Method and apparatus for selecting a transmission mode based upon packet size in a multiple antenna communication system
First Claim
1. A transmission method in a multiple antenna communication system, said method comprising the step of:
- selecting a transmission mode based on a length of at least a portion of one or more packets to be transmitted.
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Accused Products
Abstract
A method and apparatus are provided for selecting a transmission mode based upon a length of at least a portion of a packet to be transmitted. A packet is transmitted in a multiple antenna communication system by selecting a transmission mode based on a length of at least a portion of the packet. The transmission mode can indicate a number of antennas or date rate (or both) to be used for the transmission. A transmission mode can also be selected based on, for example, (i) a mode selection table that records an expected transmission time for a packet for each supported transmission mode or (ii) one or more packet length thresholds each having a corresponding transmission mode. ACK (acknowledgment) packets can be transmitted using a predefined transmission mode, such as a SISO mode (or a lower order MIMO mode than the original packet), or based on a predefined relationship between the transmission mode of the original packet and the corresponding transmission mode that should be used to acknowledge the packet.
100 Citations
40 Claims
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1. A transmission method in a multiple antenna communication system, said method comprising the step of:
selecting a transmission mode based on a length of at least a portion of one or more packets to be transmitted. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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17. A transceiver for transmitting a packet in a multiple antenna communication system, said transceiver comprising:
a transmission mode selector that selects a transmission mode based on a length of at least a portion of said packet. - View Dependent Claims (18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35)
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36. A transceiver for transmitting a plurality of packets over a plurality of antennas at substantially the same time over substantially the same frequency band, comprising:
a transmission mode selector that selects between at least two transmission modes, wherein in the first transmission mode the transceiver transmits said plurality of packets over N antennas at a data rate, R, and wherein in the second transmission mode the transceiver transmits said plurality of packets using at least one of (i) a number of antennas less than N, and (ii) a data rate less than R. - View Dependent Claims (37, 38, 39, 40)
Specification