摘要:
A transmitter includes an amplitude adjustment unit multiplying an amplitude adjustment sequence value for adjusting amplitude with a synchronization channel transmitted from a base station for establishing synchronization with a mobile station.
摘要:
A transmission power control is disclosed, where the transmission power control includes transferring, from a second radio base station to a first radio base station, a second uplink signal received from a mobile station in a second cell, synthesizing, at the first radio base station, a first uplink signal received from the mobile station in a first cell with the second uplink signal transferred from the second radio base station, and generating and transmitting a transmission power control signal for controlling a transmission power of an uplink signal at the mobile station based on a reception quality of an uplink signal obtained by synthesizing the first uplink signal with the second uplink signal.
摘要:
A transmitter includes an amplitude adjustment unit multiplying an amplitude adjustment sequence value for adjusting amplitude with a synchronization channel transmitted from a base station for establishing synchronization with a mobile station.
摘要:
A base station apparatus is disclosed for use in a mobile communication system including multiple cells having multiple sectors. The base station apparatus includes a synchronization channel generation unit configured to generate a synchronization channel for use in cell search by a user apparatus and a transmitting unit configured to wirelessly transmit a signal including the synchronization channel. The synchronization channel includes a primary synchronization channel and a secondary synchronization channel. The primary synchronization channel includes multiple types of sequences, and the secondary synchronization channel transmitted in a sector of a cell includes a code derived from a predefined generation polynomial equation corresponding to the primary synchronization channel.
摘要:
A synchronization channel is generated by generating, as a P-SCH basic waveform, a signal sequence in which codes with constant amplitude in a frequency domain are placed at intervals of a predetermined number of subcarriers; transforming the signal sequence into a time domain; multiplying the signal sequence transformed into the time domain with a predetermined code sequence; retransforming the signal sequence multiplied with the predetermined code sequence into the frequency domain; generating an S-SCH signal sequence; and multiplexing the signal sequence retransformed into the frequency domain and the S-SCH signal sequence.
摘要:
An apparatus for generating sets of radio parameters includes a first deriving unit deriving a set of radio parameters for specifying a symbol including an effective symbol part with the same period as the effective symbol part specified by another set of radio parameters and a guard interval part with a different period from the guard interval part specified by the other set of radio parameters. The apparatus further includes a second deriving unit deriving a set of radio parameters so that an occupancy proportion of the guard interval part in a single symbol specified by another set of radio parameters is equal to an occupancy proportion of the guard interval part in a single symbol specified by the other set of radio parameters.
摘要:
The present invention provides a radio base station apparatus and a mobile terminal apparatus compatible with respective mobile communication systems when a plurality of mobile communication systems coexist. The mobile terminal apparatus performs a cell search using a synchronization channel signal specific to a first mobile communication system made up of a plurality of component carriers multiplexed with at least one downlink component carrier in the first mobile communication system and/or a synchronization channel signal for a second mobile communication system having a relatively narrow second system band multiplexed with at least one downlink component carrier in the first mobile communication system. and makes random access using uplink/downlink component carriers allocated based on information of downlink component carriers including the synchronization channel signal used for the cell search and information of uplink component carriers included in a dynamic broadcast channel signal broadcast from the radio base station apparatus.
摘要:
A communication apparatus to be used for a newer system employing an FDD scheme in an area where an older system and the newer system coexist. The communication apparatus includes a first communication unit communicating at least a downlink data channel of the newer system using a frequency band belonging to a first frequency range (3.4-3.8 GHz); and a second communication unit communicating at least an uplink control channel of the newer system using a frequency band belonging to a second frequency range (2 GHz band) lower than the first frequency range. The second frequency range is used for uplink and downlink communications in the older system.
摘要:
A base station for communicating within a system band including plural basic frequency blocks includes a signal generating unit configured to generate data and control signals; an intermediate signal generating unit configured to generate intermediate signals; a multiplexing unit configured to add one or more subcarriers such that center frequencies of signal bands for the respective basic frequency blocks are placed at predetermined frequency intervals, and multiplex the intermediate signals and data and control signals; and a transmitting unit configured to transmit the multiplexed signals.
摘要:
A mobile terminal apparatus and radio base station apparatus supporting each of a plurality of mobile communication systems when the plurality of mobile communication systems coexists is disclosed, wherein the mobile terminal apparatus is a mobile terminal apparatus in a radio communication system for performing transmission and reception in uplink and downlink, each assigned to a relatively wide system band obtained by aggregating a plurality of component carriers, each of which is a relatively narrow system band, and has coding and data modulation sections that perform coding and data modulation on uplink control signals including report information of individual component carriers assigned to downlink, and mapping sections that map the control signals subjected to coding and data modulation to uplink communication channels.