Building method and controller of synchronization link

Abstract

The invention discloses a building method and a controller of a synchronization link. The method includes that the same frequency measuring report reported by user experience (UE) is received, and the same frequency measuring report comprises single frequency network (SFN)-connection frame umber (CFN) observation time difference; timing difference of one or a plurality of cell groups is calculated according to the SFN-CFN observation time difference; the timing difference is stored; and when first UE conducts pilot frequency hard handover switch or radio resource control (RRC) connection build and the first UE builds a plurality of links on target frequency points, the timing difference of cell groups of a first cell where the first link built by the first UE belongs to and a second cell where the second link to be built by the first UE belongs to is found from the stored records, timing parameters of the second cell are calculated, and when links needing building are more than two in number, the timing parameters of the plurality of to-be-built links are calculated according to the calculating method of the timing parameters of the second link. The building method and the controller of the synchronization link are suitable for cell switching, RRC connection build and other scenes needing to obtain synchronous timing information among cells.

Description

technical field [0001] The invention relates to the technical field of communication, in particular to a method for establishing a synchronous link and a controller. Background technique [0002] Wireless communication provides the basis for the realization of mobile communication, and the effective coverage of wireless network determines the service area of ​​mobile communication. Since the antenna (base station) for transmitting wireless signals cannot be infinitely high, the transmission power cannot be infinitely large, and the power of mobile phones is even more limited, so the service range (cell) of a single antenna (base station) is very limited. To realize nationwide wireless coverage, the system must be composed of many cells. [0003] When a UE (User Equipment, user equipment) is in a call, if it moves from one cell (cell A) to another cell (cell B), signal attenuation, channel interference increase, etc. may occur, which will affect the call quality of the user....

AI Technical Summary

Problems solved by technology

[0005] When the UE performs inter-frequency hard handover or RRC (Radio Resource Control, radio resource control) connection establishment phase, if it is the first time to establish a link on the target frequency point, only one link can be established; To establish two links at the same time, because there are no timing measurement parameters, the network cannot guarantee the timing synchronization of the two established links, and cannot obtain the combining gain of macro diversity

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