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Method, apparatus and system for shortening transmission delay of time division duplex

A technology of transmission delay and time division duplexing, which is applied in the field of communication, can solve the problem of large transmission delay of subframes, and achieve the effect of reducing transmission delay and avoiding interference

Active Publication Date: 2017-08-15
ALCATEL LUCENT SHANGHAI BELL CO LTD
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Problems solved by technology

Therefore, based on the uplink and downlink configuration of TD-LTE, in the existing scheme of reducing the transmission delay by shortening the TTI, in some configuration modes, the transmission delay of many subframes is still relatively large

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  • Method, apparatus and system for shortening transmission delay of time division duplex
  • Method, apparatus and system for shortening transmission delay of time division duplex
  • Method, apparatus and system for shortening transmission delay of time division duplex

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Embodiment Construction

[0030] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0031] figure 1 A method according to the invention for reducing the transmission delay of time division duplexing is shown. The method includes steps S101 and S102 performed by the base station, and steps S201 and S202 performed by the user equipment.

[0032] Wherein, the base stations according to the present invention include but are not limited to macro base stations, micro base stations, pico base stations, and home base stations applicable to LTE networks. The user equipment includes an electronic device capable of directly or indirectly communicating with a base station in a wireless manner, including but not limited to a mobile phone, a PDA, and the like.

[0033] Wherein, the base station adopts the frame structure and uplink and downlink configuration mode of the TD-LTE system stipulated in the 3GPP protocol. In addition, the base station has pe...

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Abstract

The objective of the invention is to provide a method, apparatus and system for shortening a transmission delay of time division duplex in a base station. The method according to the invention comprises the following steps: when a request of shortening the transmission delay of time division duplex from at least one user equipment of a cell is received, obtaining configuration indication information corresponding to the cell, wherein the configuration indication information comprises information used for indicating to change the data transmission direction of one or more time slots for transmitting downlink data in the original uplink and downlink configuration; and sending the configuration indication information to the at least one user equipment so as to reconfigure the uplink and downlink configuration of the at least one user equipment based on the configuration indication information.

Description

technical field [0001] The present invention relates to the field of communication technology, in particular to a method, device and system for reducing time-division duplex transmission delay. Background technique [0002] According to the regulations in the 3GPP protocol, the length of an LTE system frame is 10ms, and each frame includes 10 subframes, and the length of each subframe is 1ms. Each subframe consists of two time slots with a length of 0.5ms. In the same carrier frequency, the uplink and downlink are distinguished by time, that is, within each 10ms period, a total of 10 subframes are available for uplink and downlink, and each subframe is used for uplink or downlink. [0003] In the TD-LTE system, each uplink and downlink subframe consists of two 0.5ms time slots. The special subframe consists of three special time slots: Downlink Pilot Time Slot (DwPTS), which completes the UE downlink access function; Guard Period (GP), which is a buffer for signal transmis...

Claims

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Application Information

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IPC IPC(8): H04W72/04H04W88/02H04W88/08
CPCH04W72/0446H04W88/02H04W88/08H04W72/20H04W72/51
Inventor 陈宇
Owner ALCATEL LUCENT SHANGHAI BELL CO LTD
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