CN102149157A - System and method for cell reselection - Google Patents
System and method for cell reselection Download PDFInfo
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- CN102149157A CN102149157A CN2010101141795A CN201010114179A CN102149157A CN 102149157 A CN102149157 A CN 102149157A CN 2010101141795 A CN2010101141795 A CN 2010101141795A CN 201010114179 A CN201010114179 A CN 201010114179A CN 102149157 A CN102149157 A CN 102149157A
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Abstract
The invention provides a system and method for cell reselection. In the method, user equipment (UE) measures adjacent cells; and if the cell which is measured to be provided with the strongest signal quality at a frequency point is a closed subscriber group (CSG) cell or a hybrid cell authorized by the UE, and if the cell with the strongest signal quality meets the condition that any one of Srxlev and Squal is more than 0, the UE reselects the cell with the strongest signal quality. The technical scheme in the invention is adopted to solve the technical problem that the authorized CSG cell or hybrid cell can not be reselected preferentially in the prior art.
Description
Technical field
The present invention relates to the mobile communication technology field, relate in particular to the system and method for a kind of sub-district gravity treatment.
Background technology
In mobile communcations system, switching and sub-district gravity treatment all are extremely important parts, specifically, as subscriber equipment (User Equipment, when UE) leaving a sub-district and enter the another one sub-district, the signal of the original sub-district (Serving cell) that this equipment is received more and more a little less than, and its received cell signal that is entering is more and more stronger.In order to keep the quality of equipment received signal, this equipment must be transformed into the stronger base station (or sub-district) of signal that newly enters by original base station (or sub-district).For the equipment of connected state, the conversion between this base station is called switching, and for the equipment of Idle state, the change of equipment persistent district is finished by cell reselection process, need Target cell be detected, and carries out the sub-district gravity treatment in satisfactory sub-district.
During the modern wireless network system builds, indoor covering has become the most important thing of networking, suitable indoor covering scheme can allow network farthest bring into play its effect on the one hand, for operator creates bigger value, also can save the networking cost of operator on the other hand greatly, the high repayment of the low input of real realization.Thus, a kind of radio reception device that is called Home eNodeB (Home NB) arises at the historic moment.Home eNodeB is deployed in private sites uses such as family, group, company or school as the dedicated resources of private user, can various high-speed radio access services be provided and preferential on the rate is provided to the user, remedy existing distributed cellular radio communication system simultaneously and cover not enough contradiction.
At present, Home eNodeB mainly contains three kinds of access modules: open, sealing with mix.The Home eNodeB of open mode allows all users to insert, and the home base station cells of this moment is exactly a macrocell.The Home eNodeB of closed mode only allows to insert through the user who authorizes, as users such as kinsfolk, members of community, these are called non-public authorized user group (Closed Subscriber Group through the user who authorizes, be called for short CSG, or title closed user group), authorization message is stored in the usim card (UniversalSubscriber Identity Module, Subscriber Identity Module) of UE.The Home eNodeB of mixed mode allows all users to insert, but enjoys preferential or preferential condition for the user who belongs to this CSG user's group.Cover sub-district down with respect to macro base station (NodeB or eNodeB) and be called macrocell, the sub-district under the Home eNodeB of closed mode covers is called the CSG sub-district, have CSG identify (ID, identity); Sub-district under the Home eNodeB of mixed mode covers is called Hybrid (mixing) sub-district, also has the CSG sign.UE by judging Home eNodeB under CSG or the Hybrid sub-district access module and/or be stored in CSG tabulation (CSG whitelist) information in the usim card, can judge whether certain CSG sub-district allows own access.For a specific UE, allow the common limited amount in CSG sub-district of its access, therefore UE can local information of preserving those CSG sub-districts of once inserting, be called fingerprint information (footprint information), by fingerprint information, UE accurately and fast enters CSG or Hybrid sub-district in the time of can and switching in the sub-district gravity treatment.
The frequency resource that Home eNodeB can use operator to reserve as Home eNodeB specially, be called CSG dedicated frequency (dedicated carrier), also can use the frequency resource identical to be called hybrid frequency (mixed carrier) with macro base station, the minizone is distinguished with physical layer identifications PCI (Physical LayerIdentity) in the same frequency, when family base station and macro base station use same frequency, operator can reserve PCI resource (PCI split) specially for the Home eNodeB of closed mode, and the PCI in the PCI split is used in the CSG sub-district.
Because authorized user (or Member Users) has the advantage on the rate in CSG or Hybrid sub-district, the load that common sub-district is called again on the macrocell also can alleviate greatly, so the UE that authorizes can reside on the CSG or Hybrid sub-district that is authorized to as much as possible.UE by artificial (manual searching) or automatically the mode of (autonomous searching) initiate search to the CSG sub-district.
The quality of UE received signal is finished by the measurement of UE, in order to save the power consumption of equipment, the least possible sub-district of going to reduce the needs measurement, in modern wireless cellular system, UE has a kind of strategy to be based on the cell measurement strategy of frequency priority when measuring in the reuse adoption process of minizone.When operator plans at subzone network, all frequencies are divided into several groups, priority of every set of dispense.The priority of place frequency of oneself and the priority of neighbor cell place frequency can be broadcasted in each sub-district.At the gravity treatment of macrocell, UE observes common gravity treatment rule, and for the gravity treatment of CSG or Hybrid sub-district, UE adopts special rule to implement the sub-district gravity treatment.
Gravity treatment rule at CSG or Hybrid sub-district is:
If UE detects the appropriate C SG sub-district on the alien frequencies, when the ordering (rank) of this appropriate C SG sub-district signal quality on the frequency of place was the highest, no matter the necessary gravity treatment (reselect) of UE was to this CSG sub-district and the priority of current resident frequency.For the Hybrid sub-district, only just adopt this rule for authorized user, promptly can be regardless of the priority of current resident frequency.
For with appropriate C SG sub-district or Hybrid sub-district on frequently, UE must observe common gravity treatment rule promptly according to the ranking criteria of signal quality.
Above-mentioned described: as to calculate R for Serving cell according to the signal quality ranking criteria
s=Q
Meas, s+ Qhyst calculates Rn=Q for neighbor cell
Meas, n-Qoffset, wherein s represents Serving cell, n represents neighbor cell, Q
Meas, sBe illustrated in the performance number RSRP (Reference signal received power) that UE in the reuse adoption process records the reference signal of Serving cell, Q
Meas, nBe the performance number RSRP that UE records the reference signal of neighbor cell in reuse adoption process, Qhyst represents the Serving cell sluggishness, and Qoffset is the deviant of neighbor cell, for Serving cell homogeneous-frequency adjacent-domain Qoffset=Qoffset
S, n, for iso-frequency adjacent community Qoffset=Qoffset
S, n+ Qoffset
Frequency, Qoffset
S, nBe the skew of cell level, Qoffset
FequencyIt is other skew of frequency level.UE sorts all R values, and what make number one promptly is best cell, and the UE gravity treatment is to best cell.In the system message of Serving cell, broadcast Qhyst, Qoffset, Qoffset
Frequency, obtain these parameters behind the UE read system message and be used for the sub-district gravity treatment.
Above-mentioned described appropriate C SG sub-district is meant the selection of satisfying PLMN, insert restriction (notbarred), signal quality satisfies in the standard of cell selecting and the CSG tabulation that CSG is identified at UE.
In the existing protocol to the standard definition that satisfies cell selecting for must satisfy Srxlev＞0 and Squal＞0 simultaneously, wherein
Srxlev＝Q
rxlevmeas-(Q
rxlevmin+Q
rxlevminoffset)-Pcompensation，
S?qual＝Q
qualmeas-(Q
qualmin+Q
qualminoffset)，
In LTE (Long Term Evolution) system, the Q in the following formula
RxlevmeasFor UE records the performance number RSRP (Reference signal received power) of the reference signal of sub-district, Q
QualmeasRecord the mass value RSRQ (Reference Signal Received Quality) of the reference signal of sub-district for UE; Q
RxlevminAnd Q
QualminBe respectively corresponding minimum value, these two parameters are broadcasted in the system message of Serving cell; Q
RxlevminoffsetAnd Q
QualminoffsetBe respectively corresponding offset, and only be applied to reside at the sub-district among the PLMN of the UE assessment high priority among the VPLMN; Pcompensation considers that (Maximum RF output power uses P for the maximum transmission power of UE reality
PowerClassExpression) (Maximum TX power level uses P to the maximum transmission power that allows with the sub-district
EMAX_HExpression) difference factor, Pcompensation=max (P
EMAX_H-P
PowerClass, 0).
In UMTS FDD (universal mobile communications Frequency Division Duplexing (FDD)) system, the Q in the formula of calculating Srxlev and Squal
RxlevmeasFor UE records the RSCP (ReceivedSignal Code Power) of the Primary Common Pilot Channel of sub-district, Q
QualmeasRecord the Ec/No (Thereceived energy per chip divided by the power density in the band) of the Primary Common Pilot Channel of sub-district for UE; Q
RxlevminAnd Q
QualminBe respectively corresponding minimum value, these two parameters are broadcasted in the system message of persistent district; Q
RxlevminoffsetAnd Q
QualminoffsetBe respectively corresponding offset, and only be applied to reside at the sub-district among the PLMN of the UE assessment high priority among the VPLMN, the definition of Pcompensation is consistent with the definition among the LTE (Long Term Evolution).
Because CSG or Hybrid sub-district are widely deployed in the macrocell, for two different CSG in the macrocell or Hybrid sub-district, as shown in Figure 1, frequently CSG sub-district 1 and sub-district 2 are deployed in the diverse location in the macrocell 3 together, sub-district 1 is positioned at the central authorities of macrocell, sub-district 2 is positioned at the edge (all adjacent macro cells all adopt this deployment way) of macrocell, be arranged in the UE assessment sub-district 1 of sub-district 3 and the parameter that current service cell (sub-district 3) broadcasting is all adopted in sub-district 2, because same frequency all adopts identical Q
RxlevminAnd Q
QualminTherefore UE 1 adopts identical evaluate parameter during with sub-district 2 in the assessment sub-district, yet because the interference that is positioned at the 2 suffered sub-districts 3, sub-district at edge will be significantly less than the suffered interference in sub-district 1, UE 3 edge can determine Squal＞0 of sub-district 2 in the sub-district, 3 central authorities the time can not record Squal＞0 (suffered interference is too big) of sub-district 1 probably but UE is in the sub-district, therefore UE can not re-selecting cell 1, even UE is the authorized user of sub-district 1.The UE that adopts existing sub-district reselection criterion to make to authorize can not some CSG that is disturbed of gravity treatment or Hybrid sub-district, and this CSG or Hybrid sub-district with the preferential resident mandate of UE needs is a contradiction.
Summary of the invention
The technical problem to be solved in the present invention provides the system and method for a kind of sub-district gravity treatment, has solved and can't preferentially reselect to the technical problem of authorizing CSG or Hybrid sub-district in the prior art.
In order to address the above problem, the invention provides a kind of method of cell reselection, comprise: subscriber equipment is measured neighbor cell, if record the sub-district that signal quality is the strongest on the frequency is closed user group (CSG) sub-district or mixing (Hybrid) sub-district of described subscriber equipment mandate, and among Srxlev and the Squal any satisfied greater than 0 in the strongest sub-district of described signal quality, and then described subscriber equipment gravity treatment is to the strongest sub-district of this signal quality.
Further, if described frequency is the resident frequency of subscriber equipment, then described subscriber equipment gravity treatment also should be satisfied before the strongest sub-district of described signal quality: subscriber equipment surpasses Preset Time at current persistent district residence time, and the Rn value of the strongest sub-district of each within a certain period of time described signal quality that calculates is all greater than the R of current persistent district
sValue;
If described frequency is not the resident frequency of subscriber equipment, then described subscriber equipment gravity treatment also should be satisfied before the strongest sub-district of described signal quality: subscriber equipment surpasses Preset Time at current persistent district residence time.
Further, the CSG sub-district of described subscriber equipment mandate is meant that described CSG sub-district is in the white tabulation of described subscriber equipment;
The Hybrid sub-district of described subscriber equipment mandate is meant that described Hybrid sub-district is in the white tabulation of described subscriber equipment.
Further, described method is applicable to Long Term Evolution (LTE) system and universal mobile communications Frequency Division Duplexing (FDD) (UMTS FDD) system.
The present invention also provides a kind of method of cell reselection, comprising: for the CSG sub-district of subscriber equipment mandate and Hybrid sub-district are provided with special-purpose Q
QualminAnd/or Q
Qualminoffset
Subscriber equipment is measured neighbor cell, and when the sub-district that signal quality is the strongest on recording a frequency was the CSG sub-district of described subscriber equipment mandate or Hybrid sub-district, subscriber equipment was determined the Q of the sub-district correspondence that described signal quality is the strongest
QualminAnd/or Q
Qualminoffset, if Srxlev＞0 and Squal＞0 are satisfied in the strongest sub-district of described signal quality, then described subscriber equipment gravity treatment is to the strongest sub-district of this signal quality.
Further, the described Q that is exclusively used in CSG and Hybrid sub-district
QualminQ less than user equipment to reside in cell broadcasting
QualminAnd/or the described Q that is exclusively used in CSG and Hybrid sub-district
QualminoffsetQ less than user equipment to reside in cell broadcasting
Qualminoffset
Further, with the path loss of described subscriber equipment institute persistent district be divided into L interval, each interval corresponding Q
QualminAnd/or Q
QualminoffsetDescribed L 〉=1;
Subscriber equipment is determined the Q of the sub-district correspondence that described signal quality is the strongest
QualminAnd/or Q
QualminoffsetMethod be that subscriber equipment is according to the described signal quality of place interval selection of the institute's persistent district path loss Q of strong sub-district
QualminAnd/or Q
Qualminoffset
Further, described special use Q
QualminAnd/or Q
QualminoffsetBe provided with by predefined mode, or be issued to described subscriber equipment by system message.
Further, the big more interval corresponding Q of described path loss
QualminAnd/or Q
QualminoffsetValue big more;
The interval corresponding Q of path loss maximum
QualminThe Q that is less than or equal to described persistent district broadcasting
Qualmin, and/or the interval corresponding Q of path loss maximum
QualminoffsetThe Q that is less than or equal to described persistent district broadcasting
Qualminoffset
Further, if described frequency is the resident frequency of subscriber equipment, then described subscriber equipment gravity treatment also should be satisfied before the strongest sub-district of described signal quality: subscriber equipment surpasses Preset Time at current persistent district residence time, and the Rn value of the strongest sub-district of each within a certain period of time described signal quality that calculates is all greater than the R of current persistent district
sValue;
If described frequency is not the resident frequency of subscriber equipment, then described subscriber equipment gravity treatment also should be satisfied before the strongest sub-district of described signal quality: subscriber equipment surpasses Preset Time at current persistent district residence time.
Further, the CSG sub-district of described subscriber equipment mandate is meant that described CSG sub-district is in the white tabulation of described subscriber equipment;
The Hybrid sub-district of described subscriber equipment mandate is meant that described Hybrid sub-district is in the white tabulation of described subscriber equipment.
Further, described method is applicable to Long Term Evolution (LTE) system and universal mobile communications Frequency Division Duplexing (FDD) (UMTS FDD) system.
The present invention also provides the system of a kind of sub-district gravity treatment, comprises subscriber equipment; Described subscriber equipment, be used to measure neighbor cell, also being used to record the sub-district that signal quality is the strongest on the frequency is closed user group (CSG) sub-district or mixing (Hybrid) sub-district of described subscriber equipment mandate, and among Srxlev and the Squal any satisfied greater than 0 o'clock in the strongest sub-district of described signal quality, and gravity treatment is to the strongest sub-district of this signal quality.
Further, if described frequency is the resident frequency of subscriber equipment, described subscriber equipment also is used for gravity treatment and judges whether following condition before the strongest sub-district of described signal quality: whether subscriber equipment surpasses Preset Time at current persistent district residence time, and whether the Rn value of the strongest sub-district of each within a certain period of time described signal quality that calculates is all greater than the R of current persistent district
sValue is if satisfy then gravity treatment to the strongest sub-district of described signal quality;
If described frequency is not the resident frequency of subscriber equipment, described subscriber equipment also is used for gravity treatment and judges whether following condition before the strongest sub-district of described signal quality: whether subscriber equipment surpasses Preset Time at current persistent district residence time, if satisfy then gravity treatment to the strongest sub-district of described signal quality.
The present invention also provides the system of a kind of sub-district gravity treatment, comprises module and subscriber equipment are set;
The described module that is provided with is used to the CSG sub-district of subscriber equipment mandate and Hybrid sub-district that special-purpose Q is set
QualminAnd/or Q
Qualminoffset
Described subscriber equipment is used to measure neighbor cell, determines the Q of the sub-district correspondence that described signal quality is the strongest when also being used for signal quality is the strongest on recording a frequency sub-district and being the CSG sub-district of described subscriber equipment mandate or Hybrid sub-district
QualminAnd/or Q
Qualminoffset, and when Srxlev＞0 and Squal＞0 are satisfied in the strongest sub-district of described signal quality gravity treatment to the strongest sub-district of this signal quality.
Further, described system also comprises the base station, and the described module that is provided with is positioned at the base station, and the Q of the special use of module setting will be set during the sending system message of base station
QualminAnd/or Q
QualminoffsetBe sent to subscriber equipment; Perhaps,
The described module that is provided with is positioned at subscriber equipment, module is set adopts the predefine mode that the Q of described special use is set
QualminAnd/or Q
Qualminoffset
Further, the described Q that is exclusively used in CSG and Hybrid sub-district
QualminQ less than user equipment to reside in cell broadcasting
QualminAnd/or this is exclusively used in the Q of CSG and Hybrid sub-district
QualminoffsetQ less than user equipment to reside in cell broadcasting
Qualminoffset
Further, describedly CSG sub-district that module is the subscriber equipment mandate is set and the Hybrid sub-district is provided with special-purpose Q
QualminAnd/or Q
QualminoffsetBe meant, be provided with module with the path loss of described subscriber equipment institute persistent district be divided into L interval, each interval corresponding Q
QualminAnd/or Q
QualminoffsetDescribed L 〉=1;
Described subscriber equipment is determined the Q of the sub-district correspondence that described signal quality is the strongest
QualminAnd/or Q
QualminoffsetBe meant that subscriber equipment is according to the Q of the strongest sub-district of the described signal quality of place interval selection of institute's persistent district path loss
QualminAnd/or Q
Qualminoffset
Further, described system also comprises the base station, and the described module that is provided with is positioned at the base station, and the Q that module is provided with will be set during the sending system message of base station
QualminAnd/or Q
QualminoffsetBe sent to subscriber equipment; Perhaps,
The described module that is provided with is positioned at subscriber equipment, module is set adopts the predefine mode that described Q is set
QualminAnd/or Q
Qualminoffset
In sum, adopt technical scheme of the present invention, solved in the prior art and can't avoid and gravity treatment to have arrived the CSG or the Hybrid sub-district of some mandate preferentially to the problem of CSG or the gravity treatment of Hybrid sub-district.Technical solutions according to the invention are applicable to LTE system and UMTS FDD system.
Description of drawings
Fig. 1 is the schematic layout pattern of CSG sub-district among the present invention;
Fig. 2 is the flow chart of the inventive method embodiment one;
Fig. 3 is the flow chart of the inventive method embodiment two;
Fig. 4 is the flow chart of the inventive method embodiment three.
Embodiment
System embodiment
Embodiment one
Present embodiment provides the system of a kind of sub-district gravity treatment, comprises subscriber equipment;
Subscriber equipment, be used to measure neighbor cell, also being used to record the sub-district that signal quality is the strongest on the frequency is closed user group (CSG) sub-district or mixing (Hybrid) sub-district of subscriber equipment mandate, and among Srxlev and the Squal any satisfied greater than 0 o'clock in the sub-district that signal quality is the strongest, and gravity treatment is to the strongest sub-district of this signal quality.
Embodiment two
Present embodiment provides the system of a kind of sub-district gravity treatment, comprises module, subscriber equipment and base station are set;
Module is set, is used to the CSG sub-district of subscriber equipment mandate and Hybrid sub-district that special-purpose Q is set
QualminAnd/or Q
Qualminlffset
Subscriber equipment is used to measure neighbor cell, determines the Q of the sub-district correspondence that this signal quality is the strongest when also being used for signal quality is the strongest on recording a frequency sub-district and being the CSG sub-district of subscriber equipment mandate or Hybrid sub-district
QualminAnd/or Q
Qualminoffset, and when Srxlev＞0 and Squal＞0 are satisfied in the strongest sub-district of this signal quality gravity treatment to the strongest sub-district of this signal quality.
The above-mentioned module that is provided with can be the CSG sub-district of subscriber equipment mandate and the Q that the Hybrid sub-district is provided with special use by following dual mode
QualminAnd/or Q
Qualminoffset:
(a) for the CSG sub-district of subscriber equipment mandate and Hybrid sub-district definite Q is set
QualminAnd/or Q
Qualminoffset, be exclusively used in the Q of CSG and Hybrid sub-district
QualminQ less than user equipment to reside in cell broadcasting
QualminAnd/or this is exclusively used in the Q of CSG and Hybrid sub-district
QualminoffsetQ less than user equipment to reside in cell broadcasting
Qualminoffset
Module is set is positioned at the base station, the Q of the special use of module setting will be set during the sending system message of base station
QualminAnd/or Q
QualminoffsetBe sent to subscriber equipment; Perhaps, module is set is positioned at subscriber equipment, module is set adopts the predefine mode that the Q of described special use is set
QualminAnd/or Q
Qualminoffset
As the GSG sub-district that is exclusively used in mandate that is provided with and the Q of Hybrid sub-district
QualminAnd/or Q
QualminoffsetQ than the persistent district broadcasting of subscriber equipment institute
QualminAnd/or Q
QualminoffsetWhen big, subscriber equipment when calculating the Squal of the CSG sub-district of authorizing and Hybrid sub-district from the CSG sub-district that is exclusively used in mandate and the Q of Hybrid sub-district
QualminAnd/or Q
QualminoffsetAnd the Q of persistent district broadcasting
QualminAnd/or Q
QualminoffsetIn get smaller value and calculate.
(b) be provided with module with the path loss of subscriber equipment institute persistent district be divided into L interval, each interval corresponding Q
QualminAnd/or Q
QualminoffsetL 〉=1.
Subscriber equipment is determined the Q of the sub-district correspondence that signal quality is the strongest
QualminAnd/or Q
QualminoffsetBe meant that subscriber equipment is according to the Q of the strongest sub-district of place this signal quality of interval selection of institute's persistent district path loss
QualminAnd/or Q
Qualminoffset
Each interval corresponding Q
QualminAnd/or Q
QualminoffsetBe provided with by predefined mode, or be issued to described subscriber equipment by system message.
The interval corresponding Q that path loss is big more
QualminAnd/or Q
QualminoffsetValue big more; The interval corresponding Q of path loss maximum
QualminThe Q that is less than or equal to described persistent district broadcasting
Qualmin, and/or the interval corresponding Q of path loss maximum
QualminoffsetThe Q that is less than or equal to described persistent district broadcasting
Qualminoffset
In each interval the Q that CSG sub-district and Hybrid sub-district are provided with
QualminAnd/or Q
QualminoffsetQ than the persistent district broadcasting of subscriber equipment institute
QualminAnd/or Q
QualminoffsetWhen big, subscriber equipment when calculating the Squal of the CSG sub-district of authorizing and Hybrid sub-district from be the Q of CSG sub-district and Hybrid sub-district setting
QualminAnd/or Q
QualminoffsetQ with persistent district broadcasting
QualminAnd/or Q
QualminoffsetIn get smaller value and calculate.
Module is set is positioned at the base station, the Q that module is provided with will be set during the sending system message of base station
QualminAnd/or Q
QualminoffsetBe sent to subscriber equipment; Perhaps,
Module is set is positioned at subscriber equipment, module is set adopts the predefine mode that described Q is set
QualminAnd/or Q
Qualminoffset
More than among each embodiment,
If the frequency that subscriber equipment is measured is the resident frequency of subscriber equipment, subscriber equipment also is used for gravity treatment and judges whether following condition before the strongest sub-district of signal quality: whether subscriber equipment surpasses Preset Time at current persistent district residence time, and whether the Rn value of the strongest sub-district of each within a certain period of time signal quality that calculates is all greater than the R of current persistent district
sValue is if satisfy then gravity treatment to the strongest sub-district of signal quality; Certain hour issues for institute's persistent district configuration and by system message.
If the frequency that subscriber equipment is measured is not the resident frequency of subscriber equipment, subscriber equipment also is used for gravity treatment and judges whether following condition before the strongest sub-district of signal quality: whether subscriber equipment surpasses Preset Time at current persistent district residence time, if satisfy then gravity treatment to the strongest sub-district of signal quality.
Method embodiment
Embodiment one
Present embodiment provides a kind of method of cell reselection, as shown in Figure 2, may further comprise the steps:
Step 201:UE measures adjacent sub-district, records n sub-district arranged on certain frequency (if the frequency at this frequency current institute persistent district place that is UE, then n sub-district comprises persistent district), and wherein to have i individual be CSG sub-district or Hybrid sub-district, n＞i＞0; Sub-district among the one or more UE of being whitelist is arranged in this i CSG sub-district or the Hybrid sub-district.
Step 202:UE sorts to the signal quality of the sub-district of the n on this frequency, promptly calculates the R value of each sub-district, for persistent district (or being called Serving cell), R
s=Q
Meas, s+ Qhyst, for neighbor cell, Rn=Q
Meas, n-Qoffset; If ranking results is that the Rn value of a CSG (or Hybrid) sub-district is maximum, and this CSG (or Hybrid) sub-district is the sub-district (promptly this UE is the authorized user of this CSG or Hybrid sub-district) among the UE whitelist.
Step 203:UE judges whether maximum CSG (or Hybrid) sub-district of this Rn value satisfies among Srxlev and the Squal any greater than 0, be execution in step 204 then, otherwise UE resides in former Serving cell.
Step 204:UE gravity treatment is to maximum CSG (or Hybrid) sub-district of this Rn value.
Above-mentioned steps 202 and 203 can reversed order, promptly judge earlier whether exist in this frequency satisfy among Srxlev and the Squal any greater than 0 sub-district, sorted by signal quality in each sub-district of satisfying this condition again if exist, if the maximum sub-district of ordering is CSG or Hybrid sub-district (being CSG or the Hybrid sub-district that UE authorizes) among the UE whitelist, UE needs gravity treatment to arrive this CSG or Hybrid sub-district.
Embodiment two
Present embodiment provides a kind of method of cell reselection, for the CSG sub-district of subscriber equipment mandate and Hybrid sub-district are provided with special-purpose Q
QualminAnd/or Q
QualminoffsetSubscriber equipment is measured neighbor cell, and when the sub-district that signal quality is the strongest on recording a frequency was the CSG sub-district of subscriber equipment mandate or Hybrid sub-district, subscriber equipment was determined the Q of the sub-district correspondence that this signal quality is the strongest
QualminAnd/or Q
Qualminoffset, if Srxlev＞0 and Squal＞0 are satisfied in the strongest sub-district of this signal quality, then the subscriber equipment gravity treatment is to the strongest sub-district of this signal quality.
For the CSG sub-district of subscriber equipment mandate and Hybrid sub-district are provided with special-purpose Q
QualminAnd/or Q
QualminoffsetCan but be not limited to adopt following dual mode:
Mode (a):
Setting is exclusively used in the Q of CSG and Hybrid sub-district
QualminAnd/or Q
QualminoffsetThe Q that is exclusively used in the CSG sub-district that is provided with
QualminWith the Q that is exclusively used in the Hybrid sub-district
QualminCan be identical, also can be different, the Q that is exclusively used in the CSG sub-district of setting
QualminoffsetWith the Q that is exclusively used in the Hybrid sub-district
QualminoffsetCan be identical, also can be different.
Preferably, this is exclusively used in the Q of CSG and Hybrid sub-district
QualminCan be less than the Q of UE persistent district broadcasting
QualminAnd/or this is exclusively used in the Q of CSG and Hybrid sub-district
QualminoffsetCan be less than the Q of UE persistent district broadcasting
Qualminoffset
The method of UE re-selecting cell may further comprise the steps as shown in Figure 3:
Step 301:UE measures adjacent sub-district, records n sub-district arranged on certain frequency (if the frequency at this frequency current institute persistent district place that is UE, then n sub-district comprises persistent district), and wherein to have i individual be CSG sub-district or Hybrid sub-district, n＞i＞0; Sub-district among the one or more UE of being whitelist is arranged, i.e. the UE CSG sub-district or the Hybrid sub-district of authorizing in this i CSG sub-district or the Hybrid sub-district.
Step 302:UE judges whether this n sub-district exists the sub-district of satisfying Srxlev＞0 and Squal＞0, if (establishing its number is m the sub-district of satisfying Srxlev＞0 and Squal＞0, n 〉=m), then execution in step 303, do not arrive the sub-district of this frequency otherwise UE does not consider gravity treatment.
Need adopt the Q that is exclusively used in CSG and Hybrid sub-district during in this step, for CSG among the UE whitelist or Hybrid sub-district calculating Squal
QualminAnd/or Q
Qualminoffset
Step 303:UE sorts to the signal quality of m the sub-district of satisfying Srxlev＞0 and Squal＞0 on this frequency, promptly calculates the R value of each sub-district, for persistent district, and R
s=Q
Meas, s+ Qhyst, for neighbor cell, Rn=Q
Meas, n-Qoffset; If ranking results is that the Rn value of a CSG (or Hybrid) sub-district is maximum, and this CSG (or Hybrid) sub-district is the sub-district among the UE whitelist.
Step 304:UE gravity treatment is to maximum CSG (or Hybrid) sub-district of this Rn value.
302 and 303 can reversed order in the above-mentioned steps, promptly earlier the signal quality ordering is pressed in each sub-district on this frequency, judge then whether the maximum sub-district (being the strongest sub-district of signal quality) of R value satisfies Srxlev and Squal all greater than 0, if Srxlev and Squal are satisfied all greater than 0 in the maximum sub-district of this R value, and be CSG or Hybrid sub-district (or the CSG or the Hybrid sub-district of authorizing) among the UE whitelist, UE needs gravity treatment to arrive this CSG or Hybrid sub-district.
In the present embodiment, be exclusively used in the Q of CSG and Hybrid sub-district
QualminAnd/or Q
QualminoffsetCan be provided with by predefined mode, as being provided with in agreement, UE uses this default value, can also be issued to UE by system message, carries the Q that is exclusively used in CSG and Hybrid sub-district during as UE place persistent district sending system message
QualminAnd/or Q
Qualminoffset, or carry the Q that is exclusively used in CSG and Hybrid sub-district when CSG that this UE is authorized or Hybrid sub-district sending system message
QualminAnd/or Q
Qualminoffset
In the mode (a), as the CSG sub-district that is exclusively used in mandate that is provided with and the Q of Hybrid sub-district
QualminAnd/or Q
QualminoffsetQ than the persistent district broadcasting of subscriber equipment institute
QualminAnd/or Q
QualminoffsetWhen big, subscriber equipment when calculating the Squal of the CSG sub-district of authorizing and Hybrid sub-district from the CSG sub-district that is exclusively used in mandate and the Q of Hybrid sub-district
QualminAnd/or Q
QualminoffsetAnd the Q of persistent district broadcasting
QualminAnd/or Q
QualminoffsetIn get smaller value and calculate.
Mode (b):
Path loss according to persistent district is that CSG and Hybrid sub-district are provided with Q
QualminAnd/or Q
Qualminoffset, particularly, path loss is divided into L interval, each interval corresponding Q
QualminAnd/or Q
QualminoffsetIn each interval, be the Q of CSG sub-district setting
QualminWith the Q that is provided with for the Hybrid sub-district
QualminCan be identical, also can be different, be the Q of CSG sub-district setting
QualminoffsetWith the Q that is provided with for the Hybrid sub-district
QualminoffsetCan be identical, also can be different.
Preferably, the big more interval corresponding Q of path loss
QualminAnd/or Q
QualminoffsetValue big more; The interval corresponding Q of path loss maximum
QualminThe Q that is less than or equal to persistent district broadcasting
QualminAnd/or the interval corresponding Q of path loss maximum
QualminoffsetThe Q that is less than or equal to persistent district broadcasting
Qualminoffset
The method of UE re-selecting cell may further comprise the steps as shown in Figure 4:
Step 401:UE measures adjacent sub-district, records n sub-district arranged on certain frequency (if the frequency at this frequency current institute persistent district place that is UE, then n sub-district comprises persistent district), and wherein to have i individual be CSG sub-district or Hybrid sub-district, n＞i＞0; Sub-district among the one or more UE of being whitelist is arranged, i.e. the UE CSG sub-district or the Hybrid sub-district of authorizing in this i CSG sub-district or the Hybrid sub-district.
Step 402:UE judges whether this n sub-district exists the sub-district of satisfying Srxlev＞0 and Squal＞0, if (establishing its number is m the sub-district of satisfying Srxlev＞0 and Squal＞0, n 〉=m), then execution in step 403, do not arrive the sub-district of this frequency otherwise UE does not consider gravity treatment.
In this step, need adopt corresponding Q according to the path loss of persistent district for CSG among the UE whitelist or Hybrid sub-district
QualminAnd/or Q
Qualminoffset
Step 403:UE sorts to the signal quality of m the sub-district of satisfying Srxlev＞0 and Squal＞0 on this frequency, promptly calculates the R value of each sub-district, for persistent district, and R
s=Q
Meas, s+ Qhyst, for neighbor cell, Rn=Q
Meas, n-Qoffset; If ranking results is that the Rn value of a CSG (or Hybrid) sub-district is maximum, and this CSG (or Hybrid) sub-district is the sub-district among the UE whitelist.
Step 404:UE gravity treatment is to maximum CSG (or Hybrid) sub-district of this Rn value.
402 and 403 can reversed order in the above-mentioned steps, promptly earlier the signal quality ordering is pressed in each sub-district on this frequency, judge then whether the maximum sub-district (being the strongest sub-district of signal quality) of R value satisfies Srxlev and Squal all greater than 0, if Srxlev and Squal are satisfied all greater than 0 in the maximum sub-district of this R value, and be CSG or Hybrid sub-district (or the CSG or the Hybrid sub-district of authorizing) among the UE whitelist, UE needs gravity treatment to arrive this CSG or Hybrid sub-district.
In the mode (b), in each interval the Q that CSG sub-district and Hybrid sub-district are provided with
QualminAnd/or Q
QualminoffsetQ than the persistent district broadcasting of subscriber equipment institute
QualminAnd/or Q
QualminoffsetWhen big, subscriber equipment when calculating the Squal of the CSG sub-district of authorizing and Hybrid sub-district from be the Q of CSG sub-district and Hybrid sub-district setting
QualminAnd/or Q
QualminoffsetQ with persistent district broadcasting
QualminAnd/or Q
QualminoffsetIn get smaller value and calculate.
More than among each embodiment, if the frequency that UE measures is the resident frequency of UE, then the UE gravity treatment also should be satisfied before the strongest sub-district of signal quality: UE surpasses Preset Time (as 1s) at current persistent district residence time, and the Rn value of the strongest sub-district of each within a certain period of time this signal quality that calculates is all greater than the R of current persistent district
sValue.If the frequency that UE measures is not the resident frequency of UE, then the UE gravity treatment also should be satisfied before the strongest sub-district of signal quality: UE surpasses Preset Time (as 1s) at current persistent district residence time.Certain hour issues for institute's persistent district configuration and by system message herein.
Technical solutions according to the invention are applicable to LTE system and UMTS FDD system.
Below the present invention is described in further detail by several examples of application;
Application example one
UE resides among the Cell_1, and the center frequency point of this sub-district is f1, and this UE has CSG whitelist.Because during UE is in and moves, UE need measure adjacent sub-district, UE records with neighbor cell frequently Cell_2, Cell_3 and Cell_4, physical-layer cell identifier (physical cellidentity) according to the sub-district, UE knows that Cell_2 is that the home base station cells of closed mode is CSG sub-district (having broadcasted the PCI split that is used for the CSG sub-district in the system message of Cell_1), and UE obtains its CSG ID by the system message that reads Cell_2, finds that this CSG ID is in UE whitelist.UE to the CSG sub-district, can not comprise adjacent CSG cell information by automatic reconnaissance probe in the system message of persistent district Cell_1.
Macrocell Cell_3 and Cell_4 satisfy Srxlev＞0 and Squal＞0, and Cell_2 only satisfies Srxlev＞0, do not satisfy Squal＞0.Wherein
Srxlev＝Q
rxlevmeas-(Q
rxlevmin+Q
rxlevminoffset)-Pcompensation，
Squal＝Q
qualmeas-(Q
qualmin+Q
qualminoffset)，
In the formula, Q
RxlevmeasFor UE records the performance number RSRP of the reference signal of sub-district, Q
QualmeasRecord the mass value RSRQ of the reference signal of sub-district for UE; Q
RxlevminAnd Q
QualminBe respectively corresponding minimum value, these two parameters are broadcasted in the system message of persistent district Cell_1.
UE knows that according to the ranking criteria of co-frequency cell Cell_2 is the strongest sub-district on the frequency f 1, and promptly UE is according to the R of Cell_1
s=Q
Meas, sThe Rn=Q of+Qhyst and each sub-district
Meas, nIt is that (and the Rn of Cell_2 is greater than the R of Cell_1 for the maximum sub-district of Rn value that-Qoffset ordering draws Cell_2
s), Q wherein
Meas, sBe illustrated in the performance number RSRP that UE in the reuse adoption process records the reference signal of persistent district Cell_1, Q
Meas, nBe the performance number RSRP that UE records the reference signal of neighbor cell in reuse adoption process, Qhyst represents the persistent district sluggishness, and Qoffset is the deviant of neighbor cell.This moment, UE needed gravity treatment in Cell_2.
Need to prove, the UE gravity treatment in the Cell_2 before, need to satisfy reside in and surpass Preset Time (as 1 second) among the Cell_1, and within a certain period of time the Rn value of (Treselection) Cell_2 of repeatedly calculating always greater than the R of Cell_1
sValue.
In the present embodiment, one of them that satisfies Srxlev and Squal because of CSG Cell_2 be greater than 0, and the Rn of Cell_2 is the sub-district of place frequency maximum, so the UE gravity treatment is to Cell_2.
In the present embodiment, what UE measured is with sub-district frequently, if the sub-district of the alien frequencies that UE measures, so long as the CSG sub-district among the UE whitelist is the strongest sub-district of this frequency, and satisfy Srxlev＞0 or Squal＞0, no matter UE needs gravity treatment to arrive this CSG sub-district and the priority of current resident frequency.If it is the strongest sub-district of frequency, place that UE records the CSG sub-district of a plurality of mandates of alien frequencies (a plurality of frequency) simultaneously, and satisfy Srxlev＞0 or Squal＞0, UE needs gravity treatment to arrive one of them CSG sub-district.
Cell_2 is the CSG sub-district in the present embodiment, if Cell_2 is the Hybrid sub-district, the CSG ID that needs only this sub-district is in the whitelist of UE, and described method is suitable equally.
Adjacent sub-district all belongs to the PLMN of selection or the PLMN or the equivalent PLMN of registration in the present embodiment simultaneously, and neighbor cell is not barred, and adjacent sub-district is (forbiddentracking areas for roaming) not in restricted area.The application scenarios of other embodiment is identical therewith, repeats no more.
Application example two
UE resides among the Cell_1, and the center frequency point of this sub-district is f1, and this UE has CSG whitelist.Because during UE is in and moves, UE need measure adjacent sub-district, UE records with neighbor cell frequently Cell_2, Cell_3, Cell_4 and Cell_5, physical-layer cell identifier (physical cellidentity) according to the sub-district, UE knows that Cell_2 is that the home base station cells of closed mode is CSG sub-district (having broadcasted the PCI split that is used for the CSG sub-district in the system message of Cell_1), UE obtains its CSG ID by the system message that reads Cell_2, finds that this CSG ID is in UE whitelist.
In order to realize the present invention, increased the Q that is exclusively used in CSG and Hybrid sub-district in the new system message
Qualmin, this is exclusively used in the Q of CSG and Hybrid sub-district
QualminCan be less than the Q of macrocell correspondence
Qualmin, according to the Q of this CSG or Hybrid sub-district
QualminThe Cell_2 that calculates satisfies Srxlev＞0 and Squal＞0, and macrocell Cell_3, Cell 4 and Cell_5 also satisfy Srxlev＞0 and Squal＞0.UE further knows that according to the ranking criteria of co-frequency cell Cell_2 is the strongest sub-district on the frequency f 1, and promptly UE is according to the R of Cell_1
s=Q
Meas, sThe Rn=Q of+Qhyst and each sub-district
Meas, nThe Rn that-Qoffset ordering draws Cell_2 is the maximum sub-district of place frequency R value, so UE needs gravity treatment in Cell_2.
Need to prove that if Cell_2 is the Hybrid sub-district, the CSG ID that needs only this sub-district is in the whitelist of UE, described method is suitable equally.
In prior protocols, the parameter of all sub-district gravity treatments all derive from UE resident persistent district, for target CS G that needs gravity treatment or Hybrid sub-district, can adopt other method, UE can use authority CSG or the Hybrid sub-district in the parameter broadcasted, as Q
Qualmin, this also can reach purpose of the present invention, makes Squal＞0 of target CS G or Hybrid sub-district.
Application example three
UE resides among the Cell_1, and the center frequency point of this sub-district is f1, and this UE has CSG whitelist.Because during UE is in and moves, UE need measure adjacent sub-district, the neighbor cell that UE records on the alien frequencies f2 has Cell_2, Cell_3, Cell_4 and Cell_5, according to the physical-layer cell identifier (physicaleellidentity) of sub-district, UE knows that Cell_2 is that the home base station cells of closed mode is CSG sub-district (UE can obtain PCI split according in the past resident sub-district), UE obtains its CSG ID by the system message that reads Cell_2, finds that this CSG ID is in UE whitelist.
In order to realize the present invention, increased the Q that is exclusively used in CSG and Hybrid sub-district in the new system message
Qualmin(at frequency f 2) established Cell_2 and satisfied Srxlev＞0 and Squal＞0.Macrocell Cell_3, Cell_4 and Cell_5 also satisfy Srxlev＞0 and Squal＞0.
UE knows that according to the ranking criteria of co-frequency cell Cell_2 is the strongest sub-district on the frequency f 2, and promptly UE is according to the Rn=Q of each sub-district
Meas, nIt is the strongest sub-district that-Qoffset ordering draws Cell_2, and this moment, UE needed gravity treatment in Cell_2.
Need to prove, be exclusively used in the Q of CSG and Hybrid sub-district in the present embodiment
QualminBy system message broadcasting, be exclusively used in the Q of CSG and Hybrid sub-district
QualminAlso can dispose by predefined mode, promptly agreement regulation UE adopts specific Q for CSG among the whitelist of UE or Hybrid sub-district
Qualmin, UE adopts this particular value when calculating Squal.
In the present embodiment, UE has adopted the Q that is exclusively used in CSG and Hybrid sub-district when calculating Squal
Qualmin, also can expand Q
Qualminoffset, make it that Q that is exclusively used in CSG and Hybrid sub-district be arranged
Qualminoffset(at authorized user), network can or adopt the mode of acquiescence to dispose by this value of system information broadcast.
Application example four
UE resides among the Cell_1, and the center frequency point of this sub-district is f1, and this UE has CSG whitelist.Because during UE is in and moves, UE need measure adjacent sub-district, UE records with neighbor cell frequently Cell_2, Cell_3, Cell_4 and Cell_5, according to the physical-layer cell identifier (physical cellidentity) of sub-district, UE knows that Cell_2 is that the home base station cells of closed mode is the CSG sub-district, UE obtains its CSG ID by the system message that reads Cell_2, finds that this CSG ID is in UE whitelist.
Broadcasted the transmitting power of persistent district in the system message of persistent district, the RSRP value that UE measures persistent district can calculate path loss (Path Loss), and the transmitting power that path loss equals persistent district deducts the RSRP value that UE measures.In the present embodiment, UE calculates the circuit loss value of Cell_1.
When circuit loss value was lower than (and/or equaling) a certain thresholding, the Squal that UE calculates Cell_2 adopted Q
Qualmin1During other situations, the Squal that UE calculates Cell_2 adopts Q
Qualmin2Described thresholding can be broadcasted or adopted the acquiescence mode to dispose by system message; Q
Qualmin1And Q
Qualmin2Also can broadcast or adopt the acquiescence mode to dispose by system message.Especially, Q
Qualmin1Or Q
Qualmin2(one of them) can get the Q among the Squal that calculates the macrocell correspondence
Qualmin
The circuit loss value that this moment, UE recorded Cell_1 is lower than described thresholding, and the Squal that UE calculates Cell_2 adopts Q
Qualminl, Cell_2 satisfies Srxlev＞0 and Squal＞0.Macrocell Cell_3, Cell_4 and Cell_5 also satisfy Srxlev＞0 and Squal＞0.
UE knows that according to the ranking criteria of co-frequency cell Cell_ 2 is the strongest sub-districts on the frequency f 2, and promptly UE is according to the Rn=Q of each sub-district
Meas, nIt is the strongest sub-district that-Qoffset ordering draws Cell_2, and this moment, UE needed gravity treatment in Cell_2.
Need to prove that for the Hybrid sub-district of authorizing, the described method of present embodiment is suitable equally.
In the present embodiment, UE selects different Q according to the circuit loss value of persistent district
Qualmin, only adopted a thresholding for circuit loss value, also can adopt a plurality of thresholdings, under the different value prerequisites of circuit loss value (in different intervals), UE adopts different Q at CSG that authorizes or Hybrid sub-district
QualminAnd/or Q
Qualminoffset
For a person skilled in the art, the present invention can have various changes and variation.Within the spirit and principles in the present invention all, any modification of being done, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (19)
1. method of cell reselection comprises:
Subscriber equipment is measured neighbor cell, if record the sub-district that signal quality is the strongest on the frequency is closed user group (CSG) sub-district or mixing (Hybrid) sub-district of described subscriber equipment mandate, and among Srxlev and the Squal any satisfied greater than 0 in the strongest sub-district of described signal quality, and then described subscriber equipment gravity treatment is to the strongest sub-district of this signal quality.
2. the method for claim 1 is characterized in that:
If described frequency is the resident frequency of subscriber equipment, then described subscriber equipment gravity treatment also should be satisfied before the strongest sub-district of described signal quality: subscriber equipment surpasses Preset Time at current persistent district residence time, and the Rn value of the strongest sub-district of each within a certain period of time described signal quality that calculates is all greater than the R of current persistent district
sValue;
If described frequency is not the resident frequency of subscriber equipment, then described subscriber equipment gravity treatment also should be satisfied before the strongest sub-district of described signal quality: subscriber equipment surpasses Preset Time at current persistent district residence time.
3. the method for claim 1 is characterized in that:
The CSG sub-district of described subscriber equipment mandate is meant that described CSG sub-district is in the white tabulation of described subscriber equipment;
The Hybrid sub-district of described subscriber equipment mandate is meant that described Hybrid sub-district is in the white tabulation of described subscriber equipment.
4. the method for claim 1 is characterized in that:
Described method is applicable to Long Term Evolution (LTE) system and universal mobile communications Frequency Division Duplexing (FDD) (UMTSFDD) system.
5. method of cell reselection comprises:
For the CSG sub-district of subscriber equipment mandate and Hybrid sub-district are provided with special-purpose Q
QualminAnd/or Q
Qualminoffset
Subscriber equipment is measured neighbor cell, and when the sub-district that signal quality is the strongest on recording a frequency was the CSG sub-district of described subscriber equipment mandate or Hybrid sub-district, subscriber equipment was determined the Q of the sub-district correspondence that described signal quality is the strongest
QualminAnd/or Q
Qualminoffset, if Srxlev＞0 and Squal＞0 are satisfied in the strongest sub-district of described signal quality, then described subscriber equipment gravity treatment is to the strongest sub-district of this signal quality.
6. method as claimed in claim 5 is characterized in that:
The described Q that is exclusively used in CSG and Hybrid sub-district
QualminQ less than user equipment to reside in cell broadcasting
QualminAnd/or the described Q that is exclusively used in CSG and Hybrid sub-district
QualminoffsetQ less than user equipment to reside in cell broadcasting
Qualminoffset
7. method as claimed in claim 5 is characterized in that, also comprises:
With the path loss of described subscriber equipment institute persistent district be divided into L interval, each interval corresponding Q
QualminAnd/or Q
QualminoffsetDescribed L 〉=1;
Subscriber equipment is determined the Q of the sub-district correspondence that described signal quality is the strongest
QualminAnd/or Q
QualminoffsetMethod be that subscriber equipment is according to the described signal quality of place interval selection of the institute's persistent district path loss Q of strong sub-district
QualminAnd/or Q
Qualminoffset
8. as claim 5 or 7 described methods, it is characterized in that:
Described special use Q
QualminAnd/or Q
QualminoffsetBe provided with by predefined mode, or be issued to described subscriber equipment by system message.
9. method as claimed in claim 7 is characterized in that:
The interval corresponding Q that described path loss is big more
QualminAnd/or Q
QualminoffsetValue big more;
The interval corresponding Q of path loss maximum
QualminThe Q that is less than or equal to described persistent district broadcasting
Qualmin, and/or the interval corresponding Q of path loss maximum
QualminoffsetThe Q that is less than or equal to described persistent district broadcasting
Qualminoffset
10. method as claimed in claim 5 is characterized in that:
If described frequency is the resident frequency of subscriber equipment, then described subscriber equipment gravity treatment also should be satisfied before the strongest sub-district of described signal quality: subscriber equipment surpasses Preset Time at current persistent district residence time, and the Rn value of the strongest sub-district of each within a certain period of time described signal quality that calculates is all greater than the Rs value of current persistent district;
If described frequency is not the resident frequency of subscriber equipment, then described subscriber equipment gravity treatment also should be satisfied before the strongest sub-district of described signal quality: subscriber equipment surpasses Preset Time at current persistent district residence time.
11. method as claimed in claim 5 is characterized in that:
The CSG sub-district of described subscriber equipment mandate is meant that described CSG sub-district is in the white tabulation of described subscriber equipment;
The Hybrid sub-district of described subscriber equipment mandate is meant that described Hybrid sub-district is in the white tabulation of described subscriber equipment.
12. method as claimed in claim 5 is characterized in that:
Described method is applicable to Long Term Evolution (LTE) system and universal mobile communications Frequency Division Duplexing (FDD) (UMTSFDD) system.
13. the system of a sub-district gravity treatment comprises subscriber equipment; It is characterized in that:
Described subscriber equipment, be used to measure neighbor cell, also being used to record the sub-district that signal quality is the strongest on the frequency is closed user group (CSG) sub-district or mixing (Hybrid) sub-district of described subscriber equipment mandate, and among Srxlev and the Squal any satisfied greater than 0 o'clock in the strongest sub-district of described signal quality, and gravity treatment is to the strongest sub-district of this signal quality.
14. system as claimed in claim 13 is characterized in that:
If described frequency is the resident frequency of subscriber equipment, described subscriber equipment also is used for gravity treatment and judges whether following condition before the strongest sub-district of described signal quality: whether subscriber equipment surpasses Preset Time at current persistent district residence time, and whether the Rn value of the strongest sub-district of each within a certain period of time described signal quality that calculates is all greater than the R of current persistent district
sValue is if satisfy then gravity treatment to the strongest sub-district of described signal quality;
If described frequency is not the resident frequency of subscriber equipment, described subscriber equipment also is used for gravity treatment and judges whether following condition before the strongest sub-district of described signal quality: whether subscriber equipment surpasses Preset Time at current persistent district residence time, if satisfy then gravity treatment to the strongest sub-district of described signal quality.
15. the system of a sub-district gravity treatment comprises module and subscriber equipment are set; It is characterized in that:
The described module that is provided with is used to the CSG sub-district of subscriber equipment mandate and Hybrid sub-district that special-purpose Q is set
QualminAnd/or Q
Qualminoffset
Described subscriber equipment is used to measure neighbor cell, determines the Q of the sub-district correspondence that described signal quality is the strongest when also being used for signal quality is the strongest on recording a frequency sub-district and being the CSG sub-district of described subscriber equipment mandate or Hybrid sub-district
QualminAnd/or Q
Qualminoffset, and when Srxlev＞0 and Squal＞0 are satisfied in the strongest sub-district of described signal quality gravity treatment to the strongest sub-district of this signal quality.
16. system as claimed in claim 15 is characterized in that:
Described system also comprises the base station, and the described module that is provided with is positioned at the base station, and the Q of the special use of module setting will be set during the sending system message of base station
QualminAnd/or Q
QualminoffsetBe sent to subscriber equipment; Perhaps,
The described module that is provided with is positioned at subscriber equipment, module is set adopts the predefine mode that the Q of described special use is set
QualminAnd/or Q
Qualminoffset
17. system as claimed in claim 15 is characterized in that:
The described Q that is exclusively used in CSG and Hybrid sub-district
QualminQ less than user equipment to reside in cell broadcasting
QualminAnd/or this is exclusively used in the Q of CSG and Hybrid sub-district
QualminoffsetQ less than user equipment to reside in cell broadcasting
Qualminoffset
18. system as claimed in claim 15 is characterized in that:
Describedly CSG sub-district that module is the subscriber equipment mandate is set and the Hybrid sub-district is provided with special-purpose Q
QualminAnd/or Q
QualminoffsetBe meant, be provided with module with the path loss of described subscriber equipment institute persistent district be divided into L interval, each interval corresponding Q
QualminAnd/or Q
QualminoffsetDescribed L 〉=1;
Described subscriber equipment is determined the Q of the sub-district correspondence that described signal quality is the strongest
QualminAnd/or Q
QualminoffsetBe meant that subscriber equipment is according to the Q of the strongest sub-district of the described signal quality of place interval selection of institute's persistent district path loss
QualminAnd/or Q
Qualminoffset
19. system as claimed in claim 18 is characterized in that:
Described system also comprises the base station, and the described module that is provided with is positioned at the base station, and the Q that module is provided with will be set during the sending system message of base station
QualminAnd/or Q
QualminoffsetBe sent to subscriber equipment; Perhaps,
The described module that is provided with is positioned at subscriber equipment, module is set adopts the predefine mode that described Q is set
QualminAnd/or Q
Qualminoffset
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| CN111669790A (en) * | 2019-03-08 | 2020-09-15 | 中国移动通信有限公司研究院 | Cell reselection or redirection method, device, network side equipment and terminal |
| CN111065072A (en) * | 2019-11-21 | 2020-04-24 | 新奇点企业管理集团有限公司 | Method and device for selecting and reselecting RSU (radio service Unit) by OBU (on-board unit), electronic equipment and storage medium |
| CN111065072B (en) * | 2019-11-21 | 2022-04-08 | 新奇点智能科技集团有限公司 | Method and device for selecting and reselecting RSU (radio service Unit) by OBU (on-board unit), electronic equipment and storage medium |
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