Abstract: The present invention relates to a communication system which can effectively avoid congestion in ITS communications at a street intersection to properly assist the driving of autonomous vehicles. An information source roadside apparatus 3 acquires terminal movement information on movement directions of nearby pedestrian terminals, and transmits the information to an information destination roadside apparatus, which determines, based on the received information, if there is predicted congestion in the terminal-to-terminal communications at a predetermined future time. When determining that there is predicted congestion, the information destination roadside apparatus transmits an instruction for a congestion avoidance operation to the pedestrian terminals 1.

Abstract: Provided is a system which can reduce load on a travel controller that performs a danger avoidance operation by preliminarily detecting a significant event without increasing an amount of ITS communications, thereby providing suitable assistance for travel control of autonomous vehicles. When a vehicle 1 passes through a certain section of a road after an in-vehicle terminal 4 has detected a significant event while the vehicle 1 is traveling in the section, the in-vehicle terminal 4 transmits event data (images and other information related to the event) to a roadside apparatus 6 at an end point of the section. The roadside apparatus 6 transmits the event data to another roadside apparatus 6 at a start point of the section, which in turn transmits the event data to an in-vehicle device in another vehicle entering the section so that the device can perform travel control based on the event data.

Abstract: Regarding display of browsing information on a portable terminal, it is possible to impose a browsing restriction on a person who does not have a browsing authorization with a simple configuration while avoiding a hindrance to easy access to the browsing information.

Abstract: A reception apparatus that performs AGC processing on signals received in an antenna with a plurality of branches. In this apparatus, at the time a power calculation section (141) has completed calculation of a power value and an AGC gain calculation section (105) has completed gain calculation, an operation timing control section (108) instructs a power calculation section (142) to calculate a power value. Further, at the time the power calculation section (142) has completed calculation of the power value and the AGC gain calculation section (105) has completed the gain calculation, the operation timing control section (108) instructs the power calculation section (141) to calculate a power value.

Abstract: A grouping setting section 206 controls spreading code generation sections 207 to input a plurality of long codes into an adder 208 one by one, and thereby the plural long codes are grouped. The adder 208 adds the input plural long codes to each other at every chip in each group, and a correlation section 204 calculates a correlation value between the added long codes and a received signal. A maximum correlation value detection section 205 selects a group indicating the maximum correlation value, and the grouping setting section 206 again divides the long codes included in the selected group into a plurality of groups. By the repetition of the procedures until the long codes in a group becomes one, the long code is identified.

Abstract: Changeover control section 201 controls changeover operations of switch 202, switch 203 and symbols Dplus's including only +A are sorted and output to the memory 204 side and symbols Dminus's including −A are sorted and output to the memory 205 side, memory 204 and adder 206 perform in-phase additions between Dplus's and memory 205 and adder 206 perform in-phase additions between Dminus's and square addition section 207 calculates the squares of Dplus's after the in-phase addition and the squares of Dminus's after the in-phase addition and then adds up the squared Dplus's and Dminus's.

Abstract: In a correlation circuit 103, a correlation value is obtained by despreading processing of a reception signal. The above correlation value is sent to a cell detection circuit 104 and a cell monitoring circuit 105. The above results of cell detection and cell monitoring are sent to a cell management table 106 for classification and management of cells. A management circuit 107 changes the cycle for cell monitoring/cell detection according to various kinds of events, and, then, gives an instruction for cell detection and cell monitoring at the changed cycle to the cell detection circuit 104 and the cell monitoring circuit 105.

Abstract: A first-stage processing section 105 detects a plurality of slot timings corresponding to a plurality of correlation values equal to or greater than a threshold value, a second-stage processing section 110 detects scrambling code timing and a scrambling code group in accordance with one of the slot timings, a third-stage processing section 115 identifies a scrambling code in accordance with the scrambling code timing, and a controller 104 switches a switch 103 so that processing by the second-stage processing section 110 and processing by the third-stage processing section 115 are executed for a plurality of slot timings each time processing by the first-stage processing section 105 is executed once.

Abstract: When it is necessary to create a delay profile for a single base station, such as when on standby, a switching determination section 103 switches a switch 104 to the correlation value calculator 106 side, and the correlation value calculator 106 performs despreading processing with a spreading code corresponding to one base station for a signal received at any time. When it is necessary to create a delay profile for a plurality of base stations, such as at the time of handover, the switching determination section 103 switches the switch 104 to the received signal accumulation section 105 side, and the correlation value calculator 106 performs despreading processing using despreading codes corresponding to a plurality of base stations for the same received signal held temporarily in the received signal accumulation section 105.