CN101803249B - A TDD testing device - Google Patents
A TDD testing device Download PDFInfo
- Publication number
- CN101803249B CN101803249B CN200780100698.2A CN200780100698A CN101803249B CN 101803249 B CN101803249 B CN 101803249B CN 200780100698 A CN200780100698 A CN 200780100698A CN 101803249 B CN101803249 B CN 101803249B
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- CN
- China
- Prior art keywords
- radio base
- base station
- signal power
- tdd
- mobile
- 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.)
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B17/00—Monitoring; Testing
- H04B17/30—Monitoring; Testing of propagation channels
- H04B17/309—Measuring or estimating channel quality parameters
- H04B17/345—Interference values
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- Engineering & Computer Science (AREA)
- Quality & Reliability (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Mobile Radio Communication Systems (AREA)
- Bidirectional Digital Transmission (AREA)
- Time-Division Multiplex Systems (AREA)
Abstract
In a TDD radio system, the interfering signal power is determined by shifting the uplink and downlink transmission time intervals of a time division duplex radio base station. The signal power in the shifted uplink transmission time slot is then measured so that the interfering signal power from surrounding radio base stations can be measured. Based on the measurements, the surrounding base stations as well as a new base station can be configured and tuned so that interference within the system is kept within an acceptable range.
Description
Technical field
The present invention relates to a kind of for testing and regulate the method and apparatus of radio system network.Especially, the present invention relates to a kind of for testing and regulate the method and apparatus of TDD radio base station.
Background technology
In cellular radio communications, there are a lot of different transmission plan and communication patterns.TDD (time division duplex) is a kind of communication pattern, radio base station and and the mobile radio station that connects of cellular radio system between its up link be arranged in identical frequency band but separated by time slot with downlink transmission, therefore only there is in one direction data traffic a time.In other communication pattern, the up link between radio base station and mobile radio station and downlink transmission are for example FDD (Frequency Division Duplexing (FDD)) by frequency division.
In TDD mobile system, if enough short of the time interval of up link and down link exists channel interaction, because bi-directional radio relay link has almost identical propagation conditions between up link and down link.In other words, if the switching time between two continuous up link and downlink transmission enough short, between these two transmission, just do not have propagation characteristic to change.
And TD SDMA TD-SCDMA is a kind of TDD (time division duplex) code division multiple access, cdma system, is the global 3G RAT (radio access technologies) specifying in a kind of 3GPP.TD-SCDMA and its evolution system, for example time division high speed downlink link packet access, the Long Term Evolution LTE TDD of TD-HSDPA and TD-SCDMA compatibility has obtained significant fast development in China.
Mobile communication has become a kind of global Driving technique of key.As a result, increasing RAT is by standardization and development, and increasing mobile radio access network RAN is established and moves.In a lot of countries and regions, particularly in modern state and area, much network coexisted, for example: GSM, WCDMA/HSDPA, CDMA2000/EvDo, WiFi/WiMax system etc.Now, a lot of operators are also by adopting identical or different RAT to build overlapping mobile network.
But, due to band signal energy leakage, between nearby frequency bands network, there is mutual interference.Particularly, mutual interference is the serious problems that have self-interference characteristic in cdma system.
TDD system is at identical frequency band transmission up link and down link signal, if the physical frame between therefore can not strict guarantee neighboring radio base station is synchronous, likely produces the interference of base station to base station.Because the propagation between radio base station (RBS) is similar with the propagation in free space, and transmit signal power and receiver sensitivity also relatively high, base station will have a strong impact on the robustness of network to the interference of base station.Especially, in TDD CDMA, one or more communities is likely blocked potentially to the interference of base station in serious base station.
Therefore, need the method and apparatus of the potential trouble configuration that can identify base station to avoid the interference of base station to base station.
Summary of the invention
A target of the present invention is overcome or at least reduce and some problems that configure the new radio base station with existing and be associated.
Another target of the present invention is to provide one can detect radio base station, the instrument of the potential interference configuration of the RBS that particularly specific fixed station or website are searched.
Another target of the present invention is to provide a kind of promotion and operates in the instrument of the configuration of the TDD radio base station in the environment with a lot of coexisted wireless electric system networks.
The method and system proposing by the claim of enclosing obtains these objects and other objects.Therefore, by TDD testing equipment is provided, this TDD testing equipment can be measured the signal power receiving on TDD radio base station during time slot in the time that radio base station transmits data traffic conventionally, and this equipment can be measured the power from the existing adjacent TDD radio base station in radio base station transmission range.Disturb by using at downlink transmission interim measurement uplink data the information of collecting, make system manager can configure radio base station and adjusting belongs to peripheral base stations identical or other radio system networks, make at the locational interference level of new radio base station within the acceptable range.
And in the time of configuration TDD system, the base station configuration (set up) that needs test to propose, so that by being used identical measured signal power to guarantee that base station to the interference of base station within the acceptable range.
Therefore, by configuration device, so that it can receive TDD RBS downlink time slots as uplink time slot, TDD radio base station can be measured between the interior interference of radio access technologies and radio access technologies and disturb the reference as RAT intranet and coexistence of systems processing as tester.
Can be advantageously used in and process or improve the network planning of some in system problem in RAT and between RAT according to testing equipment of the present invention.
Brief description of the drawings
By infinite example and with reference to corresponding more detailed description the present invention of accompanying drawing, wherein:
Fig. 1 a is the view illustrating by the region of the cellular radio system network coverage,
Fig. 1 b is the schematic diagram of the equipment for testing cellular radio system,
Fig. 2 is the flow chart of the step carried out when according to first aspect use test equipment, and
Fig. 3 is the flow chart of the step carried out when according to second aspect use test equipment.
Embodiment
In Fig. 1, the view of cellular radio system 100 is shown.This cellular radio system comprises many communities 101.Each community 101 is associated with radio base station (RBS) 103.The region being covered by cellular radio system 100 also may be belonged to identical or other other cellular radio systems of radio access technologies and be covered.But for reduced graph 1a, Fig. 1 a shows an only cellular radio system.
In order to test the interference of a certain position in cellular radio system region, a kind of testing equipment 105 is provided, this equipment comprises the radio base station that is configured to TDD, downlink time slots is set to uplink time slot in essence.
In Fig. 1 b, show the view of testing equipment 105.Therefore, equipment 105 comprises for measuring and the unit 111 of definite signal power.Equipment 105 also comprises unit 113 for handling up link and downlink transmission time slot and for control unit 111 and unit 113 and for receiving from user's input command with for the control unit 115 from the output of equipment is provided.This equipment is also applicable to use the computer program in the memory 117 that is carried in this equipment to be configured.In Fig. 2 and Fig. 3, the different step of carrying out is described in further detail in some different scenes in the time testing new TDD radio base station position.
In Fig. 2, illustrate when use test equipment be that radio base station new in radio system 100 is found suitable position and regulated the flow chart of the different step of carrying out when cellular radio system 100.
First,, in step 201, the testing equipment that comprises TDD radio base station is placed on to test position.Then, in step 203, TDD radio base station downlink time slots is set to correspond essentially to uplink time slot, to make TDD radio base station to measure the signal power from the existing TDD radio base station 103 of cellular radio system 100 as testing equipment, configure new radio base station in this cellular radio system 100.The for example time slot switching point of the radio base station by mobile TD-SCDMA radio base station or any evolution TD-SCDMA system execution step 203, makes downlink time slots move to uplink time slot to receive the signal from movable TDD radio base station around.
Then,, in step 205, regulate the configurable parameter of movable TDD radio base station around.The for example adjusting in step 205 comprises the downward-sloping of adjusting surrounding radio base stations.So in step 207, measure the signal power from the peripheral cell of reposition.If from the signal power of surrounding radio base stations within the acceptable range, just completed the adjusting to cellular radio system, and program stops in step 209.But, if the signal power receiving from surrounding radio base stations is not within the acceptable range, continue so described adjustment process, and program is got back to step 205.
In described another exemplary embodiments together with Fig. 3, testing equipment is used to provide test data, and this test data allows to for searching the configuration accepted that coexists between different radio access networks.Other radio access network can belong to identical radio access technologies or other radio access technologies.
First in step 301, TDD radio base station 105 is placed on test position.Then, in step 303, TDD radio base station downlink time slots is set to correspond essentially to uplink time slot, to make TDD radio base station to measure the signal power from the existing neighboring radio network of cellular radio system 100 as testing equipment.The for example time slot switching point of the radio base station by mobile TD-SCDMA radio base station or any evolution TD-SCDMA system execution step 303, makes downlink time slots move to uplink time slot to receive the signal from movable TDD radio base station around.。
Then,, in step 305, regulate new radio base station 105 and or the configurable parameter of surrounding radio base stations.The for example adjusting in step 305 comprises the downward-sloping of the new radio base station of adjusting.So in step 307, measure the signal power from surrounding's radio access network of reposition.If from the signal power of surrounding radio base stations within the acceptable range, just completed the adjusting to new radio base station 105, and program stops in step 309.But, if the signal power receiving from radio access network is not around within the acceptable range, continue so described adjustment process, and program is got back to step 305.
The present invention may be that software is realized, and is stored on computer program, and it can be loaded in the memory that is configured the computer of carrying out this software.
To provide efficient instrument to configure efficiently and regulate the whole radio system networks that comprise many different radio systems technologies to the radio system network operator of operation honeycomb TDD radio system network with method and apparatus described herein.
Claims (14)
1. a method for the interfering signal power in definite time division duplex cellular radio system, is characterized in that following steps:
The up link of-mobile TDD radio base station and the downlink transmission time interval are so that described TDD radio base station can receive TDD radio base station down link transmission time slot as ul transmissions time slot;
The signal power of-measurement in mobile ul transmissions time slot;
-signal power based on measuring in mobile ul transmissions time slot is determined interfering signal power.
2. method according to claim 1, is characterized in that following other step:
-in response to definite interfering signal power, regulate the parameter of at least one surrounding radio base stations of the radio system that belongs to identical with described TDD radio base station.
3. method according to claim 2, is characterized in that adjusting the inclination angle of at least one surrounding radio base stations.
4. according to the method described in any in claim 1-3, it is characterized in that following other step:
-in response to definite interfering signal power, regulate the parameter of at least one surrounding radio base stations of the other radio system that belongs to different from described TDD radio base station.
5. method according to claim 4, is characterized in that at least one surrounding radio base stations that belongs to other radio system adopts the other radio access technologies different from described TDD radio base station.
6. according to the method described in any in claim 1-3, it is characterized in that following other step:
-in response to definite interfering signal power, configure the parameter of described TDD radio base station.
7. according to the method described in any in claim 1-3, in the time that time division duplex cellular radio system is TD SDMA (TD-SCDMA) radio system, it is characterized in that the up link of mobile TDD radio base station and the downlink transmission time interval are to carry out by the time slot switching point of mobile TD-SCDMA radio base station.
8. for determining the equipment of interfering signal power for time division duplex cellular radio system, be characterised in that:
-for the up link of mobile TDD radio base station and the downlink transmission time interval so that described TDD radio base station can receive the device of TDD radio base station down link transmission time slot as ul transmissions time slot;
-for measuring the device in the signal power of mobile ul transmissions time slot; And
-determine the device of interfering signal power for the signal power based on measuring at mobile ul transmissions time slot.
9. equipment as claimed in claim 8, is characterized in that:
-regulate the device of the parameter of at least one surrounding radio base stations of the radio system that belongs to identical with described TDD radio base station for interfering signal power in response to definite.
10. equipment according to claim 9, is characterized in that: for adjusting the device at inclination angle of at least one surrounding radio base stations.
Equipment described in any in 11. according to Claim 8-10, is characterized in that:
-regulate the device of the parameter of at least one surrounding radio base stations of the other radio system that belongs to different from described TDD radio base station for interfering signal power in response to definite.
12. equipment according to claim 11, is characterized in that: at least one surrounding radio base stations that belongs to other radio system adopts the other radio access technologies different from described TDD radio base station.
Equipment described in any in 13. according to Claim 8-10, is characterized in that:
-for configure the device of the parameter of described TDD radio base station in response to definite interfering signal power.
Equipment described in any in 14. according to Claim 8-10, in the time that time division duplex cellular radio system is TD SDMA (TD-SCDMA) radio system, it is characterized in that being configured to for the up link of mobile TDD radio base station and the device in the downlink transmission time interval time slot switching point of mobile TD-SCDMA radio base station.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/SE2007/050664 WO2009038507A1 (en) | 2007-09-18 | 2007-09-18 | A tdd testing device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101803249A CN101803249A (en) | 2010-08-11 |
| CN101803249B true CN101803249B (en) | 2014-07-09 |
Family
ID=40468137
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200780100698.2A Expired - Fee Related CN101803249B (en) | 2007-09-18 | 2007-09-18 | A TDD testing device |
Country Status (3)
| Country | Link |
|---|---|
| CN (1) | CN101803249B (en) |
| TW (1) | TWI456922B (en) |
| WO (1) | WO2009038507A1 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9854553B2 (en) | 2015-04-03 | 2017-12-26 | Dali Systems Co. Ltd. | Method and system for link synchronization in an LTE-TDD architecture |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1168690A2 (en) * | 2000-06-26 | 2002-01-02 | Lucent Technologies Inc. | Method to dynamically determine interference and carrier-to-interference ratio during TDMA calls |
| CN1706141A (en) * | 2002-08-23 | 2005-12-07 | 纳维尼网络公司 | Method and system for multi-cell interference reduction in a wireless communication system |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NO20051366L (en) * | 2005-03-16 | 2006-09-18 | Telenor Asa | Procedure for canceling interference |
| WO2007064179A1 (en) * | 2005-12-03 | 2007-06-07 | Samsung Electronics Co., Ltd. | Method and apparatus for canceling neighbor cell interference signals in an orthogonal frequency division multiple access system |
| US8203998B2 (en) * | 2008-03-28 | 2012-06-19 | Qualcomm Incorporated | System and methods for cancelling interference in a communication system |
-
2007
- 2007-09-18 CN CN200780100698.2A patent/CN101803249B/en not_active Expired - Fee Related
- 2007-09-18 WO PCT/SE2007/050664 patent/WO2009038507A1/en active Application Filing
-
2008
- 2008-08-15 TW TW097131318A patent/TWI456922B/en not_active IP Right Cessation
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1168690A2 (en) * | 2000-06-26 | 2002-01-02 | Lucent Technologies Inc. | Method to dynamically determine interference and carrier-to-interference ratio during TDMA calls |
| CN1706141A (en) * | 2002-08-23 | 2005-12-07 | 纳维尼网络公司 | Method and system for multi-cell interference reduction in a wireless communication system |
Also Published As
| Publication number | Publication date |
|---|---|
| TW200929910A (en) | 2009-07-01 |
| CN101803249A (en) | 2010-08-11 |
| TWI456922B (en) | 2014-10-11 |
| WO2009038507A1 (en) | 2009-03-26 |
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| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140709 Termination date: 20190918 |