Abstract: In a mobile radio network in which synchronous base stations and asynchronous base stations coexist, according to handover destination base station candidate information transmitted from a base station to a mobile station, effective time information indicating either an effective time during which it is guaranteed that a signal from a base station candidate included in the handover destination base station candidate information can be detected when, after a lapse of an integral multiple of a fixed time interval from a time when the mobile station could detect a reference signal which were transmitted at the fixed time intervals from the base station candidate, the mobile station detects the same base station candidate again, the effective time depending on the base station candidate, or an index for enabling the mobile station to drive the effective time is provided to the mobile station, and the mobile station carries out the detection by setting up the detection time intervals at which the mobile station de

Abstract: In a mobile radio network in which synchronous base stations and asynchronous base stations coexist, according to handover destination base station candidate information transmitted from a base station to a mobile station, effective time information indicating either an effective time during which it is guaranteed that a signal from a base station candidate included in the handover destination base station candidate information can be detected when, after a lapse of an integral multiple of a fixed time interval from a time when the mobile station could detect a reference signal which were transmitted at the fixed time intervals from the base station candidate, the mobile station detects the same base station candidate again, the effective time depending on the base station candidate, or an index for enabling the mobile station to drive the effective time is provided to the mobile station, and the mobile station carries out the detection by setting up the detection time intervals at which the mobile station de

Abstract: A graft-modified polyolefin resin is provided, which is obtained by preparing a aqueous suspension containing (a1) 100 parts by weight of a polyolefin resin, (a2) 0.1 to 30 parts by weight of a mixture of 1 to 1000 parts by weight of an unsaturated glycidyl ester to 100 parts by weight of a compound having a glycidyl group as represented by a general formula (I): ##STR1## wherein Ar is an aromatic hydrocarbon group of C.sub.6 -C.sub.23 having at least one glycidyloxy group, and R is a hydrogen atom or a methyl group, (a3) 0.1 to 500 parts by weight of a vinyl monomer, and (a4) 0.001 to 10 parts by weight of a radical initiator to 100 parts by weight in total of (a2) and (a3), to thus impregnate (a1) with (a2) and (a3), and polymerizing (a2) and (a3) onto (a1). Resin compositions containig the graft-modified polyolefin resin have not only well-balanced mechanical properties, but excellent moldability.