Method of optimizing the performance of a mobile radio system

• US 20040228318A1
• Filed: 01/28/2004
• Published: 11/18/2004
• Est. Priority Date: 01/29/2003
• Status: Abandoned Application

• Current Assignee: Evolium SAS (Nokia Corporation)
• Original Assignee: Evolium SAS (Nokia Corporation)
• Inventors: Bourdeaut, Stanislas
• Application Number:
  US10/765,133
• Publication Number:
  US 20040228318A1
• Time in Patent Office: Days
• US Class Current: 370/349
• CPC Class Codes: H04L 1/0001 Systems modifying transmission characteristics according to link quality, e.g. power backoff adaptive data allocation for multicarrier modulation H04L5/0044; controlling transmission power for radio systems H04W52/04
• CPC Class Codes: H04L 1/0003 by switching between different modulation schemes
• CPC Class Codes: H04L 1/0009 by adapting the channel coding H04L1/1812 takes precedence
• CPC Class Codes: H04L 1/1614 using bitmaps
• CPC Class Codes: H04W 28/06 Optimizing the usage of the radio link, e.g. header compression, information sizing , discarding information system modifying transmission characteristic according to link quality by modifying frame length H04L1/0007; dynamic adaptation of the packet size for flow control or congestion control H04L47/365
• CPC Class Codes: H04W 28/22 Negotiating communication rate

Abstract

A method of optimizing the performance of a mobile radio system in which different transfer modes correspond to different bit rates corresponding to different modulation schemes and the protocol architecture uses a radio link control layer that can operate in an acknowledged mode or in a non-acknowledged mode, in which method, in a transfer mode corresponding to the highest bit rates, acknowledgment information is sent in the non-acknowledged mode from a radio link control receiver to a radio link control sender and can be taken into account by the radio link control sender.

Claims

1. A method of optimizing the performance of a mobile radio system in which different transfer modes correspond to different bit rates corresponding to different modulation schemes and the protocol architecture uses a radio link control layer that can operate in an acknowledged mode or in a non-acknowledged mode, in which method, in a transfer mode corresponding to the highest bit rates, acknowledgment information is sent in the non-acknowledged mode from a radio link control receiver to a radio link control sender and can be taken into account by the radio link control sender.

2. A method according to claim 1, wherein said transfer modes include the General Packet Radio Service (GPRS) mode and the Enhanced General Packet Radio Service (EGPRS) mode.

3. A method according to either claim 1, wherein said acknowledgment information includes a Starting Sequence Number (SSN) and a Received Block Bitmap (RBB) sent in an acknowledgment/non-acknowledgment (ACK/NACK) message.

4. A method according to claim 1, wherein said acknowledgment information is taken into account by an RLC sender to estimate transmission quality.

5. A method according to claim 4, wherein said transmission quality estimate is used for radio link adaptation.

6. A mobile station including means for implementing a method according to claim 1.

7. Mobile radio network equipment, including means for implementing a method according to claim 1.

8. A mobile radio system including means for implementing a method according to claim 1.