RANDOM ACCESS PROCEDURE FOR HANDOVER
First Claim
1. A multi-radio access technology (multi-RAT) user equipment (UE) operable to switch from a wireless local area network (WLAN) to a wireless wide area network (WWAN), the UE having one or more processors configured to:
- receive WLAN-specific dedicated physical random access channel (PRACH) allocation information from an evolved node B (eNB) to enable the multi-RAT UE to perform an inter-RAT WLAN-to-WWAN handover; and
initiate the inter-RAT WLAN-to-WWAN handover at the multi-RAT UE by performing random access with the eNB using the WLAN-specific dedicated PRACH allocation information.
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Accused Products
Abstract
Technology for switching from a wireless local area network (WLAN) to a wireless wide area network (WWAN) is disclosed. A multi-radio access technology (multi-RAT) user equipment (UE) can receive WLAN-specific dedicated physical random access channel (PRACH) allocation information from an evolved node B (eNB) to enable the multi-RAT UE to perform an inter-RAT WLAN-to-WWAN handover. The multi-RAT UE can initiate the inter-RAT WLAN-to-WWAN handover at the multi-RAT UE by performing random access with the eNB using the WLAN-specific dedicated PRACH allocation information.
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Citations
24 Claims
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1. A multi-radio access technology (multi-RAT) user equipment (UE) operable to switch from a wireless local area network (WLAN) to a wireless wide area network (WWAN), the UE having one or more processors configured to:
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receive WLAN-specific dedicated physical random access channel (PRACH) allocation information from an evolved node B (eNB) to enable the multi-RAT UE to perform an inter-RAT WLAN-to-WWAN handover; and initiate the inter-RAT WLAN-to-WWAN handover at the multi-RAT UE by performing random access with the eNB using the WLAN-specific dedicated PRACH allocation information. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A method for facilitating wireless local area network (WLAN) to wireless wide area network (WWAN) handover, the method comprising:
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sending WLAN-specific physical random access channel (PRACH) configuration information from an evolved node B (eNB) to a user equipment (UE), the WLAN-specific PRACH configuration information for WLAN-to-WWAN handover at the UE; receiving, at the eNB from the UE, a handover request message to switch the UE from operating over the WWAN to operating over the WLAN; sending a handover response message from the eNB to the UE, the handover response including WLAN-specific dedicated PRACH allocation information, the UE transitioning into operating over the WLAN upon receiving the handover response message from the eNB; and facilitating the WLAN-to-WWAN handover for the UE, the UE initiating the WLAN-to-WWAN handover by performing at least one of time division multiplexing (TDM) or code division multiplexing (CDM) based random access using the WLAN-specific dedicated PRACH allocation information. - View Dependent Claims (14, 15, 16, 17, 18, 19)
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20. A user equipment (UE) operable to switch from a wireless local area network (WLAN) to a wireless wide area network (WWAN), the UE comprising:
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a communication module configured to receive time division multiplexing (TDM)-based WLAN-specific dedicated physical random access channel (PRACH) allocation information from an evolved node B (eNB) to enable the UE to perform the WLAN-to-WWAN handover, wherein the communication module is stored in a digital memory device or is implemented in a hardware circuit; and a handover module configured to initiate the WLAN-to-WWAN handover at the UE by performing TDM-based non-contention based random access with the eNB using the WLAN-specific dedicated PRACH allocation information, wherein the handover module is stored in a digital memory device or is implemented in a hardware circuit. - View Dependent Claims (21, 22, 23, 24)
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Specification