CN101686071A - Method for transmitting and receiving channel quality information and device thereof - Google Patents
Method for transmitting and receiving channel quality information and device thereof Download PDFInfo
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- CN101686071A CN101686071A CN200810181695A CN200810181695A CN101686071A CN 101686071 A CN101686071 A CN 101686071A CN 200810181695 A CN200810181695 A CN 200810181695A CN 200810181695 A CN200810181695 A CN 200810181695A CN 101686071 A CN101686071 A CN 101686071A
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- H04—ELECTRIC COMMUNICATION TECHNIQUE
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- H04W48/00—Access restriction; Network selection; Access point selection
- H04W48/08—Access restriction or access information delivery, e.g. discovery data delivery
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W48/00—Access restriction; Network selection; Access point selection
- H04W48/16—Discovering, processing access restriction or access information
Abstract
The embodiment of the invention relates to wireless communication field, and discloses a method for transmitting and receiving channel quality information and a device thereof, wherein the method fortransmitting channel quality information comprises the steps of receiving antenna configuration information sent by a base station; obtaining channel quality information according to the antenna configuration information; and sending the channel quality information to the base station. The embodiment of the invention obtains the channel quality information according to the received antenna configuration information transmitted by the base station and sends the channel quality information to the base station; therefore, the channel quality information is obtained from base station configurationinformation, thereby being more accurate.
Description
Technical field
The present invention relates to wireless communication field, particularly channel quality information (Channel QualityInformation, sending, receiving method CQI) and device thereof.
Background technology
At present, (Multiple Input Multiple Output is MIMO) in the system in descending multiple-input, multiple-output, in order to improve received signal to noise ratio, improve user's throughput, plan to have adopted the mode of precoding in the Long Term Evolution LTE standard of 3GPP discussion third generation partner.Simultaneously, wave beam forming (beamforming) is applied in the TD-SCDMA system.In the LTE standard, wave beam forming has also write standard.In LTE R8, the base station has 4 antennas at most, at the descending public guide frequency that 4 antennas are provided simultaneously.When 8 antennas are done wave beam forming/precoding (precoding), can only obtain the channel of 4 antennas.So only with do 4 antennas channel, actual channel H can't obtain.At this moment can only calculate the pre-coding matrix of 4 antennas, and the CQI that obtains according to this pre-coding matrix.In this case, the CQI feedback based on public guide frequency is actually very inaccurate.
Prior art proposes a kind of CQI based on existing public guide frequency and estimates that user equipment (UE) estimates the channel matrix according to existing 4 antenna pilots, calculates precoding vector and then obtains CQI according to this then, then to base station feedback CQI.After the base station obtained CQI, the CQI that comes according to the UE feedback made MCS notice UE.Yet the CQI of this kind method UE feedback is inaccurate.The base station may need further to adjust this CQI.
Prior art proposes a kind of pilot tone based on an antenna port again and does the CQI estimation.The base station can be gone to send according to omni-beam, and the symbol that all antenna transmission are same, UE estimate the gain of omni-beam, calculate CQI, feed back to the base station.The base station calculates the gain of wave beam forming to omni-beam, UE is passed the CQI come revise, and the MCS that obtains distributing to UE according to revised CQI passes to UE then.Yet omni-beam also needs to use the pilot tone moulding, carries out preliminary treatment such as the antenna port 0 that can use LTE.But if descending CQI also estimates based on antenna port 0, DL CQI does not just have accurately to reflect the down channel quality behind the data channel beam forming so.
Summary of the invention
The purpose of the embodiment of the invention provides a kind of sending method and device thereof of and channel quality information, in order to send channel quality information accurately.
Another purpose of the embodiment of the invention provides a kind of method of reseptance and device thereof of and channel quality information, in order to receive channel quality information accurately.
On the one hand, the embodiment of the invention provides following technical scheme: a kind of sending method of channel quality information comprises: receive the antenna configuration information that the base station sends; Obtain channel quality information according to described antenna configuration information; Channel quality information is sent to the base station.
On the other hand, the embodiment of the invention provides a kind of method of reseptance of channel quality information, comprising: the transmitting antenna configuration information is given subscriber equipment; Receive the channel quality information that subscriber equipment sends, wherein said channel quality information is to obtain by antenna configuration information.
On the other hand, the embodiment of the invention provides a kind of dispensing device of channel quality information, comprising: receiving element is used to receive the antenna configuration information that the base station sends; Acquiring unit is used for obtaining channel quality information according to described antenna configuration information; Transmitting element is used for channel quality information is sent to the base station.
On the other hand, the embodiment of the invention provides a kind of receiving system of channel quality information, comprising: transmitting element is used for to subscriber equipment transmitting antenna configuration information; Receiving system is used to receive the channel quality information that subscriber equipment sends, and wherein, channel quality information is to obtain according to described antenna configuration information.
On the other hand, the embodiment of the invention provides a kind of sending method of Reference Signal Received Power RSRP value, comprising: receive the antenna configuration information that the base station sends; Obtain Reference Signal Received Power RSRP value according to described antenna configuration information; The RSRP value is sent to the base station.
On the other hand, the embodiment of the invention provides a kind of sending method of Reference Signal Received Power RSRP value, comprising: receive the indication that the base station sends; Obtain Reference Signal Received Power RSRP value according to described indication; The RSRP value is sent to the base station.
On the other hand, the embodiment of the invention provides a kind of dispensing device of Reference Signal Received Power RSRP value, comprising: receiving element, in order to receive the antenna configuration information that the base station sends; Obtain the unit, in order to obtain Reference Signal Received Power RSRP value according to described antenna configuration information; Transmitting element is in order to send to the base station with the RSRP value.
The embodiment of the invention obtains channel quality information by receiving the antenna configuration information that the base station sends according to this antenna configuration information; Channel quality information is sent to the base station, and so channel quality information is to obtain by base station configuration information, and so the channel quality information that obtains is more accurate.In addition, also can be by receiving the antenna configuration information that the base station sends; Obtain Reference Signal Received Power RSRP value according to described antenna configuration information; The RSRP value is sent to the base station, and so the RSRP value is to obtain by base station configuration information, and so the channel quality information that obtains is more accurate.
Description of drawings
Fig. 1 is the schematic flow sheet of the transfer approach of embodiment of the invention channel quality information;
Fig. 2 is that antenna of the present invention is the example structure schematic diagram that even linear array is provided with;
Fig. 3 is the example structure schematic diagram that 8 antennas of the present invention are provided with even linear array;
Fig. 4 is that antenna of the present invention is the example structure schematic diagram that uniform circular array is provided with;
Fig. 5 is that antenna of the present invention is the example structure schematic diagram of polarization setting;
Fig. 6 is the example structure schematic diagram that a plurality of APAP of the present invention follow a telex network simultaneously;
Fig. 7 is the example structure schematic diagram of the dispensing device of channel quality information of the present invention.
Fig. 8 is the schematic flow sheet of the sending method of embodiment of the invention Reference Signal Received Power RSRP value;
Fig. 9 position is the schematic flow sheet of the sending method of embodiment of the invention Reference Signal Received Power RSRP value.
Embodiment
For making the purpose, technical solutions and advantages of the present invention clearer, embodiments of the present invention are described in further detail below in conjunction with accompanying drawing.
First embodiment of the invention provides a kind of transfer approach of channel quality information, as shown in Figure 1, specifically comprises the steps:
Step 101, the base station is to UE transmitting antenna configuration information;
Wherein, antenna configuration information is the information that the base station disposes according to different aerial position settings, illustrate, if aerial position is set to even linear array, the antenna configuration information that this reception base station sends specifically comprises: number of antennas, strong correlation antenna, antenna are even linear array, pilot tone antenna and non-pilot tone antenna and are not poliarizing antennas; If aerial position is set to uniform circular array, the antenna configuration information that this reception base station sends specifically comprises: number of antennas, strong correlation antenna, antenna are uniform circular array, pilot tone antenna and non-pilot tone antenna and are not poliarizing antennas; If aerial position is set to poliarizing antenna, the antenna configuration information that this reception base station sends specifically comprises: the antenna sets of being made up of a horizontal antenna and vertical antenna in number of antennas, strong correlation antenna, poliarizing antenna, the poliarizing antenna is even linear array, pilot tone antenna and non-pilot tone antenna; If this antenna is a stand-alone antenna, the antenna configuration information that this reception base station sends specifically comprises: number of antennas, stand-alone antenna; If described antenna is access point AP, the antenna configuration information that described reception base station sends specifically comprises: whether AP number, number of antennas, strong correlation antenna, antenna are even linear array or uniform circular array, pilot tone antenna and non-pilot tone antenna and are poliarizing antennas.
Step 102 behind the UE reception antenna configuration information, obtains channel quality information according to this antenna configuration information;
Wherein obtaining channel quality information according to this antenna configuration information specifically comprises:
(Reference Signal Receiving Power RSRP) waits the metrical information relevant with mobile management, and wherein RSRP will be discussed in more detail below for the channel fading value of the pilot tone antenna that obtains according to this antenna configuration information and Reference Signal Received Power.Wherein the pilot tone antenna is the antenna of transmission pilot tone; (RSRQ RSSI) waits the metrical information relevant with mobile management, and wherein this non-pilot tone antenna is the antenna that does not transmit pilot tone to obtain the channel fading value of non-pilot tone antenna and RSRP according to the channel fading value of this pilot tone antenna; According to the channel fading value of the channel fading value of this pilot tone antenna and non-pilot tone antenna obtain channel quality information and and RSRP (RSRQ, the metrical information relevant such as RSSI) with mobile management, wherein the channel fading value of the channel fading value of this pilot tone antenna and non-pilot tone antenna acquisition channel quality information specifically comprises: obtain channel matrix and RSRP (RSRQ, RSSI) metrical information relevant with mobile management such as grade according to the channel fading value of this pilot tone antenna and the channel fading value of non-pilot tone antenna; Obtain receiving terminal signal to noise ratio and RSRP (RSRQ, RSSI) metrical information relevant such as grade according to this channel matrix with mobile management; Obtain channel quality information according to this receiving terminal signal to noise ratio.
Wherein, according to aerial position settings different in the step 101, then specifically obtain the computational methods difference of the channel fading value of non-pilot tone antenna according to the channel fading value of pilot tone antenna.Wherein, the channel fading value of pilot tone antenna is calculated the channel fading value of this non-pilot tone antenna by linear interpolation or interpolation by proportional parts if this antenna is an even linear array; If this antenna is a uniform circular array, the channel fading value of this pilot tone antenna is calculated the channel fading value of this non-pilot tone antenna by linear interpolation; If this antenna is a poliarizing antenna, the channel fading value of this pilot tone antenna is calculated the channel fading value of this non-pilot tone antenna by linear interpolation, and (RSRQ RSSI) waits the metrical information relevant with mobile management can to obtain the RSRP of non-pilot tone antenna according to the channel fading value of calculating.
If this antenna is stand-alone antenna, the channel fading value that obtains the pilot tone antenna according to this antenna configuration information specifically comprises: the signal to noise ratio that obtains according to the channel fading value of this pilot tone antenna; Add that according to signal to noise ratio yield value obtains the signal to noise ratio of revising; Obtain channel quality information according to the signal to noise ratio of revising.
Step 103, UE sends to the base station with the channel quality information that obtains.
First channel quality information that implement to obtain is the channel fading value of the non-pilot tone antenna that obtains of the configuration information according to the base station according to the present invention, and the quality information that calculates according to pilot channel decline value and non-pilot channel decline value can be more accurate then
The channel quality information that first enforcement obtains according to the present invention is the RSRP (RSRQ according to the non-pilot tone antenna of the configuration information acquisition of base station, the metrical information relevant such as RSSI) with mobile management, then according to pilot channel RSRP (RSRQ, RSSI) measured value and/or with non-pilot channel RSRP (RSRQ, RSSI) the equivalent RSRP (RSRQ that calculates of measured value, RSSI) measured value can be more accurate, and (RSRQ, RSSI) measured value reports the base station with equivalent RSRP then.
Schematic flow sheet of the transfer approach of a kind of channel quality information of first embodiment of the invention shown in Figure 1 is described in detail below in conjunction with other accompanying drawings and specific embodiment.
Antenna of the present invention is the example structure schematic diagram that even linear array is provided with, as shown in Figure 2, wherein be the structure of even linear array at antenna, present embodiment comprises according to the antenna configuration information that step 101 receives earlier: adopt even line style interpolation to obtain the channel quality information of step 102.
Suppose flat fading channel (meeting the characteristic of channel on the OFDM subcarrier) according to formula (1),
h
j＝(h
i×d
2+h
k×d
1)/(d
1+d
2) (1)
Wherein, wherein i, j, k are in M the antenna any three, wherein have two to be to send the pilot tone antenna among i, j, the k, and one is non-transmission pilot tone antenna.Hi, hj, hk are the weak value of channel, and d1 is the distance between hi, the hj antenna, and d2 is the distance between hj, the hk antenna.Two antennas are wherein arranged for transmitting the antenna of pilot tone, an antenna has following several combination for the antenna that does not transmit pilot tone, hi, and hj is for transmitting the antenna of pilot tone, and hk is not for transmitting the antenna of pilot tone; Hi, hk is for transmitting the antenna of pilot tone, and hj is for transmitting the antenna of non-pilot tone; Hj, hk is for transmitting the antenna of pilot tone, and hi is not for transmitting the antenna of pilot tone.Above-mentioned three kinds may be able to be calculated by the channel value of formula (1) with the unknown.The antenna that wherein transmits pilot tone is that the weak value of the channel of pilot tone antenna is calculated by formula (2):
h＝y×a
-1＝y/a (2)
Wherein, a is a frequency pilot sign, and y is a received signal, supposes that wherein channel is a flat fading channel, and at receiving terminal, known a, y calculate decline value h according to formula (2).
Wherein, after calculating hi, hj, hk and be the weak value of channel according to formula (1) (2), be the channel fading value that obtains non-pilot tone antenna in M the antenna according to channel fading value, obtain the channel matrix H of an antenna of UE reception then according to the channel fading value of pilot tone antenna and the channel fading value of non-pilot tone antenna with the nearest pilot tone antenna of non-pilot tone antenna
1, as shown in Equation (3):
H
1＝[h
11，...，h
1M] (3)
And the like, if M transmitting antenna arranged, wherein D sends pilot tone, and UE has N root reception antenna, and the i root reception antenna of UE can estimate the channel of M transmitting antenna so, is designated as Hi, is the row vector of a 1 * M.The N root reception antenna of UE and M root transmitting antenna are formed a channel matrix H, and N * M is to matrix.
In (3-1), H
i=[h
I1..., h
IM];
Then, obtain the signal to noise ratio snr of the 1st layer of receiving terminal according to this channel matrix H
l, concrete calculating as formula (4):
In (4), T=GHV, G are the weighting matrix Q * N of receiving terminal, and H is N * M channel matrix, and V is the precoding matrix of transmitting terminal, the vector of M * Q, the number of plies of Q for sending.Be expressed as σ
2Be noise power, P is a signal power.In (4), the average of E (x) expression x, P=E (| s
2|) be signal power, H is N * M channel matrix, V is the precoding matrix of transmitting terminal, the vector of M * Q.
In (4), T=GHV, G are the weighting matrix Q * N of receiving terminal, and H is N * M channel matrix, and V is the precoding matrix of transmitting terminal, the vector of M * Q, the number of plies of Q for sending.Be expressed as σ
2Be noise power, P is a signal power.
In (4), the average of E (x) expression x, P=E (| s
2|) be signal power, H is N * M channel matrix, V is the precoding matrix of transmitting terminal, the vector of M * Q.
Formula (4) is to come according to following calculated with mathematical model,
z＝Gy＝GHVs+Gn＝Ts+Gn (4-1)
In (4-1), s is the symbolic vector of the transmission of Q * 1, and n is N * 1 zero-mean, and variance is σ
2White Gaussian noise vector noise vector. in (4-1), y=HVs+n is for receiving vector.
Then, obtain channel quality information CQI, specifically can adopt the method for tabling look-up according to this receiving terminal signal to noise ratio snr, perhaps other any existing methods, this repeats no more.
If 8 antennas are adopted in the base station, and even linear array, spacing is 0.5 λ, shown in Figure 3, wherein in step 101, it is the number of antennas of 1. base stations, 2. strong correlation antenna, the 3. shape of antenna that the base station need send to terminal information, be even linear array, 4. those several antenna transmission pilot tones in base station, 5. antenna is not a poliarizing antenna.
Wherein antenna 1,3, and 5,8 send the pilot tone antenna of pilot tone, and then antenna 1,3,5,8 channel fading value h1, h3, h5, h8 can calculate according to formula (2), and antenna 2,4,6,7 is not for sending the non-pilot tone antenna of pilot tone, its channel fading value h2, h4, h6, h7 obtains by interpolation, and wherein the h2 of concrete antenna 2 need be from the h1 of antenna 1,3, and h3 calculates; The h4 of antenna 4 need be from the h3 of antenna 3,5, and h5 calculates; The h6 of antenna 6 and antenna 7, h7 need calculate among the h8 from the h5 of antenna 5 and antenna 8, according to approach based on linear interpolation, obtain h2 according to formula (5), h4, h6, h7.
h
2＝(h
1+h
3)/2，h
4＝(h
3+h
5)/2，h
6＝2h
5/3+h
8/3，h
7＝h
5/3+2h
8/3 (5)
And then according to formula (3) or (3-1) obtain channel matrix H:
And then obtain SNR according to (4), obtain CQI according to SNR then.
In addition, antenna as shown in Figure 2 is the structural representation of even linear array, and present embodiment also can adopt the interpolation of ratio to obtain the channel quality information of step 102.
Concrete as formula (6)
Wherein, hi, hj, hk are the weak value of channel, and d1 is the distance between hi, the hj antenna, and d2 is the distance between hj, the hk antenna.Wherein if two antennas are arranged for transmitting the antenna of pilot tone, an antenna is not for transmitting the antenna of pilot tone.Have following several combination, hi, hj is for transmitting the antenna of pilot tone, and hk is not for transmitting the antenna of pilot tone; Hi, hk is for transmitting the antenna of pilot tone, and hj is for transmitting the antenna of non-pilot tone; Hj, hk is for transmitting the antenna of pilot tone, and hi is not for transmitting the antenna of pilot tone.
Calculate hi, hj, hk according to interpolation by proportional parts, according to formula (3) or (3-1), (4) obtain CQI, this is same as described above, this repeats no more.
In addition, 8 antennas of usefulness as shown in Figure 3 are provided with even linear array, also can adopt interpolation by proportional parts to calculate h2, h4, and h6, h7, wherein interpolation by proportional parts thinks that the ratio of channel fading value of adjacent antenna is the same, and is concrete as formula (7)
h
2/h
1＝h
3/h
2＝h
4/h
3＝h
5/h
4＝h
6/h
5＝h
7/h
6＝h
8/h
7 (7)
Obtain h2 according to formula (8) then, h4, h6, h7:
h
2＝(h
1h
3)
1/2，h
4＝(h
3h
5)
1/2，h
6＝(h
5 2h
8)
1/3，h
7＝(h
8 2h
5)
1/3 (8)
Calculate h2 according to interpolation by proportional parts, h4, h6, h7, according to formula (3) or (3-1), (4) obtain CQI, this is same as described above, this repeats no more.
Antenna of the present invention is the example structure schematic diagram that uniform circular array is provided with, and as shown in Figure 4, wherein is the structure of uniform circular array at antenna, and present embodiment comprises according to the antenna configuration information that step 101 receives earlier: 1, the number of antennas of base station; 2. strong correlation antenna; 3. the shape of antenna is the circle battle array; 4. those several antenna transmission pilot tones in base station; 5. antenna is not a poliarizing antenna.Adopt the line style interpolation to obtain the channel quality information of step 102 then.
As shown in Figure 4, obtain pilot tone according to configuration information and on that antenna, send out, can obtain not sending the antenna of the nearest transmission pilot tone of the antenna of pilot tone equally with certain.Wherein suppose antenna 1,3,5,7 send pilot tone, and UE can obtain antenna 1 according to formula (2), h1 on 3,5,7, h3, h5, h7, then according to the relative position of antenna in the configuration information 2,4,6,8 and antenna 1,3,5,7, promptly UE knows that adjacent with antenna 2 is antenna 1,3; Adjacent with antenna 4 is antenna 3,5; Adjacent with antenna 6 is antenna 5,7; Adjacent with antenna 8 is antenna 7,1, obtains h2, h4, and h6, h8 specifically uses linear interpolation, as shown in Equation (9):
h
2＝(h
1+h
3)/2，h
4＝(h
3+h
5)/2，h
6＝(h
5+h
7)/2，h
8＝(h
1+h
7)/2 (9)
So UE obtains the channel fading value of all antennas, then according to formula (3) or (3-1), (4) obtain SNR and CQI.
Antenna of the present invention is the example structure schematic diagram of polarization setting, and as shown in Figure 5, wherein at the structure of antenna for polarization, the base station is divided into 4 groups with 8 antennas, and every group comprises two antennas, and one is horizontal polarization, and one is perpendicular polarization.Every group spacing is 0.5 λ.Present embodiment comprises according to the antenna configuration information that step 101 receives earlier: 1. the number of antennas of base station is 8; 2. antenna is a poliarizing antenna, antenna the 1,2,3, the 4th, horizontal polarization, the 5,6,7, the 8th, perpendicular polarization; 3. strong correlation antenna; 4. the shape of antenna sets is an even linear array; 5. antenna 1,4, and 5,8 send pilot tone, and antenna 2,3,6,7 does not send pilot tone.Adopt the line style interpolation to obtain the channel quality information of step 102 then.Specifically comprise:
As shown in Figure 5, UE obtains antenna 1,2,3,4th in 8 antennas, a kind of polarization mode, antenna 5,6,7,8th, a kind of polarization mode by configuration information.Wherein antenna 1,5 is one group, and antenna 2,6 is one group, and antenna 3,7 is one group, and antenna 4,8 is one group.Two antennas in one group wherein, because the polarization mode difference, the channel of these two antennas is independently.The antenna that UE obtains the transmission pilot tone of base station notice is 1,4,5,8.Antenna 2,3,6,7 is non-pilot tone antenna, its channel fading value needs to estimate.Owing to be poliarizing antenna, correlation is just arranged with a kind of channel of antenna of polarization mode.Be antenna 1,2, the channel on 3,4 has correlation, antenna 5,6, and the channel on 7,8 has correlation.Then the channel fading value on the antenna 2,3 obtains by the channel fading value of antenna 1,4, and the channel fading value on the antenna 6,7 obtains by the channel fading value on the antenna 5,8.Wherein, h1, h4, h5, h8 obtains according to formula (2), adopts linear interpolation, according to formula (10),
h
2＝h
4/3+2h
1/3，h
3＝2h
4/3+h
1/3；h
6＝h
8/3+2h
5/3，h
7＝2h
8/3+h
5/3 (10)
Obtain the channel fading value h2 of non-pilot tone antenna, h3, h6, h7.So UE obtains the channel fading value of all antennas, then according to formula (3) or (3-1), (4) obtain SNR and CQI.
In addition, if the antenna configuration information that the base station sends in the step 101 comprises one, two, three even more AP be simultaneously with a telex network, and as shown in Figure 6, a plurality of AP are simultaneously with the scene of a UE communication.At this moment the combination of antenna also has multiple, such as an AP 1,2,4,8 antenna might be arranged, if two AP communicate by letter with a UE, two AP just may be combined into, 2,3,4,5,6,8,9,10,12,16 antennas.If 3 AP can have more combination.In this case, the pilot frequency format of designing antenna comprises that all possible costs are too big.
In step 101, the antenna configuration information that UE is issued in the base station is: 1, AP number; 2, each AP is used as the base station, notifies by the embodiment of embodiment Fig. 3, Fig. 4, Fig. 5, Fig. 6 correspondence.Embodiment according to Fig. 3, Fig. 4, Fig. 5, Fig. 6 correspondence handles the channel fading value that obtains on all AP antennas, the antenna of all AP is formed regarded as a big MIMO then, obtains CQI by traditional method.
In step 101, the antenna configuration information that UE is issued in the base station is: 1,1. antenna group number (being equivalent to AP number).2. the embodiment of each antenna sets by embodiment Fig. 3, Fig. 4, Fig. 5 correspondence notified.Embodiment according to Fig. 3, Fig. 4, Fig. 5 correspondence handles the channel fading value that obtains on all AP antennas, the antenna of all AP is formed regarded as a big MIMO then, and by formula the method for (4) obtains CQI.
In step 101, the antenna configuration information that UE is issued in the base station is: 1. the number of antennas of all AP, quite and the antenna for base station number of embodiment 4; 2. stand-alone antenna, then the embodiment according to following stand-alone antenna obtains CQI.
In addition, if antenna is independently in the antenna configuration information that the base station sends in the step 101, UE is the channel that can't not sent the antenna of public guide frequency.The antenna configuration information envelope that this moment, the base station sent: the 1. number of antennas of base station; 2. stand-alone antenna.Wherein to obtain 8 antennas be example to UE, and these 8 antennas are independently, independently mean antenna on channel be independently or correlation very a little less than, can not obtain channel into the antenna of transmission pilot tone this moment by interpolation.Then step 102 obtains channel quality information.Specifically comprise:
Signal to noise ratio according to the channel fading value of described pilot tone antenna obtains specifically comprises: obtain the channel fading value of pilot tone antenna earlier according to formula (2), calculate signal to noise ratio according to formula (4) then;
Add that according to signal to noise ratio yield value obtains the signal to noise ratio of revising; Be example specifically, the gain calculating of 4 antennas wherein is roughly 10log with 8 antennas
10(8/4)=3dB; Perhaps UE sets a look-up table according to the antenna number of reality, directly finds the yield value of the corresponding 4 antenna SNR of antenna for base station number, will estimate that then SNR adds the SNR of yield value as reality;
Obtain channel quality information according to the signal to noise ratio of revising, this step is same as described above, and this repeats no more.
In addition, another embodiment of the present invention provides a kind of dispensing device of channel quality information, and as shown in Figure 7, this device can be UE 10, and its receiving system with a channel quality information is communicated by letter, and this receiving system can be base station 20, and wherein UE10 specifically comprises:
Receiving element 11 is used to receive the antenna configuration information that base station 20 sends; Wherein base station 20 comprises that transmitting element 21 is used for the 10 transmitting antenna configuration informations to UE;
Wherein, antenna configuration information is the information that base station 20 disposes according to different aerial position settings, illustrate, if aerial position is set to even linear array, this antenna configuration information specifically comprises: number of antennas, strong correlation antenna, antenna are even linear array, pilot tone antenna and non-pilot tone antenna and are not poliarizing antennas; If aerial position is set to uniform circular array, the antenna configuration information that this reception base station sends specifically comprises: number of antennas, strong correlation antenna, antenna are uniform circular array, pilot tone antenna and non-pilot tone antenna and are not poliarizing antennas; If aerial position is set to poliarizing antenna, the antenna configuration information that this reception base station sends specifically comprises: the antenna sets of being made up of a horizontal antenna and vertical antenna in number of antennas, strong correlation antenna, poliarizing antenna, the poliarizing antenna is even linear array, pilot tone antenna and non-pilot tone antenna; If this antenna is a stand-alone antenna, the antenna configuration information that this reception base station sends specifically comprises: number of antennas, stand-alone antenna, if described antenna is access point AP, the antenna configuration information that described reception base station sends specifically comprises: whether AP number, number of antennas, strong correlation antenna, antenna are even linear array or uniform circular array, pilot tone antenna and non-pilot tone antenna and are poliarizing antennas, concrete antenna equipment structural representation reaches the foregoing description and describes shown in Fig. 2,3,4,5,6, this repeats no more.
Acquiring unit 12 is used for obtaining channel quality information according to this antenna configuration information;
Wherein acquiring unit 12, specifically comprise:
First obtains subelement, is used for the channel fading value of the pilot tone antenna that obtains according to this antenna configuration information, and wherein the pilot tone antenna is the antenna of transmission pilot tone;
Second obtains subelement, is used for obtaining according to the channel fading value of this pilot tone antenna the channel fading value of non-pilot tone antenna, and wherein this non-pilot tone antenna is the antenna that does not transmit pilot tone;
The 3rd obtains subelement, be used for obtaining channel quality information according to the channel fading value of this pilot tone antenna and the channel fading value of non-pilot tone antenna, wherein the channel fading value of the channel fading value of this pilot tone antenna and non-pilot tone antenna acquisition channel quality information specifically comprises:
Obtain channel matrix according to the channel fading value of this pilot tone antenna and the channel fading value of non-pilot tone antenna; Obtain the receiving terminal signal to noise ratio according to this channel matrix; Obtain channel quality information according to this receiving terminal signal to noise ratio.
Wherein, difference is set, then specifically obtains the computational methods difference of the channel fading value of non-pilot tone antenna according to the channel fading value of pilot tone antenna according to receiving element 11 reception antenna positions.Wherein, the channel fading value of pilot tone antenna is calculated the channel fading value of this non-pilot tone antenna by linear interpolation or interpolation by proportional parts if this antenna is an even linear array; If this antenna is a uniform circular array, the channel fading value of this pilot tone antenna is calculated the channel fading value of this non-pilot tone antenna by linear interpolation; If this antenna is a poliarizing antenna, the channel fading value of this pilot tone antenna is calculated the channel fading value of this non-pilot tone antenna by linear interpolation.
If this antenna is stand-alone antenna, the channel fading value that obtains the pilot tone antenna according to this antenna configuration information specifically comprises: the signal to noise ratio that obtains according to the channel fading value of this pilot tone antenna; Add that according to signal to noise ratio yield value obtains the signal to noise ratio of revising; Obtain channel quality information according to the signal to noise ratio of revising.
The above-mentioned CQI value that calculates according to different aerial positions can obtain according to corresponding formula (1) to (9) in the top specific embodiment, above-mentionedly describes in detail, and this repeats no more.
Transmitting element 13 is used for channel quality information is sent to base station 20.Base station 20 comprises receiving system 22, is used to receive the channel quality information that transmitting element 13 sends, and wherein, channel quality information is to obtain according to described antenna configuration information.
The channel quality information that the dispensing device of the channel quality information that this embodiment provides obtains is the channel fading value of the non-pilot tone antenna that obtains of the configuration information according to the base station, and the quality information that calculates according to pilot channel decline value and non-pilot channel decline value can be more accurate then.
In addition, channel quality information is except obtaining pilot channel decline value and the calculating of non-pilot channel decline value according to the configuration information that receives the base station transmission, this channel quality information also can comprise Reference Signal Received Power RSRP value, with shown in Figure 8, the sending method of the sharp a kind of Reference Signal Received Power RSRP value of the invention process comprises:
Step 801 receives the antenna configuration information that the base station sends;
Step 802 obtains Reference Signal Received Power RSRP value according to described antenna configuration information;
Step 803 sends to the base station with the RSRP value.
Wherein step 802 specifically comprises: the channel fading value that obtains the pilot tone antenna according to this antenna configuration information; Channel fading value according to this pilot tone antenna obtains the RSPR value.Perhaps, obtain the channel fading value of pilot tone antenna according to this antenna configuration information; Obtain the channel fading value of non-pilot tone antenna according to the channel fading value of this pilot tone antenna; Obtain the RSPR value according to the channel fading value of this pilot tone antenna and the channel fading value of non-pilot tone antenna.
Wherein specifically comprise: be merged into equivalent RSRP value with each pilot tone antenna or with the RSPR value of each pilot tone antenna and non-pilot tone antenna according to obtaining the RSPR value; Or the RSPR value of each antenna port is merged into the RSRP value of equivalence; Or it is on duty with weighted factor that the RSPR value of each antenna port is merged into the RSRP of equivalence; Or it is on duty with behind the weighted factor that the RSPR value of each antenna port is merged into the RSRP of equivalence, adds a deviant again, specifically will describe in detail among the embodiment below.
Wherein this is merged into the concrete merging mode of equivalent RSRP value and comprises:
Can calculate the RSRP (RSRQ of pilot channel and/or non-pilot channel according to the channel matrix H of calculating, measured value such as RSSI), if there are many antennas to receive, can be with the RSRP (RSRQ of each reception antenna, RSSI) etc. measured value carries out certain weighting and merges and revise, obtain RSRP (RSRQ, RSSI) measured value such as grade of pilot channel and/or non-pilot channel.
Suppose that the RSRP value that pilot channel obtains is RSRP
iIt is the sequence number of i pilot channel.The RSRP value that non-pilot channel obtains is RSRP
j, j is the sequence number of non-pilot channel.Then according to RSRP
iAnd RSRP
jCarry out certain weighting and merge and correction, obtain the RSRP value of equivalence.Concrete mode is as follows:
(1) high specific merges
(2) selectivity merges
RSRP＝max(αRSRP
i，βRSRP
j)+γ
(3) the linear merging, suitable weights are selected can be corresponding to the effect of transmit diversity.
(4) merge for how much
When β=0, represent that non-pilot channel does not participate in calculating, β=non-pilot channel of 1 expression participates in calculating.Wherein, α, beta, gamma are weight coefficient, can get different values, and wherein RSRPi is the RSRP value of i pilot tone antenna correspondence, and RSRPj is the RSRP value of j non-pilot tone body antenna correspondence.In addition, this embodiment only describes the mode that the RSRP value obtains, and other measured values such as RSRQ, RSSI are handled by the mode identical with RSRP, and this repeats no more.
Example 1:, suppose that 1,2,3,4 merge as antenna port 0 if 8 physical antennas in base station are the sending method that example is specifically set forth Reference Signal Received Power RSRP value with Fig. 5; 5,6,7,8 merge as antenna port 1.UE can record the RSRP0 and the RSRP1 of antenna port 0 and antenna port 1.Here 1,2,3,4th, with a kind of polarization mode; 5,6,7,8 can be another kind of polarization mode, can certainly be with 1,2,3,4th, and same polarization mode.
With the RSRP0 of antenna port 0 and antenna port 1 and the value of RSRP1.
Obtain the RSRP of equivalence according to (1) to (3) merging method, and report the base station after the certain processing of process.
Example 2:, suppose that physical antenna 1 is as antenna port 0 if 8 physical antennas in base station are example with Fig. 5; Physical antenna 5 is as antenna port 1.Two top ports send CRS; Remaining physical antenna does not send CRS. physical antenna 1 and physical antenna 5 can be identical or different polarization mode, and UE can record the RSRP0 and the RSRP1 of antenna port 0 and antenna port 1.The RSRP0 of antenna port 0 and antenna port 1 and the value of RSRP1 are obtained equivalent RSRP according to certain merging method
Effective0Because remaining physical antenna does not send CRS, can think that it is independently, signaling according to the base station, can determine whether can on the basis of the RSRP that obtains after the merging, add Last Offset, as above-mentioned 8 antennas, estimate the RSRP of two antennas, added 10*log3=4.7dB on this basis again.
Be RSRP
Effective=α RSRP
Effective0+ β, α are weighted factor, can be 1, and β is an invariant, can be 4.7dB.RSRPeffective0 after perhaps directly will merging directly reports or reports.
Example 3:, suppose that physical antenna 1 is as antenna port 0 if 8 physical antennas in base station are example with Fig. 5; Physical antenna 5 is as antenna port 1.Two top ports send CRS; Suppose that physical antenna 4 is as antenna port 2; Physical antenna 8 is as antenna port 3.Two top ports send CRS.Remaining physical antenna does not send CRS. physical antenna 1 and physical antenna 5 can be identical or different polarization mode.According to the signaling of base station, decision uses several and which antenna port to do the measurement of RSRP.UE can record the RSRP0 and the RSRP1 of antenna port 0 and antenna port 1, and UE can record the RSRP2 of antenna port 2 and antenna port 3 and RSRP3 obtains the value of the RSRP of antenna port 0 to 3 equivalence according to certain merging method RSRP
Effective0Itself revise if notice UE in base station carries out correction or the UE oneself of RSRP, can calculate its RSRP then by the method for difference estimate the to haunt channel value of physical antenna of transmission CRS
ModdifyValue, and then this basis is upward revised the above-mentioned equivalent RSRPeffective0 value that obtains.
As RSRP
Effective=α RSRP
Effective0+ (1-α) RSRP
Moddify+ β, α are weighted factor, and β is an invariant.Perhaps with RSRP0, RSRP1, RSRP2 and RSRP3 and RSRP
ModdifyTreat on an equal basis, the merging method that utilization is introduced above merges.Because remaining physical antenna does not send CRS, can think that it is independently, can on the basis of the RSRPeffective0 that obtains after the merging, add constant offset, i.e. a RSRP
Effective=α RSRP
Effective0+ β, α are weighted factor, and β is an invariant.Perhaps UE directly reports RSRPeffective0, is handled by the base station.The measurement of RSRP value need be done according to several and which antenna port the measurement of RSRP, notify by downlink signaling by the base station, in addition as a plurality of antenna ports do and measure and whether need to do to revise and how to revise by notifying by downlink signaling or UE decides in its sole discretion the base station, as long as meet the demands.
Example 4: if 8 physical antennas in base station are example with Fig. 5, at a time suppose physical antenna 1 as antenna port 0, physics 5 antennas are as antenna port 1, and two top ports send CRS, and remaining physical antenna does not send CRS.Physics 2 is as antenna port 0 constantly at next, and physics 6 is as antenna port 1, and two top ports send CRS, and remaining physical antenna does not send CRS.The rest may be inferred, and cycle period can be configured according to top signaling.The polarization mode of physical antenna 1 and physical antenna 5 can be arbitrarily.UE can record the RSRP0 and the RSRP1 of each moment antenna port 0 and antenna port 1.The RSRP0 of antenna antenna port 0 and antenna port 1 and the value of RSRP1 are obtained RSRPeffective0 according to certain merging method.Perhaps RSRPeffective0 is revised and report according to the method for embodiment 3
Example 5: if 8 physical antennas in base station are example with Fig. 5, at a time suppose physical antenna 1 as antenna port 0, this port sends CRS, and remaining physical antenna does not send CRS.Physical antenna 5 is as antenna port 0 constantly for next, and this port sends CRS, and remaining physical antenna does not send CRS.UE can record each RSRP0 constantly of antenna port 0, the RSRP0 that records is carried out obtaining RSRPeffective0 after certain processing report, and perhaps according to the method for embodiment 3 RSRPeffective0 is revised and reports.
In addition, top example 1 is that example describes with Fig. 5 just to example 5, and the antenna setting of other antenna setting such as figure Fig. 2, Fig. 3, Fig. 4 also is applicable to this embodiment, and this illustrates no longer one by one.
Example 6: with Fig. 6 is example, suppose that each AP has a plurality of physical antennas, as AP1 4 physical antennas are arranged, AP2 has 4 physical antennas, only corresponding antenna port of 4 physical antennas of AP1 such as port0, corresponding another physical port of 4 physical antennas of AP2 such as port1.AP1 is distributed in different geographical position with AP2.The CRS of antenna port correspondence can fix or repeating query or send in each physical antenna or physical antenna combination simultaneously.UE records the RSRP of corresponding port, reports the base station through merging with after handling correction then.Can adopt embodiment 3 similar methods.
In addition, Fig. 8, the sending method of Reference Signal Received Power RSRP value is to obtain with the configuration information that UE receives the base station, as shown in Figure 9, the sending method of examining signal received power RSRP value also obtains with the indication of reception base station, specifically comprises the steps:
Step 901: receive the indication that the base station sends;
Step 902: obtain Reference Signal Received Power RSRP value according to described indication;
Step 903: the RSRP value is sent to the base station.
Wherein, indication in the step 901 comprises and uses whole antenna ports to obtain the RSRP value, perhaps uses the part antenna port to obtain the RSRP value.
In addition, the embodiment of the invention provides a kind of dispensing device of Reference Signal Received Power RSRP value, comprising: receiving element, in order to receive the antenna configuration information that the base station sends; Obtain the unit, in order to obtain Reference Signal Received Power RSRP value according to described antenna configuration information; Transmitting element is in order to send to the base station with the RSRP value.Wherein the dispensing device of this embodiment is in order to the correlation step of the sending method embodiment that handles above-mentioned Reference Signal Received Power RSRP value, and therefore concrete processing procedure has detailed description in method embodiment, and this repeats no more.
One of ordinary skill in the art will appreciate that: all or part of step that realizes said method embodiment can be finished by the relevant hardware of program command, aforesaid program can be stored in the computer read/write memory medium, this program is carried out the step that comprises said method embodiment when carrying out; And aforesaid storage medium comprises: various media that can be program code stored such as ROM, RAM, magnetic disc or CD.
Though pass through with reference to some of the preferred embodiment of the invention, the present invention is illustrated and describes, but those of ordinary skill in the art should be understood that and can do various changes to it in the form and details, and without departing from the spirit and scope of the present invention.
Claims (23)
1, a kind of sending method of channel quality information is characterized in that:
Receive the antenna configuration information that the base station sends;
Obtain channel quality information according to described antenna configuration information;
Channel quality information is sent to the base station.
2, method according to claim 1 wherein saidly obtains channel quality information according to described antenna configuration information and specifically comprises:
Obtain the channel fading value of pilot tone antenna according to described antenna configuration information;
Obtain the channel fading value of non-pilot tone antenna according to the channel fading value of described pilot tone antenna;
Obtain channel quality information according to the channel fading value of described pilot tone antenna and the channel fading value of non-pilot tone antenna.
3, method according to claim 2, wherein,
If described antenna is an even linear array, the antenna configuration information that described reception base station sends specifically comprises: number of antennas, strong correlation antenna, antenna are even linear array, pilot tone antenna and non-pilot tone antenna and are not poliarizing antennas;
If described antenna is a uniform circular array, the antenna configuration information that described reception base station sends specifically comprises: number of antennas, strong correlation antenna, antenna are uniform circular array, pilot tone antenna and non-pilot tone antenna and are not poliarizing antennas;
If described antenna is a poliarizing antenna, the antenna configuration information that described reception base station sends specifically comprises: the antenna sets of being made up of a horizontal antenna and vertical antenna in number of antennas, strong correlation antenna, poliarizing antenna, the poliarizing antenna is even linear array, pilot tone antenna and non-pilot tone antenna;
If described antenna is access point AP, the antenna configuration information that described reception base station sends specifically comprises: whether AP number, number of antennas, strong correlation antenna, antenna are even linear array or uniform circular array, pilot tone antenna and non-pilot tone antenna and are poliarizing antennas.
4, method according to claim 3, wherein,
If described antenna is an even linear array, the channel fading value that described channel fading value according to described pilot tone antenna obtains non-pilot tone antenna specifically comprises: the channel fading value that the channel fading value of described pilot tone antenna is calculated described non-pilot tone antenna by linear interpolation or interpolation by proportional parts;
If described antenna is a uniform circular array, the channel fading value that described channel fading value according to described pilot tone antenna obtains non-pilot tone antenna specifically comprises: the channel fading value that the channel fading value of described pilot tone antenna is calculated described non-pilot tone antenna by linear interpolation;
If described antenna is a poliarizing antenna, the channel fading value that described channel fading value according to described pilot tone antenna obtains non-pilot tone antenna specifically comprises: the channel fading value that the channel fading value of described pilot tone antenna is calculated described non-pilot tone antenna by linear interpolation.
If described antenna is access point AP, the channel fading value that described channel fading value according to described pilot tone antenna obtains non-pilot tone antenna specifically comprises: the channel fading value that the channel fading value of described pilot tone antenna is calculated described non-pilot tone antenna by linear interpolation or interpolation by proportional parts.
5,, wherein specifically comprise according to the channel fading value of described pilot tone antenna and the channel fading value acquisition channel quality information of non-pilot tone antenna according to any one described method of claim 1 to 4:
Obtain channel matrix according to the channel fading value of described pilot tone antenna and the channel fading value of non-pilot tone antenna;
Obtain the receiving terminal signal to noise ratio according to described channel matrix;
Obtain channel quality information according to described receiving terminal signal to noise ratio.
6, method according to claim 1 wherein saidly obtains channel quality information according to described antenna configuration information and specifically comprises:
If described antenna is a stand-alone antenna, the antenna configuration information that described reception base station sends specifically comprises: number of antennas, stand-alone antenna.
7, method according to claim 6, described channel fading value according to described antenna configuration information acquisition pilot tone antenna is concrete:
The signal to noise ratio that obtains according to the channel fading value of described pilot tone antenna;
Add that according to signal to noise ratio yield value obtains the signal to noise ratio of revising;
Obtain channel quality information according to the signal to noise ratio of revising.
8, a kind of method of reseptance of channel quality information is characterized in that:
The transmitting antenna configuration information is given subscriber equipment;
Receive the channel quality information that subscriber equipment sends, wherein said channel quality information is to obtain by antenna configuration information.
9, method according to claim 8, wherein said channel quality information are to obtain specifically to comprise by antenna configuration information:
Obtain the channel fading value of pilot tone antenna according to described antenna configuration information;
Obtain the channel fading value of non-pilot tone antenna according to the channel fading value of described pilot tone antenna;
Obtain channel quality information according to the channel fading value of described pilot tone antenna and the channel fading value of non-pilot tone antenna.
10, method according to claim 9, wherein,
If described antenna is an even linear array, the antenna configuration information that described reception base station sends specifically comprises: number of antennas, strong correlation antenna, antenna are even linear array, pilot tone antenna and non-pilot tone antenna and are not poliarizing antennas;
If described antenna is a uniform circular array, the antenna configuration information that described reception base station sends specifically comprises: number of antennas, strong correlation antenna, antenna are uniform circular array, pilot tone antenna and non-pilot tone antenna and are not poliarizing antennas;
If described antenna is a poliarizing antenna, the antenna configuration information that described reception base station sends specifically comprises: the antenna sets of being made up of a horizontal antenna and vertical antenna in number of antennas, strong correlation antenna, poliarizing antenna, the poliarizing antenna is even linear array, pilot tone antenna and non-pilot tone antenna;
If described antenna is access point AP, the antenna configuration information that described reception base station sends specifically comprises: whether AP number, number of antennas, strong correlation antenna, antenna are even linear array or uniform circular array, pilot tone antenna and non-pilot tone antenna and are poliarizing antennas.
11, a kind of dispensing device of channel quality information is characterized in that:
Receiving element is used to receive the antenna configuration information that the base station sends;
Acquiring unit is used for obtaining channel quality information according to described antenna configuration information;
Transmitting element is used for channel quality information is sent to the base station.
12, device according to claim 10, wherein said acquiring unit specifically comprises:
First obtains subelement, is used for obtaining according to described antenna configuration information the channel fading value of pilot tone antenna;
Second obtains subelement, is used for obtaining according to the channel fading value of described pilot tone antenna the channel fading value of non-pilot tone antenna;
The 3rd obtains subelement, is used for obtaining channel quality information according to the channel fading value of described pilot tone antenna and the channel fading value of non-pilot tone antenna.
13, device according to claim 11, wherein,
If described antenna is an even linear array, described antenna configuration information specifically comprises: number of antennas, strong correlation antenna, antenna are even linear array, pilot tone antenna and non-pilot tone antenna and are not poliarizing antennas;
If described antenna is a uniform circular array, described antenna configuration information specifically comprises: number of antennas, strong correlation antenna, antenna are uniform circular array, pilot tone antenna and non-pilot tone antenna and are not poliarizing antennas;
If described antenna is a poliarizing antenna, described antenna configuration information specifically comprises: the antenna sets of being made up of a horizontal antenna and vertical antenna in number of antennas, strong correlation antenna, poliarizing antenna, the poliarizing antenna is even linear array, pilot tone antenna and non-pilot tone antenna;
If described antenna is access point AP, the antenna configuration information that described reception base station sends specifically comprises: whether AP number, number of antennas, strong correlation antenna, antenna are even linear array or uniform circular array, pilot tone antenna and non-pilot tone antenna and are poliarizing antennas.
14, a kind of receiving system of channel quality information is characterized in that:
Transmitting element is used for to subscriber equipment transmitting antenna configuration information;
Receiving system is used to receive the channel quality information that subscriber equipment sends, and wherein, channel quality information is to obtain according to described antenna configuration information.
15, a kind of sending method of Reference Signal Received Power RSRP value is characterized in that:
Receive the antenna configuration information that the base station sends;
Obtain Reference Signal Received Power RSRP value according to described antenna configuration information;
The RSRP value is sent to the base station.
16, method according to claim 15 wherein obtains Reference Signal Received Power RSRP value according to described antenna configuration information and specifically comprises:
Obtain the channel fading value of pilot tone antenna according to described antenna configuration information; Channel fading value according to described pilot tone antenna obtains the RSPR value; Or
Obtain the channel fading value of pilot tone antenna according to described antenna configuration information; Obtain the channel fading value of non-pilot tone antenna according to the channel fading value of described pilot tone antenna; Obtain the RSPR value according to the channel fading value of described pilot tone antenna and the channel fading value of non-pilot tone antenna.
17, method according to claim 16 wherein specifically comprises according to described acquisition RSPR value:
The RSPR value of each pilot tone antenna RSPR value or each pilot tone antenna and non-pilot tone antenna is merged into equivalent RSRP value; Or
The RSPR value of each antenna port is merged into the RSRP value of equivalence; Or
The RSRP that the RSPR value of each antenna port is merged into equivalence is on duty with weighted factor; Or
The RSRP that the RSPR value of each antenna port is merged into equivalence is on duty with behind the weighted factor, adds a deviant again.
18, method according to claim 17, the wherein said concrete merging mode of equivalent RSRP value that is merged into comprises:
High specific merges mode, i.e. equivalence
Or
Selectivity merges mode, promptly equivalent RSRP=max (α RSRP
i, β RSRP
j)+γ, or
Linear merging mode, i.e. equivalence
Or how much merging modes, i.e. equivalence
Or
Adopt the mode of transmit diversity or day line options, it merges mode α corresponding to linearity
i, β
i, γ gets specific value;
Wherein, α, beta, gamma are weight coefficient, wherein RSRP
iBe the RSRP value of i pilot tone antenna correspondence, RSRP
jIt is the RSRP value of j non-pilot tone body antenna correspondence.
19, according to any one described method of claim 15 to 18, wherein,
If described antenna is an even linear array, the antenna configuration information that described reception base station sends specifically comprises: number of antennas, strong correlation antenna, antenna are even linear array, pilot tone antenna and non-pilot tone antenna and are not poliarizing antennas;
If described antenna is a uniform circular array, the antenna configuration information that described reception base station sends specifically comprises: number of antennas, strong correlation antenna, antenna are uniform circular array, pilot tone antenna and non-pilot tone antenna and are not poliarizing antennas;
If described antenna is a poliarizing antenna, the antenna configuration information that described reception base station sends specifically comprises: the antenna sets of being made up of a horizontal antenna and vertical antenna in number of antennas, strong correlation antenna, poliarizing antenna, the poliarizing antenna is even linear array, pilot tone antenna and non-pilot tone antenna;
If described antenna is access point AP, the antenna configuration information that described reception base station sends specifically comprises: whether AP number, number of antennas, strong correlation antenna, antenna are even linear array or uniform circular array, pilot tone antenna and non-pilot tone antenna and are poliarizing antennas.
20, method according to claim 19, wherein,
If described antenna is an even linear array, the channel fading value that described channel fading value according to described pilot tone antenna obtains non-pilot tone antenna specifically comprises: the channel fading value that the channel fading value of described pilot tone antenna is calculated described non-pilot tone antenna by linear interpolation or interpolation by proportional parts;
If described antenna is a uniform circular array, the channel fading value that described channel fading value according to described pilot tone antenna obtains non-pilot tone antenna specifically comprises: the channel fading value that the channel fading value of described pilot tone antenna is calculated described non-pilot tone antenna by linear interpolation;
If described antenna is a poliarizing antenna, the channel fading value that described channel fading value according to described pilot tone antenna obtains non-pilot tone antenna specifically comprises: the channel fading value that the channel fading value of described pilot tone antenna is calculated described non-pilot tone antenna by linear interpolation.
If described antenna is access point AP, the channel fading value that described channel fading value according to described pilot tone antenna obtains non-pilot tone antenna specifically comprises: the channel fading value that the channel fading value of described pilot tone antenna is calculated described non-pilot tone antenna by linear interpolation or interpolation by proportional parts.
21, a kind of sending method of Reference Signal Received Power RSRP value is characterized in that:
Receive the indication that the base station sends;
Obtain Reference Signal Received Power RSRP value according to described indication;
The RSRP value is sent to the base station.
22, method according to claim 21 is characterized in that described indication comprises that the whole antenna port of use obtains the RSRP value, perhaps uses the part antenna port to obtain the RSRP value.
23, a kind of dispensing device of Reference Signal Received Power RSRP value is characterized in that:
Receiving element is in order to receive the antenna configuration information that the base station sends;
Obtain the unit, in order to obtain Reference Signal Received Power RSRP value according to described antenna configuration information;
Transmitting element is in order to send to the base station with the RSRP value.
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| PCT/CN2009/073226 WO2010037285A1 (en) | 2008-09-28 | 2009-08-13 | Method of transmitting and receiving channel quality information and the device thereof |
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| CN103581932B (en) * | 2012-08-09 | 2019-04-05 | 中兴通讯股份有限公司 | A kind of method for measuring pilot frequency and device |
| CN106603137A (en) * | 2015-10-19 | 2017-04-26 | 中兴通讯股份有限公司 | Method and device for combining antennas |
| CN106603137B (en) * | 2015-10-19 | 2021-06-15 | 中兴通讯股份有限公司 | Antenna combination method and device |
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| Publication number | Publication date |
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| WO2010037285A1 (en) | 2010-04-08 |
| CN101686071B (en) | 2014-02-19 |
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