摘要:
The invention relates to a method for operating a communication system (100) having a plurality of communication units (300, 301, 302, 303, 304) which are connected to a communication medium (110), wherein access to the communication medium (110) is granted to the communication units (300, 301, 302, 303, 304) in a predefined order, wherein, after the end of a standby mode, a communication unit (300, 301, 302, 303, 304) checks whether it is granted access and changes to the standby mode again for a pause duration (T1, T2) until access is likely to be granted to it again if the communication unit (300, 301, 302, 303, 304) does not require access to the communication medium (110) or is not granted access.
摘要:
The invention relates to a method for address initialization in a network (1) comprising a control entity (10) and at least one network element (101, 102, 103, 110). The network element is characterized by an identifier (1012, 1022). The control entity assigns an address to the network element on the basis of the characterizing identifier (1011, 1021, 1031). The identifier that characterizes the network element belongs to a set (100) of one or more possible identifiers, said set being known or communicated to the control entity. The invention also relates to a network (1) which is set up to execute said method, to a computer program comprising program code means for executing method steps and to a machine-readable storage medium comprising a computer program of this type.
摘要:
The invention relates to a method for address initialization in a communications system (1) comprising a control entity (10) and at least one network element (101, 102, 103, 110). The network element has an identifier (1012, 1022, Δt 101 , Δt 102 ). The method comprises the sending of a message (210, 213, 410, 601, 604, 801, 804) from the network element to the control entity, the message being sent at a time (Τ 101 , Τ 102 ) dependent on the identifier for the network element. The method further comprises the assignment of an address (1011, 1021, 1031) to the network element. The invention also relates to a communications system which is set up to execute the method, to a computer program comprising program code means for executing method steps and to a machine-readable storage medium comprising a computer program of this type.
摘要:
The invention relates to a method for the operation of an electromagnetically controllable reducing agent metering valve (24) that is disposed in the exhaust gas system (12) of an internal combustion engine (10) and that is actuated with a first flow profile (46) for metering a reducing agent (26). The method is characterized in that a value is determined for the temperature (T(24)) of the reducing agent metering valve (24) and compared to a threshold value (T_S) and in that, if the temperature (T(24)) determined is less than the threshold value (T_S), an actuation of the reducing agent metering valve (24) occurs with a second flow profile (48) that is different from the first flow profile (46). The invention further relates to a control device (14) that is equipped, particularly programmed, to control the progression of such a method.
摘要:
The invention relates to a method for producing a common secret in a communications system having a first node, a second node, and a medium used jointly by the nodes, characterized by the following features: in response to a predefined event (39) the first node and the second node enter a first superimposition phase (31); in the first superimposition phase (31), the first node transmits (33) a first bit sequence, the second node transmits (34) a second bit sequence for the most part synchronously therewith, and the first node and the second known simultaneously detect an effective third sequence, in which the first bit sequence and the second bit sequence are superimposed place by place on the medium (10, 20); in a second superimposition phase (32), the first node transmits (35) the first a bit sequence inverted place by place, the second node transmits (36) the second bit sequence inverted place by place for the most part synchronously therewith, and the first node and the second node simultaneously detect an effective bit sequence, in which the inverted first bit sequence and the inverted second bit sequence are superimposed; the first node and the second node combine (37) the third bit sequence place by place with the fourth bit sequence to form a fifth bit sequence; the first node and the second node complete (38) a first secret in which the first node deletes bits from the first bit sequence and the second node deletes corresponding bits from the second bit sequence which conforms with regards to the numerical value according to the fifth bit sequence.
摘要:
Disclosed is a method for generating a secret or a key in a network (20). The network (20) comprises at least a first subscriber (21) and a second subscriber (22) and a common transmission channel (30) between at least the first (21) and second subscribers (22). The first subscriber (21) can output at least a first value (1) and a second value (0) and the second subscriber (22) can output at least the first value (1) and the second value (0) on the transmission channel, the first subscriber (21) generating a first sequence of subscriber values and the second subscriber (22) generating a second sequence of subscriber values in order for the transmission to occur largely synchronously on the transmission channel (30); and the first subscriber (21) and the second subscriber (22) each generate a common secret or a common key, the first subscriber (21) doing so on the basis of information about the first sequence of subscriber values and on the basis of a sequence of superposed values resulting from a superposition of the second sequence of subscriber values onto the first sequence of subscriber values on the transmission channel (30), and the second subscriber (22) doing so on the basis of information about the second sequence of subscriber values and on the basis of the sequence of superposed values resulting from the superposition of the second sequence of subscriber values onto the first sequence of subscriber values on the transmission channel (30). At least the first subscriber (21) and the second subscriber (22) determine a sequence of test values in accordance with the resulting sequence of superposed values and output same on the transmission channel (30).