Method and device for setting a control channel and a data channel in a wireless communication system

• US 9,769,820 B2
• Filed: 10/03/2016
• Issued: 09/19/2017
• Est. Priority Date: 07/14/2011
• Status: Active Grant

• Current Assignee: Godo Kaisha IP Bridge 1 (IP Bridge, Inc.)
• Original Assignee: LG Electronics, Inc. (LG Corporation)
• Inventors: Seo, Dong Youn, Ahn, Joon Kui, Yang, Suck Chel, Seo, Han Byul
• Primary Examiner(s): Beyen, Zewdu A
• Application Number:
  US15/284,372
• Publication Number:
  US 20170041907A1
• Time in Patent Office: 351 Days
• Field of Search: None
• CPC Class Codes: H04L 27/2601 Multicarrier modulation systems
• CPC Class Codes: H04L 5/001 the frequencies being arranged in component carriers
• CPC Class Codes: H04L 5/0044 allocation of payload
• 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: H04L 5/0064 Rate requirement of the data, e.g. scalable bandwidth, data priority
• CPC Class Codes: H04L 5/0091 Signaling for the administration of the divided path
• CPC Class Codes: H04W 72/23 in the downlink direction of a wireless link, i.e. towards a terminal

Abstract

The present invention relates to a method for configuring a starting position of a control channel in a wireless communication system, and a terminal using the same. The method includes receiving duration information about a physical downlink control channel from the first orthogonal frequency division multiplexing (OFDM) symbol of a downlink subframe; and configuring a first OFDM symbol after OFDM symbols indicated by the duration information, as a starting point of an enhanced-physical downlink control channel. The downlink subframe includes a plurality of subcarriers in a frequency domain and 12 or 14 OFDM symbols in a time domain. The PDCCH includes the first N (N is a natural number of from 1 to 4) number of OFDM symbols of the downlink subframe. The duration information indicates the N number of OFDM symbols. The E-PDCCH comprises the starting point to the last OFDM symbol of the downlink subframe.

Claims

1. A method for configuring a starting position of channel, performed by a Base Station (BS) in a wireless communication system, the method comprising:

transmitting a Physical Downlink Shared Channel (PDSCH) to a user equipment (UE); and

transmitting an Enhanced Physical Downlink Control CHannel (EPDCCH) to the UE,

wherein, if position information informing of a starting orthogonal frequency division multiplexing (OFDM) symbol of the EPDCCH is configured to the UE through a radio resource control (RRC) message, the starting OFDM symbol for the EPDCCH corresponds to the position information within the RRC message,

wherein, if the position information is not configured to the UE through the RRC message, the starting OFDM symbol for the EPDCCH is an OFDM symbol next to a Physical Downlink Control Channel (PDCCH) region checked through a Physical Control Format Indicator Channel (PCFICH), and

wherein, if the PDSCH is assigned by the EPDCCH in a same serving cell, a starting OFDM symbol for the PDSCH and a starting OFDM symbol for the EPDCCH are the same.

2. The method of claim 1, wherein the starting OFDM symbol is a symbol in a subframe comprising a plurality of OFDM symbols.

3. The method of claim 1, wherein the EPDCCH is demodulated by a Demodulation Reference Signal (DMRS).

7. The method of claim 1, wherein if the EPDCCH is received on a first serving cell and the PDSCH is received on a second serving cell, a starting OFDM symbol for the PDSCH is given by another position information informing the starting OFDM symbol for the PDSCH for the second serving cell.

4. A Base Station (BS) comprising:

a transceiver configured to transmit and receive radio signals; and

a processor connected to the transceiver,

wherein the processor is configured to

transmit a Physical Downlink Shared Channel (PDSCH) to a user equipment (UE); and

transmit an Enhanced Physical Downlink Control CHannel (EPDCCH) to the UE,

wherein, if position information informing of a starting orthogonal frequency division multiplexing (OFDM) symbol of the EPDCCH is configured to the UE through a radio resource control (RRC) message, the starting OFDM symbol for the EPDCCH corresponds to the position information within the RRC message,

wherein, if the position information is not configured to the UE through the RRC message, the starting OFDM symbol for the EPDCCH is an OFDM symbol next to a Physical Downlink Control Channel (PDCCH) region checked through a Physical Control Format Indicator Channel (PCFICH), and

wherein, if the PDSCH is assigned by the EPDCCH in a same serving cell, a starting OFDM symbol for the PDSCH and a starting OFDM symbol for the EPDCCH are the same.

5. The BS of claim 4, wherein the starting OFDM symbol is a symbol in a subframe comprising a plurality of OFDM symbols.

6. The BS of claim 4, wherein the EPDCCH is demodulated by a Demodulation Reference Signal (DMRS).

8. The BS of claim 4, wherein if the EPDCCH is received on a first serving cell and the PDSCH is received on a second serving cell, a starting OFDM symbol for the PDSCH is given by another position information informing the starting OFDM symbol for the PDSCH for the second serving cell.