Method and system for physical downlink control channel multiplexing
First Claim
1. A method of multiplexing physical downlink control channel and physical downlink data channel in two cases comprising:
- determining uplink (UL and downlink (DL) needs of a plurality of users and generating subframes based on the determined needs, including;
1) cross-interleaving scheduling grants for uplink data transmissions (UL grants) of different users and mapping the cross-interleaved UL grants to entire physical resource blocks containing first and second slots in which no physical downlink data channel is allowed to be transmitted, and wherein downlink control channel and physical downlink data channel for another user are multiplexed using frequency division multiplexing (FDM);
2) mixing scheduling grants for downlink data transmission (DL grant) and for uplink data transmission (UL grant, if it is present) of a single user, and mapping both the DL grant and the UL grant to a first slot of physical resource blocks in which the second slot is allowed to be used for the single user'"'"'s downlink data transmission, wherein downlink control channel and physical downlink data channel for another user are multiplexed using frequency division multiplexing (FDM)+time division multiplexing (TDM).
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Abstract
Enhanced physical downlink control channel are multiplexed with physical downlink data channel in frequency division multiplexing (FDM), or in frequency division multiplexing (FDM)+time division multiplexing (TDM). FDM mode applies to users that have only UL grants in that subframe. UL grants of different users are cross-interleaved and transmitted over the entire physical resource blocks (both slots) in FDM. Frequency resources for cross-interleaved UL grants are distributed. TDM+FDM applies to users that have both DL and UL grants, or have only DL grant in that subframe. DL/UL grant (maybe mixed) is transmitted only in the first slot of physical resource blocks in TDM+FDM, where the second slots in those resource blocks can be used for those users'"'"' downlink data transmission.
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Citations
21 Claims
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1. A method of multiplexing physical downlink control channel and physical downlink data channel in two cases comprising:
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determining uplink (UL and downlink (DL) needs of a plurality of users and generating subframes based on the determined needs, including; 1) cross-interleaving scheduling grants for uplink data transmissions (UL grants) of different users and mapping the cross-interleaved UL grants to entire physical resource blocks containing first and second slots in which no physical downlink data channel is allowed to be transmitted, and wherein downlink control channel and physical downlink data channel for another user are multiplexed using frequency division multiplexing (FDM); 2) mixing scheduling grants for downlink data transmission (DL grant) and for uplink data transmission (UL grant, if it is present) of a single user, and mapping both the DL grant and the UL grant to a first slot of physical resource blocks in which the second slot is allowed to be used for the single user'"'"'s downlink data transmission, wherein downlink control channel and physical downlink data channel for another user are multiplexed using frequency division multiplexing (FDM)+time division multiplexing (TDM). - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. An apparatus for multiplexing physical downlink control channel and physical downlink data channel for a plurality of users comprising:
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a base station configured to generate and transmit subframes containing; first physical resource blocks having a first slot and a second slot in both of which no physical downlink data channel is allowed to be transmitted; second physical resources blocks having a second slot in which physical downlink data channel is allowed to be transmitted; and other resource blocks in which resource multiplexing is used to mix downlink control channel and physical downlink data channel; wherein, in the first physical resource blocks, scheduling grants for uplink data transmissions (UL grants) of different users are mixed using cross-interleaving, and the cross-interleaved grants are mapped to the entire physical resource blocks in the first and the second slots, and wherein the resource multiplexing used in the other resource blocks is frequency division multiplexing (FDM); and wherein, in the second physical resource blocks, scheduling grants for downlink data transmission (DL grant) and for uplink data transmission (UL grant, if it is present) of a single user are mixed and mapped to the first slot, and wherein the resource multiplexing used in the other resource blocks is frequency division multiplexing (FDM)+time division multiplexing (TDM). - View Dependent Claims (9, 10, 11, 12, 13, 14)
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15. A system for multiplexing physical downlink control channel and physical downlink data channel comprising:
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a base station configured to generate and transmit subframes containing; first physical resource blocks having a first slot and a second slot in both of which no physical downlink data channel is allowed to be transmitted; second physical resources blocks having a second slot in which physical downlink data channel is allowed to be transmitted; and other resource blocks in which resource multiplexing is used to mix downlink control channel and physical downlink data channel; wherein, in the first physical resource blocks, scheduling grants for uplink data transmissions (UL grants) of different users are mixed using cross-interleaving, and the cross-interleaved grants are mapped to the entire physical resource blocks in the first and the second slots, and wherein the resource multiplexing used in the other resource blocks is frequency division multiplexing (FDM); and wherein, in the second physical resource blocks, scheduling grants for downlink data transmission (DL grant) and for uplink data transmission (UL grant, if it is present) of a single user are mixed and mapped to the first slot, and wherein the resource multiplexing used in the other resource blocks is frequency division multiplexing (FDM)+time division multiplexing (TDM); and a plurality of users (UEs) each configured to receive and decode the subframes sent by the base station. - View Dependent Claims (16, 17, 18, 19, 20, 21)
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Specification