A method of performing power control in a mobile communication system is disclosed. In the method, power control information is transmitted to a terminal by using a terminal power control threshold of the terminal being changed in due consideration of a communication circumstance in case of that a high-speed data transmission terminal is scheduled during receiving low-speed and voice data from the terminal.

A mobile station apparatus 101-1 detects and reports a reception quality value of a known signal transmitted from a base station apparatus 102-1. Base station apparatus 102-1 has a quality deficiency signal generation section 1021 that compares the reception quality value with a predetermined threshold value and generates a quality deficiency signal when it is shown that the reception quality value is less than the predetermined threshold value, and a quality deficiency signal reporting section ...

A slave radio station establishes communization with a master radio station by transmitting a signal intermittently, listening for a response, and saving power by deactivating its transmitter and receiver at other times. When the master radio station responds, the slave station may synchronize periods of receiver activation with a beacon signal transmitted periodically by the master station and may cease transmission of the intermittent signal.

A mobile communication system comprises an access router configured to assign a routing address to a transient address when receiving a user data packet including the transient address is set to a source address from a mobile terminal connecting to the access router and store a correspondence between the transient address and the routing address, and a management device configured to judge whether or not a handover is carried out by judging whether or not an existing routing address assigned to ...

According to the present invention a method for implementing connection access authorization between a first entity and a second entity in a communication system comprising at least one closed user group is disclosed. The method comprises the steps of storing a table (DB3) of special identifications for an entity belonging to a closed user group, receiving a connection request, a) checking (12) whether the connection is within a closed user group, b) checking (13) whether all connections across ...

The present invention discloses an antenna diversity switch, used for receiving and transmitting RF signals for dual-mode co-existence wireless communication system. The antenna diversity switch comprises a first transmitting port; a second transmitting port; a receiving port; a first control unit, electrically connected between the first transmitting port and a first antenna; a second control unit, electrically connected between the first transmitting port and a second antenna; a third control ...

A method is directed to operating a degraded vehicle communication unit within a mobile vehicle communication system (MVCS). The method provides for determining a primary communication mode failure, initiating a secondary communication mode responsive to the primary communication mode failure determination, and operating a telematics device in the secondary communication mode within the vehicle communication unit. The step of determining the primary communication mode failure may include detecti...

A handheld electronic device comprising: a memory device and a processor. The memory device is temporarily removable from the handheld electronic device for connection with another device. The removable memory device includes a data base structure in which a secret is associated with a predetermined identifier, such that querying the database structure using the predetermined identifier returns the secret. The removable memory device also includes an interface that enables the handheld electroni...

A method, a node and an energy-conserving ad hoc network are provided that facilitate nodes joining the energy-conserving ad hoc network. A node includes a transceiver (210), a transmitter (206), and processing logic (202). The processing logic (202) is configured to control operation of the transceiver (210) and the transmitter (206). The processing logic (202) is further configured to transmit a wake-up signal via the transmitter (206) and receive a network entry message (600) from one of a gr...

A control message transmitting/receiving method in an MBMS-supporting mobile communication system. In the present invention, an RNC periodically transmits control messages related to MBMS RB setup to UEs. Thus, although a UE initially fails to receive an intended MBMS service, it can set up an MBMS RB by receiving a related retransmitted control message. Also, the RNC periodically provides information about ongoing MBMS services on a cell basis so that a UE can decide whether its requested MBMS ...