CN101064904A - Method for transmitting broadcasting multicasting service and system thereof - Google Patents
Method for transmitting broadcasting multicasting service and system thereof Download PDFInfo
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- CN101064904A CN101064904A CNA2006100781196A CN200610078119A CN101064904A CN 101064904 A CN101064904 A CN 101064904A CN A2006100781196 A CNA2006100781196 A CN A2006100781196A CN 200610078119 A CN200610078119 A CN 200610078119A CN 101064904 A CN101064904 A CN 101064904A
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Abstract
The invention discloses a transmission method for broadcast multicast service that includes it determines the occupied frequency source of broadcast multicast section transmitting the service data of broadcast multicast service based on several sections transmission mode in the honeycomb section with frequency reusing; chooses the corresponding frequency source which has the same frequency of determined frequency source in the broadcast section adjacent with multicast sections; said single-cast section based on the chosen frequency source and the broadcast multi-cast section based on the determined frequency source transmit the broadcast multicast service synchronously. The invention also discloses transmission system of broadcast multicast service. The invention can improves the receiving property in the transition zone between the single-cast sections and the broadcast multi-cast sections.
Description
Technical field
The present invention relates to channeling technology and broadcast group broadcast technology in the mobile communications network, especially relate to a kind of transmission method and system thereof of broadcasting multicast service.
Background technology
In order effectively to utilize limited frequency spectrum resources, present mobile communication technology proposes the recycling in the enterprising line frequency resource of the diverse geographic location of cellular network.As shown in Figure 1, for carry out the multiplexing view of channeling in the mobile communications network between the different cellular cells based on the multiplexing factor 1, it for the multiplexing factor 1 cellular mobile communication networks, all adopt identical frequency resource between each sub-district, and the user who is in cell edge can be subjected to the interference from user in other adjacent cell, and the signal interference ratio that therefore is in its acquisition of user of cell edge can be more weaker.
In order to solve based on the multiplexing factor is 1 when carrying out channeling, the problem that the Cell Edge User signal interference ratio is relatively poor, the way that can adopt is the multiplexing factor numerical value when increasing the channeling processing, as shown in Figure 2, for carry out the multiplexing view of channeling in the mobile communications network between the different cellular cells based on the multiplexing factor 3, cellular cell for rule, carry out the channeling processing based on the multiplexing factor 3 between the adjacent sub-district of different honeycombs and can guarantee that the frequency of using between any two neighbor cells is all different, can only use 1/3 original frequency resource but its drawback is each sub-district.
Big more in order to solve the multiplexing factor, the problem that the cell frequency utilance is low more, industry have been introduced the notion of interference coordination.The interference coordination technique that wherein is applied between different districts generally manages at downlink resource, usually between the sub-district, increase constraints (as to the structure of conventional channel and the processing such as scheduling of non-conventional channel) with coordination mode, these constraintss that increased normally limit the available time domain and/or the frequency domain resource of explorer, or the through-put power on certain time-domain and frequency-domain resource is limited.
At present, soft-frequency reuse (SFR, Soft Frequency Reuse) is exactly the application allusion quotation example of interference coordination technique, as shown in Figure 3, for carry out the multiplexing view of channeling in the mobile communications network between the different cellular cells based on the SFR mode, as shown in Figure 3 for disturbing more serious cell edge area to adopt the multiplexing factor respectively,, be 1 frequency multiplexing mode so adopt the multiplexing factor simultaneously because less in each sub-district internal interference greater than 1 frequency multiplexing mode.Here being that example illustrates to adopt the multiplexing factor 3 specifically, is that 3 pairs of whole usable frequencies are divided according to the multiplexing factor at first, makes each sub-district obtain the dominant frequency of using from the edge zone separately (dominant frequency specifically sees also the texture part among Fig. 3); For each sub-district, the frequency except that dominant frequency is as secondary (the secondary dash area that frequently specifically sees also among Fig. 3) frequently of each sub-district.As seen from the figure, as corresponding secondary frequency, other in like manner in sub-district 2 for the dominant frequency in the sub-district 1; In each sub-district, need the available horsepower on the pair frequency be limited usually, even the available horsepower on the secondary frequency is lower than the available horsepower on the dominant frequency.
At present, the multimedia broadcast-multicast service (MBMS, MultimediaBroadcast Multicast Service) that is proposed by the 3GPP standard is supported two kinds of cell transmission modes:
A kind of is many cell transmission (Multi-cell transmission) modes, refers to the mode of a plurality of sub-districts same frequency sending simultaneously MBMS business;
Another kind is single cell transmission (Single-cell transmission) mode, refers to that single subdistrict sends the MBMS business and do not consider that other sub-districts send the mode of situations.
When adopting many cell transmission mode MBMS transmission professional, each broadcast multi-broadcasting sub-district that participates in transmission takies special-purpose frequency resource and is used for the MBMS transmission business, and the frequency resource that is taken by the MBMS business can not be used further to the transmission of other business.Each broadcast multi-broadcasting sub-district directly takies part dominant frequency and the secondary MBMS transmission business that frequently is used for of self under the SFR multiplex mode, the frequency resource that is taken by the MBMS business can not be used further to the unicast service of respective cell, that is to say that each broadcast multi-broadcasting sub-district can not be again be made of this part frequency resource secondaryly uses frequently, and the respective cell of originally this part frequency being made dominant frequency can not be done dominant frequency to this part frequency resource again and uses simultaneously.Specifically as shown in Figure 4, for carrying out channeling based on the SFR mode between the different cellular cells in the mobile communications network, and between the different cellular cells based on many cell transmission mode MBMS transmission the frequency seizure condition schematic diagram when professional, as shown in the figure, when a part of frequency resource in the whole frequency is used for the MBMS transmission business, the frequency range part that is occupied by the MBMS business in the neighbor cell can not have been served for the user of cell edge again, the neighbor cell that promptly has will lose the dominant frequency part of self, will lose the dominant frequency part of self as sub-district 2,4 and 6.
When the area group of forming based on each broadcast multi-broadcasting sub-district of many cell transmission mode MBMS transmission business is adjacent with the clean culture sub-district, when if the clean culture sub-district sends the unicast data of high power transmission correspondence on the frequency of MBMS business in the broadcast multi-broadcasting sub-district, the user in the transition location receives the interference that MBMS that the broadcast multi-broadcasting sub-district sends will certainly be subjected to unicast data traffic when professional between broadcast multi-broadcasting sub-district and clean culture sub-district so.As shown in Figure 5, be the view of broadcast multi-broadcasting sub-district when adjacent with the clean culture sub-district, wherein the sub-district 1,2,5,6,7 are respectively the broadcast multi-broadcasting sub-district, sub-district 3,4 is respectively the clean culture sub-district, and the receptivity that is positioned at the user C reception MBMS business of zone of transition so will certainly be poorer than user A and B.
For fear of the clean culture sub-district the unicast data of edge zone high power transmission correspondence to the zone of transition adjacent with the broadcast multi-broadcasting sub-district in the user receive the MBMS business and cause interference, the prior art scheme proposes dominant frequency transmitting power with the clean culture sub-district and makes into to take place frequently with pair and penetrate power identical (the right blank parts frequency range is former as shown in Figure 5 is the dominant frequency of corresponding clean culture sub-district, its transmitting power changed into pair take place frequently that to penetrate power identical), it is clean culture sub-district 3,4 is identical with the secondary transmitting power that adopts on frequently in the central area in the transmitting power that adopts on the dominant frequency of edge zone, causes interference thereby avoid that user in the zone of transition adjacent with the broadcast multi-broadcasting sub-district is received the MBMS business.
Adopt above-mentioned processing mode, cause interference although can avoid clean culture sub-district high power transmission unicast data that user in the zone of transition adjacent with the broadcast multi-broadcasting sub-district is received the MBMS business, if but the bandwidth ratio broad that the MBMS business takies, might cause some clean culture sub-district in the frequency range that the MBMS business takies, not have dominant frequency to take, thereby can make that the throughput in these clean culture cell edge areas is lower than other clean culture sub-districts, as in Fig. 5, clean culture sub-district 4 impacts user C reception MBMS business for reducing, it is identical with the transmitting power of secondary frequency to need transmitting power with self whole dominant frequency to change to, and the throughput of its edge zone will certainly be less than the throughput of 3 edge zones, clean culture sub-district for clean culture sub-district 4 like this.For addressing this problem, can adopt interframe frequency hopping mode to be alleviated, even the frequency of MBMS transmission business takies the dominant frequency of different clean cultures sub-district, thereby it is identical or close to make that the MBMS business takies the probability of different clean cultures sub-district dominant frequency.
As fully visible, when carrying out channeling based on the SFR mode between the different cellular cells, change to by dominant frequency transmitting power and to take place frequently with the pair of central area that to penetrate power identical clean culture cell edge area, can reduce and user in the zone of transition adjacent with the broadcast multi-broadcasting sub-district is received the MBMS business cause interference, but this processing mode can not improve the received power that the interior user of zone of transition receives the MBMS business, as shown in Figure 5, because user A and B can receive the MBMS business that adjacent a plurality of sub-district sends simultaneously, therefore has higher received power, and user C can only receive the MBMS business that sub-district 1 sends, but do not receive the MBMS business that other neighbor cells send, so its power that receives the MBMS business is lower than the power of user A and B reception MBMS business.
Summary of the invention
The present invention proposes a kind of transmission method and system thereof of broadcasting multicast service, receives the lower problem of broadcasting multicast service power with user in clean culture sub-district and the broadcast multi-broadcasting minizone zone of transition in the solution prior art.
For addressing the above problem, the technical scheme that the present invention proposes is as follows:
A kind of transmission method of broadcasting multicast service comprises step:
In the cellular cell that adopts channeling, determine the shared frequency resource of broadcast multi-broadcasting cell transmission broadcast and multicast service data based on many cell transmission mode;
In the frequency range identical that the clean culture sub-district adjacent with the broadcast multi-broadcasting sub-district takies, select corresponding frequency resource with determined frequency resource;
Described clean culture sub-district based on the frequency resource of selecting and broadcast multi-broadcasting sub-district based on definite frequency resource synchronous transmission broadcast and multicast service data.
Preferably, determine the shared frequency resource of described broadcast multi-broadcasting cell transmission broadcast and multicast service data by high level; And
The frequency resource information of determining is notified to described broadcast multi-broadcasting sub-district.
Preferably, the process of described selection respective frequencies resource specifically comprises:
High level obtains the frequency allocation information of clean culture sub-district under the channeling state; And
Select corresponding frequency resource in the frequency range identical that takies in the clean culture sub-district according to the frequency allocation information of clean culture sub-district with determined frequency resource;
High-rise frequency resource information with selection is notified to the clean culture sub-district.
Preferably, the process of described selection respective frequencies resource specifically also comprises:
The frequency resource that dynamic adjustment has been selected in the high-rise frequency range identical with determined frequency resource that takies in the clean culture sub-district; And
Adjusted frequency resource information is notified to the clean culture sub-district.
Preferably, the process of described selection respective frequencies resource specifically comprises:
High level is notified to the clean culture sub-district with the shared frequency resource information of determining of broadcast multi-broadcasting cell transmission broadcast and multicast service data;
Corresponding frequency resource is selected according to from the frequency allocation information under the channeling state in described clean culture sub-district in the frequency range identical with determined frequency resource that takies at self.
Preferably, the process of described selection respective frequencies resource specifically also comprises:
The frequency resource that dynamic adjustment has been selected in the frequency range identical with determined frequency resource that the clean culture sub-district takies at self.
Preferably, described channeling is the channeling based on interference coordination.
Preferably, be chosen as the frequency resource of clean culture cell edge region user service; And/or be chosen as the frequency resource of clean culture center of housing estate zone user service.
Preferably, described clean culture cell transmission broadcast and multicast service data is limited by the through-put power control under the interference coordination channeling state.
Preferably, described channeling is the soft-frequency reuse based on interference coordination.
Preferably, selection is as the frequency resource of clean culture sub-district dominant frequency; And/or select as the secondary frequency resource frequently in clean culture sub-district.
Preferably, described clean culture cell transmission broadcast and multicast service data is limited by the through-put power control under the soft-frequency reuse state.
A kind of transmission system of broadcasting multicast service comprises:
The frequency determining unit is used for determining the shared frequency resource of broadcast multi-broadcasting cell transmission broadcast and multicast service data based on many cell transmission mode at the cellular cell that adopts channeling;
The frequency selected cell, the frequency range identical with the determined frequency resource of frequency determining unit that is used for taking in the clean culture sub-district adjacent with the broadcast multi-broadcasting sub-district selected corresponding frequency resource;
The business data transmission unit is used for the frequency resource synchronous transmission broadcast and multicast service data that the clean culture sub-district is determined based on the frequency determining unit based on the frequency resource and the broadcast multi-broadcasting sub-district of the selection of frequency selected cell.
Preferably, described frequency selected cell specifically comprises:
Subelement is obtained in frequency allocation, is used to obtain clean culture sub-district the frequency allocation information under channeling state adjacent with the broadcast multi-broadcasting sub-district;
Frequency chooser unit is used for obtaining according to frequency allocation the frequency allocation information of the clean culture sub-district that subelement obtains, and selects corresponding frequency resource in the frequency range identical with the determined frequency resource of frequency determining unit that takies in the clean culture sub-district.
Preferably, described frequency selected cell specifically also comprises selects frequency to adjust subelement, the frequency range identical with the determined frequency resource of frequency determining unit that is used for taking in the clean culture sub-district selected frequency resource in chooser unit of dynamically adjusting frequency.
Preferably, described frequency selected cell is chosen as the frequency resource of clean culture cell edge region user service; And/or be chosen as the frequency resource of clean culture center of housing estate zone user service.
Preferably, described system also comprises the first through-put power control unit, is used for based on the through-put power under the interference coordination channeling state business data transmission unit being carried out power control in the process of clean culture sub-district transmission broadcast and multicast service data.
Preferably, described frequency selected cell is selected the frequency resource as clean culture sub-district dominant frequency; And/or select as the secondary frequency resource frequently in clean culture sub-district.
Preferably, described system also comprises the second through-put power control unit, is used for based on the through-put power under the soft-frequency reuse state business data transmission unit being carried out power control in the process of clean culture sub-district transmission broadcast and multicast service data.
A kind of transmission method of broadcasting multicast service comprises step:
In the cellular cell that adopts channeling, determine the shared frequency resource of broadcast multi-broadcasting cell transmission broadcast and multicast service data based on many cell transmission mode;
In the transmission broadcast and multicast service data, the transmission of any business datum is not carried out in the clean culture sub-district adjacent with the broadcast multi-broadcasting sub-district in the frequency range identical with determined frequency resource that takies on the frequency resource of determining in described broadcast multi-broadcasting sub-district.
Preferably, determine the shared frequency resource of described broadcast multi-broadcasting cell transmission broadcast and multicast service data by high level; And
The frequency resource information of determining is notified to described broadcast multi-broadcasting sub-district and adjacent clean culture sub-district respectively.
A kind of transmission system of broadcasting multicast service comprises:
The frequency determining unit is used for determining the shared frequency resource of broadcast multi-broadcasting cell transmission broadcast and multicast service data based on many cell transmission mode at the cellular cell that adopts channeling;
The broadcast and multicast service data transmission unit is used in the broadcast multi-broadcasting sub-district based on the determined frequency resource transmission of frequency determining unit broadcast and multicast service data;
The transfer of data screen unit, be used for the broadcast and multicast service data transmission unit in broadcast multi-broadcasting sub-district transmission broadcast and multicast service data, in the clean culture sub-district adjacent with the broadcast multi-broadcasting sub-district, the transmission of any business datum is carried out in shielding in the frequency range identical with the determined frequency resource of frequency determining unit.
The beneficial effect that the present invention can reach is as follows:
Technical solution of the present invention is considered in the cellular cell communication environment of channeling, when the unicast service amount of clean culture sub-district is fewer, may exist and be broadcasted the frequency resource that multicast cell transmission broadcasting multicast service takies and to adopt less than probability, propose by in the clean culture sub-district adjacent with the broadcast multi-broadcasting sub-district, use is broadcasted the frequency range that frequency resource that multicast cell transmission broadcast and multicast service data takies covers and comes and broadcast multi-broadcasting sub-district synchronous transmission broadcast and multicast service data, so just can improve the user who is in the zone of transition between broadcast multi-broadcasting sub-district and the adjacent clean culture sub-district and receive the received power of broadcasting multicast service, and then improve the receptivity that user in the zone of transition receives broadcasting multicast service.
Simultaneously technical solution of the present invention considers that also the user receives the lower problem of broadcast and multicast service data power in the zone of transition between broadcast multi-broadcasting sub-district and adjacent clean culture sub-district, may be owing to the clean culture sub-district sends excessive the causing of interference that unicast data causes user in the zone of transition, and propose in broadcast multi-broadcasting cell transmission broadcast and multicast service data, any business datum (comprising unicast data and broadcast and multicast service data) hour can not transmitted in the unicast service amount in the clean culture sub-district in being broadcasted the frequency range that frequency resource that multi-cast business data takies covers, thereby reduce user in the zone of transition is received the interference that broadcast and multicast service data causes, the user receives the received power of broadcast and multicast service data in the covert raising zone of transition, therefore improves the receptivity that the interior user of zone of transition receives broadcast and multicast service data.
Description of drawings
Fig. 1 is for carrying out the multiplexing view of channeling based on the multiplexing factor 1 between the different cellular cells in the mobile communications network;
Fig. 2 is for carrying out the multiplexing view of channeling based on the multiplexing factor 3 between the different cellular cells in the mobile communications network;
Fig. 3 is for carrying out the multiplexing view of channeling based on the SFR mode between the different cellular cells in the mobile communications network;
Fig. 4 is for carrying out channeling based on the SFR mode between the different cellular cells in the mobile communications network, and between the different cellular cell based on many cell transmission mode MBMS transmission the frequency seizure condition schematic diagram when professional;
Fig. 5 is the view of broadcast multi-broadcasting sub-district when adjacent with the clean culture sub-district;
Fig. 6 is the main realization principle flow chart of broadcast multicast service transmission method of the present invention;
Fig. 7 is for finishing the processing procedure schematic diagram of broadcasting multicast service transmission in the methods of the invention based on first kind of frequency resource selection mode;
Fig. 8 is for finishing the processing procedure schematic diagram of broadcasting multicast service transmission in the methods of the invention based on second kind of frequency resource selection mode;
Fig. 9 is for being used for the dominant frequency resource that is taken by the MBMS business datum in the clean culture sub-district frequency resource distribution schematic diagram of transferring MBMS service data in the methods of the invention;
Figure 10 is for being used for the secondary resource frequently that is taken by the MBMS business datum in the clean culture sub-district frequency resource distribution schematic diagram of transferring MBMS service data in the methods of the invention;
Figure 11 is for being used for the dominant frequency that taken by the MBMS business datum in the clean culture sub-district, secondary resource frequently the frequency resource distribution schematic diagram of transferring MBMS service data in the methods of the invention;
Figure 12 is the modulation and demodulation system processing procedure schematic diagram of basic ofdm system;
Figure 13 uses the dominant frequency that is taken by the MBMS business datum for clean culture sub-district in the embodiment of the invention and comes the frequency resource distribution schematic diagram of transferring MBMS service data;
Figure 14 is for carrying out the concrete input data mode schematic diagram before IFFT handles in ofdm system according to the above embodiment of the present invention;
Figure 15 is the main composition structured flowchart of first kind of broadcasting multicast service transmission system of the present invention's proposition;
Figure 16 is the concrete composition structured flowchart of system of the present invention medium frequency selected cell;
Figure 17 is the main realization principle flow chart of the transmission method of the another kind of broadcasting multicast service of the present invention's proposition;
Figure 18 is not for carrying out the frequency resource distribution schematic diagram of any transfer of data on the frequency resource that is taken by the MBMS business datum in the methods of the invention in the clean culture sub-district;
Figure 19 is the main composition structured flowchart of second kind of broadcasting multicast service transmission system of the present invention's proposition.
Embodiment
Technical solution of the present invention is between the different cellular cells during based on channeling, be in the lower problem of received power that the user in the zone of transition between the broadcast multi-broadcasting sub-district of adopting many cell transmission mode MBMS transmission business and the adjacent clean culture sub-district receives the MBMS business, consider simultaneously when the unicast service amount is fewer in the clean culture sub-district, may exist and be broadcasted the frequency resource that multicast cell transmission MBMS business takies and to adopt less than probability, proposition can multicast cell transmission MBMS business takies with being broadcasted in the clean culture sub-district, the frequency resource that may not can be used by the clean culture business is used for and broadcast multi-broadcasting sub-district synchronous transmission MBMS business datum, thereby promptly avoided the waste of frequency resource, can improve again that the user receives the received power of MBMS business in the zone of transition between broadcast multi-broadcasting sub-district and the adjacent clean culture sub-district, and then improve the receptivity that user in the zone of transition receives the MBMS business.
Be explained in detail to the main realization principle of technical solution of the present invention, embodiment and to the beneficial effect that should be able to reach below in conjunction with each accompanying drawing.
As shown in Figure 6, be the main realization principle flow chart of broadcast multicast service transmission method of the present invention, it realizes that mainly principle is as follows:
Step S10 in the cellular cell of channeling, determines the shared frequency resource of broadcast multi-broadcasting cell transmission broadcast and multicast service data based on many cell transmission mode (Multi-celltransmission); Wherein can come definite shared frequency resource of broadcast multi-broadcasting cell transmission broadcast and multicast service data, and the frequency resource information of deciding is notified to corresponding broadcast multi-broadcasting sub-district by the high level (as access gateway AG W) of network side based on Multi-cell transmission mode.
Step S20 selects corresponding frequency resource in the frequency range identical with above-mentioned definite frequency resource that takies in the clean culture sub-district adjacent with the broadcast multi-broadcasting sub-district;
Step S30, the clean culture sub-district adjacent with the broadcast multi-broadcasting sub-district based on the above-mentioned frequency resource of selecting and broadcast multi-broadcasting sub-district based on above-mentioned definite frequency resource synchronous transmission broadcast and multicast service data.
Like this based on the main realization thought of the inventive method, under existing interference coordination technique, the clean culture sub-district adjacent with the broadcast multi-broadcasting sub-district is used to regulate all or part of frequency range that user in the zone of transition receives the broadcasting multicast service performance what it was broadcasted that multi-cast business data occupies, to continue to send broadcast and multicast service data, receive the receptivity of broadcasting multicast service with user in the raising zone of transition; Certainly these resources of frequency range that are broadcasted that multi-cast business data occupies just can not be that unicast user in the clean culture sub-district served simultaneously again in the clean culture sub-district.
Wherein in the methods of the invention, can carry out channeling based on interference coordination technique between the different cellular cells, carry out channeling processing etc. as preferably adopting the SFR mode.
Wherein in above-mentioned steps S20, select the process of corresponding frequency resource in the identical frequency range of the frequency resource that takies in the clean culture sub-district adjacent and can finish by two kinds of methods with determining with the broadcast multi-broadcasting sub-district:
First kind: the high-rise frequency allocation information of clean culture sub-district under the channeling state of at first obtaining;
And select corresponding frequency resource in the frequency range identical that takies in the clean culture sub-district according to the frequency allocation information of clean culture sub-district with determined frequency resource;
High level is notified to the clean culture sub-district with selected frequency resource information; The dynamic frequency resource selected of adjustment in the frequency range identical that follow-up high level can also take in the clean culture sub-district according to the concrete change information of clean culture sub-district with determined frequency resource, and adjusted frequency resource information is notified to the clean culture sub-district once more.
Second kind: high level is notified to the clean culture sub-district adjacent with the broadcast multi-broadcasting sub-district with the shared frequency resource information of deciding of broadcast multi-broadcasting cell transmission broadcast and multicast service data;
Corresponding frequency resource is selected according to from the frequency allocation information under the channeling state in the clean culture sub-district in the frequency range identical with determined frequency resource that takies at self; The frequency resource that dynamic adjustment has been selected in the frequency range identical with determined frequency resource that follow-up clean culture sub-district can also take at self at any time according to the concrete change information of self.
Be treated to the concrete selection course that example illustrates frequency resource to adopt the SFR mode to carry out channeling between the cellular cell below.As shown in Figure 7, for finish the processing procedure schematic diagram of broadcasting multicast service transmission in the methods of the invention based on first kind of frequency resource selection mode, its concrete processing procedure is as follows:
1, sends instructions under high-rise (as AGW) and inform that the broadcast multi-broadcasting sub-district sends broadcast and multicast service data on which time resource and frequency resource;
2, high-rise (as AGW) issues instruction query clean culture sub-district the major-minor under SFR multiplexing state adjacent with the broadcast multi-broadcasting sub-district section assignment information and the current intensity of traffic information in clean culture sub-district again and again;
3, the current unicast service amount of clean culture sub-district statistics self, and drawing corresponding business busy extent information according to statistics, section assignment information and self current intensity of traffic feedback information are given high-rise (AGW) again and again based on the major-minor under the multiplexing state of SFR with self in the clean culture sub-district;
4, high-rise (AGW) is according to the major-minor frequent section assignment information and the current intensity of traffic information of clean culture sub-district feedback, select corresponding frequency resource in the frequency range identical that takies in the clean culture sub-district with broadcast and multicast service data acquisition frequency resource, and selection and informing to the identical time resource of the time resource of broadcast multi-broadcasting sub-district; Send instructions down then and inform that the clean culture sub-district sends broadcast and multicast service data on frequency resource of selecting and time resource;
5, the synchronized transmission broadcast and multicast service data is come according to frequency resource and the time resource that high-rise (AGW) informs respectively in broadcast multi-broadcasting sub-district and clean culture sub-district.
If cause intensity of traffic information to change owing to the unicast service amount in the clean culture sub-district changes in addition, it is high-rise when the intensity of traffic information of in time learning the clean culture sub-district changes, dynamically adjust selected frequency resource in the frequency range of also wanting to take in the clean culture sub-district accordingly identical with broadcast and multicast service data acquisition frequency resource, and the frequency resource information of adjusted selection in time is notified to the clean culture sub-district, when increasing as the unicast service amount in the clean culture sub-district, the frequency resource that may need to select is reduced, when the unicast service amount in the clean culture sub-district reduces for another example, may need the frequency resource increase that to select etc.
As shown in Figure 8, for finish the processing procedure schematic diagram of broadcasting multicast service transmission in the methods of the invention based on second kind of frequency resource selection mode, its concrete processing procedure is as follows:
10, send instructions under high-rise (as AGW) and inform that the broadcast multi-broadcasting sub-district sends broadcast and multicast service data on which time resource and frequency resource;
20, simultaneously high-rise (as AGW) also sends instructions down and informs that the clean culture Cell Broadcast CB multicast sub-district adjacent with the broadcast multi-broadcasting sub-district will send broadcast and multicast service data on which time resource and frequency resource;
Clean culture sub-district basis is from the frequent section of the major-minor under the multiplexing state of SFR assignment information, with self current unicast service amount is added up the intensity of traffic information that correspondence draws, select corresponding frequency resource in the frequency range identical that takies at self with broadcast and multicast service data acquisition frequency resource;
30, the broadcast multi-broadcasting sub-district sends broadcast and multicast service data according to frequency resource and the time resource that high-rise (AGW) informs, the time resource that inform according to frequency resource of self selecting and high level (AGW) the clean culture sub-district that is adjacent simultaneously sends broadcast and multicast service data.
Accordingly, if the current intensity of traffic information of clean culture sub-district discovery self changes, dynamically adjust the frequency resource of selection in the frequency range identical that the intensity of traffic information after also needing in time to change according to self takies at self with broadcast and multicast service data acquisition frequency resource.
Wherein more excellent in above-mentioned steps S20, if adopt frequency multiplexing mode based on interference coordination to carry out channeling when handling between the cellular cell, be chosen as the frequency resource of clean culture cell edge region user service in the identical frequency range of the frequency resource that takies with broadcast and multicast service data that can take in the clean culture sub-district adjacent with the broadcast multi-broadcasting sub-district, also can be chosen as the frequency resource of clean culture center of housing estate zone user service, can also be chosen as the frequency resource of clean culture cell edge region user service simultaneously and be the frequency resource of clean culture center of housing estate zone user's service.
Be example to carry out channeling based on the SFR mode between the cellular cell below, specify the various situations of selecting frequency resource in the identical frequency range of the frequency resource that occupies with broadcast and multicast service data that takies in the clean culture sub-district.Select frequency resource in the identical frequency range of the frequency resource that takies with broadcast and multicast service data that more preferably can take, so that the clean culture sub-district is come and broadcast multi-broadcasting sub-district synchronous transmission broadcast and multicast service data based on the dominant frequency resource of selecting as clean culture sub-district dominant frequency in the clean culture sub-district adjacent with the broadcast multi-broadcasting sub-district.As shown in Figure 9, for in the methods of the invention the dominant frequency resource that is taken by the MBMS business datum in the clean culture sub-district being used for the frequency resource distribution schematic diagram of transferring MBMS service data, suppose the Cell 3 among Fig. 9,4 are respectively the clean culture sub-district, Cell 1,2,5,6,7 are respectively the broadcast multi-broadcasting sub-district based on many cell transmission mode transferring MBMS service data, wherein the transmission of MBMS business datum has occupied the secondary resource frequently of part of Cell 1, and has occupied part pair frequency resource and the part dominant frequency resource of Cell 3, has also occupied the secondary resource frequently of part and the whole dominant frequency resource of Cell 4; Suppose user A, B and C lay respectively in the broadcast multi-broadcasting sub-district, and user D is arranged in clean culture sub-district Cell 4, and be typical, the zone of transition of user C between broadcast multi-broadcasting sub-district and adjacent clean culture sub-district.In the prior art when the clean culture sub-district based on when the consistent dominant frequency of frequency resource that broadcast multi-broadcasting cell transmission MBMS business datum takies sends unicast data, the user C that is positioned at zone of transition will be subjected to adjacent clean culture sub-district 3 when receiving the MBMS business datum, the interference of 4 unicast traffic, user in zone of transition is subjected to the interference of unicast service when receiving the MBMS business datum, and improve the received power that user in the zone of transition receives the MBMS business datum simultaneously, can be based on the present invention program in clean culture sub-district 3, in 4 based on primary band that is taken by the MBMS business data transmission and the same MBMS business datum of broadcast multi-broadcasting sub-district synchronized transmission, be that clean culture sub-district 3 and 4 uses black and white lattice in self acquisition frequency resource to represent that frequency partly comes transferring MBMS service data respectively, also can use a part of frequency in the frequency part that the black and white lattice represent to come transferring MBMS service data respectively.
Select as the secondary frequency resource frequently in clean culture sub-district in the identical frequency range of the frequency resource that takies with broadcast and multicast service data that can certainly take, so that the clean culture sub-district is come and broadcast multi-broadcasting sub-district synchronous transmission broadcast and multicast service data based on the secondary resource of selecting frequently in the clean culture sub-district adjacent with the broadcast multi-broadcasting sub-district.Specifically as shown in figure 10, in the methods of the invention the secondary resource frequently that is taken by the MBMS business datum in the clean culture sub-district being used for the frequency resource distribution schematic diagram of transferring MBMS service data.
Can also select frequency resource respectively as clean culture sub-district dominant frequency and secondary frequency, so that the clean culture sub-district is come and broadcast multi-broadcasting sub-district synchronous transmission broadcast and multicast service data based on the major-minor frequency resource of selecting, specifically as shown in figure 11, in the methods of the invention the dominant frequency that taken by the MBMS business datum in the clean culture sub-district, secondary resource frequently being used for the frequency resource distribution schematic diagram of transferring MBMS service data.
Wherein when clean culture sub-district and broadcast multi-broadcasting sub-district synchronous transmission broadcast and multicast service data, clean culture cell transmission broadcast and multicast service data also will be limited by the through-put power control under the interference coordination channeling state, as is limited by the through-put power control under the multiplexing state of SFR.
Enumerate the specific implementation process that a specific embodiment specifies the inventive method below:
Present embodiment is an example with above-mentioned communication environment shown in Figure 9, Cell 1,2,5,6 and 7 is respectively the broadcast multi-broadcasting sub-district, Cell 3 and 4 is respectively the clean culture sub-district, supposing between these 7 sub-districts to carry out based on the multiplexing factor based on communications bandwidth 10MHz is 3 SFR multiplexing process, make the transmission bandwidth of 10MHz be divided into 12 subbands, each subband comprises 30 subcarriers, and a TTI is 0.5 millisecond.12 * 30 subcarriers are divided into 3 groups, and each cell selecting one group of subcarrier wherein is as boss's carrier wave of this sub-district, and promptly as the dominant frequency of this sub-district, other two groups of subcarriers that do not select are as the auxiliary son carrier waves of this sub-district, i.e. frequently secondary as this sub-district.
The embodiment here is meant at OFDM (OFDM, Orthogonal Frequency DivisionMultiplex) transmission of realization MBMS business datum on the mobile communication system, as shown in figure 12, modulation and demodulation system processing procedure schematic diagram for basic ofdm system, in ofdm system, user data at first passes through chnnel coding and interleaving treatment, adopt certain modulation system (as adopting BPSK then, modulation system such as QPSK and QAM) data after the code interleaving processing is modulated to form user data symbol, user data symbol is again through being modulated on the radio frequency after the OFDM operation, wherein reverse rectification processing procedure and this process contrary are no longer too much given unnecessary details here.
Wherein above-mentioned in the middle of the OFDM operation, at first user data symbol to be carried out serial/parallel conversion, to form the sub data flow of a plurality of low rates, wherein each sub data flow takies a subcarrier, and the processing that each sub data flow is mapped on the corresponding subcarrier can be by reverse discrete Fourier transform (DFT) (IDFT, InverseDiscrete Fourier Transformation) or reverse fast fourier transform (IFFT, Inverse FastFourier Transformation) handle and to realize.Then by adding Cyclic Prefix (CP; Cyclic Prefix) time-domain signal that is treated to after IDFT or IFFT handle increases Cyclic Prefix (CP); with at interval as protection; can significantly reduce even eliminate intersymbol interference like this; and guaranteed the orthogonality of each interchannel, thereby significantly reduced the interference of interchannel.
The embodiment here supposes that the dominant frequency that broadcast multi-broadcasting sub-district 1 takies is 0～3.3MHz, the dominant frequency that clean culture sub-district 3 takies is 3.4MHz～6.7MHz, the dominant frequency that clean culture sub-district 4 takies is 6.8MHz～10MHz, the resource of frequency range that high-rise notification broadcast multicast sub-district takies between 4MHz～10MHz is come transferring MBMS service data (1,2, ... 5,6).And the high-rise frequency range for clean culture sub-district 3 and the 4 transmission MBMS business datums of distributing of hypothesis is transmitted whole dominant frequency of the frequency range covering that the MBMS business datum takies for it, clean culture sub-district 3 will be on the frequency range of 4MHz～6.7MHz and broadcast multi-broadcasting sub-district synchronized transmission MBMS business datum so, and clean culture sub-district 4 will be on the frequency range of 6.8MHz～10MHz and broadcast multi-broadcasting sub-district synchronized transmission MBMS business datum, and its concrete frequency resource distribution as shown in figure 13.
Specifically as shown in figure 14, for in ofdm system, carry out the concrete input data mode schematic diagram before IFFT handles according to the above embodiment of the present invention, wherein the transmission bandwidth that takies 4MHz～10MHz in broadcast multi-broadcasting sub-district 1 (MBMS Cell 1) is imported MBMS business datum (1,2, ... 5,6); And the transmission bandwidth that takies 4MHz～6.7MHz in clean culture sub-district 3 (Unicast Cell 3) is imported MBMS business datum (5,6); The transmission bandwidth that takies 6.8MHz～10MHz in clean culture sub-district 4 (Unicast Cell 4) is imported MBMS business datum (1,2,3,4).
This shows, pass through in the clean culture sub-district adjacent in the said method that the present invention proposes with the broadcast multi-broadcasting sub-district, use is broadcasted the frequency range that frequency resource that multicast cell transmission broadcast and multicast service data takies covers and comes and broadcast multi-broadcasting sub-district synchronous transmission broadcast and multicast service data, so just can improve the user who is in the zone of transition between broadcast multi-broadcasting sub-district and the clean culture sub-district and receive the received power of broadcasting multicast service, and then improve the receptivity that user in the zone of transition receives broadcasting multicast service.
Broadcast multicast service transmission method corresponding to the above-mentioned proposition of the present invention, the present invention has also proposed a kind of transmission system of broadcasting multicast service here, please refer to Figure 15, this figure is the main composition structured flowchart of first kind of broadcasting multicast service transmission system proposing of the present invention, it mainly comprises frequency determining unit 10, frequency selected cell 20 and business data transmission unit 30, and wherein the concrete effect of each component units is as follows:
Frequency selected cell 20, the frequency range identical with said frequencies determining unit 10 determined frequency resources that is used for taking in the clean culture sub-district adjacent with the broadcast multi-broadcasting sub-district selected corresponding frequency resource;
Business data transmission unit 30, the frequency resource that is used for determining based on said frequencies determining unit 10 in the frequency resource selected based on said frequencies selected cell 20 the clean culture sub-district and broadcast multi-broadcasting sub-district is come the synchronous transmission broadcast and multicast service data.
As shown in figure 16, concrete composition structured flowchart for system of the present invention medium frequency selected cell, it comprises that specifically frequency allocation obtains subelement 210, frequency chooser unit 220 and select frequency to adjust subelement 230, and wherein the concrete effect of each component units is as follows:
Select frequency to adjust subelement 230, be used for the follow-up frequency range identical that take in the clean culture sub-district frequency resource that chooser unit 220 selected of dynamically adjusting frequency with frequency determining unit 10 determined frequency resources.
Wherein in system of the present invention, if the frequency multiplexing mode between the different cellular cells is during based on the frequency multiplexing mode of interference coordination, be chosen as the frequency resource of clean culture cell edge region user service in the frequency range identical that its frequency selected cell 20 can take in the clean culture sub-district adjacent with the broadcast multi-broadcasting sub-district with frequency determining unit 10 determined frequency resources, also can be chosen as the frequency resource of clean culture center of housing estate zone user service, can also be chosen as the frequency resource of clean culture cell edge region user service simultaneously and be the frequency resource of clean culture center of housing estate zone user's service.Like this in system of the present invention, can also and then comprise one first through-put power control unit on the main composition architecture basics of above-mentioned Figure 15, be used for business data transmission unit 30 being carried out power control in the process of clean culture sub-district transmission broadcast and multicast service data based on the through-put power under the interference coordination channeling state.
When adopting the SFR mode to carry out the channeling processing between for example different cellular cells, frequency selected cell 20 can be selected the frequency resource as clean culture sub-district dominant frequency, also can select as the secondary frequency resource frequently in clean culture sub-district, can also select as the frequency resource of clean culture sub-district dominant frequency with as the secondary frequency resource frequently in clean culture sub-district.Like this in system of the present invention, can also and then comprise one second through-put power control unit on the main composition architecture basics of above-mentioned Figure 15, be used for business data transmission unit 30 being carried out power control in the process of clean culture sub-district transmission broadcast and multicast service data based on the through-put power under the multiplexing state of SFR.
Wherein the concrete technology of other in the transmission system of broadcasting multicast service of the present invention realizes that details please be corresponding to the description of the correlation technique details in the said method of the present invention, no longer gives too much to give unnecessary details here.
Technical solution of the present invention considers that also the user receives the lower problem of broadcast and multicast service data power in the zone of transition between broadcast multi-broadcasting sub-district and adjacent clean culture sub-district, might be owing to the clean culture sub-district sends excessive the causing of interference that unicast data causes user in the zone of transition, any business datum (comprising unicast data and broadcast and multicast service data) hour can not transmitted in the unicast service amount in the clean culture sub-district in being broadcasted the frequency range that frequency resource that multicast cell transmission broadcast and multicast service data takies covers in fact, thereby reduce user in the zone of transition is received the interference that broadcast and multicast service data causes, covert improve the received power that user in the zone of transition receives broadcast and multicast service data, improve the receptivity that user in the zone of transition receives broadcast and multicast service data with this.
Based on above-mentioned thought, the present invention has also proposed the transmission method of another kind of broadcasting multicast service here, please refer to Figure 17, and this figure is the main realization principle flow chart of the transmission method of the another kind of broadcasting multicast service that proposes of the present invention, and its main implementation procedure is as follows:
Step S100 in the cellular cell that adopts channeling (as the channeling based on interference coordination, typical in SFR), determines the shared frequency resource of broadcast multi-broadcasting cell transmission broadcast and multicast service data based on many cell transmission mode;
Wherein can determine the shared frequency resource of broadcast multi-broadcasting cell transmission broadcast and multicast service data, and the frequency resource information of deciding is notified to broadcast multi-broadcasting sub-district and adjacent clean culture sub-district respectively by high-rise (as AGW);
Step S200, broadcast and multicast service data is transmitted in the broadcast multi-broadcasting sub-district on above-mentioned definite frequency resource, the transmission (comprising unicast data and broadcast and multicast service data) of any business datum is not carried out in meanwhile adjacent with broadcast multi-broadcasting sub-district clean culture sub-district in the frequency range identical with above-mentioned definite frequency resource that takies, thereby reduce user in the zone of transition is received the interference that broadcast and multicast service data causes, and then improve the receptivity that the interior user of zone of transition receives broadcast and multicast service data.
The transmission method of second of above-mentioned proposition kind of broadcasting multicast service according to the present invention, please refer to Figure 18, this figure is the frequency resource distribution schematic diagram that does not carry out any transfer of data in the clean culture sub-district on the frequency resource that is taken by the MBMS business datum in the methods of the invention, this shows in clean culture sub-district 3 and 4, the transmission of any business datum be will not carry out in the identical frequency range of the frequency resource that occupies with broadcast multi-broadcasting cell transmission MBMS business datum that takies at it, the transmission of not carrying out unicast data and the transmission of not carrying out the MBMS business datum etc. comprised.
Another kind of broadcast multicast service transmission method corresponding to the above-mentioned proposition of the present invention, the proposition that the present invention is corresponding here the transmission system of second kind of broadcasting multicast service, please refer to Figure 19, this figure is the main composition structured flowchart of second kind of broadcasting multicast service transmission system proposing of the present invention, it mainly comprises frequency determining unit 100, broadcast and multicast service data transmission unit 200 and transfer of data screen unit 300, and wherein the concrete effect of each component units is as follows:
Broadcast and multicast service data transmission unit 200 is used for transmitting broadcast and multicast service data in the broadcast multi-broadcasting sub-district based on said frequencies determining unit 100 determined frequency resources;
Transfer of data screen unit 300, be used for broadcast and multicast service data transmission unit 200 in broadcast multi-broadcasting sub-district transmission broadcast and multicast service data, in the clean culture sub-district adjacent with the broadcast multi-broadcasting sub-district, the transmission (comprising unicast data and broadcast and multicast service data) of any business datum is carried out in shielding in the frequency range identical with said frequencies determining unit 100 determined frequency resources, reducing that user in the zone of transition is received the interference that broadcast and multicast service data is caused, and then improve the receptivity that user in the zone of transition receives broadcast and multicast service data.
Obviously, those skilled in the art can carry out various changes and modification to the present invention and not break away from the spirit and scope of the present invention.Like this, if of the present invention these are revised and modification belongs within the scope of claim of the present invention and equivalent technologies thereof, then the present invention also is intended to comprise these changes and modification interior.
Claims (22)
1, a kind of transmission method of broadcasting multicast service is characterized in that, comprises step:
In the cellular cell that adopts channeling, determine the shared frequency resource of broadcast multi-broadcasting cell transmission broadcast and multicast service data based on many cell transmission mode;
In the frequency range identical that the clean culture sub-district adjacent with the broadcast multi-broadcasting sub-district takies, select corresponding frequency resource with determined frequency resource;
Described clean culture sub-district based on the frequency resource of selecting and broadcast multi-broadcasting sub-district based on definite frequency resource synchronous transmission broadcast and multicast service data.
2, the method for claim 1 is characterized in that, determines the shared frequency resource of described broadcast multi-broadcasting cell transmission broadcast and multicast service data by high level; And
The frequency resource information of determining is notified to described broadcast multi-broadcasting sub-district.
3, method as claimed in claim 2 is characterized in that, the process of described selection respective frequencies resource specifically comprises:
High level obtains the frequency allocation information of clean culture sub-district under the channeling state; And
Select corresponding frequency resource in the frequency range identical that takies in the clean culture sub-district according to the frequency allocation information of clean culture sub-district with determined frequency resource;
High-rise frequency resource information with selection is notified to the clean culture sub-district.
4, method as claimed in claim 3 is characterized in that, the process of described selection respective frequencies resource specifically also comprises:
The frequency resource that dynamic adjustment has been selected in the high-rise frequency range identical with determined frequency resource that takies in the clean culture sub-district; And
Adjusted frequency resource information is notified to the clean culture sub-district.
5, method as claimed in claim 2 is characterized in that, the process of described selection respective frequencies resource specifically comprises:
High level is notified to the clean culture sub-district with the shared frequency resource information of determining of broadcast multi-broadcasting cell transmission broadcast and multicast service data;
Corresponding frequency resource is selected according to from the frequency allocation information under the channeling state in described clean culture sub-district in the frequency range identical with determined frequency resource that takies at self.
6, method as claimed in claim 5 is characterized in that, the process of described selection respective frequencies resource specifically also comprises:
The frequency resource that dynamic adjustment has been selected in the frequency range identical with determined frequency resource that the clean culture sub-district takies at self.
As the described method of 1～6 arbitrary claim, it is characterized in that 7, described channeling is the channeling based on interference coordination.
8, method as claimed in claim 7 is characterized in that, is chosen as the frequency resource of clean culture cell edge region user service; And/or
Be chosen as the frequency resource of clean culture center of housing estate zone user's service.
9, method as claimed in claim 7 is characterized in that, described clean culture cell transmission broadcast and multicast service data is limited by the through-put power control under the interference coordination channeling state.
As the described method of 1～6 arbitrary claim, it is characterized in that 10, described channeling is the soft-frequency reuse based on interference coordination.
11, method as claimed in claim 10 is characterized in that, selects the frequency resource as clean culture sub-district dominant frequency; And/or
Selection is as the secondary frequency resource frequently in clean culture sub-district.
12, method as claimed in claim 10 is characterized in that, described clean culture cell transmission broadcast and multicast service data is limited by the through-put power control under the soft-frequency reuse state.
13, a kind of transmission system of broadcasting multicast service is characterized in that, comprising:
The frequency determining unit is used for determining the shared frequency resource of broadcast multi-broadcasting cell transmission broadcast and multicast service data based on many cell transmission mode at the cellular cell that adopts channeling;
The frequency selected cell, the frequency range identical with the determined frequency resource of frequency determining unit that is used for taking in the clean culture sub-district adjacent with the broadcast multi-broadcasting sub-district selected corresponding frequency resource;
The business data transmission unit is used for the frequency resource synchronous transmission broadcast and multicast service data that the clean culture sub-district is determined based on the frequency determining unit based on the frequency resource and the broadcast multi-broadcasting sub-district of the selection of frequency selected cell.
14, system as claimed in claim 13 is characterized in that, described frequency selected cell specifically comprises:
Subelement is obtained in frequency allocation, is used to obtain clean culture sub-district the frequency allocation information under channeling state adjacent with the broadcast multi-broadcasting sub-district;
Frequency chooser unit is used for obtaining according to frequency allocation the frequency allocation information of the clean culture sub-district that subelement obtains, and selects corresponding frequency resource in the frequency range identical with the determined frequency resource of frequency determining unit that takies in the clean culture sub-district.
15, system as claimed in claim 14, it is characterized in that, described frequency selected cell specifically also comprises selects frequency to adjust subelement, the frequency range identical with the determined frequency resource of frequency determining unit that is used for taking in the clean culture sub-district selected frequency resource in chooser unit of dynamically adjusting frequency.
As claim 13,14 or 15 described systems, it is characterized in that 16, described frequency selected cell is chosen as the frequency resource of clean culture cell edge region user service; And/or
Be chosen as the frequency resource of clean culture center of housing estate zone user's service.
17, system as claimed in claim 16, it is characterized in that, also comprise the first through-put power control unit, be used for the business data transmission unit being carried out power control in the process of clean culture sub-district transmission broadcast and multicast service data based on the through-put power under the interference coordination channeling state.
As claim 13,14 or 15 described systems, it is characterized in that 18, described frequency selected cell is selected the frequency resource as clean culture sub-district dominant frequency; And/or
Selection is as the secondary frequency resource frequently in clean culture sub-district.
19, system as claimed in claim 18, it is characterized in that, also comprise the second through-put power control unit, be used for the business data transmission unit being carried out power control in the process of clean culture sub-district transmission broadcast and multicast service data based on the through-put power under the soft-frequency reuse state.
20, a kind of transmission method of broadcasting multicast service is characterized in that, comprises step:
In the cellular cell that adopts channeling, determine the shared frequency resource of broadcast multi-broadcasting cell transmission broadcast and multicast service data based on many cell transmission mode;
In the transmission broadcast and multicast service data, the transmission of any business datum is not carried out in the clean culture sub-district adjacent with the broadcast multi-broadcasting sub-district in the frequency range identical with determined frequency resource that takies on the frequency resource of determining in described broadcast multi-broadcasting sub-district.
21, method as claimed in claim 20 is characterized in that, determines the shared frequency resource of described broadcast multi-broadcasting cell transmission broadcast and multicast service data by high level; And
The frequency resource information of determining is notified to described broadcast multi-broadcasting sub-district and adjacent clean culture sub-district respectively.
22, a kind of transmission system of broadcasting multicast service is characterized in that, comprising:
The frequency determining unit is used for determining the shared frequency resource of broadcast multi-broadcasting cell transmission broadcast and multicast service data based on many cell transmission mode at the cellular cell that adopts channeling;
The broadcast and multicast service data transmission unit is used in the broadcast multi-broadcasting sub-district based on the determined frequency resource transmission of frequency determining unit broadcast and multicast service data;
The transfer of data screen unit, be used for the broadcast and multicast service data transmission unit in broadcast multi-broadcasting sub-district transmission broadcast and multicast service data, in the clean culture sub-district adjacent with the broadcast multi-broadcasting sub-district, the transmission of any business datum is carried out in shielding in the frequency range identical with the determined frequency resource of frequency determining unit.
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| CN2006100781196A CN101064904B (en) | 2006-04-26 | 2006-04-26 | Method for transmitting broadcasting multicasting service and system thereof |
| PCT/CN2007/001382 WO2007131419A1 (en) | 2006-04-26 | 2007-04-25 | A method and system for transmitting broadcast multicast service |
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| CN2006100781196A CN101064904B (en) | 2006-04-26 | 2006-04-26 | Method for transmitting broadcasting multicasting service and system thereof |
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| WO2009121300A1 (en) * | 2008-04-01 | 2009-10-08 | 大唐移动通信设备有限公司 | A method and apparatus for transmitting multimedia broadcast and multicast service control data |
| CN101466071B (en) * | 2007-12-17 | 2010-11-10 | 华为技术有限公司 | Method and apparatus for distributing time frequency resource |
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| CN101902690A (en) * | 2009-05-27 | 2010-12-01 | 上海贝尔股份有限公司 | Method and equipment for integrating unicast service and broadcast and multicast service |
| CN101971650A (en) * | 2008-04-01 | 2011-02-09 | 日本电气株式会社 | Wireless communication system, base station, wireless communication method, and program |
| CN102239717A (en) * | 2008-10-28 | 2011-11-09 | 新加坡科技研究局 | A method of optimising bandwidth allocation in a wireless communication network |
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| KR100965659B1 (en) * | 2004-09-14 | 2010-06-25 | 삼성전자주식회사 | Method for indicating cell selection when session stop in mbms system and system thereof |
| CN100568996C (en) * | 2006-03-28 | 2009-12-09 | 华为技术有限公司 | Wireless cellular network and Mid Frequency distribution method thereof |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN101064904B (en) | 2012-04-04 |
| WO2007131419A1 (en) | 2007-11-22 |
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