Selective virtual antenna transmission
First Claim
1. An apparatus comprising:
- at least one processor configured to select at least one virtual antenna from among multiple virtual antennas formed with multiple physical antennas and to provide an indication of use of the at least one selected virtual antenna for data transmission, wherein each virtual antenna is mapped to some or all physical antennas by a different mapping, wherein the at least one processor is also configured to determine an overall rate for each different set of at least one virtual antenna and to select at least one rate for the at least one selected virtual antenna based on signal quality for the at least one selected virtual antenna; and
a memory coupled to the at least one processor.
2 Assignments
0 Petitions
Accused Products
Abstract
Techniques for transmitting data from virtual antennas instead of physical antennas are described. Each virtual antenna may be mapped to some or all physical antennas by a different mapping. The performance of different sets of at least one virtual antenna is evaluated based on one or more metrics such as signal quality, throughput, overall rate, and so on. The virtual antenna set with the best performance is selected for use. If the virtual antenna selection is performed by the receiver, then channel state information for the selected virtual antenna set may be sent to the transmitter. The channel state information may convey the selected virtual antenna(s), the signal quality or rate(s) for the selected virtual antenna(s), one or more preceding matrices used to form the selected virtual antenna(s), and so on. The transmitter and/or receiver use the selected virtual antenna(s) for data transmission.
-
Citations
42 Claims
-
1. An apparatus comprising:
-
at least one processor configured to select at least one virtual antenna from among multiple virtual antennas formed with multiple physical antennas and to provide an indication of use of the at least one selected virtual antenna for data transmission, wherein each virtual antenna is mapped to some or all physical antennas by a different mapping, wherein the at least one processor is also configured to determine an overall rate for each different set of at least one virtual antenna and to select at least one rate for the at least one selected virtual antenna based on signal quality for the at least one selected virtual antenna; and a memory coupled to the at least one processor. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
-
-
16. An apparatus comprising:
-
at least one processor configured to select at least one virtual antenna from among multiple virtual antennas formed with multiple physical antennas and to provide an indication of use of the at least one selected virtual antenna for data transmission, wherein the at least one processor is configured to send channel state information for the at least one selected virtual antenna to a transmitter and to receive the data transmission from the transmitter via the at least one selected virtual antenna, wherein the channel state information indicates a base signal quality and at least one delta signal quality, wherein the base signal quality is for one selected virtual antenna or one data stream, and wherein the at least one delta signal quality is for remaining selected virtual antennas or remaining data streams, wherein the at least one processor is also configured to determine an overall rate for each different set of at least one virtual antenna and to select at least one rate for the at least one selected virtual antenna based on the base signal quality and the delta signal quality for the at least one selected virtual antenna; and a memory coupled to the at least one processor.
-
-
17. A method for wireless communications, wherein the method is performed by a network entity, the method comprising:
-
selecting at least one virtual antenna from among multiple virtual antennas formed with multiple physical antennas, wherein each virtual antenna is mapped to some or all physical antennas by a different mapping; determining an overall rate for each different set of at least one virtual antenna; selecting at least one rate for the at least one selected virtual antenna based on signal quality for the at least one selected virtual antenna; and providing an indication of the at least one selected virtual antenna for use for data transmission. - View Dependent Claims (18, 19, 20, 21)
-
-
22. An apparatus comprising:
-
means for selecting at least one virtual antenna from among multiple virtual antennas formed with multiple physical antennas, wherein each virtual antenna is mapped to some or all physical antennas by a different mapping; means for determining an overall rate for each different set of at least one virtual antenna; means for selecting at least one rate for the at least one selected virtual antenna based on signal quality for the at least one selected virtual antenna; and means for providing an indication of the at least one selected virtual antenna for use for data transmission. - View Dependent Claims (23, 24, 25)
-
-
26. A non-transitory computer-readable medium including processor-executable code for storing instructions operable to:
-
select, by a processor, at least one virtual antenna from among multiple virtual antennas formed with multiple physical antennas, wherein each virtual antenna is mapped to some or all physical antennas by a different mapping; determine an overall rate for each different set of at least one virtual antenna; select at least one rate for the at least one selected virtual antenna based on signal quality for the at least one selected virtual antenna; and use the at least one selected virtual antenna for data transmission.
-
-
27. An apparatus comprising:
-
at least one processor configured to receive channel state information for at least one virtual antenna selected from among multiple virtual antennas formed with multiple physical antennas, and to send data transmission via the at least one selected virtual antenna, wherein each virtual antenna is mapped to some or all physical antennas by a different mapping, wherein the at least one processor is also configured to determine an overall rate for each different set of at least one virtual antenna and to select at least one rate for the at least one selected virtual antenna based on the channel state information for the at least one selected virtual antenna; and a memory coupled to the at least one processor. - View Dependent Claims (28, 29, 30, 31, 32, 33, 34, 35)
-
-
36. A method for wireless communications, wherein the method is performed by a network entity, the method comprising:
-
receiving channel state information for at least one virtual antenna selected from among multiple virtual antennas formed with multiple physical antennas, wherein each virtual antenna is mapped to some or all physical antennas by a different mapping; determining an overall rate for each different set of at least one virtual antenna; selecting at least one rate for the at least one selected virtual antenna based on the channel state information for the at least one selected virtual antenna; and sending data transmission via the at least one selected virtual antenna. - View Dependent Claims (37, 38)
-
-
39. An apparatus comprising:
-
means for receiving channel state information for at least one virtual antenna selected from among multiple virtual antennas formed with multiple physical antennas, wherein each virtual antenna is mapped to some or all physical antennas by a different mapping; means for determining an overall rate for each different set of at least one virtual antenna; means for selecting at least one rate for the at least one selected virtual antenna based on the channel state information for the at least one selected virtual antenna; and means for sending data transmission via the at least one selected virtual antenna. - View Dependent Claims (40, 41)
-
-
42. A non-transitory computer-readable medium including processor-executable code for storing instructions operable to:
-
receive channel state information, by a processor, for at least one virtual antenna selected from among multiple virtual antennas formed with multiple physical antennas, wherein each virtual antenna is mapped to some or all physical antennas by a different mapping; determine an overall rate for each different set of at least one virtual antenna; select at least one rate for the at least one selected virtual antenna based on the channel state information for the at least one selected virtual antenna; and send data transmission via the at least one selected virtual antenna.
-
Specification