Carrier turn-off method and device and storage medium

Abstract

The invention provides a carrier turn-off method, and relates to the technical field of communication. According to the specific implementation scheme, a first message sent by a baseband processing unit (BBU) is received, and the first message is used for indicating a first carrier turn-off condition corresponding to a first cell; detecting first uplink signal power corresponding to a first carrier in response to the fact that the current moment is located in the carrier energy-saving effective time corresponding to the first cell, the first carrier being a carrier configured by the target indoor distribution RRU for the first cell; and when it is determined that the first uplink signal power satisfies the first carrier turn-off condition, performing carrier turn-off on the first carrier. Therefore, each indoor distribution RRU can independently judge whether to turn off the carrier configured for the first cell or not, RRU-level carrier turn-off is achieved, and resources of the indoor distribution RRU are saved.

Description

Technical Field

[0001] This application relates to the field of communication technologies, and in particular, to a carrier shutdown method, apparatus, and storage medium. Background Art

[0002] In the related art, the indoor distribution system is limited by the distribution environment. Usually, multiple indoor distributed radio remote units (RRUs) carry the same cell. If there is only traffic under a certain indoor distributed RRU in the cell and the traffic volume is above the low threshold, even if the entire cell is in the energy-saving time, all indoor distributed RRUs corresponding to the cell cannot perform carrier shutdown, resulting in the inability of the indoor distributed RRUs to save energy and causing waste of resources. Summary of the Invention

[0003] A first aspect embodiment of this application proposes a carrier shutdown method, which is executed by a target indoor distributed radio remote unit (RRU). The method includes:

[0004] Receiving a first message sent by a baseband processing unit (BBU), where the first message is used to indicate a first carrier shutdown condition corresponding to a first cell;

[0005] In response to the current moment being within the carrier energy-saving effective time corresponding to the first cell, detecting a first uplink signal power corresponding to a first carrier, where the first carrier is a carrier configured by the target indoor distributed RRU for the first cell;

[0006] When it is determined that the first uplink signal power meets the first carrier shutdown condition, performing carrier shutdown on the first carrier.

[0007] Optionally, the first uplink signal power includes at least one of the following:

[0008] A first power corresponding to a physical random access channel (PRACH) signal;

[0009] A second power corresponding to an uplink sounding reference signal (SRS).

[0010] Optionally, the detecting the first uplink signal power corresponding to the first carrier includes:

[0011] Detecting the first power corresponding to the PRACH signal based on the time-frequency domain information corresponding to the PRACH signal;

[0012] Detecting the second power corresponding to the SRS based on the time domain information corresponding to the SRS.

[0013] Optionally, before the detecting the first uplink signal power corresponding to the first carrier, it further includes:

[0014] Receive a second message sent by the BBU, where the second message is used to indicate the time-frequency domain information corresponding to the PRACH signal and the time domain information corresponding to the SRS.

[0015] Optionally, the first carrier shutdown condition includes at least one of the following:

[0016] The first power threshold corresponding to the PRACH signal;

[0017] The second power threshold corresponding to the SRS;

[0018] The first duration threshold corresponding to the PRACH signal;

[0019] The second duration threshold corresponding to the SRS.

[0020] Optionally, when the first uplink signal power includes the first power and the second power, determining that the first uplink signal power meets the first carrier shutdown condition includes:

[0021] When the first power is less than the first power threshold and the second power is less than the second power threshold, determining that the first uplink signal power meets the first carrier shutdown condition; or,

[0022] When the duration for which the first power is less than the first power threshold is greater than the first duration threshold and the duration for which the second power is less than the second power threshold is greater than the second duration threshold, determining that the first uplink signal power meets the first carrier shutdown condition.

[0023] Optionally, it further includes:

[0024] In response to the existence of a second carrier corresponding to a second cell in the same frequency band of any radio frequency channel where the first carrier is located and the current time being within the carrier energy-saving effective time corresponding to the second cell, detecting the second uplink signal power corresponding to the second carrier configured for the target indoor distributed RRU by the second cell;

[0025] In response to the first uplink signal power meeting the first carrier shutdown condition corresponding to the first cell, the second uplink signal power meeting the second carrier shutdown condition corresponding to the second cell, and there being no other carriers except the first carrier and the second carrier in each radio frequency channel where the second carrier is located, shutting down all radio frequency channels where the first carrier and the second carrier are located.

[0026] Optionally, determining that the current time is within the carrier energy-saving effective time corresponding to the first cell includes:

[0027] In the case of receiving the third message sent by the BBU, it is determined that the current moment is within the carrier energy-saving effective time corresponding to the first cell, where the third message is used to instruct the target indoor distributed RRU to set the carrier-off switch corresponding to the first carrier to on.

[0028] Optionally, the detecting the first uplink signal power corresponding to the first carrier includes:

[0029] In the case of not receiving the fourth message, the first uplink signal power corresponding to the first carrier is detected, where the fourth message is used to instruct all indoor distributed RRUs carrying the first cell to perform carrier-off on the first cell.

[0030] Optionally, after performing carrier-off on the first carrier, it further includes:

[0031] Sending a fifth message to the BBU, where the fifth message is used to instruct the target indoor distributed RRU to successfully turn off the first carrier;

[0032] In response to receiving the sixth message sent by the BBU, the first carrier is activated; where the sixth message is sent by the BBU when it determines that the current traffic volume of the third cell with the same coverage is greater than the traffic volume threshold, and the sixth message is used to instruct the target indoor distributed RRU to activate the first carrier; and / or,

[0033] In response to receiving the seventh message sent by the BBU, the first carrier is activated; where the seventh message is sent by the BBU at the carrier-off wake-up time corresponding to the first cell, and the seventh message is used to instruct the target indoor distributed RRU to activate the first carrier and set the carrier-off switch corresponding to the first carrier to off;

[0034] Optionally, after receiving the sixth message sent by the BBU and activating the first carrier, it further includes:

[0035] Return to perform the operation of detecting the first uplink signal power corresponding to the first carrier until the first carrier is turned off again or the seventh message sent by the BBU is received.

[0036] An embodiment of the second aspect of the present application proposes a carrier-off method, which is executed by a baseband processing unit BBU, and the method includes:

[0037] Determine the first carrier-off condition corresponding to the first cell;

[0038] When the target indoor distributed RRU is connected to the first cell, send a first message to the target indoor distributed RRU, where the first message is used to indicate the first carrier shutdown condition, and the first carrier shutdown condition is used for the target indoor distributed RRU to perform carrier shutdown on the first carrier when it determines that the first uplink signal power corresponding to the first carrier meets the first carrier shutdown condition, and the first carrier is the carrier configured by the target indoor distributed RRU for the first cell.

[0039] Optionally, the first carrier shutdown condition includes at least one of the following:

[0040] The first power threshold corresponding to the PRACH signal;

[0041] The second power threshold corresponding to the SRS;

[0042] The first duration threshold corresponding to the PRACH signal;

[0043] The second duration threshold corresponding to the SRS.

[0044] Optionally, it further includes:

[0045] When the target indoor distributed RRU is connected to the first cell, send a second message to the target indoor distributed RRU, where the second message is used to indicate the time-frequency domain information corresponding to the PRACH signal and the time domain information corresponding to the SRS.

[0046] Optionally, after sending the first message to the target indoor distributed RRU, it further includes:

[0047] When it is determined that the current time is within the carrier energy-saving effective time corresponding to the first cell, send a third message to all indoor distributed RRUs carrying the first cell, where the third message is used to instruct all indoor distributed RRUs to set the carrier shutdown switches corresponding to the carriers configured for the first cell to on.

[0048] Optionally, it further includes:

[0049] Receive a fifth message sent by the target indoor distributed RRU, where the fifth message is used to indicate that the target indoor distributed RRU has successfully shut down the first carrier, and the first carrier is the carrier configured by the target indoor distributed RRU for the first cell.

[0050] Optionally, after receiving the fifth message sent by the target indoor distributed RRU, it further includes:

[0051] When the target distributed RRU for the RRU is the first to send the fifth message among all the distributed RRUs, an eighth message is sent to the base station high layer HL, where the eighth message is used to instruct the HL to prohibit the terminal device from accessing or handing over to the first cell.

[0052] Optionally, it further includes:

[0053] When it is determined that the current traffic volume of the third cell with the same coverage as the first cell is greater than the traffic volume threshold, a sixth message is sent to all the distributed RRUs, where the sixth message is used to instruct all the distributed RRUs to activate the carrier configured for the first cell; and / or,

[0054] At the carrier shutdown wake-up time corresponding to the first cell, a seventh message is sent to the bearer of all the distributed RRUs, where the seventh message is used to instruct all the distributed RRUs to activate the carrier configured for the first cell respectively and set the carrier shutdown switch to off.

[0055] An embodiment of the third aspect of the present application proposes a carrier shutdown device, which is configured on the side of the target distributed RRU and includes:

[0056] A receiving module, configured to receive a first message sent by a baseband processing unit BBU, where the first message is used to indicate a first carrier shutdown condition corresponding to a first cell;

[0057] A detection module, configured to detect a first uplink signal power corresponding to a first carrier in response to the current moment being within the carrier energy saving effective time corresponding to the first cell, where the first carrier is the carrier configured by the target distributed RRU for the first cell;

[0058] A processing module, configured to perform carrier shutdown on the first carrier when it is determined that the first uplink signal power meets the first carrier shutdown condition.

[0059] Optionally, the first uplink signal power includes at least one of the following:

[0060] A first power corresponding to a physical random access channel PRACH signal;

[0061] A second power corresponding to an uplink sounding reference signal SRS.

[0062] Optionally, the detection module is configured to:

[0063] Detect the first power corresponding to the PRACH signal based on the time-frequency domain information corresponding to the PRACH signal;

[0064] Detect the second power corresponding to the SRS based on the time domain information corresponding to the SRS.

[0065] Optionally, the receiving module is further configured to:

[0066] Receive a second message sent by the BBU, where the second message is used to indicate the time-frequency domain information corresponding to the PRACH signal and the time domain information corresponding to the SRS.

[0067] Optionally, the first carrier shutdown condition includes at least one of the following:

[0068] The first power threshold corresponding to the PRACH signal;

[0069] The second power threshold corresponding to the SRS;

[0070] The first duration threshold corresponding to the PRACH signal;

[0071] The second duration threshold corresponding to the SRS.

[0072] Optionally, the processing module is configured to:

[0073] When the first power is less than the first power threshold and the second power is less than the second power threshold, determine that the first uplink signal power meets the first carrier shutdown condition; or,

[0074] When the duration for which the first power is less than the first power threshold is greater than the first duration threshold and the duration for which the second power is less than the second power threshold is greater than the second duration threshold, determine that the first uplink signal power meets the first carrier shutdown condition.

[0075] Optionally, the detection module is further configured to:

[0076] In response to the presence of a second carrier corresponding to a second cell in the same frequency band of any radio frequency channel where the first carrier is located and the current time being within the carrier energy saving effective time corresponding to the second cell, detect the second uplink signal power corresponding to the second carrier configured for the target in-building RRU by the second cell;

[0077] In response to the first uplink signal power meeting the first carrier shutdown condition corresponding to the first cell, the second uplink signal power meeting the second carrier shutdown condition corresponding to the second cell, and no other carriers except the first carrier and the second carrier existing in each radio frequency channel where the second carrier is located, shut down all radio frequency channels where the first carrier and the second carrier are located.

[0078] Optionally, the detection module is further configured to:

[0079] In the case of receiving the third message sent by the BBU, it is determined that the current moment is within the carrier power saving effective time corresponding to the first cell, where the third message is used to instruct the target distributed RRU to set the carrier off switch corresponding to the first carrier to on.

[0080] Optionally, the detection module is further configured to:

[0081] In the case of not receiving the fourth message, detect the first uplink signal power corresponding to the first carrier, where the fourth message is used to instruct all distributed RRUs carrying the first cell to perform carrier shutdown on the first cell.

[0082] Optionally, it further includes an activation module, configured to:

[0083] Send a fifth message to the BBU, where the fifth message is used to instruct the target distributed RRU to successfully turn off the first carrier;

[0084] In response to receiving the sixth message sent by the BBU, activate the first carrier; where the sixth message is sent by the BBU when it determines that the current traffic volume of the third cell with the same coverage is greater than the traffic volume threshold, and the sixth message is used to instruct the target distributed RRU to activate the first carrier; and / or,

[0085] In response to receiving the seventh message sent by the BBU, activate the first carrier; where the seventh message is sent by the BBU at the carrier shutdown wake-up time corresponding to the first cell, and the seventh message is used to instruct the target distributed RRU to activate the first carrier and set the carrier off switch corresponding to the first carrier to off.

[0086] Optionally, the detection module is configured to:

[0087] Return to perform the operation of detecting the first uplink signal power corresponding to the first carrier until the first carrier is turned off again, or the seventh message sent by the BBU is received.

[0088] An embodiment of the fourth aspect of the present application provides a carrier shutdown device, characterized in that it is on the baseband processing unit BBU side, and includes:

[0089] A determination module, configured to determine the first carrier shutdown condition corresponding to the first cell;

[0090] A sending module, configured to send a first message to the target distributed RRU when the target distributed RRU accesses the first cell, where the first message is used to indicate a first carrier shutdown condition, and the first carrier shutdown condition is used for the target distributed RRU to perform carrier shutdown on the first carrier when it is determined that the first uplink signal power corresponding to the first carrier satisfies the first carrier shutdown condition, and the first carrier is a carrier configured by the target distributed RRU for the first cell.

[0091] Optionally, the first carrier shutdown condition includes at least one of the following:

[0092] A first power threshold corresponding to a PRACH signal;

[0093] A second power threshold corresponding to an SRS;

[0094] A first duration threshold corresponding to the PRACH signal;

[0095] A second duration threshold corresponding to the SRS.

[0096] Optionally, the sending module is further configured to:

[0097] Send a second message to the target distributed RRU when the target distributed RRU accesses the first cell, where the second message is used to indicate the time-frequency domain information corresponding to the PRACH signal and the time domain information corresponding to the SRS.

[0098] Optionally, the sending module is further configured to:

[0099] Send a third message to all distributed RRUs carrying the first cell when it is determined that the current moment is within the carrier energy-saving effective time corresponding to the first cell, where the third message is used to indicate that all the distributed RRUs respectively set the carrier shutdown switch corresponding to the carrier configured for the first cell to on.

[0100] Optionally, it further includes a receiving module, configured to:

[0101] Receive a fifth message sent by the target distributed RRU, where the fifth message is used to indicate that the target distributed RRU has successfully shut down the first carrier, and the first carrier is a carrier configured by the target distributed RRU for the first cell.

[0102] Optionally, the sending module is further configured to:

[0103] When the target distributed RRU for indoor coverage is the first one among all the distributed RRUs for indoor coverage to send the fifth message, an eighth message is sent to the high layer (HL) of the base station, where the eighth message is used to instruct the HL to prohibit the terminal device from accessing or handing over to the first cell.

[0104] Optionally, the sending module is further configured to:

[0105] When it is determined that the current traffic volume of a third cell with the same coverage as the first cell is greater than a traffic volume threshold, a sixth message is sent to all the distributed RRUs for indoor coverage, where the sixth message is used to instruct all the distributed RRUs for indoor coverage to activate the carrier configured for the first cell; and / or,

[0106] At the carrier shutdown wake-up time corresponding to the first cell, a seventh message is sent to the bearer of all the distributed RRUs for indoor coverage, where the seventh message is used to instruct all the distributed RRUs for indoor coverage to respectively activate the carrier configured for the first cell and set the carrier shutdown switch to off.

[0107] An embodiment of the fifth aspect of the present application provides a target distributed RRU for indoor coverage, characterized in that the target distributed RRU for indoor coverage includes a memory, a transceiver, and a processor; the memory is used to store a computer program; the transceiver is used to send and receive data under the control of the processor; the processor is used to read the computer program in the memory and execute the carrier shutdown method described in the embodiment of the first aspect above.

[0108] An embodiment of the sixth aspect of the present application provides a baseband processing unit (BBU), characterized in that the BBU includes a memory, a transceiver, and a processor; the memory is used to store a computer program; the transceiver is used to send and receive data under the control of the processor; the processor is used to read the computer program in the memory and execute the carrier shutdown method described in the embodiment of the second aspect above.

[0109] An embodiment of the seventh aspect of the present application provides a processor-readable storage medium, where the processor-readable storage medium stores a computer program, and the computer program is used to cause the processor to execute the carrier shutdown method described in the above embodiments.

[0110] An embodiment of the eighth aspect of the present application provides a computer program product, including a computer program, where when the computer program is executed by a processor, the carrier shutdown method described in the above embodiments is implemented.

[0111] The present application has the following technical effects:

[0112] In the embodiments of the present application, a carrier shutdown method is proposed. During the carrier energy-saving effective time corresponding to the first cell, the distributed RRU carrying the first cell detects the first uplink signal power corresponding to the first carrier configured for the first cell, and when the first uplink signal power meets the first carrier shutdown condition, the carrier shutdown is performed on the first carrier. Thus, each distributed RRU can independently determine whether to shut down the carrier configured for the first cell, achieving RRU-level carrier shutdown and saving the resources of the distributed RRU.

[0113] It should be understood that the content described in this part is not intended to identify the key or important features of the embodiments of the present application, nor is it used to limit the scope of the present application. Other features of the present application will become easily understood through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0114] The above and / or additional aspects and advantages of the present application will become obvious and easily understood from the following description of the embodiments in conjunction with the drawings, where:

[0115] Figure 1 It is a schematic flowchart of a carrier shutdown method provided by an embodiment of the present application;

[0116] Figure 2 It is a schematic flowchart of a carrier shutdown method provided by an embodiment of the present application;

[0117] Figure 3 It is a schematic flowchart of a carrier shutdown method provided by an embodiment of the present application;

[0118] Figure 4 It is a schematic flowchart of a carrier shutdown method provided by an embodiment of the present application;

[0119] Figure 5 It is a schematic flowchart of a carrier shutdown method provided by an embodiment of the present application;

[0120] Figure 6 It is a schematic flowchart of a carrier shutdown method provided by an embodiment of the present application;

[0121] Figure 7 It is an interaction schematic diagram of a carrier shutdown method provided by an embodiment of the present application;

[0122] Figure 8 It is an interaction schematic diagram of a carrier shutdown method provided by an embodiment of the present application;

[0123] Figure 9 It is a schematic structural diagram of a carrier shutdown device provided by an embodiment of the present application;

[0124] Figure 10Schematic structural diagram of a carrier shutdown device provided by an embodiment of the present application;

[0125] Figure 11 Schematic structural diagram of a target in - building distributed radio frequency remote unit provided by an embodiment of the present application;

[0126] Figure 12 Schematic structural diagram of a baseband processing unit provided by an embodiment of the present application. Detailed implementation manners

[0127] The embodiments of the present application will be described in detail below. Examples of the embodiments are shown in the accompanying drawings, where the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to explain the present application, and should not be construed as limiting the present application.

[0128] The carrier shutdown energy - saving function is a radio - frequency energy - saving method that removes the power amplifier of the carrier of a cell on the RRU when the traffic volume at the cell level is low. Removing the power amplifier of the cell means de - activating the cell.

[0129] The conditions for cell - level carrier shutdown include:

[0130] (1) The time is within the set start and end times for carrier shutdown.

[0131] (2) The traffic volume of the cell is lower than the specified threshold (general) for entering carrier shutdown.

[0132] (3) The cell has the attribute of a capacity cell.

[0133] (4) There are co - system cells with a lower frequency - point priority that are not in a dormant state or there are 4G co - coverage energy - saving related neighboring cells.

[0134] In the related art, the BBU determines whether the traffic volume of the cell meets the carrier shutdown requirement according to whether the number of uplink physical resource blocks (physical random block, PRB), downlink PRB, and the number of connections in the radio resource control layer (radio resource control, RRC) in the cell is lower than the corresponding threshold values.

[0135] The in - building distribution system is limited by the distribution environment. Usually, multiple in - building distributed radio frequency remote units (remote radiounit, RRU) carry the same cell. If there is traffic only under a certain in - building RRU in the cell and the traffic volume is above the low threshold, even if the entire cell is within the energy - saving time, all the in - building RRUs corresponding to the cell cannot perform carrier shutdown, resulting in the inability of the in - building RRUs to save energy and causing waste of resources.

[0136] Therefore, the present application provides a carrier shutdown method. During the carrier energy saving effective time corresponding to the first cell, the distributed RRU carrying the first cell detects the first uplink signal power corresponding to the first carrier configured for the first cell, and when the first uplink signal power meets the first carrier shutdown condition, the first carrier is shut down. Thus, each distributed RRU can independently determine whether to shut down the carrier configured for the first cell, achieving RRU-level carrier shutdown, saving the resources of the distributed RRU, and eliminating the need for the BBU to judge the traffic volume of the first cell, reducing the workload of the BBU.

[0137] For the carrier shutdown method provided by the present application, since each distributed RRU carrying the first cell independently determines whether to shut down the carrier configured for the first cell, there is no limitation on the networking form of the distributed RRU, and it can be used in any distributed RRU networking scenario.

[0138] The following describes the carrier shutdown method, apparatus, and storage medium according to the embodiments of the present application with reference to the accompanying drawings.

[0139] Figure 1 It is a schematic flowchart of a carrier shutdown method provided by an embodiment of the present application.

[0140] The carrier shutdown method according to the embodiments of the present application can be applied to network devices, such as access network devices or the like.

[0141] Among them, a base station is taken as an example of the access network device. The base station may include multiple cells that provide services to terminal devices. Depending on specific application scenarios, the base station may also be referred to as an access point, or may be a device in the access network that communicates with wireless terminal devices through one or more sectors over the air interface, or other names. The access network device can be used to mutually replace the received air frames and Internet Protocol (IP) packets, and act as a router between the wireless terminal device and the rest of the access network, where the rest of the access network may include an IP communication network. The access network device can also coordinate the management of the attributes of the air interface. For example, the access network device involved in the embodiments of the present application can be an evolved access network device (eNB or e-NodeB) in a long term evolution (LTE) system, a 5G base station (gNB) in a 5G network architecture (next generation system), or can also be a Home evolved Node B (HeNB), a relay node, a femto, a pico, etc., which is not limited in the embodiments of the present application. In some network architectures, the base station may include a Centralized Unit (CU) node and a Distributed Unit (DU) node, and the centralized unit and the distributed unit may also be geographically separated.

[0142] The network device may include a remote radio unit (RRU) for in-building distribution and a Building Base band Unit (BBU).

[0143] The in-building RRU is a radio frequency processing device dedicated to in-building coverage. Compared with traditional base stations, it has the advantages of small size, low power consumption, and convenient installation, and can meet the requirements of in-building coverage. It can receive the digital signals sent by the BBU, convert them into radio frequency signals suitable for in-building coverage and send them out, or receive the radio frequency signals in the building and convert them into digital signals and send them back to the BBU. The in-building RRU can be, for example, a Pico remote radio unit (pRRU).

[0144] The BBU is usually located in the machine room or data center of the network device and is responsible for operations such as digital signal processing, encoding / decoding, modulation / demodulation, etc. It receives the data stream from the core network, processes it and then sends it to the corresponding in-building RRU, or receives the digital signals from the in-building RRU for decoding and processing.

[0145] Among them, the terminal device can be a device that provides voice and / or data connectivity to the user, such as a handheld device with wireless connection function, or other processing devices connected to a wireless modem. In different systems, the name of the terminal device may also be different. For example, in a 5G system, the terminal device can be called a User Equipment (UE for short). Among them, the wired terminal device can be a mobile terminal device, such as a mobile phone (or called a "cellular" phone) and a computer with a mobile terminal device. For example, it can be a portable, pocket-sized, handheld, computer-integrated or vehicle-mounted mobile device, which exchanges language and / or data with the radio access network. For example, devices such as Personal Communication Service (PCS) phones, cordless phones, Session Initiated Protocol (SIP) phones, Wireless Local Loop (WLL) stations, and Personal Digital Assistant (PDA). The wireless terminal device can also be called a system, a subscriber unit, a subscriber station, a mobile station, a mobile, a remote station, an access point, a remote terminal device, an access terminal device, a user terminal device, a user agent, a user device, which is not limited in the embodiments of the present application.

[0146] Taking the carrier shutdown method being executed by the target distributed RRU as an example, the carrier shutdown method provided by the present application will be described in detail. Among them, the target distributed RRU can be any one of the distributed RRUs that carry all the distributed RRUs of the first cell.

[0147] As Figure 1 shown, the carrier shutdown method includes:

[0148] Step 101, receive a first message sent by the baseband processing unit BBU, where the first message is used to indicate the first carrier shutdown condition corresponding to the first cell.

[0149] Among them, the first cell has the capacity cell attribute. For example, the first cell can be a capacity cell or a capacity coverage cell. The first cell can be carried by multiple distributed RRUs.

[0150] Among them, the first carrier shutdown condition is used to determine whether to shut down the carriers configured for the first cell for each distributed RRU (Remote Radio Unit) carrying the first cell. The first carrier shutdown condition is determined by the baseband processing unit (BBU) and sent to each distributed RRU carrying the first cell.

[0151] Optionally, the first carrier shutdown condition may include at least one of the following:

[0152] The first power threshold corresponding to the Physical Random Access Channel (PRACH) signal;

[0153] The second power threshold corresponding to the sounding reference signal (SRS) in the uplink;

[0154] The first duration threshold corresponding to the PRACH signal;

[0155] The second duration threshold corresponding to the SRS.

[0156] In some embodiments, the value ranges corresponding to the first power threshold and the second power threshold may be different or the same. For example, the value ranges corresponding to the first power threshold and the second power threshold may both be -80 - 120 (dBm), where dBm is the abbreviation of decibel relative to one milliwatt. The value of the first power threshold and the value of the second power threshold may be the same or different, and the present disclosure does not limit this.

[0157] In some embodiments, the value ranges corresponding to the first duration threshold and the second duration threshold may be different or the same. For example, the value ranges corresponding to the first duration threshold and the second duration threshold may both be 1 - 5000 (ms), where ms is the abbreviation of millisecond. The value of the first duration threshold and the value of the second duration threshold may be the same or different, and the present disclosure does not limit this.

[0158] In some embodiments, the first carrier shutdown condition supports dynamic configuration when the first cell is activated, that is, it can be immediately configured to the distributed RRU carrying the first cell when there is an addition, deletion, or modification. During the carrier energy saving effective time corresponding to the first cell, the first carrier shutdown condition is prohibited from being modified.

[0159] Step 102, in response to the current moment being within the carrier energy saving effective time corresponding to the first cell, detect the first uplink signal power corresponding to the first carrier, where the first carrier is the carrier configured by the target distributed RRU for the first cell.

[0160] Among them, the carrier energy saving effective time corresponding to the first cell can be pre-configured for the target distributed RRU. It can also be that the BBU sends a message to the target distributed RRU to tell all the distributed RRUs carrying the first cell that the current moment is the carrier energy saving effective time corresponding to the first cell.

[0161] In some embodiments, the carrier energy saving effective time can be a time or time period agreed upon by the protocol, or can also be a time determined after prior negotiation between the base station and the terminal device, etc. The present disclosure does not limit this.

[0162] Optionally, the first uplink signal power may include at least one of the following:

[0163] The first power corresponding to the physical random access channel (PRACH) signal;

[0164] The second power corresponding to the sounding reference signal (SRS) for uplink.

[0165] In some embodiments, the target distributed RRU may detect the first power corresponding to the PRACH signal based on the time-frequency domain information corresponding to the PRACH signal, and detect the second power corresponding to the SRS based on the time domain information corresponding to the SRS. Thereby improving the accuracy of the obtained first uplink signal power.

[0166] Among them, the time-frequency domain information corresponding to the PRACH signal and the time domain information corresponding to the SRS can be pre-configured by the BBU for the target distributed RRU.

[0167] Optionally, the target distributed RRU may receive a second message sent by the BBU, where the second message is used to indicate the time-frequency domain information corresponding to the PRACH signal and the time domain information corresponding to the SRS.

[0168] In some embodiments, the BBU may also configure the time-frequency domain information corresponding to the PRACH signal and the time domain information corresponding to the SRS for the target distributed RRU through a first message. That is, the first carrier shutdown condition, the time-frequency domain information corresponding to the PRACH signal, and the time domain information corresponding to the SRS can be configured for the target distributed RRU through the first message, thereby saving communication resources.

[0169] In some embodiments, the operation and maintenance module (OM) of the target distributed RRU configures the first carrier shutdown condition, the time-frequency domain information corresponding to the PRACH signal, and the time domain information corresponding to the SRS for the FPGA registers in the target distributed RRU that carry the first cell in sequence within the carrier energy saving effective time. The FPGA register group detects the first power corresponding to the PRACH signal and the second power corresponding to the SRS according to the time-frequency domain information corresponding to the PRACH signal and the time domain information corresponding to the SRS sent down.

[0170] In some embodiments, before the first power threshold and the second power threshold are sent to the FPGA register bank, the target indoor distributed RRU OM needs to convert the dBm value into a fixed-point linear value at the RE level and then configure it for the FPGA.

[0171] The method for converting the dBm value into a fixed-point linear value at the RE level can be:

[0172]

[0173] Where A is the RX calibration baseband amplitude of the target indoor distributed RRU, P is the RX reception calibration power of the target indoor distributed RRU, with the unit of dbm. A and P can be obtained by reading the calibration parameters of the corresponding frequency band channels of the target indoor distributed RRU; TH is the first power threshold or the second power threshold configured by the BBU, with the unit of dbm; the number of RBs is related to the first cell bandwidth.

[0174] Both floor(x) and log10(x) are C library functions. floor(x) returns the largest integer not greater than x, and log10(x) returns the base-10 logarithm of x.

[0175] In some embodiments, since the bandwidth of the PRACH channel is very narrow, the narrowband signal can be filtered out by frequency shifting and then the first power can be detected to avoid false detection. If the radio frequency channel is not a single carrier, multiple groups of filtering and frequency shifting processes are required.

[0176] In some embodiments, since multiple users may send SRS on different subbands, and it is difficult for the indoor distributed RRU side to obtain the SRS configuration information of each user in each Transmission Time Interval (TTI), and the actual transmission range of multi-user SRS is the full bandwidth, the power detection of SRS can adopt the scheme of directly counting the power on the full bandwidth.

[0177] In some embodiments, in the actual application of 2.6 GHz indoor distributed Time Division Duplexing (TDD) 100 Mega (M), the special subframe ratio can be 6:4:4, and SRS is sent at the time domain position corresponding to the last 4 symbols. Therefore, the power of the last 4 symbols can be averaged after adding according to the antenna data to obtain the power of SRS. For the 3.5 GHz frequency band, the special subframe ratio can be 10:2:2, and SRS is sent at the time domain position corresponding to the last 2 symbols. Therefore, the power of the last 2 symbols can be counted to obtain the power of SRS.

[0178] Step 103, when it is determined that the first uplink signal power meets the first carrier shutdown condition, perform carrier shutdown on the first carrier.

[0179] Optionally, when the first uplink signal power includes a first power and a second power, if the first power is less than a first power threshold and the second power is less than a second power threshold, it is determined that the first uplink signal power meets the first carrier shutdown condition.

[0180] In some embodiments, when the first uplink signal power includes a first power and a second power, if the duration during which the first power is less than the first power threshold is greater than a first duration threshold and the duration during which the second power is less than the second power threshold is greater than a second duration threshold, it is determined that the first uplink signal power meets the first carrier shutdown condition.

[0181] In some embodiments, when the first carrier shutdown condition includes a first power threshold and a first duration threshold corresponding to a PRACH signal and does not include a second power threshold and a second duration threshold corresponding to an SRS, if the duration during which the first power is less than the first power threshold is greater than the first duration threshold, it is determined that the first uplink signal power meets the first carrier shutdown condition.

[0182] In some embodiments, when the first carrier shutdown condition includes a second power threshold and a second duration threshold corresponding to an SRS and does not include a first power threshold and a first duration threshold corresponding to a PRACH signal, if the duration during which the second power is less than the second power threshold is greater than the second duration threshold, it is determined that the first uplink signal power meets the first carrier shutdown condition.

[0183] In the embodiments of the present application, the in-building RRU carrying the first cell detects the first uplink signal power corresponding to the first carrier configured for the first cell within the carrier energy-saving effective time corresponding to the first cell, and performs carrier shutdown on the first carrier when the first uplink signal power meets the first carrier shutdown condition. Thus, each in-building RRU can independently determine whether to shut down the carrier configured for the first cell, achieving RRU-level carrier shutdown and saving the resources of the in-building RRU.

[0184] The following Figure 2 Taking the carrier shutdown method being executed by the target in-building RRU as an example, the carrier shutdown method provided by the present application is further described in detail. Figure 2 It is a schematic flowchart of a carrier shutdown method provided by an embodiment of the present application.

[0185] As Figure 2 shown, the carrier shutdown method includes:

[0186] Step 201, receive a first message sent by a baseband processing unit BBU, where the first message is used to indicate a first carrier shutdown condition corresponding to a first cell.

[0187] Step 202: In response to the current moment being within the carrier energy-saving effective time corresponding to the first cell, detect the first uplink signal power corresponding to the first carrier, where the first carrier is the carrier configured by the target distributed RRU for the first cell.

[0188] Among them, for the specific implementation forms of step 201 and step 202, reference can be made to the detailed descriptions in other embodiments of the present disclosure, and no specific elaboration will be provided here.

[0189] Step 203: In response to the presence of a second carrier corresponding to the second cell in the same frequency band of any radio frequency channel where the first carrier is located and the current moment being within the carrier energy-saving effective time corresponding to the second cell, detect the second uplink signal power corresponding to the second carrier configured by the target distributed RRU for the second cell.

[0190] In the embodiments of the present disclosure, since turning off the first carrier requires turning off the radio frequency channel where the first carrier is located, considering the dual-mode environment, a distributed RRU may carry 4G cells and 5G cells simultaneously. If there is a second carrier corresponding to the second cell in the same frequency band of any radio frequency channel where the first carrier is located, in order to avoid the situation of degrading the second cell due to directly turning off the radio frequency channel where the first carrier is located, the first carrier can be turned off only when the second carrier meets the corresponding carrier turn-off condition.

[0191] Therefore, if there is a second carrier corresponding to the second cell in the same frequency band of any radio frequency channel where the first carrier is located, it is necessary to determine whether the current moment is within the carrier energy-saving effective time corresponding to the second cell. When the second cell is also within the corresponding carrier energy-saving effective time, the second uplink signal power corresponding to the second carrier is detected.

[0192] Among them, the second cell may be other cells except the first cell in the radio frequency channel where the first carrier is located.

[0193] In some embodiments, in the radio frequency channels where the first carrier is located, there may be one or more radio frequency channels with carriers corresponding to the second cell. For example, the radio frequency channels where the first carrier is located are channel 1, channel 2, and channel 3; there may be a second cell other than the first carrier in each of channel 1, channel 2, and channel 3, or there may be a second carrier of the second cell in channel 1.

[0194] In some embodiments, when the current moment is within the carrier energy-saving effective times corresponding to the first cell and the second cell, the first carrier turn-off condition corresponding to the first cell and the second carrier turn-off condition corresponding to the second cell are sequentially configured to the FPGA carrying the corresponding cell. The FPGA register group can be defined according to the carrier numbers corresponding to each cell. Then, the FPGA detects the first uplink signal power corresponding to the first carrier and the second uplink signal power corresponding to the second carrier.

[0195] Step 204: In response to the first uplink signal power satisfying the first carrier shutdown condition corresponding to the first cell, the second uplink signal power satisfying the second carrier shutdown condition corresponding to the second cell, and there being no other carriers except the first carrier and the second carrier in each radio frequency channel where the second carrier is located, shut down all radio frequency channels where the first carrier and the second carrier are located.

[0196] For example, the radio frequency channels where the first carrier configured for the target in-building RRU for the first cell is located are Channel 1, Channel 2, and Channel 3; if there is a second carrier corresponding to the second cell under Channel 3, and the radio frequency channels where the second carrier corresponding to the second cell is located are Channel 3, Channel 4, and Channel 5, then when the first uplink signal power satisfies the first carrier shutdown condition corresponding to the first cell and the second uplink signal power satisfies the second carrier shutdown condition corresponding to the second cell, shut down Channel 1, Channel 2, Channel 3, Channel 4, and Channel 5.

[0197] In the embodiment of the present application, when there is a second carrier corresponding to the second cell in the same frequency band of any radio frequency channel where the first carrier configured for the first cell is located, and the current time is within the carrier energy-saving effective time corresponding to the second cell, detect the second uplink signal power corresponding to the second carrier configured for the target in-building RRU for the second cell. In response to the first uplink signal power satisfying the first carrier shutdown condition corresponding to the first cell, the second uplink signal power satisfying the second carrier shutdown condition corresponding to the second cell, and there being no other carriers except the first carrier and the second carrier in each radio frequency channel where the second carrier is located, shut down all radio frequency channels where the first carrier and the second carrier are located. Thus, the situation where the second cell degrades due to directly shutting down the radio frequency channel where the first carrier is located can be avoided.

[0198] Next, in combination with Figure 3 Taking the carrier shutdown method being executed by the target in-building RRU as an example, the carrier shutdown method provided by the present application will be further described in detail. Figure 3 It is a schematic flowchart of a carrier shutdown method provided by an embodiment of the present application.

[0199] As Figure 3 shown, the carrier shutdown method includes:

[0200] Step 301: Receive a first message sent by a baseband processing unit (BBU), where the first message is used to indicate the first carrier shutdown condition corresponding to the first cell.

[0201] The specific implementation form of step 301 can refer to the detailed descriptions in other embodiments of the present disclosure, and will not be specifically elaborated here.

[0202] Step 302: When receiving the third message sent by the BBU, determine that the current moment is within the carrier energy saving effective time corresponding to the first cell, where the third message is used to instruct the target distributed RRU to set the carrier off switch corresponding to the first carrier to on.

[0203] In some embodiments, when the target distributed RRU accesses the first cell, the BBU may also configure an RRU-level carrier off switch for the target distributed RRU. The value of the carrier off switch can be 0 or 1. When the value is 0, it indicates that the carrier off switch is on. When the value is 1, it indicates that the carrier off switch is off.

[0204] Wherein, if the carrier off switch is on, it indicates that the first cell is in the carrier energy saving effective time. The target distributed RRU needs to continuously detect the first uplink signal power corresponding to the first carrier during the carrier energy saving effective time, and perform carrier off on the first carrier when the first uplink signal power meets the first carrier off condition.

[0205] In the embodiments of the present disclosure, when the BBU determines that the first cell enters the carrier energy saving effective time, it sends a third message to all distributed RRUs carrying the first cell, and all distributed RRUs set the carrier off switch corresponding to the first carrier to on.

[0206] Step 303: When not receiving the fourth message, detect the first uplink signal power corresponding to the first carrier, where the fourth message is used to instruct all distributed RRUs carrying the first cell to perform carrier off on the first cell.

[0207] In some embodiments, the fourth message is used to implement cell-level carrier off. That is, when the BBU sends the fourth message to all distributed RRUs carrying the first cell, all distributed RRUs do not need to determine whether the first uplink signal power meets the first carrier off condition and directly perform carrier off on the first cell. Therefore, the target distributed RRU only needs to detect the first uplink signal power corresponding to the first carrier when not receiving the fourth message, and perform carrier off on the first carrier when the first uplink signal power meets the first carrier off condition, so as to implement RRU-level carrier off.

[0208] Step 304: When determining that the first uplink signal power meets the first carrier off condition, perform carrier off on the first carrier.

[0209] The specific implementation form of step 304 can refer to the detailed descriptions in other embodiments of the present disclosure and will not be specifically elaborated here.

[0210] Step 305: Send a fifth message to the BBU, where the fifth message is used to indicate that the target distributed RRU has successfully turned off the first carrier.

[0211] In some embodiments, after the target distributed RRU determines that the first uplink signal power meets the first carrier shutdown condition and performs carrier shutdown on the first carrier, it may send a fifth message to the BBU to inform the BBU that the target distributed RRU has successfully shut down the first carrier.

[0212] Step 306: Activate the first carrier in response to receiving the seventh message sent by the BBU; wherein, the seventh message is sent by the BBU at the carrier shutdown wake-up time corresponding to the first cell, and the seventh message is used to instruct the target distributed RRU to activate the first carrier and set the carrier shutdown switch corresponding to the first carrier to off.

[0213] In some embodiments, the seventh message may also become an activation message.

[0214] In the embodiments of the present disclosure, when the carrier shutdown wake-up time corresponding to the first cell arrives, the BBU will send a seventh message to all distributed RRUs carrying the first cell, so that all distributed RRUs activate the carrier configured for the first cell and set the carrier shutdown switch to off.

[0215] In some embodiments, after activating the first carrier, a carrier shutdown wake-up reply may also be sent to the BBU to inform the BBU that the target distributed RRU has successfully woken up the first carrier.

[0216] In the embodiments of the present disclosure, after performing carrier shutdown on the first carrier, if the seventh message sent by the BBU at the carrier shutdown wake-up time corresponding to the first cell is received, the first carrier is activated and the carrier shutdown switch corresponding to the first carrier is set to off. Thus, the first cell can be activated in a timely manner within the carrier shutdown wake-up time of the first cell, thereby ensuring the performance and capacity of the first cell.

[0217] The following combines Figure 4 Taking the carrier shutdown method being executed by the target distributed RRU as an example, the carrier shutdown method provided by the present application will be further described in detail. Figure 4 It is a schematic flowchart of a carrier shutdown method provided by an embodiment of the present application.

[0218] As Figure 4 shown, the carrier shutdown method includes:

[0219] Step 401: Receive a first message sent by a baseband processing unit BBU, where the first message is used to indicate a first carrier shutdown condition corresponding to a first cell.

[0220] Step 402: In response to the current moment being within the carrier energy-saving effective time corresponding to the first cell, detect the first uplink signal power corresponding to the first carrier, where the first carrier is a carrier configured by the target distributed RRU for the first cell.

[0221] Step 403: When it is determined that the first uplink signal power meets the first carrier shutdown condition, perform carrier shutdown on the first carrier.

[0222] Step 404: Send a fifth message to the BBU, where the fifth message is used to indicate that the target distributed RRU has successfully shut down the first carrier.

[0223] Among them, the specific implementation forms of steps 401 to 405 can refer to the detailed descriptions in other embodiments of the present disclosure, and will not be specifically elaborated here.

[0224] Step 405: In response to receiving a sixth message sent by the BBU, activate the first carrier; where the sixth message is sent by the BBU when it is determined that the current traffic volume of the third cell with the same coverage is greater than the traffic volume threshold, and the sixth message is used to instruct the target distributed RRU to activate the first carrier.

[0225] In some embodiments, if the traffic volume of the third cell with the same coverage as the first cell is too large at the carrier energy-saving effective time corresponding to the first cell, the first cell can be activated, so that the terminal devices in the third cell can access the first cell, improving the service processing efficiency of the terminal devices and reducing the traffic volume of the third cell. Therefore, after receiving the sixth message, the target distributed RRU activates the first carrier.

[0226] In some embodiments, if the target distributed RRU is in a sleep state, the BBU first sends a wake-up message to the target distributed RRU, and then sends the sixth message, so as to instruct the target distributed RRU to activate the first carrier after waking up the target distributed RRU.

[0227] In some embodiments, if the target distributed RRU is powered off due to energy-saving reasons, after the target distributed RRU completes the access and wake-up processes, the first carrier is activated.

[0228] Step 406: Return to perform the operation of detecting the first uplink signal power corresponding to the first carrier until the first carrier is shut down again, or a seventh message sent by the BBU is received.

[0229] In some embodiments, after the target distributed RRU receives the sixth message or the seventh message, if the first cell is in an active state, check whether it is an over-time activation of carrier shutdown. If so, stop the energy-saving process. If the first cell is in a deactivated state, activate the first cell, and then check whether it is an over-time activation after activation. If so, stop the energy-saving process.

[0230] In an embodiment of the present disclosure, after the first carrier activated by the target indoor distributed RRU, if it is still within the carrier power saving effective time corresponding to the first cell, it is necessary to continue to detect the first uplink signal power corresponding to the first carrier, and when the first uplink signal power meets the first carrier shutdown condition, perform carrier shutdown on the first carrier until the seventh message is received, that is, the first cell is in the carrier shutdown wake-up time.

[0231] In an embodiment of the present disclosure, after performing carrier shutdown on the first carrier, if the sixth message sent by the BBU when determining that the current traffic volume of the third cell with the same coverage is greater than the traffic volume threshold is received, activate the first carrier and perform the operation of continuously detecting the first uplink signal power corresponding to the first carrier until the first carrier is shut down again, or the seventh message sent by the BBU is received. Thus, when the traffic volume of the third cell with the same coverage as the first cell is too large, the first cell can be activated in time so that the first cell can help process the traffic of the third cell, improving the traffic processing efficiency, and when the traffic volume of the first carrier is too low, the first carrier can be shut down in time to save the resources of the indoor distributed RRU.

[0232] The following combines Figure 5 Taking the carrier shutdown method being executed by the baseband processing unit as an example, the carrier shutdown method provided by the present application will be described in detail. Figure 5 It is a schematic flowchart of a carrier shutdown method provided by an embodiment of the present application.

[0233] As Figure 5 shown, the carrier shutdown method includes:

[0234] Step 501, determine the first carrier shutdown condition corresponding to the first cell.

[0235] Optionally, the first carrier shutdown condition may include at least one of the following:

[0236] The first power threshold corresponding to the PRACH signal;

[0237] The second power threshold corresponding to the SRS;

[0238] The first duration threshold corresponding to the PRACH signal;

[0239] The second duration threshold corresponding to the SRS.

[0240] In some embodiments, the value ranges corresponding to the first power threshold and the second power threshold may be different or the same. For example, the value ranges corresponding to the first power threshold and the second power threshold may both be -80 - 120 (dBm), where dBm is the abbreviation of decibel milliwatts. The value of the first power threshold and the value of the second power threshold may be the same or different, and the present disclosure does not make a limitation on this.

[0241] In some embodiments, the value ranges corresponding to the first duration threshold and the second duration threshold may be different or the same. For example, the value ranges corresponding to the first duration threshold and the second duration threshold may both be 1 - 5000 (ms), where ms is the abbreviation of millisecond. The value of the first duration threshold and the value of the second duration threshold may be the same or different, and the present disclosure does not limit this.

[0242] Step 502: When the target distributed RRU accesses the first cell, send a first message to the target distributed RRU, where the first message is used to indicate a first carrier shutdown condition, and the first carrier shutdown condition is used for the target distributed RRU to perform carrier shutdown on the first carrier when it determines that the first uplink signal power corresponding to the first carrier satisfies the first carrier shutdown condition, and the first carrier is a carrier configured by the target distributed RRU for the first cell.

[0243] In some embodiments, when the target distributed RRU accesses the first cell, the BBU sends a first message to the target distributed RRU. After receiving the first message, the target distributed RRU can determine the first carrier shutdown condition, and within the carrier energy saving effective time corresponding to the first cell, determine whether the first uplink signal power corresponding to the first carrier satisfies the first carrier shutdown condition, and perform carrier shutdown on the first carrier when the first uplink signal power satisfies the first carrier shutdown condition.

[0244] Specifically, when the first cell is established, the base station physical layer (PL) calls the PRACH function to obtain the frequency shift parameters of the PRACH, and notifies the operation and maintenance module (OM) of the BBU through an interface message. When the BBU OM receives the parameters reported by the PL, it sets the first cell instance to be valid, assigns the parameters corresponding to the first carrier shutdown condition, traverses all the distributed RRUs of the first cell, reads the first carrier shutdown condition, and configures it to the already accessed distributed RRUs.

[0245] Subsequently, when other pRRUs access the first cell, configure the first carrier shutdown condition corresponding to the first cell to the newly accessed pRRUs.

[0246] In some embodiments, when the first cell is deactivated, clear the parameter value corresponding to the first carrier shutdown condition, set it to the default value, and set the first cell instance to be invalid.

[0247] Optionally, when the target distributed RRU accesses the first cell, a second message is sent to the target distributed RRU, where the second message is used to indicate the time-frequency domain information corresponding to the PRACH signal and the time domain information corresponding to the SRS. Thus, the target distributed RRU can detect the first power corresponding to the PRACH signal based on the time-frequency domain information corresponding to the PRACH signal, and detect the second power corresponding to the SRS based on the time domain information corresponding to the SRS. Thereby, the accuracy of the first uplink signal power obtained by the target distributed RRU is improved.

[0248] In some embodiments, the BBU may also configure the time-frequency domain information corresponding to the PRACH signal and the time domain information corresponding to the SRS for the target distributed RRU through the first message. That is, the first carrier shutdown condition, the time-frequency domain information corresponding to the PRACH signal, and the time domain information corresponding to the SRS can be configured for the target distributed RRU through the first message, thereby saving communication resources.

[0249] In the embodiments of the present disclosure, when the target distributed RRU accesses the first cell, the BBU sends a first message to the target distributed RRU, so that the target distributed RRU detects the first uplink signal power corresponding to the first carrier within the carrier energy saving effective time corresponding to the first cell, and when it is determined that the first uplink signal power satisfies the first carrier shutdown condition, the first carrier is shut down. Thus, each distributed RRU can independently determine whether to shut down the carrier configured for the first cell, realizing RRU-level carrier shutdown, thereby saving resources of the distributed RRU.

[0250] The following combines Figure 6 Taking the carrier shutdown method being executed by the baseband processing unit as an example, the carrier shutdown method provided by the present application will be described in detail. Figure 6 It is a schematic flowchart of a carrier shutdown method provided by an embodiment of the present application.

[0251] As Figure 6 shown, the carrier shutdown method includes:

[0252] Step 601, determining the first carrier shutdown condition corresponding to the first cell.

[0253] Step 602, when the target distributed RRU accesses the first cell, sending a first message to the target distributed RRU, where the first message is used to indicate the first carrier shutdown condition, and the first carrier shutdown condition is used for the target distributed RRU to perform carrier shutdown on the first carrier when it is determined that the first uplink signal power corresponding to the first carrier satisfies the first carrier shutdown condition, and the first carrier is the carrier configured by the target distributed RRU for the first cell.

[0254] Among them, for the specific implementation forms of steps 601 to 602, reference can be made to the detailed descriptions in other embodiments of the present disclosure, and no specific elaboration will be given here.

[0255] Step 603, when it is determined that the current time is within the carrier energy-saving effective time corresponding to the first cell, send a third message to all in-building RRU bearing the first cell, where the third message is used to instruct each of the all in-building RRU to set the carrier-off switch corresponding to the carrier configured for the first cell to on.

[0256] In some embodiments, when the target in-building RRU accesses the first cell, the BBU can also configure an RRU-level carrier-off switch for the target in-building RRU. The value of the carrier-off switch can be 0 or 1. Among them, when the value is 0, it means the carrier-off switch is on, and when the value is 1, it means the carrier-off switch is off.

[0257] In the embodiments of the present disclosure, when the BBU determines that the first cell enters the carrier energy-saving effective time, it sends a third message to all in-building RRU bearing the first cell, instructing each of the all in-building RRU to set the carrier-off switch corresponding to the first carrier to on. That is, each of the all in-building RRU needs to detect whether the uplink signal power corresponding to the carrier configured for the first cell satisfies the first carrier-off condition, and when the first carrier-off condition is satisfied, turn off the carrier configured for the first cell, so as to achieve carrier-off at the RRU level.

[0258] Step 604, receive a fifth message sent by the target in-building RRU, where the fifth message is used to indicate that the target in-building RRU has successfully turned off the first carrier, where the first carrier is the carrier configured for the first cell by the target in-building RRU.

[0259] In some embodiments, after the target in-building RRU determines that the first uplink signal power satisfies the first carrier-off condition and performs carrier-off on the first carrier, it can send a fifth message to the BBU to tell the BBU that the target in-building RRU has successfully turned off the first carrier.

[0260] In some embodiments, each of the all in-building RRU bearing the first cell can send a fifth message to the BBU after turning off the carrier corresponding to the first cell.

[0261] Optionally, when the target in-building RRU is the first to send the fifth message among all the in-building RRU, send an eighth message to the base station high layer HL, where the eighth message is used to instruct HL to prohibit the terminal device from accessing or handing over to the first cell.

[0262] In the embodiments of the present disclosure, after the BBU receives the first fifth message sent by the distributed RRU carrying the first cell, it sends an eighth message to the high layer HL of the base station to prohibit the terminal device from accessing or handing over to the first cell. Thereby, it is possible to avoid adding new terminal devices when the first cell is in the energy-saving state, which affects the energy saving and KPI of the first cell.

[0263] In some embodiments, if there is a distributed RRU in the first cell that preferentially enters carrier shutdown, the degradation state of the first cell is not reported.

[0264] In some embodiments, when the BBU receives the first fifth message sent by the distributed RRU carrying the first cell, it can set the carrier shutdown state corresponding to the first cell to start energy saving and send an eighth message to the high layer HL of the base station to send a priority energy saving notification to HL.

[0265] In some embodiments, if the type of the currently deactivated first cell is a non-standalone (NSA) cell, a configuration update message can be sent to the X2 application protocol (X2AP); if it is a stand-alone (SA) cell, a configuration update message can be sent to the Xn application protocol (XnAP); if it is a composite cell, a configuration update message can be sent to both X2AP and XnAP, etc. The present disclosure does not limit this. Among them, the configuration update message may carry the deactivation field of the first cell information, and the deactivation field indicates that the first cell is in the deactivated state.

[0266] Step 605, in the case where it is determined that the current traffic volume of the third cell with the same coverage as the first cell is greater than the traffic volume threshold, send a sixth message to all distributed RRUs, where the sixth message is used to instruct all distributed RRUs to activate the carrier configured for the first cell.

[0267] In some embodiments, if the traffic volume of the third cell with the same coverage as the first cell is too large at the carrier energy saving effective time corresponding to the first cell, the first cell can be activated, so that the terminal devices of the third cell can access the first cell, improving the service processing efficiency of the terminal devices and reducing the traffic volume of the third cell.

[0268] In some embodiments, in the case of receiving an Xn / X2 cell activation request of the third cell, a sixth message is sent to all distributed RRUs. Among them, receiving the Xn / X2 cell activation request of the third cell indicates that the current traffic volume of the third cell is greater than the traffic volume threshold.

[0269] In some embodiments, when the BBU OM detects that the target distributed RRU is in the sleep state when activating the first cell, it first sends a wake-up message to the target distributed RRU. After the target distributed RRU is woken up, it instructs the target distributed RRU to activate the first carrier.

[0270] In some embodiments, when the BBU OM detects that the target distributed RRU is powered off due to energy saving reasons when activating the first cell, it first notifies the target distributed RRU to power on the corresponding Ethernet port. After the target distributed RRU completes the access and wake-up process, it activates the first carrier.

[0271] Step 606, at the carrier shutdown wake-up time corresponding to the first cell, send a seventh message to all distributed RRUs carried, where the seventh message is used to instruct all distributed RRUs to activate the carriers configured for the first cell respectively and set the carrier shutdown switch to off.

[0272] In the embodiments of the present disclosure, when the carrier shutdown wake-up time corresponding to the first cell arrives, the BBU will send a seventh message to all distributed RRUs carried by the first cell, so that all distributed RRUs activate the carriers configured for the first cell and set the carrier shutdown switch to off.

[0273] In some embodiments, when the BBU activates the first cell, if the carrier shutdown state is starting energy saving, considering that there may be distributed RRUs in the process of going to the activation process at this time, the BBU needs to send a cell activation message to all distributed RRUs of the first cell. At this time, if there are distributed RRUs that cannot activate the first cell, the first cell needs to report the degraded state. After all distributed RRUs activate the first cell, they reply with an Xn / X2 cell activation response (Xn / X2Cell Activation Response).

[0274] In some embodiments, after the first cell is activated, the carrier shutdown state corresponding to the first cell is not energy saving.

[0275] In the embodiments of the present disclosure, the BBU may send a sixth message to all distributed RRUs when the current traffic volume of the third cell with the same coverage as the first cell is greater than the traffic volume threshold, or send a seventh message to all distributed RRUs within the carrier shutdown wake-up time corresponding to the first cell, instructing all distributed RRUs to activate the carriers configured for the first cell, so that the BBU can activate the first cell in time when the traffic volume of the third cell with the same coverage is too large or the first cell reaches the carrier shutdown wake-up time.

[0276] Figure 7 It is an interaction schematic diagram of a carrier shutdown method provided by an embodiment of the present disclosure. As Figure 7 shown, the carrier shutdown method includes:

[0277] Step 701, when the target distributed RRU accesses the first cell, the BBU sends a first message and a second message to the target distributed RRU, where the first message is used to indicate the first carrier shutdown condition corresponding to the first cell.

[0278] In some embodiments, the first message and the second message can be sent simultaneously or sequentially, and there is no limitation in this regard.

[0279] Step 702, when the BBU determines that the current time is within the carrier energy-saving effective time corresponding to the first cell, the BBU sends a third message to all distributed RRUs, where the third message is used to indicate that the distributed RRU sets the carrier shutdown switch corresponding to the first carrier to on.

[0280] Step 703, the target distributed RRU determines whether it receives a fourth message. If it receives the fourth message, it executes step 706. If it does not receive the fourth message, it executes step 704.

[0281] Step 704, the target distributed RRU detects the first uplink signal power corresponding to the first carrier.

[0282] Step 705, the target distributed RRU determines whether the first uplink signal power meets the first carrier shutdown condition. If it meets the condition, it executes step 706. If it does not meet the condition, it executes step 704.

[0283] Step 706, the target distributed RRU performs carrier shutdown on the first carrier.

[0284] Step 707, the target distributed RRU sends a fifth message to the BBU, where the fifth message is used to indicate that the target distributed RRU has successfully shut down the first carrier.

[0285] Step 708, when the BBU receives the first fifth message, it sends an eighth message to the base station high layer HL, where the eighth message is used to indicate that the HL prohibits the terminal device from accessing or handing over to the first cell.

[0286] Step 709, the BBU sends a configuration update message to X2AP or XnA.

[0287] Figure 8 The interaction schematic diagram of a carrier shutdown method provided by an embodiment of the present disclosure is as Figure 8 shown. The carrier shutdown method includes:

[0288] Step 801, when the BBU determines that the current traffic volume of the third cell with the same coverage as the first cell is greater than the traffic volume threshold, the BBU sends a sixth message to all distributed RRUs, where the sixth message is used to indicate that all distributed RRUs activate the carrier configured for the first cell.

[0289] Step 802: The target distributed RRU of the cell site determines whether the first carrier corresponding to the first cell is deactivated. If so, step 803 is executed; if not, the process ends.

[0290] Step 803: The BBU determines whether the current time is within the carrier shutdown wake-up time corresponding to the first cell. If so, step 804 is executed; if not, the process ends.

[0291] Step 804: The BBU sends a seventh message to all distributed RRUs of the cell site carrying the first cell. The seventh message is used to instruct all distributed RRUs to activate the carriers configured for the first cell respectively and set the carrier shutdown switch to off.

[0292] Step 805: The target distributed RRU of the cell site activates the first carrier.

[0293] Step 806: The target distributed RRU of the cell site sends a carrier shutdown wake-up reply.

[0294] Step 807: The target distributed RRU of the cell site determines whether it is within the carrier energy-saving effective time corresponding to the first cell. If so, step 808 is executed; if not, the process ends.

[0295] Step 808: The target distributed RRU of the cell site detects the first uplink signal power corresponding to the first carrier, and executes carrier shutdown on the first carrier when the first uplink signal power meets the first carrier shutdown condition.

[0296] To implement the above embodiments, the present application also proposes a carrier shutdown device.

[0297] Figure 9 The figure is a schematic structural diagram of a carrier shutdown device provided by an embodiment of the present application. The carrier shutdown device is configured on the side of the target distributed radio remote unit of the cell site.

[0298] As Figure 9 shown, the carrier shutdown device 900 includes:

[0299] A receiving module 901, configured to receive a first message sent by a baseband processing unit (BBU), where the first message is used to indicate a first carrier shutdown condition corresponding to a first cell;

[0300] A detection module 902, configured to detect a first uplink signal power corresponding to a first carrier in response to the current time being within a carrier energy-saving effective time corresponding to the first cell, where the first carrier is a carrier configured by the target distributed RRU for the first cell;

[0301] A processing module 903, configured to execute carrier shutdown on the first carrier when it is determined that the first uplink signal power meets the first carrier shutdown condition.

[0302] Optionally, the first uplink signal power includes at least one of the following:

[0303] The first power corresponding to the Physical Random Access Channel (PRACH) signal;

[0304] The second power corresponding to the Sounding Reference Signal (SRS) for uplink.

[0305] Optionally, the detection module 902 is configured to:

[0306] Detect the first power corresponding to the PRACH signal based on the time-frequency domain information corresponding to the PRACH signal;

[0307] Detect the second power corresponding to the SRS based on the time domain information corresponding to the SRS.

[0308] Optionally, the receiving module 901 is further configured to:

[0309] Receive a second message sent by the BBU, where the second message is used to indicate the time-frequency domain information corresponding to the PRACH signal and the time domain information corresponding to the SRS.

[0310] Optionally, the first carrier shutdown condition includes at least one of the following:

[0311] The first power threshold corresponding to the PRACH signal;

[0312] The second power threshold corresponding to the SRS;

[0313] The first duration threshold corresponding to the PRACH signal;

[0314] The second duration threshold corresponding to the SRS.

[0315] Optionally, the processing module 903 is configured to:

[0316] Determine that the first uplink signal power meets the first carrier shutdown condition when the first power is less than the first power threshold and the second power is less than the second power threshold; or

[0317] Determine that the first uplink signal power meets the first carrier shutdown condition when the duration for which the first power is less than the first power threshold is greater than the first duration threshold and the duration for which the second power is less than the second power threshold is greater than the second duration threshold.

[0318] Optionally, the detection module 902 is further configured to:

[0319] In response to the presence of a second carrier corresponding to a second cell in the same frequency band of any radio frequency channel where the first carrier is located and the current time being within the carrier energy saving effective time corresponding to the second cell, detect the second uplink signal power corresponding to the second carrier configured for the second cell by the target distributed antenna remote unit (RRU);

[0320] In response to the first uplink signal power satisfying the first carrier shutdown condition corresponding to the first cell, the second uplink signal power satisfying the second carrier shutdown condition corresponding to the second cell, and there being no other carriers except the first carrier and the second carrier in each radio frequency channel where the second carrier is located, all radio frequency channels where the first carrier and the second carrier are located are shut down.

[0321] Optionally, the detection module 902 is further configured to:

[0322] When receiving the third message sent by the BBU, determine that the current time is within the carrier energy saving effective time corresponding to the first cell, where the third message is used to instruct the target distributed RRU to set the carrier shutdown switch corresponding to the first carrier to on.

[0323] Optionally, the detection module 902 is further configured to:

[0324] When not receiving the fourth message, detect the first uplink signal power corresponding to the first carrier, where the fourth message is used to instruct all distributed RRUs carrying the first cell to perform carrier shutdown on the first cell.

[0325] Optionally, it further includes an activation module, configured to:

[0326] Send a fifth message to the BBU, where the fifth message is used to instruct the target distributed RRU to successfully shut down the first carrier;

[0327] In response to receiving the sixth message sent by the BBU, activate the first carrier; where the sixth message is sent by the BBU when determining that the current traffic volume of the third cell with the same coverage is greater than the traffic volume threshold, and the sixth message is used to instruct the target distributed RRU to activate the first carrier; and / or,

[0328] In response to receiving the seventh message sent by the BBU, activate the first carrier; where the seventh message is sent by the BBU at the carrier shutdown wake-up time corresponding to the first cell, and the seventh message is used to instruct the target distributed RRU to activate the first carrier and set the carrier shutdown switch corresponding to the first carrier to off.

[0329] Optionally, the detection module 902 is configured to:

[0330] Return to perform the operation of detecting the first uplink signal power corresponding to the first carrier until the first carrier is shut down again or the seventh message sent by the BBU is received.

[0331] It should be noted here that the above device provided in the embodiments of the present application can implement all the method steps implemented in the above method embodiments and can achieve the same technical effects. Therefore, the same parts and beneficial effects as those in the method embodiments in this embodiment will not be specifically described herein.

[0332] Figure 10 This is a schematic structural diagram of a carrier shutdown device provided by an embodiment of the present application. The carrier shutdown device is configured on the baseband processing unit side.

[0333] As Figure 10 shown, the carrier shutdown device 1000 includes:

[0334] A determination module 1001, configured to determine a first carrier shutdown condition corresponding to a first cell.

[0335] A sending module 1002, configured to send a first message to a target distributed RRU when the target distributed RRU accesses the first cell. The first message is used to indicate the first carrier shutdown condition, and the first carrier shutdown condition is used for the target distributed RRU to perform carrier shutdown on a first carrier when it is determined that the first uplink signal power corresponding to the first carrier satisfies the first carrier shutdown condition. The first carrier is a carrier configured by the target distributed RRU for the first cell.

[0336] Optionally, the first carrier shutdown condition includes at least one of the following:

[0337] A first power threshold corresponding to a PRACH signal;

[0338] A second power threshold corresponding to an SRS;

[0339] A first duration threshold corresponding to a PRACH signal;

[0340] A second duration threshold corresponding to an SRS.

[0341] Optionally, the sending module 1002 is further configured to:

[0342] Send a second message to the target distributed RRU when the target distributed RRU accesses the first cell. The second message is used to indicate the time-frequency domain information corresponding to the PRACH signal and the time domain information corresponding to the SRS.

[0343] Optionally, the sending module 1002 is further configured to:

[0344] Send a third message to all distributed RRUs carrying the first cell when it is determined that the current time is within the carrier energy saving effective time corresponding to the first cell. The third message is used to indicate that all distributed RRUs respectively set the carrier shutdown switch corresponding to the carrier configured for the first cell to on.

[0345] Optionally, it further includes a receiving module, configured to:

[0346] Receive the fifth message sent by the target distributed RRU, where the fifth message is used to indicate that the target distributed RRU has successfully turned off the carrier of the first carrier, and the first carrier is the carrier configured by the target distributed RRU for the first cell.

[0347] Optionally, the sending module 1002 is further configured to:

[0348] In the case that the target distributed RRU is the first to send the fifth message among all distributed RRUs, send an eighth message to the base station high layer HL, where the eighth message is used to instruct HL to prohibit the terminal device from accessing or handing over to the first cell.

[0349] Optionally, the sending module 1002 is further configured to:

[0350] In the case that it is determined that the current traffic volume of the third cell with the same coverage as the first cell is greater than the traffic volume threshold, send a sixth message to all distributed RRUs, where the sixth message is used to instruct all distributed RRUs to activate the carrier configured for the first cell; and / or,

[0351] At the carrier turn-off wake-up time corresponding to the first cell, send a seventh message to the distributed RRUs carrying all, where the seventh message is used to instruct all distributed RRUs to activate the carrier configured for the first cell respectively and set the carrier turn-off switch to off.

[0352] It should be noted here that the above device provided by the embodiments of the present application can implement all the method steps implemented by the above method embodiments and can achieve the same technical effects. The same parts and beneficial effects as those in the method embodiments will not be specifically described in this embodiment.

[0353] It should be noted that the division of units in the embodiments of the present application is schematic, only a logical function division, and there may be other division methods in actual implementation. In addition, in each embodiment of the present application, each functional unit can be integrated in one processing unit, or each unit can exist physically alone, or two or more units can be integrated in one unit. The above integrated unit can be implemented in the form of hardware or in the form of a software functional unit.

[0354] When an integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a processor-readable storage medium. Based on this understanding, the technical solution of this application, in essence, or the part that contributes to the prior art, or all or part of this technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions for causing a computer device (which may be a personal computer, a server, or a network-side device, etc.) or a processor to execute all or part of the steps of the methods of various embodiments of this application. The aforementioned storage medium includes: various media such as USB flash drives, mobile hard disks, read-only memory (ROM), random access memory (RAM), magnetic disks, or optical discs that can store program codes.

[0355] To implement the above embodiments, an embodiment of this application also proposes a distributed antenna system (DAS) radio remote unit. Figure 11 FIG. is a schematic structural diagram of a DAS radio remote unit provided by an embodiment of this application.

[0356] As Figure 11 shown, the DAS radio remote unit 1100 includes: a transceiver 1101, a processor 1102, and a memory 1103;

[0357] The transceiver 1101 is configured to transmit and receive data under the control of the processor 1102.

[0358] Among them, in Figure 11 , the bus architecture may include any number of interconnected buses and bridges. Specifically, various circuits of one or more processors represented by the processor 1102 and the memory represented by the memory 1103 are linked together. The bus architecture can also link together various other circuits such as peripheral devices, voltage regulators, and power management circuits, which are well known in the art. Therefore, they will not be further described herein. The bus interface provides an interface. The transceiver 1101 can be multiple components, that is, including a transmitter and a receiver, and provides a unit for communicating with various other devices on a transmission medium, and these transmission media include wireless channels, wired channels, optical fiber cables, and other transmission media. The processor 1102 is responsible for managing the bus architecture and general processing, and the memory 1103 can store the data used by the processor 1102 when executing operations.

[0359] The processor 1102 can be a Central Processing Unit (CPU), an Application Specific Integrated Circuit (ASIC), a Field-Programmable Gate Array (FPGA), or a Complex Programmable Logic Device (CPLD). The processor can also adopt a multi-core architecture.

[0360] The processor 1102 is used to call the computer program stored in the memory and perform the following operations:

[0361] Receive a first message sent by the Baseband Processing Unit (BBU), where the first message is used to indicate the first carrier shutdown condition corresponding to the first cell;

[0362] In response to the current moment being within the carrier energy-saving effective time corresponding to the first cell, detect the first uplink signal power corresponding to the first carrier, where the first carrier is the carrier configured by the target in-building Remote Radio Unit (RRU) for the first cell;

[0363] When it is determined that the first uplink signal power meets the first carrier shutdown condition, perform carrier shutdown on the first carrier.

[0364] Optionally, the first uplink signal power includes at least one of the following:

[0365] The first power corresponding to the Physical Random Access Channel (PRACH) signal;

[0366] The second power corresponding to the Sounding Reference Signal (SRS) in the uplink.

[0367] Optionally, the processor 1102 is specifically used to perform the following operations:

[0368] Detect the first power corresponding to the PRACH signal based on the time-frequency domain information corresponding to the PRACH signal;

[0369] Detect the second power corresponding to the SRS based on the time domain information corresponding to the SRS.

[0370] Optionally, the processor 1102 is specifically used to perform the following operations:

[0371] Receive a second message sent by the BBU, where the second message is used to indicate the time-frequency domain information corresponding to the PRACH signal and the time domain information corresponding to the SRS.

[0372] Optionally, the first carrier shutdown condition includes at least one of the following:

[0373] The first power threshold corresponding to the PRACH signal;

[0374] The second power threshold corresponding to the SRS;

[0375] The first duration threshold corresponding to the PRACH signal;

[0376] The second duration threshold corresponding to the SRS.

[0377] Optionally, the processor 1102 is specifically configured to perform the following operations:

[0378] In the case where the first power is less than the first power threshold and the second power is less than the second power threshold, determine that the first uplink signal power meets the first carrier shutdown condition; or,

[0379] In the case where the duration for which the first power is less than the first power threshold is greater than the first duration threshold and the duration for which the second power is less than the second power threshold is greater than the second duration threshold, determine that the first uplink signal power meets the first carrier shutdown condition.

[0380] Optionally, the processor 1102 is specifically configured to perform the following operations:

[0381] In response to the presence of a second carrier corresponding to a second cell in the same frequency band of any radio frequency channel where the first carrier is located and the current time being within the carrier energy saving effective time corresponding to the second cell, detect the second uplink signal power corresponding to the second carrier configured for the second cell by the target distributed RRU;

[0382] In response to the first uplink signal power meeting the first carrier shutdown condition corresponding to the first cell, the second uplink signal power meeting the second carrier shutdown condition corresponding to the second cell, and the absence of other carriers except the first carrier and the second carrier in each radio frequency channel where the second carrier is located, turn off all radio frequency channels where the first carrier and the second carrier are located.

[0383] Optionally, the processor 1102 is specifically configured to perform the following operations:

[0384] In the case of receiving the third message sent by the BBU, determine that the current time is within the carrier energy saving effective time corresponding to the first cell, where the third message is used to instruct the target distributed RRU to set the carrier shutdown switch corresponding to the first carrier to on.

[0385] Optionally, the processor 1102 is specifically configured to perform the following operations:

[0386] In the case of not receiving the fourth message, detect the first uplink signal power corresponding to the first carrier, where the fourth message is used to instruct all distributed RRUs carrying the first cell to perform carrier shutdown on the first cell.

[0387] Optionally, the processor 1102 is specifically configured to perform the following operations:

[0388] Send a fifth message to the BBU, where the fifth message is used to indicate that the target distributed RRU has successfully turned off the first carrier;

[0389] In response to receiving a sixth message sent by the BBU, activate the first carrier; where the sixth message is sent by the BBU when it determines that the current traffic volume of the third cell with the same coverage is greater than the traffic volume threshold, and the sixth message is used to indicate that the target distributed RRU activates the first carrier; and / or,

[0390] In response to receiving a seventh message sent by the BBU, activate the first carrier; where the seventh message is sent by the BBU at the carrier turn-off wake-up time corresponding to the first cell, and the seventh message is used to indicate that the target distributed RRU activates the first carrier and sets the carrier turn-off switch corresponding to the first carrier to off.

[0391] Optionally, the processor 1102 is specifically configured to perform the following operations:

[0392] Return to perform the operation of detecting the first uplink signal power corresponding to the first carrier until the first carrier is turned off again or the seventh message sent by the BBU is received.

[0393] It should be noted here that the target distributed radio remote unit provided in the embodiments of the present application can implement all the method steps implemented by the above Figures 1 to 4 method embodiments, and can achieve the same technical effects. The same parts and beneficial effects as those in the method embodiments will not be specifically described in this embodiment.

[0394] To implement the above embodiments, the embodiments of the present application also propose a baseband processing unit, Figure 12 which is a schematic structural diagram of a baseband processing unit provided in the embodiments of the present application.

[0395] As Figure 12 shown, the baseband processing unit 1200 includes: a transceiver 1201, a processor 1202, and a memory 1203;

[0396] The transceiver 1201 is configured to transmit and receive data under the control of the processor 1202.

[0397] Wherein, in Figure 12Among them, the bus architecture may include any number of interconnected buses and bridges, specifically linking together various circuits of one or more processors represented by processor 1202 and memory represented by memory 1203. The bus architecture may also link together various other circuits such as peripheral devices, voltage regulators, and power management circuits, which are well known in the art and thus will not be further described herein. The bus interface provides an interface. The transceiver 1201 may be multiple components, that is, including a transmitter and a receiver, providing a unit for communicating with various other devices on a transmission medium, and these transmission media include transmission media such as wireless channels, wired channels, and optical cables. The processor 1202 is responsible for managing the bus architecture and general processing, and the memory 1203 may store data used by the processor 1202 when performing operations.

[0398] The processor 1202 may be a Central Processing Unit (CPU), an Application Specific Integrated Circuit (ASIC), a Field-Programmable Gate Array (FPGA), or a Complex Programmable Logic Device (CPLD). The processor may also adopt a multi-core architecture.

[0399] The processor 1202 is used to call a computer program stored in the memory and perform the following operations:

[0400] Determine a first carrier shutdown condition corresponding to a first cell;

[0401] When the target indoor distributed RRU accesses the first cell, send a first message to the target indoor distributed RRU, where the first message is used to indicate the first carrier shutdown condition, and the first carrier shutdown condition is used for the target indoor distributed RRU to perform carrier shutdown on the first carrier when it determines that the first uplink signal power corresponding to the first carrier satisfies the first carrier shutdown condition, and the first carrier is the carrier configured by the target indoor distributed RRU for the first cell.

[0402] Optionally, the first carrier shutdown condition includes at least one of the following:

[0403] A first power threshold corresponding to a PRACH signal;

[0404] A second power threshold corresponding to an SRS;

[0405] A first duration threshold corresponding to a PRACH signal;

[0406] A second duration threshold corresponding to an SRS.

[0407] Optionally, the processor 1202 is specifically configured to perform the following operations:

[0408] When the target distributed RRU accesses the first cell, send a second message to the target distributed RRU, where the second message is used to indicate the time-frequency domain information corresponding to the PRACH signal and the time domain information corresponding to the SRS.

[0409] Optionally, the processor 1202 is specifically configured to perform the following operations:

[0410] When it is determined that the current time is within the carrier power saving effective time corresponding to the first cell, send a third message to all distributed RRUs carrying the first cell, where the third message is used to indicate that all distributed RRUs respectively set the carrier off switch configured for the first cell to on.

[0411] Optionally, the processor 1202 is specifically configured to perform the following operations:

[0412] Receive a fifth message sent by the target distributed RRU, where the fifth message is used to indicate that the target distributed RRU successfully turns off the carrier of the first carrier, where the first carrier is the carrier configured by the target distributed RRU for the first cell.

[0413] Optionally, after receiving the fifth message sent by the target distributed RRU, the processor 1102 is specifically configured to perform the following operations:

[0414] When the target distributed RRU is the first to send the fifth message among all distributed RRUs, send an eighth message to the base station high layer HL, where the eighth message is used to indicate that HL prohibits the terminal device from accessing or handing over to the first cell.

[0415] Optionally, the processor 1202 is specifically configured to perform the following operations:

[0416] When it is determined that the current traffic volume of the third cell with the same coverage as the first cell is greater than the traffic volume threshold, send a sixth message to all distributed RRUs, where the sixth message is used to indicate that all distributed RRUs activate the carrier configured for the first cell; and / or,

[0417] At the carrier off wake-up time corresponding to the first cell, send a seventh message to all distributed RRUs carried, where the seventh message is used to indicate that all distributed RRUs respectively activate the carrier configured for the first cell and set the carrier off switch to off.

[0418] It should be noted here that the baseband processing unit provided in the embodiment of the present application can implement the above Figures 5 to 6All the method steps implemented by the method embodiments and capable of achieving the same technical effects will not be specifically described herein for the parts and beneficial effects that are the same as those in the method embodiments.

[0419] On the other hand, an embodiment of the present application also provides a processor-readable storage medium storing a computer program for causing a processor to execute the method shown in the embodiments of the present application Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 、 Figure 5 、 Figure 6 、 and the embodiments.

[0420] Among them, the above-mentioned processor-readable storage medium may be any available medium or data storage device accessible by the processor, including but not limited to magnetic memories (such as floppy disks, hard disks, magnetic tapes, magneto-optical discs (MO), etc.), optical memories (such as CDs, DVDs, BDs, HVDs, etc.), and semiconductor memories (such as ROMs, EPROMs, EEPROMs, non-volatile memories (NANDFLASH), solid state drives (SSD)).

[0421] On the other hand, an embodiment of the present application also provides a computer program product including a computer program that, when executed by a processor, implements the method shown in the embodiments of the present application Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 、 Figure 5 、 Figure 6 、 and the embodiments.

[0422] In the description of this specification, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In the description of the present application, "a plurality of" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0423] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting the present application. Those of ordinary skill in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of the present application.

Claims

1. A carrier shutdown method, characterized in that, it is executed by a target indoor distributed radio remote unit (RRU), and includes: receiving a first message sent by a baseband processing unit (BBU), where the first message is used to indicate a first carrier shutdown condition corresponding to a first cell; in response to the current moment being within the carrier energy-saving effective time corresponding to the first cell, detecting a first uplink signal power corresponding to a first carrier, where the first carrier is a carrier configured by the target indoor distributed RRU for the first cell; when it is determined that the first uplink signal power meets the first carrier shutdown condition, performing carrier shutdown on the first carrier.

2. The method according to claim 1, characterized in that, the first uplink signal power includes at least one of the following: a first power corresponding to a physical random access channel (PRACH) signal; a second power corresponding to an uplink sounding reference signal (SRS).

3. The method according to claim 2, characterized in that, the detecting of the first uplink signal power corresponding to the first carrier includes: detecting the first power corresponding to the PRACH signal based on the time-frequency domain information corresponding to the PRACH signal; detecting the second power corresponding to the SRS based on the time domain information corresponding to the SRS.

4. The method according to claim 3, characterized in that, before the detecting of the first uplink signal power corresponding to the first carrier, it further includes: receiving a second message sent by the BBU, where the second message is used to indicate the time-frequency domain information corresponding to the PRACH signal and the time domain information corresponding to the SRS.

5. The method according to claim 2, characterized in that, the first carrier shutdown condition includes at least one of the following: a first power threshold corresponding to the PRACH signal; a second power threshold corresponding to the SRS; a first duration threshold corresponding to the PRACH signal; a second duration threshold corresponding to the SRS.

6. The method according to claim 5, characterized in that, when the first uplink signal power includes the first power and the second power, the determining that the first uplink signal power meets the first carrier shutdown condition includes: when the first power is less than the first power threshold and the second power is less than the second power threshold, determining that the first uplink signal power meets the first carrier shutdown condition; or, when the duration for which the first power is less than the first power threshold is greater than the first duration threshold and the duration for which the second power is less than the second power threshold is greater than the second duration threshold, determining that the first uplink signal power meets the first carrier shutdown condition.

7. The method according to claim 1, characterized in that, it further includes: in response to a second carrier corresponding to a second cell existing in the same frequency band of any radio frequency channel where the first carrier is located and the current moment being within the carrier energy-saving effective time corresponding to the second cell, detecting a second uplink signal power corresponding to the second carrier configured by the target indoor distributed RRU for the second cell; In response to the first uplink signal power satisfying the first carrier shutdown condition corresponding to the first cell, the second uplink signal power satisfying the second carrier shutdown condition corresponding to the second cell, and there being no other carriers except the first carrier and the second carrier in each radio frequency channel where the second carrier is located, all radio frequency channels where the first carrier and the second carrier are located are shut down.

8. The method according to claim 1, wherein, the determining that the current moment is within the carrier energy-saving effective time corresponding to the first cell includes: when receiving the third message sent by the BBU, determining that the current moment is within the carrier energy-saving effective time corresponding to the first cell, wherein the third message is used to instruct the target distributed RRU to set the carrier shutdown switch corresponding to the first carrier to on.

9. The method according to claim 8, wherein, the detecting the first uplink signal power corresponding to the first carrier includes: when not receiving the fourth message, detecting the first uplink signal power corresponding to the first carrier, wherein the fourth message is used to instruct all distributed RRUs carrying the first cell to perform carrier shutdown on the first cell.

10. The method according to any one of claims 1-9, wherein, after performing carrier shutdown on the first carrier, further includes: sending a fifth message to the BBU, wherein the fifth message is used to instruct the target distributed RRU to successfully shut down the first carrier; in response to receiving the sixth message sent by the BBU, activating the first carrier; wherein the sixth message is sent by the BBU when determining that the current traffic volume of the third cell with the same coverage is greater than the traffic volume threshold, and the sixth message is used to instruct the target distributed RRU to activate the first carrier; and / or, in response to receiving the seventh message sent by the BBU, activating the first carrier; wherein the seventh message is sent by the BBU at the carrier shutdown wake-up time corresponding to the first cell, and the seventh message is used to instruct the target distributed RRU to activate the first carrier and set the carrier shutdown switch corresponding to the first carrier to off.

11. The method according to claim 10, wherein, after receiving the sixth message sent by the BBU and activating the first carrier, further includes: returning to perform the operation of detecting the first uplink signal power corresponding to the first carrier until carrier shutdown is performed on the first carrier again, or receiving the seventh message sent by the BBU.

12. A carrier shutdown method, wherein, being executed by a baseband processing unit BBU, includes: determining the first carrier shutdown condition corresponding to the first cell; When the target indoor distributed RRU accesses the first cell, send a first message to the target indoor distributed RRU, where the first message is used to indicate a first carrier shutdown condition, and the first carrier shutdown condition is used for the target indoor distributed RRU to perform carrier shutdown on the first carrier when it determines that the first uplink signal power corresponding to the first carrier satisfies the first carrier shutdown condition, and the first carrier is a carrier configured by the target indoor distributed RRU for the first cell.

13. The method according to claim 12, wherein, the first carrier shutdown condition includes at least one of the following: a first power threshold corresponding to a PRACH signal; a second power threshold corresponding to an SRS; a first duration threshold corresponding to the PRACH signal; a second duration threshold corresponding to the SRS.

14. The method according to claim 12, wherein, further includes: When the target indoor distributed RRU accesses the first cell, send a second message to the target indoor distributed RRU, where the second message is used to indicate the time-frequency domain information corresponding to the PRACH signal and the time domain information corresponding to the SRS.

15. The method according to claim 12, wherein, after sending the first message to the target indoor distributed RRU, further includes: When it is determined that the current time is within the carrier energy-saving effective time corresponding to the first cell, send a third message to all indoor distributed RRUs carrying the first cell, where the third message is used to indicate that all indoor distributed RRUs respectively set the carrier shutdown switch corresponding to the carrier configured for the first cell to on.

16. The method according to claim 15, wherein, further includes: Receive a fifth message sent by the target indoor distributed RRU, where the fifth message is used to indicate that the target indoor distributed RRU has successfully shut down the first carrier, and the first carrier is a carrier configured by the target indoor distributed RRU for the first cell.

17. The method according to claim 16, wherein, after receiving the fifth message sent by the target indoor distributed RRU, further includes: When the target indoor distributed RRU is the first to send the fifth message among all indoor distributed RRUs, send an eighth message to the base station high layer HL, where the eighth message is used to indicate that the HL prohibits the terminal device from accessing or handing over to the first cell.

18. The method according to claim 16, wherein, further includes: When it is determined that the current traffic volume of a third cell with the same coverage as the first cell is greater than a traffic volume threshold, send a sixth message to all indoor distributed RRUs, where the sixth message is used to indicate that all indoor distributed RRUs activate the carrier configured for the first cell; and / or, At the carrier shutdown wake-up time corresponding to the first cell, send a seventh message to all indoor distributed RRUs carried, where the seventh message is used to indicate that all indoor distributed RRUs respectively activate the carrier configured for the first cell and set the carrier shutdown switch to off.

19. A carrier shutdown device, characterized in that, it is configured on the target distributed RRU side and includes: a receiving module, configured to receive a first message sent by a baseband processing unit BBU, where the first message is used to indicate a first carrier shutdown condition corresponding to a first cell; a detecting module, configured to detect a first uplink signal power corresponding to a first carrier in response to the current moment being within a carrier energy saving effective time corresponding to the first cell, where the first carrier is a carrier configured by the target distributed RRU for the first cell; a processing module, configured to perform carrier shutdown on the first carrier when it is determined that the first uplink signal power meets the first carrier shutdown condition.

20. A carrier shutdown device, characterized in that, it is executed by a baseband processing unit BBU and includes: a determining module, configured to determine a first carrier shutdown condition corresponding to a first cell; a sending module, configured to send a first message to the target distributed RRU when the target distributed RRU accesses the first cell, where the first message is used to indicate the first carrier shutdown condition, and the first carrier shutdown condition is used for the target distributed RRU to perform carrier shutdown on the first carrier when it is determined that a first uplink signal power corresponding to the first carrier meets the first carrier shutdown condition, and the first carrier is a carrier configured by the target distributed RRU for the first cell.

21. A target distributed RRU, characterized in that, the target distributed RRU includes a memory, a transceiver, and a processor; the memory is configured to store a computer program; the transceiver is configured to transmit and receive data under the control of the processor; the processor is configured to read the computer program in the memory and execute the method according to any one of claims 1 - 11.

22. A baseband processing unit BBU, characterized in that, the BBU includes a memory, a transceiver, and a processor; the memory is configured to store a computer program; the transceiver is configured to transmit and receive data under the control of the processor; the processor is configured to read the computer program in the memory and execute the method according to any one of claims 12 - 18.

23. A processor-readable storage medium, characterized in that, the processor-readable storage medium stores a computer program, and the computer program is used to cause the processor to execute the carrier shutdown method according to any one of claims 1 to 11, or cause the processor to execute the carrier shutdown method according to any one of claims 12 to 18.

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