초록 ▼

A multi-frequency pilot beacon adapted to a CDMA system using at least two different carrier frequencies, F1 and F2, for supplying PN sequences at these frequencies. The pilot beacon has a pseudorandom noise generator for supplying a pseudorandom noise sequence PN and a frequency conversion mechanis

A multi-frequency pilot beacon adapted to a CDMA system using at least two different carrier frequencies, F1 and F2, for supplying PN sequences at these frequencies. The pilot beacon has a pseudorandom noise generator for supplying a pseudorandom noise sequence PN and a frequency conversion mechanism for converting the PN sequence to a first pilot beacon centered at the first CDMA carrier F1 and a second pilot beacon centered at the second CDMA carrier F2. The multi-frequency pilot beacon can be provided at a base station of a given cell to transmit the pilot beacons within that cell and the base station antenna can be used for transmitting the pilot beacons in this embodiment. Alternatively, multi-frequency pilot beacons can be provided wherever necessary within the CDMA system. The multi-frequency pilot beacon is useful in frequency hand-off operations and gathering information about cellular users in the CDMA system

대표청구항 ▼

A multi-frequency pilot beacon adapted to a CDMA system using at least two different carrier frequencies, F1 and F2, for supplying PN sequences at these frequencies. The pilot beacon has a pseudorandom noise generator for supplying a pseudorandom noise sequence PN and a frequency conversion mechanis

A multi-frequency pilot beacon adapted to a CDMA system using at least two different carrier frequencies, F1 and F2, for supplying PN sequences at these frequencies. The pilot beacon has a pseudorandom noise generator for supplying a pseudorandom noise sequence PN and a frequency conversion mechanism for converting the PN sequence to a first pilot beacon centered at the first CDMA carrier F1 and a second pilot beacon centered at the second CDMA carrier F2. The multi-frequency pilot beacon can be provided at a base station of a given cell to transmit the pilot beacons within that cell and the base station antenna can be used for transmitting the pilot beacons in this embodiment. Alternatively, multi-frequency pilot beacons can be provided wherever necessary within the CDMA system. The multi-frequency pilot beacon is useful in frequency hand-off operations and gathering information about cellular users in the CDMA system 800, Hayashi et al.; US-5457407, 19951000, Shu et al.; US-5467473, 19951100, Kahle et al.; US-5471591, 19951100, Edmondson et al.; US-5473575, 19951200, Farmwald et al., 365/230.06; US-5475642, 19951200, Taylor, 365/203; US-5481497, 19960100, Yamauchi et al., 365/189.05; US-5483497, 19960100, Mochizuki et al., 365/230.03; US-5497127, 19960300, Sauer; US-5498990, 19960300, Leung et al., 327/323; US-5506814, 19960400, Hush et al., 365/230.03; US-5508638, 19960400, Cowles et al.; US-5513327, 19960400, Farmwald et al.; US-5537352, 19960700, Meyer et al., 365/189.02; US-5546537, 19960800, McClure; US-5548786, 19960800, Amini et al.; US-5568077, 19961000, Sato et al.; US-5574698, 19961100, Raad, 365/230.06; US-5576645, 19961100, Farwell; US-5578941, 19961100, Sher et al.; US-5581197, 19961200, Motley et al.; US-5590073, 19961200, Arakawa et al., 365/185.08; US-5619473, 19970400, Hotta, 365/238.5; US-5621690, 19970400, Jungroth et al., 365/200; US-5627780, 19970500, Malhi, 365/185.09; US-5627791, 19970500, Wright et al., 365/222; US-5631872, 19970500, Naritake et al., 365/227; US-5636163, 19970600, Furutani et al., 365/189.01; US-5636173, 19970600, Schaefer, 365/230.03; US-5636174, 19970600, Rao, 365/230.03; US-5638335, 19970600, Akiyama et al., 365/230.03; US-5650971, 19970700, Longway et al., 365/207; US-5655105, 19970800, McLaury; US-5668763, 19970900, Fujioka et al., 365/200; US-5682342, 19971000, Suzuki; US-5691953, 19971100, Yeh et al., 365/230.08; US-5694065, 19971200, Hamasaki et al.; US-5717894, 19980200, Vivio; US-5737276, 19980400, Shin et al., 365/230.08; US-5761147, 19980600, Lindner et al., 365/230.05; US-5809228, 19980900, Langendorf et al.; US-RE35934, 19981000, Takai, 365/189.05; US-5831929, 19981100, Manning, 365/233; US-5841717, 19981100, Yamaguchi, 365/205; US-5847577, 19981200, Trimberger; US-5854911, 19981200, Watkins; US-5870347, 19990200, Keeth et al., 365/230.03; US-5903916, 19990500, Pawlowski et al., 365/189.04; US-5905874, 19990500, Johnson; US-5923594, 19990700, Voshell, 365/189.05; US-5946245, 19990800, Brown et al., 365/201; US-5956502, 19990900, Manning, 713/503; US-6014759, 20000100, Manning, 714/042; US-6023177, 20000200, Kim et al., 327/142; US-6035393, 20000300, Glew et al., 712/237; US-6044429, 20000300, Ryan et al., 710/131; US-6061772, 20000500, Webber et al., 711/169; US-6085283, 20000700, Toda, 711/104; US-6088774, 20000700, Gillingham, 711/167; US-6091646, 20000700, Voshell, 365/189.05; US-6134634, 20001000, Marshall, Jr. et al., 711/143; US-6154814, 20001100, Uesugi, 711/133; US-6233670, 20010500, Ikenaga et al., 712/218; US-6374334, 20020400, Suga et al., 710/244