CN101296400B - Method and device for selecting optimized frequency layer of multimedia broadcast/multicast service - Google Patents
Method and device for selecting optimized frequency layer of multimedia broadcast/multicast service Download PDFInfo
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- CN101296400B CN101296400B CN2007100974441A CN200710097444A CN101296400B CN 101296400 B CN101296400 B CN 101296400B CN 2007100974441 A CN2007100974441 A CN 2007100974441A CN 200710097444 A CN200710097444 A CN 200710097444A CN 101296400 B CN101296400 B CN 101296400B
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Abstract
The invention discloses a method for selecting the optimal frequency layer of a multimedia broadcasting and multicast service, and a device thereof, wherein, the method comprises the following steps that: step S102, as for each frequency layer, total resource consumption for activating all user equipment in a CELL_DCH state of the multimedia broadcasting and multicast service are calculated; step S104, the total resource consumption of all frequency layers are compared; and step S106, according to comparison results, the frequency layer with the maximum total resource consumption is used as the optimal frequency layer. Therefore, the method of the invention reduces the shock to the existing system to the maximum extent while using a frequency layer converging technology to save radio resources, thus being beneficial for the stabilization of the system.
Description
Technical field
The present invention relates to the communications field, more specifically, relate to a kind of multimedia broadcast/group broadcast service optimized frequency method for layer selecting and device.
Background technology
For example, in WCDMA (WCDMA) GSM, (Multimedia Broadcast/Multicast Service MBMS) is a kind of shared network resource transmits data to a plurality of targets from a data source technology to multimedia broadcast/group broadcast service.In traditional mobile network, (Cell Broadcast Service CBS) allows low bit rate data to share broadcast channel through the sub-district and sends to all users cell broadcaste service, and it belongs to information series business.
In R99, have only short message service (SMS) cell broadcaste service to use CBS.In order to effectively utilize mobile network resource; 3GPP (Third Generation PartnershipProject) has proposed multimedia broadcast/group broadcast service (MBMS) in R6; In the mobile network, provide a data source to send the point-to-multipoint service of data to a plurality of users; Thereby realize that Internet resources are shared, improve the especially utilance of valuable air interface resource of Internet resources.
MBMS can not only realize the classes of messages multicast and the broadcasting of plain text low rate; And can also realize multicast and the broadcasting that high-speed multimedia is professional; Multiple rich video, audio frequency and multimedia service are provided; This has complied with following mobile data Development Trend undoubtedly, for the development of 3G (Third Generation, third generation mobile) provides better professional prospect.
Fig. 1 is the structural model figure of MBMS operation system.As shown in the figure: broadcast multicast service center (BM-SC) is newly-increased mobile network functional entity, and it is content provider's a inlet, be used for authorizing and initiating the MBMS bearer service at mobile network, and plan transmits the MBMS content to schedule.
Existing WCDMA Packet Based Network functional entity is comprised: gateway GPRS supporting node (GGSN) (General Packet Radio Service Gateway Support Node; GGSN), service universal grouping wireless business supporting node (Serving General PacketRadio Service Support Node; SGSN), wireless access network (Radio Access Net; RAN) and subscriber equipment (User Equipment UE), also need increase MBMS correlation function and process.
MBMS has introduced the frequency layer convergence technology.Because each MBMS can send on a plurality of frequencies simultaneously, and the content on each frequency all is identical, and this just makes the reception user on a plurality of frequencies converged on the frequency becomes possibility.The frequency layer convergence technology has been saved Radio Resource greatly, has improved the availability of frequency spectrum of MBMS.
The applying frequency layer technology of converging introduced the notion of optimized frequency layer (Preferred Layer is hereinafter to be referred as PL) and not preferred frequency layer (Non-Preferred Layer is hereinafter to be referred as NPL).For certain MBMS business,, can only send this business in order to save resource but not optimized frequency layer is not just redispatched at optimized frequency layer.
Activate the professional UE of MBMS and read the MBMS control messages; If find that the frequency layer at place is an optimized frequency layer; Then receive MBMS according to business information and beared information, in addition, if find that the frequency layer at place is not preferred frequency layer; The UE that is in idle pulley, URA_PCH, CELL_PCH, CELL_FACH state passes through district reselecting; Converge to PL, the UE that is in the CELL_DCH state carries out alien frequencies and switches to PL firmly through sending MBMS modify request messages (MBMS Modification Request).
If it is professional that UE has received other non-MBMS; Corresponding district also need be non-MBMS traffic assignments resource after converging to PL; Therefore the assignment affects to the PL local resource can be very big, and is congested if local resource takes place, and also might influence other professional normal reception.
Thereby, be badly in need of a kind of multimedia broadcast/group broadcast service optimized frequency method for layer selecting and device, can after introducing the MBMS business, reduce the influence that each local resource is distributed as far as possible.
Summary of the invention
The present invention provides a kind of multimedia broadcast/group broadcast service optimized frequency method for layer selecting and device, is used to guarantee when MBMS is provided, reduces the influence that each local resource is distributed as far as possible.
One side of the present invention provides a kind of multimedia broadcast/group broadcast service optimized frequency method for layer selecting; Can may further comprise the steps: step S102; To each frequency layer, all of computing activation multimedia broadcast/group broadcast service are in the resource consumption total amount of the subscriber equipment of CELL_DCH state; Step S104, relatively the resource consumption total amount of each frequency layer; And step S106, according to comparative result, select the maximum frequency layer of resource consumption total amount as optimized frequency layer.
According to an aspect of the present invention, step S102 can comprise following processing: to each frequency layer, all that find activating multimedia broadcast/multicast business are in the subscriber equipment of CELL_DCH state; And the resource consumption total amount of calculating the subscriber equipment that is found.
Wherein, resource can be sign indicating number resource, power resource or channel resource.
Another aspect of the present invention provides a kind of multimedia broadcast/group broadcast service optimized frequency layer choice device; It can comprise: computing unit; Be used for to each frequency layer, all of computing activation multimedia broadcast/group broadcast service are in the resource consumption total amount of the subscriber equipment of CELL_DCH state; Comparing unit is used for the resource consumption total amount of each frequency layer of comparison; And selected cell, be used for comparative result according to comparing unit, select the maximum frequency layer of resource consumption total amount as optimized frequency layer.
According to a further aspect in the invention, computing unit can comprise: search module, all that are used to find activating multimedia broadcast/multicast business are in the subscriber equipment of CELL_DCH state.
According to a further aspect in the invention, resource can be sign indicating number resource, power resource or channel resource.
Thereby, adopt method of the present invention and device, in the applying frequency layer Radio Resource that converged techniques save, reduced impact to greatest extent to existing system, help the stability of system.
Other features and advantages of the present invention will be set forth in specification subsequently, and, partly from specification, become obvious, perhaps understand through embodiment of the present invention.The object of the invention can be realized through the structure that in the specification of being write, claims and accompanying drawing, is particularly pointed out and obtained with other advantages.
Description of drawings
Accompanying drawing is used to provide further understanding of the present invention, and constitutes the part of specification, is used to explain the present invention with embodiments of the invention, is not construed as limiting the invention.In the accompanying drawings:
Fig. 1 shows the structural model figure of MBMS operation system;
Fig. 2 shows the flow chart according to multimedia broadcast/group broadcast service optimized frequency method for layer selecting of the present invention;
Fig. 3 shows the block diagram according to multimedia broadcast/group broadcast service optimized frequency layer choice device of the present invention;
Fig. 4 is the allocation plan of the MBMS service area that the present invention relates to; And
Fig. 5 is the flow chart according to the MBMS optimized frequency method for layer selecting of the embodiment of the invention.
Embodiment
Below in conjunction with accompanying drawing the preferred embodiments of the present invention are described, should be appreciated that preferred embodiment described herein only is used for explanation and explains the present invention, and be not used in qualification the present invention.
Fig. 2 shows according to multimedia broadcast/group broadcast service optimized frequency method for layer selecting of the present invention.As shown in Figure 2, multimedia broadcast/group broadcast service optimized frequency method for layer selecting may further comprise the steps:
Step S202, to each frequency layer, all of computing activation multimedia broadcast/group broadcast service are in the resource consumption total amount of the subscriber equipment of CELL_DCH state;
Step S204, relatively the resource consumption total amount of each frequency layer; And
Step S206 according to comparative result, selects the maximum frequency layer of resource consumption total amount as optimized frequency layer.
Wherein, step S202 comprises following processing: to each frequency layer, all that find activating multimedia broadcast/multicast business are in the subscriber equipment of CELL_DCH state; And the resource consumption total amount of calculating the subscriber equipment that is found.
In addition, resource can be sign indicating number resource, power resource or channel resource.
Fig. 3 shows the block diagram according to multimedia broadcast/group broadcast service optimized frequency layer choice device 300 of the present invention.As shown in Figure 3; Multimedia broadcast/group broadcast service optimized frequency layer choice device 300 comprises: computing unit 302; Be used for to each frequency layer, all of computing activation multimedia broadcast/group broadcast service are in the resource consumption total amount of the subscriber equipment of CELL_DCH state; Comparing unit 304 is used for the resource consumption total amount of each frequency layer of comparison; And selected cell 306, be used for comparative result according to comparing unit, select the maximum frequency layer of resource consumption total amount as optimized frequency layer.
Wherein, resource can be sign indicating number resource, power resource or channel resource.
Fig. 4 is the allocation plan of the MBMS service area that the present invention relates to.As shown in Figure 4; Zone 1, zone 2 in the service area of professional A correspondence; Suppose just to be called the same coverage cell of alien frequencies to sub-district 1, sub-district 2 and sub-district 3 by different frequency f1, f2 and f3 region covered overlaid spatially at this, sub-district 4, sub-district 5 and sub-district 6 are called the same coverage cell of alien frequencies.Method of the present invention and device are exactly in the service area of professional A, to confirm optimized frequency layer.
Because the UE that is in different conditions is different for the situation that takies of interface-free resources; The UE that for example is under idle pulley, URA_PCH, the CELL_PCH state does not take interface-free resources; What be in that the UE of CELL_FACH state carries all is interactive class, background business usually; And these two types of business are relatively low to the real-time requirement, and adopt common signal channel to carry, and are mainly reflected in the UE that is under the CELL_DCH state for consumption of resource like this.Therefore, the present invention mainly considers to be in the current shared Radio Resource situation of UE under the CELL_DCH state, assesses the radio resource consumption that each frequency layer need to increase after as PL with this.
Fig. 5 is the flow chart according to the MBMS optimized frequency method for layer selecting of the embodiment of the invention.As shown in Figure 5, comprise the steps:
Step S502, to each layer, all that find out the professional A of current frequency layer activating MBMS are in the UE under the CELL_DCH state;
Step S504, the resource consumption summation of the UE that satisfies condition among the calculation procedure S502; And
Step S506 selects the maximum frequency layer of summation as optimized frequency layer.
In sum, adopt method of the present invention and device, need not increase extra message, simple and practical.
More than be merely the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various changes and variation.All within spirit of the present invention and principle, 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. a multimedia broadcast/group broadcast service optimized frequency method for layer selecting is characterized in that, may further comprise the steps:
Step S102, to each frequency layer, all of the said multimedia broadcast/group broadcast service of computing activation are in the resource consumption total amount of the subscriber equipment of CELL_DCH state;
Step S104, the relatively said resource consumption total amount of each said frequency layer; And
Step S106 according to comparative result, selects the maximum frequency layer of said resource consumption total amount as optimized frequency layer.
2. multimedia broadcast/group broadcast service optimized frequency method for layer selecting according to claim 1 is characterized in that said step S102 comprises following processing:
To each said frequency layer, find all that activate said multimedia broadcast/group broadcast service to be in the subscriber equipment of CELL_DCH state; And
Calculate the resource consumption total amount of the subscriber equipment that is found.
3. multimedia broadcast/group broadcast service optimized frequency method for layer selecting according to claim 1 and 2 is characterized in that, said resource is the sign indicating number resource.
4. multimedia broadcast/group broadcast service optimized frequency method for layer selecting according to claim 1 and 2 is characterized in that said resource is a power resource.
5. multimedia broadcast/group broadcast service optimized frequency method for layer selecting according to claim 1 and 2 is characterized in that said resource is a channel resource.
6. multimedia broadcast/group broadcast service optimized frequency layer choice device is characterized in that said device comprises:
Computing unit is used for to each frequency layer, and all of the said multimedia broadcast/group broadcast service of computing activation are in the resource consumption total amount of the subscriber equipment of CELL_DCH state;
Comparing unit is used for the said resource consumption total amount of each said frequency layer of comparison; And
Selected cell is used for the comparative result according to said comparing unit, selects the maximum said frequency layer of said resource consumption total amount as optimized frequency layer.
7. multimedia broadcast/group broadcast service optimized frequency layer choice device according to claim 6 is characterized in that said computing unit comprises:
Search module, be used to find all that activate said multimedia broadcast/group broadcast service to be in the subscriber equipment of CELL_DCH state.
8. according to claim 6 or 7 described multimedia broadcast/group broadcast service optimized frequency layer choice devices, it is characterized in that said resource is the sign indicating number resource.
9. according to claim 6 or 7 described multimedia broadcast/group broadcast service optimized frequency layer choice devices, it is characterized in that said resource is a power resource.
10. according to claim 6 or 7 described multimedia broadcast/group broadcast service optimized frequency layer choice devices, it is characterized in that said resource is a channel resource.
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| CN2007100974441A CN101296400B (en) | 2007-04-29 | 2007-04-29 | Method and device for selecting optimized frequency layer of multimedia broadcast/multicast service |
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| CN101296400B true CN101296400B (en) | 2012-05-23 |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1753558A (en) * | 2004-09-24 | 2006-03-29 | 华为技术有限公司 | Method of controlling user terminal selection cell in radio communication system |
| CN1832589A (en) * | 2005-03-07 | 2006-09-13 | 华为技术有限公司 | Method for decentralizing frequency level of user equipment in multimedia broadcasting/group broadcasting service |
| CN1939080A (en) * | 2004-04-16 | 2007-03-28 | 诺基亚公司 | Frequency layer convergence method for MBMS |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1939080A (en) * | 2004-04-16 | 2007-03-28 | 诺基亚公司 | Frequency layer convergence method for MBMS |
| CN1753558A (en) * | 2004-09-24 | 2006-03-29 | 华为技术有限公司 | Method of controlling user terminal selection cell in radio communication system |
| CN1832589A (en) * | 2005-03-07 | 2006-09-13 | 华为技术有限公司 | Method for decentralizing frequency level of user equipment in multimedia broadcasting/group broadcasting service |
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