Wireless multicarrier random access process
First Claim
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1. A base station comprising:
- one or more processors; and
memory storing instructions that, when executed by the one or more processors, cause the base station to;
receive, from a wireless device, a buffer status report;
determine, based on the buffer status report, to use radio resources of a secondary cell for transmission of data, wherein uplink timing associated with the secondary cell is different from uplink timing associated with activated cells of the wireless device;
transmit, to the wireless device, a control command for a random access preamble;
receive, from the wireless device and via the secondary cell, the random access preamble, wherein transmission timing associated with the random access preamble is based on a first synchronization signal transmitted by the base station via a secondary cell group comprising the secondary cell; and
transmit at least one control packet comprising resource allocation information for transmission, via the secondary cell, of a plurality of packets of data.
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Abstract
A Base station transmits a control command for transmission of a random access preamble on a secondary cell if the base station determines radio resources of the secondary cell are required for transmission of a portion of data and that the secondary cell requires a different uplink timing from currently activated and synchronized cells of the wireless device. The base station transmits at least one control packet for comprising transport format information and resource allocation information for transmission of a plurality of packets of the data to be transmitted on the secondary cell.
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Citations
44 Claims
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1. A 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 base station to; receive, from a wireless device, a buffer status report; determine, based on the buffer status report, to use radio resources of a secondary cell for transmission of data, wherein uplink timing associated with the secondary cell is different from uplink timing associated with activated cells of the wireless device; transmit, to the wireless device, a control command for a random access preamble; receive, from the wireless device and via the secondary cell, the random access preamble, wherein transmission timing associated with the random access preamble is based on a first synchronization signal transmitted by the base station via a secondary cell group comprising the secondary cell; and transmit at least one control packet comprising resource allocation information for transmission, via the secondary cell, of a plurality of packets of data. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A method comprising:
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receiving, by a base station and from a wireless device, a buffer status report; determining, based on the buffer status report, to use radio resources of a secondary cell for transmission of data, wherein uplink timing associated with the secondary cell is different from uplink timing associated with activated cells of the wireless device; and transmitting, to the wireless device, a control command for a random access preamble; receiving, from the wireless device and via the secondary cell, the random access preamble, wherein transmission timing associated with the random access preamble is based on a first synchronization signal transmitted by the base station via a secondary cell group comprising the secondary cell; and transmitting at least one control packet comprising resource allocation information for transmission, via the secondary cell, of a plurality of packets of data. - View Dependent Claims (9, 10, 11, 12, 13, 14, 15, 16)
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17. A method comprising:
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transmitting, by a base station and to a wireless device, at least one control message for establishing at least one radio bearer, wherein the at least one radio bearer is for enabling uplink data transmission, from the wireless device, with a guaranteed bit rate; determining, based on the guaranteed bit rate, to use radio resources of a secondary cell for transmission of data, wherein uplink timing associated with the secondary cell is different from uplink timing associated with activated cells of the wireless device; and transmitting, to the wireless device, a control command for a random access preamble; receiving, from the wireless device and via the secondary cell, the random access preamble, wherein transmission timing associated with the random access preamble is based on a first synchronization signal transmitted by the base station via a secondary cell group comprising the secondary cell; and transmitting at least one control packet comprising resource allocation information for transmission, via the secondary cell, of a plurality of packets of data. - View Dependent Claims (18, 19, 20, 21, 22, 23)
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24. A system comprising:
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a base station and a wireless device; wherein the base station comprises; first one or more processors; and first memory storing first instructions that, when executed by the first one or more processors, cause the base station to; determine, based on a buffer status report, to use radio resources of a secondary cell for transmission of data, wherein uplink timing associated with the secondary cell is different from uplink timing associated with activated cells of the wireless device; and transmit, to the wireless device, a control command for a random access preamble; transmit, to the wireless device, at least one control packet comprising resource allocation information for transmission, via the secondary cell, of a plurality of packets of data; and wherein the wireless devices comprises; second one or more processors; and second memory storing second instructions that, when executed by the second one or more processors, cause the wireless device to; transmit, to the base station, the buffer status report; and transmit, to the base station and via the secondary cell, the random access preamble, wherein transmission timing associated with the random access preamble is based on a first synchronization signal transmitted by the base station via a secondary cell group comprising the secondary cell. - View Dependent Claims (25, 26, 27, 28, 29, 30)
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31. A 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 base station to; transmit, to a wireless device, at least one control message for establishing at least one radio bearer, wherein the at least one radio bearer is for enabling uplink data transmission, from the wireless device, with a guaranteed bit rate; determine, based on the guaranteed bit rate, to use radio resources of a secondary cell for transmission of data, wherein uplink timing associated with the secondary cell is different from uplink timing associated with activated cells of the wireless device; transmit, to the wireless device, a control command for a random access preamble; receive, from the wireless device and via the secondary cell, the random access preamble, wherein transmission timing associated with the random access preamble is based on a first synchronization signal transmitted by the base station via a secondary cell group comprising the secondary cell; and transmit at least one control packet comprising resource allocation information for transmission, via the secondary cell, of a plurality of packets of data. - View Dependent Claims (32, 33, 34, 35, 36, 37)
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38. A system comprising:
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a base station and a wireless device; wherein the base station comprises; first one or more processors; and first memory storing first instructions that, when executed by the first one or more processors, cause the base station to; transmit, to the wireless device, at least one control message for establishing at least one radio bearer, wherein the at least one radio bearer is for enabling uplink data transmission, from the wireless device, with a guaranteed bit rate; determine, based on the guaranteed bit rate, to use radio resources of a secondary cell for transmission of data, wherein uplink timing associated with the secondary cell is different from uplink timing associated with activated cells of the wireless device; transmit, to the wireless device, a control command for a random access preamble; and wherein the wireless device comprises; second one or more processors; and second memory storing second instructions that, when executed by the second one or more processors, cause the wireless device to; transmit, to the base station and via the secondary cell, the random access preamble, wherein transmission timing associated with the random access preamble is based on a first synchronization signal transmitted by the base station via a secondary cell group comprising the secondary cell. - View Dependent Claims (39, 40, 41, 42, 43, 44)
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Specification