Duplex communication method based on frequency domain dispatching

Abstract

The invention discloses a duplex communication method based on frequency domain dispatching. The duplex communication method disclosed by the invention comprises the following steps: a duplex mode in each frequency range is selected from the following three modes: (1) transmitting signals to a piece of terminal equipment by a communication device; (2) receiving signals from the terminal equipment by the communication device; and (3) the duplex mode with the same frequency and same time; a system frequency-domain dispatches the duplex mode which dynamically distributes each sub-frequency range and distributed terminal equipments which work at the same frequency and same time according to transmission requests, service quality ranks, sizes of data blocks, channel quality and the like of each equipment acquired by a communication device, an interference level and an interference cancellation capability of the communication device. According to the invention, a dynamic frequency domain dispatching method is used for determining the duplex mode of each sub-frequency range, the sub-frequency ranges can be distributed flexibly; and information like the interference cancellation capability is used for dynamically dispatching, so that the use ratio of resources is improved, and interferences of a transmitting antenna of the communication device to a receiving antenna of the communication device are effectively reduced.

Description

technical field [0001] The invention belongs to the field of wireless communication, and in particular relates to a duplex communication method based on frequency domain scheduling. Background technique [0002] A basic task of a wireless communication system is to establish and maintain a communication link between sending and receiving nodes to realize two-way transmission of communication data. [0003] Traditional frequency-division duplex communication systems use different frequencies for sending and receiving, so the sending and receiving channels are frequency-division orthogonal. Generally, within a frequency band, the channel is further divided into several sub-frequency bands, and each sub-frequency band is either a transmitting frequency band or a receiving frequency band. [0004] An example of frequency allocation for a conventional frequency division duplex communication system is figure 1 shown. In this example, the channel is divided into 6 sub-bands, of ...

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Problems solved by technology

[0005] In recent years, some researchers have proposed the concept of simultaneous transmission and reception at the same frequency. This method uses interference cancellation to achieve reception and transmission on all channels of the same frequency and time. However, the interference between transceivers is an important factor affecting the performance of the system.

In the case of ideal interference elimination, the capacity of the same-frequency simultaneous transmitting and receiving system is greater than that of the traditional frequency division duplex communication system; however, when the interference cannot be completely eliminated, the comparison between the two capacities depends on the ability of interference elimination, and interference elimination The ability is related to many factors and may change dynamically in the actual system

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