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1. (WO2010028351) METHOD AND APPARATUS FOR PREDICTING CHANNEL QUALITY INDICATOR IN A HIGH SPEED DOWNLINK PACKET ACCESS SYSTEM
Latest bibliographic data on file with the International Bureau   

Pub. No.:    WO/2010/028351    International Application No.:    PCT/US2009/056206
Publication Date: 11.03.2010 International Filing Date: 08.09.2009
IPC:
H04L 1/00 (2006.01)
Applicants: QUALCOMM Incorporated [US/US]; Attn: International IP Administration 5775 Morehouse Drive San Diego, California 92121-1714 (US) (For All Designated States Except US).
CUI, Tao [CN/US]; (US) (For US Only).
LU, Feng [CN/US]; (US) (For US Only).
SETHURAMAN, Vignesh [IN/US]; (US) (For US Only).
RAO, Subramanya P. [IN/US]; (US) (For US Only).
SUBRAHMANYA, Parvathanathan [US/US]; (US) (For US Only).
GOTETI, Anil Kumar [IN/US]; (US) (For US Only)
Inventors: CUI, Tao; (US).
LU, Feng; (US).
SETHURAMAN, Vignesh; (US).
RAO, Subramanya P.; (US).
SUBRAHMANYA, Parvathanathan; (US).
GOTETI, Anil Kumar; (US)
Agent: JACOBS, Jeffrey D.; Attn: International IP Administration 5775 Morehouse Drive San Diego, California 92121-1714 (US)
Priority Data:
61/095,270 08.09.2008 US
61/097,848 17.09.2008 US
12/554,202 04.09.2009 US
Title (EN) METHOD AND APPARATUS FOR PREDICTING CHANNEL QUALITY INDICATOR IN A HIGH SPEED DOWNLINK PACKET ACCESS SYSTEM
(FR) PROCÉDÉ ET APPAREIL PERMETTANT DE PRÉDIRE UN INDICATEUR DE QUALITÉ DE CANAL DANS UN SYSTÈME À ACCÈS PAR PAQUETS EN LIAISON DESCENDANTE À VITESSE ÉLEVÉE
Abstract: front page image
(EN)Various embodiments are disclosed which predict the channel quality indicator (CQI) in High Speed Downlink Packet Access (HSDPA). The accuracy of CQI is crucial for HSDPA performance. In some HSDPA systems the CQI may be as much as three (3) subframes stale. Accordingly, the prediction of CQI values is required in order to efficiently schedule data for transmission over the communication channel. Various embodiments disclose first order adaptive IIR filters which are significantly less complex than the finite impulse response (FIR) counterparts and achieve similar accuracy. By minimizing the mean squared error (MSE), an exact gradient descent algorithm may be used as well as two embodiment pseudolinear regression algorithms.
(FR)L'invention concerne différents modes de réalisation qui prédisent l'indicateur de qualité de canal (CQI) dans un accès par paquets en liaison descendante à vitesse élevée (HSDPA). La précision du CQI est cruciale pour la performance du HSDPA. Dans certains systèmes HSDPA, le CQI peut correspondre à trois (3) sous-trames. En conséquence, la prédiction de valeurs CQI est requise pour planifier efficacement des données à transmettre par le biais du canal de communication. Divers modes de réalisation concernent des filtres adaptatifs de premier ordre (IIR), qui sont beaucoup moins complexes que leurs homologues à réponse impulsionnelle finie (FIR) et assurent une précision similaire. En minimisant l'erreur quadratique moyenne (MSE), il est possible d'utiliser un algorithme de descente de gradient exact ainsi que les deux algorithmes de régression pseudo-linéaires du mode de réalisation.
Designated States: AE, AG, AL, AM, AO, AT, AU, AZ, BA, BB, BG, BH, BR, BW, BY, BZ, CA, CH, CL, CN, CO, CR, CU, CZ, DE, DK, DM, DO, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, HR, HU, ID, IL, IN, IS, JP, KE, KG, KM, KN, KP, KR, KZ, LA, LC, LK, LR, LS, LT, LU, LY, MA, MD, ME, MG, MK, MN, MW, MX, MY, MZ, NA, NG, NI, NO, NZ, OM, PE, PG, PH, PL, PT, RO, RS, RU, SC, SD, SE, SG, SK, SL, SM, ST, SV, SY, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, ZA, ZM, ZW.
African Regional Intellectual Property Organization (BW, GH, GM, KE, LS, MW, MZ, NA, SD, SL, SZ, TZ, UG, ZM, ZW)
Eurasian Patent Organization (AM, AZ, BY, KG, KZ, MD, RU, TJ, TM)
European Patent Office (AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HR, HU, IE, IS, IT, LT, LU, LV, MC, MK, MT, NL, NO, PL, PT, RO, SE, SI, SK, SM, TR)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, ML, MR, NE, SN, TD, TG).
Publication Language: English (EN)
Filing Language: English (EN)