摘要:
An object of the present invention is to reduce the control time required when a channel handover is performed in a mobile communication system. The conventional system has such shortcomings that a long time is required for re-designating a channel when a channel handover procedure results in failure. Particularly, in the common access type system, there is such a problem that since a channel handover is required to be performed several times during a channel handover procedure, an extra time is required for performing the handover procedure. The present invention has a plurality of base stations for covering the service area, and a mobile station for performing a communication with the base stations through radio channels. Here, the present invention is characterized in that the base stations notify the mobile station of a plurality of candidates when the mobile station performs a handover procedure, thereby improving the problem inherent in the conventional system that a single candidate is notified when a channel handover procedure is performed. Therefore, the present invention makes it possible to change the channel to the next candidate channel at high speed when the previous channel handover procedure results in failure.
摘要:
A communication path switching system comprises a wireless base station (21) having a function of wireless communication with a mobile station (11) and a function of relaying data transmitted from the mobile station over a wireless communication path; and plural transmission apparatuses (41, 841) having a function of wired communication with the wireless base station and capable of establishing respectively a wired communication path to be used to relay the data transmitted from a mobile station toward another mobile station. One wired communication path from the wireless base station (21) to one transmission apparatus (841) is switched to another wired communication path from the wireless base station (21) to another transmission apparatus (41) without re-establishing a wireless communication path between the mobile station and the wireless base station.
摘要:
A transmission process restriction method according to the present invention includes the steps of transmitting a notification information notifying of a restriction rate for each access class and a restriction rate for each traffic class, causing the mobile station to determine a restriction rate of the mobile station on the basis of the notification information received by the mobile station, an access class of the mobile station, and a traffic class of the mobile station, causing the mobile station to compare a random number generated by the mobile station to the restriction rate of the mobile station, and causing the mobile station to decide whether or not to block the connection request transmission processing in accordance with a result of the comparison.
摘要:
Disclosed is a mobile communication system whereby, to reduce the connection time, a mobile station closely located to a base wireless station is permitted to continue to use a common channel for exchanging signals, and to suppress an increase in interference, an individual channel is set for a mobile station located near the edge of a cell, and to obtain a stabilized communication quality and to prevent an increase in the connection time, the probability that the transmission power will reach an upper limit is reduced. When communication between a mobile station and a wireless base station is started, the wireless base station measures the transmission power and the communication quality in the communication with the mobile station and the utilization ratio for a common channel, and compares the obtained values with predetermined threshold values. When the obtained values are lower than the threshold values, the wireless base station continues to use the common channel for signal transmission/reception. On the other hand, when the obtained values exceed the threshold values, the wireless base station sets an individual channel and sets a wireless channel so as to be capable of the continued use of the individual channel for the exchange of signals.
摘要:
A communication path switching system including a wireless base station having a function of wireless communication with a mobile station and a function of relaying data transmitted from the mobile station over a wireless communication path; and plural transmission apparatuses having a function of wired communication with the wireless base station and capable of establishing respectively a wired communication path to be used to relay the data transmitted from a mobile station toward another mobile station. One wired communication path from the wireless base station to one transmission apparatus is switched to another wired communication path from the wireless base station to another transmission apparatus without re-establishing a wireless communication path between the mobile station and the wireless base station.
摘要:
A transmission process restriction method according to the present invention includes the steps of transmitting a notification information notifying of a restriction rate for each access class and a restriction rate for each traffic class, causing the mobile station to determine a restriction rate of the mobile station on the basis of the notification information received by the mobile station, an access class of the mobile station, and a traffic class of the mobile station, causing the mobile station to compare a random number generated by the mobile station to the restriction rate of the mobile station, and causing the mobile station to decide whether or not to block the connection request transmission processing in accordance with a result of the comparison.
摘要:
An image forming apparatus which utilizes a communication device is disclosed. A communication unit of a housing which corresponds to an antenna portion is provided at a position at which the communication unit can be seen without obstruction from the upper side. A communication device such as a smartphone can be brought close to or into contact with the communication unit readily. Accordingly, wireless communication between the antenna portion and the communication device can be established.
摘要:
A liquid jetting apparatus is provided including: a liquid jetting head having a nozzle formed therein through which the liquid is jetted; a driving unit which is configured to output energy to the liquid jetting head; an energy recovery mechanism which is configured to recover and supply a part of the energy supplied from the driving unit to the liquid jetting head; and a mist removing unit to which the part of the energy recovered by the energy recovery mechanism is supplied so that the supplied energy is used to remove a mist generated under a condition that the liquid jetting head jets the liquid.
摘要:
An acidic gas absorbent having a high acidic gas absorption capacity, that is, a high acidic gas absorption amount and a high acidic gas absorption rate, an acidic gas absorption device, and a method for absorbing an acidic gas, are provided. An acidic gas absorbent containing an azabicyclo compound and a primary or secondary amine compound; an acidic gas absorbent containing a heteroaromatic ring compound and a primary or secondary amine compound; an acidic gas removal device using these acidic gas absorbents; and a method for removing an acidic gas are disclosed.
摘要:
A curable composition and a negative type color filter including a compound represented by the following formula (1). A is a residue of a five-membered heterocyclic diazo component A-NH2. B1 and B2 are each —CR1═, —CR2═ or N. R5 and R6 are each H, an aliphatic group, an aromatic group, a heterocyclic group or the like. G, R1 and R2 are each H, a halogen, an aliphatic group, an aromatic group, a heterocyclic group, a cyano group, a carboxyl group, a carbamoyl group, an alkoxycarbonyl group or the like. R1 and R5, or R5 and R6 may be bonded with each other to form a five-membered or six-membered ring.