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A time division duplex dynamic frame structure configuration method, determination method and corresponding device

A time-division duplex and structure configuration technology, applied in the field of communication, can solve the problem of not being able to obtain the actual transmission frame structure

Inactive Publication Date: 2018-04-27
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] 2. Robustness of dynamic DCI: Another problem with dynamic DCI is robustness. If the UE cannot correctly demodulate the PDCCH, it cannot obtain the actual transmission frame structure

Method used

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  • A time division duplex dynamic frame structure configuration method, determination method and corresponding device
  • A time division duplex dynamic frame structure configuration method, determination method and corresponding device
  • A time division duplex dynamic frame structure configuration method, determination method and corresponding device

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Experimental program
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Embodiment 1

[0125] This embodiment introduces a TDD dynamic frame structure configuration method. The method in this embodiment is mainly aimed at the base station side, such as figure 1 shown, including the following steps:

[0126] Step 101, select a frame structure, and determine the subframe that will arrive at the user equipment the earliest among a group of downlink subframes corresponding to the same uplink feedback in the frame structure, and the uplink feedback is used to indicate the corresponding downlink subframe group data Received correctly or not;

[0127] A set of downlink subframes described in this paper is a downlink subframe group, and a downlink subframe group is mapped to a One or more downlink subframes for uplink feedback.

[0128] In a preferred embodiment, the method of selecting a frame structure includes: selecting the frame structure with the largest number of downlink subframes in the frame structure hopping candidate set in the current system information b...

Embodiment 2

[0183] This embodiment introduces a method for determining a TDD dynamic frame structure. The method in this embodiment is mainly aimed at the UE side, such as image 3 shown, including the following steps:

[0184] Step 301, select a frame structure, and determine the subframe that will arrive at the user equipment the earliest among a group of downlink subframes corresponding to the same uplink feedback in the frame structure, and the uplink feedback is used to indicate the corresponding downlink subframe group data Received correctly or not;

[0185] For the method for selecting the frame structure on the UE side and the method for selecting subframes in the frame structure, refer to the method on the base station side in Embodiment 1, wherein:

[0186] After the frame structure is determined by method 1, if there are multiple DCIs in subframes that satisfy condition 1 (that is, the frame structure has multiple uplink subframes that can send uplink feedback), then obtain t...

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Abstract

The invention discloses a time-division duplex dynamic frame structure configuration method, a determination method and a corresponding device, which improve robustness and have no restriction on scheduling. The dynamic frame structure configuration method includes: selecting a frame structure, and determining the subframe that will arrive at the user equipment the earliest among a group of downlink subframes corresponding to the same uplink feedback in the frame structure, and the uplink feedback is used to indicate Corresponding to whether the downlink subframe group data is received correctly or not; set the downlink allocation index (DAI) value in the downlink control information (DCI) in the subframe, and the DAI value is used for dynamic frame structure indication. The dynamic frame structure configuration device includes a frame structure determination module, a subframe determination module and a configuration module. Using the method provided in this application, the DAI bits in the DCI in a specific subframe are used to dynamically configure the frame structure, which does not impose any restrictions on scheduling and provides robustness to the system.

Description

technical field [0001] The present invention relates to the communication field, in particular to a time division duplex (Time Division Duplex, TDD for short) dynamic frame structure configuration method, determination method and corresponding device. Background technique [0002] In LTE (Long Term Evolution, long-term evolution) and LTE-A (LTE-advance, LTE evolution) standards, a TDD system frame is composed of ten subframes. 3GPP supports a total of 7 frame structures, as shown in Table 1. Among them, D indicates that the subframe is used for downlink transmission, U indicates that the subframe is used for uplink transmission, S indicates a special subframe and contains three special time slots, that is, the downlink guide Downlink Pilot Time Slot (DwPTS for short, used for downlink transmission), Guard Period (GP for short), and Uplink Pilot Time Slot (Uplink Pilot Time Slot, UpPTS for short, used for uplink transmission). [0003] Table 1: TDD system uplink and downlink...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L5/00H04L1/00
Inventor 张晓博
Owner ZTE CORP