Transmission timing in a carrier group
First Claim
Patent Images
1. A method for use in a wireless device, the method comprising:
- a) receiving from a base station at least one radio resource control message comprising configuration parameters of;
i) a first carrier and one or more additional carriers; and
ii) a first carrier group and a second carrier group, said first carrier group comprising a first subset of a plurality of carriers, said first subset comprising said first carrier, said second carrier group comprising a second subset of said one or more additional carriers;
b) transmitting first uplink signals in said second carrier group employing a first additional carrier as a timing reference carrier, said first additional carrier being an activated carrier in said second carrier group;
c) changing autonomously said timing reference carrier to a second additional carrier in said second carrier group in response to deactivation or release of said first additional carrier and when at least one additional carrier in said second carrier group is active;
d) transmitting second uplink signals in said second carrier group employing said second additional carrier as said timing reference carrier;
e) receiving a time alignment command comprising a time adjustment value and an index identifying one of said first carrier group or said second carrier group; and
f) applying said time adjustment value to third uplink signals transmitted on every activated uplink carriers in the carrier group identified by said index.
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Accused Products
Abstract
A base station configures a first carrier group and a second carrier group in a wireless device. The wireless device transmits first uplink signals in the second carrier group employing a first secondary carrier in the second carrier group as a timing reference carrier. The wireless device autonomously changes the timing reference carrier to a second secondary carrier in the second carrier group. The second secondary carrier is an active carrier different from the first secondary carrier. The wireless device transmits second uplink signals in the second carrier group employing the second secondary carrier as the timing reference carrier.
83 Citations
16 Claims
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1. A method for use in a wireless device, the method comprising:
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a) receiving from a base station at least one radio resource control message comprising configuration parameters of; i) a first carrier and one or more additional carriers; and ii) a first carrier group and a second carrier group, said first carrier group comprising a first subset of a plurality of carriers, said first subset comprising said first carrier, said second carrier group comprising a second subset of said one or more additional carriers; b) transmitting first uplink signals in said second carrier group employing a first additional carrier as a timing reference carrier, said first additional carrier being an activated carrier in said second carrier group; c) changing autonomously said timing reference carrier to a second additional carrier in said second carrier group in response to deactivation or release of said first additional carrier and when at least one additional carrier in said second carrier group is active; d) transmitting second uplink signals in said second carrier group employing said second additional carrier as said timing reference carrier; e) receiving a time alignment command comprising a time adjustment value and an index identifying one of said first carrier group or said second carrier group; and f) applying said time adjustment value to third uplink signals transmitted on every activated uplink carriers in the carrier group identified by said index. - View Dependent Claims (2, 3, 4, 5)
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6. 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 at least one or more processors, cause said wireless device to; i) receive from said base station at least one radio resource control message comprising configuration parameters of; (1) a first carrier and one or more additional carriers; and (2) a first carrier group and a second carrier group, said first carrier group comprising a first subset of a plurality of carriers, said first subset comprising said first carrier, said second carrier group comprising a second subset of said one or more additional carriers; ii) transmit first uplink signals in said second carrier group employing a first additional carrier as a timing reference carrier, said first additional carrier being an activated carrier in said second carrier group; iii)change autonomously said timing reference carrier to a second additional carrier in said second carrier group in response to deactivation or release of said first additional carrier and when at least one additional carrier in said second carrier group is active; iv) transmit second uplink signals in said second carrier group employing said second additional carrier as said timing reference carrier; v) receive a time alignment command comprising a time adjustment value and an index identifying one of said first carrier group or said second carrier group; and vi) apply said time adjustment value to third uplink signals transmitted on every activated uplink carrier in the carrier group identified by said index. - 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 at least one or more processors, cause said wireless device to; i) receive from said base station at least one radio resource control message comprising configuration parameters of; (1) a first carrier and one or more secondary carriers; and (2) a first carrier group and a second carrier group, said first carrier group comprising a first subset of a plurality of carriers, said first subset comprising said first carrier, said second carrier group comprising a second subset of said one or more secondary carriers; ii) receive a control command to cause transmission a random access preamble on a reference secondary carrier in said second carrier group, said reference secondary carrier to be employed as a timing reference carrier to transmit first uplink signals in said second carrier group; iii) change autonomously said timing reference carrier to a second activated secondary carrier in said second carrier group in response to deactivation or release of said reference secondary carrier and when at least one secondary carrier in said second carrier group is active; iv) transmit second uplink signals in said second carrier group employing said second activated secondary carrier as said timing reference carrier; v) receive a time alignment command comprising a time adjustment value and an index identifying one of said first carrier group or said second carrier group; and vi) apply said time adjustment value to third uplink signals transmitted on every activated uplink carrier in the carrier group identified by said index. - View Dependent Claims (12, 13, 14, 15, 16)
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Specification