Method for adapting WAP-based transmissions

• US 7,522,534 B2
• Filed: 08/08/2003
• Issued: 04/21/2009
• Est. Priority Date: 08/08/2002
• Status: Expired due to Fees

• Current Assignee: fg microtec GmbH
• Original Assignee: fg microtec GmbH
• Inventors: Kelz, Thomas
• Primary Examiner(s): LEE, CHI HO A
• Application Number:
  US10/523,841
• Publication Number:
  US 20060165006A1
• Time in Patent Office: 2,083 Days
• Field of Search: 370/252, 370/465, 370/338
• US Class Current: 370/252
• CPC Class Codes: H04M 1/72445 for supporting Internet browser applications
• CPC Class Codes: H04W 28/18 Negotiating wireless communication parameters
• CPC Class Codes: H04W 80/00 Wireless network protocols or protocol adaptations to wireless operation
• CPC Class Codes: H04W 88/02 Terminal devices

Abstract

The invention relates to a method which makes decisions, which can be applied an various WAP protocol, based on calculations which determine the future quality of a link. Short-term forecasting involving fundamental decisions such as the structure of a link or the transmission or reception of data occurs. Short-term forecasting is used to modify certain parameters which are linked to the transmission of packets.

Claims

1. A method for controlling a mobile terminal that determines parameters for a WAP-based transmission via a wireless connection, said parameters being determined based on short-term and long-term predictions about the quality of the wireless connection, said method comprising:

making by the mobile terminal a first determination whether to suspend or resume the transmission based on the long-term predictions; and

making by the mobile terminal a second determination whether to change one or more of the following parameters based on the short-term predictions;

the number of asynchronous transactions, the delay of a retransmission, an alteration in the burst mode, and the packet size;

suspending or resuming by the mobile terminal the transmission based on the result of the first determination; and

changing by the mobile terminal the parameters based on the result of the second determination.

2. The method as claimed in claim 1, wherein, if the short-term and long-term predictions predict an imminent cell change:

adapting the packet size to terminate the transmission before the cell change; and

waiting with the next packet for the cell change to have taken place.

3. The method as claimed claim 1, wherein, if the short-term and long-term predictions rule-out packet loss during the transmission, transmitting a next packet group (burst) is transmitted in enforced fashion in order to ensure continual data transmission and to minimize breaks.

4. The method as claimed in claim 1, wherein, if the short-term and long-term predictions predict a shortfall below a particular quality for the connection, delaying the transmission a packet until the quality rises.

5. The method as claimed in claim 1, wherein, if the short-term and long-term predictions predict a shortfall below a particular quality, reducing the packet size.

6. The method as claimed in claim 1, wherein, if the short-term and long-term predictions predict a shortfall below a particular quality, altering the number of parallel transactions, with the number being increased and the size of the packets being reduced, in particular.

7. The method as claimed in claim 1, wherein, if the short-term and long-term predictions predict an excess over a particular quality, increasing the burst rate.

8. The method as claimed in claim 1, wherein the short-term and long-term predictions are determined by a multidimensional stochastic algorithm, which uses covariance matrices, neural networks, genetic algorithms and/or simulated annealing.

9. The method as claimed in claim 1, wherein an algorithm calculates time-dependent statements about the quality.

10. The method as claimed in claim 1, wherein the short-term and long-term predictions are based on one or more of the following:

received signal code power (RSCP), position, direction, level, speed, received signal strength indicator (RSSI), block size, a codec, a header compression method, SNR, volume of traffic, transmission delay, block error rate, bit error rate and/or carrier to interference ratio (C/I).

11. A computer-readable data storage device including program instructions that when executed by a processor, controls a mobile terminal to perform a method for determining parameters for a WAP-based transmission via a wireless connection, said parameters being determined based on short-term and long-term predictions about the quality of the wireless connection,

said method comprising:

making a first determination whether to suspend or resume the transmission based on the long-term predictions; and

making a second determination whether to change one or more of the following parameters based on the short-term predictions;

the number of asynchronous transactions, the delay of a retransmission, an alteration in the burst mode, and the packet size.