Unlock instant, AI-driven research and patent intelligence for your innovation.

Apparatus and method for initialization of reference signal scrambling

A specific reference signal, initialization technology, applied in multiplexing communication, wireless communication, orthogonal multiplexing system, etc., can solve problems such as no solution described

Active Publication Date: 2012-07-04
NOKIA TECH OY
View PDF7 Cites 28 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the documentation doesn't describe the exact solution

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
  • Apparatus and method for initialization of reference signal scrambling
  • Apparatus and method for initialization of reference signal scrambling
  • Apparatus and method for initialization of reference signal scrambling

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0036] Further to the problems summarized above, according to these teachings, there are joint processing identifiers derived from identifiers for a set of transmission points (of which a single transmission point is a special case), and such joint processing identifiers are without loss of generality Known as the CoMP ID. The CoMP ID is used to initialize the scrambling sequence of the DM-RS for the corresponding PDSCH demodulation at the UE. The identifier from which the CoMP ID is derived or determined includes at least a cell ID within the cooperation area.

[0037] The following description uses the joint transmission / joint processing variant of CoMP (i.e. JP CoMP) as an exemplary but non-limiting implementation because it is the most complex type of CoMP among the strategies considered in 3GPP TR 36.814 v1.0.0 and Potentially provides the highest gain. But in a more general way, the exemplary embodiments of the invention described in detail here provide a scrambling co...

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

A scrambling sequence is initialized using at least a cell identifier and an offset, and a physical downlink control information DCI is sent to a user equipment which indicates the offset. In more particular embodiments a user equipment-specific reference signal UE-RS is scrambled using the initialized scrambling sequence, and the scrambled UE-RS is sent to the UE for demodulating a downlink shared channel (PDSCH). In another exemplary embodiment the generated UE-RS is sent in a pilot part of a subframe transmission associated with the PDSCH and is for demodulating at least a data part of that subframe transmission. In a specific embodiment from the UE side, the UE receives the UE-RS and the DCI which indicates the offset, descrambles the UE-RS using a scrambling sequence that is initialized using a cell identifier and the indicated offset; and demodulates the PDSCH using the de-scrambled UE-RS.

Description

[0001] related application [0002] This application claims the benefit of US Provisional Patent Application Serial No. 61 / 247,239 and US Patent Application Serial No. 12 / 715353, filed September 30, 2009, which are incorporated herein by reference. technical field [0003] The exemplary and non-limiting embodiments of the present invention relate generally to wireless communication systems, methods, apparatus / apparatus and computer programs, and more particularly to the generation and use of reference signal scrambling codes. Background technique [0004] This section is intended to provide a background or context to the invention that is described in the claims. The description herein may include concepts that may be sought, but not necessarily some that have been previously thought of or pursued. Therefore, unless otherwise indicated herein, what is described in this section is not prior art to the description and claims in this application and is not admitted to be prio...

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): H04L9/08H04B7/02
CPCH04J11/0069H04W72/042H04L27/2613
Inventor M·赤梅尔陈鹏T·科伊维斯托车向光T·罗马
Owner NOKIA TECH OY