Patent US7190684 - Method and system for UMTS packet transmission scheduling on shared downlink ...

(30)

Prior Publication Data

US 2002/0089952 Al Jul. 11, 2002

Foreign Application Priority Data

Nov. 22, 2000 (EP) 00310343

(51) Int. CI.

H04B 7/216 (2006.01)
H04L12/28 (2006.01)
H04Q 7/24 (2006.01)
H04J 3/16 (2006.01)

(52) U.S. CI 370/335; 370/230; 370/338;

370/465

(58) Field of Classification Search 370/395.4,

370/349, 341, 332, 329, 335, 348, 342, 441, 370/395.42, 395.21, 466, 467, 468, 469, 370/476, 230, 338, 465 See application file for complete search history.

(56) References Cited

U.S. PATENT DOCUMENTS

6,236,656 Bl * 5/2001 Westerberg et al 370/395.4

(Continued)
FOREIGN PATENT DOCUMENTS
WO WO 00 33589 6/2000

OTHER PUBLICATIONS

3rd Generation Partnership Project; Technical Specification Group Radio Access Network—Dec. 99, pp. 1, 15.

Primary Examiner—Ricky Q. Ngo
Assistant Examiner—Feben Micael Haile

(57)

ABSTRACT

The invention relates to packet transmission scheduling and specifically to UMTS packet transmission scheduling.

It is an object of the invention to provide an improved method for packet transmission scheduling, especially on downlink shared channels and an improved packet transmission scheduling system, both the improved method and the system especially adapted to be used for UMTS systems.

The invention proposes a quality of service scheduling of multiple data flows in a CDMA system, wherein

a priority order of protocol data units (PDU) of multiple data flows with regard to predefined flow's quality of service requirements is determined and a serving of the protocol data units (PDU) is performed by dynamically creating transport block sets (TBS) to be transmitted to the physical layer (PHY-layer) with regard to the defined priority order and in dependence of allocated radio resource constraints.

23 Claims, 3 Drawing Sheets