Pbcch Availability

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91 PBCCH Availability

Measurement

DN00208995Issue 3-0 en

# Nokia Siemens Networks 1 (21)

BSC3119

Nokia BSC/TCSM, Rel. S12, Product

Documentation, v.3


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2 (21) # Nokia Siemens Networks DN00208995Issue 3-0 en

91 PBCCH Availability Measurement


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Contents

Contents 3

List of tables 4

List of figures 5

Summary of changes 7

1 91 PBCCH Availability Measurement 9

2 Counters of PBCCH Availability Measurement 13



Contents


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List of tables

Table 1. Measurement description of PBCCH Availability Measurement 9

Table 2. Counters of PBCCH Availability Measurement 10




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Summary of changes

Changes between document issues are cumulative. Therefore, the latest

document issue contains all changes made to previous issues.

Changes made between issues 3 and 2

Information for counters 091025 091027 in Chapter 2 has been updated.

Information in table for counter 091014 has been modified in Chapter 2.

The name of the document and of Chapter 1 has been changed from BSC

Counters: PBCCH Availability Measurement to 91 PBCCH Availability

Measurement.

Measurement description table and table of measurement counters have

been added.

The document has been revised throughout to comply with the latest

documentation standards.

Changes made between issues 2 and 1-1

1. Introduction

The link targets updated

2. Counters

The cell titles in the tables updated to conform with the S11 release

Changes made between issues 1-1 and 1

2. Counters



Summary of changes


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The information updated for the following counter: 091008




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1 91 PBCCH Availability MeasurementThe Packet Broadcast Control Channel (PBCCH) is used to send packet

data -specific system information in the downlink direction. The PacketCommon Control Channel (PCCCH) comprises logical channels for

common control signaling which are used for packet data in both

directions:

. Packet Paging Channel (PPCH): Used for paging an MS.

. Packet Random Access Channel (PRACH): Used for requesting

radio resources.

. Packet Access Grant Channel (PAGCH): Used for allocating radio

resources.

The multiframe structure for packet control channels consists of 52 TDMA

frames, divided into 12 radio blocks (B0-B11). The radio blocks that are not

used for transmitting control blocks may carry packet data.

The counters in the measurement can be divided into two groups: uplink

PCCCH load counters and downlink PCCCH load counters. The contents

of the counters are related to channel availability and access.

Measurement description

Table 1. Measurement description of PBCCH Availability Measurement

Measurement

Measurement ID

Measurement abbreviation

PBCCH Availability Measurement

91

PBCCH

Product BSC

Product software release S10

Target name BTS





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Measurement counters

Table 2. Counters of PBCCH Availability Measurement

Counter Counter number

NUMBER OF PRACH SLOTS 091000

NUMBER OF 52 MULTIFRAMES 091001

NBR OF PACKET CHANNEL REQUESTS 091002

NUMBER OF BUSY PRACH 091003

MAX NON-DRX PPCH BUFFER 091004

AVE NON-DRX PPCH BUFFER 091005

AVE NON-DRX PPCH BUFFER DEN 091006

MAX PAGCH BUFFER 091007

AVE PAGCH BUFFER 091008

VE PAGCH DEN 091009

MAX DRX BUFFER OCCUPANCY 091010

AVERAGE DRX BUFFER OCCUPANCY 091011

AVERAGE DRX BUFFER OCCUP DEN 091012

NBR OF DELETED DRX PPCH MSGS 091013

NBR OF DEL NON-DRX PPCH MSGS 091014

NBR OFDELETED PAGCH MSGS 091015

NBR OF PACKET DL ASSIGNMENT MSGS DELETED

FROM DRX BUFFER

091016

NBR OF DEL PACK PAGING REQS 091017

NBR OF CS PAGING REQS ON PCCCH 091018

NBR OF PS PAGING REQS ON PCCCH 091019

NBR OF PP REQ MSGS ON PCCCH 091020

P UL ASS MSGS ON PCCCH 091021

NON DRX P DL ASS MSGS ON PCCCH 091022

DRX P DL ASS MSGS ON PCCCH 091023

P ACCESS REJECT MSGS ON PCCCH 091024

PACKET IMMED ASS UL MSG 091025

PACKET IMMED ASS DL DRX MSG 091026

PACKET IMMED ASS DL NON-DRX MSG 091027




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Related topics

. Counters of PBCCH Availability Measurement

. BSC Statistics Administration

. BSC Measurement Counters Displaying Program (FOXMEA)

. Performance Measurements

. (E)GPRS in BSC

. PCU2 Service Terminal Commands





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2 Counters of PBCCH AvailabilityMeasurement

Number

Name

Release

091000

NUMBER OF PRACH SLOTS

S10

Description With the denominator, this counter gives the average number of

allocated PRACH slots per one 52-multiframe in UL PCCCH. The

number of allocated PRACH slots is four times bigger than the

number of allocated PRACH block periods.

Updated Every 100 52-multiframes (about once in 24 seconds).

Dependencies with other counters/

PI(s)

091001 NUMBER OF 52 MULTIFRAMES

Feature BSS10074: Support of PCCCH/PBCCH

Logical type Basic

Unit PRACH slot.

Number

Name

Release

091001

NUMBER OF 52 MULTIFRAMES

S10

Description Calculates the number of 52-multiframes. Used as a denominator for

several counters.

Updated Every 100 52-multiframes (approximately once in 24 seconds). The

denominator is increased by 100 every time the counter 091000 is

updated.


PI(s)

091000 NUMBER OF PRACH SLOTS, 091002 NBR OF PACKET

CHANNEL REQUESTS


Logical type Denominator

Unit 52-multiframe



Counters of PBCCH Availability Measurement


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Number

Name

Release

091002

NBR OF PACKET CHANNEL REQUESTS

S10

Description With the denominator, this counter gives the average number of valid

access bursts per one 52-multiframe.

Updated When valid Packet Channel Requests or EGPRS Packet Channel

Requests are received in a PCU Random Access Frame. One PCU

Random Access Frame can contain 0 - 4 packet channel requests.


PI(s)



Number

Name

Release

091003

NUMBER OF BUSY PRACH

S10

Description The number of PRACH burst periods during which the received

signal level has exceeded a pre-configured threshold. The busy

count value is the sum of the total access count and total clash countvalues during the measurement period.

Updated When a PCU Random Access Frame is received.


PI(s)



Number

Name

Release

091004

MAX NON-DRX PPCH BUFFER

S10

Description Maximum number of buffered messages in a PPCH queue. The

queue contains non-DRX PACKET DOWNLINK ASSIGNMENT

messages.

Updated Every time a message is added to the queue.





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Number

Name

Release

091005

AVE NON-DRX PPCH BUFFER

S10

Description Average number of buffered messages in a PPCH queue. The queue

contains non-DRX PACKET DOWNLINK ASSIGNMENT messages.

Updated Every 20 seconds.


PI(s)

091006 AVE NON-DRX PPCH BUFFER DEN


Number

Name

Release

091006

AVE NON-DRX PPCH BUFFER DEN

S10

Description Denominator for counter 091005. This calculates the number of

samples.



PI(s)

091005 AVE NON-DRX PPCH BUFFER


Number

Name

Release

091007

MAX PAGCH BUFFER

S10

Description Maximum number of buffered messages in a PAGCH queue. The

queue contains PACKET ACCESS REJECT and PACKET UPLINK

ASSIGNMENT messages.

Updated Every time a message is added to the queue.


Number

Name

Release

091008

AVE PAGCH BUFFER

S10

Description Average number of buffered messages in a PAGCH queue. The

queue contains PACKET ACCESS REJECT and PACKET UPLINK

ASSIGNMENT messages.





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Number

Name

Release

091008

AVE PAGCH BUFFER

S10



PI(s)

091009 AVE PAGCH DEN


Number

Name

Release

091009

AVE PAGCH DEN

S10


samples.



PI(s)

091008 AVE PAGCH BUFFER


Number

Name

Release

091010

MAX DRX BUFFER OCCUPANCY

S10

Description Maximum number of buffered DRX messages in a DRX array. The

array can contain EGPRS PACKET PAGING REQUEST, PACKET

PAGING REQUEST and PACKET DOWNLINK ASSIGNMENT

messages.

Updated Every time a message is added to the array.


Number

Name

Release

091011

AVERAGE DRX BUFFER OCCUPANCY

S10

Description Average number of buffered DRX messages in a DRX array. The

array can contain EGPRS PACKET PAGING REQUEST, PACKET

PAGING REQUEST and PACKET DOWNLINK ASSIGNMENT

messages.





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Number

Name

Release

091011

AVERAGE DRX BUFFER OCCUPANCY

S10


PI(s)

091012 AVERAGE DRX BUFFER OCCUP DEN


Number

Name

Release

091012

AVERAGE DRX BUFFER OCCUP DEN

S10


samples.



PI(s)

091011 AVERAGE DRX BUFFER OCCUPANCY


Number

Name

Release

091013

NBR OF DELETED DRX PPCH MSGS

S10

Description Number of DRX mode PACKET DOWNLINK ASSIGNMENT

messages that have been discarded because of a shortage of DRX

buffer space.

Updated Every time a DRX mode PACKET DOWNLINK ASSIGNMENT

message is discarded.


Number

Name

Release

Modified

091014

NBR OF DEL NON-DRX PPCH MSGS

S10

S11.5

Description Number of non-DRX mode PACKET DOWNLINK ASSIGNMENT

messages that have been discarded because of a shortage of PPCH

queue space.





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Number

Name

Release

Modified

091014

NBR OF DEL NON-DRX PPCH MSGS

S10

S11.5

Updated Every time a non-DRX mode PACKET DOWNLINK ASSIGNMENT,

PACKET CELL CHANGE ORDER, or PACKET MEASUREMENT

ORDER message is discarded.

Feature BSS11112 NCCR

NumberName

Release

091015NBR OF DELETED PAGCH MSGS

S10

Description Number of PACKET ACCESS REJECT and PACKET UPLINK

ASSIGNMENT messages that have been discarded because of a

shortage of PAGCH queue space.

Updated Every time a PACKET ACCESS REJECT or PACKET UPLINK

ASSIGNMENT message is discarded.


Number

Name

Release

091016

NBR OF PACKET DL ASSIGNMENT MSGS DELETED

FROM DRX BUFFER

S10


messages that have been discarded because of a shortage of DRX

buffer space (DRX array).

Updated Every time a DRX mode PACKET DOWNLINK ASSIGNMENT

message is discarded.


Number

Name

Release

091017

NBR OF DEL PACK PAGING REQS

S10

Description Number of packet paging requests that have been discarded

because of a shortage of DRX buffer space (DRX array).

Updated Every time a packet paging request is discarded.




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Number

Name

Release

091017

NBR OF DEL PACK PAGING REQS

S10


Number

Name

Release

091018

NBR OF CS PAGING REQS ON PCCCH

S10

Description Number of circuit switched paging requests sent on the PCCCH.

Updated When a circuit switched paging request is sent.


Number

Name

Release

091019

NBR OF PS PAGING REQS ON PCCCH

S10

Description Number of packet switched paging requests sent on the PCCCH.

Updated When a packet switched paging request is sent.


Number

Name

Release

091020

NBR OF PP REQ MSGS ON PCCCH

S10

Description Number of PACKET PAGING REQUEST messages sent on the

PCCCH.

Updated When a PACKET PAGING REQUEST message is sent.


Number

Name

Release

091021

P UL ASS MSGS ON PCCCH

S10

Description Number of PACKET UPLINK ASSIGNMENT messages sent on the

PCCCH.





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Number

Name

Release

091021

P UL ASS MSGS ON PCCCH

S10

Updated When a PACKET UPLINK ASSIGNMENT message is sent.


Number

Name

Release

091022

NON DRX P DL ASS MSGS ON PCCCH

S10

Description Number of non-DRX mode PACKET DOWNLINK ASSIGNMENT

messages sent on the PCCCH.

Updated When a non-DRX mode PACKET DOWNLINK ASSIGNMENT

message is sent.


Number

Name

Release

091023

DRX P DL ASS MSGS ON PCCCH

S10


messages sent on the PCCCH.

Updated When a non-DRX mode PACKET DOWNLINK ASSIGNMENT

message is sent.


Number

Name

Release

091024

P ACCESS REJECT MSGS ON PCCCH

S10

Description Number of PACKET ACCESS REJECT messages sent on the

PCCCH.

Updated When a PACKET ACCESS REJECT message is sent.





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Number

Name

Release

Modified

091025

PACKET IMMED ASS UL MSG

S10

S11.5

Description This counter is no longer in use.

Dependencies with other counters 072096 PACKET IMMED ASS UL MSG

Number

Name

Release

Modified

091026

PACKET IMMED ASS DL DRX MSG

S10

S11.5


Dependencies with other counters 072097 PACKET IMMED ASS DL DRX MSG

Number

Name

Release

Modified

091027

PACKET IMMED ASS DL NON-DRX MSG

S10

S11.5


Dependencies with other counters 072098 PACKET IMMED ASS DL NON-DRX MSG

Related topics


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Pbcch Availability