ALLOCATING RESOURCE UNITS TO A MOBILE STATION

• US 20110249644A1
• Filed: 09/22/2009
• Published: 10/13/2011
• Est. Priority Date: 10/28/2008
• Status: Active Grant

• Current Assignee: RPX Corporation
• Original Assignee: Nokia Solutions and Networks US LLC (Nokia Corporation)
• Inventors: Boariu, Adrian, Zheng, Haihong, Maheshwari, Shashikant
• Granted Patent: US 8,737,326 B2
• Time in Patent Office: Days
• US Class Current: 370/329
• CPC Class Codes: H04W 72/23 in the downlink direction of a wireless link, i.e. towards a terminal

Abstract

Various example embodiments are disclosed. According to one example, a method may include permuting, by a superordinate station in a wireless network, physical resource units to logical resource units, the physical resource units of sequential logical resource units being noncontiguous. The method may also include sending at least one allocation message allocating a block of sequential logical resource units to each of a plurality of mobile stations, each of the allocated blocks being contiguous with at least one other allocated block. The method may also include de-allocating at least a first block of sequential logical resource units from a first mobile station selected from the plurality of mobile stations and a second block of sequential logical resource units from a second mobile station selected from the plurality of mobile stations, the first block of sequential logical resource units being noncontiguous with the second block of logical resource units. The method may also include sending at least one re-allocation message allocating the first block of sequential logical resource units and at least a portion of the second block of logical resource units to a new mobile station.

Claims

1. A method comprising:

permuting, by a superordinate station in a wireless network, physical resource units to logical resource units, the physical resource units of sequential logical resource units being noncontiguous;

sending at least one allocation message allocating a block of sequential logical resource units to each of a plurality of mobile stations, each of the allocated blocks being contiguous with at least one other allocated block;

de-allocating at least a first block of sequential logical resource units from a first mobile station selected from the plurality of mobile stations and a second block of sequential logical resource units from a second mobile station selected from the plurality of mobile stations, the first block of sequential logical resource units being noncontiguous with the second block of logical resource units; and

sending at least one re-allocation message allocating the first block of sequential logical resource units and at least a portion of the second block of logical resource units to a new mobile station.

2. The method of claim 1, wherein the physical resource units permuted to the first block of sequential logical resource units and the second block of sequential logical resource units are included in a single carrier.

3. The method of claim 1, further comprising:

determining a modulation and coding scheme for each of the plurality of mobile stations and the new mobile station based at least in part on a channel quality associated with the respective mobile station,

wherein the sending the at least one allocation message allocating the block of sequential logical resource units to each of the plurality of mobile stations includes allocating a number of logical resource units to each of the plurality of mobile stations based at least in part on the determined modulation and coding scheme, and

wherein the sending the at least one re-allocation message allocating the logical resource units to the new mobile station includes allocating a number of logical resource units to the new mobile station based at least in part on the determined modulation and coding scheme.

4. The method of claim 1, wherein:

the sending the at least one re-allocation message allocating the first block of sequential logical resource units and at least the portion of the second block of logical resource units to the new mobile station includes sending a MAP information element to the new mobile station, the MAP information element including a MAP indicating the logical resource units allocated to the new mobile station.

5. The method of claim 1, wherein:

the sending the at least one allocation message allocating the block of sequential logical resource units to each of the plurality of mobile stations is performed in response to the plurality of mobile stations entering a cell served by the superordinate station;

the de-allocating at least the first block of sequential logical resource units from the first mobile station selected from the plurality of mobile stations and the second block of sequential logical resource units from the second mobile station selected from the plurality of mobile stations is performed in response to the first mobile station and the second mobile station exiting the cell served by the superordinate station; and

the sending the at least one re-allocation message allocating the first block of sequential logical resource units and at least the portion of the second block of logical resource units to the new mobile station is performed in response to the new mobile station entering the cell served by the superordinate station.

6. The method of claim 1, wherein:

the sending the at least one allocation message allocating the block of sequential logical resource units to each of the plurality of mobile stations includes persistently or semi-persistently scheduling data transmission for each of the plurality of mobile stations; and

the sending the at least one re-allocation message allocating the first block of sequential logical resource units and at least the portion of the second block of logical resource units to the new mobile station includes persistently or semi-persistently scheduling data transmission for the new mobile station.

7. The method of claim 1, wherein the superordinate station includes an IEEE 802.16 Worldwide Interoperability for Microwave Access (WiMAX) base station.

8. The method of claim 1, wherein the superordinate station includes an IEEE 802.16 Worldwide Interoperability for Microwave Access (WiMAX) relay station.

9. The method of claim 1, wherein the superordinate station includes a Third Generation Partnership Project (3GPP) Long-Term Evolution (LTE) base station.

10. The method of claim 1, wherein each of the physical resource units includes a number of orthogonal frequency division multiple access (OFDMA) symbols in a time domain and a number of subcarriers in a frequency domain.

11. The method of claim 1, wherein each of the physical resource units includes a resource block including twelve subcarriers during seven orthogonal frequency division multiplexing (OFDM) symbols.

12. A method comprising:

receiving, by a mobile station in a wireless network, a resource re-allocation message from a superordinate node, the resource re-allocation message allocating at least two noncontiguous blocks of logical resource units to the mobile station, each of the logical resource units being associated with a physical resource unit by a permutation; and

sending data to or receiving data from the superordinate node via the physical resource units associated with the allocated logical resource units.

13. The method of claim 12, wherein physical resource units associated with the at least two allocated noncontiguous blocks of logical resource units are included in a single carrier.

14. The method of claim 12, wherein the sending data to or receiving data from the superordinate node includes sending data to the superordinate node via the physical resource units associated with the allocated logical resource units.

15. The method of claim 12, wherein the sending data to or receiving data from the superordinate node includes receiving data from the superordinate node via the physical resource units associated with the allocated logical resource units.

16. The method of claim 12, wherein the mobile station includes an IEEE 802.16 Worldwide Interoperability for Microwave Access (WiMAX) mobile station.

17. The method of claim 12, wherein the mobile station includes a Third Generation Partnership Project (3GPP) Long-Term Evolution (LTE) mobile station.

18. The method of claim 12, wherein each of the physical resource units includes a number of orthogonal frequency division multiple access (OFDMA) symbols in a time domain and a number of subcarriers in a frequency domain.

19. The method of claim 12, wherein each physical resource unit includes a resource block including twelve subcarriers during seven orthogonal frequency division multiplexing (OFDM) symbols.

20. An apparatus comprising:

a processor configured to;

permute physical resource units to logical resource units, the physical resource units of sequential logical resource units being noncontiguous;

generate at least one allocation message allocating a block of sequential logical resource units to each of the plurality of mobile stations, each of the allocated blocks being contiguous with at least one other allocated block;

de-allocating at least a first block of sequential logical resource units from a first mobile station selected from the plurality of mobile stations and a second block of sequential logical resource units from a second mobile station selected from the plurality of mobile stations, the first block of sequential logical resource units being noncontiguous with the second block of logical resource units; and

generate at least one re-allocation message allocating the first block of sequential logical resource units and at least a portion of the second block of logical resource units to a new mobile station.

21-61. -61. (canceled)