CN101969662A - Method and system for measuring and reporting random access channel optimization by terminal - Google Patents
Method and system for measuring and reporting random access channel optimization by terminal Download PDFInfo
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Abstract
The invention discloses a method for measuring and reporting random access channel optimization by a terminal. The method comprises the following step that user equipment (UE) serving as the terminal reports a measurement report to a network element on the network side after the random access channel (RACH) is measured, wherein the measurement report comprises related information generated during successful accessing of RACH and/or related information generated during unsuccessful accessing of the RACH. The invention also discloses a system for measuring and reporting the random access channel optimization by the terminal. In the system, a measurement report unit is used for measuring the RACH; and the UE reports the measurement report to the network element on the network side, wherein the measurement report comprises related information generated during successful accessing of RACH and/or related information generated during unsuccessful accessing of the RACH. By using the method and the system of the invention, the measurement report of the UE ensures that the network side acquires the complete related information of the RACH process.
Description
Technical field
The present invention relates to the communications field, relate in particular to a kind of terminal (UE) that inserts (RACH) optimization at random and measure the method and system that report.
Background technology
Long Term Evolution (LTE, Long Term Evolution) network is by the Universal Terrestrial Radio Access Network network (E-UTRAN of evolution, Evolved Universal Terrestrial Radio Access Network) and the packet-based core networks (EPC of evolution, Evolved Packet Core) forms, network presents flattening, wherein E-UTRAN is made up of the base station (eNB, Evolved NodeB) of a plurality of evolution that are connected with EPC.
In the LTE system, be in free time (IDLE) state UE or need be mutual for the UE of desynchronizing state with network side, at first need to initiate the RACH process, the RACH process can be divided into based on the RACH of competition with based on two kinds of forms of non-competing RACH, as depicted in figs. 1 and 2.UE at first will send a RACH targeting sequencing (Preamble) when preparing to initiate RACH.The prefix sequence sign indicating number that is used for RACH in each sub-district is 64, and based on competition and non-competing access way, the Preamble sign indicating number has been divided into two kinds according to above-mentioned.
Wherein,, therefore comprise the step that conflict solves, and do not have conflict, therefore do not comprise the step that conflict solves based on non-competing RACH form owing to have conflict based on the RACH form of competition.Specifically, be illustrated in figure 1 as the RACH form based on competition, this RACH process may further comprise the steps:
Step 101, UE initiate RACH prefix request message to eNB.
Step 102, eNB return RACH prefix response message and give UE.
Step 103, UE initiate the scheduled transmission request message to eNB.
Step 104, eNB return conflict and solve message to UE.
Be illustrated in figure 2 as based on non-competing R ACH form, this RACH process may further comprise the steps:
Step 201, UE initiate RACH prefix assignment request message to eNB.
Step 202, UE initiate RACH prefix request message to eNB.
Step 203, eNB return RACH prefix response message and give UE.
In the sub-district, because a certain moment has several UE and initiates above-mentioned RACH process simultaneously, therefore, conflict just may occur, cause the RACH process of UE initiation or the follow-up mutual appearance failure of UE and network side for the RACH process of using same group of Preamble sign indicating number based on competition.Finally may cause the part UE in the sub-district the bigger or access success rate reduction of call setup/time delay for switching to occur, thereby have influence on user experience.In addition, because Physical Random Access Channel (PRACH, PhysicalRandom Access Channel) channel need fixedly take the part interface-free resources of sub-district, therefore, if the improper waste that also can cause cell radio resource of PRACH configuration.Need in a period of time after the sub-district is set up, adopt the performance parameter of method collection sub-districts such as on-the-spot manual testing, thereby the corresponding configuration of manual amendment improves the performance of system and improves user experience more for this reason.Because the complexity of wireless environment, final artificial optimization's system parameters does not have time variation, and the artificial network optimization efficient that participates in is not high, and the most important thing is that this can cause great deal of labor, and this is that operator is reluctant to see.
For manual maintenance workload and the optimization network capabilities that reduces network, current at next generation mobile networks (NGMN, Next Generation Mobile Network) in the demand that tissue proposes, LTE need support self-organizing network (SON, Self Organized Network) function.Wherein, the SON function comprises the self-optimization function of RACH channel.The parameter configuration that the self-optimization function of RACH channel can come the Automatic Optimal sub-district by the self-configuring function and the self-optimization function of network comprises the configuration of RACH channel.But, the prerequisite of RACH channel optimization is the performance index that need current network, just can be followed successively by input and reach the purpose of the network optimization by certain algorithm, for this reason, an input of RACH optimizational function has been proposed through discussion in the current agreement of LTE, that is: the number of times of the RACH prefix of receiving, its definition are average based on specific PRACH configuration in the sub-district of the quantity of prefix of the RACH that receives in a period of time.
In addition, on the one hand, in order to assess the performance of RACH process,, also need measurement according to UE to report it is assessed such as inserting probability, access delay probability etc.The UE measurement of current proposition mainly contains the number of retries of RACH, the access delay of UE, the power limited indication of UE etc.Wherein, the definition of the number of retries of RACH is UE from sending for the first time Preamble to final number of retries of successfully authorizing when inserting; The definition of the access delay of UE is that UE successfully authorizes the time of using of inserting to final from sending for the first time Preamble.And, whether be that UE can be provided with a flag bit for the retry that clashes in reporting because conflict has taken place in order to distinguish certain retry.
On the other hand, because the optimization of RACH process does not require too strong real-time, so UE can keep in measurement result earlier, then after satisfying the measurement report condition, the measurement result of front is reported together, if during UE cell change has taken place, then UE need preserve the cell ID of the RACH process corresponding district of surveying.The measurement report condition is meant: successfully insert for every N time, perhaps T at set intervals, receive eNB report request after, report immediately after perhaps successfully inserting.
Yet, more than the scheme that reports of existing realization UE measurement can not accurately embody problems such as the access that occurs in the RACH process and delay because only reported: this category information of measurement result that successfully inserts the RACH process; And do not add up and report for not inserting successful RACH process.And, if UE has stored the repeatedly measurement result of RACH process, if during the sub-district adjustment of RACH parameter has taken place, then Zhi Qian measurement result is just nonsensical.Therefore, how the measurement of UE makes network side can know the more fully relevant information of RACH process if reporting, comprise relevant informations such as conflict and delay,, become the problem that presses for solution at present so that network side is optimized the RACH process based on the relevant information of comprehensive RACH process.
Summary of the invention
In view of this, the method and system that the UE measurement that main purpose of the present invention is to provide a kind of RACH to optimize reports, the measurement of UE reports the relevant information that can make network side learn comprehensive RACH process, so that network side is optimized the RACH process based on the relevant information of comprehensive RACH process.
For achieving the above object, technical scheme of the present invention is achieved in that
The method that a kind of terminal measurement that inserts optimization at random reports, this method comprises: after inserting the RACH measurement at random, the terminal UE reporting measurement reports is given the network element of network side;
Wherein, described measurement report comprises: successfully insert the relevant information that produces in the RACH process and/or successfully do not insert the relevant information that produces in the RACH process.
Wherein, this method further comprises: the relevant information that produces in the successful access RACH process that the network element of described network side reports according to described UE and/or successfully do not insert the relevant information that produces in the RACH process, the performance of assessment RACH process.
Wherein, the described relevant information that produces in the RACH process that successfully inserts comprises: current measurement result and with the corresponding temporal information of current measurement result, optional conflict number of times or optional RACH type of RACH.
Wherein, the described relevant information that produces in the RACH process that successfully do not insert comprises: RACH failure indication, optionally the Serving cell sign/with the corresponding temporal information of current measurement result, optionally the RACH frequency of failure or optional RACH type.
Wherein, the network element of described network side is received under the situation of described current measurement result and described temporal information, when described temporal information is in measurement period,, assess the performance of current RACH process according to statistics to described current measurement result and described temporal information;
The network element of described network side is received under the situation of described RACH type, is based on the RACH process of competition or based on non-competing RACH process according to the RACH type, assesses the performance of current RACH process respectively;
The network element of described network side is received and according to the statistics to described RACH failure indication, is assessed the success rate in the current RACH process under the situation of described RACH failure indication.
Wherein, this method further comprises: delete the measurement result that described UE preserves, be specially:
The configuration of the part of current service cell took place under the situation of change before UE reported, the measurement result to current service cell of being preserved before the described UE deletion change;
The time span of experience surpassed under the situation of the first assign thresholds Tvalid before UE reported, the measurement result that the described time of UE deletion before described Tvalid preserves;
The measurement number that takes place before UE reports surpasses under the situation of the second assign thresholds Nvalid, the measurement result that described UE deletion was preserved before nearest described Nvalid measurement;
UE reports the Measuring Time that takes place before under the situation of the 3rd assign thresholds Tfirst, the measurement result that the described time of UE deletion before described Tfirst preserves.
Wherein, described UE satisfies RACH measurement report condition and successfully reports after the described measurement report, the measurement result of preserving before the deletion.
Wherein, described RACH measures report condition by the UE default setting or by the network side setting.
Wherein, the described signaling of employing that reports comprises: media access control layer control signaling or special-purpose Radio Resource control control signaling.
The system that a kind of terminal measurement that inserts optimization at random reports, this system comprises: measure and report the unit, be used for RACH and measure, and the UE reporting measurement reports is given the network element of network side;
Wherein, described measurement report comprises: successfully insert the relevant information that produces in the RACH process and/or successfully do not insert the relevant information that produces in the RACH process.
Wherein, this system also comprises assessment unit, is used for the relevant information that successful access RACH process that the network element of network side reports according to UE produces and/or does not successfully insert the relevant information that produces in the RACH process, the performance of assessment RACH process.
Wherein, described assessment unit, the network element that is further used for network side is received under the situation of described current measurement result and described temporal information, when described temporal information is in measurement period, according to statistics, assess the performance of current RACH process to described current measurement result and described temporal information;
The network element of network side is received under the situation of described RACH type, is based on the RACH process of competition or based on non-competing RACH process according to the RACH type, assesses the performance of current RACH process respectively;
The network element of network side is received and according to the statistics to described RACH failure indication, is assessed the success rate in the current RACH process under the situation of described RACH failure indication.
Wherein, this system also comprises: delete cells is used for UE and reports under the situation that the part configuration of current service cell takes place to change before the measurement result to current service cell that described UE deletion is preserved before changing;
The time span of experience surpassed under the situation of the first assign thresholds Tvalid before UE reported, the measurement result that the described time of UE deletion before described Tvalid preserves;
The measurement number that takes place before UE reports surpasses under the situation of the second assign thresholds Nvalid, the measurement result that described UE deletion was preserved before nearest described Nvalid measurement;
UE reports the Measuring Time that takes place before under the situation of the 3rd assign thresholds Tfirst, the measurement result that the described time of UE deletion before described Tfirst preserves.
Wherein, described delete cells is further used for described UE and satisfies RACH measurement report condition and successfully report after the described measurement report measurement result of preserving before the deletion.
Among the present invention, after RACH measured, the UE reporting measurement reports was given the network element of network side.Wherein, measurement report comprises: successfully authorize and insert the relevant information that produces in the RACH process and/or successfully authorize the relevant information that produces in the access RACH process.
Because the measurement report that UE reports among the present invention has comprised the relevant information of comprehensive RACH process, that is: successfully mandate inserts the relevant information that produces in the RACH process and/or successfully authorizes and insert the relevant information that produces in the RACH process, therefore, adopt the present invention, can help network side to collect more accurately the comprehensively relevant information of RACH process, optimize output thereby can help RACH optimizational function entity to make more accurately.
Description of drawings
Fig. 1 is the realization flow schematic diagram based on the RACH process of competition;
Fig. 2 is the realization flow schematic diagram based on non-competing RACH process;
Fig. 3 reports the realization flow schematic diagram of process for UE RACH measurement.
Embodiment
Basic thought of the present invention is: after RACH measured, the UE reporting measurement reports was given the network element of network side.Wherein, measurement report comprises: successfully authorize and insert the relevant information that produces in the RACH process and/or successfully authorize the relevant information that produces in the access RACH process.
Be described in further detail below in conjunction with the enforcement of accompanying drawing technical scheme.
The method that the UE measurement that a kind of RACH optimizes reports, this method comprises: after RACH measured, the UE reporting measurement reports was given the network element of network side.Wherein, measurement report comprises: successfully authorize and insert the relevant information that produces in the RACH process and/or successfully authorize the relevant information that produces in the access RACH process.Wherein, the network element of network side comprises eNB.
Here, after the UE reporting measurement reports, this method further comprises: the successful mandate that the network element of network side reports according to UE inserts the relevant information that produces in the RACH process and/or does not successfully authorize and insert the relevant information that produces in the RACH process, the performance of assessment RACH process.
Wherein, at successfully authorize inserting the relevant information that produces in the RACH process, successfully authorizing and inserting the relevant information that produces in the RACH process and comprise: current measurement result and with the corresponding temporal information of current measurement result, optional conflict number of times or optional RACH type of RACH.That is to say, current measurement result and with the corresponding temporal information of current measurement result be the information that must report, and other information in addition can be selected to report.
Comprise at successfully authorize not inserting the relevant information that produces in the RACH process: RACH failure indication, optionally the Serving cell sign/with the corresponding temporal information of current measurement result, optionally the RACH frequency of failure or optional RACH type.That is to say that RACH failure indication is the information that must report, and other information in addition can be selected to report.
Here the performance index that it is pointed out that the network element assessment RACH process of network side can adopt different ways, below set forth respectively.
First kind of situation: the network element of network side receive current measurement result and with the situation of the corresponding temporal information of current measurement result under, when the time, information was in measurement period, according to current measurement result and with the statistics of the corresponding temporal information of current measurement result, assess the performance in the current RACH process, such as inserting probability and access delay probability, whether need to optimize to adjudicate current RACH configuration.At this moment, the performance index of assessment RACH process can comprise: insert probability and access delay probability or other performance index.If performance index do not meet the expectation, then need to adjust RACH and be configured to optimize the RACH process.The RACH configuration comprises: PRACH configuration, RACH access lead configuration information, RACH power control parameters or the like.
Second kind of situation: the network element of network side has received under the situation of RACH type that the network element of network side can promptly be added up above-mentioned RACH performance index respectively based on the RACH process of competition or based on non-competing RACH process according to the type of RACH.
The third situation: whether the network element of network side is received and according to the statistics to RACH failure indication, assesses the success rate in the current RACH process under the situation of RACH failure indication need to optimize to adjudicate current RACH configuration.Here, current RACH process comprises the one section RACH process that inserts and successfully authorize access of successfully authorizing, and at this moment, the performance index of assessment RACH process comprise: the success rate in the current RACH process.
With regard to the success rate in the current RACH process, network side is after receiving the reporting of a large amount of UE, can measure according to failure and successful RACH, assess the success rate in the current RACH process, promptly be evaluated at the RACH that success is initiated in the current service cell and account for the probability of the RACH of initiation altogether, its computing formula can adopt: SP=Nsuccess/Ntotal.Wherein, SP represents the success rate in the current RACH process; Nsuccess is meant that the RACH that successfully initiates crosses number of passes; Ntotal is meant the number of times of the RACH that initiates altogether.
The performance index of this RACH process of assessment SP, its effect is: if SP be lower than an assign thresholds such as 95% or other, think that then current RACH performance does not satisfy the demands, need to revise the RACH configuration parameter, such as the leading configuration information of configuration, RACH of revising PR ACH, RACH power control parameters etc.Wherein, this specified threshold can be by moving, manage and safeguard (OAM, Operation AdministrationMaintenance) configuration.
Here, this method further comprises: the process of the measurement result that deletion UE preserves.With regard to measurement result, preserved a large amount of measurement results in the UE side, what comprise in the measurement report that reports may be a part of content in the measurement result.The process of the measurement result that deletion UE preserves comprises following several situation:
The configuration of the part of current service cell took place under the situation of change before UE reported, the measurement result to current service cell of being preserved before the UE deletion change.The part configuration of described current service cell, can be the RACH configuration, also can be other cell configuration that part can influence random access procedure, such as the down transmitting power configuration of sub-district, the configuration of the antenna tilt of sub-district, perhaps the switching threshold configuration of sub-district etc.
The time span of experience surpassed under the situation of the first assign thresholds Tvalid before UE reported, the measurement within UE only is kept between the nearest Tvalid, the measurement result that the time of deletion before Tvalid preserves.
The measurement number that takes place before UE reports surpasses under the situation of the second assign thresholds Nvalid, and UE only preserves nearest Nvalid time measurement result, the measurement result that deletion was preserved before measuring for Nvalid time recently.
The time of the measurement that takes place before UE reports, under the situation the 3rd threshold value Tfirst after, UE did not delete the measurement result of being preserved before time point Tfirst.
Further, after UE satisfies RACH measurement report condition and successful reporting measurement reports, need deletion these measurement results of preservation before.
Here, RACH measures report condition by the UE default setting or by the network side setting.
Here, report the signaling of employing to comprise: medium access control (MAC) layer control signaling or special-purpose Radio Resource control (RRC) control signaling.
In sum, the present invention mainly comprises: in measurement report, and the RACH relevant information when UE inserts except measurement reports UE successfully to authorize; For the RACH process of access failure, also need to report the RACH relevant information of the final access failure of UE.In addition, in order to allow network side know the validity of measurement, the temporal information that needs the UE reporting measurement to take place, the measurement result before perhaps whether UE reports according to the configuration change decision of current service cell.The every information that comprises in the measurement report as shown in the following Table 1, table 1 is the measuring amount signal table of UE RACH in measuring.
Table 1
Method embodiment:
As shown in Figure 3, this method embodiment may further comprise the steps:
At above method embodiment, the measurement report that different RACH processes report is different, and final assessment and judgement are also different, below divides the different RACH scenes of three examples to set forth.
Example one: successfully insert the RACH process, promptly final UE successfully is authorized to be linked into the scene of network.
At first, UE measures the RACH process that success inserts, and waits until to satisfy and measures report condition and report if UE need store this measurement report, and wherein, measurement report comprises: this measures time information corresponding, shown in above table 1.And, on measuring, give the correct time and report network side with measurement result with current measurement result time information corresponding.
Then, after network side is received the measurement report of UE, include measurement report the performance statistics of RACH in, when the temporal information in the measurement report not within measurement period, can when statistics, it be got rid of; When the temporal information in the measurement report within measurement period, network side is by the performance during the current RACH of the statistical estimation of measurement report is inserted, such as inserting probability and access delay probability etc.
Here,, then need to adjust the RACH configuration, comprise configuration informations such as PRACH configuration, RACH access lead configuration information, RACH power control parameters according to statistics if current RACH performance does not meet the expectation.Such as, if the access delay probability of RACH is bigger, then may need to revise power control parameters or PRACH configuration among the RACH.
Optionally, cause because of conflict has taken place, in the metrical information that UE reports, can comprise UE because the number of retries that causes of conflict, the number of times that conflicts of RACH shown in the promptly above table 1 for the how many times retry is arranged in the retry of distinguishing UE.Network side can be lost probability according to the conflict detection of number of times statistics RACH of RACH, thereby whether the configuration of judging current RACH needs to optimize.
Further, for the RACH that distinguishes the UE use belongs to non-competing based on also being based on of competition, the RACH type that in the measurement report that UE reports, can also comprise this RACH process, shown in above table 1, by the RACH type, network side can know that current RACH belongs to based on the RACH process of competition, also is based on non-competing RACH process, when the performance that follow-up statistical estimation RACH inserts, can add up respectively.
Example two: successfully do not insert the RACH process, promptly final UE is not successfully authorized the scene that is linked into network.
At first, UE initiates the RACH process, but has failed, and then UE can write down corresponding RACH failure information, and reports network side in the measurement report satisfying to be encapsulated into when measuring report condition.The RACH failure information comprises RACH failure indication, shown in above table 1.
Then, network side can be measured according to failure and successful RACH after receiving the reporting of a large amount of UE, and the success rate SP of assessment RACH promptly is evaluated at the RACH that success is initiated in the current service cell and accounts for the probability of the RACH of initiation altogether.Such as: SP=Nsuccess/Ntotal, wherein Nsuccess is meant that the RACH that successfully initiates crosses number of passes; Ntotal is meant the number of times of the RACH that initiates altogether.
Here, if SP is lower than an assign thresholds such as 95%, think that then current RACH performance does not satisfy the demands, need to revise the RACH configuration parameter, the RACH configuration parameter comprises PRACH configuration, the leading configuration information of RACH, RACH power control parameters etc.Wherein, assign thresholds can be the OAM configuration.
Optionally, distinguish each sub-district and time validity of measuring for network side, failure information also can comprise: the Serving cell sign of generation RACH failure or this are measured time information corresponding.
It is pointed out that in example one and the example two to relate to the measurement time information corresponding, can be the form of this absolute time of date Hour Minute Second; Also can be with respect on the call time form of this relative time of time span of experience.
Further, the measurement time information corresponding that relates in example one and example two can be that UE sends the leading time of RACH for the first time in this RACH process, also can be that UE thinks the time that this RACH process finishes.
Further, in the measurement report in example one and example two, for the RACH that distinguishes the UE use belongs to non-competing based on also being based on of competition, the RACH type that in the measurement report that UE reports, can also comprise this RACH process, promptly be to belong to also to be based on non-competing RACH process based on competition, network side can be added up respectively when the performance that follow-up statistical estimation RACH inserts.Shown in above table 1.
The scene of the measuring amount that example three: UE management is preserved.Measuring amount comprises the information shown in the above table 1, is included in the measurement report.
UE is to the RACH process, the RACH process that comprises success and failure is measured, if UE need store this measurement report and wait until and satisfy to measure report condition and report, if UE is before reporting the RACH measurement, the part configuration change has taken place in Serving cell, and this part configuration comprises the RACH configuration, perhaps other can have influence on the configuration change of random access procedure, such as the configuration of the down transmitting power of sub-district, the antenna tilt configuration of sub-district, perhaps the switching threshold configuration of sub-district etc.After UE recognizes this RACH configuration change, such as having known the RACH configuration change by system information updating message UE, the measurement result to the RACH of current service cell of storage before UE can delete.
Further, if the time span that UE experienced before measurement reports surpasses assign thresholds Tvalid, then UE can remove the measurement result of the time preservation before time T valid.Tvalid can be the default configuration of UE, also can be disposed by network side.
Further, if the measurement number that UE took place before measurement reports surpasses assign thresholds Nvalid, then UE can remove the measurement result of the preservation before measuring for Nvalid time recently.Nvalid can be the default configuration of UE, also can be disposed by network side.
Further, if certain of UE storage is measured time information corresponding not after specifying earliest time Tfirst, then UE can remove this measurement result.Described earliest time Tfirst can be the acquiescence default configuration, also can be disposed such as broadcast or dedicated signaling by common signaling by network side.
Further, UE satisfies after measuring condition and the successful reporting measurement reports, the measurement report of preserving before needing to remove.
Further, the UE that relates in example one, example two and the example three reports mechanism, can be by MAC layer control signaling, and also can be by special-purpose RRC control signaling.
Further, it can be the default configuration condition of UE that the RACH that relates in example one, example two and the example three measures report condition, also can be the report condition by the network side configuration.
The system that the UE measurement that a kind of RACH optimizes reports, this system comprises: measure and report the unit, be used for RACH and measure, and the UE reporting measurement reports is given the network element of network side.Wherein, measurement report comprises: successfully authorize and insert the relevant information that produces in the RACH process and/or successfully authorize the relevant information that produces in the access RACH process.
Here, this system also comprises assessment unit, and the successful mandate that the network element that is used for network side reports according to UE inserts the relevant information that the RACH process produces and/or successfully authorizes and insert the relevant information that produces in the RACH process, the performance of assessment RACH process.Below the various specific implementations of assessment unit are set forth respectively.
Here, the network element that assessment unit is further used for network side receive current measurement result and with the situation of the corresponding temporal information of current measurement result under, when with the corresponding temporal information of current measurement result in measurement period the time, according to current measurement result and with the statistics of the corresponding temporal information of current measurement result, assess the performance in the current RACH process, such as inserting probability and access delay probability, whether need to optimize to adjudicate current RACH configuration.
Assessment unit is further used for the network element of network side and receives under the situation of RACH type, is based on the RACH process of competition or based on non-competing RACH process according to the RACH type, assesses the performance of current RACH process respectively.
Assessment unit is further used for the network element of network side and receives under the situation of RACH failure indication, according to statistics to RACH failure indication, assess current RACH process and successfully authorize the success rate that inserts and successfully do not authorize in inserting, whether need to optimize to adjudicate current RACH configuration.
Here, this system also comprises: delete cells is used to delete the measurement report that UE preserves.Below the specific implementation of delete cells is set forth respectively.
Delete cells is used for UE and reports under the situation that the part configuration of current service cell takes place to change before the measurement result to current service cell that the UE deletion is preserved before changing.
Delete cells is used for UE and reports the time span that experiences before to surpass under the situation of the first assign thresholds Tvalid, the measurement result that the time of UE deletion before Tvalid preserves.
Delete cells is used for UE and reports the measurement number that takes place before to surpass under the situation of the second assign thresholds Nvalid, the measurement result that the UE deletion was preserved before Nvalid measurement recently.
The time that delete cells is used for the measurement that UE takes place before reporting, under the situation the 3rd threshold value Tfirst after, UE did not delete the measurement result of being preserved before time point Tfirst.
Here, delete cells is further used for UE to be satisfied after RACH measurement report condition and the successful reporting measurement reports, and deletion is the measurement result of preservation before.
The number of times of the RACH prefix that more than relates to can be expressed as Number of received RACHpreambles; Insert probability and can be expressed as Access Probability, be abbreviated as AP; The access delay probability can be expressed as Access Delay Probability, is abbreviated as ADP; Probability is lost in detection can be expressed as Detect Missing Probability, is abbreviated as DMP; The number of retries of RACH can be expressed as PREAMBLE_TRANS_COUNTER; The Serving cell sign can be expressed as Global Cell ID.
The above is preferred embodiment of the present invention only, is not to be used to limit protection scope of the present invention.
Claims (14)
1. method that terminal measurements of insert optimizing at random reports is characterized in that this method comprises: after inserting RACH at random and measuring, the terminal UE reporting measurement reports is to the network element of network side;
Wherein, described measurement report comprises: successfully insert the relevant information that produces in the RACH process and/or successfully do not insert the relevant information that produces in the RACH process.
2. method according to claim 1, it is characterized in that, this method further comprises: the relevant information that produces in the successful access RACH process that the network element of described network side reports according to described UE and/or successfully do not insert the relevant information that produces in the RACH process, the performance of assessment RACH process.
3. method according to claim 2, it is characterized in that the described relevant information that produces in the RACH process that successfully inserts comprises: current measurement result and with the corresponding temporal information of current measurement result, optional conflict number of times or optional RACH type of RACH.
4. method according to claim 2, it is characterized in that the described relevant information that produces in the RACH process that successfully do not insert comprises: RACH failure indication, optionally the Serving cell sign/with the corresponding temporal information of current measurement result, optionally the RACH frequency of failure or optional RACH type.
5. according to claim 3 or 4 described methods, it is characterized in that, the network element of described network side is received under the situation of described current measurement result and described temporal information, when described temporal information is in measurement period, according to statistics, assess the performance of current RACH process to described current measurement result and described temporal information;
The network element of described network side is received under the situation of described RACH type, is based on the RACH process of competition or based on non-competing RACH process according to the RACH type, assesses the performance of current RACH process respectively;
The network element of described network side is received and according to the statistics to described RACH failure indication, is assessed the success rate in the current RACH process under the situation of described RACH failure indication.
6. method according to claim 1 is characterized in that, this method further comprises: delete the measurement result that described UE preserves, be specially:
The configuration of the part of current service cell took place under the situation of change before UE reported, the measurement result to current service cell of being preserved before the described UE deletion change;
The time span of experience surpassed under the situation of the first assign thresholds Tvalid before UE reported, the measurement result that the described time of UE deletion before described Tvalid preserves;
The measurement number that takes place before UE reports surpasses under the situation of the second assign thresholds Nvalid, the measurement result that described UE deletion was preserved before nearest described Nvalid measurement;
UE reports the Measuring Time that takes place before under the situation of the 3rd assign thresholds Tfirst, the measurement result that the described time of UE deletion before described Tfirst preserves.
7. method according to claim 6 is characterized in that, described UE satisfies RACH and measures report condition and successfully report after the described measurement report measurement result of preserving before the deletion.
8. method according to claim 7 is characterized in that, described RACH measures report condition by the UE default setting or by the network side setting.
9. according to claim 1 or 2 or 3 or 4 or 6 or 7 or 8 described methods, it is characterized in that the described signaling of employing that reports comprises: media access control layer control signaling or special-purpose Radio Resource control control signaling.
10. the system that terminal measurements of insert optimizing at random reports is characterized in that this system comprises: measure and report the unit, be used for RACH and measure, and the UE reporting measurement reports is to the network element of network side;
Wherein, described measurement report comprises: successfully insert the relevant information that produces in the RACH process and/or successfully do not insert the relevant information that produces in the RACH process.
11. system according to claim 10, it is characterized in that, this system also comprises assessment unit, be used for the relevant information that successful access RACH process that the network element of network side reports according to UE produces and/or successfully do not insert the relevant information that produces in the RACH process, the performance of assessment RACH process.
12. system according to claim 11, it is characterized in that, described assessment unit, the network element that is further used for network side is received under the situation of described current measurement result and described temporal information, when described temporal information is in measurement period, according to statistics, assess the performance of current RACH process to described current measurement result and described temporal information;
The network element of network side is received under the situation of described RACH type, is based on the RACH process of competition or based on non-competing RACH process according to the RACH type, assesses the performance of current RACH process respectively;
The network element of network side is received and according to the statistics to described RACH failure indication, is assessed the success rate in the current RACH process under the situation of described RACH failure indication.
13. according to each described system in the claim 10 to 12, it is characterized in that, this system also comprises: delete cells is used for UE and reports under the situation that the part configuration of current service cell takes place to change before the measurement result to current service cell that described UE deletion is preserved before changing;
The time span of experience surpassed under the situation of the first assign thresholds Tvalid before UE reported, the measurement result that the described time of UE deletion before described Tvalid preserves;
The measurement number that takes place before UE reports surpasses under the situation of the second assign thresholds Nvalid, the measurement result that described UE deletion was preserved before nearest described Nvalid measurement;
UE reports the Measuring Time that takes place before under the situation of the 3rd assign thresholds Tfirst, the measurement result that the described time of UE deletion before described Tfirst preserves.
14. system according to claim 13 is characterized in that, described delete cells is further used for described UE and satisfies RACH measurement report condition and successfully report after the described measurement report measurement result of preserving before the deletion.
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