CN101800570B - Method for obtaining channel quality indication (CQI) information - Google Patents
Method for obtaining channel quality indication (CQI) information Download PDFInfo
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- CN101800570B CN101800570B CN 200910077969 CN200910077969A CN101800570B CN 101800570 B CN101800570 B CN 101800570B CN 200910077969 CN200910077969 CN 200910077969 CN 200910077969 A CN200910077969 A CN 200910077969A CN 101800570 B CN101800570 B CN 101800570B
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Abstract
The invention discloses a method for obtaining channel quality indication (CQI) information, which comprises the steps of: setting a mapping relationship between a CQI measurement pilot frequency and a physical resource element with the pilot frequency of an antenna port n in a public pilot frequency; and obtaining the CQI information by a receiver according to the CQI measurement pilot frequency, wherein n is 0, 1, 2, or 3. More particularly, the CQI measurement pilot frequency takes some part of the public pilot frequency which is transmitted on the antenna port n as the CQI measurement pilot frequency on the basis of the public pilot frequency of each cooperative small area. Only some part of the public pilot frequency is transmitted to form the channel measurement so as to obtain the CQI information, so that the method greatly saves the overhead of the pilot frequency; and the CQI measurement pilot frequency is set on the basis of the existing public pilot frequency pattern, so that the method can not destroy the existing public pilot frequency pattern, has less impact on a system, and can obtain the CQI information on a whole bandwidth.
Description
Technical field
The present invention relates to wireless communication technology field, relate in particular to a kind of method of obtaining channel quality indication (CQI, Channel Quality Indication) information.
Background technology
CQI is that in communication system, receiver such as user terminal (UE) obtain according to the pilot tone from transmitter such as base station node B, then feeds back to again the channel condition information of transmitter.The CQI information that transmitter feeds back receiver corresponds to the fast size of certain transmission, coded system and modulation system, and on this basis, transmitter is that receiver carries out Resource Distribution and Schedule according to CQI information.
In order to improve the throughput of residential quarter, carry out the interference coordination of minizone, the new generation of wireless way system, as advanced long-term evolution system (LTE-Advance, Long-Term Evolution advance), senior international wireless communication system (IMT-Advance, International Mobile Telecommunication advance) etc. all introduce the cooperation transmission technology (Coordinate Multipoint Transmission andReception is referred to as COMP) between network level.Defined in 3GPP LTE the special demodulating signal of descending special pilot frequency as user terminal (UE), this pilot signal need not to send the weights information of many antenna weightings, can greatly save the Signalling exchange between UE and base station node B.When multi-cell cooperating, adopt dedicated pilot can greatly reduce UE to Signalling exchange between a plurality of base station node B, so that the flexible switching of the various technology of eating dishes without rice or wine as the demodulation pilot frequency of UE.
But descending special pilot frequency is each UE special configuration, only send on the running time-frequency resource that this UE distributes, if with descending special pilot frequency as the foundation of obtaining CQI information, will make the scheduling of resource of system can't effectively obtain comprehensive channel quality information.
In addition, if utilize public guide frequency to obtain CQI information, can greatly increase the pilot-frequency expense of system.
Summary of the invention
In view of this, main purpose of the present invention is to provide a kind of method of obtaining channel quality indication (CQI) information, can guarantee greatly to save pilot-frequency expense when obtaining comprehensive channel quality information.
For achieving the above object, technical scheme of the present invention is achieved in that
The invention provides a kind of method of obtaining channel quality indicator CQI information, comprising:
Utilize the pilot tone of antenna port n in public guide frequency, the mapping relations of CQI calculation pilot frequency and physical resource element are set, obtain the CQI calculation pilot frequency; Receiver obtains CQI information according to the CQI calculation pilot frequency;
Wherein, n gets 0 or 1 or 2 or 3.
In such scheme, the described pilot tone of utilizing antenna port n in public guide frequency, the mapping relations that CQI calculation pilot frequency and physical resource element are set are: respectively take the public guide frequency of each cooperation cell as the basis, with the part of the public guide frequency that sends on antenna port n as the CQI calculation pilot frequency.
In such scheme, the part of described public guide frequency is: with corresponding several cooperation cell of certain antenna port in the described public guide frequency of each residential quarter, each physical resource element on the cooperation resource only sends the frequency pilot sign of this road public guide frequency, the frequency pilot sign that each cooperation cell is corresponding different staggers on frequency domain mutually.
In such scheme, described cooperation cell comprises cooperation cell 1, cooperation cell 2, cooperation cell 3 and cooperation cell 4, specifically comprises: with the corresponding cooperation cell 1 of pilot tone difference of described antenna port n, cooperation cell 2, cooperation cell 3 and cooperation cell 4; Select wherein two CQI calculation pilot frequencies as a cooperation cell of the public guide frequency of antenna port n, and guarantee that the CQI calculation pilot frequency of each cooperation cell evenly staggers.
In such scheme, described cooperation cell 1 uses first and the 6th physical resource element of sending public guide frequency on antenna port n as the CQI calculation pilot frequency; Described cooperation cell 2 uses second of sending public guide frequency on antenna port n and the 5th physical resource element as the CQI calculation pilot frequency; Described cooperation cell 3 uses the 3rd of sending public guide frequency on antenna port n and the 8th physical resource element as the CQI calculation pilot frequency; Described cooperation cell 4 uses the 4th of sending public guide frequency on antenna port n and the 7th physical resource element as the CQI calculation pilot frequency.
In such scheme, described cooperation cell comprises cooperation cell 1, cooperation cell 2 and cooperation cell 3, specifically comprises: described cooperation cell 1 uses first and the 6th physical resource element of sending public guide frequency on antenna port n as the CQI calculation pilot frequency; Described cooperation cell 2 uses second of sending public guide frequency on antenna port n and the 5th physical resource element as the CQI calculation pilot frequency; Described cooperation cell 3 uses the 3rd of sending public guide frequency on antenna port n and the 8th physical resource element as the CQI calculation pilot frequency.
In such scheme, described cooperation cell comprises cooperation cell 1 and cooperation cell 2, specifically comprises: described cooperation cell 1 uses first and the 6th physical resource element of sending public guide frequency on antenna port n as the CQI calculation pilot frequency; Described cooperation cell 2 uses second of sending public guide frequency on antenna port n and the 5th physical resource element as the CQI calculation pilot frequency.
In such scheme, the part of described public guide frequency is: with corresponding several cooperation cell of certain antenna port in the public guide frequency of each residential quarter, each the physical resource element on the cooperation resource only sends the frequency pilot sign of this road public guide frequency.
In such scheme, described cooperation cell comprises cooperation cell 1, cooperation cell 2, cooperation cell 3 and cooperation cell 4, specifically comprises: with the corresponding cooperation cell 1 of pilot tone difference of antenna port n, cooperation cell 2, cooperation cell 3 and cooperation cell 4; Select wherein four CQI calculation pilot frequencies as a cooperation cell of the public guide frequency of antenna port n.
In such scheme, described cooperation cell 1 uses first that send public guide frequency on antenna port n, second, the 5th and the 6th physical resource element as the CQI calculation pilot frequency.
In such scheme, described cooperation cell 1 uses first that send public guide frequency on antenna port n, the 4th, the 5th and the 8th physical resource element as the CQI calculation pilot frequency.
In such scheme, described cooperation cell 1 uses second, the 3rd, the 6th of sending public guide frequency on antenna port n and the 7th physical resource element as the CQI calculation pilot frequency.
In such scheme, described cooperation cell 1 uses first that send public guide frequency on antenna port n, second, the 7th and the 8th physical resource element as the CQI calculation pilot frequency.
In such scheme, the displacement that the mapping position of described CQI calculation pilot frequency is carried out frequency domain by the different frequency hopping value in each residential quarter obtains.
In such scheme, when described frequency hopping value equates, by the frequency hopping value of high layer reset conflict districts, guarantee that the CQI calculation pilot frequency of each cooperation cell staggers mutually at frequency domain.
In such scheme, when only having two cooperation cell, CQI calculation pilot frequency corresponding to these two cooperation cell is set, when only having three cell cooperatives, CQI calculation pilot frequency corresponding to these three cooperation cell is set, four public guide frequencies shown in each cooperation cell is still shone upon.
In such scheme, the part of described public guide frequency is: each cooperation cell is according to the maximum antenna port number mapping CQI calculation pilot frequency of this residential quarter, and each antenna port only sends A frequency pilot sign, A=1 or 2 or 3 or 4.
In such scheme, according to identical mapping pattern, when only having two cooperation cell, CQI calculation pilot frequency corresponding to these two cooperation cell is set, when only having three cell cooperatives, CQI calculation pilot frequency corresponding to these three cooperation cell is set.
In such scheme, described cooperation cell 1 is used the 4th of public guide frequency on first that send public guide frequency on antenna port 0, antenna port 1, first of public guide frequency on antenna port 2, and the 4th of the public guide frequency on antenna port 3 is as the CQI calculation pilot frequency.
In such scheme, basis frequency hopping value separately is different respectively for the CQI calculation pilot frequency of described each cooperation cell, is mapped on different subcarriers.
The method also comprises: CQI calculation pilot frequency corresponding to each cooperation cell carries out respectively many antenna weightings to be processed.
As seen from the above technical solution, the present invention utilizes the pilot tone of antenna port n in public guide frequency, and the mapping relations of CQI calculation pilot frequency and physical resource element are set, to obtain the CQI calculation pilot frequency; Receiver obtains CQI information according to the CQI calculation pilot frequency.Wherein n can get 0 or 1 or 2 or 3.Specifically, CQI calculation pilot frequency of the present invention is take the public guide frequency of each cooperation cell as the basis, with the part of the public guide frequency that sends on antenna port n as the CQI calculation pilot frequency.Such as, with corresponding several cooperation cell of certain antenna port in the public guide frequency of each residential quarter, each physical resource element on the cooperation resource only sends the frequency pilot sign of this road public guide frequency, and frequency pilot sign corresponding to each cooperation cell staggers on frequency domain mutually.For another example, with corresponding several cooperation cell of certain antenna port in the public guide frequency of each residential quarter, the frequency pilot sign of this road public guide frequency that each the physical resource element on the cooperation resource only sends, and frequency pilot sign corresponding to each cooperation cell, during by the pilot tone mapping value, different frequency hopping values staggers the CQI calculation pilot frequency of each residential quarter mutually on frequency domain.And for example, each cooperation cell is according to the maximum antenna port number mapping CQI calculation pilot frequency of this residential quarter, and each antenna port only sends a frequency pilot sign; And the CQI calculation pilot frequency of each cooperation cell is different according to separately frequency hopping value respectively, is mapped on different subcarriers.
Can find out from the inventive method, a transmitting portion public guide frequency to obtain CQI information, has been saved pilot-frequency expense in order to channel measurement greatly; Because the CQI calculation pilot frequency is to arrange on the basis of existing public guide frequency pattern, can not destroy existing public guide frequency pattern, less to systematic influence, and can obtain CQI information on full bandwidth.
Further, the CQI calculation pilot frequency of each cooperation cell can carry out many antenna weightings processing.
Description of drawings
Fig. 1 a is the public guide frequency pattern schematic diagram of normal cyclic prefix frame structure in prior art;
Fig. 1 b is the public guide frequency pattern schematic diagram of long loop prefix frame structure in prior art;
Fig. 2 a is the schematic diagram of the first embodiment of the mapping pattern of the CQI calculation pilot frequency of normal cyclic prefix frame structure in the present invention and physical resource element;
Fig. 2 b is the schematic diagram of the first embodiment of the mapping pattern of the CQI calculation pilot frequency of long loop prefix frame structure in the present invention and physical resource element;
Fig. 3 a is the schematic diagram of the second embodiment of the mapping pattern of the CQI calculation pilot frequency of normal cyclic prefix frame structure in the present invention and physical resource element;
Fig. 3 b is the schematic diagram of the second embodiment of the mapping pattern of the CQI calculation pilot frequency of long loop prefix frame structure in the present invention and physical resource element;
Fig. 4 a is the schematic diagram of the 3rd embodiment of the mapping pattern of the CQI calculation pilot frequency of normal cyclic prefix frame structure in the present invention and physical resource element;
Fig. 4 b is the schematic diagram of the 3rd embodiment of the mapping pattern of the CQI calculation pilot frequency of long loop prefix frame structure in the present invention and physical resource element;
Fig. 5 a is the schematic diagram of the 4th embodiment of the mapping pattern of the CQI calculation pilot frequency of normal cyclic prefix frame structure in the present invention and physical resource element;
Fig. 5 b is the schematic diagram of the 4th embodiment of the mapping pattern of the CQI calculation pilot frequency of long loop prefix frame structure in the present invention and physical resource element;
Fig. 6 a is the schematic diagram of the 5th embodiment of the mapping pattern of the CQI calculation pilot frequency of normal cyclic prefix frame structure in the present invention and physical resource element;
Fig. 6 b is the schematic diagram of the 5th embodiment of the mapping pattern of the CQI calculation pilot frequency of long loop prefix frame structure in the present invention and physical resource element.
Fig. 7 a is the schematic diagram of the 6th embodiment of the mapping pattern of the CQI calculation pilot frequency of normal cyclic prefix frame structure in the present invention and physical resource element;
Fig. 7 b is the schematic diagram of the 6th embodiment of the mapping pattern of the CQI calculation pilot frequency of long loop prefix frame structure in the present invention and physical resource element.
Embodiment
Owing to only needing to learn the quality state of channel for the pilot tone of obtaining CQI information, density can be far smaller than demodulation pilot frequency.Therefore, the present invention utilizes the pilot tone of antenna port 0 in public guide frequency according to the public guide frequency pattern of definition in 3GPP TS 36.211, and the mapping relations of CQI calculation pilot frequency and physical resource element are set.Fig. 1 a is the public guide frequency pattern schematic diagram of normal cyclic prefix frame structure in prior art, Fig. 1 b is the public guide frequency pattern schematic diagram of long loop prefix frame structure in prior art, as shown in Fig. 1 a and Fig. 1 b, R0 represent public guide frequency that antenna port 0 sends in pattern with the mapping position of physical resource element, R1 represent public guide frequency that antenna port 1 sends in pattern with the mapping position of physical resource element, R2 represent public guide frequency that antenna port 2 sends in pattern with the mapping position of physical resource element, R3 represent public guide frequency that antenna port 3 sends in pattern with the mapping position of physical resource element.
Existing public guide frequency pattern according to shown in Fig. 1 a and Fig. 1 b in the present invention, at first utilizes the pilot tone of antenna port n in public guide frequency, and the mapping relations of CQI calculation pilot frequency and physical resource element are set, to obtain the CQI calculation pilot frequency; Receiver obtains CQI information according to obtaining the CQI calculation pilot frequency.Wherein, receiver can adopt existing a lot of methods to realize according to the implementation method that acquisition CQI calculation pilot frequency obtains CQI information, and what the present invention emphasized is the acquisition of CQI calculation pilot frequency.CQI calculation pilot frequency of the present invention is take the public guide frequency of each cooperation cell as the basis, and as the CQI calculation pilot frequency, specific implementation has following dual mode with the part of the public guide frequency that sends on antenna port n.Wherein n can get 0 or 1 or 2 or 3.
First kind of way, with corresponding several cooperation cell of certain antenna port in the public guide frequency of each residential quarter, the frequency pilot sign of this road public guide frequency that each the physical resource element on the cooperation resource only sends, and frequency pilot sign corresponding to each cooperation cell staggers on frequency domain mutually.
Pilot tone difference corresponding cooperation cell 1, cooperation cell 2, cooperation cell 3 and cooperation cell 4 with antenna port n.Select wherein two physical resource elements of antenna port n public guide frequency as the CQI calculation pilot frequency of a cooperation cell, and guarantee that the CQI calculation pilot frequency of each cooperation cell evenly staggers, wherein n can get 0 or 1 or 2 or 3.Fig. 2 a is the schematic diagram of the first embodiment of the mapping pattern of the CQI calculation pilot frequency of normal cyclic prefix frame structure in the present invention and physical resource element; Fig. 2 b is the schematic diagram of the first embodiment of the mapping pattern of the CQI calculation pilot frequency of long loop prefix frame structure in the present invention and physical resource element.Particular location in the present embodiment one, is got 0 take n and is described as example as shown in Fig. 2 a and Fig. 2 b.
Wherein, cooperation cell 1 is used the C0 in first and the 6th physical resource element such as the figure that sends public guide frequency on antenna port 0, cooperation cell 2 is used the C1 in second of sending public guide frequency on antenna ports 0 and the 5th physical resource element such as figure, cooperation cell 3 is used the C2 in the 3rd of sending public guide frequency on antenna ports 0 and the 8th physical resource element such as figure, and cooperation cell 4 is used the C3 in the 4th of transmission public guide frequency on antenna ports 0 and the 7th physical resource element such as figure.
When only having three cell cooperatives, do not send the 4th and the 7th physical resource element of cooperation cell 4 corresponding the 0 road public guide frequencies.When only having two cell cooperatives, do not send cooperation cell 3 and cooperation cell 4 corresponding the 0 road public guide frequencies the 3rd, the 4th, the 7th and the 8th physical resource element.
Further, the CQI calculation pilot frequency of each cooperation cell can carry out many antenna weightings processing of each residential quarter.Specific implementation belongs to those skilled in the art's conventional techniques means, repeats no more here.
The second way, with corresponding several cooperation cell of certain antenna port in the public guide frequency of each residential quarter, each physical resource element on the cooperation resource only sends the frequency pilot sign of this road public guide frequency, and during frequency pilot sign corresponding to each cooperation cell, during by the pilot tone mapping value, different frequency hopping values staggers the CQI calculation pilot frequency of each residential quarter mutually on frequency domain.
Pilot tone difference corresponding cooperation cell 1, cooperation cell 2, cooperation cell 3 and cooperation cell 4 with antenna port n.Select wherein four physical resource elements of public guide frequency of antenna port n as the CQI calculation pilot frequency of a cooperation cell, the CQI calculation pilot frequency of each cooperation cell staggers mutually by the different frequency hopping value of each cooperation cell pilot tone, wherein, the frequency hopping value equals cooperation cell identification number delivery 3.
Fig. 3 a is the schematic diagram of the second embodiment of the mapping pattern of the CQI calculation pilot frequency of normal cyclic prefix frame structure in the present invention and physical resource element; Fig. 3 b is the schematic diagram of the second embodiment of the mapping pattern of the CQI calculation pilot frequency of long loop prefix frame structure in the present invention and physical resource element.Particular location is as shown in Fig. 3 a and Fig. 3 b.In the present embodiment two, get 0 take n and describe as example.
Wherein, cooperation cell 1 uses first that send public guide frequency on antenna port 0, second, the 5th and the 6th physical resource element as the CQI calculation pilot frequency, respectively C01, C02, C05 and the C06 in corresponding diagram 3a and Fig. 3 b.The frequency hopping value of supposing cooperation cell 1 is 0, and the frequency hopping value of cooperation cell 2 is 1, and the frequency hopping value of cooperation cell 3 is 2, and the frequency hopping value of cooperation cell 4 is 3.So, cooperation cell 2 uses the next adjacent physical resource element of the physical resource element that cooperation cell 1 use as the CQI calculation pilot frequency, corresponding physical resource element such as C11, C12, C15 and the C16 in Fig. 3 a and Fig. 3 b; Cooperation cell 3 uses the next adjacent physical resource element of the physical resource element that cooperation cell 2 use as the CQI calculation pilot frequency, corresponding physical resource element such as C21, C22, C25 and the C26 in Fig. 3 a and Fig. 3 b; Cooperation cell 4 uses the next adjacent physical resource element of the physical resource element that cooperation cell 3 use as the CQI calculation pilot frequency, corresponding physical resource element such as C31, C32, C35 and the C36 in Fig. 3 a and Fig. 3 b.
In the present embodiment two, supposed that the frequency hopping value of each cooperation cell pilot tone mapping is unequal mutually.If the frequency hopping value of cooperation cell pilot tone mapping equates, can by the frequency hopping value of high layer reset conflict districts, guarantee that the CQI calculation pilot frequency of each cooperation cell staggers mutually at frequency domain.Here, there is the specific implementation of the frequency hopping value of high layer reset conflict districts to belong to technology as well known to those skilled in the art, and unrelated to the invention, be not described in detail here.
Illustrate the mapping relations of the CQI calculation pilot frequency of 4 cooperation cell in the present embodiment two.When only having two cooperation cell, the CQI calculation pilot frequency that shines upon corresponding two residential quarters namely only arranges CQI calculation pilot frequency corresponding to these two cooperation cell; When only having three cooperation cell, the CQI calculation pilot frequency that shines upon corresponding three residential quarters namely arranges corresponding three CQI calculation pilot frequencies that cooperation cell is corresponding, four public guide frequencies shown in each cooperation cell is still shone upon.
Fig. 4 a is the schematic diagram of the 3rd embodiment of the mapping pattern of the CQI calculation pilot frequency of normal cyclic prefix frame structure in the present invention and physical resource element; Fig. 4 b is the schematic diagram of the 3rd embodiment of the mapping pattern of the CQI calculation pilot frequency of long loop prefix frame structure in the present invention and physical resource element.Particular location is as shown in Fig. 4 a and Fig. 4 b.In the present embodiment three, get 0 take n and describe as example.
Wherein, cooperation cell 1 uses first that send public guide frequency on antenna port 0, the 4th, the 5th and the 8th physical resource element as the CQI calculation pilot frequency, respectively C01, C04, C05 and the C08 in corresponding diagram 4a and Fig. 4 b.The frequency hopping value of supposing cooperation cell 1 is 0, and the frequency hopping value of cooperation cell 2 is 1, and the frequency hopping value of cooperation cell 3 is 2, and the frequency hopping value of cooperation cell 4 is 3.So, C11, C14, C15 and the C18 in the physical resource element of cooperation cell 2 correspondences such as Fig. 4 a and Fig. 4 b; C21, C24, C25 and C28 in the physical resource element of cooperation cell 3 correspondences such as Fig. 4 a and Fig. 4 b; C31, C34, C35 and C38 in the physical resource element of cooperation cell 4 correspondences such as Fig. 4 a and Fig. 4 b.
In the present embodiment three, supposed that the frequency hopping value of each cooperation cell pilot tone mapping is unequal mutually.If the frequency hopping value of cooperation cell pilot tone mapping equates, can by the frequency hopping value of high layer reset conflict districts, guarantee that the CQI calculation pilot frequency of each cooperation cell staggers mutually at frequency domain.Here, there is the specific implementation of the frequency hopping value of high layer reset conflict districts to belong to technology as well known to those skilled in the art, and unrelated to the invention, be not described in detail here.
Illustrate the mapping relations of the CQI calculation pilot frequency of 4 cooperation cell in the present embodiment three.When only having two cooperation cell, the CQI calculation pilot frequency that shines upon corresponding two residential quarters namely only arranges CQI calculation pilot frequency corresponding to these two cooperation cell; When only having three cooperation cell, the CQI calculation pilot frequency that shines upon corresponding three residential quarters namely arranges corresponding three CQI calculation pilot frequencies that cooperation cell is corresponding, four public guide frequencies shown in each cooperation cell is still shone upon.
Fig. 5 a is the schematic diagram of the 4th embodiment of the mapping pattern of the CQI calculation pilot frequency of normal cyclic prefix frame structure in the present invention and physical resource element; Fig. 5 b is the schematic diagram of the 4th embodiment of the mapping pattern of the CQI calculation pilot frequency of long loop prefix frame structure in the present invention and physical resource element.Particular location is as shown in Fig. 5 a and Fig. 5 b.In the present embodiment four, get 0 take n and describe as example.
Wherein, cooperation cell uses second, the 3rd, the 6th of sending public guide frequency on antenna port 0 and the 7th physical resource element as the CQI calculation pilot frequency, respectively C02, C03, C06 and the C07 in corresponding diagram 5a and Fig. 5 b.The frequency hopping value of supposing cooperation cell 1 is 0, and the frequency hopping value of cooperation cell 2 is 1, and the frequency hopping value of cooperation cell 3 is 2, and the frequency hopping value of cooperation cell 4 is 3.So, C12, C13, C16 and the C17 in the physical resource element of cooperation cell 2 correspondences such as Fig. 5 a and Fig. 5 b; C22, C23, C26 and C27 in the physical resource element of cooperation cell 3 correspondences such as Fig. 5 a and Fig. 5 b; C32, C33, C36 and C37 in the physical resource element of cooperation cell 4 correspondences such as Fig. 5 a and Fig. 5 b.
In the present embodiment four, supposed that the frequency hopping value of each cooperation cell pilot tone mapping is unequal mutually.If the frequency hopping value of cooperation cell pilot tone mapping equates, can by the frequency hopping value of high layer reset conflict districts, guarantee that the CQI calculation pilot frequency of each cooperation cell staggers mutually at frequency domain.Here, there is the specific implementation of the frequency hopping value of high layer reset conflict districts to belong to technology as well known to those skilled in the art, and unrelated to the invention, be not described in detail here.
Illustrate the mapping relations of the CQI calculation pilot frequency of 4 cooperation cell in the present embodiment four.When only having two cooperation cell, the CQI calculation pilot frequency that shines upon corresponding two residential quarters namely only arranges CQI calculation pilot frequency corresponding to these two cooperation cell; When only having three cooperation cell, the CQI calculation pilot frequency that shines upon corresponding three residential quarters namely arranges corresponding three CQI calculation pilot frequencies that cooperation cell is corresponding, four public guide frequencies shown in each cooperation cell is still shone upon.
Fig. 6 a is the schematic diagram of the 5th embodiment of the mapping pattern of the CQI calculation pilot frequency of normal cyclic prefix frame structure in the present invention and material resources piece; Fig. 6 b is the schematic diagram of the 5th embodiment of the mapping pattern of the CQI calculation pilot frequency of long loop prefix frame structure in the present invention and physical resource element.Particular location is as shown in Fig. 6 a and Fig. 6 b.In the present embodiment five, get 0 take n and describe as example.
Wherein, cooperation cell uses first that send public guide frequency on antenna port 0, second, the 7th and the 8th physical resource element as the CQI calculation pilot frequency, respectively C01, C02, C07 and the C08 in corresponding diagram 6a and Fig. 6 b.The frequency hopping value of supposing cooperation cell 1 is 0, and the frequency hopping value of cooperation cell 2 is 1, and the frequency hopping value of cooperation cell 3 is 2, and the frequency hopping value of cooperation cell 4 is 3.So, C11, C12, C17 and the C18 in the physical resource element of cooperation cell 2 correspondences such as Fig. 6 a and Fig. 6 b; C21, C22, C27 and C28 in the physical resource element of cooperation cell 3 correspondences such as Fig. 6 a and Fig. 6 b; C31, C32, C37 and C38 in the physical resource element of cooperation cell 4 correspondences such as Fig. 6 a and Fig. 6 b.
In the present embodiment five, supposed that the frequency hopping value of each cooperation cell pilot tone mapping is unequal mutually.If the frequency hopping value of cooperation cell pilot tone mapping equates, can by the frequency hopping value of high layer reset conflict districts, guarantee that the CQI calculation pilot frequency of each cooperation cell staggers mutually at frequency domain.Here, there is the specific implementation of the frequency hopping value of high layer reset conflict districts to belong to technology as well known to those skilled in the art, and unrelated to the invention, be not described in detail here.
Illustrate the mapping relations of the CQI calculation pilot frequency of 4 cooperation cell in the present embodiment five.When only having two cooperation cell, the CQI calculation pilot frequency that shines upon corresponding two residential quarters namely only arranges CQI calculation pilot frequency corresponding to these two cooperation cell, four public guide frequencies shown in each cooperation cell is still shone upon; When only having three cooperation cell, the CQI calculation pilot frequency that shines upon corresponding three residential quarters namely arranges corresponding three CQI calculation pilot frequencies that cooperation cell is corresponding, four public guide frequencies shown in each cooperation cell is still shone upon.
Fig. 7 a is the schematic diagram of the 6th embodiment of the mapping pattern of the CQI calculation pilot frequency of normal cyclic prefix frame structure in the present invention and physical resource element; Fig. 7 b is the schematic diagram of the 6th embodiment of the mapping pattern of the CQI calculation pilot frequency of long loop prefix frame structure in the present invention and physical resource element.Particular location is as shown in Fig. 7 a and Fig. 7 b.In the present embodiment six, get 0,1 with n, 2,3 describe for example.
Wherein, first of public guide frequency on cooperation cell 1 use antenna port 0, the 4th of public guide frequency on antenna port 1, first of public guide frequency on antenna port 2, and the 4th of the public guide frequency on antenna port 3 be as the CQI calculation pilot frequency, respectively the C in corresponding diagram 7a and Fig. 7 b
0 01, C
0 14, C
0 21And C
0 34The frequency hopping value of supposing cooperation cell 1 is 0, and the frequency hopping value of cooperation cell 2 is 1, and the frequency hopping value of cooperation cell 3 is 2, and the frequency hopping value of cooperation cell 4 is 3.So, the C in the physical resource element of cooperation cell 2 correspondences such as Fig. 7 a and Fig. 7 b
1 01, C
1 14, C
1 21And C
1 34C in the physical resource element of cooperation cell 3 correspondences such as Fig. 7 a and Fig. 7 b
2 01, C
2 14, C
2 21And C
2 34C in the physical resource element of cooperation cell 4 correspondences such as Fig. 7 a and Fig. 7 b
3 01, C
3 14, C
3 21And C
3 34
Illustrate the mapping relations of the CQI calculation pilot frequency of 4 cooperation cell in the present embodiment six.When only having four groups of (the pilot tone mapping pattern of every group of cooperation cell is identical with processing mode) cooperation cell, each cooperation cell is according to the maximum antenna port number mapping CQI calculation pilot frequency of this residential quarter, but each antenna port only sends A frequency pilot sign, A=1 or 2 or 3 or 4.And different according to each cooperation cell frequency hopping value, the CQI calculation pilot frequency of each cooperation cell is mapped on different subcarriers.
According to identical mapping pattern, when only having two cooperation cell, the CQI calculation pilot frequency that shines upon corresponding two residential quarters namely only arranges CQI calculation pilot frequency corresponding to these two cooperation cell; When only having three cooperation cell, the CQI calculation pilot frequency that shines upon corresponding three residential quarters namely arranges corresponding three CQI calculation pilot frequencies that cooperation cell is corresponding.
The above is only preferred embodiment of the present invention, is not for limiting protection scope of the present invention.
Claims (19)
1. a method of obtaining channel quality indicator CQI information, is characterized in that, the method comprises:
Utilize the pilot tone of antenna port n in public guide frequency, the mapping relations of CQI calculation pilot frequency and physical resource element are set, obtain the CQI calculation pilot frequency; Receiver obtains CQI information according to the CQI calculation pilot frequency;
Wherein, n gets 0 or 1 or 2 or 3;
The mapping relations of the described CQI of setting calculation pilot frequency and physical resource element are: respectively take the public guide frequency of each cooperation cell as the basis, with the part of the public guide frequency that sends on antenna port n as the CQI calculation pilot frequency;
The part of described public guide frequency is: with corresponding several cooperation cell of certain antenna port in the public guide frequency of each residential quarter, each the physical resource element on the cooperation resource only sends the frequency pilot sign of this road public guide frequency.
2. method according to claim 1, it is characterized in that, the part of described public guide frequency is: with corresponding several cooperation cell of certain antenna port in the described public guide frequency of each residential quarter, each physical resource element on the cooperation resource only sends the frequency pilot sign of this road public guide frequency, the frequency pilot sign that each cooperation cell is corresponding different staggers on frequency domain mutually.
3. method according to claim 2, is characterized in that, described cooperation cell comprises cooperation cell 1, cooperation cell 2, cooperation cell 3 and cooperation cell 4, specifically comprises:
With the corresponding cooperation cell 1 of pilot tone difference of described antenna port n, cooperation cell 2, cooperation cell 3 and cooperation cell 4; Select wherein two CQI calculation pilot frequencies as a cooperation cell of the public guide frequency of antenna port n, and guarantee that the CQI calculation pilot frequency of each cooperation cell evenly staggers.
4. method according to claim 3, is characterized in that, described cooperation cell 1 uses first and the 6th physical resource element of sending public guide frequency on antenna port n as the CQI calculation pilot frequency;
Described cooperation cell 2 uses second of sending public guide frequency on antenna port n and the 5th physical resource element as the CQI calculation pilot frequency;
Described cooperation cell 3 uses the 3rd of sending public guide frequency on antenna port n and the 8th physical resource element as the CQI calculation pilot frequency;
Described cooperation cell 4 uses the 4th of sending public guide frequency on antenna port n and the 7th physical resource element as the CQI calculation pilot frequency.
5. method according to claim 2, is characterized in that, described cooperation cell comprises cooperation cell 1, cooperation cell 2 and cooperation cell 3, specifically comprises:
Described cooperation cell 1 uses first and the 6th physical resource element of sending public guide frequency on antenna port n as the CQI calculation pilot frequency; Described cooperation cell 2 uses second of sending public guide frequency on antenna port n and the 5th physical resource element as the CQI calculation pilot frequency; Described cooperation cell 3 uses the 3rd of sending public guide frequency on antenna port n and the 8th physical resource element as the CQI calculation pilot frequency.
6. method according to claim 2, is characterized in that, described cooperation cell comprises cooperation cell 1 and cooperation cell 2, specifically comprises:
Described cooperation cell 1 uses first and the 6th physical resource element of sending public guide frequency on antenna port n as the CQI calculation pilot frequency; Described cooperation cell 2 uses second of sending public guide frequency on antenna port n and the 5th physical resource element as the CQI calculation pilot frequency.
7. method according to claim 1, is characterized in that, described cooperation cell comprises cooperation cell 1, cooperation cell 2, cooperation cell 3 and cooperation cell 4, specifically comprises:
With the corresponding cooperation cell 1 of pilot tone difference of antenna port n, cooperation cell 2, cooperation cell 3 and cooperation cell 4; Select wherein four CQI calculation pilot frequencies as a cooperation cell of the public guide frequency of antenna port n.
8. method according to claim 7, is characterized in that, described cooperation cell 1 uses first that send public guide frequency on antenna port n, second, the 5th and the 6th physical resource element as the CQI calculation pilot frequency.
9. method according to claim 7, is characterized in that, described cooperation cell 1 uses first that send public guide frequency on antenna port n, the 4th, the 5th and the 8th physical resource element as the CQI calculation pilot frequency.
10. method according to claim 7, is characterized in that, described cooperation cell 1 uses second, the 3rd, the 6th of sending public guide frequency on antenna port n and the 7th physical resource element as the CQI calculation pilot frequency.
11. method according to claim 7 is characterized in that, described cooperation cell 1 uses first that send public guide frequency on antenna port n, second, the 7th and the 8th physical resource element as the CQI calculation pilot frequency.
12. according to claim 8,9,10 or 11 described methods, it is characterized in that, the displacement that the mapping position of described CQI calculation pilot frequency is carried out frequency domain by the different frequency hopping value in each residential quarter obtains.
13. method according to claim 7 is characterized in that, when the frequency hopping value equates, by the frequency hopping value of high layer reset conflict districts, guarantees that the CQI calculation pilot frequency of each cooperation cell staggers mutually at frequency domain.
14. method according to claim 7, it is characterized in that, when only having two cooperation cell, CQI calculation pilot frequency corresponding to these two cooperation cell is set, when only having three cell cooperatives, CQI calculation pilot frequency corresponding to these three cooperation cell is set, four public guide frequencies shown in each cooperation cell is still shone upon.
15. method according to claim 1, it is characterized in that, the part of described public guide frequency is: each cooperation cell is according to the maximum antenna port number mapping CQI calculation pilot frequency of this residential quarter, and each antenna port only sends A frequency pilot sign, A=1 or 2 or 3 or 4.
16. method according to claim 15 is characterized in that, according to identical mapping pattern, when only having two cooperation cell, CQI calculation pilot frequency corresponding to these two cooperation cell is set, when only having three cell cooperatives, CQI calculation pilot frequency corresponding to these three cooperation cell is set.
17. method according to claim 15, it is characterized in that, described cooperation cell 1 is used the 4th of public guide frequency on first that send public guide frequency on antenna port 0, antenna port 1, first of public guide frequency on antenna port 2, and the 4th of the public guide frequency on antenna port 3 is as the CQI calculation pilot frequency.
18. method according to claim 17 is characterized in that, basis frequency hopping value separately is different respectively for the CQI calculation pilot frequency of described each cooperation cell, is mapped on different subcarriers.
19. method according to claim 1 is characterized in that, the method also comprises: CQI calculation pilot frequency corresponding to each cooperation cell carries out respectively many antenna weightings to be processed.
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| CN102377466B (en) | 2010-08-13 | 2014-04-30 | 华为技术有限公司 | Multi-antenna diversity scheduling method and multi-antenna diversity scheduling device |
| CN103179664B (en) * | 2011-12-20 | 2016-09-07 | 中兴通讯股份有限公司 | Port mapping, pre-coding matrix and modulation coding mode system of selection and device |
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