Importance

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Abstract

A hard-handoff control method for a CDMA mobile switching center includes the steps of detecting an original target switching center number of a switching center for managing a target cell of the handoff request message; converting the speech channel of the mobile station to second switching center areas by determining that the mobile station shifts from the first anchor station in the first switching center to a second anchor station if the target switching center number detected is same as its own switching center number; determining the position of the switching center areas where the mobile station opens a speech path if the target switching center number detected is different from its own switching center original number; converting the speech channel of the mobile station to the second switching center areas if the first switching center is determined as the anchor switching center; comparing the target switching center number with the anchor switching center number if the first switching center is not determined as the anchor switching center; converting the speech channel of the mobile station to the anchor switching center areas if the target switching center number is same as that of the anchor switching center; converting the speech channel of the mobile station to the target switching center areas by directly connecting inner communication paths between the target switching center and the anchor switching center if the target switching center number is different from the anchor switching center number.

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First Claim