Method for determining downlink multi-access system transmission mode, transmitting end device and receiving end device

Abstract

The invention relates to a method for determining a downlink multi-access system multi-service transmission mode, a transmitting end device and a receiving end device. A multi-frame structure is adopted in information transmission, and a time domain data frame in the multi-frame structure has flexible and variable length. The adopted time frequency slicing technology comprises the following stepsof: performing basic time frequency unit division on time and sub-carrier resource, wherein the basic time frequency unit consists of one or more sub-carriers positioned in the same time domain data frame and occupies fixed signal bandwidth; performing time frequency sub-channel distribution by using the basic time frequency unit; determining a transmission mode according to system available resources, channel conditions and multi-service requirements; obtaining the transmitting end device based on the determination of the transmission mode; and obtaining the receiving end device corresponding to a certain time frequency sub-channel according to the determination of the transmission mode and the transmitting end device. The method supports multiple service transmission requirements, and can flexibly dispatch system resources and flexibly configure system parameters according to the externally obtained system available resource information, channel conditions and specific service requirements.

Description

technical field [0001] The invention belongs to the technical field of digital information transmission, and in particular relates to a downlink multiple access system for realizing multi-service transmission in a broadband wireless mobile system or a broadband terrestrial broadcasting system, in particular to a method for determining a multi-service transmission mode of a downlink multiple access system, a transmitter, Receiver device. Background technique [0002] In digital communication systems, the common goal of broadband wireless mobile transmission and broadband terrestrial broadcast transmission is to make full use of available system resources (including bandwidth, power and complexity, etc.) in complex broadband wireless mobile and terrestrial broadcast transmission environments, according to Actual channel conditions to meet the growing multi-service requirements. [0003] One of its core issues is: how to deal with the challenges of harsh transmission environme...

AI Technical Summary

Problems solved by technology

Therefore, the difficulty is that it is more and more difficult to open up and plan higher bandwidth spectrum resources

It is a good solution to obtain a radio frequency channel by combining multiple spectrum segments, but it requires corresponding physical layer technical support

[0010] 2) Flexible configuration of system parameters

Therefore, the difficulty is that the formulation of broadband wireless mobile and terrestrial broadcasting standards must adapt to a variety of available spectrum resources (such as bandwidth) and time resources, and be able to flexibly configure system parameters, especially physical layer frame structure parameters, according to changes in system available resources

[0011] 3) Flexible scheduling of system resources

[0012] 4) Diversity of business requirements

Therefore, the difficulty is how to design the system framework and resource scheduling algorithm, especially the physical layer frame structure, to better support the huge differences in various business requirements

[0013] However, the existing broadband wireless mobile and terrestrial broadcasting systems either cannot support the above problems or need to be improved

Existing broadband wireless mobile and terrestrial broadcasting systems usually cannot support radio frequency channels obtained by combining spectrum segments, and the frequency band extension capability is limited; there are deficiencies in supporting a variety of available spectrum resources and flexible configuration of system parameters; usually there is a lack of channel conditions and business needs A mechanism for flexible scheduling of system resources; the physical layer frame structure of the system design cannot well support the huge differences in various business requirements, especially the services with different mobile speeds cannot be effectively supported

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