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Unauthorized frequency band uplink power control method and related equipment

An unlicensed frequency band, power control technology, applied in the field of communication, can solve the problem that the power control scheme is not applicable to the unlicensed frequency band, affects the battery life, and affects the LTE-U uplink performance.

Active Publication Date: 2017-08-11
DATANG MOBILE COMM EQUIP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the unlicensed frequency band, there is no coordination between different systems. For example, WiFi considers that the channel is idle as long as the energy detection result is less than -62dBm (decibel milliwatt), which is much higher than the receiving sensitivity of LTE.
If the transmit power of the terminal is low, it will cause the WiFi nodes near the UE to access the channel, and transmission collision will occur, and the high transmit power of WiFi will seriously affect the uplink performance of LTE-U; if the terminal always uses full power to transmit , which will lead to excessive power consumption of the terminal, serious waste of power consumption and impact on battery life
[0011] It can be seen that the power control scheme of the existing licensed frequency band is not suitable for the unlicensed frequency band

Method used

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  • Unauthorized frequency band uplink power control method and related equipment
  • Unauthorized frequency band uplink power control method and related equipment
  • Unauthorized frequency band uplink power control method and related equipment

Examples

Experimental program
Comparison scheme
Effect test

no. 1 Embodiment

[0153] In step a, the base station acquires the interference intensity information of the non-LTE system and / or communication nodes of other operators around itself or the terminal.

[0154] First, the base station measures the non-LTE systems and / or communication nodes of other operators around itself to obtain interference intensity information.

[0155] The specific measurement and detection methods used include but are not limited to the following two:

[0156] First, the base station can use the unlicensed frequency band to perform channel measurement and detection in a time period when no uplink or downlink transmission is scheduled. The base station judges the interference intensity of non-LTE communication nodes around itself or LTE-U communication nodes of other operators according to the measurement results of the unlicensed frequency band.

[0157] For example, the base station judges whether there is a strong interference source around the base station according t...

no. 2 Embodiment

[0171] Step a is the same as the description of step a in the first specific embodiment, and will not be repeated here.

[0172] Step b, the base station determines that there are no non-LTE or LTE-U communication nodes of other operators in its surroundings that affect its receiving performance based on the interference intensity information of non-LTE systems and / or communication nodes of other operators around itself or the terminal , and determine that there is an LTE-U communication node of a non-LTE or other operator that affects the receiving performance around the terminal, and determine the uplink transmit power of the terminal according to the interference intensity information of the LTE-U communication node of the non-LTE or other operator.

[0173] Specifically, the base station can determine an appropriate power target value for the terminal according to the interference intensity information of interfering communication nodes around the terminal, and the power ta...

no. 3 Embodiment

[0180] Step a is the same as the description of step a in the first specific embodiment, and will not be repeated here.

[0181] Step b, the base station determines that there are no non-LTE or LTE-U communication nodes of other operators in its surroundings that affect its receiving performance based on the interference intensity information of non-LTE systems and / or communication nodes of other operators around itself or the terminal , and it is determined that there is no non-LTE or LTE-U communication node of other operators that affects the reception performance around the terminal, and it is determined that the uplink transmit power of the terminal is greater than a third preset threshold.

[0182] Specifically, such as Figure 7 As shown, the base station sets the power target value of the terminal to a small value. For example, if the receiving performance allows, set the difference between the power target value and the receiving sensitivity as much as possible within...

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Abstract

The invention discloses an unauthorized frequency band uplink power control method and related equipment, used for providing an uplink power control scheme applicable to an unauthorized frequency band LTE system. The method comprises the steps as follows: a base station acquires interference strength information of interference communication nodes of the base station and / or interference communication nodes around a terminal; the base station determines uplink transmission efficiency of the terminal according to the interference strength information; and the base station configures the terminal to transmit an uplink signal at an unauthorized frequency band according to the uplink transmission power.

Description

technical field [0001] The present invention relates to the field of communication technologies, in particular to a method for controlling uplink power in an unlicensed frequency band and related equipment. Background technique [0002] With the continuous growth of mobile data traffic, the spectrum resources are becoming more and more tight. Only using licensed spectrum resources for network deployment and service transmission can no longer meet the traffic demand. Therefore, the long-term evolution (LongTerm Evolution, LTE) system considers the The transmission (Unlicensed LTE, referred to as U-LTE or LTE-U) is deployed on resources to improve user experience and expand coverage. [0003] Unlicensed spectrum can be shared by various wireless communication systems, such as Bluetooth, WiFi, etc., and various systems use unlicensed spectrum resources by preempting resources. Therefore, the coexistence between LTE-U deployed by different operators and wireless communication s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W52/14H04W52/24
CPCH04W52/143H04W52/243H04W24/08Y02D30/70
Inventor 王加庆潘学明司倩倩
Owner DATANG MOBILE COMM EQUIP CO LTD
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