Method and apparatus for determining transport block size in wireless communication system

• US 9,974,097 B2
• Filed: 12/03/2013
• Issued: 05/15/2018
• Est. Priority Date: 12/03/2012
• Status: Active Grant

• Current Assignee: LG Electronics, Inc. (LG Corporation)
• Original Assignee: LG Electronics, Inc. (LG Corporation)
• Inventors: Seo, Dongyoun, Seo, Hanbyul, Kim, Kijun, Ahn, Joonkui, Kim, Hakseong
• Primary Examiner(s): Phillips, Hassan
• Assistant Examiner(s): George, Ayanah
• Application Number:
  US14/649,130
• Publication Number:
  US 20150319776A1
• Time in Patent Office: 1,624 Days
• Field of Search: None
• CPC Class Codes: H04B 7/0623 Auxiliary parameters, e.g. power control [PCB] or not acknowledged commands [NACK], used as feedback information
• CPC Class Codes: H04B 7/208 Frequency-division multiple access [FDMA]
• CPC Class Codes: H04L 1/1671 the supervisory signal being transmitted together with control information
• CPC Class Codes: H04L 1/1819 with retransmission of additional or different redundancy
• CPC Class Codes: H04L 1/1822 involving configuration of automatic repeat request [ARQ] with parallel processes
• CPC Class Codes: H04L 27/2646 using feedback from receiver for adjusting OFDM transmission parameters, e.g. transmission timing or guard interval length
• CPC Class Codes: H04W 72/04 Wireless resource allocation
• CPC Class Codes: H04W 74/002 Transmission of channel access control information
• CPC Class Codes: H04W 88/005 Data network PoA devices
• CPC Class Codes: H04W 88/08 Access point devices

Abstract

A method for determining a transport block size in a wireless communication system, and an apparatus using the method are provided. The method comprises: determining the number of effective resource blocks; and determining the transport block size of data transmitted on a data channel according to the number of effective resource blocks. In addition, a method for transmitting ACK/NACK (acknowledgement/not-acknowledgement) is provided.

Claims

1. A method for transmitting data and acknowledgement/negative-acknowledgement (ACK/NACK) in a wireless communication system, the method performed by a user equipment (UE) and comprising:

determining a number of effective resource blocks;

determining a transport block size (TBS) of data transmitted on an uplink data channel according to the number of effective resource blocks;

multiplexing the data and the ACK/NACK in a transport block having the determined TBS; and

transmitting the data and the ACK/NACK through the uplink data channel,

wherein the number of effective resource blocks is determined based on remaining resources by excluding resources for transmitting control information from resources allocated to the uplink data channel,

wherein the resources for transmitting control information are calculated using a predetermined modulation and coding scheme (MCS) regardless of an actual MCS applied to the control information, and

wherein a number of symbols (M_HARQ-ACK) used to transmit the ACK/NACK is determined by the following equation,

2. The method of claim 1, wherein the number of effective resource blocks is determined based on a value obtained by dividing the remaining resources by a unit of resource blocks.

3. The method of claim 1, wherein the uplink data channel is a physical uplink shared channel (PUSCH).

4. The method of claim 1, wherein the transport block size is determined based on an index I_TBS, which is determined by using an index I_MCS indicating the MCS, and the number of effective resource blocks.

5. An apparatus comprising:

a radio frequency (RF) unit configured to transmit and receive a radio signal; and

a processor operatively coupled to the RF unit,

wherein the processor is configured to;

determine a number of effective resource blocks,

determine a transport block size (TBS) of data transmitted on an uplink data channel according to the number of effective resource blocks,

multiplex the data and acknowledgement/negative-acknowledgement (ACK/NACK) in a transport block having the determined TBS, and

transmit the data and the ACK/NACK through the uplink data channel,

wherein the number of effective resource blocks is determined based on remaining resources by excluding resources for transmitting control information from resources allocated to the uplink data channel,

wherein the resources for transmitting control information are calculated using a predetermined modulation and coding scheme (MCS) regardless of an actual MCS applied to the control information, and

wherein a number of symbols (M_HARQ-ACK) used to transmit the ACK/NACK is determined by the following equation,

6. The apparatus of claim 5, wherein the number of effective resource blocks is determined based on a value obtained by dividing the remaining resources by a unit of resource blocks.

7. The apparatus of claim 5, wherein the uplink data channel is a physical uplink shared channel (PUSCH).

8. The apparatus of claim 5, wherein the transport block size is determined based on an index I_TBS, which is determined by using an index I_MCS indicating the MCS, and the number of effective resource blocks.