CN101247165B - Networking method of TD-SCDMA system multi-frequency point community - Google Patents
Networking method of TD-SCDMA system multi-frequency point community Download PDFInfo
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- CN101247165B CN101247165B CN2007100733500A CN200710073350A CN101247165B CN 101247165 B CN101247165 B CN 101247165B CN 2007100733500 A CN2007100733500 A CN 2007100733500A CN 200710073350 A CN200710073350 A CN 200710073350A CN 101247165 B CN101247165 B CN 101247165B
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Abstract
The present invention relates to the wireless communication technology field, especially relates to a net method of TD-SCDMA (time-division synchronous code division multiple access) system multi frequency point district. The system includes a network and a terminal, the network includes a plurality of multi frequency point districts. A service channel of the district is built in a main frequency point and/or an assist frequency point, and adjacent multi frequency point districts select different carrier waves as the main frequency point. A downlink emission power of the main frequency of any multi frequency point district is set always not smaller than the downlink emission power of any assist frequency in the multi frequency point district. The inventive method can reduce effectively mutual interference at district peripheral dedicated channel between districts, at the same time has a strong service sustaining power for large power demand, and has wide downlink cover.
Description
Technical field
The present invention relates to wireless communication technology field, relate in particular to the network-building method of a kind of TD-SCDMA (TD SDMA inserts Time Division-Synchronous Code Division Multiple Access) system multi-frequency point community.
Background technology
The balance of capacity, covering, professional diversity and system effectiveness is finished in commercial TD-SCDMA networking requirement, to reach the target of maximization client efficiency of investment.In present TD-SCDMA commercial network, the technology of multi-frequency-point community is widely adopted.
The common signal channel of multi-frequency-point community, physical control channel (PCCPCH), auxiliary public physical control channel (SCCPCH), ascending pilot channel (UpPCH), downlink pilot frequency channel (DwPCH) etc. only are configured on the dominant frequency point altogether to comprise Physical Random Access Channel (PRACH), physical access channel (FPACH), Your Majesty.Dedicated channel both can be based upon on the dominant frequency point, also can be based upon on the auxilliary frequency.Do not have common signal channel on the auxiliary frequency, have only dedicated channel (DCH).
The multi-frequency-point community networking of the typical TD-SCDMA that adopts at present extensively is as shown in Figure 1: each sub-district is provided with a plurality of frequencies (F1, F2, F3), wherein the carrier wave that each cell selecting is different is a dominant frequency, F1, F2 can be set respectively as shown in the figure, F3 is the dominant frequency carrier wave of CELL A, CELL B, CELL C, accordingly other carrier waves of each sub-district be set to auxilliary frequently.The mutual interference level of the common signal channel of the whole network obtains very big inhibition in this networking plan, has promoted the performance of network, is one of TD-SCDMA networking solution preferably.But under this networking plan, had following factor affecting at least multifrequency point network advantages performance:
1. the total descending power in sub-district is divided equally by carrier wave, with respect to the single carrier networking, the spendable descending power of every business changes into and is subject to the base station down gross power divided by carrier number from being subject to the base station down gross power, caused poor to the big business support ability of power demand, cause network problems such as power resource " fragment ", descending covering deficiency easily.
2. the dedicated channel of cell edge is disturbed and not to be had controlledly, and multi-frequency-point community has significantly reduced the minizone mutual interference level of sub-district common signal channel, but the minizone mutual interference level of the dedicated channel of cell edge does not improve.
Above-mentioned 2 reasons have limited the performance of performance potential of the multi-frequency-point community networking of TD-SCDMA system.
Summary of the invention
The minizone mutual interference level that technical problem to be solved by this invention provides a kind of dedicated channel that reduces cell edge is simultaneously to the network-building method of the TD-SCDMA system multi-frequency point community of the big strong descending covering wide of business support ability of power demand.
For solving the problems of the technologies described above, the present invention is achieved through the following technical solutions: a kind of network-building method of TD-SCDMA system multi-frequency point community, described system comprises network and terminal, this network comprises some multi-frequency-point communities, each sub-district is provided with dominant frequency point and assists frequency, the Traffic Channel of sub-district is based upon dominant frequency point and/or assists frequency, adjacent multi-frequency-point community selects different carrier waves as the dominant frequency point, and it is characterized in that: the dominant frequency down transmitting power that arbitrary multi-frequency-point community is set is not less than the down transmitting power of arbitrary auxilliary frequency of this multi-frequency-point community all the time.
Adopt method of the present invention, the dominant frequency of arbitrary multi-frequency-point community of TD-SCDMA network has been concentrated the most descending power of this multi-frequency-point community, and the auxilliary descending power that uses restriction frequently, and be limited in adjacent sub-district with carrier power frequently with this sub-district dominant frequency.Like this, the sub-district of any multifrequency point in the network all forms the isolated island of main and auxiliary frequency, has effectively controlled the co-channel interference of Traffic Channel.At cell edge, form signal by the dominant frequency of each sub-district inequality and connect, form the structure of alien frequencies switch area.Inner dominant frequency can be concentrated most cell energies in the sub-district simultaneously, so that finish the business and the covering demand of big descending power, has improved the power service efficiency of multi-frequency-point community.According to the proposed method, the means by wireless power management make the performance potential of multi-frequency-point community networking of TD-SCDMA network be able to further performance.
Description of drawings
The schematic diagram of the network-building method of TD-SCDMA system multi-frequency point community when Fig. 1 is the N=3 that uses always at present,
The schematic diagram of Fig. 2 network-building method of TD-SCDMA system multi-frequency point community during for N=3 of the present invention.
Embodiment
Introducing a specific embodiment below in conjunction with accompanying drawing is described in further details method of the present invention.As shown in Figure 2: with N=3 is the multi-frequency-point community network-building method of the present invention of example explanation.The system that implements this method comprises network and terminal, this network comprises 3 multi-frequency-point community CELL A, CELL B, CELL C, the Traffic Channel of each sub-district is based upon dominant frequency point and/or assists frequency, add up to F1, F2 and F3, adjacent multi-frequency-point community selects different carrier waves as the dominant frequency point, as scheming: the dominant frequency point of CELL A, CELL B, CELL C is selected F1, F2 and F3 respectively, makes the dominant frequency down transmitting power of arbitrary multi-frequency-point community be not less than the down transmitting power of arbitrary auxilliary frequency of this multi-frequency-point community all the time by scheduling simultaneously.
Described scheduling dominant frequency transmitting power and the auxilliary concrete grammar of penetrating power that takes place frequently can be: the maximum that the multi-frequency-point community dominant frequency is set allows transmitting power to allow transmitting power greater than the auxilliary maximum frequently of multi-frequency-point community, make the transmitting power of multi-frequency-point community dominant frequency be not less than auxilliary transmitting power frequently all the time by scheduling, and the transmitting power of each frequency of restriction multi-frequency-point community is not more than the maximum permission transmitting power of each frequency; Transmitting power sum on each carrier wave of when crack multi-frequency-point community simultaneously in office can not be greater than the sub-district maximum transmission power.
Described dominant frequency transmitting power and the auxilliary concrete method to set up of penetrating power that takes place frequently can be: the maximum that each carrier frequency of multi-frequency-point community is set allows transmitting power to equal the maximum transmission power of sub-district, make the transmitting power of multi-frequency-point community dominant frequency be not less than auxilliary transmitting power frequently all the time by scheduling, the transmitting power sum on each carrier wave of when crack multi-frequency-point community simultaneously in office can not be greater than the sub-district maximum transmission power.
Be positioned at cell edge when terminal location when no matter adopting above-mentioned any dispatching method, when perhaps being stopped by atural object, the Traffic Channel priority scheduling is used dominant frequency point carrier wave.And when terminal location was positioned at localized area, inside, sub-district, Traffic Channel can be dispatched and be used dominant frequency point carrier wave or auxilliary frequency carrier wave.If the Traffic Channel of terminal is positioned on the auxilliary frequency carrier wave of multi-frequency-point community when localized area, inside, sub-district, inner localized area is when cell edge moves and leave localized area, inside, sub-district from the sub-district when terminal, and the Traffic Channel of terminal need be dispatched on the dominant frequency point carrier wave of multi-frequency-point community.In said process, system can and/or require the mode of terminal to report measurement report to obtain by out-hole run to the judgement whether terminal is positioned at inner localized area, sub-district.For guaranteeing that the inventive method has stronger tenability to the big business of power demand such as cluster, MBMS business, this moment, the Traffic Channel priority scheduling was used dominant frequency point carrier wave.
Claims (9)
1. the network-building method of a TD-SCDMA system multi-frequency point community, described system comprises network and terminal, this network comprises some multi-frequency-point communities, each sub-district is provided with dominant frequency point and assists frequency, the Traffic Channel of sub-district is based upon dominant frequency point and/or assists frequency, adjacent multi-frequency-point community selects different carrier waves as the dominant frequency point, and it is characterized in that: the dominant frequency down transmitting power that arbitrary multi-frequency-point community is set is not less than the down transmitting power of arbitrary auxilliary frequency of this multi-frequency-point community all the time.
2. network-building method as claimed in claim 1, it is characterized in that: described dominant frequency down transmitting power and the auxilliary concrete method to set up of down transmitting power frequently can be: the maximum that the multi-frequency-point community dominant frequency is set allows transmitting power to allow transmitting power greater than the auxilliary maximum frequently of multi-frequency-point community, make the transmitting power of multi-frequency-point community dominant frequency be not less than auxilliary transmitting power frequently all the time by scheduling, and the transmitting power of each frequency of restriction multi-frequency-point community is not more than the maximum permission transmitting power of each frequency; Transmitting power sum on each carrier wave of when crack multi-frequency-point community simultaneously in office can not be greater than the sub-district maximum transmission power.
3. network-building method as claimed in claim 1, it is characterized in that: described dominant frequency down transmitting power and the auxilliary concrete method to set up of down transmitting power frequently can be: the maximum that each carrier wave of multi-frequency-point community is set allows transmitting power to equal the maximum transmission power of sub-district, make the transmitting power of multi-frequency-point community dominant frequency be not less than auxilliary transmitting power frequently all the time by scheduling, the transmitting power sum on each carrier wave of when crack multi-frequency-point community simultaneously in office can not be greater than the sub-district maximum transmission power.
4. as claim 2 or 3 described network-building methods, it is characterized in that: when terminal location is positioned at cell edge, when perhaps being stopped by atural object, the Traffic Channel priority scheduling is used dominant frequency point carrier wave.
5. as claim 2 or 3 described network-building methods, it is characterized in that: when terminal location was positioned at localized area, inside, sub-district, dominant frequency point carrier wave or auxilliary frequency carrier wave were used in the Traffic Channel scheduling.
6. as claim 2 or 3 described network-building methods, it is characterized in that: if the Traffic Channel of terminal is positioned on the auxilliary frequency carrier wave of multi-frequency-point community when localized area, inside, sub-district, inner localized area is when cell edge moves and leave localized area, inside, sub-district from the sub-district when terminal, and the Traffic Channel of terminal need be dispatched on the dominant frequency point carrier wave of multi-frequency-point community.
7. network-building method as claimed in claim 5 is characterized in that: the judgement whether system is positioned at inner localized area, sub-district to terminal is by out-hole run and/or require the mode of terminal to report measurement report to obtain.
8. network-building method as claimed in claim 6 is characterized in that: the judgement whether system is positioned at inner localized area, sub-district to terminal is by out-hole run and/or require the mode of terminal to report measurement report to obtain.
9. as claim 2 or 3 described network-building methods, it is characterized in that: during the big descending power of the service needed that communicates when terminal and sub-district, the Traffic Channel priority scheduling is used dominant frequency point carrier wave.
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| CN101742519B (en) * | 2008-11-05 | 2013-07-17 | 中国移动通信集团公司 | Frequency resource allocation method and device |
| CN101741795B (en) * | 2008-11-17 | 2015-05-20 | 中兴通讯股份有限公司 | Multi-frequency point multi-site accessing method and device |
| CN102223642B (en) * | 2010-04-15 | 2015-05-20 | 电信科学技术研究院 | Frequency planning method and apparatus for multicarrier system |
| CN105101449B (en) * | 2014-05-13 | 2018-09-04 | 中国移动通信集团广东有限公司 | A kind of method and client terminal for realizing pilot frequency point networking |
| CN115942472B (en) * | 2022-11-30 | 2024-03-12 | 中国科学院上海微系统与信息技术研究所 | Concurrent scheduling and resource allocation method in wireless ad hoc network |
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| CN1700612A (en) * | 2005-06-22 | 2005-11-23 | 中兴通讯股份有限公司 | Downlink power control method in multi-carrier cell |
| CN1717092A (en) * | 2004-06-29 | 2006-01-04 | 中兴通讯股份有限公司 | Method for dynamically regulating auxiliary carrier frequency of multiple carrier frequency small village in radio communication system |
| CN1731749A (en) * | 2004-08-07 | 2006-02-08 | 华为技术有限公司 | Multi-carrier frequency system access method |
| CN1735258A (en) * | 2004-08-10 | 2006-02-15 | 中兴通讯股份有限公司 | Multi-carrier frequency cell major and minor carrier frequency adjusting method in TD-SCDMA system |
| CN1750513A (en) * | 2005-10-21 | 2006-03-22 | 中兴通讯股份有限公司 | Method for realizing high speed downward block service in multiple frequency spot TD-SCDMA system |
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| CN1717092A (en) * | 2004-06-29 | 2006-01-04 | 中兴通讯股份有限公司 | Method for dynamically regulating auxiliary carrier frequency of multiple carrier frequency small village in radio communication system |
| CN1731749A (en) * | 2004-08-07 | 2006-02-08 | 华为技术有限公司 | Multi-carrier frequency system access method |
| CN1735258A (en) * | 2004-08-10 | 2006-02-15 | 中兴通讯股份有限公司 | Multi-carrier frequency cell major and minor carrier frequency adjusting method in TD-SCDMA system |
| CN1700612A (en) * | 2005-06-22 | 2005-11-23 | 中兴通讯股份有限公司 | Downlink power control method in multi-carrier cell |
| CN1750513A (en) * | 2005-10-21 | 2006-03-22 | 中兴通讯股份有限公司 | Method for realizing high speed downward block service in multiple frequency spot TD-SCDMA system |
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