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System bandwidth self-adaptive adjusting method in long term evolution system

A technology of long-term evolution system and self-adaptive adjustment, applied in the field of mobile communication, which can solve problems such as user interference in neighboring cells

Active Publication Date: 2012-11-28
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the existing technology, when a cell is established, the system bandwidth is uniquely determined. Even when the number of users is small, the resources allocated to users by eNB scheduling will spread over the entire system bandwidth, resulting in interference to users in neighboring cells.

Method used

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  • System bandwidth self-adaptive adjusting method in long term evolution system
  • System bandwidth self-adaptive adjusting method in long term evolution system
  • System bandwidth self-adaptive adjusting method in long term evolution system

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Embodiment Construction

[0028] The core idea of ​​the self-adapting system bandwidth adjustment method in the long-term evolution system of the present invention is to measure whether the current system bandwidth is appropriate and adjust the bandwidth accordingly by counting the number of online users or the actual usage of RBs. This method can make the system bandwidth change flexibly, help to reduce the overlapping areas of the same frequency in adjacent cells, and thus reduce the interference to users who use the same frequency resources in adjacent cells. The implementation of the technical solution will be further described in detail below in conjunction with the accompanying drawings.

[0029] like figure 1 As shown, the method for adaptive adjustment of system bandwidth in the long-term evolution system of the present invention includes the following steps:

[0030] Step 101: Count the number Num_ue or percentage of users currently in the active state; or report the number of RBs currently a...

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Abstract

The invention discloses a system bandwidth self-adaptive adjusting method in a long term evolution system, which comprises the following steps of: a, counting resource conditions practically used by the system; b, periodically triggering comparison with the resource occupying threshold set by the system according to the resource conditions practically used by the system, and judging system bandwidth occupied by the resource; and c, changing the system bandwidth. In the premise of meeting business demand of users in a cell, the system bandwidth self-adaptive adjusting method in the long term evolution system of the invention can increase and decrease bandwidth according to increase and decrease of quantity of system online users correspondingly so as to meet different business quality requirements on users, reduce multiplexing odds of adjacent cell frequencies, decrease interference to users in the adjacent cells, and is particularly suitable for use in communication systems with variable bandwidth and same frequency interference.

Description

technical field [0001] The present invention relates to the field of mobile communication, in particular to a method for adaptively adjusting bandwidths of uplink and downlink systems in a Long Term Evolution (LTE) system, and is particularly suitable for communication systems with variable system bandwidth and co-frequency interference. Background technique [0002] The LTE system has attracted more and more attention from operators due to its advantages of low delay, high transmission efficiency and effective improvement of service quality for cell edge users. The 3GPP (3rd Generation Partnership Project) organization defines an LTE system frame as 10 ms, which is divided into 10 subframes, and each subframe is further divided into 2 time slots. Whether it is uplink or downlink, the transmission signal of each time slot passes through N RB N sc RB subcarriers and N symb A grid of symbols is used to describe it. in N sc RB ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W28/10H04W28/20H04W28/24
CPCH04W16/04Y02B60/50Y02D30/70
Inventor 易鸿锋
Owner ZTE CORP
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