CN109982352B - Pilot frequency switching method and device in TDD-LTE network - Google Patents

Pilot frequency switching method and device in TDD-LTE network Download PDF

Info

Publication number
CN109982352B
CN109982352B CN201711462211.7A CN201711462211A CN109982352B CN 109982352 B CN109982352 B CN 109982352B CN 201711462211 A CN201711462211 A CN 201711462211A CN 109982352 B CN109982352 B CN 109982352B
Authority
CN
China
Prior art keywords
event
cell
frequency switching
pilot frequency
level
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
CN201711462211.7A
Other languages
Chinese (zh)
Other versions
CN109982352A (en
Inventor
周猛
赵明峰
吴玉东
向兵
曾志斌
吕黎
汪洋
梁金山
黄建辉
庞伟东
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
China Mobile Communications Group Co Ltd
China Mobile Group Design Institute Co Ltd
Original Assignee
China Mobile Communications Group Co Ltd
China Mobile Group Design Institute Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by China Mobile Communications Group Co Ltd, China Mobile Group Design Institute Co Ltd filed Critical China Mobile Communications Group Co Ltd
Priority to CN201711462211.7A priority Critical patent/CN109982352B/en
Publication of CN109982352A publication Critical patent/CN109982352A/en
Application granted granted Critical
Publication of CN109982352B publication Critical patent/CN109982352B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W24/00—Supervisory, monitoring or testing arrangements
    • H04W24/02—Arrangements for optimising operational condition
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W24/00—Supervisory, monitoring or testing arrangements
    • H04W24/08—Testing, supervising or monitoring using real traffic
    • 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

Abstract

The embodiment of the invention provides a pilot frequency switching method and a pilot frequency switching device in a TDD-LTE network, wherein the pilot frequency switching method comprises the steps of obtaining MRO measurement data; acquiring all effective sampling points in a switching zone according to MRO measurement data, respectively acquiring a first level value of a target service cell in the switching zone and a second level value of an adjacent zone, and acquiring level fluctuation data of the adjacent zone in the switching zone; and determining a pilot frequency switching threshold optimization scheme of the target serving cell based on the first level value, the second level value, a preset pilot frequency switching strategy and a parameter threshold value, determining a pilot frequency switching time lag optimization scheme of the target serving cell according to level fluctuation data of an adjacent cell in a switching band, and performing pilot frequency switching on the target serving cell. The method and the device can accurately and efficiently make differentiation formulation on the pilot frequency switching threshold and the pilot frequency switching time lag of each service cell, and can realize fine optimization of the whole network cell.

Description

Pilot frequency switching method and device in TDD-LTE network
Technical Field
The embodiment of the invention relates to the technical field of network optimization, in particular to a pilot frequency switching method and device in a TDD-LTE network.
Background
The 4G is a fourth-generation mobile phone mobile communication standard, which refers to a fourth-generation mobile communication technology, including two systems of TD-LTE and FDD-LTE, and LTE, Long Term Evolution, is an abbreviation of english Long Term Evolution. LTE is technically considered to be 3.9G. However, they are also generally referred to as 4G, because they have a data download capability of 100Mbps, and are also a key process for 3G evolution to technology 4G, the LTE standard is composed of two different duplex modes, i.e. TDD and FDD, where TDD represents time division duplex, that is, uplink and downlink are performed alternately according to time allocation on the same frequency band, and TDD is on the same frequency band, so that it can better utilize spectrum resources and is easier to arrange.
At present, the different frequency switching schemes for the TDD-LTE network mainly include the following:
scheme 1: according to the established pilot frequency switching strategy, carrying out uniform pilot frequency parameter configuration on the whole network cell, generally being used for newly-opened network access optimization configuration, and mostly belonging to the service function realization class;
scheme 2: parameter configuration is carried out according to the switching indexes of the cells and the past optimization experience, optimization processing is mainly carried out on the cells with the problem of poor pilot frequency switching, and the method generally needs to try for many times to obtain a better parameter configuration result;
scheme 3: the pilot frequency switching parameter optimization is carried out according to field test, the parameter optimization mainly depends on field test results, the switching zone position, the level conditions of a service cell and a neighboring zone are judged, and parameter configuration is carried out.
Scheme 4: acquiring distance parameters of each adjacent cell adjacent to a target cell, a NAVSS algorithm weighted value of the adjacent cell, position relation parameters of the target cell and each adjacent cell, NCS report data of each adjacent cell and an average level value of each adjacent cell; determining the priority level of each adjacent cell adjacent to the target cell according to the distance parameter between the target cell and the adjacent cell, the position relation parameter between the target cell and the adjacent cell, the NCS report data of each adjacent cell and the average level value of each adjacent cell; generating a correction weighted value corresponding to the neighboring cell according to the NAVSS algorithm weighted value of the neighboring cell; generating a ranking list of the adjacent regions according to the priority level of each adjacent region and the correction weighted value; and adding and/or deleting the adjacent cells to the target cell according to the adjacent cell ranking table and a preset optimization strategy to realize the switching of the cell in the wireless communication process.
However, the above solutions for pilot frequency handover in solutions 1 to 3 do not perform differentiation optimization on the pilot frequency handover parameters of each cell, and have the defect of "one-time handover"; and in the scheme 4, only the adjacent cells are added and/or deleted to the target cell by the adjacent cell ranking table and the preset optimization strategy, and only the addition and/or deletion optimization of the adjacent cells is limited, but the different frequency switching threshold cannot be optimized.
Disclosure of Invention
Aiming at the defects in the prior art, the embodiment of the invention provides a pilot frequency switching method and a pilot frequency switching device in a TDD-LTE network, which can accurately and efficiently make differentiation on the pilot frequency switching threshold and the pilot frequency switching time delay of each service cell and can realize the refined optimization of cells in the whole network.
In order to solve the technical problems, the invention provides the following technical scheme:
in a first aspect, the present invention provides a pilot frequency handover method in a TDD-LTE network, where the pilot frequency handover method includes:
acquiring MRO measurement data, wherein the MRO measurement data comprises level values and sampling points of all cells in a TDD-LTE network;
acquiring all effective sampling points in a switching zone according to the MRO measurement data, wherein the switching zone is a signal overlapping coverage area of a target service cell and a neighboring cell of the target service cell in the TDD-LTE network;
respectively acquiring a first level value of a target service cell in the switching zone and a second level value of a neighboring cell of the target service cell according to the MRO measurement data, and acquiring level fluctuation data of the neighboring cell in the switching zone;
determining a pilot frequency switching threshold optimization scheme of a target serving cell based on the first level value, the second level value, a preset pilot frequency switching strategy and a parameter threshold value, and determining a pilot frequency switching time lag optimization scheme of the target serving cell according to level fluctuation data of the neighboring cell in the switching zone;
and performing pilot frequency switching on the target serving cell according to the pilot frequency switching threshold optimization scheme and the pilot frequency switching time lag optimization scheme.
In a second aspect, the present invention provides a pilot frequency switching system in a TDD-LTE network, where the pilot frequency switching system includes:
the MRO measurement data acquisition module is used for acquiring MRO measurement data, wherein the MRO measurement data comprises level values and sampling points of all cells in the TDD-LTE network;
the effective sampling point acquisition module is used for acquiring all effective sampling points in a switching zone according to the MRO measurement data, wherein the switching zone is a signal overlapping coverage area of a target service cell and a neighboring zone of the target service cell in the TDD-LTE network;
a level and level fluctuation data acquisition module, configured to acquire, according to the MRO measurement data, a first level value of a target serving cell in the handover band and a second level value of a neighboring cell of the target serving cell, respectively, and acquire level fluctuation data of the neighboring cell in the handover band;
an optimization scheme determining module, configured to determine a pilot frequency switching threshold optimization scheme of a target serving cell based on the first level value, the second level value, a preset pilot frequency switching policy and a parameter threshold value, and determine a pilot frequency switching time lag optimization scheme of the target serving cell according to level fluctuation data of the neighboring cell in the switching zone;
and the pilot frequency switching module is used for performing pilot frequency switching on the target serving cell according to the pilot frequency switching threshold optimization scheme and the pilot frequency switching time lag optimization scheme.
In a third aspect, the present invention provides an electronic device, including a memory, a processor, and a computer program stored in the memory and executable on the processor, where the processor implements the steps of the inter-frequency handover method in the TDD-LTE network when executing the program.
In a fourth aspect, the present invention provides a computer readable storage medium, on which a computer program is stored, which, when being executed by a processor, implements the steps of the inter-frequency handover method in the TDD-LTE network.
According to the technical scheme, the pilot frequency switching method in the TDD-LTE network obtains MRO measurement data, wherein the MRO measurement data comprise level values and sampling points of all cells in the TDD-LTE network; acquiring all effective sampling points in a switching zone according to the MRO measurement data, wherein the switching zone is a signal overlapping coverage area of a target service cell and a neighboring cell of the target service cell in the TDD-LTE network; respectively acquiring a first level value of a target service cell in the switching zone and a second level value of a neighboring cell of the target service cell according to the MRO measurement data, and acquiring level fluctuation data of the neighboring cell in the switching zone; determining a pilot frequency switching threshold optimization scheme of a target serving cell based on the first level value, the second level value, a preset pilot frequency switching strategy and a parameter threshold value, and determining a pilot frequency switching time lag optimization scheme of the target serving cell according to level fluctuation data of the neighboring cell in the switching zone; and performing pilot frequency switching on the target serving cell according to the pilot frequency switching threshold optimization scheme and the pilot frequency switching time lag optimization scheme, so that the pilot frequency switching threshold and the pilot frequency switching time lag of each serving cell can be accurately and efficiently differentiated and formulated on the basis of not testing a switching zone on site, the refined optimization of the whole network cell can be realized, the optimization efficiency is effectively improved, and the optimization cost is greatly reduced.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a flowchart illustrating an inter-frequency handover method in a TDD-LTE network according to a first embodiment of the present invention;
FIG. 2 is a schematic diagram of the relationship between a target serving cell, a neighboring cell and a handover band according to the present invention;
fig. 3 is a flowchart illustrating a step 200 of the inter-frequency handover method in the TDD-LTE network according to the present invention;
fig. 4 is a flowchart illustrating a step 300 of an inter-frequency handover method in a TDD-LTE network according to the present invention;
fig. 5 is a flowchart illustrating a specific application example of the inter-frequency handover method in the TDD-LTE network according to the present invention;
FIG. 6 is a flow chart of a step-by-step process in an embodiment of the present invention;
fig. 7 is a schematic structural diagram of a pilot frequency switching system in a TDD-LTE network according to a second embodiment of the present invention;
fig. 8 is a schematic structural diagram of an electronic device according to a third embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1, a specific implementation of a pilot frequency switching method in a TDD-LTE network according to an embodiment of the present invention is specifically described as follows:
step 100: and acquiring MRO measurement data, wherein the MRO measurement data comprises level values and sampling points of all cells in the TDD-LTE network.
In step 100, the pilot frequency switching system first obtains MRO raw measurement data and analyzes the MRO raw measurement data to obtain MRO measurement data. It can be understood that the MRO measurement data includes level values and sampling points of each cell in the TDD-LTE network, and the data types include: cell ID, eNodeB ID, Ltesc RSRP, Ltesc Earfcn, LtesscPci, Ltesc Earfcn, and LtesncPci.
Step 200: and acquiring all effective sampling points in a switching zone according to the MRO measurement data, wherein the switching zone is a signal overlapping coverage area of a target service cell and a neighboring cell of the target service cell in the TDD-LTE network.
In step 200, the inter-frequency handover system determines effective sampling points in a handover band through a GAP algorithm according to the relation between the RSRP value of the target Serving Cell and the RSRP values of all neighbor CellS Neighbour _ CellS in MRO measurement data, where the relation among the target Serving Cell, the neighbor CellS, and the handover band is shown in fig. 2.
Step 300: and respectively acquiring a first level value of a target service cell in the switching band and a second level value of a neighboring cell of the target service cell according to the MRO measurement data, and acquiring level fluctuation data of the neighboring cell in the switching band.
It is to be understood that the first level value is a level value representing a target serving cell in the handover band, and the second level value is a level value representing a neighboring cell of the target serving cell in the handover band.
Step 400: and determining a pilot frequency switching threshold optimization scheme of the target serving cell based on the first level value, the second level value, a preset pilot frequency switching strategy and a parameter threshold value, and determining a pilot frequency switching time lag optimization scheme of the target serving cell according to level fluctuation data of the adjacent cell in the switching zone.
In step 400, the inter-frequency handover system pre-analyzes the level distribution of the serving cell and the neighboring cell and the level fluctuation of the neighboring cell in the handover band according to the effective sampling points in the handover band, and then differentially formulates the inter-frequency handover threshold and the inter-frequency handover time lag of each serving cell according to the inter-frequency handover strategy, so as to perform fine optimization on the whole network cells, thereby achieving a better parameter configuration suggestion. It can be understood that the inter-frequency handover strategy may be according to the protocol 3GPP
36.331 of LTE related inter-frequency handover events.
In a specific embodiment, the preset inter-frequency handover policy includes: the policy management method comprises a first policy, a second policy and a third policy, wherein each policy comprises three conditions, and specifically comprises the following steps:
the first strategy is: event A1+ Event A2+ Event A2;
the second strategy is: event A1+ Event A2+ Event A4;
the third strategy is: event A1+ Event A2+ Event A5;
wherein, Event A1, Event A2, Event A3, Event A4 and Event A5 are all conditions for establishing different frequency switching; event A1 represents the condition that the signal quality of the target service cell is higher than the preset threshold, and when the Event meeting the condition is reported, the base station stops the measurement of the different frequency/different system; event A2 represents the condition that the signal quality of the target service cell is lower than the preset threshold, and when the Event meeting the condition is reported, the base station starts the measurement of the different frequency/different system; event A3 represents the condition that the quality of the same-frequency adjacent cell is higher than that of the target service cell, and when an Event meeting the condition is reported, the source base station starts a same-frequency switching request; event A4 represents the condition that the quality of the pilot frequency adjacent region is higher than the preset threshold quantity, and when the Event meeting the condition is reported, the source base station starts a pilot frequency switching request; event a5 represents the condition that the target serving cell quality is below a preset threshold and the neighbor cell quality is above a preset threshold.
Step 500: and performing pilot frequency switching on the target serving cell according to the pilot frequency switching threshold optimization scheme and the pilot frequency switching time lag optimization scheme.
In step 500, the pilot frequency switching system outputs the pilot frequency switching threshold of each cell as a pilot frequency switching threshold optimization scheme and outputs the pilot frequency switching time lag of each cell as a pilot frequency switching time lag optimization scheme according to the pilot frequency switching strategy and algorithm of step 400, and performs pilot frequency switching on the target serving cell according to the pilot frequency switching threshold optimization scheme and the pilot frequency switching time lag optimization scheme.
As can be seen from the above description, the pilot frequency switching method in the TDD-LTE network provided in the embodiments of the present invention can accurately and efficiently make a differentiation between the pilot frequency switching threshold and the pilot frequency switching time lag of each serving cell on the basis of not testing the switching zone on site, and can implement fine optimization of the cells in the entire network, and effectively improve the optimization efficiency and greatly reduce the optimization cost.
In a specific embodiment, referring to fig. 3, step 200 in the inter-frequency handover method in the TDD-LTE network of the present invention specifically includes the following steps:
step 201: and respectively acquiring sampling points of a target service cell and a neighboring cell of the target service cell in the MRO measurement data.
Step 202: and screening the sampling points according to a preset condition to obtain the sampling points meeting the preset condition.
Step 203: and screening all sampling points meeting the preset condition according to the level values of the target serving cell and the adjacent cell of the target serving cell to obtain effective sampling points positioned in the switching zone.
In step 203, the inter-frequency handover system obtains the level values of the target serving cell and the neighboring cell of the target serving cell in the MRO measurement data, respectively; calculating to obtain the level difference between the target serving cell and the adjacent cell of the target serving cell according to the level values of the target serving cell and the adjacent cell of the target serving cell; and screening out sampling points which are less than or equal to the level difference from all sampling points which meet the preset condition to serve as effective sampling points located in the switching band.
In steps 201 to 203, the effective sampling points are defined as the number of sampling points or MRO data whose ratio reaches a certain number, and the standard is all the sampling points whose adjacent area is greater than QTY 1. Wherein QTY1 represents a threshold for the number of valid sample points or the duty cycle requirement to reach.
As can be seen from the above description, the pilot frequency switching method in the TDD-LTE network according to the embodiment of the present invention can effectively and efficiently obtain all effective sampling points in a switching zone according to the MRO measurement data, so as to provide an accurate data base for subsequent pilot frequency switching.
In one embodiment, the valid sampling points located within the switching band comprise: correspondingly, referring to fig. 4, the step 300 of the inter-frequency handover method in the TDD-LTE network of the present invention specifically includes the following steps:
step 301: and respectively acquiring the level value of each first sampling point and the level value of each second sampling point in the MRO measurement data.
Step 302: and carrying out weighted average calculation on the level values of all the first sampling points to obtain a first level value of a target service cell in the switching zone, and carrying out weighted average calculation on the level values of all the second sampling points to obtain a second level value of a neighboring cell of the target service cell in the switching zone.
Step 303: and calculating to obtain the level fluctuation data of the adjacent cell in the switching zone.
In step 303, the inter-frequency handover system calculates a standard deviation of the levels of the neighboring cells in the handover band according to the number of the neighboring cells adjacent to each other in the handover band, the level value of each neighboring cell adjacent to each other, and the average value of the levels of the same neighboring cells adjacent to each other; and acquiring the level fluctuation coefficient of the adjacent cell in the switching band according to the standard deviation of the level of the adjacent cell in the switching band.
As can be seen from the above description, the pilot frequency switching method in the TDD-LTE network according to the embodiment of the present invention can accurately obtain the first level value of the target serving cell and the second level value of the neighboring cell of the target serving cell in the handover band according to the MRO measurement data, and obtain the level fluctuation data of the neighboring cell in the handover band, thereby providing an accurate and reliable data basis for subsequently selecting the pilot frequency switching threshold optimization scheme and the pilot frequency switching time lag optimization scheme according to the above data.
To further illustrate the present solution, the present invention further provides a specific application example of the pilot frequency switching method in the TDD-LTE network, where a switching zone is determined according to the level distribution of the serving cell and the neighboring cell and the GAP algorithm, the pilot frequency switching threshold value of each cell is determined by using the level distribution of the serving cell and the neighboring cell, and a reasonable pilot frequency time lag is determined by combining the fluctuation of the level of the neighboring cell in the switching zone, as shown in fig. 5, the pilot frequency switching method in the TDD-LTE network of the present invention specifically includes the following contents:
step S11: acquiring analyzed MRO original data, wherein the MRO data requires measurement level and sampling point related information of related service cells and adjacent cells, such as a service cell CellID, an eNodeB ID, an LteSc RSRP, an LteNc RSRP, an LteSc Earfcn, an LteScPci, an LteNc Earfcn, an LteNcPci and the like, and providing complete and reliable data analysis for step S12.
Step S12: the MRO data obtained in step S11 is processed in steps with reference to the process of fig. 6, and more reasonable level thresholds of the main service cell and the neighboring cell and fluctuation conditions of the neighboring cell in the handover band are evaluated according to a scientific calculation method, and the specific processing steps are as follows:
step S21, effective sampling point screening: the effective sampling points are defined as MRO data with the quantity of sampling points or the proportion reaching a certain quantity, and the standard is that all the sampling points of adjacent regions to the sampling point number > QTY 1. Wherein QTY1 represents the threshold value reached by the number of valid sampling points or the ratio requirement;
step S22, switching band prejudgment: determining the level difference value between the main service cell and the adjacent cell in MRO data to reach a certain threshold value, and determining the level difference value as a switching in-band sampling point, wherein the switching in-band pre-judging algorithm is defined as a GAP algorithm, and the definition standard of the switching in-band sampling point is as follows:
switching in-band sampling point definition: and the absolute value of the difference value between the RSRP of the serving cell and the RSRP of the adjacent cell is less than or equal to all sampling points of a Threshold value Threshold S set by the switching zone.
GAP algorithm calculation formula: switching band sampling point (P)Switching belt)＝
All sampling points of | Ms _ RSRP-Mn _ RSRP | ≦ Threshold S.
Wherein Ms _ RSRP represents a signal level value of a serving cell in MRO;
mn _ RSRP represents a signal level value of an adjacent cell in the MRO;
threshold S represents the absolute value Threshold value of the level difference between the serving cell and the adjacent cell;
step S23, switching to take main service and adjacent area level estimation: according to switching band sampling point (P)Switching belt) Carrying out weighted average calculation on the level values of each service cell and each adjacent cell, and respectively calculating the level values of the service cell and the adjacent cell in the switching band, wherein the level calculation formula of the switching band of the service cell in the switching band is as follows:
Figure BDA0001530526040000101
the level calculation formula of the switching zone of the adjacent zone in the switching zone is as follows:
Figure BDA0001530526040000102
Figure BDA0001530526040000103
Figure BDA0001530526040000104
…
Figure BDA0001530526040000105
Figure BDA0001530526040000111
wherein the content of the first and second substances,
Figure BDA0001530526040000112
an average value representing a level value of a master serving cell in a handover band;
Figure BDA0001530526040000113
an average value representing a level value of an in-band neighbor of the handover;
n1, n2, … and nn respectively represent Mn _ RSRP1、Mn_RSRP2、Mn_RSRP3…Mn_RSRPnThe sampling number of the adjacent area sampling points;
f1、f2、f3…fnindividual watch
Figure BDA0001530526040000114
The corresponding weight;
step S24, evaluating the level fluctuation condition of the switching zone neighbor: evaluating the adjacent cell level of the effective sampling point in the switching band in the step S22, defining a signal fluctuation coefficient CV, and estimating the fluctuation condition according to a standard deviation calculation formula, wherein the standard deviation of the adjacent cell level is sigma, and the standard deviation calculation formula is as follows:
Figure BDA0001530526040000115
the signal fluctuation coefficient CV is calculated as follows:
the signal fluctuation coefficient CV ═ i (σ ÷ μ) | × 100%
Wherein, σ is the magnitude of the deviation of the level of N adjacent regions from the average level value;
n represents the number of adjacent same adjacent regions, and the N value is less than 10;
mu represents the average value of N same adjacent region levels;
xirepresenting adjacent N same adjacent zone level values;
step S13: calculated according to step S12
Figure BDA0001530526040000116
And
Figure BDA0001530526040000117
and (4) configuring parameters by combining the pilot frequency switching strategy and the parameter threshold value.
(1) When using strategy 1: in the inter-frequency switching strategy of Event 1+ Event A2+ Event A3, the threshold setting algorithms of Event A1, Event A2 and Event A3 are as follows:
Event A3＝ThresholdC
Figure BDA0001530526040000118
Event A1＝Event A2+Offset2
(2) when strategy 2 is used: in the inter-frequency switching strategy of Event A1+ Event A2+ Event A4, the threshold setting algorithms of Event A1, Event A2 and Event A4 are as follows:
Figure BDA0001530526040000121
Figure BDA0001530526040000122
Event A1＝Event A2+Offset2
(3) when policy 3 is used: in the inter-frequency switching strategy of Event 1+ Event A2+ Event A5, the threshold setting algorithms of Event A1, Event A2 and Event A5 are as follows:
Figure BDA0001530526040000123
Figure BDA0001530526040000124
Figure BDA0001530526040000125
Event A1＝Event A2+Offset2
(4) determining a threshold value of the switching time lag according to the range of the fluctuation coefficient sigma of the level of the adjacent neighbor cell calculated in step S24, wherein the criterion of the switching time lag is as follows:
when the signal fluctuation coefficient CV is less than or equal to ThresholdT, the pilot frequency switching time lag is set as TimeToTrigger 1;
when the signal fluctuation coefficient CV > ThresholdT, the inter-frequency switching time lag is set to TimeToTrigger 2.
Among them, Event a1(Serving belcoms better than threshold): the quality of the signal of the service cell is higher than a certain threshold, and when the event meeting the condition is reported, the eNodeB stops the measurement of the different frequency/different system;
event a2(Serving belongings word threshold): when the signal quality of the serving cell is lower than a certain threshold and an event meeting the condition is reported, the eNodeB starts the measurement of the pilot frequency/the pilot system;
event A3 (neighbor books offset better than serving): the quality of the same-frequency adjacent cell is higher than that of the service cell, and when an event meeting the condition is reported, the source eNodeB starts a same-frequency switching request;
event A4 (neighbor books between the threshold): the quality of the pilot frequency adjacent cell is higher than a certain threshold, and when an event meeting the condition is reported, the source eNodeB starts a pilot frequency switching request;
event a5(Serving boiler threshold1and neighbor boiler threshold 2): indicating that the quality of the service cell is lower than a certain threshold and the quality of the adjacent cell is higher than a certain threshold;
threshold C: a threshold value set to represent Event a 3;
threshold1(Event a 5): a Threshold value Threshold1 indicating that the serving cell needs to be lower in Event a 5;
threshold2(Event a 5): a Threshold value Threshold2 indicating that the neighbor cell needs to be higher in Event a 5;
offset 1: indicating Event A2 value relative to
Figure BDA0001530526040000131
The offset of (2);
offset 2: represents the offset of the Event A1 value relative to the Event A2;
offset 3: represents the Threshold1(Event A5) value in Event A5 relative to
Figure BDA0001530526040000132
The offset of (2);
offset 4: represents the Threshold2(Event A5) value in Event A5 relative to
Figure BDA0001530526040000133
The offset of (2);
threshold represents a threshold value of the signal fluctuation coefficient;
TimeToTrigger1 represents a small value of inter-frequency switching time lag;
TimeToTrigger2 indicates a larger value of inter-frequency handover time lag;
step S14: and (4) outputting the pilot frequency switching threshold and the pilot frequency switching time lag of each cell according to the pilot frequency switching strategy and algorithm of the step (13).
In a specific example, evaluating a pre-analysis scheme and a handover in-band neighbor level fluctuation condition from a handover in-band serving cell and a neighbor cell specifically includes:
(1) and acquiring analyzed MRO original data, wherein the MRO data requires measurement level and sampling point related information of related service cells and adjacent cells, such as a service cell CellID, an eNodeB ID, an LteSc RSRP, an LteNc RSRP, an LteSc Earfcn, an LteScPci, an LteNc Earfcn, an LteNcPci and the like.
(2) And step-by-step processing is performed on the MRO data obtained in step S11, and more reasonable level thresholds of the main service cell and the neighboring cell in the handover band are evaluated according to objective MRO data and a scientific calculation method.
(2-1) screening effective sampling points, summarizing the sampling points of the same service cell and adjacent cells, determining the number of the sampling points of each adjacent cell pair, wherein for the situation that the number of the sampling points is greater than a threshold value QTY1, the threshold value of the QTY1 in the embodiment is 1000, namely, the judgment that the number of the sampling points of the adjacent cells is greater than 1000 is effective sampling point data, and in actual application, the threshold value range which can be set by a general QTY1 is [500,10000 ]. Or the ratio of the adjacent cells to the total number of the effective total sampling points is the QTY1 threshold value, and the QTY1 threshold value is set as [ 5%, 10% ].
(2-2) switching zone prejudging, wherein the Threshold value of Threshold S is set to 3dBm by calculating that the level difference between the main serving cell and the adjacent cell in MRO data reaches a certain Threshold value Threshold S, that is, all sampling points in an effective sampling point | Ms _ RSRP-Mn _ RSRP | is less than or equal to 3dBm are switching zone internal sampling point data. The Threshold value of Threshold S is typically set to [3,5 ].
(2-3) estimating the level of the main clothes and the adjacent areas of the switching band according to the sampling point (P) of the switching bandSwitching belt) And carrying out weighted average calculation on the level values of each service cell and each adjacent cell, and respectively calculating the level values of the service cells and the adjacent cells in the switching band.
(2-4) evaluating the fluctuation condition of the switching zone adjacent zone level, evaluating the adjacent zone level of the effective sampling point in the switching zone in the step S22, defining a signal fluctuation coefficient CV, calculating a standard deviation sigma of the adjacent zone signal level according to a standard deviation calculation formula, and calculating the adjacent zone signal fluctuation coefficient CV according to a signal fluctuation coefficient formula CV ═ σ ÷ mu) multiplied by 100%.
(3) Calculated according to step S12
Figure BDA0001530526040000141
And
Figure BDA0001530526040000142
and configuring parameters by the pilot frequency switching strategy and the parameter threshold value. The configuration ranges of the parameters and the threshold values are shown in the following table 1:
TABLE 1
Figure BDA0001530526040000151
Specifically, which pilot frequency switching strategy is used in the pilot frequency switching process is selected according to the requirements of the site, and since the proposal belongs to the technical field of obtaining the pilot frequency switching threshold and the pilot frequency switching time lag through scientific calculation after the switching band is accurately judged, the strategy 2 or the strategy 3 is recommended to be used for configuring the pilot frequency switching parameters.
(4) And (4) outputting the pilot frequency switching threshold and the pilot frequency switching time lag of each cell according to the pilot frequency switching strategy and algorithm of the step (13).
As can be seen from the above description, the pilot frequency switching method in the TDD-LTE network according to the application example of the present invention can perform fine configuration on the differentiated pilot frequency switching policy and the switching parameter for the cells in the entire network, and can independently set different parameter threshold values according to the coverage characteristics of different cells and neighboring cells; the switching band is not required to be tested on site, and the coverage condition of the switching band can be determined according to the level condition reported by the MRO measurement of the serving cell and the neighbor cell and the switching band identification strategy. Compared with field test data, the MRO data has more comprehensive data sources and higher data reliability; different frequency switching of each cell is not needed to be analyzed manually one by one, and different frequency switching threshold parameters of each cell can be automatically output according to the coverage condition of the switching band which is automatically identified; and more objective data obtained by a scientific calculation method according to the standard sampling of the 3GPP protocol is used as a basis for formulating the switching parameters, and the data is more accurate and reasonable.
Referring to fig. 7, a specific implementation manner of a pilot frequency switching system in a TDD-LTE network, which is capable of implementing all contents of a pilot frequency switching method in the TDD-LTE network according to a second embodiment of the present invention, includes the following contents:
an MRO measurement data obtaining module 10, configured to obtain MRO measurement data, where the MRO measurement data includes a level value and a sampling point of each cell in the TDD-LTE network;
and an effective sampling point obtaining module 20, configured to obtain all effective sampling points in a handover zone according to the MRO measurement data, where the handover zone is a signal overlapping coverage area of a target serving cell and a neighboring cell of the target serving cell in the TDD-LTE network.
The valid sampling point obtaining module 20 further specifically includes: a sampling point obtaining unit, configured to obtain, in the MRO measurement data, sampling points of a target serving cell and a neighboring cell of the target serving cell, respectively; the sampling point screening unit is used for screening the sampling points according to preset conditions to obtain the sampling points meeting the preset conditions; and the effective sampling point acquisition unit screens all the sampling points meeting the preset condition according to the level values of the target serving cell and the adjacent cell of the target serving cell to obtain effective sampling points positioned in the switching zone.
A level and level fluctuation data obtaining module 30, configured to obtain, according to the MRO measurement data, a first level value of a target serving cell in the handover band and a second level value of a neighboring cell of the target serving cell, respectively, and obtain level fluctuation data of the neighboring cell in the handover band;
an optimization scheme determining module 40, configured to determine a pilot frequency switching threshold optimization scheme of the target serving cell based on the first level value, the second level value, a preset pilot frequency switching policy and a parameter threshold value, and determine a pilot frequency switching time lag optimization scheme of the target serving cell according to level fluctuation data of the neighboring cell in the switching zone;
and a pilot frequency switching module 50, configured to perform pilot frequency switching on the target serving cell according to the pilot frequency switching threshold optimization scheme and the pilot frequency switching time lag optimization scheme.
The embodiment of the pilot frequency switching system in the TDD-LTE network in this embodiment may be specifically configured to execute the processing procedure of the embodiment of the pilot frequency switching method in the TDD-LTE network, and the function of the processing procedure is not described herein again, and reference may be made to the detailed description of the method embodiment.
As can be seen from the above description, the pilot frequency switching system in the TDD-LTE network in the embodiment of the present invention can accurately and efficiently make a differentiation between the pilot frequency switching threshold and the pilot frequency switching time lag of each serving cell on the basis of not testing a switching zone on the spot, so as to implement fine optimization of cells in the whole network, effectively improve optimization efficiency, and greatly reduce optimization cost.
An embodiment of the present invention provides a specific implementation manner of an electronic device capable of implementing all steps in the inter-frequency handover method in the TDD-LTE network, and referring to fig. 8, the electronic device specifically includes the following contents:
a processor (processor)601, a memory (memory)602, a communication Interface (Communications Interface)603, and a bus 604;
the processor 601, the memory 602 and the communication interface 603 complete mutual communication through the bus 604; the communication interface 603 is used for implementing information transmission between the base station and the server and other related devices;
the processor 601 is configured to call the computer program in the memory 602, and the processor implements all the steps in the first embodiment when executing the computer program, for example, the processor implements the following steps when executing the computer program:
step 100: and acquiring MRO measurement data, wherein the MRO measurement data comprises level values and sampling points of all cells in the TDD-LTE network.
Step 200: and acquiring all effective sampling points in a switching zone according to the MRO measurement data, wherein the switching zone is a signal overlapping coverage area of a target service cell and a neighboring cell of the target service cell in the TDD-LTE network.
Step 300: and respectively acquiring a first level value of a target service cell in the switching band and a second level value of a neighboring cell of the target service cell according to the MRO measurement data, and acquiring level fluctuation data of the neighboring cell in the switching band.
Step 400: and determining a pilot frequency switching threshold optimization scheme of the target serving cell based on the first level value, the second level value, a preset pilot frequency switching strategy and a parameter threshold value, and determining a pilot frequency switching time lag optimization scheme of the target serving cell according to level fluctuation data of the adjacent cell in the switching zone.
Step 500: and performing pilot frequency switching on the target serving cell according to the pilot frequency switching threshold optimization scheme and the pilot frequency switching time lag optimization scheme.
As can be seen from the above description, the electronic device in the embodiment of the present invention can accurately and efficiently make differentiation on the pilot frequency handover threshold and the pilot frequency handover time lag of each serving cell without testing a handover band on site, can implement fine optimization of cells in the whole network, and effectively improves optimization efficiency and greatly reduces optimization cost.
An embodiment four of the present invention provides a computer-readable storage medium capable of implementing all the steps in the inter-frequency handover method in the TDD-LTE network, where the computer-readable storage medium stores a computer program, and the computer program implements all the steps of the first embodiment when being executed by a processor, for example, the processor implements the following steps when executing the computer program:
step 100: and acquiring MRO measurement data, wherein the MRO measurement data comprises level values and sampling points of all cells in the TDD-LTE network.
Step 200: and acquiring all effective sampling points in a switching zone according to the MRO measurement data, wherein the switching zone is a signal overlapping coverage area of a target service cell and a neighboring cell of the target service cell in the TDD-LTE network.
Step 300: and respectively acquiring a first level value of a target service cell in the switching band and a second level value of a neighboring cell of the target service cell according to the MRO measurement data, and acquiring level fluctuation data of the neighboring cell in the switching band.
Step 400: and determining a pilot frequency switching threshold optimization scheme of the target serving cell based on the first level value, the second level value, a preset pilot frequency switching strategy and a parameter threshold value, and determining a pilot frequency switching time lag optimization scheme of the target serving cell according to level fluctuation data of the adjacent cell in the switching zone.
Step 500: and performing pilot frequency switching on the target serving cell according to the pilot frequency switching threshold optimization scheme and the pilot frequency switching time lag optimization scheme.
As can be seen from the above description, the computer-readable storage medium in the embodiment of the present invention can accurately and efficiently make differentiation on the inter-frequency handover threshold and the inter-frequency handover time lag of each serving cell on the basis of not testing a handover band on site, can implement fine optimization of cells in the entire network, and effectively improves optimization efficiency and greatly reduces optimization cost.
Those of ordinary skill in the art will understand that: all or part of the steps for implementing the method embodiments may be implemented by hardware related to program instructions, and the program may be stored in a computer readable storage medium, and when executed, the program performs the steps including the method embodiments; and the aforementioned storage medium includes: various media that can store program codes, such as ROM, RAM, magnetic or optical disks.
The above-described embodiments of the inter-frequency handover system in the TDD-LTE network are merely illustrative, where the units described as the separate components may or may not be physically separate, and the components displayed as the units may or may not be physical units, that is, may be located in one place, or may also be distributed on multiple network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of the present embodiment. One of ordinary skill in the art can understand and implement it without inventive effort.
Through the above description of the embodiments, those skilled in the art will clearly understand that each embodiment can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware. With this understanding in mind, the above-described technical solutions may be embodied in the form of a software product, which can be stored in a computer-readable storage medium such as ROM/RAM, magnetic disk, optical disk, etc., and includes instructions for enabling a large data transmission device (which may be a personal computer, a server, or a network device, etc.) to execute the methods described in the embodiments or some parts of the embodiments.
Finally, it should be noted that: the above embodiments are only used for illustrating the technical solutions of the embodiments of the present invention, and are not limited thereto; although embodiments of the present invention have been described in detail with reference to the foregoing embodiments, those skilled in the art will understand that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.

Claims (9)

1. A pilot frequency switching method in a TDD-LTE network is characterized in that the pilot frequency switching method comprises the following steps:
acquiring MRO measurement data, wherein the MRO measurement data comprises level values and sampling points of all cells in a TDD-LTE network;
acquiring all effective sampling points in a switching zone according to the MRO measurement data, wherein the switching zone is a signal overlapping coverage area of a target service cell and a neighboring cell of the target service cell in the TDD-LTE network;
respectively acquiring a first level value of a target service cell in the switching zone and a second level value of a neighboring cell of the target service cell according to the MRO measurement data, and acquiring level fluctuation data of the neighboring cell in the switching zone;
determining a pilot frequency switching threshold optimization scheme of a target serving cell based on the first level value, the second level value, a preset pilot frequency switching strategy and a parameter threshold value, and determining a pilot frequency switching time lag optimization scheme of the target serving cell according to level fluctuation data of the neighboring cell in the switching zone;
and performing pilot frequency switching on the target serving cell according to the pilot frequency switching threshold optimization scheme and the pilot frequency switching time lag optimization scheme;
the determining of the pilot frequency switching threshold optimization scheme of the target serving cell based on the first level value, the second level value, the preset pilot frequency switching strategy and the parameter threshold value includes:
when using the inter-frequency switching strategy of Event 1+ Event A2+ Event A3, the threshold setting algorithms of Event A1, Event A2 and Event A3 are as follows:
Event A3＝ThresholdC
Figure FDA0003412258310000011
Event A1＝Event A2+Offset2；
when using the inter-frequency switching strategy of Event A1+ Event A2+ Event A4, the threshold setting algorithms of Event A1, Event A2 and Event A4 are as follows:
Figure FDA0003412258310000012
Figure FDA0003412258310000021
Event A1＝Event A2+Offset2；
when using the inter-frequency switching strategy of Event 1+ Event A2+ Event A5, the threshold setting algorithms of Event A1, Event A2 and Event A5 are as follows:
Figure FDA0003412258310000022
Figure FDA0003412258310000023
Figure FDA0003412258310000024
Event A1＝Event A2+Offset2；
wherein, Event a1 indicates that the quality of the serving cell signal is higher than a certain threshold, and when an Event meeting the condition is reported, the eNodeB stops the inter-frequency/inter-system measurement; event A2 shows that the quality of the signal of the serving cell is lower than a certain threshold, and when the Event meeting the condition is reported, the eNodeB starts the measurement of the different frequency/different system; event A3 shows that the quality of the co-frequency adjacent cell is higher than that of the service cell, and when an Event meeting the condition is reported, the source eNodeB starts a co-frequency switching request; event A4 shows that the quality of the pilot frequency adjacent cell is higher than a certain threshold, and when an Event meeting the condition is reported, the source eNodeB starts a pilot frequency switching request; event a5 indicates that the quality of the serving cell is below a certain threshold and the quality of the neighbor cell is above a certain threshold; ThresholdC represents the threshold value set by Event A3; threshold1(Event a5) indicates a Threshold value Threshold1 below which the serving cell in Event a5 needs to be; threshold2(Event a5) indicates a Threshold value Threshold2 above which neighbor cells in Event a5 need to be; offset1 indicates that Event A2 value is relative to
Figure FDA0003412258310000025
The offset of (2); offset2 indicates that Event A1 values are relative to EvsOffset of ent a 2; offset3 represents the Threshold1(Event A5) value in Event A5 relative to the value of Event A5
Figure FDA0003412258310000026
The offset of (2); offset4 represents the Threshold2(Event A5) value in Event A5 relative to the value of Event A5
Figure FDA0003412258310000027
The offset of (2);
Figure FDA0003412258310000028
an average value representing a level value of a master serving cell in a handover band;
Figure FDA0003412258310000029
an average value representing a level value of an in-band neighbor of the handover;
the determining of the pilot frequency switching time lag optimization scheme of the target serving cell according to the level fluctuation data of the neighboring cell in the switching zone includes:
when the signal fluctuation coefficient CV is less than or equal to ThresholdT, the pilot frequency switching time lag is set as TimeToTrigger 1;
when the signal fluctuation coefficient CV is greater than ThresholdT, the pilot frequency switching time lag is set as TimeToTrigger 2;
wherein CV represents a signal fluctuation coefficient, threshold represents a threshold value of the signal fluctuation coefficient, TimeToTrigger1 represents a smaller value of the inter-frequency switching time lag, and TimeToTrigger2 represents a larger value of the inter-frequency switching time lag.
2. The inter-frequency handover method according to claim 1, wherein the obtaining all valid sampling points in a handover band according to the MRO measurement data, where the handover band is a signal overlapping coverage area of a target serving cell and a neighboring cell of the target serving cell in a TDD-LTE network, comprises:
respectively acquiring sampling points of a target service cell and a neighboring cell of the target service cell in the MRO measurement data;
screening the sampling points according to preset conditions to obtain sampling points meeting the preset conditions;
and screening effective sampling points positioned in the switching zone from all sampling points meeting the preset condition according to the level values of the target service cell and the adjacent cell of the target service cell.
3. The inter-frequency handover method according to claim 2, wherein the step of screening, according to the level values of the target serving cell and the neighboring cell of the target serving cell, valid sampling points located in the handover zone from all sampling points satisfying the preset condition comprises:
respectively acquiring level values of the target serving cell and a neighboring cell of the target serving cell from the MRO measurement data;
calculating to obtain the level difference between the target serving cell and the adjacent cell of the target serving cell according to the level values of the target serving cell and the adjacent cell of the target serving cell;
and screening out sampling points which are less than or equal to the level difference from all sampling points which meet the preset condition to serve as effective sampling points located in the switching band.
4. The inter-frequency handover method according to claim 3, wherein the valid sampling points located in the handover band comprise: a first sampling point belonging to a target service cell in the handover band and a second sampling point belonging to a neighboring cell of the target service cell in the handover band;
correspondingly, the obtaining a first level value of a target serving cell in the handover band and a second level value of a neighboring cell of the target serving cell according to the MRO measurement data, and obtaining level fluctuation data of the neighboring cell in the handover band respectively includes:
respectively acquiring the level value of each first sampling point and the level value of each second sampling point in the MRO measurement data;
carrying out weighted average calculation on the level values of all the first sampling points to obtain a first level value of a target service cell in the switching zone, and carrying out weighted average calculation on the level values of all the second sampling points to obtain a second level value of a neighboring cell of the target service cell in the switching zone;
and calculating to obtain the level fluctuation data of the adjacent cell in the switching zone.
5. The inter-frequency handover method according to claim 4, wherein the calculating the level fluctuation data of the neighboring cell in the handover band comprises:
calculating to obtain a standard deviation of the levels of the adjacent cells in the switching band according to the number of the adjacent cells in the switching band, the level value of each adjacent cell and the average value of the levels of the same adjacent cells;
and acquiring the level fluctuation coefficient of the adjacent cell in the switching band according to the standard deviation of the level of the adjacent cell in the switching band.
6. A pilot frequency switching system in a TDD-LTE network, characterized in that the pilot frequency switching system comprises:
the MRO measurement data acquisition module is used for acquiring MRO measurement data, wherein the MRO measurement data comprises level values and sampling points of all cells in the TDD-LTE network;
the effective sampling point acquisition module is used for acquiring all effective sampling points in a switching zone according to the MRO measurement data, wherein the switching zone is a signal overlapping coverage area of a target service cell and a neighboring zone of the target service cell in the TDD-LTE network;
a level and level fluctuation data acquisition module, configured to acquire, according to the MRO measurement data, a first level value of a target serving cell in the handover band and a second level value of a neighboring cell of the target serving cell, respectively, and acquire level fluctuation data of the neighboring cell in the handover band;
an optimization scheme determining module, configured to determine a pilot frequency switching threshold optimization scheme of a target serving cell based on the first level value, the second level value, a preset pilot frequency switching policy and a parameter threshold value, and determine a pilot frequency switching time lag optimization scheme of the target serving cell according to level fluctuation data of the neighboring cell in the switching zone;
the pilot frequency switching module is used for performing pilot frequency switching on the target serving cell according to the pilot frequency switching threshold optimization scheme and the pilot frequency switching time lag optimization scheme;
the level and level fluctuation data acquisition module is specifically configured to:
when using the inter-frequency switching strategy of Event 1+ Event A2+ Event A3, the threshold setting algorithms of Event A1, Event A2 and Event A3 are as follows:
Event A3＝ThresholdC
Figure FDA0003412258310000051
Event A1＝Event A2+Offset2；
when using the inter-frequency switching strategy of Event A1+ Event A2+ Event A4, the threshold setting algorithms of Event A1, Event A2 and Event A4 are as follows:
Figure FDA0003412258310000052
Figure FDA0003412258310000053
Event A1＝Event A2+Offset2；
when using the inter-frequency switching strategy of Event 1+ Event A2+ Event A5, the threshold setting algorithms of Event A1, Event A2 and Event A5 are as follows:
Figure FDA0003412258310000054
Figure FDA0003412258310000055
Figure FDA0003412258310000056
Event A1＝Event A2+Offset2；
wherein, Event a1 indicates that the quality of the serving cell signal is higher than a certain threshold, and when an Event meeting the condition is reported, the eNodeB stops the inter-frequency/inter-system measurement; event A2 shows that the quality of the signal of the serving cell is lower than a certain threshold, and when the Event meeting the condition is reported, the eNodeB starts the measurement of the different frequency/different system; event A3 shows that the quality of the co-frequency adjacent cell is higher than that of the service cell, and when an Event meeting the condition is reported, the source eNodeB starts a co-frequency switching request; event A4 shows that the quality of the pilot frequency adjacent cell is higher than a certain threshold, and when an Event meeting the condition is reported, the source eNodeB starts a pilot frequency switching request; event a5 indicates that the quality of the serving cell is below a certain threshold and the quality of the neighbor cell is above a certain threshold; ThresholdC represents the threshold value set by Event A3; threshold1(Event a5) indicates a Threshold value Threshold1 below which the serving cell in Event a5 needs to be; threshold2(Event a5) indicates a Threshold value Threshold2 above which neighbor cells in Event a5 need to be; offset1 indicates that Event A2 value is relative to
Figure FDA0003412258310000061
The offset of (2); offset2 represents the Offset of the Event A1 value relative to Event A2; offset3 represents the Threshold1(Event A5) value in Event A5 relative to the value of Event A5
Figure FDA0003412258310000062
The offset of (2); offset4 represents the Threshold2(Event A5) value in Event A5 relative to the value of Event A5
Figure FDA0003412258310000063
The offset of (2);
Figure FDA0003412258310000064
an average value representing a level value of a master serving cell in a handover band;
Figure FDA0003412258310000065
an average value representing a level value of an in-band neighbor of the handover;
when the signal fluctuation coefficient CV is less than or equal to ThresholdT, the pilot frequency switching time lag is set as TimeToTrigger 1;
when the signal fluctuation coefficient CV is greater than ThresholdT, the pilot frequency switching time lag is set as TimeToTrigger 2;
wherein CV represents a signal fluctuation coefficient, threshold represents a threshold value of the signal fluctuation coefficient, TimeToTrigger1 represents a smaller value of the inter-frequency switching time lag, and TimeToTrigger2 represents a larger value of the inter-frequency switching time lag.
7. The pilot frequency switching system according to claim 6, wherein the valid sampling point obtaining module comprises:
a sampling point obtaining unit, configured to obtain, in the MRO measurement data, sampling points of a target serving cell and a neighboring cell of the target serving cell, respectively;
the sampling point screening unit is used for screening the sampling points according to preset conditions to obtain the sampling points meeting the preset conditions;
and the effective sampling point acquisition unit screens all the sampling points meeting the preset condition according to the level values of the target serving cell and the adjacent cell of the target serving cell to obtain effective sampling points positioned in the switching zone.
8. An electronic device comprising a memory, a processor and a computer program stored on the memory and executable on the processor, wherein the processor when executing the program implements the steps of the inter-frequency handover method in the TDD-LTE network according to any of claims 1 to 5.
9. A computer-readable storage medium, on which a computer program is stored, which, when being executed by a processor, carries out the steps of the inter-frequency handover method in a TDD-LTE network according to any one of claims 1 to 5.
CN201711462211.7A 2017-12-28 2017-12-28 Pilot frequency switching method and device in TDD-LTE network Active CN109982352B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201711462211.7A CN109982352B (en) 2017-12-28 2017-12-28 Pilot frequency switching method and device in TDD-LTE network

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201711462211.7A CN109982352B (en) 2017-12-28 2017-12-28 Pilot frequency switching method and device in TDD-LTE network

Publications (2)

Publication Number Publication Date
CN109982352A CN109982352A (en) 2019-07-05
CN109982352B true CN109982352B (en) 2022-04-15

Family

ID=67074808

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201711462211.7A Active CN109982352B (en) 2017-12-28 2017-12-28 Pilot frequency switching method and device in TDD-LTE network

Country Status (1)

Country Link
CN (1) CN109982352B (en)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112218343B (en) * 2019-07-12 2023-09-05 中国移动通信集团吉林有限公司 Cell different frequency switching method, device and computer equipment
CN112243272B (en) * 2019-07-16 2022-12-16 中国移动通信集团浙江有限公司 Pilot frequency switching method and device
CN112770362B (en) * 2019-10-21 2022-11-29 中国移动通信集团安徽有限公司 Cell switching method, device and equipment
CN113365316B (en) * 2020-03-05 2022-08-12 中国移动通信集团吉林有限公司 Method and device for selecting inter-system neighbor cells, computer equipment and storage medium
CN114513807B (en) * 2020-11-16 2023-10-17 中国移动通信集团有限公司 Method, device, equipment and storage medium for determining network switching parameters
CN114650542B (en) * 2020-12-18 2023-06-27 中国联合网络通信集团有限公司 VOLTE hierarchical parameter adjustment method, device, equipment and storage medium
CN112888037A (en) * 2021-01-26 2021-06-01 温州职业技术学院 Machine vision information sending method and machine vision remote identification system
CN114630378B (en) * 2021-03-26 2024-01-09 亚信科技（南京）有限公司 Network split determination method, device, server and storage medium

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1599471A (en) * 2003-09-17 2005-03-23 华为技术有限公司 Realization method and device for controlling load balance in communication system
CN101370294A (en) * 2008-10-06 2009-02-18 深圳华为通信技术有限公司 Terminal cell switching method and communication terminal
CN101808358A (en) * 2009-02-18 2010-08-18 株式会社Ntt都科摩 Measurement switching method and device in mobile communication
WO2011134360A1 (en) * 2010-04-30 2011-11-03 电信科学技术研究院 Measurement configuration method for multi-carrier system and equipment thereof
CN102364980A (en) * 2011-10-12 2012-02-29 中兴通讯股份有限公司 Method and user equipment (UE) for dynamically controlling inner-loop power
CN102638831A (en) * 2011-02-12 2012-08-15 中兴通讯股份有限公司 Handover parameter optimization method and system
EP2683191A1 (en) * 2012-07-02 2014-01-08 Alcatel-Lucent Inter-cell interference coordination for co-channel heterogeneous networks
CN105744534A (en) * 2016-01-20 2016-07-06 任柏松 FDD-LTE different-frequency networking method based on frequency migration
CN107040940A (en) * 2016-02-03 2017-08-11 中国移动通信集团浙江有限公司 A kind of threshold regulating method and device

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1599471A (en) * 2003-09-17 2005-03-23 华为技术有限公司 Realization method and device for controlling load balance in communication system
CN101370294A (en) * 2008-10-06 2009-02-18 深圳华为通信技术有限公司 Terminal cell switching method and communication terminal
CN101808358A (en) * 2009-02-18 2010-08-18 株式会社Ntt都科摩 Measurement switching method and device in mobile communication
WO2011134360A1 (en) * 2010-04-30 2011-11-03 电信科学技术研究院 Measurement configuration method for multi-carrier system and equipment thereof
CN102638831A (en) * 2011-02-12 2012-08-15 中兴通讯股份有限公司 Handover parameter optimization method and system
CN102364980A (en) * 2011-10-12 2012-02-29 中兴通讯股份有限公司 Method and user equipment (UE) for dynamically controlling inner-loop power
EP2683191A1 (en) * 2012-07-02 2014-01-08 Alcatel-Lucent Inter-cell interference coordination for co-channel heterogeneous networks
CN105744534A (en) * 2016-01-20 2016-07-06 任柏松 FDD-LTE different-frequency networking method based on frequency migration
CN107040940A (en) * 2016-02-03 2017-08-11 中国移动通信集团浙江有限公司 A kind of threshold regulating method and device

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
TDD-FDD混合组网互操作策略优化和研究;蒋永希;《邮电设计技术》;20161231;全文 *

Also Published As

Publication number Publication date
CN109982352A (en) 2019-07-05

Similar Documents

Publication Publication Date Title
CN109982352B (en) Pilot frequency switching method and device in TDD-LTE network
CN108990078B (en) Method, system, equipment and storage medium for optimizing downlink interference of LTE (Long term evolution) network
US8830858B2 (en) Utilizing scanned radio access technology information
US11856467B2 (en) Cell ranking in multi beam system
KR101794784B1 (en) Control method and apparatus
RU2762045C2 (en) Method and communication device
CN105472660B (en) A kind of load-balancing method, the network equipment and system
EP3142418B1 (en) User equipment, base station, cell selection control method, and wideband-all-symbols-measurement parameter transmission method
CN108235344B (en) Configuration method and device of neighbor cell suitable for eSRVCC switching
EP3512255A1 (en) User equipment, mobile communication system and cell selection method
EP3183903B1 (en) Received signal strength based interferer classification of cellular network cells
KR20150089059A (en) Device and method for configurating almost blank subframe, and heterogeneous wireless communication network
CN111368384A (en) Method and equipment for predicting antenna engineering parameters
CN104581830A (en) Access method and equipment of terminal equipment
CN110381546B (en) Cell reselection method, terminal and network equipment
CN113473507B (en) Cell optimization method, device, storage medium and electronic device
CN115412980A (en) Method, device, equipment and storage medium for adjusting cell switching boundary
CN106714231B (en) Method and device for processing unauthorized carrier measurement report
CN106559800B (en) Joint evaluation method and device for Radio Resource Management (RRM) measurement event
CN103987079A (en) Adjacent region interference determination method and device
CN113141625B (en) Method and device for determining cell coverage scene, electronic equipment and storage medium
WO2017177662A1 (en) Method and device for obtaining noise floor value of base station
CN104349349A (en) Cell parameter determining method, system and equipment
CN112839353B (en) Method and device for identifying interference in LTE (Long term evolution) system
CN105191397B (en) Base station, coordinator and method for eliminating network service hot spot

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant