Patent ID: 8509145
Filing Date: 2013-08-13
Classification: H04B,H04J,H04W

Abstract:
1. A method comprising: serving, by a spread spectrum communication system comprising a first group of sectors and a second group of sectors that borders said first group of sectors along a boundary, a mobile station via a boundary sector in said first group, wherein said boundary sector is adjacent said boundary, wherein sectors in said first group transmit pilot signals having pseudonoise (PN) offsets corresponding to a first PN increment that defines a first number of chips between successive PN offsets and sectors in said second group transmit pilot signals having PN offsets corresponding to a second PN increment that defines a second number of chips between successive PN offsets, wherein said first number is different than said second number, wherein said PN offsets corresponding to said first PN increment have integral multiples of said first number of chips and said PN offsets corresponding to said second PN increment have integral multiples of said second number of chips, and wherein said mobile station maintains an active set, a neighbor set, a candidate set, and a remaining set; and instructing said mobile station via said boundary sector to use said second PN increment when scanning for pilot signals to add to said remaining set, such that said mobile station scans for pilot signals using (i) a first search window that encompasses a first range of PN offsets, wherein said first range of PN offsets includes a first PN offset having a first integral multiple of said second number of chips, and (ii) a second search window that encompasses a second range of PN offsets, wherein said second range of PN offsets includes a second PN offset having a second integral multiple of said second number of chips.