Method and apparatus for providing multimedia broadcast/multicast service according to mobility of user equipment
First Claim
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1. A method of providing a multimedia broadcast/multicast service (MBMS) service to user equipment (UE) in a serving radio network controller (SRNC), the method comprising:
- detecting movement of the UE from a first cell to a second cell, the UE configured to receive the MBMS service;
requesting setup or addition of a radio link for the UE to a drift radio network controller (DRNC) which controls the second cell;
receiving preferred frequency layer (PFL) information indicating the PFL of at least one MBMS service which the UE has joined and of which the session has started from the DRNC; and
transmitting the received PFL information to the UE.
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Abstract
A method and apparatus for notifying a UE of the PFLs of MBMS services in a new cell when the UE moves from an old cell to a new cell in a CELL_DCH state in the case of FLC are provided. An SRNC informs the UE of the PFLs of UE-joined MBMS services in the new cell. If the new cell is managed by a DRNC, the DRNC informs the SRNC of the PFLs of the UE-joined MBMS services and the SRNC transmits the PFL information to the UE so that the UE can move to a corresponding PFL.
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Citations
24 Claims
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1. A method of providing a multimedia broadcast/multicast service (MBMS) service to user equipment (UE) in a serving radio network controller (SRNC), the method comprising:
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detecting movement of the UE from a first cell to a second cell, the UE configured to receive the MBMS service;
requesting setup or addition of a radio link for the UE to a drift radio network controller (DRNC) which controls the second cell;
receiving preferred frequency layer (PFL) information indicating the PFL of at least one MBMS service which the UE has joined and of which the session has started from the DRNC; and
transmitting the received PFL information to the UE. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A method of providing a multimedia broadcast/multicast service (MBMS) service to user equipment (UE) in a drift radio network controller (DRNC), the method comprising:
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receiving a radio link setup or addition request for the UE from a serving radio network controller (SRNC) when the UE moves to a cell controlled by the DRNC while receiving the MBMS service;
checking preferred frequency layer (PFL) information indicating the PFL of at least one MBMS service which the UE has joined and of which the session has started; and
transmitting the PFL information to the SRNC. - View Dependent Claims (10, 11, 12, 13, 14)
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15. A serving radio network controller (SRNC) for providing a multimedia broadcast/multicast service (MBMS) service to user equipment (UE), comprising:
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a UE mobility manager for detecting movement of the UE to a new cell controlled by a drift radio network controller (DRNC), the UE configured to receive the MBMS service and determining whether the new cell is managed by the UE mobility manager;
an interface for transmitting a radio link setup or addition request message to the DRNC and receiving a response message comprising preferred frequency layer (PFL) information indicating the PFL of at least one MBMS service which the UE has joined and of which the session has started in the new cell from the DRNC;
a frequency layer convergence (FLC) controller for managing the PFL information; and
a radio link control (RRC) transmitter and receiver for transmitting the PFL information to the UE. - View Dependent Claims (16, 17, 18, 19, 20)
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21. A drift radio network controller (DRNC) for providing a multimedia broadcast/multicast service (MBMS) service to user equipment (UE), comprising:
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an interface for receiving a radio link setup or addition request message for the UE from a serving radio network controller (SRNC) when the UE moves to a new cell controlled by the DRNC and transmitting to the SRNC a response message comprising preferred frequency layer (PFL) information indicating the PFL of at least one MBMS service which the UE has joined and of which the session has started;
a UE context manager for managing a UE context comprising the PFL information;
a radio link manager for receiving the radio link setup or addition request from the interface and providing the PFL information to the interface; and
a radio transmitter and receiver for setting up or adding a radio link for the UE upon request of the radio link manager and transmitting MBMS service data to the UE on the radio link. - View Dependent Claims (22, 23, 24)
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Specification