MAC Part I - UCLA Computer Science
... • Frequency spectrum sliced into frequency subbands (eg, 125 subbands in a 25 Mhz range) • Time is subdivided into slots; each slot can carry several bits (slow FH) • A typical packet covers several time slots (up to 5 slots in Bluetooth) • A transmitter changes frequency slot by slot (frequency hop ...
... • Frequency spectrum sliced into frequency subbands (eg, 125 subbands in a 25 Mhz range) • Time is subdivided into slots; each slot can carry several bits (slow FH) • A typical packet covers several time slots (up to 5 slots in Bluetooth) • A transmitter changes frequency slot by slot (frequency hop ...
Chapter 18 Internet Protocols
... — Entity may wish more than one connection simultaneously — PDUs must be identified by connection identifier ...
... — Entity may wish more than one connection simultaneously — PDUs must be identified by connection identifier ...
IP Packet Switching
... • Link: physical medium connecting nodes – Twisted pair: the wire that connects to telephones – Coaxial cable: the wire that connects to TV sets – Optical fiber: high-bandwidth long-distance links – Space: propagation of radio waves, microwaves, … ...
... • Link: physical medium connecting nodes – Twisted pair: the wire that connects to telephones – Coaxial cable: the wire that connects to TV sets – Optical fiber: high-bandwidth long-distance links – Space: propagation of radio waves, microwaves, … ...
Communications and networking Early technology:
... • routers exchange information frequently about routes – which nets each knows about and number of hops to reach them ...
... • routers exchange information frequently about routes – which nets each knows about and number of hops to reach them ...
More Info »
... interoperability between different VHF equipment and gateways over IP. This interoperability is achieved using standard SIP and RTP VoIP protocols for VHF voice transport, as well as the RTP extender field for the transport of the Push to Talk (PTT) on-hook/off-hook transitions. Link Delay Compensat ...
... interoperability between different VHF equipment and gateways over IP. This interoperability is achieved using standard SIP and RTP VoIP protocols for VHF voice transport, as well as the RTP extender field for the transport of the Push to Talk (PTT) on-hook/off-hook transitions. Link Delay Compensat ...
งานนำเสนอ PowerPoint
... a block of data and passes this to the transport layer • Each of these blocks the transport layer appends a transport header, containing protocol information • The combination of data from the next higher layer and control information is known as a protocol data unit (PDU) ...
... a block of data and passes this to the transport layer • Each of these blocks the transport layer appends a transport header, containing protocol information • The combination of data from the next higher layer and control information is known as a protocol data unit (PDU) ...
continued - cgtechlab.us!
... Public radio, cell phones, one-way paging, satellite, infrared, and private, proprietary radio More expensive to install and use Health concerns; wireless network can interfere with other devices Two types: fixed-point wireless and mobile wireless ...
... Public radio, cell phones, one-way paging, satellite, infrared, and private, proprietary radio More expensive to install and use Health concerns; wireless network can interfere with other devices Two types: fixed-point wireless and mobile wireless ...
IP Packet Switching COS 461: Computer Networks Spring 2008 (MW 1:30‐2:50 in COS 105) Mike Freedman
... • Link: physical medium connecTng nodes – Twisted pair: the wire that connects to telephones – Coaxial cable: the wire that connects to TV sets – OpTcal fiber: high‐bandwidth long‐distance links – Space: propagaTon of radio waves, microwaves, … ...
... • Link: physical medium connecTng nodes – Twisted pair: the wire that connects to telephones – Coaxial cable: the wire that connects to TV sets – OpTcal fiber: high‐bandwidth long‐distance links – Space: propagaTon of radio waves, microwaves, … ...
Transport Layer
... Connectionless - usually achieved by transmitting information in one direction, from source to destination without checking to see if the destination is still there, or if it is prepared to receive the information ...
... Connectionless - usually achieved by transmitting information in one direction, from source to destination without checking to see if the destination is still there, or if it is prepared to receive the information ...
ad hoc wireless networks
... Considering the transmitted power of all nodes in the network, it must be optimized with respect to all layers that it impacts. As increasing transmit power at the physical layer reduce PER and that decrease the retransmission required at the access layer, but a high transmit power from one node of ...
... Considering the transmitted power of all nodes in the network, it must be optimized with respect to all layers that it impacts. As increasing transmit power at the physical layer reduce PER and that decrease the retransmission required at the access layer, but a high transmit power from one node of ...
組態管理 - Yen-Cheng Chen / 陳彥錚
... (1). Send out a query, such as ICMP Echo (ping) to every possible address on the network. (2). When a device answers the query, ask for detailed information using network management protocol (e.g. SNMP). ...
... (1). Send out a query, such as ICMP Echo (ping) to every possible address on the network. (2). When a device answers the query, ask for detailed information using network management protocol (e.g. SNMP). ...
Embedded System Communication
... No physical connection needed for transport at physical layer ...
... No physical connection needed for transport at physical layer ...
Embedded System Communication
... No physical connection needed for transport at physical layer ...
... No physical connection needed for transport at physical layer ...
Electronic Commerce
... • Does not support encoding of the structure and meaning of structured documents -e.g. spread sheets, address books, technical drawings etc. • Thus such documents cannot be effectively indexed or searched. • Formal descriptions of content and services are absent - Automated information extraction fr ...
... • Does not support encoding of the structure and meaning of structured documents -e.g. spread sheets, address books, technical drawings etc. • Thus such documents cannot be effectively indexed or searched. • Formal descriptions of content and services are absent - Automated information extraction fr ...
Introduction and Overview - Assignment #1
... that you can use to send messages to each other. But, the droids may be destroyed by the enemy’s PatrolBots, so you have no way of knowing if your message gets through unless Luke sends a droid back to you with a confirmation message. Suppose your droid gets through to Luke and Luke sends a droid ba ...
... that you can use to send messages to each other. But, the droids may be destroyed by the enemy’s PatrolBots, so you have no way of knowing if your message gets through unless Luke sends a droid back to you with a confirmation message. Suppose your droid gets through to Luke and Luke sends a droid ba ...
Computer Network
... Token Ring Access method: Token passing Topologies: Ring Speed: 4 Mbps to 16 Mbps FODI (Fiber Distributed Data Interference) Access method: Token Passing Topologies: Ring Cables: optical Fiber Speed: 100 Mbps ATM (asynchronous Transfer Mode) Access method: CSMA/ CD Topologies: Ring Cables: Opt ...
... Token Ring Access method: Token passing Topologies: Ring Speed: 4 Mbps to 16 Mbps FODI (Fiber Distributed Data Interference) Access method: Token Passing Topologies: Ring Cables: optical Fiber Speed: 100 Mbps ATM (asynchronous Transfer Mode) Access method: CSMA/ CD Topologies: Ring Cables: Opt ...
tutorial 1 - UniMAP Portal
... 9. What difference does it make to the network layer if the underlying data link layer provides a connection-oriented service versus a connectionless service? 10. Which OSI layer is responsible for the following? (a) Determining the best path to route packets. (b) Providing end-to-end communications ...
... 9. What difference does it make to the network layer if the underlying data link layer provides a connection-oriented service versus a connectionless service? 10. Which OSI layer is responsible for the following? (a) Determining the best path to route packets. (b) Providing end-to-end communications ...
PPT
... of information it contains, and some data. • What the message “means,” i.e., how to interpret the bytes in the message, is an agreement between the two communicating parties (the protocol). ...
... of information it contains, and some data. • What the message “means,” i.e., how to interpret the bytes in the message, is an agreement between the two communicating parties (the protocol). ...
Web
... Supported field integration of hardware and software for a new Mobility Manager unit. Recognized by customers including Verizon (USA), Alcatel (USA) and KDDI (Japan) and internal System Integration Lab members for providing quick solutions to reported issues. ...
... Supported field integration of hardware and software for a new Mobility Manager unit. Recognized by customers including Verizon (USA), Alcatel (USA) and KDDI (Japan) and internal System Integration Lab members for providing quick solutions to reported issues. ...
William Stallings Data and Computer
... interference between adjacent pairs often used at customer facilities and also over distances to carry voice as well as data communications low frequency transmission medium ...
... interference between adjacent pairs often used at customer facilities and also over distances to carry voice as well as data communications low frequency transmission medium ...