Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Admission control with directional antenna

A technology of directional antenna and directional transmission, applied in the direction of access restriction, wireless communication, radio/induction link selection and arrangement, etc., can solve the problem of space interference deviation from space white and so on

Inactive Publication Date: 2008-12-24
NOKIA TECHNOLOGLES OY
View PDF1 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This is especially important for systems with mixed voice and high bit rate data traffic, where spatial interference may deviate from the assumption of spatial whiteness, which is generally assumed to be valid for WCDMA systems supporting only a large number of voice users

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Admission control with directional antenna
  • Admission control with directional antenna
  • Admission control with directional antenna

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0035] like figure 1 As shown, a preferred embodiment is now described based on an admission control scheme for a WCDMA base station 20 using an antenna array or smart antenna (SA) 10 by means of a conventional beamforming algorithm.

[0036] according to figure 1 , the cellular WCDMA network includes a radio network controller (RNC) 30 to which a base station (BS) 20 with an SA 10 is connected. In this example, a directional power based admission control (AC) algorithm is implemented at the BS 20 using the SA 10 . Therefore, the directional transmission power is selected as the directional transmission parameter. The admission control function can also be implemented in the RNC. The AC function can in principle be located anywhere (network oscillator) provided the required input parameters are available.

[0037] Furthermore, using the pointing azimuth direction φ 1 to φ7 The 7 beams in FIG. 1 illustrate the effective transmit or receive power azimuth spectrum of a BS 20...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

An apparatus and method for performing an admission control of a terminal device with an antenna array in a cellular network is provided. The admission control decision is based on a direction-specific load determined by an estimation of a load-dependent directional parameter. Additionally, a cell-splitting function with at least two scrambling codes can be implemented.

Description

technical field [0001] The present invention relates to a method and system for performing admission control by means of directional antennas such as antenna arrays in a cellular network such as a WCDMA (Wideband Code Division Multiple Access) network. Background technique [0002] From Z.Liu, M.Zarki, "SIR Based Call Admission Control for DS-CDMA Cellular Systems (for DS-CDMA cellular system SIR-based call admission control)", IEEE Journal on Selected Areas in Communications, Vol.12, No. .4, pp.638-644, May 1994, from Z.Dziong, M.jia, P.Mermelstein, "Adaptive Traffic Admission for Integrated Services in CDMA Wireless Access Networks (Adaptive Traffic Admission for Integrated Services in CDMA Wireless Access Networks Adapting to business licensing)", IEEE Journalon Selected Areas in Communications, Vol.14, No.9, pp.1737-1747, December 1996, and from S. Kumar, S. Nanda, "High Data-Rate Packet Communications for Cellular Networks Using CDMA: Algorithms and Performance (High D...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): H04Q7/38H04W16/28H04W48/02H04W72/04
CPCH04W16/28H04W28/16
Inventor 克劳斯·英格曼·帕德森布里本·埃尔加德·莫格森胡安·拉米若·莫瑞诺
Owner NOKIA TECHNOLOGLES OY
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com