Mode Switching Between SU-MIMO and MU-MIMO
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Accused Products
Abstract
The present invention relates to a method and arrangements in a communication system for Multi User Multiple-Input-Multiple-Output (MU-MIMO) signaling via Multiple-Input-Multiple-Output (MIMO) antennas between a base station and one of a plurality of mobile terminals supporting both Single User and Multi User Multiple-Input-Multiple-Output (SU-MIMO and MU-MIMO) signaling modes. Switching between the modes is supported in the system and the modes have partly shared signaling. SU-MIMO mode signaling which is redundant, i.e. not needed, for MU-MIMO mode signaling is identified. Bits, i.e. data bits, of the identified redundant signaling is re-interpreted or re-defined to comprise signaling information associated with MU-MIMO mode. The signaling information associated with MU-MIMO mode is signaled to the mobile terminal by using the reinterpreted redundant bits.
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Citations
32 Claims
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1-16. -16. (canceled)
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17. A method for a base station for Multi User Multiple-Input-Multiple-Output (MU-MIMO) signaling from MIMO antennas of a base station to one of a plurality of mobile terminals of a communication system configured for both Single User MIMO (SU-MIMO) and MU-MIMO signaling modes and configured to switch between said modes, wherein said modes have partly shared signaling, the method comprising:
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identifying SU-MIMO signaling, which is redundant for the MU-MIMO mode, and reinterpreting bits of said redundant signaling to comprise signaling information associated with MU-MIMO mode; informing the mobile terminal via signaling about the reinterpretation of the redundant bits; and signaling information associated with MU-MIMO mode by using said reinterpreted redundant bits. - View Dependent Claims (18, 19, 20, 21, 22)
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23. A radio base station in a communication system comprising Multiple-Input-Multiple-Output (MIMO) antennas for signaling to one of a plurality of mobile terminals and configured for both Single User MIMO (SU-MIMO) and Multi User MIMO (MU-MIMO) signaling modes, wherein said base station comprises:
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a controller for switching between said modes, said modes having partly shared signaling; and a processor for identifying SU-MIMO mode signaling which is redundant for MU-MIMO mode, and for reinterpreting bits of said redundant signaling to comprise signaling information associated with MU-MIMO mode; and a transmitter for informing the UE about the reinterpretation of the redundant bits and signaling information associated with MU-MIMO mode by using said reinterpreted redundant bits. - View Dependent Claims (24, 25, 26, 27)
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28. A mobile terminal comprising Multiple-Input-Multiple-Output (MIMO) antennas configured for both Single User MIMO (SU-MIMO) and Multi User MIMO (MU-MIMO) signaling modes, wherein said mobile terminal comprises:
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a controller for switching between said modes, said modes having partly shared signaling; and a receiver for receiving from the base station information about a reinterpretation of redundant SU-MIMO bits, and signaling information associated with MU-MIMO mode by receiving said reinterpreted redundant bits; and a processor for interpreting said reinterpreted redundant bits by using the information about the reinterpretation of redundant SU-MIMO bits. - View Dependent Claims (29, 30, 31, 32)
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Specification