METHOD AND APPARATUS FOR ALLOCATING RADIO RESOURCE IN COMMUNICATION SYSTEM

• US 20090239546A1
• Filed: 07/06/2007
• Published: 09/24/2009
• Est. Priority Date: 07/07/2006
• Status: Active Grant

• Current Assignee: Electronics and Telecommunications Research Institute, Samsung Electronics Co. Ltd.
• Original Assignee: Electronics and Telecommunications Research Institute
• Inventors: Ahn, Jee-Hwan, Yoon, Chul-Sik, Lim, Kwang-Jae
• Granted Patent: US 8,135,039 B2
• Time in Patent Office: Days
• US Class Current: 455/450
• CPC Class Codes: H04B 7/26 at least one of which is mobile
• CPC Class Codes: H04W 28/06 Optimizing the usage of the radio link, e.g. header compression, information sizing , discarding information system modifying transmission characteristic according to link quality by modifying frame length H04L1/0007; dynamic adaptation of the packet size for flow control or congestion control H04L47/365
• CPC Class Codes: H04W 72/23 in the downlink direction of a wireless link, i.e. towards a terminal

Abstract

To transmit resource allocation information on a plurality of radio resources to a terminal, a resource allocation device expresses a radio resource that is differently allocated from before the resource allocation information is transmitted among the plurality of radio resources in a radio resource pattern sequence, generates resource allocation information on the plurality of radio resources based on the radio resource pattern sequence, and transmits the radio resource pattern sequence and the resource allocation information, or a compressed pattern sequence corresponding to the radio resource pattern sequence and the resource allocation information, to the terminal through a frame.

Claims

1. A method for transmitting resource allocation information on a plurality of radio resources to a terminal, the method comprising:

expressing, on a first pattern sequence, the radio resource, among the plurality of radio resources, that is allocated differently from before the resource allocation information is transmitted;

generating resource allocation information on the plurality of radio resources, the resource allocation information based on the first pattern sequence; and

transmitting a second pattern sequence corresponding to the first pattern sequence and the resource allocation information to the terminal.

2. The method of claim 1, wherein the second pattern sequence is the same as the first pattern sequence.

3. The method of claim 1, further comprising:

determining a compression unit length;

dividing the first pattern sequence into a plurality of compression units based on the compression unit length;

determining a compression possibility in compressing the plurality of compression units to express the compression possibility in a compression indicator sequence;

expressing a compressed sequence in a compressed pattern sequence when compression can be performed according to the compression possibility; and

expressing an original sequence in the compressed pattern sequence when the compression cannot be performed,

wherein the second pattern sequence includes the compression unit length, the compression indicator sequence, and the compressed pattern sequence.

4. The method of claim 3, wherein the determining of the compression unit length comprises determining the compression unit length as a length for minimizing a length of the compression pattern sequence among a predetermined number of lengths.

5. The method of claim 4, wherein the determining of the compression possibility comprises determining that the compression can be performed when the plurality of compression units respectively include the same pattern.

6. The method of claim 3, wherein the expressing of the compression pattern sequence comprises expressing the same pattern in the compressed pattern sequence when the compression can be performed.

7. The method of claim 1, wherein the resource allocation information on the radio resource comprises a size of the radio resource and a sum obtained by sequentially adding the sizes.

8. A method for transmitting a downlink frame to a terminal, the method comprising:

expressing, on a pattern sequence, a radio resource, among a plurality of radio resources in the downlink frame, that is differently allocated from a previous frame;

generating resource allocation information on the plurality of radio resources in the downlink frame; and

transmitting the downlink frame including the pattern sequence and the resource allocation information to the terminal,

wherein the resource allocation information is generated based on the pattern sequence.

9. A method for informing a terminal of radio resource allocation by using a pattern sequence including a plurality of radio resources, the method comprising:

determining a compression unit length;

dividing the pattern sequence into a plurality of compression units based on the compression unit length, determining a compression possibility for the plurality of compression units, and expressing the compression possibility in a compression indicator sequence; and

expressing a compressed sequence in a compressed pattern sequence when compression can be performed according to the compression possibility, and expressing an original sequence in the compressed pattern sequence when the compression cannot be performed.