Method and device for alleviating uplink interference
A technology that is subject to interference and interference levels, applied in the field of communication, can solve problems such as interference
Inactive Publication Date: 2018-12-11
POTEVIO INFORMATION TECH CO LTD
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Problems solved by technology
eNB1 is closer to UE1, and eNB2 is farther away from UE1. Due to the delay caused by the transmission distance of eNB2, the downlink data of eNB2 interferes with the uplink data of UE1, such as figure 2 shown
eNB1 receives the uplink data of UE1 and at the same time receives the downlink data sent by eNB2 to its UE, thus causing interference
Method used
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[0040] In order to make the object, technical solution, and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and examples.
[0041] Such as image 3 As shown, an embodiment of the present invention provides a method for mitigating uplink interference, and the method includes the following steps:
[0042] Step 31. Select an uplink subframe, and perform resource division in the frequency domain and time domain of the uplink subframe according to a certain granularity; periodically measure the uplink interference power of each granularity resource with a predetermined sampling period;
[0043] Wherein, the division of granular resources may be one or more resource blocks (RB) under one or more Orthogonal Frequency Division Multiplexing (OFDM) symbols, or one or more resources under one or more OFDM symbols Particles (RE).
[0044] In the present invention, since the uplink in...
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The invention discloses a method for relieving uplink interference. The method comprises the steps of selecting an uplink subframe, and carrying out resource partitioning on a frequency domain and a time domain of the uplink subframe according to certain granularity; periodically measuring the uplink interference power of each granularity resource at a predetermined sampling period; carrying out statistics in a predetermined statistical period as for the uplink interference power of each granularity resource, and quantifying a statistical value so as to form an interference grade; determining whether an uplink signal is subjected to strong interference or not according to the interference grade of each granularity resource in time-frequency domain resources occupied by the uplink signal of the uplink subframe, and if the uplink signal is subjected to strong interference and the time-frequency domain resources occupied by the uplink signal have a spare frequency domain resource with weak interference, configuring the uplink signal to the position of the spare frequency domain resource with weak interference. The invention further discloses a device for relieving the uplink interference. By adopting the method and the device disclosed by the invention, the uplink interference can be effectively reduced.
Description
technical field [0001] The present invention relates to communication technology, in particular to a method and device for alleviating uplink interference. Background technique [0002] The frame structure of LTE system TDD (Time Division Duplex, time division duplex) mode is as follows figure 1 shown. In this frame structure, a 10ms radio frame is divided into two half-frames, and each half-frame is 5ms long. Each half frame consists of 5 subframes with a length of 1 ms. The role of each subframe is shown in Table 1, where D represents a downlink subframe used to transmit downlink signals. U represents an uplink subframe for transmitting uplink signals. S represents a special subframe, including three special time slots, namely DwPTS (DownlinkPilot Time Slot, downlink pilot time slot), GP (Guard Period, guard interval) and UpPTS (Uplink PilotTime Slot, uplink pilot time slot). In an actual system, the uplink and downlink configuration index will be notified to the mobi...
Claims
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IPC IPC(8): H04L5/00
Inventor 冯绍鹏王丽郭晨
Owner POTEVIO INFORMATION TECH CO LTD