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Node B scheduling method for mobile communication system

A node, non-scheduling technology, applied in wireless communication, communication between multiple stations, power management, etc., can solve problems such as defects in Node B scheduling

Inactive Publication Date: 2006-05-24
LG ELECTRONICS INC
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  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

Node B instead of RNC also performs uplink scheduling of transmission rate / power in order to quickly adjust to uplink load changes, but Node B scheduling also has drawbacks

Method used

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  • Node B scheduling method for mobile communication system
  • Node B scheduling method for mobile communication system
  • Node B scheduling method for mobile communication system

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Embodiment Construction

[0022] Referring now to the drawings, wherein like numerals indicate like or corresponding parts throughout the several views, the present invention will be described.

[0023] Compared to the related art RNC uplink scheduling method, Node B scheduling allows the ability to control the uplink load amount by adjusting the transmission power / rate of the user equipment (UE). Thus, the Node B scheduler can operate to schedule Node Bs with a relatively small noise rise margin by minimizing changes in uplink loading. This results in increased cell capacity and cell coverage expansion.

[0024] Note that the noise rise margin is defined as follows. Each Node B has a noise rise limit. The noise rise is defined as the total noise received divided by the thermal noise. The noise rise margin is defined as the margin between the noise rise limit and the average noise rise. A smaller noise rise margin allows the communication system to provide eg greater capacity.

[0025] Although th...

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Abstract

PURPOSE: A base station scheduling method in a mobile communication system is provided to be applied to an uplink base station scheduling function of terminals which are soft handed over with plural base stations, thereby preventing performance deterioration while more effectively controlling an uplink noise rise in each base station. CONSTITUTION: A BSC determines proper weights of each terminal which is soft handed over, based on uplink related information(S10), and periodically informs a scheduling base station of the determined weights(S11). The scheduling base station analyzes a self noise rise to calculate a 'current tolerable noise rise', and determines transmit powers of the terminals, then applies the weights when determining a final transmit power(S12). The base station performs a scheduling process by directly informing each terminal of the determined final transmit power or by increasing / decreasing a current transmit power(S13).

Description

technical field [0001] The present invention relates to a wireless mobile communication system, and more particularly, to a Node B scheduling method applicable to an uplink channel to reduce variation of uplink interference in a wireless communication system. Background technique [0002] In the radio (wireless) mobile communication system, the concept of enhanced uplink dedicated channel is discussed to solve the demand of high speed uplink. As is known, a wireless communication network typically includes a plurality of mobile stations (MS), a plurality of base stations (B), a base station controller (BC), a mobile switching center (MSC), a packet data serving node (PDSN) or an interworking function ( IWF), Public Switched Telephone Network (PSTN) and Internet Protocol (IP) networks. [0003] See, eg, JUHUA KORHONEN, INTRODUCTION TO 3G MOBILE COMMUNICATIONS SYSTEMS (2nd Edition, 2003), the entire contents of which are hereby incorporated by reference. In the telecommunica...

Claims

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Application Information

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IPC IPC(8): H04B7/26
CPCH04B7/26H04W36/18H04W52/40
Inventor 安俊基金学成元胜焕
Owner LG ELECTRONICS INC
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