CN101645731B - Method for allocating transmission modes - Google Patents
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- CN101645731B CN101645731B CN 200810117872 CN200810117872A CN101645731B CN 101645731 B CN101645731 B CN 101645731B CN 200810117872 CN200810117872 CN 200810117872 CN 200810117872 A CN200810117872 A CN 200810117872A CN 101645731 B CN101645731 B CN 101645731B
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Abstract
The invention discloses a method for allocating transmission modes, which comprises that: a base station allocates a time slot for user equipment UE currently requesting scheduling; the base station judges whether a non-multi-input multi-output system UE exists in the current transmission time slot allocated to the UE requesting the scheduling, and if so, the transmission mode of the UE is determined to be a non-multi-input multi-output system transmission mode, otherwise, the transmission mode of the UE is determined to be a corresponding MIMO system transmission mode according to the known data stream allocation information; the base station sends a data frame to the UE according to the determined transmission mode; and when the UE is the MIMO system UE, the transmission mode determined by the base station is determined to be the MIMO system transmission mode or the non MIMO system transmission mode through the number of shift codes of blind training sequences in a training sequence domain corresponding to the data frame or in the transmission mode corresponding to an HS-SCCH channel. In a TDD MIMO system where the single-stream transmission MIMO system UE and the non MIMO system UE multiplex the same time slot, the single-stream transmission MIMO system UE can determine the transmission mode thereof determined by the base station.
Description
Technical field
The present invention relates to data transmission technology, particularly relate to a kind of collocation method of transmission means.
Background technology
Synchronous code division multiple access accessed in (TD-SCDMA) system and did not support MIMO (multiple-input and multiple-output) technology the existing time-division, and all descending time slots all use the transmission means of non-mimo system to carry out transfer of data.In time division way multiple-input and multiple-output (TDD MIMO) system, downlink high-speed shared control channel (HS-PDSCH) adopts single current or double fluid to transmit, subscriber equipment (UE) needs two reception antennas of configuration to support descending MIMO, like this, UE can adopt the single current of mimo system or the transmission means of double fluid to carry out transfer of data.
The transmission means of non-mimo system is different from the transmission means of mimo system, and both main distinctions are:
In the transmission means of non-mimo system, the generating mode of employed training sequence-spreading code mapping table is: with
Be the unit side-play amount, a basic training sequence is carried out cyclic shift, obtain K training sequence deviation code m
1..., m
i..., m
K, and all spreading codes are divided into the K subset; K training sequence deviation code is corresponding one by one with K spreading code subset.
In the single current or double-stream mode transmission mode of mimo system, the generating mode of employed training sequence-spreading code mapping table is: with
Be the unit side-play amount, a basic training sequence is carried out cyclic shift, obtain 2K training sequence deviation code m
1..., m
i..., m
2K, wherein, m
iWith m
I+1Between side-play amount be spaced apart
1≤i≤2K-1, K are that system is the training sequence deviation yardage of each virtual-antenna port assignment; 2K training sequence deviation code is divided into two groups, two groups of training sequence deviation codes are distributed to respectively two virtual-antenna ports; All spreading codes are divided into the K subset; K training sequence deviation code of each virtual-antenna port is corresponding one by one with K spreading code subset.
In existing TDD mimo system, consider the compatibility to non-mimo system UE, usually come the time interval resource of configuration-system with MIMO time slot and non-MIMO time slot.All UE are MIMO UE in the MIMO time slot, adopt single current or the double-current mode of mimo system to carry out transfer of data; All UE are non-MIMO UE in the non-MIMO time slot, adopt the transmission means among the existing TD-SCDMA to carry out transfer of data.Because time interval resource and transmission means are one to one, the transmission means that every type UE disposes only has a kind of, therefore namely knows the transmission means of oneself by the time slot allocation information in the High-Speed Shared Control Channel (HS-SCCH) in the UE side.But, because the method for above-mentioned differentiation MIMO time slot and non-MIMO time slot, the time slot scheduling of dissimilar UE is limited, be unfavorable for the flexible allocation of time interval resource.
For this reason, proposed the mimo system UE and the non-mimo system UE repeatedly using same time slot that carry out single-stream transmission by making in the existing research method, realized the effective utilization to time interval resource, to improve the flexibility of distributing slot resources.Like this, when the mimo system UE that carries out single-stream transmission and non-mimo system UE repeatedly using same time slot, the mimo system UE of single-stream transmission need to adopt the transmission means of non-mimo system, then can adopt the single-stream transmission mode of mimo system when the mimo system UE that carries out single-stream transmission and mimo system UE repeatedly using same time slot.That is to say that the transmission means of carrying out the mimo system UE employing of single-stream transmission is not unique, therefore, UE need to determine that the base station is its transmission means of determining.But, because HS-SCCH does not carry the transmission mode type information, thereby so that hint obliquely under the prerequisite of relation not setting up time interval resource and transmission mode static state, the mimo system UE that carries out single-stream transmission can't obtain by HS-SCCH the transmission means of oneself, thereby can't determine that the base station is that its transmission means of determining is the transmission means of non-mimo system or the transmission means of mimo system.At present, not yet propose to overcome the collocation method of the transmission means of the problems referred to above.
Summary of the invention
In view of this, main purpose of the present invention is to provide a kind of collocation method of transmission means, the mimo system UE that the method can make single-stream transmission determines that the base station is its transmission means of determining in the TDD mimo system of the mimo system UE of single-stream transmission and non-mimo system UE repeatedly using same time slot.
In order to achieve the above object, the technical scheme of the present invention's proposition is:
A kind of collocation method of transmission means may further comprise the steps:
The base station is that the user equipment (UE) of current request scheduling distributes time slot;
The base station judges in the current transmission time slot of distributing to described request scheduling UE whether have non-multiple-input and multiple-output mimo system UE, if exist, determines that then the transmission means of described UE is the transmission means of non-mimo system; Otherwise, according to the data flow configuration information of known described UE in mimo system, determine that the transmission means of described UE is the transmission means of corresponding mimo system;
It is in advance the high-speed shared control channel HS-SCCH channel that described UE distributes that the base station utilizes, and sends fixed schedule information to described UE;
The base station sends to described UE according to determined transmission means with Frame;
When described UE is mimo system UE, by blind check training sequence deviation code number in training sequence territory corresponding to the described Frame that receives or utilize transmission means corresponding to described HS-SCCH channel, determine that the determined transmission means in base station is mimo system transmission means or non-mimo system transmission means; When described transmission means is the mimo system transmission means, determine the data flow configuration information of described UE in mimo system according to described schedule information, determine the transmission means of the determined mimo system in base station according to described data flow configuration information.
Preferably, described according to the data flow configuration information of known described UE in mimo system, the transmission means of determining described UE is that the transmission means of the mimo system of correspondence comprises:
When the default data flow configuration information of described UE in mimo system was single current, the transmission means of determining described UE was the single-stream transmission mode of mimo system;
When the default data flow configuration information of described UE in mimo system was double fluid, the transmission means of determining described UE was the stream transmission mode of mimo system.
Preferably, when the transmission means of described UE was the single-stream transmission mode of mimo system, described base station sent to described UE according to determined transmission means with Frame and comprises:
Select a virtual-antenna port to carry the data that described UE need to send from two virtual-antenna ports of mimo system, according to the training sequence-spreading code mapping table that in advance be spreading code on the selected virtual-antenna port of described UE distribution and known mimo system, determine the training sequence deviation code that described UE uses at selected virtual-antenna port, described data and the described training sequence deviation code of shape-endowing weight value by selected virtual-antenna port after to spread spectrum is weighted and obtains described Frame, and utilizes selected virtual-antenna port that described Frame is issued described UE;
Preferably, when the transmission means of described UE was the single-stream transmission mode of mimo system, described base station sent to described UE according to determined transmission means with Frame and comprises:
According to the training sequence-spreading code mapping table that in advance be spreading code on two virtual-antenna ports of described UE distribution and known mimo system, determine the training sequence deviation code that described UE uses respectively on two virtual-antenna ports, carrying need to send to the identical data of described UE on each virtual-antenna port, on each virtual-antenna port, respectively described data are carried out spread spectrum, obtain spread spectrum data, utilize the shape-endowing weight value of each virtual-antenna port that described spread spectrum data and the corresponding training sequence deviation code that each virtual-antenna port carries is weighted, obtain described Frame, and on two virtual-antenna ports, described Frame is sent to described UE;
Preferably, when the transmission means of described UE was the stream transmission mode of mimo system, described base station sent to described UE according to determined transmission means with Frame and comprises:
Determine the training sequence deviation code that described UE uses respectively according to the training sequence of the spreading code on two virtual-antenna ports that distribute for described UE in advance and known mimo system-spreading code mapping table on two virtual-antenna ports, carry respectively the different pieces of information that need to send to described UE on each virtual-antenna port, on each virtual-antenna port, the data of separately carrying are carried out spread spectrum, obtain spread spectrum data, utilize the shape-endowing weight value of each virtual-antenna port that described spread spectrum data and the corresponding training sequence deviation code that each virtual-antenna port carries is weighted, obtain described Frame, and on two virtual-antenna ports, described Frame is sent to described UE.
Preferably, the building method of the training sequence of described mimo system-spreading code mapping table is:
With
Be the unit side-play amount, a basic training sequence is carried out cyclic shift, obtain 2K training sequence deviation code m
1..., m
i..., m
2K, wherein, m
iWith m
I+1Between side-play amount be spaced apart
1≤i≤2K-1, K are that system is the training sequence deviation yardage of each virtual-antenna port assignment; Parity according to training sequence deviation code sequence number is divided into two groups of m with 2K training sequence deviation code
1, m
3..., m
2K-1And m
2, m
4..., m
2K, two groups of training sequence deviation codes are distributed to respectively two virtual-antenna ports; All spreading codes are divided into the K subset; K training sequence deviation code of each virtual-antenna port is corresponding one by one with K spreading code subset.
Preferably, when described UE is mimo system UE, described UE is by blind check training sequence deviation code number in training sequence territory corresponding to the described Frame that receives or utilize transmission means corresponding to described HS-SCCH channel, determine that the determined transmission means in base station is that the mimo system transmission means also is non-mimo system transmission means, comprising:
Described UE carries out blind check to training sequence deviation code number in training sequence territory corresponding to the described Frame that receives; Judge that whether training sequence deviation code number P that blind check obtains is less than Z, if, determine that then described transmission means is the transmission means of non-mimo system, otherwise determine that described transmission means is the transmission means of mimo system, wherein, K≤Z≤NK, K are the training sequence number that disposes on the virtual-antenna port, N is the virtual-antenna port number, and Z is default critical parameters;
Perhaps, described UE is by monitoring two groups of HS-SCCH channels distributing in advance oneself, determine to send to the described HS-SCCH channel of own schedule information, according to default HS-SCCH channel and transmission means mapping ruler, determine transmission means corresponding to described HS-SCCH channel, know that according to described transmission means the base station is that its transmission means of determining is mimo system transmission means or non-mimo system transmission means, wherein, the collocation method of described HS-SCCH channel and transmission means mapping ruler is:
Base station or radio network controller in HS-SCCH Channel Sharing resource pool for each UE distributes two groups of HS-SCCH channels, wherein, the transmission means of the corresponding mimo system of first group of HS-SCCH channel, the transmission means of second group of corresponding non-mimo system of HS-SCCH channel; When the base station determines that the transmission means of UE is the transmission means of non-mimo system, utilize first group of HS-SCCH channel to send schedule information to UE, when the base station determines that the transmission means of UE is the transmission means of mimo system, utilize second group of HS-SCCH channel to send schedule information to UE; System notifies the dividing mode of two groups of HS-SCCH to UE by high-level signaling indication information or default default configuration information.
Preferably, the training sequence of described known mimo system-spreading code mapping table is divided into two groups of m according to the parity of training sequence deviation code sequence number with 2K training sequence deviation code when structure
1, m
3..., m
2K-1And m
2, m
4..., m
2K, two groups of training sequence deviation codes are distributed to respectively two virtual-antenna ports;
Described UE determines further to comprise after the determined transmission means step in base station:
When the transmission means of described UE is the transmission means of mimo system, described UE utilizes the training sequence deviation code of the described Frame that receives to carry out channel estimating, obtain an equivalent channel estimated matrix, carry out the selection of mimo system single current or stream transmission mode according to described channel estimate matrix;
By feedback information single double-current selection result is fed back to the base station as the mimo system list double fluid configuration information of recommending.
Preferably, described feedback information further comprises the modulation system of recommendation and the data block size information of recommendation.
Preferably, when the mimo system list double fluid configuration information of recommending in the described feedback information is double fluid, the modulation system information of described recommendation is by recommending the indication of modulation intelligence RMF field, and described recommending data block size information is by the data block size RTBS field indication of recommending; When the mimo system list double fluid configuration information of recommending was single current, the modulation system information of described recommendation and the data block size information of described recommendation were indicated by the RTBS field.
Preferably, when the mimo system list double fluid configuration information of recommending in the described feedback information was double fluid, described RTBS field comprised N
2Individual bit, N wherein
2/ 2+X bit is used to indicate the recommending data block size with higher channel gain virtual-antenna port, remaining N
2/ 2-X bit is used to indicate the recommending data block size of the virtual-antenna port with low channel gain, and wherein, X is non-homogeneous adjustment coefficient, and the span of X is 0≤X≤N
2/ 2.
Preferably, the form shown in the table 1 that is combined as of described RMF field and described RTBS field:
Table 1
Wherein, the RMF field comprises two bits, and the RTBS field comprises N
2Individual bit; Value apportion in RMF described in the table 1 row represents four kinds of values of RMF, and not only to have indicated transmission means be stream transmission to the RMF field but also indicate each to flow the modulation system that adopts when RMF value is 00,01,10; Only to indicate transmission means be single-stream transmission to the RMF field when the RMF value is 11; The modulation system of described single current is by the indication of the N2-Y bit in the RTBS field, and being used for the bit number that the index information of the recommending data block size of Index List data flow takies during single-stream transmission is Y, and the modulation system that is used to indicate single current takies residue N
2-Y bit, Y are 0＜Y≤N
2
In the collocation method of the transmission means that the present invention proposes, for mimo system UE, can be two groups of HS-SCCH channels of its distribution by monitoring the base station, HS-SCCH channel and transmission means mapping ruler according to systemic presupposition, determine that the base station sends the transmission means corresponding to HS-SCCH channel of schedule information to it, perhaps by blind check training sequence deviation code number in the training sequence territory of the described Frame that receives, the transmission means of determining the determined transmission means in base station and be mimo system also is the transmission means of non-mimo system.Therefore, in the TDD mimo system of the mimo system UE of single-stream transmission and non-mimo system UE repeatedly using same time slot, the mimo system UE that carries out single-stream transmission utilizes the present invention can know that the base station is its transmission means of determining.
Description of drawings
Fig. 1 is flow chart of the present invention;
Fig. 2 is the method flow diagram of the embodiment of the invention one.
Embodiment
For making the purpose, technical solutions and advantages of the present invention clearer, the present invention is described in further detail below in conjunction with the accompanying drawings and the specific embodiments.
Main thought of the present invention is, the base station is at first by judging the transmission means that whether exists non-mimo system UE to determine to be scheduled in this time slot UE in the current scheduling time slot, namely when having non-mimo system UE in the time slot, the transmission means of UE of then determining to be scheduled in this time slot is the transmission means in the non-mimo system, when not having non-mimo system UE in the time slot, the transmission means of the UE that then is scheduled in definite this time slot is single current or the double-current transmission means in the non-mimo system; Afterwards, for mimo system UE, be two groups of HS-SCCH channels of its distribution by monitoring the base station, HS-SCCH channel and transmission means mapping ruler according to systemic presupposition, determine that the base station sends the transmission means corresponding to HS-SCCH channel of schedule information to it, perhaps by blind check training sequence deviation code number in the training sequence territory of the described Frame that receives, the transmission means of determining the determined transmission means in base station and be mimo system also is the transmission means of non-mimo system, then according to the data flow configuration information of described UE in mimo system, know the determined concrete transmission means in base station, thereby so that by the present invention, the mimo system UE that carries out single-stream transmission can determine the determined transmission means in base station.
Fig. 1 is the flow chart of the inventive method.As shown in Figure 1, the inventive method mainly comprises:
Step 101, base station are that the UE of current request scheduling distributes time slot.
This step is to distribute time slot for the request scheduling UE that determines to be scheduled.
In actual applications, when system carries out time slot allocation, usually only with mimo system UE and the non-mimo system UE repeatedly using same time slot of single-stream transmission, the mimo system UE of multithread transmission will be not can with non-mimo system UE repeatedly using same time slot.
Step 102, base station judge in the current transmission time slot of distributing to described request scheduling UE whether have non-mimo system UE, if exist, determine that then the transmission means of described UE is the transmission means of non-mimo system; Otherwise, according to the data flow configuration information of known described UE in mimo system, determine that the transmission means of described UE is the transmission means of corresponding mimo system.
Here, in actual applications, the transmission means of described mimo system comprises single-stream transmission and n flow transmission, wherein, n is less than or equal to N, and N is the virtual-antenna port number in the mimo system, the data flow configuration information in the corresponding mimo system comprise single current, double fluid ..., N stream etc.When the data flow configuration information of known described UE in mimo system is multithread, because system forbids the UE of multithread transmission and the UE multiplexing time slot of non-mimo system usually in actual applications, like this, its transmission means only is the transmission means of the specified a kind of mimo system of the known data flow configuration information of described UE in mimo system.
It is in advance the HS-SCCH channel that described UE distributes that step 103, base station utilize, and sends fixed schedule information to described UE.
This step, can be according to known HS-SCCH channel and transmission means mapping ruler, select one group of HS-SCCH channel corresponding to determined transmission means, send schedule information to UE, so that after this UE is by monitoring the numbering of described HS-SCCH channel, know that the determined transmission means in base station is that the transmission means of mimo system also is the transmission means of non-mimo system.
Step 104, base station send to described UE according to determined transmission means with Frame.
Step 105, when described UE is mimo system UE, described UE is by blind check training sequence deviation code number in training sequence territory corresponding to the described Frame that receives or utilize transmission means corresponding to described HS-SCCH channel, determines that the determined transmission means in base station is mimo system transmission means or non-mimo system transmission means; When described transmission means is the mimo system transmission means, determine the data flow configuration information of described UE in mimo system according to described schedule information, according to described data flow configuration information determine the base station the transmission means of definite mimo system be the transmission means of mimo system or the transmission means of non-mimo system.
Here, determine that the determined transmission means in base station is that the concrete grammar of mimo system transmission means or non-mimo system transmission means can have two kinds:
Method one: described UE carries out blind check to training sequence deviation code number in training sequence territory corresponding to the described Frame that receives; Judge that training sequence deviation code number P that blind check obtains whether less than Z, if so, determines that then described transmission means is the transmission means of non-mimo system, otherwise determines that described transmission means is the transmission means of mimo system.
Wherein, K≤Z≤NK, K are the training sequence number that disposes on the virtual-antenna port, and N is the virtual-antenna port number, and Z is default critical parameters.
Here the different characteristics of training sequence deviation code number that to be the transmission means of utilizing non-mimo system distribute on a time slot with the mimo system transmission means, be that the former is K, and the latter is 2K, and whether the training sequence deviation code number P that obtains according to blind check determines that greater than K described transmission means is that the transmission means of mimo system also is the transmission means of non-mimo system.Under desirable state, the training sequence deviation code number P that institute's blind check obtains should be K or 2K, because in the actual application environment, there is situation about disturbing, the span of the training sequence deviation code number P that institute's blind check obtains can not be that these two fixing values are K or 2K, but has two intervals.For example, when the surrounding environment interference is larger, in situation about transmitting according to non-mimo system transmission means, the training sequence deviation code number P that institute's blind check is arrived may be more than K, in other cases, in the situation about transmitting according to the mimo system transmission means, the training sequence deviation code number P that blind check is arrived also may be less than 2K.Therefore,, introduced critical parameters Z here, Z and P are compared, in actual applications, system can arrange different values to these critical parameters Z according to different applied environments, with the flexibility of raising method.
Method two is:
Described UE is by monitoring two groups of HS-SCCH channels distributing in advance oneself, determine to send to the described HS-SCCH channel of own schedule information, according to default HS-SCCH channel and transmission means mapping ruler, determine transmission means corresponding to described HS-SCCH channel, know that according to described transmission means the base station is that its transmission means of determining is mimo system transmission means or non-mimo system transmission means
Wherein, the collocation method of described HS-SCCH channel and transmission means mapping ruler is:
Base station or radio network controller in HS-SCCH Channel Sharing resource pool for each UE distributes two groups of HS-SCCH channels, wherein, the transmission means of the corresponding mimo system of first group of HS-SCCH channel, the transmission means of second group of corresponding non-mimo system of HS-SCCH channel; When the base station determines that the transmission means of UE is the transmission means of non-mimo system, utilize first group of HS-SCCH channel to send schedule information to UE, when the base station determines that the transmission means of UE is the transmission means of mimo system, utilize second group of HS-SCCH channel to send schedule information to UE; System notifies the dividing mode of two groups of HS-SCCH to UE by high-level signaling indication information or default default configuration information.
By method two, can be implemented under the prerequisite that does not increase physical layer overhead, the determined mimo system transmission means in base station or non-mimo system transmission means information are notified to mimo system UE.
Fig. 2 is the flow chart of the embodiment one of the inventive method.Among the embodiment one, TDD mimo system employing eight enters the antenna technology of scene 2, the virtual-antenna port number is two, different virtual-antenna ports is to utilize different antenna shape-endowing weight value differences, the transmission means of mimo system comprises single-stream transmission and stream transmission dual mode, accordingly, the data flow configuration information of mimo system comprises single current and two kinds of configuration informations of double fluid.As shown in Figure 2 described, embodiment one comprises the steps:
Step 201, base station are that the UE of current request scheduling distributes time slot.
Step 202, base station judge in the current transmission time slot of distributing to described request scheduling UE whether have non-mimo system UE, if exist, then execution in step 203; Otherwise execution in step 204.
Step 203, determine that the transmission means of described UE is the transmission means of non-mimo system, execution in step 205.
Step 204, according to the data flow configuration information of known described UE in mimo system, the transmission means of determining described UE is single current or the stream transmission mode of mimo system.
The concrete grammar of this step is:
When the default data flow configuration information of described UE in mimo system was single current, the transmission means of determining described UE was the single-stream transmission mode of mimo system;
When the default data flow configuration information of described UE in mimo system was double fluid, the transmission means of determining described UE was the stream transmission mode of mimo system.
It is in advance the HS-SCCH channel that described UE distributes that step 205, base station utilize, and sends fixed schedule information to described UE.
In this step, UE for mimo system, the base station is at first according to HS-SCCH channel and transmission means mapping ruler, from in advance be one group of HS-SCCH channel of selection two groups of HS-SCCH channels distributing of described UE, this group HS-SCCH channel is corresponding with the determined described transmission means in base station, and then utilizes selected HS-SCCH channel to send fixed schedule information to described UE.Like this, by this step, realized under the prerequisite that does not increase physical layer overhead, the determined mimo system transmission means in base station or non-mimo system transmission means information have been notified to mimo system UE.
UE for non-mimo system then realizes that by existing method this step gets final product.
Step 206, base station send to described UE according to determined transmission means with Frame.
In actual applications, when the transmission means of the described UE that determines is the single-stream transmission mode of mimo system, can adopt dual mode to realize:
First kind of way is: select a virtual-antenna port to carry the data that described UE need to send from two virtual-antenna ports of mimo system, according to the training sequence-spreading code mapping table that in advance be spreading code on the selected virtual-antenna port of described UE distribution and known mimo system, determine the training sequence deviation code that described UE uses at selected virtual-antenna port, described data and the described training sequence deviation code of shape-endowing weight value by selected virtual-antenna port after to spread spectrum is weighted and obtains described Frame, and utilizes selected virtual-antenna port that described Frame is issued described UE;
The second way is: according to the training sequence of the spreading code on two virtual-antenna ports that distribute for described UE in advance and known mimo system-spreading code mapping table, determine the training sequence deviation code that described UE uses respectively on two virtual-antenna ports, carrying need to send to the identical data of described UE on each virtual-antenna port, on each virtual-antenna port, respectively described data are carried out spread spectrum, obtain spread spectrum data, utilize the shape-endowing weight value of each virtual-antenna port that described spread spectrum data and the corresponding training sequence deviation code that each virtual-antenna port carries is weighted, obtain described Frame, and on two virtual-antenna ports, described Frame is sent to described UE.
In the above-mentioned second way, system all sends the training sequence deviation code that described UE uses at virtual-antenna port separately on two virtual-antenna ports, like this, described UE can utilize the training sequence territory of the Frame that receives at two virtual-antenna ports to carry out channel estimating, utilize channel estimation results to carry out the selection of single double fluid, the data flow configuration information that uses during to transfer of data next time with direct base station is configured.This will overcome the undesirable problem of the existing selection result of technical scheme that is used for carrying out single/double fluid selection in the existing TDD system.
Because UE can't utilize descending channel information to realize that single data stream is to the switching selection of dual data stream in the existing TDD mimo system, existing single double fluid selects technical scheme can only utilize the reciprocity of up-downgoing channel, carries out list/double fluid by the base station according to uplink channel estimation information and selects.But because that up-downgoing is disturbed is asymmetric, the uplink channel estimation information that the base station utilizes can not reflect the situation of down channel accurately, and this will affect the correctness of the descending list of on this basis realization/double-current selection result.Therefore, preferably, present embodiment is selected second way performing step 206.
When the transmission means of described UE is the stream transmission mode of mimo system, determine the training sequence deviation code that described UE uses respectively according to the training sequence of the spreading code on two virtual-antenna ports that distribute for described UE in advance and known mimo system-spreading code mapping table on two virtual-antenna ports, carry respectively the different pieces of information that need to send to described UE on each virtual-antenna port, on each virtual-antenna port, the data of separately carrying are carried out spread spectrum, obtain spread spectrum data, utilize the shape-endowing weight value of each virtual-antenna port that described spread spectrum data and the corresponding training sequence deviation code that each virtual-antenna port carries is weighted, obtain described Frame, and on two virtual-antenna ports, described Frame is sent to described UE.
In the present embodiment, the building method of the training sequence of described mimo system-spreading code mapping table is:
With
Be the unit side-play amount, a basic training sequence is carried out cyclic shift, obtain 2K training sequence deviation code m
1..., m
i..., m
2K, wherein, m
iWith m
I+1Between side-play amount be spaced apart
1≤i≤2K ... 1, K is that system is the training sequence deviation yardage of each virtual-antenna port assignment; Parity according to training sequence deviation code sequence number is divided into two groups of m with 2K training sequence deviation code
1, m
3..., m
2K-1And m
2, m
4..., m
2K, two groups of training sequence deviation codes are distributed to respectively two virtual-antenna ports; All spreading codes are divided into the K subset; K training sequence deviation code of each virtual-antenna port is corresponding one by one with K spreading code subset.
By adopting said method to obtain the advantage that training sequence-the spreading code mapping table has be: by according to parity 2K training sequence deviation code being divided into two groups, so that the training sequence deviation code that disposes on one of them virtual-antenna port can be identical with the training sequence deviation code that according to primary standard is non-mimo system training sequence-spreading code mapping table configuration; In addition, the training sequence deviation code that disposes on two virtual-antenna ports is identical, namely all disposes K training sequence deviation code on each virtual-antenna port, like this, just can directly utilize the K value layoutprocedure of primary standard that the K value is notified to UE, and need not this process is made an amendment again.
Need to prove, in actual applications, can also utilize the building method of the training sequence of existing other mimo systems-spreading code mapping table to realize, repeat no more herein.
Step 207, when described UE is mimo system UE, described UE is by monitoring two groups of HS-SCCH channels distributing in advance oneself, the described HS-SCCH channel of determining to send to own schedule information corresponding transmission means in default HS-SCCH channel and transmission means mapping ruler determines that according to the transmission means of described correspondence the determined transmission means in base station is mimo system transmission means or non-mimo system transmission means.
In this step, the UE of mimo system is by the numbering at HS-SCCH channel monitoring scheduling HS-SCCH, obtain the transmission means information of oneself, thereby realized under the prerequisite that does not increase physical layer overhead, made the mimo system UE that carries out single-stream transmission know that its transmission means is that the mimo system transmission means also is non-mimo system transmission means.
Step 208, judge that whether described transmission means is the mimo system transmission means, if it is changes step 209 over to.
Step 209, described UE determine the data flow configuration information of described UE in mimo system according to the described schedule information that listens to, and determine the transmission means of the determined mimo system in base station according to described data flow configuration information.
In this step, described UE is according to determined described data flow configuration information, comes the concrete mode of the transmission means of the described mimo system that obtains in the further determining step 207, is single-stream transmission or the stream transmission of mimo system.
Here, specifically how according to the described schedule information that listens to, determine that the data flow configuration information of described UE in mimo system is conventionally known to one of skill in the art, repeat no more herein.
In addition, in actual applications, adopt the second way to realize utilizing the single-stream transmission mode of mimo system Frame to be sent on the basis of described UE in step 206, the UE of mimo system can also carry out channel estimating according to the Frame that receives after step 209, utilize channel estimation results to carry out the selection of single double fluid, the data flow configuration information that uses when coming direct base station to transfer of data next time is configured.
Concrete grammar is as follows:
When the transmission means of described UE was the transmission means of mimo system, described UE utilized the training sequence deviation code of the described Frame that receives to carry out channel estimating, obtains an equivalent channel estimated matrix.
Carry out the selection of mimo system single current or stream transmission mode according to described channel estimate matrix.
By feedback information single double-current selection result is fed back to the base station as the mimo system list double fluid configuration information of recommending.
Here, described feedback information also further comprises the modulation system of recommendation and the data block size information of recommendation.
When the mimo system list double fluid configuration information of recommending in the described feedback information was double fluid, the modulation system information of described recommendation was by recommending the indication of modulation intelligence RMF field, and described recommending data block size information is by the big or small RTBS field indication of the data block of recommending; When the mimo system list double fluid configuration information of recommending was single current, the modulation system information of described recommendation and the data block size information of described recommendation were indicated by the RTBS field.
When the mimo system list double fluid configuration information of recommending in the described feedback information was double fluid, described RTBS field comprised N
2Individual bit, N wherein
2/ 2+X bit is used to indicate the recommending data block size with higher channel gain virtual-antenna port, remaining N
2/ 2-X bit is used to indicate the recommending data block size of the virtual-antenna port with low channel gain, and wherein, X is non-homogeneous adjustment coefficient, and the span of X is 0≤X≤N
2/ 2.
The combination of described RMF field and described RTBS field is specifically as follows form shown in the table 1:
Table 1
Wherein, the RMF field comprises two bits, and the RTBS field comprises N
2Individual bit; Value apportion in RMF described in the table 1 row represents four kinds of values of RMF, and not only to have indicated transmission means be stream transmission to the RMF field but also indicate each to flow the modulation system that adopts when RMF value is 00,01,10; Only to indicate transmission means be single-stream transmission to the RMF field when the RMF value is 11; The modulation system of described single current is by the indication of the N2-Y bit in the RTBS field, and being used for the bit number that the index information of the recommending data block size of Index List data flow takies during single-stream transmission is Y, and the modulation system that is used to indicate single current takies residue N
2-Y bit, Y are 0＜Y≤N
2
Can make described feedback message take less signal resource by table 1.
In sum, more than be preferred embodiment of the present invention only, be not for limiting protection scope of the present invention.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 (11)
1. the collocation method of a transmission means is characterized in that, the method may further comprise the steps:
The base station is that the user equipment (UE) of current request scheduling distributes time slot;
The base station judges in the current transmission time slot of distributing to described request scheduling UE whether have non-multiple-input and multiple-output mimo system UE, if exist, determines that then the transmission means of described UE is the transmission means of non-mimo system; Otherwise, according to the data flow configuration information of known described UE in mimo system, determine that the transmission means of described UE is the transmission means of corresponding mimo system;
It is in advance the high-speed shared control channel HS-SCCH channel that described UE distributes that the base station utilizes, and sends fixed schedule information to described UE;
The base station sends to described UE according to determined transmission means with Frame;
When described UE is mimo system UE, by blind check training sequence deviation code number in training sequence territory corresponding to the described Frame that receives or utilize transmission means corresponding to described HS-SCCH channel, determine that the determined transmission means in base station is mimo system transmission means or non-mimo system transmission means; When described transmission means is the mimo system transmission means, determine the data flow configuration information of described UE in mimo system according to described schedule information, determine the transmission means of the determined mimo system in base station according to described data flow configuration information;
Wherein, the determined transmission means in described definite base station is that the mimo system transmission means also is non-mimo system transmission means, comprising:
Described UE carries out blind check to training sequence deviation code number in training sequence territory corresponding to the described Frame that receives; Judge that whether training sequence deviation code number P that blind check obtains is less than Z, if, determine that then described transmission means is the transmission means of non-mimo system, otherwise determine that described transmission means is the transmission means of mimo system, wherein, K≤Z≤NK, K are the training sequence number that disposes on the virtual-antenna port, N is the virtual-antenna port number, and Z is default critical parameters;
Perhaps, described UE is by monitoring two groups of HS-SCCH channels distributing in advance oneself, determine to send to the described HS-SCCH channel of own schedule information, according to default HS-SCCH channel and transmission means mapping ruler, determine transmission means corresponding to described HS-SCCH channel, know that according to described transmission means the base station is that its transmission means of determining is mimo system transmission means or non-mimo system transmission means, wherein, the collocation method of described HS-SCCH channel and transmission means mapping ruler is:
Base station or radio network controller in HS-SCCH Channel Sharing resource pool for each UE distributes two groups of HS-SCCH channels, wherein, the transmission means of the corresponding mimo system of first group of HS-SCCH channel, the transmission means of second group of corresponding non-mimo system of HS-SCCH channel; When the base station determines that the transmission means of UE is the transmission means of non-mimo system, utilize first group of HS-SCCH channel to send schedule information to UE, when the base station determines that the transmission means of UE is the transmission means of mimo system, utilize second group of HS-SCCH channel to send schedule information to UE; System notifies the dividing mode of two groups of HS-SCCH to UE by high-level signaling indication information or default default configuration information.
2. method according to claim 1 is characterized in that, and is described according to the data flow configuration information of known described UE in mimo system, and the transmission means of determining described UE is that the transmission means of the mimo system of correspondence comprises:
When the default data flow configuration information of described UE in mimo system was single current, the transmission means of determining described UE was the single-stream transmission mode of mimo system;
When the default data flow configuration information of described UE in mimo system was double fluid, the transmission means of determining described UE was the stream transmission mode of mimo system.
3. method according to claim 2 is characterized in that, when the transmission means of described UE was the single-stream transmission mode of mimo system, described base station sent to described UE according to determined transmission means with Frame and comprises:
Select a virtual-antenna port to carry the data that described UE need to send from two virtual-antenna ports of mimo system, according to the training sequence-spreading code mapping table that in advance be spreading code on the selected virtual-antenna port of described UE distribution and known mimo system, determine the training sequence deviation code that described UE uses at selected virtual-antenna port, described data and the described training sequence deviation code of shape-endowing weight value by selected virtual-antenna port after to spread spectrum is weighted and obtains described Frame, and utilizes selected virtual-antenna port that described Frame is issued described UE.
4. method according to claim 2 is characterized in that, when the transmission means of described UE was the single-stream transmission mode of mimo system, described base station sent to described UE according to determined transmission means with Frame and comprises:
According to the training sequence-spreading code mapping table that in advance be spreading code on two virtual-antenna ports of described UE distribution and known mimo system, determine the training sequence deviation code that described UE uses respectively on two virtual-antenna ports, carrying need to send to the identical data of described UE on each virtual-antenna port, on each virtual-antenna port, respectively described data are carried out spread spectrum, obtain spread spectrum data, utilize the shape-endowing weight value of each virtual-antenna port that described spread spectrum data and the corresponding training sequence deviation code that each virtual-antenna port carries is weighted, obtain described Frame, and on two virtual-antenna ports, described Frame is sent to described UE.
5. method according to claim 2 is characterized in that, when the transmission means of described UE was the stream transmission mode of mimo system, described base station sent to described UE according to determined transmission means with Frame and comprises:
Determine the training sequence deviation code that described UE uses respectively according to the training sequence of the spreading code on two virtual-antenna ports that distribute for described UE in advance and known mimo system-spreading code mapping table on two virtual-antenna ports, carry respectively the different pieces of information that need to send to described UE on each virtual-antenna port, on each virtual-antenna port, the data of separately carrying are carried out spread spectrum, obtain spread spectrum data, utilize the shape-endowing weight value of each virtual-antenna port that described spread spectrum data and the corresponding training sequence deviation code that each virtual-antenna port carries is weighted, obtain described Frame, and on two virtual-antenna ports, described Frame is sent to described UE.
6. according to claim 3,4 or 5 described methods, it is characterized in that the building method of the training sequence of described mimo system-spreading code mapping table is:
With
Be the unit side-play amount, a basic training sequence is carried out cyclic shift, obtain 2K training sequence deviation code m
1..., m
i..., m
2K, wherein, m
iWith m
I+1Between side-play amount be spaced apart
1≤i≤2K-1, K are that system is the training sequence deviation yardage of each virtual-antenna port assignment; Parity according to training sequence deviation code sequence number is divided into two groups of m with 2K training sequence deviation code
1, m
3..., m
2K-1And m
2, m
4..., m
2K, two groups of training sequence deviation codes are distributed to respectively two virtual-antenna ports; All spreading codes are divided into the K subset; K training sequence deviation code of each virtual-antenna port is corresponding one by one with K spreading code subset.
7. method according to claim 4 is characterized in that, the training sequence of described known mimo system-spreading code mapping table is divided into two groups of m according to the parity of training sequence deviation code sequence number with 2K training sequence deviation code when structure
1, m
3..., m
2K-1And m
2, m
4..., m
2K, two groups of training sequence deviation codes are distributed to respectively two virtual-antenna ports;
Described UE determines further to comprise after the determined transmission means step in base station:
When the transmission means of described UE is the transmission means of mimo system, described UE utilizes the training sequence deviation code of the described Frame that receives to carry out channel estimating, obtain an equivalent channel estimated matrix, carry out the selection of mimo system single current or stream transmission mode according to described channel estimate matrix;
By feedback information single double-current selection result is fed back to the base station as the mimo system list double fluid configuration information of recommending.
8. method according to claim 7 is characterized in that, described feedback information further comprises the modulation system of recommendation and the data block size information of recommendation.
9. method according to claim 8, it is characterized in that, when the mimo system list double fluid configuration information of recommending in the described feedback information is double fluid, the modulation system information of described recommendation is by recommending the indication of modulation intelligence RMF field, and described recommending data block size information is by the data block size RTBS field indication of recommending; When the mimo system list double fluid configuration information of recommending was single current, the modulation system information of described recommendation and the data block size information of described recommendation were indicated by the RTBS field.
10. method according to claim 9 is characterized in that, when the mimo system list double fluid configuration information of recommending in the described feedback information was double fluid, described RTBS field comprised N
2Individual bit, N wherein
2/ 2+X bit is used to indicate the recommending data block size with higher channel gain virtual-antenna port, remaining N
2/ 2-X bit is used to indicate the recommending data block size of the virtual-antenna port with low channel gain, and wherein, X is non-homogeneous adjustment coefficient, and the span of X is 0≤X≤N
2/ 2.
11. method according to claim 10 is characterized in that, the form shown in the table 1 that is combined as of described RMF field and described RTBS field:
Table 1
Wherein, the RMF field comprises two bits, and the RTBS field comprises N
2Individual bit; Value apportion in RMF described in the table 1 row represents four kinds of values of RMF, and not only to have indicated transmission means be stream transmission to the RMF field but also indicate each to flow the modulation system that adopts when RMF value is 00,01,10; Only to indicate transmission means be single-stream transmission to the RMF field when the RMF value is 11; The modulation system of described single current is by the N in the RTBS field
2-Y bit indication, being used for the bit number that the index information of the recommending data block size of Index List data flow takies during single-stream transmission is Y, the modulation system that is used to indicate single current takies residue N
2-Y bit, Y are 0＜Y≤N
2
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| CN101656587B (en) * | 2008-08-20 | 2013-01-16 | 中兴通讯股份有限公司 | Method for allocating downlink time slots and method for transmitting downlink signal |
| CN102958043A (en) * | 2011-08-19 | 2013-03-06 | 中兴通讯股份有限公司 | MIMO (multiple input multiple output) function processing method and terminal |
| JP6522522B2 (en) * | 2013-02-28 | 2019-05-29 | ▲ホア▼▲ウェイ▼技術有限公司Ｈｕａｗｅｉ Ｔｅｃｈｎｏｌｏｇｉｅｓ Ｃｏ．，Ｌｔｄ． | Data transmission and reception method and device |
| CN103744374B (en) * | 2013-12-25 | 2016-08-17 | 广州达意隆包装机械股份有限公司 | A kind of servo motor parameter automatic configuration method and system |
| GB2522046B (en) * | 2014-01-10 | 2021-08-18 | Vodafone Ip Licensing Ltd | Method for determining a transmission mode for a cell of a node of a telecommunication network |
| EP3094026B1 (en) | 2014-01-29 | 2022-11-16 | Huawei Technologies Co., Ltd. | Data transmission method and communication device |
| CN104852756B (en) * | 2014-02-19 | 2018-09-04 | 中国移动通信集团公司 | A kind of antenna mapping method, device and digital front-end |
| CN104853437B (en) * | 2014-02-19 | 2019-02-05 | 中国移动通信集团公司 | Physical Downlink Shared Channel data transferring method and baseband processing unit |
| CN105991159B (en) * | 2015-02-13 | 2019-07-02 | 中兴通讯股份有限公司 | Data transmission method and device |
| CN110831239B (en) * | 2018-08-08 | 2022-12-30 | 珠海市魅族科技有限公司 | Data transmission method, data transmission device and communication equipment |
| CN115720102A (en) * | 2021-08-24 | 2023-02-28 | 上海华为技术有限公司 | Wireless communication method, related device and equipment |
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| CN1951139A (en) * | 2004-05-04 | 2007-04-18 | Ip无线有限公司 | Signaling MIMO allocations |
| CN101217682A (en) * | 2007-01-05 | 2008-07-09 | 华为技术有限公司 | MIMO transmitting method, receiving method, system and device |
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| CN101217682A (en) * | 2007-01-05 | 2008-07-09 | 华为技术有限公司 | MIMO transmitting method, receiving method, system and device |
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