CN101516062B - Resource allocation method for multicast services of multimedia broadcast in nontransparent relay station mode - Google Patents
Resource allocation method for multicast services of multimedia broadcast in nontransparent relay station mode Download PDFInfo
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- CN101516062B CN101516062B CN 200810005286 CN200810005286A CN101516062B CN 101516062 B CN101516062 B CN 101516062B CN 200810005286 CN200810005286 CN 200810005286 CN 200810005286 A CN200810005286 A CN 200810005286A CN 101516062 B CN101516062 B CN 101516062B
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Abstract
The invention discloses a resource allocation method for multicast services of a multimedia broadcast in a nontransparent relay station mode, which aims to realize the transmission of the MBMS services in the nontransparent relay mode. According to the multicast service content of the multimedia broadcast, a plurality of nontransparent relay stations or base stations subordinated to the plurality of the nontransparent relay stations in the covering area of the multicast services of the multimedia broadcast, the method of the invention calculates the time frequency resource for transmitting the multicast services of the multimedia broadcast, and allocates channel resources according to time and subcarrier, so that the plurality of the nontransparent relay stations transmit the same multicast services of the multimedia broadcast at the same time frequency resources. The method of the invention allocates the resources of the multicast services of the multimedia broadcast at the nontransparent PS side, is based on an MBMS service access merging algorithm and ensures that various nontransparent RSs in the same service area transmit the same MBMS services in the specific time frequency resource.
Description
Technical field
The present invention relates to a kind of resource allocation methods of multimedia broadcast-multicast service, relate in particular to the resource allocation methods of multimedia broadcast-multicast service under a kind of nontransparent RS (relay station) pattern.
Background technology
Along with popularizing of portable terminals such as large-screen multi-functional mobile phone, the application of mobile data services more and more widely, to the demand of mobile communication business such as be satisfied with that no longer phone, message and surfing Internet with cell phone are browsed.Because the fast development of Internet (the Internet), a large amount of multimedia services emerge.Various high bandwidth multimedia services, constantly occur as video conference, television broadcasting, video request program, advertisement, online education, interactive game etc., satisfy the business demand that the mobile subscriber constantly rises on the one hand, also bring new business growth point for mobile operator simultaneously.These mobile multi-media services require a plurality of users can receive identical data simultaneously, compare with general data, have characteristics such as data volume is big, longer duration, delay sensitive.
In order to effectively utilize mobile network resource, 3GPP (third generation partner program) has proposed a kind of shared network resource transmits data to a plurality of targets from a data source technology, it is MBMS (multimedia broadcast-multicast service) technology, in the mobile network, provide a data source to send the point-to-multipoint service of data to a plurality of users, the realization Internet resources are shared, and improve the utilance of Internet resources (the especially Bao Gui interface resource of eating dishes without rice or wine).The MBMS of 3GPP definition can not only realize classes of messages multicast and the broadcasting of plain text low rate, and can also realize multicast and the broadcasting of high-speed multimedia business, multiple rich video, audio frequency and multimedia service are provided, this has complied with the trend of following mobile data development undoubtedly, for the development of 3G (3G (Third Generation) Moblie), 4G (the 4th third-generation mobile communication) provides better professional prospect.
RS has two kinds what discuss at present, and a kind of is transparent, and a kind of is nontransparent, wherein:
Transparent RS: under the transparent relay pattern, RS and UT (user terminal) are positioned at MR-BS (multihop relay base station) coverage, and UT is positioned at the coverage of RS again simultaneously.Downlink Control Information and data service are independent transmission, and wherein Downlink Control Information directly is transferred to UT from MR-BS without relaying, and data service can be transferred to UT by RS.RS in the downlink broadcast channel, do not launch oneself synchronously, information such as system configuration and resource distribution.Be in all RS and UT in the same MR-BS residential quarter, all the SCH (synchronizing channel) by MR-BS realize with MR-BS synchronously.Under the transparent relay pattern, UT is unaware of exist (though communication is arranged between them) of RS.Transparent relay RS is mainly used in the throughput of elevator system capacity and unique user, particularly urban area, and it only supports centralized scheduling.
Nontransparent RS: under nontransparent repeater mode, RS is positioned at the MR-BS coverage, and UT is positioned at outside the coverage of MR-BS, but UT is positioned at the coverage of RS.Downlink Control Information and data service all must be transferred to UT by RS.RS in the downlink broadcast channel, launch oneself synchronously, information such as system configuration and resource distribution.Under nontransparent repeater mode, UT can recognize the existence of RS.Nontransparent relaying RS is mainly used in elevator system covering, particularly suburb, and it can support centralized scheduling, also can support distributed scheduling.In a MR-cell (multi-hop residential quarter), transparent RS and nontransparent RS can coexist.
Also be not suitable at present having in the next generation communication system resource allocation methods of the MBMS business that nontransparent RS participates in, therefore being necessary to propose a kind of method solves this problem.
Summary of the invention
Technical problem to be solved by this invention is the resource allocation methods that is to provide MBMS business under a kind of nontransparent RS pattern, finishes the transmission of MBMS business under the nontransparent RS pattern.
In order to solve the problems of the technologies described above, the invention provides the resource allocation methods of multimedia broadcast-multicast service under a kind of nontransparent relay station pattern, according to the multimedia broadcast-multicast service content, some nontransparent relay station in the described multimedia broadcast-multicast service coverage or the base station under described some nontransparent relay stations, calculate the size of the required running time-frequency resource of the described multimedia broadcast-multicast service of transmission, and according to time and subcarrier channel resource is distributed, make described some nontransparent relay stations send identical multimedia broadcast-multicast service at same running time-frequency resource.
In the aforesaid method, described base station can comprise one or more.
In the aforesaid method, professional numbering can be unified for described multimedia broadcast-multicast service in described base station, makes described some nontransparent relay stations send identical multimedia broadcast-multicast service at same running time-frequency resource.
Further, described base station can be compiled same multimedia broadcast-multicast service and is same professional numbering.
In the aforesaid method, described some nontransparent relay stations can be according to described multimedia broadcast-multicast service content, calculate the size of the required running time-frequency resource of the described multimedia broadcast-multicast service of transmission, by the negotiation of described some nontransparent relay stations, be the identical time frequency unit of multimedia broadcast-multicast service distribution of identical services numbering.
In the aforesaid method, described base station can be according to described multimedia broadcast-multicast service content, calculate the required time symbol numbers that takies and subcarrier number, channel resource is distributed, be the identical time frequency unit of multimedia broadcast-multicast service distribution of identical services numbering.
In the aforesaid method, described base station is after the multimedia broadcast-multicast service of described identical services numbering distributes identical time frequency unit, the time frequency unit of distributing can be notified to described some nontransparent relay stations, make described some nontransparent relay stations send described multimedia broadcast-multicast service in the time frequency unit of distributing.
The invention provides the resource allocation methods in a kind of local MBMS service area of being formed by nontransparent RS, carry out the resource of multimedia broadcast-multicast service distributes in nontransparent RS side, based on the MBMS business merge algorithm of eating dishes without rice or wine, guaranteed that each the nontransparent RS in the same service area launches identical MBMS business in specific running time-frequency resource.
Description of drawings
Fig. 1 is the network configuration block diagram of the embodiment of the invention;
Fig. 2 is the schematic flow sheet of the embodiment of the invention;
Fig. 3 is that nontransparent RS resource of the embodiment of the invention is distributed schematic diagram;
Fig. 4 is that a plurality of nontransparent RS resources of the embodiment of the invention are distributed schematic diagram.
Embodiment
Describe embodiments of the present invention in detail below with reference to drawings and Examples, how the application technology means solve technical problem to the present invention whereby, and the implementation procedure of reaching technique effect can fully understand and implements according to this.
Next generation communication system based on OFDM (OFDM) multiple access technology distributes channel resource according to time and subcarrier, make different nontransparent RS send identical MBMS business at same running time-frequency resource, user terminal receives the different copies from the same MBMS business of the nontransparent RS of difference like this, these copies are being eated dishes without rice or wine to merge and balanced, or carry out input at user terminal and handle with merging, obtain original MBMS business datum, thereby can provide the inhibition ability to the interference between nontransparent RS, and improve the user terminal receiving gain, in subrange, the user is provided flexibly effectively, the MBMS business that is rich in individual character.
Fig. 1 is the transmitting terminal of MBMS in the present embodiment and the network configuration block diagram of receiving terminal.After the base station obtains MBMS business data flow that the MBMS service source provides, this MBMS business data flow is sent to n nontransparent RS, this n nontransparent RS obtains identical MBMS business data flow, and the control business is shone upon and modulation system is just the same, this MBMS business datum is carried out the resource distribution then, same MBMS business takies the running time-frequency resource unit that configures, like this, this MBMS business each nontransparent RS emission data be synchronous and content identical.
Fig. 2 is that (resource that the individual nontransparent RS resource allocation flow figure of 1≤m≤n), Fig. 3 and Fig. 4 show respectively under a nontransparent RS and a plurality of nontransparent RS scene is distributed schematic diagram to m in the present embodiment.Each nontransparent RS of the transmitting terminal of present embodiment is synchronous, makes a plurality of nontransparent RS launch identical MBMS business datum d at one time
MBMSIn conjunction with Fig. 3 and Fig. 4, the embodiment of the inventive method comprises the steps:
In this step, transmit the size of the professional required running time-frequency resource that takies of this MBMS, also can be calculated by each nontransparent RS oneself, and by consulting mutually, be implemented in and distribute identical running time-frequency resource to transmit this MBMS business each other.
In sum, the present invention is in the mobile communication system based on the OFDM multiple access technology, for the MBMS operation system of being made up of nontransparent RS among a small circle provides a kind of efficient resource allocation method, this resource allocation methods is the eat dishes without rice or wine basis of merge algorithm of MBMS business, carry out the resource of multimedia broadcast-multicast service distributes in nontransparent RS side, can guarantee that each the nontransparent RS in the same service area launches identical MBMS business in specific running time-frequency resource, realize the high-quality transmission of MBMS business.
Though the disclosed execution mode of the present invention as above, the execution mode that described content just adopts for the ease of understanding the present invention is not in order to limit the present invention.Technical staff in any the technical field of the invention; under the prerequisite that does not break away from the disclosed spirit and scope of the present invention; can do any modification and variation in the details of implementing that reaches in form; but scope of patent protection of the present invention still must be as the criterion with the scope that appending claims was defined.
Claims (7)
1. the resource allocation methods of multimedia broadcast-multicast service under the nontransparent relay station pattern, it is characterized in that, according to the multimedia broadcast-multicast service content, some nontransparent relay station in the described multimedia broadcast-multicast service coverage or the base station under described some nontransparent relay stations, calculate the size of the required running time-frequency resource of the described multimedia broadcast-multicast service of transmission, and according to time and subcarrier channel resource is distributed, make described some nontransparent relay stations send identical multimedia broadcast-multicast service at same running time-frequency resource, this multimedia broadcast-multicast service each nontransparent relay station emission data be synchronous and content identical.
2. the method for claim 1 is characterized in that:
Described base station comprises one or more.
3. the method for claim 1 is characterized in that:
Described base station is that described multimedia broadcast-multicast service is unified professional numbering, makes described some nontransparent relay stations send identical multimedia broadcast-multicast service at same running time-frequency resource.
4. method as claimed in claim 2 is characterized in that:
Described base station is compiled same multimedia broadcast-multicast service and is same professional numbering.
5. the method for claim 1 is characterized in that:
Described some nontransparent relay stations are according to described multimedia broadcast-multicast service content, calculate the size of the required running time-frequency resource of the described multimedia broadcast-multicast service of transmission, by the negotiation of described some nontransparent relay stations, be the identical time frequency unit of multimedia broadcast-multicast service distribution of identical services numbering.
6. the method for claim 1 is characterized in that:
The required time symbol numbers that takies and subcarrier number are calculated according to described multimedia broadcast-multicast service content in described base station, and channel resource is distributed, and are the identical time frequency unit of multimedia broadcast-multicast service distribution of identical services numbering.
7. the method for claim 1 is characterized in that:
Described base station is after the multimedia broadcast-multicast service of identical services numbering distributes identical time frequency unit, the time frequency unit of distributing is notified to described some nontransparent relay stations, makes described some nontransparent relay stations send described multimedia broadcast-multicast service in the time frequency unit of distributing.
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2007061250A1 (en) * | 2005-11-25 | 2007-05-31 | Samsung Electronics Co., Ltd. | Method for enhancing multicast/broadcast service |
| CN101001098A (en) * | 2006-01-12 | 2007-07-18 | 华为技术有限公司 | Method for converting downlink signal from repeater and its equipment |
| CN101009512A (en) * | 2006-01-24 | 2007-08-01 | 华为技术有限公司 | Wireless transfer communication OFDM access system and method |
| CN101043417A (en) * | 2006-03-23 | 2007-09-26 | 华为技术有限公司 | Downlink carrier network and its method for transmitting downlink data |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2007061250A1 (en) * | 2005-11-25 | 2007-05-31 | Samsung Electronics Co., Ltd. | Method for enhancing multicast/broadcast service |
| CN101001098A (en) * | 2006-01-12 | 2007-07-18 | 华为技术有限公司 | Method for converting downlink signal from repeater and its equipment |
| CN101009512A (en) * | 2006-01-24 | 2007-08-01 | 华为技术有限公司 | Wireless transfer communication OFDM access system and method |
| CN101043417A (en) * | 2006-03-23 | 2007-09-26 | 华为技术有限公司 | Downlink carrier network and its method for transmitting downlink data |
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