Prioritized transfer of data telegrams
A technology for data message and data transmission, applied in transmission systems, digital transmission systems, data exchange networks, etc.
Active Publication Date: 2013-03-06
SIEMENS AG
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Problems solved by technology
However, this known method, collectively called "Quality of Service", has the disadvantage that the data needs to be checked against a flag giving priority (so-called "Flag") at a relatively high layer of the OSI layer model provided for data communication Each device participating in the data transmission must first analyze the data message to determine its priority and then prioritize the data message corresponding to the determined priority or suspend processing for other data messages
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[0031] figure 1 A system 10 is shown with a sending device 11a and a receiving device 11b, between which a physical communication medium 12 is provided for the transmission of data telegrams 13a, 13b. The sending and receiving devices 11a and 11b can be, for example, network-capable devices (such as personal computers, multimedia devices, servers, routers, network switches) of a home or office network (connected if necessary to an additional Internet) or can be, for example, energy Equipment for automated installations. The physical communication medium 12 can be a wired medium, ie eg copper, coaxial or fiber optic lines, or can be a wireless communication link, eg a radio link according to the WLAN standard. For example, data packets can be transmitted according to the IP protocol.
[0032] For coupling to the physical communication medium 12, the sending device 11a has an interface 14a and the receiving device 11b has an interface 14b. The interfaces 14a and 14b are const...
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The invention relates to a method for transferring data telegrams (13a, 13b) from a transmitter (11a) to a receiver (11b), wherein a priority level is associated with the data telegrams (13a, 13b) to be transferred. The priority level specifies a priority to be considered for the transfer of the particular data telegram (13a, 13b). In order to perform the transfer of data telegrams having different priority levels with relatively less effort and thus even more quickly, a intermediate storage area (17a, 17b) is associated with each priority level in the transmitter (11a), the data telegrams (13a, 13b) are transferred over the physical communication medium (12) by means of different logical data connections (15a, 15b), wherein the number of logical data connections (15a, 15b) corresponds to the number of priority levels, data telegrams (13a) in the intermediate storage area (17a) associated with a lower priority level are transferred by means of the logical data connection (15a) associated with said priority level until at least one data telegram (13b) is present in the intermediate storage area (17b) associated with a higher priority level, and the data telegram (13b) in the intermediate storage area (17b); associated with the higher priority level is transferred by means of the logical data connection (15b) associated with the higher priority level. The invention further relates to a corresponding electrical device for transferring data telegrams.
Description
technical field [0001] The invention relates to a method for transmitting data telegrams from a sending device to at least one receiving device, wherein the data telegrams to be transmitted are assigned a priority which gives priority to be taken into account when transmitting the individual data telegrams Right, so that the data packets with higher priority are preferentially transmitted from the sending device to the receiving device via the physical communication medium connected to the sending device and the receiving device relative to the data messages with lower priority. The invention also relates to a corresponding electrical device, which is designed to transmit data telegrams. Background technique [0002] When data packets are transmitted between electrical devices, due to the limited transmission bandwidth of the physical transmission medium existing between the electrical devices, a delay in data transmission will result. This delay has a particularly critical...
Claims
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Login to View More IPC IPC(8): H04L12/851H04L47/31
CPCH04L47/10H04L45/302H04L47/245H04L47/24H04L47/31
Inventor H.海因S.乔拉H.卡普
Owner SIEMENS AG