WO2010037285A1 - Method of transmitting and receiving channel quality information and the device thereof - Google Patents

Abstract

A method of transmitting and receiving channel quality information and the device thereof, the method of transmitting channel quality information comprises receiving antenna configuring information transmitted by a base station; obtaining the channel quality information according to the antenna configure information; and transmitting the channel quality information to the base station.

Description

 Method and device for transmitting and receiving channel quality information

 This application is required to be submitted to the China Patent Office on September 28, 2008, the application number is 200810216590.6, and the invention name is "Send and Receive Method and Device for Channel Quality Information". It is also required to be submitted to the China Patent Office on December 3, 2008. The priority of the Chinese Patent Application No. 200810181695.2, entitled "Sending and Receiving of Channel Quality Information, and Its Apparatus", the entire contents of which are hereby incorporated by reference.

Technical field

 The present invention relates to the field of wireless communications, and in particular, to a method and a device for transmitting and receiving channel quality information (CQI).

Background technique

 At present, in the Multiple Input Multiple Output (MIMO) system, in order to improve the received signal-to-noise ratio and improve the user's throughput rate, the long-term evolution LTE standard discussed by the 3rd Generation Partnership Project 3GPP is used. The way of coding. At the same time, beamforming is applied in TD-SCDMA systems. In the LTE standard, beamforming is also written to the standard. In LTE R8, the base station has a maximum of 4 antennas, and provides common antennas of 4 antennas simultaneously on the downlink. When 8 antennas are used for beamforming/precoding, only 4 antenna channels can be obtained. Thus, only channels of 4 antennas can be used, and the actual channel H is not available. At this time, only the precoding matrix of 4 antennas and the CQI obtained from this precoding matrix can be calculated. In this case, the CQI feedback based on common pilots is actually very inaccurate.

 The prior art proposes a CQI estimation based on the existing common pilot. The user equipment UE estimates the channel matrix according to the existing 4 antenna pilots, and then calculates a precoding vector to obtain a CQI according to the CQI, and then feeds back the CQI to the base station. . After the base station obtains the CQI, the MCS notifies the UE according to the CQI fed back by the UE. However, the CQI fed back by the UE is not accurate. The base station may need to further adjust the CQI.

The prior art also proposes a CQI estimation based on pilots of one antenna port. The base station will transmit according to the omnidirectional beam, all antennas transmit the same symbol, and the UE estimates the increase of the omnidirectional beam. Benefit, calculate the CQI, and feed back to the base station. The base station calculates the gain of the beamforming to the omnidirectional beam, corrects the CQI transmitted by the UE, and then transmits the MCS allocated to the UE to the UE according to the modified CQI. However, omnidirectional beams also require pilot shaping, such as pre-processing with antenna port 0 of LTE. However, if the downlink CQI is also estimated based on antenna port 0, the DL CQI does not accurately reflect the downlink channel quality after data channel beamforming.

Summary of the invention

 An object of the embodiments of the present invention is to provide a method for transmitting channel quality information and a device thereof for transmitting accurate channel quality information.

 Another object of the embodiments of the present invention is to provide a method for receiving channel quality information and an apparatus thereof for receiving accurate channel quality information.

 In one aspect, the embodiment of the present invention provides the following technical solution: A method for sending channel quality information includes: receiving antenna configuration information sent by a base station; obtaining channel quality information according to the antenna configuration information; and transmitting channel quality information to the base station.

 On the other hand, an embodiment of the present invention provides a method for receiving channel quality information, including: transmitting antenna configuration information to a user equipment; and receiving channel quality information sent by the user equipment, where the channel quality information is obtained by using antenna configuration information.

 In another aspect, the embodiment of the present invention provides a channel quality information sending apparatus, including: a receiving unit, configured to receive antenna configuration information sent by a base station; and an acquiring unit, configured to obtain channel quality information according to the antenna configuration information; And a unit, configured to send channel quality information to the base station.

 In another aspect, the embodiment of the present invention provides a channel quality information receiving apparatus, including: a sending unit, configured to send antenna configuration information to a user equipment; and a receiving apparatus, configured to receive channel quality information sent by the user equipment, where, the channel The quality information is obtained based on the antenna configuration information.

 In another aspect, the embodiment of the present invention provides a method for transmitting a reference signal received power RSRP value, including: receiving antenna configuration information sent by a base station; obtaining a reference signal received power RSRP value according to the antenna configuration information; and sending the RSRP value to Base station.

On the other hand, an embodiment of the present invention provides a sender of a reference signal receiving power RSRP value. The method includes: receiving an indication sent by the base station; obtaining a reference signal received power RSRP value according to the indication; and transmitting the RSRP value to the base station.

 On the other hand, an embodiment of the present invention provides a device for transmitting a reference signal received power RSRP value, including: a receiving unit, configured to receive antenna configuration information sent by a base station; and an obtaining unit, configured to obtain a reference signal according to the antenna configuration information. Receive power RSRP value; a sending unit, configured to send the RSRP value to the base station.

 The embodiment of the present invention obtains channel quality information according to the antenna configuration information by receiving the antenna configuration information sent by the base station, and sends the channel quality information to the base station, so that the channel quality information is obtained by using the base station configuration information, and the channel quality information thus obtained is more accurate. . In addition, the antenna configuration information sent by the base station may be received; the reference signal received power RSRP value is obtained according to the antenna configuration information; and the RSRP value is sent to the base station, where the RSRP value is obtained by using the base station configuration information, and the channel quality information thus obtained is obtained. more precise.

DRAWINGS

 1 is a schematic flow chart of a method for transmitting channel quality information according to an embodiment of the present invention;

 2 is a schematic structural view of an embodiment in which an antenna of the present invention is arranged in a uniform line array;

 3 is a schematic structural view of an embodiment in which eight antennas of the present invention are provided with a uniform line array;

 4 is a schematic structural view of an embodiment in which the antenna of the present invention is a uniform circular array;

 5 is a schematic structural view of an embodiment in which an antenna of the present invention is polarized;

 6 is a schematic structural diagram of an embodiment of a plurality of APAPs communicating with a user at the same time; FIG. 7 is a schematic structural diagram of an embodiment of a device for transmitting channel quality information according to the present invention;

 8 is a schematic flow chart of a method for transmitting a reference signal received power RSRP value according to an embodiment of the present invention;

 Figure 9 is a flow diagram showing a method of transmitting a reference signal received power RSRP value according to an embodiment of the present invention.

detailed description

In order to make the objects, technical solutions and advantages of the present invention more clear, the present invention will be described below with reference to the accompanying drawings. The embodiments of the invention are described in further detail.

 A first embodiment of the present invention provides a method for transmitting channel quality information. As shown in FIG. 1, the method includes the following steps:

 Step 101: The base station sends antenna configuration information to the UE.

 The antenna configuration information is configured by the base station according to different antenna position settings. For example, if the antenna position is set to a uniform hook line array, the antenna configuration information sent by the receiving base station specifically includes: the number of antennas, the strong correlation antenna, and the antenna. For the average hook line array, the pilot antenna and the non-pilot antenna, and the non-polarized antenna; if the antenna position is set to a uniform round array, the antenna configuration information sent by the receiving base station specifically includes: the number of antennas, the strong correlation antenna, and the antenna The uniform circular array, the pilot antenna and the non-pilot antenna, and the non-polarized antenna; if the antenna position is set to be a polarized antenna, the antenna configuration information sent by the receiving base station specifically includes: the number of antennas, the strong correlation antenna, and the polarized antenna The antenna group consisting of a horizontal antenna and a vertical antenna in the polarized antenna is a uniform hook line array, a pilot antenna, and a non-pilot antenna. If the antenna is an independent antenna, the antenna configuration information sent by the receiving base station specifically includes: Number, independent antenna; if the antenna is an access point AP, the receiving base station sends The antenna configuration information includes: an AP number, an antenna number, a strong correlation antenna, an antenna hook line array or a square hook array, a pilot antenna and a non-pilot antenna, and whether it is a polarized antenna.

 Step 102: After receiving the antenna configuration information, the UE obtains channel quality information according to the antenna configuration information.

 The obtaining channel quality information according to the antenna configuration information specifically includes:

The mobility management related measurement information such as the channel fading value of the pilot antenna obtained by the antenna configuration information and the Reference Signal Receiving Power (RSRP), which will be described in detail below. The pilot antenna is an antenna for transmitting a pilot; and the channel fading value of the non-pilot antenna and the measurement information related to mobility management such as RSRP (RSRQ, RSSI) are obtained according to the channel fading value of the pilot antenna, where the non-pilot The antenna is an antenna that does not transmit a pilot; obtaining channel quality information and measurement information related to mobility management such as RSRP (RSRQ, RSSI) according to a channel fading value of the pilot antenna and a channel fading value of the non-pilot antenna, where Pilot antenna Obtaining channel quality information by channel fading value and channel fading value of the non-pilot antenna specifically includes: obtaining a channel matrix and RSRP (RSRQ, RSSI), etc. according to a channel fading value of the pilot antenna and a channel fading value of the non-pilot antenna Management related measurement information; obtaining measurement information related to mobility management such as signal-to-noise ratio at the receiving end and RSRP (RSRQ, RSSI) according to the channel matrix; and obtaining channel quality information according to the signal-to-noise ratio of the receiving end.

 The method for calculating the channel fading value of the non-pilot antenna according to the channel fading value of the pilot antenna is different according to the different antenna position settings in step 101. If the antenna is a uniform line array, the channel fading value of the pilot antenna is calculated by linear interpolation or proportional interpolation to calculate the channel fading value of the non-pilot antenna; if the antenna is a uniformly rounded array, the pilot antenna is The channel fading value is calculated by linear interpolation to calculate the channel fading value of the non-pilot antenna; if the antenna is a polarized antenna, the channel fading value of the pilot antenna is linearly interpolated to calculate the channel fading value of the non-pilot antenna, The measurement information related to mobility management such as RSRP (RSRQ, RSSI) of the non-pilot antenna can be obtained according to the calculated channel fading value.

 If the antenna is an independent antenna, obtaining a channel fading value of the pilot antenna according to the antenna configuration information specifically includes: a signal to noise ratio obtained according to a channel fading value of the pilot antenna; and obtaining a modified signal according to a signal to noise ratio plus a gain value. Noise ratio; channel quality information is obtained based on the corrected signal to noise ratio.

 Step 103: The UE sends the obtained channel quality information to the base station.

 The channel quality information obtained according to the first implementation of the present invention is a channel fading value of the non-pilot antenna obtained according to the configuration information of the base station, and then the quality information calculated according to the pilot channel fading value and the non-pilot channel fading value is more accurate.

 The channel quality information obtained according to the first implementation of the present invention is measurement information related to mobility management such as RSRP (RSRQ, RSSI) of the non-pilot antenna obtained according to the configuration information of the base station, and then according to the pilot channel RSRP (RSRQ, RSSI) The measured values and/or the equivalent RSRP (RSRQ, RSSI) measurements calculated from the non-pilot channel RSRP (RSRQ, RSSI) measurements are more accurate, and then the equivalent RSRP (RSRQ, RSSI) measurements are reported to the base station. .

FIG. 1 is a flow chart showing a method for transmitting channel quality information according to a first embodiment of the present invention; The intention is described in detail below in conjunction with other drawings and specific embodiments.

 The antenna of the present invention is a schematic structural diagram of an embodiment of a uniform linear array. As shown in FIG. 2, wherein the antenna is a uniform linear array, the antenna configuration information received in step 101 according to the first embodiment includes: The channel quality information of step 102 is obtained.

 Assuming a flat fading channel (according to the channel characteristics on the OFDM subcarrier) according to equation (1),

Hj = (h _f xd ₂ +h _k xd _l )/(d _l +d ₂ ) ( ) where i, j, k are any three of M antennas, of which two of i, j, k One is to transmit a pilot antenna, and the other is a non-transmitting pilot antenna. Hi, hj, hk are channel weak values, dl is the distance between hi and hj antennas, and d2 is the distance between hj and hk antennas. There are two antennas for transmitting pilot antennas, and one antenna for untransmitted pilots may have the following combinations: hi, hj are antennas for transmitting pilots, and hk is antennas for transmitting pilots; hi, hk For transmitting the pilot antenna, hj is the antenna for transmitting the non-pilot; hj, hk is the antenna for transmitting the pilot, and hi is the antenna for which the pilot is not transmitted. The above three possibilities can be calculated by the formula (1) to unknown channel values. The channel weakening value of the pilot antenna in which the pilot is transmitted is calculated by the formula (2):

h = yxa~ ^l -yi a (2)

 Where a is the pilot symbol and y is the received signal, where the channel is assumed to be a flat fading channel, and at the receiving end, a, y is known, and the fading value h is calculated according to equation (2).

 After calculating hi, hj, and hk as the channel weakening value according to the formula (1) (2), that is, the channel of the non-pilot antenna is obtained from the channel fading values of the pilot antennas closest to the non-pilot antenna among the M antennas. The fading value is then obtained according to the channel fading value of the pilot antenna and the channel fading value of the non-pilot antenna, and the channel matrix of the UE receiving an antenna is obtained, as shown in the formula (3):

=[!!„,..., h _1M ] ( 3 )

Similarly, if there are M transmit antennas, D of which transmit pilots, and the UE has N receive antennas, then the ith receive antenna of the UE can estimate the channels of the M transmit antennas, denoted as Hi, which is an I x The line vector of M. The N receiving antennas of the UE and the M transmitting antennas form a channel matrix H, N x M to the matrix.

 In (3-1), Hi=[hil,..., hiM];

Then, according to the channel matrix H, the signal-to-noise ratio SNR1 of the first layer of the receiving end is obtained, and the specific calculation is as shown in formula (4):

In (4), T = GHV, G is the weighted matrix QxN at the receiving end, H is the N x M channel matrix, V is the precoding matrix of the transmitting end, the vector of MxQ, and Q is the number of layers transmitted. Expressed as 2 is the noise power and P is the signal power. In (4), the mean of £ ( ), ^{Ρ = £} (Μ) is the signal power, Η is the Ν χΜ channel matrix, V is the precoding matrix of the transmitter, and the vector of MxQ.

In (4), T = GHV, G is the weighted matrix QxN at the receiving end, H is the N x M channel matrix, V is the precoding matrix of the transmitting end, the vector of MxQ, and Q is the number of layers transmitted. Expressed as 2 is the noise power and P is the signal power. In (4), E ( X ) represents the mean of X, ^{Ρ = £} ^ ) is the signal power, Η is the N xM channel matrix, V is the precoding matrix of the transmitter, and the vector of MxQ.

 Formula (4) is calculated from the following mathematical model,

z = Gy = GHVs + Gn = Ts + Gn ( 4 _ ]_ ) In (4- 1 ), s is the transmitted symbol vector of Qx 1, n is N χ 1 zero mean, Gaussian white noise with variance of ² Vector noise vector. In (4- 1 ), ^{= // ί3⁄4 +} " is the receive vector.

 Then, the channel quality information CQI is obtained according to the signal-to-noise ratio (SNR) of the receiving end, and the method for searching the table, or any other existing methods, may be specifically used, and details are not described herein again.

If the base station uses 8 antennas and has a uniform line array, the spacing is 0.5λ, as shown in Figure 3, where In step 101, the information that the base station needs to send to the terminal is 1. the number of antennas of the base station, 2. the strong correlation antenna, 3. the shape of the antenna, the average hook line array, and the antennas of the base station transmit pilots. The antenna is not a polarized antenna.

 Where the antennas 1, 3, 5, 8 transmit the pilot antennas of the pilot, the channel fading values hi, h3, h5, h8 of the antennas 1, 3, 5, 8 can be calculated according to the formula (2), the antennas 2, 4 6, 6 and 7 are non-pilot antennas that do not transmit pilots, and channel fading values h2, h4, h6, h7 are obtained by interpolation, wherein h2 of specific antenna 2 needs to be calculated from hi, h3 of antennas 1, 3; The h4 of 4 needs to be calculated from h3, h5 of the antennas 3, 5; the h6 and h7 of the antenna 6 and the antenna 7 need to be calculated from the antenna 5 and the h5, h8 of the antenna 8, according to the linear interpolation method, according to the formula (5) ) get h2, h4, h6, h7.

/ _3⁄4 =(/ _3⁄4 +h )/2 h ₄ =(h +h ₅ )/2 h ₆ = 2h ₅ /3 + h 3 ^ =^13 + 2^/3 ( ₅ ) Then according to the formula (3 Or (3-1) Obtain the channel matrix H:

 Then, according to (4), the SNR is obtained, and then the CQI is obtained according to the SNR.

 In addition, the antenna shown in FIG. 2 is a schematic structural diagram of a uniform line array. This embodiment can also use the proportional interpolation to obtain the channel quality information of step 102.

 Specifically as the formula (6)

Where hi, hj, hk are channel weak values, dl is the distance between hi and hj antennas, and d2 is the distance between hj and hk antennas. If two antennas are antennas for transmitting pilots, one antenna is an antenna for which pilots are not transmitted. There may be the following combinations, hi, hj are the antennas transmitting the pilot, hk is the antenna without the pilot; hi, hk is the antenna transmitting the pilot, hj is the antenna transmitting the non-pilot; hj, hk is the transmission The antenna of the pilot, hi is the antenna without the pilot transmitted.

 The hi, hj, and hk are calculated according to the proportional interpolation, and the CQI is obtained according to the formula (3) or (3-1), (4), which is the same as the above, and will not be described again.

In addition, as shown in FIG. 3, a uniform linear array is set with 8 antennas, and h2, h4, h6, hi can also be calculated by using proportional interpolation, wherein proportional interpolation considers that the ratio of channel fading values of adjacent antennas is the same, specifically As formula (7)

Then get h2, h4, h6, hi according to formula (8):

 Calculate h2, h4, h6, h7 according to the proportional interpolation, and obtain the CQI according to the formula (3) or (3-1), (4), which is the same as the above, and will not be described again.

 The antenna of the present invention is a schematic structural diagram of an embodiment in which the antenna is a uniform circular array. As shown in FIG. 4, the antenna configuration information received in step 101 according to the first embodiment is as follows: 1. The number of antennas of the base station. 2. Strong correlation antenna; 3. The shape of the antenna is a circular array; 4. The antennas of the base station transmit pilots; 5. The antenna is not a polarized antenna. The line type interpolation is then used to obtain the channel quality information of step 102.

 As shown in Fig. 4, the pilot obtained by the configuration information is transmitted on that antenna, and the antenna transmitting the pilot closest to the antenna of the untransmitted pilot can be obtained. It is assumed that the antennas 1, 3, 5, 7 transmit pilots, and the UE can obtain hl, h3, h5, h7 on the antennas 1, 3, 5, 7 according to the formula (2), and then according to the antennas 2, 4 in the configuration information. 6, 8 and the relative position of the antenna 1, 3, 5, 7, that is, the UE knows that the antenna 1 is adjacent to the antenna 2, 3; adjacent to the antenna 4 is the antenna 3, 5; adjacent to the antenna 6 is Antennas 5, 7; adjacent to antenna 8 are antennas 7, 1, to obtain h2, h4, h6, h8, specifically using linear interpolation, as shown in equation (9):

/ ¾ = (/ ¾ + / ¾) / 2 Λ 4 = (/ ¾ + Λ 5) / 2 h 6 = {Η 5 + Η Ί) Ι2 / ¾ = (/ ¾ + Η Ί) Ι2 ( such U Ε The channel fading values of all the antennas are obtained, and then the SNR and CQI are obtained according to the formula (3) or (3-1), (4).

The antenna of the present invention is a schematic structural diagram of an embodiment of polarization setting, as shown in FIG. 5, wherein for the antenna to be polarized, the base station divides 8 antennas into 4 groups, each group includes two antennas, and one is a horizontal pole. One is vertical polarization. The spacing between each group is 0.5λ. The antenna configuration information received according to step 101 in this embodiment includes: 1. The number of antennas of the base station is 8; 2. The antenna is a polarized antenna, and the antennas 1, 2, 3, and 4 are horizontally polarized, 5, 6, and 7. 8 is vertical polarization; 3. strong correlation antenna; 4. antenna The shape of the group is a uniform line array; 5. Antennas 1, 4, 5, 8 transmit pilots, and antennas 2, 3, 6, and 7 do not transmit pilots. The line type interpolation is then used to obtain the channel quality information of step 102. Specifically, as shown in FIG. 5, the UE obtains antennas 1 , 2, 3, and 4 in 8 antennas through configuration information, and is a polarization mode, and antennas 5, 6, 7, 8 are polarization modes. The antennas 1, 5 are a group, the antennas 2, 6 are a group, the antennas 3, 7 are a group, and the antennas 4, 8 are a group. Among the two antennas in a group, the channels of the two antennas are independent due to different polarization modes. The antennas for which the UE obtains the transmission pilot notified by the base station are 1, 4, 5, 8. Antennas 2, 3, 6, 7 are non-pilot antennas whose channel fading values need to be estimated. Since it is a polarized antenna, the channel of the same polarization type antenna is correlated. That is, the channels on the antennas 1, 2, 3, 4 are correlated, and the channels on the antennas 5, 6, 7, 8 are correlated. Then, the channel fading values on the antennas 2, 3 are obtained by the channel fading values of the antennas 1, 4, and the channel fading values on the antennas 6, 7 are obtained by the channel fading values on the antennas 5, 8. Where hi, h4, h5, h8 are obtained according to formula (2), and linear interpolation is used, according to formula (10),

/ _3⁄4 =Λ ₄ /3 + 2/ _3⁄4 /3 /3⁄4 =2Λ ₄ /3 + /3⁄4/3. h ₆ =/3⁄4/3 + 2Λ ₅ /3 h ₇ =2h 3 + h ₅ /3 ^ ^ The channel fading values h2, h3, h6, h7 of the non-pilot antenna are obtained. Thus, the UE obtains channel fading values of all antennas, and then obtains SNR and CQI according to formulas (3) or (3-1), (4).

 In addition, if the antenna configuration information sent by the base station in step 101 includes one, two, three or even more APs simultaneously communicating with one user, as shown in FIG. 6, a scenario in which multiple APs simultaneously communicate with one UE. At this time, there are many combinations of antennas. For example, an AP may have 1, 2, 4, or 8 antennas. If two APs communicate with one UE, the two APs may be combined into two, three, four, and four. 5, 6, 8, 9, 10, 12, 16 antennas. If there are 3 APs, there can be more combinations. In this case, designing the pilot format of the antenna includes all the possible costs.

In step 101, the antenna configuration information sent by the base station to the UE is: 1. AP number; 2. Each AP is regarded as a base station, and the embodiment corresponding to FIG. 3, FIG. 4, FIG. 5, and FIG. 6 of the embodiment is notified. . According to the embodiment corresponding to FIG. 3, FIG. 4, FIG. 5, and FIG. 6, the channel fading values on all AP antennas are obtained, and then the antenna composition of all APs is regarded as a large MIMO, and the CQI is obtained by a conventional method. In step 101, the antenna configuration information sent by the base station to the UE is: 1. The antenna group number (corresponding to the AP number). 2. Each antenna group is notified according to the embodiment corresponding to FIG. 3, FIG. 4, and FIG. 5 of the embodiment. According to the embodiment corresponding to FIG. 3, FIG. 4 and FIG. 5, the channel fading values on all AP antennas are obtained, and then the antenna composition of all APs is regarded as a large MIMO, and the CQI is obtained according to the method of formula (4).

 In step 101, the antenna configuration information sent by the base station to the UE is: 1. The number of antennas of all APs, which is equivalent to the number of base station antennas of Embodiment 4; 2. The independent antenna, the CQI is obtained according to the embodiment of the independent antenna described below. .

 In addition, if the antennas in the antenna configuration information sent by the base station in step 101 are independent, the UE is unable to obtain the channel of the antenna to which the common pilot is not transmitted. The antenna configuration information envelope sent by the base station at this time: 1. The number of antennas of the base station; 2. The independent antenna. The UE obtains 8 antennas as an example. The 8 antennas are independent. Independent means that the channel on the antenna is independent or the correlation is very weak. At this time, the channel of the antenna that transmits the pilot cannot be obtained by interpolation. Then step 102 obtains channel quality information. Specifically include:

 The signal-to-noise ratio obtained according to the channel fading value of the pilot antenna specifically includes: first obtaining a channel fading value of the pilot antenna according to formula (2), and then calculating a signal-to-noise ratio according to formula (4); The upper gain value obtains the corrected signal-to-noise ratio; specifically, 8 antennas are taken as an example,

The gain of the four antennas is approximately ^{1 Q 1} °gi. ^{(8/4) =} 3iffi; or UE according to the actual number of antennas, setting a lookup table, the number of base station antennas directly found gain values corresponding to four antennas of the SNR and the estimated SNR plus the value of the actual gain of the SNR;

 The channel quality information is obtained according to the modified signal to noise ratio. This step is the same as the above, and will not be described again.

 In addition, another embodiment of the present invention provides a channel quality information transmitting apparatus. As shown in FIG. 7, the apparatus may be a UE 10, which is in communication with a channel quality information receiving apparatus, and the receiving apparatus may be a base station 20. The UE10 specifically includes:

The receiving unit 11 is configured to receive antenna configuration information sent by the base station 20, where the base station 20 includes The sending unit 21 is configured to send antenna configuration information to the UE 10;

 The antenna configuration information is configured by the base station 20 according to different antenna position settings. For example, if the antenna position is set to a uniform hook line array, the antenna configuration information specifically includes: the number of antennas, the strong correlation antenna, and the antenna are uniform lines. The array, the pilot antenna and the non-pilot antenna, and the non-polarized antenna; if the antenna position is set to a rounded array, the antenna configuration information sent by the receiving base station specifically includes: the number of antennas, the strong correlation antenna, and the antenna is a uniform circular array , the pilot antenna and the non-pilot antenna, and the non-polarized antenna; if the antenna position is set to be a polarized antenna, the antenna configuration information sent by the receiving base station specifically includes: the number of antennas, the strong correlation antenna, the polarized antenna, and the polarized antenna The antenna group consisting of a horizontal antenna and a vertical antenna is a uniform hook line array, a pilot antenna and a non-pilot antenna; if the antenna is an independent antenna, the antenna configuration information sent by the receiving base station specifically includes: the number of antennas, the independent antenna If the antenna is an access point AP, the antenna configuration sent by the receiving base station The specific information includes: AP number, number of antennas, strong correlation antenna, antenna is a uniform linear array or uniform circular array, pilot antenna and non-pilot antenna, and whether it is a polarized antenna. 3, 4, 5, and 6 are described in the above embodiments, and details are not described herein again.

 The obtaining unit 12 is configured to obtain channel quality information according to the antenna configuration information.

 The obtaining unit 12 includes:

 a first obtaining subunit, configured to obtain, according to the antenna configuration information, a channel fading value of the pilot antenna, where the pilot antenna is an antenna for transmitting a pilot;

 a second obtaining subunit, configured to obtain a channel fading value of the non-pilot antenna according to a channel fading value of the pilot antenna, where the non-pilot antenna is an antenna that does not transmit a pilot;

 a third acquiring subunit, configured to obtain channel quality information according to a channel fading value of the pilot antenna and a channel fading value of the non-pilot antenna, where a channel fading value of the pilot antenna and a channel fading value of the non-pilot antenna are obtained The channel quality information specifically includes:

Obtaining a channel matrix according to a channel fading value of the pilot antenna and a channel fading value of the non-pilot antenna; obtaining a signal-to-noise ratio of the receiving end according to the channel matrix; and obtaining channel quality information according to the signal-to-noise ratio of the receiving end. The calculation method of the channel fading value of the non-pilot antenna is different according to the channel fading value of the pilot antenna, according to the different antenna position setting of the receiving unit 11. If the antenna is a uniform hook line array, the channel fading value of the pilot antenna is calculated by linear interpolation or proportional interpolation to calculate the channel fading value of the non-pilot antenna; if the antenna is a uniformly rounded array, the pilot antenna is used. The channel fading value is calculated by linear interpolation to calculate the channel fading value of the non-pilot antenna; if the antenna is a polarized antenna, the channel fading value of the pilot antenna is linearly interpolated to calculate the channel fading value of the non-pilot antenna .

 If the antenna is an independent antenna, obtaining a channel fading value of the pilot antenna according to the antenna configuration information specifically includes: a signal to noise ratio obtained according to a channel fading value of the pilot antenna; and obtaining a modified signal according to a signal to noise ratio plus a gain value. Noise ratio; channel quality information is obtained based on the corrected signal to noise ratio.

 The above-mentioned CQI values calculated according to different antenna positions can be obtained according to the corresponding formulas (1) to (9) in the above specific embodiments, which have been described in detail above, and will not be described again.

 The sending unit 13 is configured to send channel quality information to the base station 20. The base station 20 includes a receiving device 22 for receiving channel quality information transmitted by the transmitting unit 13, wherein the channel quality information is obtained according to the antenna configuration information.

 The channel quality information obtained by the transmitting apparatus of the channel quality information provided by the embodiment is a channel fading value of the non-pilot antenna obtained according to the configuration information of the base station, and then calculated according to the pilot channel fading value and the non-pilot channel fading value. Quality information will be more accurate.

 In addition, the channel quality information may be obtained by calculating the pilot channel fading value and the non-pilot channel fading value according to the configuration information sent by the receiving base station, and the channel quality information may further include the reference signal received power RSRP value, as shown in FIG. The invention provides a method for transmitting a reference signal received power RSRP value, including:

 Step 801: Receive antenna configuration information sent by a base station.

 Step 802: Obtain a reference signal received power RSRP value according to the antenna configuration information. Step 803: Send an RSRP value to the base station.

Step 802 specifically includes: obtaining channel fading of the pilot antenna according to the antenna configuration information. a value; an RSPR value is obtained according to a channel fading value of the pilot antenna. Or obtaining a channel fading value of the pilot antenna according to the antenna configuration information; obtaining a channel fading value of the non-pilot antenna according to the channel fading value of the pilot antenna; and determining, according to the channel fading value of the pilot antenna and the non-pilot antenna The channel fading value obtains the RSPR value.

 The obtaining the RSPR value specifically includes: combining each pilot antenna or the RSPR value of each pilot antenna and the non-pilot antenna into an equivalent RSRP value; or combining the RSPR values of each antenna port into an equivalent RSRP value; or combine the RSPR values of each antenna port into an equivalent RSRP value multiplied by a weighting factor; or combine the RSPR values of each antenna port into an equivalent RSRP value multiplied by a weighting factor, plus a bias The shift value will be described in detail in the following examples.

 The specific combination of the merger into the equivalent RSRP value includes:

 According to the calculated channel matrix H, the measured values of the RSRP (RSRQ, RSSI) of the pilot channel and/or the non-pilot channel can be calculated. If multiple antennas are received, the RSRP (RSRQ, RSSI) of each receiving antenna can be obtained. The measured values are subjected to a certain weighted combination and correction to obtain measured values such as RSRP (RSRQ, RSSI) of the pilot channel and/or the non-pilot channel.

It is assumed that the RSRP value obtained by the pilot channel is the sequence number of the i-th pilot channel. The RSRP value obtained by the non-pilot channel is j, which is the sequence number of the non-pilot channel. Then, according to ^ and ^ ⁷ ^', a certain weighted combination and correction is performed to obtain an equivalent RSRP value. The specific method is as follows:

(1) Maximum ratio merger

 (2) Selective merger

RSRP = maxiaRSRP,, fiRSRP _j ) + γ

(3) Linear combination, the appropriate weight selection can correspond to the effect of transmit diversity.

 Ν Μ

RSRP = ^ a.RSRP, fi _i RSRP _j + γ

(4) Geometric merge RSRP = [f[ RSRP ₁ fl (RSRP _] ) ^β †^' ^M '> + γ When =0, it means that the non-pilot channel does not participate in the calculation, and =1 means that the non-pilot channel participates in the calculation. Wherein, ", β, is a weighting coefficient, which may take different values, where RSRPi is the RSRP value corresponding to the ith pilot antenna, and RSRPj is the RSRP value corresponding to the j-th non-pilot antenna. In addition, this embodiment only The manner in which the RSRP value is obtained is described. Other measured values such as RSRQ and RSSI are processed in the same manner as RSRP, and will not be described again.

 Example 1: If the base station has 8 physical antennas, the transmission method of the reference signal received power RSRP value is specifically illustrated in FIG. 5, H is not 1, 2, 3, 4 combined as antenna port 0; 5, 6, 7, 8 merge As antenna port 1. The UE can measure RSRP0 and RSRP1 of antenna port 0 and antenna port 1. Here, 1, 2, 3, 4 are the same polarization; 5, 6, 7, 8 can be another polarization, and of course, can be the same polarization as 1, 2, 3, 4.

 Set the values of RSRP0 and RSRP1 for antenna port 0 and antenna port 1.

 The equivalent RSRP is obtained according to the combining methods (1) to (3), and is reported to the base station after a certain processing.

 Example 2: 4 For example, the base station has 8 physical antennas. Taking Figure 5 as an example, H has no physical antenna 1 as the antenna port 0; physical antenna 5 serves as the antenna port 1. The above two ports send CRS; the remaining physical antennas do not send CRS. Physical antenna 1 and physical antenna 5 can be the same or different polarization modes, and UE can measure RSRP0 and RSRP1 of antenna port 0 and antenna port 1. The values of RSRP0 and RSRP1 of antenna port 0 and antenna port 1 are equivalent to RSRPeffectiveO according to a certain combination method. Because the remaining physical antennas do not send CRS, they can be considered as independent. According to the signaling notification of the base station, it can be determined whether an offset can be added to the RSRP obtained after the combination, such as the above 8 antennas, which has been estimated. The RSRP of the two antennas is added, and then 10*log3=4.7dB is added.

That is RSRP _effeetlve = «RSRP _effeetlve . + , "For the weighting factor, it can be 1, a constant factor, which can be 4.7dB. Or directly report the combined RSRPeffectiveO directly or on Newspaper.

 Example 3: 4 For example, the base station has 8 physical antennas. Taking Figure 5 as an example, H has no physical antenna 1 as the antenna port 0; physical antenna 5 serves as the antenna port 1. The upper two ports send CRS; H has no physical antenna 4 as antenna port 2; physical antenna 8 acts as antenna port 3. The two ports above send CRS. The remaining physical antennas do not transmit CR S. Physical antenna 1 and physical antenna 5 may be the same or different polarization modes. According to the signaling notification of the base station, it is decided to use several and several antenna ports for RSRP measurement. The UE can measure RSRP0 and RSRP 1 of antenna port 0 and antenna port 1, and the UE can measure RSRP2 and RSRP3 of antenna port 2 and antenna port 3, and the value of RSRP of antenna ports 0 to 3 is equivalent according to a certain combining method. RSRPeffectiveO. If the base station informs the UE to perform the RSRP correction or the UE itself to modify, the channel value of the physical antenna that does not send the CRS may be estimated by the difference method, and then the RSRPmoddify value is calculated, and then the equivalent RSRP effectiveO obtained above is obtained. The value is corrected.

RSRP _effectlve = "RSRP _effectlve . + (l-«)RSRP _m . _{ddlfy +} , is the force weight factor, β is a constant factor. Or treat RSRPO, RSRP1, RSRP2 and RSRP3 and RSRPmoddify equally, using the merge described above The method is merged. Because the remaining physical antennas do not send CRS, they can be considered as independent, and a constant offset can be added to the RSRPeffectiveO obtained after the combination.

"For the weighting factor, it is a constant factor. Or the UE directly reports RSRPeffectiveO, which is processed by the base station. The measurement of the RSRP value needs to be based on several and several antenna ports for RSRP measurement, and the base station notifies by downlink signaling. In addition, if multiple antenna ports are used for measurement and whether correction is needed and how to be corrected by the base station to notify by downlink signaling or by the UE, as long as the requirements are met.

Example 4: If the base station has 8 physical antennas, as shown in Figure 5, at a certain moment, physical antenna 1 is assumed to be antenna port 0, physical 5 antenna is used as antenna port 1, and the upper two ports transmit CRS, and the remaining physical antennas are not. Send CRS. At the next moment physical 2 acts as antenna port 0, physical 6 as Antenna port 1, the upper two ports send CRS, and the remaining physical antennas do not send CRS. And so on, the cycle period can be configured according to the upper layer signaling. The polarization mode of the physical antenna 1 and the physical antenna 5 may be arbitrary. The UE can measure RSRP0 and RSRP 1 of antenna port 0 and antenna port 1 at various times. The values of RSRP0 and RSRP 1 of antenna antenna port 0 and antenna port 1 are obtained according to a certain combining method to obtain RSRP effectiveO. Or correcting and reporting RSRPeffectiveO according to the method of Embodiment 3.

 Example 5: If the base station has 8 physical antennas, take Figure 5 as an example. At a certain moment, assume that physical antenna 1 is used as antenna port 0. This port sends CRS, and the remaining physical antennas do not send CRS. The next time physical antenna 5 is used as antenna port 0, this port sends CRS, and the remaining physical antennas do not send CRS. The UE can measure the RSRP0 at each time of the antenna port 0, and then perform the RSRPO on the measured RSRPO to report the RSRP effectiveO, or modify and report the RSRP effectiveO according to the method in Embodiment 3.

 In addition, the above examples 1 to 5 are only illustrated by taking FIG. 5 as an example. Other antenna arrangements as shown in FIG. 2, FIG. 3, and FIG. 4 are also applicable to this embodiment, which is no longer exemplified.

 Example 6: Take Figure 6 as an example. Assume that each AP has multiple physical antennas. For example, the API has 4 physical antennas, AP2 has 4 physical antennas, and the API's 4 physical antennas correspond to only one antenna port such as portO and AP2. The four physical antennas correspond to another physical port such as portl. The API and AP2 are distributed in different geographical locations. The CRS corresponding to the antenna port can be fixed or polled or transmitted simultaneously on each physical antenna or physical antenna combination. The UE measures the RSRP of the corresponding port, and then performs the merging and processing correction and reports it to the base station. A similar method to that of Embodiment 3 can be employed.

 In addition, FIG. 8 is a method for transmitting a reference signal received power RSRP value, which is obtained by receiving configuration information of a base station by a UE. As shown in FIG. 9, a method for transmitting a test signal received power RSRP value is also obtained by receiving an indication of a base station, specifically Including the following steps:

 Step 901: Receive an indication sent by the base station.

 Step 902: Obtain a reference signal received power RSRP value according to the indication.

Step 903: Send the RSRP value to the base station. The step 901 indicates that the RSRP value is obtained by using all the antenna ports, or the RSRP value is obtained by using a part of the antenna ports.

 In addition, the embodiment of the present invention provides a device for transmitting a reference signal receiving power RSRP value, including: a receiving unit, configured to receive antenna configuration information sent by a base station; and an obtaining unit, configured to obtain a reference signal receiving power according to the antenna configuration information. RSRP value; a sending unit, configured to send the RSRP value to the base station. The transmitting device of the embodiment is used to process the related steps of the foregoing method for transmitting the reference signal receiving power RSRP value. Therefore, the specific processing procedure is detailed in the method embodiment, and details are not described herein again.

 A person skilled in the art can understand that all or part of the steps of implementing the above method embodiments may be completed by using hardware related to program instructions, and the foregoing program may be stored in a computer readable storage medium, and the program is executed when executed. The foregoing steps include the steps of the foregoing method embodiments; and the foregoing storage medium includes: a medium that can store program codes, such as a ROM, a RAM, a magnetic disk, or an optical disk.

 While the invention has been illustrated and described with reference to the preferred embodiments embodiments The spirit and scope of the invention.

Claims

Claim

 A method for transmitting channel quality information, characterized in that:

 Receiving antenna configuration information sent by the base station;

 Obtaining channel quality information according to the antenna configuration information;

 The channel quality information is transmitted to the base station.

 The method according to claim 1, wherein the obtaining the channel quality information according to the antenna configuration information specifically includes:

 Obtaining a channel fading value of the pilot antenna according to the antenna configuration information;

 Obtaining a channel fading value of the non-pilot antenna according to a channel fading value of the pilot antenna; obtaining channel quality information according to a channel fading value of the pilot antenna and a channel fading value of the non-pilot antenna.

 3. The method according to claim 2, wherein

 If the antenna is a uniform hook line array, the antenna configuration information sent by the receiving base station specifically includes: the number of antennas, the strong correlation antenna, the antenna is a hook line array, the pilot antenna and the non-pilot antenna, and the non-polarized antenna ;

 If the antenna is a uniformly rounded array, the antenna configuration information sent by the receiving base station specifically includes: the number of antennas, the strong correlation antenna, the antenna is a uniform circular array, the pilot antenna and the non-pilot antenna, and the non-polarized antenna;

 If the antenna is a polarized antenna, the antenna configuration information sent by the receiving base station specifically includes: an antenna number, a strong correlation antenna, a polarized antenna, and an antenna group consisting of a horizontal antenna and a vertical antenna in the polarized antenna Line array, pilot antenna and non-pilot antenna;

 If the antenna is an access point AP, the antenna configuration information sent by the receiving base station includes: an AP number, an antenna number, a strong correlation antenna, a uniform linear array or a uniform circular array, a pilot antenna, and a non-pilot antenna. And whether it is a polarized antenna.

 4. The method according to claim 3, wherein

If the antenna is a uniform hook line matrix, the channel is fading according to the channel fading value of the pilot antenna The channel fading value of the frequency antenna specifically includes: calculating a channel fading value of the non-pilot antenna by linear interpolation or proportional interpolation of the channel fading value of the pilot antenna;

 And obtaining, by the channel fading value of the pilot antenna, a channel fading value of the non-pilot antenna according to the channel fading value of the pilot antenna, specifically: calculating, by linear interpolation, a channel fading value of the pilot antenna a channel fading value of the non-pilot antenna;

 If the antenna is a polarized antenna, the obtaining a channel fading value of the non-pilot antenna according to the channel fading value of the pilot antenna specifically includes: calculating, by linear interpolation, a channel fading value of the pilot antenna Channel fading value of the non-pilot antenna;

 If the antenna is an access point AP, obtaining the channel fading value of the non-pilot antenna according to the channel fading value of the pilot antenna specifically includes: linearly interpolating or proportional interpolation of the channel fading value of the pilot antenna A channel fading value of the non-pilot antenna is calculated.

 The method according to any one of claims 1 to 4, wherein obtaining the channel quality information according to the channel fading value of the pilot antenna and the channel fading value of the non-pilot antenna comprises:

 Obtaining a channel matrix according to a channel fading value of the pilot antenna and a channel fading value of the non-pilot antenna;

 Obtaining a signal to noise ratio of the receiving end according to the channel matrix;

 Channel quality information is obtained according to the signal to noise ratio of the receiving end.

 The method according to claim 1, wherein the obtaining the channel quality information according to the antenna configuration information specifically includes:

 If the antenna is an independent antenna, the antenna configuration information sent by the receiving base station specifically includes: an antenna number, and an independent antenna.

 7. The method according to claim 6, wherein the channel fading value of the pilot antenna is obtained according to the antenna configuration information:

 a signal to noise ratio obtained from a channel fading value of the pilot antenna;

 The corrected signal to noise ratio is obtained according to the signal to noise ratio plus the gain value;

Channel quality information is obtained based on the modified signal to noise ratio.

8. A method for receiving channel quality information, characterized by:

 Sending antenna configuration information to the user equipment;

 Receiving channel quality information sent by the user equipment, where the channel quality information is obtained by using antenna configuration information.

 9. The method according to claim 8, wherein the obtaining the channel quality information by using the antenna configuration information specifically includes:

 Obtaining a channel fading value of the pilot antenna according to the antenna configuration information;

 Obtaining a channel fading value of the non-pilot antenna according to a channel fading value of the pilot antenna; obtaining channel quality information according to a channel fading value of the pilot antenna and a channel fading value of the non-pilot antenna.

 10. The method according to claim 9, wherein

 If the antenna is a uniform hook line array, the antenna configuration information sent by the receiving base station specifically includes: the number of antennas, the strong correlation antenna, the antenna is a uniform line array, the pilot antenna and the non-pilot antenna, and the non-polarized antenna;

 If the antenna is a uniformly rounded array, the antenna configuration information sent by the receiving base station specifically includes: the number of antennas, the strong correlation antenna, the antenna is a uniform circular array, the pilot antenna and the non-pilot antenna, and the non-polarized antenna;

 If the antenna is a polarized antenna, the antenna configuration information sent by the receiving base station specifically includes: an antenna number, a strong correlation antenna, a polarized antenna, and an antenna group consisting of a horizontal antenna and a vertical antenna in the polarized antenna Line array, pilot antenna and non-pilot antenna;

 If the antenna is an access point AP, the antenna configuration information sent by the receiving base station includes: an AP number, an antenna number, a strong correlation antenna, a uniform linear array or a uniform circular array, a pilot antenna, and a non-pilot antenna. And whether it is a polarized antenna.

 11. A device for transmitting channel quality information, characterized in that:

 a receiving unit, configured to receive antenna configuration information sent by the base station;

An acquiring unit, configured to obtain channel quality information according to the antenna configuration information; And a sending unit, configured to send channel quality information to the base station.

 The device according to claim 10, wherein the acquiring unit comprises: a first acquiring subunit, configured to obtain a channel fading value of the pilot antenna according to the antenna configuration information;

 a second acquiring subunit, configured to obtain a channel fading value of the non-pilot antenna according to a channel fading value of the pilot antenna;

 And a third acquiring subunit, configured to obtain channel quality information according to a channel fading value of the pilot antenna and a channel fading value of the non-pilot antenna.

 13. The apparatus according to claim 11, wherein

 If the antenna is a uniform hook line array, the antenna configuration information specifically includes: the number of antennas, the strong correlation antenna, the antenna is a hook line array, the pilot antenna and the non-pilot antenna, and the non-polarized antenna; The antenna is a circular array, and the antenna configuration information includes: the number of antennas, the strong correlation antenna, the antenna is a circular array, the pilot antenna and the non-pilot antenna, and the non-polarized antenna; if the antenna is a pole The antenna configuration information includes: the number of antennas, the strong correlation antenna, the polarized antenna, and the antenna group consisting of one horizontal antenna and the vertical antenna in the polarized antenna is a uniform linear array, a pilot antenna, and a non-pilot antenna. ;

 If the antenna is an access point AP, the antenna configuration information sent by the receiving base station includes: an AP number, an antenna number, a strong correlation antenna, a uniform linear array or a uniform circular array, a pilot antenna, and a non-pilot antenna. And whether it is a polarized antenna.

 14. A receiving device for channel quality information, characterized in that:

 a sending unit, configured to send antenna configuration information to the user equipment;

 The receiving device is configured to receive channel quality information sent by the user equipment, where the channel quality information is obtained according to the antenna configuration information.

 A method for transmitting a reference signal received power RSRP value, which is characterized in that: receiving antenna configuration information sent by a base station;

Obtaining a reference signal received power RSRP value according to the antenna configuration information; The RSRP value is sent to the base station.

 The method according to claim 15, wherein the obtaining the reference signal received power RSRP value according to the antenna configuration information specifically includes:

 Obtaining, according to the antenna configuration information, a channel fading value of the pilot antenna; obtaining an RSPR value according to a channel fading value of the pilot antenna; or

 Obtaining a channel fading value of the pilot antenna according to the antenna configuration information; obtaining a channel fading value of the non-pilot antenna according to a channel fading value of the pilot antenna; and a channel fading value and a non-pilot antenna according to the pilot antenna The channel fading value obtains the RSPR value.

 The method according to claim 16, wherein the obtaining the RSPR value according to the method comprises: combining each pilot antenna RSPR value or an RSPR value of each pilot antenna and a non-pilot antenna into an equivalent RSRP value; Or

 Combine the RSPR values of each antenna port into an equivalent RSRP value; or

 The RSPR values of each antenna port are combined into an equivalent RSRP value multiplied by a weighting factor; or the RSPR values of each antenna port are combined into an equivalent RSRP value multiplied by a weighting factor, and an offset value is added.

18. The method according to claim 17, wherein said combining into an equivalent RSRP value comprises: a maximum ratio combining mode,

or

Selective merge mode, ie equivalent = max("R^^RSR^ ₊ , or

 N M

RSRP = _i RSRP _ii RSRP _j + γ

 Linear merge method, ie equivalent ^ , or

RSRP = [f] RSRP, f] (RSRP, ) ^{β N+} ^ + γ

The geometric combination method, that is, the equivalent -1; or the method of transmitting diversity or antenna selection, which corresponds to the linear combination mode "takes a specific value; Wherein, ", ^ is a weighting coefficient, where RSRPi is the RSRP value corresponding to the ith pilot antenna, and RSRPj is the RSRP value corresponding to the jth non-pilot antenna.

 19. The method according to any one of claims 15 to 18, wherein

 If the antenna is a uniform hook line array, the antenna configuration information sent by the receiving base station specifically includes: the number of antennas, the strong correlation antenna, the antenna is a uniform line array, the pilot antenna and the non-pilot antenna, and the non-polarized antenna;

 If the antenna is a uniformly rounded array, the antenna configuration information sent by the receiving base station specifically includes: the number of antennas, the strong correlation antenna, the antenna is a uniform circular array, the pilot antenna and the non-pilot antenna, and the non-polarized antenna;

 If the antenna is a polarized antenna, the antenna configuration information sent by the receiving base station specifically includes: an antenna number, a strong correlation antenna, a polarized antenna, and an antenna group consisting of a horizontal antenna and a vertical antenna in the polarized antenna Line array, pilot antenna and non-pilot antenna;

 If the antenna is an access point AP, the antenna configuration information sent by the receiving base station includes: an AP number, an antenna number, a strong correlation antenna, a uniform linear array or a uniform circular array, a pilot antenna, and a non-pilot antenna. And whether it is a polarized antenna.

 20. The method according to claim 19, wherein

 Obtaining, according to the channel fading value of the pilot antenna, the channel fading value of the non-pilot antenna comprises: linearly interpolating or proportionally interpolating the channel fading value of the pilot antenna. Calculating a channel fading value of the non-pilot antenna;

 And obtaining, by the channel fading value of the pilot antenna, a channel fading value of the non-pilot antenna according to the channel fading value of the pilot antenna, specifically: calculating, by linear interpolation, a channel fading value of the pilot antenna a channel fading value of the non-pilot antenna;

 If the antenna is a polarized antenna, the obtaining a channel fading value of the non-pilot antenna according to the channel fading value of the pilot antenna specifically includes: calculating, by linear interpolation, a channel fading value of the pilot antenna Channel fading value of the non-pilot antenna;

If the antenna is an access point AP, the obtaining a non-guide according to a channel fading value of the pilot antenna The channel fading value of the frequency antenna specifically includes: calculating a channel fading value of the non-pilot antenna by linear interpolation or proportional interpolation of the channel fading value of the pilot antenna.

 A method for transmitting a reference signal received power RSRP value, characterized in that:

 Receiving an indication sent by the base station;

 Obtaining a reference signal received power RSRP value according to the indication;

 The RSRP value is sent to the base station.

 22. The method of claim 21, the indication comprising obtaining an RSRP value using all antenna ports, or obtaining a RSRP value using a partial antenna port.

 23. A transmitting device for receiving a RSRP value of a reference signal, characterized in that:

 a receiving unit, configured to receive antenna configuration information sent by the base station;

 And an obtaining unit, configured to obtain a reference signal received power RSRP value according to the antenna configuration information, and a sending unit, configured to send the RSRP value to the base station.