Avoiding collisions between semi-persistent allocation and dynamic allocation in radio access networks

• US 9,094,984 B2
• Filed: 06/19/2008
• Issued: 07/28/2015
• Est. Priority Date: 06/20/2007
• Status: Active Grant

• Current Assignee: Nokia Solutions and Networks US LLC (Nokia Corporation)
• Original Assignee: Nokia Solutions and Networks US LLC (Nokia Corporation)
• Inventors: Sebire, Benoist Pierre
• Primary Examiner(s): Sloms, Nicholas
• Application Number:
  US12/664,955
• Publication Number:
  US 20100182965A1
• Time in Patent Office: 2,595 Days
• Field of Search: 370328-403
• US Class Current: 1/1
• CPC Class Codes: H04L 1/1887 Scheduling and prioritising arrangements
• CPC Class Codes: H04W 72/569 of the traffic information
• CPC Class Codes: H04W 74/08 Non-scheduled access, e.g. ALOHA hybrid access H04W74/02
• CPC Class Codes: H04W 74/0841 with collision treatment

Abstract

A method, including receiving a request for retransmission from user equipment for a predetermined transmission time interval in a communication network; determining whether a collision risk exists between the retransmission and another transmission during the predetermined time interval; and ignoring the retransmission request when the determined collision risk exists.

Claims

1. A method comprising:

receiving a request from a user equipment for retransmission of an earlier transmission to the user equipment on a dynamic allocation for a predetermined transmission time interval in a communication network;

determining whether a collision risk exists between the retransmission of the earlier transmission to the user equipment and another transmission to the user equipment on a predefined allocation during the predetermined transmission time interval;

prioritizing said another transmission to the user equipment on the predefined allocation and the retransmission on the dynamic allocation in accordance with a prioritization rule; and

ignoring the retransmission request when the collision risk exists or performing the retransmission based on the prioritization rule.

2. The method of claim 1, wherein retransmission is not scheduled when the collision risk exists.

3. An apparatus comprising:

a receiving unit configured to receive a request from a user equipment for retransmission of an earlier transmission to the user equipment on a dynamic allocation for a predetermined transmission time interval in a communication network;

a determining unit configured to determine whether a collision risk exists between the retransmission of the earlier transmission to the user equipment and another transmission to the user equipment on a predefined allocation during the predetermined transmission time interval;

a prioritizing unit configured to prioritize said another transmission to the user equipment on the predefined allocation and the retransmission on the dynamic allocation in accordance with a prioritization rule; and

an ignoring unit configured to ignore the retransmission request when the determining unit determines that the collision risk exists or to perform the retransmission based on the prioritization rule.

4. The apparatus of claim 3, wherein the apparatus does not schedule retransmission when the collision risk exists.

5. The apparatus of claim 3, wherein the apparatus comprises an enhanced node B of the third generation partnership project.

6. A computer program product embodied on a non-transitory computer-readable storage medium, the computer program controlling a processor to perform a process, the process comprising:

receiving a request from a user equipment for retransmission of an earlier transmission to the user equipment on a dynamic allocation for a predetermined transmission time interval in a communication network;

determining whether a collision risk exists between the retransmission of the earlier transmission to the user equipment and another transmission to the user equipment on a predefined allocation during the predetermined transmission time interval;

prioritizing said another transmission to the user equipment on the predefined allocation and the retransmission on the dynamic allocation in accordance with a prioritization rule; and

ignoring the retransmission request when the collision risk exists or performing the retransmission based on the prioritization rule.

7. The computer program product of claim 6, wherein retransmission is not scheduled when the collision risk exists.

8. An apparatus comprising:

one or more processors; and

one or more memories including computer program code;

the one or more memories and the computer program code configured, with the one or more processors, to cause the apparatus to perform;

receiving a request from a user equipment for retransmission of an earlier transmission to the user equipment on a dynamic allocation for a predetermined transmission time interval in a communication network;

determining whether a collision risk exists between the retransmission of the earlier transmission to the user equipment and another transmission to the user equipment on a predefined allocation during the predetermined transmission time interval;

prioritizing said another transmission to the user equipment on the predefined allocation and the retransmission on the dynamic allocation in accordance with a prioritization rule; and

ignoring the retransmission request when the collision risk exists or performing the retransmission based on the prioritization rule.

9. A method comprising:

determining that a transmission from a user equipment was unsuccessful;

determining whether a retransmission of the transmission from the user equipment on a dynamic allocation will collide with a predefined allocation for the user equipment for a predetermined transmission time interval;

prioritizing said retransmission from the user equipment on the dynamic allocation and the predefined allocation for the user equipment for the predetermined transmission time interval in accordance with a prioritization rule; and

transmitting an acknowledgement to the user equipment, when it is determined that the retransmission will collide with the predefined allocation, or requesting retransmission based on the prioritization rule.

10. The method of claim 9, wherein collisions occur due to one or more of synchronous hybrid automatic repeat request and signaling errors in control signaling.

11. The method of claim 9, wherein first transmissions on the predefined allocation are prioritized over retransmissions.

12. An apparatus comprising:

a first determining unit configured to determine that a transmission from a user equipment was unsuccessful;

a second determining unit configured to determine whether a retransmission of the transmission from the user equipment on a dynamic allocation will collide with a predefined allocation for the user equipment for a predetermined transmission time interval;

a prioritizing unit configured to prioritize said retransmission from the user equipment on the dynamic allocation and the predefined allocation for the user equipment for the predetermined transmission time interval in accordance with a prioritization rule; and

a transmitting unit configured to transmit an acknowledgement to the user equipment;

when the second determining unit determines that the retransmission will collide with the predefined allocation, or to request retransmission based on the prioritization rule.

13. The apparatus of claim 12, wherein collisions occur due to one or more of synchronous hybrid automatic repeat request and signaling errors in control signaling.

14. The apparatus of claim 12, wherein first transmissions on the predefined allocation are prioritized over retransmissions.

15. The apparatus of claim 12, wherein the apparatus comprises an enhanced node B of the third generation partnership project.

16. A computer program product embodied on a non-transitory computer-readable storage medium, the computer program controlling a processor to perform a process, the process comprising:

determining that a transmission from a user equipment was unsuccessful;

determining whether a retransmission of the transmission from the user equipment on a dynamic allocation will collide with a predefined allocation for the user equipment for a predetermined transmission time interval;

prioritizing said retransmission from the user equipment on the dynamic allocation and the predefined allocation for the user equipment for the predetermined transmission time interval in accordance with a prioritization rule; and

transmitting an acknowledgement to the user equipment, when it is determined that the retransmission will collide with the predefined allocation, or requesting retransmission based on the prioritization rule.

17. The computer program product of claim 16, wherein collisions occur due to one or more of synchronous hybrid automatic repeat request and signaling errors in control signaling.

18. The computer program product of claim 16, wherein first transmissions on the predefined allocation are prioritized over retransmissions.

19. An apparatus comprising:

one or more processors; and

one or more memories including computer program code;

the one or more memories and the computer program code configured, with the one or more processors, to cause the apparatus to perform;

determining that a transmission from a user equipment was unsuccessful;

determining whether a retransmission of the transmission from the user equipment on a dynamic allocation will collide with a predefined allocation for the user equipment for a predetermined transmission time interval;

prioritizing said retransmission from the user equipment on the dynamic allocation and the predefined allocation for the user equipment for the predetermined transmission time interval in accordance with a prioritization rule; and

transmitting an acknowledgement to the user equipment, when it is determined that the retransmission will collide with the predefined allocation, or requesting retransmission based on the prioritization rule.

20. A method comprising:

receiving a request from a node for retransmission of an earlier transmission to the node on a dynamic allocation for a predetermined transmission time interval in a communication network;

determining whether the retransmission of the earlier transmission to the node collides with a predefined allocation for the node for the predetermined transmission time interval;

prioritizing a first transmission to the node on the predefined allocation and the retransmission on the dynamic allocation in accordance with a prioritization rule; and

transmitting to the node either the first transmission or the retransmission depending on the prioritization rule.

21. The method of claim 20, wherein the prioritization rule prioritizes first transmissions on the predefined allocation over retransmissions.

22. The method of claim 20, wherein the prioritization rule prioritizes retransmissions over first transmissions on the predefined allocation.

23. An apparatus comprising:

a receiving unit configured to receive a request from a node for retransmission of an earlier transmission to the node on a dynamic allocation for a predetermined transmission time interval in a communication network;

a determining unit configured to determine whether the retransmission of the earlier transmission to the node collides with a predefined allocation for the node for the predetermined transmission time interval;

a prioritizing unit configured to prioritize a first transmission to the node on the predefined allocation and the retransmission on the dynamic allocation in accordance with a prioritization rule; and

a transmitting unit configured to transmit to the node either the first transmission or the retransmission depending on the prioritization rule.

24. The apparatus of claim 23, wherein the prioritizing unit is configured to prioritize first transmissions on the predefined allocation over retransmissions.

25. The apparatus of claim 23, wherein the prioritizing unit is configured to prioritize retransmissions over first transmissions on the predefined allocation.

26. The apparatus of claim 23, wherein the apparatus comprises user equipment.

27. A computer program product embodied on a non-transitory computer-readable storage medium, the program controlling a processor to perform a process, the process comprising:

receiving a request from a node for retransmission of an earlier transmission to the node on a dynamic allocation for a predetermined transmission time interval in a communication network;

determining whether the retransmission of the earlier transmission to the node collides with a predefined allocation for the node for the predetermined transmission time interval;

prioritizing a first transmission to the node on the predefined allocation and the retransmission on the dynamic allocation in accordance with a prioritization rule; and

transmitting to the node either the first transmission or the retransmission depending on the prioritization rule.

28. The computer program product of claim 27, wherein the prioritization rule prioritizes first transmissions on the predefined allocation over retransmissions.

29. The computer program product of claim 27, wherein the prioritization rule prioritizes retransmissions over first transmissions on the predefined allocation.

30. An apparatus comprising:

one or more processors; and

one or more memories including computer program code;

the one or more memories and the computer program code configured, with the one or more processors, to cause the apparatus to perform;

receiving a request from a node for retransmission of an earlier transmission to the node on a dynamic allocation for a predetermined transmission time interval in a communication network;

determining whether the retransmission of the earlier transmission to the node collides with a predefined allocation for the node for the predetermined transmission time interval;

prioritizing a first transmission to the node on the predefined allocation and the retransmission on the dynamic allocation in accordance with a prioritization rule; and

transmitting to the node either the first transmission or the retransmission depending on the prioritization rule.