CN104735733A - Cell reselection method and system, user equipment and base station - Google Patents
Cell reselection method and system, user equipment and base station Download PDFInfo
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- CN104735733A CN104735733A CN201310703375.XA CN201310703375A CN104735733A CN 104735733 A CN104735733 A CN 104735733A CN 201310703375 A CN201310703375 A CN 201310703375A CN 104735733 A CN104735733 A CN 104735733A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/0005—Control or signalling for completing the hand-off
- H04W36/0083—Determination of parameters used for hand-off, e.g. generation or modification of neighbour cell lists
- H04W36/0085—Hand-off measurements
- H04W36/0088—Scheduling hand-off measurements
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/0005—Control or signalling for completing the hand-off
- H04W36/0083—Determination of parameters used for hand-off, e.g. generation or modification of neighbour cell lists
- H04W36/0085—Hand-off measurements
- H04W36/0094—Definition of hand-off measurement parameters
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/08—Reselecting an access point
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/16—Performing reselection for specific purposes
- H04W36/22—Performing reselection for specific purposes for handling the traffic
Abstract
The invention discloses a cell reselection method and system, user equipment and a base station and relates to the field of wireless communication. Different cell reselection parameters are set for user equipment of different capacities through the base station and are broadcasted through system information blocks; the user equipment selects the corresponding cell reselection parameters from the system information blocks according to the self-capacities and performs cell reselection according to the selected cell reselection parameters, so that the user equipment of different capacities perform cell reselection according to different cell reselection parameters, and it is favorable for achieving effective access load balancing of different cells.
Description
Technical field
The present invention relates to wireless communication field, particularly a kind of residence reselecting and system and subscriber equipment and base station.
Background technology
Mobile management is the mechanism of cell mobile communication systems indispensability, can assist LTE(Long Term Evolution, Long Term Evolution) system realizes load balancing, improves Consumer's Experience and entire system performance.Mobile management is mainly divided into two large classes: the mobile management under idle condition and the mobile management under connection status.Mobile management under idle condition selects mainly through community or cell reselection realizes.
As UE(User Equipment, subscriber equipment) be in idle condition, it needs to carry out cell reselection constantly after cell selection, to reside in the higher or better community of channel quality of priority.Network, by arranging the priority of different frequent points, can reach the object that control UE is resident; Meanwhile, UE on certain frequency by top-quality for selective channel community, to provide better service.Need to sort to candidate cell in cell reselection, the general R criterion that adopts is carried out.R criterion is specific as follows:
Serving cell Rs=Qmeas, s+QHyst; Adjacent cell Rn=Qmeas, n-Qoffset;
Wherein, Rs represents the R value of Serving cell, Rn represents the R value of adjacent cell n, Qmeas, s represent the RSRP(Reference Signal Receiving Power of Serving cell, Reference Signal Received Power), Qmeas, n represents the RSRP of adjacent cell n, and QHyst represents that cell reselection is sluggish, and Qoffset represents in cell reselection different districts or different frequency side-play amount in the choice.
In existing cell reselection technique, in same community, all UE receive and adopt identical parameter such as Qoffset to carry out cell reselection.But along with the evolution of LTE, network deployment scenarios is more complicated, and UE ability is more diversified, and all UE still adopt identical parameters to carry out cell reselection, cannot realize effectively accessing load balancing under a lot of scene.
Summary of the invention
An embodiment of the present invention technical problem to be solved is: solve the problem that existing cell reselection technique cannot realize effectively accessing load balancing.
According to an aspect of the embodiment of the present invention, propose a kind of residence reselecting, comprising: subscriber equipment receives the system information block of base station broadcast, system information block comprises different cell reselection parameters corresponding to the subscriber equipment of different ability; Subscriber equipment, according to self-ability, chooses corresponding cell reselection parameters from this system information block; Subscriber equipment carries out cell reselection according to the cell reselection parameters chosen.
In one embodiment, subscriber equipment receives the system information block of base station broadcast, the different cell reselection parameters that system information block comprises the subscriber equipment of different ability corresponding comprises: subscriber equipment receives the system information block SIB4 of base station broadcast, and SIB4 comprises different co-frequency neighbor cell side-play amounts corresponding to the subscriber equipment of different ability; Wherein, the subscriber equipment of different ability comprises: the subscriber equipment not supporting cell range to expand, support cell range expansion but do not support disturb eliminate subscriber equipment, support cell range expansion and support interference eliminate subscriber equipment.
In one embodiment, subscriber equipment receives the system information block of base station broadcast, the different cell reselection parameters that system information block comprises the subscriber equipment of different ability corresponding comprises: subscriber equipment receives the system information block SIB5 of base station broadcast, and SIB5 comprises different alien-frequency district side-play amounts corresponding to the subscriber equipment of different ability; Wherein, the subscriber equipment of different ability comprises: single mode subscriber equipment, multimode user equipment.
In one embodiment, subscriber equipment carries out cell reselection according to the cell reselection parameters chosen and comprises: subscriber equipment calculates the R value of adjacent cell according to the side-play amount chosen, and carries out cell reselection according to the R value of adjacent cell and the R value of Serving cell.
According to another aspect of the embodiment of the present invention, propose a kind of residence reselecting, comprising: base station arranges different cell reselection parameters for the subscriber equipment of different ability; System information block broadcast cell reselecting parameters is passed through in base station, so that subscriber equipment carries out cell reselection according to the cell reselection parameters corresponding to self-ability.
In one embodiment, base station is comprised by system information block broadcast cell reselecting parameters: different co-frequency neighbor cell side-play amounts corresponding to the subscriber equipment of different ability is broadcasted by system information block SIB4 in base station; Wherein, the subscriber equipment of different ability comprises: the subscriber equipment not supporting cell range to expand, support cell range expansion but do not support disturb eliminate subscriber equipment, support cell range expansion and support interference eliminate subscriber equipment.
In one embodiment, base station is comprised by system information block broadcast cell reselecting parameters: different alien-frequency district side-play amounts corresponding to the subscriber equipment of different ability is broadcasted by system information block SIB5 in base station; Wherein, the subscriber equipment of different ability comprises: single mode subscriber equipment, multimode user equipment.
According to another aspect of the embodiment of the present invention, propose a kind of subscriber equipment, comprising: parameter receiver module, for receiving the system information block of base station broadcast, system information block comprises different cell reselection parameters corresponding to the subscriber equipment of different ability; Parameter selecting module, for according to self-ability, chooses corresponding cell reselection parameters from this system information block; Cell reselection module, for carrying out cell reselection according to the cell reselection parameters chosen.
In one embodiment, parameter receiver module, specifically for: receive the system information block SIB4 of base station broadcast, SIB4 comprises different co-frequency neighbor cell side-play amounts corresponding to the subscriber equipment of different ability; Wherein, the subscriber equipment of different ability comprises: the subscriber equipment not supporting cell range to expand, support cell range expansion but do not support disturb eliminate subscriber equipment, support cell range expansion and support interference eliminate subscriber equipment.
In one embodiment, parameter receiver module, specifically for: receive the system information block SIB5 of base station broadcast, SIB5 comprises different alien-frequency district side-play amounts corresponding to the subscriber equipment of different ability; Wherein, the subscriber equipment of different ability comprises: single mode subscriber equipment, multimode user equipment.
In one embodiment, cell reselection module, specifically for: the R value calculating adjacent cell according to the side-play amount chosen, and carry out cell reselection according to the R value of adjacent cell and the R value of Serving cell.
According to another aspect of the embodiment of the present invention, propose a kind of base station, comprising: parameter setting module, for arranging different cell reselection parameters for the subscriber equipment of different ability; Parameter broadcast module, for by system information block broadcast cell reselecting parameters, so that subscriber equipment carries out cell reselection according to the cell reselection parameters corresponding to self-ability.
In one embodiment, parameter broadcast module, specifically for: broadcast different co-frequency neighbor cell side-play amounts corresponding to the subscriber equipment of different ability by system information block SIB4; Wherein, the subscriber equipment of different ability comprises: the subscriber equipment not supporting cell range to expand, support cell range expansion but do not support disturb eliminate subscriber equipment, support cell range expansion and support interference eliminate subscriber equipment.
In one embodiment, parameter broadcast module, specifically for: broadcast different alien-frequency district side-play amounts corresponding to the subscriber equipment of different ability by system information block SIB5; Wherein, the subscriber equipment of different ability comprises: single mode subscriber equipment, multimode user equipment.
According to an aspect of the embodiment of the present invention, also propose a kind of cell reselection system, comprising: aforementioned subscriber equipment and aforementioned base station.
The present invention arranges different cell reselection parameters by base station for the subscriber equipment of different ability, by system information block broadcast cell reselecting parameters, subscriber equipment is according to self-ability, corresponding cell reselection parameters is chosen from this system information block, and carry out cell reselection according to the cell reselection parameters chosen, thus the subscriber equipment achieving different ability carries out cell reselection according to different cell reselection parameters, be conducive to realizing different districts and effectively access load balancing.Such as under the scene of macrocell and small-cell mixed networking, utilize method subscriber equipment of the present invention can priority access small-cell, although the signal quality of subregion, small-cell may not as good as macrocell, but usually there are less user and more Radio Resource in small-cell, therefore, subscriber equipment still can obtain the throughput performance higher than macrocell in small-cell.
By referring to the detailed description of accompanying drawing to exemplary embodiment of the present invention, further feature of the present invention and advantage thereof will become clear.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the schematic flow sheet of a residence reselecting of the present invention embodiment.
Fig. 2 is the schematic flow sheet of another embodiment of residence reselecting of the present invention.
Fig. 3 is the deployment scenario schematic diagram of Macro FDD of the present invention and Small cell FDD mixed networking.
Fig. 4 is the deployment scenario schematic diagram of Macro FDD of the present invention and Small cell TDD mixed networking.
Fig. 5 is the structural representation of a cell reselection system of the present invention embodiment.
Fig. 6 is the structural representation of the embodiment in base station of the present invention.
Fig. 7 is the structural representation of a subscriber equipment of the present invention embodiment.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, be clearly and completely described the technical scheme in the embodiment of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Illustrative to the description only actually of at least one exemplary embodiment below, never as any restriction to the present invention and application or use.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
Unless specifically stated otherwise, otherwise positioned opposite, the numerical expression of the parts of setting forth in these embodiments and step and numerical value do not limit the scope of the invention.
Meanwhile, it should be understood that for convenience of description, the size of the various piece shown in accompanying drawing is not draw according to the proportionate relationship of reality.
May not discuss in detail for the known technology of person of ordinary skill in the relevant, method and apparatus, but in the appropriate case, described technology, method and apparatus should be regarded as a part of authorizing specification.
In all examples with discussing shown here, any occurrence should be construed as merely exemplary, instead of as restriction.Therefore, other example of exemplary embodiment can have different values.
It should be noted that: represent similar terms in similar label and letter accompanying drawing below, therefore, once be defined in an a certain Xiang Yi accompanying drawing, then do not need to be further discussed it in accompanying drawing subsequently.
Cannot realize effectively accessing the problem of load balancing to solve existing cell reselection technique, the present invention proposes a kind of cell reselection scheme realized based on different districts reselecting parameters.
Fig. 1 is the schematic flow sheet of a residence reselecting of the present invention embodiment.
As shown in Figure 1, the residence reselecting of the present embodiment comprises the following steps:
Step S101, base station arranges different cell reselection parameters for the subscriber equipment of different ability.
Step S102, system information block broadcast cell reselecting parameters is passed through in base station, so that subscriber equipment carries out cell reselection according to the cell reselection parameters corresponding to self-ability.
Wherein, cell reselection can be divided into co-frequency cell gravity treatment and alien-frequency district gravity treatment.Co-frequency cell gravity treatment, can solve wireless coverage problem; Alien-frequency district gravity treatment, not only can solve wireless coverage problem, but also can realize load balancing by the priority setting different frequent points.Co-frequency cell reselecting parameters and alien-frequency district reselecting parameters can be broadcasted by different system information blocks (System Information Block, SIB).Illustrate respectively below.
In one embodiment, step S102 base station is comprised by system information block broadcast cell reselecting parameters: different co-frequency neighbor cell side-play amounts corresponding to the subscriber equipment of different ability is broadcasted by system information block SIB4 in base station.
Wherein, the subscriber equipment of different ability comprises: do not support cell range expand (CellRange Expansion, CRE) subscriber equipment (such as Rel-8UE), support cell range expansion but do not support to disturb eliminate subscriber equipment (such as Rel-10UE), support cell range expansion and support the subscriber equipment (such as Rel-11UE) that interference is eliminated.
In one embodiment, under the scene of macrocell and small-cell mixed networking, when current service cell is macrocell, adjacent cell is small-cell, the side-play amount not supporting subscriber equipment that cell range is expanded corresponding is greater than supports cell range expansion but the side-play amount not supporting to disturb the subscriber equipment eliminated corresponding, supports cell range expansion but the side-play amount not supporting to disturb the subscriber equipment eliminated corresponding is greater than and supports cell range expansion and the side-play amount supporting subscriber equipment that interference is eliminated corresponding.Otherwise, when current service cell is small-cell, adjacent cell is macrocell, the side-play amount not supporting subscriber equipment that cell range is expanded corresponding is less than supports cell range expansion but the side-play amount not supporting to disturb the subscriber equipment eliminated corresponding, supports cell range expansion but the side-play amount not supporting to disturb the subscriber equipment eliminated corresponding is less than and supports cell range expansion and the side-play amount supporting subscriber equipment that interference is eliminated corresponding.
Table 1 is the different co-frequency neighbor cell side-play amount that the subscriber equipment of different ability is corresponding
According to description above, the co-frequency neighbor cell side-play amount that in same community, the UE of different ability is corresponding is different, and namely Q11, Q12, Q13 are different.In like manner, Q21, Q22, Q23 are also different.
In one embodiment, step S102 base station is comprised by system information block broadcast cell reselecting parameters: different alien-frequency district side-play amounts corresponding to the subscriber equipment of different ability is broadcasted by system information block SIB5 in base station.
Wherein, the subscriber equipment of different ability comprises: single mode subscriber equipment, multimode user equipment.In one embodiment, under the scene of macrocell and small-cell mixed networking, when current service cell is macrocell, adjacent cell is small-cell, the side-play amount that single mode subscriber equipment is corresponding is greater than side-play amount corresponding to multimode user equipment." multimode " refers to and can support two or more mobile telephone system specifications, as GSM, TDMA, CDMA, LTE etc.
Table 2 is the different alien-frequency district side-play amount that the subscriber equipment of different ability is corresponding
| Access frequency (RAT) | Single mode UE | Multimode UE |
| Frequency 1 | Q’11 | Q’12 |
| Frequency 2 | Q’21 | Q’22 |
| … | … | … |
According to description above, the alien-frequency district side-play amount that in same community, the UE of different ability is corresponding is different, and namely Q ' 11, Q ' 12 are different.In like manner, Q ' 21, Q ' 22 are also different.
Fig. 2 is the schematic flow sheet of another embodiment of residence reselecting of the present invention.
As shown in Figure 2, the residence reselecting of the present embodiment comprises the following steps:
Step S201, subscriber equipment receives the system information block of base station broadcast, and system information block comprises different cell reselection parameters corresponding to the subscriber equipment of different ability.
Step S202, subscriber equipment, according to self-ability, chooses corresponding cell reselection parameters from this system information block.
Step S203, subscriber equipment carries out cell reselection according to the cell reselection parameters chosen.
In one embodiment, step S201 subscriber equipment receives the system information block of base station broadcast, the different cell reselection parameters that system information block comprises the subscriber equipment of different ability corresponding comprises: subscriber equipment receives the system information block SIB4 of base station broadcast, and SIB4 comprises different co-frequency neighbor cell side-play amounts corresponding to the subscriber equipment of different ability; Wherein, the subscriber equipment of different ability comprises: the subscriber equipment not supporting cell range to expand, support cell range expansion but do not support disturb eliminate subscriber equipment, support cell range expansion and support interference eliminate subscriber equipment.
In one embodiment, step S201 subscriber equipment receives the system information block of base station broadcast, the different cell reselection parameters that system information block comprises the subscriber equipment of different ability corresponding comprises: subscriber equipment receives the system information block SIB5 of base station broadcast, and SIB5 comprises different alien-frequency district side-play amounts corresponding to the subscriber equipment of different ability; Wherein, the subscriber equipment of different ability comprises: single mode subscriber equipment, multimode user equipment.
In one embodiment, step S203 subscriber equipment carries out cell reselection according to the cell reselection parameters chosen and comprises: subscriber equipment calculates the R value of adjacent cell according to the side-play amount chosen, and carries out cell reselection according to the R value of adjacent cell and the R value of Serving cell.Such as, if the R value of Serving cell is more than or equal to the R value of adjacent cell, gravity treatment is to Serving cell, if the R value of Serving cell is less than the R value of adjacent cell, gravity treatment is to adjacent cell.Further, in order to avoid gravity treatment frequently, can also threshold value be set, such as, when the R value that the R value of Serving cell exceedes adjacent cell reaches certain threshold value, gravity treatment is to Serving cell, in like manner, when the R value that the R value of adjacent cell exceedes Serving cell reaches certain threshold value, gravity treatment is to adjacent cell.
Wherein, the R value of Serving cell and the R value of adjacent cell can adopt following formulae discovery:
Serving cell Rs=Qmeas, s+QHyst;
Adjacent cell Rn=Qmeas, n-Qoffset;
Wherein, Rs represents the R value of Serving cell, Rn represents the R value of adjacent cell n, Qmeas, s represent the RSRP(Reference Signal Receiving Power of Serving cell, Reference Signal Received Power), Qmeas, n represents the RSRP of adjacent cell n, and QHyst represents that cell reselection is sluggish, and Qoffset represents in cell reselection different districts or different frequency side-play amount in the choice.
The residence reselecting that the embodiment of the present invention provides, by base station, different cell reselection parameters is set for the subscriber equipment of different ability, by system information block broadcast cell reselecting parameters, subscriber equipment is according to self-ability, corresponding cell reselection parameters is chosen from this system information block, and carry out cell reselection according to the cell reselection parameters chosen, thus the subscriber equipment achieving different ability carries out cell reselection according to different cell reselection parameters, be conducive to realizing different districts and effectively access load balancing.Such as under the scene of macrocell and small-cell mixed networking, utilize method subscriber equipment of the present invention can priority access small-cell, although the signal quality of subregion, small-cell may not as good as macrocell, but usually there are less user and more Radio Resource in small-cell, therefore, subscriber equipment still can obtain the throughput performance higher than macrocell in small-cell.Further, can switching times be reduced, reduce network and the burden of subscriber equipment on switching, comprise measurement, Signalling exchange and power consumption etc.; When subscriber equipment forwards connected state to from Idle state, without the need to most suitable community directly can be connected to by switching, improve Consumer's Experience.
In order to make the solution of the present invention clearly, enumerate an application example below.
Fig. 3 is Macro FDD(Frequency Division Duplexing (FDD) macrocell) and Small cell FDD(Frequency Division Duplexing (FDD) small-cell) the deployment scenario schematic diagram of mixed networking.
As shown in Figure 3, system comprises Frequency Division Duplexing (FDD) macrocell and Frequency Division Duplexing (FDD) small-cell n, and this Liang Ge community adopts with frequently disposing.Comprise two UE in system, wherein UE1 is Rel-8UE, does not support CRE; UE2 is Rel-10UE, support CRE, the position of two UE closely, as shown in Figure 3.Then the concrete steps of cell reselection are as follows:
1) base station is in its cell reselection parameters broadcasted, and distinguishes according to UE access capability, and the UE namely for different access capability broadcasts different cell reselection parameters.In fact, base station is broadcasted Qoffset according to the form below 3 content in SIB4 in citing.
Table 3
2) UE reads the SIB4 information of base station broadcast.Simultaneously according to self-ability, choose corresponding cell reselection parameters Qoffset.Through corresponding reading, the Qoffset value of UE1 and UE2 is respectively 3dB and 0dB, i.e. Qoffset(UE1)=3dB, Qoffset(UE2)=0dB.
3) UE to sort to candidate cell according to R criterion thus realizes cell reselection.Suppose that the position of UE1 and UE2 is very close, and
The Rs value of Serving cell Macro is: Rs(UE1)=Rs(UE2)=10dB
The Qmeas of adjacent cell (small-cell n), n value is Qmeas, n(UE1)=Qmeas, n(UE2)=12dB
According to the Qoffset value of notice in the signal strength values of above each community and broadcast, each UE carries out cell reselection.The cell reselection result of UE1 and UE2 is:
UE1 selects Macro, because Rs(UE1)=10dB>Rn(UE1)=Qmeas, n(UE1)-Qoffset(UE1)=9dB
UE1 selects small-cell, because Rs(UE1)=10dB<Rn(UE2)=Qmeas, n(UE2)-Qoffset(UE2)=12dB
Visible by above example, there is UE priority access small-cell between Macro and small-cell of CRE ability, thus realize effective load balancing between Macro and small-cell.In Fig. 3, dotted line represents to have border, small-cell when CRE ability UE accesses, and the solid line of dotted line inside represents not have border, small-cell when CRE ability UE accesses.
Cell reselection scheme of the present invention can also be applicable to such as Macro FDD(Frequency Division Duplexing (FDD) macrocell) and Small cell TDD(time division duplex small-cell) situation of mixed networking.Fig. 4 is Macro FDD(Frequency Division Duplexing (FDD) macrocell) and Small cell TDD(time division duplex small-cell) the deployment scenario schematic diagram of mixed networking.Utilize cell reselection scheme of the present invention, FDD/TDD bimodulus UE is priority access small-cell TDD between Macro FDD and small-cell TDD, thus realizes effective load balancing between Macro and small-cell.In Fig. 4, border, small-cell when dotted line represents that FDD/TDD bimodulus UE accesses, border, small-cell when the solid line of dotted line inside represents that TDD single mode UE accesses.
Fig. 5 is the structural representation of a cell reselection system of the present invention embodiment.As shown in Figure 5, the cell reselection system 50 of the present embodiment comprises: base station 51 and subscriber equipment 52.
Wherein, with reference to figure 6, base station 51 comprises:
Parameter setting module 511, for arranging different cell reselection parameters for the subscriber equipment of different ability; And
Parameter broadcast module 512, for by system information block broadcast cell reselecting parameters, so that subscriber equipment carries out cell reselection according to the cell reselection parameters corresponding to self-ability.
In one embodiment, parameter broadcast module 512, specifically for: broadcast different co-frequency neighbor cell side-play amounts corresponding to the subscriber equipment of different ability by system information block SIB4; Wherein, the subscriber equipment of different ability comprises: the subscriber equipment not supporting cell range to expand, support cell range expansion but do not support disturb eliminate subscriber equipment, support cell range expansion and support interference eliminate subscriber equipment.
In one embodiment, parameter broadcast module 512, specifically for: broadcast different alien-frequency district side-play amounts corresponding to the subscriber equipment of different ability by system information block SIB5; Wherein, the subscriber equipment of different ability comprises: single mode subscriber equipment, multimode user equipment.
Wherein, with reference to figure 7, subscriber equipment 52 comprises:
Parameter receiver module 521, for receiving the system information block of base station broadcast, system information block comprises different cell reselection parameters corresponding to the subscriber equipment of different ability;
Parameter selecting module 522, for according to self-ability, chooses corresponding cell reselection parameters from this system information block;
Cell reselection module 523, for carrying out cell reselection according to the cell reselection parameters chosen.
In one embodiment, parameter receiver module 521, specifically for: receive the system information block SIB4 of base station broadcast, SIB4 comprises different co-frequency neighbor cell side-play amounts corresponding to the subscriber equipment of different ability; Wherein, the subscriber equipment of different ability comprises: the subscriber equipment not supporting cell range to expand, support cell range expansion but do not support disturb eliminate subscriber equipment, support cell range expansion and support interference eliminate subscriber equipment.
In one embodiment, parameter receiver module 521, specifically for: receive the system information block SIB5 of base station broadcast, SIB5 comprises different alien-frequency district side-play amounts corresponding to the subscriber equipment of different ability; Wherein, the subscriber equipment of different ability comprises: single mode subscriber equipment, multimode user equipment.
In one embodiment, cell reselection module 523, specifically for: the R value calculating adjacent cell according to the side-play amount chosen, and carry out cell reselection according to the R value of adjacent cell and the R value of Serving cell.
Cell reselection system provided by the invention and accordingly base station and subscriber equipment, by base station, different cell reselection parameters is set for the subscriber equipment of different ability, by system information block broadcast cell reselecting parameters, subscriber equipment is according to self-ability, corresponding cell reselection parameters is chosen from this system information block, and carry out cell reselection according to the cell reselection parameters chosen, thus the subscriber equipment achieving different ability carries out cell reselection according to different cell reselection parameters, be conducive to realizing different districts and effectively access load balancing.Such as under the scene of macrocell and small-cell mixed networking, utilize method subscriber equipment of the present invention can priority access small-cell, although the signal quality of subregion, small-cell may not as good as macrocell, but usually there are less user and more Radio Resource in small-cell, therefore, subscriber equipment still can obtain the throughput performance higher than macrocell in small-cell.
It will be appreciated by those skilled in the art that all or part of step realizing above-described embodiment can have been come by hardware, the hardware that also can carry out instruction relevant by program completes, described program can be stored in a kind of computer-readable recording medium, the above-mentioned storage medium mentioned can be read-only memory, disk or CD etc.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (15)
1. a residence reselecting, comprising:
Subscriber equipment receives the system information block of base station broadcast, and system information block comprises different cell reselection parameters corresponding to the subscriber equipment of different ability;
Subscriber equipment, according to self-ability, chooses corresponding cell reselection parameters from this system information block;
Subscriber equipment carries out cell reselection according to the cell reselection parameters chosen.
2. method according to claim 1, is characterized in that, described subscriber equipment receives the system information block of base station broadcast, and the different cell reselection parameters that system information block comprises the subscriber equipment of different ability corresponding comprises:
Subscriber equipment receives the system information block SIB4 of base station broadcast, and SIB4 comprises different co-frequency neighbor cell side-play amounts corresponding to the subscriber equipment of different ability;
Wherein, the subscriber equipment of different ability comprises: the subscriber equipment not supporting cell range to expand, support cell range expansion but do not support disturb eliminate subscriber equipment, support cell range expansion and support interference eliminate subscriber equipment.
3. method according to claim 1, is characterized in that, described subscriber equipment receives the system information block of base station broadcast, and the different cell reselection parameters that system information block comprises the subscriber equipment of different ability corresponding comprises:
Subscriber equipment receives the system information block SIB5 of base station broadcast, and SIB5 comprises different alien-frequency district side-play amounts corresponding to the subscriber equipment of different ability;
Wherein, the subscriber equipment of different ability comprises: single mode subscriber equipment, multimode user equipment.
4. the method according to any one of claim 1-3, is characterized in that, described subscriber equipment carries out cell reselection according to the cell reselection parameters chosen and comprises:
Subscriber equipment calculates the R value of adjacent cell according to the side-play amount chosen, and carries out cell reselection according to the R value of adjacent cell and the R value of Serving cell.
5. a residence reselecting, comprising:
Base station arranges different cell reselection parameters for the subscriber equipment of different ability;
System information block broadcast cell reselecting parameters is passed through in base station, so that subscriber equipment carries out cell reselection according to the cell reselection parameters corresponding to self-ability.
6. method according to claim 5, is characterized in that, described base station is comprised by system information block broadcast cell reselecting parameters:
Different co-frequency neighbor cell side-play amounts corresponding to the subscriber equipment of different ability is broadcasted by system information block SIB4 in base station;
Wherein, the subscriber equipment of different ability comprises: the subscriber equipment not supporting cell range to expand, support cell range expansion but do not support disturb eliminate subscriber equipment, support cell range expansion and support interference eliminate subscriber equipment.
7. method according to claim 5, is characterized in that, described base station is comprised by system information block broadcast cell reselecting parameters:
Different alien-frequency district side-play amounts corresponding to the subscriber equipment of different ability is broadcasted by system information block SIB5 in base station;
Wherein, the subscriber equipment of different ability comprises: single mode subscriber equipment, multimode user equipment.
8. a subscriber equipment, comprising:
Parameter receiver module, for receiving the system information block of base station broadcast, system information block comprises different cell reselection parameters corresponding to the subscriber equipment of different ability;
Parameter selecting module, for according to self-ability, chooses corresponding cell reselection parameters from this system information block;
Cell reselection module, for carrying out cell reselection according to the cell reselection parameters chosen.
9. subscriber equipment according to claim 8, is characterized in that, described parameter receiver module, specifically for:
Receive the system information block SIB4 of base station broadcast, SIB4 comprises different co-frequency neighbor cell side-play amounts corresponding to the subscriber equipment of different ability;
Wherein, the subscriber equipment of different ability comprises: the subscriber equipment not supporting cell range to expand, support cell range expansion but do not support disturb eliminate subscriber equipment, support cell range expansion and support interference eliminate subscriber equipment.
10. subscriber equipment according to claim 8, is characterized in that, described parameter receiver module, specifically for:
Receive the system information block SIB5 of base station broadcast, SIB5 comprises different alien-frequency district side-play amounts corresponding to the subscriber equipment of different ability;
Wherein, the subscriber equipment of different ability comprises: single mode subscriber equipment, multimode user equipment.
11. subscriber equipmenies according to Claim 8 described in-10 any one, is characterized in that, described cell reselection module, specifically for:
Calculate the R value of adjacent cell according to the side-play amount chosen, and carry out cell reselection according to the R value of adjacent cell and the R value of Serving cell.
12. 1 kinds of base stations, comprising:
Parameter setting module, for arranging different cell reselection parameters for the subscriber equipment of different ability;
Parameter broadcast module, for by system information block broadcast cell reselecting parameters, so that subscriber equipment carries out cell reselection according to the cell reselection parameters corresponding to self-ability.
13. base stations according to claim 12, is characterized in that, described parameter broadcast module, specifically for:
Different co-frequency neighbor cell side-play amounts corresponding to the subscriber equipment of different ability is broadcasted by system information block SIB4;
Wherein, the subscriber equipment of different ability comprises: the subscriber equipment not supporting cell range to expand, support cell range expansion but do not support disturb eliminate subscriber equipment, support cell range expansion and support interference eliminate subscriber equipment.
14. base stations according to claim 12, is characterized in that, described parameter broadcast module, specifically for:
Different alien-frequency district side-play amounts corresponding to the subscriber equipment of different ability is broadcasted by system information block SIB5;
Wherein, the subscriber equipment of different ability comprises: single mode subscriber equipment, multimode user equipment.
15. 1 kinds of cell reselection system, comprising: the subscriber equipment described in any one of claim 8-11 and the base station described in any one of claim 12-14.
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| CN104735733B (en) | 2019-04-23 |
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