TDD configuration update method, device and system

A configuration update and reconfiguration technology, applied in the field of communication, can solve problems such as untimely update, achieve the effect of improving the utilization rate of communication resources and improving update efficiency

Active Publication Date: 2019-03-01
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] Aiming at the problem caused by the update method of TDD configuration in the related art that the update is not timely, the present invention provides a TDD configuration update method, device and system to at least solve the above problems

Method used

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  • TDD configuration update method, device and system
  • TDD configuration update method, device and system
  • TDD configuration update method, device and system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0111] In this preferred embodiment, a method for dynamically changing TDD uplink / downlink configuration is proposed, the method is as follows:

[0112] Receive TDD reconfiguration notification Media Access Control (Medium Access Control, MAC) Control Element (Control Element, CE);

[0113] If it is decoded correctly, feedback will be made at the specified position, and the above TDD reconfiguration will be used to notify the TDD configuration indicated in the MAC CE at a predetermined time.

[0114] The above TDD reconfiguration notification MAC CE includes the TDD uplink / downlink configuration number or a combination of the TDD uplink / downlink configuration number and any one or more of the following:

[0115] The length of time between receiving the TDD reconfiguration notification MAC CE and starting to use the TDD configuration indicated by the TDD reconfiguration notification MAC CE;

[0116] An identification bit used to identify whether the above-mentioned MAC CE is s...

Embodiment 2

[0152] Figure 7 It is a flowchart of a method for dynamically changing TDD uplink / downlink configuration according to Embodiment 2 of the present invention, such as Figure 7 As shown, the method includes the following steps:

[0153] Step S702: the network side (for example, eNB) sends a TDD reconfiguration notification MAC CE to the UE.

[0154] The above TDD reconfiguration notification MAC CE includes the TDD uplink / downlink configuration number or a combination of the TDD uplink / downlink configuration number and any one or more of the following: the above UE receives the above TDD reconfiguration notification MAC CE to start using the above TDD reconfiguration Notify the length of time between the TDD configurations indicated in the MAC CE; the identification bit used to identify whether the above TDD reconfiguration notification MAC CE is sent for the first time; the UL Grant used to transmit the feedback information that the above TDD reconfiguration information is co...

Embodiment 3

[0173] When the network side believes that the current TDD configuration is not suitable for the current uplink and downlink ratio of traffic, or because the adjacent cell will seriously interfere with a certain subframe, because a certain subframe will cause serious interference to the adjacent cell, etc., according to the internal The algorithm needs to adjust the TDD uplink / downlink configuration of the cell. At this time, the network side can send a TDD reconfiguration notification to some UEs in the RRC connection state to adjust the TDD uplink / downlink configuration used by these UEs, thereby improving resource utilization. Rate.

[0174] Figure 8 It is an optimal process of dynamically changing the TDD uplink / downlink configuration method according to the third embodiment of the present invention Figure 1 ,Such as Figure 8 As shown, the method includes the following steps:

[0175] Step S802: The network side sends a TDD reconfiguration notification to the UE in t...

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Abstract

The invention discloses a TDD configuration update method, apparatus and system. The TDD configuration update method comprises a step in which a terminal receives a TDD reconfiguration notification MAC CE including information indicating TDD configuration, and a step in which the terminal gives feedback at a designated position, and, in preset time duration after receiving the MAC CE, begins to use the TDD configuration indicated in the MAC CE. Through the TDD configuration update method, apparatus and system, a problem generated due to untimely update caused by an update method in TDD configuration in related technologies is solved, the update efficiency of the TDD configuration is boosted, and the communication resource utilization rate of the TDD system is improved.

Description

technical field [0001] The present invention relates to the communication field, in particular to a method, device and system for updating a Time Division Duplex (TDD for short) configuration. Background technique [0002] The current Long Term Evolution (LTE for short) technology, Worldwide Interoperability for Microwave Access (WiMAX for short), and Ultra Mobile Broadband (UMB for short) systems all have two dual Work mode: frequency division duplex (Frequency Division Duplex, referred to as FDD) mode and TDD mode. In the FDD mode, the up / down link uses different frequency bands for simultaneous data transmission, while in the TDD mode, the up / down link uses the same frequency band for time-division data transmission. [0003] In a wireless system that transmits data in units of radio frames, the up / down link of wireless air interface transmission generally transmits data in units of radio frames, where each radio frame consists of several subframes ( Subframe) compositi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W68/00
Inventor 姚君郝鹏
Owner ZTE CORP
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