Logo etsi

ETSI's Bug Tracker

Notice: information submitted on the ETSI issue Tracker may be incorporated in ETSI publication(s) and therefore subject to the ETSI IPR policy.

View Issue Details [ Jump to Notes ]

[ Issue History ] [ Print ]

Project

Category

View Status

Date Submitted

Last Update

0005846

GeoNetworking

Base Spec

public

08-12-2010 13:00

20-02-2015 14:39

Reporter

Andras Kovacs

Assigned To

Andreas Festag

Priority

normal

Severity

minor

Reproducibility

N/A

Status

closed

Resolution

fixed

Platform

OS Version

Product Version

TS 102 636 4-1 V0.0.9

Target Version

Fixed in Version

Next Release

Summary

0005846: TS102636-4-1 v0.0.9 / Annex D.3: pseudo-code is misleading

Description

While the intention of the algorithm is understandable from the textual description, the following part of pseudo-code is very misleading:

            IF (DEST_LL_ADDR = L_LL_ADDR) THEN
                ADD FP TO B
                Set TO = MAX
                Set COUNTER = 1
            ELSE
                Add FP in B
                Set TO
                Set COUNTER = 0
            ENDIF
            Start TIMER(TO)
            Return 0

Specific issues:
- the role of COUNTER (later its comparison against MAX_COUNTER) are not described. Since the GeoBroadcast handling procedure already involves packet duplicate detection, it effectively checks against COUNTER limit value 1. So this variable is not needed here. (same issue with state diagram)
- the line with 'Set TO' seems incomplete.
- L_LL_ADDR is not defined (probably it's the local link layer address of the ITS station)
- the logic appears to be wrong, as (DEST_LL_ADDR = L_LL_ADDR) condition is meant to indicate immediate re-broadcast

Additional Information

Perhaps rather than fixing the pseudo-code and state diagram, they should be just removed now.
It would save effort to add them back in a later version, which would describe the recommended iterative re-broadcast timer algorithm.

Tags

No tags attached.

Attached Files

Relationships

Notes
(0009993) Andreas Festag (manager) 01-02-2011 05:58	Fixed in Version 0.1.0

(0012794) Sebastian Muellers (administrator) 20-02-2015 14:39	start of new project

Issue History
Date Modified	Username	Field	Change
08-12-2010 13:00	Andras Kovacs	New Issue
01-02-2011 05:58	Andreas Festag	Status	new => resolved
01-02-2011 05:58	Andreas Festag	Fixed in Version	=> Next Release
01-02-2011 05:58	Andreas Festag	Resolution	open => fixed
01-02-2011 05:58	Andreas Festag	Assigned To	=> Andreas Festag
01-02-2011 05:58	Andreas Festag	Note Added: 0009993
20-02-2015 14:39	Sebastian Muellers	Note Added: 0012794
20-02-2015 14:39	Sebastian Muellers	Status	resolved => closed

MantisBT 1.2.14 [^]