Source: http://www.freshpatents.com/-dt20170316ptan20170079017.php
Timestamp: 2017-03-23 04:45:32
Document Index: 621652734

Matched Legal Cases: ['Application No. 62', 'Application No. 62', 'Application No. 62', 'Application No. 62', 'Application No. 62', 'Application No. 62', 'Application No. 62', 'Application No. 62']

Transmitting Reference Signal For Multi User Mutliplexing In Multi-antenna-based Wireless Communication System And Apparatus Therefor (Lg Electronics) Toggle navigation
Method of transmitting reference signal for multi user mutliplexing in multi-antenna-based wireless communication system and apparatus therefor
Method of transmitting reference signal for multi user mutliplexing in multi-antenna-based wireless communication system and apparatus thereforThe present specification proposes a method for a user equipment to receive a DM-RS (demodulation-reference signal) from a base station in a multi-antenna-based wireless communication system. Specifically, the method includes the step of configuring a plurality of parameter sets via a higher layer signaling, receiving a downlink control signal including information on an antenna port for the DM-RS and a number of layers, and receiving the DM-RS and a downlink data signal... Antenna Base Station Communication System Demodulation Downlink Modulation Wireless Browse recent Lg Electronics Inc. patents - Seoul, KRUSPTO Applicaton #: #20170079017 Inventors: Hyungtae Kim, Jonghyun Park, Kijun Kim
The Patent Description & Claims data below is from USPTO Patent Application 20170079017, Method of transmitting reference signal for multi user mutliplexing in multi-antenna-based wireless communication system and apparatus therefor. Patent Images Full Patent (PDF) Bulk PDF Save
This application claims the benefits of the U.S. Provisional Patent Application No. 62/218,517, filed on Sep. 14, 2015, the U.S. Provisional Patent Application No. 62/219,648, filed on Sep. 16, 2015, the U.S. Provisional Patent Application No. 62/250,445, filed on Nov. 3, 2015, the U.S. Provisional Patent Application No. 62/251,681, filed on Nov. 6, 2015, the U.S. Provisional Patent Application No. 62/253,127, filed on Nov. 9, 2015, the U.S. Provisional Patent Application No. 62/254,187, filed on Nov. 12, 2015, the U.S. Provisional Patent Application No. 62/256,656, filed on Nov. 17, 2015 and the U.S. Provisional Patent Application No. 62/256,675, filed on Nov. 17, 2015 which are hereby incorporated by references as if fully set forth herein.
The present invention relates to a wireless communication system, and more particularly, to a method of transmitting a reference signal for multi user multiplexing in a multi-antenna-based wireless communication system and an apparatus therefor.
FIG. 1 illustrates a configuration of an Evolved Universal Mobile Telecommunications System (E-UMTS) network as an exemplary wireless communication system. The E-UMTS system is an evolution of the legacy UMTS system and the 3GPP is working on the basics of E-UMTS standardization. E-UMTS is also called an LTE system. For details of the technical specifications of UMTS and E-UMTS, refer to Release 7 and Release 8 of “3rd Generation Partnership Project; Technical Specification Group Radio Access Network”, respectively.
An object of the present invention is to provide a method of transmitting a reference signal for multi user multiplexing in a multi-antenna-based wireless communication system and an apparatus therefor in the following based on the aforementioned discussion.
To achieve these objects and other advantages and in accordance with the purpose of the invention, as embodied and broadly described herein, according to one embodiment, a method of receiving a DM-RS (demodulation-reference signal), which is received by a user equipment (UE) from a base station in a multi-antenna-based wireless communication system, includes the steps of configuring a plurality of parameter sets via a higher layer signaling, receiving a downlink control signal including information on an antenna port for the DM-RS and a number of layers, and receiving the DM-RS and a downlink data signal corresponding to the DM-RS based on the downlink control signal. In this case, the downlink control signal includes an indicator for indicating one of a plurality of the parameter sets and each of a plurality of the parameter sets includes information indicating a scrambling identifier of the DM-RS.
To further achieve these objects and other advantages and in accordance with the purpose of the invention, as embodied and broadly described herein, according to a different embodiment, a user equipment (UE) in a wireless communication system includes a wireless communication module configured to transceive a signal with a network and a processor configured to process the signal, wherein the processor configures a plurality of parameter sets via a higher layer signal, receives a downlink control signal including information on an antenna port for the DM-RS and a number of layers, and receives the DM-RS and a downlink data signal corresponding to the DM-RS based on the downlink control signal. In this case, the downlink control signal includes an indicator for indicating one of a plurality of the parameter sets and each of a plurality of the parameter sets includes information for indicating a scrambling identifier of the DM-RS.
In this case, the scrambling identifier of the DM-RS is mapped to a virtual cell identifier for generating the DM-RS sequence. Preferably, the scrambling identifier of the DM-RS may have a value of 0 or 1 and a virtual cell identifier corresponding to the scrambling identifier 0 of the DM-RS is different from a virtual cell identifier corresponding to the scrambling identifier 1 of the DM-RS.
Or, each of a plurality of the parameter sets may include a virtual cell identifier for generating the DM-RS sequence. In addition, each of a plurality of the parameter sets may include information on an OCC (orthogonal cover code) length applied to the DM-RS.
According to embodiments of the present invention, it is able to efficiently transmit a reference signal for multi user multiplexing in a multi-antenna-based wireless communication system.
FIG. 1 is a diagram schematically illustrating a network structure of an evolved universal mobile telecommunications system (E-UMTS) as an exemplary radio communication system;
FIG. 2 is a diagram illustrating structures of a control plane and a user plane of a radio interface protocol between a UE and an evolved UMTS terrestrial radio access network (E-UTRAN) based on the 3GPP radio access network specification;
FIG. 4 is a diagram illustrating the structure of a radio frame used in a long term evolution (LTE) system;
FIG. 5 is a diagram illustrating the structure of a DL radio frame used in an LTE system;
FIG. 6 is a diagram illustrating the structure of a UL subframe in an LTE system;
FIGS. 7 and 8 illustrate downlink Reference Signal (RS) configurations in an LTE system supporting downlink transmission through four antennas (4-Tx downlink transmission);
FIG. 9 illustrates an exemplary downlink Demodulation Reference Signal (DM-RS) allocation defined in a current 3GPP standard specification;
FIG. 10 is a flowchart for an example of transmitting a DM-RS for MU-MIMO according to embodiment of the present invention;
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Browse patents: Next Prev Patent InfoApplication # US 20170079017 A1Publish Date 03/16/2017 Document # 15263579 File Date 09/13/2016 USPTO Class Other USPTO Classes International Class / Drawings 12 Antenna Base Station Communication System Demodulation Downlink Modulation Wireless Follow us on Twitter@FreshPatents
20170316|20170079017|transmitting reference signal for multi user mutliplexing in multi-antenna-based wireless communication system and apparatus therefor|The present specification proposes a method for a user equipment to receive a DM-RS (demodulation-reference signal) from a base station in a multi-antenna-based wireless communication system. Specifically, the method includes the step of configuring a plurality of parameter sets via a higher layer signaling, receiving a downlink control signal including |Lg-Electronics-Inc