Supercharge Your Innovation With Domain-Expert AI Agents!

Hybrid automatic repeat-based communication method and communication system under constant scheduling

A technology that mixes automatic retransmission and communication methods, and is applied in transmission systems, digital transmission systems, and error prevention/detection using return channels. Empty, low-complexity effects

Inactive Publication Date: 2010-03-17
海宁市盐官工业投资有限公司
View PDF0 Cites 5 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In 802.16e, for the retransmission under constant scheduling, the asynchronous HARQ method is adopted, so that each retransmission packet needs information such as resource indication, modulation and coding mode, etc. If the retransmission data packets increase, the overhead will increase

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
  • Hybrid automatic repeat-based communication method and communication system under constant scheduling
  • Hybrid automatic repeat-based communication method and communication system under constant scheduling
  • Hybrid automatic repeat-based communication method and communication system under constant scheduling

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0054] According to an embodiment of the present invention, a downlink constant scheduling synchronous HARQ communication method is provided. This application example is downlink transmission, the sending end is the base station, and the receiving end is the terminal.

[0055] In step 110, the system configures a constant scheduling period. In each constant scheduling period, a constant scheduling region r0 is configured, and three retransmission regions r1, r2, and r3 are configured corresponding to the constant scheduling region.

[0056] Such as figure 2 As shown, the constant scheduling takes a superframe as a cycle, and a superframe is 4 wireless frames; the area represented by r0 is the constant allocation area, that is, the constant scheduling area; r1 is the first retransmission area corresponding to the r0 area; r2 is the second retransmission area corresponding to the r1 area; r3 is the third retransmission area corresponding to the r2 area.

[0057] Among them, r...

Embodiment 2

[0087] Figure 5 It is a schematic diagram of a synchronous HARQ method for uplink constant scheduling.

[0088] The principle is the same as figure 2 The shown downlink constant scheduling synchronous HARQ method.

[0089] Under constant uplink scheduling, the terminal sends data to the base station, and the base station feeds back NACK / ACK information, and also establishes a feedback index Bitmap based on the NACK / ACK to perform resource mapping of data sub-bursts in the retransmission area, and feedback the data sub-bursts through the retransmission mapping information The index Bitmap is sent to the terminal, and the terminal retransmits the data sub-burst at the corresponding position according to the feedback index Bitmap and the constant area sub-burst information. After the terminal retransmits the data sub-burst, when receiving the data sub-burst, the base station receives the retransmitted data at a corresponding position according to the feedback index Bitmap and...

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 invention provides a hybrid automatic repeat-based communication method under constant scheduling, which comprises the steps of: setting a constant scheduling area in a constant scheduling period; transmitting new data of the constant scheduling in the constant scheduling area; setting a plurality of repeat areas corresponding to the constant scheduling area; and retransmitting repeat data inthe repeat areas, wherein the constant scheduling area and the plurality of repeat areas are positioned at the same position in different radio frames. The method adopts a synchronous HARQ mode through the sub-burst in the constant scheduling area to solve the problem of large cost caused by adopting an asynchronous HARQ.

Description

technical field [0001] The present invention relates to the technical field of mobile communication, in particular, relates to the hybrid automatic retransmission (Hybrid Automatic Retransmission Request , referred to as HARQ) communication method and system. Background technique [0002] Hybrid automatic retransmission HARQ is a technology that combines automatic retransmission (Automatic Retransmission Request, ARQ for short) and forward error correction coding (Forward Error Correction, FEC for short). [0003] Synchronous HARQ means that the retransmission of a HARQ process occurs at a predetermined time, and no additional signaling overhead is required to indicate the location of time-frequency resources occupied by retransmitted data packets, so it has the advantage of saving overhead. After receiving the data packet from the sending end, the receiving end sends NACK information to the sending end after the decoding fails, and the sending end sends retransmission data...

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 Applications(China)
IPC IPC(8): H04L1/18H04L1/16H04L1/00
Inventor 王军虎孙长印方惠英曲红云
Owner 海宁市盐官工业投资有限公司
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

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

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com