According to one embodiment, a method of performing a re-establishment procedure in a mobile communication system includes: receiving at least one packet data convergence protocol (PDCP) control plane data unit; performing an integrity check on the at least one PDCP control plane data unit; identifying an integrity check failure with regard to the at least one PDCP control plane data unit; and performing a re-establishment procedure if the integrity check failure is identified to exist with regard to the at least one PDCP control plane data unit.

Method for detecting security error in mobile telecommunications system and device of mobile telecommunications

A method of allocating radio resources in a wireless communication system is disclosed. In one aspect of the present invention, in a wireless communication system, a user equipment requests a base station to allocate radio resources for uplink data transmission of at least one time in accordance with a first radio resource allocation request mode. The user equipment requests the base station to allocate the radio resources for uplink data transmission in accordance with a second radio resource allocation request mode if a predetermined condition is satisfied.

method of allocating radio resouces in a wireless communication system

Disclosed is a radio (wireless) communication system providing a radio communication service and the terminal, and more particularly, to a method for re-attempting a rapid random access when a problem occurs in the random access procedure in an Evolved Universal Mobile Telecommunications System (E-UMTS) evolved from the Universal Mobile Telecommunications System (UMTS) or a Long Term Evolution (LTE) system.

Method for re-attempting a random access effectively

A method of transmitting and receiving control information in a wireless communication system is disclosed. The method of receiving control information related to a specific point-to-multipoint service in a user equipment of a wireless communication system comprises receiving a notification message including indication information and an identifier identifying the point-to-multipoint service from a network, the indication information indicating at least one downlink channel related to the specific point-to-multipoint service among a plurality of downlink channels established for transmission of control information for at least one or more point-to-multipoint service, and receiving at least one downlink channel indicated by the indication information.

Method of transmitting and receiving control information in a wireless communication system

A method of performing random access procedure in a wireless communication system is disclosed. The present invention includes the steps of receiving a first message transmitted to count the number of user equipments attempting to receive the broadcast/multicast service from a network, transmitting a preamble for a random access to the network, receiving a second message including a user equipment identifier for identifying the user equipment and uplink (UL) radio resource allocation information in response to the preamble from the network, transmitting a third message to the network using the uplink radio resource allocation information, and stopping the random access in case of receiving a contention resolution message from the network.

A random access method for multimedia broadcast multicast service(mbms)

A device for wirelessly communicating a service to user equipment is provided. The device includes a transmitter, a receiver, and a processor. The processor is programmed to promote the transmitter polling to determine whether user equipment desire a service and responsive to receiving, via the receiver, at least one user equipment request for the service, the processor programmed to promote the transmitter providing a point-to-multipoint (PTM) broadcast of the service.

Polling method and apparatus for long term evolution multimedia broadcast multicast services

User equipment for long term evolution (LTE) multimedia broadcast multicast services

A device (204) for wirelessly communicating a service to user equipment (206) is provided. The device (204) includes a transmitter and receiver (392), and a processor (382). The processor (382) is programmed to promote the transmitter (392) polling to determine whether user equipment 206 desire a service and responsive to receiving, via the receiver (392), at least one user equipment (206) request for the service, the processor (382) programmed to promote the transmitter (392) providing a point-to-multipoint (PTM) broadcast of the service.

Zhijun Cai

Papers

Polling method and apparatus for long term evolution multimedia broadcast multicast services

User equipment for long term evolution (LTE) multimedia broadcast multicast services

Polling method and apparatus for long term evolution (LTE) multimedia broadcast multicast services