US 2013/0272170 A1 · ADAPTIVE UL-DL TDD CONFIGURATIONS IN A HETEROGNEOUS NETWORK

Abstract

Technology for adapting uplink-downlink (UL-DL) time-division duplexing (TDD) subframe configurations in a heterogeneous network (HetNet) is disclosed. One method can include a reference enhanced Node B (eNB) determining a preferred adaptive UL-DL configuration. The eNB can receive node configuration information for at least one neighboring node. The eNB can reconfigure an adaptive UL-DL configuration for at least one of the reference eNB and the at least one neighboring node based on the node configuration information and sounding reference signal (SRS) subframe scheduling of the reference eNB and the at least one neighboring eNB.

Claims29

Dependent claims

A method for adapting uplink-downlink (UL-DL) time-division duplexing (TDD) subframe configurations in a heterogeneous network (HetNet), comprising:

determining a preferred adaptive UL-DL configuration;
receiving, at a reference enhanced Node B (eNB), node configuration information for at least one neighboring node;
and
reconfiguring an adaptive UL-DL configuration for at least one of the reference eNB and the at least one neighboring node based on the node configuration information and sounding reference signal (SRS) subframe scheduling of the reference eNB and the at least one neighboring node.

1 more element

At least one non-transitory machine readable storage medium comprising a plurality of instructions adapted to be executed to implement a method for adapting uplink-downlink (UL-DL) time-division duplexing (TDD) subframe configurations in a heterogeneous network (HetNet), comprising:

grouping a plurality of nodes into interference management (IM) clusters when a pathloss of node-to-node channels is above a specified threshold;
generating a preferred adaptive UL-DL configuration for each of the IM clusters, wherein at least one preferred adaptive UL-DL configuration includes a flexible subframe (FlexSF) configured to switch between an uplink (UL) subframe and a downlink (DL) subframe;
reconfiguring the adaptive UL-DL configuration for each of the IM clusters to provide backward compatibility based on the node configuration information and sounding reference signal (SRS) subframe scheduling;
and
transmitting the adaptive UL-DL reconfiguration to at least one node in a selected IM cluster via a backhaul link via a wired connection, a wireless connection, or an optical fiber connection.

2 more elements

Dependencies are inferred from the claim text.

Facts

Application

13/734,355Filed 4 Jan 2013

Priority

13 Apr 2012

Published

17 Oct 2013

Term ends

Not estimatedThe source records don’t support an estimate.

Classification31 codes

H04W 74/0808
Non-scheduled access, e.g. ALOHA: using carrier sensing, e.g. carrier sense multiple access [CSMA]
H04L 5/0001
Arrangements affording multiple use of the transmission path: arrangements for dividing the transmission path
H04L 5/0023
Three-dimensional division: time-frequency-space
H04L 5/0037
Arrangements for allocating sub-channels of the transmission path: inter-user or inter-terminal allocation

Adaptive ul-dl tdd configurations in a heterogneous network

Life of this patent

Adaptive ul-dl tdd configurations in a heterogneous network

Life of this patent

Abstract

Claims29