Method and device for combining adjacent frequency systems

A technology of combining and adjacent frequency, applied in the field of communication, can solve the problem that adjacent frequency combining cannot meet the isolation requirements, and achieve the effect of reducing interference between combined systems and reducing excessive occupation.
CN106412920BActive Publication Date: 2019-09-20CHINA UNITED NETWORK COMM GRP CO LTD
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Patent Information

Authority / Receiving Office
CN Β· China
Patent Type
Patents(China)
Current Assignee / Owner
CHINA UNITED NETWORK COMM GRP CO LTD
Publication Date
2019-09-20

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Abstract

The invention provides a method and a device for combining adjacent channel systems, relates to the field of communication, and aims to enable an isolation bandwidth between the adjacent channel systems to meet an inter-system isolation requirement and realize combination of the adjacent channel systems. The method comprises the following steps: determining a minimum isolation bandwidth needed by combination of a first communication system and a second communication system to be combined, a protection bandwidth of the first communication system and a protection bandwidth of the second communication system; calculating a frequency deviation value according to the three determined numerical values; determining a frequency offset of the first communication system and a frequency offset of the second communication system according to the frequency deviation value; determining combination cut-off frequencies of the first communication system and the second communication system according to the frequency offsets of the first communication system and the second communication system and an adjacent channel point between the first communication system and the second communication system; and using a bandwidth between the combination cut-off frequencies of the two communication systems as the isolation bandwidth between the two communication systems to perform combination.
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Description

technical field

[0001] The present invention relates to the communication field, in particular to a method and device for combining adjacent frequency systems. Background technique

[0002] With the rapid development of mobile communications, wireless spectrum resources are becoming increasingly scarce, and frequency-adjacent frequency allocation of wireless networks of different systems has become a common phenomenon. However, as base stations become denser and the cost of obtaining site and space resources is higher and higher, different systems may need to co-exist, such as: 2G system and 4G system. Therefore, the problem of combining adjacent frequency systems occurs.

[0003] In the co-existence scenario of different systems, in order to avoid mutual interference between different systems, different systems must have isolation bandwidth. Such as 3GPP and other agreements stipulate that different systems need an isolation requirement of more than 30dB, and usually need...

Claims

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