A Method for Transmitting TDD Frames on Symmetric Spectrum

A spectrum, pair technology, applied in the field of TDD frame transmission on symmetric spectrum, can solve problems such as infeasibility

Active Publication Date: 2017-08-25
CHENGDU TD TECH LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Based on the above situation, if the uplink spectrum and downlink spectrum are respectively set as two TDD carriers for use, it is basically not feasible in practice

Method used

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  • A Method for Transmitting TDD Frames on Symmetric Spectrum
  • A Method for Transmitting TDD Frames on Symmetric Spectrum
  • A Method for Transmitting TDD Frames on Symmetric Spectrum

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Embodiment Construction

[0019] In order to make the purpose, technical means and advantages of the present application clearer, the present application will be further described in detail below in conjunction with the accompanying drawings.

[0020] figure 1 It is a flowchart of a method for TDD frames on a symmetrical frequency spectrum in this application. Such as figure 1 As shown, the method includes:

[0021] Step 101, determine the TDD uplink and downlink configuration of the current cell, and determine the uplink subframe and downlink subframe in the TDD frame.

[0022] Wherein, the TDD uplink and downlink configuration can be determined according to system signaling, and corresponding to each different TDD uplink and downlink configuration, there is a determined allocation of uplink subframes and downlink subframes.

[0023] In step 102, the uplink subframe of the TDD frame is transmitted on the uplink spectrum in a pair of symmetric spectrums, and the downlink subframe of the TDD frame is...

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Abstract

The present application discloses a method for transmitting a TDD frame on a symmetrical frequency spectrum, including: determining the TDD uplink and downlink configuration of the current cell, and determining the uplink subframe and downlink subframe in the TDD frame; Symmetrical frequency spectrum, the uplink subframe of the TDD frame is transmitted on the uplink frequency spectrum in the pair of symmetric frequency spectrums, and the downlink subframe of the TDD frame is transmitted on the downlink frequency spectrum in the pair of symmetric frequency spectrums. In this way, the transmission of the TDD frame is realized on the FDD spectrum, so that the baseband processing of the TDD frame is consistent when it is transmitted in the TDD and FDD spectrum; at the same time, when the TDD frame is transmitted, the transmission direction of the FDD spectrum does not change, and it will not be different from the Other FDD systems conflict.

Description

technical field [0001] This application relates to the transmission technology of time division duplex (TDD) frames, in particular to a method for transmitting TDD frames on a symmetrical frequency spectrum. Background technique [0002] Two frame structures are specified in the LTE protocol: frame format 1 and frame format 2, respectively for FDD-LTE and TDD-LTE. Among them, the schematic diagram of frame format 1 is as follows figure 1 As shown, the schematic diagram of frame format 2 is as follows figure 2 shown. [0003] Since the FDD / TDD system defines two frame formats respectively, and at the same time, in the current frequency planning, the FDD spectrum is only used to transmit FDD frames, and the TDD spectrum is only used to transmit TDD frames. Therefore, for FDD / TDD, The baseband processing is different, corresponding to two frame structures respectively, which increases the complexity of the system. [0004] The most direct way to use the TDD frame structure...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W72/04H04B7/26
Inventor 徐绍君江森熊兵佟学俭杨春兰
Owner CHENGDU TD TECH LTD
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