Channel characterization and training within multiple user, multiple access, and/or MIMO wireless communications
First Claim
1. An apparatus, comprising:
- a baseband processing module for generating a multi-cast sounding frame, the multi-cast sounding frame includes a sounding feedback instruction; and
a plurality of antennae for transmitting the multi-cast sounding frame, and, in response to the multi-cast sounding frame, for receiving a plurality of sounding feedback signals based upon an order according to the sounding feedback instruction, the order configured to accommodate a feedback exchange interruption;
based on the plurality of sounding feedback signals, the baseband processing module generating a multi-user packet; and
the plurality of antennae transmitting the multi-user packet.
7 Assignments
0 Petitions
Accused Products
Abstract
Channel characterization and training within multiple user, multiple access, and/or MIMO wireless communications. Within such communication systems, there can be a number of devices (e.g., STAs) that communicate with a single device (e.g., AP). A multi-cast sounding frame may be transmitted from a transmitting device to a number of receiving devices. Appropriate scheduling or ordering of feedback signals from some or all of the receiving devices may be performed explicitly (e.g., sounding frame sent from the transmitting device to a receiving device) or implicitly (e.g., control information sent from the transmitting device to the receiving device, sounding frame sent to the transmitting device from the receiving device). Such characterization and training is with respect to a channel or path in which data will subsequently follow. Such characterization and training can be performed in accordance with group membership (e.g., with respect to only some of the receiving devices).
8 Citations
20 Claims
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1. An apparatus, comprising:
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a baseband processing module for generating a multi-cast sounding frame, the multi-cast sounding frame includes a sounding feedback instruction; and a plurality of antennae for transmitting the multi-cast sounding frame, and, in response to the multi-cast sounding frame, for receiving a plurality of sounding feedback signals based upon an order according to the sounding feedback instruction, the order configured to accommodate a feedback exchange interruption; based on the plurality of sounding feedback signals, the baseband processing module generating a multi-user packet; and the plurality of antennae transmitting the multi-user packet. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. An apparatus, comprising:
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a baseband processing module for generating a multi-cast sounding frame; and a plurality of antennae for transmitting the multi-cast sounding frame, the multi-cast sounding frame including a plurality of sounding feedback instructions corresponding respectively to at least some of a plurality of wireless communication devices, and, in response to the multi-cast sounding frame, for receiving a plurality of sounding feedback signals from the at least some of the plurality of wireless communication devices based upon an order according to the plurality of sounding feedback instructions by which the plurality of sounding feedback signals are provided, the order configured to accommodate a feedback exchange interruption; based on the plurality of sounding feedback signals, the baseband processing module generating a multi-user packet; the plurality of antennae transmitting the multi-user packet to the at least some of the plurality of wireless communication devices; and the multi-user packet including a plurality of acknowledgement instructions corresponding respectively to the at least some of the plurality of wireless communication devices. - View Dependent Claims (11, 12, 13, 14)
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15. A method for operating a wireless communication device, the method comprising:
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generating a multi-cast sounding frame, which includes a sounding feedback instruction; transmitting the multi-cast sounding frame; in response to the multi-cast sounding frame, receiving a plurality of sounding feedback signals based upon an order according to the sounding feedback instruction by which the plurality of sounding feedback signals are provided, the order configured to accommodate a feedback exchange interruption; based on the plurality of sounding feedback signals, generating a multi-user packet; and transmitting the multi-user packet. - View Dependent Claims (16, 17, 18, 19, 20)
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Specification