LOCAL AREA NETWORK OPERATION METHOD Russian patent published in 2008 - IPC G06F15/173 H04L29/02 

FIELD: physics, computing.

SUBSTANCE: invention relates to local area networks. The technical effect is the increase in the local area network quality by generating seven frame types, decrease in the quantity of frame types and overhead costs for the data packet (DP) transmission implementation, and provision of automatic network restoration from a failure/malfunction state when more than one master local area network stations (LNSs) appear in the network or the master LNS disappears from the network, correspondingly. The method of local area network operation with the data communication line with common access and centralised determinated message communication control based on their separation into DPs and the DP transmission in information frames between the addressed subscribers of all its LNSs is implemented using three types of control frames (CF1, CF2, CF3), an information frame (IF), and three types of response frames (RF1, RF2, RF3), CF1 containing the first start combination (SC1), a discriminator field, an individual LNS address field, an addressing modifier (AM), a control command (CC) field, and a monitoring bit; the difference of CF2 from CF1 is the contents of the CC field and the presence of a service word following the CC field; CF3 contains SC1, a discriminator field, an individual DP recipient address field, an individual DP sender address field, a DP length field, an AM, a communication method modifier (CMM), and a monitoring bit, the IF contains the second start combination, a DP field, and a resolvable checksum word, RF1 contains SC1, a discriminator field, an LNS status word, and a monitoring bit, the difference of RF2 from RF1 is the presence of a service word following the LNS status word field, RF3 is CF1 or CF2 or CF3 with inversed values of bits in the discriminator field.

EFFECT: increase in local area network quality, decrease in quantity of frame types and overhead costs for implementation of data packet transmission, and provision of automatic network restoration in event of malfunction.