Frequency spectrum sharing method for GSM (Global System for Mobile Communication) system and LTE (Long Term Evolution) system and systems thereof

A technology of GSM system and shared spectrum, applied in the field of shared spectrum between GSM system and LTE system, can solve the problems of poor smoothness and low spectrum usage efficiency, and achieve the effect of smooth transition

Active Publication Date: 2011-07-06
ZTE CORP
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Problems solved by technology

The current solution is to deploy the LTE system on the vacated continuous spectrum after a relatively large continuous spectrum (at least 1.4MHz) is vacated as the number of GSM users decreases, but this approach is not efficient in the use of spectrum , poor smoothness

Method used

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  • Frequency spectrum sharing method for GSM (Global System for Mobile Communication) system and LTE (Long Term Evolution) system and systems thereof
  • Frequency spectrum sharing method for GSM (Global System for Mobile Communication) system and LTE (Long Term Evolution) system and systems thereof
  • Frequency spectrum sharing method for GSM (Global System for Mobile Communication) system and LTE (Long Term Evolution) system and systems thereof

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Embodiment Construction

[0029] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention clearer and clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0030] In order to realize that the GSM system and the LTE system share the same spectrum, the technical solution of the present invention is as follows:

[0031] Since the signal power spectral density of the GSM system (such as transmitting 20W power at a frequency of 200KHz) is much greater than the signal power spectral density of LTE (such as transmitting 20W power on a 10MHz bandwidth), the interference of the LTE system to the GSM system can be ignored , but on the contrary, the interference of the GSM system to the LTE system is a very strong in...

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Abstract

The invention relates to a frequency spectrum sharing method for a GSM (Global System for Mobile Communication) system and an LTE (Long Term Evolution) system. The method is realized by following steps: a fixed channel of the LTE system of a cell is dodged when distributing GSM system frequency points of the cell and an adjacent cell capable of generating interference to the cell; frequency domain resources which are indicated by PDSCH (Physical Downlink Shared Channel) and PUSCH (Physical Uplink Shared Channel) of the LTE system and distributed to users, and GSM system frequency points of the cell and the adjacent cell capable of generating interference to the cell are not on a same frequency resource; and when the GSM system frequency points of the cell and the adjacent cell capable of generating interference to the cell are distributed for the PCFICH (Physical Control Format Indicator Channel) and PHICH (Physical Hybrid Indicator Channel) of the LTE system, two channels on the LTE system are dodged, or the LTE system distributes proper CellID to dodge the GSM system frequency points of the cell and the adjacent cell capable of generating interference to the cell. The invention also provides a shared frequency spectrum system. By the method and the system of the invention, the frequency spectrum use efficiency can be improved, and simultaneously the GSM system can be transitioned to the LTE system in a smoothing manner.

Description

technical field [0001] The invention relates to the field of mobile wireless communication, in particular to a method and a system for sharing spectrum between a GSM system and an LTE system. Background technique [0002] GSM (Global System for Mobile Communications) system is a narrowband communication system with a bandwidth of about 200KHz. When using the GSM system to form a cellular network, in order to overcome co-frequency interference, different frequency points can be used between adjacent cells that may interfere. The specific method is that a total of several continuous frequency points can be used in GSM networking (for example, these continuous frequency points occupy a 10MHz bandwidth), but each cell only uses one or a few of them, and at the same time, ensure that the adjacent cells that may interfere are used The frequency point of the cell is inconsistent with the frequency point used by this cell, thereby reducing co-channel interference. The LTE (Long Te...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W16/14
CPCH04L5/00H04L5/0053H04W72/1215H04W16/14H04L5/0044H04W72/0453H04W28/048H04L5/0073H04W16/02
Inventor 向际鹰郁光辉胡留军陈诗军吴岩巍何赵钢赵先明谢大雄
Owner ZTE CORP
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