List of Tables

Table 2.1: Numerical values for the OFDM parameters of 802.11a and HiperLAN/2	10
(IEEE 802.11 WG, 1999a; ETSI, 2000a)
Table 4.1: Priority – AC mapping (IEEE 802.11 WG, 2002a)	46
Table 4.2: 802.11e recommended default values (IEEE 802.11 WG, 2002c).	54
Table 5.1: Used EDCF parameters with legacy backoff.	63
Table 5.2: EDCF parameter sets for the three ACs, as selected for the analysis. The TXOPlimit
per AC is not used in this thesis; one value is used for all ACs. Note that the legacy DCF backoff	68
is assumed.
Table 5.3: EDCF parameters Used for three ACs.	98
Table 5.4: Used EDCF parameters for the three ACs.	106
Table 5.5: Achievable throughput (all ACs) with two isolated stations [kbit/s].	107
Table 5.6: Max. achievable throughput saturation throughput (all ACs) [kbit/s].	107
Table 5.7: EDCF parameters used for the analysis of the overlapping QBSS scenarios.	114
Table 8.1: Deviating behaviors – resulting pairs of payoffs per players i, -i as taken from the
analytic approximation. Player i deviates the demands from its requirements by increasing or
decreasing ∆ , or Θ . The opponent player -i plays BEH-P or BEH-B.	187
Table 8.2: Deviating behaviors – resulting utilities per players i,-i now taken from stochastic
simulation instead of the analytic approximations.	187
Table 9.1: Discounting factors of different QoS characteristics (Berlemann 2003)	191
Table C.1: HiperLAN/2 and 802.11a PHY layer characteristics	226
Table C.2: Coding parameters for calculating the PER, as used in Qiao and Choi (2001)	228

Abbreviations

AC	Access Category
ACF	Auto Correlation Function
ACK	Acknowledgement
AID	Association Identifier
AIFS	Arbitration Inter Frame Space
	(measured in us)
AIFSN	Arbitration Inter Frame Space
	Number (measured in slots)
ALOHA	Ala Lokahi Oia'i'o Ha'aha'a
	Ahonui
AP	Access Point
APC	Access Point Controller
APSD	Automatic Power-Save Deliv-
	ery
APT	Access Point Transceiver
ARQ	Automatic Repeat Request
aSlotTime	contention window slot dura-
	tion
ASN.1	Abstract Syntax Notation
ATM	Asynchronous Transfer Mode
BE	Best Effort
BER	Bit Error Ratio
BRAN	Broadband Radio Access
	Networks
BSA	Basic Service Area
BSS	Basic Service Set
BSSID	Basic Service Set Identification
C/I	Carrier to Interference ratio
CA	Collision Avoidance
CAP	Controlled Access Phase
CBR	Constant Bit Rate
CC	Central Controller
CCA	Clear Channel Assessment

CCHC	Central Controller Hybrid
	Coordinator
CCK	Complementary Code Keying
CCDF	Complementary Cumulative
	Distribution Function
CDF	Complementary Cumulative
	Distribution Function, syno-
	nym for CCDF
CEPT	Conference of Postal and
	Telecommunications Admini-
	strations
CF	Coordination Function
CFB	Contention Free Burst
CF-End	Contention Free-End
CFP	Contention Free Period
CF-Poll	Contention Free-Poll
CF-Pollable	Contention Free-Pollable
CL	Controlled Load (802.1D)
CL	Convergence Layer (ETSI
	BRAN HiperLAN/2)
CNCL	ComNets Class Library
CP	Contention Period
CRC	Cyclic Redundancy Check
CSMA	Carrier Sense Multiple Access
CSMA/CA	Carrier Sense Multiple Access
	/ Collision Avoidance
CSMA/CD	Carrier Sense Multiple Access
	/ Collision Detection
CTS	Clear To Send
CW	Contention Window
CWmax	Contention Window Maximum
CWmin	Contention Window Minimum
DA	Destination Address

254

DCA	Dynamic Channel Allocation
DCC	DLC Connection Control
DCF	Distributed Coordination
	Function
DCS	Dynamic Channel Selection
DF	Distribution Function
DFS	Dynamic Frequency Selection
DIFS	Distributed Coordination
	Function Interframe Space
DiL	Direct Link
DL	Downlink
DLC	Data Link Control
DLCC	DLC Connection
DLP	Direct Link Protocol
DQPSK	Differential QPSK
DS	Distribution System
DSM	Distribution System Medium
DSS	Distribution System Services
DSSS	Direct Sequence Spread Spec-
	trum
DTIM	Delivery Traffic Indication
	Message
EC	Error Control
EDCF	Enhanced Distributed Coordi-
	nation Function
EE	Excellent Effort
EIFS	Extended Interframe Space
EIRP	Equivalent Isotropically Radi-
	ated Power
ERC	European Radiocommunica-
	tions Committee
ERO	European Radiocommunica-
	tions Office
ESS	Extended Service Set
ETSI	European Telecommunications
	Standards Institute
FCC	Federal Communication
	Commission

		Abbreviations
FCCH	Frame Control Channel
FCH	Frame CHannnel
FCS	Frame Check Sequence
FDM	Frequency Division Multiplex-
	ing
FHSS	Frequency Hopping Spread
	Spectrum
FTP	File Transfer Protocol
HC	Hybrid Coordinator
HCF	Hybrid Coordination Function
HiperLAN/2		High Performance
	Local Area Network Type 2
HR-DSSS	High Rate Direct Sequence
	Spread Spectrum
HTTP	Hypertext Transfer Protocol
IAPP	Inter AP Protocol
IBSS	Independent Basic Service Set
ICI	Inter-Channel Interference
IEEE	Institute of Electrical and
	Electronics Engineers, Inc.
IFFT	Inverse Fast Fourier Transform
IFS	Interframe Space
IMT-2000	International Mobile Tele-
	communications-2000
IP	Internet Protocol
IR	Infrared
ISI	Inter-Symbol Interference
ISM	Industrial, Science, Medical
ISO	International Organization for
	Standardization
ITU	International Telecommunica-
	tions Union
LA	Link Adaptation
LAN	Local Area Network
LBT	Listen Before Talk

Abbreviations

LCCH	Link Control Channel
LCH	Long transport Channel
LLC	Logical Link Control
LOS	Line of Sight
LRC	Long Retry Counter
LRE	Limited Relative Error
MAC	Medium Access Control
MAC-SAP	MAC Service Access Point
MCM	Multi Carrier Modulation
MF	MAC Frame
MLME	MAC Layer Management
	Entity
MLME-SAP	MLME - Service Ac-
	cess Point
MMPDU	MAC Management Protocol
	Data Unit
MPDU	MAC Protocol Data Unit
MPEG	Moving Pictures Expert Group
MSDU	MAC Service Data Unit
MSG	Multi Stage Game
NAV	Network Allocation Vector
NC	Network Control
OFDM	Orthogonal Frequency Divi-
	sion Multiplexing
OSI	Open System Interconnection
PC	Point Coordinator
PCF	Point Coordination Function
PDU	Protocol Data Unit
PER	Packet Error Ratio
PF	Persistence Factor
PHY mode	Physical Layer mode, coding
	and modulation scheme
PHY	Physical Layer
PIFS	Point Coordination Function
	Interframe Space
PLCP	Physical Layer Convergence
	Protocol

	255
PLME	PHY Layer Management
	Entity
PMD	Physical Medium Dependent
PPDU	Physical (layer) Protocol Data
	Unit
PSDU	PHY Service Data Unit
QAM	Quaternary Amplitude Modu-
	lation
QAP	QoS Access Point
QBSS	Quality of Service Basic Ser-
	vice Set
QIBSS	Quality of Service Independ-
	ent Basic Service Set
QoS	Quality of Service
QPSK	Quaternary Phase Shift Keying
QSTA	QoS Station
RA	Random Access (Hiper-
	LAN/2)
RA	Receiving station Address
	(802.11)
RCP	Radio link Control Protocol
RetryCnt	Retry Counter
RLC	Radio Link Control
RR	Resource Request
RRC	Radio Resource Control
RTS	Request to Send
SA	Source Address
SAP	Service Access Point
SAR	Segmentation and Reassembly
SBCH	Slow Broadcast Channel
SCH	Short Transport Channel
SDL	System Description Language
SDU	Service Data Unit
SER	Symbol Error Ratio
SFDUR	Superframe Duration
SIFS	Short Interframe Space
SME	Station Management Entity
SRC	Short Retry Counter

256

SS	Station Service
SSG	Single Stage Game
STA	Station
TA	Transmitting station Address
TBTT	Target Beacon Transmission
	Time
TCLAS	Traffic Classification
TCP	Transport Control Protocol
TID	Traffic Identifier
TPC	Transmitter Power Control
TS	Traffic Stream
TSF	Timing Synchronization Func-
	tion
TSID	Traffic Stream Identifier
TSPEC	Traffic Specification

	Abbreviations
TXOP	Transmission Opportunity
TXOPlimit	Transmission Opportunity
	Limit
UL	Uplink
UMTS	Universal Mobile Telecommu-
	nications System
U-NII	Unlicensed-National Informa-
	tion Infrastructure
U-SAP	User Service Access Point
VBR	Variable Bit Rate
VI	Video < 100 ms delay
VO	Voice, video < 10 ms delay
WEP	Wired Equivalent Privacy
Wi-Fi	Wireless Fidelity
WSS	Wide Sense Stationary
WSTA	Wireless STA