CN101754314A - Network community selection method, user equipment, base station and network system - Google Patents
Network community selection method, user equipment, base station and network system Download PDFInfo
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- CN101754314A CN101754314A CN200810239057A CN200810239057A CN101754314A CN 101754314 A CN101754314 A CN 101754314A CN 200810239057 A CN200810239057 A CN 200810239057A CN 200810239057 A CN200810239057 A CN 200810239057A CN 101754314 A CN101754314 A CN 101754314A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/50—Allocation or scheduling criteria for wireless resources
- H04W72/54—Allocation or scheduling criteria for wireless resources based on quality criteria
- H04W72/542—Allocation or scheduling criteria for wireless resources based on quality criteria using measured or perceived quality
Abstract
The embodiment of the invention relates to a network community selection method, user equipment, a base station and a network system, wherein the network community selection method comprises that: the path loss between the user equipment and the community base station is obtained; and a service community is selected for the user equipment according to the path loss. The embodiment of the invention takes the path loss between the user equipment UE and the community base station as the judgment basis of measurement, reporting or switching, so that the service community of the UE is more appropriate, thereby reducing unnecessary interference with a neighbor community because of the improper selection of the service community, so as to reduce the interference in the network system, and improve the thuoughput of the system.
Description
Technical field
The embodiment of the invention relates to communication technical field, particularly a kind of network community selection method, subscriber equipment, base station and network system.
Background technology
At present, user's request is along with the development of mobile communication system is more and more diversified, variation also appears in system equipment in this demand communication network in order to adapt to, networks such as the inside coverage base station of covering and enterprise-level and some other focus coverings arise at the historic moment in the family room that receives much concern, for example: Home eNodeB (Home NodeB), access point (Access Point; Hereinafter to be referred as: AP), private network (PrivateNetwork), Microcell (Micro Cell) and picocell (Pico Cell) etc.The characteristics of these sub-districts are that coverage is little, and the transmitting power of the base station also transmitting power than macrocell (Macro Cell) base station is little.At third generation partner program (3rd Generation Partnership Project; Hereinafter to be referred as: in some motions 3GPP), think that the base station transmitting power of the network that macrocell and this coverage are little may differ 16dB.In addition, at long evolving system (Long Term Evolution; Hereinafter to be referred as: LTE) in the released version 10 (being also referred to as: LTE R10 or LTE+), along with the proposition of the demand that improves throughput of system and raising edge efficient etc., introduced relaying (relay) node and coordinated multiple spot sending and receiving (Coordinated Multipoint Transmission/Reception; Hereinafter to be referred as: notions such as the AP CoMP), the coverage of these nodes is less relatively, and transmitting power is also less.
In LTE, subscriber equipment (User Equipment no matter; Hereinafter to be referred as: UE) be in free time (idle) state and still activate (active) state, all have the problem of measuring control.Under idle condition, UE can be according to the received power of the base station in service sector signal that receives, whether decision starts the different-frequency measure of common frequency measurement or low priority sub-district, when the received power of base station in service sector is lower than corresponding threshold, start the different-frequency measure with frequency or low priority sub-district, UE carries out the sub-district gravity treatment according to the received power of cell base station then.Under state of activation, UE also can start measurement based on threshold value, just starts when the received power of base station in service sector is lower than the state of activation corresponding threshold and measures.Existing, the switch decision under the state of activation is based on the received power and evolved base station (the Evolution NodeB of the cell base station that UE reports; Hereinafter to be referred as: eNB) self radio resource management (Radio resourcemanagement; Hereinafter to be referred as: RRM) algorithm decides.
In realizing process of the present invention, the inventor finds that there are the following problems at least in the prior art:
When UE is in the different heterogeneous network of the transmitting power of cell base station, according to existing with received power during as the basis for estimation of the Serving cell of selecting UE, the Serving cell of the UE that may occur selecting is improper, cause the transmitting power of UE when Serving cell is initiated business stronger, neighbor cell is caused stronger interference, thereby cause defectives such as the increase of network system interference signal, throughput of system reduction.
Summary of the invention
The embodiment of the invention provides a kind of network community selection method, subscriber equipment, base station and network system, with when realizing that the sub-district is switched, avoids neighbor cell is caused interference as far as possible.
The embodiment of the invention provides a kind of network community selection method to comprise:
Obtain the path loss between subscriber equipment and the cell base station;
According to described path loss is that described subscriber equipment is selected Serving cell.
The embodiment of the invention provides a kind of subscriber equipment to comprise again:
First acquisition module is used to obtain the path loss between described subscriber equipment and the cell base station;
Select module, being used for according to described path loss is that described subscriber equipment is selected Serving cell.
The embodiment of the invention also provides a kind of base station, it is characterized in that comprising:
Second acquisition module is used to obtain the path loss between subscriber equipment and the cell base station;
Judge module is used for judging whether to carry out Serving cell according to described path loss and switches.
The embodiment of the invention also provides a kind of network system, comprising:
The base station is used to obtain the path loss between subscriber equipment and the cell base station, whether carries out Serving cell according to described path loss decision and switches.
The embodiment of the invention provides a kind of network community selection method, subscriber equipment, base station and network system, the basis for estimation that adopts the path loss conduct between UE and the sub-district whether to measure, report or switch, make the Serving cell of UE more suitable, reduced because Serving cell is selected the improper unnecessary interference that neighbor cell is caused, thereby reduced interference in the network system, improved the throughput of system.
Description of drawings
The schematic diagram that Fig. 1 switches between picocell and macrocell for UE;
Fig. 2 is the flow chart of network community selection method first embodiment of the present invention;
Fig. 3 is the flow chart of network community selection method second embodiment of the present invention;
Fig. 4 is the schematic diagram of subscriber equipment first embodiment of the present invention;
Fig. 5 is the schematic diagram of subscriber equipment second embodiment of the present invention;
Fig. 6 is the schematic diagram of base station embodiment of the present invention.
Embodiment
Below by drawings and Examples, technical scheme of the present invention is described in further detail.
The schematic diagram that Fig. 1 switches between picocell and macrocell for UE, as shown in Figure 1, UE is in macrocell (Macro Cell) and the picocell (Pico Cell) simultaneously, because the transmitting power of macro cell base station is bigger than picocell, 16dB for example, though macrocell to the path loss of UE than the big 6dB of picocell, but the received power of the signal of the macro cell base station that UE receives is still than the big 10dB of picocell, therefore the power level with the current signal that receives is that received power is done switch decision, can preferred macrocell be the Serving cell of UE.Wherein path loss (path loss) equals the signal transmission power of emission of base station and the difference of accepting power of this signal that UE receives.And after UE switches on the macrocell, since the path loss between UE and the macro cell base station greater than and the picocell base station between path loss, the transmitting power that causes UE to send data to the macrocell needs compares picocell and exceeds a lot, if it is professional that UE initiates to macrocell again, will cause strong jamming to picocell.Be example with the picocell just more than, also can there be similar problem in other similar sub-districts.
In view of above-mentioned analysis, various embodiments of the present invention are applied to the parameter of the path loss between subscriber equipment and the cell base station as the Serving cell of selecting UE in the process of measuring judgement, Serving cell selection and gravity treatment, reporting measurement reports and switching judging.
Fig. 2 is the flow chart of network community selection method first embodiment of the present invention, and as shown in Figure 2, this network community selection method may further comprise the steps:
Step 101, obtain the path loss between subscriber equipment and the cell base station.
Subscriber equipment (User Equipment; Hereinafter to be referred as: UE) can obtain the transmitting power of this sub-district or this sub-district and neighbor cell by the broadcasting of cell base station, after the received power of obtaining this sub-district or neighbor cell, deduct received power according to transmitting power and can obtain path loss between UE and this sub-district or the neighbor cell base station.UE can report received power or also report path loss to base station in service sector, base station in service sector then can be obtained the received power calculating path loss that reports according to UE after the transmitting power, certainly, if UE directly reports path loss, then base station in service sector can directly obtain path loss.
Step 102, be that subscriber equipment is selected Serving cell according to this path loss.
UE generally has two states: idle (idle) state and activation (active) state.When UE is in idle condition, can obtain the path loss between UE and the cell base station and the received power of cell base station, judge whether neighbor cell is measured according to this path loss, or judge whether neighbor cell is measured according to this path loss and received power; If measure, then UE judges whether to carry out Serving cell selection and gravity treatment according to measurement result.When UE is in state of activation, judge whether neighbor cell is measured according to this path loss and/or received power; If measure, then this subscriber equipment judges whether to the base station in service sector reporting measurement reports according to measurement result; If reporting measurement reports then judges whether to carry out Serving cell by this base station in service sector according to this measurement report and switches.
Wherein UE needs to measure control in idle condition and state of activation, and UE judges whether neighbor cell is measured according to path loss, or judges whether neighbor cell measured according to path loss and received power and can be divided into following situation:
Situation one, when Serving cell and neighbor cell base station broadcast transmitting power separately, when not obtaining the transmitting power of neighbor cell base station but UE need obtain by the base station broadcast of neighbor cell, UE judges whether neighbor cell is measured according to path loss and/or received power.
At this moment, if first path loss between subscriber equipment and the base station in service sector is measured threshold value greater than the path loss that is provided with, then definite described subscriber equipment is measured neighbor cell; Or if first path loss between subscriber equipment and the base station in service sector is measured first received power of threshold value and described base station in service sector less than the power measurement threshold value that is provided with greater than the path loss that is provided with, then described subscriber equipment is measured other neighbor cells.In the measuring process, can obtain the received power of neighbor cell base station, or also obtain the transmitting power of neighbor cell base station, calculate second path loss between subscriber equipment and the neighbor cell base station then.Wherein neighbor cell can comprise high priority neighbor cell, same neighbor cell and low priority neighbor cell etc. frequently, to dissimilar neighbor cells different power measurement threshold values can be set.
Situation two, transmitting power when cell broadcast service neighbor cell base station, and when UE can obtain the transmitting power of neighbor cell base station by the broadcasting of Serving cell, the UE that is in idle condition and state of activation judged whether neighbor cell is measured according to path loss and/or received power.
In situation two, the broadcasting of neighbor cell transmitting power can be based on sub-district or cell set, also can be based on frequency or frequency set.Transmitting power comprises concrete transmission power level or power level.UE can adopt the method in the situation one to judge whether neighbor cell is measured: or if first path loss between subscriber equipment and the base station in service sector is measured threshold value greater than the path loss that is provided with, then definite described subscriber equipment is measured neighbor cell; Or if first path loss between subscriber equipment and the base station in service sector is measured first received power of threshold value and described base station in service sector less than the power measurement threshold value that is provided with greater than the path loss that is provided with, then definite described subscriber equipment is measured other neighbor cells.
In addition, because UE can obtain the transmitting power of Serving cell and neighbor cell base station, obtained the transmitting power of neighbor cell base station as UE, and after receiving the received power of Serving cell and neighbor cell base station, just can calculate first path loss of Serving cell correspondence and second path loss of neighbor cell correspondence, therefore can also measure judgement according to the difference between first path loss and second path loss: if first path loss is higher than second path loss, and the difference of the two is measured threshold value greater than the path loss that is provided with, then UE measures other neighbor cells, obtains the path loss between UE and other neighbor cell base stations; Or if first path loss is higher than second path loss, the two difference is measured threshold value and first received power less than the power measurement threshold value that is provided with greater than the path loss that is provided with, then UE measures other neighbor cells, obtains the path loss between UE and other neighbor cell base stations.Wherein other neighbor cells can comprise high priority neighbor cell, same neighbor cell and low priority neighbor cell etc. frequently, to dissimilar neighbor cells different power measurement threshold values can be set.
After neighbor cell is measured, when carrying out Serving cell selection and gravity treatment,, following processing scheme can be arranged at the different conditions of UE.
Under idle condition, after UE measures neighbor cell, can just can carry out Serving cell selection and gravity treatment according to path loss in the measurement result and/or received power.UE carries out according to path loss and/or received power that Serving cell is selected and the method for gravity treatment comprises following several situation: 1) if described path loss less than the path loss gravity treatment threshold value that is provided with, then subscriber equipment carries out Serving cell selection and gravity treatment according to described received power; 2) or if described received power greater than the power gravity treatment threshold value that is provided with, then subscriber equipment carries out Serving cell according to described path loss and selects and gravity treatment; 3) or if described path loss less than the path loss gravity treatment threshold value that is provided with and received power greater than the power gravity treatment threshold value that is provided with, then subscriber equipment carries out Serving cell according to described received power and/or described path loss and selects and gravity treatment.
Wherein, for above-mentioned second kind of situation, promptly received power satisfies the power gravity treatment threshold value of setting, and the method that UE carries out Serving cell selection and gravity treatment according to path loss can be taked path loss high-low technique and priority method etc.Wherein the path loss high-low technique is: after received power is greater than certain value, according to path loss order from low to high, select the Serving cell of the minimum sub-district of path loss as UE.The priority method is: if the path loss of high priority sub-district less than the gravity treatment threshold value of setting, is then selected the sub-district of high priority; If the path loss of same priority sub-district is selected according to path loss criterion from low to high less than the gravity treatment threshold value of setting; If the path loss of low priority sub-district is less than the gravity treatment threshold value of setting, and do not have suitable high priority and same priority sub-district,, then select the sub-district of low priority when the path loss of Serving cell during greater than preset threshold.Wherein can set different gravity treatment threshold values to the sub-district of different priorities.
In above-mentioned first kind of situation, be that path loss is less than the path loss gravity treatment threshold value that is provided with, UE carries out in the method for Serving cell selection and gravity treatment according to described received power, also can adopt received power order from high to low to select, perhaps, just select with received power and native region priority according to above-mentioned priority method.In addition, for above-mentioned the third situation, be path loss less than the path loss gravity treatment threshold value that is provided with and received power greater than the power gravity treatment threshold value that is provided with, can also be according to path loss order, received power order from high to low from low to high, or select according to criterions such as native region priority height.
Under state of activation, after UE measures neighbor cell, can judge whether whether carry out Serving cell by the base station in service sector decision and switch with to the base station in service sector reporting measurement reports.Wherein, UE can judge whether to satisfy and report criterion according to path loss and/or received power, thereby reporting measurement reports comprises following method:
Method one judges whether to report first measurement report to base station in service sector according to the path loss between subscriber equipment and the cell base station, comprises the path loss of the sub-district correspondence that satisfies report condition in described first measurement report.
UE judges whether that according to path loss reporting measurement reports can comprise: according to first path loss between subscriber equipment and the base station in service sector, judge whether to report first measurement report, comprise this first path loss in this first measurement report to base station in service sector; Or according to second path loss between subscriber equipment and the neighbor cell base station, judge whether to report first measurement report to base station in service sector, comprise this second path loss in this first measurement report; Or according to the path loss between the neighbor cell base station of different access waies, judge whether to report first measurement report, comprise the path loss between the neighbor cell base station of this subscriber equipment and different access waies in this first measurement report to base station in service sector.Can reported event be set according to path loss in the above-mentioned report method, this reported event can be similar with the reported event according to power loss, as adopting " C1 "-" C5 ", " D1 ", " D2 " etc. to represent different reported events respectively: when on behalf of the path loss A between UE and the base station in service sector, " C1 " report threshold value less than one, report A; When on behalf of the path loss A between UE and the base station in service sector, " C2 " report threshold value greater than one, report A; " C3 " represents the path loss B between UE and the neighbor cell base station littler one when reporting threshold value than the path loss A between UE and the base station in service sector, reports B; When on behalf of the path loss B between UE and the neighbor cell base station, " C4 " report threshold value less than one, report B; On behalf of the path loss A between UE and the base station in service sector, " C5 " report threshold value 1 greater than one, and the path loss B between UE and the neighbor cell base station reports B when reporting threshold value 2 less than one; When on behalf of the path loss C between the neighbor cell base station of UE and different access waies, " D1 " report threshold value less than one, report C; On behalf of the path loss A between UE and the base station in service sector, " D2 " report threshold value 3 greater than one, and the path loss C between the neighbor cell base station of UE and different access waies reports C etc. when reporting threshold value 4 less than one.The received power that wherein can also comprise the sub-district correspondence that satisfies report condition in first measurement report.
Method two judges whether to report second measurement report to base station in service sector according to the received power of cell base station, comprises the path loss of the sub-district correspondence that satisfies report condition in described second measurement report.
UE adopts the reported event according to the received power setting to report, the received power that not only can comprise the cell base station that satisfies report condition at second measurement report that reports, the path loss that can also comprise the sub-district correspondence that satisfies report condition perhaps comprises the path loss and the received power of the cell base station correspondence that satisfies report condition simultaneously.
Method three judges whether to report the 3rd measurement report to base station in service sector according to the received power of path loss between subscriber equipment and the cell base station and cell base station, comprises the path loss of the sub-district correspondence that satisfies report condition in described the 3rd measurement report.
UE will according to the received power of sub-district correspondence and path loss jointly as the parameter of the setting of reported event, for example in reported event, can be provided with received power satisfy report condition in, the report condition that path loss need satisfy is set.In the 3rd measurement report that reports, also can comprise information such as the received power of the sub-district correspondence that satisfies report condition and/or path loss.
Under state of activation, UE will change Serving cell, measurement result is reported base station in service sector after, base station in service sector can be obtained information such as the path loss that satisfies report condition or received power from the measurement report that UE reports.Base station in service sector judges whether to carry out for UE the switching of Serving cell according to its path loss of obtaining, received power or from the information such as RRM that network side obtains then, and need to determine the information such as Target cell switched.When base station in service sector is carried out switching judging, can adopt and carry out Serving cell selection and the similar method of gravity treatment under the UE idle condition.For example: just satisfied value of setting of path loss and the strongest Target cell of received power switch to the Serving cell of UE, the Target cell that perhaps received power is satisfied the value of setting and path loss minimum switches to the Serving cell of UE etc., can specifically set the criterion of switching judging according to actual conditions, not limit at this.
Wherein, base station in service sector can directly be obtained path loss from the measurement report that UE reports, also the received power calculating path loss that can report according to UE.When cell base station not when eating dishes without rice or wine to broadcast the information of these base station transmitting powers of expression such as the relevant coding of its transmit power level, power level or transmitting power, UE can not obtain the transmitting power of cell base station, therefore can not calculate path loss, base station in service sector need be by the interface between the network, for example X2 mouth between the base station or the S1 mouth between base station and the core net obtain the transmitting power of cell base station.Base station in service sector receives that UE measures and the received power of the cell base station that reports then, calculate the path loss between UE and the cell base station again, judge whether UE is carried out the operation that Serving cell switches according to these path losses, received power or from the information such as RRM that network side obtains.
Present embodiment with the path loss between UE and the cell base station as the basis for estimation of measuring, reporting or switch, make the Serving cell of UE of selection more suitable, reduced owing to Serving cell is selected the improper interference to neighbor cell that causes, reduced interference unnecessary in the network system, improved the throughput of system.
Fig. 3 is the flow chart of network community selection method second embodiment of the present invention, as shown in Figure 3, is in macrocell (Macro Cell) simultaneously and the middle cell selecting method of picocell (Pico Cell) is that example describes with UE.Suppose that wherein macrocell is the Serving cell of UE, picocell is the neighbor cell of UE.This network community selection method may further comprise the steps:
Wherein, the Serving cell of UE is a macrocell, and macro cell base station is the transmitting power of broadcasting oneself only, also can broadcast the transmitting power of picocell base station.This moment, UE can only obtain the transmitting power of macro cell base station, also can obtain the transmitting power of picocell base station simultaneously.
UE can only obtain the received power of macro cell base station, also can obtain the received power of picocell base station simultaneously.
UE can calculate the path loss LP_1 between UE and the macro cell base station, or calculates the path loss LP_2 between UE and the picocell base station simultaneously.
UE can judge whether to start measurement to neighbor cell according to path loss; Or judge whether to start measurement to neighbor cell according to path loss and received power.
For example: when LP_1 when measuring threshold value, start measurement, with received power or the LP_2 that obtains the picocell base station to picocell; Or
When LP_1 greater than the received power of measuring threshold value and macro cell base station when measuring threshold value, start measurement, with received power or the LP_2 that obtains the picocell base station to picocell; Or
When LP_1 during greater than the measurement threshold value set, starts the measurement to other neighbor cells, with received power or the path loss of obtaining other neighbor cell correspondences greater than LP_2 and the difference of the two; Or
When LP_1 greater than LP_2, the two difference greater than the received power of measurement threshold value of setting and macro cell base station when measuring threshold value, start measurement, with received power or the path loss of obtaining other neighbor cell correspondences to other neighbor cells.
Under idle condition, UE carries out Serving cell according to measurement result and selects and gravity treatment.If comprise the information such as emission, received power and path loss of macrocell, picocell and other neighbor cell base stations in the measurement result, then can carry out Serving cell in accordance with the following methods selects and gravity treatment: less than the path loss gravity treatment threshold value that is provided with, then UE carries out Serving cell selection and gravity treatment according to received power as if path loss.For example: the path loss of picocell and other neighbor cell correspondences is less than the path loss gravity treatment threshold value that is provided with, and the received power of picocell base station is bigger, and then UE selects picocell as Serving cell.Can also carry out Serving cell in accordance with the following methods selects and gravity treatment: greater than the power gravity treatment threshold value that is provided with, then UE carries out Serving cell selection and gravity treatment according to path loss as if received power; Or if path loss less than the path loss gravity treatment threshold value that is provided with and received power greater than the power gravity treatment threshold value that is provided with then UE carry out Serving cell according to received power and/or path loss and select and gravity treatment.For example: the received power of macrocell, picocell base station is greater than the power gravity treatment threshold value of setting, and the path loss of picocell correspondence is lower, and then UE selects picocell as Serving cell.UE also can select according to priority in the sub-district of satisfying power and path loss gravity treatment threshold value.
Under state of activation, then need may further comprise the steps: UE judges whether to the macro cell base station reporting measurement reports according to measurement result; If reporting measurement reports then judges whether to carry out Serving cell by macro cell base station according to this measurement report and switches.Wherein UE judges whether that method to the macro cell base station reporting measurement reports specifically comprises with path loss as reporting foundation, or with received power as reporting foundation, comprise the path loss or the received power of the sub-district correspondence that satisfies report condition in the measurement report.UE with path loss as report according to the time, can adopt the reported event setting different with received power, one cover and the similar incident of received power is set, as adopting " C1 "-" C5 ", " D1 ", " D2 " etc. to represent different reported events respectively: when on behalf of LP_1, " C1 " report threshold value less than one, report LP_1; When on behalf of LP_1, " C2 " report threshold value greater than one, report LP_1; " C3 " represents LP_2 littler one when reporting threshold value than LP_1, reports LP_2; When on behalf of LP_2, " C4 " report threshold value less than one, report LP_2; On behalf of LP_1, " C5 " report threshold value 1 greater than one, and one of LP_2 reports LP_2 when reporting threshold value 2; When on behalf of the path loss LP_3 between the neighbor cell base station of UE and different access waies, " D1 " report threshold value less than one, report LP_3; On behalf of LP_1, " D2 " report threshold value 3 greater than one, and LP_3 reports LP_3 etc. when reporting threshold value 4 less than one.UE adopts " C1 "-" C5 ", " D1 ", " D2 " as the condition that reports, and the path loss and the received power of the sub-district correspondence that satisfies condition reported macro cell base station.The above-mentioned threshold value that reports is set according to actual conditions, can be identical, and also can be different.Macro cell base station judges whether needs handed over service sub-district according to information such as the received power in the measurement report, LP_1, LP_2 or LP_3 and RRM algorithm then, if do not need to switch then UE continues with macrocell as Serving cell, if need switch then UE with picocell or other neighbor cells as Serving cell.For example, when the macrocell transmitting power than the big 16dB of picocell, the macrocell received power is than the big 6dB of picocell, but since this moment LP_1 than the big 10dB of LP_2, measure if the LP_1 that is provided with just starts than the big 5dB of LP_2.Then UE need start measurement, may measure the path loss and the received power of other neighbor cell correspondences this moment, if reported event is " C3 ": when occupying the big 5dB of the path loss of sub-district correspondence near the Serving cell, report neighbor cell path loss or received power.Then this moment, UE reported LP_2, also can report the received power of picocell base station simultaneously.If the path loss LP_3 of other neighbor cell correspondences also satisfies " C3 ", then UE reports LP_2, also can report the received power of other neighbor cell base stations simultaneously.Then macro cell base station can switch to UE on the picocell.Switching back UE can serve by picocell, and can not cause unnecessary interference to macrocell.
Do not eating dishes without rice or wine to broadcast the relevant coding of its transmit power level, power level or transmitting power etc. in the picocell base station and can represent under the situation of its transmitting power, it is different that macro cell base station is obtained the method for sub-district path loss.In this case, because UE can not obtain the transmitting power of picocell base station by broadcasting, can not calculate path loss, therefore UE does not have the transmitting power and the path loss of picocell base station yet in reporting the measurement report of macro cell base station, macro cell base station can be by the X2 mouth between the base station or 1 mouthful of transmitting power of obtaining the picocell base station of the S between base station and the core net, and receives the macrocell that UE reports and the received power of picocell base station.After macro cell base station is calculated LP_1 and LP_2 according to this transmitting power and received power then, determine the sub-district whether needs switch to other according to information such as received power, LP_1 and LP_2 and RRM algorithm, and draw the Target cell of switching, again UE is switched on this Target cell.
Present embodiment adopts path loss between UE and the cell base station as the basis for estimation of measuring, reporting, switch, and makes the Serving cell of UE of selection more suitable, has reduced owing to the improper interference that produces of Serving cell selection, has improved the throughput of system.
One of ordinary skill in the art will appreciate that: all or part of step that realizes said method embodiment can be finished by the relevant hardware of program command, aforesaid program can be stored in the computer read/write memory medium, this program is carried out the step that comprises said method embodiment when carrying out; And aforesaid storage medium comprises: various media that can be program code stored such as ROM, RAM, magnetic disc or CD.
Fig. 4 is the schematic diagram of subscriber equipment first embodiment of the present invention, and this subscriber equipment comprises first acquisition module 1 and selects module 2 as shown in Figure 4.Wherein first acquisition module 1 is used to obtain the path loss between subscriber equipment and the cell base station; Select module 2 to be used for selecting Serving cell for this subscriber equipment according to this path loss.
Particularly, first acquisition module 1 of UE obtains transmitting power, the received power that can obtain cell base station, calculate path loss between UE and the cell base station according to transmitting power, received power, selecting module 2 is that UE selects Serving cell according to this path loss.Under idle condition, UE can judge whether neighbor cell is measured according to this path loss, if measure, then carries out Serving cell according to measurement result and selects and gravity treatment.Under state of activation, UE can judge whether neighbor cell is measured according to this path loss, if measure, then judge whether to the base station in service sector reporting measurement reports according to measurement result, if reporting measurement reports then judges whether to carry out Serving cell by base station in service sector according to this measurement report and switches.
First acquisition module of present embodiment UE obtains the path loss between UE and the cell base station, with this path loss is basis for estimation, judge whether operation such as measuring, report, selecting module is that UE selects suitable Serving cell, reduced because Serving cell is selected improper and interference that neighbor cell is caused, thereby reduced interference in the network system, improved the throughput of system.
Fig. 5 is the schematic diagram of subscriber equipment second embodiment of the present invention, and as shown in Figure 5, on the basis of subscriber equipment second embodiment of the present invention, first acquisition module 1 can comprise first acquiring unit 11 and second acquisition unit 12.Wherein first acquiring unit 11 is used to obtain the transmitting power and the received power of cell base station; Second acquisition unit 12 is used for obtaining path loss between subscriber equipment and the cell base station according to this transmitting power and received power.Select module 2 can comprise judging unit 21 and measuring unit 22.Wherein judging unit 21 is used for judging whether that according to path loss the 22 pairs of neighbor cells in indication measurement unit measure, or judges whether that according to described path loss and described received power the 22 pairs of neighbor cells in indication measurement unit measure; Measuring unit 22 is used for according to the indication of judging unit 21 neighbor cell being measured.Wherein judging unit 21 can comprise: in first judgment sub-unit, second judgment sub-unit, the 3rd judgment sub-unit and the 4th judgment sub-unit any one or multinomial, first judgment sub-unit is used for if first path loss between subscriber equipment and the base station in service sector is measured threshold value greater than the path loss that is provided with, and then the 22 pairs of neighbor cells in indication measurement unit are measured; Second judgment sub-unit is used for if second path loss and the difference of the two that first path loss between subscriber equipment and the base station in service sector is higher than between subscriber equipment and the neighbor cell base station are measured threshold value greater than the path loss that is provided with, and then indication measurement unit 22 is measured other neighbor cells; The 3rd judgment sub-unit is used for if first path loss between subscriber equipment and the base station in service sector is measured first received power of threshold value and described base station in service sector less than the power measurement threshold value that is provided with greater than the path loss that is provided with, and then the 22 pairs of neighbor cells in indication measurement unit are measured; The 4th judgment sub-unit is used for if first path loss between subscriber equipment and the base station in service sector is higher than second path loss between subscriber equipment and the neighbor cell base station, the two difference is measured the power measurement threshold value of first received power of threshold value and this base station in service sector less than setting greater than the path loss that is provided with, and then indication measurement unit 22 is measured other neighbor cells.
Further, select module 2 can also comprise selected cell 23 and/or report unit 24.Wherein selected cell 23 is used for judging whether to carry out Serving cell selection and gravity treatment according to the measurement result of measuring unit 22; Report unit 24 to be used for judging whether to the base station in service sector reporting measurement reports according to the measurement result of measuring unit 22.In the first chooser unit during selected cell 23 can comprise, the second chooser unit and the 3rd chooser unit any one or multinomial.Wherein, the first chooser unit is used for as if the path loss gravity treatment threshold value of described path loss less than setting, and then subscriber equipment carries out Serving cell selection and gravity treatment according to described received power; The second chooser unit is used for as if the power gravity treatment threshold value of described received power greater than setting, and then subscriber equipment carries out Serving cell selection and gravity treatment according to described path loss; The 3rd chooser unit be used for if described path loss less than the path loss gravity treatment threshold value that is provided with and received power greater than the power gravity treatment threshold value that is provided with, then subscriber equipment carries out Serving cell according to described received power and/or described path loss and selects and gravity treatment.Report unit 24 can comprise that first reports subelement, second to report subelement and the 3rd to report in the subelement any one or multinomial.Wherein, first reports subelement to be used for judging whether to report first measurement report to base station in service sector according to the path loss between subscriber equipment and the cell base station, comprises the path loss of the sub-district correspondence that satisfies report condition in described first measurement report; Second reports subelement to be used for judging whether to report second measurement report to base station in service sector according to the received power of cell base station, comprises the path loss of the sub-district correspondence that satisfies report condition in described second measurement report; The 3rd reports subelement to be used for judging whether to report the 3rd measurement report to base station in service sector according to the received power of path loss between subscriber equipment and the cell base station and cell base station, comprises the path loss of the sub-district correspondence that satisfies report condition in described the 3rd measurement report.
Particularly, first acquiring unit 11 of first acquisition module 1 of subscriber equipment obtains the received power of cell base station, if UE has obtained the transmitting power of corresponding district base station by cell base station broadcasting, then second acquisition unit 12 can calculate path loss between UE and this cell base station according to this transmitting power and received power.Selecting module 2 can be that UE selects Serving cell according to this path loss.No matter still in state of activation, UE can measure control by judging unit 21 and measuring unit 22 in the selection module 2 in idle condition.Wherein judging unit 21 is judged according to path loss, if need measure neighbor cell, then the 22 pairs of neighbor cells in indication measurement unit are measured.Different judging units 21 according to criterion can be divided into a plurality of judgment sub-unit.Wherein judging unit 21 judges whether that according to path loss measurement comprises to neighbor cell: if first path loss is measured threshold value greater than the path loss that is provided with, then the 22 pairs of neighbor cells in the second judgment sub-unit indication measurement unit are measured, the 22 pairs of neighbor cells in the first judgment sub-unit indication measurement unit are measured, obtaining the received power of neighbor cell base station, or obtain second path loss between UE and this neighbor cell base station; Or if second path loss that first path loss is higher than and the difference of the two are measured threshold value greater than the path loss that is provided with, then the 3rd judgment sub-unit indication measurement unit 22 is measured other neighbor cells, obtains the path loss between UE and other neighbor cell base stations or the received power of other neighbor cell base stations.Judging unit 21 judges whether that according to path loss and received power measurement comprises to neighbor cell: if first path loss is measured threshold value and first received power less than the power measurement threshold value that is provided with greater than the path loss that is provided with, then the 22 pairs of neighbor cells in the 3rd judgment sub-unit indication measurement unit are measured, obtaining the received power of neighbor cell base station, or obtain second path loss; Or if first path loss is higher than second path loss, the two difference is measured first received power of threshold value and base station in service sector less than the power measurement threshold value that is provided with greater than the path loss that is provided with, then the 4th judgment sub-unit indication measurement unit 22 is measured other neighbor cells, obtains the path loss between UE and other neighbor cell base stations or the received power of other neighbor cell base stations.
Under idle condition, after UE measured, selected cell 23 judged whether to carry out Serving cell selection and gravity treatment according to the measurement result of measuring unit 22.When the path loss between UE and the cell base station during less than the path loss gravity treatment threshold value that is provided with, the first chooser unit can carry out Serving cell according to received power and select and gravity treatment; When the received power of cell base station during greater than the power gravity treatment threshold value that is provided with, the second chooser unit can carry out Serving cell according to the path loss between UE and the cell base station and select and gravity treatment; When the path loss between UE and the cell base station less than the received power of path loss gravity treatment threshold value that is provided with and cell base station during greater than the power gravity treatment threshold value that is provided with, the 3rd chooser unit can also can carry out Serving cell selection and gravity treatment according to received power and path loss simultaneously according to received power or path loss.After wherein judging unit 21 also can judge whether neighbor cell measured according to received power, measure then the 22 pairs of neighbor cells in indication measurement unit if desired and measure, selected cell 23 judges whether to carry out Serving cell according to the path loss in the measurement result again and selects and gravity treatment then.Above-mentioned UE carries out the content that Serving cell is selected and the concrete grammar of gravity treatment can carry out Serving cell selection and gravity treatment with reference to UE among network community selection method first embodiment of the present invention according to measurement result, and this no longer narrates again.
Under state of activation, UE reports unit 24 to judge whether to the base station in service sector reporting measurement reports according to the measurement result of measuring unit 22 after measuring.Wherein first report subelement to judge whether to report first measurement report, comprise the path loss of the sub-district correspondence that satisfies report condition in this first measurement report to base station in service sector according to the path loss between UE and the cell base station.First report subelement with the path loss between UE and the cell base station as the determination methods that reports foundation, can be with reference to the description among network community selection method first embodiment of the present invention.Second reports subelement to judge whether to report second measurement report to base station in service sector according to received power, comprises the path loss of the sub-district correspondence that satisfies report condition in this second measurement report.The 3rd reports subelement to judge whether to report the 3rd measurement report to base station in service sector according to path loss and received power simultaneously, can comprise the path loss of the sub-district correspondence that satisfies report condition in the 3rd measurement report.Wherein, any one of first measurement report, second measurement report and the 3rd measurement report or a plurality of in also can comprise the received power of the sub-district correspondence that satisfies report condition.Wherein, after judging unit 21 also can judge whether neighbor cell measured according to received power, measure then the 22 pairs of neighbor cells in indication measurement unit if desired and measure, report unit 24 to judge whether to the base station in service sector reporting measurement reports according to the path loss in the measurement result more then.Received power in the measurement report that the base station then reports according to UE, path loss or judge from the information such as RRM that network side obtains are need to determine whether handed over service sub-district, the information such as Target cell of how switching and switching.
First acquisition module of present embodiment UE obtains the path loss between UE and the cell base station, with this path loss is that basis for estimation indicates that to select module be that UE selects suitable Serving cell, reduced because Serving cell is selected improper and interference that neighbor cell is caused, thereby reduced interference in the network system, improved the throughput of system.
Fig. 6 is the schematic diagram of base station embodiment of the present invention, and as shown in Figure 6, this base station comprises: second acquisition module 4 and judge module 5, and wherein second acquisition module 4 is used to obtain the path loss between subscriber equipment and the cell base station; Judge module 5 is used for judging whether to carry out Serving cell according to path loss and switches.
Particularly, under state of activation, UE need be to the result of the base station of network side reporting measurement if will change Serving cell, and UE can send to the result of these measurements second acquisition module 4 of base station with the form of measurement report.Judge module 5 carries out switch decision according to other information of this measurement report and network side then.Further, second acquisition module 4 can comprise the 3rd acquiring unit and/or the 4th acquiring unit, and wherein the 3rd acquiring unit is used to receive the measurement report of user equipment to report, comprises the path loss between this subscriber equipment and the cell base station in this measurement report; The 4th acquiring unit is used to receive the measurement report of user equipment to report, comprises the received power of cell base station in this measurement report, calculates path loss between this subscriber equipment and the cell base station according to this received power.After connecing the path loss that comprises between UE and the cell base station in the measurement report that the base station receives, the 3rd acquiring unit can directly obtain the path loss between UE and the cell base station from this measurement report.And do not eating dishes without rice or wine to broadcast the relevant coding of its transmit power level, power level or transmitting power etc. can represent the information of its transmitting power the time when cell base station, the 4th acquiring unit can obtain the transmitting power of cell base station by X2 mouth between the cell base station or the S1 mouth between base station and the core net, receive the received power of the cell base station that UE reports simultaneously, calculate path loss between UE and the cell base station according to this transmitting power and received power then.5 of judge modules determine the sub-district whether needs switch to other according to the path loss between UE and the cell base station, and draw the Target cell of switching, then UE are switched on this Target cell.
Second acquisition module of base station embodiment of the present invention obtains the path loss in the network and between the cell base station, judge module is that basis for estimation is carried out switch decision with path loss, UE is switched to more suitable Serving cell, reduce the interference that Serving cell causes neighbor cell, thereby reduced interference in the network system, improved the throughput of system.
Network system embodiment of the present invention comprises the base station, is used to obtain the path loss between subscriber equipment and the cell base station; Whether carrying out Serving cell according to this path loss decision switches.
Particularly, whether switch between the sub-district according to the UE that obtains and the path loss between the cell base station and from information such as the RRM decision that network side obtains the base station, if need switch, how the base station switches if can also drawing, and the Target cell that switches, and UE switched on this Target cell.Wherein the base station can directly obtain the path loss between UE and the cell base station from the measurement report that UE reports, also can from the measurement report that UE reports, obtain transmitting power, the received power of cell base station, calculate the path loss between UE and the cell base station then, can also from the measurement report that UE reports, obtain the received power of cell base station, obtain the transmitting power of cell base station by the interface between the network such as the X2 mouth between the base station and the S1 mouth between base station and the core net, calculate the path loss between UE and the cell base station then.
Subscriber equipment and the base station that provides in the foregoing description can be provided for subscriber equipment in the present embodiment and base station, this no longer to this network system in the concrete structure of subscriber equipment and base station be described in detail.
In the present embodiment, path loss between employing UE and the cell base station is as basis for estimation, whether decision is measured, reports or is switched, UE is in the suitable Serving cell, reduce the unnecessary interference that neighbor cell is caused because the Serving cell selection is improper, thereby reduced the interference of internal system, improved the throughput of system.
It should be noted that at last: above embodiment only in order to technical scheme of the present invention to be described, is not intended to limit; Although with reference to previous embodiment the present invention is had been described in detail, those of ordinary skill in the art is to be understood that: it still can be made amendment to the technical scheme that aforementioned each embodiment put down in writing, and perhaps part technical characterictic wherein is equal to replacement; And these modifications or replacement do not make the essence of appropriate technical solution break away from the spirit and scope of various embodiments of the present invention technical scheme.
Claims (22)
1. a network community selection method is characterized in that, comprising:
Obtain the path loss between subscriber equipment and the cell base station;
According to described path loss is that described subscriber equipment is selected Serving cell.
2. method according to claim 1, it is characterized in that, the described path loss of obtaining between subscriber equipment and the cell base station, comprise: obtain the transmitting power and the received power of cell base station, obtain path loss between described subscriber equipment and the cell base station according to described transmitting power and described received power.
3. method according to claim 1 is characterized in that, described is that described subscriber equipment is selected Serving cell according to described path loss, comprising:
Subscriber equipment judges whether neighbor cell is measured or subscriber equipment judges whether neighbor cell is measured according to the received power of described path loss and cell base station according to described path loss;
If measure, then described subscriber equipment judges whether to carry out Serving cell according to measurement result and selects and gravity treatment;
Perhaps comprise:
Subscriber equipment judges whether neighbor cell is measured according to the received power of cell base station;
If measure, then described subscriber equipment judges whether to carry out Serving cell according to the described path loss in the measurement result and selects and gravity treatment.
4. method according to claim 3 is characterized in that, describedly judges whether to carry out that Serving cell is selected and gravity treatment, comprising:
If described path loss is less than the path loss gravity treatment threshold value that is provided with, then subscriber equipment carries out Serving cell selection and gravity treatment according to described received power; Or
If described received power is greater than the power gravity treatment threshold value that is provided with, then subscriber equipment carries out Serving cell selection and gravity treatment according to described path loss; Or
If greater than the power gravity treatment threshold value that is provided with, then subscriber equipment carries out Serving cell according to described received power and/or described path loss and selects and gravity treatment described path loss less than the path loss gravity treatment threshold value that is provided with and received power.
5. method according to claim 4 is characterized in that, described as if the power gravity treatment threshold value of described received power greater than setting, then subscriber equipment carries out Serving cell selection and gravity treatment according to described path loss, comprising:
If described received power is greater than the power gravity treatment threshold value that is provided with, then subscriber equipment just carries out Serving cell selection and gravity treatment according to described path loss order or native region priority from low to high.
6. method according to claim 4, it is characterized in that, described if described path loss less than the path loss gravity treatment threshold value that is provided with and received power greater than the power gravity treatment threshold value that is provided with, then subscriber equipment carries out Serving cell selection and gravity treatment according to described received power and/or described path loss, comprising:
If greater than the power gravity treatment threshold value that is provided with, then subscriber equipment carries out Serving cell and selects and gravity treatment according to from low to high order of described path loss, the described received power order or the combination in any of native region priority height from high to low described path loss less than the path loss gravity treatment threshold value that is provided with and described received power.
7. method according to claim 1 is characterized in that, described is that described subscriber equipment is selected Serving cell according to described path loss, comprising:
Subscriber equipment judges whether neighbor cell is measured or subscriber equipment judges whether neighbor cell is measured according to the received power of described path loss and cell base station according to described path loss;
If measure, then described subscriber equipment judges whether to the base station in service sector reporting measurement reports according to measurement result;
If reporting measurement reports then judges whether to carry out Serving cell by described base station in service sector according to described measurement report and switches;
Perhaps comprise:
Subscriber equipment judges whether neighbor cell is measured according to the received power of cell base station;
If measure, then described subscriber equipment judges whether to the base station in service sector reporting measurement reports according to the described path loss in the described measurement report;
If reporting measurement reports then judges whether to carry out Serving cell by described base station in service sector according to described measurement report and switches.
8. method according to claim 7 is characterized in that, described judging whether comprises to the base station in service sector reporting measurement reports:
Judge whether to report first measurement report according to the path loss between subscriber equipment and the cell base station, comprise the path loss of the sub-district correspondence that satisfies report condition in described first measurement report to base station in service sector; Or
Received power according to cell base station judges whether to report second measurement report to base station in service sector, comprises the path loss of the sub-district correspondence that satisfies report condition in described second measurement report; Or
Received power according to path loss between subscriber equipment and the cell base station and cell base station judges whether to report the 3rd measurement report to base station in service sector, comprises the path loss of the sub-district correspondence that satisfies report condition in described the 3rd measurement report.
9. method according to claim 8 is characterized in that, describedly judges whether to report first measurement report to base station in service sector according to described path loss, comprises the path loss of the sub-district of satisfying report condition in described first measurement report, comprising:
According to first path loss between described subscriber equipment and the base station in service sector, judge whether to report described first measurement report to base station in service sector, comprise described first path loss in described first measurement report; Or
According to second path loss between described subscriber equipment and the neighbor cell base station, judge whether to report described first measurement report to base station in service sector, comprise described second path loss in described first measurement report; Or
According to the path loss between the neighbor cell base station of described subscriber equipment and different access waies, judge whether to report described first measurement report, comprise the path loss between the neighbor cell base station of described subscriber equipment and different access waies in described first measurement report to base station in service sector.
10. method according to claim 9 is characterized in that, described first measurement report, second measurement report and the 3rd measurement report any one or a plurality of in also comprise: the described received power that satisfies the sub-district correspondence of report condition.
11., it is characterized in that described subscriber equipment judges whether neighbor cell is measured according to described path loss, comprising according to any described method of claim 3-10:
If first path loss between subscriber equipment and the base station in service sector is measured threshold value greater than the path loss that is provided with, then definite described subscriber equipment is measured neighbor cell; Or
If second path loss and the difference of the two that first path loss between subscriber equipment and the base station in service sector is higher than between subscriber equipment and the neighbor cell base station are measured threshold value greater than the path loss that is provided with, then definite described subscriber equipment is measured other neighbor cells.
12., it is characterized in that described subscriber equipment judges whether neighbor cell is measured according to described path loss and described received power, comprising according to any described method of claim 3-10:
If first path loss between subscriber equipment and the base station in service sector is measured first received power of threshold value and described base station in service sector less than the power measurement threshold value that is provided with greater than the path loss that is provided with, then definite described subscriber equipment is measured neighbor cell; Or
If first path loss between subscriber equipment and the base station in service sector is higher than second path loss between subscriber equipment and the neighbor cell base station, the two difference measures threshold value and described base station in service sector greater than the path loss that is provided with first received power less than the power measurement threshold value that is provided with, then definite described subscriber equipment is measured other neighbor cells.
13. a subscriber equipment is characterized in that, comprising:
First acquisition module is used to obtain the path loss between described subscriber equipment and the cell base station;
Select module, being used for according to described path loss is that described subscriber equipment is selected Serving cell.
14. subscriber equipment according to claim 13 is characterized in that, described first acquisition module comprises:
First acquiring unit is used to obtain the transmitting power and the received power of cell base station;
Second acquisition unit is used for obtaining path loss between described subscriber equipment and the cell base station according to described transmitting power and described received power.
15. subscriber equipment according to claim 13 is characterized in that, described selection module comprises:
Judging unit is used for judging whether that according to described path loss the indication measurement unit measures neighbor cell, or judges whether that according to the received power of described path loss and cell base station the indication measurement unit measures neighbor cell;
Measuring unit is used for according to the indication of described judging unit neighbor cell being measured.
16. subscriber equipment according to claim 15 is characterized in that, described selection module also comprises:
Selected cell is used for judging whether to carry out Serving cell selection and gravity treatment according to the measurement result of described measuring unit; And/or
Report the unit, be used for judging whether to the base station in service sector reporting measurement reports according to the measurement result of described measuring unit.
17. subscriber equipment according to claim 15 is characterized in that, described judging unit comprises any or multinomial with lower unit:
First judgment sub-unit is used for if first path loss between subscriber equipment and the base station in service sector is measured threshold value greater than the path loss that is provided with, and then the indication measurement unit is measured neighbor cell;
Second judgment sub-unit, be used for if second path loss and the difference of the two that first path loss between subscriber equipment and the base station in service sector is higher than between subscriber equipment and the neighbor cell base station are measured threshold value greater than the path loss that is provided with, then the indication measurement unit is measured other neighbor cells;
The 3rd judgment sub-unit, be used for if first path loss between subscriber equipment and the base station in service sector is measured first received power of threshold value and described base station in service sector less than the power measurement threshold value that is provided with greater than the path loss that is provided with, then the indication measurement unit is measured neighbor cell;
The 4th judgment sub-unit, be used for if first path loss between subscriber equipment and the base station in service sector is higher than second path loss between subscriber equipment and the neighbor cell base station, the two difference is measured the power measurement threshold value of first received power of threshold value and described base station in service sector less than setting greater than the path loss that is provided with, then the indication measurement unit is measured other neighbor cells.
18. subscriber equipment according to claim 16 is characterized in that, described selected cell comprises any or multinomial with lower unit:
The first chooser unit is used for as if the path loss gravity treatment threshold value of described path loss less than setting, and then subscriber equipment carries out Serving cell selection and gravity treatment according to described received power;
The second chooser unit is used for as if the power gravity treatment threshold value of described received power greater than setting, and then subscriber equipment carries out Serving cell selection and gravity treatment according to described path loss;
The 3rd chooser unit, be used for if described path loss less than the path loss gravity treatment threshold value that is provided with and received power greater than the power gravity treatment threshold value that is provided with, then subscriber equipment carries out Serving cell according to described received power and/or described path loss and selects and gravity treatment.
19. subscriber equipment according to claim 16 is characterized in that, the described unit that reports comprises any or multinomial of following unit:
First reports subelement, is used for judging whether to report first measurement report to base station in service sector according to the path loss between subscriber equipment and the cell base station, comprises the path loss of the sub-district correspondence that satisfies report condition in described first measurement report;
Second reports subelement, is used for judging whether to report second measurement report to base station in service sector according to the received power of cell base station, comprises the path loss of the sub-district correspondence that satisfies report condition in described second measurement report;
The 3rd reports subelement, be used for judging whether to report the 3rd measurement report, comprise the path loss of the sub-district correspondence that satisfies report condition in described the 3rd measurement report to base station in service sector according to the received power of path loss between subscriber equipment and the cell base station and cell base station.
20. a base station is characterized in that, comprising:
Second acquisition module is used to obtain the path loss between subscriber equipment and the cell base station;
Judge module is used for judging whether to carry out Serving cell according to described path loss and switches.
21. base station according to claim 20 is characterized in that, described second acquisition module comprises:
The 3rd acquiring unit is used to receive the measurement report of user equipment to report, comprises the path loss between described subscriber equipment and the cell base station in the described measurement report; And/or
The 4th acquiring unit is used to receive the measurement report of user equipment to report, comprises the received power of cell base station in the described measurement report, obtains path loss between described subscriber equipment and the cell base station according to described received power.
22. a network system is characterized in that, comprising:
The base station is used to obtain the path loss between subscriber equipment and the cell base station, whether carries out Serving cell according to described path loss decision and switches.
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| PCT/CN2009/075339 WO2010063241A1 (en) | 2008-12-05 | 2009-12-07 | Method and device for network cell selection |
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| CN200810239057A CN101754314A (en) | 2008-12-05 | 2008-12-05 | Network community selection method, user equipment, base station and network system |
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