HARQ systems and methods for grant-free uplink transmissions
First Claim
Patent Images
1. A method performed by a user equipment (UE) comprising:
- transmitting an initial grant-free uplink transmission of encoded data;
without receiving a negative acknowledgement (NACK) for the encoded data, addressed to the UE, transmitting at least one grant-free uplink retransmission of the encoded data;
wherein the initial grant-free uplink transmission utilizes a first multiple access (MA) signature, and a grant-free uplink retransmission of the encoded data utilizes a second MA signature and carries retransmission data for facilitating decoding of the encoded data.
1 Assignment
0 Petitions
Accused Products
Abstract
Systems and methods are disclosed for performing hybrid automatic repeat request (HARQ) for grant-free uplink transmissions. Some of the systems and methods disclosed herein may address problems such as how to perform acknowledgement (ACK) and/or negative acknowledgement (NACK), how to determine and signal retransmission timing, how to determine the transmission/retransmission attempt and the redundancy version (RV), and/or how to perform the HARQ combining.
28 Citations
48 Claims
-
1. A method performed by a user equipment (UE) comprising:
-
transmitting an initial grant-free uplink transmission of encoded data; without receiving a negative acknowledgement (NACK) for the encoded data, addressed to the UE, transmitting at least one grant-free uplink retransmission of the encoded data; wherein the initial grant-free uplink transmission utilizes a first multiple access (MA) signature, and a grant-free uplink retransmission of the encoded data utilizes a second MA signature and carries retransmission data for facilitating decoding of the encoded data. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 16)
-
-
15. A method performed by a user equipment (UE) comprising:
-
transmitting an initial grant-free uplink transmission of encoded data; without receiving a negative acknowledgement (NACK) for the encoded data, addressed to the UE, transmitting at least one grant-free uplink retransmission of the encoded data; wherein a grant-free uplink transmission from the UE utilizes at least one of a multiple access (M A) signature and an uplink resource that identifies a redundancy version (RV) of the encoded data in the grant-free uplink transmission.
-
-
17. A user equipment (UE) comprising:
-
at least one antenna; and a grant-free transmission module; the at least one antenna configured to transmit an initial grant-free uplink transmission of encoded data; the grant-free transmission module configured to, without receiving a negative acknowledgement (NACK) addressed to the UE for the encoded data, cause the UE to transmit at least one grant-free uplink retransmission of the encoded data; wherein the initial grant-free uplink transmission utilizes a first multiple access (MA) signature, and a grant-free uplink retransmission of the encoded data utilizes a second MA signature and carries retransmission data for facilitating successful decoding of the encoded data. - View Dependent Claims (18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 32)
-
-
31. A user equipment (UE) comprising:
-
at least one antenna; and a grant-free transmission module; the at least one antenna configured to transmit an initial grant-free uplink transmission of encoded data; the grant-free transmission module configured to, without receiving a negative acknowledgement (NACK) addressed to the UE for the encoded data, cause the UE to transmit at least one grant-free uplink retransmission of the encoded data, wherein a grant-free uplink transmission from the UE utilizes at least one of a multiple access (MA) signature and an uplink resource that identifies a redundancy version (RV) of the encoded data in the grant-free uplink transmission.
-
-
33. A method performed by a base station comprising:
-
receiving an initial grant-free uplink transmission of encoded data from a user equipment (UE); without transmitting a negative acknowledgement (NACK) for the encoded data, receiving at least one grant-free uplink retransmission of the encoded data; wherein; the initial grant-free uplink transmission utilizes a first multiple access (MA) signature; a grant-free uplink retransmission of the encoded data is also received without transmitting an acknowledgement (ACK) for the encoded data; and the grant-free uplink retransmission of the encoded data utilizes a second multiple access (MA) signature and carries retransmission data for facilitating decoding of the encoded data. - View Dependent Claims (34, 35, 36, 37, 38, 39)
-
-
40. A method performed by a base station comprising:
-
receiving an initial grant-free uplink transmission of encoded data from a user equipment (UE); without transmitting a negative acknowledgement (NACK) for the encoded data, receiving at least one grant-free uplink retransmission of the encoded data; wherein a grant-free uplink transmission from the UE utilizes at least one of a multiple access (MA) signature and an uplink resource that identifies a redundancy version (RV) of the encoded data in the grant-free uplink transmission.
-
-
41. A base station comprising:
-
at least one antenna; and a grant-free transmission module; the at least one antenna configured to receive an initial grant-free uplink transmission of an encoded data; the grant-free transmission module configured to, without generating a negative acknowledgement (NACK) for the encoded data, receive via the at least one antenna at least one grant-free uplink retransmission of the encoded data, wherein; the initial grant-free uplink transmission utilizes a first multiple access (MA) signature; a grant-free uplink retransmission of the encoded data is also received without generating an acknowledgement (ACK) for the encoded data; and the grant-free uplink retransmission of the encoded data utilizes a second multiple access (MA) signature and carries retransmission data for facilitating decoding of the encoded data. - View Dependent Claims (42, 43, 44, 45, 46, 47)
-
-
48. A base station comprising:
-
at least one antenna; and a grant-free transmission module; the at least one antenna configured to receive an initial grant-free uplink transmission of an encoded data; the grant-free transmission module configured to, without generating a negative acknowledgement (NACK) for the encoded data, receive via the at least one antenna at least one grant-free uplink retransmission of the encoded data; wherein a grant-free uplink transmission from the UE utilizes at least one of a multiple access (MA) signature and an uplink resource that identifies a redundancy version (RV) of the encoded data in the grant-free uplink transmission.
-
Specification