CN101577570B - Method and system for distributing downstream double-current transmitted Midamble codes in multiple input multiple output (MIMO) mode - Google Patents

Method and system for distributing downstream double-current transmitted Midamble codes in multiple input multiple output (MIMO) mode Download PDF

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Publication number
CN101577570B
CN101577570B CN 200810092889 CN200810092889A CN101577570B CN 101577570 B CN101577570 B CN 101577570B CN 200810092889 CN200810092889 CN 200810092889 CN 200810092889 A CN200810092889 A CN 200810092889A CN 101577570 B CN101577570 B CN 101577570B
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transmission block
search window
search
sequence code
main transmission
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CN101577570A (en
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张应余
耿鹏
林伟
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ZTE Corp
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ZTE Corp
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Abstract

The invention discloses a method for distributing downstream double-current transmitted Midamble codes in a multiple input multiple output (MIMO) mode. The method comprises the following steps: a plurality of search windows are respectively allotted to users at the current time slot, wherein each search window corresponds to a Midamble code; and the search windows are allotted to a main transmission block and an auxiliary transmission block which correspond to the users in an alternating mode, a corresponding relation between the Midamble code of each search window and the main transmission block or the auxiliary transmission block to which search window is allotted is configured, and the main transmission block or the auxiliary transmission block is allotted to each search window. The technical scheme can realize the distribution of the Midamble code under the condition of downstream double-current transmission and enables a receiver to be capable of conveniently and effectively receiving transmitted data.

Description

Middle trained sequence code distribution method and the system of descending stream transmission in the MIMO pattern
Technical field
The present invention relates to the communications field, and especially, relate to the middle trained sequence code distribution method of descending stream transmission in a kind of multiple-input, multiple-output (MultipleInput Multiple OutPut is referred to as MIMO) pattern.
Background technology
The MIMO technology is the popular research field of moving communicating field in recent years, and it is characterised in that transmitting set and receiver all introduced many antennas.
Like this, with respect to the traditional single output of single input (Single Input Single OutPut is referred to as SISO) system, mimo system can obtain by space diversity reception to communicate or space multiplexing technique the maximum lift of power system capacity.
At present, the MIMO scheme mainly is to utilize different training sequence displacements (midshift) that major-minor data flow is distinguished, and so just need to expand the method for salary distribution of Mid code.In correlation technique, the Default mode of Midamble code under the right and wrong MIMO pattern of use, when Fig. 1 has listed K=8, the method for salary distribution of the correspondence of Default mode Midamble code.Yet, do not propose in the correlation technique two downstream transfer are carried out the scheme that the Midamble code distributes.
Summary of the invention
Consider the problems referred to above and make the present invention, for this reason, main purpose of the present invention is to provide the middle trained sequence code allocative decision of descending stream transmission in a kind of MIMO mode, to solve in the correlation technique problem of distributing the Midamble code when two downstream transfer.
According to one embodiment of present invention, provide the middle trained sequence code distribution method of descending stream transmission in a kind of MIMO mode, wherein, descending double fluid comprises the transport stream of main transmission block and the transport stream of auxiliary transmission block.
Middle trained sequence code distribution method according to descending stream transmission in the MIMO mode of the embodiment of the invention comprises: the user to current time slots distributes respectively a plurality of search windows, and wherein, each search window is corresponding to a middle trained sequence code; In the mode that replaces a plurality of search windows are distributed to main transmission block and auxiliary transmission block corresponding to the user, and for each search window, configure in the middle of it training sequence code with to the main transmission block of its distribution or the corresponding relation of auxiliary transmission block, wherein, each search window is distributed a main transmission block or an auxiliary transmission block.
Preferably, distribute the processing of a plurality of search windows to be specially in the mode that replaces: for a plurality of search windows, being the main transmission block that the search window of odd number is distributed to the user with the middle trained sequence code, is the auxiliary transmission block that the search window of even number is distributed to the user with the middle trained sequence code.
In addition, technique scheme further comprises: the user searches corresponding search window according to the middle trained sequence code of a plurality of search windows and obtains this user's main transmission block or auxiliary transmission block.
Preferably, the quantity of above-mentioned a plurality of search windows is at least 2.
According to another embodiment of the present invention, provide the middle trained sequence code distribution system of descending stream transmission in a kind of MIMO mode, wherein, this descending double fluid comprises the transport stream of main transmission block and the transport stream of auxiliary transmission block.
This system comprises: the first distribution module, be used for the user of current time slots is distributed respectively a plurality of search windows, and wherein, each search window is corresponding to a middle trained sequence code; The second distribution module, be used in the mode that replaces a plurality of search windows being distributed to main transmission block and auxiliary transmission block corresponding to the user, and for each search window, configure in the middle of it training sequence code with to the main transmission block of its distribution or the corresponding relation of auxiliary transmission block, wherein, each search window is distributed a main transmission block or an auxiliary transmission block.
Wherein, the second distribution module distributes the processing of a plurality of search windows to be specially in the mode that replaces: for a plurality of search windows, being the main transmission block that the search window of odd number is distributed to the user with the middle trained sequence code, is the auxiliary transmission block that the search window of even number is distributed to the user with the middle trained sequence code.
This system can further comprise: the recipient is used for searching corresponding search window and obtaining user's main transmission block or auxiliary transmission block according to the middle trained sequence code of a plurality of search windows.
Preferably, the quantity of above-mentioned a plurality of search windows is at least 2.
By technique scheme of the present invention, can be in the situation that two downstream transfer realizes the distribution of Midamble code, so that the recipient can make things convenient for, receive efficiently the data of transmission.
Description of drawings
Accompanying drawing described herein is used to provide a further understanding of the present invention, consists of the application's a part, and illustrative examples of the present invention and explanation thereof are used for explaining the present invention, do not consist of improper restriction of the present invention.In the accompanying drawings:
Fig. 1 is the method for salary distribution schematic diagram of the correspondence of Default mode Midamble code during K=8 in the correlation technique;
Fig. 2 is the flow chart according to the middle trained sequence code distribution method of descending stream transmission in the MIMO mode of the inventive method embodiment;
Fig. 3 a is the corresponding method of salary distribution schematic diagram of Midamble code main flow that the method for the inventive method embodiment is suitable under the Default mode MIMO pattern when K=8;
Fig. 3 b is the corresponding method of salary distribution schematic diagram of Midamble code secondary flow that the method for the inventive method embodiment is suitable under the Default mode MIMO pattern when K=8;
Fig. 4 is the schematic diagram according to the channel estimating search window correspondence position of the embodiment of the invention; And
Fig. 5 is the block diagram of the middle trained sequence code distribution system of descending stream transmission in the MIMO mode of system according to the invention embodiment.
Embodiment
Embodiment of the method
In the present embodiment, provide the middle trained sequence code distribution method of descending stream transmission in a kind of MIMO mode, wherein, descending double fluid comprises the transport stream of main transmission block and the transport stream of auxiliary transmission block.Fig. 2 is the flow chart according to the middle trained sequence code distribution method of descending stream transmission in the MIMO mode of the embodiment of the invention.
As shown in Figure 2, the method comprises the steps: step S202, and the user of current time slots is distributed respectively a plurality of search windows, wherein, each search window is corresponding to a middle trained sequence code (Midamble shift), and wherein, the quantity of a plurality of search windows is at least 2; Step S204, in the mode that replaces a plurality of search windows are distributed to main transmission block and auxiliary transmission block corresponding to the user, and for each search window, configure in the middle of it training sequence code with to the main transmission block of its distribution or the corresponding relation of auxiliary transmission block, wherein, each search window is distributed a main transmission block or an auxiliary transmission block.
Wherein, above-mentionedly distribute the processing of a plurality of search windows to be specially in the mode that replaces: for a plurality of search windows, being the main transmission block that the search window of odd number is distributed to the user with the middle trained sequence code, is the auxiliary transmission block that the search window of even number is distributed to the user with the middle trained sequence code.
In addition, technique scheme further comprises: the user searches corresponding search window according to the middle trained sequence code of a plurality of search windows and obtains user's main transmission block or auxiliary transmission block.
Fig. 3 a and Fig. 3 b be the method for the inventive method embodiment when K=8, applicable Midamble code main flow and the corresponding method of salary distribution schematic diagram of code secondary flow under the Default mode MIMO pattern.
As shown in Figure 4, the every user assignment Kuser of a current time slots Midamble shift, i.e. Kuser search window; The Midamble that main piece is corresponding is m (1): 2:(Kuser)That is the search window that, main piece is corresponding is 1:2:Kuser; The Midamble of auxiliary correspondence is m (2): 2:(Kuser)That is, the search window of auxiliary correspondence is 2:2:Kuser;
Below, take K=8, two SF=2 users as example, technique scheme is elaborated.
Step 1 is established current time slots and is distributed simultaneously two users K=8, the long W=P/K=16 of window;
Step 2, m (1)～m (4)Be the Midamble code that user 1 distributes, m (5)～m (8)The Midamble code that is assigned to for user 2;
Step 3, in conjunction with Fig. 4, the search window of user's 1 correspondence is 1～4;
Step 4, the search window of user's 2 correspondences is 5～8;
Step 5, m (1), m (3)Distribute to main piece of the user 1, that is, search window 1,3 is distributed to main piece of the user 1;
Step 6, m (2), m (4)Distribute to user 1 auxiliary, that is, search window 2,4 is distributed to auxiliary of user 1;
Step 7, m (5), m (7)Distribute to main piece of the user 2, that is, search window 5,7 is distributed to main piece of the user 2;
Step 8, m (6), m (8)Distribute to user 2 auxiliary, that is, search window 6,8 is distributed to auxiliary of user 2.
System embodiment
In the present embodiment, provide the middle trained sequence code distribution system of descending stream transmission in a kind of MIMO mode, wherein, this descending double fluid comprises the transport stream of main transmission block and the transport stream of auxiliary transmission block.
As shown in Figure 5, middle trained sequence code distribution system according to descending stream transmission in the MIMO mode of the present embodiment comprises: the first distribution module 502, be used for the user of current time slots is distributed respectively a plurality of search windows, wherein, each search window is corresponding to a middle trained sequence code; The second distribution module 504, be used in the mode that replaces a plurality of search windows being distributed to main transmission block and auxiliary transmission block corresponding to the user, and for each search window, configure in the middle of it training sequence code with to the main transmission block of its distribution or the corresponding relation of auxiliary transmission block, wherein, each search window is distributed a main transmission block or an auxiliary transmission block.
Wherein, the second distribution module 504 distributes the processing of a plurality of search windows to be specially in the mode that replaces: for a plurality of search windows, being the main transmission block that the search window of odd number is distributed to the user with the middle trained sequence code, is the auxiliary transmission block that the search window of even number is distributed to the user with the middle trained sequence code.
This system can further comprise: the recipient is used for searching corresponding search window and obtaining user's main transmission block or auxiliary transmission block according to the middle trained sequence code of a plurality of search windows.
Preferably, the quantity of above-mentioned a plurality of search windows is at least 2.
In sum, by means of technical scheme of the present invention, can in the situation that two downstream transfer realizes the distribution of Midamble code, filled up the blank in the correlation technique, and so that the recipient can make things convenient for, receive efficiently the data of transmission.
The above is the preferred embodiments of the present invention only, is not limited to the present invention, and 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 modification of doing, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.

Claims (8)

1. the middle trained sequence code distribution method of descending stream transmission in the MIMO mode, wherein, described descending double fluid comprises the transport stream of main transmission block and the transport stream of auxiliary transmission block, it is characterized in that, described method comprises:
User to current time slots distributes respectively a plurality of search windows, and wherein, each search window is corresponding to a middle trained sequence code;
In the mode that replaces described a plurality of search windows are distributed to main transmission block and auxiliary transmission block corresponding to described user, and for described each search window, configure in the middle of it training sequence code with to the main transmission block of its distribution or the corresponding relation of auxiliary transmission block, wherein, each search window is distributed a main transmission block or an auxiliary transmission block.
2. method according to claim 1, it is characterized in that, distribute the processing of described a plurality of search windows to be specially in the mode that replaces: for described a plurality of search windows, being the main transmission block that the search window of odd number is distributed to described user with the middle trained sequence code, is the auxiliary transmission block that the search window of even number is distributed to described user with the middle trained sequence code.
3. method according to claim 1 is characterized in that, further comprises: described user searches corresponding search window according to the middle trained sequence code of described a plurality of search windows and obtains described user's main transmission block or auxiliary transmission block.
4. each described method in 3 according to claim 1 is characterized in that, the quantity of described a plurality of search windows is at least 2.
5. the middle trained sequence code distribution system of descending stream transmission in the MIMO mode, wherein, described descending double fluid comprises the transport stream of main transmission block and the transport stream of auxiliary transmission block, it is characterized in that, described system comprises:
The first distribution module is used for the user of current time slots is distributed respectively a plurality of search windows, and wherein, each search window is corresponding to a middle trained sequence code;
The second distribution module, be used in the mode that replaces described a plurality of search windows being distributed to main transmission block and auxiliary transmission block corresponding to described user, and for described each search window, configure in the middle of it training sequence code with to the main transmission block of its distribution or the corresponding relation of auxiliary transmission block, wherein, each search window is distributed a main transmission block or an auxiliary transmission block.
6. system according to claim 5, it is characterized in that, described the second distribution module distributes the processing of described a plurality of search windows to be specially in the mode that replaces: for described a plurality of search windows, being the main transmission block that the search window of odd number is distributed to described user with the middle trained sequence code, is the auxiliary transmission block that the search window of even number is distributed to described user with the middle trained sequence code.
7. system according to claim 5 is characterized in that, further comprises:
The recipient is used for searching corresponding search window and obtaining described user's main transmission block or auxiliary transmission block according to the middle trained sequence code of described a plurality of search windows.
8. each described system in 7 according to claim 5 is characterized in that, the quantity of described a plurality of search windows is at least 2.
CN 200810092889 2008-05-07 2008-05-07 Method and system for distributing downstream double-current transmitted Midamble codes in multiple input multiple output (MIMO) mode Expired - Fee Related CN101577570B (en)

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1540900A (en) * 2003-10-31 2004-10-27 大唐移动通信设备有限公司 Transmitting set and receiving set of multiple antenna communication system under time division duplexing mode, and method
CN1756124A (en) * 2004-09-27 2006-04-05 大唐移动通信设备有限公司 Method for transmitting code channel information using training sequence in time-division duplex multi-antenna system
CN101147351A (en) * 2005-03-24 2008-03-19 松下电器产业株式会社 MIMO transmitting device and MIMO transmitting method

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1540900A (en) * 2003-10-31 2004-10-27 大唐移动通信设备有限公司 Transmitting set and receiving set of multiple antenna communication system under time division duplexing mode, and method
CN1756124A (en) * 2004-09-27 2006-04-05 大唐移动通信设备有限公司 Method for transmitting code channel information using training sequence in time-division duplex multi-antenna system
CN101147351A (en) * 2005-03-24 2008-03-19 松下电器产业株式会社 MIMO transmitting device and MIMO transmitting method

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