US 8,913,535 B2 · Systems and methods for uplink feedback for high-speed downlink packet access (HSPDA)

Abstract

Systems and method for uplink feedback for multipoint transmission of high-speed downlink packet access (MP-HSDPA) that may improve downlink transmission efficiency and cell coverage. For example, Channel Quality Indicator (CQI) and/or Precoding Control Indicator (PCI) that may be calculated to accommodate the needs of coordinated dynamic network scheduling. Additionally, various frame structures may be generated for the uplink feedback that may carry multiple CQI and HARQ-ACK feedbacks from MP-HSDPA. The frame structures may also address asynchronous downlink transmissions between two cells. Moreover, HS-DPCCH power offset settings for both CQI and HARQ-ACK fields that may be modified and/or created to ensure reliable uplink feedback transmission.

Claims7

Dependent claims

A method for improving the reliability of uplink feedback in multiple point wireless transmission system by adjusting a transmission power for the uplink feedback, the method comprising:

receiving, via a wireless transmit/receive unit, transmit power control (TPC) commands from a downlink;
processing the received TPC commands on an N-slot cycle;
calculating a TPC_cmd_average based on the received TPC commands;
determining a transmit power boost when the TPC_cmd_average is greater than a threshold;
and
adjusting the transmission power for the uplink feedback based on the transmit power boost.

3 more elements

Dependencies are inferred from the claim text.

Facts

Application

13/250,062Filed 30 Sep 2011 · us provisional application

Priority

1 Oct 2010

Published

US 2012/0257568 A111 Oct 2012

Granted

16 Dec 2014

Term ends

Not estimatedThe source records don’t support an estimate.

Classification10 codes

H04W 72/21
Control channels or signalling for resource management: in the uplink direction of a wireless link, i.e. towards the network
H04L 1/1614
Details of the supervisory signal: using bitmaps
H04L 1/1812
Automatic repetition systems, e.g. Van Duuren systems: hybrid protocols; Hybrid automatic repeat request [HARQ]
H04L 1/1854
Arrangements specially adapted for the receiver end: scheduling and prioritising arrangements

Family

Application61/388,979Us provisional application · filed 1 Oct 2010

Application61/431,247Us provisional application · filed 10 Jan 2011

Application61/475,047Us provisional application · filed 13 Apr 2011

US 2012/0257568 A1Pre-grant publication · published 11 Oct 2012

US 8,913,535 B2This patent

From the US filing history. Foreign family members aren’t listed.

Systems and methods for uplink feedback for high-speed downlink packet access (HSPDA)

Life of this patent

Systems and methods for uplink feedback for high-speed downlink packet access (HSPDA)

Life of this patent

Abstract

Claims7