CN102378201B - The management method of the community under a kind of carrier aggregation environment and management devices - Google Patents
The management method of the community under a kind of carrier aggregation environment and management devices Download PDFInfo
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Abstract
The invention provides management method and the management devices of the community under a kind of carrier aggregation environment, this management method comprises: steps A, obtains the channel quality parameter measured value of all communities on all carrier waves of all base stations that subscriber equipment measurement obtains; Step B, at least corresponding according to the carrier frequency determination channel quality parameter measured value that channel quality parameter measured value is corresponding correction, and the channel quality parameter measured value utilizing described correction correction corresponding; The carrier frequency that described channel quality parameter measured value is corresponding is higher, and the correction that described channel quality parameter measured value is corresponding is larger; Step C, selects maximum from revised channel quality parameter measured value, and is the main plot of described subscriber equipment by cell configuration corresponding for the revised channel quality parameter measured value with this maximum.Invention increases the Consumer's Experience speed under carrier aggregation environment, also balance the load of each minizone.
Description
Technical field
The present invention relates to mobile communication system, the management method of the community particularly under a kind of carrier aggregation environment and management devices.
Background technology
Third generation partner program (3rdGenerationPartnershipProject, 3GPP) as the vital tissue of moving communicating field, promote G mobile communication (TheThirdGeneration greatly, Standardization 3G), formulate a series of Wideband Code Division Multiple Access (WCDMA) that comprises and access (WideCodeDivisionMultipleAccess, WCDMA), high-speed slender body theory (HighSpeedDownlinkPacketAccess, HSDPA), high speed uplink packet access (HighSpeedUplinkPacketAccess, etc. HSUPA) at interior communications system specifications.
In order to tackle the challenge of broadband access technology, and meet the demand of growing new business, 3GPP will start the standardization effort of 3G Long Term Evolution (LongTermEvolution, LTE) technology in the end of the year 2004.In June, 2008,3GPP completes the technical need report of LTE-A, and propose the minimum essential requirement of LTE-A: downlink peak rates 1Gbps, upstream peak speed 500Mbps, up-downgoing peaks spectrum utilance reaches 15Mbps/Hz and 30Mbps/Hz respectively.These parameters far above the minimum technology demand parameter of ITU, have obvious advantage.
LTE-A supports the discontinuous carrier polymerization in continuous carrier polymerization and frequency band and between frequency band, and maximum energy aggregate bandwidth can reach 100MHz.In order to effectively utilize carrier wave at the LTE-A commercial initial stage, namely ensure that LTE subscriber equipment can access lte-a system, each carrier wave should be able to be configured to the carrier wave with LTE backward compatibility, but does not also get rid of design only by carrier wave that lte-a system uses.Current 3GPP have identified the application scenarios of 12 kinds of carrier aggregation according to the demand of operator, and wherein 4 kinds relate separately to the continuous of FDD and TDD and discontinuous carrier aggregation scene as recent emphasis.In the conceptual phase of LTE-A, the correlative study emphasis of carrier aggregation comprises the availability of frequency spectrum lifting of continuous carrier polymerization, the design etc. of the control channel of the asymmetrical carrier aggregation scene of up-downgoing.
Consider the requirement of LTE-A to new frequency spectrum, operator, while consideration backwards compatibility, must also can consider to introduce new frequency range and radio frequency link.And owing to being separate between these new radio frequency link and existing radio frequency links, so operator has greater flexibility when arranging net.As shown in Figure 1, wherein white ovals shape represents existing community, and the ellipse being filled with oblique line represents new community of introducing.When introducing new cell frequency and being different from existing community, operator can environmentally need the antenna of its correspondence to rotate, and for compensating the border, community of legacy network, thus obtains better throughput and the network coverage.In carrier aggregation system, subscriber equipment is adopted to the mode of combined dispatching between multiple member carrier, usually can obtain ideal system performance.
Another kind of typical application scenarios is under heterogeneous network environment, the base station of the little covering of new laying, such as Microcell (Picocell) and WAP (wireless access point) (RRH) etc., the frequency different with traditional macro base station or frequency range can be used, by and macro base station between connection and information interaction, can carrier aggregation be realized equally, improve power system capacity.
Certainly, carrier aggregation can also have other application scenarios a lot, and the needs according to oneself that operator can be autonomous, such as, consider the factors such as application region, user capability, antenna for base station configuration, use different application scenarioss flexibly.
According to 3GPP standard regulation, the member carrier of subscriber equipment can be divided into two classes: main member carrier (PrimaryComponentCarrier) and time member carrier (SecondaryComponentCarrier).Accordingly, the community that subscriber equipment uses on main member carrier is called as main plot (PrimaryCell, PCell), and the community that secondary member carrier uses is called as time community (SecondaryCell, SCell).A subscriber equipment can use multiple member carriers and the secondary community corresponding to them simultaneously, but can only have a main member carrier and the main plot corresponding to it.When carrying out carrier aggregation, the degree of two kinds of method limit polymerization can be used: absolute value methods and relative value method.When using absolute value methods, after have selected a main plot, only determine whether needing to add/delete candidate time community/time community according to the absolute value of the channel quality parameter of candidate time community/time community on time member carrier; When using relative value method, after have selected a main plot, needing the relativeness of the channel quality parameter comparing main plot and candidate time community/time community, determining whether needing to add/delete candidate time community/time community according to this relativeness.
But in above-mentioned method, the selection for member carrier only considers the factor of channel quality, and it can also be optimized further, to improve Consumer's Experience speed.
Summary of the invention
The object of this invention is to provide management method and the management devices of the community under a kind of carrier aggregation environment, improve the Consumer's Experience speed under carrier aggregation environment.
To achieve these goals, embodiments provide the management method of the community under a kind of carrier aggregation environment, comprising:
Steps A, obtains the channel quality parameter measured value of all communities on all carrier waves of all base stations that subscriber equipment measurement obtains;
Step B, at least corresponding according to the carrier frequency determination channel quality parameter measured value that channel quality parameter measured value is corresponding correction, and the channel quality parameter measured value utilizing described correction correction corresponding; The carrier frequency that described channel quality parameter measured value is corresponding is higher, and the correction that described channel quality parameter measured value is corresponding is larger;
Step C, selects maximum from revised channel quality parameter measured value, and is the main plot of described subscriber equipment by cell configuration corresponding for the revised channel quality parameter measured value with this maximum.
Above-mentioned management method, wherein, described step B is specially:
The carrier frequency corresponding according to channel quality parameter measured value and cell load corresponding to channel quality parameter measured value determine described correction, and the channel quality parameter measured value utilizing described correction correction corresponding;
The cell load that described channel quality parameter measured value is corresponding is lighter, then the correction that described channel quality parameter measured value is corresponding is larger.
Above-mentioned management method, wherein, also comprises:
Step C, obtain time community set to be selected, all communities in described community set to be selected and described main plot all belong to same base station, and the revised channel quality parameter measured value of each community in described community set to be selected with add thresholding be more than or equal to revised channel quality parameter measured value corresponding to main plot with value;
Step D, performs deletion action to the set to be selected of secondary community, makes in the community that each carrier wave is corresponding, the community that the revised channel quality parameter measured value only retained is maximum;
Part or all of cell configuration in the set to be selected of described execution deletion action Hou Ci community is the secondary community of described subscriber equipment by step e.
Above-mentioned management method, wherein, also comprises:
Step F, judge the revised channel quality parameter measured value of existing community of subscriber equipment with delete thresholding whether be less than the revised channel quality parameter measured value of main plot with value;
Step G, revised channel quality parameter measured value in existing community of subscriber equipment and deletion thresholding be less than revised channel quality parameter measured value corresponding to main plot with value time, perform deletion action, make described existing time community not be re-used as the secondary community of described subscriber equipment.
Above-mentioned management method, wherein, in described step C, described in add thresholding and determine according to the load of serving BS, serving BS load is heavier, described in add thresholding less.
Above-mentioned management method, wherein, in described step G, described deletion thresholding is determined according to the load of serving BS, and serving BS load is heavier, and described deletion thresholding is larger.
To achieve these goals, the embodiment of the present invention additionally provides the management devices of the community under a kind of carrier aggregation environment, comprising:
Measured value acquisition module, for obtaining the channel quality parameter measured value of all communities on all carrier waves of all base stations that subscriber equipment measurement obtains;
Correcting module, at least corresponding according to the carrier frequency determination channel quality parameter measured value that channel quality parameter measured value is corresponding correction, and the channel quality parameter measured value utilizing described correction correction corresponding; The carrier frequency that described channel quality parameter measured value is corresponding is higher, and the correction that described channel quality parameter measured value is corresponding is larger;
Cell configuration corresponding for the revised channel quality parameter measured value with this maximum for selecting maximum from revised channel quality parameter measured value, and is the main plot of described subscriber equipment by the first configuration module.
Above-mentioned management devices, wherein, described correcting module is specifically for determining according to carrier frequency corresponding to channel quality parameter measured value and cell load corresponding to channel quality parameter measured value the described correction that channel quality parameter measured value is corresponding, and the channel quality parameter measured value utilizing described correction correction corresponding;
The cell load that described channel quality parameter measured value is corresponding is lighter, then the correction that described channel quality parameter measured value is corresponding is larger.
Above-mentioned management devices, wherein, also comprises:
Set acquisition module, for obtaining time community set to be selected, all communities in described community set to be selected and described main plot all belong to same base station, and the revised channel quality parameter measured value of each community in described community set to be selected with add thresholding be more than or equal to revised channel quality parameter measured value corresponding to main plot with value;
First removing module, for performing deletion action to the set to be selected of secondary community, makes in the community that each carrier wave is corresponding, the community that the revised channel quality parameter measured value only retained is maximum;
Second configuration module, for by the part or all of cell configuration in the set to be selected of described execution deletion action Hou Ci community being the secondary community of described subscriber equipment.
Above-mentioned management devices, wherein, also comprises:
Judge module, for judge the revised channel quality parameter measured value of existing community of subscriber equipment with delete thresholding whether be less than the revised channel quality parameter measured value of main plot with value;
Second removing module, for existing the community at subscriber equipment revised channel quality parameter measured value and deletion thresholding be less than revised channel quality parameter measured value corresponding to main plot with value time, perform deletion action, make described existing time community not be re-used as the secondary community of described subscriber equipment.
Above-mentioned management devices, wherein, described in add thresholding and determine according to the load of serving BS, serving BS load is heavier, described in add thresholding less.
Above-mentioned management devices, wherein, described deletion thresholding is determined according to the load of serving BS, and serving BS load is heavier, and described deletion thresholding is larger.
The embodiment of the present invention has following beneficial effect:
The embodiment of the present invention is revised channel quality parameter measured value by the factor relevant to frequency or frequency and load, and utilize revised measured value to carry out the configuration of main plot, simultaneously, in the embodiment of the present invention, also according to load-factor, the thresholding that secondary community is selected/deleted is adjusted, the embodiment of the present invention not only increases the Consumer's Experience speed under carrier aggregation environment, also balances the load of each minizone.
Accompanying drawing explanation
Fig. 1 is the application scenarios schematic diagram of a kind of carrier aggregation system in prior art;
Fig. 2 is the exploded view of the carrier aggregation system of Fig. 1;
Fig. 3 is the schematic flow sheet of the management method of community under the carrier aggregation environment of the embodiment of the present invention;
Fig. 4-5 is the simulation result schematic diagram of the method for the embodiment of the present invention.
Embodiment
In the embodiment of the present invention, according to the correction that can have an impact to channel quality parameter to revise channel quality parameter, and select member carrier according to revised channel quality parameter, improve the Consumer's Experience speed under carrier aggregation environment.
In the management method of the community under the carrier aggregation environment of the embodiment of the present invention, as shown in Figure 3, comprising:
Step 31, network side obtains the channel quality parameter measured value of all communities on all carrier waves of all base stations that described subscriber equipment measurement obtains;
In carrier aggregation system, the channel quality parameter of certain community that subscriber equipment measurement obtains, with certain base station certain community one_to_one corresponding on certain carrier wave, namely a channel quality parameter uniquely corresponds to base station, a carrier wave and a community.For Fig. 1, the carrier aggregation system shown in Fig. 1 is decomposed on carrier wave and base station, obtain exploded view as shown in Figure 2.Fig. 2 represents that carrier aggregation is carried out respectively in base station 1 ~ 3 on carrier wave CC1 and CC2, and each base station has 3 communities on each carrier, and described channel quality parameter measured value refers to the channel quality parameter of wherein certain community that subscriber equipment measurement obtains.
Step 32, at least corresponding according to the carrier frequency determination channel quality parameter measured value that channel quality parameter measured value is corresponding correction, and the channel quality parameter measured value utilizing described correction correction corresponding;
The carrier frequency that described channel quality parameter measured value is corresponding is higher, then the correction that described channel quality parameter measured value is corresponding is larger;
Step 33, selects maximum from revised channel quality parameter measured value, and is the main plot of described subscriber equipment by the cell configuration corresponding to the revised channel quality parameter measured value with this maximum.
In a particular embodiment of the present invention, this channel quality parameter is RSRP (ReferenceSignalReceivingPower, Reference Signal Received Power).
In a particular embodiment of the present invention, correction that can be only corresponding according to the carrier frequency determination channel quality parameter measured value that channel quality parameter measured value is corresponding, illustrates as follows.
Set up in advance and preserve the corresponding relation between carrier frequency and correction, being respectively 800MHz, 2GHz and 3.5GHz for carrier frequency, its corresponding relation is as follows:
| Carrier wave | Correction |
| Carrier 0(800MHz) | offset 00 |
| Carrier 1(2GHz) | offset 10 |
| Carrier 2(3.5GHz) | offset 20 |
Wherein, offset
00< offset
10< offset
20, that is, carrier frequency is higher, then corresponding correction is larger;
800MHz and 2GHz is respectively for carrier frequency, assuming that subscriber equipment measures following RSRP value, as follows:
RSRP11, the channel quality parameter measured value of the community on the carrier wave 1 (800MHz) of base station 1 that subscriber equipment measurement obtains;
RSRP12, the channel quality parameter measured value of the community on the carrier wave 2 (2GHz) of base station 1 that subscriber equipment measurement obtains;
RSRP21, the channel quality parameter measured value of the community on the carrier wave 1 (800MHz) of base station 2 that subscriber equipment measurement obtains;
RSRP22, the channel quality parameter measured value of the community on the carrier wave 2 (2GHz) of base station 2 that subscriber equipment measurement obtains;
RSRP31, the channel quality parameter measured value of the community on the carrier wave 1 (800MHz) of base station 3 that subscriber equipment measurement obtains;
RSRP32, the channel quality parameter measured value of the community on the carrier wave 2 (2GHz) of base station 3 that subscriber equipment measurement obtains.
If utilize the content of prior art, then network equipment can directly compare RSRP11, RSRP12 ..., RSRP32, and configures the main member carrier of the community corresponding to the maximum in RSRP11 to RSRP32 as subscriber equipment.
But, RSRP self is only considered in above-mentioned scheme, do not consider other factor, and in a particular embodiment of the present invention, after obtaining RSRP11, RSRP12 ..., this series of measured value of RSRP32, can revise measured value according to carrier frequency, revised RSRP measured value is as follows:
RSRP11+offset
00、RSRP12+offset
10、RSRP21+offset
00、RSRP22+offset
10、RSRP31+offset
00、RSRP32+offset
10。
Then from revised RSRP measured value sequence, select a maximum, be assumed to RSRP22+offset
10, then community (community on the carrier wave 2 of base station 2) corresponding to RSRP22 is configured as main plot.
In carrier aggregation system as shown in Figure 1, main plot is decided iff consideration RSRP measured value, just may there is following situation, if a large amount of terminals finds that the RSRP of a certain community A is greater than the RSRP of another community B, but the RSRP difference of reality is all smaller, but these terminals all can select the carrier wave of this community A as main member carrier, a large amount of terminals namely can be caused to be linked into the carrier wave of community A, cause community A heavier loads, and the carrier wave of community B does not have terminal to access, load is very light, in order to avoid the appearance of above-mentioned situation, in a particular embodiment of the present invention, step 32 performs especially by such as under type:
The carrier frequency corresponding according to channel quality parameter measured value and cell load corresponding to channel quality parameter measured value determine the correction that channel quality parameter measured value is corresponding, and the channel quality parameter measured value utilizing described correction correction corresponding;
The carrier frequency that described channel quality parameter measured value is corresponding is higher, then the correction that described channel quality parameter measured value is corresponding is larger;
The cell load that described channel quality parameter measured value is corresponding is lighter, then the correction that described channel quality parameter measured value is corresponding is larger;
By above-mentioned mode, the carrier wave increasing the light community of load is selected to the possibility of main member carrier by terminal, balance cell load.
Be described in detail as follows.
Set up in advance and preserve carrier frequency, corresponding relation between cell load and correction, be respectively 800MHz, 2GHz for carrier frequency, its corresponding relation is as follows:
For in above-mentioned corresponding relation, load of base station divides in order to 4 ranks, but should be understood that, controls more accurately to reach, then load of base station can be divided into more rank.
Wherein:
offset
00＜offset
10＜offset
20，offset
01＜offset
11＜offset
21，offset
02＜offset
12＜offset
22，offset
03＜offset
13＜offset
23；
offset
00＜offset
01＜offset
02＜offset
03，offset
10＜offset
11＜offset
12＜offset
13，offset
20＜offset
21＜offset
22＜offset
23。
800MHz and 2GHz is respectively for carrier frequency, assuming that subscriber equipment measures following RSRP value, as follows:
RSRP11, the channel quality parameter measured value of the community on the carrier wave 1 (800MHz) of base station 1 that subscriber equipment measurement obtains;
RSRP12, the channel quality parameter measured value of the community on the carrier wave 2 (2GHz) of base station 1 that subscriber equipment measurement obtains;
RSRP21, the channel quality parameter measured value of the community on the carrier wave 1 (800MHz) of base station 2 that subscriber equipment measurement obtains;
RSRP22, the channel quality parameter measured value of the community on the carrier wave 2 (2GHz) of base station 2 that subscriber equipment measurement obtains;
RSRP31, the channel quality parameter measured value of the community on the carrier wave 1 (800MHz) of base station 3 that subscriber equipment measurement obtains;
RSRP32, the channel quality parameter measured value of the community on the carrier wave 2 (2GHz) of base station 3 that subscriber equipment measurement obtains.
If utilize the content of prior art, then network equipment can directly compare RSRP11, RSRP12 ..., RSRP32, and configures the main plot of the community corresponding to the maximum in RSRP11 to RSRP32 as subscriber equipment.
But, RSRP self is only considered in above-mentioned scheme, do not consider other factor, and in a particular embodiment of the present invention, after obtaining RSRP11, RSRP12 ..., this series of measured value of RSRP32, can revise measured value according to carrier frequency and loading condition, assuming that RSRP11, RSRP12 ..., cell load that RSRP32 is corresponding are respectively 25%, 35%, 45%, 55%, 65%, 75%, 85%, then revised RSRP measured value is as follows:
RSRP11+offset
00、RSRP12+offset
11、RSRP21+offset
01、RSRP22+offset
12、RSRP31+offset
03、RSRP32+offset
13。
Then from revised RSRP measured value sequence, select a maximum, be assumed to RSRP22+offset
12, then carrier wave (community on the carrier wave 2 of base station 2) corresponding to RSRP22 is configured as main plot.
By above-mentioned mode, the carrier wave increasing the light community of load is selected to the possibility of main member carrier by terminal, balance cell load, also can improve the experience speed of user.
After have selected main plot, need to continue to select time community, can, according to existing method, use revised channel quality parameter measured value to select time community in a particular embodiment of the present invention.
When adopting relative manner, need to arrange a thresholding to obtain time community, specifically comprise the steps:
Obtain a community set to be selected, all communities in described community set to be selected and described main plot all belong to serving BS, and the revised channel quality parameter measured value of each community in described community set to be selected with add thresholding be more than or equal to revised channel quality parameter measured value corresponding to main plot with value;
Deletion action is performed to the set to be selected of secondary community, retains the community that revised channel quality parameter measured value in community corresponding to each member carrier is maximum;
By the secondary community that the part or all of cell configuration in the set to be selected of described execution deletion action Hou Ci community is described subscriber equipment.
When adopting relative manner, need to arrange other thresholding to delete time community, specifically comprise the steps:
Whether what judge the revised channel quality parameter measured value of existing community of subscriber equipment and deletion thresholding is less than revised channel quality parameter measured value corresponding to main plot with value;
Revised channel quality parameter measured value in existing community of subscriber equipment and deletion thresholding be less than revised channel quality parameter measured value corresponding to main plot with value time, perform deletion action, make described existing time community not be re-used as the secondary community of described subscriber equipment.
In a particular embodiment of the present invention, in order to the balance of proof load, the loading condition of base station should be considered, when the heavier loads of base station, should be the more time community of user device configuration as far as possible, and/or the least possible deletion subscriber equipment existing community, certainly, when the load of base station is lighter, it can be the fewer secondary community of user device configuration, and/or many deletion subscriber equipment existing communities, according to above reason, in a particular embodiment of the present invention:
When the set to be selected of acquisition community, add thresholding described in determining according to the load of serving BS further, serving BS load is heavier, described in add thresholding less.
Whether the revised channel quality parameter measured value in the existing time community of judgement is less than revised channel quality parameter measured value corresponding to main plot with deletion thresholding with value, described deletion thresholding is determined further according to the load of serving BS, serving BS load is heavier, and described deletion thresholding is larger.
The management devices of the community under a kind of carrier aggregation environment of the embodiment of the present invention, comprising:
Measured value acquisition module, for obtaining the channel quality parameter measured value of all communities on all carrier waves of all base stations that subscriber equipment measurement obtains;
Correcting module, at least corresponding according to the carrier frequency determination channel quality parameter measured value that channel quality parameter measured value is corresponding correction, and the channel quality parameter measured value utilizing described correction correction corresponding; The carrier frequency that described channel quality parameter measured value is corresponding is higher, and the correction that described channel quality parameter measured value is corresponding is larger;
Cell configuration corresponding for the revised channel quality parameter measured value with this maximum for selecting maximum from revised channel quality parameter measured value, and is the main plot of described subscriber equipment by the first configuration module.
Wherein, described correcting module is specifically for determining according to carrier frequency corresponding to channel quality parameter measured value and cell load corresponding to channel quality parameter measured value the described correction that channel quality parameter measured value is corresponding, and the channel quality parameter measured value utilizing described correction correction corresponding;
The cell load that described channel quality parameter measured value is corresponding is lighter, then the correction that described channel quality parameter measured value is corresponding is larger.
Above-mentioned management devices also comprises:
Set acquisition module, for obtaining time community set to be selected, all communities in described community set to be selected and described main plot all belong to same base station, and the revised channel quality parameter measured value of each community in described community set to be selected with add thresholding be more than or equal to revised channel quality parameter measured value corresponding to main plot with value;
First removing module, for performing deletion action to the set to be selected of secondary community, makes in the community that each carrier wave is corresponding, the community that the revised channel quality parameter measured value only retained is maximum;
Second configuration module, for by the part or all of cell configuration in the set to be selected of described execution deletion action Hou Ci community being the secondary community of described subscriber equipment.
Above-mentioned management devices also comprises:
Judge module, for judge the revised channel quality parameter measured value of existing community of subscriber equipment with delete thresholding whether be less than the revised channel quality parameter measured value of main plot with value;
Second removing module, for existing the community at subscriber equipment revised channel quality parameter measured value and deletion thresholding be less than revised channel quality parameter measured value corresponding to main plot with value time, perform deletion action, make described existing time community not be re-used as the secondary community of described subscriber equipment.
The described thresholding that adds is determined according to the load of serving BS, and serving BS load is heavier, described in add thresholding less.
Described deletion thresholding is determined according to the load of serving BS, and serving BS load is heavier, and described deletion thresholding is larger.
In a particular embodiment of the present invention, relate to adding thresholding and deleting thresholding under the correction of channel quality parameter measured value and different loads, this correction and thresholding can obtain in advance in several ways and preserve, in use table look-at uses afterwards, is described in detail below with the example that is retrieved as of correction.
< obtain manner one >
Outer loop method, when coming into operation in base station, carries out self-adaptative adjustment for information such as experiencing the feedback of speed and current frequency, load for the parameter of initial setting up according to user, and preserves the optimal value obtained for follow-up.
As find the experience rate reduction of user feedback then revise before index word, (as increased) adjustment in the other direction, if find that the experience speed of user feedback improves next time, then continue to (increase) adjustment in the other direction, if find the experience rate reduction of user feedback, then change direction (reduction), but need to reduce adjustment step-length to adjust simultaneously, move in circles according to this, until the experience rate variation of user feedback is less than a thresholding just stop adjustment, and preserve last parameter.
For aforesaid way, need to test in actual environment, load may be limited to, frequency cannot meet at any time, obtain manner two therefore can be adopted to obtain.
< obtain manner two >
Obtained by emulation mode in obtain manner two.
First a simulated environment is created; For establishment simulated environment, now a large amount of simulation softwares can realize, and it belongs to the general knowledge of those skilled in the art, and no further details to be given herein.
Then utilize various different parameter value to be updated in simulated environment to emulate, record optimal performance;
Finally select and preserve one group of parameter corresponding to optimal performance, being applied to real system.
In order to ensure accuracy, as for following form, the interval of one thresholding can be set, then decile, last permutation and combination, a lot of forms may be obtained, point other emulation is carried out to each, finally can obtain an optimum combination, certainly, in order to as far as possible close to optimal performance, what the adjustment step-length of offset can be arranged is thin as far as possible.
As interval [A, B] 10 decile of all offset, then the optimum value obtaining above table needs to carry out 10
12secondary experiment, although test number (TN) is more, for this emulation repeated, by computer automatic execution without any difficulty, so test number (TN)s many again can not become the obstacle obtaining optimal parameter.
For the setting of this interval [A, B], if at beginning indeterminacy section, upper limit B can be arranged larger, as also larger than existing maximum RSRP measured value.
Carrying out emulation to the beneficial effect of the embodiment of the present invention below proves as follows.
Wherein simulation parameter is as follows:
Relation between correction and frequency and load is as shown in the table:
| UE＝3 | UE＝5 | UE＝10 | UE＝15 | UE＝20 | |
| Carrier 0(800MHz) | 0 | -1 | -2 | -3 | -4 |
| Carrier 1(2GHz) | 8.5 | 7.5 | 6.5 | 5.5 | 4.5 |
The relation increasing thresholding/deletion thresholding and load is as shown in the table:
| UE＝3 | UE＝5 | UE＝10 | UE＝15 | UE＝20 | |
| Scenario #1/#2 | 0.1/3.1 | 0.1/3.1 | 0.1/3.1 | 0.1/3.1 | 0.1/3.1 |
| Scenario #3 | 10/13 | 7.1/10.1 | 0.3/3.3 | 0.2/3.2 | 0.1/3.1 |
Certainly, relation between above-mentioned correction and frequency and load and the relation increasing thresholding/deletion thresholding and load are only used for emulating, so the relation between the numerical value of above-mentioned two tables all can not become the relation between correction and frequency and load and the restriction of relation increasing thresholding/deletion thresholding and load.
As shown in Figure 4, for the aerial angle of carrier wave 1 (800MHz) is identical with the aerial angle of carrier wave 2 (2GHz), but cover and not exclusively overlap (scene 2), and the transmission bandwidth of carrier wave 1 is 10MHz, and the simulation result schematic diagram of the transmission bandwidth of carrier wave 2 when being 10MHz, as shown in Figure 4, can find, utilize the subscriber equipment average throughput of the subscriber equipment average throughput of the method for the embodiment of the present invention and combined dispatching mode very nearly the same, but relative to the existing method not revising measured value, rising to of its subscriber equipment average throughput reduces long 100%.
As shown in Figure 5, aerial angle for carrier wave 1 (800MHz) is different from the aerial angle of carrier wave 2 (2GHz) (scene 3), and the transmission bandwidth of carrier wave 1 is 10MHz, and the simulation result schematic diagram of the transmission bandwidth of carrier wave 2 when being 10MHz, as shown in Figure 5, can find, utilize the subscriber equipment average throughput of the subscriber equipment average throughput of the method for the embodiment of the present invention and combined dispatching mode very nearly the same, but relative to the existing method not revising measured value, the growth of its subscriber equipment average throughput clearly, when number of users is less, subscriber equipment average throughput increases particularly evident.
Above simulation results show, the method of the embodiment of the present invention is under various scene, subscriber equipment average throughput can reach a maximum (the subscriber equipment average throughput of combined dispatching mode) all substantially, and subscriber equipment average throughput is relative to not revising measured value, the prior art of uncompensation threshold value has and obviously increases.
The above is only the preferred embodiment of the present invention; it should be pointed out that for those skilled in the art, under the premise without departing from the principles of the invention; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (10)
1. a management method for the community under carrier aggregation environment, is characterized in that, comprising:
Steps A, obtains the channel quality parameter measured value of all communities on all carrier waves of all base stations that subscriber equipment measurement obtains;
Step B, at least corresponding according to the carrier frequency determination channel quality parameter measured value that channel quality parameter measured value is corresponding correction, and the channel quality parameter measured value utilizing described correction correction corresponding; The carrier frequency that described channel quality parameter measured value is corresponding is higher, and the correction that described channel quality parameter measured value is corresponding is larger;
Step C, selects maximum from revised channel quality parameter measured value, and is the main plot of described subscriber equipment by cell configuration corresponding for the revised channel quality parameter measured value with this maximum;
Described step B is specially:
The carrier frequency corresponding according to channel quality parameter measured value and cell load corresponding to channel quality parameter measured value determine described correction, and the channel quality parameter measured value utilizing described correction correction corresponding;
The cell load that described channel quality parameter measured value is corresponding is lighter, then the correction that described channel quality parameter measured value is corresponding is larger.
2. management method according to claim 1, is characterized in that, also comprises:
Step C, obtain time community set to be selected, all communities in described community set to be selected and described main plot all belong to same base station, and the revised channel quality parameter measured value of each community in described community set to be selected with add thresholding be more than or equal to revised channel quality parameter measured value corresponding to main plot with value;
Step D, performs deletion action to the set to be selected of secondary community, makes in the community that each carrier wave is corresponding, the community that the revised channel quality parameter measured value only retained is maximum;
Part or all of cell configuration in the set to be selected of described execution deletion action Hou Ci community is the secondary community of described subscriber equipment by step e.
3. management method according to claim 2, is characterized in that, also comprises:
Step F, judge the revised channel quality parameter measured value of existing community of subscriber equipment with delete thresholding whether be less than the revised channel quality parameter measured value of main plot with value;
Step G, revised channel quality parameter measured value in existing community of subscriber equipment and deletion thresholding be less than revised channel quality parameter measured value corresponding to main plot with value time, perform deletion action, make described existing time community not be re-used as the secondary community of described subscriber equipment.
4. management method according to claim 3, is characterized in that, in described step C, described in add thresholding and determine according to the load of serving BS, serving BS load is heavier, described in add thresholding less.
5. management method according to claim 3, is characterized in that, in described step G, described deletion thresholding is determined according to the load of serving BS, and serving BS load is heavier, and described deletion thresholding is larger.
6. a management devices for the community under carrier aggregation environment, is characterized in that, comprising:
Measured value acquisition module, for obtaining the channel quality parameter measured value of all communities on all carrier waves of all base stations that subscriber equipment measurement obtains;
Correcting module, at least corresponding according to the carrier frequency determination channel quality parameter measured value that channel quality parameter measured value is corresponding correction, and the channel quality parameter measured value utilizing described correction correction corresponding; The carrier frequency that described channel quality parameter measured value is corresponding is higher, and the correction that described channel quality parameter measured value is corresponding is larger;
Cell configuration corresponding for the revised channel quality parameter measured value with this maximum for selecting maximum from revised channel quality parameter measured value, and is the main plot of described subscriber equipment by the first configuration module;
Described correcting module is specifically for determining according to carrier frequency corresponding to channel quality parameter measured value and cell load corresponding to channel quality parameter measured value the described correction that channel quality parameter measured value is corresponding, and the channel quality parameter measured value utilizing described correction correction corresponding;
The cell load that described channel quality parameter measured value is corresponding is lighter, then the correction that described channel quality parameter measured value is corresponding is larger.
7. management devices according to claim 6, is characterized in that, also comprises:
Set acquisition module, for obtaining time community set to be selected, all communities in described community set to be selected and described main plot all belong to same base station, and the revised channel quality parameter measured value of each community in described community set to be selected with add thresholding be more than or equal to revised channel quality parameter measured value corresponding to main plot with value;
First removing module, for performing deletion action to the set to be selected of secondary community, makes in the community that each carrier wave is corresponding, the community that the revised channel quality parameter measured value only retained is maximum;
Second configuration module, for by the part or all of cell configuration in the set to be selected of described execution deletion action Hou Ci community being the secondary community of described subscriber equipment.
8. management devices according to claim 7, is characterized in that, also comprises:
Judge module, for judge the revised channel quality parameter measured value of existing community of subscriber equipment with delete thresholding whether be less than the revised channel quality parameter measured value of main plot with value;
Second removing module, for existing the community at subscriber equipment revised channel quality parameter measured value and deletion thresholding be less than revised channel quality parameter measured value corresponding to main plot with value time, perform deletion action, make described existing time community not be re-used as the secondary community of described subscriber equipment.
9. management devices according to claim 8, is characterized in that, described in add thresholding and determine according to the load of serving BS, serving BS load is heavier, described in add thresholding less.
10. management devices according to claim 8, is characterized in that, described deletion thresholding is determined according to the load of serving BS, and serving BS load is heavier, and described deletion thresholding is larger.
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| CN201010261648.6A CN102378201B (en) | 2010-08-16 | 2010-08-16 | The management method of the community under a kind of carrier aggregation environment and management devices |
| JP2011177448A JP5820186B2 (en) | 2010-08-16 | 2011-08-15 | Cell management method and management apparatus in carrier aggregation environment |
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| JP5416820B1 (en) * | 2012-10-05 | 2014-02-12 | 株式会社Ｎｔｔドコモ | Wireless communication system, wireless base station, and wireless communication method |
| EP2797364B1 (en) * | 2013-04-22 | 2016-04-13 | Alcatel Lucent | A method for allocation of frequency resources of different operators to user terminals, and a base station and a user terminal therefor |
| JP6732184B2 (en) * | 2015-04-10 | 2020-07-29 | 京セラ株式会社 | User terminal and mobile communication method |
| CN107801192B (en) * | 2016-09-07 | 2021-05-14 | 中国联合网络通信集团有限公司 | Carrier aggregation secondary cell configuration method, base station and network system |
| CN108076490B (en) * | 2016-11-18 | 2020-07-03 | 展讯通信（上海）有限公司 | Method and device for realizing continuity of single radio frequency voice call and mobile terminal |
| JP7081555B2 (en) * | 2019-04-02 | 2022-06-07 | 日本電信電話株式会社 | Station placement support method and station placement support system |
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