Wireless device handover signalling
First Claim
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1. A method comprising:
- receiving, by a first base station from a second base station, a first message comprising one or more parameters indicating that a wireless device supports configuration of a plurality of cell groups;
transmitting, by the first base station to the second base station, a second message comprising configuration parameters of a plurality of cells grouped into a first plurality of cell groups comprising a first cell group and a second cell group; and
receiving, by the first base station, from the wireless device, via the first plurality of cell groups, and based on a third message comprising the configuration parameters, uplink signals, 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.
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Abstract
Methods and apparatuses are described for wireless communications. Cells may be grouped into a plurality of cell groups. Base stations may exchange messages regarding the cell groups so that one of the base stations may receive uplink signals from a wireless device.
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Citations
32 Claims
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1. A method comprising:
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receiving, by a first base station from a second base station, a first message comprising one or more parameters indicating that a wireless device supports configuration of a plurality of cell groups; transmitting, by the first base station to the second base station, a second message comprising configuration parameters of a plurality of cells grouped into a first plurality of cell groups comprising a first cell group and a second cell group; and receiving, by the first base station, from the wireless device, via the first plurality of cell groups, and based on a third message comprising the configuration parameters, uplink signals, 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. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A first base station comprising:
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one or more processors; and memory storing instructions that, when executed by the one or more processors, cause the first base station to; receive, from a second base station, a first message comprising one or more parameters indicating that a wireless device supports configuration of a plurality of cell groups; transmit, to the second base station, a second message comprising configuration parameters of a plurality of cells grouped into a first plurality of cell groups comprising a first cell group and a second cell group; and receive, from the wireless device, via the first plurality of cell groups, and based on a third message comprising the configuration parameters, uplink signals, 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. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19, 20, 21)
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22. A non-transitory computer-readable medium storing instructions that, when executed, configure a first base station to:
- receive, from a second base station, a first message comprising one or more parameters indicating that a wireless device supports configuration of a plurality of cell groups;
transmit, to the second base station, a second message comprising configuration parameters of a plurality of cells grouped into a first plurality of cell groups comprising a first cell group and a second cell group; and
receive, from the wireless device, via the first plurality of cell groups, and based on a third message comprising the configuration parameters, uplink signals, 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. - View Dependent Claims (23, 24, 25, 26, 27, 28, 29, 30, 31, 32)
- receive, from a second base station, a first message comprising one or more parameters indicating that a wireless device supports configuration of a plurality of cell groups;
Specification