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the radio range. For power conservation, a node may set up a specific wake up pattern. This pattern determines at what time the node is ready to receive, so that at other times, the node can turn off its receiver and save energy. These nodes are called p-savers and need so called p-supporters that contain information about wake up patterns of all the p-savers they are responsible for. A p-supporter only forwards data to a p-saver at the moment p-saver is awake. This action also requires buffering mechanisms for packets on p-supporting forwarders.
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HiperLAN does not conflict with microwave and other kitchen appliances, which are on 2.4 GHz. An innovative feature of HIPERLAN 1, which other wireless networks do not offer, is its ability to forward data packets using several relays. Relays can extend the communication on the MAC layer beyond
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Due to competition from IEEE 802.11, which was simpler to implement and made it faster to the market, HiperLAN never received much commercial implementation. Much of the work on HiperLAN/2 has survived in the PHY specification for IEEE 802.11a, which is nearly identical to the PHY of HiperLAN/2.
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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
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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.
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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
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Planning for the first version of the standard, called HiperLAN/1, started 1992, when planning of 802.11 was already going on. The goal of the HiperLAN was the high
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HiperLAN/2 functional specification was accomplished
February 2000. Version 2 is designed as a fast wireless connection for many kinds of networks. Those are
308:(ETSI). In ETSI the standards are defined by the BRAN project (Broadband Radio Access Networks). The HiperLAN standard family has four different versions.
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HIPERACCESS was intended as a last-mile technology. HIPERLINK was intended as a short-range point-to-point technology at 155 Mbit/s.
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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.
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320:, higher than 802.11. The standard was approved in 1997. The functional specification is EN300652, the rest is in ETS300836.
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Basic services in HiperLAN/2 are data, sound, and video transmission. The emphasis is in the quality of these services (
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applications work in HiperLAN because of EY-NPMA priority mechanism. MAC layer defines protocols for
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HiperLAN/2 suitable for the wireless connection of various networks.
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Wolter
Lemstra; Vic Hayes; John Groenewegen (December 27, 2010).
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HiperLAN/2 offers security measures. The data are secured with
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The innovation journey of Wi-Fi: the road to global success
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Most important worldwide manufacturers of HiperLAN/2 are
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The physical layer of HiperLAN/2 is very similar to
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even though there would be a large number of users.
195:. Unsourced material may be challenged and removed.
93:. Unsourced material may be challenged and removed.
73:An editor has performed a search and found that
306:European Telecommunications Standards Institute
384:supports asynchronous and synchronous traffic
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597:. Cambridge University Press. p. 432.
425:wireless local area networks. However, the
53:Learn how and when to remove these messages
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273:Learn how and when to remove this message
255:Learn how and when to remove this message
153:Learn how and when to remove this message
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7:
371:modulations are used in HiperLAN/1.
193:adding citations to reliable sources
91:adding citations to reliable sources
550:. palowireless.com. Archived from
429:(the multiple access protocol) is
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304:standards. It is defined by the
34:This article has multiple issues.
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180:needs additional citations for
42:or discuss these issues on the
486:and the wireless terminal can
390:Description- Wireless Ethernet
1:
629:Wireless networking standards
467:modulations are used through
387:Bit rate - 23.59 Mbit/s
381:slow mobility (1.4 m/s)
393:Frequency range- 5 GHz
79:to establish the subject's
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344:data. EY-NPMA enables the
290:High Performance Radio LAN
323:The standard covers the
76:sufficient sources exist
573:"HiperLAN/2 prototype"
451:On the physical layer
437:is used in 802.11a/n.
363:On the physical layer
509:Failure in the Market
484:wireless access point
433:in HiperLAN/2, while
348:to function with few
16:Wireless LAN standard
427:media access control
329:media access control
300:alternative for the
189:improve this article
87:improve this article
410:back bone network,
374:HiperLAN features:
548:"About HiperLAN/2"
296:standard. It is a
604:978-0-521-19971-1
575:. s2p.de/Sysadmin
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554:on 2008-02-23
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577:. Retrieved
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556:. Retrieved
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490:each other.
488:authenticate
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431:Dynamic TDMA
423:IEEE 802.11a
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331:part of the
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245:January 2024
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187:Please help
182:verification
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143:January 2024
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85:Please help
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36:Please help
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378:range 100 m
302:IEEE 802.11
618:Categories
579:2002-11-19
558:2008-02-20
530:References
497:(Israel),
480:Triple DES
402:HiperLAN/2
354:Multimedia
350:collisions
312:HiperLAN/1
215:newspapers
204:"HiperLAN"
113:newspapers
102:"HiperLAN"
81:notability
39:improve it
505:(Japan).
503:Panasonic
499:Freescale
318:data rate
45:talk page
524:HiperMAN
518:See also
495:Alvarion
327:and the
298:European
286:HiperLAN
501:(USA),
435:CSMA/CA
358:routing
346:network
292:) is a
229:scholar
127:scholar
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342:packet
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465:64QAM
461:16QAM
236:JSTOR
222:books
134:JSTOR
120:books
624:ETSI
599:ISBN
469:OFDM
457:QPSK
453:BPSK
414:and
408:UMTS
369:GMSK
367:and
208:news
106:news
478:or
476:DES
463:or
444:).
442:QoS
412:ATM
365:FSK
191:by
89:by
620::
537:^
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416:IP
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