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HIPERLAN (HIgh PErformance Radio LAN) is a Wireless LAN standard. It is a European alternative for the IEEE 802.11 standards (the IEEE is an American organization). It is defined by the European Telecommunications Standards Institute (ETSI). In ETSI the standards are defined by the BRAN project (Broadband Radio Access Networks). The HIPERLAN standard family has four different versions. To meet Wikipedias quality standards, this article or section may require cleanup. ...
World map showing Europe Europe is conventionally considered one of the seven continents of Earth which, in this case, is more a cultural and political distinction than a physiogeographic one. ...
IEEE 802. ...
The Institute of Electrical and Electronics Engineers or IEEE (pronounced as eye-triple-ee) is an international non-profit, professional organization incorporated in the State of New York, United States. ...
The European Telecommunications Standards Institute (ETSI) is a standardization organization of the telecommunications industry (equipment makers and network operators) in Europe, with worldwide projection. ...
HIPERLAN/1 Planning for the first version of the standard, called HIPERLAN/1, started 1991, when planning of 802.11 was already going on. The goal of the HIPERLAN was the high data rate, higher than 802.11. The standard was approved 1996. The functional specification is EN300652, the rest is in ETS300836.
The standard covers the physical and the Media Access Control part of the Data Link layers like 802.11. There is a new sublayer called Channel Access and Control sublayer (CAC). This sublayer deals with the access requests to the channels. The accomplishing of the request is dependent on the usage of the channel and the priority of the request.
CAC layer provides hierarchical independence with Elimination-Yield Non-Preemptive Multiple Access mechanism (EY-NPMA). EY-NPMA codes priority choices and other functions into one variable length radio pulse preceding the packet data. EY-NPMA enables the network to function with few collisions even though there would be a large number of users. Multimedia applications work in HIPERLAN because of EY-NPMA priority mechanism. MAC layer defines protocols for routing, security and power saving and provides naturally data transfer to the upper layers.
On the physical layer FSK and GMSK modulations are used in HIPERLAN/1.
HIPERLAN features:
- range 50 m
- slow mobility (1.4 m/s)
- supports asynchronous and synchronous traffic
- sound 32 kbit/s, 10 ns latens
- video 2 Mbit/s, 100 ns latens
- data 10 Mbit/s
HIPERLAN does not conflict with microwave and other kitchen appliances, which are on 2.4GHz.
HIPERLAN/2 HIPERLAN/2 functional specification was accomplished February 2000. Version 2 is designed as a fast wireless connection for many kinds of networks. Those are UMTS back bone network, ATM and IP networks. Also it works as a network at home like HIPERLAN/1. HIPERLAN/2 uses the 5 GHz band and up to 54 Mbit/s data rate. Universal Mobile Telecommunications System (UMTS) is one of the third-generation (3G) mobile phone technologies. ...
Asynchronous Transfer Mode, or ATM for short, is a cell relay network protocol which encodes data traffic into small fixed-sized (53 byte; 48 bytes of data and 5 bytes of header information) cells instead of variable sized packets as in packet-switched networks (such as the Internet Protocol or...
The Internet Protocol (IP) is a data-oriented protocol used by source and destination hosts for communicating data across a packet-switched internetwork. ...
Basic services are data, sound, and video transmission. The emphasis is in the quality of these services (QoS). In the fields of packet-switched networks and computer networking, the traffic engineering term Quality of Service (QoS) refers to the probability of the telecommunication network meeting a given traffic contract, or in many cases is used informally to refer to the probability of a packet succeeding in passing between...
The standard covers Physical, Data Link Control and Convergence layers. Convergence layer takes care of service dependent functionality between DLC and Network layer (OSI 3). Convergence sublayers can be used also on the physical layer to connect IP, ATM or UMTS networks. This feature makes HIPERLAN/2 suitable for the wireless connection of various networks.
On the physical layer BPSK, QPSK, 16QAM or 64QAM modulations are used. Binary Phase Shift Keying, or BiPhase Shift Keying, (BPSK) is a method of encoding and/or transmitting data on top of a carrier. ...
Quadrature phase-shift keying (quadriphase, quaternary phase-shift keying) is a form of modulation in which a carrier is sent in four phases, 45, 135, 225, and 315 degrees, and the change in phase from one symbol to the next encodes two bits per symbol. ...
Quadrature amplitude modulation (QAM) is a modulation scheme which conveys data by changing (modulating) the amplitude of two carrier waves. ...
Quadrature Amplitude Modulation (QAM) is the encoding of information into a carrier wave by variation of the amplitude of both the carrier wave and a quadrature carrier that is 90° out of phase with the main carrier in accordance with two input signals. ...
Good security measures are offered by HIPERLAN/2. The data are secured with DES or Triple DES algorithms. The access point and the wireless terminal can authenticate each other. General Designer(s) IBM First published 1975 (January 1977 as the standard) Derived from Lucifer (cipher) Cipher(s) based on this design Triple DES, G-DES, DES-X, LOKI89, ICE Algorithm detail Block size(s) 64 bits Key size(s) 56 bits Structure Feistel network Number of rounds 16 Best...
In cryptography, Triple DES (also 3DES) is a block cipher formed from the Data Encryption Standard (DES) cipher. ...
HIPERLAN: already obsolete, or future technology? Some people believe that the IEEE 802.11 standards have already occupied the niche that HIPERLAN was designed for, albeit with lower performance but higher market penetration, and that the network effect of existing deployment will prevent the adoption of HIPERLAN. They also state that, since the primary use of WLANs is to provide Internet access, the lack of QoS support in the commercial Internet will make the support for QoS in access networks irrelevant. IEEE 802. ...
The network effect causes a good or service to have a value to a potential customer dependent on the number of customers already owning that good or using that service. ...
Others believe that the superior technical performance of HIPERLAN/2 can offer new services that 802.11 variants are incapable of delivering. As of 2006 HIPERLAN has largely failed in the marketplace compared to 802.11. 2006 (MMVI) is a common year starting on Sunday of the Gregorian calendar. ...
The development of 802.11n, which will define the next level of performance in WLANs, is not paralleled by any further attempt at HIPERLAN activity. IEEE 802. ...
See also HIPERMAN stands for High Performance Radio Metropolitan Area Network and is a standard created by the European Telecommunications Standards Institute (ETSI) Broadband Radio Access Networks (BRAN) group to provide a wireless network communication in the 2 - 11 GHz bands across Europe and other countries which follow the ETSI standard. ...
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