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Controllable CSI-RS density

A technology of density, network nodes, applied in the field of telecommunications, to achieve the effect of great flexibility

Active Publication Date: 2019-07-23
TELEFON AB LM ERICSSON (PUBL)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0068] Several techniques and devices described herein address the above issues and provide greater flexibility in the design and use of CSI-RS for NR

Method used

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  • Controllable CSI-RS density
  • Controllable CSI-RS density
  • Controllable CSI-RS density

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Embodiment Construction

[0102] The following description presents various embodiments of the disclosed subject matter. These embodiments are presented as teaching examples and are not to be construed literally as limiting the scope of the disclosed subject matter. For example, certain details of the described embodiments may be modified, omitted, or expanded without departing from the scope of the described subject matter.

[0103] Radio Node: As used herein, a "radio node" is a radio access node or wireless device.

[0104] Control Node: As used herein, a "control node" is a wireless device or radio access node for managing, controlling or configuring another node.

[0105] Radio Access Node: As used herein, a "radio access node" is any node in a radio access network of a cellular communication network that operates to transmit and / or receive signals wirelessly. Some examples of radio access nodes include, but are not limited to, base stations (e.g., enhanced or evolved Node Bs (eNBs) in Third Gen...

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Abstract

Methods and apparatus for configuring, in a network node (110) of a wireless communication network, a reference signal resource used to perform channel-state information, CSI, measurements with one ormore wireless devices. In an example method, a reference signal resource is aggregated in one or more of a frequency and a time domain, and a density characteristic of the aggregated reference signalresource that is to be transmitted to the one or more wireless devices (105) is adjusted.

Description

technical field [0001] The disclosed subject matter relates generally to telecommunications, and more particularly to controlling channel state information reference signal (CSI-RS) density in channels of next generation mobile wireless communication systems. Background technique [0002] The next generation of mobile wireless communication systems (5G or NR) will support a diverse set of use cases and a diverse set of deployment scenarios. The latter includes deployments at both low frequencies (hundreds of MHz) (similar to LTE today) as well as very high frequencies (mm-wave tens of GHz). At high frequencies, the propagation characteristics make it challenging to achieve good coverage. One solution to the coverage problem is to employ high-gain beamforming (usually in analog) in order to achieve a satisfactory link budget. Beamforming will also be used at lower frequencies (usually digital beamforming) and is expected to be similar in nature to the already standardized 3...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L5/00
CPCH04L1/0009H04L1/1614H04L5/0044H04L5/0048H04L5/0094H04L5/00H04L5/0051H04B7/0417H04B7/0469H04B7/0617H04B7/0626H04L1/0026H04W72/0446
Inventor S.格兰特M.弗伦纳
Owner TELEFON AB LM ERICSSON (PUBL)