{"id":316,"date":"2020-11-30T10:57:04","date_gmt":"2020-11-30T15:57:04","guid":{"rendered":"https:\/\/www.alpharithms.com\/?post_type=term&p=316"},"modified":"2021-07-27T08:08:32","modified_gmt":"2021-07-27T12:08:32","slug":"alternating-bit-protocol","status":"publish","type":"post","link":"https:\/\/www.alpharithms.com\/alternating-bit-protocol-045710\/","title":{"rendered":"Alternating Bit Protocol"},"content":{"rendered":"

Alternating Bit Protocol (ABP) is a data reliability measure that is implemented in reliable data transfer protocols on the network layer protocol stack<\/a>. It requires data receivers to send acknowledgments (ACKs) to the receiver along with a single-bit value representing a sequence number of the last received transmission unit.<\/p>\n

The basic premise of the ABP is that a sender should retransmit data until it receives an acknowledgment from the recipient. A typical sequence of data transfer using the ABP may unfold as such:<\/p>\n

    \n
  1. The sender sends data segment A with SEQ 0, starts a timer;<\/li>\n
  2. The Receiver receives data segment A with SEQ 0;<\/li>\n
  3. The receiver sends a packet back to the sender with ACK0;<\/li>\n
  4. The Sender stops the timer for SEQ0 packet; waits for application input to transmit SEQ1;<\/li>\n
  5. The receiver receives data segment B, but determines data corruption, sends ACK0 (for last valid received data);<\/li>\n
  6. Sener receives an ACK for the wrong SEQ number, knows to re-transmit previous data.<\/li>\n<\/ol>\n

    In this sequence, a sender sends data across the network, receives a positive response, sends more data, and then receives a negative response. This signals to the sender that the data was\u00a0not<\/em> well-received and should be re-transmitted.<\/p>\n

    This protocol provides error\/loss\/corruption detection by alternating bit values between 1<\/code> and 0<\/code> for use as sequence numbers. The advantage offered is data reliability however, the disadvantage is the restriction of the number of packets that can be transmitted at any given time.<\/p>\n","protected":false},"excerpt":{"rendered":"

    Alternating Bit Protocol (ABP) is a data reliability measure that is implemented in reliable data transfer protocols on the network layer protocol stack. It requires data receivers to send acknowledgments (ACKs) to the receiver along with a single-bit value representing a sequence number of the last received transmission unit. The basic premise of the ABP […]<\/p>\n","protected":false},"author":2,"featured_media":2472,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"inline_featured_image":false,"footnotes":""},"categories":[3,260],"tags":[146,461,145],"acf":[],"_links":{"self":[{"href":"https:\/\/www.alpharithms.com\/wp-json\/wp\/v2\/posts\/316"}],"collection":[{"href":"https:\/\/www.alpharithms.com\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.alpharithms.com\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.alpharithms.com\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.alpharithms.com\/wp-json\/wp\/v2\/comments?post=316"}],"version-history":[{"count":1,"href":"https:\/\/www.alpharithms.com\/wp-json\/wp\/v2\/posts\/316\/revisions"}],"predecessor-version":[{"id":317,"href":"https:\/\/www.alpharithms.com\/wp-json\/wp\/v2\/posts\/316\/revisions\/317"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.alpharithms.com\/wp-json\/wp\/v2\/media\/2472"}],"wp:attachment":[{"href":"https:\/\/www.alpharithms.com\/wp-json\/wp\/v2\/media?parent=316"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.alpharithms.com\/wp-json\/wp\/v2\/categories?post=316"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.alpharithms.com\/wp-json\/wp\/v2\/tags?post=316"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}