Public signal transmission method and device in hybrid beamforming technology
A common signal and mixed beam technology, applied in the transmission system, radio transmission system, space transmit diversity and other directions, can solve the problems of public signal coverage impact, to improve effective coverage, combat path loss, improve effective coverage and The effect of robustness
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Embodiment 1
[0054] figure 1 It is an exemplary flow chart of a common signal transmission method in the hybrid beamforming technology in Embodiment 1 of the present application. Such as figure 1 As shown, the method is applied to the base station side, and may specifically include the following processing procedures:
[0055] Step 101, the base station acquires an analog public signal to be sent.
[0056] In this step, the analog common signal to be sent is a signal obtained after analog-to-digital conversion of the digital common signal.
[0057] figure 2 It is a schematic diagram of an exemplary principle of processing a common signal in a hybrid beamforming technology in Embodiment 1 of the present application. Such as figure 2 As shown, the signal Sa is an analog public signal to be sent.
[0058] Step 102, for different radio frequency chains (RFchain), select different codewords from the analog beamforming codebook as analog beamforming vectors.
[0059] In this step, diffe...
Embodiment 2
[0077] Figure 5 It is an exemplary flowchart of a common signal transmission method in a hybrid beamforming technology in Embodiment 2 of the present application. Such as Figure 5 As shown, the method is applied to the base station side, and may specifically include the following processing procedures:
[0078] Step 501, divide the codewords in the analog beamforming codebook into at least two codeword groups; the number of codewords included in each codeword group is at least one.
[0079] Still taking the case in which the system described in Embodiment 1 is configured with 4 radio frequency chains and the codebook includes 8 codewords as an example, the 8 codewords can be divided into two groups. For example, put a(0), a(π) and Divided into a codeword group, for example, denoted as the first codeword group; and Divided into another codeword group, for example, denoted as the second codeword group.
[0080] Of course, in practical applications, the 8 codewords c...
Embodiment 3
[0102] In this third embodiment, on the basis of any one of the above-mentioned first and second embodiments, processing of digital beamforming for common signals may be added.
[0103] Figure 9a and Figure 9b It is an exemplary flow chart of a common signal transmission method in a hybrid beamforming technology in Embodiment 3 of the present application. This method is applied to the base station side, such as Figure 9a and Figure 9b As shown, the method may include the following processes:
[0104] Step 901, acquire a digital common signal used to generate the analog common signal to be sent.
[0105] Figure 10a and Figure 10b It is a schematic diagram of an exemplary principle of processing a common signal in a hybrid beamforming technology in Embodiment 3 of the present application. Such as Figure 10a and Figure 10b As shown, the signal Sd is the digital common signal, and Sa is the corresponding analog common signal.
[0106] Step 902, for each radio fre...
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