摘要:
The present invention relates to a mobile communication system, wherein a plurality of channels can be established on a single carrier frequency by code division multiplex access, characterized in that the system comprises code-resource-assigning means for assigning at least a part of an assignable code resource to one of the channels in accordance with a transmission rate necessary for the corresponding channel, the part corresponding to a certain bandwidth corresponding to the transmission rate.
摘要:
The present invention relates to a method for determining a radio zone and an uplink transmission power, wherein each of base stations transmits broadcast information indicating a perch channel transmission power level and an uplink interference level via a corresponding perch channel, and a mobile station receives the broadcast information from near base stations around the mobile station, detects respective reception levels of the perch channels for the near base stations, calculates respective path losses between the mobile station and respective near base stations on the basis of the respective reception levels and the respective perch channel transmission power levels within the broadcast information, calculates respective uplink transmission power levels between the mobile station and respective near base stations on the basis of the calculated respective path losses, the respective uplink interference levels within the broadcast information, and required signal-to-interference ratios involved in reception by the near base stations, selects a radio zone in which the necessary uplink transmission power level is minimum among the respective necessary uplink transmission power levels, the base station of the selected radio zone being ready for communication with the mobile station or being able to commence communication with the mobile station after handover, and controls an uplink transmission power in the selected radio zone based on the necessary uplink transmission power level of the selected radio zone.
摘要:
The present invention relates to a method for controlling a branch replacement wherein at least a current branch between a network and a mobile station are replaced with a plurality of branches necessary for communication using diversity handover when the branch replacement is necessary for the mobile station and when it is recognized that the mobile station can commence communicating using diversity handover if the branch replacement is carried out, thereby enabling the mobile station to commence diversity handover.
摘要:
The present invention relates to a mobile station communicating with a network over the air, comprising decipherment-onset-time-setting-means for setting a time to start deciphering an enciphered reception signal dependently on a time to start enciphering a transmission signal in the network and independently of a time to start enciphering a transmission signal in the mobile station.
摘要:
The present invention relates to a mobile station communicating with a network over the air, comprising encipherment-procedure-notifying-means for notifying the network about encipherment-procedure-specifying-information specifying one or more possible encipherment procedures of the mobile station.
摘要:
The present invention relates to a method for mobile communication carried out among a plurality of mobile stations and a network, wherein personal identifiers are previously assigned to mobile stations. The method comprises the steps of assigning temporary identifiers to mobile stations in communication with the network, storing the personal identifiers and the temporary identifiers of the mobile stations by the network, storing the personal identifiers and the temporary identifiers of each mobile station by the mobile station, detecting, by the network, that one of the temporary identifiers stored in itself is different from that stored in the corresponding mobile station, and reassigning, by the network, another temporary identifier to the mobile station of which the former temporary identifier stored in the network is detected to be different from that stored in the corresponding mobile station.
摘要:
The present invention relates to a method for establishing a control channel in a mobile communication system wherein a mobile station treats a plurality of calls using a plurality of sets of wireless communication resources, wherein a single control channel is established between the mobile station and a network for transporting control information therebetween in a manner that the control channel is formed by one of the sets of wireless communication resources which are being used for a plurality of calls by the mobile station.
摘要:
The present invention relates to a mobile station communicating with a network over the air, comprising decipherment-onset-time-setting-means for setting a time to start deciphering an enciphered reception signal dependently on a time to start enciphering a transmission signal in the network and independently of a time to start enciphering a transmission signal in the mobile station.
摘要:
The present invention relates to a method for determining a radio zone and an uplink transmission power, comprising transmitting, by each of base stations, broadcast information via a corresponding perch channel, the broadcast information indicating a specified channel transmission power level and an uplink interference level; and receiving, by a mobile station, the broadcast information from near base stations around the mobile station; detecting, by the mobile station, respective reception levels of the perch channels for the near base stations; calculating, by the mobile station, respective path losses between the mobile station and respective near base stations on the basis of the respective reception levels and the respective specified channel transmission power levels indicated by the broadcast information; calculating, by the mobile station, respective necessary uplink transmission power levels between the mobile station and respective near base stations on the basis of the calculated respective path losses, the respective uplink interference levels indicated by the mobile station, the broadcast information, and required signal-to-interference ratios involved in reception by the near base stations; selecting, by the mobile station, a radio zone in which the necessary uplink transmission power level is minimum among the respective necessary uplink transmission power levels, the base station of the selected radio zone being ready for communication with the mobile station or being able to commence communication with the mobile station after handover; and controlling, by the mobile station, an uplink transmission power in the selected radio zone based on the necessary uplink transmission power level of the selected radio zone.
摘要:
The present invention relates to a method for determining a radio zone and an uplink transmission power, comprising transmitting, by each of base stations, broadcast information via a corresponding perch channel, the broadcast information indicating a specified channel transmission power level and an uplink interference level; and receiving, by a mobile station, the broadcast information from near base stations around the mobile station; detecting, by the mobile station, respective reception levels of the perch channels for the near base stations; calculating, by the mobile station, respective path losses between the mobile station and respective near base stations on the basis of the respective reception levels and the respective specified channel transmission power levels indicated by the broadcast information; calculating, by the mobile station, respective necessary uplink transmission power levels between the mobile station and respective near base stations on the basis of the calculated respective path losses, the respective uplink interference levels indicated by the mobile station, the broadcast information, and required signal-to-interference ratios involved in reception by the near base stations; selecting, by the mobile station, a radio zone in which the necessary uplink transmission power level is minimum among the respective necessary uplink transmission power levels, the base station of the selected radio zone being ready for communication with the mobile station or being able to commence communication with the mobile station after handover; and controlling, by the mobile station, an uplink transmission power in the selected radio zone based on the necessary uplink transmission power level of the selected radio zone.