Allocating resource units to a mobile station

• US 8,737,326 B2
• Filed: 09/22/2009
• Issued: 05/27/2014
• Est. Priority Date: 10/28/2008
• Status: Expired due to Fees

• Current Assignee: RPX Corporation
• Original Assignee: Nokia Solutions and Networks US LLC (Nokia Corporation)
• Inventors: Boariu, Adrian, Maheshwari, Shashikant, Zheng, Haihong
• Primary Examiner(s): Sheikh, Ayaz
• Assistant Examiner(s): ASEFA, DEBEBE A
• Application Number:
  US13/124,321
• Publication Number:
  US 20110249644A1
• Time in Patent Office: 1,708 Days
• Field of Search: 370253-340, 709201-213
• 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;

in response to a plurality of mobile stations entering a cell served by the superordinate station, sending 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;

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

in response to a new mobile station entering the cell served by the superordinate station, 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 the 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.

6. The method of claim 1, wherein the superordinate station includes at least one of an IEEE 802.16 Worldwide Interoperability for Microwave Access (WiMAX) base station, an IEEE 802.16 WiMAX relay station, or a 3GPP LTE base station.

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

5. 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, including persistently or semi-persistently scheduling data transmission for each of the plurality of mobile stations;

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, including persistently or semi-persistently scheduling data transmission for the new mobile station,

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.

11. The method of claim 5, 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.

12. The method of claim 5, 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.

13. The method of claim 5, 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.

8. 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;

in response to a plurality of mobile stations entering a cell served by the apparatus, 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;

in response to a first mobile station selected from the plurality of mobile stations exiting the cell served by the apparatus and a second mobile station selected from the plurality of mobile stations exiting the cell served by the apparatus, de-allocating at least a first block of sequential logical resource units from the first mobile station and a second block of sequential logical resource units from the second mobile station, the first block of sequential logical resource units being noncontiguous with the second block of logical resource units; and

in response to a new mobile station entering the cell served by the apparatus, 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 the new mobile station,

wherein;

the generating 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 generating 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 and generating 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.

9. The apparatus of claim 8, 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.

10. The apparatus of claim 8, 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 generating 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 generating 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.