Downlink 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, which can solve problems such as UE's inability to effectively read downlink control channels and control channel compatibility issues, and achieve the effect of reducing impact and terminal bandwidth

Active Publication Date: 2013-07-24
DATANG MOBILE COMM EQUIP CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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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 Control CHannel, Physical Uplink Control CHannel) on the full uplink bandwidth. Channel) feedback, so it brings the compatibility problem of the control channel and the coexistence problem with the traditional terminal

Method used

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  • Downlink transmission method and device thereof
  • Downlink transmission method and device thereof
  • Downlink transmission method and device thereof

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Embodiment Construction

[0054] 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.

[0055] 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...

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Abstract

The invention discloses a downlink transmission method and a device thereof. The method is applied to an LTE system, at least one downlink data transmission band is configured in a data field of a downlink system working band of the downlink data transmission band, and the band width of the downlink data transmission band is smaller than the band width occupied by a control channel area of the LTE system. The method comprises the steps of enabling a network device to control the downlink control channel in the control area through the LTE system to sending a control signaling to a terminal, and scheduling the terminal to transmit downlink data in the downlink data transmission band; and enabling the network device to carry out data transmission on the terminal on the downlink data transmission band. The downlink transmission method can reduce the data transmission band width of the terminal and consider compactness of the control channel while reducing cost of the terminal.

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

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Application Information

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Patent Type & Authority Applications(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
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