CN102833806A - Method and device for cell switching - Google Patents
Method and device for cell switching Download PDFInfo
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Abstract
The invention provides a method and a device for cell switching under a multi-carrier same-coverage hierarchical networking scene. The cell switching method includes: determining user equipment to start switching from a source cell to a target cell, wherein the source cell and the target cell are both cells in a communication network of the multi-carrier same-coverage hierarchical networking and both comprises multiple multi-carrier same-coverage cells; respectively acquiring measuring interference rate of the multiple multi-carrier same-coverage cells in the target cell, wherein the measuring interference rate is used for indicating a ratio of a RSRP (reference signal received power) measuring relative value to an interference value of the cell; determining a target switching cell according to the measuring interference rate of the multiple multi-carrier same-coverage cells; and switching the user equipment from the source cell to the determined target switching cell. By the method and the device for cell switching, same-frequency interference of a system can be lowered, and the switching success rate can be improved.
Description
Technical field
The application relates to communication technical field, particularly relates to a kind of multicarrier with the cell switching method and the device that cover under the layering networking scene.
Background technology
The LTE multicarrier with cover networking be meant use on every sector directions 2 carrier waves or more multicarrier (each carrier wave is a LTE sub-district) cover networking.Be example with 2 carrier networkings, as shown in Figure 1, carrier frequency is respectively F1 and F2, and F1 and F2 cover identical zone.2 carrier waves with overlay network in, prepare when Target cell switches when UE (User Equipment, subscriber equipment) moves to cell edge and since each zone all be 2 carrier waves with covering, UE can have two switching target small areas that meet the demands at this moment.
In existing handover scheme, be example still with 2 carrier networkings, its switch decision flow process is as shown in Figure 2, comprising: step S102: base station (like eNB) receives 2 with the measurement report that covers the adjacent area; Step S104: after the measurement report that UE reports is received in the base station; Judge RSRP (the Reference Signal Receiving Power of adjacent area; Reference Signal Received Power) whether measured value (like the RSRP level) satisfies handoff threshold, as not satisfying handoff threshold, does not then carry out hand-off process; As satisfy handoff threshold, then execution in step S106; Step S106: satisfy handoff threshold, initiate to switch to base station, Target cell place; Step S108: for covering networking together, UE can report the measurement report of 2 adjacent areas simultaneously, and base station meeting this moment is judgement adjacent area frequency priority earlier, if frequency priority is inequality, then selects the high sub-district of frequency priority as switching target small area; If frequency priority is identical, then execution in step S 110; Step S 110: relatively whether the RSRP measured value of adjacent area is identical, if inequality, then selects a high relatively adjacent sub-district of RSRP level as switching target small area and issue switching command; If two adjacent area RSRP with covering are identical, then can select one at random as switching target small area.
Above-mentioned existing handover scheme is analyzed, can be found out that existing switch determining method only considered the condition of adjacent area RSRP measured value as switch decision, do not consider the disturbed condition of Target cell.For when covering the layering networking, exist the contiguous network of 2 frequencies (or more than) to cover, owing to external disturbance, load and UE position reason on an equal basis, the interference that receives on these 2 frequencies of synchronization is different.Single method of carrying out the switching target small area judgement according to adjacent area RSRP value may be excessive owing to selected Target cell interference, causes the handoff procedure failure of UE in the Target cell side, thereby influence handover success rate.
Summary of the invention
The application provides a kind of multicarrier with the cell switching method and the device that cover under the layering networking scene; To solve the existing multicarrier that carries out when switching with coverage cell; Because it is excessive that selected Target cell disturbs, cause the problem of UE in the handoff procedure failure of Target cell side.
In order to address the above problem; The application discloses a kind of cell switching method; Comprise: confirm that subscriber equipment switches from the cell-of-origin to the Target cell initiation; Wherein, said cell-of-origin and said Target cell are multicarrier with the sub-district in the communication network that covers the layering networking, and said cell-of-origin and said Target cell include the same coverage cell of a plurality of multicarriers; Obtain said a plurality of multicarriers in the said Target cell respectively with the measurement interference ratio of coverage cell, the Reference Signal Received Power RSRP that said measurement interference ratio is used for indicating cell measures the ratio of the interference value of relative value and this sub-district; According to the comparative result of the said a plurality of multicarriers in the said Target cell, confirm the target switching cell with the said measurement interference ratio of coverage cell; Said subscriber equipment is switched from said cell-of-origin to the said target switching cell of confirming.
Preferably; Each multicarrier in the said Target cell obtains through following formula with the measurement interference ratio of coverage cell: SOI=RSRP_R/I, and wherein, SOI representes to measure interference ratio; RSRP_R representes that the RSRP of this sub-district measures relative value, and I representes the interference value of this sub-district.
Preferably, said RSRP_R obtains through following formula: RSRP_R=RSRP_N-RSRP_S, and wherein, RSRP_N representes that the RSRP of this sub-district measures level, RSRP_S representes in the said cell-of-origin and the levels of service of the corresponding multicarrier in this sub-district with coverage cell.
Preferably, said I obtains in the following manner: use each multicarrier in the said cell-of-origin with the interference value of coverage cell, as corresponding each multicarrier in the said Target cell with the interference value of coverage cell.
Preferably, said I obtains in the following manner: through X2 interface, obtain each multicarrier in the said Target cell that the base station of said Target cell sends with the interference value of coverage cell.
Preferably; Said according to the comparative result of the said a plurality of multicarriers in the said Target cell with the said measurement interference ratio of coverage cell; The step of confirming the target switching cell comprises: the said a plurality of multicarriers in the more said Target cell are with the measurement interference ratio of coverage cell, and definite maximum sub-district of ratio of wherein measuring interference ratio is said target switching cell.
Preferably, before the said step of said a plurality of multicarriers with the measurement interference ratio of coverage cell of obtaining respectively in the said Target cell, also comprise: whether the said a plurality of multicarriers in the more said Target cell are identical with the frequency priority of coverage cell; If different, then select the highest sub-district of frequency priority as said target switching cell, carry out the said step that said subscriber equipment is switched to the said target switching cell of confirming from said cell-of-origin; If identical, then carry out and saidly obtain said a plurality of multicarriers in the said Target cell respectively with the step of the measurement interference ratio of coverage cell.
In order to address the above problem; Disclosed herein as well is a kind of sub-district switching device shifter; Comprise: initiation module is used for confirming that subscriber equipment switches from the cell-of-origin to the Target cell initiation, wherein; Said cell-of-origin and said Target cell are multicarrier with the sub-district in the communication network that covers the layering networking, and said cell-of-origin and said Target cell include the same coverage cell of a plurality of multicarriers; Acquisition module is used for obtaining respectively the measurement interference ratio of said a plurality of multicarriers of said Target cell with coverage cell, and the Reference Signal Received Power RSRP that said measurement interference ratio is used for indicating cell measures the ratio of the interference value of relative value and this sub-district; Determination module is used for confirming the target switching cell according to said a plurality of multicarriers of said Target cell comparative result with the said measurement interference ratio of coverage cell; Handover module is used for said subscriber equipment is switched from said cell-of-origin to the said target switching cell of confirming.
Preferably; Said acquisition module obtains each multicarrier in the said Target cell with the measurement interference ratio of coverage cell: SOI=RSRP_R/I through following formula, and wherein, SOI representes to measure interference ratio; RSRP_R representes that the RSRP of this sub-district measures relative value, and I representes the interference value of this sub-district.
Preferably; Said acquisition module obtains said RSRP_R:RSRP_R=RSRP_N-RSRP_S through following formula; Wherein, RSRP_N representes that the RSRP of this sub-district measures level, and RSRP_S representes in the said cell-of-origin and the levels of service of the corresponding multicarrier in this sub-district with coverage cell.
Preferably, said acquisition module obtains said I in the following manner: use each multicarrier in the said cell-of-origin with the interference value of coverage cell, as corresponding each multicarrier in the said Target cell with the interference value of coverage cell.
Compared with prior art, the application has the following advantages:
The application uses the measurement interference ratio of sub-district, with the ratio of the interference value of the RSRP measured value of indicating cell and this sub-district, confirms the disturbed condition of Target cell through measuring interference ratio; And then through a plurality of multicarriers in the Target cell are with the comparison of the measurement interference ratio of coverage cell under the layering networking scene with covering to multicarrier, the less relatively target switching cell of definite interference carries out the sub-district and switches.Through the application's scheme, in cell switch process, taken all factors into consideration the disturbed condition of Target cell, help UE and be directly switch on the less relatively target switching cell of interference, the same frequency that reduces system disturbs, and promotes handover success rate.
Description of drawings
Fig. 1 is the sketch mapes of a kind of 2 carrier waves of prior art with the communication network that covers the layering networking;
Fig. 2 is that a kind of 2 carrier waves of prior art carry out the flow chart that switch the sub-district with the communication network that covers the layering networking;
Fig. 3 is the flow chart of steps according to a kind of cell switching method of the application embodiment one;
Fig. 4 is the flow chart of steps according to a kind of cell switching method of the application embodiment two;
Fig. 5 is the flow chart of steps according to a kind of cell switching method of the application embodiment three;
Fig. 6 is the structured flowchart according to a kind of sub-district switching device shifter of the application embodiment four.
Embodiment
For above-mentioned purpose, the feature and advantage that make the application can be more obviously understandable, the application is done further detailed explanation below in conjunction with accompanying drawing and embodiment.
Embodiment one
With reference to Fig. 3, show flow chart of steps according to a kind of cell switching method of the application embodiment one.
The multicarrier of present embodiment may further comprise the steps with the cell switching method that covers under the layering networking scene:
Step S202: the base station confirms that UE initiates to switch from the cell-of-origin to Target cell.
Wherein, cell-of-origin and Target cell are multicarrier with the sub-district in the communication network that covers the layering networking, and cell-of-origin and Target cell include the same coverage cell of a plurality of multicarriers.
Step S204: the base station obtains a plurality of multicarriers in the Target cell respectively with the measurement interference ratio of coverage cell.
Measure the ratio that RSRP that interference ratio is used for indicating cell measures the interference value of relative value and same sub-district.Through measuring interference ratio, can know the disturbed condition of this sub-district.
Step S206: the target switching cell is confirmed according to the comparative result of a plurality of multicarriers in the Target cell with the measurement interference ratio of coverage cell in the base station.
Through the measurement interference ratio of a plurality of multicarriers in the comparison object sub-district with coverage cell, can be from a plurality of multicarriers with confirming to disturb less relatively target switching cell the coverage cell.
Step S208: switch UE the base station from the cell-of-origin to the target switching cell of confirming.
Through present embodiment, use the measurement interference ratio of sub-district, with the RSRP measured value of indicating cell and the ratio of the interference value of this sub-district, confirm the disturbed condition of Target cell through the measurement interference ratio; And then through a plurality of multicarriers in the Target cell are with the comparison of the measurement interference ratio of coverage cell under the layering networking scene with covering to multicarrier, the less relatively target switching cell of definite interference carries out the sub-district and switches.Through the scheme of present embodiment, in cell switch process, taken all factors into consideration the disturbed condition of Target cell, help UE and be directly switch on the less relatively target switching cell of interference, the same frequency that reduces system disturbs, and promotes handover success rate.
Embodiment two
With reference to Fig. 4, show flow chart of steps according to a kind of cell switching method of the application embodiment two.
The multicarrier of present embodiment may further comprise the steps with the cell switching method that covers under the layering networking scene:
Step S302: the base station confirms that UE initiates to switch from the cell-of-origin to Target cell.
In the present embodiment, cell-of-origin and Target cell are multicarrier with the sub-district in the communication network that covers the layering networking, and cell-of-origin and Target cell include the same coverage cell of a plurality of multicarriers.
Step S304: the base station obtains a plurality of multicarriers in the Target cell respectively with the measurement interference ratio of coverage cell.
Introduce " measurement interference ratio " this parameter, use, represent with SOI in order to synthetic determination switching target small area in cell switch process.In the present embodiment; The measurement interference ratio of a sub-district is meant that the RSRP of the adjacent sub-district adjacent with this sub-district (like the same coverage cell of a plurality of multicarriers in the Target cell adjacent with the cell-of-origin in the present embodiment) measures relative value and the ratio that is interfered; The resultant effect of this big more representative nearby region measurement level of value and interference level is good more; Very strong such as the RSRP signal, disturb very little; Otherwise the resultant effect that then means the adjacent area is relatively poor, such as be disturb very big, perhaps the RSRP signal relatively a little less than.
In the present embodiment, through the measurement interference ratio of each multicarrier in formula (1) the acquisition Target cell with coverage cell.That is:
SOI=RSRP_R/I formula (1)
Wherein, I is the interference value that the adjacent area receives, and comprises uplink interference and descending interference, is obtained by eNB measurement and statistics; RSRP_R is that adjacent area (like the same coverage cell of each multicarrier in the Target cell in the present embodiment) RSRP that UE reports measures the relative value of level (representing with RSRP_N) with respect to local area (like the same coverage cell of each multicarrier corresponding in the cell-of-origin in the present embodiment) levels of service (representing with RSRP_S), that is:
RSRP_R=RSRP_N-RSRP_S formula (2)
LTE is a minizone mutual interference system, disturbs during identical networking mainly from neighbor cell, as covering the layering networking together for 2 carrier waves, is equal to 2 LTE common-frequency networks of existence.In order to obtain the disturbed condition that receives of Target cell; Also promptly, obtain adjacent area interference value I, can pass through the X2 interface alternant way; By Target cell interfere information is sended over; That is, the base station of sub-district, current place is through X2 interface, obtains each multicarrier in the Target cell that the base station of Target cell sends with the interference value of coverage cell.Though this mode can be obtained interference value, needs interactive interfacing, time delay is bigger, can not in time react the disturbed condition when switching.
For this reason; Reciprocity of disturbing according to identical networking in the present embodiment and UE switch the actual conditions that the former Serving cell in back will change interfered cell into; Adopt the interferometry information of sector, UE place (as two sub-districts that cover) to substitute the interference of estimating adjacent sub-district, satisfy the requirement that interfere information obtains promptness.Also promptly, use each multicarrier in the cell-of-origin with the interference value of coverage cell, as corresponding each multicarrier in the Target cell with the interference value of coverage cell.
Be example with covering the layering networking still with 2 carrier waves; According to the overlay network structure; Two sub-districts (sub-district 1 and sub-district 2) of sector, UE place belong to same base station; Suppose that UE switches anteposition in the sub-district 1, adjacent area (like the adjacent area A) disturbed condition that obtains on the 1 place frequency of sub-district can directly measured and add up in sub-district 1 so; Sub-district 2 can directly be measured and add up the adjacent area (like adjacent area B) that obtains on the 2 place frequencies of sub-district and disturb, and like this through communication in the base station, sub-district 1 can obtain adjacent area (like adjacent area A and the B) disturbed condition of sub-district 2 place frequencies.Use formula to be expressed as: SOI
A=RSRP_R
A/ I
1SOI
B=RSRP_R
B/ I
2Wherein, SOI
AThe measurement interference ratio of expression adjacent area A, RSRP_R
AThe RSRP of expression adjacent area A measures relative value, I
1The interference value of then representing sub-district 1; Equally, SOI
BThe measurement interference ratio of expression adjacent area B, RSRP_R
BThe RSRP of expression adjacent area B measures relative value, I
2The interference value of then representing sub-district 2.
Step S306: a plurality of multicarriers in the comparison object sub-district, base station are with the measurement interference ratio of coverage cell, and definite maximum sub-district of ratio of wherein measuring interference ratio is the target switching cell.
Be example with covering the layering networking still, in the switch decision process, compare the SOI value on 2 target frequencies, select the big sub-district of SOI value, accomplish handoff procedure as the target switching cell with 2 carrier waves.
But those skilled in the art should understand; In actual use; For covering the situation of layering networking together more than the multicarrier of 2 carrier waves, what also might select is not the maximum sub-district of ratio of measuring interference ratio, but selects appropriate cell according to actual conditions; As not satisfying other switch decision conditioned disjunction when target side is rejected, can select to measure time big sub-district of the ratio of interference ratio etc. when measuring the maximum sub-district of interference ratio.
Step S308: switch UE the base station from the cell-of-origin to the target switching cell of confirming.
Through present embodiment, in cell switch process, taken all factors into consideration the disturbed condition of Target cell, help UE and be directly switch on the less relatively target switching cell of interference, the same frequency that reduces system disturbs, and promotes handover success rate.
Embodiment three
With reference to Fig. 5, show flow chart of steps according to a kind of cell switching method of the application embodiment three.
Present embodiment switches to example with 2 carrier waves with the sub-district that covers under the layering networking scene, and the application's multicarrier is switched and describes with covering sub-district under the layering networking scene.But it should be understood by those skilled in the art that more than the multicarrier under 2 carrier case and all can carry out with reference to present embodiment with the sub-district switching that covers under the layering networking scene.
The multicarrier of present embodiment may further comprise the steps with the cell switching method that covers under the layering networking scene:
Step S402:UE reports the handover measurement report, and wherein having with 2 adjacent area RSRP measured values that cover is the RSRP level.
Step S404: whether the adjacent area RSRP level that the base station relatively reports satisfies switching condition, if do not satisfy, does not then carry out hand-off process; If satisfy, then carry out step S406.
If adjacent area RSRP level satisfies switching condition, then the base station can confirm that UE initiates to switch from the cell-of-origin to Target cell.
Step S406: the Target cell judgement of base station triggers handoff procedure.
Step S408: whether the frequency priority that the adjacent area is compared in the base station is identical, if different, then carries out step S410; If identical, then carry out step S412.
Step S410: hand-off process is carried out as the target switching cell in the highest sub-district of base station selected frequency priority, finishes this switching flow.
Step S412: the size of the measurement interference ratio of adjacent area is calculated in the base station, and relatively ordering.
Wherein, measure the calculating of interference ratio and can adopt the mode in the previous embodiment, do not describing in detail at this.
Step S414: base station selected measurement disturbs the maximum sub-district of ratio to carry out hand-off process as the target switching cell.
Pass through present embodiment; Adopting adjacent area RSRP to judge on the basis; With reference to adjacent area interference the carrying out judgement and the switching of target switching cell; Taken all factors into consideration adjacent area RSRP measured value and frequency disturbed condition and selected to judge switching target small area, UE can be switched on the less relatively sub-district, frequency place of interference.
Embodiment four
With reference to Fig. 6, show structured flowchart according to a kind of sub-district switching device shifter of the application embodiment four.
The sub-district switching device shifter of present embodiment can be arranged in the base station; This sub-district switching device shifter comprises: initiation module 502; Be used for confirming that UE initiates to switch from the cell-of-origin to Target cell; Wherein, cell-of-origin and Target cell are multicarrier with the sub-district in the communication network that covers the layering networking, and cell-of-origin and Target cell include the same coverage cell of a plurality of multicarriers; Acquisition module 504 is used for obtaining respectively the measurement interference ratio of a plurality of multicarriers of Target cell with coverage cell, and the RSRP that this measurement interference ratio is used for indicating cell measures the ratio of the interference value of relative value and this sub-district; Determination module 506 is used for confirming the target switching cell according to a plurality of multicarriers of Target cell comparative result with the measurement interference ratio of coverage cell; Handover module 508 is used for UE is switched from the cell-of-origin to the target switching cell of confirming.
Preferably; Acquisition module 504 obtains each multicarrier in the Target cell with the measurement interference ratio of coverage cell: SOI=RSRP_R/I through following formula; Wherein, SOI representes to measure interference ratio, and RSRP_R representes that the RSRP of this sub-district in the Target cell measures relative value, and I representes the interference value of this sub-district.
Preferably, acquisition module 504 obtains RSRP_R through following formula:
RSRP_R=RSRP_N－RSRP_S，
Wherein, RSRP_N representes that the RSRP of this sub-district in the Target cell measures level, and RSRP_S representes in the cell-of-origin and the levels of service of the corresponding multicarrier in this sub-district with coverage cell.
Preferably, acquisition module 504 obtains interference value I in the following manner: use each multicarrier in the cell-of-origin with the interference value of coverage cell, as corresponding each multicarrier in the Target cell with the interference value of coverage cell.
Preferably, acquisition module 504 can also pass through X2 interface, obtains each multicarrier in the Target cell that the base station of Target cell sends with the interference value of coverage cell.
Preferably, determination module 506 is used for the measurement interference ratio of a plurality of multicarriers of comparison object sub-district with coverage cell, and definite maximum sub-district of ratio of wherein measuring interference ratio is the target switching cell.
Preferably; The sub-district switching device shifter of present embodiment also comprises: judge module 510; Be used for before said acquisition module 504 obtains the measurement interference ratio of a plurality of multicarriers with coverage cell of Target cell respectively, whether a plurality of multicarriers in the comparison object sub-district are identical with the frequency priority of coverage cell; If different, then select the highest sub-district of frequency priority as the target switching cell, change said handover module 508 over to UE is switched from the cell-of-origin to the target switching cell of confirming; If identical, then change said acquisition module 504 over to and carry out.
The sub-district switching device shifter of present embodiment is used for realizing the corresponding cell switching method of aforementioned a plurality of method embodiment, and has the beneficial effect of corresponding method embodiment, repeats no more at this.
The application provides a kind of 2 frequencies (or multifrequency point) TD-LTE/FD-LTE that is used for the sub-district handover scheme that covers under the layering networking scene, is particularly useful for TD-LTE with covering under the layering networking scene.This scheme has been improved the decision method with switching target small area under the coverage condition, and the mode that comprehensive reference adjacent area RSRP measures and disturbed condition is judged is provided; The method of judging disturbed condition on the switching target small area frequency with current sector interference situation is provided; The computing formula of measuring interference ratio is provided, has been used for handoff procedure and calculates and compare.Scheme through the application; With covering under the layering networking scene, the disturbed condition on each carrier wave that eNB obtains according to self has been taken all factors into consideration the disturbed condition of Target cell in handoff procedure at the LTE system multi-carrier; Select to disturb the Target cell frequency of less frequency as the UE switching; Help UE and be directly switch on the less relatively Target cell of interference, the same frequency that reduces before and after switching disturbs, and promotes handover success rate.
Each embodiment in this specification all adopts the mode of going forward one by one to describe, and what each embodiment stressed all is and the difference of other embodiment that identical similar part is mutually referring to getting final product between each embodiment.For device embodiment, because it is similar basically with method embodiment, so description is fairly simple, relevant part gets final product referring to the part explanation of method embodiment.
More than to a kind of multicarrier that the application provided with the cell switching method and the device that cover under the layering networking scene; Carried out detailed introduction; Used concrete example among this paper the application's principle and execution mode are set forth, the explanation of above embodiment just is used to help to understand the application's method and core concept thereof; Simultaneously, for one of ordinary skill in the art, according to the application's thought, the part that on embodiment and range of application, all can change, in sum, this description should not be construed as the restriction to the application.
Claims (11)
1. a cell switching method is characterized in that, comprising:
Confirm that subscriber equipment switches from the cell-of-origin to the Target cell initiation; Wherein, Said cell-of-origin and said Target cell are multicarrier with the sub-district in the communication network that covers the layering networking, and said cell-of-origin and said Target cell include the same coverage cell of a plurality of multicarriers;
Obtain said a plurality of multicarriers in the said Target cell respectively with the measurement interference ratio of coverage cell, the Reference Signal Received Power RSRP that said measurement interference ratio is used for indicating cell measures the ratio of the interference value of relative value and this sub-district;
According to the comparative result of the said a plurality of multicarriers in the said Target cell, confirm the target switching cell with the said measurement interference ratio of coverage cell;
Said subscriber equipment is switched from said cell-of-origin to the said target switching cell of confirming.
2. method according to claim 1; It is characterized in that; Each multicarrier in the said Target cell obtains through following formula with the measurement interference ratio of coverage cell: SOI=RSRP_R/I, and wherein, SOI representes to measure interference ratio; RSRP_R representes that the RSRP of this sub-district measures relative value, and I representes the interference value of this sub-district.
3. method according to claim 2; It is characterized in that; Said RSRP_R obtains through following formula: RSRP_R=RSRP_N-RSRP_S; Wherein, RSRP_N representes that the RSRP of this sub-district measures level, and RSRP_S representes in the said cell-of-origin and the levels of service of the corresponding multicarrier in this sub-district with coverage cell.
4. method according to claim 2; It is characterized in that; Said I obtains in the following manner: use each multicarrier in the said cell-of-origin with the interference value of coverage cell, as corresponding each multicarrier in the said Target cell with the interference value of coverage cell.
5. method according to claim 2 is characterized in that, said I obtains in the following manner:
Through X2 interface, obtain each multicarrier in the said Target cell that the base station of said Target cell sends with the interference value of coverage cell.
6. method according to claim 1 is characterized in that, and is said according to the comparative result of the said a plurality of multicarriers in the said Target cell with the said measurement interference ratio of coverage cell, confirms that the step of target switching cell comprises:
Said a plurality of multicarriers in the more said Target cell are with the measurement interference ratio of coverage cell, and definite maximum sub-district of ratio of wherein measuring interference ratio is said target switching cell.
7. method according to claim 1 is characterized in that, before the said step of said a plurality of multicarriers with the measurement interference ratio of coverage cell of obtaining respectively in the said Target cell, also comprises:
Whether the said a plurality of multicarriers in the more said Target cell are identical with the frequency priority of coverage cell;
If different, then select the highest sub-district of frequency priority as said target switching cell, carry out the said step that said subscriber equipment is switched to the said target switching cell of confirming from said cell-of-origin;
If identical, then carry out and saidly obtain said a plurality of multicarriers in the said Target cell respectively with the step of the measurement interference ratio of coverage cell.
8. a sub-district switching device shifter is characterized in that, comprising:
Initiation module; Be used for confirming that subscriber equipment switches from the cell-of-origin to the Target cell initiation; Wherein, said cell-of-origin and said Target cell are multicarrier with the sub-district in the communication network that covers the layering networking, and said cell-of-origin and said Target cell include the same coverage cell of a plurality of multicarriers;
Acquisition module is used for obtaining respectively the measurement interference ratio of said a plurality of multicarriers of said Target cell with coverage cell, and the Reference Signal Received Power RSRP that said measurement interference ratio is used for indicating cell measures the ratio of the interference value of relative value and this sub-district;
Determination module is used for confirming the target switching cell according to said a plurality of multicarriers of said Target cell comparative result with the said measurement interference ratio of coverage cell;
Handover module is used for said subscriber equipment is switched from said cell-of-origin to the said target switching cell of confirming.
9. device according to claim 8; It is characterized in that; Said acquisition module obtains each multicarrier in the said Target cell with the measurement interference ratio of coverage cell: SOI=RSRP_R/I through following formula, and wherein, SOI representes to measure interference ratio; RSRP_R representes that the RSRP of this sub-district measures relative value, and I representes the interference value of this sub-district.
10. device according to claim 9; It is characterized in that; Said acquisition module obtains said RSRP_R:RSRP_R=RSRP_N-RSRP_S through following formula; Wherein, RSRP_N representes that the RSRP of this sub-district measures level, and RSRP_S representes in the said cell-of-origin and the levels of service of the corresponding multicarrier in this sub-district with coverage cell.
11. device according to claim 9; It is characterized in that; Said acquisition module obtains said I in the following manner: use each multicarrier in the said cell-of-origin with the interference value of coverage cell, as corresponding each multicarrier in the said Target cell with the interference value of coverage cell.
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103826271A (en) * | 2014-02-24 | 2014-05-28 | 大唐移动通信设备有限公司 | Cell switching method and device |
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| CN107659943A (en) * | 2016-07-26 | 2018-02-02 | 大唐移动通信设备有限公司 | A kind of load equalization method and device |
| CN109729534A (en) * | 2017-10-27 | 2019-05-07 | 普天信息技术有限公司 | One kind is the same as covering alien-frequency district generation method and device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105122886A (en) * | 2013-03-08 | 2015-12-02 | 诺基亚技术有限公司 | Method and apparatus for handover of device-to-device communications |
| CN105122886B (en) * | 2013-03-08 | 2019-03-08 | 诺基亚技术有限公司 | The method and apparatus of switching for device-to-device communication |
| CN103826271A (en) * | 2014-02-24 | 2014-05-28 | 大唐移动通信设备有限公司 | Cell switching method and device |
| CN107659943A (en) * | 2016-07-26 | 2018-02-02 | 大唐移动通信设备有限公司 | A kind of load equalization method and device |
| CN107659943B (en) * | 2016-07-26 | 2020-05-22 | 大唐移动通信设备有限公司 | Load balancing method and device |
| CN109729534A (en) * | 2017-10-27 | 2019-05-07 | 普天信息技术有限公司 | One kind is the same as covering alien-frequency district generation method and device |
| CN110868753A (en) * | 2018-08-27 | 2020-03-06 | 成都鼎桥通信技术有限公司 | Resource allocation method, device and system |
| CN110868753B (en) * | 2018-08-27 | 2022-08-12 | 成都鼎桥通信技术有限公司 | Resource allocation method, device and system |
| CN114390605A (en) * | 2020-10-21 | 2022-04-22 | 大唐移动通信设备有限公司 | Switching method, device, equipment and storage medium |
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