TDD transmitting and receiving method, device and system and storage medium

Abstract

The invention relates to the technical field of mobile communication, and particularly discloses a TDD (Time Division Duplexing) transmitting and receiving method, device and system and a storage medium, and the method comprises the following steps: an instruction generation step: receiving TDD protocol information, generating a control instruction based on the TDD protocol information, determining a transmitting state or a receiving state, and determining clock frequencies when the transmitting state and the receiving state work, selecting a signal of the transmitting channel or a signal of the receiving channel for processing; a channel filtering step: carrying out forming filtering processing on the signal; a multi-rate processing step: performing interpolation and filtering processing on the signal of the transmitting channel, or performing filtering and extraction processing on the signal of the receiving channel; and a carrier wave processing step: carrying out carrier wave combination on the plurality of transmitting channel signals, or carrying out carrier wave extraction to obtain a plurality of parallel receiving channel signals. By adopting the technical scheme of the invention, the resource consumption and the hardware cost can be effectively reduced.

Description

technical field [0001] The present invention relates to the technical field of mobile communication, in particular to a TDD transmitting and receiving method, device, system and storage medium. Background technique [0002] In the fifth-generation mobile communication (5G, 5th-Generation), the single-channel bandwidth FR1 requires 100MHz, and FR2 requires 400MHz. Moreover, the bandwidth of RE (resource element) is from 15KHz of LTE to NR up to 120KHz, the maximum of RB (resource block) is 273 (30KHz), and the spectrum utilization rate is as high as 90%, up to 98.28%, so the useful signal bandwidth is wider, The protective band becomes narrower. Another major feature of 5G is the application of massive-mimo technology, which has a large number of antennas / channels, making it more challenging and difficult to implement. [0003] In addition, the power consumption of 5G equipment is 2 to 3 times that of 4G equipment. Because from the perspective of FPGA / DSP implementation, i...

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Problems solved by technology

Moreover, the bandwidth of RE (resource element) ranges from 15KHz of LTE to NR up to 120KHz, the maximum of RB (resource block) is 273 (30KHz), and the spectrum utilization rate is as high as 90%, up to 98.28%, so the useful signal bandwidth is wider, The protective band becomes narrower

Another major feature of 5G is the application of massive-mimo technology, with a large number of antennas / channels, making it more challenging and difficult to implement

Because from the perspective of FPGA / DSP implementation, in the physical layer digital transmission and reception system, the data volume and data rate increase exponentially compared with LTE, the implementation complexity is high, and more hardware logic resources are required

However, the logic resources of FPGA / DSP are limited, and the resource consumption increases, which means high power consumption and high hardware cost

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