US 11,109,385 B2Granted

Method and apparatus for measuring downlink interference in OFDM mobile communication system

AssigneeSamsung Electronics Co., Ltd.

InventorsYounsun Kim, Kiil Kim, Hyojin Lee

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Abstract

A method of a base station in a wireless communication system, a method of a terminal, a base station, and a terminal are provided. The method of the base station includes transmitting configuration information on measuring a channel state, wherein the configuration information includes first information on a first resource for a channel measurement and second information on a second resource for an interference measurement; transmitting a channel state information reference signal (CSI-RS) associated with the first resource; and receiving channel state information based on the first resource and the second resource, and wherein the second resource is a resource for muting data transmission, and wherein the second resource is one of resources for muting data transmission which are configured to a user equipment (UE).

Claims16

Dependent claims

A method of a base station in a wireless communication system, the method comprising:

transmitting first configuration information for a channel measurement and second configuration information for an interference measurement, wherein the first configuration information indicates a first non-zero power channel state information reference signal (NZP CSI-RS) resource for the channel measurement and the second configuration information indicates a second NZP CSI-RS resource for the interference measurement;
transmitting a first NZP CSI-RS associated with the first NZP CSI-RS resource;
transmitting a second NZP CSI-RS associated with the second NZP CSI-RS resource;
and
receiving channel state information associated with a channel based on the first configuration information and an interference based on the second configuration information,
wherein the first configuration information indicates the first NZP CSI-RS resource among a plurality of configured NZP CSI-RS resources, and the second configuration information indicates the second NZP CSI-RS resource among the plurality of configured NZP CSI-RS resources,
wherein the interference associated with the second NZP CSI-RS resource corresponds to the second NZP CSI-RS, and
wherein the interference is identified considering a received power of the second NZP CSI-RS associated with the second NZP CSI-RS resource.

5 more elements

A method of a terminal in a wireless communication system, the method comprising:

receiving first configuration information for a channel measurement and second configuration information for an interference measurement, wherein the first configuration information indicates a first non-zero power channel state information reference signal (NZP CSI-RS) resource for the channel measurement and the second configuration information indicates a second NZP CSI-RS resource for the interference measurement;
receiving a first NZP CSI-RS associated with the first NZP CSI-RS resource;
receiving a second NZP CSI-RS associated with the second NZP CSI-RS resource;
obtaining channel state information based on a measured channel associated with the first configuration information and a measured interference associated with the second configuration information;
and
transmitting the obtained channel state information,
wherein the first configuration information indicates the first NZP CSI-RS resource among a plurality of configured NZP CSI-RS resources and the second configuration information indicates the second NZP CSI-RS resource among the plurality of configured NZP CSI-RS resources,
wherein the interference associated with the second NZP CSI-RS resource corresponds to the second NZP CSI-RS, and
wherein the interference is identified considering a received power of the second NZP CSI-RS associated with the second NZP CSI-RS resource.

6 more elements

A base station in a wireless communication system, the base station comprising:

a transceiver;
and
a controller coupled with the transceiver and configured to:
transmit first configuration information for a channel measurement and second configuration information for an interference measurement, wherein the first configuration information indicates a first non-zero power channel state information reference signal (NZP CSI-RS) resource for the channel measurement and the second configuration information indicates a second NZP CSI-RS resource for the interference measurement,
transmit a first NZP CSI-RS associated with the first NZP CSI-RS resource,
transmit a second NZP CSI-RS associated with the second NZP CSI-RS resource, and
receive channel state information associated with a channel based on the first configuration information and an interference based on the second configuration information,
wherein the first configuration information indicates the first NZP CSI-RS resource among a plurality of configured NZP CSI-RS resources and the second configuration information indicates the second NZP CSI-RS resource among the plurality of configured NZP CSI-RS resources,
wherein the interference associated with the second NZP CSI-RS resource corresponds to the second NZP CSI-RS, and
wherein the interference is identified considering a received power of the second NZP CSI-RS associated with the second NZP CSI-RS resource.

7 more elements

A terminal in a wireless communication system, the terminal comprising:

a transceiver;
and
a controller coupled with the transceiver and configured to:
receive first configuration information for a channel measurement and second configuration information for an interference measurement, wherein the first configuration information indicates a first non-zero power channel state information reference signal (NZP CSI-RS) resource for the channel measurement and the second configuration information indicates a second NZP CSI-RS resource for the interference measurement,
receive a first NZP CSI-RS associated with the first NZP CSI-RS resource,
receive a second NZP CSI-RS associated with the second NZP CSI-RS resource,
obtain channel state information based on a measured channel associated with the first configuration information and a measured interference associated with the second configuration information, and
transmit the obtained channel state information,
wherein the first configuration information indicates the first NZP CSI-RS resource among a plurality of configured NZP CSI-RS resources and the second configuration information indicates the second NZP CSI-RS resource among the plurality of configured NZP CSI-RS resources,
wherein the interference associated with the second NZP CSI-RS resource corresponds to the second NZP CSI-RS, and
wherein the interference is identified considering a received power of the second NZP CSI-RS associated with the second NZP CSI-RS resource.

8 more elements

Dependencies are inferred from the claim text.

Facts

Application: 16/017,496Filed 25 Jun 2018 · continuation
Priority: KR 10-2011-006145424 Jun 2011
Published: US 2018/0310318 A125 Oct 2018
Granted: 31 Aug 2021
Term ends: Not estimatedThe source records don’t support an estimate.

Classification17 codes

H04W 72/541
Based on quality criteria: using the level of interference
H04B 17/318
Measuring or estimating channel quality parameters: received signal strength
H04B 17/336
Measuring or estimating channel quality parameters: signal-to-interference ratio [SIR] or carrier-to-interference ratio [CIR]
H04J 11/0026
Interference mitigation or co-ordination: of multi-user interference

Family

Application13/532,115Parent of this continuation · filed 25 Jun 2012
US 2018/0310318 A1Pre-grant publication · published 25 Oct 2018
US 10,009,903 B2Parent of this continuation
US 2012/0327800 A1Published application
US 11,109,385 B2This patent

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