CN102264095B - Method for determining UE (user experiment) position information and network side device - Google Patents
Method for determining UE (user experiment) position information and network side device Download PDFInfo
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Abstract
The invention relates to the communication field and provides a method for determining UE (user experiment) position information and for configuring parameters for UE so as to solve the problem that the determination of UE position information depends on RRC (radio resource control) connection establishment. The method comprises the following steps: determining a path loss threshold (PLTH) of UE entering a cell edge; determining a group threshold PLTH<0> matched with the PLTH and sending to each UE in a cell, PLTH<0> being used as a path loss comparison reference when UE initiates a competition random access, and determining a lead code in different groups selected when the competition random access is initiated according to the compared results by UE; when the UE initiates the random accessing, obtaining the random access way selected by the UE; when the selected random access way is a competition random access, obtaining the lead code selected when the random access is obtained; and determining the position information of the UE according to the groups to which the selected lead code belongs. The method can be used for reducing the space interface signaling expense caused by blindly performing parameter configuration when the RRC is not established, and can be used for further improving the resource utilization of the system.
Description
Technical field
The present invention relates to communication technical field, relate in particular to a kind of method and network equipment of definite user terminal UE positional information.
Background technology
From user's business demand, people are more and more higher for the demand of the relevant service in position in mobile network (as location, cell phone map etc.), and from the optimization of entire system performance, network side need to be known user's positional information.Therefore,, in the follow-up evolution system of 3G (Third Generation) Moblie technology, as LTE (Long Term Evolution, Long Term Evolution) system and LTE-A system, the method for definite user terminal UE positional information has been carried out to relevant regulation.
Particularly, in LTE system, in order to realize as much as possible identical networking, LTE standard has been introduced ICIC (Inter-Cell Interference Coordination, Inter-Cell Interference Coordination) technology, one of the enforcement of ICIC technology important according to being exactly that center of housing estate/marginal position ownership according to UE adopts different resource allocation policies.Enforcement for ICIC technology, obtain center of housing estate/marginal position information of UE, in standard, defined by UE RSRP (Reference Signal Received Power, Reference Signal Received Power) the measurement report reported event of measurement triggering has been determined to the position of UE.
The measurement report reported event defining for ICIC in LTE standard at present, has utilized existing A3 event.The entry condition of stipulating A3 event in LTE standard is: in setting triggered time Time to Trigger, continue to meet formula (1):
Mn+Ofn+Ocn-Hys＞Ms+Ofs+Ocs+Off (1)
Be that adjacent area quality is greater than a threshold value than local area quality.
The condition of leaving of A3 event is: at setting triggered time Time to Trigger, continue to meet formula (2):
Mn+Ofn+Ocn+Hys＜Ms+Ofs+Ocs+Off (2)
Be that adjacent area quality is less than a threshold value than local area quality.
In formula (1) and (2), the measurement result that Mn obtains for measuring adjacent cell RSRP; Ofn is the frequency shift (FS) of adjacent cell; Ocn is the community skew of adjacent cell; The measurement result that Ms obtains for measuring Serving cell RSRP; Ofs is the frequency shift (FS) of Serving cell; Ocs is the community skew of Serving cell; Hys is the sluggish parameter of event; Off is the offset parameter of A3 event.In above-mentioned parameters, removing Mn and Ms is that UE measures, and other parameter is notified UE by base station.
Meet the entry condition of A3 event for meeting the cell edge condition that enters, meet the condition of leaving of A3 event for meeting the cell edge condition of leaving, LTE standard has been an A3 event definition parameters R eport OnLeave, if this parameter value is true, when meeting the condition of leaving of A3 event and entry condition, all need reporting measurement reports.If this parameter value is false, reporting measurement reports when meeting entry condition only.
General Report On Leave is set to true, illustrates that it is for distinguishing center of housing estate/marginal position of UE that this measurements reported event configures.If meet the entry condition of A3 event, illustrate that this UE enters the edge of community; If meet the condition of leaving of A3 event, illustrate that this UE leaves the edge of this community and corresponding adjacent cell.But it is noted that meeting the condition of leaving only means that UE meets the edge that leaves this community and respective cell, can not just judge that this UE enters the central area of this community accordingly; Only have and for the A3 event of these community adjacent cells all with it, all meet while leaving condition as this UE, just mean that this UE enters center of housing estate region.Report On Leave is set to false, and this measurement reported event configuration is construed as for handover.
Because measurement and the reporting of corresponding measurement report of above-mentioned RSRP must be at RRC (Radio ResourceControl, Radio Resource control), after connecting foundation, other parameter that base station entered or left judgement by sending measuring configuration messages acquisition A3 event just can be carried out afterwards.Therefore, dependence meets A3 event entry condition and the condition of leaving carries out offering the center of housing estate/marginal position information that obtains UE on RSRP, must be in a period of time after setting up RRC connection just likely.
Above-mentioned for distinguishing user's the A3 event of center of housing estate/marginal position information, at 3GPP (3 except standard definition
rdgeneration Partnership Project, three generations's collaborative project), in Release 9 release protocol, give definite method of multiple other position information of user's terminal.But, that LTE system or LTE-A system all exist a problem, the method of determining the positional information of UE often all depends on UE and carries out RRC and connect the measuring amount in the measurement report reporting after setting up, and before required measurement report reports, it is unknown that the positional information of UE remains.
In addition, for the user terminal UE that supports global position system GPS, can by the built-in GPS of UE, measure the positional information of UE, then after RRC connects foundation, report base station.Obviously, if network side relies on the GPS of terminal to obtain the current location of UE, the positional information of this UE is also inevitable just can report base station after RRC connects foundation.
In the method for definite UE positional informations such as the multiple spot time difference OTDOA proposing in LTE-A system, timing advance TA+ angle of arrival AOA, UE adopts relevant information to measure and report the positional information of oneself.But all there is a basic precondition in these methods, at UE after connected state.
LTE system and LTE-A system are about determining in the open method of UE positional information at present, the RRC there is no at UE just can determine the method for the positional information of UE at the beginning of connecting foundation, customer position information is established a capital to be really the measurement of being correlated with by UE again after RRC connect to set up and to report just and can obtain, therefore before the measurement of correlation that obtains UE reports, for network side, the positional information of UE is (only the knowing which Serving cell, UE position) that cannot know.Yet, performance for optimization system, in LTE system, network side configures relevant parameter (as above, the transmission bandwidth of downlink power control parameter, Sounding reference symbol to each UE at present, etc.) be all relevant to center of housing estate/marginal position of UE, and these parameters just need to connect foundation or RRC connection reprovision signal deployment to UE by RRC at RRC in connect setting up.
Due to now, according to disclosing at present center of housing estate/marginal position information that method still be can not determine UE, therefore conventionally can suppose that UE, in center of housing estate or cell edge, is then configured according to the parameter of answering in contrast.After receiving that the measurement of correlation of UE reports, then judge according to the physical location ownership of UE whether these parameters need reprovision.Because the supposition tool of above-mentioned UE initial position message bears the character of much blindness, must cause system to have very large probability need to reconfigure above-mentioned parameter, must bring the expense that interface-free resources is unnecessary like this, thereby reduce the capacity of system.Meanwhile, before network side obtains the positional information that UE is correct, if be assumed to be UE according to wrong positional information, provide service, must cause the QoS of UE to be difficult to be met, thereby affect user, experience.
Summary of the invention
The embodiment of the present invention provides a kind of definite user terminal UE positional information and for UE carries out method and the network equipment of parameter configuration, in order to solve UE positional information, determines that depending on RRC connects the existing problem of setting up.
A kind of method that the invention provides definite user terminal UE positional information, comprising:
Determine that UE enters the path loss thresholding PL of cell edge
tH;
Determine and described PL
tHthe grouping thresholding matching
and send to each UE in this community, described in
path loss benchmark while accessing at random for initiate competition as UE, UE selects lead code in different grouping while determining that according to comparative result initiating competition accesses at random;
In UE initiating random access procedure, obtain the selected Random Access of UE;
When selected Random Access accesses for competition is random, selected lead code while obtaining the random access of UE initiation competition;
According to the grouping under the selected lead code of described UE, determine the positional information of described UE.
The present invention also provides the method for another kind of definite user terminal UE positional information, comprising:
In UE initiating random access procedure, obtain the selected Random Access of UE and trigger the random reason accessing;
At selected Random Access, be non-competing random access, described random access triggers former because carry out community while switching, and determines that the positional information of described UE is: cell edge position.
The network equipment that the invention provides a kind of definite UE positional information, comprising:
Path loss thresholding determining unit, determines that UE enters the path loss thresholding PL of cell edge
tH;
Grouping thresholding determining unit, for determining and PL
tHthe grouping thresholding matching
and send to each UE in this community, described in
path loss benchmark while accessing at random for initiate competition as UE, UE selects lead code in different grouping while determining that according to comparative result initiating competition accesses at random;
Random Access acquiring unit, at UE initiating random access procedure, obtains the selected Random Access of UE;
Lead code acquiring unit, for when selected Random Access accesses for competition is random, selected lead code while obtaining the random access of UE initiation competition;
Positional information determining unit, for according to the grouping under the selected lead code of described UE, determines the positional information of described UE.
The present invention also provides the network equipment of another kind for UE carries out parameter configuration, comprising:
Random access relevant information acquiring unit, at UE initiating random access procedure, obtains the selected Random Access of UE and accesses at random and trigger reason;
Positional information determining unit, for being non-competing random access at selected Random Access, described random access triggers former because carry out community while switching, and determines that the positional information of described UE is: cell edge position.
Utilize the present invention to determine UE positional information and carry out method and the network equipment of parameter configuration for UE, there is following beneficial effect: solved in current system to connect to set up at RRC at UE and carried out before measurement of correlation reports, the problem that the positional information of UE cannot be known, pass through the present invention program, can reduce RRC does not set up in situation and blindly to carry out parameter configuration, cause relevant parameter to reshuffle the space interface signaling expense that rate height brings, the hydraulic performance decline that alleviation causes because parameter configuration is improper, can further improve resource utilization ratio, and further guarantee user's service quality.
Accompanying drawing explanation
Fig. 1 is the method flow diagram of definite UE positional information provided by the invention;
Fig. 2 is according to the positional information method flow diagram of determining non-competing random access UE in the embodiment of the present invention one;
Fig. 3 is according to the positional information method flow diagram of determining competition/non-competing random access UE in the embodiment of the present invention one;
Fig. 4 is according to carry out the method flow diagram of parameter configuration in the embodiment of the present invention two for UE;
Fig. 5 is according to the network equipment structure chart of determining the positional information of competition/non-competing random access UE in the embodiment of the present invention three.
Embodiment
The method and the network equipment that below in conjunction with drawings and Examples, to definite UE positional information provided by the invention and for UE, carry out parameter configuration, illustrate in greater detail.
LTE system is supported random access and the two kinds of modes of the random access based on non-competing based on competition, and random access will be triggered by following 5 kinds of reasons: the initial access that 1) user is entered by the state IDLE that leaves unused; 2) the initial access of initiating after Radio Link Failure; 3) the random access of carrying out in Target cell when switch community; 4) downlink data that RRC connects under RRC_CONNECTED state arrives; 5) upstream data that RRC connects under RRC_CONNECTED state arrives.
Wherein, the random access that above-mentioned 5 kinds of reasons trigger can adopt the Random Access based on competition to connect.But only have reason 3) (community switching), reason 4) (arrival of RRC connection status downlink data) two kinds of reasons can trigger non-competing random access.For the random access based on competition, random access procedure is initiated by end side, and terminal can be selected random access resource in the set of available random access-in resource, and then the competition solution (Contention Resolution) by network side realizes; For non-competing random access, random access procedure is initiated by network side, be that base station directly informs that terminal selects which random access resource combination (comprising non-competing lead code preamble index, resource location set etc.), therefore do not need the network side solution that conflicts.
In the UE initiating random access procedure of Zhe of the present invention community, obtain random access relevant information; And according to determining the positional information of described UE in described random access relevant information.In the UE initiating random access procedure of Zhe community, the acquisition of informations such as random access request that can send according to UE access relevant information at random.Due to the random access triggering due to different reasons under different random access way, can reflect the positional information of UE to a certain extent, as under non-competing Random Access, due to reason 3) while triggering non-competing random access, can determine that UE is in cell edge position etc.Therefore, the present invention utilizes relevant information in UE random access procedure, can extract some parameters relevant to UE positional information, and then the positional information of definite UE.And owing to setting up before RRC connects terminal Yu Zhe community, inevitablely first access at random.Like this, according to method of the present invention, in the random access procedure before RRC connects, just can obtain the positional information of UE more accurately.Therefore, while being user terminal configuration relevant parameter in base station when setting up RRC connection, just can configure more accurately the parameter relevant to UE positional information, thereby avoid the required RRC of parameter modification to connect the signaling consumption that reprovision brings.
In the embodiment of the present invention one, a kind of method of definite user terminal UE positional information is provided, as shown in Figure 1, comprising:
Step S101, in UE initiating random access procedure, obtains random access relevant information, and the random access relevant information here can comprise: the selected Random Access of UE, trigger the reason of random access and access at random the information such as selected lead code;
Step S102, when selected Random Access is non-competing random access, triggers reason execution step S103 or step S104 according to random access.
Difference based on existing Random Access and the random access of triggering reason, for non-competing Random Access, it only may be because two kinds of reasons trigger, and the downlink data under RRC connection status arrives and community switching.In addition, according to the regulation of LTE standard, base station side can be distinguished Random Access and distinguish above-mentioned two kinds of reasons under non-competing Random Access according to random access relevant information, therefore, preferably, as shown in Figure 1, in the present embodiment step S104, determine that random access triggers former because carry out community while switching, determine that the positional information of described UE is: cell edge position.Even the non-competing random access of UE is triggered by switching to this community from other community, and when RRC connection is set up, the customer position information of direct initialization current UE is Cell Edge User.
Step S103, determines that when random access triggers the former because downlink data under RRC connection status and arrives, the positional information of the described UE determining before keeping is constant.
Preferably, in the present embodiment, UEYu Zhe sets up community after RRC connection, also comprises: according to UE, meet and enter the measurement report reporting after cell edge condition, determine that the positional information of described UE is: cell edge position; Or meet and leave the measurement report reporting after cell edge condition according to UE, when acquisition UE leaves all adjacent cells edge, determine that the positional information of UE is: center of housing estate position.
If the non-competing random access of UE is to arrive institute by the downlink data of UE under RRC connection status to trigger, according to the regulation of current LTE standard, the inevitable RRC that set up in a period of time Nei Ben community before of this UE connects, and does not switch.Consider that the modes such as this kind of scene lower network side may report by the A3 affair of connection status obtain the positional information of comparatively accurate current UE, therefore now retain the original positional information of this UE.
For the random access based on competition, can not simply according to Random Access and random access, trigger the positional information that reason is determined UE, need to further determine further combined with the random access relevant information in UE random access procedure.For the random access procedure based on competition, UE exists a preamble to divide the problem of group selection during lead code preamble in sending random access request, at present the LTE standard of R8 and R9 version regulation:
If there is the preamble resource of the second grouping group B in present access subzone, the data volume that current access UE need to transmit (band transmitted data amount+MAC (media access control) header overhead+MAC Control Element) is greater than setting threshold, and the path loss of current UE meets
uE selects the lead code preamble in random access the second grouping group B to complete random access; Otherwise complete random access with the lead code preamble in the first grouping groug A.
Wherein:
computing formula in:
--P
cMAX: the transmitting power of the UE of configuration, it depends on the maximum transmission power grade of UE and the maximum transmission power of the UE that this community allows;
--preambleInitialReceivedTargetPower is the relevant cell-level parameter of random access, relevant with community covering scene, is known quantity;
--deltaPreambleMsg3 is the relevant cell-level parameter of random access, is known quantity;
--messagePowerOffsetGroupB is the relevant cell-level parameter of random access the second grouping group B selecting paths loss condition.
Based on this, the present invention is according to the thresholding setting of the A3 event for ICIC, utilize UE to meet A3 event and enter and/or leave the power space reporting after condition and report PHR information, the PHR information of the UE that in this community, the built vertical RRC of statistics connects obtains the path loss thresholding PL that user enters cell edge
tH, when UE is accessed at random, determine the grouping thresholding that Preamble divides into groups
enter the PL of cell edge with user
tHmatch, so UE determines the grouping thresholding of Preamble grouping while accessing at random
corresponding to the thresholding that is judged to be center of housing estate position user.
Provide below according in the embodiment of the present invention two for the method for determining position information of the UE of the random access of competition, as shown in Figure 2, before obtaining random access relevant information, carry out before UE positional information determines, also comprising:
Step S001, obtains setting-up time section T
snei Zhe community is specified UE to meet to enter the power space reporting after cell edge condition and is reported PHR;
UE is satisfied enters cell edge condition, is specially and meets A3 event entry condition in LTE standard.Report On Leave is set to the A3 event of true, illustrates that this measurement reported event configuration is for distinguishing center of housing estate/marginal position of UE.If meet the entry condition of A3 event, illustrate that this UE enters the edge of community; If meet the condition of leaving of A3 event, illustrate that this UE leaves the edge of this community and corresponding adjacent cell.But it is noted that meeting the condition of leaving only means that UE meets the edge that leaves this community and respective cell, can not just judge that this UE enters the central area of this community accordingly; Only have and for the A3 event of these community adjacent cells all with it, all meet while leaving condition as this UE, just mean that this UE enters center of housing estate region.Report On Leave is set to false, and this measurement reported event configuration is construed as for handover.
The condition of leaving of considering above-mentioned certain community can not directly be judged the center/marginal position of community, only considers that the A3 affair that meets entry condition reports in the embodiment of the present invention.
The present embodiment Zhong Zhe community specifies UE to meet the UE that A3 event entry condition and A3 event are left the equal reporting measurement reports of condition, allly configured the UE that A3 affair that Report On Leave is set to " true " configures the community in.Consider that the A3 that is set to " false " as Report On Leave measures configuration and switches for community, the measurement that meets entry condition reports the inevitable cell edge that is also positioned at, this community specifies UE also can leave for meeting A3 event entry condition and A3 event the UE of the equal reporting measurement reports of condition, and only meets the UE of A3 event entry condition reporting measurement reports.Further comprise other UE that has configured the configuration of A3 affair.
Step S002, the PHR that specifies UE to report according to each, determines respectively the path loss corresponding with PHR;
If base station receives UE, meet the PHR reporting after A3 event entry condition, based on this PHR information, calculate the information on path loss of this UE, until this timing statistics section T
still end or UE are judged as Cell Center User.
Introduce the method for the information on path loss of the PHR information acquisition UE that base station reports by UE below:
LTE standard regulation, UE can be to the information on path loss of the direct report of user terminal of network side, but the PHR information that in fact this information on path loss can report by UE calculates.The PHR information that UE reports is as follows:
PH(i)＝P
CMAX-{10log
10(M
PUSCH(i))+P
O_PUSCH(j)+α(j)·PL+Δ
TF(i)+f(i)}[dB]
Wherein, the implication of each parameter and parameter source are as follows:
P
cMAX: the transmitting power of the UE of configuration, it depends on the maximum transmission power grade of UE and the maximum transmission power of the UE that this community allows;
M
pUSCH: this transmission bandwidth of base station scheduling UE, passes through uplink scheduling signaling UE by base station;
P
o_PUSCH(j): base station configures the uplink power control parameter to terminal, the exclusive parameter two parts of the normalized parameter that Ta You community is exclusive and UE form, and by the rrc layer of base station, configure to UE;
α (j): road loss compensation factor, is configured to UE by the rrc layer of base station;
PL: path loss, by UE, passed through to measure the received power of descending common reference symbol, and obtain after level and smooth;
Δ
tF(i): for compensating the compensating factor of MCS (Modulation and Coding Scheme), depend on rrc layer parameter and the selected MCS grade of base station uplink scheduling of base station;
F (i): the adjustment step-length of close-loop power control, the TPC order issuing by base station calculates.
Wherein, i is the current subframe numbers that reports time point; The value of j is 0,1,2, and wherein j=0 represents that current power control is for semi-continuous scheduling transmission; J=1 represents that current power control parameters is for initial transmission or the re-transmission of dynamic dispatching; J=2 represents that current power control parameters is for random access transmission.
From implication and the source of above each symbol, except path loss parameter PL, other parameters are all known for base station side.Therefore, by the PHR information reporting, in conjunction with the timing relationship of uplink scheduling, just can determine the information on path loss of UE, wherein the timing relationship of uplink scheduling is for determining total i, the j of formula:
Step S003, according to the statistics of the different path loss frequencies of occurrences in described setting-up time section, determines that UE enters the path loss thresholding PL of cell edge
tH.
In the present embodiment, determine that user enters the path loss thresholding of cell edge, specifically comprise:
According to described setting-up time section T
sthe statistics of the interior different path loss frequencies of occurrences, the added up different path loss frequencies of occurrences are sorted according to size, and cumulative distribution function CDF (the Cummulative Distribution Function) curve of pathway loss frequency of occurrences distribution; Determine on CDF curve, set cumulative distribution probability x% (as, 95% or 100%) to locate corresponding path loss be described PL
tH, to being not more than PL
tHthe frequency of occurrences of path loss accumulate, the cumulative distribution probability obtaining is x%.
Step S004, determines and described PL
tHthe grouping thresholding matching
and send to each UE in this community, described in
path loss benchmark while accessing at random for initiate competition as UE, UE selects lead code in different grouping while determining that according to comparative result initiating competition accesses at random.As LTE standard regulation, the current path loss of UE is less than
time, select lead code in the second grouping to initiate the random access of competition.
Preamble grouping in order to guarantee that above-mentioned random access grouping thresholding is distinguished, can match with the center of housing estate/edge customer differentiation mode based on A3 event, above-mentioned
with in the present invention, based on A3 event, enter the definite PL of the condition of cell edge
tHmust need to meet some requirements.Due to PL
tHto be obtained by the UE path loss statistics that enters cell edge, so PL
tHreflected that user enters the path loss thresholding of cell edge.Can think, if path loss is greater than this PL
tH, UE enters cell edge, if path loss is less than this PL
tH, UE should enter center of housing estate.Because UE is when Preamble divides group selection, if path loss is less than
select Preamble in the second grouping.Therefore determine the grouping thresholding mating with it
make it as the path loss thresholding of center of housing estate position.
Determine and described PL
tHthe grouping thresholding matching
specifically comprise: determine and described PL
tHdifference described in the parameter of setting range is
that is:
Preferably, can get this and make PL
tHdirectly conduct
or, get and be less than PL
tHparameter in setting range is
make to determine as far as possible
approach the path loss thresholding that enters center of housing estate in reality.
UE determines grouping thresholding
time, P
cMAX, preambleInitialReceivedTargetPower, deltaPreambleMsg3 be known quantity, the messagePowerOffsetGroupB that in the present embodiment, network side is broadcast to UE by adjustment adjusts the grouping thresholding of UE
the random access grouping group B selecting paths loss conditional parameter messagePowerOffsetGroupB that meets the path loss condition of A3 event center of housing estate/edge customer differentiation is:
messagePowerOffsetGroupB＝
P
CMAX-preambleInitialReceivedTargetPower-deltaPreambleMsg3-f(PL
TH)
According to the enforcement of such scheme, in the time of just guaranteeing above-mentioned random access, the selection of Preamble grouping can match with the center of housing estate/edge customer differentiation mode based on A3 event: if now certain UE has selected random access grouping group B in random access procedure, mean that this UE is positioned at center of housing estate.
Step S201, in UE initiating random access procedure, obtains random access relevant information, and the random access relevant information here can comprise: the selected Random Access of UE, trigger the reason of random access and access at random the information such as selected lead code.As shown in Figure 2, in the present embodiment, after obtaining random access relevant information, according to Random Access, determine execution step S202 or step S205, when step S202 is defined as non-competing random access, according to triggering reason, determine execution step S203 or step S204.While determining the selected Random Access of UE for the random access of competition according to random access relevant information in step S205, carry out following steps S206, when selected Random Access accesses for competition is random, selected lead code preamble while obtaining the random access of UE initiation competition;
Step S207, according to the grouping under the selected lead code preamble of UE, determines the positional information of UE.UE transmitted data amount when initiating the random access of competition is greater than described in setting threshold and path loss is less than
time, select lead code in the second grouping, otherwise select lead code in the first grouping; Particularly, step S207 comprises:
Step S207a, judges whether the grouping under the selected lead code preamble of UE is the second grouping, if so, performs step S207b, otherwise, execution step S207c;
Step S207b, illustrates that the path loss of this UE will be less than
the positional information of determining UE is: center of housing estate position;
Step S207c, setting in the nearest time period, whether RRC connection was set up in Zhe community, if so, performs step S207d according to this UE, otherwise, execution step S207e;
Step S207d, as setting nearest time period T, (T >=0, if T=0ms, this condition is by The Insatiable) in, UEZhe set up community RRC and connected, and in this time period T, was not switched to other community, and before keeping, the positional information of definite UE is constant;
Step S207e, determines that the positional information of UE is: cell edge position.
In the embodiment of the present invention, also comprise according to UEYu Zhe community and setting up after RRC connection, determine the positional information of UE (report and determine UE position according to A3 affair) meeting to enter cell edge condition and to enter the measurement report reporting after center of housing estate condition, and the positional information of determined UE before upgrading.
During concrete enforcement, the said method of the method for embodiment mono-and embodiment bis-can be combined to use, according to random access relevant information, can under the random access of competition and non-competing random access, determine UE positional information.Specifically see the flow process of Fig. 2.
Because terminal Yu Zhe community is set up before RRC connects, inevitablely first access at random.By the enforcement of such scheme of the present invention, can just obtain at UE the rough location information of UE in connecting, thereby can be faster for UE provides the related service that suits self, the optimization that also can better guarantee the technology such as network side ICIC is implemented, thereby can improve the overall performance of system, reduce signaling consumption, improve power system capacity.
In the embodiment of the present invention three, on the method basis of the definite UE positional information providing at embodiment mono-and embodiment bis-, provide a kind of for UE carries out method for parameter configuration, as shown in Figure 3, comprising:
Step S301, determines need to be the UE configuration parameter relevant to UE positional information, and described UE is not while reporting the measurement report for definite positional information, obtains random access relevant information;
Step S302, according to determining the positional information of described UE in described random access relevant information;
Step S303 is that UE carries out parameter configuration according to determined positional information.
In step S301, random access relevant information is specifically as follows the selected Random Access of UE and triggers the reason of random access, in step S302, the positional information of UE determines, specifically can adopt the method for determining position information while providing non-competing random access in embodiment mono-.Random access relevant information in step S301 is specifically as follows Random Access and the selected preamble of random access, in step S302, the positional information of UE is determined, the method for determining position information in the time of specifically can adopting enforcement two competitions that provide to access at random.Preferably, random access information specifically comprises Random Access, trigger the reason of random access and preamble that random access is selected etc., in conjunction with the embodiments one and the method that provides of embodiment bis-, according to random access relevant information, determine UE positional information:
(a), if UE adopts non-competing Random Access, according to the triggering reason of random access, carry out the positional information of initialization user terminal:
(a1) if this non-competing random access is switched and to be triggered due to community, the positional information of initialization UE is Cell Edge User;
(a2) if this non-competing random access triggers because the downlink data under RRC connection status arrives, the original positional information that maintains UE is constant.
(b), if UE adopts the Random Access based on competition, need to determine in advance grouping thresholding according to method in embodiment mono-
and notify UE, further combined with the selected random access Preamble grouping information of UE, determine the positional information of (initialization) terminal:
(b1) if UE selects the Preamble in random access Preamble grouping group B to access at random, the positional information of initialization UE is Cell Center User;
(b2) if UE selects random access Preamble grouping group A to complete random access, further according to this UE, within a period of time recently, whether the positional information that RRC connects to come initialization UE was set up in Zhe community:
If in predefined time T (T >=0), UEZhe set up community RRC and connected,
Maintain original UE positional information constant;
Otherwise for other situation, the positional information of initialization UE is Cell Edge User.
Just can determine/initialization position information of user's terminal at the beginning of RRC connect to set up in the present embodiment, therefore for the UE that newly sets up RRC connection, the Random Access and the random access that according to it, at RRC, connect before setting up trigger reason, and the selected random access Preamble of UE grouping information is carried out the positional information of initialization user terminal as stated above in competition random access procedure, in step S303, the parameter relevant to UE positional information of configuration is specially, described UEYu Zhe sets up community the parameter relevant to UE positional information configuring when RRC connects.Can connect and set up or RRC connects reprovision related signaling and completes the parameter configuration relevant to customer position information by RRC afterwards, simultaneously can be immediately for UE provides the service that positional information is relevant, thereby reach, save signaling consumption, improve resource utilization, guarantee the object of user QoS.
In the embodiment of the present invention four, a kind of network equipment of definite UE positional information is also provided, as shown in Figure 4, this network equipment comprises: path loss thresholding determining unit 401, determine that UE enters the path loss thresholding PL of cell edge
tH; Grouping thresholding determining unit 402, for determining and PL
tHthe grouping thresholding matching
and send to each UE in this community, described in
path loss benchmark while accessing at random for initiate competition as UE, UE selects lead code in different grouping while determining that according to comparative result initiating competition accesses at random; Random Access acquiring unit 403, at UE initiating random access procedure, obtains the selected Random Access of UE; Lead code acquiring unit 404, for when selected Random Access accesses for competition is random, selected lead code while obtaining the random access of UE initiation competition; Positional information determining unit 405, for according to the grouping under the selected lead code of described UE, determines the positional information of described UE.
Preferably, the thresholding of path loss described in the present embodiment determining unit 401, specifically comprises: PHR acquiring unit 401a, in setting-up time section, obtains this community and specifies UE to meet to enter the power space reporting after cell edge condition and report PHR; Path loss determining unit 401b, for the PHR that specifies UE to report according to each, determines respectively the path loss corresponding with PHR; Determining unit 401c, for according to the statistics of the different path loss frequencies of occurrences in described setting-up time section, determines that UE enters the path loss thresholding PL of cell edge
tH.Determining unit specifically comprises: CDF curve determining unit 401c1, be used for according to the statistics of the different path loss frequencies of occurrences in described setting-up time section, the added up different path loss frequencies of occurrences are sorted according to size, and the cumulative distribution function CDF curve of pathway loss frequency of occurrences distribution; Occurrence determining unit 401c2, for determining that setting path loss corresponding to cumulative distribution probability x% place on described CDF curve is described PL
tH, preferably, this setting cumulative distribution probability is 95%.
The thresholding determining unit 402 of dividing into groups in the present embodiment is specifically for determining and described PL
tHdifference described in the parameter of setting range is
uE transmitted data amount when initiating the random access of competition is greater than described in setting threshold and path loss is less than
time, select lead code in the second grouping, otherwise select lead code in the first grouping; According to the grouping under the selected lead code of described UE, positional information determining unit 405 specifically comprises: the first center determining unit 405a, for determine under the selected lead code of described UE be grouped into the second grouping time, determine that the positional information of UE is: center of housing estate position; Continue determining unit 405b, for determine under the selected lead code of described UE be grouped into the first grouping time, according to this UE, whether RRC was set up in Zhe community connects setting in the nearest time period, determines the positional information of described UE.Described continuation determining unit 405b specifically comprises: primary importance Information preservation unit 405b1, and for setting in the nearest time period, described UEZhe set up community RRC and connected, and the positional information of the described UE determining before keeping is constant; The first edge position determination unit 405b2, is setting in the nearest time period for determining, when described UEZhe did not set up community RRC connection, determines that the positional information of UE is: cell edge position.
In the present embodiment, this network equipment also comprises: random access triggers reason acquiring unit 406, for when selected Random Access is non-competing random access, obtains random access and triggers reason; The second edge position determination unit 407, former because carry out community while switching for triggering in described random access, determine that the positional information of described UE is: cell edge position.
Above-mentioned network equipment can be determined UE position before connecting foundation at RRC, in order to realize after RRC connects foundation, determine more accurately UE positional information, preferably, also comprise: the 3rd marginal position determining unit 408, for UEYu Zhe community, set up after RRC connection, according to UE, meet and enter the measurement report reporting after cell edge condition, determine that the positional information of UE is: cell edge position; The second center determining unit 409, sets up after RRC connection for UEYu Zhe community, according to UE, meets and leaves the measurement report reporting after cell edge condition, when acquisition UE leaves all adjacent cells edge, determines that the positional information of UE is: center of housing estate position.Second place Information preservation unit 410, while arriving because of the downlink data under RRC connection status for determining that random access triggering is former, before keeping, the positional information of definite described UE is constant.
In the present embodiment, in above-mentioned network equipment, use satisfied enter cell edge condition be specially in LTE standard, stipulate meet A3 event entry condition; This community specifies UE to be specially, and meets the UE that A3 event entry condition and A3 event are left the equal reporting measurement reports of condition; Or for meeting A3 event entry condition and A3 event is left the UE of the equal reporting measurement reports of condition, and only meet the UE of A3 event entry condition reporting measurement reports.
A kind of network equipment of definite UE positional information is also provided in the embodiment of the present invention, as shown in Figure 5, comprise: access at random relevant information acquiring unit 501, at UE initiating random access procedure, obtain the selected Random Access of UE and random access triggering reason; The first edge position determination unit 502, for being non-competing random access at selected Random Access, described random access triggers former because carry out community while switching, and determines that the positional information of described UE is: cell edge position.Preferably, also comprise the second edge position determination unit 503, for UEYu Zhe community, set up after RRC connection, according to UE, meet and enter the measurement report reporting after cell edge condition, determine that the positional information of UE is: cell edge position; Center determining unit 504, sets up after RRC connection for UEYu Zhe community, according to UE, meets and leaves the measurement report reporting after cell edge condition, when acquisition UE leaves all adjacent cells edge, determines that the positional information of UE is: center of housing estate position.Described positional information determining unit also comprises: positional information holding unit 505, being used for is non-competing random access at described Random Access, when described random access triggers the former because downlink data under RRC connection status and arrives, the positional information of the described UE determining before keeping is constant.Thereby can carry out positional information to the UE of non-competing random access determines.
In the embodiment of the present invention five, also provide a kind of and carry out the network equipment of parameter configuration for UE, specifically for determining, need to be the UE configuration parameter relevant to UE positional information, and when described UE does not report for the measurement report of definite positional information, according to random access relevant information, determine UE positional information.In the present embodiment, network equipment can adopt disclosed structure in embodiment tetra-to determine the positional information of UE, is not described in detail here.
The random access relevant information determine/initialization position information of user's terminal of the combination UE providing in the above embodiment of the present invention and for UE carries out method and the device of parameter configuration, solved in current communication system UE carry out measurement of correlation report before the problem that cannot know of position information of user's terminal.Pass through above-described embodiment, can minimizing system carry out relevant parameter and reshuffle the space interface signaling expense of bringing, the hydraulic performance decline that alleviation causes because parameter configuration is improper, compare with existing method of determining position information and method for parameter configuration, the present invention can further improve resource utilization ratio, and further guarantees user's service quality.Need explanation, although the above embodiment of the present invention for LTE system, its thinking can be generalized in other similar systems.
Obviously, those skilled in the art can carry out various changes and modification and not depart from the spirit and scope of the present invention the present invention.Like this, if within of the present invention these are revised and modification belongs to the scope of the claims in the present invention and equivalent technologies thereof, the present invention is also intended to comprise these changes and modification interior.
Claims (17)
1. a method for definite user terminal UE positional information, is characterized in that, comprising:
Determine that UE enters the path loss thresholding PL of cell edge
tH;
Determine and described PL
tHdifference in the parameter of setting range, be grouping thresholding
and send to each UE in this community, described in
path loss benchmark when initiating the random access of competition as UE, described UE transmitted data amount when initiating the random access of competition is greater than described in setting threshold and path loss is less than
time, select lead code in the second grouping, otherwise select lead code in the first grouping;
In UE initiating random access procedure, obtain the selected Random Access of UE;
When selected Random Access accesses for competition is random, selected lead code while obtaining the random access of UE initiation competition;
If be grouped into the second grouping under the selected lead code of described UE, determine that the positional information of UE is: center of housing estate position; If be grouped into the first grouping under the selected lead code of UE, and setting in the nearest time period, described UEZhe set up community RRC and connected, and the positional information of the described UE determining before keeping is constant, otherwise, determine that the positional information of UE is: cell edge position.
2. the method for claim 1, is characterized in that, described definite UE enters the path loss thresholding PL of cell edge
tH, specifically comprise:
In setting-up time section, obtain this community and specify UE to meet to enter the power space reporting after cell edge condition and report PHR;
The PHR that specifies UE to report according to each, determines respectively the path loss corresponding with PHR;
According to the statistics of the different path loss frequencies of occurrences in described setting-up time section, determine that UE enters the path loss thresholding PL of cell edge
tH.
3. method as claimed in claim 2, is characterized in that, described UE meets and to enter cell edge condition and be specially UE and meet the A3 event entry condition of stipulating in LTE standard;
Described this community specifies UE to be specially, and meets the UE that A3 event entry condition and A3 event are left the equal reporting measurement reports of condition; Or be
Meet A3 event entry condition and A3 event and leave the UE of the equal reporting measurement reports of condition, and only meet the UE of A3 event entry condition reporting measurement reports.
4. method as claimed in claim 2, is characterized in that, according to the statistics of the different path loss frequencies of occurrences in setting-up time section, determines described PL
tH, specifically comprise:
According to the statistics of the different path loss frequencies of occurrences in described setting-up time section, the added up different path loss frequencies of occurrences are sorted according to size, and the cumulative distribution function CDF curve of pathway loss frequency of occurrences distribution;
Determine that on described CDF curve, setting path loss corresponding to cumulative distribution probability x% place is described PL
tH.
5. the method for claim 1, is characterized in that, also comprises:
When selected Random Access is non-competing random access, obtains random access and trigger reason;
Described random access triggers former because carry out community while switching, and determines that the positional information of described UE is: cell edge position.
6. method as claimed in claim 5, is characterized in that, UEYu Zhe sets up community after RRC connection, also comprises:
According to UE, meet and enter the measurement report reporting after cell edge condition, determine that the positional information of described UE is: cell edge position;
Or meet and leave the measurement report reporting after cell edge condition according to UE, when acquisition UE leaves all adjacent cells edge, determine that the positional information of UE is: center of housing estate position.
7. the method as described in claim 5 or 6, is characterized in that,
When described Random Access is non-competing random access, obtains random access and trigger reason;
When described random access triggers the former because downlink data under RRC connection status and arrives, the positional information of the described UE determining before keeping is constant.
8. for UE carries out a method for parameter configuration, it is characterized in that, comprising:
Determine that UE enters the path loss thresholding PL of cell edge
tH;
Determine and described PL
tHdifference in the parameter of setting range, be grouping thresholding
and send to each UE in this community, described in
path loss benchmark when initiating the random access of competition as UE, described UE transmitted data amount when initiating the random access of competition is greater than described in setting threshold and path loss is less than
time, select lead code in the second grouping, otherwise select lead code in the first grouping;
Determine need to be the UE configuration parameter relevant to UE positional information, and described UE do not report when determining the measurement report of positional information, obtain UE selected Random Access when accessing at random;
When selected Random Access accesses for competition is random, selected lead code while obtaining the random access of UE initiation competition;
If be grouped into the second grouping under the selected lead code of UE, determine that the positional information of UE is: center of housing estate position; If be grouped into the first grouping under the selected lead code of UE, and setting in the nearest time period, described UEZhe set up community RRC and connected, and the positional information of the described UE determining before keeping is constant, otherwise, determine that the positional information of UE is: cell edge position;
According to determined positional information, be that UE carries out parameter configuration.
9. method as claimed in claim 8, is characterized in that, described definite UE enters the path loss thresholding PL of cell edge
tH, specifically comprise:
In setting-up time section, obtain this community and specify the satisfied measurement report reporting after cell edge condition that enters of UE;
Power space in the measurement report reporting according to each appointment UE reports PHR, determines respectively the path loss corresponding with PHR;
According to the statistics of the different path loss frequencies of occurrences in described setting-up time section, determine that UE enters the path loss thresholding PL of cell edge
tH.
10. a network equipment for definite UE positional information, is characterized in that, comprising:
Path loss thresholding determining unit, determines that UE enters the path loss thresholding PL of cell edge
tH;
Grouping thresholding determining unit, for determining and described PL
tHdifference in the parameter of setting range, be grouping thresholding
and send to each UE in this community, described in
path loss benchmark when initiating the random access of competition as UE, described UE transmitted data amount when initiating the random access of competition is greater than described in setting threshold and path loss is less than
time, select lead code in the second grouping, otherwise select lead code in the first grouping;
Random Access acquiring unit, at UE initiating random access procedure, obtains the selected Random Access of UE;
Lead code acquiring unit, for when selected Random Access accesses for competition is random, selected lead code while obtaining the random access of UE initiation competition;
Positional information determining unit, for according to the grouping under the selected lead code of described UE, determines the positional information of described UE;
Described positional information determining unit specifically comprises:
The first center determining unit, for determine under the selected lead code of described UE be grouped into the second grouping time, determine that the positional information of UE is: center of housing estate position;
Continue determining unit, for determine under the selected lead code of described UE be grouped into the first grouping time, according to this UE, whether RRC was set up in Zhe community connects setting in the nearest time period, determines the positional information of described UE;
Described continuation determining unit specifically comprises:
Primary importance Information preservation unit, for setting in the nearest time period, described UEZhe set up community RRC and connected, and the positional information of the described UE determining before keeping is constant;
The first edge position determination unit, is setting in the nearest time period for determining, when described UEZhe did not set up community RRC connection, determines that the positional information of UE is: cell edge position.
11. equipment as claimed in claim 10, is characterized in that, described path loss thresholding determining unit, specifically comprises:
PHR acquiring unit, in setting-up time section, obtains this community and specifies UE to meet to enter the power space reporting after cell edge condition and report PHR;
Path loss determining unit, for the PHR that specifies UE to report according to each, determines respectively the path loss corresponding with PHR;
Determining unit, for according to the statistics of the different path loss frequencies of occurrences in described setting-up time section, determines that UE enters the path loss thresholding PL of cell edge
tH.
12. equipment as claimed in claim 11, is characterized in that, described determining unit specifically comprises:
CDF curve determining unit, be used for according to the statistics of the different path loss frequencies of occurrences in described setting-up time section, the added up different path loss frequencies of occurrences are sorted according to size, and the cumulative distribution function CDF curve of pathway loss frequency of occurrences distribution;
Occurrence determining unit, for determining that setting path loss corresponding to cumulative distribution probability x% place on described CDF curve is described PL
tH.
13. equipment as claimed in claim 10, is characterized in that, also comprise:
Random access triggers reason acquiring unit, for when selected Random Access is non-competing random access, obtains random access and triggers reason;
The second edge position determination unit, former because carry out community while switching for triggering in described random access, determine that the positional information of described UE is: cell edge position.
14. equipment as claimed in claim 10, is characterized in that, also comprise:
The 3rd marginal position determining unit, sets up after RRC connection for UEYu Zhe community, according to UE, meets and enters the measurement report reporting after cell edge condition, determines that the positional information of UE is: cell edge position;
The second center determining unit, sets up after RRC connection for UEYu Zhe community, according to UE, meets and leaves the measurement report reporting after cell edge condition, when acquisition UE leaves all adjacent cells edge, determines that the positional information of UE is: center of housing estate position.
15. equipment as described in claim 13 or 14, is characterized in that, also comprise:
Second place Information preservation unit, while arriving because of the downlink data under RRC connection status for determining that random access triggering is former, before keeping, the positional information of definite described UE is constant.
16. 1 kinds for UE carries out the network equipment of parameter configuration, it is characterized in that, comprising:
Path loss thresholding determining unit, for determining that UE enters the path loss thresholding PL of cell edge
tH;
Grouping thresholding determining unit, for determining and described PL
tHdifference in the parameter of setting range, be grouping thresholding
and send to each UE in this community, described in
path loss benchmark when initiating the random access of competition as UE, described UE transmitted data amount when initiating the random access of competition is greater than described in setting threshold and path loss is less than
time, select lead code in the second grouping, otherwise select lead code in the first grouping;
Random Access acquiring unit, need to, for initiating random access but not setting up the UE that RRC connects, while configuring the parameter relevant to UE positional information, obtain UE selected Random Access when this random access for determining;
Lead code acquiring unit, when selected Random Access accesses for competition is random, selected lead code while obtaining the random access of UE initiation competition;
Positional information determining unit, if for second grouping that is grouped under the selected lead code of UE, determines that the positional information of UE is: center of housing estate position; If be grouped into the first grouping under the selected lead code of UE, and setting in the nearest time period, described UEZhe set up community RRC and connected, and the positional information of the described UE determining before keeping is constant, otherwise, determine that the positional information of UE is: cell edge position;
Parameter configuration unit, for being that UE carries out parameter configuration according to determined positional information.
17. equipment as claimed in claim 16, is characterized in that, also comprise:
Random access reason acquiring unit, for when selected Random Access is non-competing random access, obtains random access and triggers reason;
Marginal position determining unit, former because carry out community while switching for determining that described random access triggers, determine that the positional information of described UE is: cell edge position.
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| CN103249169B (en) * | 2012-02-03 | 2016-08-31 | 华为技术有限公司 | Method, base station and the subscriber equipment of transmission Stochastic accessing response message |
| EP3343998B1 (en) | 2012-11-02 | 2020-03-11 | Huawei Technologies Co., Ltd. | Method, base station, and user equipment for determining channel loss |
| US10433291B2 (en) * | 2016-02-26 | 2019-10-01 | Qualcomm Incorporated | Discovery reference signal transmission window detection and discovery reference signal measurement configuration |
| CN107333337B (en) * | 2017-08-02 | 2019-10-15 | 北京邮电大学 | A kind of accidental access method and device based on space grouping |
| CN110381578B (en) * | 2019-07-01 | 2021-09-24 | 京信网络系统股份有限公司 | User equipment positioning method and device, access network equipment and readable storage medium |
| CN112566193B (en) * | 2019-09-26 | 2022-06-14 | 华为技术有限公司 | Cell switching method and device |
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