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Evaluation of random access lead code

A random access preamble, random access technology, applied in the direction of electrical components, radio/induction link selection arrangement, selection device, etc., to reduce risks and enhance random access performance.

Inactive Publication Date: 2008-06-25
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
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  • Evaluation of random access lead code

Examples

Experimental program
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Embodiment Construction

[0022] Figure 1 shows a non-limiting embodiment of a communication system SYS1 in which the invention can be used. A typical communication system SYS1 shown in Fig. 1 is a 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 access networ...

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Abstract

The invention relates to a method and arrangement for collecting statistics relating to random access operations and managing these random access operations in cells of a cellular radio communication network. For each random access preamble, statistics are collected (301) relating to random access detections associated with one or more random access preambles used at the cell. Based on these collected statistics, the random access operation in the cell can be managed by evaluating (311) the collected statistics, and based on determining (312) the random access detection performance associated with a particular random access preamble activating at least one of signaling a corresponding operation and maintenance warning, and automatically preventing further use of said particular random access preamble in the cell, 313).

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 Applications(China)
IPC IPC(8): H04Q7/36H04B1/707H04J13/00H04J13/16H04W24/00H04W24/08H04W88/18
CPCH04W88/18H04W24/08H04W24/00
Inventor J·彼得森
Owner TELEFON AB LM ERICSSON (PUBL)
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