CN101965058A - Method and device for carrier level cell selection - Google Patents
Method and device for carrier level cell selection Download PDFInfo
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- CN101965058A CN101965058A CN2009101089647A CN200910108964A CN101965058A CN 101965058 A CN101965058 A CN 101965058A CN 2009101089647 A CN2009101089647 A CN 2009101089647A CN 200910108964 A CN200910108964 A CN 200910108964A CN 101965058 A CN101965058 A CN 101965058A
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Abstract
The invention provides a method for carrier level cell selection, which comprises the following steps of: receiving a message carrying carrier parameters, wherein the carrier parameters comprise user equipment UE specific carrier cell selection receiving threshold offset Qrxlev min offset, CA and a cell selection receiving threshold Qrxlev min; if the UE resides on a non-grouped carrier, increasing the Qrxlev min corresponding to the non-grouped carrier according to the Qrxlev min offset, CA; acquiring a cell selection receiving level value Srxlev according to the increased Qrxev min, and performing the carrier level cell selection according to the Srxlev so as to make the cell selection receiving level value Srxlev of a UE-resided grouped carrier is greater that the Srxlev of the UE-resided non-grouped carrier and fulfill the aim of balanced load in an idle state under the condition of the same signal intensity.
Description
Technical field
The present invention relates to wireless communication technology field, be specifically related to a kind of method and apparatus of carrier wave level cell selecting.
Background technology
Mobile communication system has developed into the third generation, and for the spectrum efficiency and the user throughput of further raising system, LTE introduces carrier aggregation technology.Carrier aggregation is meant that UE can use a plurality of member carriers simultaneously, the carrier wave section that the UE that member carrier is LTE can insert, its carrier bandwidths is from 1.25M to 20M, each carrier wave has a synchronizing channel, a broadcast channel etc., each member carrier can be considered as a sub-district, can support user terminal to insert, and these a plurality of member carriers can be positioned under the same access network node, so just make the number of cells under same access network node sharply increase, for example, LTE R10 requires the bandwidth of maximum 100M, and LTE R8 system bandwidth maximum is 20M, needs 5 member carrier polymerizations at least, compare the single carrier under the same access network node, the number of sub-district has increased 5 times.
Load balancing mainly is to handle the business load maldistribution problem of a plurality of alien frequencies and different system.Load-balancing algorithm can be transferred to business the sub-district of low load by switching or carrier wave level sub-district gravity treatment judgement from the sub-district of high capacity.
After introducing carrier aggregation, if there are a plurality of carrier waves that can be resident a sub-district, each member carrier all has oneself independently synchronous channel SCH/broadcast channel BCH, the UE of LTE/LTE-A may reside on the carrier wave that any one can be resident, cause a large amount of UE to reside on the same carrier wave, obtain the Physical Random Access Channel PRACH resource of resident carrier wave by broadcast, if a large amount of UE reside on the same descending carrier, UE can transmit random access channel preamble RACHpreamble on the up-link carrier of correspondence, this can cause the conflict and the mis-behave of PRACH resource.
Summary of the invention
The subject matter that the embodiment of the invention will solve provides a kind of method and apparatus of carrier wave level cell selecting.
A kind of method of carrier wave level cell selecting comprises:
The message of carrier parameter is carried in reception, and described carrier parameter comprises user equipment (UE) specific carriers cell selecting threshold level bias Q
Rxlev min offset, CAWith cell selecting threshold level Q
Rxlev min
If UE resides on the non-grouping carrier wave, according to described Q
Rxlev min offset, CAIncrease the Q of non-grouping carrier wave correspondence
Rxlev min
According to the Q after increasing
Rxlev min, obtain the incoming level value Srxlev of cell selecting, and carry out carrier wave level cell selecting according to described Srxlev.
A kind of method of carrier wave level cell selecting comprises:
The message of carrier parameter is carried in transmission, and described carrier parameter comprises user equipment (UE) specific carriers cell selecting threshold level bias Q
Rxlev min offset, CAWith cell selecting threshold level Q
Rxlev min
So that UE is when residing on the non-grouping carrier wave, according to described Q
Rxlev min offset, CAIncrease the Q of non-grouping carrier wave correspondence
Rxlev minThereby, make UE according to the Q after increasing
Rxlev min, obtain the incoming level value Srxlev of cell selecting, and make UE carry out carrier wave level cell selecting according to described Srxlev.
A kind of carrier wave level cell selecting apparatus comprises:
Receiver module is used to receive the message of carrying carrier parameter, and described carrier parameter comprises user equipment (UE) specific carriers cell selecting threshold level bias Q
Rxlev min offset, CAWith cell selecting threshold level Q
Rxlev min
Processing module is used for if UE resides in non-grouping carrier wave, according to described Q
Rxlev min offset, CAIncrease the Q of non-grouping carrier wave correspondence
Rxlev min
Acquisition module is used for according to the Q after increasing
Rxlev min, the incoming level value Srxlev of acquisition cell selecting;
Select module, be used for and carry out carrier wave level cell selecting according to described Srxlev.
A kind of device of carrier wave level cell selecting comprises:
Sending module is used to send the message of carrying carrier parameter, and described carrier parameter comprises user equipment (UE) specific carriers cell selecting threshold level bias Q
Rxlev min offset, CAWith cell selecting threshold level Q
Rxlev minSo that UE is when residing on the non-grouping carrier wave, according to described Q
Rxlev min offset, CAIncrease the Q of non-grouping carrier wave correspondence
Rxlev minThereby, make UE according to the Q after increasing
Rxlev min, obtain the incoming level value Srxlev of cell selecting, and make UE carry out carrier wave level cell selecting according to described Srxlev.
By the message that carrier parameter is carried in reception, described carrier parameter comprises user equipment (UE) specific carriers cell selecting threshold level bias Q
Rxlevminoffset, CAWith cell selecting threshold level Q
RxlevminIf UE resides on the non-grouping carrier wave, according to described Q
Rxlevminoffset, CA, pass through Q
Rxlevminoffset, CAIncrease the Q of non-grouping carrier wave correspondence
RxlevminAccording to the Q after increasing
RxlevminObtain the incoming level value Srxlev of cell selecting, and carry out carrier wave level cell selecting according to described Srxlev, under identical signal strength condition, the sub-district that makes UE reside in the grouping carrier wave selects incoming level value Srxlev to reside in the Srxlev of non-grouping carrier wave greater than UE, thereby reaches the purpose of load balancing under the idle condition.
Description of drawings
In order to be illustrated more clearly in the technical scheme in the embodiment of the invention, the accompanying drawing of required use is briefly introduced in will describing embodiment below, apparently, accompanying drawing in describing below only is some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is the schematic flow sheet of the embodiment of the invention one carrier wave level cell selecting method;
Fig. 2 is the schematic flow sheet of embodiment of the invention nd carrier level cell selecting method;
Fig. 3 is the schematic flow sheet of the embodiment of the invention three carrier wave level cell selecting methods;
Fig. 4 is the schematic flow sheet of the embodiment of the invention four carrier wave level cell selecting methods;
Fig. 5 is the structural representation of the embodiment of the invention six carrier wave level cell selecting apparatus;
Fig. 6 is the structural representation of the embodiment of the invention seven another devices of carrier wave level cell selecting;
Fig. 7 is the structural representation of the another device of the embodiment of the invention eight carrier wave level cell selecting.
Embodiment
In order to make the purpose, technical solutions and advantages of the present invention clearer, the present invention is described in further detail below in conjunction with accompanying drawing, and obviously, described embodiment only is the present invention's part embodiment, rather than whole embodiment.Based on the embodiment among the present invention, those of ordinary skills belong to the scope of protection of the invention not making all other embodiment that obtained under the creative work prerequisite.
After UE selected a public land mobile network PLMN, it is resident that UE begins to seek proper cell, is called " cell selecting ", and the conditional request of persistent district meets cell selecting S criterion, i.e. Srxlev＞0 is specially:
Srxlev＝Q
rxlevmeas-(Q
rxlev?min+Q
rxlev?min?offest)-Pcompensation
| Srxlev | The incoming level value (dB) of cell selecting |
| Q rxlevmeas | The incoming level value (RSRP) of the current service cell of measuring. |
| Q rxlev?min | Incoming level threshold value (dBm) |
| ?Q rxlev?min?offest | The bias of incoming level threshold value |
| Pcompensation | Offset max (P EMAX-P UMAX，0)(dB) |
| P EMAX | The operable maximum transmission power of UE |
| P UMAX | According to the definite maximum radio frequency power output of UE power rank |
Wherein, Q
Rxlev min offsetBe meant that working as UE resides under the situation of visiting public land mobile network VPLMN, by increasing a difference for the incoming level thresholding, thereby allow UE can periodically search for the public land mobile network PLMN of higher priority, its main purpose is the table tennis selection that prevents between the PLMN.
UE resides in a suitable cell, begins to carry out cell reselection process, makes UE resident to a better sub-district.
For the sub-district gravity treatment of alien frequencies and different system mainly is absolute priority according to frequency;
Alien-frequency district for same frequency that satisfies the S criterion and same priority adopts the R criterion to sort, and this R criterion is as follows:
R
s＝Q
meas，s+Q
Hyst
R
n＝Q
meas，n-Q
offset
| Q meas | The incoming level value (RSRP) of sub-district |
| ?Q offset | The bias of sub-district |
R wherein
sThe ranking criteria of service carrier wave, R
nIf the ranking criteria of target carrier is R
nThe sub-district of UE reselection evaluation in the time greater than R
s, think that then UE can choose on the better candidate cell.Wherein, for same scene frequently, if R
nThe sub-district of UE reselection evaluation in the time less than R
s, Q then
OffsetCan equal the bias Q of Serving cell and adjacent sub-district
Offsets, nR
nThe sub-district of UE reselection evaluation in the time greater than R
s, Q then
OffsetCan equal 0.For alien frequencies scene, R
nThe sub-district of UE reselection evaluation in the time greater than R
s, this Q then
Offset tEqual Q
Offsets, n+ Q
OffsetfrequencyOtherwise Q
OffsetEqual Q
OffsetfrequencyIn other words, Q
OffsetEqual to serve the bias that adds upper frequency with the bias of adjacent sub-district.
Because present sub-district is resident and the parameter sub-district gravity treatment all is a cell-level parameter by system information broadcast, can receive this parameter for whole UE in the sub-district, for carrier aggregation scene, if there are a plurality of carrier waves that can be resident a sub-district, each member carrier all has independently SCH/BCH, the UE of LTE/LTE-A may reside on the carrier wave that any one can be resident, cause a large amount of UE to reside on the same carrier wave, obtain the PRACH resource of resident carrier wave by broadcast, if a large amount of UE reside on the same descending carrier, UE can transmit RACH on the up-link carrier of correspondence leading, and this can cause the conflict and the mis-behave of PRACH resource.
The embodiment of the invention provides the method and apparatus of the intercarrier load balancing under the carrier aggregation scene, below is elaborated respectively:
The method of embodiment one, a kind of carrier wave level cell selecting, flow process comprises as shown in Figure 1:
101, receive the message of carrying carrier parameter, described carrier parameter comprises user equipment (UE) specific carriers cell selecting threshold level bias Q
Rxlev min offset, CAWith cell selecting threshold level Q
Rxlev min
102, if UE resides on the non-grouping carrier wave, according to described Q
Rxlev min offset, CAIncrease the Q of non-grouping carrier wave correspondence
Rxlev min
103, according to the Q after increasing
Rxlev min, obtain the incoming level value Srxlev of cell selecting, and carry out carrier wave level cell selecting according to described Srxlev.
By the message that carrier parameter is carried in reception, described carrier parameter comprises user equipment (UE) specific carriers cell selecting threshold level bias Q
Rxlev min offset, CAWith cell selecting threshold level Q
Rxlev minIf UE resides on the non-grouping carrier wave, according to described Q
Rxlev min offset, CAIncrease the Q of non-grouping carrier wave correspondence
Rxlev minAccording to the Q after increasing
Rxlev min, obtain the incoming level value Srxlev of cell selecting, and carry out carrier wave level cell selecting according to described Srxlev.Under identical signal strength condition, the sub-district that makes UE reside in the grouping carrier wave selects incoming level value Srxlev to reside in the Srxlev of non-grouping carrier wave greater than UE, thereby reaches the purpose of load balancing under the idle condition.
The method of embodiment two, a kind of carrier wave level cell selecting, flow process comprises as shown in Figure 2:
201, receive the broadcast of carrying carrier parameter, this carrier parameter can comprise resident carrier number, member carrier information, the user equipment (UE) specific carriers cell selecting threshold level bias Q of permission UE
Rxtev min offset, CAWith cell selecting threshold level Q
Rxlev min
202, obtain the grouping carrier index according to user ID UE ID and the resident carrier number of described permission UE, with the described member carrier of described grouping carrier index correspondence grouping carrier wave as described UE correspondence, will be except that the non-grouping carrier wave of other member carrier the grouping carrier wave as described UE correspondence;
In the step 202, obtaining the grouping carrier index according to user ID UE ID and the resident carrier number of described permission UE can comprise:
Index=(tail number of UE ID or UE ID) mod N of UE grouping carrier wave
Wherein, N be can be resident carrier number.
The corresponding carrier wave of each grouping carrier index obtains the grouping carrier wave of each UE correspondence according to the index formula of UE grouping carrier wave, can obtain the non-grouping carrier wave of each UE correspondence according to the grouping carrier wave of each UE correspondence.
203, if UE resides on the non-grouping carrier wave, according to described Q
Rxlev min offset, CAIncrease the Q of non-grouping carrier wave correspondence
Rxlev minAccording to the Q after increasing
Rxlev min, obtain the incoming level value Srxlev of cell selecting, and carry out carrier wave level cell selecting according to described Srxlev;
Wherein, obtaining the sub-district selects the level value Srxlev that receives specifically to comprise:
Srxlev＝Q
rxlevmeas-(Q
rxlev?min+Q
rxlev?min?offset+Q
rxlev?min?offset，CA)-Pcompensation
Wherein, the Q after the increase
Rxlev minBe meant bias Q by the relevant incoming level thresholding of PLMN
Rxlev min offsetAnd Q
Rxlev min offset, CAIncrease described Q
Rxlev min, Srxlev is the level value that the sub-district choosing receives, Q
RxlevmeasFor measuring the incoming level value of sub-district, Pcompensation is an offset, and the value of Pcompensation can be max (P
EMAX-P
UMAX, 0), wherein, P
EMAXBe the operable maximum transmission power of UE, P
UMAXCan be the maximum radio frequency power output of determining according to UE power rank.
Wherein, in this Srxlev formula, Q
Rxlev min, Q
Rxlev min offset, Q
Rxlev min offset, CAAnd also can represent Q for example with a parameter
Rxlevmir, then described Srxlev formula can for:
Srxlev＝Q
rxlevmeas-Q
rxlevmir-Pcompensation
Srxlev is the level value that the sub-district choosing receives, Q
RxlevmeasFor measuring the incoming level value of sub-district, Q
RxlevmirBe Q
Rxlevmin, Q
Rxlev min offset, CAWith Q
Rxlev min offsetAnd, Pcompensation is an offset.
204, if UE resides on the described grouping carrier wave, then UE is according to the described Q that receives
Rxlev min, obtain the incoming level value Srxlev of cell selecting, and carry out carrier wave level cell selecting according to described Srxlev.
By the message that carrier parameter is carried in reception, described carrier parameter comprises user equipment (UE) specific carriers cell selecting threshold level bias Q
Rxlev min offset, CAWith cell selecting threshold level Q
Rxlev minIf UE resides on the non-grouping carrier wave, according to described Q
Rxlev min offset, CAIncrease the Q of non-grouping carrier wave correspondence
Rxlev minAccording to the Q after increasing
Rxlev min, obtain the incoming level value Srxlev of cell selecting, and carry out carrier wave level cell selecting according to described Srxlev, if UE resides on the described grouping carrier wave, then UE is according to the described Q that receives
Rxlev minObtain the incoming level value Srxlev of cell selecting, and carry out carrier wave level cell selecting according to described Srxlev, thereby under identical signal strength condition, the sub-district that makes UE reside in the grouping carrier wave selects incoming level value Srxlev to reside in the Srxlev of non-grouping carrier wave greater than UE, reaches the purpose of load balancing under the idle condition.
The method of embodiment three, a kind of carrier wave level cell selecting if UE has resided on the suitable carrier wave, then begins to carry out the carrier wave reuse adoption process, if a plurality of carrier waves are same priorities, needs to judge R
sAnd R
n, could guarantee that UE carrier wave level sub-district reselects to better carrier wave, flow process comprises as shown in Figure 3:
301, if UE resides on the described non-grouping carrier wave, measure the grouping carrier wave of described UE correspondence at least; Perhaps, if UE resides on the described grouping carrier wave, and the Srxlev of described grouping carrier wave correspondence is less than the gravity treatment thresholding S of non-grouping carrier wave correspondence
NongroupThe time, measure the described non-grouping carrier wave of described UE correspondence;
302, according to measurement result and new carrier wave level sub-district reselection criterion, carry out the sub-district gravity treatment of carrier wave level;
Described carrier parameter also comprises two bias Q between the carrier wave
OffsetCA, hysteresis Q
HystBias Q
OffsetCA
Described carrier parameter also comprises reselection evaluation time coefficient Treselection
CA, when UE resides on the grouping carrier wave of described UE correspondence, then by described Treselection
CAProlong the reselection evaluation time, the reselection evaluation time that UE is resided on the grouping carrier wave resides in the reselection evaluation time on the non-grouping carrier wave greater than UE.
Described according to measurement result, carry out the sub-district gravity treatment of carrier wave level according to new sub-district reselection criterion and specifically comprise:
When UE resides on the grouping carrier wave of described UE correspondence, then by described Q
OffsetCAIncrease target carrier and the bias Qoffset that serves carrier wave
S, n, then by described Q
Hyst, CAIncrease Q
HystAccording to measurement result Q
MeasyWith the Q after the described increase
HystWith Qoffset
S, nUpgrade R
sWith renewal R
n, and according to the R after the described renewal
sWith the R after the renewal
nCarry out the sub-district gravity treatment of carrier wave level;
R
s＝Q
meas，s+(Q
Hyst+Q
Hyst，CA)
R
n＝Q
meas，n-(Q
offset+Q
offsetCA)
When UE resides on the non-grouping carrier wave of described UE correspondence, when target carrier is the grouping carrier wave of UE correspondence, then by described Q
OffsetCAReduce the Qoffset of the grouping carrier wave of UE correspondence
S, n, pass through Q
OffsetCAReduce Q
HystAccording to measurement result Q
MeasyWith the Q after the described minimizing
HystWith Qoffset
S, nUpgrade R
sWith renewal R
n, and according to the R after the described renewal
sWith the R after the renewal
nCarry out the sub-district gravity treatment of carrier wave level.
R
s＝Q
meas，s+(Q
Hyst-Q
Hyst，CA)
R
n＝Q
meas，n-(Q
offset-Q
offsetCA)
Under other situations, Qoffset
S, n, Q
HystRemain unchanged, according to measurement result Q
MeasyAnd Q
HystWith Qoffset
S, nObtain the R of service carrier wave
sR with target carrier
n
R
s＝Q
meas，s+Q
Hyst
R
n＝Q
meas，n-Q
offset
Carry out cell measurement according to the cell measurement criterion,, carry out the sub-district gravity treatment of carrier wave level according to measurement result and new carrier wave level sub-district reselection criterion.According to UE the different situations of resident carrier wave, to Q
HystWith Qoffset
S, nAdopt different computing formula, make UE reside in or gravity treatment to the grouping carrier wave of its correspondence, thereby reach the balanced as far as possible purpose of load under the idle condition.
The method of the intercarrier load balancing under embodiment four, a kind of carrier aggregation scene is carried out the intercarrier gravity treatment according to the grouping carrier wave of UE and the different priorities of non-grouping carrier wave, and flow process comprises as shown in Figure 4:
401, receive the message of carrying carrier parameter, described carrier parameter comprises user equipment (UE) specific carriers cell selecting threshold level bias Q
Rxlev min offset, CAWith cell selecting threshold level Q
Rxlev min
402, if UE resides on the non-grouping carrier wave, according to described Q
Rxlev min offset, CAIncrease the Q of non-grouping carrier wave correspondence
Rxlev min
403, according to the Q after increasing
Rxlev min, obtain the incoming level value Srxlev of cell selecting, and carry out carrier wave level cell selecting according to described Srxlev.
404, describedly carry out the intercarrier gravity treatment according to the Srxlev that obtains and the grouping carrier wave of UE and the different priorities of non-grouping carrier wave.
Wherein, step 404 can comprise: described carrier parameter also comprises described gravity treatment threshold value, is specially candidate carrier threshold ones ThreshX-Low
CA, the limit value ThreshX-High of candidate carrier wealthy family
CA, service carrier wave threshold ones ThreshServing-Low
CAWith the limit value ThreshServing-High of Serving cell wealthy family
CA
If UE resides on the non-grouping carrier wave, and target carrier is the grouping carrier wave of its correspondence, is higher than described ThreshX-High at divide into groups in the time Srxlev of carrier wave of reselection evaluation
CA, then the direct gravity treatment of UE is to the grouping carrier wave of described correspondence.
If UE resides on the grouping carrier wave, and target carrier is non-grouping carrier wave, be lower than described ThreshServing-Low surpassing divide into groups in the time Srxlev value of carrier wave of reselection evaluation
CA, and the Srxlev value of the non-grouping carrier wave of candidate is higher than described ThreshX-Low
CA, then the direct gravity treatment of UE is to the non-grouping carrier wave of described correspondence.
Wherein, step 401～step 403 is a kind of implementation that obtains Srxlev and carry out carrier wave level cell selecting according to this Srxlev, obtain Srxlev and carry out carrier wave level cell selecting and have more than and be limited to this a kind of scheme according to this Srxlev, UE can carry out cell selecting according to the Srxlev of the acquisition of different modes, and the different priorities of the grouping carrier wave of UE and non-grouping carrier wave carries out the intercarrier gravity treatment.
Carry out the intercarrier gravity treatment according to described according to the Srxlev that obtains and the grouping carrier wave of UE and the different priorities of non-grouping carrier wave, improve the possibility person of the direct gravity treatment of UE to the grouping carrier wave of correspondence, thereby reached the balanced as far as possible purpose of load under the idle condition.
Embodiment five, and a kind of method of carrier wave level cell selecting comprises:
The message of carrier parameter is carried in transmission, and described carrier parameter comprises user equipment (UE) specific carriers cell selecting threshold level bias Q
Rxlev min offset, CAWith cell selecting threshold level Q
Rxlev min
So that UE is when residing on the non-grouping carrier wave, according to described Q
Rxlev min offset, CAIncrease the Q of non-grouping carrier wave correspondence
Rxlev minThereby, make UE according to the Q after increasing
Rxlev min, obtain the incoming level value Srxlev of cell selecting, and make UE carry out carrier wave level cell selecting according to described Srxlev.
By sending the message of carrying carrier parameter to UE, described carrier parameter comprises user equipment (UE) specific carriers cell selecting threshold level bias Q
Rxlevminoffset, CAWith cell selecting threshold level Q
Rxlevmin, so that if UE resides on the non-grouping carrier wave, according to described Q
Rxlevminoffset, CA, pass through Q
Rxlevminoffset, CAIncrease the Q of non-grouping carrier wave correspondence
Rxlevmin, according to the Q after increasing
RxlevminObtain the incoming level value Srxlev of cell selecting, and carry out carrier wave level cell selecting according to described Srxlev, under identical signal strength condition, the sub-district that makes UE reside in the grouping carrier wave selects incoming level value Srxlev to reside in the Srxlev of non-grouping carrier wave greater than UE, thereby reaches the purpose of load balancing under the idle condition.
Embodiment six, a kind of carrier wave level cell selecting apparatus as shown in Figure 5, comprising:
By the message that carrier parameter is carried in reception, described carrier parameter comprises user equipment (UE) specific carriers cell selecting threshold level bias Q
Rxlevminoffset, CAWith cell selecting threshold level Q
Rxlevmin, if UE resides on the non-grouping carrier wave, according to described Q
Rxlevminoffset, CA, pass through Q
Rxlevminoffset, CAIncrease the Q of non-grouping carrier wave correspondence
Rxlevmin, according to the Q after increasing
RxlevminObtain the incoming level value Srxlev of cell selecting, and carry out carrier wave level cell selecting according to described Srxlev, under identical signal strength condition, the sub-district that makes UE reside in the grouping carrier wave selects incoming level value Srxlev to reside in the Srxlev of non-grouping carrier wave greater than UE, thereby reaches the purpose of load balancing under the idle condition.
Embodiment seven, a kind of carrier wave level cell selecting apparatus as shown in Figure 6, comprising:
Further, described acquisition module also is used for if UE resides in described grouping carrier wave, according to the described Q that receives
Rxlev min, the incoming level value Srxlev of acquisition cell selecting;
Described selection module also is used for the Q according to described reception
Rxlev minThe incoming level value Srxlev of the cell selecting that obtains carries out carrier wave level cell selecting.
Further, this device also comprises:
Further, this device also comprises:
Described gravity treatment module specifically was used in reselection evaluation in the time, then when UE resides on the grouping carrier wave of described UE correspondence, then by described Q
OffsetCAIncrease Qoffset
S, n, by described Q
Hyst, CAIncrease Q
HystAccording to measurement result Q
MeasyWith the Q after the described increase
HystWith Qoffset
S, nUpgrade R
sWith renewal R
n, and according to the R after the described renewal
sWith the R after the renewal
nCarry out the sub-district gravity treatment of carrier wave level; Perhaps, in reselection evaluation in the time, if when UE resides on the non-grouping carrier wave of described UE correspondence, and target carrier is the grouping carrier wave of UE correspondence, then by described Q
OffsetCAReduce the Qoffset of the grouping carrier wave of UE correspondence
S, n, pass through Q
OffsetCAReduce Q
HystAccording to measurement result Q
MeasyWith the Q after the described minimizing
HystWith Qoffset
S, nUpgrade R
sWith renewal R
n, and according to the R after the described renewal
sWith the R after the renewal
nCarry out the sub-district gravity treatment of carrier wave level.
Further, described gravity treatment module also is used for carrying out the sub-district gravity treatment of carrier wave level according to the grouping carrier wave of UE and the different priorities of non-grouping carrier wave.Specifically comprise:
If UE resides on the non-grouping carrier wave, and target carrier is the grouping carrier wave of its correspondence, is higher than described ThreshX-High in divide into groups in the time Srxlev value of carrier wave of reselection evaluation
CA, then the direct gravity treatment of UE is to the grouping carrier wave of described correspondence; Perhaps, if UE resides on the grouping carrier wave, and target carrier is the non-grouping carrier wave of its correspondence, is lower than described ThreshServing-Low surpassing divide into groups in the time Srxlev value of carrier wave of reselection evaluation
CA, and the Srxlev value of the non-grouping carrier wave of candidate is higher than described ThreshX-Low
CA, then the direct gravity treatment of UE is to the non-grouping carrier wave of described correspondence.
By the message that carrier parameter is carried in reception, described carrier parameter comprises user equipment (UE) specific carriers cell selecting threshold level bias Q
Rxlevminoffset, CAWith cell selecting threshold level Q
RxlevminIf UE resides on the non-grouping carrier wave, according to described Q
Rxlevminoffset, CA, pass through Q
Rxlevminoffset, CAIncrease the Q of non-grouping carrier wave correspondence
RxlevminAccording to the Q after increasing
RxlevminObtain the incoming level value Srxlev of cell selecting, and carry out carrier wave level cell selecting according to described Srxlev, under identical signal strength condition, the sub-district that makes UE reside in the grouping carrier wave selects incoming level value Srxlev to reside in the Srxlev of non-grouping carrier wave greater than UE, thereby reaches the purpose of load balancing under the idle condition.
The device of embodiment eight, a kind of carrier wave level cell selecting as shown in Figure 7, comprising:
Sending module 701 is used to send the message of carrying carrier parameter, and described carrier parameter comprises user equipment (UE) specific carriers cell selecting threshold level bias Q
Rxlev min offset, CAWith cell selecting threshold level Q
Rxlev minSo that UE is when residing on the non-grouping carrier wave, according to described Q
Rxlev min offset, CAIncrease the Q of non-grouping carrier wave correspondence
Rxlev minThereby, make UE according to the Q after increasing
Rxlev min, obtain the incoming level value Srxlev of cell selecting, and make UE carry out carrier wave level cell selecting according to described Srxlev.
By the message that carrier parameter is carried in transmission, described carrier parameter comprises user equipment (UE) specific carriers cell selecting threshold level bias Q
Rxlevminoffset, CAWith cell selecting threshold level Q
RxlevminSo that UE resides on the non-grouping carrier wave, according to described Q
Rxlevminoffset, CA, pass through Q
Rxlevminoffset, CAIncrease the Q of non-grouping carrier wave correspondence
RxlevminAccording to the Q after increasing
RxlevminObtain the incoming level value Srxlev of cell selecting, and carry out carrier wave level cell selecting according to described Srxlev, under identical signal strength condition, the sub-district that makes UE reside in the grouping carrier wave selects incoming level value Srxlev to reside in the Srxlev of non-grouping carrier wave greater than UE, thereby reaches the purpose of load balancing under the idle condition.
Description by each above embodiment, those skilled in the art can be well understood to the present invention and can realize by the mode of software and essential general hardware platform, certainly, also can pass through hardware, but the former is better execution mode under a lot of situation.Based on such understanding, the part that technical scheme of the present invention contributes to prior art in essence in other words can embody with the form of software product, this computer software product is stored in the storage medium, comprise that some instructions are with so that a computer equipment (can be a personal computer, server, the perhaps network equipment etc.) carry out the method that each embodiment of the present invention is somebody's turn to do.
Though pass through with reference to some of the preferred embodiment of the invention, the present invention is illustrated and describes, but those of ordinary skill in the art should be understood that and can do various changes to it in the form and details, and without departing from the spirit and scope of the present invention.
Claims (18)
1. the method for a carrier wave level cell selecting is characterized in that, comprising:
The message of carrier parameter is carried in reception, and described carrier parameter comprises user equipment (UE) specific carriers cell selecting threshold level bias Q
Rxlev min offset, CAWith cell selecting threshold level Q
Rxlev min
If UE resides on the non-grouping carrier wave, according to described Q
Rxlev min offset, CAIncrease the Q of non-grouping carrier wave correspondence
Rxlev min
According to the Q after increasing
Rxlev min, obtain the incoming level value Srxlev of cell selecting, and carry out carrier wave level cell selecting according to described Srxlev.
2. method according to claim 1 is characterized in that, also comprises:
If UE resides on the grouping carrier wave, then UE is according to the described Q that receives
Rxlev min, the incoming level value Srxlev of acquisition cell selecting is according to the Q of described reception
Rxlev minThe Srxlev that is obtained carries out carrier wave level cell selecting.
3. method according to claim 1 is characterized in that, and is described according to the Q after increasing
Rxlev min, the incoming level value Srxlev of acquisition cell selecting is specially:
Srxlev＝Q
rxlevmeas-(Q
rxlev?min+Q
rxlev?min?offset+Q
rxlev?min?offset，CA)-Pcompensation
Wherein, Q
RxlevmeasFor measuring the incoming level value of sub-district, Q
Rxlev min offsetFor bias, the Pcompensation of the relevant incoming level thresholding of visit public land mobile network VPLMN is offset.
4. method according to claim 1 is characterized in that, described carrier parameter also comprises resident carrier number, the member carrier information of permission UE, also comprises:
Obtain the grouping carrier index according to user ID UE ID and the resident carrier number of described permission UE, with the described member carrier of described grouping carrier index correspondence grouping carrier wave as described UE correspondence;
Will be except that the non-grouping carrier wave of other member carrier the grouping carrier wave as described UE correspondence.
5. method according to claim 1 is characterized in that, also comprises:
If UE resides on the described non-grouping carrier wave, measure the grouping carrier wave of described UE correspondence at least;
If UE resides on the described grouping carrier wave, and the Srxlev of described grouping carrier wave correspondence is less than the gravity treatment thresholding S of non-grouping carrier wave correspondence
NongroupThe time, measure the described non-grouping carrier wave of described UE correspondence.
6. method according to claim 5 is characterized in that, also comprises:
According to measurement result, carry out the sub-district gravity treatment of carrier wave level according to new sub-district reselection criterion.
7. method according to claim 6 is characterized in that, described carrier parameter also comprises two bias Q between the carrier wave
OffsetCA, hysteresis Q
HystBias Q
Hyst, CA
Described according to measurement result, carry out the sub-district gravity treatment of carrier wave level according to new sub-district reselection criterion and specifically comprise:
When UE resides on the grouping carrier wave of described UE correspondence, then by described Q
OffsetCAIncrease the bias Qoffset of Serving cell and adjacent sub-district
S, n, by described Q
Hyst, CAIncrease Q
HystAccording to the Q after measurement result and the described increase
HystWith Qoffset
S, nUpgrade R
sWith renewal R
n, and according to the R after the described renewal
sWith the R after the renewal
nCarry out the sub-district gravity treatment of carrier wave level; Perhaps
Reside in as UE on the non-grouping carrier wave of described UE correspondence, and target carrier is when being the grouping carrier wave of UE correspondence, then by described Q
OffsetCAReduce the Qoffset of the grouping carrier wave of UE correspondence
S, n, by described Q
Hyst, CAReduce Q
HyxtAccording to the Q after measurement result and the described minimizing
HystWith Qoffset
S, nUpgrade R
sWith renewal R
n, and according to the R after the described renewal
sWith the R after the renewal
nCarry out the sub-district gravity treatment of carrier wave level.
8. method according to claim 7 is characterized in that,
Described carrier parameter also comprises reselection evaluation time coefficient Treselection
CA, the described reselection evaluation time is:
When UE resides on the grouping carrier wave of described UE correspondence, then by described Treselection
CAMultiply each other the prolongation reselection evaluation time with the reselection evaluation time, the reselection evaluation time that UE is resided on the grouping carrier wave resides in the reselection evaluation time on the non-grouping carrier wave greater than UE.
9. method according to claim 1 is characterized in that, also comprises:
Carry out the sub-district gravity treatment of carrier wave level according to the grouping carrier wave of UE and the different priorities of non-grouping carrier wave.
10. method according to claim 9 is characterized in that,
Described carrier parameter also comprises described gravity treatment threshold value, candidate carrier threshold ones ThreshX-Low
CA, the limit value ThreshX-High of candidate carrier wealthy family
CA, service carrier wave threshold ones ThreshServing-Low
CAWith the limit value ThreshServing-High of Serving cell wealthy family
CA
If UE resides on the non-grouping carrier wave, and target carrier is the grouping carrier wave of its correspondence, is higher than described ThreshX-High in divide into groups in the time Srxlev value of carrier wave of reselection evaluation
CA, then the direct gravity treatment of UE is to the grouping carrier wave of described correspondence;
If UE resides on the grouping carrier wave, and target carrier is the non-grouping carrier wave of its correspondence, be lower than described ThreshServing-Low in divide into groups in the time Srxlev value of carrier wave of reselection evaluation
CA, and the Srxlev value of the non-grouping carrier wave of candidate is higher than described ThreshX-Low
CA, then the direct gravity treatment of UE is to the non-grouping carrier wave of described correspondence.
11. the method for a carrier wave level cell selecting is characterized in that, comprising:
The message of carrier parameter is carried in transmission, and described carrier parameter comprises user equipment (UE) specific carriers cell selecting threshold level bias Q
Rxlev min offset, CAWith cell selecting threshold level Q
Rxlev min
So that UE is when residing on the non-grouping carrier wave, according to described Q
Rxlev min offset, CAIncrease the Q of non-grouping carrier wave correspondence
Rxlev minThereby, make UE according to the Q after increasing
Rxlev min, obtain the incoming level value Srxlev of cell selecting, and make UE carry out carrier wave level cell selecting according to described Srxlev.
12. a carrier wave level cell selecting apparatus is characterized in that, comprising:
Receiver module is used to receive the message of carrying carrier parameter, and described carrier parameter comprises user equipment (UE) specific carriers cell selecting threshold level bias Q
Rxlev min offset, CAWith cell selecting threshold level Q
Rxlev min
Processing module is used for if UE resides in non-grouping carrier wave, according to described Q
Rxlev min offset, CAIncrease the Q of non-grouping carrier wave correspondence
Rxlev min
Acquisition module is used for according to the Q after increasing
Rxlev min, the incoming level value Srxlev of acquisition cell selecting;
Select module, be used for and carry out carrier wave level cell selecting according to described Srxlev.
13. device according to claim 12 is characterized in that, also comprises:
Described acquisition module also is used for if UE resides in described grouping carrier wave, and then UE is according to the Q of described reception
Rxlev min, the incoming level value Srxlev of acquisition cell selecting;
Described selection module also is used for the Q according to described reception
Rxlev minThe incoming level value Srxlev of the cell selecting that obtains carries out carrier wave level cell selecting.
14. device according to claim 12 is characterized in that, also comprises:
Module is set, is used for and obtains the grouping carrier index according to user ID UE ID and the resident carrier number of described permission UE, with the described member carrier of described grouping carrier index correspondence grouping carrier wave as described UE correspondence; Perhaps be used for the non-grouping carrier wave of other member carrier except that the grouping carrier wave as described UE correspondence.
15. device according to claim 12 is characterized in that, also comprises:
Measurement module is used for measuring the grouping carrier wave of described UE correspondence at least if UE resides in described non-grouping carrier wave; Perhaps be used for if UE resides in described grouping carrier wave, and the Srxlev of described grouping carrier wave correspondence is less than the gravity treatment thresholding S of non-grouping carrier wave correspondence
Nongroup, measure the described non-grouping carrier wave of described UE correspondence.
The gravity treatment module is used for the measurement result according to measurement module, carries out the sub-district gravity treatment according to new sub-district reselection criterion.
16. according to the described device of claim 15, it is characterized in that,
Described gravity treatment module specifically was used in reselection evaluation in the time, then when UE resides on the grouping carrier wave of described UE correspondence, then by described Q
OffsetCAIncrease Qoffset
S, n, by described Q
Hyst, CAIncrease Q
HystAccording to measurement result Q
MeasyWith the Q after the described increase
HystWith Qoffset
S, nUpgrade R
sWith renewal R
n, and according to the R after the described renewal
sWith the R after the renewal
nCarry out the sub-district gravity treatment of carrier wave level; Perhaps, in reselection evaluation in the time, if when UE resides on the non-grouping carrier wave of described UE correspondence, and target carrier is the grouping carrier wave of UE correspondence, then by described Q
OffsetCAReduce the Qoffset of the grouping carrier wave of UE correspondence
S, n, pass through Q
OffsetCAReduce Q
HystAccording to measurement result Q
MeasyWith the Q after the described minimizing
HystWith Qoffset
S, nUpgrade R
sWith renewal R
n, and according to the R after the described renewal
sWith the R after the renewal
nCarry out the sub-district gravity treatment of carrier wave level.
17. device according to claim 12 is characterized in that, also comprises:
Described gravity treatment module also is used for carrying out the sub-district gravity treatment of carrier wave level according to the different priorities of the grouping carrier wave of UE and non-grouping carrier wave, specifically comprises:
If UE resides on the non-grouping carrier wave, and target carrier is the grouping carrier wave of its correspondence, is higher than described ThreshX-High in divide into groups in the time Srxlev value of carrier wave of reselection evaluation
CA, then the direct gravity treatment of UE is to the grouping carrier wave of described correspondence; Perhaps, if UE resides on the grouping carrier wave, and target carrier is the non-grouping carrier wave of its correspondence, is lower than described ThreshServing-Low surpassing divide into groups in the time Srxlev value of carrier wave of reselection evaluation
CA, and the Srxlev value of the non-grouping carrier wave of candidate is higher than described ThreshX-Low
CA, then the direct gravity treatment of UE is to the non-grouping carrier wave of described correspondence.
18. the device of a carrier wave level cell selecting is characterized in that, comprising:
Sending module is used to send the message of carrying carrier parameter, and described carrier parameter comprises user equipment (UE) specific carriers cell selecting threshold level bias Q
Rxlev min offset, CAWith cell selecting threshold level Q
Rxlev minSo that UE is when residing on the non-grouping carrier wave, according to described Q
Rxlev min offset, CAIncrease the Q of non-grouping carrier wave correspondence
Rxlev minThereby, make UE according to the Q after increasing
Rxlev min, obtain the incoming level value Srxlev of cell selecting, and make UE carry out carrier wave level cell selecting according to described Srxlev.
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