摘要:
In a case where, although a radio base station (eNB 1-1) has established an SRS transmission frequency band, a serving radio terminal (UE 2-1) has transmitted, to the radio base station (eNB 1-1), an SRS by use of only a frequency band that is a part of the SRS transmission frequency band, the radio base station (eNB 1-1) allocates a downstream resource block the frequency band of which is included in the SRS transmission frequency band and further the frequency band of which is identical with the frequency band of the SRS received at the latest; then establishes, for the downstream resource block, a transmission weight based on the SRS received at the latest; and then uses the downstream resource block to transmit a radio signal.
摘要:
Provided is a base station for communicating with a mobile station by assigning at least a part of a communication frame including a plurality of wireless communication channels in a frequency direction. The communication frame includes at least one special subframe having a data transmission region available for transmission to the mobile station and a data reception region available for reception from the mobile station, separated from the data transmission region in a time direction. The base station includes an assignment unit 50 for assigning, in the special subframe, the data transmission region for transmission of downlink control information to nearby mobile stations and the data reception region for reception of uplink control information from the nearby mobile stations, and a transmission and reception unit 10 for transmitting the downlink control information in the data transmission region and for receiving the uplink control information in the data reception region.
摘要:
Disclosed is a wireless base station (eNB1-1) that sets to each serving wireless terminal (UE2) different frequency bandwidths (SRS transmission frequency bandwidths) that are used when said serving wireless terminals (UE2) send SRS at a predetermined special sub-frame timing. In addition the wireless base station (eNB1-1) sends the set SRS transmission frequency bandwidth information to the serving wireless terminals (UE2).
摘要:
A base station (12) performs communication to and from a mobile station via at least a part of a plurality of radio channels. The base station (12) includes: a channel allocation section (30) for allocating a radio channel having an allocation effective period of two or more frames to the mobile station; and a channel notification section (34) for notifying the mobile station of a radio channel newly allocated by the channel allocation section (30) in response to an expiration of the allocation effective period of the radio channel which has been allocated by the channel allocation section (30). The mobile station uses the radio channel notified from the base station (12) for communicating to and from the base station (12) until an allocation effective period of the new radio channel expires.
摘要:
An eNB1-1 employs frequency hopping that assigns a radio resource to a UE2-1 in response to switching of a frequency of an SRS from the UE2-1, and determines an MCS in a first radio resource block when a first downlink radio resource block is assigned to the UE2-1, on the basis of SINR acquired for a second downlink radio resource block having a frequency bandwidth equal to a frequency bandwidth of the first downlink radio resource and being assigned to the UE2-1 in the past.
摘要:
A base station (12) performs communication to and from a mobile station via at least a part of a plurality of radio channels. The base station (12) includes: a channel allocation section (30) for allocating a radio channel having an allocation effective period of two or more frames to the mobile station; and a channel notification section (34) for notifying the mobile station of a radio channel newly allocated by the channel allocation section (30) in response to an expiration of the allocation effective period of the radio channel which has been allocated by the channel allocation section (30). The mobile station uses the radio channel notified from the base station (12) for communicating to and from the base station (12) until an allocation effective period of the new radio channel expires.
摘要:
A tubular member is disclosed which achieves reduced weight, prevention of unevenness or chips in decoration, and good decoration quality. This tubular member is formed as follows a fiber reinforced prepreg in which reinforcing fibers are impregnated with a synthetic resin is wound to form a main body of the tubular member, and decorative particles are embedded into an outer surface side resin of the fiber reinforced prepreg disposed on an outermost side of the main body. An average thickness of the outer surface side resin layer of the fiber reinforced prepreg on the outermost side is formed to be smaller than an average diameter of the reinforcing fibers of this fiber reinforced prepreg on the outermost side, and an average thickness of decorative particles is formed to be equal to or less than the average thickness of the outer surface side resin layer.
摘要:
An eNB1-1 employs frequency hopping that assigns a radio resource to a UE2-1 in response to switching of a frequency of an SRS from the UE2-1, and determines an MCS in a first radio resource block when a first downlink radio resource block is assigned to the UE2-1, on the basis of SINR acquired for a second downlink radio resource block having a frequency bandwidth equal to a frequency bandwidth of the first downlink radio resource and being assigned to the UE2-1 in the past.
摘要:
An eNB assigns an uplink SRS resource for transmitting the SRS utilized in an adaptive array control, and a PDSCH resource that overlaps, on a frequency axis, with the uplink SRS resource, to a UE. The eNB assigns the uplink SRS resource within a range of an SRS transmission available frequency band f1 that can be used for transmitting the SRS. When it is necessary to transmit downlink repeat data to a first UE when an assignment of the uplink SRS resource is switched from the first UE to a second UE, the eNB assigns the PDSCH resource for the downlink repeat data in an SRS transmission unavailable frequency band f2 outside the range of the SRS transmission available frequency band f1.
摘要:
A transmission path state estimation unit estimates a state of a transmission path to a wireless terminal based on a DRS (Demodulation Reference Signal) included in uplink user data received from the wireless terminal when a re-sending request is received after transmission of an SRS is stopped. A transmission unit forms directivity of a plurality of antennas based on the estimated state of the transmission path and transmits downlink user data.