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US 8,804,668 B2Granted
Primary and secondary cell group configuration
AssigneeOfinno Technologies, LLC
InventorEsmael Hejazi Dinan
Life of this patent
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Abstract
A base station transmits a message assigning each secondary cell to a cell group. The message comprises dedicated parameters for a secondary cell. If the dedicated parameters comprise a cell group index for the secondary cell, the secondary cell is assigned to a secondary cell group. Otherwise, the secondary cell is assigned to the primary cell group. The message comprises MAC dedicated parameters comprising a sequence of at least one information element. Each information element comprises a first cell group index of a first secondary cell group and a corresponding time alignment timer value.
Claims20
A method comprising:
- a) transmitting, by a base station, at least one Radio Resource Control (RRC) message configured to cause assignment of each of at least one secondary cell to one of a primary cell group and at least one secondary cell group, said at least one RRC message comprising:
- i) a plurality of dedicated parameters for each of said at least one secondary cell, wherein:
- (1) if said plurality of dedicated parameters comprise a cell group index for a secondary cell, said secondary cell is assigned to one of said at least one secondary cell group identified by said cell group index;
- and
- (2) otherwise, said secondary cell is assigned to said primary cell group;
- and
- ii) MAC dedicated parameters comprising a sequence of at least one information element, each information element comprising:
- a first cell group index of a first secondary cell group and a timer value for a corresponding time alignment timer, said corresponding time alignment timer indicating how long said first secondary cell group is considered to be uplink time aligned;
- and
- b) transmitting a MAC timing advance command comprising said first cell group index causing restart of said corresponding time alignment timer.
7 more elements
A base station comprising:
- 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 Radio Resource Control (RRC) message configured to cause assignment of each of at least one secondary cell to one of a primary cell group and at least one secondary cell group, said at least one RRC message comprising:
- (1) a plurality of dedicated parameters for each of said at least one secondary cell, wherein:
- (a) if said plurality of dedicated parameters comprise a cell group index for a secondary cell, said secondary cell is assigned to one of said at least one secondary cell group identified by said cell group index;
- and
- (b) otherwise, said secondary cell is assigned to said primary cell group;
- and
- (2) MAC dedicated parameters comprising a sequence of at least one information element, each information element comprising:
- a first cell group index of a first secondary cell group and a timer value for a corresponding time alignment timer, said corresponding time alignment timer indicating how long said first secondary cell group is considered to be uplink time aligned;
- and
- ii) transmit a MAC timing advance command comprising said first cell group index causing restart of said corresponding time alignment timer.
11 more elements
A wireless device comprising:
- 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 Radio Resource Control (RRC) message to cause assignment of each of at least one secondary cell to one of a primary cell group and at least one secondary cell group, said at least one RRC message comprising:
- (1) a plurality of dedicated parameters for each of said at least one secondary cell, wherein:
- (a) if said plurality of dedicated parameters comprise a cell group index for a secondary cell, said secondary cell is assigned to one of said at least one secondary cell group identified by said cell group index;
- and
- (b) otherwise, said secondary cell is assigned to said primary cell group;
- and
- (2) MAC dedicated parameters comprising a sequence of at least one information element, each information element comprising:
- a first cell group index of a first secondary cell group and a timer value for a corresponding time alignment timer, said corresponding time alignment timer indicating how long said first secondary cell group is considered to be uplink time aligned;
- and
- ii) receive a MAC timing advance command comprising said first cell group index causing restart of said corresponding time alignment timer.
11 more elements
Dependencies are inferred from the claim text.