METHOD FOR TRANSRECEIVING SIGNAL AND APPARATUS FOR SAME

• US 20150358997A1
• Filed: 02/06/2014
• Published: 12/10/2015
• Est. Priority Date: 02/06/2013
• Status: Active Grant

• Current Assignee: LG Electronics, Inc. (LG Corporation)
• Original Assignee: LG Electronics, Inc. (LG Corporation)
• Inventors: YANG, Suckchel, YI, Yunjung, AHN, Joonkui, SEO, Dongyoun
• Granted Patent: US 9,706,567 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: H04L 1/1812 Hybrid protocols; Hybrid automatic repeat request [HARQ]
• CPC Class Codes: H04L 1/1854 Scheduling and prioritising arrangements
• CPC Class Codes: H04L 5/0048 Allocation of pilot signals, i.e. of signals known to the receiver
• CPC Class Codes: H04L 5/0055 Physical resource allocation for ACK/NACK for physical mapping arrangements in ARQ protocols H04L1/1861
• CPC Class Codes: H04L 5/0092 Indication of how the channel is divided
• CPC Class Codes: H04L 5/14 Two-way operation using the same type of signal, i.e. duplex
• CPC Class Codes: H04W 72/12 Wireless traffic scheduling
• CPC Class Codes: H04W 72/23 in the downlink direction of a wireless link, i.e. towards a terminal
• CPC Class Codes: H04W 88/02 Terminal devices

Abstract

The present invention relates to a method for receiving a signal in a wireless communication system and an apparatus for same, and comprises a step of receiving, via a physical downlink control channel, downlink control information including scheduling information for a K number of subframes, wherein K is bigger than 1, the scheduling information is not applied to at least one subframe when the at least one subframe from among the K number of subframes is a special subframe, and wherein the special subframe is at least a subframe configured to a multicast-broadcast single-frequency network (MBSFN), a subframe configured to receive a physical multicast channel (PMCH), a subframe configured so that a positioning reference signal (PRS) is transmitted, or a subframe including a downlink section, a protection section, and an uplink section.

Claims

1. A method for receiving a signal by a user equipment in a wireless communication system, the method comprising:

receiving downlink control information comprising scheduling information about K subframes through a physical downlink control channel,

wherein K is greater than 1,

wherein when at least one subframe among the K subframes corresponds to a specific subframe, the scheduling information is not applied to the at least one subframe, and

wherein the specific subframe includes at least a subframe configured for a multicast-broadcast single-frequency network (MBSFN), or a subframe configured to receive a physical multicast channel (PMCH), or a subframe configured to transmit a positioning reference signal (PRS), or a subframe comprising a downlink period, a guard period, and an uplink period.

2. The method according to claim 1, wherein the specific subframe further includes a subframe in which a physical broadcast channel (PBCH) signal is transmitted, or a subframe configured to transmit system information, or a subframe configured to transmit a paging signal, or a subframe configured to transmit a synchronization signal, or a subframe configured to perform semi-persistent scheduling, or a subframe configured to enable transmission of a physical random access channel (PRACH), or a subframe configured not to transmit a demodulation reference signal (DMRS), or a subframe configured to transmit a channel state information-reference signal (CSI-RS).

3. The method according to claim 1, wherein the scheduling information is applied to K subframes except for the at least one subframe.

4. The method according to claim 1, wherein the scheduling information is applied to M subframes except for the at least one subframe, and wherein M is smaller than K.

5. The method according to claim 1, wherein the downlink control information further includes information indicating a subframe to which the scheduling is not applied among the K subframes, and

wherein the specific subframe further includes a subframe indicated such that the scheduling information is not applied through the downlink control information.

6. The method according to claim 1, wherein the downlink control information further includes information indicating whether the downlink control information is applied to the K subframes or applied to only a subframe in which the downlink information is received.

7. The method according to claim 1, further comprising receiving M data signals using the scheduling information,

wherein M is equal to or smaller than K, and different hybrid automatic repeat request (HARQ) process numbers are allocated to the M data signals.

8. The method according to claim 7, wherein the HARQ process number is pre-allocated through high layer signaling.

9. The method according to claim 7, wherein the downlink control information further includes a field indicating the HARQ process number, the HARQ process number is consecutively and increasingly allocated from a value of the field and is determined by applying a modulo operation using the allocated value as a specific value, and the specific value is a maximum number of HARQ processes or a maximum number of HARQ process receive buffer, supported by the user equipment.

10. The method according to claim 7, wherein the downlink control information further includes index information indicating the HARQ process number, and the index uniquely determines a set of the HARQ process number.

11. The method according to claim 10, wherein when a set of the HARQ process number is {k_i}_i=0^K−

1, the index information is given according to

12. The method according to claim 1, wherein blind decoding (BD) is not performed on the K subframes to which the downlink control information is applied.

13. The method according to claim 1, wherein, when other downlink control information is detected in one subframe of the K subframes, a data signal is received according to the other downlink control information with respect to the one subframe.

14. The method according to claim 13, wherein an operation of receiving a data signal according to the downlink control information is omitted with respect to a subframe after the one subframe in the K subframes.

15. A user equipment of a wireless communication system, the user equipment comprising:

a radio frequency (RF) unit; and

a processor, wherein the processor is configured to receive downlink control information comprising scheduling information about K subframes through a physical downlink control channel by the RF unit,

wherein K is greater than 1,

wherein when at least one subframe among the K subframes corresponds to a specific subframe, the scheduling information is not applied to the at least one subframe, and

wherein the specific subframe includes at least a subframe configured for a multicast-broadcast single-frequency network (MBSFN), or a subframe configured to receive a physical multicast channel (PMCH), or a subframe configured to transmit a positioning reference signal (PRS), or a subframe comprising a downlink period, a guard period, and an uplink period.