Method of transmitting and receiving control information based on spatial-multiplexing gain
First Claim
1. A transmission method, comprising:
- transmitting, to terminals supported by an enhanced system, a group terminal identifier of the terminals;
allocating resource blocks (RBs) to at least one data stream transmitted via an enhanced-physical downlink shared channel (E-PDSCH);
generating control information for each of the RBs;
allocating the control information for each of the RBs to a resource region for an enhanced-physical downlink control channel (E-PDCCH); and
performing beamforming, or spatial-multiplexing, or beamforming-based spatial-multiplexing, of the control information for each of the RBs, based on the resource region,wherein a type 1 terminal succeeds in decoding the control information received via the E-PDCCH, and a type 2 terminal does not decode, or fails in decoding, the control information received via the E-PDCCH, and is supported by a different type of system than the type 1 terminal.
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Accused Products
Abstract
A control information transmission and reception method based on a spatial-multiplexing gain, are provided. The control information may be transmitted by obtaining the spatial-multiplexing gain using an E-PDCCH region, and thus, a transmission efficiency of the control information may be improved. The common control information used for decoding the E-PDCCH may be transmitted via a PDCCH, and thus, a base station supporting both a general terminal and an enhanced terminal may effectively transmit the control information. Information associated with an indicator indicating whether the E-PDCCH is to be used during a subsequent resource allocation period may be transmitted, and thus, whether decoding with respect to the E-PDCCH is to be performed during the subsequent allocation period may be determined.
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Citations
19 Claims
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1. A transmission method, comprising:
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transmitting, to terminals supported by an enhanced system, a group terminal identifier of the terminals; allocating resource blocks (RBs) to at least one data stream transmitted via an enhanced-physical downlink shared channel (E-PDSCH); generating control information for each of the RBs; allocating the control information for each of the RBs to a resource region for an enhanced-physical downlink control channel (E-PDCCH); and performing beamforming, or spatial-multiplexing, or beamforming-based spatial-multiplexing, of the control information for each of the RBs, based on the resource region, wherein a type 1 terminal succeeds in decoding the control information received via the E-PDCCH, and a type 2 terminal does not decode, or fails in decoding, the control information received via the E-PDCCH, and is supported by a different type of system than the type 1 terminal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 16, 17, 18, 19)
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15. A transmitter, comprising:
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a transmission module configured to transmit, to terminals supported by an enhanced system, a group terminal identifier of the terminals; a scheduler configured to allocate resource blocks (RBs) to at least one data stream transmitted via an enhanced-physical downlink shared channel (E-PDSCH), generate control information for each of the RBs, and allocate the control information for each of the RBs to a resource region for an enhanced-physical downlink control channel (E-PDCCH); and a spatial-multiplexer configured to perform beamforming, or spatial-multiplexing, or beamforming-based spatial-multiplexing, of the control information for each of the RBs, based on the resource region, wherein a type 1 terminal succeeds in decoding the control information received via the E-PDCCH, and a type 2 terminal does not decode, or fails in decoding, the control information received via the E-PDCCH, and is supported by a different type of system than the type 1 terminal.
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Specification