Method for configuring transmission opportunity section in wireless access system supporting unlicensed band, and device for supporting same
First Claim
1. A method of receiving data from a base station via an unlicensed band by a user equipment (UE) in a wireless access system supporting carrier aggregation (CA) with the unlicensed band, the method comprising:
- receiving transmission opportunity (TxOP) configuration information from the base station, wherein the TxOP configuration information indicates a first TxOP duration and a second TxOP duration, the second TxOP duration is after the first TXOP duration, the first TxOP duration comprising at least one partial subframe shorter than 1 ms;
receiving orthogonal frequency division multiplexing (OFDM) start symbol position information for a start position of a data transmission within the first and second TxOP durations, wherein the start position of the data transmission is determined based on a channel state of the unlicensed band; and
receiving the data via the unlicensed band during one or more subframes based on the OFDM start symbol position information and the TxOP configuration information,wherein the channel state of the unlicensed band is related with whether an idle state starts at a subframe before the one or more subframes or not, andwherein an end of the first TxOP duration equals to an end of a subframe of a primary cell (PCell) of the CA, wherein the PCell is a serving cell configured on a licensed band, and wherein a secondary cell (SCell) of the CA is a serving cell configured on the unlicensed band.
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Accused Products
Abstract
The present invention relates to a wireless access system supporting an unlicensed band, and provides a method for configuring a transmission opportunity (TxOP) section, and devices for supporting the same. The method for configuring a transmission opportunity (TxOP) section in a wireless access system supporting carrier aggregation (CA) with an unlicensed band, in one embodiment of the present invention, comprises the steps of: receiving, by a terminal, TxOP start information for indicating the start of the TxOP section; receiving orthogonal frequency division multiplexing (OFDM) symbol position information for indicating an OFDM symbol starting data transmission and reception in the TxOP section; and transmitting and receiving the data in a subframe (SF) of an S cell indicated by the TxOP start information on the basis of the OFDM symbol position information.
13 Citations
16 Claims
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1. A method of receiving data from a base station via an unlicensed band by a user equipment (UE) in a wireless access system supporting carrier aggregation (CA) with the unlicensed band, the method comprising:
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receiving transmission opportunity (TxOP) configuration information from the base station, wherein the TxOP configuration information indicates a first TxOP duration and a second TxOP duration, the second TxOP duration is after the first TXOP duration, the first TxOP duration comprising at least one partial subframe shorter than 1 ms; receiving orthogonal frequency division multiplexing (OFDM) start symbol position information for a start position of a data transmission within the first and second TxOP durations, wherein the start position of the data transmission is determined based on a channel state of the unlicensed band; and receiving the data via the unlicensed band during one or more subframes based on the OFDM start symbol position information and the TxOP configuration information, wherein the channel state of the unlicensed band is related with whether an idle state starts at a subframe before the one or more subframes or not, and wherein an end of the first TxOP duration equals to an end of a subframe of a primary cell (PCell) of the CA, wherein the PCell is a serving cell configured on a licensed band, and wherein a secondary cell (SCell) of the CA is a serving cell configured on the unlicensed band. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A user equipment (UE) for receiving data from a base station via an unlicensed band in a wireless access system supporting carrier aggregation (CA) with the unlicensed band, the UE comprising:
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a transceiver; and a processor configured to; control the transceiver to support a configuration of a first transmission opportunity (TxOP) duration and a second TxOP duration, the second TxOP duration is after the first TXOP duration, the first TxOP duration comprising at least one partial subframe shorter than 1 ms, control the transceiver to receive TxOP configuration information from the base station, wherein the TxOP configuration information indicates the first TxOP duration and the second TxOP duration, control the transceiver to receive orthogonal frequency division multiplexing (OFDM) start symbol position information for a start position of a data transmission within the first and second TxOP durations, wherein the start position of the data transmission is determined based on a channel state of the unlicensed band, and control the transceiver to receive the data via the unlicensed band during one or more subframes based on the OFDM start symbol position information and the TxOP configuration information, wherein the channel state of the unlicensed band is related with whether an idle state starts at a subframe before the one or more subframes or not, and wherein an end of the first TxOP duration equals to an end of a subframe of a primary cell (PCell) of the CA, wherein the PCell is a serving cell configured on a licensed band, and wherein a secondary cell (SCell) of the CA is a serving cell configured on the unlicensed band. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16)
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Specification