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Method and device for full-duplex channel interference control

A technology of network equipment and interference information, applied in the field of communication, can solve the problems of high cost and complex realization of self-interference elimination

Active Publication Date: 2019-10-15
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Since the implementation of self-interference cancellation is relatively complicated, the cost of implementing it on the terminal side is too high, so a common compromise is to only implement full-duplex on the network device, and implement the traditional half-duplex on the terminal side.

Method used

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  • Method and device for full-duplex channel interference control
  • Method and device for full-duplex channel interference control
  • Method and device for full-duplex channel interference control

Examples

Experimental program
Comparison scheme
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Embodiment 1

[0056] Generally, for controlling inter-terminal interference in a cell, the figure 2 Take terminal 1 (downlink terminal) in the example as an example, it may be interfered by terminal 2 (uplink terminal), and may be paired with terminal 2. A network device (in this application, a network device refers to a base station or a device having a function similar to a base station or including a function similar to a base station) may be configured as follows: image 3 The shown process obtains the interference situation between users, performs pairing of terminals, and schedules time-frequency resources:

[0057] Step 310: The uplink terminal (here, terminal 2 is taken as an example) sends an uplink reference signal on the time-frequency resource allocated by the network device (here, network device 1 is taken as an example). The uplink reference signal here can be an uplink RS (Reference Signal) in the prior art, such as demodulation pilot (English name: Demodulation RS), soundi...

Embodiment 2

[0077] In the first embodiment, only the interference of the uplink terminal in the same cell to the downlink terminal is considered, but when the downlink terminal is at the edge of the cell, it is better to consider the interference of the uplink terminal in the adjacent cell. still with figure 2 As an example, assume that terminal 1 and terminal 2 are located in cell 1, terminal 3 is located in cell 2, network device 1 provides services for terminals in cell 1, and network device 2 provides services for terminals in cell 2. Since terminal 1 is at the edge of cell 1, terminal 1 may be interfered by adjacent terminals in cell 1 as well as adjacent terminals in cell 2. Figure 5 A flow chart for considering uplink terminal interference in adjacent cells is given. It can be seen that, similar to Embodiment 1, terminal 2 sends an uplink RS to network device 1 in step 511 in cell 1, while terminal 3 is in cell 2 Send uplink RS to network device 2 in step 512, network device 1 d...

Embodiment 3

[0079] In the second embodiment, only the uplink and downlink of the downlink terminal (terminal 1) reside on the same network device, but at the edge of the cell, with the evolution of the network architecture, the uplink and downlink of the same terminal may belong to different network equipment. still with figure 2 Take the terminal 1 in the example as an example, assuming that its downlink is in cell 1, and its uplink (including feedback and transmission) is in cell 2. At this time, the whole process is slightly adjusted compared with the second embodiment. The schematic diagram is shown in Image 6 , it can be seen that, with Example 2 and Figure 5 In comparison, the difference is that in step 640, the position information of the N time-frequency resources that meet the requirements fed back by the terminal 1 is sent to the network device 2, and accordingly, in step 650, the network device 2 sends the network device 1 through the return mechanism ( X2 interface, micro...

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Abstract

This invention discloses a method and equipment for controlling full-duplex channel interference. A downlink terminal determines a suitably matched time-frequency resource location on the basis of signal strength detection of uplink pilot frequency and sends feedback to network equipment. The network equipment determines an uplink terminal that is suitably matched with the downlink terminal on the basis of the relation between the time-frequency resource location and the uplink terminal as well as the feedback signal from the downlink terminal, thereby effectively controlling interference from the uplink terminal to the downlink terminal.

Description

technical field [0001] The embodiments of the present application relate to the field of communication technologies, and more specifically, relate to a method for controlling interference between terminals by using uplink pilot detection in full-duplex wireless communication. Background technique [0002] The current wireless communication technology has developed to the Long Term Evolution (English full name: Long Term Evolution; English abbreviation: LTE) system, with the attached figure 1 For example, the existing LTE system includes multiple cells, and each cell has a network device 11 and multiple terminals 12, and the network device 11 sends public control information and data to the terminal 12, and is used to detect public control information and data reference signals. Generally, in order to prevent mutual interference, the network device sends signals to the terminal and the terminal sends signals to the network device using independent resources. This independent...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04J11/00
Inventor 李荣鹏陈雁权威吴艺群
Owner HUAWEI TECH CO LTD