Evaluation of random access lead code

A random access preamble and random access technology, applied in electrical components, wireless communications, network planning, etc., to enhance random access performance and reduce risks

Inactive Publication Date: 2012-01-11
TELEFON AB LM ERICSSON (PUBL)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] This problem is mainly solved by a method of collecting statistics on a per random access preamble basis and a method of managing random access operation in a cell of a cellular radiocommunication network using said collected statistics

Method used

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  • Evaluation of random access lead code
  • Evaluation of random access lead code
  • Evaluation of random access lead code

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0022] figure 1 A non-limiting embodiment of a communication system SYS1 in which the invention can be used is shown. figure 1 A typical communication system SYS1 shown in is the Universal Mobile Telecommunications System (UMTS). The communication system SYS1 comprises a cellular radio communication network NET1 and user equipments (UEs), alternatively called mobile stations (MSs). The cellular radio communication network NET1 comprises a core network CN1 and a UMTS Terrestrial Radio Access Network (UTRAN) RAN1.

[0023] The core network CN1 includes a mobile services switching center (MSC) node MSC1 for providing circuit-switched services and a general packet radio service (GPRS) node SGSN1 for providing packet-switched services. SGSN1 is sometimes also called a Serving GPRS Support Node (SGSN ).

[0024] Each of the core network nodes MSC1 and SGSN1 is connected to the radio access network RAN1 via a radio access network interface called the Iu interface. The radio acces...

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PUM

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Abstract

The present invention relates to methods and arrangements for gathering statistics relating to random access operation in a cell of a cellular radio communication network and supervising such random access operation. Statistics are gathered (301), per random access preamble code, relating to random access detections associated with one or more random access preamble codes used in the cell. Based on such gathered statistics, random access operation in the cell may be supervised by evaluating (311) the gathered statistics and, upon determining (312) that the random access detections associated with a specific random access preamble code exhibit an abnormal behaviour likely to be caused by false random access preamble detections, initiating (313) at least one of issuing a corresponding operation and maintenance alarm signal and automatically blocking further use of said specific random access preamble code in the cell.

Description

technical field [0001] The invention relates to random access operation in a cellular radio communication network. More particularly, the present invention relates to methods and arrangements for collecting statistics and managing random access operations in a cellular radio communication network. Background technique [0002] In a cellular radio communication system, such as the Universal Mobile Telecommunications System (UMTS) specified by the Third Generation Partnership Project (3GPP), a mobile station obtains initial access to radio channel resources by performing a random access procedure. [0003] A mobile station (optionally also referred to as user equipment) operating in a cell of a WCDMA cellular system (i.e. a UMTS system operating in FDD mode) communicates by sending random access preambles at gradually increasing power Random access on the Random Access Channel (RACH) is initiated. When the base station serving the cell detects a valid random access preamble,...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W36/08H04W16/26H04B1/707H04J13/00H04J13/16H04W24/00H04W24/08H04W88/18
CPCH04W88/18H04W24/08H04W24/00
Inventor J·彼得森
Owner TELEFON AB LM ERICSSON (PUBL)
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