USER EQUIPMENT AND METHOD FOR SEMI-PERSISTENT SCHEDULING

• US 20140036843A1
• Filed: 10/14/2013
• Published: 02/06/2014
• Est. Priority Date: 04/04/2008
• Status: Active Grant

• Current Assignee: Apple Inc.
• Original Assignee: Intel Corporation
• Inventors: Mohanty, Shantidev, Vannithamby, Rath, Etemad, Kamran, Srinivasan, Roshni M.
• Granted Patent: US 9,749,995 B2
• Time in Patent Office: Days
• US Class Current: 370/329
• CPC Class Codes: H04L 1/0003 by switching between different modulation schemes
• CPC Class Codes: H04L 1/0009 by adapting the channel coding H04L1/1812 takes precedence
• CPC Class Codes: H04L 1/0025 Transmission of mode-switching indication
• CPC Class Codes: H04L 1/1861 Physical mapping arrangements for ACK signaling see also H04L5/0053
• CPC Class Codes: H04L 1/1864 ARQ related signaling H04L1/1607 takes precedence
• CPC Class Codes: H04L 5/0007 the frequencies being orthogonal, e.g. OFDM(A), DMT
• CPC Class Codes: H04L 5/003 Arrangements for allocating sub-channels of the transmission path
• CPC Class Codes: H04W 72/0446 Resources in time domain, e.g. slots or frames
• CPC Class Codes: H04W 72/12 Wireless traffic scheduling
• CPC Class Codes: H04W 72/20 Control channels or signalling for resource management

Abstract

The various inventive embodiments relate to arrangement of information elements (IEs) for persistent and/or dynamic allocations in a wireless broadband network and include optimization techniques to eliminate the repetitive information fields from the downlink (DL)-Persistent-IEs, uplink (UL)-Persistent-IEs, DL-IEs, and UL-IEs. Elimination of repetitive information fields reduces MAP overhead. In addition embodiments relate to methods to use the same hybrid automatic repeat request (HARQ) region to contain persistent as well as non-persistent allocations. The use of the same HARQ region for persistent as well as non-persistent allocations further reduces the MAP overhead as it requires a single header to define the HARQ region instead of the two headers that are required to define two different HARQ regions: one for persistent allocation and the second one for non-persistent allocations.

Claims

1. A method for resource allocation in a cellular network, the method comprising:

receiving signaling on a control channel to indicate that an uplink grant is configured semi-persistently;

determining a semi-persistent uplink scheduling interval from the signaling;

determining a subframe offset value based on a position of an initial semi-persistent grant;

determine subframes within which a semi-persistently grant occurs based on at least one of the semi-persistent uplink scheduling interval and the position of the initial semi-persistent grant; and

transmitting uplink data in physical resource blocks (PRBs) during at least some of the determined subframes without additional signaling on the control channel, the determined subframes being semi-persistently scheduled.

2. The method of claim 1 further comprising discarding a corresponding scheduled semi-persistent grant when semi-persistent scheduling is disabled by the signaling.

3. The method of claim 2 further comprising clearing a scheduled semi-persistent grant after an implicit release indicated by a number of empty data units.

4. The method of claim 2 wherein the subframes within which the semi-persistently grant occurs are determined based on both the semi-persistent uplink scheduling interval and the position of the initial semi-persistent grant.

5. The method of claim 2 further comprising receiving signaling for semi-persistent scheduling of hybrid automatic repeat request (HARQ) transmissions.

6. The method of claim 2 further comprising receiving signaling for dynamic scheduling of uplink grants when semi-persistent scheduling is enabled.

7. The method of claim 2 wherein the signaling comprises radio-resource control signaling that includes a semi-persistent scheduling configuration on a physical downlink control channel to indicate that semi-persistent scheduling is enabled.

8. The method of claim 1 wherein the signaling indicates whether a grant is persistent or not persistent.

9. The method of claim 1 wherein when the signaling indicates that an uplink grant is configured semi-persistently, a persistent resource block allocation is indicated.

10. The method of claim 1 wherein the signaling includes a hybrid automatic repeat request (HARQ) that contains persistent as well as non-persistent allocations.

11. The method of claim 1 wherein the method is performed by a wireless communication device in communication with a base station of a 3GPP LTE network.

12. A wireless communication device comprising:

radio-frequency interface circuitry arranged to receive signaling on a control channel to indicate that an uplink grant is configured semi-persistently;

processing circuitry to determine;

a semi-persistent uplink scheduling interval from the signaling;

a subframe offset value based on a position of an initial semi-persistent grant; and

subframes within which a semi-persistently grant occurs based on at least one of the semi-persistent uplink scheduling interval and the position of the initial semi-persistent grant,

wherein the radio-frequency interface circuitry is arranged to transmit uplink data in physical resource blocks (PRBs) during at least some of the determined subframes without additional signaling on the control channel, the determined subframes being semi-persistently scheduled.

13. The wireless communication device of claim 12 wherein the processing circuitry is further arranged to discard a corresponding scheduled semi-persistent grant when semi-persistent scheduling is disabled by the signaling.

14. The wireless communication device of claim 13 wherein the processing circuitry is further arranged to clear a scheduled semi-persistent grant after an implicit release indicated by a number of empty data units.

15. The wireless communication device of claim 13 wherein the subframes within which the semi-persistently grant occurs are determined based on both the semi-persistent uplink scheduling interval and the position of the initial semi-persistent grant.

16. The wireless communication device of claim 13 wherein the radio-frequency interface circuitry is further arranged to receive signaling for semi-persistent scheduling of hybrid automatic repeat request (HARQ) transmissions.

17. The wireless communication device of claim 13 wherein the radio-frequency interface circuitry is further arranged to receive signaling for dynamic scheduling of uplink grants when semi-persistent scheduling is enabled.

18. A wireless communication device comprising circuitry arranged to:

receive signaling on a control channel to indicate that semi-persistent scheduling is enabled;

receive signaling on the control channel for dynamic scheduling of uplink grants when semi-persistent scheduling is enabled;

determine a semi-persistent uplink scheduling interval from the signaling indicating that semi-persistent scheduling is enabled;

determine a subframe offset value based on a position of an initial semi-persistent grant;

determine subframes within which a semi-persistently grant occurs based on the semi-persistent uplink scheduling interval and the position of the initial semi-persistent grant; and

transmit uplink data during at least some of the determined subframes without additional signaling on the control channel, the determined subframes being semi-persistently scheduled.

19. The wireless communication device of claim 18 wherein the wireless communication device in communication with a base station of the 3GPP LTE network.