CN101262633A - Transmission and receiving method for multi-carrier time slot multimedia broadcast and multicast service - Google Patents
Transmission and receiving method for multi-carrier time slot multimedia broadcast and multicast service Download PDFInfo
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- CN101262633A CN101262633A CN 200710087642 CN200710087642A CN101262633A CN 101262633 A CN101262633 A CN 101262633A CN 200710087642 CN200710087642 CN 200710087642 CN 200710087642 A CN200710087642 A CN 200710087642A CN 101262633 A CN101262633 A CN 101262633A
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Abstract
The invention discloses an emission method of MBMS in a TDD system. The emission method comprises the steps of step S102 of respectively distributing service numbers for each MBMS, and respectively distributing area numbers corresponding to the service numbers for cells in overlay areas of the MBMS; step S104 of distributing physical resources occupied by each MBMS according to the plan of the cells; step S106 of utilizing a wireless network controller in the overlay areas to distribute the same MBMS for the cells provided with same area numbers, and causing the cells to use the physical resources distributed in step S104 to carry the MBMS; and step S108 of carrying out physical layer processing to the obtained service data of the MBMS by the cells distributed with the MBMS, and obtaining the data to be emitted. In addition, the invention also discloses a receiving method of the MBMS in the TDD system.
Description
Technical field
The present invention relates to the communications field, and especially, relate to a kind of method that transmits and receives of multi-carrier time slot multimedia broadcast multicast service, it is particularly useful for time division duplex (TimeDivision Duplex, TDD) system.
Background technology
Multimedia broadcast-multicast service (Multimedia Broadcast/Multicast Service, MBMS) be a kind of high speed one way traffic with broadcasting or the transmission of multicast form, it can effectively transmit high-speed multimedia data to a plurality of users simultaneously in a cell range.MBMS utilizes the resource transmission multimedia broadcast signal of mobile communications network, and so only being used in the mobile communications network of having built increases the corresponding business function high-quality multimedia service is provided, thereby avoids overlapping construction.
MBMS requires can both desirable reception to transmit in any position of a sub-district the user.In the TDD wireless communication system, because the data rate of MBMS is than higher, it is more than the code channel number that Primary Common Control Physical Channel (P-CCPCH) takies to be used to transmit the code channel number that the Secondary Common Control Physical Channel (S-CCPCH) of MBMS takies, if time slot power is identical, the solid size road transmitting power of the S-CCPCH of MBMS business can be littler than the solid size road transmitting power of P-CCPCH.So, be broadcast transmission equally, the coverage of the S-CCPCH channel of carrying MBMS business can be little more a lot of than the coverage of P-CCPCH.
Usually, in the TDD system, if in common-frequency network, put the MBMS data transmission of multileaving (PtM) pattern, each sub-district is launched different MBMS data respectively according to traditional mobile communication system, then can produce very serious co-channel interference between the sub-district, cause UE can't correctly receive the MBMS signal.In this case, also can't improve the MBMS signal receiving quality even increased the transmitting power of sub-district.
In addition, in the TDD system, the different MBMS data of each sub-district emission, the business that will produce the minizone is like this switched, because the cell coverage area of mobile communication system is little more a lot of than the overlay area of general radiovision, therefore when subscriber equipment (UE) when being moved, the switching meeting of sub-district is more frequent, switching times between the business also has corresponding increase, thereby can cause the increase or the professional discontinuous or interruption that receives of redundant signals.
In sum, in the TDD system, it is desirable to provide a kind of and can avoid minizone MBMS traffic interference, can provide continuously and the method that transmits and receives of high quality multimedia broadcasting service again, yet this technology at present still is unrealized.
Summary of the invention
Consider the problems referred to above and make the present invention that for this reason, main purpose of the present invention is to provide a kind of method that transmits and receives of multi-carrier time slot multimedia broadcast multicast service.
A kind of launching technique of multi-carrier time slot multimedia broadcast multicast service is provided according to one embodiment of present invention.
This method may further comprise the steps: step S102, be respectively each multimedia broadcast-multicast service distribution service numbering, and the cell allocation that is respectively in the overlay area of each multimedia broadcast-multicast service is numbered corresponding zone number with professional; Step S104, the physical resource that distributes each multimedia broadcast-multicast service to take according to the planning of sub-district; Step S106, the radio network controller in the overlay area are the identical multimedia broadcast-multicast service of cell allocation with same area numbering, and the sub-district uses the physical resource that distributes among the step S104 to come the bearing multimedia broadcast multicast service; And step S108, physical layer process is carried out with the business datum of the multimedia broadcast-multicast service that obtains in the sub-district of having distributed multimedia broadcast-multicast service, obtains data to be launched.
Before step S102, also comprise following processing: the overlay area of determining each multimedia broadcast-multicast service according to the demand of each multimedia broadcast-multicast service.
Wherein, after having determined the overlay area, further add up the relevant information of radio network controller (RNC), Node B (Node B) and one or more sub-districts in the overlay area.Here, relevant information is radio network controller, Node B and one or more sub-district number information separately.
In addition, before the transmitting multimedia broadcast multicast service, radio network controller and sub-district in the business numbering that will in step S102, distribute and the zone number notice overlay area.
In step S104, utilize the time interval resource and the frequency resource allocation physical resource of tdd systems, and the physical resource that is distributed can comprise: gap information, frequency point information.
In addition, synchronous corresponding to maintenance between one or more radio network controllers of the same area numbering in the radio network controller of overlay area.
And in step S108, the multimedia broadcast-multicast service of cell allocation carries out physical layer process according to the mode of tdd systems, and wherein, physical layer process can comprise: professional mapping, data-modulated, spectrum-spreading and scrambling process.
According to another embodiment of the present invention, provide a kind of multi-carrier time slot multimedia broadcast multicast service method of reseptance, be used to receive the multimedia broadcast-multicast service that uses above-mentioned multimedia broadcast-multicast service launching technique to be launched.
This method may further comprise the steps: step S202, respectively each efficient cell is carried out channel estimating, and obtain the channel impulse response of each efficient cell; Step S204 generates the sytem matrix of each efficient cell according to channel impulse response; Step S206 merges the sytem matrix that generates among the step S204, obtains the hybrid system matrix; And step S208, the hybrid system matrix is carried out the initial data that combined monitoring obtains multimedia broadcast-multicast service.
By technique scheme of the present invention, can avoid the data in the multimedia broadcast-multicast service of minizone to disturb, improve the quality of the multimedia broadcast and multicast service data of subscriber equipment reception, can reduce the complexity that multimedia broadcast-multicast service is implemented simultaneously in tdd systems.
Description of drawings
Accompanying drawing described herein is used to provide further understanding of the present invention, constitutes the application's a part, and illustrative examples of the present invention and explanation thereof are used to explain the present invention, do not constitute improper qualification of the present invention.In the accompanying drawings:
Fig. 1 is the launching technique according to multi-carrier time slot MBMS in the tdd systems of the inventive method embodiment one;
Fig. 2 is the process chart according to the concrete application example of the multi-carrier time slot MBMS launching technique in the tdd systems of the inventive method embodiment one;
Fig. 3 is the method for reseptance according to multi-carrier time slot MBMS in the tdd systems of the inventive method embodiment two; And
Fig. 4 is the process chart according to the concrete application example of the multi-carrier time slot MBMS method of reseptance in the tdd systems of the inventive method embodiment two.
Embodiment
To be example with the MBMS of the PtM pattern in the TD-SCDMA communication system below, describe embodiments of the invention in conjunction with the accompanying drawings in detail.Wherein, in the TD-SCDMA system, a Control Network (CN) is controlled a plurality of RNC, and a RNC controls a plurality of NodeB, and a Node B can comprise a plurality of sub-districts.
Method embodiment one
The launching technique of a kind of multi-carrier time slot MBMS is provided in the present embodiment.
In the present embodiment, preferably, covering demand according to the business of reality, is MBMS distribution service numbering, and the cell allocation zone number that relates to for the MBMS business, and CN, the RNC, the Node B that are correlated with are corresponding with this zone number; Node B is carried out the distribution of time slot, frequency, Code Channel, scrambler and training sequence code concrete resources such as (midamble sign indicating numbers) according to the demand of actual physical resource by RNC.When existing MBMS to be launched professional, CN gives the MBMS business of distributing the corresponding service numbering corresponding to the RNC of same area numbering, RNC then distributes concrete MBMS business tine for the Node B corresponding to the same area numbering, final Node B sends this MBMS business tine into corresponding district, the processing unit of sub-district is mapped the physical resource and the armed MBMS business of configuration, the professional final identical base band data modulation signal that forms of the MBMS that guarantee to have the same area numbering, identical services is numbered.
As shown in Figure 1, launching technique according to MBMS in the tdd systems of present embodiment may further comprise the steps: step S102, be respectively each MBMS distribution service numbering, and the cell allocation that is respectively in the overlay area of each MBMS is numbered corresponding zone number with professional; Step S104, the physical resource that distributes each MBMS to take according to the planning of sub-district; Step S106, the RNC in the overlay area are the identical MBMS of cell allocation with same area numbering, and the sub-district uses the physical resource that distributes among the step S104 to carry MBMS; And step S108, physical layer process is carried out with the business datum of the MBMS that obtains in the sub-district of having distributed MBMS, obtains data to be launched.
Before step S102, also comprise following processing: the overlay area of determining each MBMS according to the demand of each MBMS.
Wherein, after having determined the overlay area, further add up the relevant information of RNC, Node B, Node B and one or more sub-districts in the overlay area.Here, relevant information is RNC, Node B and one or more sub-district number information separately.
In addition, before emission MBMS, RNC and sub-district in the business numbering that will in step S102, distribute and the zone number notice overlay area.
In step S104, utilize the time interval resource and the frequency resource allocation physical resource of tdd systems, and the physical resource that is distributed can comprise: gap information, frequency point information.
In addition, in the method, suppose in the RNC of overlay area corresponding to keeping synchronously between one or more RNC of the same area numbering.
And in step S108, the MBMS of cell allocation carries out physical layer process according to the mode of tdd systems, and wherein, physical layer process can comprise: professional mapping, data-modulated, spectrum-spreading and scrambling process.
Below with reference to the processing procedure of Fig. 2 detailed description according to the concrete application example of this method of the embodiment of the invention.As shown in Figure 2, specifically may further comprise the steps:
In step 202, dispose C according to the plot planning of each TD-SCDMA network
iThe S in zone
iThe sub-district physical resource that individual MBMS business takies, these physical resources comprise identical gap information Ts
I1..., Ts
Ik, the frequency point information f that this MBMS business takies is launched in each sub-district
I1..., f
Il(corresponding to above-mentioned steps S104);
In step 203, suppose C
iRNC in the zone
1..., RNC
nBetween keep synchronously armed MBMS business datum being passed through RNC
1..., RNC
nBe assigned to each sub-district Cell
M1..., Cell
Mn, each sub-district is according to the physical resource information Ts that obtains in the step 202
I1..., Ts
IkAnd f
I1..., f
IlCarrying MBMS business datum (corresponding to above-mentioned steps S106);
In step 204, the MBMS business datum that each sub-district will obtain in step 203 is carried out physical layer process, finally obtain data to be launched, the scrambler of each sub-district and basic training sequences the equipping rules (corresponding to above-mentioned steps S108) that uses when obeying the networking of TD-SCDMA system same frequency is set.
Method embodiment two
In the present embodiment, provide a kind of multi-carrier time slot MBMS method of reseptance, be used to receive the MBMS that the MBMS launching technique of using a last embodiment is launched.
As shown in Figure 3, may further comprise the steps according to the multi-carrier time slot MBMS method of reseptance of present embodiment: step S302, respectively each efficient cell is carried out channel estimating, obtain the channel impulse response of each efficient cell; Step S304 generates the sytem matrix of each efficient cell according to channel impulse response; Step S306 merges the sytem matrix that generates among the step S304, obtains the hybrid system matrix; And step S308, the hybrid system matrix is carried out the initial data that combined monitoring obtains MBMS.
Below with reference to the processing procedure of Fig. 4 detailed description according to the concrete application example of this method of the embodiment of the invention.As shown in Figure 4, specifically may further comprise the steps:
In sum,, can avoid the data among the MBMS of minizone to disturb, improve the quality of the MBMS data of subscriber equipment reception, can reduce the complexity that MBMS implements simultaneously in tdd systems by means of technical scheme of the present invention.
The above is the preferred embodiments of the present invention only, is not limited to the present invention, and for a person skilled in the art, the present invention can have various changes and variation.Within the spirit and principles in the present invention all, any modification of being done, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. the launching technique of a multi-carrier time slot multimedia broadcast multicast service is characterized in that, comprising:
Step S102 is respectively each multimedia broadcast-multicast service distribution service numbering, and is respectively cell allocation and the described professional corresponding zone number of numbering in the overlay area of each multimedia broadcast-multicast service;
Step S104, the physical resource that distributes described each multimedia broadcast-multicast service to take according to the planning of described sub-district;
Step S106, radio network controller in the described overlay area is the identical multimedia broadcast-multicast service of cell allocation with same area numbering, and described sub-district uses the described physical resource that distributes among the step S104 to carry described multimedia broadcast-multicast service; And
Step S108 has distributed the business datum of the described multimedia broadcast-multicast service that the sub-district of described multimedia broadcast-multicast service will obtain to carry out physical layer process, obtains data to be launched.
2. multimedia broadcast-multicast service launching technique according to claim 1 is characterized in that, before described step S102, also comprises following processing:
Determine the overlay area of described each multimedia broadcast-multicast service according to the demand of described each multimedia broadcast-multicast service.
3. multimedia broadcast-multicast service launching technique according to claim 2, it is characterized in that, after having determined described overlay area, further add up the relevant information of radio network controller, Node B and described one or more sub-districts in the described overlay area.
4. multimedia broadcast-multicast service launching technique according to claim 3 is characterized in that, described relevant information is described radio network controller, described Node B and described one or more sub-district number information separately.
5. multimedia broadcast-multicast service launching technique according to claim 1, it is characterized in that, before the described multimedia broadcast-multicast service of emission, the described professional numbering that will distribute in described step S102 and described zone number are notified radio network controller and the sub-district in the described overlay area.
6. multimedia broadcast-multicast service launching technique according to claim 1 is characterized in that, in described step S104, utilizes the time interval resource and the described physical resource of frequency resource allocation of described tdd systems.
7. multimedia broadcast-multicast service launching technique according to claim 1 is characterized in that, in described step S104, the described physical resource of distribution comprises: gap information, frequency point information.
8. multimedia broadcast-multicast service launching technique according to claim 1 is characterized in that, and is synchronous corresponding to maintenance between one or more radio network controllers of the same area numbering in the radio network controller of described overlay area.
9. multimedia broadcast-multicast service launching technique according to claim 1, it is characterized in that, the described multimedia broadcast-multicast service of described cell allocation carries out described physical layer process according to the mode of described tdd systems, wherein, described physical layer process comprises: professional mapping, data-modulated, spectrum-spreading and scrambling process.
10. a multi-carrier time slot multimedia broadcast multicast service method of reseptance is used for receiving the multimedia broadcast-multicast service that use is launched according to each described multimedia broadcast-multicast service launching technique of claim 1 to 9, it is characterized in that, comprising:
Step S202 carries out channel estimating to each efficient cell respectively, obtains the channel impulse response of described each efficient cell;
Step S204 is according to the sytem matrix of described each efficient cell of described channel impulse response generation;
Step S206 merges the described sytem matrix that generates among the step S204, obtains the hybrid system matrix; And
Step S208 carries out the initial data that combined monitoring obtains multimedia broadcast-multicast service to described hybrid system matrix.
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Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
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WO2010118577A1 (en) * | 2009-04-16 | 2010-10-21 | 深圳华为通信技术有限公司 | A mobility management method, device and system for multimedia broadcast multicast service |
CN101677273B (en) * | 2008-09-18 | 2012-01-25 | 中兴通讯股份有限公司 | Resource distribution method of multimedia broadcast and multicast service and radio network controller |
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KR100860581B1 (en) * | 2002-05-18 | 2008-09-26 | 엘지전자 주식회사 | Method for transmitting multicast data |
CN100542080C (en) * | 2003-09-29 | 2009-09-16 | 富士通株式会社 | Associated detecting method and device and use the system of this device |
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Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
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CN101677273B (en) * | 2008-09-18 | 2012-01-25 | 中兴通讯股份有限公司 | Resource distribution method of multimedia broadcast and multicast service and radio network controller |
WO2010118577A1 (en) * | 2009-04-16 | 2010-10-21 | 深圳华为通信技术有限公司 | A mobility management method, device and system for multimedia broadcast multicast service |
CN102396290A (en) * | 2009-04-16 | 2012-03-28 | 华为技术有限公司 | A mobility management method, device and system for multimedia broadcast multicast service |
CN102396290B (en) * | 2009-04-16 | 2014-01-01 | 华为技术有限公司 | A mobility management method, device and system for multimedia broadcast multicast service |
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