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US 10,257,855 B2Granted
Multi-carrier detection in a wireless network
AssigneeComcast Cable Communications, LLC
InventorsAlireza Babaei, Esmael Hejazi Dinan
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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.
Claims32
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.
6 more elements
A wireless device comprising:
- 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.
9 more elements
A system comprising:
- 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.
12 more elements
Dependencies are inferred from the claim text.