Method of constructing resource allocation map for mobile communication system

• US 8,331,398 B2
• Filed: 05/25/2007
• Issued: 12/11/2012
• Est. Priority Date: 05/25/2006
• Status: Active Grant

• Current Assignee: Electronics and Telecommunications Research Institute, Samsung Electronics Co. Ltd.
• Original Assignee: Electronics and Telecommunications Research Institute, Samsung Electronics Co. Ltd.
• Inventors: Lim, Kwang-Jae, Yoon, Chul-Sik
• Primary Examiner(s): GHOWRWAL, OMAR J
• Application Number:
  US12/301,972
• Publication Number:
  US 20100246498A1
• Time in Patent Office: 2,027 Days
• Field of Search: 370/241, 370/252, 370/310, 370328-329, 370/431, 370/462, 370/464, 455/403, 455/422.1, 455450-453, 455/455, 455/39, 455/500, 455/507, 455/509, 455512-513, 455516-517, 455/73, 455/91, 455/95, 455/130, 455/179.1
• US Class Current: 370/462
• CPC Class Codes: H04L 5/0007 the frequencies being orthogonal, e.g. OFDM(A), DMT
• CPC Class Codes: H04L 5/0039 Frequency-contiguous, i.e. with no allocation of frequencies for one user or terminal between the frequencies allocated to another
• CPC Class Codes: H04L 5/0041 Frequency-non-contiguous

Abstract

The present invention relates to a method of constructing a resource allocation map in a mobile communication system. In a method of constructing a map in a hierarchial pattern method in a case where a localized resource block (localized RB) and a distributed resource block (distributed RB) need to be simultaneously allocated in regards to a radio resource allocated in a previous frame or reserved with a fixed allocation, a radio resource that is reserved or not used and a radio resource that is newly allocated in a map of a current frame are classified and represented. Then, in regards to a radio resource that is allocated in a current frame, a localized RB and a distributed RB are classified and represented. As for the localized RB, allocation information is represented in an index pattern method, and as for the distributed RB, resource allocation information is represented in a toggle pattern method.

Claims

1. A method of constructing a resource allocation map in a case where a base station allocates a radio resource to a plurality of mobile terminals by using a localized resource block in a mobile communication system, the localized resource block being a localized sub-channel composed of neighboring sub-carriers, the method comprising:

including, by the base station, a mobile terminal identifier column where identifiers of the mobile terminals are continuously displayed, in the resource allocation map;

setting, by the base station, an index for each mobile terminal according to an order in which the mobile terminal identifiers are displayed, and allocating an index of a mobile terminal corresponding to each of resource blocks of the radio resource for each resource block, the resource block being a unit of a minimal radio resource found by dividing a radio resource used when data is transmitted;

including, by the base station, an index bit pattern where indexes allocated for the individual resource blocks are arranged according to an order of the resource blocks included in the radio resource, in the resource allocation map, wherein the index for each mobile terminal and the index bit pattern are described in bit notation; and

between the including of the mobile terminal identifier column in the resource allocation map, and the setting of an index for each mobile terminal and the allocating of an index of a mobile terminal for each resource block, determining, by the base station, the number of bits that form the index,

wherein the number of bits that form the index is calculated, by the base station, by Equation {log₂(M)}, where reference character M indicates the number of mobile terminals.

2. A method of constructing a resource allocation map in a case where a base station allocates a radio resource to a plurality of mobile terminals by using a localized resource block in a mobile communication system, the localized resource block being a localized sub-channel composed of neighboring sub-carriers, the method comprising:

including, by the base station, a mobile terminal identifier column where identifiers of the mobile terminals are continuously displayed, in the resource allocation map;

setting, by the base station, an index for each mobile terminal according to an order in which the mobile terminal identifiers are displayed, and allocating an index of a mobile terminal corresponding to each of resource blocks of the radio resource for each resource block, the resource block being a unit of a minimal radio resource found by dividing a radio resource used when data is transmitted;

including, by the base station, an index bit pattern where indexes allocated for the individual resource blocks are arranged according to an order of the resource blocks included in the radio resource, in the resource allocation map, wherein the index for each mobile terminal and the index bit pattern are described in bit notation;

between the setting of an index for each mobile terminal and the allocating of an index of a mobile terminal for each resource block, and including of the index bit pattern in the resource allocation map, allocating, by the base station, an index corresponding to a resource block of the radio resource that is not allocated to the mobile terminal; and

between the including of the mobile terminal identifier column in the resource allocation map, and the setting of an index for each mobile terminal and the allocating of an index of a mobile terminal for each resource block, determining, by the base station, the number of bits that form the index,

wherein the number of bits that form the index is calculated, by the base station, by Equation {log₂(M+1)}, where reference character M indicates the number of mobile terminals.

3. A method of constructing a resource allocation map in a case where a base station allocates a radio resource to a plurality of mobile terminals by using a distributed resource block in a mobile communication system, the distributed resource block being a distributed sub-channel composed of distributed sub-carriers, the method comprising:

including, by the base station, a mobile terminal identifier column where identifiers of the mobile terminals are continuously displayed according to an order in which the radio resource is allocated to the mobile terminals, in the resource allocation map;

setting, by the base station, a toggle bit to each mobile terminal according to an order in which the mobile terminal identifiers are displayed, and allocating a toggle bit of a mobile terminal corresponding to a resource block of the radio resource for each resource block, the resource block being a unit of a minimal radio resource found by dividing a radio resource used when data is transmitted; and

including, by the base station, a toggle bit pattern where the toggle bits allocated for the individual resource blocks are arranged according to the order of the resource blocks included in the radio resource, in the resource allocation map, wherein the index for each mobile terminal and the index bit pattern are described in bit notation,

wherein, in the setting of the toggle bit to each mobile terminal and the allocating of the toggle bit of a mobile terminal for each resource block, different toggle bits are allocated, by the base station, to neighboring mobile terminals in the order in which the radio resource is allocated,

wherein between the setting of the toggle bit to each mobile terminal and the allocating of the toggle bit of a mobile terminal for each resource block, and the including of the toggle bit pattern in the resource allocation map, allocating, by the base station, a toggle bit that corresponds to a resource block of the radio resource that is not allocated to the mobile terminals is further included, and

wherein a toggle bit allocated to a resource block that is not allocated in the allocating of the toggle bit and a toggle bit of a resource block that is adjacent to the resource block not allocated and is allocated with the mobile terminal are different from each other.