US 2004/0202140 A1 · Method for cell reselection in an MBMS mobile communication system

Abstract

A cell reselection method by a user equipment (UE) receiving an MBMS service in a serving cell of a mobile communication system. The UE receives control data of the serving cell, including configuration information necessary for accessing MBMS control channels (MCCHs) of neighbor cells and control information necessary for accessing an MBMS data transport channel (MTCH) of the serving cell, over an MCCH of the serving cell, and stores the received control data, while the MBMS service is provided in the serving cell. If cell reselection to a target cell, which is one of the neighbor cells is determined, the UE moves to the target cell by utilizing configuration information stored for the target cell.

Claims29

Dependent claims

A cell reselection method by a user equipment (UE) receiving a Multimedia Broadcast/Multicast Service (MBMS) service in a serving cell of a mobile communication system including a plurality of cells and providing the MBMS service, the method comprising the steps of:

receiving a control data of the serving cell, including configuration information necessary for accessing MBMS control channels (MCCHs) of neighbor cells and control information necessary for accessing an MBMS data transport channel (MTCH) of the serving cell, over an MCCH of the serving cell, and storing the received control data;
and
if cell reselection to a target cell, which is one of the neighbor cells, is determined, moving to the target cell by utilizing the configuration information stored for the target cell.

A cell reselection method by a user equipment (UE) receiving a Multimedia Broadcast/Multicast Service (MBMS) service in a serving cell in a mobile communication system including a plurality of cells and providing the MBMS service, the method comprising the steps of:

if candidate cells for cell reselection are identified while an MBMS service is provided in the serving cell, receiving first system information of the candidate cells including scheduling information necessary for accessing MBMS control channels (MCCHs) of the candidate cells, and second system information of the candidate cells related to a code channel to which the MCCHs of the candidate channels are mapped;
receiving control information necessary for accessing MBMS data transport channels (MTCHs) of the candidate cells over the MCCHs of the candidate channels, using the first and second system information;
storing the received control information;
and
if cell reselection to a target cell, which is one of the candidate cells, is determined, moving to the target cell by utilizing the control information stored for the target cell.

2 more elements

Dependencies are inferred from the claim text.

Method for cell reselection in an MBMS mobile communication system

Life of this patent

Method for cell reselection in an MBMS mobile communication system

Life of this patent

Abstract

Claims29