Multiplexing control information in a physical uplink data channel

Patent metadata

Field	Value
Publication number	US-2018167932-A1
Application number	US-201715821128-A
Country	US
Kind code	A1
Filing date	Nov 22, 2017
Priority date	Dec 9, 2016
Publication date	Jun 14, 2018
Grant date	—

Abstract

Methods and apparatuses for multiplexing control information in a physical uplink data channel. A method of the UE includes receiving a configuration for a number of hybrid automatic repeat request acknowledgement (HARQ-ACK) information bits per data transport block (TB); receiving a downlink control information (DCI) format scheduling a reception of a data TB; and receiving the data TB that includes a number of data code blocks (CBs). The method further includes determining a number of HARQ-ACK information bits for a respective number of CB groups (CBGs); determining CBs per CBG; generating HARQ-ACK information bits; and generating a HARQ-ACK codeword. Additionally, the method includes transmitting the HARQ-ACK codeword in a physical uplink control channel (PUCCH) or in a physical uplink shared data channel (PUSCH).

First claim

What is claimed is:

1 . A user equipment (UE) comprising:
a receiver configured to:
receive a configuration for a number of N HARQ-ACK TB,max hybrid automatic repeat request acknowledgement (HARQ-ACK) information bits per data transport block (TB);
receive a downlink control information (DCI) format scheduling a reception of a data TB; and
receive the data TB that includes a number of N CB TB data code blocks (CBs); and
a processor configured to:
determine a number of N HARQ-ACK TB HARQ-ACK information bits for a respective number of CB groups (CBGs);
determine N CB CBG =┌N CB TB /N HARQ-ACK TB ┐CBs per CBG for first mod (N CB TB , N HARQ-ACK TB ) CBGs, and N CB CBG =└N CB TB /N HARQ-ACK TB ┘ CBs per CBG for last N HARQ-ACK TB -mod(N CB TB , N HARQ-ACK TB ) CBGs;
generate mod(N CB TB , N HARQ-ACK TB ) HARQ-ACK information bits for first mod(N CB TB , N HARQ-ACK TB ) CBGs;
generate N HARQ-ACK TB -mod(N CB TB , N HARQ-ACK TB ) HARQ-ACK information bits for last N HARQ-ACK -mod(N CB TB , N HARQ-ACK TB ) CBGs; and
generate a HARQ-ACK codeword that includes the mod (N CB TB , N HARQ-ACK TB ) HARQ-ACK information bits followed by the N HARQ-ACK -mod(N CB TB , N HARQ-ACK TB ) HARQ-ACK information bits, wherein 539 ┐ is a ceiling function, └ ┘ is a floor function, and modis a modulo function; and
a transmitter configured to transmit the HARQ-ACK codeword in a physical uplink control channel (PUCCH) or in a physical uplink shared data channel (PUSCH).

2 . The UE of claim 1 , wherein:
the processor is further configured to determine N HARQ-ACK TB as N HARQ-ACK TB =min(N HARQ-ACK TB,max , N CB TB ), and min is a minimum function.

3 . The UE of claim 2 , wherein when N HARQ-ACK TB is smaller than N HARQ-ACK TB,max , the HARQ-ACK codeword additionally includes last N HARQ-ACK TB,max -N HARQ-ACK TB HARQ-ACK information bits with a negative acknowledgement (NACK) value.

4 . The UE of claim 1 , wherein the DCI format includes N HARQ-ACK TB,max bits indicating whether a CBG of the data TB is a new CBG or a previous CBG when N HARQ-ACK TB is less than N HARQ-ACK TB,max .

5 . The UE of claim 1 , wherein the processor is further configured to determine N CB TB as N CB TB =┌TBS/CBS max ┐ where TBS is a size of the data TB and CBS max is a predefined maximum size of a data CB.

6 . The UE of claim 1 , wherein the DCI format includes a field counting a number of CBGs in an ascending order of a slot index or of a cell index.

7 . The UE of claim 1 , wherein:
the receiver is further configured to receive a DCI format scheduling a transmission of a data TB in the PUSCH and including a field providing a first index for a modulation and coding scheme for the data TB; the processor is further configured to determine a second index, smaller than the first index, from the first index when the HARQ-ACK codeword is transmitted in the PUSCH; and the transmitter is further configured to transmit the data TB in the PUSCH using a modulation and coding scheme corresponding to the second index.

8 . A base station comprising:
a transmitter configured to:
transmit a configuration for a number of N HARQ-ACK TB,max hybrid automatic repeat request acknowledgement (HARQ-ACK) information bits per data transport block (TB);
transmit a downlink control information (DCI) format scheduling a transmission of a data TB; and
transmit the data TB that includes a number of N CB TB data code blocks (CBs); and
a processor configured to:
determine a number of N HARQ-ACK TB HARQ-ACK information bits for a respective number of CB groups (CBGs);
determine N CB CBG =┌N CB TB /N HARQ-ACK TB ┐ CBs per CBG for first mod (N CB TB , N HARQ-ACK TB ) CBGs, and N CB CBG =└N CB TB /N HARQ-ACK TB ┘ CBs per CBG for last N HARQ-ACK TB -mod(N CB TB , N HARQ-ACK TB ) CBGs;
determine mod(N CB TB , N HARQ-ACK TB ) HARQ-ACK information bits for first Mod(N CB TB , N HARQ-ACK TB ) CBGs;
determine N HARQ-ACK -mod (N CB TB , N HARQ -ACK TB ) HARQ-ACK information bits for last N HARQ-ACK TB -mod(N CB TB , N HARQ-ACK TB ) CBGS; and
determine a HARQ-ACK codeword that includes the mod (N CB TB , N HARQ-ACK TB ) HARQ-ACK information bits followed by the N HARQ-ACK TB -mod(N CB TB , N HARQ-ACK TB ) HARQ-ACK information bits, wherein ┌ 538 is a ceiling function, └ ┘ is a floor function, and mod is a modulo function; and
a receiver configured to receive the HARQ-ACK codeword in a physical uplink control channel (PUCCH) or in a physical uplink shared data channel (PUSCH).

9 . The base station of claim 8 , wherein:
the processor is further configured to determine as N HARQ-ACK TB as N HARQ-ACK TB =min(N HARQ-ACK TB,max , N CB TB ), and min is a minimum function.

10 . The base station of claim 9 , wherein when N HARQ-ACK TB is smaller than N HARQ-ACK TB,max , the HARQ-ACK codeword additionally includes last N HARQ-ACK TB,max -N HARQ-ACK TB HARQ-ACK information bits with a negative acknowledgement (NACK) value.

11 . The base station of claim 8 , wherein the DCI format includes N HARQ-ACK TB,max bits indicating whether a CBG of the data TB is a new CBG or a previous CBG when N HARQ-ACK TB is less than N HARQ-ACK TB,max .

12 . The base station of claim 8 , wherein the processor is further configured to determine N CB TB as N CB TB =┌TBS/CBS max ┐ where TBS is a size of the data TB and CBS max is a predefined maximum size of a data CB.

13 . The base station of claim 12 , wherein the DCI format includes a field counting a number of CBGs in an ascending order of a slot index or of a cell index.

14 . The base station of claim 12 , wherein:
the transmitter is further configured to transmit a DCI format scheduling a transmission of a data TB in the PUSCH and including a field providing a first index for a modulation and coding scheme for the data TB; the processor is further configured to determine a second index, smaller than the first index, from the first index when the HARQ-ACK codeword is transmitted in the PUSCH; and the receiver is further configured to receive the data TB in the PUSCH using a modulation and coding scheme corresponding to the second index.

15 . A method comprising:
receiving a configuration for a number of N HARQ-ACK TB,max hybrid automatic repeat request acknowledgement (HARQ-ACK) information bits per data transport block (TB); receiving a downlink control information (DCI) format scheduling a reception of a data TB; receiving the data TB that includes a number of N CB TB data code blocks (CBs); determining a number of N HARQ-ACK TB HARQ-ACK information bits for a respective number of CB groups (CBGs); determining N CB CBG =┌N CB TB /N HARQ-ACK TB ┐ for first mod (N CB TB , N HARQ-ACK TB ) CBGs, and N CB CBG =└N CB TB /N HARQ-ACK TB ┘ CBs per CBG for last N HARQ-ACK TB -mod(N CB TB , N HARQ-ACK TB ) CBGs; generating mod(N CB TB , N HARQ-ACK TB ) information bits for first mod(N CB TB , N HARQ-ACK TB ) CBGs; generating N HARQ-ACK TB -mod(N CB TB , N HARQ-ACK TB ) HARQ-ACK information bits for last N HARQ-ACK TB -mod(N CB TB , N HARQ-ACK TB ) CBGs; generating a HARQ-ACK codeword that includes the mod (N CB TB , N HARQ-ACK TB ) HARQ-ACK information bits followed by the N HARQ-ACK TB -mod(N CB TB , N HARQ-ACK TB ) HARQ-ACK information bits, wherein ┌ 538 is a ceiling function, └ 540 is a floor function, and mod is a modulo function; and transmitting the HARQ-AC

Assignees

• Samsung Electronics Co Ltd

Inventors

• Papasakellariou Aris

Classifications

• H04W72/21 Primary

  in the uplink direction of a wireless link, i.e. towards the network · CPC title

• H04L5/0053 Primary

  Allocation of signalling, i.e. of overhead other than pilot signals · CPC title

• H04L1/1671 Primary

  the supervisory signal being transmitted together with control information · CPC title

• H04L5/0055 Primary

  Physical resource allocation for ACK/NACK (for physical mapping arrangements in ARQ protocols H04L1/1861) · CPC title

• H04L5/0046

  Determination of the number of bits transmitted on different sub-channels · CPC title