Multi-user multiple input multiple ouput systems
AssigneeIntel IP Corporation
InventorsHua LI, Yuan ZHU, Andrey CHERVYAKOV
Life of this patent
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Abstract
Embodiments can relate to transmitting or processing a demodulation reference signal; the method comprising generating a demodulation reference signal, spreading an instance of the demodulation reference signal using OCC-2 for a transmission associated antenna port 7, spreading an instance of the demodulation reference signal using OCC-4 for a transmission associated antenna port 11, and co-scheduling transmission or output of the spread instances of the demodulation reference signals.
Claims25
1-34. (canceled)
Machine readable storage storing machine executable instructions arranged, when executed by one or more processors, to process a demodulation reference signal;
- the instructions comprising instructions to:
- process a demodulation reference signal spread using a respective orthogonal cover code of respective length associated with antenna port 7 of a physical downlink shared channel, process a co-scheduled demodulation reference signal spread using an associated orthogonal cover code of a prescribed associated with antenna port 11 of the physical downlink shared channel;
- and
- despread at least one of
- the demodulation reference signal spread using said respective orthogonal cover code of said respective length to recover the demodulation reference signal, or
- the co-scheduled demodulation reference signal spread using said associated orthogonal cover code of said prescribed length to recover the demodulation reference signal.
Machine readable storage storing machine executable instructions arranged, when executed by one or more processors, to process a demodulation reference signal;
- the instructions comprising instructions to:
- process a demodulation reference signal spread using a respective orthogonal cover code of a respective length associated with antenna port 8 of a physical downlink shared channel,
- process a co-scheduled demodulation reference signal spread using an associated orthogonal cover code of a prescribed length associated with antenna port 13 of a physical downlink shared channel;
- and
- despread at least one of
- the demodulation reference signal spread using said respective orthogonal cover code of said respective length to recover the demodulation reference signal, or
- the co-scheduled demodulation reference signal spread using said associated orthogonal cover code of said prescribed length to recover the demodulation reference signal.
An apparatus for a base station to co-schedule demodulation reference signals;
- the apparatus comprising
- generator circuitry to generate a demodulation reference signal,
- spreader circuitry to spread an instance of the demodulation reference signal using a prescribed orthogonal cover code of a prescribed length for transmission via antenna port 7,
- spreader circuitry to spread an instance of the demodulation reference signal using a further orthogonal cover code of a further prescribed length for transmission via antenna port 11, and
- a scheduler to co-schedule transmission of the spread instances of the demodulation reference signals.
An apparatus for a base station to co-schedule demodulation reference signals;
- the apparatus comprising
- generator circuitry to generate a demodulation reference signal,
- spreader circuitry to spread an instance of the demodulation reference signal using a prescribed orthogonal cover code of a prescribed length for transmission via antenna port 8,
- spreader circuitry to spread an instance of the demodulation reference signal using a further orthogonal cover code of a further prescribed length for transmission via antenna port 13, and
- a scheduler to co-schedule transmission of the spread instances of the demodulation reference signals.
Dependencies are inferred from the claim text.