Base station with a retransmission function
AssigneeNtt Docomo, Inc.
InventorsNobuhiko Miki, Hiroyuki Atarashi, Kenichi Higuchi, Mamoru Sawahashi
Life of this patent
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Abstract
A base station includes a control unit configured to avoid contention between a radio resource allocated to a transmission packet or a retransmission packet by a channel-condition-based scheduling unit and a radio resource allocated to a transmission packet or a retransmission packet by a persistent scheduling unit.
Claims14
A base station having a retransmission function for transmitting a retransmission packet when an error is detected in a transmission packet which is transmitted to a mobile station on a frequency band including multiple resource blocks, comprising:
- a channel-condition-based scheduling unit configured to schedule a transmission packet or a retransmission packet by allocating a radio resource to the transmission packet or the retransmission packet based on a channel condition for the mobile station;
- a persistent scheduling unit configured to schedule a transmission packet or a retransmission packet by allocating a radio resource to the transmission packet or the retransmission packet according to a predetermined cycle and a predetermined frequency allocation pattern;
- a control unit configured to avoid contention between the radio resource allocated to the transmission packet or the retransmission packet by the channel-condition-based scheduling unit and the radio resource allocated to the transmission packet or the retransmission packet by the persistent scheduling unit, and
- a non-transitory transmitting unit configured to transmit the transmission packet or the retransmission packet to the mobile station as a result of control by the control unit.
A base station having a retransmission function for transmitting a retransmission packet when an error is detected in a transmission packet which is transmitted to a mobile station, comprising:
- a channel-condition-based scheduling unit configured to schedule a transmission packet or a retransmission packet by allocating a radio resource to the transmission packet or the retransmission packet based on a channel condition for the mobile station;
- a broadcast/multicast data scheduling unit configured to schedule broadcast/multicast data on a broadcast/multicast channel by allocating a radio resource to the broadcast/multicast data to transmit the same transmission packet to multiple users within a cell;
- and
- a control unit configured to avoid contention between the radio resource allocated to the transmission packet or the retransmission packet by the channel-condition-based scheduling unit and the radio resource allocated to the broadcast/multicast data by the broadcast/multicast data scheduling unit, and
- a non-transitory transmitting unit configured to transmit the transmission packet or the retransmission packet to the mobile station as a result of control by the control unit.
A base station having a retransmission function for transmitting a retransmission packet when an error is detected in a transmission packet which is transmitted to a mobile station, comprising:
- a channel-condition-based scheduling unit configured to schedule a transmission packet or a retransmission packet with a variable transmission time interval by allocating a radio resource to the transmission packet or the retransmission packet based on a channel condition for the mobile station;
- a control unit configured to avoid contention among radio resources allocated to multiple retransmission packets with variable transmission time intervals by the channel-condition-based scheduling unit, and
- a non-transitory transmitting unit configured to transmit the transmission packet or the retransmission packet to the mobile station as a result of control by the control unit.
Dependencies are inferred from the claim text.