Wireless communication system, transmission method and apparatus

Abstract

The embodiment of the invention discloses a wireless communication system. The system comprises relay nodes used for forwarding the data information between at least two base stations and relevant terminals inferior to the base stations according to the physical resource information required for the data forwarding. The embodiment of the invention also discloses a relay transmission method and a relay transmission device. In a cellular network, a relay station (RS) for serving relevant cells is built at the periphery of at least two cells, the information between a plurality of base stations (BSs) and relevant terminals are forwarded by use of the RS, the plurality of BSs or RSs inferior to the plurality of BSs are cooperated by use of the RS, and each BS and each RS are scheduled at the systemic angle, thereby avoiding the interference among the cells where the different BSs are located. Specifically, on the premise of not increasing the terminal complexity, the wireless communication system effectively eliminates the interference at the periphery of the cells, increases the cell coverage and the cell marginal capacity, and optimizes the system performance.

Description

technical field [0001] The invention relates to the field of communication, including a wireless communication system for realizing cooperative relay cellular, a relay transmission method and a device. Background technique [0002] With the development of communication technology, out of the consideration of frequency resource reuse, system resource allocation management and mobile user management, most wireless access systems generally adopt cellular structure as the network organization structure. However, with the introduction of wireless broadband transmission technology, the performance of cell edge users in the same frequency network has become the bottleneck of the cellular structure system. [0003] figure 1 Shown is a structural schematic diagram of a cellular structure system in the prior art. [0004] A cell includes a base station (basestation, BS) and several mobile stations (mobilestation, MS). The BS sends information to the MS or receives information sent f...

AI Technical Summary

Problems solved by technology

Power control technology can significantly reduce interference, but it cannot really eliminate interference; FFR technology reduces spectrum utilization efficiency; interference randomization can only suppress interference but cannot truly eliminate interference

And none of the above techniques can improve the performance degradation caused by path loss

Due to inter-cell interference, even if the power of each base station is increased, it is difficult to improve the user performance at the edge of the cell, so that the system capacity cannot be effectively improved

[0007] In addition, the use of complex interference cancellation technologies on the terminal, such as the use of complex interference suppression receivers or the configuration of multiple antennas, can reduce inter-cell interference to a certain extent, but the increase in terminal complexity not only brings More importantly, it will greatly increase the unit cost of the terminal. From the perspective of the entire mobile communication system, due to the huge number of terminals, the increase in the unit cost will greatly increase the cost of the entire system, thereby increasing the operating cost of the system. , which equipment manufacturers and operators do not want to see

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