CN101795148B - 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
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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 channel radio system of new generation, by coordinated multipoint transmission (the Coordinate Multipoint Transmission and Reception of network level, referred to as COMP), improve the throughput of Cell Edge User, and the interference coordination that carries out minizone, for example, advanced long-term evolution system (Long-Term Evolution advance, referred to as LTE-Advance), senior international wireless communication system (International MobileTelecommunication advance, referred to as IMT-Advance) etc.
Third generation partner program (The Third generation Partner Project, referred to as 3GPP) LTE system in, descending special pilot frequency can be used as mobile terminal (UserEquipment, referred to as UE) 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 mobile terminal and 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 special configuration of each mobile terminal, only on the running time-frequency resource distributing for mobile terminal, send, if indication (the Channel Quality Indicator using descending special pilot frequency as channel quality, referred to as CQI) Basis, can cause the scheduling of resource of system cannot effectively obtain comprehensive channel quality information.
Proposed at present to utilize public guide frequency as the method for channel quality indication, it is main by all public guide frequencies corresponding to each community are all sent to receiving terminal, receiving terminal is usingd all public guide frequencies of receiving as the Basis of channel quality indication, obtains channel quality information.Although can obtain complete channel quality information like this, the expense of pilot tone is larger, can affect the whole efficiency of system.
Summary of the invention
Consider in correlation technique, exist utilize all public guide frequencies to indicate as channel quality time, cause the expense of pilot tone larger, affect 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 a Huo Yizu community, only shine upon the part public guide frequency of an antenna port as channel quality indication calculation pilot frequency, the signal of channel quality indication calculation pilot frequency is for calculating the parameter of channel quality indication.
Wherein, an antenna port is corresponding to a Huo Yizu community, and a Huo Yizu community is 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 first OFDM symbol in Physical Resource Block and second OFDM symbol comprise are set to channel quality indication calculation pilot frequency.
In addition, the quantity of a plurality of communities can be 3, and for one of them community, the quantity of part public guide frequency is four, and for two other community, 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 five the OFDM symbols of first OFDM symbol to the in the Physical Resource Block of normal cyclic prefix structure comprise 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 four the OFDM symbols of first OFDM symbol to the in the Physical Resource Block of long loop prefix structure comprise are set to channel quality indication calculation pilot frequency.
Alternatively, the quantity of the part public guide frequency that each community in a plurality of communities is corresponding is all not identical, or part is identical, or all identical.
In the method, can also to the channel quality indication calculation pilot frequency of mapping, carry out frequency domain displacement according to the definite pilot tone frequency domain side-play amount of high level, the channel quality indication calculation pilot frequency after the displacement of a Huo Yizu community transmitting frequency domain; Channel quality indication calculation pilot frequency mapping pattern after mobile terminal is shifted according to frequency domain is extracted pilot tone, and calculates channel quality indication (CQI) information.
On the other hand, mobile 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 calculate 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, is configured to a corresponding Huo Yizu community for belonging to an antenna port Yi road public guide frequency; Mapping block, for to a Huo Yizu community, only the part public guide frequency in a plurality of public guide frequencies corresponding to mapping is as channel quality indication calculation pilot frequency, and wherein, the signal of channel quality indication calculation pilot frequency is for calculating the parameter of channel quality indication.
By above-mentioned at least one technical scheme of the present invention, in COMP technology, the Basis by the indication using the pilot signal of part public guide frequency as channel quality, than prior art, can reduce the expense of pilot tone, improves the treatment effeciency of system; And can make terminal obtain the channel quality indication (CQI) information on full bandwidth, thereby can guarantee that original pilot tone pattern is not changed, less to systematic influence.
Accompanying drawing explanation
Accompanying drawing is used to provide a further understanding of the present invention, and forms a part for specification, for explaining the present invention, is not construed as limiting the invention together with embodiments of the present invention.In the accompanying drawings:
Fig. 1 a is the public guide frequency pattern schematic diagram based on 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 according to the flow chart of the mapping method based on channel quality indication calculation pilot frequency of the inventive method embodiment;
Fig. 3 a is the schematic diagram of the example 1 of the public guide frequency pattern based on normal cyclic prefix frame structure during according to four of the embodiment of the present invention cell cooperatives;
Fig. 3 b is the schematic diagram of the example 1 of the public guide frequency pattern based on long loop prefix frame structure during according to four of the embodiment of the present invention cell cooperatives;
Fig. 4 a is the schematic diagram of the example 2 of the public guide frequency pattern based on normal cyclic prefix frame structure during according to four of the embodiment of the present invention cell cooperatives;
Fig. 4 b is the schematic diagram of the example 2 of the public guide frequency pattern based on long loop prefix frame structure during according to four of the embodiment of the present invention cell cooperatives;
Fig. 5 a is the schematic diagram of the example 3 of the public guide frequency pattern based on normal cyclic prefix frame structure during according to three of the embodiment of the present invention cell cooperatives;
Fig. 5 b is the schematic diagram of the example 3 of the public guide frequency pattern based on long loop prefix frame structure during according to three of the embodiment of the present invention cell cooperatives;
Fig. 6 a is the schematic diagram of the example 4 of the public guide frequency pattern based on normal cyclic prefix frame structure during according to four of the embodiment of the present invention cell cooperatives;
Fig. 6 b is the schematic diagram of the example 4 of the public guide frequency pattern based on long loop prefix frame structure during according to four of the embodiment of the present invention cell cooperatives;
Fig. 7 a is the schematic diagram of the example 5 of the public guide frequency pattern based on normal cyclic prefix frame structure during according to four of the embodiment of the present invention groups of cell cooperatives;
Fig. 7 b is the schematic diagram of the example 5 of the public guide frequency pattern based on long loop prefix frame structure during according to four of the embodiment of the present invention groups of cell cooperatives;
Fig. 8 is according to the block diagram of the mapping device based on channel quality indication calculation pilot frequency of apparatus of the present invention embodiment.
Embodiment
Functional overview
As mentioned above, for existing in prior art, using the Basis of all public guide frequencies as channel quality indication, cause the expense of pilot tone larger, affect the problem of the whole efficiency of system, propose a kind of pilot tone mapping processing scheme that is applied to channel quality indication (CQI) measuring and calculating based on coordinated multipoint transmission (COMP) technology.
At Long Term Evolution (Long-Term Evolution, referred to as LTE) in system, stipulated the public guide frequency pattern of the antenna port 4 based on normal cyclic prefix frame structure and long loop prefix frame structure, based on this, basic ideas of the present invention are: in COMP technology, the public guide frequency pattern of antenna port 4 of take is basis, to belong to an antenna port Yi road public guide frequency and be configured to corresponding at least one community (a Huo Yizu community), and, for each community, can be using the part public guide frequency in its corresponding Yi road public guide frequency as channel quality indication calculation pilot frequency, rather than using all public guide frequencies all as channel quality indication calculation pilot frequency, with this, reduce the expense of pilot tone, the efficiency of raising system.
It should be noted that, the community that hereinafter Mei road public guide frequency is corresponding can Shi Yige community, also can Shi Yizu community, in the situation of Yi road public guide frequency corresponding to Yi Zu community, Zhe Zu community can be a plurality of communities with identical many antenna processing mode and step, and these communities can be a plurality of communities (can be described as cooperation cell) of serving same terminal (can be a plurality of terminals).
In the situation that not conflicting, embodiment and the feature in embodiment in the application can combine mutually.
For the ease of understanding the embodiment of the present invention, before the explanation embodiment of the present 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 prior art 4 and antenna port 4 first by reference to the accompanying drawings.As shown in Figure 1a, in a physical resource unit of the frame structure based on normal cyclic prefix, on frequency domain, comprise 14 OFDMs (OrthogonalFrequency Division Multiplexing, referred to as OFDM) symbol, in time domain, comprise 12 subcarriers, wherein, R
0for the public guide frequency that antenna port 0 sends, R
1for the public guide frequency that antenna port 1 sends, R
2for the public guide frequency that antenna port 3 sends, R
3public guide frequency for antenna port 3 transmissions.As shown in Figure 1 b, in a physical resource unit of the frame structure based on long loop prefix, on frequency domain, comprise 12 OFDM symbols, in time domain, comprise 12 subcarriers, wherein, R
0for the public guide frequency that antenna port 0 sends, R
1for the public guide frequency that antenna port 1 sends, R
2for the public guide frequency that antenna port 3 sends, R
3public guide frequency for antenna port 3 transmissions.
Below in conjunction with accompanying drawing, describe the present invention in detail.
Embodiment of the method
According to the embodiment of the present invention, provide a kind of mapping method based on channel quality indication calculation pilot frequency.
Fig. 2 is according to the flow chart of the mapping method based on channel quality indication calculation pilot frequency of the embodiment of the present invention, and as shown in Figure 2, the method comprises the following steps (step S202 is to step S204).
Step S202, for a Huo Yizu community, only shines upon the part public guide frequency of an antenna port as channel quality indication calculation pilot frequency, and the signal of channel quality indication calculation pilot frequency is for calculating the parameter of channel quality indication; Wherein, antenna port can be corresponding to a Huo Yizu community, and each community is only corresponding to an antenna port; And the quantity of the part public guide frequency that each community in a plurality of communities is corresponding can be all not identical, also can part identical, also can be all identical.
Step S204, the channel quality indication calculation pilot frequency after transmitting mapping.
And, for same antenna port, on any subcarrier and/or any OFDM, only have one as the public guide frequency of channel quality indication calculation pilot frequency.For example, 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 in Physical Resource Block, first OFDM symbol of each subcarrier and second OFDM symbol comprise are set to channel quality indication calculation pilot frequency; The quantity of a plurality of communities is 3, and for one of them community, the quantity of part public guide frequency is four, and for two other community, 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 five OFDM symbols of first OFDM symbol to the in can the Physical Resource Block of normal cyclic prefix structure comprise are set to channel quality indication calculation pilot frequency, and all public guide frequencies that four the OFDM symbols of first OFDM symbol to the in can also the Physical Resource Block of long loop prefix structure comprise are set to channel quality indication calculation pilot frequency.
The technical scheme providing by the embodiment of the present invention, in COMP technology, by the Basis of the indication using the pilot signal of part public guide frequency as channel quality, can reduce the expense of pilot tone, improves the treatment effeciency of system.
In specific implementation process, can first be defined as same terminal provides a plurality of microzonations of service to be divided into a plurality of communities, and wherein, the plurality of community can provide service for a terminal, also can provide service for a plurality of terminals.Below in conjunction with instantiation, the pattern of channel quality indication calculation pilot frequency of the present invention is elaborated.
Example 1
Fig. 3 a is the public guide frequency pattern schematic diagram based on normal cyclic prefix frame structure during according to four of the embodiment of the present invention cell cooperatives,, in this example, there are four cooperation cell (, community mentioned above) for identical terminal provides service, in order to be described clearly, these four cooperation cell can be called to cooperation cell 1, cooperation cell 2, cooperation cell 3 and cooperation cell 4.
As shown in Figure 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
3.And select two public guide frequency R in antenna port 0
0as channel quality indication calculation pilot frequency, two public guide frequency R in antenna port 1
1as channel quality indication calculation pilot frequency, two public guide frequency R in antenna port 2
2as channel quality indication calculation pilot frequency, two public guide frequency R in 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 the public guide frequency pattern schematic diagram based on long loop prefix frame structure during according to four of the embodiment of the present invention cell cooperatives, there are four cooperation cell for identical terminal provides service, these four cooperation cell are called to cooperation cell 1, cooperation cell 2, cooperation cell 3 and cooperation cell 4.
As shown in Figure 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
3.And select two public guide frequency R in antenna port 0
0as channel quality indication calculation pilot frequency, two public guide frequency R in antenna port 1
1as channel quality indication calculation pilot frequency, two public guide frequency R in antenna port 2
2as channel quality indication calculation pilot frequency, two public guide frequency R in 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 identical subcarrier and OFDM, that is, and and for same antenna port, on any subcarrier and any OFDM, only has one as the public guide frequency of channel quality indication calculation pilot frequency.
Example 2
Fig. 4 a is the public guide frequency pattern schematic diagram based on normal cyclic prefix frame structure during according to four of the embodiment of the present invention cell cooperatives,, in this example, there are four cooperation cell to provide service for identical terminal, in order to be described clearly, these four cooperation cell can be called to cooperation cell 1, cooperation cell 2, cooperation cell 3 and cooperation cell 4.
As 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
3.And all public guide frequencies that first OFDM symbol in Physical Resource Block and second OFDM symbol comprise are set to channel quality indication calculation pilot frequency.For each antenna port, as two public guide frequencies of channel quality indication calculation pilot frequency, can not be positioned at identical OFDM upper, that is, for same antenna port, on subcarrier arbitrarily, only have one as the public guide frequency of channel quality indication calculation pilot frequency.
Fig. 4 b is the public guide frequency pattern schematic diagram based on long loop prefix frame structure during according to four of the embodiment of the present invention cell cooperatives, there are four cooperation cell for identical terminal provides service, these four cooperation cell can be called to cooperation cell 1, cooperation cell 2, cooperation cell 3 and cooperation cell 4.
As shown in Figure 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
3.And all public guide frequencies that first OFDM symbol in Physical Resource Block and second OFDM symbol comprise are set to channel quality indication calculation pilot frequency.For each antenna port, as two public guide frequencies of channel quality indication calculation pilot frequency, can not be positioned at identical OFDM upper, that is, for same antenna port, on subcarrier arbitrarily, only have one as the public guide frequency of channel quality indication calculation pilot frequency.
Example 3
Fig. 5 a is the public guide frequency pattern schematic diagram based on normal cyclic prefix frame structure during according to three of the embodiment of the present invention cell cooperatives,, in this example, there are three cooperation cell to provide service for identical terminal, in order to be described clearly, these three cooperation cell can be called to cooperation cell 1, cooperation cell 2 and cooperation cell 3.
As shown in Figure 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
2.And select four public guide frequency R in antenna port 0
0as channel quality indication calculation pilot frequency, four public guide frequency R in antenna port 1
1as channel quality indication calculation pilot frequency, four public guide frequency R in 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 identical subcarrier,, for same antenna port, on any subcarrier, only has one as the public guide frequency of channel quality indication calculation pilot frequency.
Fig. 5 b is the public guide frequency pattern schematic diagram based on long loop prefix frame structure during according to three of the embodiment of the present invention cell cooperatives, there are three cooperation cell for identical terminal provides service, these three cooperation cell can be called to cooperation cell 1, cooperation cell 2 and cooperation cell 3.
As shown in Figure 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
2.And select four public guide frequency R in antenna port 0
0as channel quality indication calculation pilot frequency, four public guide frequency R in antenna port 1
1as channel quality indication calculation pilot frequency, four public guide frequency R in 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 identical subcarrier,, for same antenna port, on any subcarrier, only has one as the public guide frequency of channel quality indication calculation pilot frequency.
Example 4
Fig. 6 a is the public guide frequency pattern schematic diagram based on normal cyclic prefix frame structure during according to four of the embodiment of the present invention cell cooperatives,, in this example, there are four cooperation cell to provide service for identical terminal, in order to be described clearly, these four cooperation cell can be called to cooperation cell 1, cooperation cell 2, cooperation cell 3 and cooperation cell 4.
As shown in Figure 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
3.And select four public guide frequency R in antenna port 0
0as channel quality indication calculation pilot frequency, four public guide frequency R in antenna port 1
1as channel quality indication calculation pilot frequency, two public guide frequency R in antenna port 2
2as channel quality indication calculation pilot frequency, two public guide frequency R in 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 identical subcarrier,, for same antenna port, on any subcarrier, only has one as the public guide frequency of channel quality indication calculation pilot frequency.
Fig. 6 b is the public guide frequency pattern schematic diagram based on long loop prefix frame structure during according to four of the embodiment of the present invention cell cooperatives, there are four cooperation cell for identical terminal provides service, these four cooperation cell can be called to cooperation cell 1, cooperation cell 2, cooperation cell 3 and cooperation cell 4.
As shown in Figure 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
3.And select four public guide frequency R in antenna port 0
0as channel quality indication calculation pilot frequency, four public guide frequency R in antenna port 1
1as channel quality indication calculation pilot frequency, two public guide frequency R in antenna port 2
2as channel quality indication calculation pilot frequency, two public guide frequency R in 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 identical subcarrier,, for same antenna port, on any subcarrier, only has one as the public guide frequency of channel quality indication calculation pilot frequency.
Example 5
Fig. 7 a is the public guide frequency pattern schematic diagram based on normal cyclic prefix frame structure during according to four of the embodiment of the present invention groups of cell cooperatives,, in this example, there are four groups of cooperation cell to provide service for identical terminal, in order to be described clearly, these four groups of cooperation cell can be called to first group of cooperation cell, second group of cooperation cell, the 3rd group of cooperation cell and the 4th group of cooperation cell.
As shown in Figure 7a, 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.And all public guide frequencies that five the OFDM symbols of first OFDM symbol to the in the Physical Resource Block of normal cyclic prefix frame structure comprise are set to channel quality indication calculation pilot frequency.
Fig. 7 b is the public guide frequency pattern schematic diagram based on long loop prefix frame structure during according to four of the embodiment of the present invention groups of cell cooperatives, there are four groups of cooperation cell to provide service for identical terminal, these four cooperation cell can be called to 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 four the OFDM symbols of first OFDM symbol to the in the Physical Resource Block of long loop prefix frame structure comprise are set to channel quality indication calculation pilot frequency.As shown in Figure 7b, 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, for fear of different districts pilot frequency locations, conflict, the consistency of assurance and existing system design, transmitting terminal (for example, base station end) before transmitting channel quality indication calculation pilot frequency, can first according to the definite pilot tone frequency domain side-play amount of high level, to the channel quality indication calculation pilot frequency of different cooperation cell, carry out the displacement of frequency domain, for example, can carry out frequency domain displacement (concrete displacement mode can have multiple, will not enumerate) here according to the resulting value of cell ID (cell ID) delivery 3.Afterwards, at mobile terminal, receive after channel quality indication calculation pilot frequency, can be according to its community, place (, the community at this mobile 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 thus channel quality indication calculation pilot frequency is carried out after reverse frequency domain displacement, just can access the front channel quality indication calculation pilot frequency of displacement, according to the pilot tone pattern of this calculation pilot frequency, extract pilot tone, and calculate channel quality indication (CQI) information.
On the other hand, in order to simplify the pilot tone mapping process of cooperation cell, for different cooperation cell, at frequency domain, only according to above-mentioned pilot tone pattern, shine upon, and do not carry out frequency domain displacement.Like this, at mobile terminal, receive after channel quality indication calculation pilot frequency, can directly according to the pilot tone pattern of described channel quality indication calculation pilot frequency, extract pilot tone, and calculate channel quality indication (CQI) information.
By means of above-mentioned processing, by the Basis of the indication using the pilot signal of part public guide frequency in COMP technology as channel quality, can reduce the expense of pilot tone, improve the treatment effeciency of system; And the method can be obtained the channel quality indication (CQI) information on full bandwidth, do not change existing pilot tone pattern, 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, according to the mapping device based on channel quality indication calculation pilot frequency of the present embodiment, comprise: configuration module 10 and mapping block 20.
The function of the modules installing shown in Fig. 8 is as follows:
Configuration module 10, is configured to a corresponding Huo Yizu community for belonging to an antenna port Yi road public guide frequency;
Mapping block 20, be connected to configuration module 10, for a Huo Yizu community, only shine upon part public guide frequency in corresponding a plurality of public guide frequencies as channel quality indication calculation pilot frequency, wherein, the signal of channel quality indication calculation pilot frequency is for calculating the parameter of channel quality indication.And the quantity of the part public guide frequency that each community in a plurality of communities is corresponding can be all not identical, also can part identical, also can be all identical.
Above-mentioned configuration module 10 can be configured to channel quality indication calculation pilot frequency by part public guide frequency, and for example, the quantity of part public guide frequency can be the quantity such as two, four; In addition all public guide frequencies that in, can also Physical Resource Block, first OFDM symbol of each subcarrier and second OFDM symbol comprise are set to channel quality indication calculation pilot frequency; The quantity of a plurality of communities is 3, and for one of them community, the quantity of part public guide frequency is four, and for two other community, 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 five OFDM symbols of first OFDM symbol to the in can the Physical Resource Block of normal cyclic prefix structure comprise are set to channel quality indication calculation pilot frequency, and all public guide frequencies that four the OFDM symbols of first OFDM symbol to the in can also the Physical Resource Block of long loop prefix structure comprise are set to channel quality indication calculation pilot frequency.
This device can be described before its concrete processing procedure according to shining upon with reference to 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 and sending equally, no longer repeats here.
By this device, can reduce the expense of pilot tone, improve the treatment effeciency of system; And the method can be obtained the channel quality indication (CQI) information on full bandwidth, do not change existing pilot tone pattern, 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 COMP technology, by the Basis of the indication using the pilot signal of part public guide frequency as channel quality, can reduce the expense of pilot tone, improve the treatment effeciency of system; And the method can be obtained the channel quality indication (CQI) information on full bandwidth, do not change existing pilot tone pattern, less to systematic influence.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any modification of doing, be equal to replacement, improvement etc., within all should being included in 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 a Huo Yizu community, only shine upon the part public guide frequency of an antenna port as channel quality indication calculation pilot frequency, the signal of described channel quality indication calculation pilot frequency is for calculating the parameter of channel quality indication.
2. method according to claim 1, is characterized in that, a described antenna port is corresponding to a described Huo Yizu community, and a described Huo Yizu community is 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 a plurality of public guide frequencies is configured to channel quality indication calculation pilot frequency and comprises:
All public guide frequencies that first OFDM symbol in Physical Resource Block and second OFDM symbol comprise are set to channel quality indication calculation pilot frequency.
5. method according to claim 1, is characterized in that, the quantity of described Yi Zu community is 3, and for one of them community, the quantity of described part public guide frequency is four, and for two other community, 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 a plurality of public guide frequencies is configured to channel quality indication calculation pilot frequency and comprises:
All public guide frequencies that five OFDM symbols of first OFDM symbol to the in the Physical Resource Block of normal cyclic prefix structure comprise 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 a plurality of public guide frequencies is configured to channel quality indication calculation pilot frequency and comprises:
All public guide frequencies that four OFDM symbols of first OFDM symbol to the in the Physical Resource Block of long loop prefix structure comprise are set to channel quality indication calculation pilot frequency.
8. according to the method described in any one in claim 1 to 7, it is characterized in that, the quantity of the part public guide frequency that each community in described Yi Zu community is corresponding is all not identical, or part is identical, or all identical.
9. according to the method described in any one in claim 1 to 7, it is characterized in that,
According to the pilot tone frequency domain side-play amount that high level is definite, the described channel quality indication calculation pilot frequency of mapping is carried out to frequency domain displacement, the described channel quality indication calculation pilot frequency after the displacement of described Huo Yizu community transmitting frequency domain;
Channel quality indication calculation pilot frequency mapping pattern after mobile terminal is shifted according to frequency domain is extracted pilot tone, and calculates channel quality indication (CQI) information.
10. according to the method described in any one in claim 1 to 7, it is characterized in that, further comprise:
Mobile terminal receives described channel quality indication calculation pilot frequency, extracts pilot tone, and calculate channel quality indication (CQI) information according to the pilot tone pattern of described channel quality indication calculation pilot frequency.
11. 1 kinds of mapping devices based on channel quality indication calculation pilot frequency, is characterized in that, comprising:
Configuration module, is configured to a corresponding Huo Yizu community for belonging to an antenna port Yi road public guide frequency;
Mapping block, be used for a described Huo Yizu community, 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 described channel quality indication calculation pilot frequency is for calculating the parameter of channel quality indication.
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| 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 |
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| 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 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| 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 |
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