CN101795148A - Mapping method and device based on channel quality indication calculation pilot frequency - Google Patents
Mapping method and device based on channel quality indication calculation pilot frequency Download PDFInfo
- Publication number
- CN101795148A CN101795148A CN200910007110A CN200910007110A CN101795148A CN 101795148 A CN101795148 A CN 101795148A CN 200910007110 A CN200910007110 A CN 200910007110A CN 200910007110 A CN200910007110 A CN 200910007110A CN 101795148 A CN101795148 A CN 101795148A
- Authority
- CN
- China
- Prior art keywords
- channel quality
- quality indication
- frequency
- public guide
- pilot frequency
- 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.)
- Granted
Links
Images
Landscapes
- Mobile Radio Communication Systems (AREA)
Abstract
The invention discloses mapping method and device based on a channel quality indication calculation pilot frequency, wherein the method comprises the following steps of: only mapping a part of common pilot frequency of an antenna port as a channel quality indication calculation pilot frequency for one or a set of districts, and using signals of the channel quality indication calculation pilot frequency for calculating parameters of channel quality indication. By using a part of pilot frequency signals of the common pilot frequency as a calculation basis of the channel quality indication, compared with the prior art, the invention can reduce the expense of the pilot frequency, enhances the treatment efficiency of a system and enables a terminal to obtain channel quality indication information on a full bandwidth, thereby ensuring that an original pilot frequency pattern is not changed and influencing the system little.
Description
Technical field
The present invention relates to the communications field, relate in particular to a kind of mapping method and device based on channel quality indication calculation pilot frequency.
Background technology
In the wireless way system of a new generation, multipoint cooperative transmission (Coordinate Multipoint Transmission and Reception by network level, abbreviate COMP as), improve the throughput of Cell Edge User, and the interference coordination that carries out the minizone, for example, advanced long-term evolution system (Long-Term Evolution advance, abbreviate LTE-Advance as), senior international wireless communication system (International MobileTelecommunication advance abbreviates IMT-Advance as) etc.
Third generation partner program (The Third generation Partner Project, abbreviate 3GPP as) the LTE system in, descending special pilot frequency can be used as portable terminal (UserEquipment, abbreviate UE as) the special demodulating signal, and, when multi-cell cooperating, this descending special pilot frequency signal does not need to send the weights information of many antenna weightings, like this, can save the Signalling exchange between portable terminal and the base station, be convenient to the flexible switching of the various technology of eating dishes without rice or wine.
Because descending special pilot frequency is the configuration especially of each portable terminal, only on the running time-frequency resource that distributes for portable terminal, send, if descending special pilot frequency is indicated (Channel Quality Indicator as channel quality, abbreviate CQI as) the measuring and calculating foundation, can cause the scheduling of resource of system can't effectively obtain comprehensive channel quality information.
Proposed to utilize the method for public guide frequency at present as the channel quality indication, mainly all send to receiving terminal by all public guide frequencies with each sub-district correspondence, the measuring and calculating foundation that receiving terminal is indicated as channel quality with all public guide frequencies that receive obtains channel quality information.Though can obtain complete channel quality information like this, the expense of pilot tone is bigger, can influence the whole efficiency of system.
Summary of the invention
Consider exist in the correlation technique utilize all public guide frequencies to indicate as channel quality the time, cause the expense of pilot tone bigger, influence system whole efficiency problem and the present invention is proposed, for this reason, main purpose of the present invention is to provide a kind of mapping method and device based on channel quality indication calculation pilot frequency, to address the above problem.
According to an aspect of the present invention, provide a kind of mapping method based on channel quality indication calculation pilot frequency.
Mapping method based on channel quality indication calculation pilot frequency according to the present invention comprises: for one or one group of sub-district, the part public guide frequency that only shines upon an antenna port is as channel quality indication calculation pilot frequency, and the signal of channel quality indication calculation pilot frequency is used for the parameter of calculating channel quality indication.
Wherein, an antenna port is corresponding to one or one group of sub-district, and one or one group of sub-district are only corresponding to an antenna port.
Alternatively, the quantity of part public guide frequency can be two or four.
Wherein, the processing that the part public guide frequency in a plurality of public guide frequencies is configured to channel quality indication calculation pilot frequency can comprise: all public guide frequencies that comprise in first OFDM symbol in the Physical Resource Block and second the OFDM symbol are set to channel quality indication calculation pilot frequency.
In addition, the quantity of a plurality of sub-districts can be 3, and for one of them sub-district, the quantity of part public guide frequency is four, and for two other sub-district, the quantity of part public guide frequency is two.
In addition, the processing that the part public guide frequency in a plurality of public guide frequencies is configured to channel quality indication calculation pilot frequency can comprise: all public guide frequencies that comprise in five the OFDM symbols of first OFDM symbol to the in the Physical Resource Block of normal cyclic prefix structure are set to channel quality indication calculation pilot frequency.
In addition, the processing that the part public guide frequency in a plurality of public guide frequencies is configured to channel quality indication calculation pilot frequency can also comprise: all public guide frequencies that comprise in four the OFDM symbols of first OFDM symbol to the in the Physical Resource Block of long loop prefix structure are set to channel quality indication calculation pilot frequency.
Alternatively, the quantity of the part public guide frequency of each the sub-district correspondence in a plurality of sub-districts is all inequality, and perhaps part is identical, and is perhaps all identical.
In the method, the pilot tone frequency domain side-play amount that can also determine according to high level be carried out the frequency domain displacement to the channel quality indication calculation pilot frequency of mapping, the channel quality indication calculation pilot frequency after or the displacement of one group of sub-district emission frequency domain; Channel quality indication calculation pilot frequency mapping pattern after portable terminal is shifted according to frequency domain is extracted pilot tone, and the measuring and calculating channel quality indication (CQI) information.
On the other hand, portable terminal receive channel quality indication calculation pilot frequency can extract pilot tone according to the pilot tone pattern of channel quality indication calculation pilot frequency, and the measuring and calculating channel quality indication (CQI) information.
According to a further aspect in the invention, provide a kind of mapping device based on channel quality indication calculation pilot frequency.
Mapping device based on channel quality indication calculation pilot frequency according to the present invention comprises: configuration module, and the road public guide frequency that is used for belonging to an antenna port is configured to corresponding one or one group of sub-district; Mapping block is used for one or one group of sub-district, and the part public guide frequency in a plurality of public guide frequencies of only mapping correspondence is as channel quality indication calculation pilot frequency, and wherein, the signal of channel quality indication calculation pilot frequency is used for the parameter of calculating channel quality indication.
By above-mentioned at least one technical scheme of the present invention, in the COMP technology, the measuring and calculating foundation by the pilot signal of part public guide frequency is indicated as channel quality than prior art, can reduce the expense of pilot tone, improves the treatment effeciency of system; And can make terminal obtain channel quality indication (CQI) information on the full bandwidth, thereby can guarantee that original pilot tone pattern is not changed, less to systematic influence.
Description of drawings
Accompanying drawing is used to provide further understanding of the present invention, and constitutes the part of specification, is used from explanation the present invention with embodiments of the invention one, is not construed as limiting the invention.In the accompanying drawings:
Fig. 1 a is the public guide frequency pattern schematic diagram based on the normal cyclic prefix frame structure according to correlation technique;
Fig. 1 b is the public guide frequency pattern schematic diagram based on long loop prefix frame structure according to correlation technique;
Fig. 2 is the flow chart based on the mapping method of channel quality indication calculation pilot frequency according to the inventive method embodiment;
Fig. 3 a is based on the schematic diagram of the example 1 of the public guide frequency pattern of normal cyclic prefix frame structure during according to four cell cooperatives of the embodiment of the invention;
Fig. 3 b is based on the schematic diagram of the example 1 of the public guide frequency pattern of long loop prefix frame structure during according to four cell cooperatives of the embodiment of the invention;
Fig. 4 a is based on the schematic diagram of the example 2 of the public guide frequency pattern of normal cyclic prefix frame structure during according to four cell cooperatives of the embodiment of the invention;
Fig. 4 b is based on the schematic diagram of the example 2 of the public guide frequency pattern of long loop prefix frame structure during according to four cell cooperatives of the embodiment of the invention;
Fig. 5 a is based on the schematic diagram of the example 3 of the public guide frequency pattern of normal cyclic prefix frame structure during according to three cell cooperatives of the embodiment of the invention;
Fig. 5 b is based on the schematic diagram of the example 3 of the public guide frequency pattern of long loop prefix frame structure during according to three cell cooperatives of the embodiment of the invention;
Fig. 6 a is based on the schematic diagram of the example 4 of the public guide frequency pattern of normal cyclic prefix frame structure during according to four cell cooperatives of the embodiment of the invention;
Fig. 6 b is based on the schematic diagram of the example 4 of the public guide frequency pattern of long loop prefix frame structure during according to four cell cooperatives of the embodiment of the invention;
Fig. 7 a is based on the schematic diagram of the example 5 of the public guide frequency pattern of normal cyclic prefix frame structure during according to four groups of cell cooperatives of the embodiment of the invention;
Fig. 7 b is based on the schematic diagram of the example 5 of the public guide frequency pattern of long loop prefix frame structure during according to four groups of cell cooperatives of the embodiment of the invention;
Fig. 8 is the block diagram based on the mapping device of channel quality indication calculation pilot frequency according to apparatus of the present invention embodiment.
Embodiment
Functional overview
As mentioned above, at existing in the prior art with the measuring and calculating foundation of all public guide frequencies as the channel quality indication, cause the expense of pilot tone bigger, influence the problem of the whole efficiency of system, propose a kind of based on the pilot tone mapping processing scheme of multipoint cooperative transmission (COMP) The Application of Technology in channel quality indication (CQI) measuring and calculating.
At Long Term Evolution (Long-Term Evolution, abbreviate LTE as) in the system, stipulated public guide frequency pattern based on the antenna port 4 of normal cyclic prefix frame structure and long loop prefix frame structure, based on this, basic ideas of the present invention are: in the COMP technology, public guide frequency pattern based on antenna port 4, the road public guide frequency that belongs to an antenna port is configured to corresponding at least one sub-district (or one group of sub-district), and, for each sub-district, can be with the part public guide frequency in one road public guide frequency of its correspondence as channel quality indication calculation pilot frequency, rather than with all public guide frequencies all as channel quality indication calculation pilot frequency, reduce the expense of pilot tone with this, improve the efficient of system.
It should be noted that, every road public guide frequency corresponding district hereinafter can be a sub-district, it also can be one group of sub-district, under the situation of one road public guide frequency corresponding to one group of sub-district, this group sub-district can be a plurality of sub-districts with identical many antenna processing mode and step, and these sub-districts can be a plurality of sub-districts (can be described as cooperation cell) of serving same terminal (can be a plurality of terminals).
Under the situation of not conflicting, embodiment and the feature among the embodiment among the application can make up mutually.
For the ease of understanding the embodiment of the invention, before the explanation embodiment of the invention, 1a and accompanying drawing 1b describe the public guide frequency pattern of the long loop prefix frame structure of the public guide frequency pattern of the normal cyclic prefix frame structure of antenna port in the prior art 4 and antenna port 4 at first in conjunction with the accompanying drawings.As shown in Figure 1a, in a physical resource unit, comprise 14 OFDMs (OrthogonalFrequency Division Multiplexing on the frequency domain based on the frame structure of normal cyclic prefix, abbreviate OFDM as) symbol, comprise 12 subcarriers on the time domain, wherein, R
0Be the public guide frequency that antenna port 0 sends, R
1Be the public guide frequency that antenna port 1 sends, R
2Be the public guide frequency that antenna port 3 sends, R
3Public guide frequency for antenna port 3 transmissions.Shown in Fig. 1 b, in a physical resource unit, comprise 12 OFDM symbols on the frequency domain based on the frame structure of long loop prefix, comprise 12 subcarriers on the time domain, wherein, R
0Be the public guide frequency that antenna port 0 sends, R
1Be the public guide frequency that antenna port 1 sends, R
2Be the public guide frequency that antenna port 3 sends, R
3Public guide frequency for antenna port 3 transmissions.
Describe the present invention in detail below in conjunction with accompanying drawing.
Method embodiment
According to the embodiment of the invention, provide a kind of mapping method based on channel quality indication calculation pilot frequency.
Fig. 2 is the flow chart based on the mapping method of channel quality indication calculation pilot frequency according to the embodiment of the invention, and as shown in Figure 2, this method may further comprise the steps (step S202 is to step S204).
Step S202, for one or one group of sub-district, the part public guide frequency that only shines upon an antenna port is as channel quality indication calculation pilot frequency, and the signal of channel quality indication calculation pilot frequency is used for the parameter of calculating channel quality indication; Wherein, antenna port can be corresponding to one or one group of sub-district, and each sub-district is only corresponding to an antenna port; And the quantity of the part public guide frequency of each the sub-district correspondence in a plurality of sub-districts can be all inequality, and is also can part identical, also can be all identical.
Step S204, the channel quality indication calculation pilot frequency after the emission mapping.
And,, on any subcarrier and/or any OFDM, have only a public guide frequency as channel quality indication calculation pilot frequency for same antenna port.For example, the part public guide frequency being configured to channel quality indication calculation pilot frequency can comprise: the quantity of part public guide frequency is two; The quantity of part public guide frequency is four; All public guide frequencies that comprise in first OFDM symbol of each subcarrier and second the OFDM symbol in the Physical Resource Block are set to channel quality indication calculation pilot frequency; The quantity of a plurality of sub-districts is 3, and for one of them sub-district, the quantity of part public guide frequency is four, and for two other sub-district, the quantity of part public guide frequency is two.
Wherein, channel quality indication calculation pilot frequency can be mapped to the OFDM symbol of other quantity, for example, all public guide frequencies that comprise in five OFDM symbols of first OFDM symbol to the in can the Physical Resource Block of normal cyclic prefix structure are set to channel quality indication calculation pilot frequency, and all public guide frequencies that comprise in four the OFDM symbols of first OFDM symbol to the in can also the Physical Resource Block of long loop prefix structure are set to channel quality indication calculation pilot frequency.
Technical scheme by the embodiment of the invention provides in the COMP technology, by the measuring and calculating foundation that the pilot signal of part public guide frequency is indicated as channel quality, can reduce the expense of pilot tone, improves the treatment effeciency of system.
In specific implementation process, can at first be defined as same terminal provides a plurality of microzonations of service to be divided into a plurality of sub-districts, and wherein, these a plurality of sub-districts can provide service for a terminal, also can provide service for a plurality of terminals.Be elaborated below in conjunction with the pattern of instantiation to channel quality indication calculation pilot frequency of the present invention.
Example 1
Fig. 3 a is based on the public guide frequency pattern schematic diagram of normal cyclic prefix frame structure during according to four cell cooperatives of the embodiment of the invention, promptly, in this example, four cooperation cell are arranged (promptly, sub-district mentioned above) provides service for identical terminal, clear in order to describe, these four cooperation cell can be called cooperation cell 1, cooperation cell 2, cooperation cell 3 and cooperation cell 4.
Shown in Fig. 3 a, cooperation cell 1 is configured to the public guide frequency R of respective antenna port 0
0, cooperation cell 2 is configured to the public guide frequency R of respective antenna port one
1, cooperation cell 3 is configured to the public guide frequency R of respective antenna port 2
2, cooperation cell 4 is configured to the public guide frequency R of respective antenna port 3
3And two public guide frequency R in the selection antenna port 0
0As channel quality indication calculation pilot frequency, two public guide frequency R in the antenna port 1
1As channel quality indication calculation pilot frequency, two public guide frequency R in the antenna port 2
2As channel quality indication calculation pilot frequency, two public guide frequency R in the antenna port 3
3As channel quality indication calculation pilot frequency, wherein, the public guide frequency of a plurality of antenna ports is staggered mapping in Physical Resource Block.
Fig. 3 b is based on the public guide frequency pattern schematic diagram of long loop prefix frame structure during according to four cell cooperatives of the embodiment of the invention, promptly there are four cooperation cell to provide service, these four cooperation cell are called cooperation cell 1, cooperation cell 2, cooperation cell 3 and cooperation cell 4 for identical terminal.
Shown in Fig. 3 b, cooperation cell 1 is configured to the public guide frequency R of respective antenna port 0
0, cooperation cell 2 is configured to the public guide frequency R of respective antenna port one
1, cooperation cell 3 is configured to the public guide frequency R of respective antenna port 2
2, cooperation cell 4 is configured to the public guide frequency R of respective antenna port 3
3And two public guide frequency R in the selection antenna port 0
0As channel quality indication calculation pilot frequency, two public guide frequency R in the antenna port 1
1As channel quality indication calculation pilot frequency, two public guide frequency R in the antenna port 2
2As channel quality indication calculation pilot frequency, two public guide frequency R in the antenna port 3
3As channel quality indication calculation pilot frequency.For each antenna port, two public guide frequencies as channel quality indication calculation pilot frequency can not be positioned on the identical subcarrier and OFDM, that is, and and for same antenna port, on any subcarrier and any OFDM, has only a public guide frequency as channel quality indication calculation pilot frequency.
Example 2
Fig. 4 a is based on the public guide frequency pattern schematic diagram of normal cyclic prefix frame structure during according to four cell cooperatives of the embodiment of the invention, promptly, in this example, there are four cooperation cell to provide service for identical terminal, clear in order to describe, these four cooperation cell can be called cooperation cell 1, cooperation cell 2, cooperation cell 3 and cooperation cell 4.
Shown in Fig. 4 a, cooperation cell 1 is configured to the public guide frequency R of respective antenna port 0
0, cooperation cell 2 is configured to the public guide frequency R of respective antenna port one
1, cooperation cell 3 is configured to the public guide frequency R of respective antenna port 2
2, cooperation cell 4 is configured to the public guide frequency R of respective antenna port 3
3And all public guide frequencies that comprise in first OFDM symbol in the Physical Resource Block and second the OFDM symbol are set to channel quality indication calculation pilot frequency.For each antenna port, can not be positioned on the identical OFDM as two public guide frequencies of channel quality indication calculation pilot frequency, that is,, on subcarrier arbitrarily, have only a public guide frequency as channel quality indication calculation pilot frequency for same antenna port.
Fig. 4 b is based on the public guide frequency pattern schematic diagram of long loop prefix frame structure during according to four cell cooperatives of the embodiment of the invention, promptly there are four cooperation cell to provide service, these four cooperation cell can be called cooperation cell 1, cooperation cell 2, cooperation cell 3 and cooperation cell 4 for identical terminal.
Shown in Fig. 4 b, cooperation cell 1 is configured to the public guide frequency R of respective antenna port 0
0, cooperation cell 2 is configured to the public guide frequency R of respective antenna port one
1, cooperation cell 3 is configured to the public guide frequency R of respective antenna port 2
2, cooperation cell 4 is configured to the public guide frequency R of respective antenna port 3
3And all public guide frequencies that comprise in first OFDM symbol in the Physical Resource Block and second the OFDM symbol are set to channel quality indication calculation pilot frequency.For each antenna port, can not be positioned on the identical OFDM as two public guide frequencies of channel quality indication calculation pilot frequency, that is,, on subcarrier arbitrarily, have only a public guide frequency as channel quality indication calculation pilot frequency for same antenna port.
Example 3
Fig. 5 a is based on the public guide frequency pattern schematic diagram of normal cyclic prefix frame structure during according to three cell cooperatives of the embodiment of the invention, promptly, in this example, there are three cooperation cell to provide service for identical terminal, clear in order to describe, these three cooperation cell can be called cooperation cell 1, cooperation cell 2 and cooperation cell 3.
Shown in Fig. 5 a, cooperation cell 1 is configured to the public guide frequency R of respective antenna port 0
0, cooperation cell 2 is configured to the public guide frequency R of respective antenna port one
1, cooperation cell 3 is configured to the public guide frequency R of respective antenna port 2
2And four public guide frequency R in the selection antenna port 0
0As channel quality indication calculation pilot frequency, four public guide frequency R in the antenna port 1
1As channel quality indication calculation pilot frequency, four public guide frequency R in the antenna port 2
2As channel quality indication calculation pilot frequency, for each antenna port, two public guide frequencies as channel quality indication calculation pilot frequency can not be positioned on the identical subcarrier, promptly, for same antenna port, on any subcarrier, has only a public guide frequency as channel quality indication calculation pilot frequency.
Fig. 5 b is based on the public guide frequency pattern schematic diagram of long loop prefix frame structure during according to three cell cooperatives of the embodiment of the invention, promptly there are three cooperation cell to provide service, these three cooperation cell can be called cooperation cell 1, cooperation cell 2 and cooperation cell 3 for identical terminal.
Shown in Fig. 5 b, cooperation cell 1 is configured to the public guide frequency R of respective antenna port 0
0, cooperation cell 2 is configured to the public guide frequency R of respective antenna port one
1, cooperation cell 3 is configured to the public guide frequency R of respective antenna port 2
2And four public guide frequency R in the selection antenna port 0
0As channel quality indication calculation pilot frequency, four public guide frequency R in the antenna port 1
1As channel quality indication calculation pilot frequency, four public guide frequency R in the antenna port 2
2As channel quality indication calculation pilot frequency, for each antenna port, two public guide frequencies as channel quality indication calculation pilot frequency can not be positioned on the identical subcarrier, promptly, for same antenna port, on any subcarrier, has only a public guide frequency as channel quality indication calculation pilot frequency.
Example 4
Fig. 6 a is based on the public guide frequency pattern schematic diagram of normal cyclic prefix frame structure during according to four cell cooperatives of the embodiment of the invention, promptly, in this example, there are four cooperation cell to provide service for identical terminal, clear in order to describe, these four cooperation cell can be called cooperation cell 1, cooperation cell 2, cooperation cell 3 and cooperation cell 4.
Shown in Fig. 6 a, cooperation cell 1 is configured to the public guide frequency R of respective antenna port 0
0, cooperation cell 2 is configured to the public guide frequency R of respective antenna port one
1, cooperation cell 3 is configured to the public guide frequency R of respective antenna port 2
2, cooperation cell 4 is configured to the public guide frequency R of respective antenna port 3
3And four public guide frequency R in the selection antenna port 0
0As channel quality indication calculation pilot frequency, four public guide frequency R in the antenna port 1
1As channel quality indication calculation pilot frequency, two public guide frequency R in the antenna port 2
2As channel quality indication calculation pilot frequency, two public guide frequency R in the antenna port 3
3As channel quality indication calculation pilot frequency, for each antenna port, two public guide frequencies as channel quality indication calculation pilot frequency can not be positioned on the identical subcarrier, promptly, for same antenna port, on any subcarrier, has only a public guide frequency as channel quality indication calculation pilot frequency.
Fig. 6 b is based on the public guide frequency pattern schematic diagram of long loop prefix frame structure during according to four cell cooperatives of the embodiment of the invention, promptly there are four cooperation cell to provide service, these four cooperation cell can be called cooperation cell 1, cooperation cell 2, cooperation cell 3 and cooperation cell 4 for identical terminal.
Shown in Fig. 6 b, cooperation cell 1 is configured to the public guide frequency R of respective antenna port 0
0, cooperation cell 2 is configured to the public guide frequency R of respective antenna port one
1, cooperation cell 3 is configured to the public guide frequency R of respective antenna port 2
2, cooperation cell 4 is configured to the public guide frequency R of respective antenna port 3
3And four public guide frequency R in the selection antenna port 0
0As channel quality indication calculation pilot frequency, four public guide frequency R in the antenna port 1
1As channel quality indication calculation pilot frequency, two public guide frequency R in the antenna port 2
2As channel quality indication calculation pilot frequency, two public guide frequency R in the antenna port 3
3As channel quality indication calculation pilot frequency, for each antenna port, two public guide frequencies as channel quality indication calculation pilot frequency can not be positioned on the identical subcarrier, promptly, for same antenna port, on any subcarrier, has only a public guide frequency as channel quality indication calculation pilot frequency.
Example 5
Fig. 7 a is based on the public guide frequency pattern schematic diagram of normal cyclic prefix frame structure during according to four groups of cell cooperatives of the embodiment of the invention, promptly, in this example, there are four groups of cooperation cell to provide service for identical terminal, clear in order to describe, these four groups of cooperation cell can be called first group of cooperation cell, second group of cooperation cell, the 3rd group of cooperation cell and the 4th group of cooperation cell.
Shown in Fig. 7 a, first group of cooperation cell is configured to the public guide frequency R of respective antenna port 0
0, second group of cooperation cell is configured to the public guide frequency R of respective antenna port one
1, the 3rd group of cooperation cell is configured to the public guide frequency R of respective antenna port 2
2, the 4th group of cooperation cell is configured to the public guide frequency R of respective antenna port 3
3And all public guide frequencies that comprise in five the OFDM symbols of first OFDM symbol to the in the Physical Resource Block of normal cyclic prefix frame structure are set to channel quality indication calculation pilot frequency.
Fig. 7 b is based on the public guide frequency pattern schematic diagram of long loop prefix frame structure during according to four groups of cell cooperatives of the embodiment of the invention, promptly there are four groups of cooperation cell to provide service for identical terminal, these four cooperation cell can be called first group of cooperation cell, second group of cooperation cell, the 3rd group of cooperation cell and the 4th group of cooperation cell 4, all public guide frequencies that comprise in four the OFDM symbols of first OFDM symbol to the in the Physical Resource Block of long loop prefix frame structure are set to channel quality indication calculation pilot frequency.Shown in Fig. 7 b, first group of cooperation cell is configured to the public guide frequency R of respective antenna port 0
0, second group of cooperation cell is configured to the public guide frequency R of respective antenna port one
1, the 3rd group of cooperation cell is configured to the public guide frequency R of respective antenna port 2
2, the 4th group of cooperation cell is configured to the public guide frequency R of respective antenna port 3
3
Alternatively, conflict for fear of the different districts pilot frequency locations, the consistency of assurance and existing system design, transmitting terminal (for example, the base station end) before the transmitting channel quality indication calculation pilot frequency, the pilot tone frequency domain side-play amount that can determine according to high level is earlier carried out the displacement of frequency domain to the channel quality indication calculation pilot frequency of different cooperation cell, for example, can carry out frequency domain displacement (concrete displacement mode can have multiple, enumerates no longer one by one) here according to cell ID (cell ID) delivery 3 resulting values.Afterwards, after portable terminal receives channel quality indication calculation pilot frequency, can be (promptly according to its sub-district, place, the sub-district at this portable terminal place) sign determines that transmitting terminal to the displacement mode of channel quality indication calculation pilot frequency (for example, determine concrete shift value), and after thus channel quality indication calculation pilot frequency being carried out reverse frequency domain displacement, just can access the preceding channel quality indication calculation pilot frequency of displacement, pilot tone pattern according to this calculation pilot frequency extracts pilot tone, and the measuring and calculating channel quality indication (CQI) information.
On the other hand, in order to simplify the pilot tone mapping process of cooperation cell, only shine upon at frequency domain, and do not carry out the frequency domain displacement according to above-mentioned pilot tone pattern for different cooperation cell.Like this, after portable terminal receives channel quality indication calculation pilot frequency, can be directly extract pilot tone according to the pilot tone pattern of described channel quality indication calculation pilot frequency, and the measuring and calculating channel quality indication (CQI) information.
By means of above-mentioned processing, by the measuring and calculating foundation that the pilot signal of part public guide frequency in the COMP technology is indicated as channel quality, can reduce the expense of pilot tone, improve the treatment effeciency of system; And this method can be obtained the channel quality indication (CQI) information on the full bandwidth, does not change existing pilot tone pattern, and is less to systematic influence.
Device embodiment
In the present embodiment, provide a kind of mapping device based on channel quality indication calculation pilot frequency.
As shown in Figure 8, the mapping device based on channel quality indication calculation pilot frequency according to present embodiment comprises: configuration module 10 and mapping block 20.
The function of each module of installing shown in Fig. 8 is as follows:
Above-mentioned configuration module 10 can be configured to channel quality indication calculation pilot frequency with the part public guide frequency, and for example, the quantity of part public guide frequency can be quantity such as two, four; In addition, all public guide frequencies that comprise in first OFDM symbol of each subcarrier and second the OFDM symbol in can also Physical Resource Block are set to channel quality indication calculation pilot frequency; The quantity of a plurality of sub-districts is 3, and for one of them sub-district, the quantity of part public guide frequency is four, and for two other sub-district, the quantity of part public guide frequency is two.
Wherein, channel quality indication calculation pilot frequency can be mapped to the OFDM symbol of other quantity, for example, all public guide frequencies that comprise in five OFDM symbols of first OFDM symbol to the in can the Physical Resource Block of normal cyclic prefix structure are set to channel quality indication calculation pilot frequency, and all public guide frequencies that comprise in four the OFDM symbols of first OFDM symbol to the in can also the Physical Resource Block of long loop prefix structure are set to channel quality indication calculation pilot frequency.
This device can shine upon and transmission according to reference Fig. 3 a, Fig. 3 b, Fig. 4 a, Fig. 4 b, Fig. 5 a, Fig. 5 b, Fig. 6 a, Fig. 6 b, Fig. 7 a, the described processing of Fig. 7 b equally, describes before its concrete processing procedure, no longer repeats here.
By this device, can reduce the expense of pilot tone, improve the treatment effeciency of system; And this method can be obtained the channel quality indication (CQI) information on the full bandwidth, does not change existing pilot tone pattern, and is less to systematic influence.
As mentioned above, by means of the mapping scheme based on channel quality indication calculation pilot frequency provided by the invention, in the COMP technology, by the measuring and calculating foundation that the pilot signal of part public guide frequency is indicated as channel quality, can reduce the expense of pilot tone, improve the treatment effeciency of system; And this method can be obtained the channel quality indication (CQI) information on the full bandwidth, does not change existing pilot tone pattern, and is less to systematic influence.
The above is the preferred embodiments of the present invention only, is not limited to the present invention, and for a person skilled in the art, the present invention can have various changes and variation.Within the spirit and principles in the present invention all, any modification of being done, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (11)
1. the mapping method based on channel quality indication calculation pilot frequency is characterized in that, comprising:
For one or one group of sub-district, the part public guide frequency that only shines upon an antenna port is as channel quality indication calculation pilot frequency, and the signal of described channel quality indication calculation pilot frequency is used for the parameter of calculating channel quality indication.
2. method according to claim 1 is characterized in that, a described antenna port is corresponding to described one or one group of sub-district, and described one or one group of sub-district are only corresponding to a described antenna port.
3. method according to claim 1 is characterized in that, the quantity of described part public guide frequency is two or four.
4. method according to claim 1 is characterized in that, the part public guide frequency in described a plurality of public guide frequencies is configured to channel quality indication calculation pilot frequency comprises:
All public guide frequencies that comprise in first OFDM symbol in the Physical Resource Block and second the OFDM symbol are set to channel quality indication calculation pilot frequency.
5. method according to claim 1 is characterized in that, the quantity of described a plurality of sub-districts is 3, and for one of them sub-district, the quantity of described part public guide frequency is four, and for two other sub-district, the quantity of described part public guide frequency is two.
6. method according to claim 1 is characterized in that, the part public guide frequency in described a plurality of public guide frequencies is configured to channel quality indication calculation pilot frequency comprises:
All public guide frequencies that comprise in five OFDM symbols of first OFDM symbol to the in the Physical Resource Block of normal cyclic prefix structure are set to channel quality indication calculation pilot frequency.
7. method according to claim 1 is characterized in that, the part public guide frequency in described a plurality of public guide frequencies is configured to channel quality indication calculation pilot frequency comprises:
All public guide frequencies that comprise in four OFDM symbols of first OFDM symbol to the in the Physical Resource Block of long loop prefix structure are set to channel quality indication calculation pilot frequency.
8. according to each described method in the claim 1 to 7, it is characterized in that the quantity of the part public guide frequency of each the sub-district correspondence in described a plurality of sub-districts is all inequality, perhaps part is identical, and is perhaps all identical.
9. according to each described method in the claim 1 to 7, it is characterized in that,
The pilot tone frequency domain side-play amount of determining according to high level is carried out the frequency domain displacement to the described channel quality indication calculation pilot frequency of mapping, the described channel quality indication calculation pilot frequency after described or the displacement of one group of sub-district emission frequency domain;
Channel quality indication calculation pilot frequency mapping pattern after portable terminal is shifted according to frequency domain is extracted pilot tone, and the measuring and calculating channel quality indication (CQI) information.
10. according to each described method in the claim 1 to 7, it is characterized in that, further comprise:
Portable terminal receives described channel quality indication calculation pilot frequency, according to the pilot tone pattern extraction pilot tone of described channel quality indication calculation pilot frequency, and the measuring and calculating channel quality indication (CQI) information.
11. the mapping device based on channel quality indication calculation pilot frequency is characterized in that, comprising:
Configuration module, the road public guide frequency that is used for belonging to an antenna port is configured to corresponding one or one group of sub-district;
Mapping block, be used for described one or one group of sub-district, part public guide frequency in described a plurality of public guide frequencies of only mapping correspondence is as channel quality indication calculation pilot frequency, and wherein, the signal of described channel quality indication calculation pilot frequency is used for the parameter of calculating channel quality indication.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910007110.XA CN101795148B (en) | 2009-02-03 | 2009-02-03 | Mapping method and device based on channel quality indication calculation pilot frequency |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910007110.XA CN101795148B (en) | 2009-02-03 | 2009-02-03 | Mapping method and device based on channel quality indication calculation pilot frequency |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101795148A true CN101795148A (en) | 2010-08-04 |
| CN101795148B CN101795148B (en) | 2014-07-16 |
Family
ID=42587593
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200910007110.XA Active CN101795148B (en) | 2009-02-03 | 2009-02-03 | Mapping method and device based on channel quality indication calculation pilot frequency |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101795148B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108604965A (en) * | 2016-02-02 | 2018-09-28 | 华为技术有限公司 | The System and method for of scheduling of user terminals resource and pilot frequency design into multi-user wireless network |
| CN111404657A (en) * | 2020-03-19 | 2020-07-10 | 东北电力大学 | Pilot frequency map design method based on channel quality in OFDM system |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101019362A (en) * | 2004-07-16 | 2007-08-15 | 高通股份有限公司 | Rate prediction in fractional reuse systems |
| CN101090558A (en) * | 2006-06-15 | 2007-12-19 | 华为技术有限公司 | Sending method for uplink pilot signal and its system |
-
2009
- 2009-02-03 CN CN200910007110.XA patent/CN101795148B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101019362A (en) * | 2004-07-16 | 2007-08-15 | 高通股份有限公司 | Rate prediction in fractional reuse systems |
| CN101090558A (en) * | 2006-06-15 | 2007-12-19 | 华为技术有限公司 | Sending method for uplink pilot signal and its system |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108604965A (en) * | 2016-02-02 | 2018-09-28 | 华为技术有限公司 | The System and method for of scheduling of user terminals resource and pilot frequency design into multi-user wireless network |
| CN111404657A (en) * | 2020-03-19 | 2020-07-10 | 东北电力大学 | Pilot frequency map design method based on channel quality in OFDM system |
| CN111404657B (en) * | 2020-03-19 | 2022-08-09 | 东北电力大学 | Pilot frequency map design method based on channel quality in OFDM system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101795148B (en) | 2014-07-16 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR101079387B1 (en) | Uplink access request in an ofdm communication environment | |
| CN101867938B (en) | Method and device for configuring uplink reference signal of multipoint cooperative transmission | |
| CN101895921B (en) | Method for selecting coordinated multipoint cell | |
| KR100899744B1 (en) | Apparatus and method for transmitting/receiving control channel message in mobile telecommunication system | |
| CN101771444B (en) | Method for setting reference signals in multi-antenna system and base station | |
| CN1879325B (en) | Apparatus and method for transmitting and receiving common control information in a wireless communication system | |
| CN101433007B (en) | Channel quality signaling | |
| CN1996806A (en) | Device and method for data transfer in the competitive resource of the wireless communication system | |
| CN101039500B (en) | OFDM-based cell user communication method and system thereof | |
| CN102118868A (en) | Mapping method and system of cell resources in cooperative measurement set during multipoint cooperative transmission | |
| CN101385262A (en) | Apparatus and method for allocating resources and performing communication in a wireless communication system | |
| CN104982001A (en) | Method and apparatus for reference symbol reception | |
| CN106877984B (en) | A kind of method and apparatus in narrowband wireless transmission | |
| CN101287261A (en) | Measuring method for quality of wideband wireless channel | |
| CN102299892A (en) | Setting and using method for key parameters in communication system and device | |
| CN101605382B (en) | Method and device for coordinating intercell interference | |
| CN101772148A (en) | Auxiliary synchronizing channel configuring method and device, and subcarrier mapping method and device | |
| CN103840932A (en) | Physical broadcast channel transmission method, equipment and system | |
| CN101841851B (en) | Method and device for multi-cell data transmission | |
| CN101784114B (en) | Multi-cell synergetic data transmission method, system and device | |
| EP1695502B1 (en) | Method and apparatus in a cellular telecommunications system | |
| CN101753514B (en) | Synchronous communication channel realization method, synchronous accession method and mobile terminal | |
| CN101795148B (en) | Mapping method and device based on channel quality indication calculation pilot frequency | |
| CN101946435B (en) | Method for signaling uplink system configuration information | |
| CN101777942B (en) | Data transmission method, system and device for multi-cooperation district |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Application publication date: 20100804 Assignee: SHENZHEN ZTE MICROELECTRONICS TECHNOLOGY CO., LTD. Assignor: ZTE Corporation Contract record no.: 2015440020319 Denomination of invention: Mapping method and device based on channel quality indication calculation pilot frequency Granted publication date: 20140716 License type: Common License Record date: 20151123 |
|
| LICC | Enforcement, change and cancellation of record of contracts on the licence for exploitation of a patent or utility model |