Base station apparatus and wireless communication method
First Claim
1. A base station apparatus which conducts a packet communication with a wireless communication terminal comprising:
- a retransmission request detection unit which detects a retransmission request from the wireless communication terminal;
a bandwidth assignment unit which assigns a communication bandwidth applied to the packet communication;
a modulation class calculation portion, based on both bandwidth information regarding the bandwidth assigned by the bandwidth assignment unit and a data amount of packets corresponding to the retransmission request, calculates a modulation class applied to a retransmission in order to adjust a number of retransmitted packets to be the same as a number of previously transmitted packets;
a modulation class determination unit which determines whether or not the modulation class is lower than a modulation class applied to a previous packet transmission; and
a retransmission unit which retransmits packets corresponding to the retransmission request based on the determination result regarding the modulation class.
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Accused Products
Abstract
A base station apparatus which conducts a packet communication with a wireless communication terminal includes: a retransmission request detection unit which detects a retransmission request from the wireless communication terminal; a bandwidth assignment unit which assigns a communication bandwidth applied to the packet communication; a modulation class calculation portion, based on both bandwidth information regarding the bandwidth assigned by the bandwidth assignment unit and a data amount of packets corresponding to the retransmission request, calculates a modulation class applied to a retransmission in order to adjust a number of retransmitted packets to be the same as a number of previously transmitted packets; a modulation class determination unit which determines whether or not the modulation class is lower than a modulation class applied to a previous packet transmission; and a retransmission unit which retransmits packets corresponding to the retransmission request based on the determination result regarding the modulation class.
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Citations
6 Claims
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1. A base station apparatus which conducts a packet communication with a wireless communication terminal comprising:
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a retransmission request detection unit which detects a retransmission request from the wireless communication terminal; a bandwidth assignment unit which assigns a communication bandwidth applied to the packet communication; a modulation class calculation portion, based on both bandwidth information regarding the bandwidth assigned by the bandwidth assignment unit and a data amount of packets corresponding to the retransmission request, calculates a modulation class applied to a retransmission in order to adjust a number of retransmitted packets to be the same as a number of previously transmitted packets; a modulation class determination unit which determines whether or not the modulation class is lower than a modulation class applied to a previous packet transmission; and a retransmission unit which retransmits packets corresponding to the retransmission request based on the determination result regarding the modulation class. - View Dependent Claims (2, 3, 4, 5)
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6. A wireless communication method in which a base station apparatus conducts a packet communication with a wireless communication terminal comprising:
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a retransmission request detection step of detecting a retransmission request from the wireless communication terminal; a bandwidth assignment step of assigning a communication bandwidth applied to the packet communication; a modulation class calculation step of, based on both bandwidth information regarding the bandwidth assigned by the bandwidth assignment unit and a data amount of packets corresponding to the retransmission request, calculating a modulation class applied to a retransmission in order to adjust a number of retransmitted packets to be the same as a number of previously transmitted packets; a modulation class determination step of determining whether or not the modulation class is lower than a modulation class applied to a previous packet transmission; and a retransmission step of retransmitting packets corresponding to the retransmission request based on the determination result regarding the modulation class.
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Specification