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

HARQ feedback realization method, and uplink subframe allocation method and device

A technology of subframe allocation and allocation method, applied in the field of communication, can solve the problem of no downlink data in TDD system

Active Publication Date: 2013-10-23
DATANG MOBILE COMM EQUIP CO LTD
View PDF2 Cites 8 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0016] However, there are currently few LTE systems that support cross-system carrier aggregation, and there is no HARQ feedback solution for downlink data in TDD and FDD systems when carrier aggregation is performed.

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
  • HARQ feedback realization method, and uplink subframe allocation method and device
  • HARQ feedback realization method, and uplink subframe allocation method and device
  • HARQ feedback realization method, and uplink subframe allocation method and device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0059] For the application scenario of cross-system carrier aggregation, in the embodiment of the present invention, a new HARQ feedback scheme is designed. Through the HARQ feedback scheme provided in the embodiment of the present invention, the subframe on the FDD downlink carrier (that is, the FDD downlink ACK / NACK information corresponding to the subframe) is evenly allocated to the uplink subframes used to carry the HARQ feedback information in the TDD carrier, so that the resource allocation of the system is more balanced.

[0060] Preferred embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0061] In the embodiment of the present invention, preferably, the TDD carrier is aggregated with the FDD downlink carrier as the main carrier, that is, when the PDSCH HARQ feedback is performed on the FDD downlink carrier, the corresponding ACK / NACK information can only be sent on the main carrier (that is, the TDD ...

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 method for implementing HARQ feedback, and a method and device for allocating an uplink subframe. The method is: determining a TDD uplink / downlink reference configuration used for FDD PDSCH HARQ feedback; and allocating, according to the number of uplink subframes indicated by the TDD uplink / downlink reference configuration in a radio frame, an FDD downlink subframe corresponding to ACK / NACK information borne by an uplink subframe indicated by the TDD uplink / downlink reference configuration to the uplink subframe, so that numbers of FDD downlink subframes corresponding to ACK / NACK information borne by the uplink subframes indicated by the TDD uplink / downlink reference configuration are approximately equal. In this way, ACK / NACK information corresponding to downlink data can be timely and accurately fed back, so as to perform accurate data retransmission, thereby effectively ensuring the system performance.

Description

technical field [0001] The present invention relates to the communication field, in particular to a method for realizing HARQ feedback, an uplink subframe allocation method and a device. Background technique [0002] Currently, LTE (Long Term Evolution; Long Term Evolution) supports three duplex methods, namely FDD (Frequency Division Duplex, frequency division duplex), H-FDD (Half FDD, half frequency division duplex) and TDD (Time Division Duplex) Duplex, Time Division Duplex). [0003] Among them, FDD means that the uplink transmission and downlink transmission are performed on different carrier frequency bands, allowing the base station and the terminal to simultaneously receive and transmit signals; TDD means that the uplink transmission and downlink transmission are performed on the same carrier frequency band, allowing the base station and the terminal Signal sending / signal receiving, or signal receiving / signal sending are respectively performed in different time peri...

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): H04L1/18
CPCH04L1/18H04L1/1861H04L5/14
Inventor 司倩倩沈祖康林亚男高雪娟
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