CN101790133A - Method for eliminating uplink interference of home base station - Google Patents
Method for eliminating uplink interference of home base station Download PDFInfo
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- CN101790133A CN101790133A CN200910143607A CN200910143607A CN101790133A CN 101790133 A CN101790133 A CN 101790133A CN 200910143607 A CN200910143607 A CN 200910143607A CN 200910143607 A CN200910143607 A CN 200910143607A CN 101790133 A CN101790133 A CN 101790133A
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Abstract
The invention discloses a method for eliminating uplink interference of a home base station, which is characterized in that the home base station detects the uplink interference produced by a terminal serving for a macro base station by using a receiving antenna, if the uplink interference is detected by the home base station, the resources (having little interference) of the terminal of a closed user group (CSG) can be allocated through reconfiguration or dispatching, and the interference can be avoided by Blanking disturbed resources.
Description
Technical field
The present invention relates to the third generation (3G) mobile communication system and Long Term Evolution (LTE) mobile communication system, particularly a kind of method that reduces the uplink interference of Home eNodeB.
Background technology
Home eNodeB is a kind of small-sized, and lower powered base station is mainly used in the indoor place of family or medium-sized and small enterprises etc., is also referred to as Femto, and Femto cell flies honeycomb.Home eNodeB is that Ubiquisys company proposes, and chief reason is that the nascent networking emphasis of the third generation (3G) mobile communication system is outdoor covering, and indoor communication quality is poor.Particularly do not having the home environment of indoor distributed system, needing near window usually, the quality of communication just can make moderate progress.And the increasing of the dual-mode handset of ripe and the commercial WIFI and the honeycomb of WIFI technology, 3G voice-and-data business all might flow to WIFI, so the proposition of Home eNodeB has just obtained the support of operator.
Yet Home eNodeB need not operator and installs as an electronic product, and is operated in the frequency band of operator's mandate, and macro base station, exist to disturb between little base station, consider the interference of mobile communication system inside of the standard of frequency division multiplexing (FDD), interference type has:
| Interference source | Disturbed source | |
| ??1 | Home eNodeB up | Grand (little) base station up |
| ??2 | Home eNodeB descending | Grand (little) base station descending |
| ??3 | Grand (little) base station up | Home eNodeB up |
| ??4 | Grand (little) base station descending | Home eNodeB descending |
| ??5 | Home eNodeB up | Another Home eNodeB up |
| ??6 | Home eNodeB descending | Another Home eNodeB descending |
If suppose the system that grand (little) base station is synchronous with family base station system and the up-downgoing transfer point is identical, disturb scene that above-mentioned six kinds scene is also arranged for time division multiplexing (TDD).If system synchronization, then there is the interference of cross time-slot in the transfer point difference of up-downgoing.If system is asynchronous, also will there be the interference of complicated cross time-slot in the situation of interference, therefore not recommend to adopt asynchronous and have the mode of cross time-slot.
The existing method that reduces the interference of Home eNodeB has: the maximum transmission power of adaptively modifying Home eNodeB.The maximum transmission power of adaptively modifying Home eNodeB need come the adaptively modifying transmitting power by measuring the interference that self produces by Home eNodeB, be applicable to the descending descending interference that reduces Home eNodeB to grand (little) base station, just reduce to serve the interference of the mobile phone of macro base station, this interference is particularly serious when particularly the distance of this mobile phone and Home eNodeB is closer.
The detector of Home eNodeB (sniffer) can be used to detect descending interference, can detect macro base station and the descending interference of Home eNodeB on every side, the reception frequency of antenna is descending reception frequency, and Home eNodeB has the function of measurement of the receiver of part of cell phone.
And for the uplink interference that the terminal of the non-closed user group (CSG) of close at random Home eNodeB is brought, be a problem that is not easy to solve always, terminal can be at random near the Home eNodeB that does not belong to its closed user group (CSG), up generation to Home eNodeB is disturbed, and reduces the uplink throughput of Home eNodeB.
Because the above-mentioned interference source and the interactional process in disturbed source, this patent has proposed the method for Home eNodeB elimination uplink interference, be characterised in that the uplink interference that Home eNodeB utilizes reception antenna to detect to serve the terminal of macro base station to produce, if Home eNodeB has detected interference, can distribute the terminal of this CSG sub-district to disturb little resource by the method for reprovision or scheduling, also can the disturbed resource of Blanking evade interference there being the resource of disturbing.
Summary of the invention
In view of this, the method for the uplink interference that produces of the main purpose of the present invention terminal that is to provide a kind of Home eNodeB to eliminate macro base station.
For achieving the above object, technical scheme of the present invention specifically is achieved in that
1, the device of Home eNodeB collocating uplink interference detector.
2, method according to claim 1 is characterized in that, the up interference that described Home eNodeB need produce according to the terminal of utilizing existing reception antenna to detect to serve macro base station or non-closed user group (CSG).
3, method according to claim 2, it is characterized in that, the described reception antenna that utilizes the WCDMA Home eNodeB that Wideband Code Division Multiple Access (WCDMA) is inserted the Home eNodeB of (WCDMA) detects the uplink interference that the terminal of serving macro base station produces, distinguish out the signal of the terminal that does not belong to this Home eNodeB by the different qualities of scrambler, the interference that produces of the terminal of macro base station or non-this closed user group (CSG) sub-district just.
4, method according to claim 2, it is characterized in that, the uplink interference that the terminal of utilizing the TD-SCDMA antenna to detect to serve macro base station of the described Home eNodeB that TD SDMA is inserted (TD-SCDMA) produces, the training sequence code of the TD-SCDMA system that passes through is distinguished out the signal of the terminal that does not belong to this Home eNodeB, the interference of the terminal of macro base station generation just.Detect because the bigger uplink interference that the terminal of macro base station produces near Home eNodeB very much by the interference signal code domain power (Timeslot ISCP) of measuring each time slot.
5, method according to claim 2, it is characterized in that, up interference-reception interference power (Received Interference Power) that the terminal of utilizing the LTE antenna to detect to serve macro base station of described Home eNodeB with Long Term Evolution (LTE) produces, this interference comprises thermal noise.
6, method according to claim 3 is characterized in that, Home eNodeB need be measured the interference of each code channel, and Home eNodeB disturbs little code channel resource according to the terminal that the uplink interference situation is distributed in this closed user group (CSG) sub-district.
7, method according to claim 4, it is characterized in that, Home eNodeB need be measured the interference of each code channel of each ascending time slot, and Home eNodeB disturbs little code channel resource according to the terminal that the uplink interference situation is distributed in this closed user group (CSG) sub-district.
8, method according to claim 5 is characterized in that, Home eNodeB need be measured the interference of each Physical Resource Block, and Home eNodeB disturbs little Physical Resource Block according to the terminal that the uplink interference situation is distributed in this closed user group (CSG) sub-district.
9, according to claim 6,7,8 described methods is characterized in that, if Home eNodeB has detected interference, can evade interference by the disturbed resource of Blanking.
As seen from the above technical solution, main purpose of the present invention is to provide a kind of Home eNodeB to eliminate the method for uplink interference, be characterised in that the uplink interference that Home eNodeB utilizes reception antenna to detect to serve the terminal of macro base station to produce, if Home eNodeB has detected interference, can distribute the terminal of this CSG sub-district to disturb little resource by the method for reprovision or scheduling, also can evade interference by the disturbed resource of Blanking.
Description of drawings
Fig. 1 is that the terminal of macro base station is for the up interference of Home eNodeB
Embodiment
For making purpose of the present invention, technical scheme and advantage clearer, below with reference to the accompanying drawing embodiment that develops simultaneously, the present invention is described in further detail.
Main thought of the present invention is to utilize the up reception antenna of Home eNodeB to detect the uplink interference of Home eNodeB.
For example up frequency range is 1920-1980MHz for the Home eNodeB of WCDMA, and descending frequency range is 2110-2170MHz.That is to say that Home eNodeB transmitting-receiving adopts two antennas, wherein the antenna of up 1920-1980MHz is a reception antenna, is used to receive the signal of the terminal emission of Home eNodeB.And the antenna of descending 2110-2170MHz is a transmitting antenna, is used to launch the signal of Home eNodeB.For the Home eNodeB of WCDMA, sniffer is the descending interference that detects macro base station by a new reception antenna 2110-2170MHz.The invention is characterized in the uplink interference that Home eNodeB utilizes the reception antenna of 1920-1980MHz to detect to serve the terminal of grand (little) base station or non-closed user group (CSG) to produce, distinguish out the signal of the terminal that does not belong to this Home eNodeB by the different qualities of scrambler, the interference that the terminal of just grand (little) base station or the terminal of non-closed user group (CSG) produce.
The frequency range of the antenna of up-downgoing for example all is 2010-2025MHz for the Home eNodeB of TD-SCDMA system, and Home eNodeB transmits and receives signal by this surface antenna, obtains the link of up-downgoing by the proportioning of control up-downgoing.The up interference that the terminal that the Home eNodeB of TD-SCDMA system utilizes this surface antenna to detect to serve macro base station produces, the Midamble sign indicating number of the TD-SCDMA system that passes through is distinguished out the signal of the terminal that does not belong to this Home eNodeB, the interference of the terminal of the terminal of macro base station or non-closed user group (CSG) generation just.Just detect because the close bigger uplink interference that produces of the terminal of macro base station by the interference TimeslotISCP that measures each time slot.
Home eNodeB for the LTE system, uplink interference-reception interference power (Received Interference Power) that the terminal of utilizing up reception antenna to detect to serve macro base station or the terminal of non-closed user group (CSG) produce, this interference comprises thermal noise.
Based on this method, Home eNodeB can detect the uplink interference of bringing of non-CSG, and accordingly, the following guild of Home eNodeB produces the terminal (comprising the terminal of serving macrocell and other Home eNodeB) near this Home eNodeB and disturbs.The transmitting power that need reduce Home eNodeB equally adaptively reduces to disturb.
If Home eNodeB has detected interference, be timeslot-level interference for the Home eNodeB of TD-SCDMA, comprise the interference of up-downgoing, can adopt Blanking to fall this time slot and evade interference.Thereby cause vicious circle with the power ramp that prevents Home eNodeB.Home eNodeB needs to monitor the interference Timeslot ISCP of each time slot always or periodically.If the interference of this time slot has dropped to the scheduling that the following Home eNodeB of value that can receive just recovers this time slot.
More preferably, can reduce by the interference code channel that Blanking falls this time slot to disturb.
For the Home eNodeB of WCDMA,, can only fall disturbed code channel by blanking and reduce to disturb owing on frequency domain, adopt the frequency band of a 5MHz.
Descending interference is the interference of Physical Resource Block level for the Home eNodeB of LTE, adopts the disturbed Physical Resource Block of Blanking to evade interference.
The above is preferred embodiment of the present invention only, is not to be used to limit protection scope of the present invention.All any modifications of being done within the spirit and principles in the present invention, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (9)
1. the device of Home eNodeB collocating uplink interference detector.
2. method according to claim 1 is characterized in that, the up interference that described Home eNodeB need produce according to the terminal of utilizing existing reception antenna to detect to serve macro base station or non-closed user group (CSG).
3. method according to claim 2, it is characterized in that, the described reception antenna that utilizes the WCDMA Home eNodeB that Wideband Code Division Multiple Access (WCDMA) is inserted the Home eNodeB of (WCDMA) detects the uplink interference that the terminal of serving macro base station produces, distinguish out the signal of the terminal that does not belong to this Home eNodeB by the different qualities of scrambler, the interference that produces of the terminal of macro base station or non-this closed user group (CSG) sub-district just.
4. method according to claim 2, it is characterized in that, the uplink interference that the terminal of utilizing the TD-SCDMA antenna to detect to serve macro base station of the described Home eNodeB that TD SDMA is inserted (TD-SCDMA) produces, the training sequence code of the TD-SCDMA system that passes through is distinguished out the signal of the terminal that does not belong to this Home eNodeB, the interference of the terminal of macro base station generation just.Detect because the bigger uplink interference that the terminal of macro base station produces near Home eNodeB very much by the interference signal code domain power (Timeslot ISCP) of measuring each time slot.
5. method according to claim 2, it is characterized in that, up interference-reception interference power (ReceivedInterference Power) that the terminal of utilizing the LTE antenna to detect to serve macro base station of described Home eNodeB with Long Term Evolution (LTE) produces, this interference comprises thermal noise.
6. method according to claim 3 is characterized in that Home eNodeB need be measured the interference of each code channel, and Home eNodeB disturbs little code channel resource according to the terminal that the uplink interference situation is distributed in this closed user group (CSG) sub-district.
7. method according to claim 4, it is characterized in that, Home eNodeB need be measured the interference of each code channel of each ascending time slot, and Home eNodeB disturbs little code channel resource according to the terminal that the uplink interference situation is distributed in this closed user group (CSG) sub-district.
8. method according to claim 5 is characterized in that Home eNodeB need be measured the interference of each Physical Resource Block, and Home eNodeB disturbs little Physical Resource Block according to the terminal that the uplink interference situation is distributed in this closed user group (CSG) sub-district.
9. according to claim 6,7,8 described methods is characterized in that, if Home eNodeB has detected interference, can evade interference by the disturbed resource of Blanking.
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| CN200910143607A CN101790133A (en) | 2009-05-27 | 2009-05-27 | Method for eliminating uplink interference of home base station |
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| CN200910143607A CN101790133A (en) | 2009-05-27 | 2009-05-27 | Method for eliminating uplink interference of home base station |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101959203A (en) * | 2010-10-11 | 2011-01-26 | 清华大学 | Wireless communication method of LTE (Long Term Evolution) network comprising macro cell base station and home base station |
| CN102595427A (en) * | 2011-01-07 | 2012-07-18 | 株式会社Ntt都科摩 | Radio communication method and radio base station |
| CN102625388A (en) * | 2011-01-28 | 2012-08-01 | 华为技术有限公司 | Switching method, base station and system for the same |
| WO2014146533A1 (en) * | 2013-03-21 | 2014-09-25 | 华为技术有限公司 | Interference suppression method, macro base station, micro base station and system |
| CN104137591A (en) * | 2012-03-05 | 2014-11-05 | 索尼公司 | Communication control device, communication control method, and base station |
| WO2015014194A1 (en) * | 2013-07-30 | 2015-02-05 | 华为技术有限公司 | Interference coordination method, device and system |
| WO2015139247A1 (en) * | 2014-03-19 | 2015-09-24 | 华为技术有限公司 | Cell node and uplink interference processing system and method |
| WO2018082043A1 (en) * | 2016-11-04 | 2018-05-11 | 广东欧珀移动通信有限公司 | Communication method, terminal, and network device |
| CN111755823A (en) * | 2020-08-07 | 2020-10-09 | 上海增信电子有限公司 | Multi-antenna device comprising directional antenna and omnidirectional antenna |
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2009
- 2009-05-27 CN CN200910143607A patent/CN101790133A/en active Pending
Cited By (24)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101959203B (en) * | 2010-10-11 | 2012-10-24 | 清华大学 | Wireless communication method of LTE (Long Term Evolution) network comprising macro cell base station and home base station |
| CN101959203A (en) * | 2010-10-11 | 2011-01-26 | 清华大学 | Wireless communication method of LTE (Long Term Evolution) network comprising macro cell base station and home base station |
| CN102595427A (en) * | 2011-01-07 | 2012-07-18 | 株式会社Ntt都科摩 | Radio communication method and radio base station |
| CN102595427B (en) * | 2011-01-07 | 2015-08-19 | 株式会社Ntt都科摩 | Wireless communications method and wireless base station |
| US8918107B2 (en) | 2011-01-28 | 2014-12-23 | Huawei Technologies Co., Ltd. | Handover method, base station and system |
| CN102625388A (en) * | 2011-01-28 | 2012-08-01 | 华为技术有限公司 | Switching method, base station and system for the same |
| CN102625388B (en) * | 2011-01-28 | 2014-09-03 | 华为技术有限公司 | Switching method, base station and system for the same |
| CN104137591A (en) * | 2012-03-05 | 2014-11-05 | 索尼公司 | Communication control device, communication control method, and base station |
| CN104137591B (en) * | 2012-03-05 | 2018-04-06 | 索尼公司 | Communication control unit, communication control method and base station |
| WO2014146533A1 (en) * | 2013-03-21 | 2014-09-25 | 华为技术有限公司 | Interference suppression method, macro base station, micro base station and system |
| WO2015014194A1 (en) * | 2013-07-30 | 2015-02-05 | 华为技术有限公司 | Interference coordination method, device and system |
| CN104349352A (en) * | 2013-07-30 | 2015-02-11 | 华为技术有限公司 | Interference coordination method, equipment and system |
| CN104349352B (en) * | 2013-07-30 | 2018-10-12 | 华为技术有限公司 | A kind of method, apparatus and system of interference coordination |
| CN105874868A (en) * | 2014-03-19 | 2016-08-17 | 华为技术有限公司 | Cell node and uplink interference processing system and method |
| WO2015139247A1 (en) * | 2014-03-19 | 2015-09-24 | 华为技术有限公司 | Cell node and uplink interference processing system and method |
| CN105874868B (en) * | 2014-03-19 | 2019-10-25 | 华为技术有限公司 | A kind of cell Node, uplink interference processing system and method |
| WO2018082043A1 (en) * | 2016-11-04 | 2018-05-11 | 广东欧珀移动通信有限公司 | Communication method, terminal, and network device |
| CN109792727A (en) * | 2016-11-04 | 2019-05-21 | Oppo广东移动通信有限公司 | Communication means, terminal and the network equipment |
| CN109792727B (en) * | 2016-11-04 | 2020-12-08 | Oppo广东移动通信有限公司 | Communication method, terminal and network equipment |
| CN112399605A (en) * | 2016-11-04 | 2021-02-23 | Oppo广东移动通信有限公司 | Method and device for transmitting uplink channel |
| CN112399606A (en) * | 2016-11-04 | 2021-02-23 | Oppo广东移动通信有限公司 | Method and device for transmitting uplink channel |
| TWI733934B (en) * | 2016-11-04 | 2021-07-21 | 大陸商Ｏｐｐｏ廣東移動通信有限公司 | Communication method, terminal, and network equipment |
| US11088783B2 (en) | 2016-11-04 | 2021-08-10 | Guangdong Oppo Mobile Telecommunications Corp., Ltd. | Communication method, terminal and network device |
| CN111755823A (en) * | 2020-08-07 | 2020-10-09 | 上海增信电子有限公司 | Multi-antenna device comprising directional antenna and omnidirectional antenna |
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Application publication date: 20100728 |