Auxiliary FL MIMO pilot transmission in 1XEV-DO
First Claim
1. A method of providing auxiliary pilots for transmission from a base station in a wireless communication system with MIMO and non-MIMO users, comprising:
- allocating a portion of total available data transmission power for transmission of at least one auxiliary multiple-input, multiple-output(MIMO) pilot during a data segment in a transmission time slot; and
transmitting the at least one auxiliary MIMO pilot simultaneously with a primary pilot to both the MIMO and the non-MIMO users on one or more unused Walsh codes during the transmission time slot, wherein the at least one auxiliary MIMO pilot only supports the MIMO users in the wireless communication system.
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Accused Products
Abstract
Systems and methodologies are described that facilitate providing auxiliary multiple-input, multiple-output (MIMO) pilot signals to MIMO user devices in a wireless communication environment. According to some aspects, a portion of data transmission power may be reallocated for auxiliary MIMO pilot transmission during a data segment in a time slot, in order to permit a MIMO user device to perform CQI and rank prediction. Additionally or alternatively, non-MIMO pilot transmission power may be reallocated in a pilot segment in the time slot for transmission of an auxiliary MIMO pilot signal to permit the MIMO user device to demodulate data transmitted in data segments of the time slot. MIMO pilot signals may additionally be time-division multiplexed within or across time slots and may be transmitted over available Walsh codes in data and control segments.
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Citations
27 Claims
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1. A method of providing auxiliary pilots for transmission from a base station in a wireless communication system with MIMO and non-MIMO users, comprising:
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allocating a portion of total available data transmission power for transmission of at least one auxiliary multiple-input, multiple-output(MIMO) pilot during a data segment in a transmission time slot; and transmitting the at least one auxiliary MIMO pilot simultaneously with a primary pilot to both the MIMO and the non-MIMO users on one or more unused Walsh codes during the transmission time slot, wherein the at least one auxiliary MIMO pilot only supports the MIMO users in the wireless communication system. - View Dependent Claims (2, 3, 4, 5, 6)
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7. An apparatus that facilitates providing auxiliary multiple-input, multiple-output(MIMO) pilots for transmission from a base station in a wireless communication system with MIMO and non-MIMO users, comprising:
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a processor that allocates a portion of total available data transmission power for transmission of at least one auxiliary MIMO pilot signal during a data segment in a transmission time slot; and a transmitter that transmits the at least one auxiliary MIMO pilot signal simultaneously with a primary pilot to both the MIMO and the non-MIMO users on one or more unused Walsh codes during the transmission time slot, wherein the at least one auxiliary MIMO pilot only supports the MIMO users in the wireless communication system. - View Dependent Claims (8, 9, 10, 11, 12)
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13. A wireless communication apparatus in a wireless communication system with MIMO and non-MIMO users, comprising:
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means for allocating a portion of total available data transmission power for transmission of an auxiliary multiple-input, multiple-output(MIMO) pilot during a data segment in a transmission time slot; means for time-division multiplexing auxiliary MIMO pilots; and means for transmitting the auxiliary MIMO pilot simultaneously with a primary pilot to both the MIMO and the non-MIMO users on one or more unused Walsh codes during the transmission time slot, wherein the auxiliary MIMO pilot only supports the MIMO users in the wireless communication system. - View Dependent Claims (14, 15, 16, 17)
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18. A non-transitory computer-readable medium that stores computer-executable instructions for providing auxiliary MIMO pilots in a wireless communication system with MIMO and non-MIMO users, the computer-executable instructions for:
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allocating a portion of total available data transmission power for transmission of an auxiliary multiple-input, multiple-output(MIMO) pilot during a data segment in a transmission time slot; time-division multiplexing auxiliary MIMO pilots; and transmitting the auxiliary MIMO pilot simultaneously with a primary pilot to both the MIMO and the non-MIMO users on one or more unused Walsh codes during the transmission time slot, wherein the auxiliary MIMO pilot only supports the MIMO users in the wireless communication system. - View Dependent Claims (19, 20, 21, 22)
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23. A processor that executes computer-executable instructions for providing auxiliary MIMO pilots from a base station in a wireless communication system with MIMO and non-MIMO users, the instructions comprising:
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allocating a portion of total available data transmission power for transmission of an auxiliary multiple-input, multiple-output(MIMO) pilot during a data segment in a transmission time slot; time-division multiplexing the auxiliary MIMO pilot; and transmitting the auxiliary MIMO pilot to both the MIMO and the non-MIMO users on one or more unused Walsh codes during the transmission time slot, wherein the auxiliary MIMO pilot only supports the MIMO users in the wireless communication system. - View Dependent Claims (24, 25, 26, 27)
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Specification