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Systems and methods for configuring redundant transmissions in a wireless network

Inactive Publication Date: 2015-01-29
TELEFON AB LM ERICSSON (PUBL)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The present patent aims to improve wireless communication reliability by reducing inter-cell interference and increasing the likelihood of successful wireless transmissions. This can be achieved with minimal impact on the throughput of the interfering cell. The technical effects of the patent include improved wireless communication reliability, reduced inter-cell interference, and increased likelihood of successful wireless transmissions.

Problems solved by technology

However, heterogeneous deployments bring unique challenges that may hinder efficient network operation and degrade user experience.
The reduced transmission power typically associated with low-power nodes can result in an increased sensitivity to interference.
Additionally, the mix of large and small cells in a heterogeneous deployment can lead to other challenges, as a result of the asymmetric power capabilities of the different cells.

Method used

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  • Systems and methods for configuring redundant transmissions in a wireless network
  • Systems and methods for configuring redundant transmissions in a wireless network
  • Systems and methods for configuring redundant transmissions in a wireless network

Examples

Experimental program
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Embodiment Construction

[0020]FIG. 1A illustrates a wireless communication system 10 that provides communication service to one or more wireless communication devices 20. Wireless communication system 10 includes an access network 30 that provides wireless access to communication services within a particular geographic area and a core network 40 that provides backhaul delivery of information within wireless communication system 10. Access network 30 includes multiple radio access nodes including, in certain embodiments, multiple different types of radio access nodes (e.g., both base stations 32 and low-power nodes 34). Each radio access node serves one or more cells 50. Because of the close proximity (and potential overlap) of the cells 50, a wireless communication device 20 operating in a first cell 50 (referred to herein as a “victim cell”) may suffer interference due to transmissions occurring in a second cell 50 (referred to herein as an “aggressor cell”) that is overlapping or near to the victim cell....

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Abstract

A method for configuring communication in a wireless communication system includes obtaining, at a first network node, information indicating a plurality of candidate subframes for downlink transmissions to a wireless communication device in a first cell served by the first network node. Each candidate subframe satisfies a candidate condition that relates to transmissions in a second cell during that subframe. The method also includes determining, based on the obtained information, a number of copies of an uplink transmission a wireless communication device should transmit in consecutive uplink subframes so that a downlink transmission related to the uplink transmission will occur during one of the candidate subframes. Additionally, the method includes configuring the wireless communication device to transmit the determined number of copies of the uplink transmission in consecutive subframes.

Description

CLAIM OF PRIORITY[0001]The present application claims the benefit of PCT Patent Application Serial No. PCT / CN2012 / 072429, filed on Mar. 16, 2012, entitled Methods for Reliable Reception of HARQ Feedback Information in Heterogeneous Deployments, the disclosure of which is incorporated herein in its entirety by reference.TECHNICAL FIELD OF THE INVENTION[0002]This disclosure relates in general to wireless communication and, more particularly, to improving the reliability of wireless transmissions.BACKGROUND OF THE INVENTION[0003]The dramatic increase in the use and availability of communication services in recent years has placed significantly greater demands on wireless communication networks. Continually increasing requirements for coverage, throughput, and reliability have driven many developments in the design and configuration of wireless networks. One example of this has been the development of “heterogeneous” networks in which conventional macro-cell base stations are supplement...

Claims

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Application Information

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IPC IPC(8): H04W72/08H04W24/10H04L12/18H04W72/04
CPCH04W72/082H04L12/1877H04W24/10H04W72/042H04L1/1854H04L1/1887H04L2001/125H04L5/0055H04L1/1825H04W4/08H04W4/06H04J11/005H04L1/189H04L5/0073H04W72/27H04W72/21H04W72/23H04W72/30H04W72/541H04L5/0032H04L5/0053H04W24/02
Inventor SIOMINA, IANALI, SHAOHUAKAZMI, MUHAMMAD
Owner TELEFON AB LM ERICSSON (PUBL)