Abstract: Provided is a mobile station which communicates with a base station using a radio channel, the mobile station comprising: a switching unit configured to switch from a packet reception period, during which packet reception can be executed, to a packet reception halt period, during which packet reception is halted; a transmission unit configured to transmit, to the base station, a result of receiving a packet sent from the base station, as a reception result notification signal; a packet reception determination unit configured to determine a packet reception fault; and a reception period determination unit configured to extend the packet reception period if the packet reception fault is determined by the packet reception determination unit.

Abstract: A mobile station is configured to use, a reception quality of GPS electric wave received by a mobile station, time needed in obtaining GPS location information (or the reception quality of preset television or radio broadcasting) as surrounding environmental information of the mobile station and to control, based on the surrounding environmental information, measurement of a link status (reception quality) and/or reporting of the measurement to a base station. A report from the mobile station is transmitted via the base station and a gateway to a management server which optimizes radio parameter based on the report.

Abstract: A mobile station (MS) transmits a first data flow to a first group of base stations with a first power offset, transmits a second data flow to a second group of base stations, and further transmits a pilot signal. A radio network controller (RNC) controls the power of the pilot signal power based on reception errors of the second data flow, calculates the first power offset based on signaled required level of the first power offset from base stations (BTS) of the first group which calculate the required level of the first power offset based on an occurrence of retransmission, and signals the calculated first power offset to the mobile station.

Abstract: A mobile station calculates the transmission power of a first physical channel using each of first TFCs, and determines whether the mobile station is in a transmission capable state or not. Then, the mobile station calculates the sum of the transmission power of first and second physical channels, with respect to each of combinations of the first and second TFCs, and determines whether the mobile station is in the transmission capable state or not. Then, the mobile station selects a first TFC from the first TFCs wherein the mobile station is in the transmission capable state. Then, the mobile station selects a second TFC from the second TFCs which are included in combinations wherein the mobile station is in the transmission capable state among the combinations including the selected first TFC. Thereafter, data is transmitted using the selected first and second TFCs, respectively.

Abstract: A mobile station which performs communication with a base station, the mobile station including: a timer timing a period to judge whether an uplink signal to the base station is synchronized, wherein the period is set by the base station for each of a plurality of mobile stations, wherein the timer restarts timing the period in response to receiving a timing adjustment value from the base station.

Abstract: A base station (2) receives paging information for a mobile station (8) from gateway device (1), transmits the paging information after changing the amount of the radio resource of a paging channel, and measures a statistic associated with the completion of communication processing including at least a response of the paging information. The base station (2) then calculates a reception error rate of the paging information, based on the statistic. When receiving the paging information, the mobile station (8) transmits a response signal to the base station (8).

Abstract: A mobile station determines, in accordance with reception quality of a radio signal from a base station, a measurement cycle of a predetermined measurement on a link status and/or on/off of the predetermined measurement and controls execution of the predetermined measurement based on the determination.

Abstract: A mobile station determines, in accordance with reception quality of a radio signal from a base station, a measurement cycle of a predetermined measurement on a link status and/or on/off of the predetermined measurement and controls execution of the predetermined measurement based on the determination.

Abstract: A code sequence transmission method capable of improving system throughput and user throughput by improving power utilization efficiencies of a control channel and a data channel including a plurality of signals having different required qualities is provided. In a mobile station, a bit sequence of a TFCI is transmitted within one frame a plurality of times repeatedly, the bit sequence of each TFCI is multiplied by one bit of a bit sequence of an SI, a multiplication result is transmitted. It is thereby possible to transmit both the TFCI and the SI without providing a signal field of the SI in each frame.

Abstract: The present invention provides a wireless communication system which can reduce the probability that a latency before data transmission increases when a mobile station that is actually in sync is judged to be out of sync based on a timeout of the timer used for judging whether a mobile station is in a deemed in-sync state or in a deemed out-of-sync state. A base station of a wireless communication system which performs communication between a mobile station and the base station, includes a timer unit which sets a period for judging whether an uplink signal from the mobile station is synchronized; and a timer control unit which is capable of determining the period for each of mobile stations and notifies the period to each of the mobile station upon RRC establishment or RRC re-establishment.

Abstract: In a method of selecting a transport format combination according to the present invention, a mobile station calculates the transmission power of a first physical channel using a first TFC with respect to each of first TFCs, and determines whether the mobile station is in a transmission capable state or not. Then, the mobile station calculates the sum of the transmission power of first and second physical channels using first and TFCs, with respect to each of combinations of the first and second TFCs, and determines whether the mobile station is in the transmission capable state or not. Then, the mobile station selects a first TFC from the first TFCs wherein the mobile station is in the transmission capable state. Then, the mobile station selects a second TFC from the second TFCs which are included in combinations wherein the mobile station is in the transmission capable state among the combinations including the selected first TFC.

Abstract: There is provided a wireless communication system which can synchronize a mobile station with a destination base station in response to the mobile station determining to switch base stations. Each base station generates synchronization information to synchronize the mobile station with the base station from a reverse pilot signal received from the mobile station, generates reverse propagation quality information from the reverse pilot signal, and generates and transmits a control signal including the synchronization information and the reverse propagation quality information. A mobile station generates and transmits a reverse pilot signal, receives a signal including the control signal from each of the base stations.

Abstract: A mobile station which performs communication with a base station, the mobile station including: a timer timing a period to judge whether an uplink signal to the base station is synchronized, wherein the period is set by the base station for each of a plurality of mobile stations, wherein the timer restarts timing the period in response to receiving a timing adjustment value from the base station.

Abstract: A wireless communication system is provided for reducing the probability that latency before data transmission increases when a mobile station that is actually in sync is judged to be out of sync. A base station causes the timing calculation part to calculate the timing advance (TA) of a transmit timing from the mth mobile station; causes the timer adaptive control part to obtain the traveling speed or the time variation in TA of the mth mobile station and, adaptively determines and outputs as the timer update information the length of the mth first timer within an M number in total of synchronization timers and the length of the second timer of the mth mobile station and update the length of the mth first timer; and transmits from the downlink transmission part a downlink signal which contains timer update information.

Abstract: There is provided a wireless communication system which can synchronize a mobile station with a destination base station in response to the mobile station determining to switch base stations. Each base station generates synchronization information to synchronize the mobile station with the base station from a reverse pilot signal received from the mobile station, generates reverse propagation quality information from the reverse pilot signal, and generates and transmits a control signal including the synchronization information and the reverse propagation quality information. A mobile station generates and transmits a reverse pilot signal, receives a signal including the control signal from each of the base stations.

Abstract: Provided is a mobile station which communicates with a base station using a radio channel, the mobile station comprising: a switching unit configured to switch from a packet reception period, during which packet reception can be executed, to a packet reception halt period, during which packet reception is halted; a transmission unit configured to transmit, to the base station, a result of receiving a packet sent from the base station, as a reception result notification signal; a packet reception determination unit configured to determine a packet reception fault; and a reception period determination unit configured to extend the packet reception period if the packet reception fault is determined by the packet reception determination unit.

Abstract: A resource allocation control method and device that can reduce inter-cell interference in a radio communications system are provided. According to a method for resource allocation control between a plurality of cells in a radio communications system, radio communication devices respectively controlling at least two cells notify information about control resources of its own cell to each other. In the resources of its own cell, each of the radio communication devices sets a buffer resource within a predetermined resource range corresponding to a control resource of the other cell. At a request for information transmission in its own cell, each of the radio communication devices restricts the allocation of the set buffer resource.

Abstract: A mobile station (MS) transmits a first data flow to a first group of base stations with a first power offset, transmits a second data flow to a second group of base stations, and further transmits a pilot signal. A radio network controller (RNC) controls the power of the pilot signal power based on reception errors of the second data flow, calculates the first power offset based on signaled required level of the first power offset from base stations (BTS) of the first group which calculate the required level of the first power offset based on an occurrence of retransmission, and signals the calculated first power offset to the mobile station.

Abstract: A resource allocation method and device are provided that can achieve uniform loads on and stable quality of a common channel available to mobile stations having no dedicated channels. A method for allocating common channel resources in a system in which a plurality of first radio communication devices transmit data to a second radio communication device over a common channel, based on first resource allocation information, includes: by the second radio communication device, transmitting second resource allocation information to at least one of the first radio communication devices; and by each of the first radio communication devices, transmitting data to the second radio communication device over the common channel, based on any one of the first resource allocation information and the second resource allocation information.

Abstract: There is provided a mobile communication system that can prevent a situation in which, although there is no occasion to receive packets for a mobile station, the reception processing is continued and useless power is undesirably consumed. The mobile communication system includes a base station that repeats a transmission period and a transmission halt period with a constant control cycle, and mobile station that repeats a reception period and a reception halt period with a constant control cycle (antenna, duplexer, reception unit, user data separation unit, packet transmission determination unit, reception period determination unit, packet reception determination unit, and signal synthesis unit). The mobile station alternately repeats the reception period and reception halt period, sends the reception result to the base station, and starts the reception period according to the start of the transmission period of the base station to receive packets.