Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Downlink transmission method and equipment

A technology of transmission method and equipment, applied in the direction of transmission system, digital transmission system, electrical components, etc.

Active Publication Date: 2011-10-19
DATANG MOBILE COMM EQUIP CO LTD
View PDF4 Cites 26 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0021] The embodiment of the present invention provides a downlink transmission method and equipment for solving the problem of how to ensure the performance of PHICH reception

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
  • Downlink transmission method and equipment
  • Downlink transmission method and equipment
  • Downlink transmission method and equipment

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0032]In order to ensure the receiving performance of the PHICH, the embodiment of the present invention provides a downlink transmission method. In this method, the base station only transmits the PHICH when the current remaining power on the resources currently used to transmit the PHICH can meet the transmission power required for sending the PHICH to the terminal. Allocate PHICH transmission resources for the terminal and use the allocated PHICH transmission resources to send PHICH to the terminal after sending uplink scheduling signaling for PUSCH transmission to the terminal, otherwise, give up the current scheduling of PUSCH transmission for the terminal.

[0033] see figure 1 , the downlink transmission method provided by the embodiment of the present invention includes the following steps:

[0034] Step 10: After the base station allocates the physical uplink shared channel (PUSCH) transmission resource for the terminal, it determines the transmission power required 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

The embodiment of the invention discloses a downlink transmission method and downlink transmission equipment, relating to the technical field of wireless communication, and aiming at solving the problem how to ensure the receiving performance of a physical HARQ (hybrid automatic repeat request) indicator channel (PHICH). In the invention, a base station determines transmission power needed by transmitting the PHICH to a terminal according to the downlink channel condition of the terminal after distributing transmission resource of a PUSCH (physical uplink shared channel) for the terminal; the base station determines whether the requirement of the transmission power can be met according to the current surplus power for transmitting the resources of the PHICH, if so, the PHICH transmission resource is distributed to the terminal, and after an uplink scheduling signaling transmitted by the PUSCH is transmitted to the terminal, the PHICH is transmitted to the terminal according to the PHICH transmission resource used and distributed by the transmission power, and if not, the scheduling to the current PUSCH transmission of the terminal is abandoned. By adopting the invention, the PHICH receiving performance can be ensured.

Description

technical field [0001] The present invention relates to the field of wireless communication, in particular to a downlink transmission method and equipment. Background technique [0002] In the Long Term Evolution (LTE) system, for data transmission on the Physical Uplink Shared Channel (PUSCH), the base station needs to send an acknowledgment / negative acknowledgment (ACK / NACK) feedback in the corresponding downlink subframe information, and the feedback information is carried on a physical hybrid-ARQ indicator channel (PHICH). There is a certain timing relationship between the downlink ACK / NACK feedback and the corresponding PUSCH transmission, so for the PUSCH transmission on the same subframe, the corresponding ACK / NACK feedback is also performed on the same downlink subframe. For the PUSCH transmission of subframe n, its corresponding PHICH is usually in subframe n+k PHICH Transmission: For Frequency Division Duplex (FDD) systems, k PHICH The value of is 4; for Time Di...

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
IPC IPC(8): H04W72/04H04W72/12
CPCH04W52/346H04L1/1692H04W52/325H04W72/12
Inventor 朱志球
Owner DATANG MOBILE COMM EQUIP CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com