DYNAMIC RESOURCE ALLOCATION, SCHEDULING AND SIGNALING FOR VARIABLE DATA RATE SERVICE IN LTE

• US 20180020465A1
• Filed: 08/16/2017
• Published: 01/18/2018
• Est. Priority Date: 08/21/2006
• Status: Active Grant

• Current Assignee: Interdigital Technology Corporation (InterDigital, Inc.)
• Original Assignee: Interdigital Technology Corporation (InterDigital, Inc.)
• Inventors: Chandra, Arty, Sammour, Mohammed, Wang, Jin
• Granted Patent: US 10,548,159 B2
• Time in Patent Office: Days
• CPC Class Codes: H04B 1/713 using frequency hopping
• CPC Class Codes: H04L 1/18 Automatic repetition systems, e.g. Van Duuren systems
• CPC Class Codes: H04L 1/1822 involving configuration of automatic repeat request [ARQ] with parallel processes
• CPC Class Codes: H04L 1/1896 ARQ related signaling
• CPC Class Codes: H04L 47/15 in relation to multipoint traffic arrangements for broadcast or multicast in data networks H04L12/18
• CPC Class Codes: H04L 47/70 Admission control; Resource allocation
• CPC Class Codes: H04L 47/762 triggered by the network
• CPC Class Codes: H04L 47/824 Applicable to portable or mobile terminals
• 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: H04L 5/0064 Rate requirement of the data, e.g. scalable bandwidth, data priority
• CPC Class Codes: H04L 5/0094 Indication of how sub-channels of the path are allocated
• CPC Class Codes: H04L 5/0096 Indication of changes in allocation
• CPC Class Codes: H04W 72/0446 Resources in time domain, e.g. slots or frames
• CPC Class Codes: H04W 72/543 based on requested quality, e.g. QoS

Abstract

A method and apparatus are provided for dynamic resource allocation, scheduling and signaling for variable data real time services (RTS) in long term evolution (LTE) systems. Preferably, changes in data rate for uplink RTS traffic are reported to an evolved Node B (eNB) by a UE using layer 1, 2 or 3 signaling. The eNB dynamically allocates physical resources in response to a change in data rate by adding or removing radio blocks currently assigned to the data flow, and the eNB signals the new resource assignment to the UE. In an alternate embodiment, tables stored at the eNB and the UE describe mappings of RTS data rates to physical resources under certain channel conditions, such that the UE uses the table to locally assign physical resources according to changes in UL data rates. Additionally, a method and apparatus for high level configuration of RTS data flows is also presented.

Claims

1. A wireless transmit/receive unit (WTRU) comprising:

a receiver configured to receive layer 3 (L3) control information including an allocation of resources for data transmission by the WTRU, wherein the L3 control information indicates at least a frequency domain resource allocation, periodicity information, and repetition information; and

a transmitter configured to transmit uplink data according to the L3 control information.

2. The WTRU of claim 1, wherein the L3 control information is radio resource control (RRC) control information.

3. The WTRU of claim 1, wherein the allocation of resources is signaled through L3 signaling only.

4. The WTRU of claim 1, wherein the L3 control information further indicates a time domain resource allocation.

5. The WTRU of claim 1, wherein the L3 control information further indicates a sequence pattern.

6. The WTRU of claim 1, wherein the L3 control information further indicates a frequency hopping pattern.

7. The WTRU of claim 1, wherein the L3 control information further indicates at least a number of resource blocks assigned to the WTRU.

8. The WTRU of claim 7, wherein the number of resource blocks indicates a number of sub-bands assigned to the WTRU.

9. The WTRU of claim 1, wherein the allocation of resources further indicates a modulation and coding scheme (MCS).

10. The WTRU of claim 1, wherein the L3 control information is received in an orthogonal frequency division multiple access (OFDMA) format.

11. A method performed by a wireless transmit/receive unit (WTRU), the method comprising:

receiving layer 3 (L3) control information including a allocation of resources for data transmission by the WTRU, wherein the L3 control information indicates at least a frequency domain resource allocation, periodicity information, and repetition information; and

transmitting uplink data according to the L3 control information.

12. The method of claim 11, wherein the L3 control information is radio resource control (RRC) control information.

13. The method of claim 11, wherein the allocation of resources is signaled through L3 signaling only.

14. The method of claim 11, wherein the L3 control information further indicates a time domain resource allocation.

15. The method of claim 11, wherein the L3 control information further indicates a sequence pattern.

16. The method of claim 11, wherein the L3 control information further indicates a frequency hopping pattern.

17. The method of claim 11, wherein the L3 control information further indicates at least a number of resource blocks assigned to the WTRU.

18. The method of claim 17, wherein the number of resource blocks indicates a number of sub-bands assigned to the WTRU.

19. The method of claim 11, wherein the allocation of resources further indicates a modulation and coding scheme (MCS).

20. The method of claim 11, wherein the L3 control information is received in an orthogonal frequency division multiple access (OFDMA) format.