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Resource allocation method under high-speed rail train-mounted base station communication architecture

A resource allocation, high-speed rail technology, applied in digital transmission systems, multi-frequency code systems, electrical components, etc., can solve problems such as reducing system performance, and achieve the effect of optimizing system performance and improving system capacity

Inactive Publication Date: 2014-05-21
BEIJING JIAOTONG UNIV
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Problems solved by technology

[0005] From the above analysis, it can be seen that the bottleneck of the vehicle-based communication architecture in the high-speed rail scenario is the BS-MBS link, and the ICI generated by Doppler in this link will reduce system performance

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  • Resource allocation method under high-speed rail train-mounted base station communication architecture
  • Resource allocation method under high-speed rail train-mounted base station communication architecture
  • Resource allocation method under high-speed rail train-mounted base station communication architecture

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Embodiment Construction

[0030] In order to make the above objects, features and advantages of the present invention more comprehensible, the present application will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0031] Refer to attached figure 2 , which shows a schematic flow chart of the resource allocation method under the communication architecture of the high-speed rail vehicle-mounted base station of the present invention, including:

[0032] Step 201: Establish a system model and calculate an objective function.

[0033] An OFDMA system under the communication architecture of a high-speed rail vehicle-mounted base station contains N subcarriers and K users. The BS on the ground communicates with several users inside the car through the MBS on the top of the car. It is assumed that the instantaneous gain of the channel remains constant during two consecutive hops. In the first hop, the BS sends the signal to the MBS, taking car...

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Abstract

The invention relates to a resource allocation method under high-speed rail train-mounted base station communication architecture. The resource allocation method aims at the train-mounted base station communication architecture, and is characterized by maximizing capacity of a communication system through resource allocation under an OFDMA (orthogonal frequency division multiple access) modulation mode. The resource allocation method under the high-speed rail train-mounted base station communication architecture mainly includes: establishing a capacity function under the high-speed rail train-mounted base station communication architecture; allocating subcarriers to a plurality of users; achieving subcarrier pairing for a base station end and a train-mounted mobile base station end; respectively allocating subcarrier power to the base station end and the train-mounted base station end. The resource allocation method under the high-speed rail train-mounted base station communication architecture is of great significance in system performance optimization under high-speed rail scene communication architecture.

Description

technical field [0001] The present invention relates to the technical field of wireless mobile communication, in particular to a resource allocation method under the communication architecture of high-speed rail vehicle-mounted base stations Background technique [0002] As a fast, convenient and green public transport, the high-speed railway with a speed of 300km has developed rapidly all over the world and has achieved remarkable results. With the development of high-speed railways, the demand for wireless data transmission on high-speed railways is also getting higher and higher. On the one hand, the ever-increasing railway safety control information needs to be transmitted between the train and the ground; on the other hand, passengers hope to enjoy real-time information services during the journey, such as checking emails, downloading files, and video conferencing. According to statistics, the data transmission rate requirement on the train is 37.5Mbps, and it will rea...

Claims

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Application Information

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IPC IPC(8): H04L5/00H04L27/26
Inventor 邱佳慧林子怀陶成谈振辉刘留刘扬
Owner BEIJING JIAOTONG UNIV
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