摘要:
A base station includes: means configured to manage frequency blocks; means configured to determine, for each frequency block, scheduling information for assigning one or more resource blocks to a communication terminal being in a good channel state; means configured to generate a control channel including the scheduling information for each frequency block; and means configured to frequency multiplexing control channels within the system frequency band and to transmit it. In addition, the base station transmits the control channel by separating a non-specific control channel to be decoded by a non-specific communication terminal and a specific control channel to be decoded by a communication terminal to which one or more resource blocks are assigned.
摘要:
A transmitting apparatus which transmits a transmit symbol in orthogonal-frequency division multiplexing (OFDM) is disclosed. The transmitting apparatus includes a unit which provides a unicast channel; a unit which provides a multimedia broadcast multicast service (MBMS) channel; a unit which provides a specific pilot channel which is specific to a specified cell; a unit which provides one or more common pilot channels common to a plurality of cells; and a multiplexing unit which multiplexes the unicast channel, the MBMS channel, the specific pilot channel, and the one or more common pilot channels, and creates the transmit symbol, wherein the multiplexing unit time-division multiplexes, in the same frequency band, a unicast frame which includes the unicast channel, and an MBMS frame which includes the MBMS channel, and wherein an insertion density of the common pilot channel included in the MBMS frame is larger than an insertion density of the specific pilot channel included in the unicast frame.
摘要:
User equipment for performing cell search using a synchronization channel including a primary synchronization channel and a secondary synchronization channel includes a reception unit configured to receive a signal including the synchronization channel, a symbol timing candidate detection unit configured to detect multiple synchronization signal symbol timing candidates from the synchronization channel based on a correlation value in a time domain between the signal received at the reception unit and a replica signal of the primary synchronization channel, a secondary synchronization channel correlation detection unit configured to perform correlation detection for the secondary synchronization channel based on the multiple synchronization signal symbol timing candidates detected in the symbol timing candidate detection unit and a secondary synchronization channel detection unit configured to detect the secondary synchronization channel based on a result of the correlation detection by the secondary synchronization channel correlation detection unit.
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:
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 base station for a mobile communication system includes a speed detecting unit configured to detect the moving speed of a user device based on a signal received from the user device and indicating the moving speed; and a determining unit configured to select, based on the moving speed detected by the speed detecting unit, a wideband channel quality indicator indicating reception quality of an entire system frequency band allocated to the mobile communication system, or a combination of the wideband channel quality indicator and one or more channel quality indicators of subbands in the system frequency band as channel quality information that needs to be reported from the user device to the base station.
摘要:
A base station for a mobile communication system includes a speed detecting unit configured to detect the moving speed of a user device based on a signal received from the user device and indicating the moving speed; and a determining unit configured to select, based on the moving speed detected by the speed detecting unit, a wideband channel quality indicator indicating reception quality of an entire system frequency band allocated to the mobile communication system, or a combination of the wideband channel quality indicator and one or more channel quality indicators of subbands in the system frequency band as channel quality information that needs to be reported from the user device to the base station.
摘要:
A user equipment performing a cell search and detecting cell-specific information including a cell ID. The user equipment includes a receiving unit configured to receive a synchronization channel; a cell search unit configured to extract a primary synchronization channel and a secondary synchronization channel from the received synchronization channel to perform the cell search; and a verification unit configured to verify a detection result of the cell search based on a verification start condition.
摘要:
A base station apparatus in a radio communications system is disclosed. The base station apparatus communicates with a mobile station using an OFDM scheme in downlink. The base station apparatus includes a sync signal generating unit which generates a secondary sync channel; a multiplying unit which multiplies a scramble code with the secondary sync channel; and a transmitting unit which transmits the secondary sync channel with which the scramble code is multiplied. Cell-specific information is detected by the secondary sync channel.