Flexible time division duplex method and apparatus for communication system
First Claim
1. A communication method by a base station supporting time division duplex (TDD), the method comprising:
- transmitting, to a terminal, information indicating at least one subframe in a radio frame using radio resource control (RRC) signaling, wherein the indicated at least one subframe is configured for the terminal to monitor downlink control channel;
transmitting, to the terminal, first downlink control information in a first downlink control channel of a first subframe which is identified based on the information. wherein the first subframe corresponds to one among the at least one subframe; and
transmitting, to the terminal, downlink data in a downlink data channel of a second subframe and second downlink control information in a second downlink control channel of the second subframe, wherein the second subframe is identified as a downlink subframe based on the downlink control channel transmitted in the first subframe.
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Accused Products
Abstract
A flexible Time Division Duplex (TDD) method and apparatus is provided for improving efficiency of communication system. A communication method of a base station supporting TDD includes transmitting, to a terminal, first information including at least one of a flag indicating whether flexible subframes are used and an indicator indicating a candidate flexible subframe set to an uplink subframe; transmitting, to the terminal, second information including a switch flag indicating whether to use the candidate flexible subframe as a downlink subframe; and transmitting, to the terminal, when the candidate flexible subframe is indicated to be used as the downlink subframe, the candidate flexible subframe as the downlink subframe.
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Citations
18 Claims
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1. A communication method by a base station supporting time division duplex (TDD), the method comprising:
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transmitting, to a terminal, information indicating at least one subframe in a radio frame using radio resource control (RRC) signaling, wherein the indicated at least one subframe is configured for the terminal to monitor downlink control channel; transmitting, to the terminal, first downlink control information in a first downlink control channel of a first subframe which is identified based on the information. wherein the first subframe corresponds to one among the at least one subframe; and transmitting, to the terminal, downlink data in a downlink data channel of a second subframe and second downlink control information in a second downlink control channel of the second subframe, wherein the second subframe is identified as a downlink subframe based on the downlink control channel transmitted in the first subframe. - View Dependent Claims (2, 3, 4, 5)
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6. A communication method by a terminal supporting time division duplex (TDD), the method comprising:
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receiving, from a base station, information indicating at least one subframe in a radio frame in a radio resource control (RRC) signaling, wherein the indicated at least one subframe is configured for monitoring downlink control channel; receiving, from the base station, first downlink control information in a first downlink control channel of a first subframe which is identified based on the information, wherein the first subframe corresponds to one among the at least one subframe; and receiving, from the base station, downlink data in a downlink data channel of a second subframe and second downlink control information in a second downlink control channel of the second subframe, wherein the second subframe is identified as a downlink based on the downlink control channel received in the first subframe. - View Dependent Claims (7, 8, 9)
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10. A communication apparatus of a base station supporting Time Division Duplex (TDD), the apparatus comprising:
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a transceiver configured to transmit and receive signals; and a controller coupled with the transceiver and configured to; transmit, to a terminal, information indicating at least one subframe in a radio frame in a radio resource control (RRC) signaling, wherein the indicated at least one subframe is configured for monitoring downlink control channel; transmit, to the terminal, first downlink control information in a first downlink control channel of a first subframe which is identified based on the information, wherein the first subframe corresponds to one among the at least one subframe; transmit, to the terminal, downlink data in a downlink data channel of a second subframe and second downlink control information in a second downlink control channel of the second subframe, wherein the second subframe is identified as a downlink subframe based on the downlink control information transmitted on the first subframe. - View Dependent Claims (11, 12, 13, 14)
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15. A communication apparatus of a terminal supporting time division duplex (TDD), the apparatus comprising:
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a transceiver configured to transmit and receive signals; and a controller coupled with the transceiver and configured to; receive, from a base station, information indicating at least one subframe in a radio frame for monitoring downlink control channel; receive, from the base station, first downlink control information in a first downlink control channel of a first subframe which is identified based on the information, wherein the first subframe corresponds to one among the at least one subframe; and receive, from the base station, downlink data in a downlink data channel of a second subframe and second downlink control information in a second downlink control channel of the second subframe, wherein the second subframe is identified as a downlink subframe based on the downlink control channel received on the first subframe. - View Dependent Claims (16, 17, 18)
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Specification