A method and device for realizing digital remote communication in the base station system
A base station system and digital technology, applied in the field of mobile communication systems, can solve the problems of limited dynamic range, small coverage, poor frequency selection, etc., and achieve the effects of large dynamic range, high suppression ability and good frequency selection performance.
Inactive Publication Date: 2008-09-10
SHENZHEN GRENTECH CO LTD
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Problems solved by technology
[0005] The technical problem to be solved by the present invention is to provide a device with good frequency selection, large dynamic range, and high power in view of the defects of the prior art such as poor frequency selection, limited dynamic range, low power, and small coverage. A method and device for realizing digital telemetry in a base station system with large coverage and flexible networking mode
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[0038] Such as figure 1As shown, in the first embodiment of the present invention, a method and device for realizing digital telemetry in a base station system, the system is composed of a base station 1, an access device 2 and a coverage device 3, wherein the base station 1 and the access device 2 The signal transmission between them is transmitted through the first transmission medium 4, and the signal transmission between the access device 2 and the coverage device 3 is transmitted through the second transmission medium 5; the communication between the coverage device 3 and the mobile terminal in its coverage area It is carried out by means of radio frequency. The aforementioned access device 2 is generally also referred to as a near-end, and the aforementioned coverage device 3 is generally also referred to as a remote end. In this embodiment, the base station system only includes one access device 2 and one coverage device 3; of course, in the present invention, if neces...
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The invention relates to a method for realizing digital zoom-out in a base station system, which comprises the steps as follows: received radio-frequency signals are changed to simulated intermediate-frequency signals; the simulated intermediate-frequency signals are changed to digital signals so as to obtain baseband signals; the baseband signals are processed and transmitted by a second transmission medium; a device receives the processed signals by the second transmission medium and then changes the received signals in sequence into digital intermediate-frequency signals, the simulated intermediate-frequency signals and radio-frequency signals so as to be sent. The invention also relates to a device for realizing the method. By applying the method for realizing digital zoom-out in the base station system and the device thereof, the following advantages are provided: the base station system which uses the method and the device of the digital zoom-out has good frequency selection performance, good adjacent channel rejection capacity, and wide dynamic range, and can realize the overlay with large power. Furthermore, a networking mode thereof is flexible.
Description
technical field [0001] The present invention relates to a mobile communication system, more specifically, to a method and device for realizing digital telemetry in a base station system. Background technique [0002] Wireless network optimization and network coverage play an increasingly significant role in mobile communication systems, and repeaters are widely used because of their low cost and short construction period. At present, the wireless signal of the repeater mostly adopts analog transmission technology, but the superposition of inherent noise of this technology makes it difficult to solve the coverage problem of large capacity and large dynamic range when the transmission distance is long; there are also a few digital transmission technology , such as the implementation method of the mobile digital optical fiber repeater system described in the "Realization Method of Mobile Communication Digital Optical Fiber Repeater System" with the Chinese patent application nu...
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Login to View More IPC IPC(8): H04B7/15H04B7/26H04Q7/30
Inventor 刘咏华吴中汉曾宪祥
Owner SHENZHEN GRENTECH CO LTD