WO2013097713A1

WO2013097713A1 - Remote radio unit and power consumption limiting method therefor, and base station controller

Info

Publication number: WO2013097713A1
Application number: PCT/CN2012/087509
Authority: WO
Inventors: 刘选鹏
Original assignee: 华为技术有限公司
Priority date: 2011-12-26
Filing date: 2012-12-26
Publication date: 2013-07-04
Also published as: CN102523618A

Abstract

Embodiments of the present invention relate to a remote radio unit (RRU) and a power consumption limiting method therefor, and a base station controller. The RRU comprises: a power amplifier unit, used for amplifying radio power; a power consumption detection unit, used for obtaining the power consumption of the RRU by detecting the power consumption of the power amplifier unit, and providing a detection result for a power consumption monitoring unit; the power consumption monitoring unit, used for calculating a power consumption value of the RRU according to the detection result of the power consumption detection unit, and providing the value for a power consumption control unit; the power consumption control unit, used for controlling the power consumption of the power amplifier unit according to a power consumption upper limit identifier command and a power consumption upper limit threshold value, which are sent from the outside, when the power consumption upper limit identifier is valid, so that the power consumption value of the RRU is not higher than the power consumption upper limit threshold value. The RRU and the power consumption limiting method therefor and the base station controller according to the embodiments of the present invention can effectively decrease the power consumption of the RRU.

Description

Remote radio unit and its power consumption limiting method, and base station controller The application is submitted to the Chinese Patent Office on December 26, 2011, the application number is 201110441770.6, and the invention name is "remote radio unit and its power consumption limiting method, The priority of the Chinese Patent Application for the "Base Station Controller" is incorporated herein by reference. Technical field

The present invention relates to a mobile communication system, and in particular, to a remote radio unit (RRU) in a base station, a power consumption limiting method thereof, and a base station controller (BSC).

Background technique

In a base station system, the remote radio unit (RRU) consumes the largest proportion of the power consumed. Generally, in a base station system, one or more remote radio unit RRUs are configured for wireless access. The RRU implements the output of the air interface RF signal. The greater the output power of the RF signal, the greater the power consumption of the RRU. When the power supply to the RRU is limited or the RRU power consumption needs to be reduced, the maximum power consumption of the RRU needs to be controlled. When the capacity of the power supply is limited, the RRU's RF output power needs to be reduced to indirectly reduce the RRU power consumption. To limit the power consumption of the RRU, you need to set the maximum RF output power of the RRU and limit the RRU's maximum power consumption according to the specification value. In the communication system, the BSC communicates with the BTS (Base Transceiver Station) and controls the BTS, and communicates with the RRU directly or indirectly through the communication link.

In the above prior art, the power consumption of the RRU can be limited by reducing the RF output power of the RRU, but the degree of power consumption reduction of the RRU cannot be accurately grasped. In addition, in the case of restrictions according to specifications, the output power of the RRU can be controlled, but individual differences between the individual RRUs cannot be controlled, and there may be a problem of excessive power reduction or excessive power consumption of a single RRU. Summary of the invention

In view of this, the embodiments of the present invention provide a remote radio unit, a power consumption limiting method thereof, and a base station controller, which can effectively reduce power consumption of the RRU. To solve the above problem, the technical solution provided by the embodiment of the present invention is as follows: In one aspect, an embodiment of the present invention provides a remote radio unit RRU, including: a power amplifying unit, configured to implement amplification of radio frequency power; a unit, obtaining power consumption of the RRU by detecting power consumption of the power amplifying unit, and providing the detection result to a power consumption monitoring unit; a power consumption monitoring unit, configured to detect according to the power consumption The detection result of the unit calculates a power consumption value of the RRU and provides the power consumption control unit to the power consumption control unit, and the power consumption control unit is configured to use the power consumption capping command and the power consumption capping threshold according to the externally transmitted power consumption. When the capping flag is valid, the power consumption of the power amplifying unit is controlled such that the power consumption value of the RRU is not higher than the power capping threshold. In another aspect, another embodiment of the present invention further provides a base station controller BSC, including: a power consumption capping setting unit, where the power consumption capping setting unit is configured to send a power consumption capping identifier command to a remote radio unit RRU. And the power capping threshold, and receiving the power capping success message from the RRU. In another aspect, another embodiment of the present invention further provides a power consumption limiting method for a remote radio unit RRU, including: acquiring a power consumption value of the RRU; receiving an externally transmitted power capping command and a power consumption capping The threshold value, when the power capping identifier is valid, controls the power consumption value of the RRU not to be higher than the power capping threshold. It can be seen that And the base station controller, when the power consumption capping identifier is valid, by comparing the power consumption value of the RRU and the power consumption capping threshold value, thereby controlling the power consumption value of the RRU to be gradually close to the work, thereby being effective Reduce the power consumption of the RRU. DRAWINGS

The drawings used in the embodiments or the description of the prior art are briefly introduced. It is obvious that the drawings in the following description are only some embodiments of the present invention, and are not creative to those skilled in the art. Other drawings can also be obtained from these drawings on the premise of labor. 1 is a schematic structural diagram showing a wireless communication system according to an embodiment of the present invention; FIG. 2 is a schematic structural diagram of an RRU according to an embodiment of the present invention; and FIG. 3 is a communication between a BSC and an RRU according to an embodiment of the present invention. FIG. 4 is a detailed flowchart of a method for limiting power consumption of a remote radio unit RRU according to an embodiment of the present invention; FIG. 5 is a schematic structural diagram of a base station controller in an embodiment of the present invention;

FIG. 6 is a schematic structural diagram of a base station in an embodiment of the present invention. detailed description

The technical solutions in the embodiments of the present invention are clearly and completely described in the following with reference to the accompanying drawings in the embodiments of the present invention. It is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments of the present invention without departing from the inventive scope are the scope of the present invention. 1 is a block diagram showing the structure of a wireless communication system according to an embodiment of the present invention. The system 10 of FIG. 1 includes a base station controller (BSC) 11 and a remote radio unit (RRU) 121 included in a base station (BTS) 12. The BSC 11 may include a power consumption cap setting unit 111 that transmits a power capping identification command and a power consumption capping threshold to the RRU 121 by means of communication between the BSC 11 and the BTS 12; The power capping setting unit 111 can also be used to receive a power capping success message from the RRU 121. 2 is a schematic view showing the structure of an RRU according to an embodiment. In FIG. 2, the RRU 121 may include a power consumption control unit 1211, a power consumption detecting unit 1212, a power consumption monitoring unit 1213, and a power amplifying unit 1214. A power consumption capping identifier is stored in the power consumption control unit 1211. The power consumption control unit 1211 receives the power consumption capping identification command and the power consumption capping threshold value from the BSC 11, and sets the power consumption capping flag to be valid or invalid according to the power consumption capping identification command, and stores the power consumption capping.

The 1211 can also send a power capping setup success message to the BSC. The power consumption detecting unit 1212 is configured to detect the power consumption of the RRU 121 and provide the detection result to the power consumption monitoring unit 1213. Here, the specific implementation of the power consumption detecting unit 1212 is not particularly limited, and may be any device capable of detecting power; meanwhile, the power consumption monitoring unit 1212 may also be a peripheral device of the RRU (not shown in the figure) The power consumption monitoring unit 1213 is configured to detect the power consumption of the RRU 121, and the detection result is not described herein. For example, it may be in the form of a resistor that detects power by detecting the voltage drop across it. For another example, in the case where AC power is supplied as the power source, the electromagnetic coupling device can be used to detect the power by detecting the current. Of course, the present invention is not limited thereto, and those skilled in the art can understand that any device capable of detecting power is included in the scope of the present invention. The power consumption monitoring unit 1213 calculates the power consumption value of the RRU 121 based on the detection result of the power consumption detecting unit 1212 and supplies it to the power consumption control unit 1211. The power amplifying unit 1214 is a unit that performs the function of the RRU 121, for example, a function of performing radio frequency power amplification or the like. When the power capping flag is valid, the power consumption control unit 1211 controls the power consumption of the power amplifying unit 1214 such that the power consumption of the RRU 121 is not higher than the power capping threshold. Specifically, the power consumption control unit 1211 can control the power consumption of the power transistor of the power transistor of the power amplifier unit 1214 (not shown) by controlling the gate (or base) voltage of the power transistor. This article will not be repeated here. In addition, those skilled in the art can understand that the power of the other functional subunits in the RRU 121 can also be controlled simultaneously or at different times to achieve capping control of the power consumption of the RRU 121. In addition, the RRU may further include a power management unit 1215 connected to the power consumption detecting unit 1212, the power consumption control unit 1211, and the power amplifying unit 1214, respectively, for supplying power to each unit inside the RRU. According to the actual situation, the power management unit 1215 may be in any form when it is specifically implemented. For example, when the input supply voltage is direct current, the power management unit 1215 can be, for example, a direct current-to-direct current (DC/DC) unit that produces one or more desired voltages that are the same or different than the input voltage. For another example, when the input supply voltage is alternating current, the power management unit 1215 may be, for example, a rectification/stabilization unit that generates one or more desired voltages that are the same or different from the input voltage. 3 is a flow chart of communication between a BSC and an RRU according to an embodiment of the present invention. On the BSC-side, the BSC sends a power capping identification command and a power capping threshold to the RRU as needed. On the RRU-side, after receiving the power capping command and the power capping threshold sent by the BSC, the RRU stores the power capping threshold and caps the power consumption included in the RRU according to the power capping command. The identifier is set to be valid or invalid. The power capping identifier command includes an indication of whether the power capping flag is set to be valid, that is, when the command is “device power capping control flag is valid”, the function is performed. The cost capping flag is set to be valid, otherwise it is set to be invalid, and will not be described in detail in this article. The initial value of the power cap identifier in the RRU is "invalid". When the value of the power capping flag is "invalid", the power capping operation is not performed. In addition, the BSC can also be used when the operating indicators of the equipment are prioritized, or when the power supply is sufficient. A command to set the value of the power cap flag to "invalid" is issued; at this time, the power cap flag is set to be invalid on the RRU-side, and the power capping operation is not performed. In addition, the method in this embodiment may further include: after successfully setting the power consumption capping flag to be valid, feeding back the power capping setting success message to the BSC. Then, the RRU performs power consumption control on the relevant units in the RRU according to the newly set power consumption capping threshold. For a detailed flowchart, refer to the following description about FIG. 4 is a detailed flow diagram of a method of limiting power consumption of a remote radio unit RRU, in accordance with an embodiment of the present invention. In the RRU, after the power capping threshold and the power capping flag are set, a control flow that limits the power consumption of the remote radio unit RRU is started. First, determine if the power cap is valid. Second, if the power capping flag is valid, if the detected and calculated RRU power consumption value is greater than the stored power capping threshold, then the relevant functional unit in the RRU (eg, the most power-consuming RF power amplifying unit) The power is controlled to reduce its power such that the power consumption value of the RRU is less than or equal to the power consumption amplification threshold; when the power consumption value of the RRU is less than or equal to the stored power consumption threshold threshold, End the control operation flow. And if the power capping identifier is invalid, the control operation flow is exited. In addition, the embodiment of the present invention also provides a base station controller (BSC) 11 , as shown in FIG. 5 ; the BSC 11 may include a power consumption cap setting unit 111 in addition to all functional units of the existing BSC; The power consumption capping unit 111 further includes a sending module 1111 that sends a power capping identification command and a power consumption capping threshold to the RRU 121, and a receiving device for receiving a power capping success message from the RRU 121. Module 1112. In addition, the embodiment of the present invention also provides a base station. As shown in FIG. 6, the base station is similar to the existing base station, and includes a remote radio unit RRU121 and a baseband processor BBU 122. The difference is that the RRU121 can also be used. The power consumption control unit 1211, the power consumption detecting unit 1212, the power consumption monitoring unit 1213, the power amplifying unit 1214, and the power management unit 1215; The power amplifying unit 1214 is configured to implement the amplification of the radio frequency power; the power consumption detecting unit 1212 acquires the power consumption of the RRU by detecting the power consumption of the power amplifying unit, and provides the detection result to the power consumption monitoring unit 1213. The power consumption monitoring unit 1213 is configured to calculate a power consumption value of the RRU according to the detection result of the power consumption detecting unit 1212 and provide the power consumption control unit 1211; the power consumption control unit 1211 is configured to: The power consumption of the power amplifying unit 1213 is controlled according to the power consumption capping command and the power capping threshold sent by the external device, so that the power consumption value of the RRU is not higher than the power cap. The power management unit 1215 is connected between the power consumption detecting unit 1212 and each unit inside the RRU for supplying power to each unit inside the RRU. In addition, the embodiment of the present invention also provides a communication system, where the communication system includes a remote radio unit RRU, and the RRU may further include a power consumption control unit, a power consumption detecting unit, a power consumption monitoring unit, and power amplification. The power amplifying unit is configured to implement amplification of radio frequency power; the power consumption detecting unit acquires power consumption of the RRU by detecting power consumption of the power amplifying unit, and provides the detection result to power consumption monitoring. The power consumption monitoring unit is configured to calculate a power consumption value of the RRU according to the detection result of the power consumption detecting unit, and provide the power consumption control unit to the power consumption control unit; The power capping command and the power capping threshold control power consumption of the power amplifying unit when the power capping flag is valid, such that the power consumption value of the RRU is not higher than the power capping threshold. Based on the foregoing embodiment, the embodiment of the present invention further provides a communication system, where the communication system includes the foregoing RRU and the power consumption control unit, the power consumption detecting unit, the power consumption monitoring unit, and the power amplifying unit included in the RRU. In addition, the RRU in the communication system may further include: a power management unit connected between the power consumption detecting unit and each unit inside the RRU, for supplying power to each unit inside the RRU. It should be noted that, based on the foregoing embodiments, the present invention further provides a wireless communication system, where the wireless communication system includes a base station controller (BSC) and a remote radio unit (RRU) included in the base station; The BSC sends a power capping identification command and a power consumption capping threshold to the RRU in the base station by using communication with the base station, and receives a power capping success message from the RRU; the RRU includes work a power consumption detecting unit, a power consumption detecting unit, a power consumption monitoring unit, and a power amplifying unit; wherein the power amplifying unit is configured to implement amplification of radio frequency power; and the power consumption detecting unit obtains power consumption by detecting the power amplifying unit The power consumption of the RRU is provided to the power consumption monitoring unit; the power consumption monitoring unit is configured to calculate a power consumption value of the RRU according to the detection result of the power consumption detecting unit, and provide the a power consumption control unit; the power consumption control unit is configured to control power consumption of the power amplifying unit according to the power consumption capping identification command and the power consumption capping threshold sent by the external, so that the RRU is controlled The power consumption value is not higher than the power consumption capping threshold. The specific embodiments of the RRU and its power consumption limiting method of the present invention and the corresponding B SC have been described above. However, those skilled in the art will appreciate that these embodiments are merely exemplary. Those skilled in the art will also be able to adapt the present invention to other units in a mobile communication system, such as for power consumption of a base transceiver station (BTS) and/or a baseband processing unit (BBU), under the teachings of the above-described embodiments. The method of capping control will not be described in detail in this article. A person skilled in the art will further appreciate that the elements and algorithm steps of the various examples described in connection with the embodiments disclosed herein can be implemented in electronic hardware, computer software or a combination of both, in order to clearly illustrate hardware and software. Interchangeability, the composition and steps of the various examples have been generally described in terms of function in the above description. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the solution. A person skilled in the art can use different methods to implement the described functions for each particular application, but such implementation should not be considered to be beyond the scope of the embodiments of the invention. The steps of a method or algorithm described in connection with the embodiments disclosed herein can be implemented directly in hardware, a software module executed by a processor, or a combination of both. The software module can be placed in random access memory (RAM), memory, read only memory (ROM), electrically programmable ROM, electrically erasable programmable ROM, registers, hard disk, removable disk, CD-ROM, or technical field. Any other form of storage medium known. The above description of the disclosed embodiments enables those skilled in the art to make or use the embodiments of the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the embodiments of the invention. . Therefore, the embodiments of the present invention are not to be limited to the embodiments shown herein, but are to be accorded to the broadest scope of the principles and novel features disclosed herein.

The embodiment, any modifications, equivalents, improvements, etc., which are within the spirit and scope of the embodiments of the present invention, are included in the scope of the present invention.

Claims

Claim

A remote radio unit RRU, comprising: a power amplifying unit, configured to implement amplification of radio frequency power;

a power consumption detecting unit, which acquires power consumption of the RRU by detecting power consumption of the power amplifying unit, and supplies the detection result to a power consumption monitoring unit; a power consumption monitoring unit, wherein the power consumption monitoring unit is configured to The detection result of the power consumption detecting unit calculates the power consumption value of the RRU and provides the power consumption control unit to the power consumption control unit, and the power consumption control unit is configured to use the power consumption capping identification command and the power consumption capping threshold value according to the external transmission. When the power capping identifier is valid, the power consumption of the power amplifying unit is controlled such that the power consumption value of the RRU is not higher than the power capping threshold.

The RRU according to claim 1, wherein: the power consumption control unit stores a power consumption capping flag whose initial value is invalid.

The RRU according to claim 1, wherein the power consumption control unit is further configured to: after the power capping identifier is successfully set, send a power consumption capping setting success message to the outside.

4. The RRU according to claim 1, further comprising a power management unit, the power management unit being connected between the power consumption detecting unit and each unit inside the RRU, for each of the internals of the RRU Unit power supply.

A base station controller BSC, comprising: a power consumption capping setting unit, wherein the power consumption capping setting unit is configured to set a remote radio frequency unit

The RRU sends a power capping command and a power capping threshold, and receives a power capping success message from the RRU.

A power consumption limiting method for a remote radio unit RRU, comprising: acquiring a power consumption value of the RRU; receiving an externally transmitted power capping identification command and a power consumption capping threshold, when the power capping flag is valid And controlling, by the RRU, a power consumption value that is not higher than the power consumption capping threshold.

The method according to claim 6, wherein the power consumption value of the RRU is obtained. Specifically include:

Detecting power consumption of the power amplifying unit in the RRU;

The power consumption value of the power amplifying unit is used as the power consumption value of the RRU.

The method according to claim 6, wherein the method further comprises: presetting the power consumption capping identifier whose initial value is invalid;

The power capping flag is set to be valid according to the received power capping identification command.

The method according to claim 8, wherein the controlling the power consumption value of the RRU to be not higher than the power consumption capping threshold comprises:

Comparing a power consumption value of the RRU with a size of the power consumption capping threshold;

When the power consumption value of the RRU is greater than the power consumption capping threshold, reducing the power consumption value of the RRU;

Recalculating the power consumption value of the RRU and the power consumption capping threshold until the power consumption value of the RRU is less than or equal to the power consumption capping threshold.

The method according to claim 6, wherein the method further comprises: after the power capping identifier is successfully set, the external power consumption capping setting is successfully cancelled.