CN109982401A - Switching optimization method suitable for LTE wireless signal acquiring and analysis system - Google Patents
Switching optimization method suitable for LTE wireless signal acquiring and analysis system Download PDFInfo
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- CN109982401A CN109982401A CN201910216054.4A CN201910216054A CN109982401A CN 109982401 A CN109982401 A CN 109982401A CN 201910216054 A CN201910216054 A CN 201910216054A CN 109982401 A CN109982401 A CN 109982401A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W28/00—Network traffic management; Network resource management
- H04W28/16—Central resource management; Negotiation of resources or communication parameters, e.g. negotiating bandwidth or QoS [Quality of Service]
- H04W28/26—Resource reservation
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- 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
- H04W36/0011—Control or signalling for completing the hand-off for data sessions of end-to-end connection
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- 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
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- 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
- H04W36/32—Reselection being triggered by specific parameters by location or mobility data, e.g. speed data
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Abstract
The present invention discloses a kind of switching optimization method suitable for LTE wireless signal acquiring and analysis system, its feature includes: to enter the speed threshold self study stage after LTE wireless signal acquiring and analysis system deployed with devices, switch decision using combination difference sluggishness Hys_qos LTE wireless signal acquiring and the preferential switchover policy of analysis system.The method of the present invention has comprehensively considered the mobility and service feature, the load state of LTE wireless signal acquiring and analysis system, target user's priority of user, to realize handover optimization, reduce and unnecessary switches repeatedly, handover blocking rate is reduced, the success rate of target user handset positioning is improved；And it does not influence, even improve the service quality of other users mobile phone in existing net.
Description
Technical field
The present invention relates to mobile communication technology fields, and in particular to the switching of LTE wireless signal acquiring and analysis system
Optimization method.
Background technique
With the high speed development of mobile communication technology, 2G/3G mobile phone user mostly fast transferring is 4G user, for safety
The wireless signal acquiring in field is also faced with analysis system equipment from supporting 2G/3G standard to change to the full moulded-on type upgrading of support 4G
Generation.LTE wireless signal acquiring and analysis system are divided into active and passive type two major classes, and wherein proactive system equipment needs
It works as increasing the small base station of plug and play in LTE is now netted, does not influence the regular traffic of user mobile phone in existing net, and mesh
Mark user mobile phone is then preferentially switched under LTE wireless signal acquiring and analysis system, and configuration is with necessary network communication ginseng
Several and communication process information, and relevant information is configured in up-link wireless signal collection and analysis equipment, to target user's hand
Machine is measured to LTE wireless signal acquiring and the wireless signal of analysis system equipment, thus fast implement to target user
The physical location of mobile phone is accurately positioned.Now net in other users mobile phone also can using be switched to LTE wireless signal acquiring with
Under analysis system, better signal quality and service are obtained.
Switch the mobile management function to ps domain important as one, directly affects the performance of whole system.It is wireless along with LTE
The deployment of signal collection and analysis system equipment also proposed new requirement to switching handling method, and traditional switching method is
The new feature of LTE wireless signal acquiring and Application of analysis system is not adapted to.
LTE wireless signal acquiring and analysis system are used for measurement and positioning user mobile phone position, need to allow in handoff procedure
Target user handset preferentially chooses LTE wireless signal acquiring and analysis system equipment as switching target small area, but unforced
Target user is switched under LTE wireless signal acquiring and analysis system, will not just generate in this way to other users in existing net dry
It disturbs, target user will not be alarmed.In addition, it is contemplated that the limited coverage area of LTE wireless signal acquiring and analysis system equipment,
Speed threshold should be set to optimize handoff algorithms, prevent the target user of high-speed motion in LTE wireless signal acquiring and analysis
It is quickly toggled between system and existing net.On the other hand, LTE wireless signal acquiring and the preferential handoff algorithms of analysis system,
It is easy to cause a large number of users to pour in LTE wireless signal acquiring and analysis system in advance and cause to overload, the whole of existing net is caused to be used
Family experience reduces.In view of this, it should sufficiently combine user moving speed, user performance characteristic, LTE wireless signal acquiring and divide
The surplus resources of analysis system and the priority of target user, advanced optimize handoff algorithms.
Summary of the invention
Goal of the invention: the main purpose of the present invention is to provide one kind to be suitable for LTE wireless signal acquiring and analysis system
Switching optimization method, and this method combination user moving speed, user performance characteristic, surplus resources, target user are preferential
Power, to adapt to LTE wireless signal acquiring and new demand of the analysis system equipment to hand-off process.
Technical solution: the switching optimization method of LTE wireless signal acquiring and analysis system of the present invention, including it is as follows
Step:
Step 101:LTE wireless signal acquiring and analysis system equipment initially enter speed after redeploying booting every time
In the self study stage of thresholding, being determined using residence time as reference data allows to the LTE wireless signal acquiring and analysis system
User's maximum movement speed of equipment initiation switching request；
Step 102:LTE wireless signal acquiring and analysis system device configuration handover measurement parameter, it is wireless by UE detection LTE
The reference signal receiving intensity and Reference Signal Received Quality of signal collection and analysis system, user velocity information, service condition
The speed threshold and load state of information, LTE wireless signal acquiring and analysis system；
Step 103:UE analyzes the mobility and service feature of user, specially when user moving speed be more than LTE without
When line signal collection and analysis system speed thresholding, forbid initiating switching request to the LTE wireless signal acquiring and analysis system；
When user moving speed is lower than speed threshold, in conjunction with the sluggish Hys_qos of the business QOS requirement selection differentiation of user, entrance
In next step；
Step 104:UE analysis LTE wireless signal acquiring and the reference signal receiving intensity and reference signal of analysis system connect
Quality is received, using the sluggish Hys_qos of differentiation, is preferably switchover policy with LTE wireless signal acquiring and analysis system, passes through
Trigger event reports existing net source cell；And simultaneously to existing net source cell report of user velocity information, business state information, LTE without
The speed threshold and load state of line signal collection and analysis system, into next step；
Step 105: now netting the handover measurement information that source cell is reported using UE, analysis LTE wireless signal acquiring and analysis
The disposable load situation of system, specially when the surplus resources of LTE wireless signal acquiring and analysis system meet customer service institute
It takes, initiates switching request to LTE wireless signal acquiring and analysis system；Otherwise, forbid to LTE wireless signal acquiring and analysis
System initiates switching request；LTE wireless signal acquiring and analysis system finally there are surplus resources meet user's highest business
Demand, what only now net source cell issued at this time is that the switching request side of target user is allowed, otherwise refusal switching；
Step 106: redeploying, return if LTE wireless signal acquiring is moved to new position with analysis system equipment
Step 101, the measurement reported result of step 101 gained speed threshold analysis UE is otherwise continued to use.
As can be seen from the above technical solutions, the method for the present invention has comprehensively considered user's mobility and service feature, LTE
The priority of the load state and target user of wireless signal acquiring and analysis system, to realize handover optimization.With it is existing
Technology is compared, it has the advantage that: reduce it is unnecessary switch repeatedly, reduce handover blocking rate, improve target user
The success rate of mobile phone positioning.
Detailed description of the invention
Fig. 1 is handover optimization of embodiment of the present invention flow chart；
Fig. 2 is that the step 101 of handover optimization of embodiment of the present invention flow chart disassembles schematic diagram in detail；
Fig. 3 is that the step 103 of handover optimization of embodiment of the present invention flow chart disassembles schematic diagram in detail；
Fig. 4 is that the step 104 of handover optimization of embodiment of the present invention flow chart disassembles schematic diagram in detail；
Fig. 5 is that the step 105 of handover optimization of embodiment of the present invention flow chart disassembles schematic diagram in detail.
Specific embodiment
With reference to the accompanying drawing, most preferred embodiment is described in detail, but protection scope of the present invention is not limited to institute
State embodiment.
Embodiment: a kind of switching optimization method suitable for LTE wireless signal acquiring and analysis system, Fig. 1 are this implementation
The general flow chart of example, includes the following steps:
Step 101:LTE wireless signal acquiring and analysis system equipment initially enter speed after redeploying booting every time
In the self study stage of thresholding, being determined using residence time as reference data allows to the LTE wireless signal acquiring and analysis system
User's maximum movement speed of equipment initiation switching request；
Step 102:LTE wireless signal acquiring and analysis system device configuration handover measurement parameter, it is wireless by UE detection LTE
The reference signal receiving intensity and Reference Signal Received Quality of signal collection and analysis system, user velocity information, service condition
The speed threshold and load state of information, LTE wireless signal acquiring and analysis system；
Step 103:UE analyzes the mobility and service feature of user, specially when user moving speed be more than LTE without
When line signal collection and analysis system speed thresholding, forbid initiating switching request to the LTE wireless signal acquiring and analysis system；
When user moving speed is lower than speed threshold, in conjunction with the sluggish Hys_qos of the business QOS requirement selection differentiation of user, entrance
In next step；
Step 104:UE analysis LTE wireless signal acquiring and the reference signal receiving intensity and reference signal of analysis system connect
Quality is received, using the sluggish Hys_qos of differentiation, is preferably switchover policy with LTE wireless signal acquiring and analysis system, passes through
Trigger event reports existing net source cell；And simultaneously to existing net source cell report of user velocity information, business state information, LTE without
The speed threshold and load state of line signal collection and analysis system, into next step；
Step 105: now netting the handover measurement information that source cell is reported using UE, analysis LTE wireless signal acquiring and analysis
The disposable load situation of system, specially when the surplus resources of LTE wireless signal acquiring and analysis system meet customer service institute
It takes, initiates switching request to LTE wireless signal acquiring and analysis system；Otherwise, forbid to LTE wireless signal acquiring and analysis
System initiates switching request；LTE wireless signal acquiring and analysis system finally there are surplus resources meet user's highest business
Demand, what only now net source cell issued at this time is that the switching request side of target user is allowed, otherwise refusal switching；
Step 106: redeploying, return if LTE wireless signal acquiring is moved to new position with analysis system equipment
Step 101, the measurement reported result of step 101 gained speed threshold analysis UE is otherwise continued to use.
As shown in Fig. 2, completing after step 101:LTE wireless signal acquiring and analysis system device power-up to speed threshold
Self study.Admission velocity thresholding learns the stage after powering for LTE wireless signal acquiring and analysis system equipment, is with residence time
Judgement standard (such as: residence time 10s) through study after a period of time with the determination LTE wireless signal acquiring and analysis
Speed threshold of the system equipment under application scenarios.
Step 102:UE is by periodically monitoring and collecting existing net serving cell and LTE wireless signal acquiring and analysis
Some information of system, including reference signal receiving intensity RSRP, Reference Signal Received Quality RSRQ, signal two-way time RTT,
Direction of arrival (Angle of arrival, abbreviation AoA), business QOS rank QCI, adjacent area surplus resources.
Step 103:UE estimates to obtain user and base station distance d:d=c × RTT/2 by measuring RTT, and wherein c is light
Speed.Binding signal angle of arrival AoA obtains the estimation of user location, and the change in location for comparing two measurement moment UE is obtained to user
The estimation of movement velocity.As shown in figure 3, only when user velocity is not more than the speed of LTE wireless signal acquiring and analysis system
When thresholding, just UE is allowed to initiate switching request to LTE wireless signal acquiring and analysis system.UE passes through the grade of measurement business QOS
Other QCI determines differentiation sluggishness with service resources type and service priority.Determine that Hys_qos specifically follows following principle:
GBR traffic is higher than Non-GBR business, and the business that (being all GBR or Non-GBR) priority is high when resource type is identical is high
In the low business of priority.
As shown in figure 4, whether the result of 103 handover measurement of step 104:UE comparison step meets LTE wireless signal acquiring
The condition preferentially switched with analysis system, when Mn-Hys_qos > Ms+off triggers A3 event, the A3 event is neighbor cell
It is better than serving cell；A3 event occurs to be used to determine whether UE is switched to neighbor cell, as Mn-Hys_qos > sca_first_
A4 event is triggered when threshold, the A4 event is that neighbor cell is better than absolute thresholding；Wherein Mn is that LTE wireless signal is adopted
Collection and the reference signal receiving intensity RSRP or Reference Signal Received Quality RSRQ, Ms of analysis system are that source cell reference signal connects
Receiving intensity RSRP or Reference Signal Received Quality RSRQ, off is Cell Individual Offset, sca_first_threshold be LTE without
Line signal collection and analysis System Priority handoff threshold；
If UE reports A4 event, LTE wireless signal acquiring and the preferential switch decision of analysis system are triggered；If UE is reported
A3 event is then needed by source cell signal strength or signal quality compared with necessary handoff threshold handover_threshold,
Prevent inessential switching；
Selected in the numerous candidate cells for meeting trigger condition one it is most suitable as switching target small area, when selection
Quality evaluation first is carried out to cell, then generates target cell list by trap queuing；It is connect according to the reference signal that measurement reports
Intensity RSRP and Reference Signal Received Quality RSRQ is received, using following cell quality assessment algorithm
Cell_performance:
W_rsrp+w_rsrq=1
Wherein w_rsrp, w_rsrq are respectively the weight of RSRP and RSRQ, and mea_rsrp_index is measuring reference signals
Receiving power call number, MAX_RSRP_INDEX maximum Reference Signal Received Power call number, mea_rsrq_index is measurement
Reference Signal Received Quality call number, MAX_RSRQ_INDEX are maximum Reference Signal Received Quality call numbers；It is small for assessing
The value of the Cell_value of area's value is bigger, and the quality for illustrating the candidate cell is better, it should pay the utmost attention to switch.
Step 105: the loading condition of Target cell is analyzed by comparing the surplus resources Rj of Target cell, Target cell
Surplus resources are indicated by surplus resources block:
The number of resources summation mapped in measurement period for Δ T, NΔTThe money that can be distributed in measurement period for base station
Source sum
Resource reservation policy is used to improve service switchover priority, RreservedIt is reserved resource.
It is when the surplus resources Rj of Target cell is not able to satisfy Rrequest needed for customer service, the cell is small from target
It is deleted in area's list；When target cell list is not that sky then takes new Target cell to be analyzed until discovery meets load requirement
Target cell and initiate switching request.There are meet user's highest business need always with analysis system for LTE wireless signal acquiring
The least residue resource of Rrequest_max is sought, therefore there is the highest priority of switching in all Target cells.It is only existing
When net source cell sending is the switching request of target user, LTE wireless signal acquiring just allows to switch with analysis system, otherwise
Refusal switching.
Those skilled in the art scholar will be understood that, can although specific embodiment has been described for the ease of explaining here
Various changes are made without departing from the spirit and scope of the invention.Therefore, except as by the appended claims, Bu Nengyong
In the limitation present invention.
Claims (4)
1. a kind of switching optimization method suitable for LTE wireless signal acquiring and analysis system, it is characterised in that including walking as follows
It is rapid:
Step 101:LTE wireless signal acquiring and analysis system equipment initially enter speed threshold after redeploying booting every time
The self study stage, being determined using residence time as reference data allows to the LTE wireless signal acquiring and analysis system equipment
Initiate user's maximum movement speed of switching request；
Step 102:LTE wireless signal acquiring and analysis system device configuration handover measurement parameter detect LTE wireless signal by UE
Acquisition and the reference signal receiving intensity of analysis system and Reference Signal Received Quality, user velocity information, business state information,
The speed threshold and load state of LTE wireless signal acquiring and analysis system；
Step 103:UE analyzes the mobility and service feature of user, specially when user moving speed is more than LTE wireless communication
When number acquisition is with analysis system speed threshold, forbid initiating switching request to the LTE wireless signal acquiring and analysis system；When with
Family movement speed is lower than speed threshold, and the sluggish Hys_qos of selection differentiation is required in conjunction with the business QOS of user, and entrance is next
Step；
Step 104:UE analyzes LTE wireless signal acquiring and the reference signal receiving intensity and reference signal of analysis system receive matter
Amount is preferably switchover policy with LTE wireless signal acquiring and analysis system, is passed through triggering using the sluggish Hys_qos of differentiation
Event reports existing net source cell；And simultaneously to existing net source cell report of user velocity information, business state information, LTE wireless communication
Number acquisition and the speed threshold and load state of analysis system, into next step；
Step 105: now netting the handover measurement information that source cell is reported using UE, analyze LTE wireless signal acquiring and analysis system
Disposable load situation, specially taken when the surplus resources of LTE wireless signal acquiring and analysis system meet customer service,
Switching request is initiated to LTE wireless signal acquiring and analysis system；Otherwise, forbid to LTE wireless signal acquiring and analysis system
Initiate switching request；LTE wireless signal acquiring and analysis system finally there are surplus resources meet user's highest business demand,
What only now net source cell issued at this time is that the switching request side of target user is allowed, otherwise refusal switching；
Step 106: being redeployed if LTE wireless signal acquiring is moved to new position with analysis system equipment, return step
101, otherwise continue to use the measurement reported result of step 101 gained speed threshold analysis UE.
2. the switching optimization method according to claim 1 suitable for LTE wireless signal acquiring and analysis system, feature
It is that above-mentioned steps 103 include: that UE by measuring signal two-way time RTT obtains user and base station distance d:d=c × RTT/
2, wherein c is the light velocity；Binding signal angle of arrival obtains the estimation of user location, and the change in location for comparing two measurement moment UE obtains
To the estimation to user movement speed；If user velocity is less than or equal to the speed threshold of LTE wireless signal acquiring and analysis system
When, then allow UE to initiate switching request to LTE wireless signal acquiring and analysis system；If user velocity is greater than LTE wireless signal
When acquisition and the speed threshold of analysis system, then UE is forbidden to initiate switching request to LTE wireless signal acquiring and analysis system；UE
By measuring the rank QCI of business QOS, differentiation sluggishness is determined with service resources type and service priority；Determination is specifically abided by
Follow following principle: GBR traffic is higher than Non-GBR business, and the high business of priority is higher than the low business of priority.
3. the switching optimization method according to claim 1 suitable for LTE wireless signal acquiring and analysis system, feature
It is that above-mentioned steps 104 include: whether the result of 103 handover measurement of UE comparison step meets LTE wireless signal acquiring and analysis
The condition of System Priority switching, when Mn-Hys_qos > Ms+off triggers A3 event, the A3 event is that neighbor cell is better than clothes
Business cell；A3 event occurs to be used to determine whether UE is switched to neighbor cell, as Mn-Hys_qos > sca_first_
A4 event is triggered when threshold, the A4 event is that neighbor cell is better than absolute thresholding；Wherein Mn is that LTE wireless signal is adopted
Collection and the reference signal receiving intensity RSRP or Reference Signal Received Quality RSRQ, Ms of analysis system are that source cell reference signal connects
Receiving intensity RSRP or Reference Signal Received Quality RSRQ, off is Cell Individual Offset, sca_first_threshold be LTE without
Line signal collection and analysis System Priority handoff threshold；
If UE reports A4 event, LTE wireless signal acquiring and the preferential switch decision of analysis system are triggered；If UE reports A3 thing
Part is then needed source cell signal strength or signal quality compared with necessary handoff threshold handover_threshold, is prevented
Inessential switching；
Selected in the numerous candidate cells for meeting trigger condition one it is most suitable as switching target small area, when selection, is first right
Cell carries out quality evaluation, then generates target cell list by trap queuing；It is received according to the reference signal that measurement reports strong
RSRP and Reference Signal Received Quality RSRQ is spent, using following cell quality assessment algorithm cell_performance:
W_rsrp+w_rsrq=1
Wherein w_rsrp, w_rsrq are respectively the weight of RSRP and RSRQ, and mea_rsrp_index is that measuring reference signals receive
Power call number, MAX_RSRP_INDEX maximum Reference Signal Received Power call number, mea_rsrq_index are measurement references
Signal receiving quality call number, MAX_RSRQ_INDEX are maximum Reference Signal Received Quality call numbers；For assessing cell valence
The value of the Cell_value of value is bigger, and the quality for illustrating the candidate cell is better, it should pay the utmost attention to switch.
4. the switching optimization method according to claim 1 suitable for LTE wireless signal acquiring and analysis system, feature
It is that above-mentioned steps 105 include: by comparing the loading condition of the surplus resources Rj analysis Target cell of Target cell, target is small
The surplus resources in area are indicated by surplus resources block:
Wherein nkFor in measurement period Δ T service connection k map resource,For the number of resources mapped in measurement period Δ T
Summation, NΔTThe total number resource that can be distributed in measurement period Δ T for base station；Resource reservation policy is used to improve service switchover
Priority, RreservedIt is reserved resource；
When the Rrequest needed for the surplus resources Rj of Target cell is less than customer service, by the cell from the target of step 104
It is deleted in cell list；When target cell list is not that sky then takes new Target cell to be analyzed until finding that meeting load wants
The Target cell asked simultaneously initiates switching request；There are meet user's highest business always with analysis system for LTE wireless signal acquiring
The least residue resource of demand Rrequest_max has the highest priority of switching in all Target cells；Only show net
When what source cell issued is the switching request of target user, LTE wireless signal acquiring just allows to switch with analysis system, otherwise refuses
Switching absolutely.
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Application publication date: 20190705 |