Cell timing in a wireless device and base station
First Claim
Patent Images
1. 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 at least one control message comprising configuration parameters of a plurality of cells grouped into a plurality of cell groups comprising a first cell group and a second cell group, wherein;
uplink transmission timing associated with the first cell group is based on a first cell of the first cell group; and
uplink transmission timing associated with the second cell group is based on a second cell of the second cell group;
receive a timing advance command comprising a timing adjustment value and a cell group index;
apply the timing advance command to a cell group corresponding to the cell group index;
determine a transmission timing difference between the first cell group and the second cell group; and
stop transmitting via one or more secondary cells, in response to the transmission timing difference exceeding a threshold.
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Abstract
A plurality of cells are grouped into a primary cell group and a secondary cell group. The wireless device receives a timing advance command comprising a time adjustment value and an index of the secondary cell group. The wireless device applies the time adjustment value to uplink transmission timing of the secondary cell group. The wireless device triggers an action when the difference between primary cell group timing and secondary cell group timing is greater than a value.
394 Citations
92 Claims
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1. 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 at least one control message comprising configuration parameters of a plurality of cells grouped into a plurality of cell groups comprising a first cell group and a second cell group, wherein; uplink transmission timing associated with the first cell group is based on a first cell of the first cell group; and uplink transmission timing associated with the second cell group is based on a second cell of the second cell group; receive a timing advance command comprising a timing adjustment value and a cell group index; apply the timing advance command to a cell group corresponding to the cell group index; determine a transmission timing difference between the first cell group and the second cell group; and stop transmitting via one or more secondary cells, in response to the transmission timing difference exceeding a threshold. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. 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 at least one control message comprising configuration parameters of a plurality of cells grouped into a plurality of cell groups comprising a first cell group and a second cell group, wherein; uplink transmission timing associated with the first cell group is based on a first cell of the first cell group; and uplink transmission timing associated with the second cell group is based on a second cell of the second cell group; receive a timing advance command comprising a timing adjustment value and a cell group index; apply the timing advance command to a cell group corresponding to the cell group index; determine a transmission timing difference between the first cell group and the second cell group; and determine one or more secondary cells to be out-of-sync, in response to the transmission timing difference exceeding a threshold. - View Dependent Claims (9, 10, 11, 12, 13, 14)
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15. 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 at least one control message comprising configuration parameters of a plurality of cells grouped into a plurality of cell groups comprising a first cell group and a second cell group, wherein; uplink transmission timing associated with the first cell group is based on a first cell of the first cell group; and uplink transmission timing associated with the second cell group is based on a second cell of the second cell group; autonomously determine a required timing adjustment based on a downlink reference timing change associated with one of the plurality of cell groups; determine a transmission timing difference based on the required timing adjustment; and apply the required timing adjustment to uplink signals in the one of the plurality of cell groups, unless the transmission timing difference exceeds a threshold. - View Dependent Claims (16, 17, 18, 19, 20, 21, 22, 23)
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24. A method comprising:
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receiving, by a wireless device, at least one control message comprising configuration parameters of a plurality of cells grouped into a plurality of cell groups comprising a first cell group and a second cell group, wherein; uplink transmission timing associated with the first cell group is based on a first cell of the first cell group; and uplink transmission timing associated with the second cell group is based on a second cell of the second cell group; receiving a timing advance command comprising a timing adjustment value and a cell group index; applying the timing advance command to a cell group corresponding to the cell group index; determining a transmission timing difference between the first cell group and the second cell group; and stop transmitting via one or more secondary cells, in response to the transmission timing difference exceeding a threshold. - View Dependent Claims (25, 26, 27, 28, 29, 30)
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31. A method comprising:
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receiving, by a wireless device, at least one control message comprising configuration parameters of a plurality of cells grouped into a plurality of cell groups comprising a first cell group and a second cell group, wherein; uplink transmission timing associated with the first cell group is based on a first cell of the first cell group; and uplink transmission timing associated with the second cell group is based on a second cell of the second cell group; receiving a timing advance command comprising a timing adjustment value and a cell group index; applying the timing advance command to a cell group corresponding to the cell group index; determining a transmission timing difference between the first cell group and the second cell group; and determining one or more secondary cells to be out-of-sync, in response to the transmission timing difference exceeding a threshold. - View Dependent Claims (32, 33, 34, 35, 36, 37)
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38. A method comprising:
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receiving, by a wireless device, at least one control message comprising configuration parameters of a plurality of cells grouped into a plurality of cell groups comprising a first cell group and a second cell group, wherein; uplink transmission timing associated with the first cell group is based on a first cell of the first cell group; and uplink transmission timing associated with the second cell group is based on a second cell of the second cell group; autonomously determining a required timing adjustment based on a downlink reference timing change associated with one of the plurality of cell groups; determining a transmission timing difference based on the required timing adjustment; and associating the required timing adjustment with uplink signals in the one of the plurality of cell groups, unless the transmission timing difference exceeds a threshold. - View Dependent Claims (39, 40, 41, 42, 43, 44, 45, 46)
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47. A system comprising:
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a base station comprising; one or more processors; and memory storing instructions that, when executed by the one or more processors of the base station, cause the base station to; transmit at least one control message comprising configuration parameters of a plurality of cells grouped into a plurality of cell groups comprising a first cell group and a second cell group, wherein; uplink transmission timing associated with the first cell group is based on a first cell of the first cell group; and uplink transmission timing associated with the second cell group is based on a second cell of the second cell group; and transmit a timing advance command comprising a timing adjustment value and a cell group index; and a wireless device comprising; one or more processors; and memory storing instructions that, when executed by the one or more processors of the wireless device, cause the wireless device to; apply the timing advance command to a cell group corresponding to the cell group index; determine a transmission timing difference between the first cell group and the second cell group; and stop transmitting via one or more secondary cells, in response to the transmission timing difference exceeding a threshold. - View Dependent Claims (48, 49, 50, 51, 52, 53)
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54. A system comprising:
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a base station comprising; one or more processors; and memory storing instructions that, when executed by the one or more processors of the base station, cause the base station to; transmit at least one control message comprising configuration parameters of a plurality of cells grouped into a plurality of cell groups comprising a first cell group and a second cell group, wherein; uplink transmission timing associated with the first cell group is based on a first cell of the first cell group; and uplink transmission timing associated with the second cell group is based on a second cell of the second cell group; and transmit a timing advance command comprising a timing adjustment value and a cell group index; and a wireless device comprising; one or more processors; and memory storing instructions that, when executed by the one or more processors of the wireless device, cause the wireless device to; apply the timing advance command to a cell group corresponding to the cell group index; determine a transmission timing difference between the first cell group and the second cell group; and determine one or more secondary cells to be out-of-sync, in response to the transmission timing difference exceeding a threshold. - View Dependent Claims (55, 56, 57, 58, 59, 60)
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61. A system comprising:
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a base station comprising; one or more processors; and memory storing instructions that, when executed by the one or more processors of the base station, cause the base station to; transmit at least one control message comprising configuration parameters of a plurality of cells grouped into a plurality of cell groups comprising a first cell group and a second cell group, wherein; uplink transmission timing associated with the first cell group is based on a first cell of the first cell group; and uplink transmission timing associated with the second cell group is based on a second cell of the second cell group; and a wireless device comprising; one or more processors; and memory storing instructions that, when executed by the one or more processors of the wireless device, cause the wireless device to; autonomously determine a required timing adjustment based on a downlink reference timing change associated with one of the plurality of cell groups; determine a transmission timing difference based on the required timing adjustment; and apply the required timing adjustment to uplink signals in the one of the plurality of cell groups, unless the transmission timing difference exceeds a threshold. - View Dependent Claims (62, 63, 64, 65, 66, 67, 68, 69)
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70. A method comprising:
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transmitting, by a base station and to a wireless device, at least one control message comprising configuration parameters of a plurality of cells grouped into a plurality of cell groups comprising a first cell group and a second cell group, wherein; uplink transmission timing associated with the first cell group is based on a first cell of the first cell group; and uplink transmission timing associated with the second cell group is based on a second cell of the second cell group; transmitting, by the base station and to the wireless device, a timing advance command comprising a timing adjustment value and a cell group index; applying the timing advance command to a cell group corresponding to the cell group index; determining a transmission timing difference between the first cell group and the second cell group; and stop transmitting via one or more secondary cells, in response to the transmission timing difference exceeding a threshold. - View Dependent Claims (71, 72, 73, 74, 75, 76)
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77. A method comprising:
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transmitting, by a base station and to a wireless device, at least one control message comprising configuration parameters of a plurality of cells grouped into a plurality of cell groups comprising a first cell group and a second cell group, wherein; uplink transmission timing associated with the first cell group is based on a first cell of the first cell group; and uplink transmission timing associated with the second cell group is based on a second cell of the second cell group; transmitting, by the base station and to the wireless device, a timing advance command comprising a timing adjustment value and a cell group index; applying the timing advance command to a cell group corresponding to the cell group index; determining a transmission timing difference between the first cell group and the second cell group; and determining one or more secondary cells to be out-of-sync, in response to the transmission timing difference exceeding a threshold. - View Dependent Claims (78, 79, 80, 81, 82, 83)
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84. A method comprising:
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transmitting, by a base station and to a wireless device, at least one control message comprising configuration parameters of a plurality of cells grouped into a plurality of cell groups comprising a first cell group and a second cell group, wherein; uplink transmission timing associated with the first cell group is based on a first cell of the first cell group; and uplink transmission timing associated with the second cell group is based on a second cell of the second cell group; autonomously determining a required timing adjustment based on a downlink reference timing change associated with one of the plurality of cell groups; determining a transmission timing difference based on the required timing adjustment; and associating the required timing adjustment with uplink signals in the one of the plurality of cell groups, unless the transmission timing difference exceeds a threshold. - View Dependent Claims (85, 86, 87, 88, 89, 90, 91, 92)
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Specification