Method for controlling multi-user TCP/IP access over a satellite communication channel

• US 7,852,855 B1
• Filed: 06/04/2007
• Issued: 12/14/2010
• Est. Priority Date: 06/04/2007
• Status: Expired due to Fees

• Current Assignee: the united states of america as represented by the secretary of the navy
• Original Assignee: the united states of america as represented by the secretary of the navy
• Inventors: Gooding, Charles Peter, Aitken, David J.
• Primary Examiner(s): Hu; Jinsong
• Assistant Examiner(s): TRAN, MONG-THUY THI
• Application Number:
  US11/757,710
• Time in Patent Office: 1,289 Days
• Field of Search: 455/427, 455/98, 455/180.2, 455/188.2, 455450-453, 455/512, 455/428, 370/277, 370/316, 370/322, 3703952-39543, 370/237
• US Class Current: 370/395.42
• CPC Class Codes: H04B 7/18584 Arrangements for data networking, i.e. for data packet routing, for congestion control data switching networks H04L12/00
• CPC Class Codes: H04L 47/70 Admission control; Resource allocation
• CPC Class Codes: H04L 47/808 User-type aware
• CPC Class Codes: H04L 47/822 Collecting or measuring resource availability data

Abstract

A method is provided for controlling TCP/IP access includes receiving a request from a requestor for data transmission over a satellite communication channel, determining whether the request for data transmission has collided with a separate request for data transmission, if the request for data transmission has collided with a separate request for data transmission, then accepting the request for data transmission, else, temporarily denying the access to the satellite communication channel, determining the priority of the requestor and the number of users on the satellite communications channel, determining the access to the satellite communication channel of the requestor based on the priority of the requestor and the number of users on the satellite communication channel, and monitoring access to the satellite communication channel based on the priority of the requestor and the number of users on the satellite communication channel.

Claims

1. A method for controlling multi-user TCP/IP access comprising the steps of:

receiving at least one request from at least one requestor for TCP/IP data transmission over a satellite communication channel, the requestor having a predetermined priority, wherein the satellite communication channel uses a TDMA controller and is a half-duplex, low-bandwidth, ultra-high frequency communication channel having a bandwidth ranging from about 9600 baud to about 38 kbps and a latency ranging from about 150 ms to about 180 ms;

determining that the request for TCP/IP data transmission has not collided with a separate request for TCP/IP data transmission and accepting the request for TCP/IP data transmission;

determining a number of users on the satellite communication channel;

granting the requestor access to the satellite communication channel based on the requestor'"'"'s predetermined priority and the number of users on the satellite communication channel; and

assigning a data slot to the requestor, the data slot having a data slot size based upon the requestor'"'"'s predetermined priority, the number of users on the satellite communication channel, and a bandwidth requirement of data to be transmitted.

2. The method for controlling multi-user TCP/IP access of claim 1 further comprising the step of dynamically adjusting the data slot size based upon one or more additional requestors accessing the satellite communication channel, the priority of the additional requestors accessing the satellite communication channel, and the data type to be transmitted by the additional requestors on the satellite communication channel.

3. The method for controlling multi-user TCP/IP access of claim 2, wherein the step of granting the requestor access to the satellite communication channel comprises the steps of:

determining if the requestor has a high priority;

if the requestor has a high priority, then determining if another high priority user is on the satellite communication channel;

if another high priority user is on the satellite communication channel, then granting the requestor access to the satellite communication channel, wherein the access to the satellite communication channel is shared among the requestor and the another high priority user, and assigning a data slot to the requestor;

if another high priority user is not on the satellite communication channel, then granting the requestor exclusive access to the satellite communications channel;

if the requestor does not have a high priority, then determining if a high priority user is on the satellite communication channel;

if a high priority user is on the satellite communication channel, then denying the requestor access to the satellite communication channel, else, determining if the maximum number of users are on the satellite communication channel; and

if the maximum number of users are on the satellite communication channel, then denying the requestor access to the satellite communication channel, else, granting the requestor access to the satellite communication channel, wherein the access to the satellite communication channel is shared among the requestor and lower priority users, and assigning a data slot to the requestor.

4. The method for controlling multi-user TCP/IP access of claim 3, wherein the step of assigning a data slot to the requestor comprises the steps of:

determining if the requestor has a high priority;

if the requestor has a high priority, then determining if another high priority user is currently on the satellite communication channel;

if another high priority user is currently on the satellite communication channel, then assigning a first data slot size to the requestor, else, assigning a second data slot size to the requestor;

if the requestor does not have a high priority, then determining if a low number of users are currently on the satellite communication channel;

if a low number of users are currently on the satellite communication channel, then assigning the second data slot size to the requestor, else, determining if the data to be transmitted by the requestor requires low-bandwidth; and

if the data to be transmitted by the requestor does not require low-bandwidth, then assigning the second data slot size to the requestor, else, assigning the first data slot size to the requestor, wherein the first data slot size is less than the second data slot size.

5. The method for controlling multi-user TCP/IP access of claim 1 further comprising the step of monitoring access to the satellite communication channel based on the requestor'"'"'s predetermined priority and the number of users on the satellite communication channel.

6. The method for controlling multi-user TCP/IP access of claim 5, wherein the step of monitoring access to the satellite communication channel comprises the steps of:

determining if a new user is on the satellite communication channel;

if a new user is not on the satellite communication channel, maintaining the current user level of access to the satellite communication channel;

if a new user is on the satellite communication channel, determining if the new user has a high priority; and

if the new user does not have a high priority, then dividing the level of access to the satellite communication channel among the users of the satellite communication channel, wherein each user shares the same level of access to the satellite communication channel, else, pausing the access of lower priority users to the satellite communication channel.

7. The method for controlling multi-user TCP/IP access of claim 6 further comprising the steps of:

determining if another high priority user is on the satellite communication channel;

if another high priority user is on the satellite communication channel, then granting the new user shared access to the satellite communication channel with the high priority users on the satellite communication channel; and

if another high priority user is not on the satellite communication channel, then granting the new user exclusive access to the satellite communication channel.

8. The method for controlling multi-user TCP/IP access of claim 7 further comprising the steps of:

determining if a termination request has been received from a high priority user;

if a termination request has been received from a high priority user, then terminating the access of the high priority user to the satellite communication channel and resuming access of the lower priority users to the satellite communication channel; and

if a termination request has not been received from a high priority user, then maintaining the current level of access to the users of the satellite communication channel.

9. The method for controlling multi-user TCP/IP access of claim 8 wherein the step of resuming access of the lower priority users to the satellite communication channel includes resuming access without loss of information.

10. The method for controlling multi-user TCP/IP access of claim 1, wherein the at least one request for TCP/IP data transmission is a request involving transmission of voice data.

11. The method for controlling multi-user TCP/IP access of claim 1, wherein the at least one request for TCP/IP data transmission is a request involving transmission of video data.

12. A method for controlling multi-user TCP/IP access comprising the steps of:

receiving at least one request from at least one requestor for TCP/IP data transmission over a satellite communication channel;

determining whether the at least one request for TCP/IP data transmission has collided with a separate request for TCP/IP data transmission;

if the at least one request for TCP/IP data transmission has not collided with a separate request for TCP/IP data transmission, then accepting the at least one request for TCP/IP data transmission, else, temporarily denying access to the satellite communication channel;

determining the priority of the requestor and the number of users on the satellite communications channel;

determining the access to the satellite communication channel of the requestor based on the priority of the requestor and the number of users on the satellite communication channel, the determination comprising the steps of;

determining if the requestor has a high priority;

if the requestor has a high priority, then determining if another high priority user is on the satellite communication channel;

if another high priority user is on the satellite communication channel, then granting the requestor access to the satellite communication channel, wherein the access to the satellite communication channel is shared among the requestor and the another high priority user, and assigning a data slot to the requestor;

if another high priority user is not on the satellite communication channel, then granting the requestor exclusive access to the satellite communications channel;

if the requestor does not have a high priority, then determining if a high priority user is on the satellite communication channel;

if a high priority user is on the satellite communication channel, then denying the requestor access to the satellite communication channel, else, determining if the maximum number of users are on the satellite communication channel; and

if the maximum number of users are on the satellite communication channel, then denying the requestor access to the satellite communication channel, else, granting the requestor access to the satellite communication channel, wherein the access to the satellite communication channel is shared among the requestor and lower priority users, and assigning a data slot to the requestor

wherein the step of assigning a data slot to the requestor comprises the steps of;

determining if the requestor has a high priority,

if the requestor has a high priority, then determining if another high priority user is currently on the satellite communication channel,

if another high priority user is currently on the satellite communication channel, then assigning a first data slot size to the requestor, else, assigning a second data slot size to the requestor,

if the requestor does not have a high priority, then determining if a low number of users are currently on the satellite communication channel,

if a low number of users are currently on the satellite communication channel, then assigning the second data slot size to the requestor, else, determining if the data to be transmitted by the requestor requires low-bandwidth, and

if the data to be transmitted by the requestor does not require low-bandwidth, then assigning the second data slot size to the requestor, else, assigning the first data slot size to the requestor, wherein the first data slot size is less than the second data slot size; and

monitoring access to the satellite communication channel based on the priority of the requestor and the number of users on the satellite communication channel.

13. The method for controlling multi-user TCP/IP access of claim 12 further comprising the step of dynamically adjusting the data slot size based upon one or more additional requesters accessing the satellite communication channel, the priority of the additional requestors accessing the satellite communication channel, and the data type to be transmitted by the additional requestors on the satellite communication channel.

14. The method for controlling multi-user TCP/IP access of claim 12, wherein the step of monitoring access to the satellite communication channel comprises the steps of:

determining if a new user is on the satellite communication channel;

if a new user is not on the satellite communication channel, maintaining the current user level of access to the satellite communication channel;

if a new user is on the satellite communication channel, determining if the new user has a high priority; and

if the new user does not have a high priority, then dividing the level of access to the satellite communication channel among the users of the satellite communication channel, wherein each user shares the same level of access to the satellite communication channel, else, pausing the access of lower priority users to the satellite communication channel.

15. The method for controlling multi-user TCP/IP access of claim 14 further comprising the steps of:

determining if another high priority user is on the satellite communication channel;

if another high priority user is on the satellite communication channel, then granting the new user shared access to the satellite communication channel with the high priority users on the satellite communication channel; and

if another high priority user is not on the satellite communication channel, then granting the new user exclusive access to the satellite communication channel.

16. The method for controlling multi-user TCP/IP access of claim 15 further comprising the steps of:

determining if a termination request has been received from a high priority user;

if a termination request has been received from a high priority user, then terminating the access of the high priority user to the satellite communication channel and resuming access of the lower priority users to the satellite communication channel without loss of information; and

if a termination request has not been received from a high priority user, then maintaining the current level of access to the users of the satellite communication channel.

17. A method for controlling multi-user TCP/IP access comprising the steps of:

receiving at least one request from at least one requestor for TCP/IP data transmission over a half-duplex, low-bandwidth, ultra-high frequency satellite communication channel using a TDMA controller;

determining whether the at least one request for TCP/IP data transmission has collided with a separate request for TCP/IP data transmission;

if the at least one request for TCP/IP data transmission has collided with a separate request for TCP/IP data transmission, then accepting the at least one request for TCP/IP data transmission, else, temporarily denying access to the satellite communication channel;

determining if the requestor has a high priority;

if the requestor has a high priority, then determining if another high priority user is on the satellite communication channel;

if another high priority user is on the satellite communication channel, then granting the requestor access to the satellite communication channel, wherein the access to the satellite communication channel is shared among the requestor and the another high priority user, and assigning a data slot to the requestor;

if another high priority user is not on the satellite communication channel, then granting the requestor exclusive access to the satellite communications channel;

if the requestor does not have a high priority, then determining if a high priority user is on the satellite communication channel;

if a high priority user is on the satellite communication channel, then denying the requestor access to the satellite communication channel, else, determining if the maximum number of users are on the satellite communication channel;

if the maximum number of users are on the satellite communication channel, then denying the requestor access to the satellite communication channel, else, granting the requestor access to the satellite communication channel, wherein the access to the satellite communication channel is shared among the requestor and lower priority users, and assigning a data slot to the requestor; and

monitoring access to the satellite communication channel based on the priority of the requestor and the number of users on the satellite communication channel

wherein the step of assigning a data slot to the requestor comprises the steps of;

determining if the requestor has a high priority,

if the requestor has a high priority, then determining if another high priority user is currently on the satellite communication channel,

if another high priority user is currently on the satellite communication channel, then assigning a first data slot size to the requestor, else, assigning a second data slot size to the requestor,

if the requestor does not have a high priority, then determining if a low number of users are currently on the satellite communication channel,

if a low number of users are currently on the satellite communication channel, then assigning the second data slot size to the requestor, else, determining if the data to be transmitted by the requestor requires low-bandwidth, and

if the data to be transmitted by the requestor does not require low-bandwidth, then assigning the second data slot size to the requestor, else, assigning the first data slot size to the requestor, wherein the first data slot size is less than the second data slot size.

18. The method for controlling multi-user TCP/IP access of claim 17 further comprising the step of dynamically adjusting the data slot size based upon one or more additional requesters accessing the satellite communication channel, the priority of the additional requestors accessing the satellite communication channel, and the data type to be transmitted by the additional requestors on the satellite communication channel.