Synchronous Link Establishment Method and Controller

Abstract

Disclosed are a synchronization link establishment method and a controller. The method includes: receiving a common frequency measurement report reported by user equipment (UE), the common frequency measurement report including a system frame number - connection frame number (SFN - CFN) observation time difference (101); calculating a timing difference / timing differences for one or more cell groups according to the SFN - CFN observation time difference (102); saving the timing difference (103); when the first UE performs pilot hard handover or radio resource control (RRC) connection establishment and the first UE establishes a plurality of links at a target frequency point, searching in the saved record for a timing difference between a first cell to which a first link established by the first UE belongs and a second cell group to which a second link to be established belongs and calculating a timing parameter for the second cell, and when there are more than two links to be established, calculating timing parameters for a plurality of links to be established according to a method for calculating the timing parameter for the second link (104). The present invention is applicable in scenarios where inter-cell synchronization timing information is required to be acquired, such as cell handover, RRC connection establishment, etc.

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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