Direct PCF

In original 802.11 infrastructure network, a station (STA) is not allowed to transmit frames directly to other STAs within range. Frame delivery should rely on access point (AP) because recipients may be in power save mode and must be woke up before transmission. To allow direct transmission, 802.11...

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Bibliographic Details
Published in2009 IEEE 13th International Symposium on Consumer Electronics pp. 967 - 970
Main Authors Liao, J.-R., Shun-Zhi Lee
Format Conference Proceeding
LanguageEnglish
Published IEEE 01.05.2009
Subjects
Access control
Access protocols
Ad hoc networks
Communication standards
Consumer electronics
direct link
HCCA
PCF
Quality of service
Relays
Robustness
Standards development
Wireless LAN
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Summary:In original 802.11 infrastructure network, a station (STA) is not allowed to transmit frames directly to other STAs within range. Frame delivery should rely on access point (AP) because recipients may be in power save mode and must be woke up before transmission. To allow direct transmission, 802.11e defines a new operation called direct link set-up (DLS). In DLS, STA can initiate a direct link through AP. One problem not addressed in DLS is how STA collects its neighborhood information. Without this information, it is difficult to know when to establish a direct link. Therefore, we proposed a new direct link protocol for 802.11 PCF and HCCA. We call it Direct PCF (DPCF). Because AP knows all the STAs in its range, the initiator of a direct link in our protocol is AP. We show that DPCF is efficient in data delivery and quick in error recovery.
ISBN:9781424429752
1424429757
ISSN:0747-668X
2159-1423
DOI:10.1109/ISCE.2009.5156838