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Method of multi-user multi-input multi-output frequency selection scheduling of local thermodynamic equilibrium (LTE) system

A multiple-input multiple-output, frequency-selective scheduling technology, applied in the field of communications, can solve problems such as resource waste, user group and rate optimization, and achieve the effect of avoiding waste and maximizing user group and rate

Inactive Publication Date: 2013-05-08
POTEVIO INFORMATION TECH
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Problems solved by technology

When a user group occupies multiple resources, the existing multi-user resource allocation scheme adjusts the MCS for each user in the user group separately, and does not optimize the sum rate of the user group, resulting in a waste of resources

Method used

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  • Method of multi-user multi-input multi-output frequency selection scheduling of local thermodynamic equilibrium (LTE) system
  • Method of multi-user multi-input multi-output frequency selection scheduling of local thermodynamic equilibrium (LTE) system
  • Method of multi-user multi-input multi-output frequency selection scheduling of local thermodynamic equilibrium (LTE) system

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Embodiment Construction

[0047] In order to make the object, technical solution and advantages of the present invention more clearly, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0048] In the embodiment of the present invention, in combination with the resource type indication rules of the LTE system, single-user resource allocation is first performed; then, a candidate user group is constructed on each resource unit pre-allocated by a single user, and then the sum rate is used as a criterion for The MCS of each layer of the user group is adjusted to meet the unified MCS of the same layer and maximize the user group and rate. Waste of resources is avoided.

[0049] See attached figure 1 It is a flow diagram of a method for multi-user multi-input multi-output frequency selective scheduling in an LTE system, specifically including the following steps:

[0050] Step 101: Perform priority queuing for users who ...

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Abstract

A method of multi-user multi-input multi-output frequency selection scheduling of a local thermodynamic equilibrium (LTE) system is characterized by including that: users having transmission requirements are lined up according to priority in a transmission time interval (TTI), a user K having the highest priority is chosen; resources are distributed in advance for the user K according to a single user resource distribution scheme; and a user group G is built for the user K on each pre-distributed resource; modulating control system (MCS) regulation is conducted according to user group MCS regulation scheme, single user transmission or multi-user transmission and pre-distribute resource occupation are confirmed according to the user group G and user transmission data quantity. After the method is applied, maximization of user groups and speed is achieved, and waste of resources is avoided.

Description

technical field [0001] The present invention relates to the technical field of communications, and more specifically, to a method for multiple-user multiple-input multiple-output frequency selective scheduling in an LTE system. Background technique [0002] Multiple Input Multiple Output (MIMO) technology can significantly improve wireless spectrum efficiency through spatial multiplexing, and improve link reliability through spatial diversity. Orthogonal Frequency Division Multiplexing (OFDM) technology can convert a frequency selective channel into multiple parallel frequency flat channels. After combining OFDM and MIMO in a multi-user mobile communication system, MIMO processing can be performed on each subchannel of OFDM. The combination of OFDM and MIMO can bring about a huge performance improvement, but it also increases the complexity of resource allocation. [0003] The multi-user MIMO-OFDM system has degrees of freedom in the frequency domain, air domain and user do...

Claims

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Application Information

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IPC IPC(8): H04W72/10H04W72/12
Inventor 周通彭木根宿淑艳
Owner POTEVIO INFORMATION TECH
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