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A technology of baseband signals and configuration information, applied in the field of communication, can solve problems such as high-level signaling indicating that the frequency offset cannot be satisfied
Active Publication Date: 2019-10-08
VIVO MOBILE COMM CO LTD
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[0005] The embodiment of the present invention provides a method and device for generating an OFDM baseband signal, which is used to solve the problem that the frequency offset indicated by the existing high-level signaling cannot satisfy the subcarrier 0 alignment of the commen RB
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Embodiment 1
[0068] figure 2 A schematic flow diagram of a method for generating an OFDM baseband signal provided by an embodiment of the present invention is shown, as shown in figure 2 As shown, the signal generation method may include:
[0069] S201. The transmitting end device acquires configuration information of a first subcarrier interval, a frequency of a first carrier, and first indication information.
[0070] The sending end device in the embodiment of the present invention can be figure 1 A sending end device in the shown communication system, for example, a base station.
[0071] Wherein, the above-mentioned first subcarrier spacing is the subcarrier spacing corresponding to the first resource set transmitted on the first carrier, and the first resource set includes at least one Common RB. The above first indication information is used to indicate the target frequency offset of the OFDM baseband signal corresponding to the Common RB included in the first resource set. Th...
example 1
[0094] Example 1: If the frequency of the first carrier belongs to FR1, the configuration information of the first subcarrier spacing in the numerology of the first resource set μ={0,1,2}, that is, the subcarrier spacing is 15 / 30 / 60kHZ, when the first frequency offset k0 of the high-level configuration is {-6, 0, 6}, substitute k0 into formula 6 to calculate Calculated The sets of are respectively {-6, 0, 6}, {-3, 0, 3}, {-1.5, 0, 1.5}.
example 2
[0095] Example 2: If the frequency of the first carrier belongs to FR2, the configuration information of the first subcarrier spacing in the numerology of the first resource set μ={2,3,4}, that is, the subcarrier spacing is 60 / 120 / 240kHZ, and the upper layer When the configured first frequency offset k0 is {-6, 0, 6}, substitute k0 into formula 7 to calculate Calculated The sets of are respectively {-6, 0, 6}, {-3, 0, 3}, {-1.5, 0, 1.5}.
[0096] 2. The second possible implementation method:
[0097] Optionally, the above-mentioned first indication information is used to indicate an offset state corresponding to the target frequency offset. There are mainly two ways to achieve this.
[0098] 1), the first implementation method
[0099] In the embodiment of the present invention, the aforementioned target offset includes a frequency offset value and an offset state, and the frequency offset value is a specific offset, which is an absolute value of the target offset and is...
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Abstract
The embodiment of the invention provides an OFDM (Orthogonal Frequency Division Multiplexing) basebandsignal generation method and device, relates to the field of communication, and is used for solving the problem that the frequency offset indicated by the existing high-level signaling cannot meet the subcarrier 0 alignment of a Common RB (Route Beam). The method comprises the following steps: acquiring configuration information of a first subcarrier interval, the frequency of a first carrier and first indication information, wherein the first subcarrier interval is a subcarrier interval corresponding to a first resource set transmitted on a first carrier, the first indication information is used for indicating a target frequency offset of an OFDM basebandsignal corresponding to a commonresource block contained in the first resource set, and the target frequency offset is a frequency offset between a central frequency point of a first carrier and central frequency points of frequency bandwidths of all the common resource blocks in the first resource set; determining a target frequency offset according to the configuration information, the frequency of the first carrier and the first indication information; and generating an OFDM basebandsignal according to the target frequency offset and the data symbol carried on the common resource block.
Description
technical field [0001] The present invention relates to the field of communication technologies, in particular to a method and device for generating an Orthogonal Frequency Division Multiplexing (OFDM) baseband signal. Background technique [0002] Currently, in the 5G NR system, the subcarrier spacing SCS (subcarrier spacing) of the common resource block (Common RB) carried on the carrier can be set to 15*(2^n)kHz, where n can be a negative number. That is to say, in the NR system, the SCS can be set to: 3.75kHz, 7.5kHz, 15kHz, 30kHz, 60kHz, 120kHz, 240kHz, etc. Since these SCSs do not completely exhibit an integer multiple relationship, therefore, subcarrier 0 of the Common RB transmitted by different SCSs on the same carrier is likely to have a certain frequency offset. However, in the existing OFDM baseband signal generation process, it is necessary to ensure the alignment of subcarrier 0 in all Common RBs transmitted in different SCSs on the same carrier. [0003] In ...
Claims
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