Multi-carrier detection in a wireless network
First Claim
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1. A method comprising:
- receiving, by a wireless device from a base station, one or more messages comprising a corresponding listen before talk (LBT) parameter for each of a plurality of licensed assisted access (LAA) cells;
receiving, by the wireless device, uplink grants for uplink transmissions on the plurality of LAA cells, the uplink transmissions configured to have a same starting position;
determining, by the wireless device, an energy detection threshold for each of the plurality of LAA cells based, at least in part, on the corresponding LBT parameter;
selecting, by the wireless device, a first LAA cell uniformly randomly from the plurality of LAA cells;
performing, by the wireless device and for the first LAA cell, a first LBT procedure employing a long monitoring period;
performing, by the wireless device, a second LBT procedure for a second LAA cell of the plurality of LAA cells employing a short monitoring period, wherein the second LAA cell is different than the first LAA cell;
based on the first LBT procedure indicating a clear channel, transmitting, to the base station, one or more first transport blocks (TBs) on the first LAA cell; and
based on the first LBT procedure indicating a clear channel for the first LAA cell and the second LBT procedure indicating a clear channel for the second LAA cell, transmitting, to the base station, one or more second TBs on the second LAA cell.
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Abstract
The wireless device selects a first licensed assisted access (LAA) cell uniformly randomly from a plurality of LAA cells. The wireless device performs a first listen before talk (LBT) procedure for the first LAA cell employing a long monitoring period. The wireless device performs a second LBT procedure for a second LAA cell in the plurality of LAA cells employing a short monitoring period. The wireless device transmits to a base station one or more first transport blocks (TBs) on the first LAA cell and one or more second TBs on the second LAA cell.
135 Citations
32 Claims
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1. A method comprising:
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receiving, by a wireless device from a base station, one or more messages comprising a corresponding listen before talk (LBT) parameter for each of a plurality of licensed assisted access (LAA) cells; receiving, by the wireless device, uplink grants for uplink transmissions on the plurality of LAA cells, the uplink transmissions configured to have a same starting position; determining, by the wireless device, an energy detection threshold for each of the plurality of LAA cells based, at least in part, on the corresponding LBT parameter; selecting, by the wireless device, a first LAA cell uniformly randomly from the plurality of LAA cells; performing, by the wireless device and for the first LAA cell, a first LBT procedure employing a long monitoring period; performing, by the wireless device, a second LBT procedure for a second LAA cell of the plurality of LAA cells employing a short monitoring period, wherein the second LAA cell is different than the first LAA cell; based on the first LBT procedure indicating a clear channel, transmitting, to the base station, one or more first transport blocks (TBs) on the first LAA cell; and based on the first LBT procedure indicating a clear channel for the first LAA cell and the second LBT procedure indicating a clear channel for the second LAA cell, transmitting, to the base station, one or more second TBs on the second LAA cell. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A wireless device comprising:
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one or more processors; and memory storing instructions that, when executed by the one or more processors, cause the wireless device to; receive, from a base station, one or more messages comprising a corresponding listen before talk (LBT) parameter for each of a plurality of licensed assisted access (LAA) cells; receive uplink grants for uplink transmissions on the plurality of LAA cells, the uplink transmissions configured to have a same starting position; determine an energy detection threshold for each of the plurality of LAA cells based, at least in part, on the corresponding LBT parameter; select a first LAA cell uniformly randomly from the plurality of LAA cells; perform, for the first LAA cell, a first LBT procedure employing a long monitoring period; perform a second LBT procedure for a second LAA cell of the plurality of LAA cells employing a short monitoring period, wherein the second LAA cell is different than the first LAA cell; based on the first LBT procedure indicating a clear channel, transmit, to the base station, one or more first transport blocks (TBs) on the first LAA cell; and based on the first LBT procedure indicating a clear channel for the first LAA cell and the second LBT procedure indicating a clear channel for the second LAA cell, transmit, to the base station, one or more second TBs on the second LAA cell. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19, 20, 21, 22)
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23. A system comprising:
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a base station; and a wireless device; wherein the base station is configured to; transmit, to the wireless device, one or more messages comprising a corresponding listen before talk (LBT) parameter for each of a plurality of licensed assisted access (LAA) cells; and wherein the wireless device is configured to; receive, from the base station, the one or more messages comprising the corresponding LBT parameter; receive uplink grants for uplink transmissions on the plurality of LAA cells, the uplink transmissions configured to have a same starting position; determine an energy detection threshold for each of the plurality of LAA cells based, at least in part, on the corresponding LBT parameter; select a first LAA cell uniformly randomly from the plurality of LAA cells; perform, for the first LAA cell, a first LBT procedure employing a long monitoring period; perform a second LBT procedure for a second LAA cell of the plurality of LAA cells employing a short monitoring period, wherein the second LAA cell is different than the first LAA cell; based on the first LBT procedure indicating a clear channel, transmit to the base station, one or more first transport blocks (TBs) on the first LAA cell; based on the first LBT procedure indicating a clear channel for the first LAA cell and the second LBT procedure indicating a clear channel for the second LAA cell, transmit to the base station, one or more second TBs on the second LAA cell. - View Dependent Claims (24, 25, 26, 27, 28, 29, 30, 31, 32)
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Specification