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Method and device for updating time division duplex uplink and downlink configuration

A time division duplex, configuration update technology, applied in digital transmission systems, electrical components, error prevention, etc., can solve the problem of inconsistent understanding of TDDUL/DL configuration

Active Publication Date: 2017-07-14
DATANG MOBILE COMM EQUIP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0026] Similarly, in method 2, after receiving the RRC signaling and successfully completing the analysis, the terminal can obtain the updated TDD UL / DL configuration information and take effect, but the base station does not know when the terminal is correct before receiving the RRC reconfiguration complete message. The RRC message is parsed and applied, so the understanding of the TDD UL / DL configuration by the base station and the terminal may be inconsistent during this period, such as Figure 4 shown

Method used

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  • Method and device for updating time division duplex uplink and downlink configuration
  • Method and device for updating time division duplex uplink and downlink configuration
  • Method and device for updating time division duplex uplink and downlink configuration

Examples

Experimental program
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Embodiment 1

[0112] In this step, method 1 is adopted for TDD UL / DL configuration change notification, as follows:

[0113] Step 1: The base station determines that the TDD UL / DL configuration needs to be changed;

[0114] The base station decides to change the TDD UL / DL configuration according to the amount of uplink and downlink service data in the cell and determines the serial number of the updated TDD UL / DL configuration.

[0115] Step 2: The base station notifies the UE in the cell of the system information update and the number of the updated TDD UL / DL configuration;

[0116] Once the base station determines to change the TDD UL / DL configuration of a certain cell, it needs to notify the terminal system information in the cell of the change through a paging message within the BCCH modification period n and send the updated UL / DL configuration within the BCCH modification period n+1. System information, the updated system information carries the number of the updated TDD UL / DL config...

Embodiment 2

[0125] In this embodiment, the TDD UL / DL configuration change notification adopts Method 1, which is as follows:

[0126] Step 1: The base station determines that the TDD UL / DL configuration needs to be changed;

[0127] The base station decides to change the TDD UL / DL configuration according to the amount of uplink and downlink service data in the cell and determines the serial number of the changed TDD UL / DL configuration.

[0128] Step 2: The base station notifies the UE in the cell of the system information update and the number of the updated TDD UL / DL configuration;

[0129] Once the base station determines that it is necessary to change the TDD UL / DL configuration of a certain cell, it needs to notify the terminals in the cell of the change of system information through a paging message within the BCCH modification period n and send the updated UL / DL configuration within the BCCH modification period n+1. System information. The updated system information carries the nu...

Embodiment 3

[0135] In this embodiment, the TDD UL / DL configuration change is notified using the second method, which is as follows:

[0136]Step 1: The base station determines that the TDD UL / DL configuration needs to be changed;

[0137] The base station decides to change the TDD UL / DL configuration according to the amount of uplink and downlink service data in the cell and determines the serial number of the updated TDD UL / DL configuration.

[0138] Step 2: The base station notifies the UE in the cell of the system information update and the number of the updated TDD UL / DL configuration;

[0139] Once the base station determines that the TDD UL / DL configuration of a certain cell needs to be changed, it needs to notify the terminals in the cell that support the dynamic change of TDD UL / DL configuration through a paging message within the BCCH modification period n that the TDD uplink and downlink configuration of the cell has changed , in addition to carrying the TDD UL / DL configuration...

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Abstract

The embodiment of the present invention discloses a time division duplex TDD uplink and downlink configuration updating method and device, which relate to the field of wireless communication and are used to avoid the problem of inconsistency of base station and terminal understanding of TDD uplink and downlink configuration, so as to ensure system transmission performance. In the present invention, the base station and the terminal determine the effective time of the updated TDD uplink and downlink configuration according to the same effective time determination method, and start to use the updated TDD uplink and downlink configuration for data transmission when the effective time arrives. Before the time arrives, the TDD uplink and downlink configuration before updating is used for data transmission, thus avoiding the problem of inconsistent understanding of the TDD uplink and downlink configuration between the base station and the terminal, and ensuring the transmission performance of the system.

Description

technical field [0001] The invention relates to the field of wireless communication, in particular to a method and device for updating time division duplex uplink and downlink configurations. Background technique [0002] The Long Term Evolution (LTE) Time Division Duplex (TDD) system is shown in Figure 1. A wireless frame is 10 ms long and includes 10 subframes in total, including special subframes and regular subframes. Each subframe The frame is 1ms. The special subframe is divided into 3 time slots: Downlink Pilot Slot (DwPTS), Guard Period (Guard Period, GP) and Uplink Pilot Slot (UpPTS). Regular subframes are further divided into uplink subframes and downlink subframes, which are used to transmit uplink / downlink control signaling and service data, etc. respectively. [0003] The LTE TDD system defines seven TDD uplink and downlink (UL / DL) configurations, as shown in Table 1 below. The common features of these seven TDD UL / DL configurations are as follows: In one rad...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W72/04H04L1/00
CPCH04L1/1854H04L1/1864H04L1/1887H04L1/1896H04W72/20
Inventor 赵亚利许芳丽潘学明彦楠付喆
Owner DATANG MOBILE COMM EQUIP CO LTD
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