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US 8,712,415 B2Granted
Timing and cell specific system information handling for handover in evolved UTRA
AssigneeInterDigital Patent Holdings, Inc.
InventorsGuodong Zhang, Jin Wang, Peter S. Wang, Stephen E. Terry
Life of this patent
Estimating the term…
Abstract
A method and apparatus for reducing handover time includes a wireless transmit receive unit receiving cell specific information in a downlink signal. The downlink signal is one of a set of signals included in a handover process.
Claims12
A method of handover in a wireless transmit/receive unit (WTRU), the method comprising:
- receiving a handover signal from a second evolved Node B (eNB) associated with a source cell, the handover signal including specific configuration except for a system frame number (SFN), of a first evolved Node B (eNB) associated with a target cell;
- initiating reception and processing of a primary broadcast channel (P-BCH) of the first eNB after receiving the handover command;
- implementing the configuration, at least in part, to the extent the SFN of the first eNB is not required, including deactivating layer 1 (L1) feedback;
- receiving the SFN of the first eNB;
- and
- further implementing the configuration utilizing the SFN of the first eNB, including activating L1 feedback.
3 more elements
A wireless transmit/receive unit (WTRU), comprising:
- a receiver configured to:
- receive a handover signal from a second evolved Node B (eNB) associated with a source cell, the handover signal including configuration information except for a system frame number (SFN), of a first evolved Node B (eNB) associated with a target cell;
- and
- at least one processor configured to:
- implement the configuration, at least in part, to the extent the SFN of the first eNB is not required, including deactivating discontinuous reception (DRX);
- and
- initiate reception and processing of a primary broadcast channel (P-BCH) of the first eNB after receiving the handover command, the receiver being further configured to receive the SFN of the first eNB, and the at least one processor also configured to further implement the configuration utilizing the SFN of the first eNB, including activating DRX.
4 more elements
A method of handover in a wireless transmit/receive unit (WTRU), the method comprising:
- receiving a handover signal from a second evolved Node B (eNB) associated with a source cell, the handover signal including specific configuration except for a system frame number (SFN), of a first evolved Node B (eNB) associated with a target cell;
- initiating reception and processing of a primary broadcast channel (P-BCH) of the first eNB after receiving the handover command;
- implementing the configuration, at least in part, to the extent the SFN of the first eNB is not required, including deactivating discontinuous reception (DRX);
- receiving the SFN of the first eNB;
- and
- implementing the configuration utilizing the SFN of the first eNB, including activating DRX.
3 more elements
A wireless transmit/receive unit (WTRU), comprising:
- a receiver configured to:
- receive a handover signal from a second evolved Node B (eNB) associated with a source cell, the handover signal including configuration information except for a system frame number (SFN), of a first evolved Node B (eNB) associated with a target cell;
- and
- at least one processor configured to:
- implement the configuration, at least in part, to the extent the SFN of the first eNB is not required, including deactivating layer 1 (L1) feedback;
- and
- initiate reception and processing of a primary broadcast channel (P-BCH) of the first eNB after receiving the handover command, the receiver being further configured to receive the SFN of the first eNB, and the at least one processor also configured to further implement the configuration utilizing the SFN of the first eNB, including activating L1 feedback.
4 more elements
Dependencies are inferred from the claim text.