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Signal sending method of base station and energy-saving base station

A technology for transmitting signals and base stations, which is applied in energy-saving ICT, wireless communication, and energy consumption reduction. It can solve the problems of cell reconstruction, increase the complexity of user equipment UE, and activate user disconnection, and achieve the effect of reducing energy consumption.

Active Publication Date: 2010-07-14
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, if the number of reference symbol transmissions is reduced by changing the bandwidth of the cell, on the one hand, the cell will be rebuilt or all active users will be disconnected; The complexity of UE (User Equipment)

Method used

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  • Signal sending method of base station and energy-saving base station
  • Signal sending method of base station and energy-saving base station
  • Signal sending method of base station and energy-saving base station

Examples

Experimental program
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Effect test

Embodiment 1

[0042] 21. The network side triggers the base station to enter / exit the energy-saving mode.

[0043] The network side can trigger the base station to enter / exit the energy-saving mode according to the current cell load condition, or network operation condition, or statistical results for a period of time. Specifically, refer to the above-mentioned method embodiment of the present invention.

[0044] 22. When it is necessary to enter the energy-saving mode, the base station sets a reference symbol energy-saving indication in the system message, and broadcasts the energy-saving mode corresponding to the reference symbol energy-saving indication to all user equipments in the cell.

[0045] 23. The base station dynamically uses the entire downlink bandwidth according to the amount of service data, and only sends reference symbols in the downlink bandwidth where data is sent, to ensure data demodulation and channel quality measurement.

[0046] It should be noted that, in another embodimen...

Embodiment 2

[0050] The difference between this embodiment and the first embodiment is that when it is necessary to enter the energy-saving mode, the base station uses dedicated signaling such as reconfiguration signaling to set a reference symbol energy-saving indication, and notifies the energy-saving mode corresponding to the reference symbol energy-saving indication to be set All connected user equipments in the cell; when it is necessary to exit the energy-saving mode, the base station uses dedicated signaling to cancel the reference symbol energy-saving indication, and notify all connected user equipments in the cell of the cancellation of the reference symbol energy-saving indication.

Embodiment 3

[0052] 31. The network side triggers the base station to enter / exit the energy-saving mode.

[0053] The network side can trigger the base station to enter / exit the energy-saving mode according to the current cell load condition, or network operation condition, or statistical results for a period of time. Specifically, refer to the above-mentioned method embodiment of the present invention.

[0054] 32. When it is necessary to enter the energy-saving mode, the base station sets a data transmission bandwidth indication in a system message, and informs all user equipments in the cell of the energy-saving mode corresponding to the data transmission bandwidth indication set by broadcasting.

[0055] The data transmission bandwidth indication can be expressed in Bitmap mode or in encoding mode.

[0056] The granularity represented by the Bitmap mode can be 1 resource block or N resource blocks. The size of N can be a constant specified by the agreement or a variable. If N is a variable, ...

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Abstract

The embodiment of the invention discloses a signal sending method of a base station, comprising the steps: when needing to enter an energy-saving mode, setting an energy-saving sign; informing user equipment of the energy-saving mode corresponding to the energy-saving sign; and using the energy-saving mode after setting the energy-saving sign to send signals. The energy-saving sign comprises reference symbol energy-saving indication, data transmission bandwidth indication or indication of reducing antenna transmitting and the like. Based on the method, the embodiment of the invention also discloses an energy-saving base station. The invention can realize dynamical changing of transmitting bandwidth of descending reference symbols of a cell when the load of the cell is lighter and achieve the purpose of reducing energy consumption of the base station, simultaneously, does not change the key parameter of the bandwidth of the cell, reduces the influence of saving energy and reducing consumption on the service and can not increase the complexity of user equipment.

Description

Technical field [0001] The invention relates to a method for transmitting a signal by a base station and an energy-saving base station. Background technique [0002] For a mobile operator, power consumption accounts for a large proportion of the operating cost of the base station. Reducing the overall power of the base station to reduce power consumption can not only save a lot of costs for operators, but also conform to the trend of modern environmental protection. [0003] Most of the power of the base station is consumed by the power amplifier that transmits the signal. In the Long Term Evolution (Long Term Evolution) system, the downlink reference symbol RS (Reference Symbol) is necessary for downlink reception. Even if there is no data to be sent, the base station needs to send the downlink reference symbol fixedly. And in the case of equal coverage, the power of a single reference symbol is usually unchanged, and the transmit power occupied by the reference symbol is propor...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W52/02H04W88/08
CPCH04W68/00Y02B60/50H04W88/08H04W52/0206Y02D30/70
Inventor 黄颖华
Owner HUAWEI TECH CO LTD
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