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

Arq control in an hsdpa communications system

An automatic retransmission request, downlink technology, applied in the direction of link quality-based transmission modification, transmission system, digital transmission system, etc., can solve the problem of data packet sequence disorder and so on

Inactive Publication Date: 2006-11-22
NEC CORP
View PDF0 Cites 6 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this case, data packets that are successfully received after the previous corrupted data packets are also ignored by the UE because the data packets are out of order

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
  • Arq control in an hsdpa communications system
  • Arq control in an hsdpa communications system
  • Arq control in an hsdpa communications system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0038] now refer to figure 1 , which generally shows a 7-layer Open Systems Interconnection model designed to support most types of communication systems. Each layer does not specify exact protocols or services, but rather defines a functional model that needs to be implemented. Model 100 includes physical layer 102 , data link layer 104 , network layer 106 , transport layer 108 , session layer 110 , presentation layer 112 , and application layer 114 .

[0039] The physical layer 102 conditions digital data from higher layers so that it can be reliably transmitted over a mobile radio channel. In the transmit direction, the physical layer 102 performs functions such as channel coding, interleaving, scrambling, spreading and modulation. In the receive direction, these functions are reversed so that the transmitted data is recovered at the receiver.

[0040] The data link layer 104 is responsible for converting data from the physical layer into frames. The data link layer 104...

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

A method of Automatic Repeat reQuest (ARQ) control in a High Speed Downlink Packet Access (HSDPA) communication system. The method includes transmitting (300) control information from a first station to a second station; commencing receipt (312) of the control information at the second station; checking (502) whether the control information was received with error; and if so, generating (604) a negative acknowledgment (NACK) message for transmission to the first station. The control information error checking and acknowledgment message generating is performed at the second station by carrying out processing operations within radio interface layer 1 (UE layer 1).

Description

technical field [0001] The present invention relates generally to error control of data transmitted between stations in a communication system, and more particularly to Automatic Repeat reQuest in a High Speed ​​Downlink Packet Access (HSDPA) communication system. , ARQ) control. Background technique [0002] HSDPA is one of the key features of the third generation (3G) wireless communication standard for Wideband Code Division Multiple Access (W-CDMA). W-CDMA is proposed to support multimedia services in the downlink direction. As the name implies, HSDPA brings high-speed data delivery to 3G stations, ensuring that users requiring effective multimedia capabilities can benefit from data rates previously unavailable due to constraints in the radio access network. HSDPA is intended to provide very high data rates of up to 14.4 Mbps over a 5 MHz bandwidth in the downlink direction. It is also intended to guarantee high-quality applications such as video streaming, interactiv...

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): H04L1/16H04L1/00H04L1/12H04L1/18H04W28/04
CPCH04L1/0003H04L1/0009H04L1/0026H04L1/1692H04L1/1812H04L2001/125
Inventor 彭·恩古亚
Owner NEC CORP
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