CN101795189B - A kind of two-layer distribution method and base station - Google Patents
A kind of two-layer distribution method and base station Download PDFInfo
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- CN101795189B CN101795189B CN201010003606.2A CN201010003606A CN101795189B CN 101795189 B CN101795189 B CN 101795189B CN 201010003606 A CN201010003606 A CN 201010003606A CN 101795189 B CN101795189 B CN 101795189B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
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Abstract
The invention provides a kind of two-layer distribution method, comprise: total number of plies of current transmission is divided into some groups, often organize corresponding one deck or two-layer, each group of corresponding layer is different, when the data of targeted customer are on two-layer when transmission, by a component dispensing targeted customer corresponding two-layer in described some groups.Present invention also offers a kind of base station.The possibility of user's two-layer transmission when the invention provides multi-user transmission, by the assignment constraint for two-layer user, is ensureing the expense optimizing signaling maximum under the prerequisite of systematic function.
Description
Technical field
The present invention relates to moving communicating field, particularly relate to a kind of two-layer distribution method and base station.
Background technology
In wireless communications, if use many antennas at transmitting terminal (base station (eNB) of such as evolution), the mode of spatial reuse can be taked to improve transmission rate, namely different data are launched in the different antennae position on the running time-frequency resource that transmitting terminal is identical, also many antennas are used at receiving terminal (UE), when single user, the resource of all antennas can all be distributed to same user, this transmission form is called SU-MIMO (single user multiple-input and multiple-output).In addition also can when multi-user by the Resourse Distribute in different antennae space to different user, this transmission form is called MU-MIMO (multiuser MIMO).If transmission system will support Single User MIMO and multiuser MIMO simultaneously, eNB is the data being necessary to be provided in UE with control signal under these two kinds of transmission modes.UE needs to know that eNB transmits order (Rank) used for this UE in these two kinds of transmission modes, in the single-user mode, because the resource of all antennas all distributes to same user, transmit the number of plies used and just equal eNB in this transmission order used, and in multi-user transmission, a corresponding user transmits total number of plies that the number of plies used is less than this transmission.Accomplish the switching at runtime of single user and multi-user transmission, eNB needs to send a notice the different data of UE at different transmission mode.
In addition, in the version number 10 of LTE, the transmission mode of MIMO has determined uses demodulation pilot frequency (Demodulation Reference Signal, referred to as DMRS) to carry out the pilot tone called as solution, UE will obtain the position of pilot tone, just can do the estimation of channel and interference in pilot tone.Total number of plies of different transmission has different pilot frequency designs, such as in the version number 10 of LTE, tentatively determine to have the pattern (DMRS Pattern) that three kinds different, time total number of plies of transmission or order are 1 to 2, with first pattern (DMRS pattern 1), as shown in Fig. 1 (a), transmission total number of plies or order be 3 to 4 time standby second pattern (DMRS pattern 2), as shown in Fig. 1 (b), total number of plies of transmission or order are time standby the 3rd pattern (DMRS pattern 3) of 5 to 8, as shown in Fig. 1 (c).In single user transmission, the data of all transport layers are all to same UE, as long as so UE obtains order just can know pilot frequency design, also can know the position of pilot tone.In multi-user transmission, UE will know that one deck of sum of ranks starts to transmit this UE, and base station needs the indication information for different UE distribution equivalent layer, and the layer mentioned here also can be called antenna port, and Distribution Layer is also equivalent to the distribution of antenna port.In the technology of existing version number 8, not same requirement, so the version number 10 of LTE needs a kind of new Layer assignment method to go to support the MIMO multi-user transmission based on DMRS.In addition, be limited to transmission performance, when multi-user transmission, a user distributes at most two-layer resource; Time total number of plies of transmission or order are greater than 2, at present, scheme is not also had how to distribute two-layer to targeted customer.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of two-layer distribution method and base station, provides the possibility of the two-layer transmission of user during multi-user transmission.
In order to solve the problem, the invention provides a kind of two-layer distribution method, comprise: total number of plies of current transmission is divided into some groups, often organize corresponding one deck or two-layer, each group of corresponding layer is different, when the data of targeted customer are on two-layer when transmission, by a component dispensing targeted customer corresponding two-layer in described some groups.
Further, said method also can have following characteristics, and when the data of targeted customer are transmitted on two-layer, the reference signal that the user of described two-layer correspondence is proprietary adopts code division multiplexing mode to transmit on identical physical resource; Or the reference signal that the user of described two-layer correspondence is proprietary adopts frequency division multiplexing mode to transmit on different physical resources.
Further, said method also can have following characteristics, and in corresponding two-layer group, the index value of its two-layer correspondence is respectively n and n+1, and wherein, n is even number; Or, for m and m+2, m are 0, Isosorbide-5-Nitrae, 5.
Further, said method also can have following characteristics, and when the total number of plies transmitted is 3, in corresponding two-layer group, the index value of its two-layer correspondence is 0 and 1; Or, 0 and 2.
Further, said method also can have following characteristics, and when total number of plies of transmission is 4 or 5, or when pilot frequency design is second pattern, in corresponding two-layer each group, the index value of its two-layer correspondence is 0 and 1,2 and 3; Or be, 0 and 2,1 and 3.
Further, said method also can have following characteristics, and when the total number of plies transmitted is 6 or 7, in corresponding two-layer each group, the index value of its two-layer correspondence is 0 and 1,2 and 3, and 4 and 5, or, 0 and 1,2 and 3,4 and 6; Or, 0 and 2,1 and 3,4 and 6, or, 0 and 2,1 and 3,4 and 5.
Further, said method also can have following characteristics, when total number of plies of transmission is 8, or, when pilot frequency design is the 3rd pattern, in corresponding two-layer each group, the index value of its two-layer correspondence is 0 and 1,2 and 3,4 and 5,6 and 7, or, 0 and 1,2 and 3,4 and 6,5 and 7; Or, 0 and 2,1 and 3,4 and 6,5 and 7, or, 0 and 2,1 and 3,4 and 5,6 and 7.
The present invention also provides a kind of base station, described base station, for total number of plies of current transmission is divided into some groups, often organize corresponding one deck or two-layer, each group of corresponding layer is different, when the data of targeted customer are on two-layer when transmission, by a component dispensing targeted customer corresponding two-layer in described some groups.
Further, above-mentioned base station also can have following characteristics, described base station, for when the data of targeted customer are transmitted on two-layer, identical physical resource adopts code division multiplexing mode transmit the proprietary reference signal of the user of described two-layer correspondence; Or, different physical resources adopts frequency division multiplexing mode transmit the proprietary reference signal of the user of described two-layer correspondence.
Further, above-mentioned base station also can have following characteristics, described base station, for dividing each group as follows: in corresponding two-layer group, the index value of its two-layer correspondence is respectively n and n+1, or is, m and m+2 that wherein, n is even number, and m is 0, Isosorbide-5-Nitrae, 5.
Further, above-mentioned base station also can have following characteristics, described base station, for dividing each group as follows: when the total number of plies transmitted is 3, the index value of corresponding two-layer its two-layer correspondence of group is 0 and 1; Or, 0 and 2.
Further, above-mentioned base station also can have following characteristics, described base station, for dividing each group as follows:
When total number of plies of transmission is 4 or 5, or when pilot frequency design is second pattern, in corresponding two-layer each group, the index value of its two-layer correspondence is 0 and 1; 2 and 3; Or be, 0 and 2,1 and 3.
Further, above-mentioned base station also can have following characteristics, described base station, for dividing each group as follows:
When the total number of plies transmitted is 6 or 7, in corresponding two-layer each group, the index value of its two-layer correspondence is 0 and 1,2 and 3,4 and 5, or, 0 and 1,2 and 3,4 and 6; Or, 0 and 2,1 and 3,4 and 6, or, 0 and 2,1 and 3,4 and 5.
Further, above-mentioned base station also can have following characteristics, described base station, for dividing each group as follows:
When total number of plies of transmission is 8, or when pilot frequency design is the 3rd pattern, in corresponding two-layer each group, the index value of its two-layer correspondence is 0 and 1,2 and 3,4 and 5,6 and 7, or, 0 and 1,2 and 3,4 and 6,5 and 7, or, 0 and 2,1 and 3,4 and 6,5 and 7, or, 0 and 2,1 and 3,4 and 5,6 and 7.
The present invention gives a kind of two-layer distribution method and base station, the possibility of user's two-layer transmission when providing multi-user transmission, by the assignment constraint for two-layer user, ensure the expense optimizing signaling maximum under the prerequisite of systematic function.
Accompanying drawing explanation
Accompanying drawing described herein is used to provide a further understanding of the present invention, and form a application's part, schematic description and description of the present invention, for explaining the present invention, does not form inappropriate limitation of the present invention.In the accompanying drawings:
Fig. 1 is the schematic diagram according to correlation technique.
Embodiment
Consider the problem not supporting the MIMO multi-user transmission based on demodulation pilot frequency in correlation technique in the version number 10 of LTE, The present invention gives a kind of two-layer distribution method, the possibility of user's two-layer transmission when this method providing multi-user transmission, by the restriction of Distribution Layer, ensureing the expense optimizing signaling maximum under the prerequisite of systematic function.
Suppose, the pilot frequency design of one deck and two-layer correspondence is the first pilot frequency design, and three layers and four layers of corresponding pilot frequency design are the second pilot frequency design, and five layers, six layers, seven layers and eight layers of right pilot frequency design are the 3rd pilot frequency design.
Two-layer distribution method provided by the invention comprises: total number of plies of current transmission or order are M, M is divided into k group, often organize corresponding one deck or two-layer, each group of corresponding layer is different, when the data of targeted customer are on two-layer when transmission, by a two-layer component dispensing targeted customer corresponding in described k group, the data of targeted customer distributed group correspondence two-layer on transmission.
Further, when the data of targeted customer are transmitted on two-layer, the reference signal (UE-specific reference signals) that the user of described two-layer correspondence is proprietary adopts code division multiplexing mode to transmit on identical physical resource.
Further, described data are the data that Physical Downlink Shared Channel (PDSCH, Physical downlinkshared channel) carries.
Further, the index value of corresponding two-layer its two-layer correspondence of group is n and n+1, and wherein, n is even number.
Further, when the total number of plies (order) transmitted is 3, the index value of corresponding two-layer its two-layer correspondence of group is 0 and 1.
Further, when total number of plies (order) of transmission is 4, or when pilot frequency design is second pattern, the index value of each group of corresponding two-layer its two-layer correspondence is 0 and 1,2 and 3.
Further, when the total number of plies (order) transmitted is 5 time, the index value of each group of corresponding two-layer its two-layer correspondence is 0 and 1,2 and 3.
Further, when the total number of plies (order) transmitted is 6 or 7 time, the index value of each group of corresponding two-layer its two-layer correspondence is 0 and 1,2 and 3,4 and 5, or the index value of each group of corresponding two-layer its two-layer correspondence is 0 and 1, or, 2 and 3, or, 4 and 6;
Further, when total number of plies (order) of transmission is 8, or, time pilot frequency design is the 3rd pattern, the index value of each group of corresponding two-layer its two-layer correspondence is 0 and 1,2 and 3,4 and 5,6 and 7, or the index value of each group of corresponding two-layer its two-layer correspondence is 0 and 1,2 and 3,4 and 6,5 and 7;
Further, when the data of targeted customer are on two-layer when transmission, the reference signal that the user of described two-layer correspondence is proprietary adopts frequency division multiplexing mode to transmit on different physical resources.
Further, the index value of corresponding two-layer its two-layer correspondence of group is m and m+2, m is 0, Isosorbide-5-Nitrae, 5.
Further, time total number of plies (order) of transmission is 3, the index value of described two-layer correspondence is 0 and 2;
Further, total number of plies (order) of transmission is 4, or time pilot frequency design is second pattern, the index value of each group of corresponding two-layer its two-layer correspondence is 0 and 2,1 and 3;
Further, when the total number of plies (order) transmitted is 5 time, the index value of each group of corresponding two-layer its two-layer correspondence is 0 and 2,1 and 3;
Further, time total number of plies (order) of transmission is 6 or 7, the index value of each group of corresponding two-layer its two-layer correspondence is 0 and 2,1 and 3,4 and 6, or the index value of each group of corresponding two-layer its two-layer correspondence is 0 and 2,1 and 3,4 and 5;
Further, total number of plies (order) of transmission is 8, or, time pilot frequency design is the 3rd pattern, the index value of each group of corresponding two-layer its two-layer correspondence is 0 and 2,1 and 3,4 and 6,5 and 7, or the index value of each group of corresponding two-layer its two-layer correspondence is 0 and 2,1 and 3,4 and 5,6 and 7.
Described layer index equals antenna port; Such as, layer index 0 corresponds to antenna port 7 to antenna port 13 to layer index 7.
When the data of user are on two-layer when transmission, described two-layer be in above-mentioned grouping, include two-layer one group, namely, described two-layer be the combination providing layer index in following method.
Method one
When the data of a user are on two-layer when transmission, described two-layer correspondence the proprietary reference signal (UE-specific reference signals) of user on identical physical resource, adopt code division multiplexing mode to transmit.
Method two
The index of described two-layer correspondence is n and n+1, and wherein, n is even number.
When the total number of plies (order) transmitted is 3, the index value of described two-layer correspondence is 0 and 1;
When total number of plies (order) of transmission is 4 or 5, or time pilot frequency design is second pattern, the index value of described two-layer correspondence is 0 and 1,2 and 3;
When the total number of plies (order) transmitted is 6 or 7, the index value of described two-layer correspondence is 0 and 1,2 and 3,4 and 5;
When total number of plies (order) of transmission is 8, or time pilot frequency design is the 3rd pattern, the index value of described two-layer correspondence is 0 and 1,2 and 3,4 and 5,6 and 7.
Method three
When the total number of plies (order) transmitted is 3, the index value of described two-layer correspondence is 0 and 1;
When total number of plies (order) of transmission is 4 or 5, or time pilot frequency design is second pattern, the index value of described two-layer correspondence is 0 and 1,2 and 3;
When the total number of plies (order) transmitted is 6 or 7, the index value of described two-layer correspondence is 0 and 1,2 and 3,4 and 6;
When total number of plies (order) of transmission is 8, or time pilot frequency design is the 3rd pattern, the index value of described two-layer correspondence is 0 and 1,2 and 3,4 and 6,5 and 7.
Method four
When the data of a user are on two-layer when transmission, described two-layer correspondence the proprietary reference signal of user on different physical resources, adopt frequency division multiplexing mode to transmit.
Method five
The index of described two-layer correspondence is m and m+2, and wherein, m can be 0, Isosorbide-5-Nitrae, 5.
When the total number of plies (order) transmitted is 3, the index value of described two-layer correspondence is 0 and 2;
When total number of plies (order) of transmission is 4 or 5, or time pilot frequency design is second pattern, the index value of described two-layer correspondence is 0 and 2,1 and 3;
When the total number of plies (order) transmitted is 6 or 7, the index value of described two-layer correspondence is 0 and 2,1 and 3,4 and 6;
When total number of plies (order) of transmission is 8, or when pilot frequency design is the 3rd pattern, the index value of described two-layer correspondence is 0 and 2,1 and 3,4 and 6,5 and 7.
Method six
When the total number of plies (order) transmitted is 3, the index value of described two-layer correspondence is 0 and 2;
When total number of plies (order) of transmission is 4 or 5, or time pilot frequency design is second pattern, the index value of described two-layer correspondence is 0 and 2,1 and 3;
When the total number of plies (order) transmitted is 6 or 7, the index value of described two-layer correspondence is 0 and 2,1 and 3,4 and 5;
When total number of plies (order) of transmission is 8, or when pilot frequency design is the 3rd pattern, the index value of described two-layer correspondence is 0 and 2,1 and 3,4 and 5,6 and 7.
Illustrate, Multi-User Dimension is multiplexing may be restricted to M layer, and such as, M=4, then, the grouping situation of the above-mentioned M of being greater than layer does not exist, and is just applied to the situation being less than or equal to M layer.
It should be noted that, when not conflicting, the embodiment in the application and the feature in embodiment can combine mutually.
The present invention also provides a kind of base station, described base station, for total number of plies of current transmission is divided into some groups, often organize corresponding one deck or two-layer, each group of corresponding layer is different, when the data of targeted customer are on two-layer when transmission, by a component dispensing targeted customer corresponding two-layer in described some groups.
Described base station, for when the data of targeted customer are transmitted on two-layer, identical physical resource adopts code division multiplexing mode transmit the proprietary reference signal of the user of described two-layer correspondence; Or, different physical resources adopts frequency division multiplexing mode transmit the proprietary reference signal of the user of described two-layer correspondence.
How base station specifically divides each group and please refer to embodiment of the method, repeats no more herein.
The possibility of user's two-layer transmission when the invention provides multi-user transmission, by the above-mentioned restriction for Distribution Layer, is ensureing the expense optimizing signaling maximum under the prerequisite of systematic function.
The foregoing is only embodiments of the invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within right of the present invention.
Claims (10)
1. a two-layer distribution method, it is characterized in that, comprise: total number of plies of current transmission is divided into some groups, often organize corresponding one deck or two-layer, each group of corresponding layer is different, when the data of targeted customer are on two-layer when transmission, by a component dispensing targeted customer corresponding two-layer in described some groups; In corresponding two-layer group, the index value of its two-layer correspondence is respectively n and n+1, and wherein, n is even number; Or, for m and m+2, m are 0, Isosorbide-5-Nitrae, 5;
When the data of targeted customer are transmitted on two-layer, the reference signal that the user of described two-layer correspondence is proprietary adopts code division multiplexing mode to transmit on identical physical resource; Or the reference signal that the user of described two-layer correspondence is proprietary adopts frequency division multiplexing mode to transmit on different physical resources.
2. the method for claim 1, is characterized in that,
When the total number of plies transmitted is 3, in corresponding two-layer group, the index value of its two-layer correspondence is 0 and 1; Or, 0 and 2.
3. the method for claim 1, is characterized in that, when total number of plies of transmission is 4 or 5; Or when pilot frequency design is second pattern, in corresponding two-layer each group, the index value of its two-layer correspondence is 0 and 1,2 and 3; Or be, 0 and 2,1 and 3;
Described second pattern is:
4. the method for claim 1, is characterized in that, when the total number of plies transmitted is 6 or 7, is specially:
When the total number of plies transmitted is 6, in corresponding two-layer each group, the index value of its two-layer correspondence is 0 and 1,2 and 3,4 and 5; Or, 0 and 2,1 and 3,4 and 5;
When the total number of plies transmitted is 7, in corresponding two-layer each group, the index value of its two-layer correspondence is 0 and 1,2 and 3,4 and 5; Or, 0 and 1,2 and 3,4 and 6; Or, 0 and 2,1 and 3,4 and 6; Or, 0 and 2,1 and 3,4 and 5.
5. the method for claim 1, is characterized in that, when total number of plies of transmission is 8; Or when pilot frequency design is the 3rd pattern, in corresponding two-layer each group, the index value of its two-layer correspondence is 0 and 1,2 and 3,4 and 5,6 and 7; Or, 0 and 1,2 and 3,4 and 6,5 and 7; Or, 0 and 2,1 and 3,4 and 6,5 and 7; Or, 0 and 2,1 and 3,4 and 5,6 and 7;
Described 3rd pattern is:
6. a base station, it is characterized in that, described base station, for total number of plies of current transmission is divided into some groups, often organize corresponding one deck or two-layer, each group of corresponding layer is different, when the data of targeted customer are on two-layer when transmission, by a component dispensing targeted customer corresponding two-layer in described some groups; Described base station, for dividing each group as follows: in corresponding two-layer group, the index value of its two-layer correspondence is respectively n and n+1; Or be, m and m+2 that wherein, n is even number, and m is 0, Isosorbide-5-Nitrae, 5;
When the data of targeted customer are transmitted on two-layer, identical physical resource adopt code division multiplexing mode transmit the proprietary reference signal of the user of described two-layer correspondence; Or, different physical resources adopts frequency division multiplexing mode transmit the proprietary reference signal of the user of described two-layer correspondence.
7. base station as claimed in claim 6, is characterized in that, described base station, for dividing each group as follows: when the total number of plies transmitted is 3, in corresponding two-layer group, the index value of its two-layer correspondence is 0 and 1; Or, 0 and 2.
8. base station as claimed in claim 6, is characterized in that, described base station, for dividing each group as follows:
When total number of plies of transmission is 4 or 5; Or when pilot frequency design is second pattern, in corresponding two-layer each group, the index value of its two-layer correspondence is 0 and 1,2 and 3; Or be, 0 and 2,1 and 3;
Described second pattern is:
9. base station as claimed in claim 6, is characterized in that, described base station, for dividing each group as follows:
When the total number of plies transmitted is 6 or 7, be specially:
When the total number of plies transmitted is 6, in corresponding two-layer each group, the index value of its two-layer correspondence is 0 and 1,2 and 3,4 and 5; Or, 0 and 2,1 and 3,4 and 5; Or,
When the total number of plies transmitted is 7, in corresponding two-layer each group, the index value of its two-layer correspondence is 0 and 1,2 and 3,4 and 5; Or, 0 and 1,2 and 3,4 and 6; Or, 0 and 2,1 and 3,4 and 6; Or, 0 and 2,1 and 3,4 and 5.
10. base station as claimed in claim 6, is characterized in that, described base station, for dividing each group as follows:
When total number of plies of transmission is 8; Or when pilot frequency design is the 3rd pattern, in corresponding two-layer each group, the index value of its two-layer correspondence is 0 and 1,2 and 3,4 and 5,6 and 7; Or, 0 and 1,2 and 3,4 and 6,5 and 7; Or, 0 and 2,1 and 3,4 and 6,5 and 7; Or, 0 and 2,1 and 3,4 and 5,6 and 7;
Described 3rd pattern is:
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| CN201010003606.2A CN101795189B (en) | 2010-01-07 | 2010-01-07 | A kind of two-layer distribution method and base station |
| PCT/CN2010/074632 WO2011082571A1 (en) | 2010-01-07 | 2010-06-28 | Method and base station for allocating layers |
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| CN201010003606.2A CN101795189B (en) | 2010-01-07 | 2010-01-07 | A kind of two-layer distribution method and base station |
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| EP2608475A2 (en) * | 2010-08-18 | 2013-06-26 | LG Electronics Inc. | Method and apparatus for transmitting uplink data in a wireless access system |
| CN107040345B (en) * | 2016-02-03 | 2020-12-18 | 华为技术有限公司 | Method and apparatus for transmitting pilot signal |
| CN112055995A (en) | 2018-03-13 | 2020-12-08 | 中兴通讯股份有限公司 | Transmission based on candidate resources or candidate resource groups |
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| CN101370192A (en) * | 2007-08-15 | 2009-02-18 | 中兴通讯股份有限公司 | High-rise informing method for demodulating reference signal mode in long-term evolution system |
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| CN101370192A (en) * | 2007-08-15 | 2009-02-18 | 中兴通讯股份有限公司 | High-rise informing method for demodulating reference signal mode in long-term evolution system |
Non-Patent Citations (2)
| Title |
|---|
| Further investigation on higher order DMRS design;ZTE;《3GPP R1-093808》;20091016;第1-7页，图1-2 * |
| UE-RS Patterns for ranks 5 to 8;QUALCOMM EUROPE;《3GPP R1-094869》;20091113;第2-3页 * |
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