the link layer protocol for cable internet access
Báo cáo hóa học: "Research Article An Energy-Efficient Link Layer Protocol for Reliable Transmission over Wireless Networks" pdf
... checksums in the headers on these virtual fragments, the sender transmits the MAC data frame The receiver calculates the checksum for each virtual fragment separately If the checksum is correct for every ... εdata εack the ACK frame is received without errors at the sender, then the process transits back to the “Send Frame” state for transmission of a new data frame If either the data frame or the ACK ... the protocols will have to retransmit the entire packet Therefore, we ignore collision overhead in our analysis 3.2 Simple Positive-ACK Protocol Simple Positive-ACK is the de-facto standard for...
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Báo cáo hóa học: " A QoS guaranteeing MAC layer protocol for the “underdog” traffic" ppt
... parenthesis is the time required for the corresponding station to acknowledge the poll by returning a combined Data/CF-ACK frame The fourth term then accounts for the time required for all the ... because of the large delay incurred in waiting for one’s turn [17] Therefore, from the HP user’s viewpoint, it is more advantageous to operate in the CP rather than the CFP On the other hand, ... constrained to the CFP while LP and HP traffic compete for channel access during the CP The HC in the CP also polls stations for HP traffic In Equation 4, UCP is the average duration of time the useful...
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The Broadband Bonus: Accounting for Broadband Internet’s Impact on U.S. GDP potx
... of another set of efforts by the FCC to measure the deployment of broadband lines, information that the 17 The first government surveys of household Internet adoption date back to 1997 These ... a range for the estimates, and (3) decompose the causes 40 The standard recommendation is to use the adopters’ reservation value for the new good; that is, the price index should use the maximum ... using either the populations in 1999 and 2006 as the baseline The baseline for the population matters because there was so much change in the characteristics of this population over these eight...
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Báo cáo hóa học: " Research Article Frame-Aggregated Link Adaptation Protocol for Next Generation Wireless Local Area Networks" pot
... simply consider the choice of the PHY -layer modulation and coding schemes (MCS) in the goodput modeling Therefore, in order to further enhance the network goodput performance, the proposed FALA ... paper, a frame-aggregated link adaptation (FALA) protocol is proposed to maximize the goodput performance for the IEEE 802.11n networks based on cross -layer information The conventional rate-adaptive ... only involves the design of several counters and timers within the MAC layer protocol However, without the consideration of PHY layer information (e.g., the channel SNR values), the adaptation...
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using the border gateway protocol for interdomain routing
... and the IP address is usually the IP address of the interface at the other end of the connection (For the exception to this rule, see the section "EBGP Multihop," later in this chapter.) For ... Incomplete) If the origin codes are the same, prefer the path with the lowest MED attribute If the paths have the same MED, prefer the external path over the internal path If the paths are still the same, ... the update Prefer the path with the largest weight If the weights are the same, prefer the path with the largest local preference If the local preferences are the same, prefer the path that was...
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THE MAGB HACCP PROTOCOL for malting
... a scale number for the impact of the risk, and another for the likelihood of its occurrence, and multiplying one by the other Risk rating = Impact X Likelihood (See section 7) The rating system ... levels The preventative measures to be implemented at these critical points are also identified It is intended that the Protocol should provide an auditing framework for the industry The Protocol ... However, when the changes inside the grain are to the maltsters’ requirements, then the final stage in the malting process is the application of heat in a specially designed kiln, and the resultant...
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Tài liệu Opportunity for All - How the American Public Benefits from Internet Access at U.S. Libraries pptx
... unable to afford them, they may need basic training in how to use them, or they may be displaced from their normal access points Fortunately, public libraries have taken on the role as the provider ... go to the library for Internet access, whether they have a connection at home or not Users turned to computers at the public library for a wide range of reasons, whether it was because they did ... Opportunity for All: How the American Public Benefits from Internet Access at U.S Libraries | 37 public library computer to access the Internet in the past year, making them more likely to be public access...
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IANA Rules for the Protocol for Carrying Authentication for Network Access (PANA) doc
... Introduction This document relaxes the IANA rules for the Protocol for Carrying Authentication for Network Access (PANA) [RFC5191] Rules for the following protocol fields, all defined in [RFC5191], ... Values The rationale for this update is that there can be situations in which it makes sense to grant an allocation under special circumstances At the time of this writing, the IETF is in the process ... only [RFC5191] defined the range of values from - The same Message Type is used for both the request and the answer messages, except for type The Request bit distinguishes requests from answers...
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Báo cáo hóa học: " Research Article Reducing the MAC Latency for IEEE 802.11 Vehicular Internet Access" pdf
... illustrating the second for iteration in Algorithm If the MS is moving toward APn then the APR is utilized and if it is moving away, the APR is discarded Otherwise, if there is no movement of the MS ... scenario the MS’s location at time t+1 will again calculate the distance with the APn ’s location, illustrating the first for iteration in Algorithm Both distances are then compared to check whether the ... channel on the channel list and wait for beacon frames After a complete channel set is scanned, the MS will extract the information from the beacon frames and use them along with the corresponding...
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Báo cáo hóa học: " Editorial Cross-Layer Design for the Physical, MAC, and Link Layer in Wireless Systems" doc
... 2 information from the PHY layer is allowed to influence the operation of the MAC layer The second paper, “Exploiting transmit buffer information at the receiver in block-fading ... by the joint use of a power control algorithm on the PHY layer and a backoff algorithm on the MAC layer The protocol is an excellent example of the gains to be had by a joint design across these ... topic of the cross -layer design between the physical and the medium access layer Four papers are dedicated to different scenarios/aspects of the downlink resource allocation Finding the capacity...
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Báo cáo y học: " The ANU WellBeing study: a protocol for a quasi-factorial randomised controlled trial of the effectiveness of an Internet support group and an automated Internet intervention for depressio" doc
... one of the four trial conditions and were sent an information sheet about the project and the intervention conditions together with a consent form At this point, however, neither they, their interviewer ... could not be accessed until the week scheduled for its delivery, it remained open for the remainder of the 12 week intervention period and for 12 months from the commencement of the intervention ... methodological advice, undertook the randomisation process and edited the paper KB contributed to the design of the protocol, oversaw the IT implementation of the project and edited the paper All authors...
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Phy layer and mac layer protocol design and performance analysis for opportunistic spectrum access in cognitive radio networks
... the PUs’ work Thus, the coexistence of SUs and PUs at the same frequency bands brings the challenges for the protocol design of the secondary network on both physical (PHY) layer and medium access ... (MAC) layer In this thesis, we focus on cognitive radio networks (CRN) and aim to improve the spectrum sensing performance at the PHY layer and to solve the access contention problem at the MAC layer ... access priority Therefore, SUs must first detect and avoid interference to the primary network at the PHY layer and then compete to use the channel within the secondary network at the MAC layer Many...
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Tài liệu Designing for Profitability in the Physical Layer of Wireless Networks docx
... Bypassing the needs of Operations in design of the physical layer is a formula for higher costs and poor network performance that invites churn and reduces profits In designing the physical layer, ... attention to the bend radius of cables For copper cables, improper bend radius or routing over sharp edges leads to cable fatigue or severed cable that disrupts service If fiber cables are bent ... Designing for Profitability Cable Routing Paths Creating a reliable, low-maintenance cabling infrastructure for the long-term depends upon proper routing of cables throughout MSCs and BSCs For fiber cables,...
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Tài liệu Community Internet Access in Rural Areas: Solving the Economic Sustainability Puzzle doc
... rural Internet facilities depend on “always-on” connectivity for access to the Internet, some use dial-up connectivity The negative impact of time-metered calls for Internet access, versus the ... Price per Subscriber for the corDECT Wireless Local Loop System $700 $650 Price per line in US$ there—they will never leverage the Metcalfe Effect and the real value of the Internet When entire ... of their effect on others That is, each additional user increases the value of the network to all other users quadratically, offering more opportunities for interaction, seeding incentives for...
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The impact of a cancer Survivorship Care Plan on gynecological cancer patient and health car provider reported outcomes (ROGY Care): study protocol for a pragmatic cluster randomized controlled trial potx
... in the study by their own gynecologist, after initial diagnosis The gynecologists will send all their patients the first questionnaire, together with a letter and leaflet to inform them about the ... was not possible for them to be blinded to the group assignment The participants on the other hand are unaware of the group assignment, as they are under the assumption that the hospital is providing ... with the amount of information; (d) Desire for more information; (e) Desire for less information; (f) Helpfulness of information Furthermore, a more specific question will be added about whether...
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The Greenhouse Gas Protocol - The GHG Protocol for Project Accounting doc
... 2004; and • the GHG Protocol for Project Accounting (this document) PA R T I CHAPTER 1: 1.1 The GHG Protocol for Project Accounting The GHG Protocol for Project Accounting (Project Protocol) provides ... not, the assumption is that GHG reductions are not a decisive reason for pursuing the project (or conversely, that the only real reason is to conform to common practice for the same reasons as other ... only information that users—both internal and external to the GHG project—need for their decision-making This information should thus fit the intended purpose of the GHG project and meet the expectations...
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Protocol for Conducting Environmental Compliance Audits of Storage Tanks under the Resource Conservation and Recovery Act pdf
... the regulations and statutes These sections are not intended to function as the main tool of the protocol (this is the purpose of the checklist) Instead, they serve to remind the auditor of the ... from the public regarding the format, style and general approach used for the audit protocols The last appendix in each protocol document contains a user satisfaction survcy and comment form ... included in these protocols There can also he multiple state agencies regulating the areas covered in these protocols The auditor also should determine which regulatory agency has authority for implementing...
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Internet Time Synchronization: the Network Time Protocol pdf
... evolved within the Internet protocol suite, there is obvious application to the OSI protocol suite, in particular the protocols of the connectionless (CNLS) branch of that suite Perhaps the most attractive ... system The offset of two clocks is the time difference between them, while the skew is the frequency difference between them The reliability of a timekeeping system is the fraction of the time ... trimmed-mean statistics The results show consistently lower errors for the minimum filter when compared the other algorithms Perhaps the most dramatic result with the minimum filter is the greatly reduced...
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Testing Applications on the Web: Test Planning for Mobile and Internet-Based Systems pdf
... Even the user interface is only partially under the application developer’s control the customer supplies the presentation layer: the browser, the music and video player, and perhaps various other ... have access to the source code, but he or she knows much more about the underlying architecture and the nature of the interfaces between the application under test and the other software and the ... the Internet resource for busy testers, tracking all the Internet links referenced in this book Given that the Internet changes by the minute, we expect that some of the links referenced will...
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