METHOD FOR PROCESSING NDI IN RANDOM ACCESS PROCEDURE AND A METHOD FOR TRANSMITTING AND RECEIVING A SIGNAL USING THE SAME

• US 20170273074A1
• Filed: 06/02/2017
• Published: 09/21/2017
• Est. Priority Date: 07/03/2008
• Status: Active Grant

• Current Assignee: LG Electronics, Inc. (LG Corporation)
• Original Assignee: LG Electronics, Inc. (LG Corporation)
• Inventors: PARK, Sung Jun, YI, Seung June, LEE, Young Dae, CHUN, Sungduck
• Granted Patent: US 10,321,444 B2
• Time in Patent Office: Days
• CPC Class Codes: H04L 1/1812 Hybrid protocols; Hybrid automatic repeat request [HARQ]
• CPC Class Codes: H04L 1/1822 involving configuration of automatic repeat request [ARQ] with parallel processes
• CPC Class Codes: H04L 1/1887 Scheduling and prioritising arrangements
• CPC Class Codes: H04W 72/21 in the uplink direction of a wireless link, i.e. towards the network
• CPC Class Codes: H04W 72/23 in the downlink direction of a wireless link, i.e. towards a terminal
• CPC Class Codes: H04W 74/006 in the downlink, i.e. towards the terminal
• CPC Class Codes: H04W 74/0833 Random access procedures, e.g. with 4-step access

Abstract

A method for transmitting an uplink signal by a user equipment (UE). The method includes receiving an uplink grant including a new data indicator (NDI) on a physical downlink control channel (PDCCH) from a network, determining whether the PDCCH is not addressed to a temporary cell identifier, determining whether the NDI has been toggled when the PDCCH is not addressed to the temporary cell identifier, and transmitting a new data to the network when the NDI has been toggled.

Claims

1. A method for transmitting an uplink signal by a user equipment (UE), the method comprising:

receiving an uplink grant including a new data indicator (NDI) on a physical downlink control channel (PDCCH) from a network;

determining whether the PDCCH is not addressed to a temporary cell identifier;

determining whether the NDI has been toggled when the PDCCH is not addressed to the temporary cell identifier; and

transmitting a new data to the network when the NDI has been toggled.

2. The method of claim 1, further comprising:

performing a retransmission, when the NDI has not been toggled.

3. A user equipment (UE) comprising:

a receiver configured to receive an uplink grant including a new data indicator (NDI) on a physical downlink control channel (PDCCH) from a network;

a processor configured to determine whether the PDCCH is not addressed to a temporary cell identifier, and to determine whether the NDI has been toggled when the PDCCH is not addressed to the temporary cell identifier; and

a transmitter configured to transmit a new data to the network when the NDI has been toggled.

4. The UE of claim 3, wherein the processor is further configured to control the transmitter to perform a retransmission, when the NDI has not been toggled.