[PDF] Top 20 H-MAC: A Channel-Hopping Based Multi-Channel MAC Protocol for 802.11 Wireless LANs

... IEEE 802.11 provides a contention-based MAC protocol for single channel wireless ...IEEE 802.11 to a multi-channel ... See full document

... proposed a release-time-based MMAC protocol to overcome the control channel bottleneck prob- lem and the dynamic channel selection problem for the DCC ...chance for ... See full document

... of multi-channel hidden terminal problem and the unbalanced loads of each ...hybrid MAC protocols utilizing multiple channels efficiently can improve the original IEEE ...802.11 ... See full document

... presented a multi-channel MAC protocol that utilizes multiple channels to improve throughput in wireless ...the multi-channel hidden terminal and deafness problems, ... See full document

... the MAC layer for IEEE 802.11 WLANs: AMP and ...are based on the proposed RTS/CTS/SEQ exchange for IEEE 802.11 WLANs, and are derived from existing ...the ... See full document

... channels required is independent of the network topology and degree, (iii) it flexibly adapts to host mobility, (iv) no form of clock synchronization is required and (v) power control is used to exploit frequency reuse. ... See full document

... 1) Channel Contention Period: a) Probing Subperiod: In the probing subperiod, each node contends for the channel by the IEEE ...propose a novel approach for estimating the ... See full document

... the multi-group service priority, channel access can then be reserved for both direct data transmission and packet relaying in a more balanced ...in a high collision environment, the ... See full document

... RELIMINARY A. System Scenario We consider the uplink transmission of a centralized co- operative wireless network, in which the CC and the user terminals are equipped with the MPR ...to a ... See full document

... IEEE 802.11 wireless LAN standard can be used simultaneously to increase the aggregate ...However, multi-channel multi-interface protocols may incur a type of hidden ... See full document

... IEEE 802.11 also suffers from the erroneous reserva- tion ...propose a JMAC protocol which is free from both the hidden terminal and erroneous reservation problems, and thus pro- vides higher ... See full document

... on a cluster-based multi-channel protocol for VANETs ...requirement for simultaneous channel usage might be unsuitable for a single channel ... See full document

... packets/s. For each packet arriving at a host, we randomly chose a host at the former’s neighborhood as its ...each channel’s bandwidth is 1 Mbit s −1 ...the protocol. For ... See full document

... node A do not hear that and may try to make transmission to node ...of A break the receiving of node B from node ...node A know the transmission on E->B is about to go and know the link E->B is ... See full document

... 存取控制協定S-MAC(Sensor MAC)[1]，提出了使用 週期性的睡眠讓感測器進入睡眠狀態而達到省 電，然而進入睡眠狀態則會產生資料傳輸中斷而形 成睡眠延遲。接著在2003年，由Tijs van Dam等人 提出了T-MAC(Timeout MAC)[2]，主張減少工作週 期來達到更省電的目的，但是沒有考慮到資料傳輸 效能以及睡眠延遲問題，到了2005年由Yang等人提 ... See full document

... U-MAC, a medium access control protocol designed for wireless sensor ...days, wireless sensor network are formed by a great quantity of sensor nodes, which are generally ... See full document

... In addition to providing fair access for regular nodes (e.g., clients) through regular cycles, PACCI offers prioritized access t o privileged nodes (e.g., servers) through restricte[r] ... See full document

... presented a power-efficient polling (PEP) scheme for VoIP traffic over IEEE ...HCF. A QAP can maintain its polling list ...that a QSTA sends to the QAP and the utilization of allocated ...of ... See full document

... Abstract— A wireless sensor network is composed of a great number of sensing devices equipped with limited power ...is a key issue for designing sensor network ...IEEE ... See full document

... controller, MAC can easily exploit the multipacket capability of PHY layer due to the full knowledge about the packet status for all ...mechanism for scheduling the uplink transmission due to the ... See full document