Mixed duplex realization method based on separated service and control as well as data transmission method

Abstract

The invention discloses a mixed duplex realization method and a mixed duplex realization system based on separated service and control. The method comprises the following steps: bearing uplink / downlink service data by using unpaired spectrums for supporting uplink and downlink transmission in a time division duplex mode; and bearing control data required by transmitting the uplink and downlink service data by using paired spectrums, wherein the paired spectrums comprise a spectrum used for uplink transmission and a spectrum used for downlink transmission. The invention also discloses a data transmission method. By the invention, the channel reciprocity of TDD of the service data and the flexibility of uplink / downlink service are maintained, the low feedback time delay of FDD of the transmission of the control data is realized, and the TDD system and the FDD system realize further synergism.

Description

technical field [0001] The present invention relates to the field of wireless communication, in particular, to a hybrid duplex implementation method and system in which services and control are separated, and a data transmission method based on the hybrid duplex mode in which services and control are separated. Background technique [0002] The duplex mode is one of the characteristics that distinguish traditional wireless systems, and it is also a major factor that determines the basic capabilities of the wireless system. Many performances of the system are closely related to the duplex mode adopted, for example, (1) The flexibility of the system to use the spectrum; (2) The complexity of the terminal and the base station; (3) The ability to use channel information; (4) The multi-network coordination ability; (5) The inter-network interworking ability; (6) The ability to support the moving speed of the terminal, etc. [0003] There are mainly three basic duplex modes used i...

AI Technical Summary

Problems solved by technology

The main disadvantages of the TDD method are: (1) when the coverage area is too large, the spectrum utilization efficiency is lower than that of the FDD method; (2) the support for high-speed mobility is not as good as that of the FDD method

The main disadvantages of FDD are: (1) paired spectrum is required, which brings difficulties in spectrum planning; (2) there are difficulties in the use of channel reciprocity characteristics, which makes the design of smart antennas more difficult; (3) uplink and downlink spectrum It is not flexible enough to support asymmetric services

[0013] The inventors of the present application discovered that the above-mentioned related technical solutions have at least the following problems: the number or type of spectrum used by the duplex mode is limited to two, and the application of the duplex mode is positioned to be used within a system , Designing a hybrid duplex mode under this limitation limits the degree of freedom of duplex design, resulting in various hybrid duplex modes designed under this limitation, or the limitation of the TDD frame structure on the feedback delay It still exists, or the limitations of FDD in the ability to support asymmetric services still exist, or the compatibility with existing systems is poor and the complexity is high

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