CN101374269B - MBMS resources distribution method for TDD mode wireless communication system - Google Patents
MBMS resources distribution method for TDD mode wireless communication system Download PDFInfo
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- CN101374269B CN101374269B CN200710147521A CN200710147521A CN101374269B CN 101374269 B CN101374269 B CN 101374269B CN 200710147521 A CN200710147521 A CN 200710147521A CN 200710147521 A CN200710147521 A CN 200710147521A CN 101374269 B CN101374269 B CN 101374269B
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- mbms
- frequency resource
- business
- running time
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Abstract
The invention discloses a MBMS resource allocation method of a wireless communication system with time division duplex mode. The method comprises the following steps: (1) configuring the same service number Si for MBMS service in each cell in the coverage range of the MBMS service; (2) calculating the magnitude of a time frequency resource according to the content of the service with the number Si; and (3) allocating the same time frequency resource for service with the same service number Si in each cell. The method can be adopted to be used as basis of air interface combination algorithm of the MBMS service, and can ensure that each cell in the same service region transmits the same MBMS service in the specific 2D time frequency resource.
Description
Technical field
The present invention relates to the MBMS (multimedia broadcast multi-broadcasting business in a kind of next generation wireless communication system; Multimedia Broadcast/Multicast Service) resource allocation techniques relates in particular to a kind of MBMS resource allocation methods of wireless communication system of TDD mode.
Background technology
The MBMS business is a kind of high speed one way traffic with the transmission of broadcast or multicast form, and it can effectively transmit high-speed multimedia data to a plurality of users simultaneously.MBMS requires this professional user of any activation in the whole sub-district can receive this professional content of being sent out.Because the point-to-multipoint mode (PtM) among the MBMS is launched with broadcast mode; Up do not have a feedback information; The base station can't obtain each user's channel information, so common Poewr control method can't be implemented, downlink broadcast is launched with constant power within a certain period of time usually.
The professional resource allocation methods of the MBMS that prior art provides just carries out the professional resource allocation of MBMS in time domain and sign indicating number territory.And because next generation communication system is based on the communication system of OFDM (OFDM) mode, for TDD (time division duplex) pattern, service resources is that the bidimensional resource by time domain and frequency domain constitutes, and so just need rationally arrange time frequency two-dimensional resources.
In sum, need a kind of professional resource allocation methods of MBMS that is suitable for next generation communication system of design.
Summary of the invention
Technical problem to be solved by this invention is, a kind of MBMS resource allocation methods of wireless communication system of TDD mode is provided, and is the identical time frequency two-dimensional resources of MBMS traffic assignments in the same service area.
The invention provides a kind of MBMS resource allocation methods of wireless communication system of TDD mode, comprise the steps:
(1) in each sub-district in a MBMS Service coverage, to the same professional numbering S of this MBMS business configuration
i
(2) according to the said S that is numbered
iThe content of business calculate and should business transmit required running time-frequency resource size;
(3) for having identical services numbering S in each sub-district
iThe identical running time-frequency resource of traffic assignments.
The MBMS resource allocation methods of the wireless communication system of TDD mode of the present invention; Wherein, The said MBMS Service coverage of step (1) is made up of a plurality of base stations; Numbering is unified with the coverage of said MBMS business tine in each base station, and said MBMS business is used same professional numbering S to the sub-district in its coverage
i
The MBMS resource allocation methods of the wireless communication system of TDD mode of the present invention, wherein, said step (2) comprising: according to the said S of being numbered
iThe content of business calculate the number of the required time that takies of this business, establish and take the OFDM symbolic number and be [Symbol
i, Symbol
I+1..., Symbol
I+n], the subcarrier that takies is [Subcarr
j, Subcarr
J+1..., Subcarr
J+m], wherein, i represents the OFDM symbol initial point of a running time-frequency resource, the time symbol numbers that the n representative takies, and j represents the subcarrier starting point of a running time-frequency resource, the subcarrier number that the m representative takies.
The MBMS resource allocation methods of the wireless communication system of TDD mode of the present invention, wherein, the identical running time-frequency resource of the said distribution of step (3) comprises and distributes identical running time-frequency resource element number i and identical running time-frequency resource element number j.
The MBMS resource allocation methods of the wireless communication system of TDD mode of the present invention wherein, in the said step (3), is numbered S by scheduler for having identical services in each sub-district
iThe identical running time-frequency resource of traffic assignments.
Adopt method of the present invention, can be used as the MBMS business basis of merge algorithm of eating dishes without rice or wine, and guarantee that each sub-district in the same service area launch identical MBMS business in specific time-frequency bidimensional resource.
Description of drawings
Fig. 1 is the structure chart of the system that transmits and receives of the MBMS that adopts of the said method of present embodiment;
Fig. 2 is the operational flowchart of the MBMS traffic resource assignment of i sub-district of the said method of present embodiment;
Fig. 3 is the effect sketch map that the said method of the embodiment of the invention is applied to the uni-cell MBMS resource allocation;
Fig. 4 is the effect sketch map that the said method of the embodiment of the invention is applied to the resource allocation of many cell MBMSs.
Embodiment
The present invention is in order to solve the drawback that conventional solution exists; Further set forth the MBMS resource allocation methods of the wireless communication system of a kind of TDD mode of the present invention through following examples; Below embodiment is described in detail, but not as to qualification of the present invention.
The said method of the embodiment of the invention makes the MBMS business in each sub-district of its covering, use same professional numbering; And it is big or small to set the required running time-frequency resource of professional transmission according to said MBMS business tine, for the MBMS broadcasting service with identical services numbering is distributed identical running time-frequency resource.
Be that example is carried out concrete description with the MBMS resource allocation in the IMT-ADV communication system below:
Fig. 1 is the structure chart of the system that transmits and receives of the MBMS that adopts of the said method of the embodiment of the invention.
In the IMT-ADV system; The base station obtains identical MBMS business data flow; And the control business is shone upon and modulation system is just the same, then the MBMS business datum is carried out resource allocation, and same MBMS business takies the running time-frequency resource unit that configures; Like this, the emission data of this MBMS business in each base station be synchronous and content identical.
The transmitting terminal of the system that transmits and receives of the MBMS that the said method of the embodiment of the invention adopts utilizes the characteristics of IMT-ADV system for synchro system, makes a plurality of sub-districts launch identical MBMS business datum d at one time
MBMS
As shown in Figure 2, the embodiment of the invention said method comprising the steps of:
The Service coverage of a MBMS is made up of a plurality of base stations, and numbering is unified according to the coverage of a MBMS business tine in said a plurality of base stations, and said MBMS business is used same professional numbering to the sub-district in its Service coverage, is made as S
i
Be numbered S according to business
iThe professional content of MBMS calculate the number of the required time that takies of this business, establish and take the OFDM symbolic number and be [Symbol
i, Symbol
I+1, Symbol
I+n], the subcarrier that takies is [Subcarr
j, Subcarr
J+1..., Subcarr
J+m], wherein i represents the OFDM symbol initial point of a running time-frequency resource, the time symbol numbers that the n representative takies, and j represents the subcarrier starting point of a running time-frequency resource, the subcarrier number that the m representative takies.
As shown in Figure 3, be i sub-district C
iInterior business is numbered S
iThe running time-frequency resource sketch map of MBMS traffic assignments;
As shown in Figure 4, be the 1st sub-district C
1To n sub-district C
nInterior business is numbered S
iThe identical running time-frequency resource of MBMS traffic assignments.
Scheduler is identical services numbering S in each sub-district
iThe identical running time-frequency resource of MBMS traffic assignments, promptly the i of each sub-district is identical with j.
In sum; The present invention provides a kind of effective MBMS professional resource allocation methods in the next generation mobile communication system of tdd mode; This resource allocation methods is that the MBMS business eats dishes without rice or wine the basis of merge algorithm can guarantee that so identical MBMS business launch in each sub-district in the same service area in specific time-frequency bidimensional resource.
Certainly; The present invention also can have other various embodiments; Under the situation that does not deviate from spirit of the present invention and essence thereof; Those of ordinary skill in the art can make various corresponding changes and modification according to the present invention, but these corresponding changes and modification all should belong to the protection range of the appended claim of the present invention.
Claims (3)
1. the MBMS resource allocation methods of the wireless communication system of a TDD mode comprises the steps:
(1) in each sub-district in a MBMS Service coverage, to the same professional numbering S of this MBMS business configuration
i
(2) according to the said S that is numbered
iThe content of business calculate and should business transmit required running time-frequency resource size:
According to the said S that is numbered
iThe content of business calculate the number of the required time that takies of this business, establish and take the OFDM symbolic number and be [Symbol
i, Symbol
I+1..., Symbol
I+n], the subcarrier that takies is [Subcarr
j, Subcarr
J+1..., Subcarr
J+m], wherein, i represents the OFDM symbol initial point of a running time-frequency resource, the time symbol numbers that the n representative takies, and j represents the subcarrier starting point of a running time-frequency resource, the subcarrier number that the m representative takies;
(3) for having identical services numbering S in each sub-district
iThe identical running time-frequency resource of traffic assignments:
Distribute identical running time-frequency resource element number i and identical running time-frequency resource element number j.
2. the method for claim 1; It is characterized in that; The said MBMS Service coverage of step (1) is made up of a plurality of base stations, and numbering is unified with the coverage of said MBMS business tine in each base station, and said MBMS business is used same professional numbering S to the sub-district in its coverage
i
3. the method for claim 1 is characterized in that, in the said step (3), numbers S by scheduler for having identical services in each sub-district
iThe identical running time-frequency resource of traffic assignments.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200710147521A CN101374269B (en) | 2007-08-23 | 2007-08-23 | MBMS resources distribution method for TDD mode wireless communication system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200710147521A CN101374269B (en) | 2007-08-23 | 2007-08-23 | MBMS resources distribution method for TDD mode wireless communication system |
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| Publication Number | Publication Date |
|---|---|
| CN101374269A CN101374269A (en) | 2009-02-25 |
| CN101374269B true CN101374269B (en) | 2012-10-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200710147521A Expired - Fee Related CN101374269B (en) | 2007-08-23 | 2007-08-23 | MBMS resources distribution method for TDD mode wireless communication system |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021030959A1 (en) * | 2019-08-16 | 2021-02-25 | 华为技术有限公司 | Mbms synchronization method and apparatus |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1653748A (en) * | 2002-05-18 | 2005-08-10 | Lg电子株式会社 | Selective service method in multicast system |
| CN1881867A (en) * | 2005-06-17 | 2006-12-20 | 华为技术有限公司 | Method for eliminating interference between cells |
| CN1941948A (en) * | 2005-09-30 | 2007-04-04 | 西门子（中国）有限公司 | Method for increasing group broadcasting service performance in mobile telcommunication system |
| EP1582076B1 (en) * | 2003-01-06 | 2007-06-13 | Interdigital Technology Corporation | Method and system for organizing the cells of a wireless communication system and allocating resources to provide multimedia broadcast services |
-
2007
- 2007-08-23 CN CN200710147521A patent/CN101374269B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1653748A (en) * | 2002-05-18 | 2005-08-10 | Lg电子株式会社 | Selective service method in multicast system |
| EP1582076B1 (en) * | 2003-01-06 | 2007-06-13 | Interdigital Technology Corporation | Method and system for organizing the cells of a wireless communication system and allocating resources to provide multimedia broadcast services |
| CN1881867A (en) * | 2005-06-17 | 2006-12-20 | 华为技术有限公司 | Method for eliminating interference between cells |
| CN1941948A (en) * | 2005-09-30 | 2007-04-04 | 西门子（中国）有限公司 | Method for increasing group broadcasting service performance in mobile telcommunication system |
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| CN101374269A (en) | 2009-02-25 |
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