Sounding reference signal
First Claim
Patent Images
1. A method for use in a wireless device, the method comprising:
- a) receiving at least one radio resource control (RRC) message from a base station, said at least one RRC message causing in said wireless device;
i) assignment of a carrier to a second carrier group in a plurality of carrier groups comprising a first carrier group and said second carrier group;
ii) configuration of transmissions of sounding reference signals on said carrier;
b) receiving a control command configured to cause transmission of a random access preamble on random access resources in said second carrier group;
c) receiving a random access response comprising a long time alignment value for said second carrier group and a preamble identifier; and
d) transmitting one or more of said sounding reference signals on said carrier after adjusting uplink transmission timing of said second carrier group based on said long time alignment value, said wireless device configured to not transmit any of said sounding reference signals on said carrier until said wireless device receives said random access response comprising said long time alignment value and an uplink grant.
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Accused Products
Abstract
A wireless device receives RRC message(s) configuring transmissions of sounding reference signals on a second carrier in a second carrier group. The wireless device receives a random access response comprising a long time alignment value and a preamble identifier. The wireless device transmits the sounding reference signals on the second carrier after adjusting uplink transmission timing of the second carrier group. The wireless device is configured to not transmit any of the sounding reference signals on the second carrier until the wireless device receives the random access response comprising the long time alignment value and an uplink grant.
94 Citations
14 Claims
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1. A method for use in a wireless device, the method comprising:
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a) receiving at least one radio resource control (RRC) message from a base station, said at least one RRC message causing in said wireless device; i) assignment of a carrier to a second carrier group in a plurality of carrier groups comprising a first carrier group and said second carrier group; ii) configuration of transmissions of sounding reference signals on said carrier; b) receiving a control command configured to cause transmission of a random access preamble on random access resources in said second carrier group; c) receiving a random access response comprising a long time alignment value for said second carrier group and a preamble identifier; and d) transmitting one or more of said sounding reference signals on said carrier after adjusting uplink transmission timing of said second carrier group based on said long time alignment value, said wireless device configured to not transmit any of said sounding reference signals on said carrier until said wireless device receives said random access response comprising said long time alignment value and an uplink grant. - View Dependent Claims (2, 3, 4, 5)
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6. A base station comprising:
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a) one or more communication interfaces configured to communicate with a wireless device via at least one wireless link; b) one or more processors; and c) memory storing instructions that, when executed by said one or more processors, cause said base station to; i) transmit at least one radio resource control (RRC) message causing in said wireless device; (1) assignment of a carrier to a second carrier group in a plurality of carrier groups comprising a first carrier group and said second carrier group; (2) configuration of transmissions of sounding reference signals on said carrier; ii) transmit a control command configured to cause transmission of a random access preamble on random access resources in said second carrier group; iii) transmit a random access response comprising a long time alignment value for said second carrier group and a preamble identifier; and iv) receive one or more of said sounding reference signals on said carrier after uplink transmission timing of said second carrier group is adjusted based on said long time alignment value, wherein said base station does not receive any of said sounding reference signals on said carrier until said random access response comprising said long time alignment value and an uplink grant is transmitted by said base station. - View Dependent Claims (7, 8, 9, 10)
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11. A wireless device comprising:
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a) one or more communication interfaces configured to communicate with a base station via at least one wireless link; b) one or more processors; and c) memory storing instructions that, when executed by said one or more processors, cause said wireless device to; i) receive at least one radio resource control (RRC) message from said base station, said at least one RRC message causing in said wireless device; (1) assignment of a carrier to a second carrier group in a plurality of carrier groups comprising a first carrier group and said second carrier group; (2) configuration of transmissions of sounding reference signals on said carrier; ii) receive a control command configured to cause transmission of a random access preamble on random access resources in said second carrier group; iii) receive a random access response comprising a long time alignment value for said second carrier group and a preamble identifier; and iv) transmit one or more of said sounding reference signals on said carrier after adjusting uplink transmission timing of said second carrier group based on said long time alignment value, said wireless device configured to not transmit any of said sounding reference signals on said carrier until said wireless device receives said random access response comprising said long time alignment value and an uplink grant. - View Dependent Claims (12, 13, 14)
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Specification