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US 10,568,081 B2Granted
Scheduling uplink transmissions
AssigneeSamsung Electronics Co., Ltd.
InventorAris Papasakellariou
Life of this patent
Estimating the term…
Abstract
Methods and apparatus are provided for scheduling transmissions of data channels, control channels, or random access channels using downlink control information (DCI) formats. A DCI format can configure a transmission of one or multiple data channels over respective one or multiple transmission time intervals. A first DCI format can configure the parameters for a channel transmission and a second DCI format can trigger the channel transmission and indicate respective one or more transmission time intervals.
Claims18
A user equipment (UE), comprising:
- a receiver configured to receive a downlink control information (DCI) format that configures transmissions of a number of physical uplink data channels (PUSCHs) over a number of subframes up to a predetermined maximum number of NSF subframes, wherein the DCI format includes:
- a number of subframes field that is represented by ┌ log2(NSF)┐ bits and indicates a number nSF≤NSF of subframes for nSF PUSCH transmissions,
- a timing offset field that includes a timing offset oi for a subframe of a first of the PUSCH transmissions that is determined as n+k+oi, wherein n is a subframe of the DCI format reception and k is a minimum number of subframes for a PUSCH transmission after the DCI format reception,
- a hybrid automatic repeat request (HARQ) process number field that is represented by ┌ log2(NHARQ)┐ bits and indicates a HARQ process number nHARQ from a total of NHARQ HARQ processes, wherein HARQ process number nHARQ applies for the first PUSCH transmission, HARQ process number (nHARQ+j−1)mod NHARQ applies for a j-th of the PUSCH transmissions, and 1≤j≤nSF, and
- a new data indicator (NDI) field that is represented by NSF bits and indicates whether a PUSCH transmission, from the nSF PUSCH transmissions, conveys a new data transport block (TB) or a retransmission of a data TB;
- and
- a transmitter configured to transmit the nSF PUSCH transmissions over the nSF subframes,
- wherein is a ceiling function that rounds a number to its immediately next larger integer and log2(x) is a logarithm function with base 2 for a number x.
5 more elements
A base station, comprising:
- a transmitter configured to transmit a downlink control information (DCI) format that configures transmission of a number of physical uplink data channels (PUSCHs) over a number of subframes up to a predetermined maximum number of NSF subframes, wherein the DCI format includes:
- a number of subframes field that is represented by ┌ log2(NSF)┐ bits and indicates a number nSF≤NSF of subframes for nSF PUSCH transmissions,
- a timing offset field that includes a timing offset oi for a subframe of a first of the PUSCH transmissions that is determined as n+k+oi, wherein n is a subframe of the DCI format reception and k is a minimum number of subframes for a PUSCH transmission after the DCI format transmission,
- a hybrid automatic repeat request (HARQ) process number field that is represented by ┌ log2(NHARQ)┐ bits and indicates a HARQ process number nHARQ from a total of NHARQ HARQ processes, wherein HARQ process number nHARQ applies for the first PUSCH transmission, HARQ process number (nHARQ+j−1)mod NHARQ applies for a j-th of the PUSCH transmissions, and 1≤j≤nSF, and
- a new data indicator (NDI) field that is represented by NSF bits and indicates whether a PUSCH transmission, from the nSF PUSCH transmissions, conveys a new data transport block (TB) or a retransmission of a data TB;
- and
- a receiver configured to receive the nSF PUSCH transmissions over the nSF subframes,
- wherein is a ceiling function that rounds a number to its immediately next larger integer and log2(x) is a logarithm function with base 2 for a number x.
5 more elements
A user equipment (UE), comprising:
- a receiver configured to receive:
- a first downlink control information (DCI) format in a subframe having a first index that configures parameters for a transmission of a channel, and
- a second DCI format in a subframe having a second index that triggers the transmission of the channel;
- and
- a transmitter configured to transmit the channel in a subframe having a third index,
- wherein the second DCI format indicates a configuration for a subframe that includes a number of symbols, and
- wherein a first number consecutive subframe symbols supports reception of signals and a second number of last consecutive subframe symbols supports transmission of signals.
4 more elements
A user equipment (UE), comprising:
- a receiver configured to receive:
- a first downlink control information (DCI) format in a subframe having a first index that configures parameters for a transmission of a channel, and
- a second DCI format in a subframe having a second index that triggers the transmission of the channel;
- and
- a transmitter configured to transmit the channel in a subframe having a third index,
- wherein the second DCI format indicates an offset, and
- wherein the index of the third subframe is determined as a sum of the index of the second subframe and the offset.
4 more elements
A base station, comprising:
- a transmitter configured to transmit:
- a first downlink control information (DCI) format in a subframe having a first index that configures parameters for a reception of a channel, and
- a second DCI format in a subframe having a second index that triggers the reception of the channel;
- and
- a receiver configured to receive the channel in a subframe having a third index,
- wherein the second DCI format indicates a configuration for a subframe that includes a number of symbols, and
- wherein a first number consecutive subframe symbols supports transmission of signals and a second number of last consecutive subframe symbols supports reception of signals.
4 more elements
A base station, comprising:
- a transmitter configured to transmit:
- a first downlink control information (DCI) format in a subframe having a first index that configures parameters for a reception of a channel, and
- a second DCI format in a subframe having a second index that triggers the reception of the channel;
- and
- a receiver configured to receive the channel in a subframe having a third index,
- wherein the second DCI format indicates an offset, and
- wherein the index of the third subframe is determined as a sum of the index of the second subframe and the offset.
4 more elements
Dependencies are inferred from the claim text.