Method for transmitting and receiving channel quality information and device thereof
A technology of channel quality information and transmission method, applied in the field of channel quality information transmission, reception method and its device, capable of solving the problems of not accurately reflecting the downlink channel quality of data channels, etc.
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no. 1 example
[0036] figure 1 A schematic flowchart of a channel quality information transmission method according to the first embodiment of the present invention is shown, which will be described in detail below in conjunction with other drawings and specific embodiments.
[0037] The structure schematic diagram of the embodiment of the antenna of the present invention is a uniform linear array, as figure 2 As shown, where the antenna is a uniform linear array structure, in this embodiment, the antenna configuration information received in step 101 first includes: using uniform linear interpolation to obtain the channel quality information in step 102 .
[0038] Assuming a flat fading channel (conforming to the channel characteristics on OFDM subcarriers) according to formula (1),
[0039] h j =(h i × d 2 + h k × d 1 ) / (d 1 +d 2 )(1)
[0040] Wherein, i, j, and k are any three of the M antennas, wherein two of i, j, and k are transmitting pilot antennas, and one is a non-transmi...
example 1
[0120] Example 1: If the base station has 8 physical antennas, with Figure 5 As an example, the transmission method of the reference signal received power RSRP value is described in detail, assuming that 1, 2, 3, and 4 are combined as antenna port 0; 5, 6, 7, and 8 are combined as antenna port 1. The UE can measure RSRP0 and RSRP1 of antenna port 0 and antenna port 1. Here 1, 2, 3, and 4 are the same polarization; 5, 6, 7, and 8 can be another polarization, and of course they can be the same as 1, 2, 3, and 4.
[0121] Set the values of RSRP0 and RSRP1 for antenna port 0 and antenna port 1.
[0122] The equivalent RSRP is obtained according to (1) to (3) combining methods, and reported to the base station after certain processing.
example 2
[0123] Example 2: If the base station has 8 physical antennas, with Figure 5 As an example, assume that physical antenna 1 is used as antenna port 0; physical antenna 5 is used as antenna port 1. The above two ports send CRS; the rest of the physical antennas do not send CRS. Physical antenna 1 and physical antenna 5 can have the same or different polarization modes, and UE can measure RSRP0 and RSRP1 of antenna port 0 and antenna port 1. The RSRP0 and RSRP1 values of antenna port 0 and antenna port 1 are combined to obtain equivalent RSRP according to a certain combination method effective0 . Because the rest of the physical antennas do not send CRS, they can be considered independent. According to the signaling notification of the base station, it can be determined whether an offset can be added to the combined RSRP. For example, the above 8 antennas have been estimated Get the RSRP of the two antennas, and add 10*log3=4.7dB on this basis.
[0124] RSRP effective = αR...
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