Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
187 words
A simulcast phase synchronization system comprising: a plurality of base stations connected to mobile stations by means of radio channels; a central station which controls the plurality of base stations, said central station comprising: means which transmits, to the plurality of base stations, frame synchronization signals for the mobile stations; the central station and the plurality of base stations each comprising: (i) a reference clock which counts the same time, (ii) means which adjusts, on a basis of time information from the reference clock, transmission timing of paging signals which contain the frame synchronization signals, wherein the means which adjusts comprises: (a) means which temporarily stores signals to be transmitted after dividing the signals to be transmitted into frames; (b) a table which provides the time information that corresponds to a number of frames; and (c) means which, on a basis of the table, selects frames from the temporary storage means in synchronization with the time information, and (iii) means which corrects the reference clock; wherein the transmission timing of each frame of said paging signals is preset in the table in each of said base stations.
Claim 2
Dependent Claim
187 words
A simulcast phase synchronization system comprising: a plurality of base stations connected to mobile stations by means of radio channels; a central station which controls the plurality of base stations, said central station comprising: means which transmits, to the plurality of base stations, frame synchronization signals for the mobile stations; the central station and the plurality of base stations each comprising: (i) a reference clock which counts the same time, (ii) means which adjusts, on a basis of time information from the reference clock, transmission timing of paging signals which contain the frame synchronization signals, wherein the means which adjusts comprises: (a) means which temporarily stores signals to be transmitted after dividing the signals to be transmitted into frames; (b) a table which provides the time information that corresponds to a number of frames; and (c) means which, on a basis of the table, selects frames from the temporary storage means in synchronization with the time information, and (iii) means which corrects the reference clock; wherein the transmission timing of each frame of said paging signals is preset in the table in each of said base stations.
Claim 3
Dependent Claim
57 words
The simulcast phase synchronization system as set forth in claim 1, wherein the means which corrects the reference clock comprises: means which corrects the time of the reference clock of a given one of the plurality of base stations by receiving radio signals arriving from at least one satellite in one and the same Global Positioning System.
Claim 4
Dependent Claim
20 words
The simulcast phase synchronization system as set forth in claim 2, wherein: the radio signals arrive from the same satellite.
Claim 5
Dependent Claim
78 words
The simulcast phase synchronization system as set forth in claim 1, wherein: the reference clock comprises one of a rubidium oscillator and a cesium oscillator; and the means which corrects the reference clock further comprises: (i) a moveable reference clock, and (ii) means which corrects times of the moveable reference clock by electrically connecting the moveable reference clock to the reference clock over a distance which is sufficiently short to avoid a delay time from becoming a problem.
Claim 6
Dependent Claim
37 words
The simulcast phase synchronization system as set forth in claim 1, wherein the means which temporarily stores signals comprises: means which stores signals which have been sent from the central station after dividing the signals into frames.