Joint uplink and downlink load distribution method based on reinforced inter-cell interference coordination

A technology of inter-cell interference and load distribution, applied in network traffic/resource management, electrical components, wireless communication, etc., can solve problems such as low user transmission rate, no consideration of asymmetric channel access, no time resource allocation, etc., to achieve Improve system capacity, increase user transmission rate, and improve the effect of system capacity

Inactive Publication Date: 2014-07-30
XIDIAN UNIV
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Problems solved by technology

[0007] The purpose of the embodiments of the present invention is to provide a joint uplink and downlink load allocation method based on enhanced inter-cell interference coordination, which aims to solve the existing ABS-based access algorithm that does not consider the asymmetric channel access of uplink and downlink, The user transmission rate is low, and there is no problem of effectively allocating time resources for uplink and downlink transmission

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  • Joint uplink and downlink load distribution method based on reinforced inter-cell interference coordination
  • Joint uplink and downlink load distribution method based on reinforced inter-cell interference coordination
  • Joint uplink and downlink load distribution method based on reinforced inter-cell interference coordination

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[0022] In order to make the object, technical solution and advantages of the present invention more clear, the present invention will be further described in detail below in conjunction with the examples. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0023] The application principle of the present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0024] Such as figure 1 As shown, the joint uplink and downlink load allocation method based on enhanced inter-cell interference coordination in the embodiment of the present invention includes the following steps:

[0025] S101: Construct a two-layer TDD-LTE heterogeneous cellular network system, which consists of macro base stations, micro base stations and users. Among them, the user's uplink and downlink access to the base station can be dynamically configu...

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Abstract

The invention discloses a joint uplink and downlink load distribution method based on reinforced inter-cell interference coordination. Access of uplink and downlink nonsymmetric channels is considered, and the transmission rate of a user is improved. A UM-ABS protocol is disclosed, a traditional ABS protocol is redesigned. Downlink silence of a macro eNB in an almost blank subframe is changed into uplink transmission capable of configuring a micro-user, the utilization rate of the ABS is effectively increased, and system capacity is improved. A relaxation-integration algorithm is disclosed, so that the user can effectively have access to the micro eNB or a micro station. Meanwhile, a UM-ABS protocol is well configured, and time resources of uplink and downlink transmission are effectively distributed. The joint uplink and downlink load distribution method based on reinforced inter-cell interference coordination improves load balance of a system and capacity of the system, improves the transmission rate of the user, and enables performance of the whole system to be greatly improved.

Description

technical field [0001] The invention belongs to the technical field of wireless communication networks, and in particular relates to a joint uplink and downlink load distribution method based on enhanced inter-cell interference coordination. Background technique [0002] With the development of the cellular network, in order to meet the rapidly growing demand for wireless services, 3GPP LTE-Advanced proposed the concept of a heterogeneous cellular network in Rel-11. Deploy low-power nodes within the coverage of high-power macro base stations to form a multi-layer heterogeneous cellular network to improve coverage and capacity in hotspot areas and increase spectrum utilization. These low-power nodes are divided into picocells and femtocells. Among them, picocells have a coverage range of several hundred meters and are mostly deployed outdoors and can be used by all users; femtocells have a coverage range of tens of meters and are mainly deployed indoors and are limited to ho...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W28/08H04W72/04
Inventor 刘勤郑杰黄鹏宇周天卫李钊李建东
Owner XIDIAN UNIV
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