Spectrum allocation method applied to urban railway traffic vehicle-ground integrated bearing system
An urban rail transit and carrying system technology, which is applied in the field of spectrum allocation of the urban rail transit vehicle-ground integrated carrying system, can solve the problems of restricting the number of users, wasting manpower and material resources, and high costs, and achieves the effect of satisfying service quality.
Active Publication Date: 2017-06-23
BEIJING JIAOTONG UNIV
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Problems solved by technology
Mutually independent network construction schemes, the frequency allocation in the frequency band adopts a fixed allocation method, and the channel is assigned to a certain system user for a long time. When a channel is busy, other users can only wait, which often causes users on this channel to scramble or In the event of congestion, the communication quality cannot be guaranteed; and when the channel is idle, other system users cannot use the channel for communication
This is undoubtedly a waste of frequency resources, and also restricts the further development of the number of users
[0010] (2) Long investment and construction time
The construction time of the system is extended several times
[0012] (3) Maintenance is difficult and costly
This will waste a lot of manpower and material resources
[0014] (4) The system lacks scalability
Such a design can also ensure the security of the CBTC system, but the allocation of wireless resources will become unreasonable
Method used
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[0037] Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary only for explaining the present invention and should not be construed as limiting the present invention.
[0038] Those skilled in the art will understand that unless otherwise stated, the singular forms "a", "an", "said" and "the" used herein may also include plural forms. It should be further understood that the word "comprising" used in the description of the present invention refers to the presence of said features, integers, steps, operations, elements and / or components, but does not exclude the presence or addition of one or more other features, Integers, steps, operations, elements, components, and / or groups thereof. It will be understoo...
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The invention provides a spectrum allocation method applied to an urban railway traffic vehicle-ground integrated bearing system. The method mainly comprises steps of decomposing the physical wireless access point along the urban railway system into a plurality of virtual wireless access points; and allocating one of the virtual wireless access points in each service in the urban railway traffic vehicle-ground integrated bearing system, and allocating the spectrum of the physical wireless access point according to the access terminal information of each service to each virtual access point corresponding to each service. The method integrates various urban railway traffic services into the same network by using the network virtualization technology, and each kind of service is connected to different virtual wireless access points. A center spectrum controller can allocate each physical wireless access point to multiple virtual access points according to the access terminal number of each virtual access point, the terminal service requirement and the terminal channel condition.
Description
technical field [0001] The invention relates to the technical field of train operation control, in particular to a frequency spectrum allocation method applied to an urban rail transit vehicle-ground integrated bearing system. Background technique [0002] With the acceleration of urbanization in our country, urban traffic is facing a severe situation. Traffic congestion and air pollution are becoming more and more serious, seriously affecting the normal order of urban economic and social activities. The development of large-capacity, fast, punctual, and safe urban rail transit has become the first choice for large and medium-sized cities in my country. This is a positive response to the national strategic needs and the improvement of the travel quality of ordinary people. Beijing has opened 527 kilometers of rail transit lines, with an average daily passenger flow of over 10 million passengers. The rail transit networks of many cities in China have begun to take shape and...
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IPC IPC(8): H04W72/04
CPCH04W72/0453H04W72/53
Inventor 朱力赵红礼蒋海林唐涛
Owner BEIJING JIAOTONG UNIV