Carrier grouping in multicarrier communications
First Claim
Patent Images
1. A wireless device comprising:
- 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 at least one radio resource control message comprising a plurality of parameters of;
(1) a first carrier and at least one second carrier; and
(2) a first carrier group and at least one second carrier group, said first carrier group comprising a first subset of a plurality of carriers, said first subset comprising said first carrier, each of said at least one second carrier group comprising a second subset of said at least one second carrier;
and causing assignment of each of said at least one second carrier to one of said first carrier group and said at least one second carrier group, wherein;
(1) if said plurality of parameters comprise a carrier group index for a second carrier, said second carrier is assigned to one of said at least one second carrier group identified by said carrier group index; and
(2) otherwise, said second carrier is assigned to said first carrier group;
ii) receive a control command configured to cause transmission of a random access preamble on random access resources of a carrier in a second carrier group in said at least one second carrier group; and
iii) receive a random access response on said first carrier, said random access response comprising a time alignment command for said second carrier group.
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Accused Products
Abstract
A wireless device receives a message assigning each second carrier to one of a first carrier group and second carrier group(s). The message comprises parameters for each second carrier. If the parameters comprise a carrier group index for a second carrier, the second carrier is assigned to one of the second carrier group(s) identified by the carrier group index. Otherwise, the second carrier is assigned to the first carrier group. The wireless device receives a time alignment command comprising the carrier group index and a time adjustment value.
79 Citations
11 Claims
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1. 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 at least one radio resource control message comprising a plurality of parameters of; (1) a first carrier and at least one second carrier; and (2) a first carrier group and at least one second carrier group, said first carrier group comprising a first subset of a plurality of carriers, said first subset comprising said first carrier, each of said at least one second carrier group comprising a second subset of said at least one second carrier; and causing assignment of each of said at least one second carrier to one of said first carrier group and said at least one second carrier group, wherein; (1) if said plurality of parameters comprise a carrier group index for a second carrier, said second carrier is assigned to one of said at least one second carrier group identified by said carrier group index; and (2) otherwise, said second carrier is assigned to said first carrier group; ii) receive a control command configured to cause transmission of a random access preamble on random access resources of a carrier in a second carrier group in said at least one second carrier group; and iii) receive a random access response on said first carrier, said random access response comprising a time alignment command for said second carrier group. - View Dependent Claims (2, 3)
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4. A method for use in a wireless device, the method comprising:
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a) receiving at least one radio resource control message comprising a plurality of parameters of; i) a first carrier and at least one second carrier; and ii) a first carrier group and at least one second carrier group, said first carrier group comprising a first subset of a plurality of carriers, said first subset comprising said first carrier, each of said at least one second carrier group comprising a second subset of said at least one second carrier; and causing assignment of each of said at least one second carrier to one of said first carrier group and said at least one second carrier group, wherein; i) if said plurality of parameters comprise a carrier group index for a second carrier, said second carrier is assigned to one of said at least one second carrier group identified by said carrier group index; and ii) otherwise, said second carrier is assigned to said first carrier group; and b) receiving a control command configured to cause transmission of a random access preamble on random access resources of a carrier in a second carrier group in said at least one second carrier group; and c) receiving a random access response on said first carrier, said random access response comprising a time alignment command for said second carrier group. - View Dependent Claims (5, 6, 7, 8)
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9. 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 at least one or more processors, cause said base station to; i) transmit at least one radio resource control message comprising a plurality of parameters of; (1) a first carrier and at least one second carrier; and (2) a first carrier group and at least one second carrier group, said first carrier group comprising a first subset of a plurality of carriers, said first subset comprising said first carrier, each of said at least one second carrier group comprising a second subset of said at least one second carrier; and causing assignment of each of said at least one second carrier to one of said first carrier group and said at least one second carrier group, wherein; (1) if said plurality of parameters comprise a carrier group index for a second carrier, said second carrier is assigned to one of said at least one second carrier group identified by said carrier group index; and (2) otherwise, said second carrier is assigned to said first carrier group; and ii) transmit a control command configured to cause transmission of a random access preamble on random access resources of a carrier in a second carrier group in said at least one second carrier group; and iii) transmit a random access response on said first carrier, said random access response comprising a time alignment command for said second carrier group. - View Dependent Claims (10, 11)
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Specification