Cell energy saving method, base station and long term evolution system

A cell and base station technology, applied in the field of communications, can solve problems such as strong radio frequency interference, and achieve the effect of improving accuracy, network performance and user experience

Active Publication Date: 2016-08-24
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The main purpose of the present invention is to provide a cell energy-saving method, base station and LTE system, to at least solve the problem of strong radio frequency interference or coverage blank caused by the cell energy-saving method in the above-mentioned related art

Method used

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  • Cell energy saving method, base station and long term evolution system
  • Cell energy saving method, base station and long term evolution system
  • Cell energy saving method, base station and long term evolution system

Examples

Experimental program
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Embodiment 1

[0057]This embodiment provides a method for saving energy in a cell. This embodiment combines the above embodiments and preferred implementation modes therein. The method includes the following two methods:

[0058] Method 1: On the X2 interface between base stations (such as cell energy saving request message, cell compensation request message), by transmitting the cell energy saving / compensation execution absolute time Tabs, and / or the absolute time drift amount ΔTabs to make the coordinated base stations perform cell compensation and compensation The operation of shutting down the cell can be carried out synchronously. In the case that ΔTabs is sufficiently small (at least less than 1 second), or both coordinating nodes know ΔTabs, only the cell energy saving / compensation execution absolute time Tabs may be transmitted.

[0059] Method 2: On the X2 interface between base stations (such as cell energy saving request message, cell compensation request message), pass the cell ...

Embodiment 2

[0063] This embodiment provides a method for calculating the absolute time drift / interface message transmission delay. In this embodiment, it is assumed that the source eNB (S-eNB) and the target eNB (T-eNB) are two with X2 interface In principle, the eNB can select any pair of request / response messages on the X2 interface to realize the calculation of ΔTabs / Δtdelay by carrying timestamp information. Figure 4 is a schematic diagram of the calculation principle of ΔTabs / Δtdelay according to an embodiment of the present invention, in Figure 4 Middle: t1 is the time when the S-eNB sends the request message, t2 is the time when the T-eNB receives the request message, t3 is the time when the T-eNB sends the response message, and t4 is the time when the S-eNB receives the response message. Assuming that the absolute time drift of T-eNB relative to S-eNB is ΔTabs, here it is assumed that the time it takes for messages to go back and forth between S-eNB and T-eNB is the same, that i...

Embodiment 3

[0071] In this embodiment, a cell energy saving method is provided. This embodiment combines the above embodiments and the preferred implementation modes. This embodiment adopts the absolute time coordination mode, and the compensation cell initiates the process, and the S-eNB indicates the process of initiating the process. The control base station of the compensation cell, T-eNB(s) represents the control base station (possibly multiple) of the target energy-saving cell. This embodiment involves two time parameters: the absolute time point Tabs and the absolute time drift ΔTabs, where ΔTabs can be Calculate according to the formula in Example 2. Figure 5 It is an implementation flow chart (compensation cell initiation process) of using the absolute time coordination mode according to an embodiment of the present invention, such as Figure 5 As shown, the method includes the following steps:

[0072] Step S502: S-eNB sends a cell compensation preparation request to T-eNB(s),...

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Abstract

The invention discloses a cell energy-saving method, a NodeB and long term evolution (LTE) system. The method comprises the following steps that: a NodeB that a first cell belongs to sends a request message to a NodeB that a second cell belongs to, wherein the request message is used to indicate the second cell to carry out energy-saving operation and carries a cell identifier of the second cell and an energy-saving / compensation execution time parameter; and after the NodeB that the first cell belongs to sends the request message to the NodeB that the second cell belongs to, energy-saving operation corresponding to the first cell is carried out according to the energy-saving / compensation execution time parameter. Specifically, the first cell is a compensation cell and the second cell is an energy-saving cell; or the first cell is an energy-saving cell and the second cell is a compensation cell . According to the invention, accuracy of energy conservation of the cell is improved; and the network performance and user experience are enhanced.

Description

technical field [0001] The present invention relates to the communication field, in particular, to a cell energy saving method, a base station and a Long Term Evolution (LTE for short) system. Background technique [0002] The LTE network is composed of an Evolved Universal Terrestrial Radio Access Network (Evolved Universal Terrestrial Radio Access Network, E-UTRAN for short) and an Evolved Packet Core (EPC for short) network. E-UTRAN includes a collection of evolved base stations (Evolved NodeB, referred to as eNB), EPC includes Mobile Management Entity (Mobile Management Entity, referred to as MME) and serving gateway (Serving Gateway, referred to as S-GW), etc., the network architecture is flat change. The eNB and MME / S-GW are connected through the S1 interface, and the eNBs can be connected through the X2 interface. One eNB can manage one or more cells. [0003] Self-Organized Network (SON for short) in LTE is a comprehensive technology of network self-organization, ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W52/02H04W92/20
CPCY02D30/70
Inventor 方建民高音韩立锋闫剑龙张健金圣峣
Owner ZTE CORP
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