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Method for allocating bandwidth from radio frequency spectrum in cellular network including set of cells

A cellular network and radio frequency spectrum technology, applied in the field of dynamic wireless resource allocation, can solve the problems of reducing ICI and wasting resources

Inactive Publication Date: 2011-01-05
MITSUBISHI ELECTRIC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

MDHO can reduce the ICI despite using the same resources for the replicated signal
That is, MDHO wastes resources because the MS uses resources from more than one cell, which could otherwise be utilized by other MSs

Method used

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  • Method for allocating bandwidth from radio frequency spectrum in cellular network including set of cells
  • Method for allocating bandwidth from radio frequency spectrum in cellular network including set of cells
  • Method for allocating bandwidth from radio frequency spectrum in cellular network including set of cells

Examples

Experimental program
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Embodiment Construction

[0042] Resource allocation

[0043] Figure 1A A radio resource allocation structure according to an embodiment of our invention is shown. Figure 1A Seven cells 100 of a cellular network are shown. To simplify the figure, the area served in each cell is shown in the shape of a hexagon 100 . It should be understood that this is an approximation of the shape of the cell, eg other shapes are possible depending on the topography, topology and architecture (eg buildings) in the cell.

[0044] At approximately the center of each cell there is a base station 110 . A base station serves a mobile station (MS) 111 in a cell. It should be appreciated that the BSs may utilize the infrastructure 400 or backbone of the network to cooperate with each other, as is known in the art and described in Figure 4 shown in .

[0045] Figure 1A The configuration of can be generalized to more than seven cells. Here, the frequency reuse factor is 1. That is, each cell uses the entire bandwidth ...

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Abstract

A method allocates bandwidth from a radio frequency spectrum in a cellular network including a set of cells. Each cell includes a base station for serving a set of mobile stations in the cell. An area around each base station is partitioned into a center region and a boundary region. In each base station, bandwidth for use in the center region is reserved according to an inter-cell interference coordination (ICIC) protocol, and bandwidth for use in the boundary region is reserved according to the ICIC protocol and a base station cooperation (BSC) protocol. Then, the bandwidth is allocated to mobile stations as the mobile stations communicate with the base station in the center regions and the boundary regions according to the bandwidth reservations.

Description

technical field [0001] The present invention relates generally to dynamic radio resource allocation in wireless cellular networks, and more particularly to reducing inter-cell interference. Background technique [0002] OFDMA [0003] Orthogonal frequency-division multiplexing (OFDM: Orthogonal frequency-division multiplexing) is a modulation technique used by some wireless networks at the physical layer (PHY: physical layer), for example, designed according to the well-known IEEE 802.11a / g and IEEE 802.16 / 16e standards network of. Orthogonal Frequency Division Multiple Access (OFDMA: Orthogonal Frequency Division Multiple Access) is a multiple access protocol based on OFDM. In OFDMA, separate sets of orthogonal subcarriers (subchannels or frequencies) and time slots are allocated by the base station (BS: base station) to multiple transceivers or mobile stations (MS: mobile station), so that the transceivers can be concurrently communication. Due to its efficiency and va...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W16/02
CPCH04W72/0426H04W4/02H04W72/0493H04W28/26H04W72/0453H04W72/541
Inventor 陶志峰张坤好张佑榕毛雪鸿
Owner MITSUBISHI ELECTRIC CORP
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