Wireless QoS by hardware packet sizing, data rate modulation, and transmit power controlling based on the accumulated packet drop rate

• US 20070165526A1
• Filed: 10/24/2006
• Published: 07/19/2007
• Est. Priority Date: 01/14/2006
• Status: Abandoned Application

• Current Assignee: Hyun Lee
• Original Assignee: Hyun Lee
• Inventors: Lee, Hyun
• Application Number:
  US11/585,606
• Publication Number:
  US 20070165526A1
• Time in Patent Office: Days
• US Class Current: 370/230
• CPC Class Codes: H04L 1/0003 by switching between different modulation schemes
• CPC Class Codes: H04L 1/0007 by modifying the frame length
• CPC Class Codes: H04L 1/0016 involving special memory structures, e.g. look-up tables
• CPC Class Codes: H04L 1/0018 based on latency requirement
• CPC Class Codes: H04L 47/10 Flow control; Congestion control
• CPC Class Codes: H04L 47/25 with rate being modified by the source upon detecting a change of network conditions
• CPC Class Codes: H04L 47/36 by determining packet size, e.g. maximum transfer unit [MTU]
• CPC Class Codes: H04W 24/00 Supervisory, monitoring or testing arrangements
• 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 28/10 Flow control between communication endpoints
• CPC Class Codes: H04W 28/22 Negotiating communication rate
• CPC Class Codes: H04W 28/24 Negotiating SLA [Service Level Agreement]; Negotiating QoS [Quality of Service]
• CPC Class Codes: H04W 52/0232 according to average transmission signal activity
• CPC Class Codes: H04W 52/20 using error rate
• CPC Class Codes: H04W 52/265 taking into account the quality of service QoS
• CPC Class Codes: H04W 52/267 taking into account the information rate
• CPC Class Codes: H04W 8/04 Registration at HLR or HSS [Home Subscriber Server]
• CPC Class Codes: Y02D 30/70 in wireless communication networks

Abstract

Two methods to improve the QoS. These methods can be applied individually or together. The first method is a packet sizing method, which is based on the Bit Error rate as well as the packet drop rate. The second method is a data transmit rate modulation method. The proposed methods in this invention, unlike the packet size reduction method that is in the WiMedia specification, enables the MAC to reduce and increase the packet size and the data transmit rate by working with the upper layer controller to maximize the data transfer rate, the transmitter power, and to minimize the packet drop rate.

Claims

1. An improving wireless qos by hardware packet sizing, data rate modulation, and transmit power controlling based on the accumulated packet drop rate for improving wireless qos by hardware packet sizing, data rate modulation, and transmit power controlling to support multiple simulatenous high data rate communication including streaming video, such as hdtv, comprising:

means for during the idle period, a device performs the range check, and program the mac with the expected bit error rate of the received signals from each device in the wireless network under average white gaussian noise (awgn) environment;

means for collecting the fcs mismatch rate, the average packet size, and/or the bit error rate (ber) under the current environmental condition where the sources of the channel noise could be the interference from other uwb signals or from the narrowband/broadband signals;

means for the upper layer (transport, network) layer selecting a qos improving method using the performance table (700), and instructing a designated transmitter to encode the packet with the qos improving method that would specify the packet size, the transmit power level, the data rate (or code rate), and/or error-correcting-code;

means for the receiver checking the bit error rate of the packet that is sent by the dedicated device transmitted with the qos improvement method;

means for indicating that, once the error rate is acceptable with the current qos improving method, the upper layer monitoring the channel noise level by instructing a device to periodically transmitting specific packets;

means for recognizing the start of type of wireless packet transfer;

means for indicating that the qos improvement process does not need to continue if the error rate is acceptable for the application;

means for indicating that, if the fcs mismatch rate is unacceptably high, the receiver starts walk on the performance table (700) for the purpose of finding the optimum data rate and the packet size as;

means for tuning the qos improving process for a particular application;

means for indicating that, after a qos improvement method as been selected, the software instructs the devices to encode the transmit packets with the select qos improving method for the particular application;

means for indicating that the increasing error rate during the normal operation would cause the software to restart the qos improving process until the fcs mismatch rate becomes acceptable for the given application;

means for indicating the selected qos improving method has improved the error rate to the acceptable level for the application;

means for indicating that the reduction in the channel noise during the normal operation allows the software to choose a less costly qos improvement method, and further improve the network throughput rate;

means for indicating that the error rate is at the level where the network can support the application;

means for indicating that either the system is reset or the application is completed the qos improvement process;

means for a performance table with each cell in the table indicating the % change of effective data rate from the adjacent cell by altering the transmit data rate and the packet payload (psdu) size;

means for holding the relative change of the effective data transfer rate as incremental change of the phy data rate and the packet size; and

means for representing the table organization where the row values are the phy data rate, and the column values are the packet sizes.

2. The improving wireless qos by hardware packet sizing, data rate modulation, and transmit power controlling based on the accumulated packet drop rate in accordance with claim 1, wherein said means for during the idle period, a device performs the range check, and program the mac with the expected bit error rate of the received signals from each device in the wireless network under average white gaussian noise (awgn) environment comprises a state idle.

3. The improving wireless qos by hardware packet sizing, data rate modulation, and transmit power controlling based on the accumulated packet drop rate in accordance with claim 1, wherein said means for collecting the fcs mismatch rate, the average packet size, and/or the bit error rate (ber) under the current environmental condition where the sources of the channel noise could be the interference from other uwb signals or from the narrowband/broadband signals comprises a state check error.

4. The improving wireless qos by hardware packet sizing, data rate modulation, and transmit power controlling based on the accumulated packet drop rate in accordance with claim 1, wherein said means for the upper layer (transport, network) layer selecting a qos improving method using the performance table (700), and instructing a designated transmitter to encode the packet with the qos improving method that would specify the packet size, the transmit power level, the data rate (or code rate), and/or error-correcting-code comprises a state select qos improving method &

notify transmitter.

5. The improving wireless qos by hardware packet sizing, data rate modulation, and transmit power controlling based on the accumulated packet drop rate in accordance with claim 1, wherein said means for the receiver checking the bit error rate of the packet that is sent by the dedicated device transmitted with the qos improvement method comprises a state, decode the qos improving method encoded packet &

check error rate.

6. The improving wireless qos by hardware packet sizing, data rate modulation, and transmit power controlling based on the accumulated packet drop rate in accordance with claim 1, wherein said means for indicating that, once the error rate is acceptable with the current qos improving method, the upper layer monitoring the channel noise level by instructing a device to periodically transmitting specific packets comprises a state, periodically check the error.

7. The improving wireless qos by hardware packet sizing, data rate modulation, and transmit power controlling based on the accumulated packet drop rate in accordance with claim 1, wherein said means for recognizing the start of type of wireless packet transfer comprises an event, rx packet reception.

8. The improving wireless qos by hardware packet sizing, data rate modulation, and transmit power controlling based on the accumulated packet drop rate in accordance with claim 1, wherein said means for indicating that the qos improvement process does not need to continue if the error rate is acceptable for the application comprises a decision point acceptable rte.

9. The improving wireless qos by hardware packet sizing, data rate modulation, and transmit power controlling based on the accumulated packet drop rate in accordance with claim 1, wherein said means for indicating that, if the fcs mismatch rate is unacceptably high, the receiver starts walk on the performance table (700) for the purpose of finding the optimum data rate and the packet size as comprises a decision point, unacceptable rate.

10. The improving wireless qos by hardware packet sizing, data rate modulation, and transmit power controlling based on the accumulated packet drop rate in accordance with claim 1, wherein said means for tuning the qos improving process for a particular application comprises an action, continue checking the same type of rx packet.

11. The improving wireless qos by hardware packet sizing, data rate modulation, and transmit power controlling based on the accumulated packet drop rate in accordance with claim 1, wherein said means for indicating that, after a qos improvement method as been selected, the software instructs the devices to encode the transmit packets with the select qos improving method for the particular application comprises an action, qos improving encode completed.

12. The improving wireless qos by hardware packet sizing, data rate modulation, and transmit power controlling based on the accumulated packet drop rate in accordance with claim 1, wherein said means for indicating that the increasing error rate during the normal operation would cause the software to restart the qos improving process until the fcs mismatch rate becomes acceptable for the given application comprises a decision point, unacceptable error rate.

13. The improving wireless qos by hardware packet sizing, data rate modulation, and transmit power controlling based on the accumulated packet drop rate in accordance with claim 1, wherein said means for indicating the selected qos improving method has improved the error rate to the acceptable level for the application comprises a decision point, fcs mismatch rate acceptable.

14. The improving wireless qos by hardware packet sizing, data rate modulation, and transmit power controlling based on the accumulated packet drop rate in accordance with claim 1, wherein said means for indicating that the reduction in the channel noise during the normal operation allows the software to choose a less costly qos improvement method, and further improve the network throughput rate comprises a decision point, much lower error rate.

15. The improving wireless qos by hardware packet sizing, data rate modulation, and transmit power controlling based on the accumulated packet drop rate in accordance with claim 1, wherein said means for indicating that the error rate is at the level where the network can support the application comprises an observation, error rate acceptable.

16. The improving wireless qos by hardware packet sizing, data rate modulation, and transmit power controlling based on the accumulated packet drop rate in accordance with claim 1, wherein said means for indicating that either the system is reset or the application is completed the qos improvement process comprises a done, reset system reset.

17. The improving wireless qos by hardware packet sizing, data rate modulation, and transmit power controlling based on the accumulated packet drop rate in accordance with claim 1, wherein said means for a performance table with each cell in the table indicating the % change of effective data rate from the adjacent cell by altering the transmit data rate and the packet payload (psdu) size comprises a table, performance table.

18. The improving wireless qos by hardware packet sizing, data rate modulation, and transmit power controlling based on the accumulated packet drop rate in accordance with claim 1, wherein said means for holding the relative change of the effective data transfer rate as incremental change of the phy data rate and the packet size comprises a data transfer rate, contents of performance table.

19. The improving wireless qos by hardware packet sizing, data rate modulation, and transmit power controlling based on the accumulated packet drop rate in accordance with claim 1, wherein said means for representing the table organization where he row values are the phy data rate, and the column values are the packet sizes comprises a table organization, cells in the table.

20. An improving wireless qos by hardware packet sizing, data rate modulation, and transmit power controlling based on the accumulated packet drop rate for improving wireless qos by hardware packet sizing, data rate modulation, and transmit power controlling to support multiple simulatenous high data rate communication including streaming video, such as hdtv, comprising:

a state idle, for during the idle period, a device performs the range check, and program the mac with the expected bit error rate of the received signals from each device in the wireless network under average white gaussian noise (awgn) environment;

a state check error, for collecting the fcs mismatch rate, the average packet size, and/or the bit error rate (ber) under the current environmental condition where the sources of the channel noise could be the interference from other uwb signals or from the narrowband/broadband signals;

a state select qos improving method &

notify transmitter, for the upper layer (transport, network) layer selecting a qos improving method using the performance table (700), and instructing a designated transmitter to encode the packet with the qos improving method that would specify the packet size, the transmit power level, the data rate (or code rate), and/or error-correcting-code;

a state, decode the qos improving method encoded packet &

check error rate, for the receiver checking the bit error rate of the packet that is sent by the dedicated device transmitted with the qos improvement method;

a state, periodically check the error, for indicating that, once the error rate is acceptable with the current qos improving method, the upper layer monitoring the channel noise level by instructing a device to periodically transmitting specific packets;

an event, rx packet reception, for recognizing the start of type of wireless packet transfer;

a decision point acceptable rte, for indicating that the qos improvement process does not need to continue if the error rate is acceptable for the application;

a decision point, unacceptable rate, for indicating that, if the fcs mismatch rate is unacceptably high, the receiver starts walk on the performance table (700) for the purpose of finding the optimum data rate and the packet size as;

an action, continue checking the same type of rx packet, for tuning the qos improving process for a particular application;

an action, qos improving encode completed, for indicating that, after a qos improvement method as been selected, the software instructs the devices to encode the transmit packets with the select qos improving method for the particular application;

a decision point, unacceptable error rate, for indicating that the increasing error rate during the normal operation would cause the software to restart the qos improving process until the fcs mismatch rate becomes acceptable for the given application;

a decision point, fcs mismatch rate acceptable, for indicating the selected qos improving method has improved the error rate to the acceptable level for the application;

a decision point, much lower error rate, for indicating that the reduction in the channel noise during the normal operation allows the software to choose a less costly qos improvement method, and further improve the network throughput rate;

an observation, error rate acceptable, for indicating that the error rate is at the level where the network can support the application;

a done, reset system reset, for indicating that either the system is reset or the application is completed the qos improvement process;

a table, performance table, for a performance table with each cell in the table indicating the % change of effective data rate from the adjacent cell by altering the transmit data rate and the packet payload (psdu) size;

a data transfer rate, contents of performance table, for holding the relative change of the effective data transfer rate as incremental change of the phy data rate and the packet size; and

a table organization, cells in the table, for representing the table organization where he row values are the phy data rate, and the column values are the packet sizes.