Configuration method and device of channel measurement and channel information feedback method and device
A channel measurement and configuration method technology, applied in the field of communication, can solve the problem that the base station cannot adopt a variety of different port virtualization, etc.
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Embodiment 1
[0122] Configuration of embodiment 1K sets of measurement pilots:
[0123] The base station configures K sets of channel measurement pilots (CSI-RS) to the terminal; the base station sends the K sets of pilots at the resource location indicated in the configuration information;
[0124] The base station can configure one or more sets of pilots to the terminal, and the configuration information can be sent through high-level signaling; including the period information of each set of pilots, sequence information, time-frequency resource position patterns in subframes, subframes Bias information, etc.; Figure 10 is a schematic diagram of candidate patterns of CSI-RS resource positions according to an embodiment of the present invention, such as Figure 10 As shown, a maximum of 5 8-port patterns #0, #1, #2, #3, #4, and #5 are supported in the same subframe. If you configure 4-port patterns, you can configure 10, and if you configure 2-port patterns, you can configure 20 indivu...
Embodiment 2
[0137] Embodiment 2 Configuration constraints of single / double PMI codebook:
[0138] LTE adopts the CSI quantization feedback method based on the codebook. The basic principle of the channel information quantization feedback based on the codebook is as follows: Assuming that the limited feedback channel capacity is Bbps / Hz, then the number of available codewords is N=2 B indivual. The eigenvector space of the channel matrix is quantized to form a codebook space The transmitting end and the receiving end jointly save or generate this codebook in real time (The transmitter and receiver are the same). To realize H for each channel, the receiver starts from the codebook space according to certain criteria Choose a codeword that best matches the channel realization H and put the codeword The sequence number i (codeword sequence number) of is fed back to the transmitter. Here, the codeword sequence number is called a precoding matrix indicator (Precoding Matrix Indicat...
Embodiment 3
[0169] Example 3: Configuration Constraints for Feedback Mode
[0170] For k=1...K, the N k port, when k takes any value, there is at least one feedback mode in the corresponding configurable feedback mode set, as shown in Table 14;
[0171] Table 14
[0172]
[0173] Note that for PUCCH, the ordinary 1-1 mode and the 1-1 submode 2 in dual codebook can be considered as the same type of mode. It can be found that although submode 2 has two PMIs, it can be equivalent because it is combined and transmitted after subsampling It is considered to be a single PMI codebook; but the normal 1-1 mode and the 1-1submode 1 of the double codebook are considered different modes; because the latter's PMI i1 and PMI i2 are transmitted in different reporting types ;
[0174] The following configurations are not allowed as shown in Table 15;
[0175] Table 15
[0176]
PUM
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