Change rate matching mode in the presence of channel state information reference signaling

A technology of rate matching and matching mode, which is applied in the directions of pilot signal allocation, transmission path separation device, transmission path sub-channel allocation, etc., and can solve problems such as poor decoding

Active Publication Date: 2016-08-31
NOKIA TECH OY
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This condition is said to be generally worse than decoding with erasure

Method used

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  • Change rate matching mode in the presence of channel state information reference signaling
  • Change rate matching mode in the presence of channel state information reference signaling
  • Change rate matching mode in the presence of channel state information reference signaling

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Embodiment Construction

[0085] Regarding the background discussion above, it is noted that for Rel-8 / 9 UEs (terminals) that do not know the existence of CSI-RS, PDSCH RE mapping cannot avoid the CSI-RS position of the serving cell. Therefore, in case there is a PDSCH transmission to a Rel-8 / 9 terminal in a subframe containing a CSI-RS, the CSI-RS RE will puncture (cover) the Rel-8 / 9 PDSCH RE without any Rel - 8 / 9 The terminal knows the source of the additional PDSCH interference experienced by the UE decoder.

[0086] The eNB may take actions in order to mitigate this interference. For example, the eNB may avoid scheduling Rel-8 / 9 UEs in subframes containing CSI-RS, or it may adjust (down-regulate) the MCS level for affected UEs in order to overcome the interference due to CSI-RS. That is, the eNB may enable Rel-8 / 9 UEs to operate with more robust MCS in order to mitigate to some extent the additional interference UEs experience due to the presence of CSI-RS.

[0087] Furthermore, and relating to t...

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Abstract

In one aspect of the present invention, an exemplary embodiment thereof provides a method comprising: performing user equipment and network access according to a first rate matching mode before confirming that the network access node has correctly acquired the capabilities of the user equipment The operation of the node, and changing the rate matching mode to the second rate matching mode only after the user equipment confirms that the network access node has correctly acquired the capability of the user equipment. In one embodiment, the first rate matching mode includes puncturing the downlink shared channel transmission with a set of resource elements, which may be at least one of reference symbols and muted resource elements, and the second rate matching mode includes surrounding as resource elements Those resource elements that are members of the set of elements rate match the downlink shared channel. Apparatus and computer-readable storage media storing program code to operate in accordance with the methods are also described.

Description

technical field [0001] Exemplary and non-limiting embodiments of the present invention relate generally to wireless communication systems, methods, devices and computer programs, and more particularly to downlink communication to user equipment such as Rel-10 (LTE-Advanced) user equipment Link reference signal and data transmission. Background technique [0002] This section is intended to provide a background or context to the invention that is recited in the claims. The description herein may include principles that can be explored, but not necessarily principles that have been previously conceived, implemented or described. 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 prior art by inclusion in this section. [0003] Below, the following abbreviations that may appear in the specification and / or drawings are defined as: [0004] 3GPP Third Gener...

Claims

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Application Information

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Patent Type & AuthorityPatents(China)
IPC IPC(8): H04W28/22
CPCH04L5/001H04L5/0048H04L5/1446H04W28/22H04W72/51H04W72/23H04L5/0023H04L5/0053H04L5/0091H04W8/22H04L1/0013H04L1/0026H04W36/06
InventorM·赤梅尔T·罗曼
OwnerNOKIA TECH OY