Method and apparatus for transmitting control information in wireless communication system

• US 10,694,513 B2
• Filed: 01/25/2019
• Issued: 06/23/2020
• Est. Priority Date: 11/13/2011
• Status: Active Grant

• Current Assignee: LG Electronics, Inc. (LG Corporation)
• Original Assignee: LG Electronics, Inc. (LG Corporation)
• Inventors: Seo, Inkwon, Seo, Hanbyul, Kim, Hakseong
• Primary Examiner(s): Divito, Walter J
• Assistant Examiner(s): Luo, Anthony
• Application Number:
  US16/258,093
• Publication Number:
  US 20190159185A1
• Time in Patent Office: 515 Days
• CPC Class Codes: H04L 5/0048 Allocation of pilot signals, i.e. of signals known to the receiver
• CPC Class Codes: H04L 5/0051 of dedicated pilots, i.e. pilots destined for a single user or terminal
• CPC Class Codes: H04L 5/0053 Allocation of signaling, i.e. of overhead other than pilot signals
• CPC Class Codes: H04W 72/20 Control channels or signalling for resource management
• CPC Class Codes: H04W 72/23 in the downlink direction of a wireless link, i.e. towards a terminal

Abstract

A method for enabling a base station to transmit control information in a wireless communication system according to one embodiment of the present invention, comprises a step of transmitting an enhanced physical downlink channel (E-PDCCH) for a terminal using at least one physical resource block pair among a plurality of physical resource block pairs for transmitting the E-PDCCH, wherein the plurality of physical resource block pairs include one or more physical resource block pair sets, and a parameter related to a demodulation reference signal for the E-PDCCH is set with respect to each physical resource block pair set.

Claims

1. A method for receiving a downlink control signal by User Equipment (UE) in wireless communication that includes a Base Station (BS), the method comprising:

receiving, by the UE from the BS, a first information related to an initial value of a first DeModulation Reference Signal (DMRS) scrambling sequence and a second information related to an initial value of a second DMRS scrambling sequence;

based on the first information, receiving, by the UE from the BS, a first Physical Downlink Control Channel (PDCCH) in a first PDCCH-related resource;

based on the second information, receiving, by the UE from the BS, a second PDCCH in a second PDCCH-related resource,

wherein the second PDCCH-related resource is different from the first PDCCH-related resource,

receiving, by the UE from the BS, a first Physical Downlink Shared CHannel (PDSCH) based on the first PDCCH; and

receiving, by the UE from the BS, a second PDSCH based on the second PDCCH,

wherein the initial value of the first DMRS scrambling sequence is configured to the first PDCCH-related resource and the initial value of the second DMRS scrambling sequence is configured to the second PDCCH-related resource.

2. The method of claim 1, wherein each of the first and second PDCCH-related resources is identified by a corresponding resource identifier.

3. The method of claim 1, wherein the first PDCCH-related resource is for the first PDCCH and the second PDCCH-related resource is for a second PDCCH.

4. The method of claim 1, wherein the first initial value is different from the second initial value.

5. A User Equipment (UE) for receiving a downlink control signal by in wireless communication that includes a Base Station (BS), the UE comprising:

a memory;

a transceiver; and

a processor operatively connected to the memory and the transceiver, the processor configured for;

receiving, by the UE from the BS, a first information related to an initial value of a first DeModulation Reference Signal (DMRS) scrambling sequence and a second information related to an initial value of a second DMRS scrambling sequence;

based on the first information, receiving, by the UE from the BS, a first Physical Downlink Control Channel (PDCCH) in a first PDCCH-related resource;

based on the second information, receiving, by the UE from the BS, a second PDCCH in a second PDCCH-related resource,

wherein the second PDCCH-related resource is different from the first PDCCH-related resource;

receiving, by the UE from the BS, a first Physical Downlink Shared CHannel (PDSCH) based on the first PDCCH; and

receiving, by the UE from the BS, a second PDSCH based on the second PDCCH,

wherein the initial value of the first DMRS scrambling sequence is configured to the first PDCCH-related resource and the initial value of the second DMRS scrambling sequence is configured to the second PDCCH-related resource.

6. The UE of claim 5, wherein each of the first and second PDCCH-related resources is identified by a corresponding resource identifier.

7. A method for transmitting a downlink control signal by a Base Station (BS) in wireless communication that includes User Equipment (UE), the method comprising:

transmitting, to the UE by the BS, a first information related to an initial value of a first DeModulation Reference Signal (DMRS) scrambling sequence and a second information related to an initial value of a second DMRS scrambling sequence;

based on the first information, transmitting, to the UE by the BS, a first Physical Downlink Control Channel (PDCCH) in a first PDCCH-related resource;

based on the second information, transmitting, to the UE by the BS, a second PDCCH in a second PDCCH-related resource,

wherein the second PDCCH-related resource is different from the first PDCCH-related resource;

transmitting, to the UE by the BS, a first Physical Downlink Shared CHannel (PDSCH) based on the first PDCCH; and

transmitting, to the UE by the BS, a second PDSCH based on the second PDCCH,

wherein the initial value of the first DMRS scrambling sequence is configured to the first PDCCH-related resource and the initial value of the second DMRS scrambling sequence is configured to the second PDCCH-related resource.

8. A Base Station (BS) for transmitting a downlink control signal by in wireless communication that includes a User Equipment (UE), the UE comprising:

a memory;

a transceiver; and

a processor operatively connected to the memory and the transceiver, the processor configured for;

transmitting, to the UE by the BS, a first information related to an initial value of a first DeModulation Reference Signal (DMRS) scrambling sequence and a second information related to an initial value of a second DMRS scrambling sequence;

based on the first information, transmitting, to the UE by the BS, a first Physical Downlink Control Channel (PDCCH) in a first PDCCH-related resource;

based on the second information, transmitting, to the UE by the BS, a second PDCCH in a second PDCCH-related resource,

wherein the second PDCCH-related resource is different from the first PDCCH-related resource;

transmitting, to the UE by the BS, a first Physical Downlink Shared CHannel (PDSCH) based on the first PDCCH; and

transmitting, to the UE by the BS, a second PDSCH based on the second PDCCH,

wherein the initial value of the first DMRS scrambling sequence is configured to the first PDCCH-related resource and the initial value of the second DMRS scrambling sequence is configured to the second PDCCH-related resource.