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SYSTEM AND METHOD FOR EVALUATING PERFORMANCE CHARACTERISTICS OF BASE STATIONS IN WIRELESS COMMUNICATION SYSTEMS

IP.com Disclosure Number: IPCOM000171429D
Publication Date: 2008-Jun-09
Document File: 10 page(s) / 74K

Publishing Venue

The IP.com Prior Art Database

Abstract

The present invention relates, in general, to testing of wireless communication systems. More specifically, the present invention relates to a system and method for evaluating performance characteristics of base stations, independent of scheduling algorithms of subscriber stations, in a wireless communication system.

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SYSTEm and method FOR Evaluating performance characteristics of base stations in wireless communication systems

The present invention relates, in general, to testing of wireless communication systems. More specifically, the present invention relates to a system and method for evaluating performance characteristics of base stations, independent of scheduling algorithms of subscriber stations, in a wireless communication system.

A system and method for evaluating performance characteristics of base stations in a wireless communication system is disclosed.

A wireless communication system, such as a Worldwide Interoperability for Microwave Access (WiMAX) communication system and an Orthogonal Frequency-Division Multiple Access (OFDMA) communication system, typically includes one or more subscriber stations connected to a base station. The subscriber stations communicate with the base station using radio frequency (RF) links. In the disclosed system and method, a subscriber station test module is connected to the base station in order to generate network traffic, such as test data, for testing the base station. The subscriber station test module includes an emulated subscriber station (ESS). Further, the ESS includes an ESS transmitter and an ESS receiver. Moreover, a base station test module is connected to the base station in order to evaluate performance characteristics of the base station. The base station test module includes a receiver. The ESS transmitter sends request messages to the base station. The request messages include requests for bandwidth allocation for transmitting the test data from the ESS transmitter to the base station. The test data includes one or more test data packets. The base station determines an appropriate bandwidth to be allocated to the ESS in response to the received request messages. Further, the base station allocates the determined bandwidth to the ESS and provides a transmission opportunity for the transmission of the test data packets to the base station. Thereafter, the base station sends control messages to the ESS receiver. The control messages signal the ESS transmitter to send the test data packets to the base station at a transmission rate determined by the base station. The test data is received by the base station, processed and transmitted to the receiver of the base station test module. The receiver receives the processed test data and accordingly, evaluates the performance characteristics of the base station.

In accordance with various embodiments of the present invention, the ESS is not required to implement any scheduling algorithm for transmitting the test data packets to the base station. Thus, the proposed technique evaluates the performance characteristics of the base station independent of the scheduling algorithms of the ESS and hence, eliminates the impac...