Cellular communication system, apparatus and method for handover
First Claim
1. A method for handover of a wireless subscriber communication unit from a first base station to a second base station in a wireless network, the method comprising at the first base station:
- receiving an acknowledgement message from the wireless subscriber communication unit that it is to be handed over to the second base station; and
sending a scheduling request message to the second base station, in response to the acknowledgement message to request a channel for a subsequent handover confirmation message to be sent from the wireless subscriber communication unit.
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Accused Products
Abstract
A method for handover of a wireless subscriber communication unit from a first base station to a second base station in a wireless network is described. The method comprises at the wireless subscriber communication unit receiving a handover command message from the first base station. At the first base station, the method comprises sending a scheduling request message to the second base station, in response to an acknowledgement message sent from the wireless subscriber communication unit. The method further comprises, at the second base station, scheduling, in response to the scheduling request message, at least one uplink scheduling resource (UL-SCH) for the wireless subscriber communication unit to transmit a handover (HO) confirmation message to the second base station; and receiving a handover confirmation message from the wireless subscriber communication unit on the at least one uplink scheduling resource (UL-SCH).
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Citations
60 Claims
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1. A method for handover of a wireless subscriber communication unit from a first base station to a second base station in a wireless network, the method comprising at the first base station:
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receiving an acknowledgement message from the wireless subscriber communication unit that it is to be handed over to the second base station; and sending a scheduling request message to the second base station, in response to the acknowledgement message to request a channel for a subsequent handover confirmation message to be sent from the wireless subscriber communication unit. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A method for handover of a wireless subscriber communication unit from a first base station to a second base station in a wireless network, the method comprising at the second base station:
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receiving from the first base station, a scheduling request message to request a channel for a subsequent handover confirmation message to be sent from the wireless subscriber communication unit; and scheduling, in response to the scheduling request message, at least one uplink scheduling resource (UL-SCH) for the wireless subscriber communication unit to transmit a handover (HO) confirmation message to the second base station. - View Dependent Claims (9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
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20. A method for handover of a wireless subscriber communication unit from a first base station to a second base station in a wireless network, the method comprising at the wireless subscriber communication unit:
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receiving a handover command message from the first base station; receiving at least one uplink scheduling resource (UL-SCH) on a control channel for communicating with the second base station; transmitting a handover confirmation message to the second base station on the at least one uplink scheduling resource (UL-SCH); and transmitting uplink data to the second base station in a cell supported by the second base station. - View Dependent Claims (21, 22, 23, 24, 25, 26, 27)
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28. A base station capable of handover of a wireless subscriber communication unit to a second base station in a wireless network, the base station comprising:
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logic for receiving an acknowledgement message from the wireless subscriber communication unit that it is to be handed over to the second base station; and logic for sending a scheduling request message to the second base station, in response to the acknowledgement message to request a channel for a subsequent handover confirmation message to be sent from the wireless subscriber communication unit. - View Dependent Claims (29, 30, 31, 32, 33, 34)
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35. A base station capable of receiving a communication handover of a wireless subscriber communication unit from a first base station in a wireless network, the base station comprising:
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logic for receiving from the first base station, a scheduling request message to request a channel for a subsequent handover confirmation message from the wireless subscriber communication unit; and logic for scheduling, in response to the scheduling request message, at least one uplink scheduling resource (UL-SCH) for the wireless subscriber communication unit to transmit a handover (HO) confirmation message to the base station. - View Dependent Claims (36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46)
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47. A wireless subscriber communication unit capable of handover from a first base station to a second base station in a wireless network, the wireless subscriber communication unit comprising:
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logic for receiving a handover command message from the first base station; logic for receiving at least one uplink scheduling resource (UL-SCH) on a control channel for communicating with the second base station; logic for transmitting a handover confirmation message to the second base station on the at least one uplink scheduling resource (UL-SCH); and logic for transmitting uplink data to the second base station in a cell supported by the second base station. - View Dependent Claims (48, 49, 50, 51, 52, 53, 54)
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55. Logic for handover of a wireless subscriber communication unit from a first base station to a second base station in a wireless network, the logic comprising executable program code, the program code operable for:
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receiving an acknowledgement message from the wireless subscriber communication unit that it is to be handed over to the second base station; and sending a scheduling request message to the second base station, in response to the acknowledgement message to request a channel for a subsequent handover confirmation message to be sent from the wireless subscriber communication unit.
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56. Logic for handover of a wireless subscriber communication unit from a first base station to a second base station in a wireless network, the logic comprising executable program code, the program code operable for:
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receiving from the first base station, a scheduling request message to request a channel for a subsequent handover confirmation message to be sent from the wireless subscriber communication unit; and scheduling, in response to the scheduling request message, at least one uplink scheduling resource (UL-SCH) for the wireless subscriber communication unit to transmit a handover (HO) confirmation message to the second base station.
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57. Logic for handover of a wireless subscriber communication unit from a first base station to a second base station in a wireless network, the logic comprising executable program code, the program code operable for:
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receiving a handover command message from the first base station; receiving at least one uplink scheduling resource (UL-SCH) on a control channel for communicating with the second base station; transmitting a handover confirmation message to the second base station on the at least one uplink scheduling resource (UL-SCH); and transmitting uplink data to the second base station in a cell supported by the second base station.
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58. A cellular communication system comprising a base station capable of handover of a wireless subscriber communication unit to a second base station in a wireless network, the base station comprising:
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logic for receiving an acknowledgement message from the wireless subscriber communication unit that it is to be handed over to the second base station; and logic for sending a scheduling request message to the second base station, in response to the acknowledgement message to request a channel for a subsequent handover confirmation message to be sent from the wireless subscriber communication unit.
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59. A cellular communication system comprising a base station capable of handover of a wireless subscriber communication unit to a second base station in a wireless network, the base station comprising:
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logic for receiving from the first base station, a scheduling request message to request a channel for a subsequent handover confirmation message to be sent from the wireless subscriber communication unit; and logic for scheduling, in response to the scheduling request message, at least one uplink scheduling resource (UL-SCH) for the wireless subscriber communication unit to transmit a handover (HO) confirmation message to the base station.
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60. A cellular communication system comprising a base station capable of handover of a wireless subscriber communication unit to a second base station in a wireless network, the wireless subscriber communication unit comprising:
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logic for receiving a handover command message from the first base station; logic for receiving at least one uplink scheduling resource (UL-SCH) on a control channel for communicating with the second base station; logic for transmitting a handover confirmation message to the second base station on the at least one uplink scheduling resource (UL-SCH); and logic for transmitting uplink data to the second base station in a cell supported by the second base station.
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Specification