CN101001471A - Adjacent domain optimization processing method and its system - Google Patents
Adjacent domain optimization processing method and its system Download PDFInfo
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- CN101001471A CN101001471A CNA2007100027362A CN200710002736A CN101001471A CN 101001471 A CN101001471 A CN 101001471A CN A2007100027362 A CNA2007100027362 A CN A2007100027362A CN 200710002736 A CN200710002736 A CN 200710002736A CN 101001471 A CN101001471 A CN 101001471A
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Abstract
This invention discloses an optimized process method for adjacent regions including: a network side indicates a mobile station to report pilot strength measurement information based on a preset tracing condition of the mobile station and receives the information reported by the mobile station to carry out optimized process to the relation of adjacent regions. This invented system includes: an operating/stopping management unit used in managing the mobile station to report the pilot measurement strength information, an information obtaining unit for obtaining pilot strength measurement information and an optimized process unit carrying out optimized process of adjacent regions based on the strength information.
Description
Technical field
The present invention relates to wireless communication field, relate in particular to a kind of adjacent domain optimization processing method and system thereof.
Background technology
Adjacent section planning is a ring important in the wireless network planning, the purpose of planning is the adjacent sub-district that guarantees can in time switch at the travelling carriage of sub-district service boundaries signal the best, thereby guarantee the performance of calling quality and network, so the whether reasonable performance and the quality that directly has influence on network of adjacent section planning.
CDMA 1X is the self-interference system, any one user in network can be subjected to the interference of other user in the Home Network, any one travelling carriage all must overcome these interference could satisfy certain service quality, if because of away from the Serving cell signal weakening, can not in time switch to best server cell, then base station and travelling carriage all need to strengthen transmitting power and overcome the interference that other sub-district produces its, to satisfy quality of service requirement.When power is increased to maximum, still can't satisfy service quality, call drop just takes place; Simultaneously, increase in the process of transmitting power at single mobile station, make the interference of whole net increase, network performance descends.Therefore, good adjacent section planning is the basic demand that guarantees the CDMA1X network performance.
For the adjacent area is optimized, prior art provides following several solutions.
Existing scheme one: at the network planning initial stage, generate Neighboring Cell List by the radio transmission prediction, follow-up again through to the drive test on the spot of existing network and be aided with artificial judgment and the mode of configuration is finished neighbor cell configuration.
Adopt this adjacent area optimal way, have following shortcoming:
1, the data that obtain on the spot are adjacent area pilot frequency intensity, time delay and the travelling carriage handover informations in certain time, certain place.The workload that these information are carried out statistical analysis and data processing greatly and comparatively complicated.And because drive test can not travel through all overlay areas and all service time on the spot, sampled data is imperfect, does not have statistical significance, therefore can not provide suggestion accurately to priority of adjacent domain.
2, since propagation model and practical radio communication environment there are differences, the Neighbor Set of travelling carriage has the number restriction, human configuration causes the adjacent area leakage to join or redundant configuration easily, or the priority of adjacent domain of configuration is incorrect, and its consequence is: neighbor cell configuration has omission can cause the travelling carriage call drop; If dispose many redundant pilot tones, travelling carriage is spent the too much time in the search to these redundant pilot tones, the search time that one side can increase travelling carriage, reduce search speed, on the other hand, if the priority of real effective pilot tone is lower, might this pilot tone not be selected in the Neighboring Cell List of merging, though but it is lower perhaps to be handed down to travelling carriage priority, at this moment may travelling carriage also do not have enough time to search out it, travelling carriage is with regard to because the interference of this pilot tone and call drop.
Existing scheme two: the adjacent area is leaked and is joined identification and automatic adding technique.Exist in the PSMM message that this technology reports travelling carriage (Pilot Strength Measurement Message, Pilot Strength Measurement Message) but the cell identification in system's neighboring BS relationship is not come out, and add in the Neighboring Cell List automatically.
Adjacent area number in the Neighboring Cell List is restricted, may cause the possibility that can not add or cover original adjacent area when the adjacent area number reaches maximum.The adjacent area leak join identification and automatically adding technique can only find that a leakage joins the sub-district and add one, the data that do not have statistical significance, can not distinguish priority of adjacent domain with clear and definite each sub-district, and leak for wall scroll and to join record and whether just can directly the sub-district be added to the adjacent area, many times also need artificial the participation to judge, when the network complexity, when customer volume is big, join information for the leakage of magnanimity and can cause very big later stage work amount and the higher rate that mismatches equally.
Existing scheme three: switch data is carried out statistic of classification, the Neighboring Cell List priority switched etc. is reconfigured and revises according to switching the number of times that takes place.
This scheme can only be added up the switching that has taken place and be provided the configuration suggestion again, can not discern and provide suggestion for incorrect configuring conditions such as neighboring BS relationship omissions.
Summary of the invention
The embodiment of the invention provides a kind of adjacent domain optimization processing method, in order to realize automatically, exactly the adjacent area to be optimized processing, has improved the accuracy of neighbor cell configuration, and has reduced the realization cost.
The embodiment of the invention also provides a kind of adjacent area optimization process system.
The adjacent domain optimization processing method that the embodiment of the invention provides may further comprise the steps:
Network side reports pilot strength measurement message according to default travelling carriage tracking condition indication travelling carriage; And receive the pilot strength measurement message that described travelling carriage reports; Network side is optimized processing according to the described pilot strength measurement message that receives to neighboring BS relationship.
Described default travelling carriage tracking condition in the embodiment of the invention comprises the combination in any of one of following condition or following condition:
Tracking time, default value are the longest tracking time that system can support;
Follow the tracks of number of users, default value is that the maximum that system can support is followed the tracks of number of users;
Mobile station identification;
Cell ID and quantity;
Frequency sign and quantity;
The pilot frequency intensity thresholding.
The adjacent area optimization process system that the embodiment of the invention provides comprises: administrative unit, optimization process unit and information acquisition unit;
Described administrative unit is used for sending enabled instruction to described information acquisition unit, wherein carries default travelling carriage tracking condition;
Described information acquisition unit is used to receive the enabled instruction of described administrative unit, and according to the described travelling carriage tracking condition that described enabled instruction is carried, obtains the pilot strength measurement message that travelling carriage reports;
Described optimization process unit is used for according to the described pilot strength measurement message that described information acquisition unit gets access to neighboring BS relationship being optimized processing.
The beneficial effect of the embodiment of the invention:
Network side in the embodiment of the invention is gathered pilot strength measurement message according to default travelling carriage tracking condition indication travelling carriage, making the pilot strength measurement message as the optimization process reference data is to come out according to statistical computation after system synthesis access user's the testing result, the truth that has reflected the whole system operation is so have higher accuracy, reliability and comprehensive more in the past than the neighbor cell configuration that went out according to geographical location estimation; Simultaneously, finish automatically by network side with optimization adjacent area process, reduced specification requirement, saved human cost the field engineer owing to gather the pilot strength measurement message process.
Description of drawings
Fig. 1 is the adjacent area optimization process schematic diagram of the embodiment of the invention;
Fig. 2 is the acquisition tasks implementation schematic diagram of the embodiment of the invention;
Fig. 3 is the adjacent area optimization tool handling process schematic diagram in the embodiment of the invention;
The structural representation of the adjacent area optimization process system that Fig. 4 provides for the embodiment of the invention.
Embodiment
At CDMA (Code Division Multiple Access, code division multiple access) in the system, for MS (Mobile Station, travelling carriage), in calling out the maintenance process, the signal strength signal intensity of measuring Forward Pilot Channel almost is continuous process, every 26.66ms just measures the signal strength signal intensity of a Forward Pilot Channel, and can use the PSMM message cycle to BSC (Base Station Controller, base station controller) report its measurement situation, this message comprises to the content that BSC reports:
The PN biasing (offeset) of Active Set reference pilot;
The pilot frequency intensity of Active Set reference pilot (Ec/Io);
The maintenance of Active Set reference pilot (keep) sign;
The power that MS receives;
The pilot phase of Active Set and Candidate Set pilot tone (Phase);
The pilot frequency intensity of Active Set and Candidate Set pilot tone (Ec/Io);
The maintenance of Active Set and Candidate Set pilot tone (keep) sign.
The embodiment of the invention is exactly to utilize in the PSMM message that MS reports entrained above information to carry out the adjacent area optimization process as the reference data.
Describe the present invention below in conjunction with embodiment and accompanying drawing.
Referring to Fig. 1, be the adjacent area optimization process schematic diagram of the embodiment of the invention.Wherein BSC is responsible for the PSMM message that collection and store M S report as the foreground; BAM (Backend AdministrationModule, rear end administration module) is responsible for the management (as starting and stopping) of acquisition tasks as the backstage; In addition, also have the adjacent area optimization tool on the backstage, be responsible for the adjacent area optimization process; This process can be divided into 4 stages:
Phase I: start the task of gathering PSMM message.
Have the acquisition tasks management system on the BAM, can set in advance acquisition tasks in task management system, and the tracking condition of travelling carriage is set in acquisition tasks, tracking condition can comprise:
Tracking time, the i.e. time that this acquisition tasks continued; Default value is the longest tracking time that system can support when carrying out the whole network tracking;
The maximum number of users of following the tracks of, default value are that the maximum that system can support when carrying out the whole network tracking is followed the tracks of number of users;
Mobile station identification is specified the target of following the tracks of by mobile station identification is set;
The sign of sub-district and quantity are specified the geographic range of following the tracks of by cell ID and quantity are set;
Frequency sign and quantity are specified the scope of resource of following the tracks of by frequency sign and quantity are set;
The pilot frequency intensity thresholding is specified the scope of following the tracks of pilot frequency intensity by the pilot frequency intensity thresholding is set.
Above condition can independently be used also and can be used in combination.If do not specify tracking condition, then carry out the whole network and follow the tracks of by system.For guaranteeing that certain statistical law takes into account the disposal ability of system simultaneously, the default setting of system can limit maximum number of user and the longest tracking time that the whole network is followed the tracks of, and for example: the maximum while can be followed the tracks of 1000 users, the longest tracking one month.
Acquisition tasks is started by the system manager on BAM, and BAM notice BSC prepares to carry out acquisition tasks.The Service Processing Module of BSC is opened up the ephemeral data buffer area, is used for the information that storage of collected arrives.
The BSC system also is provided with a Flow Control thresholding, as threshold value, is used for the carrying out according to the load condition control acquisition tasks of CPU with cpu load.Because BSC system acquisition PSMM message, processing load and interface-free resources that the system that can take is certain, therefore unaffected for the basic service function of safeguards system, when BSC system CPU load surpasses the Flow Control thresholding, interrupt acquisition tasks, when cpu load is lower than the Flow Control thresholding, recover the execution of acquisition tasks.
Second stage: carry out the task of gathering PSMM message.
Referring to Fig. 2, be the acquisition tasks implementation schematic diagram of the embodiment of the invention, detailed process comprises:
When calling out access BSC system, the BSC system judges at first whether this calling satisfies tracking condition, if do not specify in the tracking condition and follow the tracks of number of users, whether the number of users that also will judge tracking reaches the maximum tracking number of users that system supports, have only the calling of access to satisfy tracking condition and do not reach maximum as yet when following the tracks of number of users, BSC just follows the tracks of this calling;
After call setup was finished, BSC issued PPMRO message (Periodic PilotMeasurement Request Order, the pilot measurement instruction in cycle) and notifies the MS that satisfies tracking condition periodically to report PSMM message by eating dishes without rice or wine;
After BSC receives the PSMM message that MS reports, use the data configuration information of preserving in the database and special algorithm (for example adjacent area PN recognizer etc.) at first the PN information translation in the PSMM message to be cell ID (positional information), also to add current time, call identification (IMSI), preceding reverse link circuit quality information (being frame error rate) etc., then this PSMM message be deposited in the buffer area of opening up in advance at message header;
Treat that the completely back BSC unification of buffer area is sent to BAM with data.BAM (backstage) accepts the reference data that is used to optimize the adjacent area that BSC Service Processing Module (foreground) reports, and it is saved in the BAM database with document form, and then, BSC empties buffer area and continues data cached.Service Processing Module (foreground) that the opening up of BSC buffer area improved BSC and the bandwidth availability ratio between BAM (backstage) have reduced the overhead of Service Processing Module on image data.
In the process of above-mentioned collection PSMM message, BSC controls the carrying out of acquisition tasks automatically according to the Flow Control thresholding.When the cpu load of BSC system reached default Flow Control thresholding, acquisition tasks was interrupted automatically; When cpu load returns to the Flow Control thresholding when following, acquisition tasks is recovered automatically again.
Phase III: the task of stopping to gather PSMM message.
Acquisition tasks can stop in the following manner:
1, specified tracking time by the system manager when acquisition tasks when starting, then when tracking time arrived, BSC stopped to gather by the BAM notice, and the BSC instruct MS stops to report PSMM message.
2, do not specified tracking time by the system manager when acquisition tasks is starting, then when arriving the longest tracking time of system default, stop collection by BAM notice BSC, the BSC instruct MS stops to report PSMM message.
3, the term of execution of acquisition tasks, send the instruction that stops to gather by the system manager by the acquisition tasks management system on the BAM, BSC stops to gather by the BAM notice, and the BSC instruct MS stops to report PSMM message.
Quadravalence section: carry out the adjacent area optimization process according to the PSMM message that collects.
After acquisition tasks finishes, by the adjacent area optimization tool BAM is gone up the adjacent area data of preserving and extract, add up, analyze and provide the optimization suggestion and generate new neighbor cell configuration file script, send to BAM then; BAM is issued to BSC with new neighbor cell configuration file script; After BSC upgraded local neighboring BS relationship, the neighboring BS relationship after will upgrading again was issued to MS.
Referring to Fig. 3, be the adjacent area optimization tool handling process schematic diagram in the embodiment of the invention, concrete steps comprise:
S301, optimize data (PSMM data file) to the adjacent area optimization tool, for example import the PSMM data file of certain time scope from the adjacent area that the BAM database import to need is analyzed;
Object is optimized in S302, selection adjacent area, for example specifies certain each department and specifies certain carrier frequency as analytic target;
S303, selection adjacent area optimized Algorithm;
S304, utilize optimized Algorithm that the PSMM data file is analyzed and adjudicated;
S305, court verdict provide normal adjacent area, miss-configured neighboring cells, unnecessary adjacent area and need adjacent area of adjusting priority or the like; Upgrade neighboring BS relationship according to court verdict then, for example, increase miss-configured neighboring cells, deletion redundant configuration, adjust priority of adjacent domain or the like;
S306, generate new neighbor cell configuration file script according to the neighboring BS relationship after upgrading.
Through above-mentioned optimization process, the calling radio link quality information that PSMM information that the adjacent area optimization tool reports MS and BSC add when gathering PSMM message therein is converted to the adjacent cell relation information of appointed object.
In addition, according to different data qualifications and optimized Algorithm, also can obtain following information:
The adjacent area takies the ordering situation of efficient;
With time delay One Way Delay information analysis Neighbor Set PN PHASE DISTRIBUTION situation;
Play up figure according to the pilot pollution distribution geography that positional information generates;
Play up figure according to the frame error rate difference cloth geography that positional information generates;
Other is as geographical distribution situation of call drop, access failure or the like.
For example, generating according to the PSMM data in the process of adjacent cell relation information, the corresponding relation of raw information in the PSMM message and the final adjacent cell relation information that obtains can for:
PN biasing (offset) and reference data configuration information according to reference pilot obtain the reference cell sign, calculate neighbor cell sign and the time delay information of obtaining according to the PN phase place (phase) and the process PN identification of pilot tone; Handle according to reference cell sign, neighbor cell sign and time delay information and through the adjacent area optimization tool, obtain the positional information of location of mobile station information, center pilot tone and adjacent pilot frequencies, and time delay information;
According to the call identification (IMSI) and the preceding reverse frame error rate of adding, reverse link circuit quality information before obtaining to call out;
Keep sign according to pilot frequency intensity and pilot tone obtains priority of adjacent domain, switching state, and pilot pollution situation information or the like.
It is pointed out that the quadravalence section also can be carried out in the adjacent area optimization process that the foregoing description provides before the phase III.For example, when the tracking time of acquisition tasks is set to 30 days, can waits until after 30 days acquisition tasks finish and just carry out the adjacent area optimization process, but carry out an adjacent area optimization process in per 10 days.
Based on identical technical conceive, the embodiment of the invention also provides a kind of adjacent area optimization process system.
Referring to Fig. 4, the adjacent area optimization process system configuration schematic diagram that provides for the embodiment of the invention.This system comprises administrative unit, optimization process unit and information acquisition unit, wherein
Administrative unit is used for sending enabled instruction to information acquisition unit, comprises default travelling carriage tracking condition in the enabled instruction;
Information acquisition unit is used for the enabled instruction that the receiving management unit sends, and according to the travelling carriage that carries in the enabled instruction according to condition, the notice travelling carriage reports pilot strength measurement message, and the pilot strength measurement message that reports of receiving mobile;
The optimization process unit is used for according to the pilot strength measurement message that information acquisition unit gets access to neighboring BS relationship being optimized processing.
Administrative unit comprises that enabled instruction sends subelement, condition setting subelement, can also comprise that regularly subelement and/or halt instruction send subelement; The information acquisition module comprises and obtains subelement, buffer memory subelement and thresholding control sub unit.
Below in conjunction with Fig. 4 the process that adjacent area optimization process system carries out the adjacent area optimization process is described.
Administrative unit starts acquisition tasks, and sends enabled instruction by enabled instruction transmission subelement to information acquisition unit, wherein carries the travelling carriage tracking condition; The travelling carriage tracking condition notice that subelement carries according to this instruction and this instruction of obtaining in the information acquisition unit inserts reporting of user PSMM message.Administrative unit can be specified the tracking condition of travelling carriage by the condition setting subelement, and offers enabled instruction transmission subelement; Enabled instruction transmission subelement sends to the tracking condition information that is provided with by enabled instruction and obtains subelement; Obtain subelement and insert reporting of user PSMM message according to this tracking condition notice.Tracking condition comprises the maximum tracking number of users in the network-wide basis, also can comprise mobile station identification, cell ID and quantity, frequency sign and quantity, and the pilot frequency intensity thresholding.
Obtain subelement to the PPMRO message that inserts reporting of user in the information acquisition unit, indication inserts reporting of user PSMM message.After obtaining subelement and receiving PSMM message, with the PN information translation in the PSMM message is cell ID, so that provide positional information for optimization result in the optimization process plays up map generalization, also can add current time, call identification (IMSI), preceding reverse link circuit quality information (being frame error rate) etc., so that enrich optimization process information at message header; Then with the PPSM message buffering that collects to the buffer memory subelement.After the memory space of buffer memory subelement is expired, the PSMM message of wherein storing is sent to the optimization process unit store.
In obtaining subelement collection PSMM message process, the thresholding control sub unit is monitored the cpu load of information acquisition unit constantly, when the cpu load of information acquisition unit reached the default Flow Control thresholding of thresholding control sub unit, the thresholding control sub unit interrupted obtaining the operation that subelement is gathered PSMM message; When cpu load is returned to the Flow Control thresholding when following, the thresholding control sub unit recovers to obtain the operation that subelement is gathered PSMM message.
The optimization process unit is optimized processing according to the PSMM data of storage to neighboring BS relationship.The optimization process unit extracts, adds up, analyzes and provide the PSMM data to optimize by the adjacent area optimization tool and advises, and generate new neighbor cell configuration file script, and with this script transmission to BSC (foreground), after BSC upgraded local neighboring BS relationship, the neighboring BS relationship after will upgrading again was issued to MS.
Timer subelement in the administrative unit sends in enabled instruction and is triggered when subelement sends enabled instruction, carries out timing in order to information acquisition unit is gathered PSMM information.When the duration of acquisition tasks arrived the fixed time, timer subelement indication information acquiring unit stopped to obtain access reporting of user PSMM message, to arrive the purpose of automatic end acquisition tasks.In the acquisition tasks implementation, halt instruction in the administrative unit sends the halt instruction that subelement also can receive input, and stop to obtain according to this halt instruction indication information acquiring unit and insert reporting of user PSMM message, to reach the purpose that finishes acquisition tasks by manual intervention.
In sum, the embodiment of the invention is by starting acquisition tasks, make BSC gather network-wide basis automatically, or the PSMM message of all access reporting of user of the fixed time scope in the network-wide basis, appointment geographic range or appointment pilot frequency intensity scope, and with it as the reference information that carries out the adjacent area optimization process, to the adjacent area optimization process of whole network, thereby can improve the accuracy and the reliability of distributing rationally the adjacent area, thereby can solve in the past because miss-configured neighboring cells cause the problem of call drop; Simultaneously, because BSC gathers PSMM message automatically according to acquisition tasks, and the optimization process instrument analyzes the PSMM data that collect automatically and carries out the adjacent area and optimize, and reduced workload.In addition, the embodiment of the invention provides radio environment information such as timestamp, call identification in the PSMM dateout, BAM is presented at these wireless environment index ground physics and chemistry on the electronic chart by location algorithm, thereby realize automatic network coverage quality evaluation, for network coverage optimization (as: antenna adjustment, the new siting of station etc.) provides reliable basis.
Obviously, those skilled in the art can carry out various changes and modification to the present invention and not break away from the spirit and scope of the present invention.Like this, if of the present invention these are revised and modification belongs within the scope of claim of the present invention and equivalent technologies thereof, then the present invention also is intended to comprise these changes and modification interior.
Claims (14)
1, a kind of adjacent domain optimization processing method is characterized in that, may further comprise the steps:
Network side reports pilot strength measurement message according to default travelling carriage tracking condition indication travelling carriage; And receive the pilot strength measurement message that described travelling carriage reports;
Network side is optimized processing according to the described pilot strength measurement message that receives to neighboring BS relationship.
2, the method for claim 1 is characterized in that, described default travelling carriage tracking condition comprises the combination in any of one of following condition or following condition:
Tracking time, default value are the longest tracking time that system can support;
Follow the tracks of number of users, default value is that the maximum that system can support is followed the tracks of number of users;
Mobile station identification;
Cell ID and quantity;
Frequency sign and quantity;
The pilot frequency intensity thresholding.
3, the method for claim 1 is characterized in that, network side starts timer when the described travelling carriage of indication reports pilot strength measurement message, and when timer arrives the fixed time, indicates described travelling carriage to stop to report pilot strength measurement message.
4, the method for claim 1 is characterized in that, reports in the process of described pilot strength measurement message at described travelling carriage, and network side indicates described travelling carriage to stop to report pilot strength measurement message according to the halt instruction of input.
5, the method for claim 1 is characterized in that, described pilot strength measurement message comprises PN information; After network side receives described pilot strength measurement message, be cell ID with the PN information translation in the described pilot strength measurement message;
When network side is optimized processing to neighboring BS relationship, obtain the positional information of travelling carriage according to described cell ID.
6, the method for claim 1 is characterized in that network side is provided with buffer area; The described pilot strength measurement message that network side will receive stores in the described buffer area;
After described buffer area was full, network side stored the pilot strength measurement message of storing in the described buffer area in the database into, and emptied the described pilot strength measurement message of described buffer area continuation reception.
7, the method for claim 1 is characterized in that, network side is provided with the Flow Control thresholding;
When the live load of network side reaches described Flow Control thresholding, interrupt receiving described pilot strength measurement message; When the live load of network side is returned to described Flow Control thresholding when following, recover to receive described pilot strength measurement message.
8, the method for claim 1 is characterized in that network side is optimized processing to neighboring BS relationship, comprises one of following content at least:
Increase miss-configured neighboring cells;
Delete redundant adjacent area;
Adjust priority of adjacent domain.
9, a kind of adjacent area optimization process system is characterized in that, comprises administrative unit, optimization process unit and information acquisition unit;
Described administrative unit is used for sending enabled instruction to described information acquisition unit, wherein carries default travelling carriage tracking condition;
Described information acquisition unit is used to receive the enabled instruction of described administrative unit, and according to the described travelling carriage tracking condition that described enabled instruction is carried, obtains the pilot strength measurement message that travelling carriage reports;
Described optimization process unit is used for according to the described pilot strength measurement message that described information acquisition unit gets access to neighboring BS relationship being optimized processing.
10, system as claimed in claim 9 is characterized in that, described administrative unit comprises that enabled instruction sends subelement and condition setting subelement, wherein
The condition setting subelement is used for default travelling carriage tracking condition, and the described condition that will preset sends to described enabled instruction transmission subelement;
Enabled instruction sends subelement, is used to send enabled instruction, carries described travelling carriage tracking condition.
11, system as claimed in claim 10 is characterized in that, described administrative unit also comprises:
Halt instruction sends subelement, is used to receive the halt instruction of input, and indicates described information acquisition unit to stop to obtain the pilot strength measurement message that travelling carriage reports according to described halt instruction.
12, as claim 10 or 11 described systems, it is characterized in that described administrative unit also comprises:
The timer subelement is used for picking up counting when described startup indication subelement sends described enabled instruction, and when reaching the fixed time, indicates described information acquisition unit to stop to obtain the pilot strength measurement message that travelling carriage reports.
13, system as claimed in claim 9 is characterized in that, described information acquisition unit comprises:
Obtain subelement, be used to obtain the pilot strength measurement message that described travelling carriage reports;
The buffer memory subelement is used for that buffer memory is described to obtain the pilot strength measurement message that subelement gets access to, and after described buffer memory subelement memory space is full, and the described pilot strength measurement message of wherein storage is sent to described optimization process unit.
14, system as claimed in claim 13 is characterized in that, described information acquisition unit also comprises:
The thresholding control sub unit is used for according to default Flow Control thresholding, when the live load of described information acquisition unit reaches described Flow Control thresholding, interrupts the described operation that subelement obtains described pilot strength measurement message of obtaining; When the live load of described information acquisition unit is returned to described Flow Control thresholding when following, recover the described operation that subelement obtains described pilot strength measurement message of obtaining.
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