AVOIDING COLLISIONS BETWEEN SEMI-PERSISTENT ALLOCATION AND DYNAMIC ALLOCATION IN RADIO ACCESS NETWORKS

• US 20100182965A1
• Filed: 06/19/2008
• Published: 07/22/2010
• 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
• Granted Patent: US 9,094,984 B2
• Time in Patent Office: Days
• US Class Current: 370/329
• 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 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.

2. The method of claim 1, wherein a load in the communication network is sufficiently high that retransmission cannot be scheduled.

3. An apparatus, comprising:

a receiving unit configured to receive a request for retransmission from user equipment for a predetermined transmission time interval in a communication network;

a determining unit configured to determine whether a collision risk exists between the retransmission and another transmission during the predetermined time interval; and

an ignoring unit configured to ignore the retransmission request when the determining unit determines that the collision risk exists.

4. The apparatus of claim 3, wherein a load in the communication network is sufficiently high that the apparatus cannot schedule retransmission.

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

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

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.

7. The computer program of claim 6, wherein a load in the communication network is sufficiently high that retransmission cannot be scheduled.

8. An apparatus, comprising:

receiving means for receiving a request for retransmission from user equipment for a predetermined transmission time interval in a communication network;

determining means for determining whether a collision risk exists between the retransmission and another transmission during the predetermined time interval; and

ignoring means for ignoring the retransmission request when the determined collision risk exists.

9. A method, comprising:

determining that a transmission from user equipment was unsuccessful;

determining whether a retransmission will collide with a predefined resource for a predetermined transmission time interval; and

transmitting an acknowledgement to the user equipment, rather than requesting retransmission, when it is determined that the retransmission will collide with the predefined resource.

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 configure to determine that a transmission from user equipment was unsuccessful;

a second determining unit configured to determine whether a retransmission will collide with a predefined resource for a predetermined transmission time interval; and

a transmitting unit configured to transmit an acknowledgement to the user equipment, rather than a request for retransmission, when the second determining unit determines that the retransmission will collide with the predefined resource.

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 embodied on a computer-readable medium, the program controlling a processor to perform a process, the process comprising:

determining that a transmission from user equipment was unsuccessful;

determining whether a retransmission will collide with a predefined resource for a predetermined transmission time interval; and

transmitting an acknowledgement to the user equipment, rather than requesting retransmission, when it is determined that the retransmission will collide with the predefined resource.

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

19. An apparatus, comprising:

first determining means for determining that a transmission from user equipment was unsuccessful;

second determining means for determining whether a retransmission will collide with a predefined resource for a predetermined transmission time interval; and

transmitting means for transmitting an acknowledgement to the user equipment, rather than requesting retransmission, when it is determined that the retransmission will collide with the predefined resource.

20. A method, comprising:

receiving a request for retransmission from a node;

determining that the request for retransmission collides with a predefined allocation;

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

transmitting 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 for retransmission from a node;

a determining unit configured to determine that the request for retransmission collides with a predefined allocation;

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

a transmitting unit configured to transmit 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 embodied on a computer-readable medium, the program controlling a processor to perform a process, the process comprising:

receiving a request for retransmission from a node;

determining that the request for retransmission collides with a predefined allocation;

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

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

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

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

30. An apparatus, comprising:

receiving means for receiving a request for retransmission from a node;

determining means for determining that the request for retransmission collides with a predefined allocation;

prioritizing means for prioritizing a first transmission on the predefined allocation and the retransmission in accordance with a prioritization rule; and

transmitting means for transmitting either the first transmission or the retransmission depending on the prioritization rule.