Interference suppression method and device for uplink control channel
A control channel and channel interference technology, applied in the field of interference suppression of uplink control channels, can solve the problem of high user access failure rate or call drop rate, and achieve the effects of reducing call drop rate, ensuring call quality, and improving success rate.
Active Publication Date: 2017-03-29
COMBA TELECOM SYST CHINA LTD
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[0006] Embodiments of the present invention provide a method and device for suppressing interference of uplink control channels to solve the problem of co-frequency adjacent cell interference of uplink control channels in LTE networks in the prior art, which may easily cause high user access failure rate or high call drop rate question
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[0020] In the embodiment of the present invention, for each neighboring cell, the interference signal of the neighboring cell is determined according to the uplink control channel parameters of the user equipment that interferes with the neighboring cell, and the interference signal of the neighboring cell is determined according to the air interface signal of the neighboring cell and the interference of the neighboring cell. signal, determine the candidate air interface signal used by the cell to eliminate the interference of the neighbor cell on the uplink control channel of the cell, and suppress the interference of the neighbor cell to the uplink control channel of the cell based on the candidate air interface signal; from each neighbor cell Among the determined candidate air interface signals, the method of selecting a candidate air interface signal as the air interface signal after the interference is eliminated in this cell reduces the interference of the uplink control c...
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The invention relates to the technical field of wireless communications, and especially relates to an interference inhibition method and apparatus for an uplink control channel, for solving the problems of quite high user access failure rate or call dropping rate which are easily caused by same-frequency neighboring cell interference of an uplink control channel in an LTE network in the prior art. The method comprises: according to the parameter of the uplink control channel of user equipment, causing interference to a cell, in a neighboring cell, determining interference signals of the neighboring cell, and according to the air interface signals of the cell and the interference signals of the neighboring cell, determining alternative air interface signals of the cell for eliminating the interference of the neighboring cell; and selecting one alternative air interface signal from all the alternative air interface signals as an air interface signal of the cell after the interference is eliminated, such that the interference of the same-frequency neighboring cell of the uplink control channel in the LTE network is reduced, the interference source of the neighboring cell is quite accurately determined, the success rate of accessing into the network by users is improved, and the conversation quality of the users is guaranteed.
Description
technical field [0001] The present invention relates to the technical field of wireless communication, in particular to an interference suppression method and device for an uplink control channel. Background technique [0002] TD-LTE (Long Term Evolution, time-sharing long-term evolution) networking includes two modes: same-frequency networking and different-frequency networking. For the same-frequency networking, all cells within the coverage of the entire system can use the same frequency band as Users in this cell provide services, so the spectrum efficiency is high. [0003] However, the same-frequency networking technology has strict requirements on the orthogonality between sub-channels, that is, all cells in the TD-LTE system must be time-frequency synchronized, and the base station and users in the cell must also be time-frequency synchronized. frequency synchronization, otherwise it will cause interference. But in fact, there is a problem that the time and frequen...
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IPC IPC(8): H04L25/03
Inventor 刁穗东秦伟崔玲刘旻邓单
Owner COMBA TELECOM SYST CHINA LTD