METHOD AND APPARATUS FOR TRIGGERING BUFFER STATUS REPORTS WITH PACKET DISCARDING

• US 20100271990A1
• Filed: 03/12/2010
• Published: 10/28/2010
• Est. Priority Date: 04/24/2009
• Status: Abandoned Application

• Current Assignee: Motorola Mobility LLC (Lenovo Group Ltd.)
• Original Assignee: Motorola, Inc. (Motorola Solutions, Inc.)
• Inventors: Vukovic, Ivan N., Harris, John M., Leelahakriengkrai, Rangsan, Filipovich, Igor
• Application Number:
  US12/722,598
• Publication Number:
  US 20100271990A1
• Time in Patent Office: Days
• US Class Current: 370/310
• CPC Class Codes: H04L 47/10 Flow control; Congestion control
• CPC Class Codes: H04L 47/12 Avoiding congestion; Recovering from congestion
• CPC Class Codes: H04L 47/28 in relation to timing considerations
• CPC Class Codes: H04L 47/30 in combination with information about buffer occupancy at either end or at transit nodes
• CPC Class Codes: H04L 47/32 by discarding or delaying data units, e.g. packets or frames
• CPC Class Codes: H04W 28/0278 using buffer status reports dynamic wireless traffic scheduling definition H04W72/12
• CPC Class Codes: H04W 28/12 using signalling between network elements
• CPC Class Codes: H04W 8/04 Registration at HLR or HSS [Home Subscriber Server]
• CPC Class Codes: H04W 8/24 Transfer of terminal data

Abstract

A method and apparatus are disclosed that includes a user equipment (104) sending a first buffer status report to an eNode B (102) to (210) indicate an amount of data in a buffer that is to be sent. After the first buffer status report is sent, the amount of data in the buffer can change (216) so that the user equipment sends (218) a second buffer status report to indicate the change in the amount of data in the buffer that is to be sent.

Claims

1. A method comprising:

sending a first buffer status report to indicate an amount of data in a buffer that is to be sent;

discarding data from the buffer, and

sending a second buffer status report to indicate the change in the amount of data in the buffer as a result of discarding data.

2. The method of claim 1 wherein the first buffer status report includes an amount of data in the buffer.

3. The method of claim 1 further comprising receiving a grant to send at least a portion of the data in the buffer.

4. The method of claim 3 wherein sending the second buffer status report further comprises using a portion grant to send the second buffer status report.

5. The method of claim 3 further comprising sending data from the buffer according to the received grant.

6. The method of claim 1 wherein discarding data further comprising discarding data from the buffer according one of an expiration of a timer, a trigger of a buffer overflow method, a detection of malicious data.

7. The method of claim 1 further comprising receiving a grant to send the first buffer status report.

8. A method comprising:

sending a first buffer status report to indicate an amount of data in a buffer that is to be sent;

changing the amount of data in the buffer;

sending a second buffer status report to indicate the change in the amount of data in the buffer that is to be sent.

9. The method of claim 8 wherein changing the amount of data in the buffer comprises discarding data from the buffer since the first buffer report was sent.

10. The method of claim 9 wherein discarding data further comprising discarding data from the buffer according one of an expiration of a timer, a trigger of a buffer overflow method, a detection of malicious data.

11. The method of claim 8 wherein changing the amount of data in the buffer comprises increasing data to the buffer since the first buffer report was sent.

12. The method of claim 8 further comprising receiving a grant to send at least a portion of the data in the buffer.

13. The method of claim 12 wherein sending the second buffer status report further comprising using a portion of the grant to send the second buffer status report.

14. An apparatus comprising:

a buffer to store data to be sent from the apparatus;

a transceiver to send the stored data, and

a processor coupled to the buffer and the transceiver wherein the processor creates a first buffer status report to indicate an amount of data stored in the buffer to be sent by the transceiver and wherein the processor creates a second buffer status report when the amount of data in the buffer changes after the first buffer status report is sent by the transceiver.

15. The apparatus of claim 14 wherein the transceiver sends the first buffer status report after receiving a grant that indicates at least a portion of the data in the buffer to be sent by the transceiver.

16. The apparatus of claim 15 wherein the transceiver sends the portion of data in the buffer indicated in the grant.

17. The apparatus of claim 14 wherein the amount of data in the buffer changes after data is discarded from the buffer.

18. The apparatus of claim 17 wherein the data is discarded at the expiration of a timer.

19. The apparatus of claim 14 wherein the amount of data in the buffer changes by increasing the data in the buffer.

20. The apparatus of claim 14 wherein the transceiver receives and indication to send the first buffer status report.