Unlock instant, AI-driven research and patent intelligence for your innovation.

A downlink data transmission method and device thereof

A technology of downlink data and transmission method, which is applied in the field of downlink data transmission method and its equipment, can solve the problem of control channel compatibility, reduce the problem that UE cannot effectively read the downlink control channel, etc., and achieve the goal of reducing terminal bandwidth and reducing impact Effect

Active Publication Date: 2016-09-21
DATANG MOBILE COMM EQUIP CO LTD
View PDF3 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the problem caused by reducing the bandwidth of the UE terminal is that due to the full bandwidth mapping of the downlink control channel, the UE cannot effectively read the downlink control channel, and the uplink cannot perform PUCCH (Physical Uplink ControlCHannel, Physical Uplink Control Channel) on the full uplink bandwidth. ) feedback, so it brings the compatibility problem of the control channel and the coexistence problem with the traditional terminal

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A downlink data transmission method and device thereof
  • A downlink data transmission method and device thereof
  • A downlink data transmission method and device thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0056] In order to more clearly illustrate the implementation principles and technical effects of the embodiments of the present invention, the relevant provisions of the existing standard PRACH (Physical Random Access Channel, Physical Random Access Channel) resource location are firstly described below.

[0057] In the LTE system, one PRACH channel occupies 6 PRB resources. When using Format 0-3, the subcarrier spacing is 1.25KHz, one PRACH channel contains 864 subcarriers (1.08MHz), and the preamble (preamble) sequence with a length of 839 is mapped to the middle 839 subcarriers. When using Format4 (only for TDD (Time Division Duplexing, time division duplex) system), the subcarrier spacing is 7.5KHz, a PRACH channel contains 144 subcarriers (1.08MHz), and the preamble sequence with a length of 139 is mapped to the middle on the 139 subcarriers. The time-frequency resources occupied by the PRACH are determined by the eNB (evolved Node B, ie base station), and notified to t...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

Disclosed are a downlink data transmission method and a device therefor. The method is applied to an LTE system. At least one downlink data transmission frequency band is configured in a data domain of a downlink system working frequency band of the LTE system, and the bandwidth of each downlink data transmission frequency band is less than the bandwidth occupied by a control channel area of the LTE system. The method comprises: a network device sending control signaling to a terminal through a downlink control channel in an LTE system control area, so as to schedule the terminal to perform downlink data transmission in the downlink data transmission frequency band; the network device transmitting data in the downlink data transmission frequency band for the terminal in the downlink data transmission frequency band. By using the present invention, the data transmission bandwidth of the terminal can be reduced, and cost reduction of the terminal and compatibility of the control channel are both achieved.

Description

technical field [0001] The present invention relates to the field of wireless communication, in particular to a downlink data transmission method and equipment thereof. Background technique [0002] The Internet of Things technology is in the ascendant, and it is necessary to support the MTC (Machine Type Communications, Machine Type Communications) function in the third generation mobile communication system and its Long Term Evolution (LTE) system. As a new type of communication concept, MTC aims to organically combine various types of communication technologies, such as: machine-to-machine communication, machine control communication, human-computer interaction communication, and mobile Internet communication, so as to promote social production and lifestyle. development of. [0003] The current mobile communication network is designed for communication between people, such as: the determination of network capacity and so on. [0004] Some of the currently recognized ch...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): H04W72/04H04W72/12
CPCH04W72/04
Inventor 徐伟杰贾民丽邢艳萍
Owner DATANG MOBILE COMM EQUIP CO LTD