Method and apparatus for defining transceiving timing of a physical channel in a tdd communication system which supports cross-carrier scheduling
AssigneeSamsung Electronics Co., Ltd.
InventorsYoung Bum Kim, Joon Young Cho, Jin Kyu Han, Seung Hoon Choi, Youn Sun Kim, Hyoung Ju Ji
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Abstract
The present invention relates to a method for defining, in a TDD wireless communication system in which broadband is configured by means of carrier aggregation, transceiving timing for a data channel and a control channel when cross-carrier scheduling is implemented.
Claims36
A physical channel transmission/reception method of a base station in a TDD radio communication system securing broad bandwidth through carrier aggregation when aggregated carriers are configured with different TDD uplink-downlink configurations, comprising:
- a first transmission step of transmitting, when cross-carrier scheduling is determined, a downlink control channel on a first component carrier;
- and
- a second transmission step of transmitting a downlink control channel on a second component carrier according to a transmission timing rule predetermined between the downlink control and data channels.
A physical channel transmission/reception method of a terminal in a TDD radio communication system securing broad bandwidth through carrier aggregation when aggregated carriers are configured with different TDD uplink-downlink configurations, comprising:
- a first reception step of receiving, when cross-carrier scheduling is determined, a downlink control channel on a first component carrier;
- and
- a second reception step of receiving a downlink data channel scheduled by the downlink control channel on a second component carrier according to a transmission timing rule predetermined between downlink control channel and the downlink data channel.
A base station for transmitting/receiving physical channels in a TDD radio communication system securing broad bandwidth through carrier aggregation when aggregated carriers are configured with different TDD uplink-downlink configurations, comprising:
- a transceiver which transmits/receives at least one physical channel;
- and
- a carrier aggregation and timing controller which controls transmitting, when cross-carrier scheduling is determined, a downlink control channel on a first component carrier and transmitting a downlink control channel on a second component carrier according to a transmission timing rule predetermined between the downlink control and data channels.
A terminal for transmitting/receiving physical channels terminal in a TDD radio communication system securing broad bandwidth through carrier aggregation when aggregated carriers are configured with different TDD uplink-downlink configurations, comprising:
- a transceiver which transmits/receives at least one physical channel;
- and
- a carrier aggregation and timing controller which controls receiving, when cross-carrier scheduling is determined, a downlink control channel on a first component carrier and receiving a downlink data channel scheduled by the downlink control channel on a second component carrier according to a transmission timing rule predetermined between downlink control channel and the downlink data channel.
A physical channel transmission/reception method of a base station in a TDD radio communication system securing broad bandwidth through carrier aggregation when aggregated carriers are configured with different TDD uplink-downlink configurations, comprising:
- a step of transmitting, when cross-carrier scheduling is determined, a downlink control channel at a certain subframe of a first component carrier;
- and
- a step of receiving uplink data channel scheduled by the downlink control channel at an uplink subframe of a second component carrier which arrives first after at least j subframes since the subframe carried the downlink control channel.
A physical channel transmission/reception method of a terminal in a TDD radio communication system securing broad bandwidth through carrier aggregation when aggregated carriers are configured with different TDD uplink-downlink configurations, comprising:
- a step of receiving, when cross-carrier scheduling is determined, a downlink control channel at a certain subframe of a first component carrier;
- and
- a step of transmitting an uplink data channel scheduled by the downlink control channel at an uplink subframe of a second component carrier which arrives first after at least j subframes since the subframe carried the downlink control channel.
A physical channel transmission/reception method of a base station in a TDD radio communication system securing broad bandwidth through carrier aggregation when aggregated carriers are configured with different TDD uplink-downlink configurations, comprising steps of:
- transmitting, when cross-carrier scheduling is determined, a downlink control channel at a certain subframe of a first component carrier;
- and
- receiving an uplink data channel scheduled by the downlink control channel at an uplink subframe of the second component carrier,
- wherein the downlink control channel is transmitted at a subframe nearest to the subframe carrying the uplink data channel among the downlink subframes of the first component carrier before at least j subframes preceding the subframe of the second component carrier at which the downlink data channel is received.
A physical channel transmission/reception method of a terminal in a TDD radio communication system securing broad bandwidth through carrier aggregation when aggregated carriers are configured with different TDD uplink-downlink configurations, comprising steps of:
- receiving, when cross-carrier scheduling is determined, a downlink control channel at a certain subframe of a first component carrier;
- and
- transmitting an uplink data channel scheduled by the downlink control channel at an uplink subframe of a second component carrier,
- wherein the downlink control channel is received at a subframe nearest to the subframe carried the uplink data channel among the downlink subframes of the first component carrier before at least j subframe preceding the subframe of the second component carrier at which the uplink data channel is received.
A base station for transmitting/receiving physical channels in a TDD radio communication system securing broad bandwidth through carrier aggregation when aggregated carriers are configured with different TDD uplink-downlink configurations, comprising:
- a transceiver which transmits/receives at least one physical channel;
- and
- a carrier aggregation and timing controller which controls transmitting, when cross-carrier scheduling is determined, a downlink control channel on a first component carrier and receiving uplink data channel scheduled by the downlink control channel at an uplink subframe of a second component carrier which arrives first after at least j subframes since the subframe carried the downlink control channel.
A terminal for transmitting/receiving physical channels in a TDD radio communication system securing broad bandwidth through carrier aggregation when aggregated carriers are configured with different TDD uplink-downlink configurations, comprising:
- a transceiver which transmits/receives at least one physical channel;
- and
- a carrier aggregation and timing controller which controls receiving, when cross-carrier scheduling is determined, a downlink control channel at a certain subframe of a first component carrier and transmitting an uplink data channel scheduled by the downlink control channel at an uplink subframe of a second component carrier which arrives first after at least j subframes since the subframe carried the downlink control channel.
A base station for transmitting/receiving physical channels in a TDD radio communication system securing broad bandwidth through carrier aggregation when aggregated carriers are configured with different TDD uplink-downlink configurations, comprising:
- a transceiver which transmits/receives at least one physical channel;
- and
- a carrier aggregation and timing controller which controls transmitting, when cross-carrier scheduling is determined, a downlink control channel at a certain subframe of a first component carrier and receiving an uplink data channel scheduled by the downlink control channel at an uplink subframe of the second component carrier,
- wherein the downlink control channel is transmitted at a subframe nearest to the subframe carrying the uplink data channel among the downlink subframes of the first component carrier before at least j subframes preceding the subframe of the second component carrier at which the downlink data channel is received.
A terminal for transmitting/receiving physical channels in a TDD radio communication system securing broad bandwidth through carrier aggregation when aggregated carriers are configured with different TDD uplink-downlink configurations, comprising:
- a transceiver which transmits/receives at least one physical channel;
- and
- a carrier aggregation and timing controller which controls receiving, when cross-carrier scheduling is determined, a downlink control channel at a certain subframe of a first component carrier and transmitting an uplink data channel scheduled by the downlink control channel at an uplink subframe of a second component carrier,
- wherein the downlink control channel is received at a subframe nearest to the subframe carried the uplink data channel among the downlink subframes of the first component carrier before at least j subframe preceding the subframe of the second component carrier at which the uplink data channel is received.
Dependencies are inferred from the claim text.