摘要:
A base station includes a center frequency setting unit, a local oscillator, a baseband processor, and an RF processor. In the event of a frequency band change, the center frequency setting unit sets a center frequency of a use frequency channel to have a predetermined offset value with respect to a center frequency before the frequency band change. The local oscillator generates an LO frequency signal according to the center frequency set by the center frequency setting unit. The baseband processor generates a downlink baseband signal. The RF processor uses the LO frequency signal to convert the downlink baseband signal into an RF signal prior to transmission.
摘要:
A system and method for providing a service in a communication system are provided, in which upon receipt of a request for provisioning of the service with a requested QoS class from an MS, a service server transmits a QoS information request message to an interface server and, upon receipt of a QoS information response message for the QoS information request message from the interface server, the service server provides the service with the requested QoS class to the MS.
摘要:
A QoS-based call admission system and method for a mobile communication system. To establish a call for a mobile station according to the QoS of the call, upon request of setup of a call requiring a QoS guarantee, a base transceiver station determines whether a channel element is available. In the presence of an available channel element, the base transceiver station determines whether a remaining bandwidth can support a data rate required to guarantee the QoS. If the data rate is supported, the base transceiver station assigns the channel element and connects its intra switch to a base station controller. Then the base transceiver station transmits a call accept response signal to the base station controller.
摘要:
A method is provided for providing a multimedia content type ring-back by an origination terminal in a communication system. The method includes providing a multimedia content type ring-back including menu keys mapped to services; and providing a service mapped to a particular menu key, upon receipt of the particular menu key while providing the multimedia content type ring-back. Further, a method is provided for providing a multimedia content type bell by a destination terminal in a communication system. The method includes providing a multimedia content type bell including menu keys mapped to services; and providing a service mapped to a particular menu key, upon receipt of the particular menu key while providing the multimedia content type bell.
摘要:
A system and method provide calling and called terminals with multimedia alerting signals such as a ringtone and ringback tone. When desiring to receive first multimedia portal contents as a multimedia alerting signal, the calling terminal presets the first multimedia portal contents and makes a call connection setup request. When desiring to provide second multimedia portal contents as a ringback tone, a called terminal presets the second multimedia portal contents and notifies that the ringtone and ringback tone are set. A Personal Internet Protocol Multimedia Subsystem (IMS) Portal (PIP) server receives call connection setup-related signals from the calling and called terminals, decides to provide particular multimedia portal contents as the ringback tone according to a predefined priority decision criterion when the calling and called terminals set the multimedia portal contents, and provides the set multimedia portal contents.
摘要:
A system and method for providing an Internet Protocol (IP)-based service in a communication system are provided. In an IP Multimedia Subsystem (IMS) communication system, a menu server generates a service object based on service capability information of a subscriber received from a service provider, and a terminal activates the service object received from the menu server so that the subscriber can easily use services. The user can select one of services from a service menu displayed on the terminal and immediately implement the selected service.
摘要:
A system includes a first base station (BS) adapted to generate, upon detecting an access request signal for a second BS and transmitted from a mobile terminal (MT), an access detection message indicating the detection, and a network element coupled between the first and second BS and adapted to receive the access detection message. The second BS is adapted to receive the access detection message from the network element.
摘要:
A device and method for communicating voice data in packet form in a mobile communication system. In the packet voice data communication method, upon generation of voice data, a packet voice channel is assigned, and an active state is entered where packetized voice data is transmitted on the voice channel. If there is no voice data for a predetermined time period while in the active state, the assigned voice channel is released, and an inactive state is entered where no voice data is transmitted. If the next voice data is generated while in the inactive state, the voice channel active state is entered where a voice channel is assigned to transmit the next voice data, and the voice data is transmitted.
摘要:
Disclosed is a base station device and method for supporting communication service for a mobile station which is located in a cell divided into a plurality of sectors. The device and method comprise a receiver for receiving a signal, which is transmitted from the mobile station, through multiple paths via the plurality of sectors, and demodulating and outputting the received signal; and a combiner for combining and outputting signals output from the receiver.
摘要:
A packet data processing device for a mobile communication system. A base station includes a channel status information receiver for receiving channel status information for a forward channel from a mobile station; a supplemental channel transmission controller for determining a bit rate of the mobile station according to the channel status information, a supplemental channel transmitter for transmitting data to the mobile station at the bit rate determined by the supplemental channel transmission controller; and a rate indicator transmitter for generating a rate indicator having information about the determined bit rate and transmitting the generated rate indicator to the mobile station. The mobile station includes a channel status measurer for detecting power of a signal received over a pilot channel to measure channel status; a channel status information transmitter for generating channel status information according to the measured channel status and transmitting the channel status information to a base station; and a supplemental channel receiver for detecting a bit rate of data transmitted at a variable rate from the base station and receiving data at the detected bit rate.