CN1941988A - Method for allocating multiple carrier-frequency domain - Google Patents
Method for allocating multiple carrier-frequency domain Download PDFInfo
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- CN1941988A CN1941988A CNA2005101080540A CN200510108054A CN1941988A CN 1941988 A CN1941988 A CN 1941988A CN A2005101080540 A CNA2005101080540 A CN A2005101080540A CN 200510108054 A CN200510108054 A CN 200510108054A CN 1941988 A CN1941988 A CN 1941988A
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Abstract
The method comprises: the wireless network controller sets several frequency points for a cell; wherein, there are a main carrier frequency point and more than one assistant carrier frequency points, and one public channel is set on each main carrier frequency point; each main carrier frequency point corresponds to a visible cell ID, and each assistant carrier frequency point corresponds to a hidden cell ID; the radio network controller sends the visible cell ID to user terminal; the user terminal measures the main frequency point corresponding to the visible cell ID; the radio network controller sends the main carrier frequency ID to the user terminal; the user terminal measures the main carrier frequency.
Description
Technical field
The present invention relates to TD SDMA (TD-SCDMA) technical field, be meant especially a kind of in this system the method for allocating multiple carrier-frequency domain.
Background technology
The physical channel of TD-SCDMA comprises three-decker: ground floor is a radio frames, and the second layer is a subframe, and the 3rd layer is time slot.Specifically, physical channel is made up of several radio frames, and each radio frames is divided into continuous two subframes again, and each subframe comprises seven business time-slots and three special time slots again.As shown in Figure 1, the 0th time slot fixed allocation is to descending in seven business time-slots, and the 1st time slot fixed allocation is to up, and remaining time slot can distribute arbitrarily between up-downgoing.Three special time slots of oblique line filling part are respectively descending pilot frequency time slot (DwPTS), uplink pilot time slot (UpPTS), and protection time slot (GP).Wherein, the DwPTS time slot is used for sending descending synchronous code, finishes down-going synchronous; The UpPTS time slot is used for sending uplink synchronous code, and it is synchronous to finish initial uplink.Wherein, DwPTS comprises 96 chips (chip), and GP comprises 96chip, and UpPTS comprises 160chip, and the width of each chip is 0.78125us.
In TD-SCDMA, because the DwPTS curtailment causes line search difficulty under the user terminal (UE), especially the sub-district covers under the very little situation, and UE is difficult to determine Serving cell.And because TS0 does not use the wave beam forming technology generally speaking, it is excessive to cause TS0 partly to disturb.Therefore, use the method for multi-carrier frequency cell to overcome above-mentioned defective at present.
The concrete configuration scheme of prior art multi-carrier frequency cell is as follows:
A multi-carrier frequency cell comprises a main carrier frequency and several assistant carrier frequencies, and only on main carrier frequency, send common signal channel, these common signal channels specifically comprise DwPTS, P-CCPCH, S-CCPCH, PRACH, UpPTS and FPACH channel, and the information of shared this main carrier frequency of assistant carrier frequency is carried out the common signal channel operation, carries out the operation of dedicated channel and shared channel on other frequencies.All terminals are operated on the main carrier frequency under free time, CELL-FACH, CELL-PCH, URA-PCH state, when needs enter the CELL-DCH state, can switch on the assistant carrier frequency.Need detect system information on the main carrier frequency in the terminal of working on the assistant carrier frequency.When being terminal configuration dedicated channel or shared channel, RNC comprises two frequencies to the configuration information that terminal sends, and one is the dominant frequency point, is used to detect common signal channel and carries out measurement of correlation, another is a working frequency points, is used for the frequency configuration of dedicated channel and shared channel.Dedicated channel and shared channel must be positioned on the same frequency.
Fig. 2 is the ios dhcp sample configuration IOS DHCP of current multi-carrier frequency cell.Referring to shown in Figure 2, in network coverage, comprise common sub-district and Hot Spot, utilize the sub-district of " A " sign to represent Hot Spot among Fig. 2, not having the sub-district of " A " sign is common sub-district.According to systems organization, the initial stage can be multi-carrier frequency cell 1.1 of certain coverage configuration, and the frequency that use this sub-district is frequency 1, frequency 2, frequency 3, frequency 4, frequency 5.Simultaneously, assigned frequency 4 is the main carrier frequency of this sub-district, disposes common signal channel thereon.When the system business amount rises, original dedicated channel and common signal channel capacity all can't be met consumers' demand, and this moment is for setting another multi-carrier frequency cell 1.2 in this zone, sub-district 1.2 frequencies of utilization 8 and frequency 9, and network assigned frequency 8 is the main carrier frequency of sub-district 1.2.
Angle from radio network controller, sub-district 1.2 is two different sub-districts with sub-district 1.1, identify with cell ID 1.2 and 1.1 respectively, resident terminal can only be used the assistant carrier frequency on the sub-district 1.1 on the frequency 4 of sub-district 1.1, and the assistant carrier frequency of sub-district 1.2 can only be used in sub-district resident on the frequency 5 of sub-district 1.2.
In other words, can only use a main carrier frequency for a multi-carrier frequency cell, and main carrier frequency and the corresponding relation of corresponding assistant carrier frequency for fixing.Therefore because in overloading sub-district, all minor carriers all depend on the main carrier frequency of common signal channel carry out synchronously, measurement and system information read.When the main carrier frequency fault, mean that other assistant carrier frequencies also can lose efficacy simultaneously.And, because in multi-carrier frequency cell, assistant carrier frequency and main carrier frequency are many-to-one relation, occur the problem of common channel resources deficiency easily.Often the common channel resources deficiency may be caused such as initiating professional user in: a period of time,,, switching can't be finished because common channel resources blocks if when this moment, user terminal was from Cell-DCH state transition to the Cell-FACH state.
Summary of the invention
In view of this, the object of the present invention is to provide a kind of method of allocating multiple carrier-frequency domain, this method can reduce the dependence to unique common signal channel of a sub-district correspondence, reduces the deficiency of common channel resources.
In order to achieve the above object, the invention provides a kind of method of allocating multiple carrier-frequency domain, this method comprises:
A. radio network controller is several frequencies of cell configuration, wherein, comprises one with last main carrier frequency frequency and an above assistant carrier frequency frequency, common signal channel of configuration on described each main carrier frequency frequency; Corresponding one of each main carrier frequency frequency shows cell ID, the corresponding implicit expression cell ID of each assistant carrier frequency frequency,
B. radio network controller sends to user terminal and shows cell ID; User terminal measurement shows the main carrier frequency frequency of cell ID correspondence;
Radio network controller sends to user terminal, the described main carrier frequency of user terminal measurement with all main carrier frequency signs in this sub-district.
After step b, this method further comprises:
C. assistant carrier frequency of radio network controller is set to main carrier frequency, and disposes common signal channel on this main carrier frequency.
Described step c comprises:
C1, radio network controller are demonstration sub-district ID with implicit expression sub-district ID status modifier, and the ID value of this sub-district is constant;
C2, radio network controller configuration common signal channel, and system information block,
Common signal channel is set up in c3, radio network controller control base station on this new carrier frequency;
C4, radio network controller transmitting system block of information start described new carrier frequency.
The common signal channel of a main carrier frequency of network controller deletion, this main carrier frequency is set to assistant carrier frequency.
Step c carries out after radio network controller is received the order of the new main carrier frequency of configuration that network management server in the system sends, or radio network controller triggers according to the condition that sets in advance.
After step b, further comprise: when user terminal entered the Cell-DCH state, user terminal was with the sign of the main carrier frequency received sign as cell update.
Method of the present invention has following advantage and characteristics:
(1) the present invention is based on shared principle, in multi-carrier frequency cell, be a plurality of frequency configuration common signal channels, thereby reduce the dependence of a plurality of assistant carrier frequency single frequency point common signal channel capacity, reduce the meaningless switching that UE causes because common channel resources is not enough, and effectively improved the availability of wireless service.
(2) the present invention does not change the air interface definition of current multi-carrier frequency cell.
(3) since among the present invention a multifrequency sub-district can comprise some main carrier frequencies, when 1 main carrier frequency fault wherein, can also use other main carrier frequencies, so availability improves.
(4) the present invention has cancelled the restriction that a main carrier frequency can only be arranged in the multifrequency sub-district, can be according to the common channel resources requirement, and the dynamic-configuration main carrier frequency.
(5) among the present invention,, therefore alleviated the collision probability of common channel resources to a certain extent because main carrier frequency and subcarrier frequency are the relations of multi-to-multi.
Description of drawings
Fig. 1 is the subframe structure of TD-SCDMA;
Fig. 2 is the ios dhcp sample configuration IOS DHCP schematic diagram of multi-carrier frequency cell in the prior art;
Fig. 3 concerns schematic diagram for frequency of the present invention;
Fig. 4 is the schematic diagram of the multi-carrier frequency cell of the present invention's configuration;
Fig. 5 is the schematic flow sheet of this cell configuration common signal channel for the present invention.
Embodiment
For making the purpose, technical solutions and advantages of the present invention clearer, the present invention is described in further detail below in conjunction with accompanying drawing.
Method of the present invention is: radio network controller is several frequencies of cell configuration, wherein, comprise one with last main carrier frequency frequency and one with last assistant carrier frequency frequency, and common signal channel of configuration on each main carrier frequency frequency, all assistant carrier frequency frequencies are used for offering the user terminal that resides in this sub-district and carry out dedicated channel and shared channel transfer of data in this sub-district; Radio network controller sends to user terminal by system message with all main carrier frequency signs in this sub-district, the described main carrier frequency of user terminal measurement, when user terminal entered the Cell-DCH state, user terminal was with the sign of the main carrier frequency received sign as cell update.
Owing to comprise some main carrier frequencies and some assistant carrier frequencies in the multi-carrier frequency cell of RNC configuration.In order to be supported in the compatibility of air interface and original scheme, can be incorporated herein the definition of explicit cell ID and implicit expression cell ID.As shown in Figure 3, explicit cell ID is corresponding to main carrier frequency, and the implicit expression cell ID is corresponding to assistant carrier frequency.Show that cell ID sends on the interface aloft,, show that cell ID is visible for UE.The implicit expression cell ID is to use between RNC and the Node B, is sightless for UE, is mainly used in the Radio Resource control between RNC and the Node B.The implicit expression cell ID does not have the function of Radio Resource control between wireless base station and the UE from conceptive, and terminal is just used the implicit expression sub-district by the frequency point information in the dedicated wireless link layoutprocedure.RNC sends to UE with the main carrier frequency sign of working by system information block 3 of the prior art, as user terminal measurement, carry out the sign that reports of cell update.Here, explicit cell ID is equal to the cell ID (Cell-ID) in the system information block 3 (SIB3).The implicit expression cell ID is by the inner sign of using of wireless access network system, and this sign is used to represent certain assistant carrier frequency of sub-district.The implicit expression cell ID does not aloft send on the interface, and just radio network controller (RNC) is used for determining the means of sub-district and carrier frequency.
Fig. 4 is the schematic diagram of multi-carrier frequency cell of the present invention.Referring to shown in Figure 4, in radio network controller, a multi-carrier frequency cell is made up of several frequencies.These frequencies use identical shared channel configuration, use identical training sequence, use identical scrambler.Common signal channel configuration on each frequency can be incomplete same.A multi-carrier frequency cell can dispose a plurality of main carrier frequency frequencies.In Fig. 4 example, configuration frequency 8 and frequency 4 are main carrier frequency, and the cell ID that system information block 3 sends on the frequency 8 is 1.1, and the cell ID that system information block 3 sends on the frequency 4 is 1.2.Can carry out dedicated channel and shared channel transfer of data for all assistant carrier frequencies in the terminal configuration sub-district 1 that resides in frequency 8 or frequency 4.
From the angle of terminal, two different sub-districts are arranged, be respectively frequency 8 (cell ID 1.1) and frequency 4 (cell ID is 1.2), when entering the Cell-DCH state and switch on the assistant carrier frequency, the main carrier frequency of tracking terminal Measurement Network appointment.That is, can not change air interface field and interoperability rule between the network of existing scheme definition and the terminal.
The dynamic-configuration mechanism of main carrier frequency, be mix overloading frequently in according to the demand of common channel traffic amount, radio network controller dynamically changes the method for a carrier frequency from the assistant carrier frequency to the main carrier frequency.
Mix overloading frequently in, it is fully constant that frequency is that main carrier frequency or assistant carrier frequency are not, the working method of a frequency can dynamically be adjusted according to traffic needs.
Along with the variation of traffic carrying capacity and business model, the common channel resources off-capacity that seems gradually.The common channel resources load can be obtained by following method.
(1) this Zone quantitative statistics in the long time period.
(2) up access channel traffic statistics and UpPTS transmission frequency statistics.
(3) common down channel channel flow statistics.
Referring to shown in Figure 5, load when excessive when common channel resources, need to increase main carrier frequency, be that the step of this cell configuration common signal channel is as follows this moment:
Step 501: network management center sends configuration order to radio network controller, thinks a new main carrier frequency of multi-carrier frequency cell configuration.Perhaps the pre-configured frequency point information that can dynamically adjust of network management center is independently triggered by radio network controller, obtains being the new main carrier frequency information of this multi-carrier frequency cell configuration.
Step 502: the ID of the described new main carrier frequency of radio network controller is set to explicit sub-district ID, and sub-district ID value remains unchanged.
Step 503: radio network controller configuration common signal channel and system information block 3 and system information block 11, and need to revise the system information block 11 and the system information block 3 of adjacent area.Here, the step of configuration common signal channel can be passed through NBAP, and order Node B generates common signal channel and gets final product.Dispose two system information blocks and be published to UE by broadcast channel.
Step 504: radio network controller configuration radio node B (Node B), for this new main carrier frequency is set up common signal channel.
Step 505: the base station starts main carrier frequency to the transmitting system block of information of eating dishes without rice or wine.
Certainly, when the common channel resources redundancy is very big, promptly a large amount of common signal channel capacity are not used, at this moment in order to reduce the co-channel interference to adjacent area, radio network controller can temporarily be deleted the common signal channel of certain main carrier frequency, makes that this main carrier frequency Status Change is an assistant carrier frequency.
In a word, the above is preferred embodiment of the present invention only, is not to be used to limit protection scope of the present invention.
Claims (6)
1, a kind of method of allocating multiple carrier-frequency domain is characterized in that: this method comprises:
A. radio network controller is several frequencies of cell configuration, wherein, comprises one with last main carrier frequency frequency and an above assistant carrier frequency frequency, common signal channel of configuration on described each main carrier frequency frequency; Corresponding one of each main carrier frequency frequency shows cell ID, the corresponding implicit expression cell ID of each assistant carrier frequency frequency,
B. radio network controller sends to user terminal and shows cell ID; User terminal measurement shows the main carrier frequency frequency of cell ID correspondence;
Radio network controller sends to user terminal, the described main carrier frequency of user terminal measurement with all main carrier frequency signs in this sub-district.
2, method according to claim 1 is characterized in that, after step b, this method further comprises:
C. assistant carrier frequency of radio network controller is set to main carrier frequency, and disposes common signal channel on this main carrier frequency.
According to the described method of claim 2, it is characterized in that 3, described step c comprises:
C1, radio network controller are demonstration sub-district ID with implicit expression sub-district ID status modifier, and the ID value of this sub-district is constant;
C2, radio network controller configuration common signal channel, and system information block,
Common signal channel is set up in c3, radio network controller control base station on this new carrier frequency;
C4, radio network controller transmitting system block of information start described new carrier frequency.
4, method according to claim 1 and 2 is characterized in that, the common signal channel of a main carrier frequency of network controller deletion, and this main carrier frequency is set to assistant carrier frequency.
5, method according to claim 2 is characterized in that, step c carries out after radio network controller is received the order of the new main carrier frequency of configuration that network management server in the system sends, or radio network controller triggers according to the condition that sets in advance.
6, method according to claim 1 is characterized in that, after step b, further comprises: when user terminal entered the Cell-DCH state, user terminal was with the sign of the main carrier frequency received sign as cell update.
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| Application Number | Priority Date | Filing Date | Title |
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| CNB2005101080540A CN100421497C (en) | 2005-09-29 | 2005-09-29 | Method for allocating multiple carrier-frequency domain |
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| CNB2005101080540A CN100421497C (en) | 2005-09-29 | 2005-09-29 | Method for allocating multiple carrier-frequency domain |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009155859A1 (en) * | 2008-06-24 | 2009-12-30 | 华为技术有限公司 | Sending method, receiving method, sending device and receiving device for signals in multi-carrier system |
| WO2010083771A1 (en) * | 2009-01-23 | 2010-07-29 | 华为技术有限公司 | Management method, apparatus and system for uplink carrier frequency |
| CN101330317B (en) * | 2007-06-18 | 2012-05-23 | 大唐移动通信设备有限公司 | Method for regulating carrier frequency of frequency-dividing system, system, base station and apparatus thereof |
| CN102685776A (en) * | 2011-03-08 | 2012-09-19 | 中兴通讯股份有限公司 | Method for reducing cell load through CoMP technology and cell |
| CN101873667B (en) * | 2009-04-24 | 2013-05-15 | 中国移动通信集团公司 | Method for selecting a main carrier and related equipment |
| CN103220111A (en) * | 2013-04-02 | 2013-07-24 | 京信通信系统（广州）有限公司 | Method and equipment for allocating common channel carrier resources |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6584084B1 (en) * | 1999-03-01 | 2003-06-24 | Nortel Networks Ltd. | Expanded carrier capacity in a mobile communications system |
| US6804214B1 (en) * | 1999-04-19 | 2004-10-12 | Telefonaktiebolaget Lm Ericsson (Publ) | System and method for implementing multiple carriers in cellular networks |
| CN1190089C (en) * | 2001-12-30 | 2005-02-16 | 华为技术有限公司 | Interference reducing method of frequency dirision duplex and time dirision duplex multi carrier adjacent frequency time |
| JP3955485B2 (en) * | 2002-03-08 | 2007-08-08 | ソフトバンクテレコム株式会社 | Mobile station, base station apparatus and mobile communication network |
-
2005
- 2005-09-29 CN CNB2005101080540A patent/CN100421497C/en active Active
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101330317B (en) * | 2007-06-18 | 2012-05-23 | 大唐移动通信设备有限公司 | Method for regulating carrier frequency of frequency-dividing system, system, base station and apparatus thereof |
| WO2009155859A1 (en) * | 2008-06-24 | 2009-12-30 | 华为技术有限公司 | Sending method, receiving method, sending device and receiving device for signals in multi-carrier system |
| WO2010083771A1 (en) * | 2009-01-23 | 2010-07-29 | 华为技术有限公司 | Management method, apparatus and system for uplink carrier frequency |
| US8861457B2 (en) | 2009-01-23 | 2014-10-14 | Huawei Technologies Co., Ltd. | Method, device, and system for managing uplink carrier frequencies |
| US9210704B2 (en) | 2009-01-23 | 2015-12-08 | Huawei Technologies Co., Ltd. | Method, device, and system for managing uplink carrier frequencies |
| US9717081B2 (en) | 2009-01-23 | 2017-07-25 | Huawei Technologies Co., Ltd. | Method, device, and system for managing uplink carrier frequencies |
| CN101873667B (en) * | 2009-04-24 | 2013-05-15 | 中国移动通信集团公司 | Method for selecting a main carrier and related equipment |
| CN102685776A (en) * | 2011-03-08 | 2012-09-19 | 中兴通讯股份有限公司 | Method for reducing cell load through CoMP technology and cell |
| CN102685776B (en) * | 2011-03-08 | 2017-03-15 | 中兴通讯股份有限公司 | The method and device that cell load is reduced by CoMP technology |
| CN103220111A (en) * | 2013-04-02 | 2013-07-24 | 京信通信系统（广州）有限公司 | Method and equipment for allocating common channel carrier resources |
| CN103220111B (en) * | 2013-04-02 | 2016-08-03 | 京信通信系统（广州）有限公司 | A kind of method and apparatus that the carrier resource of common signal channel is allocated |
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| CN100421497C (en) | 2008-09-24 |
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