APPARATUS AND METHOD FOR DYNAMIC CHANNEL ALLOCATION IN MULTIPLE CHANNEL WIRELESS COMMUNICATION SYSTEM

• US 20080170545A1
• Filed: 01/14/2008
• Published: 07/17/2008
• Est. Priority Date: 01/12/2007
• Status: Active Grant

• Current Assignee: Samsung Electronics Co. Ltd.
• Original Assignee: Samsung Electronics Co. Ltd.
• Inventors: Jang, Jae-Hyuk, Cho, Min-Hee, KIM, Nam-Gi, Park, Jeong-Ho, Cho, Jae-Hee, Son, Jung-Je
• Granted Patent: US 8,310,997 B2
• Time in Patent Office: Days
• US Class Current: 370/329
• CPC Class Codes: H04W 72/20 Control channels or signalling for resource management

Abstract

An apparatus and method for dynamic channel allocation in a multiple channel wireless communication system are provided. The apparatus includes a scheduler for dividing resources to be used for a band Adaptive Modulation and Coding (AMC) channel and a diversity channel, a generator for generating a MAP heading field including physical distribution information on the band AMC channel and the diversity channel, and a mapper for mapping the MAP heading field to a predetermined physical resource region.

Claims

1. A base station apparatus in a broadband wireless communication system supporting multiple channels, the apparatus comprising:

a scheduler for dividing resources to be used for a band Adaptive Modulation and Coding (AMC) channel and a diversity channel;

a generator for generating a MAP heading field including physical distribution information on the band AMC channel and the diversity channel; and

a mapper for mapping the MAP heading field to a predetermined physical resource region.

2. The base station apparatus of claim 1, wherein the MAP heading field comprises bit map information representing an array of bit values corresponding to the respective channels according to a physical frequency band sequence.

3. The base station apparatus of claim 1, wherein the diversity channel is divided into a first diversity channel for a Multiple Input Multiple Output (MIMO) terminal and a Single Input Single Output (SISO) terminal and a second diversity channel for only the SISO terminal.

4. The base station apparatus of claim 3, wherein the scheduler designates address values for the band AMC channel, the first diversity channel, and the second diversity channel in a tile unit and allocates resources using the address values.

5. The base station apparatus of claim 4, wherein the scheduler designates sequential address values for the first diversity channel and the second diversity channel.

6. The base station apparatus of claim 3, wherein the scheduler selects resources to be used for the band AMC channel within a predetermined time interval, collects resources that are not selected for the band AMC channel within the time interval to configure a logical virtual channel, and then allocates resources to terminals using the first diversity channel within the logical virtual channel.

7. The base station apparatus of claim 1, further comprising:

a modulator for modulating frequency domain signals into an Orthogonal Frequency Division Multiplexing (OFDM) symbol by an Inverse Fast Fourier Transform (IFFT) operation;

a converter for converting a digital signal from the modulator into an analog signal; and

a transmitter for converting a base band signal from the converter into a Radio Frequency (RF) band signal for transmission.

8. A terminal apparatus in a broadband wireless communication system supporting multiple channels, the apparatus comprising:

an extractor for extracting a MAP heading field from a predetermined resource region; and

an identifying unit for identifying a physical distribution of a band AMC channel and a diversity channel through the MAP heading field.

9. The terminal apparatus of claim 8, wherein the MAP heading field includes bit map information representing an array of bit values corresponding to the respective channels according to a physical frequency band sequence.

10. The terminal apparatus of claim 8, wherein the diversity channel is divided into a first diversity channel for an MIMO terminal and an SISO terminal and a second diversity channel for only the SISO terminal.

11. The terminal apparatus of claim 10, wherein the extractor extracts a MAP message mapped to the predetermined resource region within the first diversity channel and the identifying unit identifies a tile unit address value allocated thereto by analyzing the MAP message.

12. The terminal apparatus of claim 11, wherein the extractor designates address values for each channel in a tile unit and extracts a signal mapped to resources corresponding to the address value that is identified through the MAP message and allocated thereto.

13. The terminal apparatus of claim 12, wherein the extractor designates sequential address values for the first diversity channel and the second diversity channel.

14. An operation method of a base station in a broadband wireless communication system supporting multiple channels, the method comprising:

dividing resources to be used for a band AMC channel and a diversity channel;

generating a MAP heading field including physical distribution information on the band AMC channel and the diversity channel; and

mapping the MAP heading field to a predetermined physical resource region.

15. The operation method of claim 14, wherein the MAP heading field includes bit map information representing an array of bit values corresponding to the respective channels according to a physical frequency band sequence.

16. The operation method of claim 14, wherein the diversity channel is divided into a first diversity channel for an MIMO terminal and an SISO terminal and a second diversity channel for only the SISO terminal.

17. The operation method of claim 16, further comprising designating an address value in a tile unit for the band AMC channel, the first diversity channel, and the second diversity channel and allocating resources using the address value.

18. The operation method of claim 17, wherein the address values of the first diversity channel and the second diversity channel are sequential.

19. The operation method of claim 17, wherein allocating the resources comprises:

selecting resources to be used as the band AMC channel within a set time interval;

collecting resources which are not selected as the band AMC channel within the time interval, to configure a logical virtual channel; and

allocating resources to terminals using the first diversity channel within the logical virtual channel.

20. An operation method of a terminal in a broadband wireless communication system supporting multiple channels, comprising:

extracting a MAP heading field from a predetermined resource region; and

identifying a physical distribution of a band AMC channel and of a diversity channel through the MAP heading field.

21. The operation method of claim 20, wherein the MAP heading field includes bit map information representing an array of bit values corresponding to the respective channels according to a physical frequency band sequence.

22. The operation method of claim 20, wherein the diversity channel is divided into a first diversity channel for an MIMO terminal and an SISO terminal and a second diversity channel for only the SISO terminal.

23. The operation method of claim 22, further comprising:

extracting a MAP message mapped to the resource region within the first diversity channel; and

identifying a tile unit address value allocated to itself by analyzing the MAP message.

24. The operation method of claim 23, further comprising:

designating an address value for each channel in a tile unit, and extracting a signal mapped to resources corresponding to the address value which is identified through the MAP message and allocated thereto.

25. The operation method of claim 24, wherein the address values of the first diversity channel and the second diversity channel are sequential.