the computing device 200 shown in fig. 5 may be implemented as a cell location device that includes the processor 203 and the memory 204. The memory 204 is used for storing executable program codes; the processor 203 is configured to read the executable program code stored in the memory to execute the cell positioning method according to the above-mentioned embodiment of the present invention.
The embodiment of the present invention further provides a computer-readable storage medium, where computer program instructions are stored in the computer-readable storage medium, and when the computer program instructions are executed on a processor, the positioning method in any embodiment of the present invention is implemented.
The functional blocks shown in the above-described structural block diagrams may be implemented as hardware, software, firmware, or a combination thereof. When implemented in hardware, it may be, for example, an electronic circuit, an Application Specific Integrated Circuit (ASIC), suitable firmware, plug-in, function card, or the like. When implemented in software, the elements of the invention are the programs or code segments used to perform the required tasks. The program or code segments may be stored in a machine-readable medium or transmitted by a data signal carried in a carrier wave over a transmission medium or a communication link. A "machine-readable medium" may include any medium that can store or transfer information. Examples of a machine-readable medium include electronic circuits, semiconductor memory devices, ROM, flash memory, Erasable ROM (EROM), floppy disks, CD-ROMs, optical disks, hard disks, fiber optic media, Radio Frequency (RF) links, and so forth. The code segments may be downloaded via computer networks such as the internet, intranet, etc.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
It should also be noted that the exemplary embodiments mentioned in this patent describe some methods or systems based on a series of steps or devices. However, the present invention is not limited to the order of the above-described steps, that is, the steps may be performed in the order mentioned in the embodiments, or may be performed in an order different from the order in the embodiments or simultaneously with several steps.
The present invention may be embodied in other specific forms without departing from its spirit or essential characteristics. For example, the algorithms described in the specific embodiments may be modified without departing from the basic spirit of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.

Claims (10)

1. A method for locating a cell in which handover of a communication network fails, the method comprising:
acquiring measurement report sample data MRO reported by a user terminal UE in a preset period;
analyzing the MRO to obtain a communication information record corresponding to each MR in the MRO, wherein one communication information record comprises an ECI (evolved universal terrestrial radio access network) cell identifier, a network node unique identifier MmeUeS1apId of a user terminal, a TimeStamp Timestamp, an LTE service cell reference signal received power MR.LtesScRSRP and a GSM neighbor cell carrier received signal strength indicator MR.GsmNcellCarrierRSSI;
positioning a cell with enhanced single wireless voice call continuity eSRVCC switching failure according to the communication information record;
the locating the cell with the eSRVCC switching failure according to the communication information record comprises the following steps:
dividing all the communication information records according to the ECI to obtain all the communication information records corresponding to the same ECI;
determining the number of weak coverage sampling points corresponding to each same MmeUeS1apId in the same ECI, and adding the number of the weak coverage sampling points corresponding to all the same MmeUeS1apId in the same ECI to obtain the number R of the total weak coverage sampling points corresponding to each ECI;
the number of the weak coverage sampling points is the number of record pairs meeting a first condition, the record pairs are two adjacent communication information records with time stamps, and the first condition is that:
recording the time difference between two communication information records of the pair to be equal to a first set value, and recording the record of which the MR.LteScRSRP is smaller than a second set value in the two communication information records of the pair;
determining the number of fast attenuation sampling points corresponding to the same MmeUeS1apId in the same ECI, and adding the number of fast attenuation sampling points corresponding to each MmeUeS1apId in the same ECI to obtain the total number K of fast attenuation sampling points corresponding to each ECI;
the number of the total fast attenuation sampling points is the number of record pairs which simultaneously satisfy the first condition and the second condition, and the second condition is as follows:
in the two communication records of the recording pair, the difference value between the RSSI of the record with the later timestamp and the RSSI of the record with the earlier timestamp is less than a third set value;
determining a cell in which eSRVCC switching fails according to R and K corresponding to each ECI;
or, the locating the cell with the eSRVCC handover failure according to the communication information record includes:
counting the number Z of all communication information records corresponding to each ECI;
counting the number S of double weak sampling points corresponding to each ECI, wherein the double weak sampling points are the number of communication information records meeting a fourth condition:
mr.ltescrsrp is less than the sixth set value, and mr.gsmncellcarrierrssi is less than the seventh set value;
and determining the cells of which the eSRVCC switching fails according to the Z and S corresponding to each ECI.
2. The method according to claim 1, wherein the determining the cell with the eSRVCC handover failure according to the R and K of each ECI comprises:
if R and K of the ECI meet a third condition, determining that the cell corresponding to the ECI is the cell in which the eSRVCC switching fails, wherein the third condition is as follows:
k is larger than the fourth set value, and the fast attenuation ratio W is larger than the fifth set value, wherein W is the ratio of K to R.
3. The positioning method according to claim 1, wherein a record with the mr.ltecscrsrp smaller than a second set value exists in the two communication information records in the record pair, and the mr.ltecscrsrp of the communication information record with the earlier timestamp in the two communication information records in the record pair is smaller than the second set value.
4. The method according to claim 1, wherein the first setting value is an MR reporting period of the UE.
5. The method according to claim 1, wherein the determining the cell in which the eSRVCC fails to be switched according to the Z and S corresponding to each ECI comprises:
if Z and S corresponding to the ECI meet a fifth condition, determining that the cell corresponding to the ECI is a cell in which eSRVCC switching fails, wherein the fifth condition is as follows:
and S is greater than an eighth set value, the double weak ratio Q is greater than a ninth set value, and Q is the ratio of S to Z.
6. The method of claim 1, wherein before locating the cell with the eSRVCC handover failure according to all the communication information records, further comprising:
and deleting abnormal communication information records in all the acquired communication information records, wherein the abnormal communication information records comprise a record that the MR.LteScRSRP exceeds a first set range and a record that the MR.GsmNcellCarrierRSSI exceeds a second set range.
7. The method of claim 1, wherein before locating the cell with the eSRVCC handover failure according to all the communication information records, further comprising:
and deleting the communication information record of which the MR.GsmNcellCarrier RSSI is all empty in all the acquired communication information records.
8. An apparatus for cell location in a handover failure of a communication network, the apparatus comprising:
the measurement report acquisition module is used for acquiring measurement report sample data MRO reported by the user terminal UE in a preset period;
the communication information record acquisition module is used for analyzing the MRO to obtain a communication information record corresponding to each MR in the MRO, wherein one communication information record comprises an ECI (evolved universal terrestrial radio access network) cell identifier, a unique network node identifier MmeUeS1apId of a user terminal, a TimeStamp Timestamp, a reference signal received power MR.LtesScRSRP of an LTE service cell and a received signal strength indicator MR.GsmNcellCarrier RSSI of a GSM neighbor cell;
the switching failure cell positioning module is used for positioning the enhanced single wireless voice call continuity eSRVCC switching failure cell according to the communication information record;
the locating the cell with the eSRVCC switching failure according to the communication information record comprises the following steps:
dividing all the communication information records according to the ECI to obtain all the communication information records corresponding to the same ECI;
determining the number of weak coverage sampling points corresponding to each same MmeUeS1apId in the same ECI, and adding the number of the weak coverage sampling points corresponding to all the same MmeUeS1apId in the same ECI to obtain the number R of the total weak coverage sampling points corresponding to each ECI;
the number of the weak coverage sampling points is the number of record pairs meeting a first condition, the record pairs are two adjacent communication information records with time stamps, and the first condition is that:
recording the time difference between two communication information records of the pair to be equal to a first set value, and recording the record of which the MR.LteScRSRP is smaller than a second set value in the two communication information records of the pair;
determining the number of fast attenuation sampling points corresponding to the same MmeUeS1apId in the same ECI, and adding the number of fast attenuation sampling points corresponding to each MmeUeS1apId in the same ECI to obtain the total number K of fast attenuation sampling points corresponding to each ECI;
the number of the total fast attenuation sampling points is the number of record pairs which simultaneously satisfy the first condition and the second condition, and the second condition is as follows:
in the two communication records of the recording pair, the difference value between the RSSI of the record with the later timestamp and the RSSI of the record with the earlier timestamp is less than a third set value;
determining a cell in which eSRVCC switching fails according to R and K corresponding to each ECI;
or, the locating the cell with the eSRVCC handover failure according to the communication information record includes:
counting the number Z of all communication information records corresponding to each ECI;
counting the number S of double weak sampling points corresponding to each ECI, wherein the double weak sampling points are the number of communication information records meeting a fourth condition:
mr.ltescrsrp is less than the sixth set value, and mr.gsmncellcarrierrssi is less than the seventh set value;
and determining the cells of which the eSRVCC switching fails according to the Z and S corresponding to each ECI.
9. A cell positioning apparatus, characterized in that the apparatus comprises a memory and a processor;
the memory has stored therein a computer program;
the processor is configured to execute the computer program to perform the positioning method according to any of claims 1 to 7.
10. A computer-readable storage medium, in which computer program instructions are stored which, when executed on a processor, implement the positioning method according to any one of claims 1 to 7.
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