Abstract: The mobile station 2-1 determines whether a current maximum transmission rate is sufficient or not in a predetermined cycle by using a maximum transmission rate R indicated by a pointer, a volume Q of data accumulated in the buffer 22-1 and a requested delay T determined according to service of data. The mobile station 2-1 transmits a determination result as an RR signal in a predetermined control signal field within an uplink E-DPCH to the base station 1. The base station 1 receives an RR signal from the mobile station 2-1, determines an increment/decrement of the maximum transmission rate allowed for the mobile station 2-1 to use such that a noise rise fails to exceed a predetermined threshold value and notifies the mobile station 2-1 of the determination as an RG signal by a downlink E-DPCCH. The mobile station 2-1 ups or downs the position of the pointer according to the RG signal.

Abstract: Even when a radio terminal cannot receive content data from a base station to which the radio terminal serves, the radio terminal receives the content data from other base station. A wireless communication system (1) includes a plurality of radio base stations (21 to 23) and a radio terminal (40). The radio terminal (40) serves to a specific radio base station (serving radio base station) among the radio base stations (21 to 23). Moreover, the radio terminal (40) receives content data which is broadcasted or multicasted from a non-serving radio base station among the radio base stations (21 to 23) according to a gap pattern.

Abstract: A communication control method is provided which improves a wireless resource usage rate, is available to recognize a variation in wireless resource state in advance, and is available to control communication in accordance with the variation in a mobile communication system in which an MBMS and an HSDPA coexist and the same wireless resource is shared and used. A MAC-m transmits information related to a wireless resource used on an MBMS transport channel at a transmission timing of a base station to a MAC-hs before the transmission timing. The MAC-hs receives the information related to the wireless resource of the MBMS transport channel from the MAC-m. The MAC-hs calculates a wireless resource which can be used applied to data of a HSDPA transport channel at the transmission timing with using the information related to the wireless resource of the MBMS transport channel and a wireless resource to which the HSDPA transport channel is allocated.

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: Methods of selecting a transport format combination are provided. For example, a method comprises calculating the transmission power of a first physical channel using each of first TFCs, and determines whether a mobile station is in a transmission capable state. The method also comprises calculating the sum of the transmission power of first and second physical channels using first and second TFCs, with respect to each of combinations of first and second TFCs, and determines whether the mobile station is in the transmission capable state. The method also comprises selecting first TFC from the first TFCs wherein the mobile station is in the transmission capable state and selecting 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. The data is transmitted using the selected first and second TFCs, respectively.

Abstract: The mobile station 2-1 determines whether a current maximum transmission rate is sufficient or not in a predetermined cycle by using a maximum transmission rate R indicated by a pointer, a volume Q of data accumulated in the buffer 22-1 and a requested delay T determined according to service of data. The mobile station 2-1 transmits a determination result as an RR signal in a predetermined control signal field within an uplink E-DPCH to the base station 1. The base station 1 receives an RR signal from the mobile station 2-1, determines an increment/decrement of the maximum transmission rate allowed for the mobile station 2-1 to use such that a noise rise fails to exceed a predetermined threshold value and notifies the mobile station 2-1 of the determination as an RG signal by a downlink E-DPCCH. The mobile station 2-1 ups or downs the position of the pointer according to the RG signal.

Abstract: Even when a radio terminal cannot receive content data from a base station to which the radio terminal serves, the radio terminal receives the content data from other base station. A wireless communication system (1) includes a plurality of radio base stations (21 to 23) and a radio terminal (40). The radio terminal (40) serves to a specific radio base station (serving radio base station) among the radio base stations (21 to 23). Moreover, the radio terminal (40) receives content data which is broadcasted or multicasted from a non-serving radio base station among the radio base stations (21 to 23) according to a gap pattern.

Abstract: User equipment in a communication system including a base station includes: a receiver which receives, from the base station, a rate control command to up, down or keep a maximum transmission rate of the user equipment and receives, from the base station, absolute information by which the maximum transmission rate of the user equipment is determined, wherein an initial maximum transmission rate is set in the user equipment prior to receiving the rate control command or absolute information.

Abstract: It is possible to solve the problem that a downstream control information amount is significantly increased if allocation information is periodically reported because no allocation method of a default E-DCH resource configuration is defined for a preamble signature. A base station and a mobile station decide a default resource configuration by using a total number of resource configurations or a value obtained from the total number.

Abstract: Disclosed is a DRX control method and system in which a source base station forwards Dormancy Context, which is information for controlling the activity level of a mobile station that performs inter base station handover, to a target base station and, immediately after the mobile station completes handover, the target base station performs DRX control of the mobile station using the Dormancy Context.

Abstract: Provided is a mobile station which communicates with abase 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 mobility management control method and system that can redress the uneven loads on base stations in a mobile communications network are provided. Multiple base stations in a tracking area each have a mobile station mobility management function. A base station positioned at an edge of the tracking area monitors its own load state. Depending on its own load state, the base station relocates to another base station a location management function with respect to a new location management request, or a location management function as a mobility management serving base station with which location management has been already performed for a 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: It is possible to solve the problem that a downstream control information amount is significantly increased if allocation information is periodically reported because no allocation method of a default E-DCH resource configuration is defined for a preamble signature. A base station and a mobile station decide a default resource configuration by using a total number of resource configurations or a value obtained from the total number.

Abstract: When a mobile terminal experienced a radio link failure in a first cell and establishes a re-connection in a second cell within a predefined time and/or within a preset movement distance from the time of the radio link failure, the mobile terminal reports at least one of the information regarding a first cell and the information regarding a second cell.

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: There is provided a radio communication method capable of reducing inter-cell interference. In a radio communication system in which each of a plurality of base stations performs radio communication with a mobile station by using one of frequency blocks, the base stations transmit pilot signals using frequency blocks and the mobile station measures the reception quality of the pilot signals of the first base station, measures the reception quality of the pilot signals transmitted by the second base station, generates channel quality information for the frequency block according to the reception quality of the pilot signal of the first base station and the reception quality of the pilot signal of the second base station, and transmits the channel quality information to the first base station.

Abstract: A transmission method for an uplink transport layer in a mobile communication network provided with a plurality of mobile stations, a plurality of base stations and a radio network controller includes the step of: each base station receiving and decoding a data packet from the mobile station; each base station storing a correctly-decoded data packet into a transmission queue and transmitting the correctly-decoded data packet to the radio network controller; the radio network controller updating reception status in accordance with the received data packets and sending the reception status to the plurality of base stations; and each base station updating the transmission queue in accordance with the received reception status.

Abstract: Disclosed is a radio communication system in which transmission parameters, such as MCS of MBSFN, the number of subframes, and a transmission power of a reserved cell, are adaptively output, based on a unicast traffic volume in a MBSFN area, a number of terminals, and a number of cells of the MBSFN area, so that a system throughput in the MBSFN area is maximized while satisfying an MBSFN quality requirement condition.

Abstract: Base stations control the transmission rate that is used by UE (user equipment) to forward them information. A UE periodically forwards a rate request to a base station if the UE needs to have its data transmission rate to the base station increased or decreased, and the base station responds with a rate command. An error can occur in the transmission of the rate command, such that a rate Rnb transmitted by the base station and detected by the UE as Rue may not match. Various schemes are proposed for reducing and correcting such transmission errors. A first scheme involves periodically resetting the transmission rate of the base station and UE with a reference rate. Second to fourth schemes involve periodically comparing the transmission rates of the base station and UE, and replacing the rate of the UE if they differ. A fifth scheme involves a filtering of the feedback command in order to reduce the impact of error propagation.