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Frequency resource management method

A technology of frequency resources and management methods, which is applied in the field of frequency resource management in wireless cell cellular systems, can solve problems such as low efficiency of system frequency resource usage, inability to realize timely division of cell frequency sets, etc., and achieve the effect of improving comprehensive performance

Active Publication Date: 2014-09-10
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Considering the problem existing in the related art that in FFR, the static frequency resource management cannot realize the timely division of the frequency sets of each cell, which leads to the low efficiency of the system frequency resource usage, the present invention is proposed. For this reason, the present invention The main purpose is to provide an improved cell frequency resource set configuration method to solve the above problems

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Embodiment 1

[0024] According to the embodiment of the present invention, a frequency resource management method is firstly provided. In this method, each cell in the system notifies its neighbors and accepts the notification from the neighbors, and realizes it through negotiation or communication between cells. Frequency resource management, specifically, for each cell in the system, such as figure 1 The following operations are shown to implement frequency resource management, wherein, figure 1 It is a flowchart of a frequency resource management method according to an embodiment of the present invention. It should be noted that, for the convenience of description, the step numbers are used below, but this should not be construed as constituting any limitation on the present invention. According to the needs of implementation, it can be represented by Embodiments of the invention are performed in a manner different from the sequence described below:

[0025] Step S102, the cell periodic...

Embodiment 2

[0038] According to an embodiment of the present invention, a frequency resource configuration method is also provided, and the method is preferably based on the above frequency resource management method. Specifically, after the sets are divided in step S106, frequency resource configuration is further performed based on the divided sets. The frequency resource configuration process is specifically described below, and the same or similar parts as those in Embodiment 1 will not be described again here.

[0039] After the sets are divided, that is, the frequency resources are divided into the first set, the second set, and the third set, frequency resource configuration is performed based on the three divided sets.

[0040] In the following, a cell center user and a cell edge user will be described first. Generally, when the user's comparison value is less than a predetermined threshold, the user is a cell edge user, and when the user's comparison value is greater than a pred...

example

[0045] The frequency resource management and configuration method of the embodiment of the present invention will be further described below through examples. First of all, the notification period and the comparison period mentioned above can be set according to factors such as data transmission rate, delay time, noise interference, etc., which is not limited in the present invention. In this example, it is assumed that the notification period is 20ms and the comparison period is 40ms.

[0046] image 3 An exemplary network topology is given. In this structure, cells x1, x2, x3, x4, x5 are neighbors of cell x.

[0047] Cells x, x1, x2, x3, x4, and x5 respectively periodically notify their neighbors of the frequency resource block identification and the corresponding number of frequency resource blocks used by themselves to transmit high power in this notification period (20ms); and each cell periodically Ground (40ms) compares the number of times the frequency resource bloc...

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Abstract

The invention discloses a frequency resource management method which comprises the following procedures: a cell periodically emits a first frequency resource block message with the power higher than a preset predefined threshold value to each adjacent reporting cell and receives a second frequency resource block message with the power higher than the preset predefined threshold value to each adjacent reporting cell; as to each frequency resource block, periodically comparing the first frequency resource block message with each the second frequency resource block message; dividing all the frequency resource block into a plurality of aggregations according to the comparison result. The invention can be used for dynamically managing the frequency resource, thus raising the combination property of network.

Description

technical field [0001] The invention relates to the field of wireless communications, in particular to a frequency resource management method in a wireless cell cellular system. Background technique [0002] In a wireless cellular system, inter-cell interference is a problem that needs to be solved when inter-cell co-frequency networking is performed. Generally, inter-cell interference can be solved by inter-cell frequency reuse. At this time, the frequency reuse factor is greater than 1. When the above method is adopted, the spectrum efficiency is low. For a system based on Orthogonal Frequency Division Multiplexing (OFDM for short), fractional frequency reuse (FFR) is a main method for solving inter-cell interference. [0003] In partial frequency reuse, usually, the system frequency band is divided into several parts that are orthogonal to each other, and then allocated to adjacent cells. Each cell uses the allocated frequency resources as a set. Let this set be A, and A...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W16/10H04W16/12H04W72/04
Inventor 李永薛妍汪孙节
Owner ZTE CORP