CN102572894B - Method and device for selecting interference cells - Google Patents
Method and device for selecting interference cells Download PDFInfo
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- CN102572894B CN102572894B CN201110455675.1A CN201110455675A CN102572894B CN 102572894 B CN102572894 B CN 102572894B CN 201110455675 A CN201110455675 A CN 201110455675A CN 102572894 B CN102572894 B CN 102572894B
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Abstract
The embodiment of the invention discloses a method and a device for selecting interference cells, wherein the method comprises the following steps: measuring the RSCP (received signal code power) value of each adjacent domain at the edge of a service cell, and screening out a candidate interference cell set according to the RSCP values; estimating the Ec/Ior value of each candidate interference cell in the candidate interference cell set; respectively calculating the total received power Ior value of each candidate interference cell according to the RSCP values and the Ec/Ior values; and according to the total received power Ior value of each candidate interference cell, screening out stronger interference cells from the candidate interference cell set. According to the embodiment of the invention, the precision of screening out stronger interference cells can be improved.
Description
Technical field
The present invention relates to communication technical field, relate in particular to the system of selection of a kind of interfered cell and device.
Background technology
At edge, Serving cell, often can be subject to the interference of a plurality of homogeneous-frequency adjacent-domains, correctly identify some adjacent area that interference is larger and will disturb elimination, bring not little gain can to the receiver performance of Serving cell.Therefore, go out to disturb larger adjacent area be the often problem of research of wireless communication field to How to choose always.
In prior art, be generally to determine interfered cell according to the size of received signal code word power (Received Signal Code Power, the RSCP) value of the adjacent area Common Pilot Channel (Common Pilot Channel, CPICH) of measuring.For example: can test the RSCP value of each homogeneous-frequency adjacent-domain CPICH, RSCP value is sorted from large to small, and select several forward adjacent areas as disturbing larger interfered cell (Interference Cell, CI).
In practice, find, the Ec/Ior of CPICH (Average energy per PN chip/Ior, the chip power of the physical code channel of transmitting terminal accounts for the ratio of total transmitting power) fixed value-10dB of not necessarily configuring in test protocol, while being likely, become, particularly unloaded in adjacent area, be that CPICH accounts for when always transmitting a big chunk energy, only unreliable as the basis for estimation of determining interfered cell by the RSCP value of CPICH.
Summary of the invention
The embodiment of the present invention provides the system of selection of a kind of interfered cell and device, for improving interfered cell screening precision.
An interfered cell system of selection, comprising:
Measure the received signal code word power RSCP value of each adjacent area CPICH at edge, Serving cell, and filter out the set of candidate interfered cell according to described RSCP value;
Estimate the Ec/Ior value of each the candidate interfered cell in the set of described candidate interfered cell;
According to the RSCP value of each candidate interfered cell and Ec/Ior value, calculate the total received power value of each candidate interfered cell;
According to the total received power value of described each candidate interfered cell, from the set of described candidate interfered cell, filter out strong jamming community.
An interfered cell choice device, comprising:
Measuring unit, for measuring the received signal code word power RSCP value of each adjacent area CPICH at edge, Serving cell;
The first screening unit, for filtering out the set of candidate interfered cell according to described RSCP value;
Evaluation unit, for estimating the Ec/Ior value of each candidate interfered cell of described candidate interfered cell set;
Computing unit, for calculating the total received power value of each candidate interfered cell according to the RSCP value of each candidate interfered cell and Ec/Ior value;
The second screening unit for according to the total received power Ior value of described each candidate interfered cell, filters out strong jamming community from the set of described candidate interfered cell.
In technique scheme, measure the received signal code word power RSCP value of each adjacent area CPICH at edge, Serving cell, and after filtering out the set of candidate interfered cell according to RSCP value, further estimate again the Ec/Ior value of each the candidate interfered cell in candidate interfered cell set, and the total received power value that calculates respectively each candidate interfered cell according to RSCP value and Ec/Ior value; Last according to the total received power value of each candidate interfered cell, from the set of candidate interfered cell, filter out strong jamming community.The present invention has not only considered the RSCP value of each adjacent area CPICH in the process of screening strong jamming community, but also considered the Ec/Ior value as each adjacent area of candidate interfered cell, only consider that with prior art the mode of the RSCP value of adjacent area CPICH compares, the embodiment of the present invention can improve the precision of the interference adjacent area filtering out.
Accompanying drawing explanation
In order to be illustrated more clearly in the technical scheme in the embodiment of the present invention, to the accompanying drawing of required use in embodiment be briefly described below, apparently, accompanying drawing in the following describes is some embodiments of the present invention, for those of ordinary skills, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.
The flow chart of a kind of interfered cell system of selection that Fig. 1 provides for the embodiment of the present invention one;
The flow chart of a kind of interfered cell system of selection that Fig. 2 provides for the embodiment of the present invention two;
The structure chart of a kind of interfered cell choice device that Fig. 3 provides for the embodiment of the present invention three;
The structure chart of the another kind of interfered cell choice device that Fig. 4 provides for the embodiment of the present invention three.
Embodiment
Below in conjunction with the accompanying drawing in the present invention, the technical scheme in the present invention is clearly and completely described, obviously, described embodiment is a part of embodiment of the present invention, rather than whole embodiment.Embodiment based in the present invention, those of ordinary skills, not making the every other embodiment obtaining under creative work prerequisite, belong to the scope of protection of the invention.
The embodiment of the present invention provides the system of selection of a kind of interfered cell and device, can improve interfered cell screening precision.Below be elaborated respectively.
Embodiment mono-:
Refer to Fig. 1, Fig. 1 is the flow chart of a kind of interfered cell system of selection of providing of the embodiment of the present invention one.As shown in Figure 1, the method can comprise the following steps:
101, measure the RSCP value of each adjacent area CPICH at edge, Serving cell.
Wherein, the terminal of Serving cell (as mobile phone, PDA etc.) can search for and measure each adjacent area at edge, Serving cell, obtains the RSCP value of each adjacent area CPICH channel.
102, according to the RSCP value of each adjacent area CPICH, filter out the set of candidate interfered cell.
In an embodiment, the terminal of Serving cell is after the RSCP value of each adjacent area CPICH of measuring edge, Serving cell, the RSCP value of each adjacent area CPICH can be sorted from large to small, and several forward adjacent areas of sequence are screened, form the set of candidate interfered cell.
103, estimate the Ec/Ior value of each the candidate interfered cell in the set of candidate interfered cell.
Wherein, the ratio of the signal transmission power of Ec/Ior value representation CPICH and total transmitting power.
Wherein, the specific implementation process that the terminal of Serving cell estimates the Ec/Ior value of each the candidate interfered cell in the set of candidate interfered cell is general knowledge known in those skilled in the art, and the embodiment of the present invention does not describe in detail.
104, according to the RSCP value of each candidate interfered cell and Ec/Ior value, calculate the total received power value of each candidate interfered cell.
Wherein, the specific implementation process that the terminal of Serving cell calculates the total received power value of each candidate interfered cell according to the RSCP value of each candidate interfered cell and Ec/Ior value is general knowledge known in those skilled in the art, and the embodiment of the present invention does not describe in detail.
105,, according to the total received power value of each candidate interfered cell, from the set of candidate interfered cell, filter out strong jamming community.
In an embodiment, the total received power value difference value that the terminal of Serving cell can filter out total received power value and Serving cell from the set of candidate interfered cell is more than or equal to the candidate interfered cell of presetting thresholding, and the candidate interfered cell filtering out is arranged according to total received power value order from large to small, and select a forward preset number candidate interfered cell as interfered cell.
In an embodiment, the terminal of Serving cell can be entered each candidate interfered cell in the candidate interfered cell set that step 102 is filtered out and carry out respectively CPICH interference elimination, thereby improves terminal receptivity.
The embodiment of the present invention one has not only been considered the RSCP value of each adjacent area CPICH in the process that filters out strong jamming community, but also considered the Ec/Ior value as each adjacent area of candidate interfered cell, the embodiment of the present invention can be under the full load conditions of adjacent area, or improves the precision that filters out strong jamming adjacent area under the idle condition of adjacent area.
Embodiment bis-:
Refer to Fig. 2, Fig. 2 is the flow chart of a kind of interfered cell system of selection of providing of the embodiment of the present invention two.As shown in Figure 2, the method can comprise the following steps:
201, terminal is measured the RSCP value of the adjacent area CPICH at edge, Serving cell.
202, adjacent area corresponding to terminal judges RSCP value, whether in the set of candidate interfered cell, if so, performs step 203, if not, performs step 207.
203, terminal is calculated the difference of the RSCP value of RSCP value and Serving cell, and performs step 204.
Whether the difference that 204, terminal judges step 203 calculates is more than or equal to predetermined threshold value, if not, performs step 205; If so, perform step 206.
205, terminal is deleted adjacent area corresponding to RSCP from the set of candidate interfered cell, and performs step 213.
206, terminal retains adjacent area that RSCP is corresponding in the set of candidate interfered cell, and performs step 213.
207, whether the set of terminal inquiry candidate interfered cell is free, if so, performs step 208; If not, perform step 211.
208, terminal is calculated the difference of the RSCP value of RSCP value and Serving cell, and performs step 209.
Whether the difference that 209, terminal judges step 208 calculates is greater than predetermined threshold value, if so, performs step 210; If not, return to step 201.
210, terminal joins adjacent area corresponding to RSCP value in the set of candidate interfered cell, and performs step 213.
211, the whether double above minimum RSCP value that is greater than the candidate interfered cell in the set of candidate interfered cell of terminal judges RSCP value, if so, performs step 212; If not, process ends.
212, terminal is replaced candidate interfered cell corresponding to minimum RSCP value in the set of candidate interfered cell by adjacent area corresponding to RSCP value, and performs step 213.
213, terminal is estimated the Ec/Ior value of each the candidate interfered cell in the set of candidate interfered cell, and performs step 214.
214, terminal calculates the total received power value of each candidate interfered cell according to the RSCP value of each candidate interfered cell and Ec/Ior value, and performs step 215.
215, terminal, according to the total received power value of each candidate interfered cell, filters out strong jamming community from the set of candidate interfered cell.
The embodiment of the present invention two has not only been considered the RSCP value of each adjacent area CPICH in the process that filters out strong jamming community, but also considered the Ec/Ior value as each adjacent area of candidate interfered cell, the embodiment of the present invention can be under the full load conditions of adjacent area, or under the idle condition of adjacent area, improves and filter out the precision of disturbing adjacent area.
Embodiment tri-:
Refer to Fig. 3, the structure chart of a kind of interfered cell choice device that Fig. 3 provides for the embodiment of the present invention three.Wherein, the interfered cell choice device that the embodiment of the present invention three provides can be terminal (terminal), travelling carriage (mobile station), subscriber unit (subscriber unit), platform (station) etc.Terminal can be cell phone (cellular phone), personal digital assistant (Personal Digital Assistant, PDA), radio modem (modem), Wireless Telecom Equipment, handheld device (handheld), kneetop computer (laptop computer), cordless telephone (cordless phone), wireless local loop (Wireless Local Loop, WLL) platform etc.As shown in Figure 3, this device can comprise:
Measuring unit 301, for measuring the RSCP value of each adjacent area CPICH at edge, Serving cell.
The first screening unit 302, for filtering out the set of candidate interfered cell according to the RSCP value of each adjacent area CPICH.
Evaluation unit 303, for estimating the Ec/Ior value of each candidate interfered cell of candidate interfered cell set.
Computing unit 304, the total received power value that calculates each candidate interfered cell for the RSCP value of each candidate interfered cell that records according to measuring unit 301 and the Ec/Ior value of each candidate interfered cell that evaluation unit 303 estimates.
The second screening unit 305, for the total received power value of each candidate interfered cell of calculating according to computing unit 304, filters out strong jamming community the set of the candidate interfered cell filtering out from the first screening unit 302.
See also Fig. 4, the structure chart of the another kind of interfered cell choice device that Fig. 4 provides for the embodiment of the present invention three.Wherein, the interfered cell choice device shown in Fig. 4 is that interfered cell choice device is as shown in Figure 3 optimized and obtains.In the interfered cell choice device shown in Fig. 4, the first screening unit 302 comprises:
The first module 21, for judging whether adjacent area corresponding to RSCP that measuring unit 301 records gathers in candidate interfered cell.
The second module 22, for when judgment result is that of the first module 21 is, calculates the difference of the RSCP value of RSCP value and Serving cell.
The 3rd module 23, while being less than predetermined threshold value for the difference calculating in the second module 22, adjacent area corresponding to RSCP deleted from the set of candidate interfered cell, and when difference is greater than or equal to predetermined threshold value, retain adjacent area that RSCP is corresponding in the set of candidate interfered cell.
In an embodiment, the first screening unit 302 can also comprise:
Four module 24, when in the first module 21, the determination result is NO, whether the set of query candidate interfered cell is free, if free, calculates the difference of the RSCP value of RSCP value and Serving cell.
The 5th module 25, if the difference calculating for four module 24 is greater than predetermined threshold value, joins adjacent area corresponding to RSCP value in the set of candidate interfered cell.
In an embodiment, the first screening unit 302 can also comprise:
The 6th module 26, while being full for inquire the set of candidate interfered cell at four module 24, the RSCP value of each candidate interfered cell in RSCP value and the set of candidate interfered cell is compared, if the double above minimum RSCP value that is greater than the candidate interfered cell in the set of candidate interfered cell of RSCP value, replaces candidate interfered cell corresponding to minimum RSCP value in the set of candidate interfered cell by adjacent area corresponding to RSCP value.
In an embodiment, interfered cell choice device as shown in Figure 4 can also comprise:
Interference cancellation unit 306, each candidate interfered cell of gathering for the candidate interfered cell that the first screening unit 302 is filtered out is carried out respectively CPICH and is disturbed elimination.
In an embodiment, the second screening unit 305 is more than or equal to the candidate interfered cell of default thresholding specifically for filter out the total received power value of total received power value and described Serving cell from the set of candidate interfered cell; And the candidate interfered cell filtering out is arranged according to total received power value order from large to small, and select a forward preset number candidate interfered cell as strong jamming community.
The embodiment of the present invention three has not only been considered the RSCP value of each adjacent area CPICH in the process that filters out strong jamming community, but also considered the Ec/Ior value as each adjacent area of candidate interfered cell, the embodiment of the present invention can be under the full load conditions of adjacent area, or under the idle condition of adjacent area, improves and filter out the precision of disturbing adjacent area.
The method of the embodiment of the present invention can be carried out by universal integrated circuit (as central processor CPU) and application-specific integrated circuit (ASIC) (ASIC).The device of the embodiment of the present invention, unit can be base station, universal integrated circuit (as central processor CPU) and application-specific integrated circuit (ASIC) (ASIC) etc.
One of ordinary skill in the art will appreciate that all or part of step in the whole bag of tricks of above-described embodiment is to come the hardware that instruction is relevant to complete by program, this program can be stored in a computer-readable recording medium, storage medium can comprise: flash disk, read-only memory (Read-Only Memory, ROM), random access device (Random Access Memory, RAM), disk or CD etc.
Above a kind of interfered cell system of selection provided by the present invention and device are described in detail, applied specific case herein principle of the present invention and execution mode are set forth, the explanation of above embodiment is just for helping to understand method of the present invention and core concept thereof; , for one of ordinary skill in the art, according to thought of the present invention, all will change in specific embodiments and applications, in sum, this description should not be construed as limitation of the present invention meanwhile.
Claims (10)
1. an interfered cell system of selection, is characterized in that, comprising:
Measure the received signal code word power RSCP value of each adjacent area Common Pilot Channel at edge, Serving cell, and filter out the set of candidate interfered cell according to described RSCP value; Estimate that the chip power of physical code channel of the transmitting terminal of each the candidate interfered cell in described candidate interfered cell set accounts for the ratio Ec/Ior value of total transmitting power;
According to the RSCP value of each candidate interfered cell and Ec/Ior value, calculate the total received power value of each candidate interfered cell;
According to the total received power value of described each candidate interfered cell, from the set of described candidate interfered cell, filter out strong jamming community;
Described method also comprises:
Adjacent area Common Pilot Channel CPICH is carried out respectively in each candidate interfered cell in the set of described candidate interfered cell and disturb elimination.
2. interfered cell according to claim 1 system of selection, is characterized in that, describedly according to described RSCP value, filters out candidate interfered cell set and comprises:
Judge that adjacent area that described RSCP is corresponding whether in the set of candidate interfered cell, if so, calculates the difference of the RSCP value of described RSCP value and described Serving cell;
If described difference is less than predetermined threshold value, adjacent area corresponding to described RSCP deleted from the set of described candidate interfered cell, if described difference is greater than or equal to described predetermined threshold value, retain adjacent area that described RSCP is corresponding in the set of described candidate interfered cell.
3. interfered cell according to claim 2 system of selection, is characterized in that, also comprises:
The set of described candidate interfered cell, not in the set of described candidate interfered cell, is inquired about in the adjacent area that described RSCP is corresponding if judge whether free, if having time, calculates the difference of the RSCP value of described RSCP value and described Serving cell; If described difference is greater than predetermined threshold value, adjacent area corresponding to described RSCP value joined in the set of described candidate interfered cell.
4. interfered cell according to claim 3 system of selection, is characterized in that, also comprises:
If it is full inquiring the set of described candidate interfered cell, the RSCP value of each candidate interfered cell in described RSCP value and the set of described candidate interfered cell is compared, if the double above minimum RSCP value that is greater than the candidate interfered cell in the set of described candidate interfered cell of described RSCP value, replaces adjacent area corresponding to described RSCP value candidate interfered cell corresponding to minimum RSCP value in the set of described candidate interfered cell.
5. the method for selecting according to the interfered cell described in any one in claim 1 to 4, is characterized in that, described according to the total received power value of each candidate interfered cell, filters out strong jamming community and comprise from the set of described candidate interfered cell:
The difference that filters out total received power value and described Serving cell total received power value from the set of described candidate interfered cell is more than or equal to the candidate interfered cell of default thresholding;
The candidate interfered cell filtering out is arranged according to total received power value order from large to small, and select a forward preset number candidate interfered cell as strong jamming community.
6. an interfered cell choice device, is characterized in that, comprising:
Measuring unit, for measuring the received signal code word power RSCP value of each adjacent area Common Pilot Channel at edge, Serving cell;
The first screening unit, for filtering out the set of candidate interfered cell according to described RSCP value; Evaluation unit, for estimating the Ec/Ior value of each candidate interfered cell of described candidate interfered cell set;
Computing unit, for calculating the total received power value of each candidate interfered cell according to the RSCP value of each candidate interfered cell and Ec/Ior value;
The second screening unit for according to the total received power value of described each candidate interfered cell, filters out strong jamming community from the set of described candidate interfered cell;
Described device also comprises:
Interference cancellation unit, each candidate interfered cell of gathering for the described candidate interfered cell that described the first screening sieve unit is selected is carried out respectively adjacent area Common Pilot Channel CPICH and is disturbed elimination.
7. interfered cell according to claim 6 choice device, is characterized in that, described the first screening unit comprises:
The first module, for judging whether the adjacent area that described RSCP is corresponding gathers in candidate interfered cell;
The second module, for when judgment result is that of described the first module is, calculates the difference of the RSCP value of described RSCP value and described Serving cell;
The 3rd module, while being less than predetermined threshold value for the described difference calculating in described the second module, adjacent area corresponding to described RSCP deleted from the set of described candidate interfered cell, and when described difference is greater than or equal to described predetermined threshold value, retain adjacent area that described RSCP is corresponding in the set of described candidate interfered cell.
8. interfered cell according to claim 7 choice device, is characterized in that, described the first screening unit also comprises:
Whether free four module, when the determination result is NO in described the first module, inquire about the set of described candidate interfered cell, if free, calculates the difference of the RSCP value of described RSCP value and described Serving cell;
The 5th module, if the described difference calculating for described four module is greater than predetermined threshold value, joins adjacent area corresponding to described RSCP value in the set of described candidate interfered cell.
9. interfered cell according to claim 8 choice device, is characterized in that, the first screening unit also comprises:
The 6th module, while being full for inquire the set of described candidate interfered cell at described four module, the RSCP value of each candidate interfered cell in described RSCP value and the set of described candidate interfered cell is compared, if the double above minimum RSCP value that is greater than the candidate interfered cell in the set of described candidate interfered cell of described RSCP value, replaces adjacent area corresponding to described RSCP value candidate interfered cell corresponding to minimum RSCP value in the set of described candidate interfered cell.
10. according to the interfered cell choice device described in any one in claim 6 to 9, it is characterized in that, described the second screening unit is more than or equal to the candidate interfered cell of default thresholding specifically for filter out the difference of total received power value and described Serving cell total received power value from the set of described candidate interfered cell; And the candidate interfered cell filtering out is arranged according to total received power value order from large to small, and select a forward preset number candidate interfered cell as strong jamming community.
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| CN103905346B (en) * | 2012-12-28 | 2017-11-17 | 华为技术有限公司 | A kind of method and apparatus of interference signal processing |
| CN104469815B (en) * | 2013-09-13 | 2019-04-05 | 上海诺基亚贝尔股份有限公司 | A kind of method and user equipment eliminated and inhibited for triggering network assistance interference |
| CN105099964B (en) * | 2014-05-07 | 2018-09-07 | 电信科学技术研究院 | A kind of method and apparatus of power level estimation and determining interfered cell |
| WO2015192293A1 (en) * | 2014-06-16 | 2015-12-23 | Alcatel Lucent | Method and apparatus for triggering naics in wireless network |
| CN105472636B (en) * | 2014-09-12 | 2019-02-05 | 中国移动通信集团公司 | A method and device for determining an interfering adjacent cell |
| CN104955090B (en) * | 2015-04-30 | 2018-12-14 | 上海大唐移动通信设备有限公司 | A kind of area interference determines method and device |
| CN104811989B (en) * | 2015-04-30 | 2018-09-25 | 上海大唐移动通信设备有限公司 | A kind of interfered cell determines method and device |
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| CN101188445A (en) * | 2006-08-26 | 2008-05-28 | 华为技术有限公司 | An adjusting method and device for pilot channel transmission power |
| CN101300745A (en) * | 2005-09-01 | 2008-11-05 | 艾利森电话股份有限公司 | Method and apparatus for selecting delay values for a RAKE receiver |
| CN1980077B (en) * | 2005-11-29 | 2010-12-01 | 上海明波通信技术有限公司 | Non-orthogonal-interference estimation method and device in wide-bind CDMA mobile communication system |
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| CN101300745A (en) * | 2005-09-01 | 2008-11-05 | 艾利森电话股份有限公司 | Method and apparatus for selecting delay values for a RAKE receiver |
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| CN101188445A (en) * | 2006-08-26 | 2008-05-28 | 华为技术有限公司 | An adjusting method and device for pilot channel transmission power |
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