Apparatus and method for controlling data transfer rate on reverse link in mobile communication system

#This application claims the benefit under 35 U.S.C. § 119(a) of Korean patent application filed in the Korean Intellectual Property Office on Nov. 3, 2007 and assigned Serial No. 2006-108123, the entire disclosure of which is hereby incorporated by reference.

#The present invention relates to an apparatus and method for controlling wireless resources in a mobile communication system. More particularly, the present invention relates to an apparatus and method for controlling a data transfer rate on a reverse link in a mobile communication system.

#Mobile communication systems employing a 2nd Generation (2G) Code Division Multiple Access (CDMA) scheme generally provide voice-based services over a relatively low-speed traffic channel on a forward and reverse link. Herein, the forward link is defined as a direction from a base station (BS) to a mobile station (MS), and the reverse link is defined as a direction from the mobile station to the base station. However, instead of the simple voice-based services, users now demand a variety of services. To satisfy such user demands, systems capable of providing data services have been developed, and a worldwide standard has been prepared. As described above, the mobile communication systems have recently evolved from voice-based systems to 3rd Generation (3G) systems which are designed to provide high-speed data services.

#For a more complete understanding of the present disclosure and its advantages, reference is now made to the following description taken in conjunction with the accompanying drawings, in which like reference numerals represent like parts:

#FIG. 1 is a flowchart illustrating a process in which a Base Station (BS) determines a data transfer rate on a reverse link by using a load-based method in a conventional mobile communication system;

#FIG. 2 is a flowchart illustrating a process in which a BS determines a data transfer rate on a reverse link by using a Rise Over Thermal (ROT)-based method in a conventional mobile communication system;

#FIGS. 3 through 6, discussed below, and the various embodiments used to describe the principles of the present disclosure in this patent document are by way of illustration only and should not be construed in any way to limit the scope of the disclosure. Those skilled in the art will understand that the principles of the present disclosure may be implemented in any suitably arranged wireless network.

#A technique of the present invention will be described hereinafter in which a sector load is predicted by using an interference factor indicating interference caused by an adjacent sector, and a data transfer rate on a reverse link is determined according to the predicted sector load. In the present invention, a Code Division Multiple Access (CDMA)-based mobile communication system will be described for example.

#FIG. 3 is a block diagram illustrating a base station (BS) in a mobile communication system according to the present invention.