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

A technology of business data and control data, applied in the field of wireless communication, can solve the problems of high complexity, support for high-speed mobile is not as good as FDD mode, and low efficiency of spectrum use, etc., and achieve the effect of low feedback delay

Active Publication Date: 2012-09-05
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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

Method used

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

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Embodiment 1

[0058] According to an embodiment of the present invention, a hybrid duplex implementation method for separating service and control is provided.

[0059] figure 2 A flow chart of the method is shown. like figure 2 As shown, the hybrid duplex implementation method for separation of service and control according to an embodiment of the present invention includes the following processes:

[0060] Step S202, using an unpaired spectrum (for example, spectrum B) that supports uplink and downlink transmission to bear uplink / downlink service data in a time-division duplex manner;

[0061] Step S204, use paired spectrum bearer to transmit the control data required for uplink / downlink service data, wherein the paired spectrum includes a spectrum for uplink transmission (for example, spectrum U) and a spectrum for downlink transmission (spectrum D). ). In order to perform this process, it is necessary to configure the uplink control channel in the frequency spectrum used for uplin...

Embodiment 2

[0067] According to an embodiment of the present invention, a data transmission method is provided, which is based on a hybrid duplex manner in which services and control are separated.

[0068] Figure 4 The processing flow of this method is shown, such as Figure 4 As shown, the data transmission method according to the embodiment of the present invention includes the following processing:

[0069] Step S402, the terminal (which may be a mobile terminal, or a fixed or mobile wireless digital repeater) uses a paired spectrum to exchange control information with the network, where the paired spectrum includes the spectrum used for downlink transmission and the spectrum used for downlink transmission. spectrum for uplink transmission;

[0070] Step S402, the network issues the resource license data on the unpaired spectrum (spectrum B) through the spectrum used for downlink transmission; wherein, the resource license data includes resource size information, resource location ...

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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...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W4/12H04B7/26
Inventor 刁心玺
Owner ZTE CORP
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