| 摘要 |
PCT No. PCT/GB91/01242 Sec. 371 Date Mar. 22, 1993 Sec. 102(e) Date Mar. 22, 1993 PCT Filed Jul. 25, 1991 PCT Pub. No. WO92/02105 PCT Pub. Date Feb. 6, 1992.A handover initiation system for a cellular radio network comprises means for determining both the distance of a mobile user from a cell base station based on propagation delay techniques and means for measuring the signal strength to determine the path taken by the mobile user. In a busy area microcells are constituted by single streets. The propagation characteristics of adjoining streets in a larger macrocell can be distinguished from the propagation characteristics of the street constituting the micro-cell such that the handover initiation of a mobile user within one of the surrounding streets can be determined.
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