Heterogeneous network base station triggered switching method based on common control carrier (CCC) frame

Abstract

The invention relates to a heterogeneous network base station triggered switching method based on a common control carrier (CCC) frame, in particular to a source base station triggered switching scheme and a target base station triggered switching scheme based on CCC frame time-frequency resource configuration and belongs to the technical field of wireless communication. According to the method, a time-frequency resource configuration method of the CCC radio frame is firstly established, interface time delay of interactive control information among base stations is eliminated, then source base station and target base station triggered switching schemes based on the configuration are respectively provided, when a mobile terminal communicates with the source base station before switching trigger, the periodical measurement for reference signal received power (RSRP) and received signal strength indicator (RSSI) of surrounding base stations is not required, the prediction is performed according to grades of services, and a base station with the optimal grade of service is selected as a target base station to be switched under the condition that the received RSRP and reference signal received quality (RSRQ) of the target base station are ideal and can support user transfer communication. By means of the heterogeneous network base station triggered switching method based on the CCC frame, the energy consumption of the mobile terminal is reduced, and the performance gain is improved.

Description

technical field [0001] The invention relates to a handover method triggered by a base station of a heterogeneous network based on a CCC frame, in particular to a handover scheme triggered by a source base station and a handover scheme triggered by a target base station based on CCC frame time-frequency resource configuration, and belongs to the technical field of wireless communication. Background technique [0002] In the process of high-speed and widespread development of wireless communication technology, users' demands for high-speed wireless networks and expectations for service types are increasingly ardent. In order to meet the higher system performance index proposed by the next generation mobile communication, heterogeneity becomes one of the main characteristics of the future wireless network environment. The so-called heterogeneity refers to the differences in the structure, function, and properties of the various parts that make up the system. 3GPP proposed the ...

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Problems solved by technology

[0013] Although the traditional handover scheme is widely used, it cannot fully exploit the performance advantages of the heterogeneous network. Therefore, it is necessary to invent a new handover scheme that complements the heterogeneous network to solve the problems in the traditional handover scheme: first, use X2 in the handover or S1 interface to exchange control information between base stations, which will generate a large delay; secondly, the traditional handover scheme is based on the handover triggered by the mobile terminal, that is, before the handover is triggered, the communicating mobile terminal needs to periodically measure the source base station The downlink RSRP and RSSI of the adjacent cell base stations, so the energy consumption of the mobile terminal is relatively large, which is not conducive to the user's service experience; finally, compared with the target base station with smaller RSRP and RSRQ, the target base station with larger RSRP and RSRQ may not be able to Provides the best communication performance to the mobile terminal, thus limiting the performance gain of the system

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