Method for transmitting and receiving control information of a mobile communication system
DCFirst Claim
1. A communication method, comprising:
- receiving, by a terminal, a first message;
deciding, by the terminal using the first message, to monitor an enhanced physical downlink control channel (ePDCCH) in a first subframe, wherein the first subframe consists of resource elements arranged in frequency and time domain, the first subframe consists of a first region of resource elements and a second region of resource elements, each of the resource elements in the first region precedes each of the resource elements in the second region in time domain, the first region includes a physical downlink control channel (PDCCH), and the second region includes a physical downlink shared channel for data transmission;
determining, by the terminal, a location of a search space for the ePDCCH in the second region at least based on an identifier of the terminal; and
obtaining, by the terminal, the ePDCCH at least based on the location of the search space.
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Abstract
The method for transmitting control information in a mobile communication system includes: determining a control channel resource for transmitting control information by means of the data channel region; and transmitting the control information using the determined control channel resource. A capacity for control information, which increases for multiple user multiple-input multiple-out (MIMOs) in a heterogeneous network environment, for heterogeneous network interference control using carrier aggregation, for frequent use of a multicast-broadcast single frequency network (MBSFN) subframe, and for a CoMP transmission control, may be satisfied. Further, an adaptive resource allocation based on a requested capacity for control information may be enabled, and the efficient utilization of resources may also be enabled.
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Citations
18 Claims
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1. A communication method, comprising:
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receiving, by a terminal, a first message; deciding, by the terminal using the first message, to monitor an enhanced physical downlink control channel (ePDCCH) in a first subframe, wherein the first subframe consists of resource elements arranged in frequency and time domain, the first subframe consists of a first region of resource elements and a second region of resource elements, each of the resource elements in the first region precedes each of the resource elements in the second region in time domain, the first region includes a physical downlink control channel (PDCCH), and the second region includes a physical downlink shared channel for data transmission; determining, by the terminal, a location of a search space for the ePDCCH in the second region at least based on an identifier of the terminal; and obtaining, by the terminal, the ePDCCH at least based on the location of the search space. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A terminal, comprising:
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a memory; and a processor operably coupled to the memory, wherein the processor, when executing program instructions stored in the memory, is configured to; cause the terminal to receive a first message; decide, using the first message, to monitor an enhanced physical downlink control channel (ePDCCH) in a first subframe, wherein the first subframe consists of resource elements arranged in frequency and time domain, the first subframe consists of a first region of resource elements and a second region of resource elements, each of the resource elements in the first region precedes each of the resource elements in the second region in time domain, the first region includes a physical downlink control channel (PDCCH), and the second region includes a physical downlink shared channel for data transmission; determine a location of a search space for the ePDCCH in the second region at least based on an identifier of the terminal; and cause the terminal to obtain the ePDCCH at least based on the location of the search space. - View Dependent Claims (8, 9, 10, 11, 12)
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13. A communication device for a terminal, comprising:
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a memory; and a processor operably coupled to the memory, wherein the processor, when executing program instructions stored in the memory, is configured to; cause the terminal to receive a first message; decide, using the first message, to monitor an enhanced physical downlink control channel (ePDCCH) in a first subframe, wherein the first subframe consists of resource elements arranged in frequency and time domain, the first subframe consists of a first region of resource elements and a second region of resource elements, each of the resource elements in the first region precedes each of the resource elements in the second region in time domain, the first region includes a physical downlink control channel (PDCCH), and the second region includes a physical downlink shared channel for data transmission; determine a location of a search space for the ePDCCH in the second region at least based on an identifier of the terminal; and cause the terminal to obtain the ePDCCH at least based on the location of the search space. - View Dependent Claims (14, 15, 16, 17, 18)
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Specification