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US 8,942,209 B2Granted
Systems and methods for supporting an enhanced serving cell change when moving among different cell types
AssigneeQUALCOMM Incorporated
InventorsSharad Deepak Sambhwani, Mario Mark Scipione, Rohit Kapoor, Andrei Dragos Radulescu
Life of this patent
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Abstract
A system and method enable handover from a DC-HSUPA-capable node in a cellular wireless network to a non-DC-HSUPA-capable node. According to various aspects of the present disclosure, a handover may implement a legacy serving cell change procedure or an enhanced serving cell change procedure. In either case, signaling from the network to user equipment includes information to enable the user equipment to change or remove an Active Set when undergoing a handover from a cell with two uplink carriers and accordingly two Active Sets, to a cell with one uplink carrier and accordingly one Active Set.
Claims50
A method of communication in a wireless network, comprising:
- establishing communication with the wireless network utilizing a first carrier and a second carrier for each of an uplink and a downlink;
- maintaining a first active set comprising a list of any cells in the wireless network that meet first criteria, the first active set corresponding to the first carrier;
- maintaining a second active set comprising a list of any cells in the wireless network that meet second criteria, the second active set corresponding to the second carrier;
- reporting that a target cell meets third criteria;
- and
- receiving, in response to reporting the target cell meets the third criteria,
- (i) configuration information from the wireless network for configuring wireless communication with the target cell, wherein the configuration information indicates that the target cell is not a Release-9 capable cell, and
- (ii) a notification indicating that the target cell does not support the second carrier, the notification comprising information enabling removal of the second active set.
5 more elements
An apparatus for communication in a wireless network, comprising:
- means for establishing communication with the wireless network utilizing a first carrier and a second carrier for each of an uplink and a downlink;
- means for maintaining a first active set comprising a list of any cells in the wireless network that meet first criteria, the first active set corresponding to the first carrier;
- means for maintaining a second active set comprising a list of any cells in the wireless network that meet second criteria, the second active set corresponding to the second carrier;
- means for reporting that a target cell meets third criteria;
- and
- means for receiving, in response to reporting the target cell meets the third criteria,
- (i) configuration information from the wireless network for configuring wireless communication with the target cell, wherein the configuration information indicates that the target cell is not a Release-9 capable cell, and
- (ii) a notification indicating that the target cell does not support the second carrier, the notification comprising information enabling removal of the second active set.
5 more elements
A computer program product for use in a wireless network, comprising:
- a non-transitory computer-readable medium comprising code for:
- establishing communication with the wireless network utilizing a first carrier and a second carrier for each of an uplink and a downlink;
- maintaining a first active set comprising a list of any cells in the wireless network that meet first criteria, the first active set corresponding to the first carrier;
- maintaining a second active set comprising a list of any cells in the wireless network that meet second criteria, the second active set corresponding to the second carrier;
- reporting that a target cell meets third criteria;
- and
- receiving, in response to reporting the target cell meets the third criteria,
- (i) configuration information from the wireless network for configuring wireless communication with the target cell, wherein the configuration information indicates that the target cell is not a Release-9 capable cell, and
- (ii) a notification indicating that the target cell does not support the second carrier, the notification comprising information enabling removal of the second active set.
6 more elements
An apparatus for communication in a wireless network, comprising:
- at least one processor;
- and
- a memory coupled to the at least one processor,
- wherein the at least one processor is configured to:
- establish communication with the wireless network utilizing a first carrier and a second carrier for each of an uplink and a downlink;
- maintain a first active set comprising a list of any cells in the wireless network that meet first criteria, the first active set corresponding to the first carrier;
- maintain a second active set comprising a list of any cells in the wireless network that meet second criteria, the second active set corresponding to the second carrier;
- report that a target cell meets third criteria;
- and
- receive, in response to reporting the target cell meets the third criteria,
- (i) configuration information from the wireless network for configuring wireless communication with the target cell, wherein the configuration information indicates that the target cell is not a Release-9 capable cell, and
- (ii) a notification indicating that the target cell does not support the second carrier, the notification comprising information enabling removal of the second active set.
9 more elements
Dependencies are inferred from the claim text.