Abstract
A method and system are provided for scheduling data transmission in a Multiple-Input Multiple-Output (MIMO) system. The MIMO system may comprise at least one MIMO transmitter and at least one MIMO receiver. Feedback from one or more receivers may be used by a transmitter to improve quality, capacity, and scheduling in MIMO communication systems. The method may include generating or receiving information pertaining to a MIMO channel metric and information pertaining to a Channel Quality Indicator (CQI) in respect of a transmitted signal; and sending a next transmission to a receiver using a MIMO mode selected in accordance with the information pertaining to the MIMO channel metric, and an adaptive coding and modulation selected in accordance with the information pertaining to the CQI.
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4G | 10/06/2008 | ISLD-200807-004 | NORTEL NETWORKS LIMITED | No | Family Member | ||||
4G | 11/02/2013 | ISLD-201301-011 | RESEARCH IN MOTION LTD |
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4G | 19/06/2013 | ISLD-201306-004 | RESEARCH IN MOTION LTD |
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5G | 10/07/2018 | ISLD-201807-048 | BLACKBERRY LTD |
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Specification Information
Specification Information
Technologies
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Technologies
Multiple-Input Multiple-Output(MIMO)/Massive MIMO
Product
User Equipment (UE/Terminal)
Use Cases
Services
Claim
1. A method comprising:
receiving a composite metric specifying a channel quality indicator (CQI) of a multiple-input multiple-output Orthogonal Frequency Division Multiplexing (MIMO-OFDM) channel and a MIMO-OFDM channel indication to a receiver of the composite metric; and scheduling transmission to at least two user terminals based on the received composite metric, wherein the scheduling is orthogonality-based scheduling.
2. The method of claim 1, wherein the composite metric is transmitted using a MIMO-OFDM transmission.
3. The method of claim 1, further comprising transmitting pilot signals corresponding to each of a plurality of antennas using a respective set of OFDM sub-carriers and OFDM symbol durations for each antenna.
4. The method of claim 1, further comprising transmitting data to a user terminal, at least one of a modulation and coding of the data or a MIMO mode of the data being based on the received composite metric.
5. The method of claim 1, further comprising receiving an indication of a MIMO capability, the MIMO capability indicating a rank of the MIMO channel or a number of antennas on a user terminal from which a composite metric is received.
6. A base station comprising:
a receiver configured to receive a composite metric specifying a channel quality indicator (CQI) of a multiple-input multiple-output Orthogonal Frequency Division Multiplexing (MIMO-OFDM) channel and a MIMO-OFDM channel indication to the base station, wherein the base station is configured to schedule transmission to at least two user terminals based on the received composite metric, and wherein the scheduling is orthogonality-based scheduling.
7. The base station of claim 6, wherein the composite metric is transmitted using a MIMO-OFDM transmission.
8. The base station of claim 6, further comprising a transmitter configured to transmit pilot signals corresponding to each of a plurality of antennas using a respective set of OFDM sub-carriers and OFDM symbol durations for each antenna.
9. The base station of claim 6, further comprising a transmitter configured to transmit data to a user terminal, at least one of a modulation and coding of the data or a MIMO mode of the data being based on the received composite metric.
10. The base station of claim 6, wherein the receiver is further configured to receive an indication of a MIMO capability, the MIMO capability indicating a rank of the MIMO channel or a number of antennas on a user terminal from which a composite metric is received.
11. A method comprising:
receiving a composite metric specifying a channel quality indicator (CQI) of a multiple-input multiple-output Orthogonal Frequency Division Multiplexing (MIMO-OFDM) channel and a MIMO-OFDM mode indication to a receiver of the composite metric; and receiving an indication of a MIMO-OFDM capability, the MIMO-OFDM capability indicating a number of antennas on a user terminal from which the composite metric is received.
12. The method of claim 11, wherein the composite metric is transmitted using a MIMO-OFDM transmission.
13. The method of claim 11, further comprising transmitting pilot signals corresponding to each of a plurality of antennas using a respective set of OFDM sub-carriers and OFDM symbol durations for each antenna.
14. The method of claim 11, further comprising transmitting data to the user terminal, at least one of a modulation and coding of the data or a MIMO-OFDM mode of the data being based on the received composite metric, wherein the composite metric comprises at least a first bit specifying the CQI and at least a second bit specifying the MIMO-OFDM mode.
15. A base station comprising:
a receiver configured to receive a composite metric specifying a channel quality indicator (CQI) of a multiple-input multiple-output Orthogonal Frequency Division Multiplexing (MIMO-OFDM) channel and a MIMO-OFDM mode indication to the base station, wherein the receiver is further configured to receive an indication of a MIMO-OFDM capability, the MIMO-OFDM capability indicating a number of antennas on a user terminal from which the composite metric is received.
16. The base station of claim 15, wherein the composite metric is transmitted using a MIMO-OFDM transmission.
17. The base station of claim 15, further comprising a transmitter configured to transmit pilot signals corresponding to each of a plurality of antennas using a respective set of OFDM sub-carriers and OFDM symbol durations for each antenna.
18. The base station of claim 15, further comprising a transmitter configured to transmit data to the user terminal, at least one of a modulation and coding of the data or a MIMO mode of the data being based on the received composite metric, wherein the composite metric comprises at least a first bit specifying the CQI and at least a second bit specifying the MIMO mode.
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Explicitly disclosed patent:openly and comprehensibly describes all details of the invention in the patent document.
Implicitly disclosed patent:does not explicitly state certain aspects of the invention, but still allows for these to be inferred from the information provided.
Basis patent:The core patent in a family, outlining the fundamental invention from which related patents or applications originate.
Family member:related patents or applications that share a common priority or original filing.