Timing of point-to-multipoint control channel information

Abstract

The present invention is directed to notifying a mobile terminal, on a control channel MCCH and an indication channel MICH during a modification period, the presence of control information on the control channel MCCH during a subsequent modification period. Specifically, the mobile terminal subscribes to at least one point-to-multipoint service, receives first point-to-multipoint control information related to a first point-to-multipoint service on a point-to-multipoint control channel during a first modification period, and receives notification information on the point-to-multipoint control during the first modification period for indicating the presence of second point-to-multipoint control information related to a second point-to-multipoint service during a second modification period.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS [0001] Pursuant to 35 U.S.C. § 119(e), this application claims the benefit of earlier filing date and right of priority to U.S. Provisional Application No. 60 / 601,267, filed on Aug. 12, 2004, the contents of which is hereby incorporated by reference herein in its entirety.FIELD OF THE INVENTION [0002] The present invention relates to indicating to a mobile terminal the presence of control information, and more particularly, to notifying a mobile terminal, on a control channel and an indication channel during a modification period, the presence of control information on the control channel during a subsequent modification period. BACKGROUND OF THE INVENTION [0003] Recently, mobile communication systems have developed remarkably, but for high capacity data communication services, the performance of mobile communication systems cannot match that of existing wired communication systems. Accordingly, technical developments for IMT-2000, which is a ...

AI Technical Summary

Benefits of technology

[0078] To achieve these and other advantages and in accordance with the purpose of the present invention, as embodied and broadly described, the present invention is embodied in a method for receiving a point-to-multipoint service in a wireless communication system, the method comprising subscribing to at least one point-to-multipoint service; receiving first point-to-multipoint control information related to a first point-to-multipoint service on a point-to-multipoint control channel during a first modification period, and receiving notification information on the point-to-multipoint control channel during the first modification period for indicating the presence of second point-to-multipoint control information related to a second point-to-multipoint service during a second modification period. Preferably, the point-to-multipoint control channel is not a point-to-multipoint indication channel.

[0085] In one aspect of the invention, the method further comprises transmitting the notification information on a point-to-multipoint indication channel during the first modification period.

Problems solved by technology

Recently, mobile communication systems have developed remarkably, but for high capacity data communication services, the performance of mobile communication systems cannot match that of existing wired communication systems.

The different possibilities that exist for the mapping between the radio bearers and the transport channels are not always possible.

Specifically, the core network can only detect the existence of idle mode terminals within a region that is larger than a cell, such as a location or a routing area.

However, the radio resources are limited.

Thus, the UE consumes few radio resources.

However, the data rate available is very limited.

Thus, UE battery consumption is increased in the case where the UE is not transmitting.

Furthermore, the UE can only access the network after performing a Cell Update procedure which introduces additional delays when the UE wants to send data to the UTRAN.

Accordingly, it increases complexity for the UE to additionally read BCCH channels.

A cell broadcast service provided by the prior art is limited to a service in which text type short messages are broadcast to a certain area.

However, a problem arises when the UE wants to stop reading the MCCH.

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