CN103260185A - Mobile terminal, network entity and relevant method thereof - Google Patents

Abstract

A mobile terminal is used for at least one honeycomb type radio network with a switching function. The mobile terminal has a report function, and is used for sending a report to the at least one honeycomb type radio network under the condition that a fault event occurs in communication between the mobile terminal and a radio base station of the at least one honeycomb type radio network. The report contains information related to the fault event. The mobile terminal is characterized in that the report comprises a history of fault event dates back to at least one successful event and the at least one successful event, the successful event is related to communication between the mobile terminal and one radio base station of the at least one honeycomb type radio network, and the at least one successful event happens before the history of the fault event. The invention further relates to a network entity and an information management method.

Description

Portable terminal, network entity and correlation technique thereof

Technical field

The present invention relates to field of telecommunications; And more particularly, relate to a kind of portable terminal, at least one the cellular radio electric network that is used for the tool handoff functionality, described portable terminal comprises function of reporting, described function of reporting is used under the situation of the event of breaking down of communicating by letter between described portable terminal and the radio base station that belongs to described at least one cellular radio electric network, send report to described at least one cellular radio electric network, described report contains the information relevant for described event of failure at least.The invention still further relates to a kind of at least one celluler radio network of network entity, and the approaches to IM at least one cellular radio electric network.

Background technology

(Self-organising network SON) is regarded as realizing the instrument that cheaper mobile radio telephone network is disposed to self-organizing network, and under the situation of new radio net technology, is regarded as realizing the instrument of the better acceptance of those technology.Yes can sell these new network technologies better for desired final result.

Self-organizing network is the generic term that functions such as compensation were planned, dispose, optimize, safeguard, interrupted in expression automatically.

The theme of the application's case is in the SON field of the Automatic Optimal that radio inserts.

The radio net performance is statistical in essence.Use different paths may experience diverse radio condition from the subscriber equipment (UE) (being also referred to as portable terminal) that a cell row enters another residential quarter.A UE may experience little area overlapping much and cause sizable intersection to disturb, and another UE may experience the coverage hole (coverage hole) between the residential quarter.Never anticipation network has 100.0% coverage rate, and 100.0% coverage rate is impossible, but will lack, for example the residential quarter 95% in, with the bit rate of realizing〉cell edge bit rate planned.Similarly, state all properties requirement to radio access network with the statistical term.

Usually gather statistics by (for example, per 15 minutes) termly from network element and observe network performance, and carry out post-processed to produce the performance indicator that concentrates at described network.The statistics counter is counted event usually, or realizes performance rate and increase progressively based on a certain during the cycle sometime, etc.The statistics counter also is called as performance measurement (Performance Measurement, pm) counter or performance indicator.

Counting usually to the absolute number of event of failure is not this fault becomes problem in radio net good measure.Because radio net is not perfectly, thus many " problems " can appear in radio net usually, but occurrence rate is lower.In many cases, the failure rate that counting draws need be related relevant with total traffic intensity in a certain mode, and must compare with the relevant threshold value about accepting fault level, in order to determine whether this particular case should be optimized.

Therefore, be used for optimization algorithm that radio inserts and will use the statistics counter as input (may according to above-mentioned paragraph through preliminary treatment), to determine whether need to optimize, what is optimized (which configuration parameter will add/remove/change), to change parameter (increase, reduce), change how much (step-lengths) in which way.

The possibility of result of optimizing the optimization Algorithm decision-making is to use new network configuration parameters, and/or also has new measurement configuration, to obtain excessive data and statistics from radio access network or UE.

Optimizing process is a control loop, and it can be restrained according to circumstances or soon or slowly, or may not restrain at all.Suppose and optimize algorithm with time scale: minute-hour-work in week.

In the application's case, the statistics counter is called as " pm counter ".Hypothetical network is kept described pm counter, and the pm counter can only increase progressively, thereby according to various standards event is counted.The feature of pm counter increases progressively standard by it and defines.

In the application's case, terms user equipment (UE) is used interchangeably with portable terminal.

In the application's case, use term to switch sensitivity (HO sensitivity) and indicate relative trend or sensitivity or the possibility of switching, namely satisfy the statistical likelihood of trigger criteria to begin to measure, make measurement report, make handover decisions of trigger.

In this document, also idle pulley is covered in this concept, i.e. HO sensitivity=idle mode cell gravity treatment sensitivity is namely satisfied the trigger criteria of trigger to begin to measure and make the statistical likelihood of residential quarter reselection decision-making.

At same situation frequently, what influence HO sensitivity mainly is with frequency mobility offset parameter, can will from residential quarter A to residential quarter B the time, applied skew be configured such that residential quarter B has precedence over all other residential quarters, namely increase HO sensitivity, in that relatively which is the actual wireless electrical measured value of skew being added to during strong residential quarter residential quarter B, perhaps can opposite way configuration skew, namely from the Radio Measurement value of residential quarter B being derived skew, and reduce the priority of residential quarter B, namely reduce HO sensitivity.

Except skew, other parameter that changes HO sensitivity also may be arranged, the timer that for example lags behind, during described timer, do not allow UE turn back to its from the residential quarter.If timer increases, HO sensitivity reduces so.If timer reduces, HO sensitivity increases so.

At other situation, for example between alien frequencies/RAT, still have other parameter can influence HO sensitivity, for example may there be the Serving cell standard, to begin based on other frequency or other radio access technologies (Radio Access Technology, RAT) UE measures, and namely UE drops to the measurement that can not begin before being lower than a certain threshold value based on other frequency/RAT in Serving cell quality/signal strength signal intensity/received power.If this threshold value increases (triggering probably), HO sensitivity increases so, and if this threshold value reduce (unlikely triggering), HO sensitivity reduces so.

Other parameter (for example, the parameter in the Wei Lai mobile system) also may influence HO sensitivity according to intention expressed in these chapters and sections certainly.

Prior art

The content of should measure, reporting and when to measure and report be among the core decision-making of the design of self-organizing network.As the prior art of the application's case, can mention following document.

3GPP R2-072432: this document proposes: for the purpose of self-optimizing network (SON), should carry out the Radio Measurement to pilot channel, and by UE(subscriber equipment or portable terminal) report to network.These reports are triggered by following situation: i) fault, if ii) throughput is lower than threshold value, and iii) by the clearly triggering from the SON server, or iv) when UE enters predefined geographic area.In addition, the position of measurement can be pointed out by cell i d, GPS and/or round trip cycle measured value.Also proposing the triggering reason that will measure and the time stamp of record is included in the report.

3GPP R2-072725 proposes radio base station should produce some measured values, comprise: the number of the switching from the cell-of-origin to the Target cell that triggers, the number of completed switching from the cell-of-origin to the Target cell and Radio Link Failure (Radio Link Failure, RLF) number is (based on controlling (Radio Resource Control, RRC) connection request is counted) to rising because of the Radio Resource of " Radio Link Failure ".These measurements are intended to find out UE and where " occur suddenly " after the experience Radio Link Failure.It is tuning to use described result to come: via the neighbouring relations of RRC relaying, be configured in the radio base station to be used for setting up the internuncial relation with other base station, and be configured in the radio base station to be used for the relation of interference coordination.

3GPP TS 36.300 V8.2.0 mention the identity of the Serving cell that report when UE can insert the residential quarter after RLF is old.

Yet the experience of self-organizing network mixes.Not an easy task for self-organizing network designs a kind of scheme that will take into account how different as far as possible problem scenes.Even above-mentioned prior art may be useful in some scenes, also always there is room for improvement.The problem relevant with making up self-organizing network is complicated: must determine what to be measured, how to measure and when measure, and then what will be reported, remember how to use the information that collects simultaneously.

Summary of the invention

Target of the present invention is the scheme that proposes a kind of solution to prior art problems or reduce prior art problems.Therefore, main target provides a kind of portable terminal that allows to have the self-organizing network through improving characteristic.

According to the present invention, this target realizes at the portable terminal of at least one the cellular radio electric network that is used for the tool handoff functionality, this portable terminal comprises function of reporting, this report function is used under the situation of the event of breaking down of communicating by letter between this portable terminal and the radio base station that belongs to this at least one cellular radio electric network, send report to this at least one cellular radio electric network, this report comprises the information about this event of failure at least.The difference of this portable terminal is that this report function is used for sending this report, makes this report contain historical record, and this historical record comprises:

-occur in another event of failure and at least one successful event before this event of failure, this success event is that this at least one successful event took place before the historical record of this another event of failure about communicating by letter between this portable terminal and the radio base station that belongs to this at least one cellular radio electric network.

Main theory of the present invention is the historical record that the event that this portable terminal experiences is provided in the report from portable terminal.This historical record comprises any event of failure up to now and comprises at least one successful event.This and prior art form contrast, and prior art is only reported event of failure on single basis, and in the present invention, reports potential whole event chain.Main benefit is: according to the present invention, can finish the scene that really occurs in the situation on the portable terminal according to fault chain (for example access attempts).Compare, prior art only provides diagnosis to the irregular working network according to the pure statistic evidence in the statistical measurements of being compiled into of the single failure that collects.The invention provides one event chain seemed visual angle how on earth.This makes it possible to understand better this network, and the therefore tuning decision-making after the inevitable acquisition more information made from the self-organizing network server.

According to the present invention, solve by the approaches to IM (feature that has claim 17 and 23 respectively) that is used at least one celluler radio network of network entity and at least one cellular radio electric network respectively or reduce prior art problems.

Dependent claims discloses further favourable aspect of the present invention.

Description of drawings

Referring now to accompanying drawing the demonstration embodiments of the invention are described, wherein:

Fig. 1 schematically illustrates portable terminal of the present invention and a plurality of network entity;

Fig. 2 illustrates the block diagram of the embodiment of the inventive method.

Embodiment

Major function in the application's case is how to arrange, adjust and optimize the mobility parameter automatically.According to the state of the art in the current wireless network, most of this parameter setting is manually carried out, and inevitable with many work.

The situation that the present invention pays close attention to is with frequency mobility (Intra-frequency mobility) situation.Appear on the cell edge with the frequency mobility.

Some problems that activity pattern (active mode) may occur when switching for example are:

The HO(that arrives neighbor cell switches) be triggered too early.The UE(subscriber equipment) may in Target cell, experience the access fault, or in Target cell, experience the RLF(Radio Link Failure behind the HO soon), or UE may switch from Target cell after HO immediately again.

The HO that arrives complete inappropriate neighbor cell is triggered, and for example remote residential quarter " infiltration " is in current area, for example on bridge.

The HO that arrives neighbor cell is triggered excessively evening.UE before receiving HO order, or even before transmitting measurement report, may in the cell-of-origin, experience RLF.

May there be the radio coverage hole.UE may experience RLF in the cell-of-origin before transmitting any measurement report, or UE will transmit the measurement report that triggers HO between alien frequencies (Inter-frequency) or RAT.

Corresponding problem may be under idle pulley (idle mode) the residential quarter gravity treatment time take place, and supposition makes the conclusion that draws from the ambulant observation to activity pattern also can be applicable to idle mode mobility in the identical or similar mobility configuration with use under the activity pattern of idle pulley.

Prior art proposes, for the purpose of SON, the Radio Measurement of pilot channel should be carried out and report, triggered by fault, and the position is pointed out by cell i d, GPS and/or round trip cycle measured value.The triggering reason of measurement and the time stamp of record are also proposed.

Prior art can't be handled following various problems scene:

The HO fault scenes wherein exists in the Target cell and inserts fault, i.e. " HO is triggered too early " and " HO is to inappropriate residential quarter " problem scenes.Under this scene, UE will at first switch to a residential quarter, and the access in this residential quarter is unsuccessful.UE then may rebulid in the 3rd residential quarter.

Repeatedly switching fast in the problematic radio scene, with failure scenarios or may in addition successfully to come to an end.If twice HO of success takes place very rapidly in mode one by one, network can detect this situation so.If relate to HO more than 2 times, if or event chain in the 3rd residential quarter, come to an end with RLF, network can't detect this situation so, follows the tracks of UE and will spend ample resources unless follow the tracks of UE(, and be possible to the unusual selected UE of minority only).

In these scenes, because the beginning residential quarter is for the main residential quarter of optimizing the mobility parameter, in which residential quarter, begin this event chain so importantly will know UE.These events begin with the successful HO that cuts improper residential quarter probably, and wherein radio condition worsens as quick as thought, even may can't switchback because piping off, etc.

It is also important that and to know whether event takes place at same apparent position.

The key area branch: begin in which residential quarter in order to know problem, UE must be able to report the complete history of mobility event, comprises successfully event, rather than only reports a specific fault as the triggering reason of Radio Measurement.

Diacritical point: as the position is determined propose in the prior art GPS, RTT residential quarter ID etc. are used for so that two methods that the different measuring value is relevant, or be at each UE(GPS) in support get up too consumes resources or too inaccurate (residential quarter ID/RTT).From the mobility viewpoint, the absolute position determines it is unwanted, but needs the relative position between the mobility event to determine.The effective means of doing like this is: according to the proposal in the application's case, carry out the association in time between the mobility event.Prior art proposes the time stamp of " record " Radio Measurement value.Though other method also satisfies these requirements, time stamp can provide required time related information really, time stamp need be applied in each event each, rather than only be applied to the Radio Measurement occasion.And window in the time of should coming the bi-directional scaling time correlation according to the speed of UE is in order to use this information in the mode that gears to actual circumstances.

Prior art proposes to report to the Radio Measurement value of network, as the main basis that draws about the conclusion of the applicability of a certain residential quarter.

This proposal is all good inadequately from many angles:

The Radio Measurement value is measured and filtration in quite short special time.For the purpose of configuration mobility parameter, main purpose is the residential quarter (for example, bridge/indoor-outdoor cell) of finding out and identifying for the radio environment of complexity.In this type of environment, the residential quarter that is measured as " by force " a moment may be found owing to long distance has disabled up link constantly at next, or may worsen as quick as thought.In fact, inappropriate residential quarter these special scenes that may be measured as " well " need the reason of blacklist or white list (a kind of neighbor cell list) exactly.There are some kinds of neighbor cell lists:

Other residential quarter that blacklist-indication should not be used/consider when UE is in the current specific cell.

Other residential quarter that white list 1-indication should be used/consider when UE is in the current specific cell.

White list 2-indication can use/consider when UE is in the current specific cell/preferred other residential quarter.

IRAT/IFREQ white list 0-indication carrier wave frequency and the radio access technologies that is associated.

When the parameter of optimal control mobility behavior, the actual mobility behavior (being the sequence that mobility event takes place) of observing UE may be more accurate; Rather than only observe the Radio Measurement value, it gives the snapshot that does well, but may be the bad designator of dynamic mobility behavior of real time.

The Radio Measurement value can provide the input of usefulness in some concrete scenes.Yet, consider and only need list those residential quarters of satisfying a certain threshold criteria, make UE report actual measurement to value waste transfer resource a little and bring the post-processed complexity.

The key area branch: from the viewpoint of mobility configuration, the residential quarter applicability better prove the ability of the connection of residential quarter therewith of keeping.Therefore, be not only based on the Radio Measurement value, and the reconstruction (success=can keep connection in the time of Measuring Time) that is based on success obtains the standard that conclusion and pm counter increase progressively, and is than only obtaining the much better and more sane method of applicability conclusion based on the Radio Measurement snapshot.

The key area branch: in order clearly to distinguish covering problem and mobility allocation problem, Radio Measurement is not enough, but also needs to observe real mobility behavior, namely needs the historical record of mobility event.

The secondary sections branch: in order to effectively utilize Radio Measurement, more effective is to carry out the first post-processed step in UE, and only reports the residential quarter of satisfying a certain standard.

Prior art does not have real proposition how to know whether UE whether on the cell edge between the residential quarter, namely can dispose to avoid this fault by revising mobility.

Key area branch: UE might guess from the Radio Measurement value on the cell edge between the residential quarter, but by according to betide mobility event that same apparent position (with in the window for the moment) locates judge to know UE is in mobility cell edge (HO is triggered at this place) can be more accurate.

Prior art does not consider how the UE measured value is mapped in the statistical parameter at all.

The key area branch: this proposal comprises and how effectively the UE measured value to be mapped in the available statistical parameter, can be used as the input of SON decision-making.

In a word, the application proposes when rebuilding (re-establishment), UE should be reported in nearest a plurality of Serving cell and other a plurality of residential quarters of having attempted inserting in the historical record of a plurality of mobility events.

This historical record back is called as " historical record of a plurality of mobility events in a plurality of residential quarters of visit recently " or is called for short " historical record ".

How in the application's case, further to propose this mobility event historical record of decipher after a while, how it be mapped in the statistics pm counter, and these counters of decipher how, switch (HO) sensitivity and neighbor cell list configuration to optimize.

One mainly is intended that the time-correlating events that takes place in the different districts by observing, by reaching a conclusion based on historical record, clearly identifies reconstruction and connectivity problem on the cell edge that betides between the different districts.As UE during in moving between cells, the behavior of mobility parameter control UE, and to have only the cell edge region between the residential quarter be what to pay close attention to.Connect fault and rebuild can be in the residential quarter inner the generation, when cell coverage area came out and return wherein (for example, owing to move in the basement), but from the angle of mobility parameter, this situation was not what pay close attention to such as: UE.

Another mainly is intended that to observe and approximately betides the event (that is, when fault takes place) of same position and reach a conclusion according to this event in a residential quarter, is in possible suitable cell in the coverage to find out at this same position.If can find these suitable cells, so originally may be by avoiding this fault through the better mobility parameter of optimizing.If the apparent position in fault can't detect proper cell at all, just can't avoid this fault by optimizing the mobility parameter so originally, but should optimize cell coverage area.

Make report betide a plurality of residential quarters (〉 1) in mobility event become a possible main benefit and be: for RLF a) takes place in Target cell after HO immediately, or b) the access fault in the Target cell, or c) repeatedly inserts fault, no matter which residential quarter UE is reconstructed into, all might and detect the UE behavior pattern that " HO is triggered too early " and " arriving the HO of improper residential quarter " problem scenes experiences easily, and the cell-of-origin of identification problem origin clearly.And, the adjacent area that this report can help to identify inappropriate adjacent area (too far away or too of short duration, have high failure strength when being used as the mobility adjacent area of certain other residential quarter) and pipe off mistakenly.

The main benefit of time correlation is that it can provide relative position indication (same position indication) quite accurately, and implements in very simple mode simultaneously.

Therefore, the present invention relates to a kind of UE or portable terminal in the ordinary course of things, be used for having at least one cellular radio electric network of handoff functionality, this portable terminal comprises function of reporting, this report function is used under the situation of the event of breaking down of communicating by letter between this portable terminal and the radio base station that belongs to this at least one cellular radio electric network, send report to this at least one cellular radio electric network, this report contains the information relevant for this event of failure at least.The difference of this portable terminal is that this report function is used for sending this report, makes this report comprise historical record, and this historical record comprises:

Occur in this event of failure another event of failure and at least one successful event in the past, this success event is that this at least one successful event took place before the historical record of this another event of failure about communicating by letter between this portable terminal and the radio base station that belongs to this at least one cellular radio electric network.

Describe the schematic illustrations according to portable terminal 2 of the present invention among Fig. 1.

As falling from the preceding paragraph obviously, portable terminal according to the present invention is intended to be used to one or more cellular radio electric networks with handoff functionality.The example of these networks is GSM, UMTS, and in principle even can expect the WIFI network, if it possesses for the treatment of the suitable function of switching.Certainly also can expect following radio net.

The function of reporting of portable terminal can be implemented by means of software in the microprocessor in portable terminal.Yet, function of reporting can be embodied as the set of an above physical unit.In addition, it needs not to be microprocessor, but can be any electric installation with essential feature, for example can use FPGA circuit, ASIC or event lump electronic building brick.When the needs function of reporting sent or receive report, it carried out this operation by incorporating the hardware (for example radio transmitter) that is necessary into.

As expansion, portable terminal can possess the historical record of making can with the specific geographical area function associated.This can realize by making this report function be used for sending this report, make this report contain:

The historical record of another event of failure that in first geographic area that portable terminal has occurred, takes place and at least one successful event.

Therefore in this way, historical record can be placed geographical context, and historical record can be used for seeking fault in the specific geographical area of cellular radio electric network.

There are many kinds may come to determine first geographic area.For instance, the function of reporting of portable terminal can be used for this first geographic area is defined as the already present zone of portable terminal during a period of time window.

Window is that a kind of historical record of the event in simply will reporting is limited to the mode of event in a geographic area during use.This geographic area be portable terminal this time zone (if portable terminal is kept in motion) of advancing therein during the window.Benefit is that the method do not need may be than the navigation system of costliness and power consumption, for example the GPS(global positioning system).

Therefore, the application proposes carrying out relative time between the mobility event in the historical record and corresponding Radio Measurement value/tabulation or the possible Target cell relevant.In most of the cases, need make event with in general one and samely will pay close attention to geographical position relevant (in order to can draw the conclusion that is applicable to that mobility is optimized).In many cases, clauses and subclauses need be relevant with reconstructed positions.

The main benefit of time correlation is that it can provide relative position indication (same position indication) quite accurately, and implements in very simple mode simultaneously.

In addition, this report function can be used for according to the speed bi-directional scaling of this portable terminal should the time window.Therefore, window is determined under the situation of first geographic area in use, can make the actual size of geographic area not rely on the gait of march of this portable terminal.

For this report function, there are many modes to come to estimate for the purpose of report this speed of this portable terminal.For instance, can use in the following program any one: Doppler measurement, cell change rate, network connect, area type.

Therefore, further propose to be used for relative time relevant the time window can be according to the speed bi-directional scaling of UE:

Wherein the speed of UE can be estimated based on L1 Doppler measurement or cell change rate etc. by UE itself, and is contained in the UE report,

Perhaps, it can be by UE network-evaluated in residential quarter that this place rebuilds,

Perhaps it can by cell-specific time correlation timer is provided clearly, come to indicate non-permanently according to the area type (being that the highway residential quarter is to the supermarket indoor cell) that the residential quarter covers by send signal to UE on the broadcast channel of residential quarter.

In this way, can realize determining based on the same position accurately of time correlation at high speed UE and low speed UE.

Proposition should limit the time window of the clauses and subclauses in UE storage and the report historical record, and namely UE does not need to report the clauses and subclauses more Zao than time X.

In the simplest possibility embodiment, this can be used as main time dependent mechanism.X can be arranged enough short, therefore can guarantee institute report to some extent clauses and subclauses all roughly the position identical with reconstructed positions be correlated with.This time correlation mode that expression is the simplest and dynamic is minimum.

In other cases, still need similar rule, so UE can abandon clauses and subclauses early based on clear and definite rule, and therefore save memory space.

According to above, further proposition can be according to the speed bi-directional scaling time cycle X of UE.

Scheme as an alternative, this report function can be used for estimating to determine this first geographic area by the geographical position.This estimation can be carried out by GPS, describes in detail as mentioned.

According to the present invention, the event of failure that portable terminal is reported can be an event in the group that the following forms: insert fault, Radio Link Failure.

Proposition is at inserting fault, and UE can provide the extraneous information of event of failure.

In particular, the access failure cause that proposes clearly indication can be:

" high capacity/a plurality of conflicts ".

The meaning of this reason will for: detect conflict, or detect no surplus resources and proceed joining procedure, basic reason is assumed to high capacity.Other sign that also can comprise high capacity.When network has responded to access attempts and indicate high capacity/backward command clearly in response, can use this reason.

" do not observe response message " at all.

The meaning of this reason will for: do not see response message (being not for any UE) at all.For LTE, this can be used as the indication that goes wrong.Supposition at LTE is: for inserting response message, come addressing UE with a shared address, this shared address is used all UE in the response of the access attempts of making sometime by wait.

" detect conflict at non-competing resource ".

If other clear and definite reason is all inapplicable, suppose that so radio coverage is subject matter.Perhaps, can indicate " radio reason " clearly.

The application proposes to increase progressively because inserting fault at least one pm counter of residential quarter, owing to reason of " radio reason " or any other concrete indication.

About the successful event of reporting, it can be any event from the group that is made up of the following: this portable terminal leaves this residential quarter with normal mode after successfully being connected to a residential quarter; This portable terminal leaves this residential quarter with normal mode after on successfully being attached to a residential quarter; This portable terminal successfully inserts a residential quarter to rebuild; This portable terminal is successfully kept the communication link with a residential quarter.

Can make many possible interpolations to the report that sends from portable terminal according to the present invention.For instance, function of reporting is used in the tabulation of the Target cell that provides available in this report.

According in the prior art and the proposal in the literature, suppose that UE can be directly reports the tabulation of Radio Measurement value or possible Target cell together with historical record in the residential quarter of its reconstruction.This will be simple principle, and can dispose all situations.

Preferably, for the purpose of the literature, UE should not need to carry out extra concrete Radio Measurement.If it will be preferred that UE can only store with the maximally related mobility measurements value of the triggering of store measurement values.Yet, may introduce some new requirements.

In any case suppose and to be based on the normal mobility measurements that UE must do originally for the Radio Measurement of the purpose of the literature.In particular, measure type can be receive signal strength indicator (RSSI), Reference Signal Received Power (RSRP, CPICH RSCP ...), Reference Signal Received Quality (RSRQ, CPICH Ec/Io ...).

Function of reporting can be further used for filtering out the tabulation that produces this possible Target cell in the extraneous residential quarter that this threshold value defines by the threshold value of using the cell quality parameter.

For produce may Target cell tabulation, propose that UE can use one or more threshold values and filter out the residential quarter that the entity that measures is higher than (perhaps being lower than) this threshold value, this measured value will be saved, and be reported with the tabulation of the residential quarter of nearest visit.This tabulation can be regarded as may the Target cell tabulation.

UE then can only report " can compatibly receive " residential quarter, and this residential quarter is the residential quarter of paying close attention to.In this way, can simplify post-processed, can avoid reporting actual measured value, and the tabulation of reporting can be condensed into short tabulation.

This threshold value can be changed according to the occupied current region of this portable terminal by this report function.

Proposition threshold value to be used can be different in zones of different, and its dynamically configuration in UE.

The definition that " suitably receives " can be different in zones of different, because network can have different planning cell edge bit rate in zones of different.By measured value and threshold value (being different from " in coverage " desired threshold value) are compared, gained pm counter can:

-provide stronger statistic evidence for some problem.

-possibility that projecting parameter (for example, the planning cell edge bit rate) is optimized is provided, and not only at " in coverage "/" outside coverage " problem.

Function of reporting also can be used for providing this possibility Target cell tabulation with the ordering of the value of this cell quality parameter.Therefore, further proposing the tabulation of possibility Target cell should be with respect to measuring quantity with descending/ascending sort.In this way, for example, might carry out statistical disposition to " the best " residential quarter, and can not cause any extra measurement report expense.

According to the present invention, in order to limit the size of report, this report function can be used for should be from the requirement of this at least one cellular radio electric network and the reporting cell measured value.

Therefore, propose that UE should come the requirement of automatic network to report these measured values, network need can indicate whether this report in RRC connection setting program.In addition, UE should not need directly to carry out extra measurement after reconstruction, unless network is indicated like this.In this way, can avoid unwanted measurement report.

Perhaps, propose that Cell Site Controller (for example, Node B) that UE rebuilds can pass through minizone controller signaling (for example EUTRA X2 interface) and report from the nearest mobility measurements of nearest Serving cell controller (for example, Node B) request.[prior art: having proposed the report of nearest mobility measurements can transmit via X2 switching when preparing, but problem is when breaking down, and UE can rebuild at another place, residential quarter that does not receive this information as yet].

In particular, rely on network-reporting to measure rather than allow UE report and to mean at general mobility measurements, UE can not only report at ambulant event measurement report, the identity of " the strongest new residential quarter " event and cell-of-origin thereof for example, but UE will need to report more complete information, the for example actual measured value of all detected residential quarters, or complete possible Target cell tabulation.In order to ensure using this more complete measurement report at the network that uses mobility SON, the pattern of further proposing measurement report can be can be by O﹠amp; The M configuration.

In this way, UE may omit the report to actual wireless electrical measurement/possibility Target cell tabulation.UE will only need the report historical record.

This can be used as the mode of the more measurement data of acquisition, and a kind of may have problem area at some, and does not force the mode of the more measurement results of UE storage.

If with this portable terminal rebuild the residential quarter of communicating by letter this time be put on the blacklist in early days at this historical record in the window, this report function also can be used for reporting at this residential quarter so.Therefore, propose that UE also can be included in the residential quarter that is put on the blacklist in the residential quarter in the current area or in the historical record in available targets cell report or measurement report.If comprise these residential quarters, should indicate them to be put on the blacklist clearly so, and they be put on the blacklist in which residential quarter.

Indication to the residential quarter of listing blacklist can be carried out in many ways: A) can be by specifying in standard and restriction UE behavior be determined, for example UE only considers the blacklist of the nearest residential quarter in the historical record, and B) UE indicates clearly and considers which blacklist.When finishing in the different districts in the historical record when listing blacklist, can indicate the residential quarter with the blacklist of discussing clearly.

In this way, might initiate extra measurement to these residential quarters that is put on the blacklist, and trigger the extra report to the SON server.

UE may not comprise the residential quarter that is put on the blacklist at ambulant general Radio Measurement.Under the situation when UE can't measure the residential quarter that is put on the blacklist as normal mobility measurements a part of for efficient, the application proposes can be after rebuilding/during in first residential quarter (residential quarter that in last residential quarter, is put on the blacklist) that may time point place's measurement be put on the blacklist.This can spontaneously be started by UE, maybe should come the request of automatic network and initial.UE can remember which residential quarter formerly is put on the blacklist in the residential quarter.

The replacement scheme that is put on the blacklist as the UE indicating cell, the controller of residential quarter (Node B) can might sort at UE measured value to the residential quarter that is put on the blacklist rebuilding by being configured to make, knows which residential quarter is put on the blacklist in neighbor cell.Therefore need or pass through O﹠amp by RAN signaling (LTE: via X2); The M signaling is come signaling neighbor cell blacklist information.Consciously, should when time correlation, carry out these measurements in the window.

Also can be under the situation of no performance loss, the residential quarter that indication is piped off mistakenly.

If propose in the window, all to be put on the blacklist in any residential quarter of the mobility event historical record of the residential quarter that UE successfully rebuilds therein in the residential quarter of visit recently when time correlation, this should be by ad hoc report so.In particular, reported under this situation that should in nearest Serving cell, be put on the blacklist in this residential quarter.

In this way, might be to the initial extra tracking of this UE and measurement.If UE keeps successfully being connected to this residential quarter in considerable time, this is the strong evidence (also referring to the chapters and sections about performance indicator) that this residential quarter is piped off mistakenly so.

According to the present invention, to decide on the residing position of report recipient, this report function can be used for being forwarded to another network node via the network node this report in this at least one cellular radio electric network.In this way, report can be transmitted to and be different from the portable terminal recipient that is associated of the network node of the network node of communication just with it at present.

Under recipient and situation that the network node of another cellular radio radio network node is associated, function of reporting can be used for being transmitted to another cellular radio radio network node via the network node this report in this at least one cellular radio electric network.

Network entity

According to the present invention, the recipient of report can be any network entity, at least one the cellular radio electric network that is used for the tool handoff functionality, this network entity comprises function of reporting, this report function is used under the situation of the event of breaking down of communicating by letter between portable terminal and the radio base station that belongs to this at least one cellular radio electric network, reception is from the report of this portable terminal, and this report contains the information relevant for this event of failure at least.The difference of this network entity is that this report function is used for receiving this report, and wherein this report is to contain following historical record:

-occurring in another event of failure and at least one successful event before the described event of failure, this success event is about communicating by letter between this portable terminal and the radio base station that belongs to this at least one cellular radio electric network.

Describe the schematic illustrations according to network entity of the present invention among Fig. 1.

Should point out that the function of reporting of this network entity is not identical with the function of reporting of portable terminal.But, being used for receiving report from portable terminal with regard to the function of reporting of network entity, the function of reporting of this network entity is the corresponding function of the function of reporting of portable terminal.About the physical implementation scheme of the function of reporting of network entity, it may be similar to the physical implementation scheme of the function of reporting of portable terminal, referring to above corresponding paragraph.

As expansion, network entity can possess the historical record of making can with the specific geographical area function associated.This can realize that wherein this report contains by making this report function be used for receiving this report:

-another event of failure that in first geographic area that portable terminal has occurred, has taken place and the historical record of at least one successful event.

As another expansion, network entity can be used for from the extra historical information of another network entity request except the information that portable terminal is reported, this another network entity is to identify from the historical record that portable terminal is reported, wherein this additional events information can contain:

-the event of failure that in the geographic area that portable terminal has occurred, has taken place and the further historical record of successful event.

Portable terminal in-another residential quarter reports occurs in further Radio Measurement value in this geographic area.

The benefit of the method is to increase the ability of handling longer event chain, and increase the amount of the Radio Measurement data be ready to use in statistical disposition (to draw more detailed conclusion), must not report similar events as in a plurality of residential quarters and the burden of identical measured value and can not increase the weight of portable terminal.

The function of reporting of network entity can be used for estimating at least one performance measurement counting device from this report, and it indicates the measuring of performance of this at least one cellular radio electric network.

The application proposes that the pm counter can be based on occurring in a plurality of residential quarters, taking place or the particular sequence of the event that overlaps in the window during in time correlation and increasing progressively in same approximate position.

The historical record of the mobility event in Fang Wen the residential quarter and current reconstruction event is intended to be used to providing input parameter can keep/increase progressively these pm counters at last.

These pm counters be intended that them will be quite important in the process that some statistic evidence that problem scenes is arranged is provided, wherein the problem scenes of deciding on mobility parameter (for example skew) can differentiate with the problem scenes that causes mainly due to " truly " coverage hole.And, can by increase problem scenes that HO sensitivity (HO should carry out in early days) solves should with can be by reducing HO sensitivity or even some residential quarter being piped off fully (blacklisting: HO sensitivity=zero) problem scenes that solves differentiates.

The SON algorithm will use these pm counters as input, and to how update configuration parameters makes decisions or proposes in order to operate this network in better mode.

This at least one performance measurement counting device can be used as this portable terminal because following arbitrary former thereby experience inserts the measuring of number of times of fault: high capacity, do not observe any response, detect conflict, other reason at non-competing resource at arbitrary mobile device.

Therefore, the application proposes that at least one the pm counter that is used for the residential quarter increases progressively because of the access fault that " not receiving any response message " brings at all.

The application proposes that at least one the pm counter that is used for the residential quarter increases progressively because of the access fault that " detecting conflict at non-competing resource " brings.

The application proposes that at least one the pm counter that is used for the residential quarter increases progressively because of the access fault that " high capacity/a plurality of conflicts " brings.

In particular, the application proposes that at least one the pm counter that is used for the residential quarter increases progressively because of the access fault that the set of " radio reason " (can indicate clearly) or other unknown communication problem reason brings.

The benefit of indication specific reasons " high capacity/a plurality of conflicts " and " detecting conflict at non-competing resource " is to have avoided when failure cause and mobility or coverage configuration-independent, and mobility or coverage configuration are carried out wrong adjustment.

Indication: the benefit of " at all not observing any response message " is to support trouble shoot.If UE has about accessing radio resources and/or inserts the access information (it may be because for example insert wrong residential quarter under the situation with residential quarter ID conflict) of the mistake of response addressing or radio resource, can expect this definite behavior so.

Indication ERROR ind: the benefit that detects conflict at non-competing resource can be the configuration mismatch that can detect between Target cell and the cell-of-origin.And, might detect the switching that is postponed by abnormality.

Indication: the benefit of " radio reason " is can detect UE to be linked into the residential quarter with the poor radio condition.This will be that the switching that arrives this residential quarter is triggered too early or this residential quarter may be indication concerning complete inappropriate Target cell from the switching of cell-of-origin.

All above-mentioned indications all be need statistic evidence and therefore the pm counter that proposes of needs support " soft " problem designator of statistical analysis, wherein when pm counter and threshold value are compared, find the evidence of problem.Possible pm counter also can be at first relevant to total access intensity to form the relative ratios.

In the literature, if not statement separately, when mentioning " access fault ", the meaning is reason=radio reason " access fault " so.

Another kind of possibility is that this at least one performance measurement counting device can be this portable terminal counting of experience Radio Link Failure and the number of times rebuild in another residential quarter subsequently in a residential quarter.

Therefore, the application proposes that at least one pm counter should be based in same approximate position or in the time correlation that begins from the RLF event time in the window, take place in the residential quarter to finish the standard of successfully rebuilding in RLF and another residential quarter and increase progressively, this pm counter is applicable to this paired residential quarter and this another residential quarter.

Based on this pm counter, whether deducibility goes out UE and may switch to rebuild and be done or uncompleted residential quarter.Suppose that UE will search for its strongest residential quarter after RLF, and attempt being reconstructed into this strongest residential quarter, this counter also will provide any residential quarter that whether exists UE may switch to when the RLF, namely under the situation that HO has been triggered in early days, and the indication of HO that whether may the executed success.This is applicable to frequently, alien frequencies and RAT(radio access technologies) between the mobility scene.

The high value that is higher than this at least one pm counter by observation, might make its with above this to the sum of the HO between the residential quarter or with the sum of RLF or relevant with the sum of rebuilding the RLF in this another residential quarter, finished, and itself and threshold value are compared, therefore the statistic evidence of possible/as easily to find out " HO is triggered excessively evening " problem scenes, and draw and should change this early triggers HO to increase HO sensitivity to the mobility offset parameter between the residential quarter conclusion.

If this another residential quarter is put on the blacklist in this residential quarter, evidence into mistake so can be interpreted as the high value of this pm counter above to blacklist it.

Perhaps, propose that at least one pm counter should be based in same approximate position or before or after with respect to RLF() time correlation the time window in, RLF and UE take place in the residential quarter measure at least one other residential quarter (signal strength signal intensity, quality etc.) and be higher than the standard of a certain threshold value and increase progressively, this pm counter is applicable to this paired residential quarter and this another residential quarter.

Except the observed result/benefit of aforementioned paragraphs, use is set to be higher than the threshold value of " in coverage " required threshold value, for example will be mapped to the threshold value of planning cell edge bit rate, and be similar to statistical analysis above, can find the more strong statistic evidence of " HO is triggered excessively evening " scene, thereby more clearly this problem and " true coverage hole " scene are differentiated, this might make the step-length of increase of HO sensitivity bigger, restrain quickly may make the SON algorithm.

RLF → RE rebuilds (successfully keeping)

The application proposes that at least one pm counter should be based in same approximate position or in the time correlation that begins from the RLF event time in the window, take place in the residential quarter to finish successfully in RLF and another residential quarter and rebuild, and UE keeps successfully being connected to the standard of another residential quarter in a period of time and increases progressively, and this pm counter is applicable to this paired residential quarter and this another residential quarter.

Perhaps can the relative standard of a last standard be counted, be that at least one pm counter should be based in same approximate position or in the time correlation that begins from the RLF event time in the window, take place in the residential quarter to finish successfully in RLF and another residential quarter and rebuild, and UE did not keep successfully being connected to another residential quarter (namely in a period of time, in at this moment, take place to switch for the second time or RLF etc.) standard and increase, this pm counter is applicable to this paired residential quarter and this another residential quarter.

If this another residential quarter is put on the blacklist in this residential quarter, the high value in the pm counter or the back low value in one counter provides this to pipe off may to be the evidence of mistake so.

If this another residential quarter is put on the blacklist in this residential quarter, the low value in the pm counter or the back high value in one counter provides this to pipe off to be correct evidence so.

Might only under the situation that above this another residential quarter is put on the blacklist, carry out any one increase progressively in above-mentioned two pm counters, namely indicate in the residential quarter of reconstruction unit in historical record based on UE to be put on the blacklist, or above in which residential quarter, be put on the blacklist this residential quarter based on the configuration information indication of Cell Site Controller (Node B).

Propose: similarly, this " successfully keep " can be increased progressively standard or " successfully keeping " relative standard is added to based on any one replenish in the pm counter of rebuilding, to form new pm counter, wherein high/low counting provides the residential quarter to be suitable as more ample evidence from the ambulant Target cell of cell-of-origin.

HO → AF → reconstruction

Propose that at least one pm counter should be based in same approximate position or in the time correlation that begins from the AF event time in the window, fault after being triggered in the cell-of-origin, HO takes place in the Target cell to insert when HO, and then complete successfully in arbitrary residential quarter and rebuild and increase progressively, this pm counter is applicable to this paired cell-of-origin and this Target cell.

Deducibility has UE can not switch to the residential quarter with access fault, because another residential quarter of working better (reconstruction residential quarter) is obviously arranged.

By observing the high value of above-mentioned at least one pm counter, might make it relevant with above-mentioned sum to the HO between the residential quarter, and itself and threshold value are compared, therefore this can be interpreted as the evidence of " HO is triggered too early " problem scenes, and draws and should change this later triggering arrives the above conclusion of the HO of this Target cell to reduce HO sensitivity to the mobility parameter between the residential quarter.

Also can draw Target cell may be fully improper and be the conclusion of the candidate cell that is put on the blacklist in the cell-of-origin, if even for example the HO success rate is still lower equally after having adjusted the mobility offset parameter, Target cell can be piped off so.

Perhaps, propose that at least one pm counter should be based in same approximate position or in the time correlation relevant with the AF event time in the window, fault after being triggered in the cell-of-origin, HO takes place in the Target cell to insert, and measure residential quarter except this Target cell and be higher than a certain threshold value (signal strength signal intensity, quality) and increase progressively, this pm counter is applicable to this paired cell-of-origin and this Target cell.

Except the observation/benefit of aforementioned paragraphs, use is set to be higher than the threshold value of required threshold value in coverage, for example will be mapped to the threshold value of planning cell edge bit rate, and be similar to statistical analysis above, can find the more strong statistic evidence of " HO is triggered too early " scene and/or " Target cell is improper ", thereby more clearly this problem and " true coverage hole " scene are differentiated, this will make that might to make the step-length that reduces of HO sensitivity bigger, restrain quickly may make the SON algorithm.Can make the decision-making that this residential quarter is piped off quickly.

Should there be at least one pm counter in proposal, this at least one pm counter is when the time correlation that the access fault from Target cell begins in the window, when the successful reconstruction in a certain residential quarter is followed after the handoff failure from the cell-of-origin to the Target cell, increase progressively when this is successfully rebuild, wherein this pm counter is applicable to paired this a certain residential quarter and this cell-of-origin.

Height counting in the above-mentioned pm counter can mean that this a certain residential quarter is the suitable HO candidate cell of the UE in this cell-of-origin.Conclusion can be the HO sensitivity that should increase from the cell-of-origin to the Target cell.

If above this residential quarter is put on the blacklist in this cell-of-origin, the height in this counter counting is that this pipes off and is the strong evidence of mistake so.

HO → HO → ... → AF → reconstruction

Propose that at least one pm counter should be based at same apparent position or in the time correlation that begins from the AF event time in the window, beginning with the HO of first cell-of-origin to first Target cell, when time correlation the window internal trigger repeatedly after the HO, fault takes place in the residential quarter to insert when HO, and complete successfully in arbitrary residential quarter subsequently and rebuild and increase progressively, this pm counter is applicable to this paired first cell-of-origin and this first Target cell.

It is impossible that this scene may seem at first view, but consider and use the SON algorithm to optimize mobility, thereby this may take place existing to be optimized in 50% the scene that has problem area to cause being put on the blacklist apart from first Target cell residential quarter far away.If do not finish the blacklisting of the correspondence of rightabout (from first cell-of-origin to first Target cell) as yet, UE may will be switched in the remote residential quarter (first Target cell) very much so, and then this locality switches to another remote residential quarter (because blacklisting), but haveing UE, deducibility should not switch to the residential quarter with access fault, because another residential quarter of working better (reconstruction residential quarter) is obviously arranged.Judge from the very fast sequence of HO the residential quarter seems it is not very suitable in the middle of all, and the supposition basic reason is the HO in the quick HO chain.

By observing the above high value of this at least one pm counter, might make it and above this sum to the HO between the residential quarter is relevant, and itself and threshold value are compared, therefore this can be interpreted as the evidence of " having triggered the HO that arrives improper residential quarter " problem scenes, and draws and should change that this is later or trigger and arrive the above conclusion of the HO of this first Target cell to reduce HO sensitivity to the mobility parameter between the residential quarter.Also can consider to pipe off fully.

According to the selection of the visual embodiment of network entity of the present invention and implement in the diverse location in network.For instance, can in arbitrary equipment of the group that comes free the following to form, implement this network entity: radio base station transceiver, operation and the management server of this at least one cellular radio electric network.

Method of the present invention

The present invention also comprises a kind of method.The general type of this method is the approaches to IM at least one cellular radio electric network, and this at least one cellular radio electric network has handover functionality, and the method includes the steps of:

A) under the situation of the event of breaking down of communicating by letter between the portable terminal that is used for this at least one cellular radio electric network and the radio base station that belongs to this at least one cellular radio electric network, send report from this portable terminal to this at least one cellular radio electric network, this report contains the information relevant for this event of failure at least

B) at least one the celluler radio network of network entity reception that has handoff functionality for this this report from this portable terminal.The difference of this method is step a): send this report so that this report historical record from portable terminal, this historical record comprises: occur in another event of failure and at least one successful event before the described event of failure, described successful event is about communicating by letter between this portable terminal and the radio base station that belongs to this at least one cellular radio electric network.

Describe the block diagram of the embodiment of the method according to this invention among Fig. 1, point out step a and step b.

As expansion, can in step a), comprise according to approaches to IM of the present invention: send this report so that this report contains another event of failure of having taken place in first geographic area that occurs of this portable terminal and the historical record of any successful event.

The literature has proposed some crucial concerning can drawing suitable conclusion pm counter features and has increased progressively standard.

Also can calculate the pm counter from other pm counter, some the pm counters in these other pm counters are called as the KPI(key performance indicators), and other pm counter can be through design to use in some algorithm.

In the literature, proposed to increase progressively standard at the UE data report of mobility configuration optimization and the pm counter that is associated, namely UE does not directly report the pm counter, but network is based on keeping these pm counters from the report of some/many UE.

The position of SON algorithm can be at centralization entity (O﹠amp for example; The M back-up system) in, maybe can be distributed in the network.Suppose that only a SON entity is implemented the mobility Parameter Optimization of a residential quarter.

Pm counter and purposes in the method for the invention thereof may be numerous certainly.Below be some examples.

Can further comprise according to approaches to IM of the present invention:

C) network entity is according to circumstances from another network entity amount of the claim external information, and this extraneous information is from the event of the early stage report of this portable terminal and the early stage registration relevant with this portable terminal,

D) keep based on the standard that draws from step b and the information that receives the step c according to circumstances and at least one the pm counter that increases progressively.

Can further comprise according to approaches to IM of the present invention: this step d) relates to based in same geographic area, the standard of successfully rebuilding takes place in the residential quarter to finish in Radio Link Failure and another residential quarter, and increasing progressively at least one pm counter, this pm counter is applicable to paired this residential quarter and this another residential quarter.

Can further comprise according to approaches to IM of the present invention: only under the situation about in the residential quarter that this another residential quarter is mentioned, being put on the blacklist, carry out increasing progressively of pm counter in historical record.

Can further comprise according to approaches to IM of the present invention: this step d) relates to based in a geographic area, switching in is triggered in the cell-of-origin, and fault takes place to insert in Target cell afterwards, and then complete successfully reconstruction and increase progressively at least one pm counter in arbitrary residential quarter, this pm counter is applicable to this paired cell-of-origin and this Target cell.

Can further comprise according to approaches to IM of the present invention: this step d) relates to based in a geographic area, switching in is triggered in the cell-of-origin, and fault takes place to insert in Target cell afterwards, and the some parameters that measure another residential quarter except Target cell are higher than a certain threshold value, and increasing progressively at least one pm counter, this pm counter is applicable to this paired cell-of-origin and this Target cell.This parameter can be: signal strength signal intensity, quality.

Can further comprise according to approaches to IM of the present invention: this step d) relates in a geographic area, successful reconstruction in a certain residential quarter is followed after the handoff failure from the cell-of-origin to the Target cell, increase progressively at least one pm counter when this is successfully rebuild, wherein this pm counter is applicable to paired this a certain residential quarter and this cell-of-origin.

Can further comprise according to approaches to IM of the present invention: this step d) relates to based in same geographic area, switching beginning with first cell-of-origin to first of first Target cell, after repeatedly switching has been triggered, fault takes place to insert in a residential quarter of switching, and then in arbitrary residential quarter, complete successfully reconstruction, and increasing progressively at least one pm counter, this pm counter is applicable to this paired first cell-of-origin and this first Target cell.

Can further comprise according to approaches to IM of the present invention: for the pm counter relevant with second residential quarter with first residential quarter, wherein in order to increase progressively the pm counter, must satisfy portable terminal and successfully be connected to this first residential quarter and reach the additional criteria in cycle sometime.

Can further comprise according to approaches to IM of the present invention: for the pm counter relevant with second residential quarter with first residential quarter, wherein in order to increase progressively the pm counter, must satisfy portable terminal and successfully be connected to the additional criteria that this second residential quarter reaches a certain duration.

Can further comprise according to approaches to IM of the present invention: for the pm counter relevant with second residential quarter with first residential quarter, wherein in order to increase progressively the pm counter, must satisfy portable terminal and successfully not be connected to the additional criteria that this second residential quarter reaches a certain duration.

The historical record example of the mobility event in the residential quarter of visit is as follows recently:

Example 1

The Radio Measurement value that provides with the threshold value form is provided the historical record of the mobility event in the residential quarter of visit recently, can look like like this:

The application proposes and can create clauses and subclauses in the cell list of visit recently at the event of following kind:

UE leaves cell-of-origin/Serving cell with normal mode (for example, being triggered by the reception of switching command).

UE detects Radio Link Failure (fault after the success communication in the residential quarter).

UE detects and inserts fault (setting up communication link fault before fully)

UE(is successfully) insert the residential quarter to rebuild.This clauses and subclauses main cause is for the crosscorrelation point of UE time reference is provided, in order to can make the sequential between the event clearly relevant.These events are called as " mobility event " herein.

Indicate the benefit of HO to be namely to distinguish in the near future at HO easily distinguishing between the fault in inside, residential quarter and the fault on the cell edge clearly.

When observing generation event in the different districts (regardless of what) in the window when short, can carry out identical differentiation.

The application proposes might be under the situation that does not measure the residential quarter that is higher than a certain threshold value, and report has the radio measurement report (UE can report which kind of has used measure type and threshold value) of zero entries.

Situation when in this way, UE indicates UE to be in " truly " coverage hole easily.

Example 2

No time stamp, window in the time of only (clearly expression in this example)

<Time?window:4000ms>

<CellID:current><event:access><Blacklisted?inCellID:id2>

<CellID:id1><event:AF><Reason:highload>

<CellID:id2><event:Src?cell?leave>

<CellID:id3><event:Src?cell?leave>?。

Claims (35)

1. portable terminal, be used for having at least one cellular radio electric network of handoff functionality, described portable terminal comprises function of reporting, described function of reporting is used under the situation of the event of breaking down of communicating by letter between described portable terminal and the radio base station that belongs to described at least one cellular radio electric network, send report to described at least one cellular radio electric network, described report comprises the information about described event of failure at least, described portable terminal is characterised in that described function of reporting is used for sending described report makes described report comprise:

Traced back to the history of the event of failure of at least one successful event by described event of failure, and described at least one successful event, described successful event is that described at least one successful event took place before described event of failure history about communicating by letter between described portable terminal and the radio base station that belongs to described at least one cellular radio electric network.

2. portable terminal according to claim 1, wherein said function of reporting are used for sending described report makes described report comprise:

Occur at least one the successful event in first geographic area that described portable terminal occurred.

3. portable terminal according to claim 2, wherein said function of reporting are used for that described portable terminal is appeared at one of them zone at a timing window in the phase and are defined as described first geographic area.

4. portable terminal according to claim 3, wherein said function of reporting are used for window when according to the speed bi-directional scaling of described portable terminal.

5. portable terminal according to claim 4, wherein said function of reporting is used for estimating by means of following any process the described speed of described portable terminal: Doppler measurement, the cell change rate, network connects, area type.

6. portable terminal according to claim 2, wherein said function of reporting are used for estimating to determine described first geographic area by the geographical position.

7. portable terminal according to claim 1, wherein said event of failure is one of following event: insert fault, Radio Link Failure.

8. portable terminal according to claim 1, wherein said successful event is arbitrary situation of the following: described portable terminal leaves this residential quarter with normal mode after successfully being connected to a residential quarter; Described portable terminal leaves this residential quarter with normal mode after on successfully being attached to a residential quarter; Described portable terminal successfully inserts a residential quarter to rebuild; Described portable terminal is successfully kept the communication link with a residential quarter.

9. portable terminal according to claim 1, wherein said function of reporting are used for providing in described report the tabulation of available Target cell.

10. portable terminal according to claim 9, wherein said function of reporting are used for producing in the following manner the tabulation of described available Target cell: the threshold value of using a cell quality parameter filters out the extraneous residential quarter of defining in described threshold value.

11. portable terminal according to claim 10, wherein said function of reporting are used for changing described threshold value according to the current footprint area of described portable terminal.

12. portable terminal according to claim 10, wherein said function of reporting are used for the tabulation that ordering with the value of described cell quality parameter provides described available Target cell.

13. portable terminal according to claim 1, wherein said function of reporting are used for should be from the requirement of described at least one cellular radio electric network and the reporting cell measured value.

14. portable terminal according to claim 1, wherein said function of reporting be used for with described portable terminal rebuild the residential quarter of having communicated by letter when described in the window under the situation that described historical record is put on the blacklist, report at described residential quarter.

15. portable terminal according to claim 1, wherein said function of reporting are used for being forwarded to another network node via a described report of network node of described at least one cellular radio electric network.

16. portable terminal according to claim 1, wherein said function of reporting is used for being forwarded to via the described report of the network node of described at least one cellular radio electric network the network node of another celluler radio.

17. network entity, be used for having at least one cellular radio electric network of handoff functionality, described network entity comprises function of reporting, described function of reporting is used under the situation of the event of breaking down of communicating by letter between portable terminal and the radio base station that belongs to described at least one cellular radio electric network, reception is from the report of described portable terminal, described report comprises the information about described event of failure at least, described network entity is characterised in that, described function of reporting is used for receiving described report, and wherein said report comprises:

Traced back to the history of the event of failure of at least one successful event by described event of failure, and described at least one successful event, described successful event is that described at least one successful event took place before described event of failure history about communicating by letter between described portable terminal and the radio base station that belongs to described at least one cellular radio electric network.

18. network entity according to claim 17, wherein said function of reporting are used for receiving described report, make described report comprise:

At least one the successful event that in first geographic area that described portable terminal has occurred, has taken place.

19. network entity according to claim 17, wherein said function of reporting is used for from the additional events information of another network entity request except the information that described portable terminal is reported, described another network entity is the described historical identification of reporting according to described portable terminal, and wherein said additional events information comprises at least one in the following:

Comprise the event of failure that in second geographic area that described portable terminal occurs, taken place and the further historical record of successful event;

Described portable terminal reports in another residential quarter occurs in Radio Measurement value in described second geographic area.

20. network entity according to claim 17, wherein said function of reporting be used for estimating at least one performance measurement counting device from described report, described performance measurement counting device is the measuring of performance that is used to indicate described at least one cellular radio electric network.

21. network entity according to claim 20, wherein said at least one performance measurement counting device is to described portable terminal because following arbitrary former thereby experience inserts the measuring of number of times of fault: high capacity, do not observe any response at arbitrary portable terminal, detect conflict at non-competing resource, the radio reason.

22. network entity according to claim 20, wherein said at least one performance measurement counting device are the countings to following event: experience Radio Link Failure and the experience reconstruction in another residential quarter subsequently in a residential quarter of described portable terminal.

23. network entity according to claim 17, wherein said network entity be following each: the radio base station transceiver of described at least one cellular radio electric network, the operation and management server.

24. an approaches to IM is used at least one cellular radio electric network, described at least one cellular radio electric network has handoff functionality, and described method comprises following steps:

A) under the situation of the event of breaking down of communicating by letter between the portable terminal that is used for described at least one cellular radio electric network and the radio base station that belongs to described at least one cellular radio electric network, send report from described portable terminal to described at least one cellular radio electric network, described report comprises the information about described event of failure at least

B) in the described report that receives for described at least one celluler radio network of network entity with handoff functionality from described portable terminal,

Described method is characterised in that, in step a): send described report so that described report comprises from portable terminal: historical and described at least one the successful event that is traced back to the event of failure of at least one successful event by described event of failure, described successful event is that described at least one successful event took place before described event of failure history about communicating by letter between described portable terminal and the radio base station that belongs to described at least one cellular radio electric network.

25. approaches to IM according to claim 24, wherein said step a): send described report so that described report is included in described portable terminal and come across at least one the successful event that takes place in wherein first geographic area.

26. approaches to IM according to claim 24 further comprises:

C) described network entity is to another network entity amount of the claim external information, and described extraneous information is from the early stage report of described portable terminal and the early stage registered events relevant with described portable terminal,

D) safeguard at least one performance measurement counting device, the standard that described performance measurement counting device draws based on the described extraneous information that receives and increasing progressively from step c.

27. approaches to IM according to claim 26, wherein said step d) relates at least one performance measurement counting device and increases progressively based on following standard: in same geographic area, take place in the residential quarter to finish successfully in Radio Link Failure and another residential quarter and rebuild, described performance measurement counting device is applicable to paired a described residential quarter and described another residential quarter.

28. approaches to IM according to claim 27 wherein under the situation about only being put on the blacklist in the residential quarter that described another residential quarter is mentioned in described history, carries out described performance measurement counting the described of device and increases progressively.

29. approaches to IM according to claim 26, wherein said step d) relates at least one performance measurement counting device and increases progressively based on following standard: in a geographic area, after in switching in the cell-of-origin, being triggered, fault takes place to insert in the Target cell that switches, and then complete successfully reconstruction in another residential quarter, described performance measurement counting device is applicable to paired described cell-of-origin and described Target cell.

30. approaches to IM according to claim 26, wherein said step d) relates at least one performance measurement counting device and increases progressively based on following standard: in a geographic area, after in switching in the cell-of-origin, being triggered, fault takes place to insert in Target cell, and a parameter that measures another residential quarter except described Target cell is higher than a threshold value, and described performance measurement counting device is applicable to paired described cell-of-origin and described Target cell.

31. approaches to IM according to claim 26, wherein said step d) relates at least one performance measurement counting device and increases progressively based on following standard: after the handoff failure in a geographic area from the cell-of-origin to the Target cell, successfully rebuild in another residential quarter, wherein said performance counter is applicable to paired described another residential quarter and described cell-of-origin.

32. approaches to IM according to claim 26, wherein said step d) relates at least one performance measurement counting device and increases progressively based on following standard: in same geographic area, switch beginning with first cell-of-origin to first of first Target cell, after repeatedly switching is triggered, fault takes place to insert in a residential quarter of switching, and then complete successfully reconstruction in another residential quarter, described performance measurement counting device is applicable to paired described first cell-of-origin and described first Target cell.

33. according to the described approaches to IM of each claim in the claim 27 to 32, for the performance measurement counting device relevant with second residential quarter with first residential quarter, wherein in order to increase progressively described performance counter, must satisfy following standard: described portable terminal successfully is connected to described first residential quarter and reaches certain time length.

34. according to the described approaches to IM of arbitrary claim in the claim 27,28,31, for the performance measurement counting device relevant with second residential quarter with first residential quarter, wherein in order to increase progressively described performance measurement counting device, must satisfy described portable terminal and successfully be connected to the additional criteria that described second residential quarter reaches certain time length.

35. according to the described approaches to IM of arbitrary claim in claim 27 or 28, for the performance measurement counting device relevant with second residential quarter with first residential quarter, wherein in order to increase progressively described performance measurement counting device, must satisfy described portable terminal and successfully not be connected to the additional criteria that described second residential quarter reaches certain time length.

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