CN101568128A - Sub-carrier mapping method - Google Patents
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- CN101568128A CN101568128A CNA2008100945481A CN200810094548A CN101568128A CN 101568128 A CN101568128 A CN 101568128A CN A2008100945481 A CNA2008100945481 A CN A2008100945481A CN 200810094548 A CN200810094548 A CN 200810094548A CN 101568128 A CN101568128 A CN 101568128A
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Abstract
The invention discloses a sub-carrier mapping method which comprises: with the set resource block elements as units, physical resource blocks in the frequency band range are rearranged according to a rearrangement sequence so as to be mapped into logical resource blocks; the mapped logical resource blocks in the frequency band range are grouped by a base station, each grouped logical resource block respectively corresponds to one sector, and the superframe control information sent by each sector carries a logical resource block group number which corresponds to the sector; and in each sector of the base station, the resources in the logical resource block group are divided into a centralized mapping resource group and a distributed mapping resource group according to the set proportion, wherein continuous sub-carriers in each resource block unit in the centralized mapping resource group are directly mapped to each resource allocation unit, and after being rearranged through a permutation matrix, all sub-carriers in the distributed mapping resource group are sequentially mapped to each resource allocation unit. The technical scheme of the invention can ensure that users who move quickly and slowly can obtain high throughput.
Description
Technical field
The present invention relates to the broadband wireless communication technique in a kind of moving communicating field, especially relate to a sub-carrier mapping method.
Background technology
In the wireless communication system, the base station is to show the equipment that terminal provides service, and the base station communicates by uplink and downlink link and terminal, and the direction of terminal is arrived in the descending base station that is meant, the up direction that is meant terminal to base station.A plurality of terminals can send data by up link to the base station simultaneously, also can receive data simultaneously from the base station by down link.
Mobile WiMAX (Worldwide Interoperability for Microwave Access, micro-wave access to global intercommunication), UMB (Ultra Mobile Broadband, Ultra-Mobile Broadband) and LTE (3GPPLong Term Evolution, the 3GPP Long Term Evolution) etc. wide-band mobile communication system of future generation all adopts the access mode of OFDMA (Orthogonal Frequency Division Multiple Access, orthogonal frequency division multiplexing multiple access) at down link.Under given system bandwidth, on the angle of frequency domain, different users realizes the purpose that multiple access inserts by the orthogonal sub-carriers resource that takies some.Usually, in the scope, the mapping mode of all subcarriers is single subcarrier mapping mode, centralized mapping mode or distributed mapping mode on the frequency domain at one time.Wherein, the sub-carrier resources of distributing in the centralized subcarrier mapping mode in user's the Resource Block is continuous; In the distributed sub-carrier mapping mode, at first by constant series all subcarriers in the frequency band range are replaced, the sub-carrier resources of distributing in user's the Resource Block disperses.Centralized mapping can be supported frequency selective scheduling, and distributed mapping can produce frequency diversity.Existing subcarrier mapping mode can not be brought into play the advantage of centralized mapping and distributed mapping simultaneously owing to only can adopt a sub-carrier mapping mode in the same time.
Summary of the invention
The technical problem to be solved in the present invention provides a sub-carrier mapping method, guarantees that fast moving and the usefulness that moves at a slow speed obtain high-throughput per family.
In order to address the above problem, the invention provides a sub-carrier mapping method, step comprises:
(1) is unit with the Resource Block unit of setting, with the rearrangement of the Physical Resource Block in the frequency band range, is mapped as logical resource block according to retracing sequence;
(2) base station is with the logical resource block grouping after shining upon in the frequency band range, and each the logical resource block group after the grouping is sector of correspondence respectively, carries the group number of the logical resource block group of corresponding sector in the superframe control information that each sector sends;
(3) each sector under described base station is divided into centralized mapping resource group and distributed mapping resource group according to the ratio of setting with the resource in the logical resource block group; Continuous subcarrier in the described centralized mapping resource group in each Resource Block unit is mapped directly to each resource allocation unit; All subcarriers in the described distributed mapping resource group are mapped to each resource allocation unit after resequencing by permutation matrix successively.
Further, in the step (1), described Physical Resource Block is made up of subcarrier and orthogonal frequency division multiplex OFDM symbol, and described Resource Block cell size is M subcarrier * N OFDM symbol, and wherein M, N are natural number.
Further, in the step (1), described Resource Block unit is chosen according to the different sub carrier spacing parameter of different system.
Further, in the step (1), described Resource Block unit is made up of 18 subcarriers and 6 OFDM symbols, and perhaps, described Resource Block unit is made up of 20 subcarriers and 6 OFDM symbols.
Further, in the step (1), the selected principle of described retracing sequence is: for the retracing sequence of 1～P, adjacent numerical value difference can both satisfy P/Q, and P and Q are natural number, and the value of Q is 4 or 5.
Further, in the step (2), when described logical resource block included three logical resource block groups, described three logical resource block groups were respectively corresponding to the subcarrier of three sectors under the base station.
Further, in the step (3), the ratio of described centralized mapping resource group and distributed mapping resource group is provided with on the backstage in the base station, perhaps, indicates the ratio that described centralized mapping resource group and distributed mapping resource group are set according to the channel quality of uplink feedback.
Further, in the step (3), described ratio is 2: 3.
Technical solution of the present invention is passed through externally constant series and inner constant series, and the ratio of pooling of resources piece and distributed resource blocks, can support frequency selective scheduling simultaneously and realize frequency diversity, support distributed and centralized frequency map simultaneously, guarantee that fast moving and the usefulness that moves at a slow speed obtain high-throughput per family, have further satisfied the demand of wide-band mobile communication system of future generation.
Description of drawings
Fig. 1 is the composition schematic diagram of a kind of frame structure that control channel is relevant among the present invention;
Fig. 2 is the realization flow figure of sub-carrier mapping method of the present invention;
Fig. 3 a is the composition structure chart of preferred embodiment first Resource Block among the present invention;
Fig. 3 b is the composition structure chart of preferred embodiment second Resource Block among the present invention;
Fig. 4 is the mapping process schematic diagram of the constant series of the preferred embodiment of the present invention;
Fig. 5 is the mapping process schematic diagram of centralized mapping resource group and distributed mapping resource group in the embodiment of the invention.
Embodiment
Technical solution of the present invention has solved the problem that traditional subcarrier mapping can not be supported multiple subcarrier mapping mode at one time simultaneously, can satisfy the nonselective user's data transmission requirement of frequency selectivity and frequency simultaneously, has more flexibility.
With reference to the accompanying drawings and in conjunction with the preferred embodiment of the present invention, be that example is done detailed description to sub-carrier mapping method with the broadband cellular wireless communication system.
As shown in Figure 1, be the composition schematic diagram of a kind of frame structure that control channel is relevant among the present invention, superframe 101 is made up of 4 unit frame 102, and superframe control information 103 is positioned on several symbols that superframe begins to locate.Unit frame 102 is made up of 8 subframe unit 104, and subframe unit 104 is divided into descending sub frame unit and sub-frame of uplink unit, can be configured according to system.Subframe unit 104 is made of 6 OFDM symbols 105.
As shown in Figure 2, be the realization flow figure of sub-carrier mapping method of the present invention, the concrete steps of sub-carrier mapping method are as follows:
Step S201: with predefined Resource Block unit is unit, with the Physical Resource Block in the frequency band range 401 (referring to Fig. 4) rearrangement, is mapped as logical resource block 403 (referring to Fig. 4) according to retracing sequence 402 (referring to Fig. 4).
The Resource Block cell size is M subcarrier 303 * N OFDM (OFDM) symbol 105, and wherein M, N are natural number, according to the different sub carrier spacing parameter of different system, can select different Resource Block cell size for use.
Be the composition that example illustrates the Resource Block unit with the first Resource Block unit and the second Resource Block unit below:
Shown in Fig. 3 a, be the composition structure chart of the first Resource Block unit 301, the first Resource Block unit 301 is made up of 18 subcarriers 303 and 6 OFDM symbols 105.
Shown in Fig. 3 b, be the composition structure chart of the second Resource Block unit 302, the second Resource Block unit 302 is made up of 20 subcarriers 303 and 6 OFDM symbols 105.
As shown in Figure 4, be the mapping process schematic diagram of constant series of the present invention, wherein, the 5M bandwidth adopts the BWA of OFDMA access mode to comprise 400 available subcarriers 303 altogether, according to frame structure shown in Figure 1, subframe unit 104 is made up of 6 OFDM symbols 105.
If the subframe unit 104 of 5M bandwidth is divided according to the frame mode of the second Resource Block unit 302 among Fig. 3 b, then subframe unit 104 can be divided into 20 second Resource Block unit 302.Retracing sequence 402 is [1,5,9,13,17,2,6,10,14,18,37,11,15,19,4,8,12,16,20].20 second Resource Block unit 302 in the Physical Resource Block 401 are converted to logical resource block 403 through the rearrangement of retracing sequence 402.20 second Resource Block unit 302 in the logical resource block 403 are divided into different logical resource block groups, promptly are divided into logical resource block group 1, logical resource block group 2 and logical resource block group 3, and wherein 1,2,3 is group number.
To sum up, the Resource Block unit that multiply by 6 OFDM symbols 105 with 20 subcarriers 303 is a unit, with 401 rearrangements of the Physical Resource Block in the frequency band range, is mapped as logical resource block 403 by retracing sequence 402, retracing sequence is [1,5,9,13,17,2,6,10,14,18,3,7,11,15,19,4,8,12,16,20].
Step S202: the base station is with the logical resource block grouping after shining upon in the frequency band range, and each the logical resource block group after the grouping is sector of correspondence respectively, carries the group number of the logical resource block group of corresponding sector in the superframe control information 103 that each sector sends.
With reference to Fig. 3 example, the base station corresponds respectively to logical resource block group 1, logical resource block group 2 and logical resource block group 3 after shining upon in the frequency band range subcarrier 303 of three sectors under the base station.
Step S203: the base station is provided with the ratio of centralized mapping resource group 501 (referring to Fig. 5) and distributed mapping resource group 502 (referring to Fig. 5).
In the present embodiment, the ratio that the base station is provided with centralized mapping resource group 501 and distributed mapping resource group 502 is 2: 3.But the backstage, base station is provided with the ratio of centralized mapping resource group 501 and distributed mapping resource group 502, also can indicate the ratio that centralized mapping resource group 501 and distributed mapping resource group 502 are set according to the channel quality of uplink feedback.
Step S204: each sector is according to ratio under the base station, with each the Resource Block dividing elements in the logical resource block group is centralized mapping resource group 501 and distributed mapping resource group 502, centralized mapping resource group 501 and distributed mapping resource group 502 proportionally obtain the Resource Block unit of respective numbers, wherein, continuous sub-carriers 303 is mapped directly to each resource allocation unit 504 in each Resource Block in the centralized mapping resource group 501, all subcarriers in the distributed mapping resource group 502 are mapped to each resource allocation unit 504 after resequencing by permutation matrix 503 (it belongs to inner constant series) (referring to Fig. 5) successively.
As shown in Figure 5, be the mapping process schematic diagram of centralized mapping resource group and distributed mapping resource group among the embodiment.The sector is divided into centralized mapping resource group 501 and distributed mapping resource group 502 according to 2: 3 ratio with the resource in the logical resource block group; Continuous subcarrier 303 in each Resource Block in the centralized mapping resource group 501 directly is mapped to each resource allocation unit 504; All subcarriers 303 in the distributed mapping resource group 502 are mapped to each resource allocation unit 504 after resequencing by permutation matrix 53 successively.
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 distortion according to the present invention, but these corresponding changes and distortion all should belong to the protection range of the appended claim of the present invention.
Claims (8)
1, a sub-carrier mapping method, step comprises:
(1) is unit with the Resource Block unit of setting, with the rearrangement of the Physical Resource Block in the frequency band range, is mapped as logical resource block according to retracing sequence;
(2) base station is with the logical resource block grouping after shining upon in the frequency band range, and each the logical resource block group after the grouping is sector of correspondence respectively, carries the group number of the logical resource block group of corresponding sector in the superframe control information that each sector sends;
(3) each sector under described base station is divided into centralized mapping resource group and distributed mapping resource group according to the ratio of setting with the resource in the logical resource block group; Continuous subcarrier in the described centralized mapping resource group in each Resource Block unit is mapped directly to each resource allocation unit; All subcarriers in the described distributed mapping resource group are mapped to each resource allocation unit after resequencing by permutation matrix successively.
2, sub-carrier mapping method according to claim 1, it is characterized in that in the step (1), described Physical Resource Block is made up of subcarrier and orthogonal frequency division multiplex OFDM symbol, described Resource Block cell size is M subcarrier * N OFDM symbol, and wherein M, N are natural number.
3, sub-carrier mapping method according to claim 1 is characterized in that, in the step (1), described Resource Block unit is chosen according to the different sub carrier spacing parameter of different system.
4, sub-carrier mapping method according to claim 1 is characterized in that, in the step (1), described Resource Block unit is made up of 18 subcarriers and 6 OFDM symbols, and perhaps, described Resource Block unit is made up of 20 subcarriers and 6 OFDM symbols.
5, sub-carrier mapping method according to claim 1 is characterized in that, in the step (1), the selected principle of described rearrangement is: for the retracing sequence of 1～P, adjacent numerical value difference can both satisfy P/Q, and P and Q are natural number, and the value of Q is 4 or 5.
6, sub-carrier mapping method according to claim 1 is characterized in that, in the step (2), when described logical resource block included three logical resource block groups, described three logical resource block groups were respectively corresponding to the subcarrier of three sectors under the base station.
7, sub-carrier mapping method according to claim 1, it is characterized in that, in the step (3), the ratio of described centralized mapping resource group and distributed mapping resource group is provided with on the backstage in the base station, perhaps, indicate the ratio that described centralized mapping resource group and distributed mapping resource group are set according to the channel quality of uplink feedback.
8, sub-carrier mapping method according to claim 1 is characterized in that, in the step (3), described ratio is 2: 3.
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Cited By (10)
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| WO2010067200A1 (en) * | 2008-11-17 | 2010-06-17 | 刘建 | Radio resource mapping method |
| CN102196575A (en) * | 2010-03-17 | 2011-09-21 | 中兴通讯股份有限公司 | Resource mapping method and base station |
| CN102611664A (en) * | 2011-01-21 | 2012-07-25 | 华为技术有限公司 | Signal transmitting method and device |
| CN103181112A (en) * | 2010-08-16 | 2013-06-26 | 高通股份有限公司 | Search space design for relay physical downlink control channel (r-pdcch) |
| CN107690187A (en) * | 2016-08-04 | 2018-02-13 | 北京信威通信技术股份有限公司 | A kind of method and device of physical source distributing |
| WO2018107500A1 (en) * | 2016-12-16 | 2018-06-21 | 广东欧珀移动通信有限公司 | Resource mapping method and communication device |
| WO2018202091A1 (en) * | 2017-05-05 | 2018-11-08 | 中兴通讯股份有限公司 | Control channel resource mapping method and device, and storage medium |
| CN110336651A (en) * | 2019-07-05 | 2019-10-15 | 北京神经元网络技术有限公司 | Selection method, device, equipment and the medium of subcarrier |
| CN110832797A (en) * | 2017-03-24 | 2020-02-21 | 华为技术有限公司 | Method and device for data transmission |
| CN111542119A (en) * | 2016-08-12 | 2020-08-14 | 华为技术有限公司 | Signal sending method, network equipment and terminal equipment |
Family Cites Families (3)
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| CN101039297A (en) * | 2006-03-17 | 2007-09-19 | 北京三星通信技术研究有限公司 | Method and system for mapping virtual resource block to physical resource block |
| CN101094214A (en) * | 2006-06-21 | 2007-12-26 | 中兴通讯股份有限公司 | Data multiplexing method in use for orthogonal frequency division multiplexing communication system |
| CN101150553A (en) * | 2006-09-19 | 2008-03-26 | 中兴通讯股份有限公司 | A resource block allocation method based on OFDM system |
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2008
- 2008-04-22 CN CN2008100945481A patent/CN101568128B/en not_active Expired - Fee Related
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| US8818436B2 (en) | 2008-11-17 | 2014-08-26 | Zte Corporation | Radio resource mapping method |
| WO2010067200A1 (en) * | 2008-11-17 | 2010-06-17 | 刘建 | Radio resource mapping method |
| CN102196575A (en) * | 2010-03-17 | 2011-09-21 | 中兴通讯股份有限公司 | Resource mapping method and base station |
| WO2011113277A1 (en) * | 2010-03-17 | 2011-09-22 | 中兴通讯股份有限公司 | Resource mapping method and base station |
| CN102196575B (en) * | 2010-03-17 | 2015-11-25 | 中兴通讯股份有限公司 | Method for mapping resource and base station |
| US9380567B2 (en) | 2010-08-16 | 2016-06-28 | Qualcomm Incorporated | Search space design for relay physical downlink control channel (R-PDCCH) |
| CN103181112B (en) * | 2010-08-16 | 2016-10-12 | 高通股份有限公司 | Design for relaying the search volume of physical downlink control channel (R-PDCCH) |
| CN103181112A (en) * | 2010-08-16 | 2013-06-26 | 高通股份有限公司 | Search space design for relay physical downlink control channel (r-pdcch) |
| CN102611664B (en) * | 2011-01-21 | 2015-04-29 | 华为技术有限公司 | Signal transmitting method and device |
| US9031155B2 (en) | 2011-01-21 | 2015-05-12 | Huawei Technologies Co., Ltd. | Method and apparatus for sending signals |
| WO2012097608A1 (en) * | 2011-01-21 | 2012-07-26 | 华为技术有限公司 | Method of transmitting signals and device thereof |
| CN102611664A (en) * | 2011-01-21 | 2012-07-25 | 华为技术有限公司 | Signal transmitting method and device |
| CN107690187A (en) * | 2016-08-04 | 2018-02-13 | 北京信威通信技术股份有限公司 | A kind of method and device of physical source distributing |
| CN111542119A (en) * | 2016-08-12 | 2020-08-14 | 华为技术有限公司 | Signal sending method, network equipment and terminal equipment |
| CN111542119B (en) * | 2016-08-12 | 2023-05-12 | 华为技术有限公司 | Signal transmission method, network equipment and terminal equipment |
| WO2018107500A1 (en) * | 2016-12-16 | 2018-06-21 | 广东欧珀移动通信有限公司 | Resource mapping method and communication device |
| US11165550B2 (en) | 2016-12-16 | 2021-11-02 | Guangdong Oppo Mobile Telecommunications Corp., Ltd. | Resource mapping method and communication device |
| CN110832797B (en) * | 2017-03-24 | 2021-05-18 | 华为技术有限公司 | Method and device for data transmission |
| CN110832797A (en) * | 2017-03-24 | 2020-02-21 | 华为技术有限公司 | Method and device for data transmission |
| US11057155B2 (en) | 2017-03-24 | 2021-07-06 | Huawei Technologies Co., Ltd. | Data transmission method and apparatus |
| US11784753B2 (en) | 2017-03-24 | 2023-10-10 | Huawei Technologies Co., Ltd. | Data transmission method and apparatus |
| WO2018202091A1 (en) * | 2017-05-05 | 2018-11-08 | 中兴通讯股份有限公司 | Control channel resource mapping method and device, and storage medium |
| CN110336651A (en) * | 2019-07-05 | 2019-10-15 | 北京神经元网络技术有限公司 | Selection method, device, equipment and the medium of subcarrier |
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