CN101938339A - Feedback method and device and assignment method and device of multi-code word inter-layer switching mapping - Google Patents
Feedback method and device and assignment method and device of multi-code word inter-layer switching mapping Download PDFInfo
- Publication number
- CN101938339A CN101938339A CN2009101467636A CN200910146763A CN101938339A CN 101938339 A CN101938339 A CN 101938339A CN 2009101467636 A CN2009101467636 A CN 2009101467636A CN 200910146763 A CN200910146763 A CN 200910146763A CN 101938339 A CN101938339 A CN 101938339A
- Authority
- CN
- China
- Prior art keywords
- code word
- respective signal
- mcs
- cqi
- word respective
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Landscapes
- Mobile Radio Communication Systems (AREA)
Abstract
The invention relates to mobile communication technology, and discloses a feedback method and a feedback device of multi-code word inter-layer switching mapping. The method comprises the following steps of: selecting one code word from a plurality of code words by a signal receiving end, determining and feeding back CQI (channel quality indicator) of a corresponding signal aiming at the selected code word; eliminating interference caused by the selected code word to corresponding signals of other code words; determining the CQI of the corresponding signals of the other code words; and periodically feeding back or feeding back information used for determining the CQI of the corresponding signals of the other code words through event triggering. The embodiment of the invention also provides an assignment method and an assignment device of the multi-code word inter-layer switching mapping. By using the methods and the devices, the control channel spending can be reduced.
Description
Technical field
The present invention relates to the communication technology, be specifically related to feedback method and equipment, assigning method and equipment that a kind of many code words interlayer switches mapping.
Background technology
MIMO (Multi Input Multi Output, multiple-input, multiple-output) technology is the important breakthrough of wireless mobile communications field intelligent antenna technology, this technology can improve the capability of communication system and the availability of frequency spectrum exponentially under the situation that does not increase bandwidth, be the key technology that the third generation mobile communication system must adopt.
In mimo system, transmitting terminal can adopt the mode of SCW (Single-Codeword, single codeword) and two kinds of space division multiplexings of MCW (Multi-Codeword, many code words) to send signal.Wherein, the SCW mode is meant that transmitting terminal forms one tunnel code word (CW) to a plurality of signals that will send, and adopts identical code modulation mode to carry out coded modulation and transmission; The MCW mode is meant that transmitting terminal forms two-way or multichannel code word to a plurality of signals that will send, and adopts two or more code modulation mode to carry out coded modulation and transmission respectively.
With the two-way code word is example, and according to the regulation of existing LTE standard, the code word after the two-way coded modulation can be mapped to 2,3 or 4 layers, and concrete mapping relations are respectively as Fig. 1, Fig. 2 and shown in Figure 3.
By Fig. 1, Fig. 2 and Fig. 3 as can be seen, during the mapping of 2 code word to 2 layers, the length of CW1 and the equal in length of CW2; During the mapping of 2 code word to 3 layers, the length of CW2 is 2 times of CW1 length; During the mapping of 2 code word to 4 layers, the length of CW1 and the equal in length of CW2.In this mapping mode, each code word can only be mapped on the specific layer, and promptly the code word on each road all is independently, and the channel at the code word place on each road also is relatively independent.
Under this mapping mode, when feeding back at code word, the CQI of two code words (Channel QualityIndicator, channel quality indication) needs feedback separately; When assignment, the MCS of two code words (Modulationand Coding Scheme, coding and modulation system) also needs independent assignment.As seen, no matter assignment is still fed back, and each code word all need be carried complete CQI and MCS information, makes that the control channel expense is bigger.
In order to reduce the control channel expense, prior art adopts interlayer to switch mapping mode, as Fig. 4, Fig. 5, shown in Figure 6, each code word all is mapped on all layers, goes through approximately uniform channel to guarantee each code word.Under this mapping mode, can think that the CQI of two code words is approximate identical, therefore can only feed back a CQI.
In order to reduce intersymbol interference, SIC (Successive Interference Cancellation, serial interference elimination) technology is more general a kind of method, its basic thought is: sorted by size by the power of detector to each signal earlier, each the strongest signal of detection power, and from received signal, deduct this all the other signals are disturbed the strongest signal, and then time strong signal of detection power and in received signal, deduct this all the other signals are disturbed time strong signal ..., the rest may be inferred.
Switch under the mapping mode at this interlayer, if receiver adopts the SIC technology, carry out interference eliminated, eliminate wherein after one tunnel the signal, the signal to noise ratio on another road will inevitably become greatly, and then its MCS can improve.Therefore,,, still need independently MCS of two of assignments at two code words in order to guarantee the performance of SIC receiver, same, also need to feed back two independently CQI, make that the control channel expense is bigger.
Summary of the invention
Feedback method and equipment that the embodiment of the invention provides a kind of many code words interlayer to switch mapping on the one hand are to reduce the control channel expense.
Assigning method and equipment that the embodiment of the invention provides a kind of many code words interlayer to switch mapping on the other hand are to reduce the control channel expense.
The embodiment of the invention provides a kind of many code words interlayer to switch the feedback method of mapping, comprising:
Signal receiving end is a selected code word and definite CQI and feedback at described selected code word respective signal from a plurality of code words;
Eliminate of the interference of described selected code word to other code word respective signal;
Determine the CQI of other code word respective signal;
Periodic feedback or be used for determining the information of the CQI of other code word respective signal by Event triggered feedback.
The embodiment of the invention provides a kind of many code words interlayer to switch the feedback information acquisition methods of mapping, comprising:
Signal sending end receives the CQI at selected code word respective signal;
Determine the CQI of current other code word respective signal according to the CQI of the current selected code word respective signal of receiving.
The embodiment of the invention provides a kind of many code words interlayer to switch the assigning method of mapping, comprising:
Signal sending end is a selected code word and definite MCS and assignment at described selected code word respective signal from a plurality of code words;
Determine the MCS of other code word respective signal; Cycle assignment or be used for determining the information of the MCS of described other code word respective signal by the Event triggered assignment.
The embodiment of the invention provides a kind of many code words interlayer to switch the assignation information acquisition methods of mapping, comprising:
Signal receiving end receives the MCS at selected code word respective signal;
Determine the MCS of current other code word respective signal according to the MCS of the current selected code word respective signal of receiving.
The embodiment of the invention provides a kind of many code words interlayer to switch the feedback device of mapping, comprising:
First selected cell is used for from the selected code word of a plurality of code words;
The first feedback parameter determining unit is used for definite CQI at described selected code word respective signal;
Interference cancellation unit is used to eliminate the interference of described selected code word to other code word respective signal;
The second feedback parameter determining unit is used for determining the CQI of other code word respective signal;
Feedback unit is used for normally feeding back the CQI of described selected code word respective signal, and periodic feedback or be used for determining the information of the CQI of other code word respective signal by the Event triggered feedback.
The embodiment of the invention provides the feedback information that a kind of many code words interlayer switches mapping to obtain equipment, comprising:
The feedback parameter receiving element is used to receive the CQI at selected code word respective signal;
The feedback parameter determining unit is used for the CQI according to the current selected code word respective signal of receiving, the CQI of current other code word respective signal is determined or determined by Event triggered to the cycle.
The embodiment of the invention provides a kind of many code words interlayer to switch the assignment equipment of mapping, comprising:
Second selected cell is used for from the selected code word of a plurality of code words;
The first assignment parameter determining unit is used for definite MCS at described selected code word respective signal;
The second assignment parameter determining unit is used for determining the MCS of other code word respective signal;
The assignment unit is used for the MCS of the described selected code word respective signal of normal assignment, and cycle assignment or be used for determining the information of the MCS of described other code word respective signal by the Event triggered assignment.
The embodiment of the invention provides the assignation information that a kind of many code words interlayer switches mapping to obtain equipment, comprising:
Assignment parameter receiving element is used to receive the MCS at selected code word respective signal;
Assignment parameter determining unit is used for the MCS according to the selected code word respective signal of current reception, and the MCS of current other code word respective signal is determined or determined by Event triggered to the cycle.
The method and apparatus of the embodiment of the invention, switch mapping mode based on many code words interlayer, gradually changeable according to channel designs the MCS indication of the assignment message under many code words situation and the CQI indication of feedback channel, Δ MCS or Δ CQI are carried by control channel or RRC message cycle ground or by the Event triggered mode, thereby reduced the expense of control channel.
Description of drawings
Fig. 1 is a kind of mapping relations schematic diagram of 2 code word to 2 layers in the prior art;
Fig. 2 is a kind of mapping relations schematic diagram of 2 code word to 3 layers in the prior art;
Fig. 3 is a kind of mapping relations schematic diagram of 2 code word to 4 layers in the prior art;
Fig. 4 is the another kind of mapping relations schematic diagram of 2 code word to 2 layers in the prior art;
Fig. 5 is the another kind of mapping relations schematic diagram of 2 code word to 3 layers in the prior art;
Fig. 6 is the another kind of mapping relations schematic diagram of 2 code word to 4 layers in the prior art;
Fig. 7 is the flow chart that many code words of embodiment of the invention interlayer switches the feedback method of mapping;
Fig. 8 is the flow chart that many code words of embodiment of the invention interlayer switches the feedback information acquisition methods of mapping;
Fig. 9 is the flow chart that many code words of embodiment of the invention interlayer switches the assigning method of mapping;
Figure 10 is the flow chart that many code words of embodiment of the invention interlayer switches the assignation information acquisition methods of mapping;
Figure 11 is the structural representation that many code words of embodiment of the invention interlayer switches the feedback device of mapping;
Figure 12 is that many code words of embodiment of the invention interlayer switches the structural representation that the feedback information that shines upon obtains equipment;
Figure 13 is the structural representation that many code words of embodiment of the invention interlayer switches the assignment equipment of mapping;
Figure 14 is that many code words of embodiment of the invention interlayer switches the structural representation that the assignation information that shines upon obtains equipment.
Embodiment
In order to make those skilled in the art person understand the scheme of the embodiment of the invention better, the embodiment of the invention is described in further detail below in conjunction with drawings and embodiments.
The method and apparatus of the embodiment of the invention switches mapping mode based on many code words interlayer, and receiving terminal has adopted the multiple access system of interference cancellation techniques, such as, TDMA (Time Division MultipleAccess, time division multiple access inserts), FDMA (Frequency Division Multiple Access, frequency division multiple access inserts), CDMA (Code Division Multiple Access, code division multiple access inserts), OFDMA (Orthogonal Frequency Division Multiple Access, OFDM inserts) or the like, described interference cancellation techniques comprises SIC and PIC (Parallel Interference Cancellation, parallel interference is eliminated), gradually changeable according to channel designs the MCS indication of the assignment message under many code words situation and the CQI indication of feedback channel, to reduce the expense of control channel.
The method and apparatus of the embodiment of the invention goes for the mimo system of two or more many code words space division multiplexings.In order to make description clearer, the situation with two code words is an example below, and the embodiment of the invention is elaborated.
Switch in the mapping mechanism at many code words interlayer, two code words are mapped on all layers according to uniform mode, and like this, all code words travel through all channels according to the approximate probability that is equal to, and each code word has similar CQI.Because two code words have similar CQI, so the MCS of first via code word can obtain by this CQI.But done after the SIC interference eliminated, the second tunnel MCS is bound to than the MCS height of the first via, and proves by a large amount of emulated datas, and the difference DELTA MCS that the second tunnel MCS in contrast to first via MCS is a value that becomes slowly, and is as shown in table 1 below.
Table 1:
| |
1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 |
| MCS(CW1) | 1 | 1 | 1 | 3 | 3 | 3 | 3 | 3 | 3 | 3 |
| MCS(CW2) | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 |
| Frame identification | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 |
| MCS(CW1) | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 1 |
| MCS(CW2) | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 3 |
| Frame identification | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 |
| MCS(CW1) | 1 | 1 | 1 | 1 | 1 | 1 | 3 | 3 | 3 | 3 |
| MCS(CW2) | 3 | 4 | 4 | 4 | 4 | 4 | 5 | 5 | 5 | 5 |
| Frame identification | 31 | 32 | 33 | 34 | 35 | 36 | 37 | 38 | 39 | 40 |
| MCS(CW1) | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 |
| MCS(CW2) | 5 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 3 |
| Frame identification | 41 | 42 | 43 | 44 | 45 | 46 | 47 | 48 | 49 | 50 |
| MCS(CW1) | 1 | 1 | 1 | 1 | 3 | 3 | 3 | 4 | 4 | 4 |
| MCS(CW2) | ?3 | 3 | 3 | 3 | 3 | 4 | 4 | 4 | 4 | 4 |
As shown in table 1, wherein the data block sign is represented the frame number of operation, and the data that intercepted 50 frames here are convenient to statistics.Can see that the MCS of CW2 is a process that becomes slowly with respect to the difference of the MCS of CW1, so can substitute the MCS that need be carried at the CW2 in the assignment message at every turn by the Δ MCS of a longer cycle configuration or the Δ MCS of acquiescence.Like this, can save the expense of assignment message.
Equally, for the CQI in the feedback message, after having realized interference eliminated, also can substitute the CQI that at every turn need be carried at the CW2 in the assignment message by the Δ CQI of a longer cycle configuration or the Δ CQI of acquiescence.Like this, can save the expense of feedback message.
As shown in Figure 7, be the flow chart that many code words of embodiment of the invention interlayer switches the feedback method of mapping, may further comprise the steps:
Step 702 is eliminated the interference of described selected code word to other code word respective signal;
Step 703 is determined the CQI of other code word respective signal;
The difference of the CQI that the described information that is used for determining the CQI of other code word respective signal can be other code word respective signal and the CQI of described selected code word respective signal can also be based on the CQI sign of described selected code word.
In embodiments of the present invention, can determine feedback cycle according to the situation of change of the difference of the CQI of the CQI of described other code word respective signal and described selected code word respective signal, thereby can transmit the difference of the CQI of the CQI of described other code word respective signal and described selected code word respective signal by RRC (Radio Resource Control, Radio Resource control) message or control channel according to the feedback cycle of determining.
In embodiments of the present invention, the CQI by described other code word respective signal of Event triggered feedback is during with the difference of the CQI of described selected code word respective signal, and the feedback cycle of described difference is not fixed.Described incident can be: when the CQI of described selected code word respective signal changes; The CQI of perhaps described other code words (have two when above in described other code words, can select wherein any one code word) respective signal changes.
Many code words interlayer of the embodiment of the invention switches the feedback method of mapping, a code word in the selected many code words of signal receiving end, the CQI of normal this selected code word respective signal of feedback in feedback message, promptly in control channel, transmit this CQI, but the CQI of other code word respective signal is carried in the control channel at every turn, but by control channel or RRC message cycle ground or the mode by Event triggered, carry the information of the CQI that is used for definite other code word respective signal, thereby reduced the expense of control channel.In this manner, signal sending end can be determined the information of the CQI of other code word respective signal according to the CQI of the current described selected code word respective signal of receiving and cycle or by Event triggered being used for of receiving, and calculates the CQI of current described other code word respective signal.
As shown in Figure 8, be the flow chart that many code words of embodiment of the invention interlayer switches the feedback information acquisition methods of mapping, may further comprise the steps:
In this embodiment, can be according to the roll-off characteristic of the difference of the CQI of the CQI of described other code word respective signal and described selected code word respective signal, think that this difference remains unchanged in some cycles or certain incident, setting the corresponding relation of the difference of CQI of the CQI of other code word respective signal and described selected code word respective signal and predetermined period or scheduled event or setting described difference is default value.Like this, signal sending end according to the CQI of the current selected code word respective signal of receiving and the described difference in this predetermined period or scheduled event, calculates the CQI of current other code word respective signal in predetermined period or scheduled event.
Many code words of embodiment of the invention interlayer switches the feedback information acquisition methods of mapping, and signal receiving end only need feed back the CQI of arbitrary code word respective signal in many code words, thereby has reduced the expense of control channel.Signal sending end determines or determines by Event triggered the CQI of other code word respective signal according to this CQI cycle.
As shown in Figure 9, be the flow chart that many code words of embodiment of the invention interlayer switches the assigning method of mapping, may further comprise the steps:
Step 902 is determined the MCS of other code word respective signal;
In embodiments of the present invention, can determine feedback cycle according to the situation of change of the difference of the MCS of the MCS of described other code word respective signal and described selected code word respective signal, transmit the difference of the MCS of the MCS of described other code word respective signal and described selected code word respective signal then according to the feedback cycle of determining by RRC message or control channel.
With two code words is example, and according to the simulation result that table 1 obtains, according to fixing 5 frames as one-period, per 5 frames can trigger high-rise RRC message or dispose the difference of corresponding M CS by the assignment message of control channel transmission.The concrete configuration parameter is as shown in table 2 below.
Table 2:
According to this configuration mode, the corresponding MCS that obtains is as shown in table 3 below.
Table 3:
| |
1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 |
| MCS(CW1) | 1 | 1 | 1 | 3 | 3 | 3 | 3 | 3 | 3 | 3 |
| MCS(CW2) | 4 | 4 | 4 | 6 | 6 | 4 | 4 | 4 | 4 | 4 |
| Frame identification | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 |
| MCS(CW1) | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 1 |
| MCS(CW2) | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 2 |
| Frame identification | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 |
| MCS(CW1) | 1 | 1 | 1 | 1 | 1 | 1 | 3 | 3 | 3 | 3 |
| MCS(CW2) | 4 | 4 | 4 | 4 | 4 | 3 | 5 | 5 | 5 | 5 |
| Frame identification | 31 | 32 | 33 | 34 | 35 | 36 | 37 | 38 | 39 | 40 |
| MCS(CW1) | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 |
| MCS(CW2) | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 |
| Frame identification | 41 | 42 | 43 | 44 | 45 | 46 | 47 | 48 | 49 | 50 |
| MCS(CW1) | 1 | 1 | 1 | 1 | 3 | 3 | 3 | 4 | 4 | 4 |
| MCS(CW2) | 3 | 3 | 3 | 3 | 5 | 3 | 3 | 4 | 4 | 4 |
Compare as can be seen with table 1, among the MCS of the CW2 that obtains according to the method for the embodiment of the invention, have only MCS that a few frames configuration calculates and actual MCS that discrepancy is arranged, the results of the overwhelming majority are mated fully.And each expense has only the expense of the Δ MCS of the MCS indication of CW1 and fixed cycle RRC configuration or control channel transmission, has saved the MCS of each CW2 of indication separately or the CW2 expense with respect to the difference of CW1 greatly.
In embodiments of the present invention, MCS that can also be by described other code word respective signal of Event triggered assignment and the difference of the MCS of described selected code word respective signal, in this case, the assignment cycle of described difference is not fixed.Described incident can be that the MCS of described selected code word respective signal changes, or the MCS of described other code words (have two when above in described other code words, can select wherein any one code word) respective signal changes.
Equally, be example with two code words, the simulation result that obtains according to table 1 triggers high-rise RRC message or disposes the difference of corresponding M CS by the assignment message of control channel transmission based on the MCS change events of CW1.The concrete configuration parameter is as shown in table 4 below.
Table 4:
| Frame identification | 1-3 | 4-19 | 20-26 | 27-31 | 32-40 | 41-44 | 45-50 |
| |
3 | 1 | 3 | 2 | 1 | 2 | 0 |
According to this configuration mode, the corresponding MCS that obtains is as shown in table 5 below.
Table 5:
| |
1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 |
| MCS(CW1) | 1 | 1 | 1 | 3 | 3 | 3 | 3 | 3 | 3 | 3 |
| MCS(CW2) | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 |
| Frame identification | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 |
| MCS(CW1) | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 1 |
| MCS(CW2) | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 |
| Frame identification | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 |
| MCS(CW1) | 1 | 1 | 1 | 1 | 1 | 1 | 3 | 3 | 3 | 3 |
| MCS(CW2) | 4 | 4 | 4 | 4 | 4 | 4 | 5 | 5 | 5 | 5 |
| Frame identification | 31 | 32 | 33 | 34 | 35 | 36 | 37 | 38 | 39 | 40 |
| MCS(CW1) | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 |
| MCS(CW2) | 5 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 |
| Frame identification | 41 | 42 | 43 | 44 | 45 | 46 | 47 | 48 | 49 | 50 |
| MCS(CW1) | 1 | 1 | 1 | 1 | 3 | 3 | 3 | 4 | 4 | 4 |
| MCS(CW2) | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 4 | 4 | 4 |
Compare as can be seen with table 1, among the MCS of the CW2 that obtains according to the method for the embodiment of the invention, have only MCS that a few frames configuration calculates and actual MCS that discrepancy is arranged, the results of the overwhelming majority are mated fully.And each expense has only the expense of the Δ MCS of the MCS indication of CW1 and on-fixed cycle RRC configuration or control channel transmission, has saved the MCS of each CW2 of indication separately or the CW2 expense with respect to the difference of CW1 greatly.
For the cycle assignment or by Event triggered assignment MCS sign, can save the control channel expense equally.
For example, by simulation result shown in the table 1 as can be seen, when the MCS of CW1 value is 1, two kinds of selections are arranged, promptly 3 or 4 for the value of the MCS of CW2.So can indicate corresponding MCS by the MCS sign that carries 1bit in assignment message is 3 still to be 4.At this moment, assignment message and feedback message only need carry the MCS sign of the CW2 of the MCS of CW1 and 1bit.MCS or Δ MCS with respect to CW2 complete in the prior art have saved the control channel expense equally.
This shows, many code words interlayer of the embodiment of the invention switches the assigning method of mapping, a code word in the selected many code words of signal sending end, the MCS of normal this selected code word respective signal of feedback in assignment message, promptly in control channel, transmit this MCS, but the MCS of other code word respective signal is carried in the control channel at every turn, but by control channel or RRC message cycle ground or the mode by Event triggered, carry the information of the MCS that is used for definite described other code word respective signal, thereby reduced the expense of control channel.In this manner, signal receiving end can be according to the MCS of described selected code word respective signal, and the described information that is used for determining the MCS of described other code word respective signal, obtains the MCS of described other code word respective signal.
As shown in figure 10, be the flow chart that many code words of embodiment of the invention interlayer switches the assignation information acquisition methods of mapping, may further comprise the steps:
In this embodiment, can be according to the roll-off characteristic of the difference of the MCS of the MCS of described other code word respective signal and described selected code word respective signal, think that this difference remains unchanged in some cycles or certain incident, setting the corresponding relation of the difference of MCS of the MCS of other code word respective signal and described selected code word respective signal and predetermined period or scheduled event or setting described difference is default value.Like this, signal sending end according to the MCS of the current selected code word respective signal of receiving and the described difference in this predetermined period or scheduled event, calculates the MCS of current other code word respective signal in predetermined period or scheduled event.
Many code words of embodiment of the invention interlayer switches the assignation information acquisition methods of mapping, and signal sending end only needs the MCS of arbitrary code word respective signal in the many code words of assignment, thereby has reduced the expense of control channel.Signal receiving end determines or determines by Event triggered the MCS of other code word respective signal according to this MCS cycle.
One of ordinary skill in the art will appreciate that all or part of step that realizes in the foregoing description method is to instruct relevant hardware to finish by program, described program can be stored in the computer read/write memory medium, described storage medium, as: ROM/RAM, magnetic disc, CD etc.
As shown in figure 11, be the structural representation that many code words of embodiment of the invention interlayer switches the feedback device of mapping.
In this embodiment, described equipment 1100 comprises: first selected cell 1101, the first feedback parameter determining unit 1102, interference cancellation unit 1103, the second feedback parameter determining unit 1104 and feedback unit 1105.Wherein:
First selected cell 1101 is used for from the selected code word of a plurality of code words;
The first feedback parameter determining unit 1102 is used for definite CQI at described selected code word respective signal;
Interference cancellation unit 1103 is used to eliminate the interference of described selected code word to other code word respective signal;
The second feedback parameter determining unit 1104 is used for determining the CQI of other code word respective signal;
Feedback unit 1105 is used for normally feeding back the CQI of described selected code word respective signal, and periodic feedback or be used for determining the information of the CQI of other code word respective signal by the Event triggered feedback.Particularly, the difference of the CQI of the described information that is used for determining the CQI of other code word respective signal CQI that can be other code word respective signal and described selected code word respective signal; Can also be based on the CQI sign of described selected code word.Described feedback unit 1105 can be by RRC message or the described CQI information that is used for determining other code word respective signal of control channel feedback.
The process that the feedback device of many code words of embodiment of the invention interlayer switching mapping feeds back can not repeat them here with reference to the description in the feedback method of front many code words of embodiment of the invention interlayer switching mapping.
Utilize many code words interlayer of the embodiment of the invention to switch the feedback device of mapping, can reduce the expense of control channel.
As shown in figure 12, be that many code words of embodiment of the invention interlayer switches the structural representation that the feedback information that shines upon obtains equipment.
In this embodiment, described equipment 1200 comprises: feedback parameter receiving element 1201 and feedback parameter determining unit 1202.Wherein:
Feedback parameter receiving element 1201 is used to receive the CQI at selected code word respective signal;
Feedback parameter determining unit 1202 is used for the CQI according to the current selected code word respective signal of receiving, the CQI of current other code word respective signal is determined or determined by Event triggered to the cycle.
In embodiments of the present invention, also can further comprise feedback parameter difference setup unit 1203, be used to set the corresponding relation of the difference of CQI of the CQI of other code word respective signal and described selected code word respective signal and predetermined period or scheduled event or set described difference and be acquiescence, described difference remains unchanged in described predetermined period or scheduled event.Like this, feedback parameter determining unit 1202 according to the CQI of the current selected code word respective signal of receiving and the described difference in this predetermined period or scheduled event, calculates the CQI of current other code word respective signal in described predetermined period or scheduled event.
Described predetermined period can determine according to the situation of change of the difference of the CQI of the CQI of described other code word respective signal and described selected code word respective signal, and described scheduled event can be the variation etc. of the CQI of selected code word respective signal.
The feedback information that many code words of embodiment of the invention interlayer switches mapping obtains the process that equipment obtains feedback information can switch description in the feedback information acquisition methods of mapping with reference to front many code words of embodiment of the invention interlayer, does not repeat them here.
Utilize many code words interlayer of the embodiment of the invention to switch the feedback device of mapping, can reduce the expense of control channel.
As shown in figure 13, be the structural representation that many code words of embodiment of the invention interlayer switches the assignment equipment of mapping.
In this embodiment, described equipment 1300 comprises: second selected cell 1301, the first assignment parameter determining unit 1302, second assignment parameter determining unit 1303 and the assignment unit 1304.Wherein:
Second selected cell 1301 is used for from the selected code word of a plurality of code words;
The first assignment parameter determining unit 1302 is used for definite MCS at described selected code word respective signal;
The second assignment parameter determining unit 1303 is used for determining the MCS of other code word respective signal;
Described assignment unit 1304 can feed back the described information that is used for the MCS of definite described other code word respective signal by RRC message or control channel in described assignment unit.
The process that the assignment equipment of many code words of embodiment of the invention interlayer switching mapping carries out assignment can not repeat them here with reference to the description in the assigning method of front many code words of embodiment of the invention interlayer switching mapping.
Utilize many code words interlayer of the embodiment of the invention to switch the assignment equipment of mapping, can reduce the expense of control channel.
As shown in figure 14, be that many code words of embodiment of the invention interlayer switches the structural representation that the assignation information that shines upon obtains equipment.
In this embodiment, described equipment 1400 comprises: assignment parameter receiving element 1401 and assignment parameter determining unit 1402.Wherein:
Assignment parameter receiving element 1401 is used to receive the MCS at selected code word respective signal;
Assignment parameter determining unit 1402 is used for the MCS according to the selected code word respective signal of current reception, and the MCS of current other code word respective signal is determined or determined by Event triggered to the cycle.
In embodiments of the present invention, also can further comprise: assignment parameter difference setup unit 1403, being used to set the corresponding relation of the difference of MCS of the MCS of other code word respective signal and described selected code word respective signal and predetermined period or scheduled event or setting described difference is default value, and described difference remains unchanged in described predetermined period or scheduled event.Like this, feedback parameter determining unit 1402 can calculate the MCS of current other code word respective signal according to the MCS of the current selected code word respective signal of receiving and the described difference in this predetermined period or scheduled event in described predetermined period or scheduled event.
The assignation information that many code words of embodiment of the invention interlayer switches mapping obtains the process that equipment obtains assignation information can switch description in the assignation information acquisition methods of mapping with reference to front many code words of embodiment of the invention interlayer, does not repeat them here.
Utilize the assignation information that many code words of embodiment of the invention interlayer switches mapping to obtain equipment, can reduce the expense of control channel.
More than the embodiment of the invention is described in detail, used embodiment herein the present invention set forth, the explanation of above embodiment just is used for help understanding method and apparatus of the present invention; Simultaneously, for one of ordinary skill in the art, according to thought of the present invention, the part that all can change in specific embodiments and applications, in sum, this description should not be construed as limitation of the present invention.
Claims (26)
1. code word interlayer more than a kind switches the feedback method of mapping, it is characterized in that, comprising:
Signal receiving end is a selected code word and definite CQI and feedback at described selected code word respective signal from a plurality of code words;
Eliminate of the interference of described selected code word to other code word respective signal;
Determine the CQI of other code word respective signal;
Periodic feedback or be used for determining the information of the CQI of other code word respective signal by Event triggered feedback.
2. method according to claim 1 is characterized in that, the difference of the CQI that the described information that is used for the CQI of definite other code word respective signal is other code word respective signal and the CQI of described selected code word respective signal.
3. method according to claim 2 is characterized in that, the difference of the CQI of described other code word respective signal of described periodic feedback and the CQI of described selected code word respective signal comprises:
Difference according to the CQI of the CQI of described other code word respective signal and described selected code word respective signal is determined feedback cycle;
Transmit the difference of the CQI of the CQI of described other code word respective signal and described selected code word respective signal by RRC message or control channel according to the feedback cycle of determining.
4. method according to claim 2 is characterized in that, described by described other code word respective signal of Event triggered feedback CQI and the difference of the CQI of described selected code word respective signal comprise:
When the CQI of described selected code word respective signal changes, the difference of the CQI by described other code word respective signal of RRC message or control channel feedback and the CQI of described selected code word respective signal; Perhaps
When the CQI of described other code word respective signal changes, the difference of the CQI by described other code word respective signal of RRC message or control channel feedback and the CQI of described selected code word respective signal.
5. method according to claim 1 is characterized in that, the described information that is used for the CQI of definite other code word respective signal is the CQI sign based on described selected code word.
6. according to each described method of claim 1 to 5, it is characterized in that described method also comprises:
Signal sending end is determined the information of the CQI of other code word respective signal according to the CQI of the current described selected code word respective signal of receiving and cycle or by Event triggered being used for of receiving, and calculates the CQI of current described other code word respective signal.
7. code word interlayer more than a kind switches the feedback information acquisition methods of mapping, it is characterized in that, comprising:
Signal sending end receives the CQI at selected code word respective signal;
Determine the CQI of current other code word respective signal according to the CQI of the current selected code word respective signal of receiving.
8. method according to claim 7 is characterized in that, described method also comprises:
Setting the corresponding relation of the difference of CQI of the CQI of other code word respective signal and described selected code word respective signal and predetermined period or scheduled event or setting described difference is default value, and described difference remains unchanged in described predetermined period or scheduled event;
Described CQI according to the current selected code word respective signal of receiving determines that the CQI of current other code word respective signal comprises:
In described predetermined period or scheduled event,, calculate the CQI of current other code word respective signal according to the CQI of the current selected code word respective signal of receiving and the described difference in this predetermined period or scheduled event.
9. code word interlayer more than a kind switches the assigning method of mapping, it is characterized in that, comprising:
Signal sending end is a selected code word and definite MCS and assignment at described selected code word respective signal from a plurality of code words;
Determine the MCS of other code word respective signal; Cycle assignment or be used for determining the information of the MCS of described other code word respective signal by the Event triggered assignment.
10. method according to claim 9 is characterized in that, the difference of the MCS that the described information that is used for the MCS of definite described other code word respective signal is other code word respective signal and the MCS of described selected code word respective signal.
11. method according to claim 10 is characterized in that, the difference of the MCS of described other code word respective signal of described cycle assignment and the MCS of described selected code word respective signal comprises:
Difference according to the MCS of the MCS of described other code word respective signal and described selected code word respective signal is determined feedback cycle;
Transmit the difference of the MCS of the MCS of described other code word respective signal and described selected code word respective signal by RRC message or control channel according to the feedback cycle of determining.
12. method according to claim 10 is characterized in that, described by described other code word respective signal of Event triggered assignment MCS and the difference of the MCS of described selected code word respective signal comprise:
When the MCS of described selected code word respective signal changes, the difference of the MCS by described other code word respective signal of RRC message or control channel feedback and the MCS of described selected code word respective signal; Perhaps
When the MCS of described other code word respective signal changes, the difference of the MCS by described other code word respective signal of RRC message or control channel feedback and the MCS of described selected code word respective signal.
13. method according to claim 9 is characterized in that, the described information that is used for the MCS of definite other code word respective signal is the MCS sign based on described selected code word.
14., it is characterized in that described method also comprises according to each described method of claim 9 to 13:
Signal receiving end is determined the information of the MCS of other code word respective signal according to the MCS of the current described selected code word respective signal of receiving and cycle or by Event triggered being used for of receiving, and calculates the MCS of current described other code word respective signal.
15. code word interlayer more than a kind switches the assignation information acquisition methods of mapping, it is characterized in that, comprising:
Signal receiving end receives the MCS at selected code word respective signal;
Determine the MCS of current other code word respective signal according to the MCS of the current selected code word respective signal of receiving.
16. method according to claim 15 is characterized in that, described method also comprises:
Setting the corresponding relation of the difference of MCS of the MCS of other code word respective signal and described selected code word respective signal and predetermined period or scheduled event or setting described difference is default value, and described difference remains unchanged in described predetermined period or scheduled event;
Described MCS according to the current selected code word respective signal of receiving determines that the MCS of current other code word respective signal comprises:
In described predetermined period or scheduled event,, calculate the MCS of current other code word respective signal according to the MCS of the current selected code word respective signal of receiving and the described difference in this predetermined period or scheduled event.
17. code word interlayer more than a kind switches the feedback device of mapping, it is characterized in that, comprising:
First selected cell is used for from the selected code word of a plurality of code words;
The first feedback parameter determining unit is used for definite CQI at described selected code word respective signal;
Interference cancellation unit is used to eliminate the interference of described selected code word to other code word respective signal;
The second feedback parameter determining unit is used for determining the CQI of other code word respective signal;
Feedback unit is used for normally feeding back the CQI of described selected code word respective signal, and periodic feedback or be used for determining the information of the CQI of other code word respective signal by the Event triggered feedback.
18. equipment according to claim 17 is characterized in that, the described information that is used for the CQI of definite other code word respective signal is:
The difference of the CQI of the CQI of other code word respective signal and described selected code word respective signal; Perhaps
CQI sign based on described selected code word.
19., it is characterized in that described feedback unit is by RRC message or the described information that is used for the CQI of definite other code word respective signal of control channel feedback according to claim 17 or 18 described equipment.
Obtain equipment 20. code word interlayer more than a kind switches the feedback information of mapping, it is characterized in that, comprising:
The feedback parameter receiving element is used to receive the CQI at selected code word respective signal;
The feedback parameter determining unit is used for the CQI according to the current selected code word respective signal of receiving, the CQI of current other code word respective signal is determined or determined by Event triggered to the cycle.
21. equipment according to claim 20, it is characterized in that, also comprise: feedback parameter difference setup unit, being used to set the corresponding relation of the difference of CQI of the CQI of other code word respective signal and described selected code word respective signal and predetermined period or scheduled event or setting described difference is default value, and described difference remains unchanged in described predetermined period or scheduled event;
The feedback parameter determining unit according to the CQI of the current selected code word respective signal of receiving and the described difference in this predetermined period or scheduled event, calculates the CQI of current other code word respective signal in described predetermined period or scheduled event.
22. code word interlayer more than a kind switches the assignment equipment of mapping, it is characterized in that, comprising:
Second selected cell is used for from the selected code word of a plurality of code words;
The first assignment parameter determining unit is used for definite MCS at described selected code word respective signal;
The second assignment parameter determining unit is used for determining the MCS of other code word respective signal;
The assignment unit is used for the MCS of the described selected code word respective signal of normal assignment, and cycle assignment or be used for determining the information of the MCS of described other code word respective signal by the Event triggered assignment.
23. equipment according to claim 22 is characterized in that, the described information that is used for the MCS of definite other code word respective signal is:
The difference of the MCS of the MCS of other code word respective signal and described selected code word respective signal; Perhaps
MCS sign based on described selected code word.
24. according to claim 22 or 23 described equipment, it is characterized in that,
Described assignment unit is by RRC message or the described information that is used for the MCS of definite described other code word respective signal of control channel feedback.
Obtain equipment 25. code word interlayer more than a kind switches the assignation information of mapping, it is characterized in that, comprising:
Assignment parameter receiving element is used to receive the MCS at selected code word respective signal;
Assignment parameter determining unit is used for the MCS according to the selected code word respective signal of current reception, and the MCS of current other code word respective signal is determined or determined by Event triggered to the cycle.
26. equipment according to claim 25 is characterized in that, also comprises:
Assignment parameter difference setup unit, being used to set the corresponding relation of the difference of MCS of the MCS of other code word respective signal and described selected code word respective signal and predetermined period or scheduled event or setting described difference is default value, and described difference remains unchanged in described predetermined period or scheduled event;
The feedback parameter determining unit according to the MCS of the current selected code word respective signal of receiving and the described difference in this predetermined period or scheduled event, calculates the MCS of current other code word respective signal in described predetermined period or scheduled event.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101467636A CN101938339A (en) | 2009-07-01 | 2009-07-01 | Feedback method and device and assignment method and device of multi-code word inter-layer switching mapping |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101467636A CN101938339A (en) | 2009-07-01 | 2009-07-01 | Feedback method and device and assignment method and device of multi-code word inter-layer switching mapping |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101938339A true CN101938339A (en) | 2011-01-05 |
Family
ID=43391491
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009101467636A Pending CN101938339A (en) | 2009-07-01 | 2009-07-01 | Feedback method and device and assignment method and device of multi-code word inter-layer switching mapping |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101938339A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103748815A (en) * | 2011-07-01 | 2014-04-23 | 英特尔公司 | Transmitting uplink control information |
| WO2016004614A1 (en) * | 2014-07-11 | 2016-01-14 | 华为技术有限公司 | Data transmission method, user equipment and base station |
-
2009
- 2009-07-01 CN CN2009101467636A patent/CN101938339A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103748815A (en) * | 2011-07-01 | 2014-04-23 | 英特尔公司 | Transmitting uplink control information |
| WO2016004614A1 (en) * | 2014-07-11 | 2016-01-14 | 华为技术有限公司 | Data transmission method, user equipment and base station |
| US10432371B2 (en) | 2014-07-11 | 2019-10-01 | Huawei Technologies Co., Ltd. | Data transmission method, user equipment, and base station |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110536399B (en) | Power control method, device and system | |
| CN101166052B (en) | Precoding method of multi-input multi-output system and equipment using same | |
| US8254944B2 (en) | Method and apparatus for transmitting in multiple antennas and controlling feedback information | |
| CN101669297B (en) | Method and system for managing control information | |
| EP2362563B1 (en) | Channel state information feedback | |
| CN110635883B (en) | Information feedback method and device, storage medium and electronic device | |
| CN101668331B (en) | A method for allocation of parameters for radio transmission, network elements and wireless communication network therefor | |
| CN101405978A (en) | Grouping of users for MIMO transmission in a wireless communication system | |
| CN103125083A (en) | Method and apparatus for feedback in multi-user multiple-input multiple-output (MU-MIMO) communication system | |
| CN101741445B (en) | Non-codebook precoding MIMO transmission method and base station | |
| CN105991238A (en) | Measurement and feedback method of channel state information, sending end, and receiving end | |
| WO2011082626A1 (en) | Reporting of channel state information | |
| CN101682463A (en) | Method for performing an adaptive modulation and coding scheme in mobile communication system | |
| JP2013522982A (en) | Codebook arrangement method, apparatus and system | |
| CN101291526A (en) | Adaptive scheduling method and apparatus reducing information feedback amount | |
| CN102545989A (en) | Communication method, device and system used for distributed antenna system | |
| KR20120010235A (en) | Communication method in multi-user MIO network using precoding and precoding device | |
| US9319116B2 (en) | Channel state information feedback | |
| CN101822113A (en) | Method and system for managing transmission resources in wireless communications systems | |
| CN116232554A (en) | Transmission parameter processing method and device | |
| CN101534527B (en) | Method for indicating downlink precoding information | |
| CN101860386A (en) | Multi-user random beam forming method and system | |
| CN109417442B (en) | Uplink multi-antenna signal transmission method, related equipment and system | |
| CN101512930B (en) | Efficient CQI signaling in MIMO systems with variable numbers of beams | |
| CN102916768A (en) | Feedback method, device and system of high speed dedicated physical control channels |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20110105 |