Primary and secondary cell group configuration
First Claim
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1. A method comprising:
- a) transmitting, by a base station, at least one control message to a wireless device in a plurality of wireless devices, said at least one control message;
i) configured to cause in said wireless device;
(1) configuration of a plurality of cells comprising at least one secondary cell; and
(2) assignment of each of said at least one secondary cell to a cell group in a plurality of cell groups, said plurality of cell groups comprising;
(a) a primary cell group comprising a first subset of said plurality of cells, said first subset comprising a primary cell, uplink transmissions by said wireless device in said primary cell group employing a first synchronization signal transmitted on said primary cell; and
(b) at least one secondary cell group, a first secondary cell group in said at least one secondary cell group comprising a second subset of said at least one secondary cell, uplink transmissions in said secondary cell group employing a second synchronization signal on an activated secondary cell in said first secondary cell group as a secondary timing reference; and
ii) comprising a plurality of dedicated parameters specific to said wireless device, said plurality of dedicated parameters comprising a sequence of at least one first information element, each of said at least one first information element comprising;
a first cell group index of a first secondary cell group and a first time alignment timer for said first secondary cell group, wherein for each of said at least one secondary cell;
(1) if said plurality of dedicated parameters comprise a cell group index for said secondary cell, assigning said secondary cell to one of said at least one secondary cell group identified by said cell group index; and
(2) otherwise, assigning said secondary cell to said primary cell group;
b) receiving, by said base station, a random access preamble on random access resources of a secondary cell in said secondary cell group; and
c) transmitting a random access response comprising a timing advance command for said secondary cell group.
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Abstract
A base station transmits control message(s) to a wireless device configuring secondary cell(s). Each of the secondary cells is assigned to a cell group in a plurality of cell groups comprising a primary cell group and at least one secondary cell group. The control message(s) comprise dedicated parameters. If dedicated parameters comprise a cell group index for the secondary cell, the wireless device assigns the secondary cell to one of the at least one secondary cell group identified by the cell group index. Otherwise, the wireless device assigns the secondary cell to the primary cell group.
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Citations
19 Claims
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1. A method comprising:
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a) transmitting, by a base station, at least one control message to a wireless device in a plurality of wireless devices, said at least one control message; i) configured to cause in said wireless device; (1) configuration of a plurality of cells comprising at least one secondary cell; and (2) assignment of each of said at least one secondary cell to a cell group in a plurality of cell groups, said plurality of cell groups comprising; (a) a primary cell group comprising a first subset of said plurality of cells, said first subset comprising a primary cell, uplink transmissions by said wireless device in said primary cell group employing a first synchronization signal transmitted on said primary cell; and (b) at least one secondary cell group, a first secondary cell group in said at least one secondary cell group comprising a second subset of said at least one secondary cell, uplink transmissions in said secondary cell group employing a second synchronization signal on an activated secondary cell in said first secondary cell group as a secondary timing reference; and ii) comprising a plurality of dedicated parameters specific to said wireless device, said plurality of dedicated parameters comprising a sequence of at least one first information element, each of said at least one first information element comprising;
a first cell group index of a first secondary cell group and a first time alignment timer for said first secondary cell group, wherein for each of said at least one secondary cell;(1) if said plurality of dedicated parameters comprise a cell group index for said secondary cell, assigning said secondary cell to one of said at least one secondary cell group identified by said cell group index; and (2) otherwise, assigning said secondary cell to said primary cell group; b) receiving, by said base station, a random access preamble on random access resources of a secondary cell in said secondary cell group; and c) transmitting a random access response comprising a timing advance command for said secondary cell group. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A base station comprising:
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a) one or more communication interfaces; b) one or more processors; and c) memory storing instructions that, when executed, cause said base station to; i) transmit at least one control message to a wireless device, said at least one control message; (1) configured to cause in said wireless device; (a) configuration of a plurality of cells comprising at least one secondary cell; and (b) assignment of each of said at least one secondary cell to a cell group in a plurality of cell groups, said plurality of cell groups comprising;
(i) a primary cell group comprising a first subset of said plurality of cells, said first subset comprising a primary cell; and
(ii) at least one secondary cell group, a first secondary cell group in said at least one secondary cell group comprising a second subset of said at least one secondary cell; and(2) comprising a plurality of dedicated parameters comprising a sequence of at least one first information element, each of said at least one first information element comprising;
a first cell group index of a first secondary cell group and a first time alignment timer for said first secondary cell group, wherein for each of said at least one secondary cell;(a) if said plurality of dedicated parameters comprise a cell group index for said secondary cell, assigning said secondary cell to one of said at least one secondary cell group identified by said cell group index; and (b) otherwise, assigning said secondary cell to said primary cell group; ii) receive a random access preamble on random access resources of a secondary cell in said secondary cell group; and iii) transmit a random access response on said primary cell, said random access response comprising a timing advance command for said secondary cell group. - View Dependent Claims (11, 12, 13, 14)
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15. A wireless device comprising:
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a) one or more communication interfaces; b) one or more processors; and c) memory storing instructions that, when executed, cause said wireless device to; i) receive at least one control message from a base station, said at least one control message; (1) causing in said wireless device; (a) configuration of a plurality of cells comprising at least one secondary cell; and (b) assignment of each of said at least one secondary cell to a cell group in a plurality of cell groups, said plurality of cell groups comprising;
(i) a primary cell group comprising a first subset of said plurality of cells, said first subset comprising a primary cell; and
(ii) at least one secondary cell group, a first secondary cell group in said at least one secondary cell group comprising a second subset of said at least one secondary cell; and(2) comprising a plurality of dedicated parameters comprising a sequence of at least one first information element, each of said at least one first information element comprising;
a first cell group index of a first secondary cell group and a first time alignment timer for said first secondary cell group, wherein for each of said at least one secondary cell;(a) if said plurality of dedicated parameters comprise a cell group index for said secondary cell, assigning said secondary cell to one of said at least one secondary cell group identified by said cell group index; and (b) otherwise, assigning said secondary cell to said primary cell group; ii) transmit a random access preamble on random access resources of a secondary cell in said secondary cell group in response to receiving a control command from said base station; and iii) receive a random access response on said primary cell, said random access response comprising a timing advance command for said secondary cell group. - View Dependent Claims (16, 17, 18, 19)
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Specification