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Pub. No.:    WO/1999/009677    International Application No.:    PCT/FI1998/000639
Publication Date: 25.02.1999 International Filing Date: 19.08.1998
H04B 7/06 (2006.01)
Applicants: NOKIA TELECOMMUNICATIONS OY [FI/FI]; Keilalahdentie 4 FIN-02150 Espoo (FI) (AL, AM, AT, AU, AZ, BA, BB, BE, BF, BG, BJ, BR, BY, CA, CF, CG, CH, CI, CM, CN, CU, CY, CZ, DE, DK, EE, ES, FI, FR, GA, GB, GE, GH, GM, GN, GR, GW, HR, HU, ID, IE, IL, IS, IT, JP, KE, KG, KP, KR, KZ, LC, LK, LR, LS, LT, LU, LV, MC, MD, MG, MK, ML, MN, MR, MW, MX, NE, NL, NO, NZ, PL, PT, RO, RU, SD, SE, SG, SI, SK, SL, SN, SZ, TD, TG, TJ, TM, TR, TT, UA, UG, UZ, VN, YU, ZW only).
NIEMELÄ, Kari [FI/FI]; (FI) (For US Only)
Inventors: NIEMELÄ, Kari; (FI)
Agent: PATENTTITOIMISTO TEKNOPOLIS KOLSTER OY; c/o Kolster OY AB Iso Roobertinkatu 23 P.O. Box 148 FIN-00121 Helsinki (FI)
Priority Data:
973422 20.08.1997 FI
Abstract: front page image
(EN)The invention relates to a transmission method and a radio system comprising a transmitter (100) and a receiver (200) that communicate with each other by means of signals they have transmitted. The signals propagate along different paths from the transmitter (100) to the receiver (200), which comprises means (201) for combining the signals that have propagated along different paths after the reception. The radio system comprises transmitting means (101) for transmitting for each connection at least two signals that are combined in the means (201) into one signal, and measuring means (202) for measuring the combined signal and for estimating the optimality of the transmission. The radio system also comprises control means (102) that adjust, on the basis of the measurement and estimation, the phase of at least the signal that is to be transmitted in the downlink direction in the signal transmission by the transmitting means (101) in order to decrease accumulation of signals during the combining of the signals.
(FR)L'invention concerne un procédé de transmission et une liaison radio comprenant un émetteur (100) et un récepteur (200) communiquant entre eux au moyen de signaux qu'ils ont transmis. Les signaux sont propagés le long de trajectoires différentes de celle de l'émetteur (100) au récepteur (200), ce qui inclut un dispositif (201) de combinaison des signaux se propageant le long de trajectoires différentes après la réception. La liaison radio comprend un dispositif de transmission (101) destiné à transmettre pour chaque connexion au moins deux signaux combinés dans le dispositif (201) en un signal unique, et un dispositif de mesure (202) destiné à mesurer le signal combiné et à estimer l'optimalité de la transmission. La liaison radio comprend également un dispositif de commande (102) qui ajuste, sur la base de la mesure et de l'estimation, la phase du signal devant être transmis dans la direction de liaison descendante lors de la transmission de signaux par le dispositif de transmission (101) afin de réduire l'accumulation de signaux pendant la combinaison des signaux.
Designated States: AL, AM, AT, AU, AZ, BA, BB, BG, BR, BY, CA, CH, CN, CU, CZ, DE, DK, EE, ES, FI, GB, GE, GH, GM, HR, HU, ID, IL, IS, JP, KE, KG, KP, KR, KZ, LC, LK, LR, LS, LT, LU, LV, MD, MG, MK, MN, MW, MX, NO, NZ, PL, PT, RO, RU, SD, SE, SG, SI, SK, SL, TJ, TM, TR, TT, UA, UG, US, UZ, VN, YU, ZW.
African Regional Intellectual Property Organization (GH, GM, KE, LS, MW, SD, SZ, UG, ZW)
Eurasian Patent Organization (AM, AZ, BY, KG, KZ, MD, RU, TJ, TM)
European Patent Office (AT, BE, CH, CY, DE, DK, ES, FI, FR, GB, GR, IE, IT, LU, MC, NL, PT, SE)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, GW, ML, MR, NE, SN, TD, TG).
Publication Language: English (EN)
Filing Language: Finnish (FI)