发明名称 |
OVERLAPPING NETWORK ALLOCATION VECTOR (ONAV) FOR AVOIDING COLLISION IN THE IEEE 802.00 WLAN OPERATING UNDER HCF |
摘要 |
<p>The present invention is related to a medium access control (MAC) protocol for avoiding collisions among ESTAs when two or more overlapping basic service sets (OBSSs) co-exist and operate in the same channel. To achieve this, each mobile station operating under HCF maintains a first counter known as Network Allocation Vector (NAV) and a second counter known as Overlapping Network Allocation Vector (ONAV), which is updated within a mobile station by frames coming from OBSSs, during the Contention Free Period (CFP) or during a Contention Free Burst (CFB) granted by a polling frame. The mobile station uses the NAV to update only to the medium occupancy in its own BSS to ensure that the mobile station will not interfere with the transmissions in its own QBSS, while the ONAV is used to avoid collisions with the mobile stations from the OBSS.</p> |
申请公布号 |
EP1396111(B1) |
申请公布日期 |
2006.04.26 |
申请号 |
EP20020727905 |
申请日期 |
2002.05.15 |
申请人 |
KONINKLIJKE PHILIPS ELECTRONICS N.V. |
发明人 |
DEL PRADO, JAVIER;CHOI, SUNGHYUN;SOOMRO, AMJAD |
分类号 |
H04L12/00;H04L12/28;H04L12/56 |
主分类号 |
H04L12/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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