Recovery of mobile station(s) in connected mode upon RNC failure
First Claim
1. A method of operating a radio access network which includes a radio network controller (RNC) node, the method comprising:
- (1) storing, at the radio network controller (RNC) node, context information for a user equipment unit in a Connected Mode; and
(2) initiating, at the radio network controller (RNC) node, transmission of a cell update-prompting message to the user equipment unit, the cell update-prompting message being addressed to the user equipment unit using the context information.
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Accused Products
Abstract
An enhanced radio network controller (RNC) node of a radio access network stores context information for a user equipment unit which is in a Connected Mode, and initiates a cell update-prompting message which is transmitted the user equipment unit. The stored context information is used by the context-enhanced radio network controller (RNC) node for addressing the cell update-prompting message to the user equipment unit. After the user equipment unit (which is in its Connected Mode) performs the prompted cell update procedure, such user equipment unit (UE) can be paged with a conventional paging message. The invention with its context-enhanced radio network controller (RNC) node is particularly suitable to user equipment units which are in a critical state of the Connected Mode, such as (for example) either a CELL_PCH state or a URA_PCH state of the Connected Mode.
150 Citations
63 Claims
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1. A method of operating a radio access network which includes a radio network controller (RNC) node, the method comprising:
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(1) storing, at the radio network controller (RNC) node, context information for a user equipment unit in a Connected Mode; and
(2) initiating, at the radio network controller (RNC) node, transmission of a cell update-prompting message to the user equipment unit, the cell update-prompting message being addressed to the user equipment unit using the context information. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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17. A method of recovery from at least partial loss, at a serving radio network controller (SRNC) node of a radio access network, of context information including a UTRAN Radio Network Temporary Identity (U-RNTI) for a user equipment unit a Connected Mode, the method comprising:
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storing, at a drift radio network controller (DRNC) node of the radio access network, the context information for the user equipment unit in a Connected Mode; and
initiating, at the drift radio network controller (DRNC) node, transmission of a cell update-prompting message to the user equipment unit, the cell update-prompting message being addressed to the user equipment unit using the context information. - View Dependent Claims (18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29)
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- 30. A radio access network which includes a radio network controller (RNC) node which stores context information for a user equipment unit in a Connected Mode and which initiates transmission of a cell update-prompting message to the user equipment unit, the cell update-prompting message being addressed to the user equipment unit using the context information.
- 47. A radio network controller (RNC) node of a radio access network, the radio network controller (RNC) node storing context information for a user equipment unit in a Connected Mode and initiating transmission of a cell update-prompting message to the user equipment unit, the cell update-prompting message being addressed to the user equipment unit using the context information.
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52. The apparatus of claim 52, wherein the radio network controller (RNC) node stores the international mobile subscriber identity (IMSI) of the user equipment unit uses the international mobile subscriber identity (IMSI) of the user equipment unit to determine a transmission occasion for the cell update-prompting message.
Specification