摘要:
A radio base station according to the present invention includes: a determiner determining a transfer rate of data transferred from the radio network controller to the radio base station, based on a predetermined bandwidth of a wired transmission path, a bandwidth of the wired transmission path not being used, and a bandwidth of the wired transmission path being used by the mobile station; and a notifier notifying the radio network controller of the determined transfer rate.
摘要:
Each of a plurality of frequencies defines a combination of at least one uplink from among a plurality of types of uplink radio access, and at least one downlink from among a plurality of types of downlink radio access. A base station (100a) includes an evaluation point calculation unit (150) which calculates the uplink evaluation points for each of the plurality of frequencies based on the uplink parameters contributing to the uplink throughput, and calculates the downlink evaluation points for each of the plurality of frequencies based on the downlink parameters contributing to the downlink throughput, and a selection unit (160) which selects the frequency to be used by the radio terminal of frequency selection target from among the plurality of frequencies, based on the uplink evaluation points and the downlink evaluation points.
摘要:
A BTS 100 includes a MAC-hs processing unit configured to determine if the priority of a communication to be executed for the communication request received is equal to or higher than a predetermined priority, and a HARQ process control unit 121 configured to assign a priority communication to be executed for the communication request to the retransmission processes in preference to other communications if the determination unit determines that the priority is equal to or higher than the predetermined priority. In a case where all the retransmission processes are occupied by the other communications, the HARQ process control unit 121 discards some of the packets stored in a HARQ buffer, based on the number of the retransmission processes required for executing the priority communication.
摘要:
A base station includes a scheduling unit 120a and a call admission control unit 120b. The scheduling unit 120a includes a first determination unit 126 to determine whether or not a transmission frequency of transmission rate control data for decreasing transmission rate for uplink data is equal to or higher than a transmission frequency threshold, a second determination unit 127 to determine whether or not a counted number value of rate lowering event occurrences exceeds a counted number threshold, the rate lowering event being an event that decreases transmission rate for uplink data, and a setting unit 128 to set admission permission information to information for limiting an admission of a new call in a case where the transmission frequency is equal to or higher than the predetermined frequency, and where the counted number value of rate lowering event occurrences exceeds the counted number threshold. The call admission control unit 120b determines whether or not to permit the admission of a new call based on the admission permission information set by the scheduling unit 120a.
摘要:
A receiving apparatus (10) provided with: a management unit (13) configured to manage a target error rate Pt in a target number of retransmission Nt; a measurement unit (14) configured to measure the initial transmission rate TPUTinit of the data at a transmitting apparatus (10); and a calculation unit (15) configured to calculate, with respect to an error rate P(n) in a number of retransmission n, the reception rate TPU of data at a receiving apparatus (10) by a Equation (2A). TPUT = TPUT init Nt + Pt + 1 . [ Equation 2 A ]
摘要:
A radio base station (200) transmits TPC bits (+1) or TPC bits (−1) to a mobile station at predetermined time intervals in order to approximate the reception quality of a radio signal to a target reception SIR, said TPC bit (+1) increasing the transmission power of the radio signal just by a given step, and said TPC bit (−1) decreasing the transmission power of the radio signal just by a given step. The radio base station (200) is provided with: a TPC bit monitoring unit (211) which monitors whether the ratio of TPC bits (+1) transmitted in the predetermined period exceeds n %; and a TPC bit adjustment unit (213) which transmits the TPC bits (−1) consecutively Y times at the time intervals, when it is detected that the ratio has exceeded n %.
摘要:
A receiving apparatus (10) provided with: a management unit (13) configured to manage a target error rate Pt in a target number of retransmission Nt; a measurement unit (14) configured to measure the initial transmission rate TPUTinit of the data at a transmitting apparatus (10); and a calculation unit (15) configured to calculate, with respect to an error rate P(n) in a number of retransmission n, the reception rate TPU of data at a receiving apparatus (10) by a Equation (2A). TPUT = TPUT init Nt + Pt + 1 . [ Equation 2 A ]
摘要:
A base station includes a scheduling unit 120a and a call admission control unit 120b. The scheduling unit 120a includes a first determination unit 126 to determine whether or not a transmission frequency of transmission rate control data for decreasing transmission rate for uplink data is equal to or higher than a transmission frequency threshold, a second determination unit 127 to determine whether or not a counted number value of rate lowering event occurrences exceeds a counted number threshold, the rate lowering event being an event that decreases transmission rate for uplink data, and a setting unit 128 to set admission permission information to information for limiting an admission of a new call in a case where the transmission frequency is equal to or higher than the predetermined frequency, and where the counted number value of rate lowering event occurrences exceeds the counted number threshold. The call admission control unit 120b determines whether or not to permit the admission of a new call based on the admission permission information set by the scheduling unit 120a.
摘要:
A communication terminal that receives at least one of image data and audio data from at least one other communication terminal via a network, the communication terminal including circuitry to generate log data in response to occurrence of an event at the communication terminal, and transmit the generated log data to an accumulation apparatus each time the event occurs.
摘要:
A cartridge for housing a recording medium therein. The cartridge includes a cartridge body configured such that a signal recording apparatus can record a signal onto the recording medium when the cartridge is loaded in the signal recording apparatus. The cartridge also includes an opening in the cartridge body for removing the recording medium from the cartridge body, and a cover covering the opening. An indicator on the cartridge body indicates whether the cover has ever been opened or removed from the cartridge body.