CN101808350B - Common-frequency cell determining method and device - Google Patents
Common-frequency cell determining method and device Download PDFInfo
- Publication number
- CN101808350B CN101808350B CN 201010125430 CN201010125430A CN101808350B CN 101808350 B CN101808350 B CN 101808350B CN 201010125430 CN201010125430 CN 201010125430 CN 201010125430 A CN201010125430 A CN 201010125430A CN 101808350 B CN101808350 B CN 101808350B
- Authority
- CN
- China
- Prior art keywords
- frequency cell
- cell set
- terminal
- residential quarter
- frequency
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Landscapes
- Mobile Radio Communication Systems (AREA)
Abstract
The invention discloses a common-frequency cell determining method and a common-frequency cell determining device. The method comprises the following steps that: a terminal is interfered by common-frequency signals, and the terminal acquires a reference common-frequency cell set of resident cells; the terminal selects any one or more cells from the reference common-frequency cell set to update the common-frequency cell set of the resident cells stored in the terminal and determine the updated common-frequency cell set; the terminal judges whether the terminal meets the demodulation performance requirement or not according to the updated common-frequency cell set; and the terminal determines the updated common-frequency cell set as the common-frequency cells of the resident cells if the terminal meets the demodulation performance requirement. The method and the device can precisely detect the common-frequency cells of the resident cells, effectively improve the demodulation performance of a joint detection algorithm and effectively avoid common-frequency interference.
Description
Technical field
The present invention relates to the communications field, relate in particular to a kind of common-frequency cell determining method and device.
Background technology
At TD SDMA access (Time Division-Synchronous Code DivisionMultiple Access, referred to as TD-SCDMA) in the system, the main mode of N frequency point co-frequency networking that adopts communicates, utilize this networking mode, Wideband Code Division Multiple Access (WCDMA) in 3G (Third Generation) Moblie accesses (Wide Code Division Multiple Access, referred to as WCDMA) system and CDMA2000 (Code Division Multiple Access2000), the TD-SCDMA system can obtain the higher availability of frequency spectrum.
But the identical networking mode of TD-SCDMA can be brought problem of co-channel interference, although can avoid preferably co-channel interference on the TS#0 time slot based on the identical networking mode of N frequency, for business time-slot, still has problem of co-channel interference.
In order to eliminate the problem of co-channel interference of business time-slot, the main joint detection algorithm that adopts overcomes this problem at present, joint detection algorithm is the prior informations such as cell id of the co-frequency cell that passes through to obtain, comes this user's of demodulation data in conjunction with this community user information.But for business time-slot, at present mainly be by measuring received signal code power (the Received Signal Code Power of TS#0, referred to as RSCP) obtain the cell information of co-frequency cell, yet, along with the increase of network load and the impact of downlink power control, for the upper very little co-frequency cell of RSCP measured value of TS#0, on business time-slot, may have very strong interfering signal power, undetected for these strong jamming residential quarters, the joint detection algorithm demodulation performance can be greatly worsened, thereby the co-frequency cell of this residential quarter can't be accurately detected.
For detecting the problem of makeing mistakes owing to undetected strong jamming residential quarter causes co-frequency cell in the correlation technique, effective solution is proposed not yet at present.
Summary of the invention
For undetected for these strong jamming residential quarters in the correlation technique, can greatly worsen the joint detection algorithm demodulation performance, thereby can't accurately detect the problem of the co-frequency cell of this residential quarter, the present invention proposes a kind of common-frequency cell determining method, can effectively avoid the undetected of co-frequency cell, thereby definite co-frequency cell is avoided co-channel interference exactly.
For undetected for these strong jamming residential quarters in the correlation technique, can greatly worsen the joint detection algorithm demodulation performance, thereby can't accurately detect the problem of the co-frequency cell of this residential quarter, the present invention proposes a kind of definite device of co-frequency cell, can effectively avoid the undetected of co-frequency cell, thereby definite co-frequency cell is avoided co-channel interference exactly.
Technical scheme of the present invention is achieved in that
A kind of common-frequency cell determining method comprises:
Terminal is subject to homogenous frequency signal and disturbs, and terminal is obtained the reference co-frequency cell set of its persistent district;
Terminal is selected any one or a plurality of residential quarter from reference co-frequency cell set, the co-frequency cell set after determining to upgrade is upgraded in the co-frequency cell set of the persistent district that terminal is preserved;
Terminal judges according to the co-frequency cell set after upgrading whether terminal satisfies demodulation performance, if terminal satisfies demodulation performance, the co-frequency cell set after terminal will be upgraded is defined as the co-frequency cell of persistent district.
Wherein, terminal is subject to the processing that homogenous frequency signal disturbs and comprises:
The signal strength signal intensity that terminal receives is more than or equal to signal strength threshold, and terminal is determined noise power changing value between any two adjacent sliding windows of terminal more than or equal to the noise power change threshold according to channel estimation results.
Wherein, terminal is subject to the processing that homogenous frequency signal disturbs and comprises:
The signal strength signal intensity that terminal receives is more than or equal to signal strength threshold, and the signal to noise ratio that terminal detects demodulating data is less than or equal to snr threshold.
Preferably, the set of the reference co-frequency cell of the persistent district that obtains of terminal is periodically notified to terminal by the base station.
Wherein, terminal is selected any one or a plurality of residential quarter from reference co-frequency cell set, and the processing that the co-frequency cell set of the persistent district that terminal is preserved is upgraded comprises:
If the residential quarter number in the co-frequency cell set is less than the disposal ability number of terminal, difference number N between then computing ability number and residential quarter number, and in the set of reference co-frequency cell, select arbitrarily N residential quarter, N the residential quarter of selecting joined in the co-frequency cell set; Perhaps,
If the residential quarter number in the co-frequency cell set equals the disposal ability number of terminal, then calculate the received signal code power of each residential quarter in the co-frequency cell set, residential quarter deletion from the co-frequency cell set with the value minimum of received signal code power, and in the set of reference co-frequency cell, select arbitrarily a residential quarter, this residential quarter is joined in the co-frequency cell set.
Wherein, the terminal processing of satisfying demodulation performance comprises:
Terminal detects the signal to noise ratio of demodulating data of terminal greater than snr threshold.
Preferably, the signal to noise ratio of the demodulating data of terminal refers to greater than snr threshold: the mean value of the signal to noise ratio of the demodulating data of a plurality of subframes of terminal is greater than snr threshold.
Further, said method also comprises:
The power difference of the maximal window of each residential quarter in user's window that terminal is determined respectively persistent district and the co-frequency cell of the persistent district of determining, and the power difference of user's window of maximal window and persistent district deleted from the co-frequency cell of definite persistent district greater than the residential quarter of predetermined value.
A kind of definite device of co-frequency cell comprises:
Detection module is subject to the homogenous frequency signal interference for detection of going out terminal;
Acquisition module, the reference co-frequency cell set that is used for obtaining persistent district;
Preserve module, be used for the co-frequency cell set of the persistent district of preservation;
Update module is used for selecting any one or a plurality of residential quarter from the reference co-frequency cell set of acquisition module, the co-frequency cell set after determining to upgrade is upgraded in the co-frequency cell set of preserving the persistent district that module preserves;
Judge module is used for judging according to the co-frequency cell set after upgrading whether terminal satisfies demodulation performance;
Determination module satisfies demodulation performance if judge module is judged terminal, and the co-frequency cell set after being used for upgrading is defined as the co-frequency cell of persistent district.
Wherein, detect signal strength signal intensity that terminal receives more than or equal to signal strength threshold at detection module, and detect in the situation of noise power changing value more than or equal to the noise power change threshold between any two adjacent sliding windows of terminal, detection module detects persistent district and is subject to homogenous frequency signal and disturbs.
Wherein, detect signal strength signal intensity that terminal receives more than or equal to signal strength threshold at detection module, and the signal to noise ratio that detects the demodulating data of terminal is less than or equal in the situation of snr threshold, and detection module detects persistent district and is subject to the homogenous frequency signal interference.
By technique scheme of the present invention, gather by being obtained with reference to co-frequency cell by terminal, and with the local co-frequency cell set of preserving of the cell update terminal in this set, can accurately detect the co-frequency cell of persistent district, thereby effectively improve the joint detection algorithm demodulation performance, effectively avoid co-channel interference.
Description of drawings
Fig. 1 is the flow chart according to the method for the embodiment of the invention;
Fig. 2 is the realization schematic diagram according to the embodiment of the invention;
Fig. 3 is the detection schematic diagram according to the embodiment of the invention;
Fig. 4 is the composition structure chart according to definite device of the co-frequency cell of the embodiment of the invention.
Embodiment
For in the prior art along with the increase of network load and the impact of downlink power control, for the upper very little co-frequency cell of RSCP measured value of TS#0, on business time-slot, may have very strong interfering signal power, undetected for these strong jamming residential quarters, can greatly worsen the joint detection algorithm demodulation performance, the problem that causes co-frequency cell that can't the Obtaining Accurate persistent district by joint detection algorithm, the invention provides a kind of common-frequency cell determining method, terminal is gathered by obtaining with reference to co-frequency cell, and with the local co-frequency cell set of preserving of the cell update terminal in this set, can accurately detect the co-frequency cell of persistent district, thereby effectively improve the joint detection algorithm demodulation performance, avoid co-channel interference.
Fig. 1 is the flow chart according to the common-frequency cell determining method of the embodiment of the invention, as shown in Figure 1, may further comprise the steps:
Step S101, terminal detects it and is subject to the homogenous frequency signal interference, at this moment, illustrates that terminal is subject to the signal interference of the co-frequency cell of its persistent district, need the co-frequency cell set of the persistent district of more new terminal preservation, terminal can be obtained the reference co-frequency cell set of persistent district.
Step S102, terminal is selected any one or a plurality of residential quarter from reference co-frequency cell set, and the co-frequency cell set after determining to upgrade is upgraded in the co-frequency cell set of the persistent district that terminal is preserved.
Step S103, terminal judges according to the co-frequency cell set after upgrading whether terminal satisfies demodulation performance, if terminal satisfies demodulation performance, the co-frequency cell set after terminal will be upgraded is defined as the co-frequency cell of persistent district.
By means of above-mentioned processing, gather by being obtained by terminal with reference to co-frequency cell, and gather with the local co-frequency cell of preserving of the cell update terminal in this set, can accurately detect the co-frequency cell of persistent district, thereby effectively improve the joint detection algorithm demodulation performance, effectively avoid co-channel interference.
The below is elaborated to above steps.
In step S101, terminal can detect it by following dual mode and be subject to the processing that homogenous frequency signal disturbs:
Mode 1: the signal strength signal intensity that terminal receives is more than or equal to signal strength threshold, and terminal is determined noise power changing value between any two adjacent sliding windows of terminal more than or equal to the noise power change threshold according to channel estimation results.
Mode 2: the signal strength signal intensity that terminal receives is more than or equal to signal strength threshold, and the signal to noise ratio that terminal detects demodulating data is less than or equal to snr threshold.
In step S101, the base station can periodically send the reference co-frequency cell set of persistent district to terminal, terminal receives this with reference to after the co-frequency cell set, can be kept at this locality, and be updated periodically this and gather with reference to co-frequency cell, in a single day terminal detects and is subject to the homogenous frequency signal interference, will be from this locality or the base station reference co-frequency cell set of obtaining the persistent district of this terminal, upgrade processing with the co-frequency cell tabulation (being co-frequency cell set mentioned above) to this persistent district.
In step S102, according to the residential quarter number in the co-frequency cell set and the disposal ability number of terminal, the processing that terminal is upgraded the co-frequency cell set of the persistent district of terminal preservation comprises following dual mode:
Mode 1: if the residential quarter number in the co-frequency cell set is less than the disposal ability number of terminal, difference number N between then computing ability number and residential quarter number, and in the set of reference co-frequency cell, select arbitrarily N residential quarter, a selected N residential quarter is joined in the co-frequency cell set.
Mode 2: if the residential quarter number in the co-frequency cell set equals the disposal ability number of terminal, then calculate the received signal code power of each residential quarter in the co-frequency cell set, residential quarter deletion from the co-frequency cell set with the value minimum of received signal code power, and in the set of reference co-frequency cell, select arbitrarily a residential quarter, this residential quarter is joined in the co-frequency cell set.
In step S103, terminal can judge whether terminal satisfies demodulation performance according to the co-frequency cell set after upgrading, if terminal detects the signal to noise ratio of demodulating data greater than above-mentioned snr threshold, terminal can be defined as the co-frequency cell set after upgrading the co-frequency cell of persistent district.More accurate for the data that make detection, terminal can detect the signal to noise ratio of the demodulating data of each subframe, and calculates the mean value of signal to noise ratio of the demodulating data of many subframes, and mean value and snr threshold are compared.For example, number of sub frames is desirable 4, if the SNR mean value of 4 subframes of persistent district is greater than SNR threshold value (for example, the SNR threshold value is 7dB), then terminal can be defined as the co-frequency cell set after upgrading the co-frequency cell of persistent district.On the contrary, be less than or equal to above-mentioned snr threshold if terminal detects the signal to noise ratio of demodulating data, will change step S101 over to, re-execute step S101 to step S103, until terminal detects the signal to noise ratio of demodulating data greater than above-mentioned snr threshold.
Be elaborated below in conjunction with accompanying drawing 2 and 3 pairs of embodiment of the invention of accompanying drawing, Fig. 2 is the realization schematic diagram according to the embodiment of the invention, and Fig. 3 is the detection schematic diagram according to the embodiment of the invention.
Because unknown strongly disturbing appearance can have a strong impact on result and the demodulation performance of channel estimating, the present invention at first judges whether the unknown high reject signal of burst according to the signal to noise ratio snr of demodulating data with according to the noise power that the initial channel estimation result of this residential quarter calculates, and judgment criterion is to use the demodulation signal to noise ratio result of multiframe noise power-value and present frame.Particularly, strongly disturbingly occur meaning that received signal strength need satisfy some strength, at first, when RSSI (received signal strength indicator) satisfies thresholding, i.e. RSSI＞T
RSSIThe time carry out again the judgement of subsequent step, wherein, T
RSSICan be according to actual condition of external field adjustment, for example, T
RSSIValue can be-100dBm; Then, judge again whether noise power and demodulation signal to noise ratio satisfy any one in following two conditions: SNR＜T
SNROr NP
C＞NP
F+ T
NPIf, satisfy condition, then judge and unknown have (be terminal detect its persistent district be subject to homogenous frequency signal and disturb) with frequently strong jamming, and enable blind tester, wherein, ()
FRepresent front 8 frame average results, ()
CRepresent current 8 frame average results, SNR and NP represent respectively 8 frame average results of demodulation signal to noise ratio and noise power, for example,
Value is 4dB, T
NPValue is 6dB.
When terminal detects unknownly when existing with frequently strong jamming, as shown in Figure 2, start the cell id that blind tester detects unknown strong jamming residential quarter.For paring down expenses, need to divide by certain criterion the residential quarter ID scope that blind estimator is estimated, physical planning situation according to network, the same frequency strong jamming residential quarter of the residential quarter that terminal is resident appears at the probability of the residential quarter of measuring much larger than the residential quarter of not doing to measure, so actually can do blind Detecting to the set of cells of having measured first when doing blind Detecting, after all these cell detection are complete, still do not satisfy blind Detecting terminator condition, then continue the residential quarter of not measuring.
After cell detection was sequentially determined, ensuing was the renewal of co-frequency cell memory, specifically comprises initial phase and poll detection-phase.Initial phase: do joint-detection according to corresponding residential quarter from little region memorizer to be detected, residential quarter that the RSCP value of upper each residential quarter of TS#0 is chosen, concrete selection algorithm is: if X is counted in the residential quarter of choosing according to TS#0, and receiver actual treatment ability is N, the residential quarter number of then choosing from little region memorizer to be detected is N-X, when X=N, with the residential quarter of RSCP minimum in the residential quarter replacement initialization same frequency list in the set of cells to be detected, if take the TD-SCDMA terminal as example, N general desirable 4; Poll detection-phase: according to the residential quarter number of deleting in the testing process last time, from little region memorizer to be detected, select the current same frequency list of cell update of same number.
Complete when the co-frequency cell renewal, then to enable blind tester and detect unknown together frequently strong jamming residential quarter, concrete steps are: as shown in Figure 3, do channel estimating according to the co-frequency cell of this renewal, the channel estimating reprocessing; Maximum channel estimating window power according to the channel estimating reprocessing sorts to each residential quarter, and the signal power of the maximal window of calculating book user window and other each co-frequency cells, if difference, is then deleted this residential quarter ID greater than thresholding Tp; If the difference power of all residential quarters all less than thresholding Tp, is then deleted last residential quarter ID, the desirable 9dB of Tp detects according to this result next time and upgrades the same frequency list memory during realization.
After this interfered cell detection is complete, next step is to judge whether to withdraw from detection algorithm, detailed process is: if the SNR value of present frame is greater than the SNR thresholding, some subframes under then connecing use current same frequency list to do joint-detection, during realization, and desirable 4 of number of sub frames, if the SNR mean value of 4 subframes is greater than SNR thresholding (reference value of SNR thresholding is 7dB), then withdraw from blind tester, past co-frequency cell memory and little region memorizer to be detected return and withdraw from indication, and two memories quit work; Otherwise continuing next time detects.
By means of above-mentioned processing, gather by being obtained with reference to co-frequency cell by terminal, to each independently business time-slot carry out co-frequency cell and detect, and with this with reference to the local co-frequency cell set of preserving of the cell update terminal in the co-frequency cell set, can accurately detect the co-frequency cell of persistent district, thereby effectively improve the joint detection algorithm demodulation performance, effectively avoid co-channel interference, can improve largely recipient's demodulation performance increasing under the prerequisite seldom measure expense.
Fig. 4 is the composition structure chart according to definite device of the co-frequency cell of the embodiment of the invention, and this device can be arranged in the terminal, and as shown in Figure 4, this device comprises:
Preserve module 3, be used for the co-frequency cell set of the persistent district of preservation;
Update module 4 is used for selecting any one or a plurality of residential quarter from the reference co-frequency cell set of acquisition module, the co-frequency cell set after determining to upgrade is upgraded in the co-frequency cell set of preserving the persistent district that module preserves;
Judge module 5 is used for judging according to the co-frequency cell set after upgrading whether terminal satisfies demodulation performance;
By means of above-mentioned terminal, gather by obtaining with reference to co-frequency cell, and gather with the local co-frequency cell of preserving of the cell update terminal in this set, thereby can effectively improve the joint detection algorithm demodulation performance, accurately detect the co-frequency cell of persistent district, effectively avoid co-channel interference.
In sum, by means of technique scheme of the present invention, gather by being obtained with reference to co-frequency cell by terminal, to each independently business time-slot carry out co-frequency cell and detect, and with this with reference to the local co-frequency cell set of preserving of the cell update terminal in the co-frequency cell set, can accurately detect the co-frequency cell of persistent district, thereby effectively improve the joint detection algorithm demodulation performance, effectively avoid co-channel interference, can improve largely recipient's demodulation performance increasing under the prerequisite seldom measure expense.
Fig. 4 is the terminal corresponding with previous methods, and the course of work of terminal and operation principle are described in detail in the method part, do not repeat them here, and the description of appropriate section gets final product in the reference method.That is, according to each processing described in can implementation method embodiment of the terminal of present embodiment, concrete processing procedure no longer repeats here.
The above only is preferred embodiment of the present invention, and is in order to limit the present invention, within the spirit and principles in the present invention not all, any modification of doing, is equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. a common-frequency cell determining method is characterized in that, comprising:
Terminal is subject to homogenous frequency signal and disturbs, and described terminal is obtained the reference co-frequency cell set of its persistent district;
With reference to selecting any one or a plurality of residential quarter the co-frequency cell set, the co-frequency cell set after determining to upgrade is upgraded in the co-frequency cell set of the described persistent district that described terminal is preserved to described terminal from described;
Described terminal judges according to the described co-frequency cell set after upgrading whether described terminal satisfies demodulation performance, if described terminal satisfies described demodulation performance, the described co-frequency cell set after described terminal will be upgraded is defined as the co-frequency cell of described persistent district;
With reference to selecting any one or a plurality of residential quarter the co-frequency cell set, upgrade and comprise by the co-frequency cell set of the described persistent district that described terminal is preserved from described for described terminal:
If the residential quarter number in the described co-frequency cell set is less than the disposal ability number of described terminal, then calculate the difference number N between described disposal ability number and described residential quarter number, and described with reference to selecting arbitrarily N residential quarter in the co-frequency cell set, described N the residential quarter of selecting joined during described co-frequency cell gathers; Perhaps,
If the residential quarter number in the described co-frequency cell set equals the disposal ability number of described terminal, then calculate the received signal code power of each residential quarter in the described co-frequency cell set, residential quarter deletion from described co-frequency cell set with the value minimum of received signal code power, and described with reference to selecting arbitrarily a residential quarter in the co-frequency cell set, this residential quarter is joined in the described co-frequency cell set.
2. definite method according to claim 1 is characterized in that, terminal detects the interference that is subject to homogenous frequency signal in the following way:
The signal strength signal intensity that described terminal receives is more than or equal to signal strength threshold, and described terminal is determined noise power changing value between any two adjacent sliding windows of described terminal more than or equal to the noise power change threshold according to channel estimation results.
3. definite method according to claim 1 is characterized in that, terminal detects the interference that is subject to homogenous frequency signal in the following way:
The signal strength signal intensity that described terminal receives is more than or equal to signal strength threshold, and the signal to noise ratio that described terminal detects demodulating data is less than or equal to snr threshold.
4. definite method according to claim 1 is characterized in that, the reference co-frequency cell set of the described persistent district that described terminal is obtained is periodically notified to described terminal by the base station.
5. definite method according to claim 3 is characterized in that, described terminal determines to satisfy described demodulation performance in the following way:
Described terminal detects the signal to noise ratio of demodulating data of described terminal greater than described snr threshold.
6. definite method according to claim 5 is characterized in that, the signal to noise ratio of the demodulating data of described terminal refers to greater than described snr threshold: the mean value of the signal to noise ratio of the demodulating data of a plurality of subframes of described terminal is greater than described snr threshold.
7. each described definite method in 4 according to claim 1 is characterized in that, also comprises:
The power difference of the maximal window of each residential quarter in user's window that described terminal is determined respectively described persistent district and the co-frequency cell of the described persistent district of determining, and the power difference of user's window of maximal window and described persistent district deleted from the co-frequency cell of definite described persistent district greater than the residential quarter of predetermined value.
8. definite device of a co-frequency cell is characterized in that, comprising:
Detection module is subject to the homogenous frequency signal interference for detection of going out terminal;
Acquisition module, the reference co-frequency cell set that is used for obtaining persistent district;
Preserve module, be used for preserving the co-frequency cell set of described persistent district;
Update module is used for described with reference to selecting any one or a plurality of residential quarter the co-frequency cell set from described acquisition module, and the co-frequency cell set after determining to upgrade is upgraded in the co-frequency cell set of the described persistent district that described preservation module is preserved;
Judge module is used for judging according to the described co-frequency cell set after upgrading whether described terminal satisfies demodulation performance;
Determination module satisfies described demodulation performance if described judge module is judged described terminal, and the described co-frequency cell set after being used for upgrading is defined as the co-frequency cell of described persistent district;
Described with reference to selecting any one or a plurality of residential quarter in the co-frequency cell set from described acquisition module, the co-frequency cell set of the described persistent district that described preservation module is preserved is upgraded and is comprised:
If the residential quarter number in the described co-frequency cell set is less than the disposal ability number of described terminal, then calculate the difference number N between described disposal ability number and described residential quarter number, and described with reference to selecting arbitrarily N residential quarter in the co-frequency cell set, described N the residential quarter of selecting joined during described co-frequency cell gathers; Perhaps,
If the residential quarter number in the described co-frequency cell set equals the disposal ability number of described terminal, then calculate the received signal code power of each residential quarter in the described co-frequency cell set, residential quarter deletion from described co-frequency cell set with the value minimum of received signal code power, and described with reference to selecting arbitrarily a residential quarter in the co-frequency cell set, this residential quarter is joined in the described co-frequency cell set.
9. definite device according to claim 8, it is characterized in that, detect signal strength signal intensity that described terminal receives more than or equal to signal strength threshold at described detection module, and detect in the situation of noise power changing value more than or equal to the noise power change threshold between any two adjacent sliding windows of described terminal, described detection module detects described persistent district and is subject to homogenous frequency signal and disturbs.
10. definite device according to claim 8, it is characterized in that, detect signal strength signal intensity that described terminal receives more than or equal to signal strength threshold at described detection module, and the signal to noise ratio that detects the demodulating data of described terminal is less than or equal in the situation of snr threshold, and described detection module detects described persistent district and is subject to the homogenous frequency signal interference.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010125430 CN101808350B (en) | 2010-03-15 | 2010-03-15 | Common-frequency cell determining method and device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010125430 CN101808350B (en) | 2010-03-15 | 2010-03-15 | Common-frequency cell determining method and device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101808350A CN101808350A (en) | 2010-08-18 |
| CN101808350B true CN101808350B (en) | 2013-04-03 |
Family
ID=42609920
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201010125430 Expired - Fee Related CN101808350B (en) | 2010-03-15 | 2010-03-15 | Common-frequency cell determining method and device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101808350B (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101969657B (en) * | 2010-10-26 | 2012-10-24 | 东南大学 | Same-frequency cell detection method of FDD-LTE system |
| CN102761379B (en) * | 2011-04-29 | 2015-01-28 | 中兴通讯股份有限公司 | Method and device for determining adjacent regions with same frequency |
| CN103428872A (en) * | 2012-05-15 | 2013-12-04 | 马维尔国际有限公司 | Method and apparatus for eliminating co-channel interference |
| CN102983922B (en) | 2012-11-29 | 2014-12-24 | 华为技术有限公司 | Method for measuring co-channel signal interference and receiver |
| CN105792222B (en) * | 2014-12-23 | 2020-02-11 | 中兴通讯股份有限公司 | Method for eliminating co-channel interference, detection method and device and base station |
| CN105828360B (en) * | 2015-01-06 | 2019-05-14 | 中国移动通信集团上海有限公司 | A kind of connection cluster determines method and apparatus |
| CN114978211B (en) * | 2022-05-12 | 2024-06-07 | 维沃移动通信有限公司 | Electronic device protection method and electronic equipment |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101056117A (en) * | 2006-04-14 | 2007-10-17 | 鼎桥通信技术有限公司 | A multi-cell joint detection method of the broadcast channel in the time-division duplex system |
| CN101237708A (en) * | 2008-03-06 | 2008-08-06 | 北京天碁科技有限公司 | Method for initializing and updating inter-frequency interference cell of TD-SCDMA terminal |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100929850B1 (en) * | 2007-04-02 | 2009-12-04 | 삼성전자주식회사 | Apparatus and Method for Eliminating Interference in Broadband Wireless Communication Systems |
-
2010
- 2010-03-15 CN CN 201010125430 patent/CN101808350B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101056117A (en) * | 2006-04-14 | 2007-10-17 | 鼎桥通信技术有限公司 | A multi-cell joint detection method of the broadcast channel in the time-division duplex system |
| CN101237708A (en) * | 2008-03-06 | 2008-08-06 | 北京天碁科技有限公司 | Method for initializing and updating inter-frequency interference cell of TD-SCDMA terminal |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101808350A (en) | 2010-08-18 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101808350B (en) | Common-frequency cell determining method and device | |
| CN103597751B (en) | The equipment of interference elimination method, the method detecting mistake neighbor cell measurement and process signal | |
| CA2590022A1 (en) | Channel estimator with extended channel bandwidth | |
| CN105516032A (en) | Adaptive narrowband interference elimination method and device | |
| EP3025466A1 (en) | Method and apparatus for estimating signal to interference plus noise ratio for a random access channel of a wireless network | |
| CN104467938B (en) | Selection diversity receives the method and system of merging patterns | |
| CN103117820A (en) | Reliability-based weighted collaboration spectrum detection method | |
| CN109274438B (en) | Self-adaptive double-threshold cooperative interference detection method and device | |
| CN1953609A (en) | Accurate access method in the case of the initial search at the cell in TD-SCDMA system | |
| CN104038313A (en) | Signal Decoding In The Presence Of Almost-Blank Subframes (ABS) | |
| CN104980184A (en) | Method and equipment for cell search of TD-SCDMA (Time Division-Synchronization Code Division Multiple Access) system | |
| CN100589334C (en) | Co-channel adjacent cell channel estimating method at the time of multi-cell union detection in TD SCDMA system | |
| CN102869091B (en) | Method and device for determining arrival time of location reference signals | |
| US20080037689A1 (en) | Adaptive Kalman filtering for fast fading removal | |
| CN102457300B (en) | Joint detection method and device | |
| CN111385041B (en) | Method and device for measuring interference noise intensity and storage medium | |
| CN105357721B (en) | Neighbor cell detecting method and device | |
| CN103947148B (en) | Discrete transmission detecting device and method | |
| CN109756905B (en) | Method, device and equipment for adjusting coverage level threshold of Internet of things | |
| CN103701729B (en) | The method and device of problem adjacent area is determined during with frequency joint inspection | |
| CN104579415B (en) | Cell searching device and method as well as user equipment | |
| CN103701735A (en) | Multiple cell-based same-frequency joint detection method and device | |
| CN102075982B (en) | Method and device for determining interference source | |
| CN116683941B (en) | Radar signal detection method and device, electronic equipment and storage medium | |
| CN103973380B (en) | The feedback stacks energy detection method that a kind of user of solution arrives at random |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130403 Termination date: 20180315 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |