摘要:
A base station is provided with an assignment unit 37 for assigning an access terminal identifier to an access terminal 21 of the base station, a memory unit for storing information to permit transition into a semi connected state where the access terminal 21 saves power, while the access terminal 21 holds the access terminal identifier, and a change unit, in a case where an access terminal among the access terminals 21 having the access terminal identifiers assigned thereto is using an application for which transition into the semi connected state is effective and an access terminal identifier assigned to the access terminal 21 is not permitted to transit into the semi connected state, for changing the access terminal identifier assigned to the access terminal 21 to an access terminal identifier permitted to transit into the semi connected state based on the information stored by the memory unit 46.
摘要:
An LTE base station 10-1 reserves uplink resource blocks for urgent communications and downlink resource blocks for urgent communications, when ETWS information is transmitted from a core network 30 to mobile terminals 40. The LTE base station 10-1 releases the uplink resource blocks for urgent communications and the downlink resource blocks for urgent communications when a predetermined time elapsed from the reservation of them and when an amount of calls between the LTE base station 10-1 and the mobile terminals 40 is at or below a fourth predetermined value.
摘要:
A base station 20 monitors change of a parameter for an adaptive array antenna, the parameter being used to control a directivity of a beam to be transmitted to a mobile terminal device 30. As a result, when detecting that a value indicating the change has fallen below a predetermined value, the base station 20 suppresses control of the directivity of a transmission signal. Moreover, the base station 20 transmits decrease information to the mobile terminal device 30, the decrease information indicating that the value indicating the change has fallen below the predetermined value. Upon receipt of the decrease information transmitted from the base station 20, the mobile terminal device 30 equalizes a signal to be transmitted to the base station 20 on the basis of a delay status of a reception signal received from the base station 20, and then transmits the equalized signal to the base station 20.
摘要:
A wireless communications system comprises a control apparatus (AA server) for controlling subscriber information, base stations (BS1, BS2), and mobile stations (MS1, MS2), wherein the control apparatus includes: a controlling unit for controlling priorities corresponding to fixed identifiers of mobile stations; the mobile station includes: a transmitting unit for transmitting the fixed identifier of a mobile station to a target base station, to which the mobile station is connected, when being connected to the base station; and the base station includes: a receiving unit for receiving the fixed identifier of a mobile station from the mobile station; and an allotting unit for allotting an identifier in an area corresponding to the priority of the corresponding mobile station to the mobile station on the basis of the received fixed identifier and control information of the controlling unit.
摘要:
In a CDMA protocol wireless telecommunication system that allows mixed use of single carrier terminals and multiple carrier terminals, a wireless telecommunication system that can improve the utilization efficiency of the frequencies is realized. A wireless base station, single carrier terminals, multiple carrier terminals are provided, and the frequency channels are formed by a plurality of time slots, and the base station sets a preamble signal that indicates the terminal allocated to a time slot. At the same time, preamble signals for a plurality of frequency channels are transmitted nonsimultaneously. The single carrier terminal receives the preamble signals by switching the plurality of frequency channels transmitted from the wireless base station, and detects the received time slots based on the received preamble signal.
摘要:
The present invention is summarized as a radio communication method including the steps of calculating a transmission power difference between a transmission power value of a first carrier and a transmission power value of a second carrier; determining whether or not the transmission power difference exceeds a threshold which indicates a maximum transmission power difference allowable between the first carrier and the second carrier; and decreasing a data rate for transmission via one of the first carrier and the second carrier that has the higher transmission power value when the transmission power difference exceeds the maximum transmission power difference.
摘要:
A base station 100 included in a first radio communication system includes: a monitor instruction unit 130 configured to instruct a mobile station 10 to monitor a reception power of an interference signal transmitted using a frequency assigned to a second radio communication system (frequency b) when the radio communication with the mobile station 10 performed using a frequency a is interrupted; and a handoff instruction unit 140 configured to instruct the mobile station 10 to switch the frequency used in the radio communication to a frequency e not interfered with by the interference signal, in accordance with the reception power monitored by the mobile station 10.
摘要:
In a base station device (30) for performing wireless communications with a plurality of mobile station devices (20) by using a frame that includes a plurality of uplink time slots and a plurality of downlink time slots that correspond to these uplink time slots, the base station device includes a time slot assignment part (37) for assigning to respective channels a time slot set constructed from uplink time slots and downlink time slots within a frame; and a part (39) for specifying, among the one or more channels to which a time slot set has been assigned by the time slot assignment part (37), channels that do not use uplink time slots whereby a channel that does not use an uplink time slot is specified. The time slot assignment part (37) assigns an uplink time slot assigned to the channel specified by the part (39) for specifying channels that do not use uplink time slots to a channel other than the specified channel.
摘要:
A sound communication system in which sound information is transmitted and received via an internet protocol network, has a terminal of a transmission side having an encoding unit which encodes the sound information at a predetermined section of a frame unit, and a packetizing unit which packetizes the sound data of the frame unit which is encoded in the encoding unit while thinning out a predetermined frame, and a terminal of a reception side having a receiving unit which receives the encoded sound data which is packetized, and a decoding unit which decodes the encoded sound data which is received by the receiving unit while complementing the encoded sound data which is received at the predetermined frame unit.
摘要:
A radio communication system comprises: a radio base station, a terminal device, and a plurality of relay devices that relay radio communication between the radio base station and the terminal device. The plurality of relay devices create communication quality information in radio communication between the relay devices and the radio base station. The terminal device preferentially connects to the relay device having the best communication quality based on each of the communication quality information.