System and method for emergency communication transmission time slot allocation based on QoS in smart power grid
A technology of emergency communication and smart grid, applied in the field of communication, can solve problems such as inaccessibility of equipment, large number of equipment, waste of resources, etc., and achieve the effect of ensuring QoS and avoiding data congestion
Active Publication Date: 2014-03-26
SHANGHAI INST OF MICROSYSTEM & INFORMATION TECH CHINESE ACAD OF SCI +2
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Problems solved by technology
[0006] The purpose of the present invention is to provide a system and method for allocating time slots for emergency communication transmission based on quality of service in the smart grid, so as to solve the problem of the prior art when an emergency occurs due to the large number of devices required to be connected, and the devices are always delayed. Unable to access, resulting in a great waste of resources
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Embodiment 1
[0047] In this embodiment, 10 smart terminals and 2 bits in the small time slot are taken as an example, that is, N=10 and M=2. Table 1 shows the actual status and the required information transmission space corresponding to the information status of each smart terminal. M=2, there are 4 information states.
[0048]
[0049]
[0050] Table 1
[0051] As shown in Table 1, three types of information need to be transmitted. 00 means that no information data is sent by the smart terminal at this moment; 01 means that the smart terminal sends periodic information data (data type III) at this moment, with low delay requirements and a large amount of data; 10 means that the smart terminal sends at this moment Information data type II, the delay requirement is not high, the amount of data is small; 11 indicates that the emergency data is sent at this moment, the intelligent terminal needs urgent data (data type I), the delay requirement is high, and the amount of data is small. Once an ...
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The invention provides a system and method for emergency communication transmission time slot allocation based on QoS in a smart power grid. The system and method are applied to the smart power grid. The method comprises the steps that N intelligent terminals apply to a data center for data time slots through an uplink frame control portion and the data time slots are used for transmitting an uplink data portion, wherein N is a positive integer; the length of a downlink frame control response portion is modified by the data center according to the uplink frame control portion and after modification, a downlink data portion is fed back to each intelligent terminal; the downlink frame control response portion is read by each intelligent terminal and the uplink data portion is transmitted according to the downlink frame control response portion. Each intelligent terminal can request sending space from the data center through an uplink frame and a request is responded and managed by the data center through a downlink frame. Under emergency circumstances, each intelligent terminal can give an alarm to the data center through a frame header control portion so that occurrence of an emergency condition can be indicated. According to self-features of the smart power grid, transmission of part repeated data can be cancelled by the data center and data congestion caused by access of a larger number of intelligent terminals is avoided.
Description
Technical field [0001] The present invention relates to the field of communication technology, and in particular to a system and method for allocating time slots for emergency communication transmission based on QoS (Quality of Service) in a smart grid. Background technique [0002] As a modern power grid infrastructure, smart grids can improve transmission efficiency through automated control and modern communication technologies, improve the reliability and safety of transmission networks, and integrate renewable and alternative energy sources. In the smart grid, reliable and timely communication means can realize the online status monitoring, diagnosis and protection of the power system, thereby to a large extent alleviating the limitation of the grid capacity and avoiding equipment failure, natural accidents and disasters. Intelligent and low-cost grid monitoring technology has become an indispensable condition for maintaining the safety, reliability, high efficiency and norm...
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IPC IPC(8): H04W72/04H04W48/06H04W48/10
Inventor 谭冲吴亦衎俞凯马林郭经红卜智勇
Owner SHANGHAI INST OF MICROSYSTEM & INFORMATION TECH CHINESE ACAD OF SCI