CN101677256A - Method for transmitting user type information of same time slot in time-division synchronous code-division multi-address system - Google Patents
Method for transmitting user type information of same time slot in time-division synchronous code-division multi-address system Download PDFInfo
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Abstract
The invention discloses a method for transmitting the user type information of the same time slot in a time-division synchronous code-division multi-address system, which is applied in a TD-SCDMA system adopting MIMO technology for conveniently indicating the user types of the same time slot. In the method, a base station side transmits the user type information of the same time slot to a terminalside by a descending high-speed share control channel during multi-input multi-output single-current transmission, and the user type information of the same time slot is used for representing the types of other users in the same time slot to the terminal side. By carrying the user type information of the same time slot on an HS-SCCH channel, the invention realizes the flexible dispatching of different user types in the same time slot.
Description
Technical field
The present invention relates to TD SDMA (TD-SCDMA) system, relate in particular to the method for transmitting in a kind of TDS-CDMA system with time slot user type information.
Background technology
Multiple-input and multiple-output (MIMO) technology is characterised in that transmitting set and receiver all introduced many antennas.With respect to the traditional single output of single input (SISO) system, mimo system has obtained the very big lifting of power system capacity by space diversity reception to communicate or space multiplexing technique.
In same time slot, a plurality of users can coexist.But, because the different method of salary distribution of Mid-amble sign indicating number employing under non-MIMO pattern and the MIMO pattern, so receiving terminal only according to the Mid-amble sign indicating number that receives, also can't obtain employed spread spectrum codeword information, also correctly demodulation of receiving terminal so exactly.
According to prior art, single-stream transmission user under the MIMO pattern, in theory can with the same time slot of the user of MIMO type, also can with the same time slot of the user of non-MIMO type.But for an existing system, between transmitting terminal and the receiving terminal or can only adopt MIMO single current user and MIMO single current or double-current user to coexist as same time slot, perhaps adopt MIMO single current user and non-MIMO user to coexist as same time slot, so, timeslot scheduling is flexible not enough, can't in a system, use above-mentioned two kinds of coexistence modes simultaneously, therefore be necessary this technical problem is solved.
Summary of the invention
Technical problem to be solved by this invention is to be to provide the method for a kind of transmission with time slot user type information, be applied in the TD-SCDMA system that adopts the MIMO technology, in a system, realizing MIMO single current user and MIMO user's coexistence, and and non-MIMO user this two kinds of time slot allocation patterns that coexist.
In order to solve the problems of the technologies described above, the invention provides the method for transmitting in a kind of TDS-CDMA system with time slot user type information, during the multiple-input and multiple-output single-stream transmission, base station side will send to end side with time slot user type information by downlink high-speed shared control channel, the described type that is used for other user in described end side is represented with time slot with time slot user type information.
In the aforesaid method, described type with other user of time slot can comprise multiple-input and multiple-output type and non-multiple-input and multiple-output type.
In the aforesaid method, described base station side can be provided with in described downlink high-speed shared control channel with time slot user type indication field, and is described described with time slot user type information in order to represent with time slot user type indication field.
Further, describedly can be 1 bit or 2 bits with time slot user type indication field length.
Further, described when being 1 bit with time slot user type indication field length, described base station side can be by described with time slot user type indication field, represent that respectively described type with other user of time slot is non-multiple-input and multiple-output type or does not describedly have other user with time slot, perhaps described type with other user of time slot is the multiple-input and multiple-output type.
And, described when being 2 bits with time slot user type indication field length, described base station side can be by described with time slot user type indication field, represents that respectively described type with other user of time slot is non-multiple-input and multiple-output type, multiple-input and multiple-output type or does not have other user with time slot.
Aforesaid method may further include:
Described end side is received described with after the time slot user type information, according to described with the type of time slot user type information acquisition with other user in the time slot.
Adding with time slot user type information after, receiving terminal obtains the type with each user in the time slot, just can know the method for salary distribution of the training sequence (Mid-amble sign indicating number) that the user adopts, thereby obtain the spreading code information that the user adopts according to the Mid-amble sign indicating number, to be used for follow-up application such as joint-detection.Compared with prior art, the present invention is by carrying on the HS-SCCH channel with time slot user type information, MIMO single current user and MIMO user's coexistence in the system have been realized, and with non-MIMO user this two kinds of time slot allocation patterns that coexist, realized the flexible dispatching of different user types on the same time slot.
Description of drawings
Fig. 1 is control channel transmission schematic diagram.
Fig. 2-1 is HS-SCCH channel architecture in the existing HSDPA system.
Fig. 2-2 is a HS-SCCH channel expansion structural representation under the MIMO pattern.
Fig. 3 is a terminal receiving demodulation HS-SCCH Channel Processing flow process under the MIMO pattern.
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.
Because the MIMO type of user adopts the different Mid-amble sign indicating number methods of salary distribution with non-MIMO type of user, so when the MIMO single-stream transmission, MIMO single current receiving terminal need clearly be known the type with other users of time slot, below will be referred to as with depositing the user with other users of time slot.In order to increase the flexibility of timeslot scheduling, also i.e. convenient use MIMO single current user and MIMO user's coexistence in a system, and MIMO single current user and non-MIMO user this two kinds of timeslot scheduling modes that coexist, the present invention is under the MIMO pattern during user's single-stream transmission, by increasing corresponding identification information, represent with time slot with the type of depositing the user.One embodiment of the present of invention adopt together, and time slot user type identification field identifies, the type of depositing the user with time slot is together identified with time slot user type identification field by this, make receiving terminal can obtain identical other users' of time slot type information exactly, and carry out correct demodulation in view of the above.
Because under the MIMO pattern stream transmission can only with the synchronic crack of MIMO single current or MIMO double fluid user, promptly can only with the same time slot of MIMO user, so there is not user's coexistence with non-MIMO type during the MIMO stream transmission.
Behind the using MIMO technique, transmit with time slot user type information in the TD-SCDMA system by downlink high-speed shared control channel (HS-SCCH).Be provided with one with time slot user type indication field in the HS-SCCH control channel, this field is used for identifying the type that receiving terminal is used outdoor other users of removing of a time slot, is divided into MIMO type and non-MIMO type.Receiving terminal is according to should obtaining identical other users' of time slot type, thereby guarantee the correct demodulation of receiving terminal with the value of time slot user type indication field.
Fig. 1 is a control channel transmission schematic diagram, end side (UE) is judged the data transfer mode of base station down High-Speed Physical Downlink Shared Channel (HS-PDSCH) according to the indication information of the High-Speed Shared Control Channel (HS-SCCH) of base station side (Node B) transmission, according to indication information the HS-PDSCH data are received, and carry out feedback information to base station side by high-speed shared information channel (HS-SICH).
Fig. 2-the 1st, existing high-speed downlink packet inserts the signal of HS-SCCH channel architecture in (HSDPA) system, and taking two spreading factors (SF) is 16 downlink physical code channels, wherein:
Channel code set identifier (CCS) takies 8 bits;
Time slot position information (TS) takies 5 bits;
Modulation intelligence (MF) takies 1 bit;
Transmission block size (TBS) information takies 6 bits;
Mix retransmitting (HARQ) process identification (PID) automatically, take 3 bits;
Redundancy versions (RV) information takies 3 bits;
New data block indication information (NDI) takies 1 bit;
HS-SCCH cyclic sequence sign (HSCN) takies 3 bits;
UE identifies (CRC SPECIAL), takies 16 bits.
Fig. 2-the 2nd, the HS-SCCH channel expansion structure single-stream transmission schematic diagram under the MIMO pattern, taking two spreading factors (SF) is 16 downlink physical code channels, wherein:
Channel code set identifier (CCS) takies 8 bits;
Time slot position information (TS) takies 5 bits;
Modulation intelligence (MF) takies 1 bit;
Transmission block size (TBS) information takies 6 bits;
Mix retransmitting (HARQ) process identification (PID) automatically, take 3 bits;
Redundancy versions (RV) information takies 2 bits;
With time slot user type flag information, take 2 bits or 1 bit;
HS-SCCH cyclic sequence sign (HSCN) takies 3 bits;
UE identifies (CRC SPECIAL), takies 16 bits.
Be provided with in the HS-SCCH control information with time slot user type indication field when single-stream transmission, the application example of two kinds of concrete structure configurations is below arranged, being respectively this length with time slot user type indication field is 1 bit and 2 bits.
First application example
Adopt the same time slot user type indication field of 1 bit to characterize with time slot user type information, for example:
Value is 0, characterize to deposit the user with time slot same and be non-MIMO type of user, or with time slot with not depositing the user;
Value is 1, characterizes to deposit the user with time slot same and be the MIMO type of user.
Second application example
Adopt the same time slot user type indication field of 2 bits to characterize with time slot user type information, for example:
Value is 00, characterizes to deposit the user with time slot same and be non-MIMO type of user;
Value is 11, characterizes the same user who deposits the user for the MIMO type with time slot;
Value is 01, characterizes with time slot not with depositing the user;
Value is 10, and mode bit keeps.
In above-mentioned second application example, whether receiving terminal can clearly be learnt with also having other users to exist in the time slot, and in first application example, value with time slot user type indication field is 0 o'clock, receiving terminal also can't be determined with having on earth in the time slot not with depositing the user, in this case, can solve by channel estimating.
To adopt 2 bit configuration with time slot user type information, MIMO user terminal demodulation HS-SCCH information is example, elaborates particular content of the present invention below.As shown in Figure 3, terminal receiving demodulation HS-SCCH Channel Processing flow process mainly comprises the steps: under the MIMO pattern
Step 301, user terminal are monitored all HS-SCCH channels, and the HS-SCCH channel is carried out demodulation;
Step 304 reads with time slot user type information;
Step 305 judges whether the value with time slot user type indication field is [11], is then to change step 306, otherwise changes step 307;
Step 306 is deposited the user with the active user with time slot same and is the MIMO type of user, skips to step 310;
Step 307 judges whether the value with time slot user type indication field is [00], is then to change step 308, otherwise changes step 309;
Step 308 is deposited the user with the active user with time slot same and is non-MIMO type of user, skips to step 310;
Step 309 is [01] with the value of time slot user type indication field, and current time slots with depositing the user, does not skip to step 310;
Step 310 reads the correspondence position relevant information according to the single-stream transmission structure type, skips to step 312;
Step 313 is judged non-user profile, abandons relevant information, and UE continues to monitor the HS-SCCH channel.
Need to prove that the present invention adopts together that time slot user type identification field identifies with time slot user type information, in fact, the mode that other can be used for identifying with time slot user type information all is feasible.
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 what implement in form and on the details; 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, in a kind of TDS-CDMA system transmission with the method for time slot user type information, it is characterized in that, during the multiple-input and multiple-output single-stream transmission, base station side will send to end side with time slot user type information by downlink high-speed shared control channel, the described type that is used for other user in described end side is represented with time slot with time slot user type information.
2, the method for claim 1 is characterized in that:
Described type with other user of time slot comprises multiple-input and multiple-output type and non-multiple-input and multiple-output type.
3, the method for claim 1 is characterized in that:
Described base station side is provided with in described downlink high-speed shared control channel with time slot user type indication field, and is described described with time slot user type information in order to represent with time slot user type indication field.
4, method as claimed in claim 3 is characterized in that:
Described is 1 bit or 2 bits with time slot user type indication field length.
5, method as claimed in claim 4 is characterized in that:
Described when being 1 bit with time slot user type indication field length, described base station side by described with time slot user type indication field, represent that respectively described type with other user of time slot is non-multiple-input and multiple-output type or does not describedly have other user with time slot, perhaps described type with other user of time slot is the multiple-input and multiple-output type.
6, method as claimed in claim 4 is characterized in that:
Described when being 2 bits with time slot user type indication field length, described base station side with time slot user type indication field, represents that described type with other user of time slot is non-multiple-input and multiple-output type, multiple-input and multiple-output type or does not have other user with time slot by described respectively.
7, the method for claim 1 is characterized in that, this method further comprises:
Described end side is received described with after the time slot user type information, according to described with the type of time slot user type information acquisition with other user in the time slot.
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| CN200810149323.1A CN101677256B (en) | 2008-09-17 | 2008-09-17 | Method for transmitting user type information of same time slot in time-division synchronous code-division multi-address system |
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| CN200810149323.1A CN101677256B (en) | 2008-09-17 | 2008-09-17 | Method for transmitting user type information of same time slot in time-division synchronous code-division multi-address system |
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| CN107947829A (en) * | 2017-12-27 | 2018-04-20 | 武汉拓宝科技股份有限公司 | A kind of tdd communication systems and method of combination spread spectrum and arrowband MIMO |
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| CN1947023A (en) * | 2003-11-07 | 2007-04-11 | 美商内数位科技公司 | Method for channel assignments in wireless systems |
| US7684372B2 (en) * | 2004-05-04 | 2010-03-23 | Ipwireless, Inc. | Signaling MIMO allocations |
| CN101242216A (en) * | 2007-02-06 | 2008-08-13 | 北京三星通信技术研究有限公司 | Transmission device and method for downlink control signaling in wireless communication system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107947829A (en) * | 2017-12-27 | 2018-04-20 | 武汉拓宝科技股份有限公司 | A kind of tdd communication systems and method of combination spread spectrum and arrowband MIMO |
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