Method for the transmission of data packets in a radio communication system

• US 20050018644A1
• Filed: 08/26/2002
• Published: 01/27/2005
• Est. Priority Date: 08/24/2001
• Status: Active Grant

• Current Assignee: Siemens AG
• Original Assignee: Siemens AG
• Inventors: Gessner, Christina, Kroth, Norbert, Meiling, Axel
• Granted Patent: US 8,023,490 B2
• Time in Patent Office: Days
• US Class Current: 370/349
• CPC Class Codes: H04L 1/1812 Hybrid protocols; Hybrid automatic repeat request [HARQ]
• CPC Class Codes: H04L 1/1887 Scheduling and prioritising arrangements
• CPC Class Codes: H04W 72/543 based on requested quality, e.g. QoS
• CPC Class Codes: H04W 72/569 of the traffic information

Abstract

Disclosed is a method for the transmission of data packets in aradio communication system, wherein the transmission of data packets of a data flow having a first priority (Prio) with respect to the transmission of data packets is interrupted by that of a second priority (Prio) if the second priority (Prio) is higher than the first priority (Prio).

Claims

1. Method for transmitting data packets in a radio communication system, wherein

a data packet (Packet 3) of a data stream having a first priority (Prio 5) is transmitted by a first radio station (NB, UE, Unit A) to a second radio station (UE, NB, Unit B), and a retransmission of the data packet (Packet 3) by the first radio station (NB, UE, Unit A) is requested by the second radio station (UE, NB, Unit B) if the data packet is not received correctly,

characterized in that

the retransmission of the data packet (Packet 3) of the data stream with the first priority (Prio 5) is interrupted by the first radio station (NB, UE, Unit A) in order to allow the transmission of a data packet (Packet 1) of a data stream with a second priority (Prio 1) to the second radio station (UE, NB, Unit B) if the second priority (Prio 1) is higher than the first priority (Prio 5).

2. Method according to claim 1, wherein

the priorities (Prio 1, Prio 5) are defined as a function of a respective quality-of-service requirement.

3. Method according to claim 1, wherein

the priorities (Prio 1, Prio 5) are defined independently of a respective quality-of-service requirement.

5. Method according to one of the preceding claims, wherein the retransmission of an incorrectly received data packet is performed according to an ARQ-based process.

6. Method according to claim 5, wherein

the ARQ-based process is terminated upon expiration of a time interval.

7. Radio station of a radio communication system for transmitting data packets according to the method as claimed in claim 1.

4. Method according to a preceding claim, wherein

each data packet (Packet 3, Packet 1) is provided with a priority and/or quality-of-service indicator.