Method for processing NDI in random access procedure and a method for transmitting and receiving a signal using the same

• US 9,693,343 B2
• Filed: 07/21/2016
• Issued: 06/27/2017
• Est. Priority Date: 07/03/2008
• Status: Active Grant

• Current Assignee: LG Electronics, Inc. (LG Corporation)
• Original Assignee: LG Electronics, Inc. (LG Corporation)
• Inventors: Yi, Seung June, Lee, Young Dae, Chun, Sungduck, Park, Sung Jun
• Primary Examiner(s): Nguyen, Brian D
• Assistant Examiner(s): NGUYEN, TOAN D
• Application Number:
  US15/216,515
• Publication Number:
  US 20160330733A1
• Time in Patent Office: 341 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 is provided for transmitting an uplink signal by a user equipment (UE). The UE receives a first uplink grant including a first new data indicator (NDI) from a network, determines whether the first NDI has been toggled by comparing the first NDI to a second NDI, and transmits the uplink signal based on a result of the determining to the network. The second NDI is included in a second uplink grant that was previously received. The second uplink grant was identified by an identifier except for a temporary cell identifier.

Claims

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

receiving a first uplink grant including a first new data indicator (NDI) from a network;

determining whether the first NDI has been toggled by comparing the first NDI to a second NDI; and

transmitting the uplink signal based on a result of the determining to the network,

wherein the second NDI is included in a second uplink grant that was previously received, and

wherein the second uplink grant was identified by an identifier except for a temporary cell identifier.

2. The method of claim 1, wherein the transmitting the uplink signal comprises transmitting new data to the network when the first NDI has been determined to be toggled.

3. The method of claim 1, wherein the transmitting the uplink signal comprises transmitting retransmission data to the network when the first NDI has been determined not to be toggled.

4. The method of claim 1, wherein the identifier includes a cell identifier.

5. The method of claim 1, wherein the first uplink grant is received after a random access procedure.

6. A user equipment (UE) comprising:

a receiver configured to receive a first uplink grant including a first new data indicator (NDI) from a network;

a processor configured to determine whether the first NDI has been toggled by comparing the first NDI to a second NDI; and

a transmitter configured to transmit an uplink signal based on a result of the determining to the network,

wherein the second NDI is included in a second uplink grant that was previously received by the receiver, and

wherein the second uplink grant was identified by an identifier except for a temporary cell identifier.

7. The UE of claim 6, wherein the uplink signal comprises new data when the first NDI has been determined to be toggled.

8. The UE of claim 6, wherein the uplink signal comprises retransmission data when the first NDI has been determined by the processor not to be toggled.

9. The UE of claim 6, wherein the identifier includes a cell identifier.

10. The UE of claim 6, wherein the first uplink grant is received by the receiver after a random access procedure.