摘要:
A base station allocates a radio resource to a scheduling-target user based on a scheduling metric which is calculated for each of scheduling-target users and calculates the amount of available data for each user. When the radio resource is allocated to the scheduling-target user, the amount of data (Dassign) to be communicated using the allocated radio resource is subtracted from the amount of available data (Davailable) for the user. The amount of available data (Davailable) for each user within a cell is updated (min((Davailable+Dref), Dref)) to be less than or equal to a reference data amount in each control period (TAMBR). The scheduling-target user is selected based on the amount of available data for each user.
摘要:
A base station apparatus includes: decoding units for an uplink control signal and an uplink shared data signal; and a reliability determination unit configured to determine a degree of reliability that predetermined information is included in the uplink control signal that is received periodically. In the case where timing of a predetermined period for the predetermined information agrees with reception timing of the uplink shared data signal, (1) whether to perform decoding by assuming that the uplink shared data signal includes the predetermined information is determined according to whether the period is equal to or less than a radio frame length, (2) if the period is longer than the radio frame length, whether to decode the uplink shared data signal by assuming that the uplink shared data signal includes the predetermined information is determined according to whether the degree of reliability is higher than a predetermined value.
摘要:
A radio base station eNB according to the present invention includes: a transmission format determination unit 13 configured to determine a transmission format of an uplink data signal where HARQ is performed; a frequency resource determination unit 14 configured to determine a frequency resource of the uplink data signal; a transmission instruction unit 15 configured to instruct new transmission and retransmission of the uplink data signal via PDCCH; and a transmission acknowledgement information transmission unit 12 configured to transmit transmission acknowledgement information of the uplink data signal via PHICH, wherein the transmission acknowledgement information transmission unit 12 always transmits, when a subframe bundling is applied to the uplink data signal, ACK as the transmission acknowledgement information.
摘要:
A base station in a mobile communication system includes a scheduling unit generating downlink grant information indicating that downlink radio resources should be allocated to not more than a first multiplex number of user devices; and a transmission unit transmitting control signals containing the downlink grant information and data signals mapped to the radio resources specified by the downlink grant information, wherein, when less than the first multiplex number and not less than a second multiplex number being less than the first multiplex number, of user devices that receive periodically generated periodic data as data signals exist, and user devices that receive non-periodically generated non-periodic data as data signals exist, the scheduling unit generates downlink grant information indicating that the downlink radio resources should be allocated to the second multiplex number of user devices receiving the periodic data and the user devices receiving the non-periodic data.
摘要:
A base station in a mobile communication system includes: a quality information obtaining unit configured to obtain quality information indicating a radio channel state of a user apparatus; an assignment period selection unit configured to select an assignment period corresponding to the quality information of the user apparatus from a predetermined correspondence relationship between each of a plurality of choices of assignment periods for assigning radio resources to periodic data that occurs periodically and a value of quality information indicating a radio channel state; a scheduling unit configured to determine radio resources to be assigned to the user apparatus in the assignment period that is selected; and a radio communication unit configured to communicate, by radio, user data including periodic data of the user apparatus by using the radio resources determined by the scheduling unit.
摘要:
A radio base station includes a resource assignment unit for assigning a resource candidate for transmitting a semi-persistent scheduling transmission acknowledgement signal to a first mobile station during a semi-persistent scheduling bearer setting process. The resource candidate for transmitting a semi-persistent scheduling transmission acknowledgement signal is formed by a combination of a frequency direction resource and a code direction resource by which the first mobile station transmits a transmission acknowledgement signal after a predetermined timing from a timing of receiving downlink data, to the downlink data that has been scheduled by semi-persistent scheduling and has been transmitted via a downlink data channel. The resource assignment unit is configured to assign the resource candidate for transmitting a semi-persistent scheduling transmission acknowledgement signal to the first mobile station based on a number of assignments of predetermined resources formed by a combination of a frequency direction resource and a code direction resource.
摘要:
A base station apparatus determines which mode of a subframe bundling mode (second mode) and a non-bundling mode (first mode) should be used by a user apparatus for communication, and reports a determination result. In the first mode, RTT period is a first period, and each of transmission and retransmission of the signal is performed every 1 TTI. In the second mode, RTT period is a second period that is longer than the first period, and each of transmission and retransmission of the signal is performed every plurality of TTIs. A radio resource to be used for retransmission is determined according to a first frequency hopping pattern in the first mode, and is determined according to a second frequency hopping pattern that is different from the first frequency hopping pattern in the second mode.
摘要:
A radio base station eNB according to the present invention includes: a path loss calculation unit 25 configured to calculate a path loss PL in PUSCH based on a maximum transmittable power PTXMAX, UPH, the number of resource blocks MPUSCH, an offset value ΔTF (TF(i)) corresponding to a transmission format, and a transmission power determination parameter P0_nominal_PUSCH common to cells, and a transmission unit 23 configured to transmit a transmission power offset value P0_UE_PUSCH unique to a mobile station UE, by an RRC message, to the mobile station UE, when a random access procedure is completed, wherein when the random access procedure is completed, the transmission unit 23 transmits a transmission power offset value P0_UE_PUSCH unique to the mobile station, which has a value different from the previously transmitted transmission power offset value P0_UE_PUSCH unique to the mobile station.
摘要:
A base station of a mobile communication system includes a scheduler that generates uplink grant information indicating that uplink radio resources are allocated to less than or equal to a first multiplexing number of units of user equipment, a transmitter that transmits a control signal including the uplink grant information to the user equipment, and a receiver that receives an uplink signal which is transmitted by the user equipment. When a second multiplexing number being less than the first multiplexing number or more units of the user equipment exist which transmit periodically generated periodic data, and when the user equipment exists which transmits non-periodic data generated at non-periodic timing, the scheduler generates the uplink grant information indicating that the uplink radio resources are allocated to the second multiplexing number of the units of the user equipment that transmit periodic data and to the user equipment that transmits non-periodic data.
摘要:
A base station of a communication system includes a quality information retrieval unit that retrieves quality information indicating a radio channel state of user equipment, a threshold value determination unit that determines, for each of the user equipment, a threshold value for at least one of a data retention amount and a data retention time period, depending on the quality information, a scheduler that calculates a scheduling coefficient for the user equipment for which at least the one of the data retention amount and the data retention time period exceeds the threshold value, and that allocates a radio resource to the user equipment at least in accordance with a magnitude of the scheduling coefficient, and a notification unit that reports to the user equipment that the radio resource is allocated.