COOPERATIVE MIMO IN MULTICELL WIRELESS NETWORKS
First Claim
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1. A method comprising:
- employing antenna elements from a plurality of base stations to support joint cooperative multiple-input multiple-output (MIMO) transmissions in a wireless network, wherein the joint cooperative MIMO transmissions are orthogonal frequency division multiple access (OFDMA) MIMO transmissions;
replicating a data stream received from an information source;
forwarding the replication of the data stream to each base station of the plurality of base stations;
performing antenna signal processing operations at each base station of the plurality of base stations on the replication of the data stream it receives to generate antenna signals;
transmitting the antenna signals over selected antenna elements of the antenna elements at each base station of the plurality of base stations to form the joint cooperative MIMO transmissions; and
encoding, at respective base stations of the plurality of base stations, the replication of the data stream using one of space-time coding, space-frequency coding, space-time-frequency coding, and spatial multiplexing to establish the joint cooperative MIMO transmissions.
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Abstract
A method and system for cooperative multiple-input multiple output (MIMO) transmission operations in a multicell wireless network. Under the method, antenna elements from two or more base stations are used to form an augmented MIMO antenna array that is used to transmit and received MIMO transmissions to and from one or more terminals. The cooperative MIMO transmission scheme supports higher dimension space-time-frequency processing for increased capacity and system performance.
35 Citations
37 Claims
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1. A method comprising:
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employing antenna elements from a plurality of base stations to support joint cooperative multiple-input multiple-output (MIMO) transmissions in a wireless network, wherein the joint cooperative MIMO transmissions are orthogonal frequency division multiple access (OFDMA) MIMO transmissions; replicating a data stream received from an information source; forwarding the replication of the data stream to each base station of the plurality of base stations; performing antenna signal processing operations at each base station of the plurality of base stations on the replication of the data stream it receives to generate antenna signals; transmitting the antenna signals over selected antenna elements of the antenna elements at each base station of the plurality of base stations to form the joint cooperative MIMO transmissions; and encoding, at respective base stations of the plurality of base stations, the replication of the data stream using one of space-time coding, space-frequency coding, space-time-frequency coding, and spatial multiplexing to establish the joint cooperative MIMO transmissions. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
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21. A multicell wireless network, comprising:
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a plurality of base stations each associated with a respective cell and having a respective antenna array including at least one antenna element; a joint cooperative multiple-input multiple-output (MIMO) transmission mechanism that employs selected antenna elements from the plurality of base stations to; form an augmented antenna array used to support joint cooperative MIMO transmissions over the wireless network, wherein the joint cooperative MIMO transmissions are orthogonal frequency division multiple access (OFDMA) MIMO transmissions; and encode, at respective base stations of the plurality of base stations, the replication of the data stream using one of space-time coding, space-frequency coding, space-time-frequency coding, and spatial multiplexing to establish the joint cooperative MIMO transmissions; a data replicator to; replicate a data stream received from an information source; and forward the replication of the data stream to each base station of the plurality of base stations; and a set of antenna signal processing components at each base station of the plurality of base stations to perform antenna signal processing operations on the data stream it receives to generate antenna signals, wherein the antenna signals are transmitted over the selected antenna elements to form a joint cooperative MIMO transmission at each base station of the plurality of base stations. - View Dependent Claims (22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37)
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Specification