Unlock instant, AI-driven research and patent intelligence for your innovation.

Coordination method for time domain interference in hybrid network

A technology of time-domain interference coordination and coordination methods, applied in electrical components, wireless communication, multi-frequency code systems, etc., to achieve the effect of utilizing system time-frequency resources and reducing interference

Inactive Publication Date: 2012-04-04
SHANGHAI RES CENT FOR WIRELESS COMM
View PDF4 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The scheduling information for data transmission on M+1 subframes can be completed by subframe M. At present, the concept of cross-frame scheduling has been proposed in the literature, but it is only applicable to R10 users.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Coordination method for time domain interference in hybrid network
  • Coordination method for time domain interference in hybrid network
  • Coordination method for time domain interference in hybrid network

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] From the exchange of subframe information between the base station of the interfered cell and the base station of the interfered cell, to the exchange of subframe and subband information between the two base stations, the utilization of resources by the base station of the interfered cell has been greatly improved. But from image 3 It can also be seen that since the base station of the interfered cell does not know the length information of the PDCCH in subframe N+1 of the base station of the interfered cell, in order to protect the reception of the PDCCH by the victim user, it can only be avoided according to the maximum possible length of 3 OFDM symbols of the PDCCH.

[0023] This embodiment provides a time-domain interference coordination method in a hybrid network. The details of the method are as follows: in addition to exchanging the subframe number and subband information between the base station of the interfered cell and the base station of the interfered cell,...

Embodiment 2

[0025] This embodiment provides another time-domain interference coordination method in a hybrid network: between the base station of the interfered cell and the base station of the interfered cell, in addition to exchanging the subframe number and subband information, the subframe control information part of the resource to be protected is exchanged. position information, so that the base station of the interfering cell can just vacate the resource corresponding to the resource to be protected in the subframe control information part, so as to protect the reception of the PDCCH by the victim user.

[0026] like Figure 5 As shown, when the base station of the interfered cell knows the position of the resource to be protected in the control information part of the subframe N+1 (the network cable filling part of the subframe N+1 in the figure), the base station of the interfered cell can vacate it to protect the victim user For the reception of PDCCH and PDSCH ( Figure 5 In t...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a coordination method for time domain interference in a hybrid network, which includes that an interfered neighborhood base station firstly informs an interfering neighborhood base station about subframe numbers occupied by subordinate users, sonband positions in subframes used by the subordinate users to receive downlink data and length information of a physical downlink control channel (PDCCH) in the subframes or position information of resources to be protected in a subframe control information part before the subordinate users of the interfered neighborhood base station enter an interfering neighborhood so that the interfering neighborhood base station can perform collision avoidance actions in advance. The length information of the PDCCH about subframe control channels or the position information of resources to be protected in the subframe control information part are added in exchange information among different base stations, so that the interfering neighborhood base station can protect control channels and data channels of users in the interfered neighborhood and simultaneously take full advantage of available time-frequency resources to perform data transmission of local neighborhoods. The coordination method not only reduces interference the users in the interfered neighborhood receive, but also simultaneously takes full advantage of system time-frequency resources of the interfering neighborhood.

Description

technical field [0001] The invention belongs to the technical field of wireless communication, and relates to a time-domain interference coordination method in a hybrid network. Background technique [0002] In the future mobile communication system, there is an application scenario of a hybrid network, that is, within the coverage of a well-planned cellular network formed by a macro base station, there are multiple low-power base stations LPN coverage. In this way, in some areas, the macro base station and the LPN are repeatedly covered to form a multi-layer network. [0003] The introduction of the low-power base station LPN in the hybrid network breaks the user's attribution principle in the single-layer cellular network, resulting in a completely different interference scenario in the hybrid network from the original single-layer cellular network. Taking the LPN as a CSG (Closed Subscriber Group) home base station HeNB (Home eNB) as an example, figure 1 The interferenc...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): H04W72/12H04W74/08H04L27/26
Inventor 杨馨朱元萍徐景曾媛
Owner SHANGHAI RES CENT FOR WIRELESS COMM