CN113872629B

CN113872629B - Information transmission method, device and storage medium

Info

Publication number: CN113872629B
Application number: CN202010537421.3A
Authority: CN
Inventors: 彭劲东
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2020-06-12
Filing date: 2020-06-12
Publication date: 2023-04-18
Anticipated expiration: 2040-06-12
Also published as: CN113872629A; WO2021249287A1

Abstract

The application provides an information transmission method, an information transmission device and a storage medium, wherein the method comprises the following steps: the baseband unit generates first information, where the first information is used to instruct the first remote radio unit to stop executing the first operation when an energy value of a first uplink signal corresponding to the first remote radio unit is smaller than a first preset value, where the first operation includes uplink transmission and/or downlink transmission, and the first remote radio unit is any one of multiple remote radio units of the network device. The first radio remote unit receives the first information, and stops executing the first operation according to the first information under the condition that the energy value of a first uplink signal corresponding to the first radio remote unit is smaller than a first preset value, so that the first radio remote unit stops executing the first operation when the first radio remote unit has no user or no effective user, the number of radio remote units participating in radio frequency combining is reduced, uplink background noise is reduced, and the transmission performance of the system is improved.

Description

Information transmission method, device and storage medium

Technical Field

The present application relates to the field of communications technologies, and in particular, to an information transmission method, an information transmission apparatus, and a storage medium.

Background

The Lampsite architecture is a general name of an indoor system, and comprises: the Remote Radio Unit comprises a baseband Unit (Base Band Unit, BBU), a Remote Radio Unit concentrator (Remote Radio Unit HUB, rHUB) and a plurality of Remote Radio units (Pico Remote Radio Unit, pRRU), wherein the rHUB is connected with the BBU through optical fibers, and the pRRU is connected with the rHUB through network cables. Specifically, the pRRU can support multiple bands and multiple modes, and can simultaneously support various communication systems for implementing conversion of an intermediate frequency signal into a radio frequency signal so that it can transmit within a specified frequency band; the rHUB is used for cascading or combining the data transmitted by the pRRU and then transmitting the data to the BBU; the BBU is mainly used to implement a physical layer, a Media Access Control (MAC) layer, and an L3 layer.

In the current Lampsite architecture, a plurality of rHUBs are connected under one BBU, and a plurality of pRRUs are connected under one rHUB. During uplink transmission, after receiving data from terminal equipment in a coverage range, each pRRU sends the data to a corresponding rHUB, and after the rHUB performs radio frequency combining, the data are sent to a corresponding BBU for demodulation.

When the radio frequency combining is carried out, the more the number of pRRUs participating in the radio frequency combining is, the larger the ascending bottom noise is, and the transmission performance of the system is influenced. In order to reduce the uplink background noise, the number of pRRUs connected under one rHUB is reduced. However, reducing the number of prrus connected under one rHUB increases the number of rhubs, which in turn increases the deployment cost of the indoor system.

Disclosure of Invention

The embodiment of the application provides an information transmission method, an information transmission device and a storage medium, which are used for improving the transmission performance of a system on the basis of not increasing the deployment cost of an indoor system.

In a first aspect, an embodiment of the present application provides an information transmission method, where the method includes: the first remote radio unit receives first information from a baseband unit, wherein the first information is used for indicating that the first remote radio unit stops executing a first operation when an energy value of a first uplink signal corresponding to the first remote radio unit is smaller than a first preset value, and the first remote radio unit is any one of a plurality of remote radio units of the network equipment; according to the first information, under the condition that the energy value of a first uplink signal corresponding to the first remote radio unit is smaller than a first preset value, stopping executing a first operation, wherein the first operation comprises uplink transmission and/or downlink transmission.

According to the information transmission method, the first remote radio unit stops executing the first operation under the condition that the energy value of the first uplink signal corresponding to the first remote radio unit is smaller than the first preset value according to the first information sent by the baseband processing unit, and therefore when the first remote radio unit has no user or no effective user, the first remote radio unit stops uplink transmission and/or downlink transmission, the number of remote radio units participating in radio frequency combining is reduced, uplink bottom noise is reduced, and uplink transmission efficiency of a system is improved.

The mode that the baseband unit can instruct the first remote radio unit to stop executing the first operation through the first information includes an indirect mode and a direct mode:

the indirect mode is as follows: the baseband unit indicates the first remote radio unit to detect an energy value of a first uplink signal on a first frequency domain resource and a first preset value at a first time by the first remote radio unit through the first information; in this way, the first remote radio unit detects the energy value of the first uplink signal on the first frequency domain resource at the first time; and stopping executing the first operation when the energy value of the first uplink signal is smaller than a first preset value.

In this implementation manner, the first remote radio unit detects the energy value of the first uplink signal on the first frequency domain resource at the first time, and when the energy value of the first uplink signal is smaller than the first preset value, the first remote radio unit stops executing the first operation, so that the first remote radio unit automatically detects whether to execute the first operation without the need of indicating by the baseband unit, thereby simplifying the information interaction process and improving the information transmission efficiency of the system.

The direct mode is as follows: the baseband processing unit indicates the first remote radio unit to stop executing the first operation to the first remote radio unit through first information, where the first information is sent when the baseband unit detects that an energy value of a first uplink signal on the first frequency domain resource is smaller than a first preset value at a first time; in this way, the first remote radio unit stops executing the first operation according to the indication of the first information.

In this implementation manner, the baseband unit completes the energy value detection of the first uplink signal, and since the data processing capability of the baseband unit is strong, the efficiency of detecting the energy value of the first uplink signal is further improved, and the first remote radio unit does not need to perform energy value detection, so that the energy consumption of the first remote radio unit is reduced.

Optionally, the first uplink signal includes a preset physical uplink channel and/or a preset reference signal.

Optionally, the first frequency domain resource includes a frequency domain resource for transmitting a first uplink signal of each terminal device within a coverage of the first remote radio unit.

In some embodiments, the first time includes a time when the first remote radio unit receives the first uplink signal of each terminal device in the coverage area, and other remote radio units do not receive the first uplink signal of each terminal device in the coverage area, where the other remote radio units are remote radio units other than the first remote radio unit in a plurality of remote radio units connected under one concentrator unit.

In some embodiments, the first preset value is related to a signal interference value of a neighboring remote radio unit of the first remote radio unit to the first remote radio unit at the current time.

In some embodiments, the method of embodiments of the present application further comprises: the first remote radio unit reduces downlink transmission power of the first remote radio unit under the condition that the first remote radio unit stops executing the first operation, so as to save energy consumption.

The method of the embodiment of the present application further includes a process of the first remote radio unit stopping executing the first operation and switching to executing the first operation. The method for switching the first remote radio unit from stopping executing the first operation to executing the first operation includes two ways: in the first mode, the first remote radio unit detects the energy value of the second uplink signal by itself, and executes the first operation when the energy value of the second uplink signal is greater than the second preset value. In the second mode, the baseband unit instructs the first remote radio unit to perform the first operation under the preset condition.

In a first mode, the first radio remote unit receives second information from the baseband unit, where the second information is used to indicate a second preset value, and after the first radio remote unit stops executing the first operation, detects a second time of an energy value of a second uplink signal on the second frequency domain resource; under the condition that the first operation is stopped, detecting an energy value of a second uplink signal on a second frequency domain resource at a second time; and executing a first operation when the energy value of the second uplink signal is greater than a second preset value.

In the first mode, the first remote radio unit wakes up at the second time, detects the energy value of the second uplink signal on the second frequency domain resource, and when the energy value of the second uplink signal is greater than the second preset value, the first remote radio unit starts to execute the first operation to perform uplink and downlink transmission, thereby ensuring the reliability of information transmission.

Optionally, the second uplink signal includes a preset physical uplink channel and/or a preset reference signal.

Optionally, the second frequency domain resource includes a frequency domain resource for transmitting a second uplink signal of each terminal device within the coverage of the first remote radio unit.

Optionally, the time interval of two adjacent second times is greater than the time interval of two adjacent first times.

In some embodiments, the second preset value is related to a historical energy value of a second uplink signal received by the first remote radio unit from the first terminal device, where the first terminal device is any terminal device located in a coverage area of an adjacent remote radio unit of the first remote radio unit.

Optionally, the second preset value is greater than or equal to the historical energy value.

In the second mode, the first remote radio unit receives third information from the baseband unit, wherein the third information is used for indicating the first remote radio unit to execute the first operation; and executing the first operation according to the third information.

In the second mode, the baseband unit determines, according to the topology relationship of the radio remote units, at least one second radio remote unit adjacent to the first radio remote unit, and for each second radio remote unit, when detecting that the energy value of the first uplink signal of each terminal device in the coverage area of the second radio remote unit is greater than the first preset value, the baseband unit determines that at least one terminal device under the coverage of the second radio remote unit is in a connected state. At this time, the baseband unit sends the third information to the first remote radio unit, so that the first remote radio unit is switched from a state of stopping executing the first operation to a state of executing the first operation in advance, and thus when the connected terminal device under the coverage of the second remote radio unit enters the coverage range of the first remote radio unit, the first remote radio unit can perform uplink and downlink transmission in time, and further the information transmission efficiency is improved.

In a second aspect, an embodiment of the present application provides an information transmission method, including: the method comprises the steps that a baseband unit generates first information, the first information is used for indicating a first remote radio unit to stop executing a first operation when the energy value of a first uplink signal corresponding to the first remote radio unit is smaller than a first preset value, the first remote radio unit is any one of a plurality of remote radio units of network equipment, and the first operation comprises uplink transmission and/or downlink transmission; and sending the first information to the first remote radio unit.

In some embodiments, the first information is specifically used to instruct the first remote radio unit to detect an energy value of the first uplink signal on the first frequency-domain resource at the first time, and a first preset value,

the first preset value is used for stopping the first radio remote unit from executing the first operation when the energy value of the first uplink signal corresponding to the first radio remote unit is smaller than the first preset value.

In some embodiments, the baseband unit generates the first information comprising: detecting an energy value of a first uplink signal on a first frequency domain resource at a first time; and when the energy value of the first uplink signal is smaller than a first preset value, generating first information, wherein the first information is specifically used for instructing the first remote radio unit to stop executing the first operation.

In some embodiments, the first time includes a time when the first remote radio unit receives the first uplink signal of each terminal device in the coverage area, and the other remote radio units do not receive the first uplink signal of each terminal device in the coverage area, where the other remote radio units are remote radio units other than the first remote radio unit in the plurality of remote radio units connected under one aggregation unit.

Optionally, the first preset value is related to a signal interference value of an adjacent radio remote unit of the first radio remote unit to the first radio remote unit at the current time.

In some embodiments, the method of embodiments of the present application further comprises: the baseband unit sends second information to the first remote radio unit, wherein the second information is used for indicating a second preset value, and after the first remote radio unit stops executing the first operation, second time for detecting an energy value of a second uplink signal on a second frequency domain resource is detected; and the second preset value is used for executing the first operation when the energy value of the second uplink signal detected by the first remote radio unit at the second time is greater than the second preset value.

In some embodiments, the method of embodiments of the present application further comprises: the base band unit determines at least one second remote radio unit adjacent to the first remote radio unit based on the topological relation of the remote radio units; for each second remote radio unit, when detecting that the energy value of the first uplink signal of each terminal device in the coverage area of the second remote radio unit is greater than a first preset value, determining that at least one terminal device under the coverage of the second remote radio unit is in a connected state; and sending third information to the first remote radio unit, wherein the third information is used for indicating the first remote radio unit to execute the first operation.

The beneficial effects of the information transmission method provided by the second aspect and each possible implementation manner of the second aspect may refer to the beneficial effects brought by each possible implementation manner of the first aspect and the first aspect, which are not described herein again.

In a third aspect, an embodiment of the present application provides an information transmission apparatus, including:

a receiving unit, configured to receive first information from a baseband unit, where the first information is used to instruct a first remote radio unit to stop executing a first operation when an energy value of a first uplink signal corresponding to the first remote radio unit is smaller than a first preset value, and the first remote radio unit is any one of multiple remote radio units of a network device;

and the processing unit is used for stopping executing the first operation under the condition that the energy value of the first uplink signal corresponding to the first radio remote unit is smaller than a first preset value according to the first information, wherein the first operation comprises uplink transmission and/or downlink transmission.

In some embodiments, the first information is specifically used to instruct the first remote radio unit to detect an energy value of the first uplink signal on the first frequency-domain resource at a first time, and a first preset value;

the processing unit is specifically configured to detect an energy value of a first uplink signal on a first frequency domain resource at a first time; and stopping executing the first operation when the energy value of the first uplink signal is smaller than a first preset value.

In some embodiments, the processing unit is specifically configured to stop performing the first operation according to an indication of first information, where the first information is specifically configured to instruct the first remote radio unit to stop performing the first operation, and the first information is sent by the baseband unit when the baseband unit detects that an energy value of the first uplink signal on the first frequency domain resource is smaller than a first preset value at a first time.

In some embodiments, the first uplink signal includes a preset physical uplink channel and/or a preset reference signal.

In some embodiments, the first frequency domain resource includes a frequency domain resource for transmitting a first uplink signal of each terminal device within the coverage of the first remote radio unit.

In some embodiments, the first time includes a time when the first remote radio unit receives the first uplink signal of each terminal device in the coverage area, and other remote radio units do not receive the first uplink signal of each terminal device in the coverage area, where the other remote radio units are remote radio units other than the first remote radio unit in the plurality of remote radio units connected under the aggregation unit.

In some embodiments, the first preset value is related to a signal interference value of a neighboring remote unit of the first remote unit to the first remote unit at the current time.

In some embodiments, the processing unit is further configured to reduce downlink transmission power of the first remote radio unit when the first remote radio unit stops performing the first operation.

In some embodiments, the receiving unit is configured to receive second information from the baseband unit, where the second information is used to indicate a second preset value, and a second time when the first remote radio unit stops performing the first operation is detected as an energy value of the second uplink signal on the second frequency domain resource; under the condition that the first operation is stopped, detecting an energy value of a second uplink signal on a second frequency domain resource at a second time; and when the energy value of the second uplink signal is greater than a second preset value, executing a first operation.

In some embodiments, the second uplink signal includes a preset physical uplink channel and/or a preset reference signal.

In some embodiments, the second frequency domain resource includes a frequency domain resource for transmitting a second uplink signal of each terminal device within the coverage of the first remote radio unit.

In some embodiments, the time interval of two adjacent second times is greater than the time interval of two adjacent first times.

In some embodiments, the second preset value is greater than or equal to the historical energy value.

In some embodiments, the receiving unit is further configured to receive third information from the baseband unit, where the third information is used to instruct the first remote radio unit to perform the first operation;

and the processing unit is further used for executing the first operation according to the third information.

The beneficial effects of the information transmission apparatus provided in the third aspect and each possible implementation manner of the third aspect may refer to the beneficial effects brought by each possible implementation manner of the first aspect and the first aspect, which are not described herein again.

In a fourth aspect, an embodiment of the present application provides an information transmission apparatus, including:

a processing unit, configured to generate first information, where the first information is used to instruct a first remote radio unit to stop executing a first operation when an energy value of a first uplink signal corresponding to the first remote radio unit is smaller than a first preset value, the first remote radio unit is any one of multiple remote radio units of a network device, and the first operation includes uplink transmission and/or downlink transmission;

and the sending unit is used for sending the first information to the first remote radio unit.

In some embodiments, the first information is specifically used to instruct the first remote radio unit to detect the energy value of the first uplink signal on the first frequency domain resource at the first time, and a first preset value,

In some embodiments, the processing unit is specifically configured to detect, at a first time, an energy value of a first uplink signal on a first frequency-domain resource; and when the energy value of the first uplink signal is smaller than a first preset value, generating first information, wherein the first information is specifically used for instructing the first remote radio unit to stop executing the first operation.

In some embodiments, the sending unit is further configured to send second information to the first remote radio unit, where the second information is used to indicate a second preset value, and a second time for detecting an energy value of the second uplink signal on the second frequency domain resource after the first remote radio unit stops performing the first operation;

the second preset value is used for executing the first operation when the energy value of the second uplink signal detected by the first remote radio unit at the second time is greater than the second preset value.

In some embodiments, the second frequency domain resource includes a frequency domain resource for transmitting a second uplink signal of each terminal device in the coverage of the first remote radio unit.

In some embodiments, the processing unit is further configured to determine, based on a topological relation of the remote radio units, at least one second remote radio unit adjacent to the first remote radio unit; for each second remote radio unit, when detecting that the energy value of the first uplink signal of each terminal device in the coverage area of the second remote radio unit is greater than a first preset value, determining that at least one terminal device under the coverage of the second remote radio unit is in a connected state;

and the sending unit is further configured to send third information to the first remote radio unit, where the third information is used to instruct the first remote radio unit to execute the first operation.

The beneficial effects of the information transmission apparatus provided in the fourth aspect and each possible implementation manner of the fourth aspect may refer to the beneficial effects brought by each possible implementation manner of the second aspect and the second aspect, and details are not repeated herein.

In a fifth aspect, an embodiment of the present application provides an information transmission apparatus, where the information transmission apparatus may be a first remote radio unit, and may also be a component (for example, an integrated circuit, a chip, or the like) of the first remote radio unit, and the information transmission apparatus may implement functions corresponding to each step in the method according to the first aspect, where the functions may be implemented by hardware, and may also be implemented by hardware to execute corresponding software. The hardware or software includes one or more units or modules corresponding to the above functions.

In one possible design, the apparatus includes a processor configured to support the apparatus to perform the corresponding functions in the method according to the first aspect. The apparatus may also include a memory for coupling with the processor that retains program instructions and data necessary for the apparatus. Optionally, the apparatus further comprises a transceiver for supporting communication between the apparatus and other network elements. Wherein the transceiver may be a separate receiver, a separate transmitter, or a transceiver integrating transceiving functions.

In a sixth aspect, an embodiment of the present application provides an information transmission apparatus, where the information transmission apparatus may be a baseband unit, or may be a component (e.g., an integrated circuit, a chip, or the like) of the baseband unit, and the information transmission apparatus may implement functions corresponding to each step in the method according to the second aspect, where the functions may be implemented by hardware, or may be implemented by hardware to execute corresponding software. The hardware or software includes one or more units or modules corresponding to the above functions.

In one possible design, the apparatus includes a processor configured to support the apparatus to perform the corresponding functions in the method according to the second aspect. The apparatus may also include a memory, coupled to the processor, that retains program instructions and data necessary for the apparatus. Optionally, the apparatus further comprises a transceiver for supporting communication between the apparatus and other network elements. Wherein the transceiver may be a separate receiver, a separate transmitter, or a transceiver integrating transceiving functions.

In a seventh aspect, an embodiment of the present application provides a communication device, where the communication device includes: a processor and a transceiver for implementing the information transmission method according to the first aspect or the second aspect.

In an eighth aspect, the present invention provides an information transmission apparatus, which exists in the form of a chip product, and the apparatus includes a processor and a memory, where the memory is configured to be coupled to the processor and store necessary program instructions and data of the apparatus, and the processor is configured to execute the program instructions stored in the memory, so that the apparatus performs the functions of the first remote radio unit or the baseband processing unit in the foregoing method.

In a ninth aspect, the present application provides a computer storage medium including computer instructions, which when executed by a computer, cause the computer to implement the information transmission method according to any one of the first aspect or the second aspect.

In a tenth aspect, embodiments of the present application provide a computer program product, which includes a computer program stored in a readable storage medium, from which at least one processor of a communication device can read the computer program, and the at least one processor executes the computer program to make the communication device implement the information transmission method according to any one of the first aspect or the second aspect.

In an eleventh aspect, an embodiment of the present application provides a network device, where the system includes the first remote radio unit and a baseband unit.

In the information transmission method, the apparatus, and the storage medium provided in the embodiments of the present application, the baseband unit generates first information, where the first information is used to instruct the first remote radio unit to stop executing the first operation when an energy value of a first uplink signal corresponding to the first remote radio unit is smaller than a first preset value, where the first remote radio unit is any one of multiple remote radio units of the network device. The first radio remote unit receives the first information, and stops executing the first operation according to the first information under the condition that the energy value of a first uplink signal corresponding to the first radio remote unit is smaller than a first preset value, so that the first radio remote unit stops uplink transmission and/or downlink transmission when the first radio remote unit has no user or no effective user, the number of radio remote units participating in radio frequency combining is reduced, uplink bottom noise is reduced, and the uplink transmission efficiency of the system is improved.

Drawings

Fig. 1 is a schematic diagram of a communication system architecture according to an embodiment of the present application;

fig. 2 is a schematic flowchart of an information transmission method according to an embodiment of the present application;

fig. 3 is another schematic flow chart of an information transmission method according to an embodiment of the present application;

fig. 4 is another schematic flow chart of an information transmission method according to an embodiment of the present application;

fig. 5 is another schematic flow chart of an information transmission method according to an embodiment of the present application;

fig. 6 is a schematic flowchart of another information transmission method according to an embodiment of the present application;

fig. 7 is a schematic structural diagram of an information transmission apparatus according to an embodiment of the present application;

fig. 8 is a schematic structural diagram of an information transmission apparatus according to an embodiment of the present application;

fig. 9 is a schematic structural diagram of a communication device according to an embodiment of the present application;

fig. 10 is a schematic structural diagram of a communication device according to an embodiment of the present application;

fig. 11 is a schematic structural diagram of an information transmission apparatus according to an embodiment of the present application;

fig. 12 is a schematic structural diagram of a network device according to an embodiment of the present application.

Detailed Description

The technical solutions in the embodiments of the present application will be described below with reference to the drawings in the embodiments of the present application.

It should be understood that in the embodiment of the present application, "B corresponding to a" means that B is associated with a. In one implementation, B may be determined from a. It should also be understood that determining B from a does not mean determining B from a alone, but may be determined from a and/or other information. The term "plurality" herein means two or more. The term "and/or" herein is merely an association describing an associated object, meaning that three relationships may exist, e.g., a and/or B, may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" herein generally indicates that the former and latter associated objects are in an "or" relationship; in the formula, the character "/" indicates that the preceding and following related objects are in a relationship of "division".

The terms "first," "second," and the like in the description and claims of the present invention and in the above-described drawings distinguish the same or similar items having substantially the same function or effect. Those skilled in the art will appreciate that the terms "first," "second," etc. do not denote any order or quantity, nor do the terms "first," "second," etc. denote any order or importance.

Fig. 1 is a schematic diagram of a communication system architecture according to an embodiment of the present application. As shown in fig. 1, the communication system architecture comprises: the device comprises a baseband unit, a convergence unit and a plurality of radio remote units.

The baseband unit is used for realizing the functions of a physical layer, an MAC layer and an L3 layer.

A radio remote unit for converting the intermediate frequency signal into a radio frequency signal so as to transmit the radio frequency signal in a designated frequency band

And the convergence unit is used for transmitting the data transmitted by the radio remote unit to the baseband unit after being cascaded or combined.

As shown in fig. 1, one baseband unit is connected to a plurality of convergence units, and one convergence unit is connected to a plurality of remote radio units.

Optionally, the communication system architecture may be a Lampsite architecture, and optionally, the remote radio unit may be a micro remote radio unit, such as a pRRU. The aggregation unit may be a radio remote unit aggregator, such as an rHUB, and the baseband unit is a BBU.

If the radio remote units connected to the same convergence unit are configured into a cell, the radio remote unit is called a radio frequency combiner.

The descending direction is as follows: the base band unit sends the downlink data to the aggregation unit, the aggregation unit forwards the downlink data to each remote radio unit, each remote radio unit sends the received downlink data to each terminal device in a coverage area, and the content issued by each remote radio unit is the same.

An uplink direction: each remote radio unit receives data sent by the terminal equipment within the coverage area and sends the data to the corresponding convergence unit, and the convergence unit performs radio frequency combination and then sends the data to the baseband unit for demodulation.

A logic cell: the terminal equipment has a unique global identity (CGI), and the terminal equipment can identify a cell on an air interface.

Physical cell: the baseband processing resources, for example, one physical cell may correspond to the modulation and demodulation capability of the LTE air interface 20M bandwidth.

In a wireless network, a plurality of physical cells can be configured under one logical cell, and a plurality of remote radio units can be connected under each physical cell.

It should be understood that the technical solutions of the embodiments of the present invention can be applied to various communication systems, for example: a Global System for Mobile communications (GSM) System, a Code Division Multiple Access (CDMA) System, a Wideband Code Division Multiple Access (WCDMA) System, a General Packet Radio Service (GPRS), a Long Term Evolution (Long Term Evolution, LTE) System, an LTE Frequency Division Duplex (FDD) System, an LTE Time Division Duplex (TDD), a Universal Mobile Telecommunications System (UMTS), a Worldwide Interoperability for Microwave Access (WiMAX) communication System, or a future 5G System.

It should also be understood that terminal Equipment may refer to an access terminal, user Equipment (UE), subscriber unit, subscriber station, mobile station, remote terminal, mobile device, user terminal, wireless communication device, user agent, or User Equipment. An access terminal may be a cellular telephone, a cordless telephone, a Session Initiation Protocol (SIP) phone, a Wireless Local Loop (WLL) station, a Personal Digital Assistant (PDA), a handheld device with Wireless communication capabilities, a computing device or other processing device connected to a Wireless modem, a vehicle mounted device, a wearable device, a terminal device in a future 5G Network or a terminal device in a future evolved Public Land Mobile Network (PLMN), etc.

It should also be understood that the network device may be a device for communicating with the terminal device, the network device may be a Base Transceiver Station (BTS) in a GSM system or a Code Division Multiple Access (CDMA) system, may also be a Base station (NodeB, NB) in a WCDMA system, may also be an evolved Node B (eNB or eNodeB) in an LTE system, or may be a wireless controller in a Cloud Radio Access Network (CRAN), or the network device may be a relay station, an Access point, a vehicle-mounted device, a wearable device, a network-side device in a future 5G network, or a network device in a future evolved PLMN network, etc.

In the embodiment of the present application, the network device and the terminal device may communicate through a licensed spectrum (licensed spectrum), may also communicate through an unlicensed spectrum (unlicensed spectrum), and may also communicate through both the licensed spectrum and the unlicensed spectrum. The network device and the terminal device may communicate with each other through a frequency spectrum of 6GHz or less, through a frequency spectrum of 6GHz or more, or through both a frequency spectrum of 6GHz or less and a frequency spectrum of 6GHz or more. The embodiment of the application does not limit the spectrum resources used between the network device and the terminal device.

The embodiment of the application can be suitable for downlink data transmission and can also be suitable for uplink data transmission. For downlink data transmission, the sending device is a network device, and the corresponding receiving device is a terminal device. For uplink data transmission, the transmitting device is a terminal device, and the corresponding receiving device is a network device.

The resources described in the embodiments of the present application are transmission resources, including time domain resources and frequency domain resources, and may be used for carrying data or signaling in an uplink communication process or a downlink communication process.

The "transmission" appearing in the embodiments of the present application refers to a bidirectional transmission, including actions of transmission and/or reception, unless otherwise specified. Specifically, "transmission" in the embodiment of the present application includes transmission of data, reception of data, or both transmission of data and reception of data. Alternatively, the data transmission herein includes uplink and/or downlink data transmission. The data may include channels and/or signals, uplink data transmission, i.e., uplink channels and/or uplink signal transmission, and downlink data transmission, i.e., downlink data channels and/or downlink signal transmission.

It should also be understood that the embodiment of the present invention is mainly applied to the Lampsite architecture, but the embodiment of the present application does not limit this.

When the radio frequency combining is carried out, the more the number of the radio frequency remote units participating in the radio frequency combining is, the larger the uplink background noise is, and the transmission performance of the system is influenced. In order to reduce uplink background noise, currently, the coverage area of a physical cell is reduced, specifically, the number of radio remote units connected under one aggregation unit is reduced. However, reducing the coverage of the physical cell increases the number of aggregation units, which in turn increases the deployment cost of the indoor system.

In order to solve the foregoing technical problems, an embodiment of the present application provides an information transmission method, where whether a user exists under each radio remote unit is determined, and when there is no user or no valid user under each radio remote unit, the radio remote unit does not perform uplink transmission, so that the number of radio remote units participating in radio combining is reduced, and uplink background noise is reduced and performance of an indoor system is improved while deployment cost of the indoor system is not increased.

The technical solutions of the embodiments of the present application are described in detail below with some embodiments. The following several embodiments may be combined with each other and may not be described in detail for the same or similar concepts or processes in some embodiments.

Fig. 2 is a schematic flow chart of an information transmission method provided in the embodiment of the present application, and it should be noted that in the embodiment of the present application, one remote radio unit (i.e., a first remote radio unit) in a network device is taken as an example for description, and other remote radio units may refer to the remote radio unit. As shown in fig. 2, the information transmission method according to the embodiment of the present application includes:

s101, the baseband unit generates first information.

The first information is used for indicating the first remote radio unit to stop executing the first operation when the energy value of the first uplink signal corresponding to the first remote radio unit is smaller than a first preset value.

The first remote radio unit is any one of a plurality of remote radio units of the network device. It can be understood that, for convenience of explanation, the information transmission method provided in the embodiment of the present application is described by taking, as an example, one remote radio unit, that is, a first remote radio unit, in a plurality of remote radio units of a network device, and information transmission processes of other remote radio units are substantially the same as that of the first remote radio unit, and the information transmission process of the first remote radio unit is referred to.

The first operation includes uplink transmission and/or downlink transmission.

The baseband unit comprises 3 layers, wherein layer 1 is a physical layer and is used for providing a wireless physical channel for transmitting high-layer services. Layer 2 is a data link layer and includes four sublayers, namely MAC, RLC, BMC and PDCP. Layer 3 is the network layer, i.e., the RRC layer.

The first information may be generated by a network layer of the baseband unit.

In some examples, the first uplink signal may be a preset reference signal, and for example, the preset reference signal includes: a channel Sounding Reference Signal (SRS), a Demodulation Reference Signal (DMRS), a Demodulated Reference Signal (DRS), and the like.

In some examples, the first Uplink signal may be a preset Physical Uplink Channel, for example, a Physical Uplink Shared Channel (PUSCH) for carrying Uplink data, a Physical Uplink Control Channel (PUCCH) for transmitting Uplink Control information, or a Physical Random Access Channel (PRACH) for transmitting an initial Access preamble (preamble) sequence.

In some embodiments, the first uplink signal may be a preset reference signal and a preset physical uplink channel, where the preset reference signal may be the uplink reference information such as the SRS, the DMRS, and the DRS, and the preset physical uplink channel may be a physical uplink channel such as a PUSCH, a PUCCH, and a PRACH.

The implementation of the present application does not limit the type of the first uplink signal, and is specifically determined according to actual needs.

The first uplink signal corresponding to the first remote radio unit may be understood as an uplink signal sent by each terminal device located within the coverage area of the first remote radio unit.

In this embodiment of the application, when the energy value of the first uplink signal corresponding to the first remote radio unit is smaller than the first preset value, it is indicated that there is no terminal device in a connected state under the first remote radio unit, that is, there is no user under the first remote radio unit. Or the first remote radio unit has a terminal device in a connected state, but the terminal device in the connected state has no valid uplink information to be uploaded, that is, there is no valid user under the first remote radio unit. In this case, in order to reduce the number of the remote radio units participating in the radio frequency combining and reduce the uplink background noise, the first remote radio unit stops executing the first operation, that is, the first remote radio unit does not perform uplink transmission and/or downlink transmission. Optionally, in this case, the first remote radio unit may be dormant to save power consumption.

It should be noted that the manner in which the first information instructs the first remote radio unit to stop performing the first operation includes an indirect manner and a direct manner.

The indirect method is that the baseband unit configures detection parameters for the first remote radio unit, the detection parameters are carried in the first information and indicated to the first remote radio unit, and the first remote radio unit detects whether a user or an effective user exists under the first remote radio unit according to the detection parameters indicated by the first information, and further determines whether to execute the first operation. Reference is made in particular to the embodiment shown in figure 3 below.

The direct mode is that the baseband unit directly detects whether a user or an effective user exists under the first remote radio unit, and directly instructs the first remote radio unit to stop executing the first operation through the first information when no user or no effective user exists under the first remote radio unit. Reference is made in particular to the embodiment shown in figure 4 below.

S102, the baseband unit sends first information to the first remote radio unit.

And S103, the first remote radio unit stops executing the first operation when the energy value of the first uplink signal corresponding to the first remote radio unit is smaller than a first preset value according to the first information.

Specifically, the first remote radio unit receives first information from the baseband unit, and according to the first information, when the energy value of a first uplink signal corresponding to the first remote radio unit is smaller than a first preset value, the first remote radio unit stops executing the first operation, that is, does not perform uplink transmission and/or downlink transmission, so that the number of remote radio units participating in radio frequency combining is reduced, thereby reducing uplink background noise and improving uplink transmission efficiency of the system.

If the energy value of the first uplink signal corresponding to the first remote radio unit is greater than or equal to the first preset value, it is determined that there is an active user under the first remote radio unit, and the first remote radio unit executes a first operation.

In some embodiments, in a case where the first remote radio unit stops performing the first operation, that is, when there is no user or no valid user under the first remote radio unit, in order to reduce energy consumption of the first remote radio unit, the first remote radio unit may reduce downlink transmission power, for example, reduce downlink transmission power of the first remote radio unit to 0.

In the information transmission method provided in the embodiment of the present application, the baseband unit generates first information, where the first information is used to instruct the first remote radio unit to stop executing the first operation when an energy value of a first uplink signal corresponding to the first remote radio unit is smaller than a first preset value, where the first remote radio unit is any one of multiple remote radio units of the network device. The first radio remote unit receives the first information, and stops executing the first operation according to the first information under the condition that the energy value of a first uplink signal corresponding to the first radio remote unit is smaller than a first preset value, so that the first radio remote unit stops uplink transmission and/or downlink transmission when the first radio remote unit has no user or no effective user, the number of radio remote units participating in radio frequency combining is reduced, uplink bottom noise is reduced, and the uplink transmission efficiency of the system is improved.

As can be seen from the above, the manners in which the baseband unit may instruct the first remote radio unit to stop performing the first operation through the first information include an indirect manner and a direct manner, which are described below with reference to specific examples.

First, referring to fig. 3, a description will be given of the baseband unit instructing the first remote radio unit to stop executing the first operation in an indirect manner.

Fig. 3 is another schematic flow chart of an information transmission method according to an embodiment of the present application, and as shown in fig. 3, the method according to the embodiment of the present application includes:

s201, the baseband unit generates first information.

The first information is specifically used to instruct the first remote radio unit to detect an energy value of the first uplink signal on the first frequency domain resource at the first time and a first preset value.

The manner in which the baseband unit determines the first frequency domain resource includes, but is not limited to, the following:

in a first manner, the first frequency domain resource is the entire bandwidth.

In a second mode, the first frequency domain resource includes a frequency domain resource for transmitting a first uplink signal of each terminal device within a coverage of the first remote radio unit. For example, if the first uplink signal is an SRS, the first frequency domain resource includes a frequency domain resource for transmitting the SRS of each terminal device in the coverage of the first remote radio unit. For example, if the first uplink signal is a PUSCH, the first frequency domain resource includes a frequency domain resource for transmitting a PUSCH of each terminal device within a coverage of the first remote radio unit. This ensures that the energy value of the first upstream signal is detected.

In a third manner, the first frequency domain resource is a frequency domain resource for transmitting the first uplink signal of each terminal device within the coverage of the first remote radio unit. For example, if the first uplink signal is an SRS, the first frequency domain resource is a frequency domain resource for transmitting the SRS of each terminal device within the coverage of the first remote radio unit. For example, if the first uplink signal is a PUSCH, the first frequency domain resource is a frequency domain resource for transmitting a PUSCH of each terminal device within the coverage of the first remote radio unit. Therefore, the detection range for detecting the first uplink signal can be reduced, and the detection efficiency is improved.

The manner in which the baseband unit determines the first time includes, but is not limited to, the following:

in a first manner, the first time is any time configured by the baseband unit, for example, the first time is 0.1ms (millisecond), and the first remote radio unit detects the energy value of the first uplink signal on the first frequency domain resource every 0.1ms.

In a second mode, the first time is configured by the baseband unit according to a polling function of the remote radio units, specifically, as shown in table 1, for example, one aggregation unit is connected to n remote radio units, and the baseband unit configures different times for receiving uplink information for the n remote radio units:

TABLE 1

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As can be seen from table 1, at time 1, the remote radio unit 1 is turned on to receive the first uplink signal sent by each terminal device within the coverage area of the remote radio unit 1, and the other remote radio units are turned off to be unable to receive the first uplink signal sent by the terminal devices within the coverage areas. At time i, the remote radio unit i is turned on, the remote radio unit i can receive the first uplink signal sent by each terminal device within the coverage area of the remote radio unit i, and the other remote radio units are turned off and cannot receive the first uplink signal sent by the terminal devices within the coverage areas.

Optionally, the baseband unit configures table 1, and sends table 1 to each remote radio unit, so that each remote radio unit is periodically turned on according to table 1, and can receive a first uplink signal sent by a terminal device in its coverage area. Therefore, when the radio frequency is combined, the convergence unit combines one radio remote unit, so that the baseband unit only receives uplink data corresponding to one radio remote unit at the same time, and uplink isolation of each radio remote unit is realized.

Based on the above description, the first remote radio unit may obtain the corresponding first time according to table 1 sent by the baseband unit, and send the first uplink signal received at the first time from each terminal device in the coverage range to the baseband unit through the aggregation unit, so that the baseband unit only receives the first uplink signal corresponding to one first remote radio unit at the first time. For example, if the first uplink signal is an SRS, the first remote radio unit receives, at the first time, an SRS transmitted from each terminal device within the coverage area, and transmits the received SRS to the baseband unit through the aggregation unit, so that the baseband unit only receives the SRS from one corresponding first remote radio unit at the first time. If the first uplink signal is a PUSCH, the first radio remote unit receives a PUSCH transmitted from each terminal device within the coverage area at the first time, and transmits the received PUSCH to the baseband unit through the aggregation unit, so that the baseband unit only receives a PUSCH corresponding to one first radio remote unit at the first time.

In a third manner, the baseband unit determines a first time according to the time domain resource of the first uplink signal, that is, the first time is a time when each terminal device within the coverage area of the first radio remote unit transmits the first uplink signal, for example, if the first uplink signal is an SRS, the first time is an SRS timeslot for transmitting the SRS of each terminal device within the coverage area of the first radio remote unit; if the first uplink signal is a PUSCH, the first time is a PUSCH slot for transmitting each terminal device within the coverage of the first remote radio unit, where the slot for transmitting the SRS or the PUSCH of each terminal device is configured in advance by the baseband unit.

The mode of determining the first preset value by the baseband unit includes, but is not limited to, the following:

in a first manner, the baseband unit determines a first preset value according to a historical energy value of the first uplink signal, for example, at a historical time, a terminal device within a coverage area of the first radio remote unit transmits the first uplink signal 1, and if the energy value of the first radio remote unit receiving the first uplink signal 1 is a, the baseband unit determines that the first preset value is smaller than a.

In the second mode, the first preset value is related to a signal interference value of an adjacent radio remote unit of the first radio remote unit to the first radio remote unit at the current time, that is, the baseband unit determines the first preset value according to the signal interference value of the adjacent radio remote unit of the first radio remote unit to the first radio remote unit at the current time. For example, if the adjacent radio remote unit of the first radio remote unit is the radio remote unit 2, and the signal interference value of the radio remote unit 2 to the first radio remote unit at the current time is b, the baseband unit determines that the first preset value is greater than or equal to b.

Specifically, the signal interference value of an adjacent radio remote unit (for example, the radio remote unit 2) of the first radio remote unit to the first radio remote unit means that the first radio remote unit receives an energy value of an uplink signal sent from each terminal device within a coverage area of the radio remote unit 2, and determines the energy value as the signal interference value of the first radio remote unit.

It should be noted that, in the above description, the adjacent remote radio unit of the first remote radio unit is taken as one remote radio unit 2 as an example, when the adjacent remote radio unit of the first remote radio unit includes a plurality of remote radio units, a sum of signal interference values of each remote radio unit in the plurality of remote radio units to the first remote radio unit may be determined as a signal interference value of the adjacent remote radio unit of the first remote radio unit. For example, the neighboring remote radio units of the first remote radio unit include a remote radio unit 2 and a remote radio unit 3, and assuming that the signal interference value of the remote radio unit 2 to the first remote radio unit at the current time is C1 and the signal interference value of the remote radio unit 3 to the first remote radio unit is C2, the signal interference value of the neighboring remote radio unit of the first remote radio unit to the first remote radio unit is C = C1+ C2.

Optionally, at different times, signal interference values of adjacent radio remote units of the first radio remote unit to the first radio remote unit may be different, so that when the baseband unit detects that the signal interference value changes, the first preset value may be updated in real time to the first radio remote unit, so that the first radio remote unit may more accurately determine whether to stop executing the first operation based on the real-time updated first preset value.

S202, the baseband unit sends the first information to the first remote radio unit.

The baseband unit generates the first information according to the method of S201, and then sends the first information to the first remote radio unit.

Optionally, the first information may be carried in a first signaling, where the first signaling may be a higher layer signaling or a physical layer signaling. The higher layer signaling may refer to signaling sent by a higher layer protocol layer, and the higher layer protocol layer is at least one protocol layer above a physical layer. The higher layer protocol layer may specifically include at least one of the following protocol layers: a Medium Access Control (MAC) layer, a Radio Link Control (RLC) layer, a Packet Data Convergence Protocol (PDCP) layer, a Radio Resource Control (RRC) layer, and a non-access stratum (NAS) layer. That is, the higher layer signaling may be, for example, MAC signaling, RLC signaling, PDCP signaling, RRC signaling, or NAS signaling. When the first signaling is physical layer signaling, the first signaling may be a PDCCH carrying Downlink Control Information (DCI).

Optionally, the first information may be carried in DCI.

As can be seen from S201, the content indicated by the first information includes: the device comprises a first time, a first frequency domain resource and a first preset value. Thus, the baseband unit may use a plurality of bits to indicate the content, and the plurality of bits may belong to one field or different fields. Optionally, when the first information is carried in the DCI, the field may be a scaling factor field in the DCI.

S203, the first remote radio unit detects an energy value of the first uplink signal on the first frequency domain resource at a first time.

Specifically, the first remote radio unit detects an energy value of the first uplink signal in the first frequency domain resource at a first time according to the first information sent by the baseband unit.

A detailed description is given below, with reference to a specific example, of a process of detecting, by a first remote radio unit, an energy value of a first uplink signal on a first frequency-domain resource at a first time.

For example, assuming that the first uplink signal is an SRS, the SRS is transmitted in the last symbol of a normal uplink subframe (except for a special subframe), for example, in the last symbol of an S subframe. In a Time Division Duplex (TDD) frame structure, when the length of an Uplink Pilot TimeSlot (UpPTS) is two symbols, both symbols may be configured for SRS transmission. When a Single-carrier Frequency-Division Multiple Access (SC-FDMA) symbol is located in the UpPTS, the symbol may be used for SRS transmission; if there are two SC-FDMA symbols in UpPTS, they can both be used for SRS transmission and can be allocated to the same terminal device.

The SRS is mainly used for estimating the quality of an uplink channel, and the scheduler of the baseband unit may allocate a Resource Block (RB) with a good instantaneous channel state to the uplink PUSCH transmission of the terminal device according to the uplink channel state estimation. The SRS may also be used to estimate uplink timing, uplink beam management, and the like.

The terminal equipment in the connected state periodically transmits the SRS for estimating the uplink channel quality, and the like, so that the first remote radio unit detects, at each first time, the energy value of the SRS transmitted by the terminal equipment in the coverage area of the first remote radio unit in the first frequency domain resource, so as to determine whether there is terminal equipment in the connected state under the first remote radio unit at the current time. For example, the first time is a time indicated in table 1, that is, the first time is a time when the first remote radio unit receives the first uplink signal of each terminal device in the coverage area, and other remote radio units do not receive the first uplink signal of each terminal device in the coverage area, and the first frequency domain resource is a symbol for transmitting the SRS, so that the first remote radio unit periodically performs energy detection on the symbol for transmitting the SRS at the first time.

Optionally, the energy value of the SRS may be Reference Signal Receiving Power (RSRP) of the SRS.

In the second example, assuming that the first uplink signal is a PUSCH, the terminal device transmits uplink data through the PUSCH, and thus, the first remote radio unit detects, at a first time, an energy value of a PUSCH transmitted by the terminal device within a coverage of the first remote radio unit on a first frequency domain resource, so as to determine whether there is an effective user under the first remote radio unit at the current time. For example, the first time is a time indicated in table 1, that is, the first time is a time when the first remote radio unit receives the first uplink signal of each terminal device in the coverage area, and the other remote radio units do not receive the first uplink signal of each terminal device in the coverage area, and the first frequency domain resource is an RB for transmitting a PUSCH, so that the first remote radio unit performs energy detection on the RB for transmitting the PUSCH at the first time.

In an example three, assuming that the first uplink signal is an SRS and a PUSCH, the first remote radio unit detects, at the first time, energy values of the SRS and the PUSCH transmitted by the terminal device in the coverage of the first remote radio unit on the first frequency domain resource, so as to determine whether there is an effective user under the first remote radio unit at the current time. For example, the first time is a time indicated in table 1, that is, the first time is a time when the first remote radio unit receives the first uplink signal of each terminal device in the coverage area, and other remote radio units do not receive the first uplink signal of each terminal device in the coverage area, and the first frequency domain resource is the whole bandwidth, so that the first remote radio unit performs full bandwidth detection at the first time to detect energy values of an SRS and a PUSCH transmitted by the terminal device in the coverage area of the first remote radio unit. Or, the first frequency domain resource includes a frequency domain resource for transmitting the SRS and a frequency domain resource for transmitting the PUSCH, so that the first remote radio unit performs energy detection on the frequency domain resource for transmitting the SRS and the frequency domain resource for transmitting the PUSCH at the first time.

And S204, when the energy value of the first uplink signal is smaller than a first preset value, the first remote radio unit stops executing the first operation.

Specifically, the first remote radio unit detects an energy value of the first uplink signal in the first frequency domain resource at a first time according to the method of S203, and when the energy value of the first uplink signal is lower than a first preset value, it indicates that there is no user or no valid user under the first remote radio unit, and the first remote radio unit stops executing the first operation.

When the energy value of the first uplink signal is greater than or equal to the first preset value, it indicates that there is a user in a connected state or there is an active user (i.e., there is a user sending uplink information) under the first radio remote unit, and the first radio remote unit still maintains the current transmission state, i.e., may perform uplink transmission.

According to the method, the baseband unit configures the first time, the first preset value and the first frequency domain resource to the first radio remote unit, the first radio remote unit detects the energy value of the first uplink signal on the first frequency domain resource at the first time, and when the energy value of the first uplink signal is smaller than the first preset value, the first radio remote unit stops executing the first operation, so that the first radio remote unit automatically detects whether to execute the first operation without the baseband unit for indication, the information interaction flow is simplified, and the information transmission efficiency of the system is improved.

With reference to fig. 4, the baseband unit directly instructs the first remote radio unit to stop executing the first operation, that is, the baseband unit implements the energy value detection of the first uplink signal.

Fig. 4 is another schematic flow chart of an information transmission method provided in the embodiment of the present application, and as shown in fig. 4, the method in the embodiment of the present application includes:

s301, the baseband unit detects an energy value of the first uplink signal on the first frequency domain resource at the first time.

Specifically, the baseband unit receives uplink information from the first remote radio unit at a first time, and detects an energy value of a first uplink signal of the first frequency domain resource.

Optionally, the first time includes a time when the first remote radio unit receives the first uplink signal of each terminal device in the coverage area, and the other remote radio units do not receive the first uplink signal of each terminal device in the coverage area.

With reference to a specific example, a detailed description is given below of a process of detecting, by the baseband unit, an energy value of the first uplink signal on the first frequency-domain resource at the first time.

In an example, taking the first uplink signal as the SRS, the first remote radio unit receives, at the first time, the SRS sent by each terminal device in the coverage area of the first remote radio unit, and sends the received SRS to the baseband unit through the aggregation unit. The baseband unit receives uplink information sent by the first remote radio unit at a first time, and detects an energy value of the SRS on the first frequency domain resource. Optionally, the first frequency-domain resource is a symbol for transmitting SRS.

In a second example, taking the first uplink signal as the PUSCH, the first radio remote unit receives, at the first time, the PUSCH transmitted by each terminal device in the coverage area of the first radio remote unit, and sends the received PUSCH to the baseband unit through the aggregation unit. The baseband unit receives uplink information sent by the first remote radio unit at a first time, and detects an energy value of a PUSCH (physical uplink shared channel) on a first frequency domain resource. Optionally, the first frequency domain resource may be an RB for transmitting PUSCH.

In a third example, taking the first uplink signal as the SRS and the PUSCH as an example, the first remote radio unit receives, at the first time, the SRS and the PUSCH transmitted by each terminal device in the coverage area of the first remote radio unit, and sends the received SRS and the received PUSCH to the baseband unit through the aggregation unit. The baseband unit receives uplink information sent by the first remote radio unit at a first time, and detects energy values of an SRS and a PUSCH on a first frequency domain resource. Optionally, the first frequency domain resource is the entire bandwidth. Optionally, the first frequency-domain resource includes an RB for transmitting PUSCH and a symbol for transmitting SRS.

In this embodiment of the application, a process of detecting, by the baseband unit, the energy value of the first uplink signal on the first frequency domain resource at the first time is substantially the same as a process of detecting, by the first remote radio unit, the energy value of the first uplink signal on the first frequency domain resource at the first time, and reference may be made to the description of S203 above.

S302, the baseband unit generates first information when the energy value of the first uplink signal is smaller than a first preset value.

The first information is specifically used for instructing the first remote radio unit to stop executing the first operation.

The manner of determining the first preset value by the baseband unit refers to the description of S201 above, and is not described herein again.

The base band unit generates first information when detecting that the energy value of the first uplink signal on the first frequency domain resource is smaller than a first preset value at a first time.

When the baseband unit detects that the energy value of the first uplink signal in the first frequency domain resource is greater than or equal to the first preset value at the first time, it may not send information to the first remote radio unit, or send instruction information for instructing to execute the first operation to the first remote radio unit.

Optionally, the first information includes identification information of stopping executing the first operation, for example, the identification information of stopping executing the first operation is 1.

S303, the baseband unit sends the first information to the first remote radio unit.

Optionally, the first information may be carried in higher layer signaling, and the higher layer signaling may be, for example, MAC signaling, RLC signaling, PDCP signaling, RRC signaling, or NAS signaling.

Optionally, the first information may be carried in physical layer signaling, where the physical layer signaling is, for example, a PDCCH carrying DCI.

Optionally, the first information may be carried in DCI.

For example, when the first information includes identification information for stopping performing the first operation, the baseband unit may indicate the identification information for stopping performing the first operation through a field occupying one or two bits, for example, the baseband unit may indicate the identification information through one field in DCI or RRC signaling. Optionally, the field may be a newly added DCI field or RRC field, or may be a redundant state value of an existing field in the DCI or RRC. Optionally, when the first information is carried in DCI, the field may be a scaling factor field in the DCI.

Taking the identifier information for stopping the execution of the first operation as 1, a field with two bits is used to indicate the identifier information for stopping the execution of the first operation, and the correspondence between the value of the field and the identifier information for stopping the execution of the first operation can be shown in the following table 2:

TABLE 2

It should be noted that the identification information for stopping performing the first operation shown in table 2 is 1, which is only an example, and the identification information for stopping performing the first operation includes but is not limited to number 1, and may also be other numbers, letters, special symbols, special figures, and the like, for example, which is not limited in this application.

S304, the first remote radio unit stops executing the first operation according to the indication of the first information.

Specifically, the first remote radio unit receives the first information from the baseband unit, analyzes the first information, and then stops executing the first operation according to the indication of the first information, thereby reducing the number of remote radio units participating in radio frequency combining, reducing uplink background noise, and improving uplink transmission effect.

Taking the example that the first information includes the identification information for stopping executing the first operation, after receiving the first information, the first remote radio unit parses the scaling factor field in the DCI, as shown in table 2, the field is 01, the field corresponds to 1, and 1 is the identification information for stopping executing the first operation, so that the first remote radio unit stops executing the first operation according to the identification information for stopping executing the first operation.

In the method of the embodiment, the baseband unit detects an energy value of a first uplink signal on a first frequency domain resource at a first time, and generates first information when the baseband unit detects that the energy value of the first uplink signal is smaller than a first preset value, and sends the generated first information to the first remote radio unit, where the first information is used to instruct the first remote radio unit to stop executing a first operation. And after receiving the first information, the first remote radio unit stops executing the first operation according to the indication of the first information. According to the embodiment of the application, the baseband unit completes the energy value detection of the first uplink signal, and due to the fact that the data processing capacity of the baseband unit is strong, the efficiency of the energy value detection of the first uplink signal is improved, and the first remote radio unit does not need to perform energy value detection, and therefore the energy consumption of the first remote radio unit is reduced.

In the embodiments shown in fig. 2 to fig. 4, it is described that the first remote radio unit stops executing the first operation when the energy value of the first uplink signal is smaller than the first preset value, and on this basis, as shown in fig. 5 and fig. 6, the method of the embodiment of the present application further includes a process of the first remote radio unit stopping executing the first operation and switching to executing the first operation.

The method for switching the first remote radio unit from stopping executing the first operation to executing the first operation includes two ways: in the first mode, the first remote radio unit detects the energy value of the second uplink signal by itself, and executes the first operation when the energy value of the second uplink signal is greater than the second preset value. In the second mode, the baseband unit instructs the first remote radio unit to perform the first operation under the preset condition.

First, the first mode will be described in detail with reference to fig. 5.

Fig. 5 is another schematic flow chart of the information transmission method according to the embodiment of the present application, and as shown in fig. 5, a process of switching from stopping execution of the first operation to execution of the first operation by the first remote radio unit includes:

s401, the baseband unit sends second information to the first remote radio unit.

The second information is used to indicate a second preset value, and a second time for detecting an energy value of the second uplink signal in the second frequency domain resource after the first remote radio unit stops executing the first operation.

It should be noted that there is no time sequence between the baseband unit sending the first information and sending the second information to the first remote radio unit, that is, the baseband unit may send the first information and then send the second information to the first remote radio unit first, or the baseband unit may send the second information and then send the first information to the first remote radio unit first, or the baseband unit sends the second information and the first information to the first remote radio unit at the same time.

Optionally, the second information may be carried in a second signaling, where the second signaling may be a higher layer signaling or a physical layer signaling. The higher layer protocol layer may specifically include at least one of the following protocol layers: a MAC layer, an RLC layer, a PDCP layer, an RRC layer, and an NAS layer. That is, the higher layer signaling may be, for example, MAC signaling, RLC signaling, PDCP signaling, RRC signaling, or NAS signaling. When the second signaling is physical layer signaling, the second signaling may be a PDCCH carrying DCI.

Optionally, the second information may be carried in DCI.

The second uplink information includes a preset reference signal and/or a preset physical uplink channel.

Wherein, the preset reference information may be: and uplink reference information such as SRS, DMRS and DRS.

The preset physical uplink channel may be: and physical uplink channels such as PUSCH, PUCCH and PRACH.

The manner in which the baseband unit determines the second frequency domain resource includes, but is not limited to, the following:

in a first manner, the second frequency domain resource is the entire bandwidth.

In a second mode, the partial bandwidth of the second frequency domain resource includes the frequency domain resource for transmitting the second uplink signal of each terminal device within the coverage of the first remote radio unit. For example, if the second uplink signal is an SRS, the second frequency domain resource includes a frequency domain resource for transmitting the SRS of each terminal device in the coverage of the first remote radio unit. For example, if the second uplink signal is a PARCH, the second frequency domain resource includes frequency domain resources for transmitting the PARCH of each terminal device within the coverage of the first radio remote unit. This ensures that the energy level of the second uplink signal is detected.

In a third manner, the second frequency domain resource is a frequency domain resource for transmitting a second uplink signal of each terminal device within the coverage of the first remote radio unit. For example, if the second uplink signal is an SRS, the second frequency domain resource is a frequency domain resource for transmitting the SRS of each terminal device in the coverage of the first remote radio unit. For example, if the second uplink signal is a PARCH, the second frequency domain resource is a frequency domain resource for transmitting the PARCH of each terminal device within the coverage of the first remote radio unit. Therefore, the detection range of the energy value of the second uplink signal can be reduced, and the detection efficiency is improved.

The second time is any time configured by the baseband unit, the baseband unit configures different second times for each remote radio unit, and each remote radio unit detects the energy value of the corresponding second uplink signal at the respective second time in a polling manner.

For example, as shown in table 3, for example, one aggregation unit is connected to n remote radio units, and the baseband unit configures different second times for the n remote radio units:

TABLE 3

As can be seen from table 3, it is assumed that the first remote radio unit is a remote radio unit i, and the second time corresponding to the first remote radio unit is time ti, so that the remote radio unit i wakes up at the time ti, and detects an energy value of a second uplink signal sent by the terminal device within a coverage area of the remote radio unit i on the second frequency domain resource corresponding to the remote radio unit i.

Optionally, the baseband unit configures table 3, and sends table 3 to each remote radio unit, so that each remote radio unit wakes up periodically according to table 3 to detect whether a connected terminal device moves into its coverage area, or to detect whether a terminal device initiates random access within its coverage area.

Optionally, in order to prevent the radio remote unit from waking up frequently to consume energy, the time interval between two adjacent second times is greater than the time interval between two adjacent first times. For example, in table 1, the time interval between adjacent time 1 and time 2 is 0.01ms, and in table 3, the time interval between adjacent time t1 and time t2 is 0.1ms.

The manner of determining the second preset value by the baseband unit includes, but is not limited to, the following:

in a first manner, the baseband unit determines a second preset value according to the historical energy value of the second uplink signal, for example, at historical time 1, one terminal device within the coverage of the first remote radio unit transmits the second uplink signal 2, and if the energy value of the second uplink signal 2 received by the first remote radio unit is d, the baseband unit determines that the second preset value is greater than or equal to d.

In a second mode, the second preset value is related to a historical energy value of a second uplink signal from the first terminal device received by the first remote radio unit, where the first terminal device is any terminal device located within a coverage area of an adjacent remote radio unit of the first remote radio unit. Namely, the baseband unit determines the second preset value according to the historical energy value of the second uplink signal from the first terminal device received by the first remote radio unit. For example, the adjacent radio remote unit of the first radio remote unit is the radio remote unit 2, at a certain historical time, the first terminal device within the coverage of the radio remote unit 2 sends the second uplink signal to the radio remote unit 2, and if the energy value of the second uplink signal received by the first radio remote unit from the first terminal device is e, the baseband unit determines the second preset value according to e.

Optionally, the second preset value is greater than or equal to the historical energy value, for example, the second preset value is greater than or equal to e.

It should be noted that, in the above description, the adjacent remote radio unit of the first remote radio unit is taken as an remote radio unit 2 as an example, when the adjacent remote radio unit of the first remote radio unit includes a plurality of remote radio units, the second preset value may be determined according to a sum of energy values of the second uplink signals, received by the first remote radio unit at the same historical time and from each terminal device covered by each remote radio unit in the plurality of remote radio units. For example, adjacent radio remote units of the first radio remote unit include a radio remote unit 2 and a radio remote unit 3, and assuming that, at historical time 1, the sum of energy values of the second uplink signals received by the first radio remote unit from the terminal devices in the lower range covered by the radio remote unit 2 is e1, and the sum of energy values of the second uplink signals received by the first radio remote unit from the terminal devices in the lower range covered by pRR and 3 is e2, it may be determined that the second preset value is greater than or equal to e1+ e2.

S402, the first remote radio unit detects an energy value of the second uplink signal on the second frequency domain resource at the second time when the first operation is stopped.

Specifically, after receiving the second information from the baseband unit, the first remote radio unit parses the second information to obtain the second time, the second frequency domain resource, and the second preset value indicated by the second information. In this way, the first remote radio unit detects the energy value of the second uplink signal on the second frequency domain resource at the second time under the condition of stopping executing the first operation.

The following describes, with reference to a specific example, a process of the first remote radio unit detecting an energy value of the second uplink signal on the second frequency-domain resource at the second time in detail.

In an example, assuming that the second uplink signal is an SRS, the connected terminal device periodically transmits the SRS, so that when the first remote radio unit that stops performing the first operation wakes up at the second time, it may be determined whether a connected user enters a coverage area of the first remote radio unit at the current time by detecting an SRS energy value on the second frequency domain resource. For example, the second time is the time indicated in table 3, and the second frequency domain resource is the entire bandwidth or a part of the bandwidth, so that the first remote radio unit wakes up at the second time, and detects the energy value of the SRS sent by the terminal device in the coverage area of the first remote radio unit over the entire bandwidth or the part of the bandwidth, so as to determine whether a connected user enters the coverage area of the first remote radio unit at the current time.

In the second example, assuming that the first uplink signal is PARCH, when an idle terminal device needs to establish a connection, random access is initiated in a specific timeslot. Therefore, when the first remote radio unit stopping executing the first operation is awakened at the second time, whether an idle user is accessed in the coverage area of the first remote radio unit at the current moment can be judged by detecting the PARCH energy value on the second frequency domain resource. For example, the second time is the time indicated in table 3, and the second frequency domain resource is the RB for transmitting PARCH, so that the first remote radio unit wakes up at the second time, and detects the energy value of the PARCH sent by the terminal device within the coverage of the first remote radio unit on the RB for transmitting PARCH, so as to determine whether there is idle user access within the coverage of the first remote radio unit at the current time.

In a third example, assuming that the first uplink signal is SRS and PARCH, the first remote radio unit that stops executing the first operation wakes up at the second time, and detects energy values of SRS and PARCH sent by the terminal device within the coverage of the first remote radio unit on the second frequency domain resource, so as to determine whether there is an active user within the coverage of the first remote radio unit at the current time, that is, whether there is an access of a connected terminal device or an access of an idle terminal device.

And S403, the first remote radio unit executes a first operation when the energy value of the second uplink signal is greater than a second preset value.

Specifically, the first remote radio unit detects, according to the method in S402, the energy value of the second uplink signal in the second frequency domain resource at the second time, and when the energy value of the second uplink signal is greater than the second preset value, it indicates that a connected terminal device enters the coverage area of the first remote radio unit at the current time, or an idle terminal device is accessed, and the first remote radio unit performs the first operation to perform uplink and downlink transmission.

For example, assuming that the second uplink signal is an SRS, the first remote radio unit wakes up at the second time, detects an SRS energy value in the second frequency domain resource, and when the detected SRS energy value is greater than a second preset value, it indicates that the terminal device in the connected state moves to the coverage of the first remote radio unit, and the first remote radio unit starts to perform the first operation.

For example, assuming that the second uplink signal is a PARCH, the first remote radio unit wakes up at the second time, detects a PARCH energy value on the second frequency domain resource, and when the detected PARCH energy value is greater than a second preset value, it indicates that an idle terminal device is available in the coverage of the first remote radio unit, and the first remote radio unit starts to perform the first operation.

In the method of the embodiment, the baseband unit configures a second time, a second preset value and a second frequency domain resource to the first remote radio unit, the first remote radio unit wakes up at the second time to detect the energy value of the second uplink signal in the second frequency domain resource, and when the energy value of the second uplink signal is greater than the second preset value, the first remote radio unit starts to execute a first operation to perform uplink and downlink transmission, thereby ensuring the reliability of information transmission.

Next, with reference to fig. 6, a specific process of the baseband unit instructing the first remote radio unit to switch from stopping executing the first operation to executing the first operation under a preset condition is described.

Fig. 6 is another schematic flow chart of the information transmission method according to the embodiment of the present application, and as shown in fig. 6, a process of the baseband unit instructing the first remote radio unit to switch from stopping executing the first operation to executing the first operation includes:

s501, the baseband unit determines at least one second remote radio unit adjacent to the first pRUU based on the topological relation of the remote radio units.

The second remote radio unit is an adjacent remote radio unit of the first remote radio unit.

The ways for the baseband unit to obtain the topology relationship of the remote radio unit include, but are not limited to, the following:

in a first mode, when networking is performed, a worker sends the position information of each remote radio unit to the baseband unit, and the baseband unit can obtain the topological relation of the remote radio units according to the position information of each remote radio unit.

In the second mode, the baseband unit determines the topological relation of the remote radio units according to the signal energy values received by different remote radio units from the same terminal device, for example, when the signal energy values received by two remote radio units with respect to the same terminal device are similar, it may be determined that the two remote radio units are adjacent remote radio units.

In this way, the baseband unit may obtain at least one adjacent remote radio unit of the first remote radio unit according to the topological relation of the remote radio units, and mark the at least one adjacent remote radio unit as the second remote radio unit.

S502, for each second remote radio unit, when detecting that the energy value of the first uplink signal of each terminal device in the coverage area of the second remote radio unit is greater than the first preset value, the baseband unit determines that at least one terminal device is in a connected state under the coverage of the second remote radio unit.

For each second remote radio unit, the baseband unit detects an energy value of the first uplink signal of each terminal device within the coverage area of the second remote radio unit, with reference to the method described in any embodiment of fig. 2 to 4. And when the detected energy value of the first uplink signal of each terminal device in the coverage range of the second remote radio unit is greater than a first preset value, determining that at least one terminal device under the coverage of the second remote radio unit is in a connection state.

When the baseband unit determines that at least one terminal device under the coverage of the second remote radio unit is in the connected state, and in order to prevent the terminal device in the connected state from moving to the first remote radio unit, the first remote radio unit further instructs, according to the method shown in fig. 5, the first remote radio unit that stops executing the first operation to switch to the state that executes the first operation in advance, so as to prevent time waste when the first remote radio unit stops executing the first operation and switches to execute the first operation, for example, the first remote radio unit that is in the dormant state is awakened in advance, so as to improve the information transmission efficiency.

S503, the baseband unit sends the third information to the first remote radio unit.

The third information is used for instructing the first remote radio unit to execute the first operation.

Specifically, when the baseband unit determines that at least one terminal device is in a connected state under the coverage of the second remote radio unit, the baseband unit sends third information to the first remote radio unit, where the third information is used to instruct the first remote radio unit to switch from a state where the first operation is stopped to a state where the first operation is executed in advance.

Optionally, the third information may be carried in a third signaling, where the third signaling may be a higher layer signaling or a physical layer signaling. The higher layer protocol layer may specifically include at least one of the following protocol layers: a MAC layer, an RLC layer, a PDCP layer, an RRC layer, and an NAS layer. That is, the higher layer signaling may be, for example, MAC signaling, RLC signaling, PDCP signaling, RRC signaling, or NAS signaling. When the third signaling is physical layer signaling, the third signaling may be a PDCCH carrying DCI.

Optionally, the third information may be carried in DCI.

Optionally, the third information includes identification information for performing the first operation, for example, the identification information for performing the first operation is 0.

For example, when the third information includes identification information for performing the first operation, the baseband unit may indicate the identification information for performing the first operation through a field occupying one or two bits, for example, the baseband unit may indicate the identification information through one field in DCI or RRC signaling. Optionally, the field may be a newly added DCI field or RRC field, or may be a redundant state value of an existing field in the DCI or RRC. Optionally, when the third information is carried in the DCI, the field may be a scaling factor field in the DCI.

Taking the identification information for executing the first operation as 0 for example, a field with two bits is used to indicate the identification information for executing the first operation, and the correspondence between the value of the field and the identification information for executing the first operation can be shown in the following table 4:

TABLE 4

Field(s)	Identification information for performing a first operation
		00	0

It should be noted that the identification information for performing the first operation shown in table 4 is 0, which is only an example, and the identification information for performing the first operation includes, but is not limited to, the number 0, and may also be other numbers, or letters, or special symbols, and special figures, etc., which is not limited in this application.

And S504, the first remote radio unit executes a first operation according to the third information.

Specifically, the first remote radio unit receives the third information from the baseband unit, analyzes the third information, and then switches from the current first operation stop to the first operation execution according to the indication of the third information, so as to perform uplink and downlink transmission. According to the embodiment of the application, the first remote radio unit is switched to the state of starting to execute the first operation in advance according to the third information, so that when the terminal equipment in the connection state enters the coverage range of the first remote radio unit, the first remote radio unit can timely perform uplink and downlink transmission, and further the information transmission efficiency is improved.

In the method of the embodiment of the application, the baseband unit determines, according to the topology relationship of the radio remote units, at least one second radio remote unit adjacent to the first radio remote unit, and for each second radio remote unit, the baseband unit determines that at least one terminal device is in a connected state under the coverage of the second radio remote unit when detecting that the energy value of the first uplink signal of each terminal device in the coverage of the second radio remote unit is greater than a first preset value. At this time, the baseband unit sends the third information to the first remote radio unit, so that the first remote radio unit is switched from a state of stopping executing the first operation to a state of executing the first operation in advance, and thus when the connected terminal device under the coverage of the second remote radio unit enters the coverage range of the first remote radio unit, the first remote radio unit can perform uplink and downlink transmission in time, and further the information transmission efficiency is improved.

Fig. 7 is a schematic structural diagram of an information transmission apparatus according to an embodiment of the present application. The information transmission apparatus may be a first remote radio unit, or may be a component (e.g., an integrated circuit, a chip, etc.) of the first remote radio unit, as shown in fig. 7, the information transmission apparatus 200 may include: a receiving unit 210 and a processing unit 220;

a receiving unit 210, configured to receive first information from a baseband unit, where the first information is used to instruct a first remote radio unit to stop executing a first operation when an energy value of a first uplink signal corresponding to the first remote radio unit is smaller than a first preset value, and the first remote radio unit is any one of multiple remote radio units of a network device;

the processing unit 220 is configured to, according to the first information, stop performing a first operation when an energy value of a first uplink signal corresponding to the first radio remote unit is smaller than a first preset value, where the first operation includes uplink transmission and/or downlink transmission.

In some embodiments, the first information is specifically configured to instruct the first remote radio unit to detect an energy value of the first uplink signal on the first frequency domain resource at a first time, and a first preset value;

the processing unit 220 is specifically configured to detect an energy value of the first uplink signal on the first frequency domain resource at a first time; and stopping executing the first operation when the energy value of the first uplink signal is smaller than a first preset value.

In some embodiments, the processing unit 220 is specifically configured to stop performing the first operation according to an indication of first information, where the first information is specifically configured to instruct the first remote radio unit to stop performing the first operation, and the first information is sent by the baseband unit when the baseband unit detects that an energy value of the first uplink signal on the first frequency-domain resource is smaller than a first preset value at a first time.

In some embodiments, the processing unit 220 is further configured to reduce the downlink transmission power of the first remote radio unit if the first remote radio unit stops performing the first operation.

In some embodiments, the receiving unit 210 is configured to receive second information from the baseband unit, where the second information is used to indicate a second preset value, and detect a second time of an energy value of a second uplink signal on a second frequency domain resource after the first remote radio unit stops performing the first operation; under the condition that the first operation is stopped, detecting an energy value of a second uplink signal on a second frequency domain resource at a second time; and when the energy value of the second uplink signal is greater than a second preset value, executing a first operation.

In some embodiments, the receiving unit 210 is further configured to receive third information from the baseband unit, where the third information is used to instruct the first remote radio unit to perform the first operation;

the processing unit 220 is further configured to perform the first operation according to the third information.

The information transmission apparatus according to this embodiment of the present application may be configured to implement the technical solution of the first remote radio unit in the foregoing method embodiments, and the implementation principle and the technical effect are similar, which are not described herein again.

Fig. 8 is a schematic structural diagram of an information transmission apparatus according to an embodiment of the present application. The information transmission apparatus may be a baseband unit, or may be a component (e.g., an integrated circuit, a chip, etc.) of the baseband unit, as shown in fig. 8, the information transmission apparatus 300 may include: a processing unit 310 and a transmitting unit 320;

a processing unit 310, configured to generate first information, where the first information is used to instruct a first remote radio unit to stop executing a first operation when an energy value of a first uplink signal corresponding to the first remote radio unit is smaller than a first preset value, where the first remote radio unit is any one of multiple remote radio units of a network device, and the first operation includes uplink transmission and/or downlink transmission;

a sending unit 320, configured to send the first information to the first remote radio unit.

the first preset value is used for stopping the first remote radio unit from executing the first operation when the energy value of the first uplink signal corresponding to the first remote radio unit is smaller than the first preset value.

In some embodiments, the processing unit 310 is specifically configured to detect an energy value of a first uplink signal on a first frequency-domain resource at a first time; and when the energy value of the first uplink signal is smaller than a first preset value, generating first information, wherein the first information is specifically used for instructing the first radio remote unit to stop executing the first operation.

In some embodiments, the first frequency domain resource includes a frequency domain resource for transmitting a first uplink signal of each terminal device in a coverage of the first remote radio unit.

In some embodiments, the sending unit 320 is further configured to send second information to the first remote radio unit, where the second information is used to indicate a second preset value, and after the first remote radio unit stops performing the first operation, detect a second time of an energy value of the second uplink signal on the second frequency domain resource;

In some embodiments, the processing unit 310 is further configured to determine, based on the topological relation of the remote radio units, at least one second remote radio unit adjacent to the first remote radio unit; for each second remote radio unit, when detecting that the energy value of the first uplink signal of each terminal device in the coverage area of the second remote radio unit is greater than a first preset value, determining that at least one terminal device under the coverage of the second remote radio unit is in a connected state;

the sending unit 320 is further configured to send third information to the first remote radio unit, where the third information is used to instruct the first remote radio unit to execute the first operation.

The information transmission apparatus according to the embodiment of the present application may be configured to implement the technical solutions of the baseband unit in the foregoing method embodiments, and the implementation principles and technical effects thereof are similar and will not be described herein again.

Fig. 9 is a schematic structural diagram of a communication device according to an embodiment of the present application. As shown in fig. 9, the communication device 500 described in this embodiment may be a baseband processing unit (or a component that can be used for a baseband processing unit) mentioned in the foregoing method embodiment. The communication device may be configured to implement the method corresponding to the baseband processing unit described in the above method embodiment, and refer to the description in the above method embodiment specifically.

The communication device 500 may comprise one or more processors 501, which processors 501 may also be referred to as processing units and may implement certain control or processing functions. The processor 501 may be a general purpose processor or a special purpose processor, etc. For example, a baseband processor, or a central processor. The baseband processor may be used to process communication protocols and communication data, and the central processor may be used to control the communication device, execute software programs, and process data of the software programs.

In one possible design, processor 501 may also have stored instructions 503 or data (e.g., intermediate data). Therein, the instructions 503 may be executable by the processor to cause the communication device 500 to perform the method corresponding to the baseband processing unit described in the above method embodiment.

In yet another possible design, the communication device 500 may include circuitry that may implement the functionality of transmitting or receiving or communicating in the foregoing method embodiments.

Optionally, one or more memories 502 may be included in the communication device 500, on which instructions 504 may be stored, the instructions 504 being executable on the processor to cause the communication device 500 to perform the methods described in the above method embodiments.

Alternatively, the processor 501 and the memory 502 may be provided separately or integrated together.

Optionally, the communication device 500 may also include a transceiver 505 and/or an antenna 506. The processor 501 may be referred to as a processing unit for controlling the communication devices. The transceiver 505 may be referred to as a transceiving unit, a transceiver, a transceiving circuit, a transceiver, or the like, for implementing transceiving functions of the communication device.

In one design, if the communication device 500 is used to implement the operations corresponding to the baseband processing unit in the foregoing embodiments, for example, the processor 501 may generate first information, where the first information is used to indicate that a first remote radio unit stops executing a first operation when an energy value of a first uplink signal corresponding to the first remote radio unit is smaller than a first preset value, where the first remote radio unit is any one of multiple remote radio units of the network device, and the first operation includes uplink transmission and/or downlink transmission; the first information may be transmitted by transceiver 505 to the first remote radio unit.

For specific implementation processes of the transceiver 505 and the processor 501, reference may be made to the related descriptions of the embodiments, and details are not described herein.

The processor 501 and transceiver 505 described herein may be implemented on an Integrated Circuit (IC), an analog IC, a Radio Frequency Integrated Circuit (RFIC), a mixed signal IC, an Application Specific Integrated Circuit (ASIC), a Printed Circuit Board (PCB), an electronic device, or the like. The processor 501 and the transceiver 505 may also be fabricated using various 1C process technologies, such as Complementary Metal Oxide Semiconductor (CMOS), N-type metal oxide semiconductor (NMOS), P-type metal oxide semiconductor (PMOS), bipolar Junction Transistor (BJT), bipolar CMOS (CMOS), siGe (SiGe), gaAs (GaAs), and the like.

Although in the above description of the embodiment, the communication device 500 is described by taking a baseband processing unit as an example, the scope of the communication device described in the present application is not limited to the above baseband processing unit, and the structure of the communication device may not be limited by fig. 9.

The communication device in the embodiments of the present application may be configured to execute the technical solution of the baseband processing unit in each method embodiment, and the implementation principle and the technical effect are similar, which are not described herein again.

Fig. 10 is a schematic structural diagram of a communication device according to an embodiment of the present application. The communication device 700 described in this embodiment may be a baseband processing unit (or a component that can be used in the baseband processing unit) mentioned in the foregoing method embodiment, and may also be a first remote radio unit (or a component that can be used in the first remote radio unit) mentioned in the foregoing method embodiment. The communication device may be configured to implement the method corresponding to the baseband processing unit or the first remote radio unit described in the foregoing method embodiment, for specific reference to the description in the foregoing method embodiment.

The communication device 700 may implement the functions executed by the baseband processing unit or the first remote radio unit in the foregoing method embodiments, and the functions may be implemented by hardware, or may be implemented by hardware executing corresponding software. The hardware or software includes one or more modules or units corresponding to the above functions.

In one possible design, the communication device 700 includes a processor 701 and a communication interface 702 in its structure, and the processor 701 is configured to support the communication device 700 to execute the corresponding functions of the above-described method. The communication interface 702 is used to support communication between the communication device 700 and other network elements. The communication device 700 may also include a memory 703, the memory 703 for coupling with the processor 701 storing program instructions and data necessary for the communication device 700.

Those skilled in the art will appreciate that fig. 10 shows only one memory 703 and one processor 701 for ease of illustration. In an actual network device 700, there may be multiple processors 701 and multiple memories 703. The memory 703 may also be referred to as a storage medium or a storage device, and the like, which is not limited in this application.

The communication device in the embodiments of the present application may be configured to implement the technical solutions of the communication devices in the above method embodiments, and the implementation principle and the technical effects are similar, which are not described herein again.

Fig. 11 is a schematic structural diagram of an information transmission apparatus according to an embodiment of the present application. The device 800 is in the form of a chip, and the structure of the device includes a processor 801 and a memory 802, the memory 802 is used for coupling with the processor 801, the memory 802 stores necessary program instructions and data of the device, and the processor 801 is used for executing the program instructions stored in the memory 802, so that the device performs the functions of the baseband processing unit or the first remote radio unit in the above method embodiments.

The information transmission apparatus according to this embodiment of the present application may be configured to implement the technical solution of the baseband processing unit or the first remote radio unit in the foregoing method embodiments, and the implementation principle and the technical effect are similar, which are not described herein again.

Fig. 12 is a schematic structural diagram of a network device according to an embodiment of the present application. As shown in fig. 12, the network device 900 according to the embodiment of the present application includes the first remote radio unit 901 and the baseband processing unit 902.

The first radio remote unit 901 may be configured to implement a function of a first radio remote unit side in the foregoing method embodiment, and the baseband processing unit 902 may be configured to implement a function of a baseband processing unit side in the foregoing method embodiment, where implementation principles and technical effects are similar, and are not described herein again.

In the above embodiments, all or part of the implementation may be realized by software, hardware, firmware, or any combination thereof. When implemented in software, may be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. The procedures or functions described in accordance with the embodiments of the application are all or partially generated when the computer program instructions are loaded and executed on a computer. The computer may be a general purpose computer, a special purpose computer, a network of computers, or other programmable device. The computer instructions may be stored in a computer readable storage medium or transmitted from one computer readable storage medium to another, for example, from one website site, computer, server, or data center to another website site, computer, server, or data center via wired (e.g., coaxial cable, fiber optic, digital Subscriber Line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.). The computer-readable storage medium can be any available medium that can be accessed by a computer or a data storage device, such as a server, a data center, etc., that includes one or more available media. The usable medium may be a magnetic medium (e.g., floppy Disk, hard Disk, magnetic tape), an optical medium (e.g., DVD), or a semiconductor medium (e.g., solid State Disk (SSD)), among others.

It is clear to those skilled in the art that, for convenience and brevity of description, the specific working processes of the above-described systems, apparatuses and units may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again. In addition, the method embodiments and the device embodiments may also refer to each other, and the same or corresponding contents in different embodiments may be referred to each other, which is not described in detail.

Claims

1. An information transmission method, comprising:

a first radio remote unit receives first information from a baseband unit, wherein the first information is used for indicating the first radio remote unit to detect an energy value of a first uplink signal on a first frequency domain resource at a first time, and the first information is also used for indicating a first preset value, and the first preset value is used for detecting whether a user exists or whether an effective user exists under the first radio remote unit; the first remote radio unit detects an energy value of a first uplink signal on the first frequency domain resource at the first time;

and when the energy value of the first uplink signal is smaller than the first preset value, the first remote radio unit stops executing a first operation, wherein the first operation comprises uplink transmission and/or downlink transmission.

2. The method according to claim 1, wherein the first information is specifically configured to instruct a first remote radio unit to stop performing the first operation, and the first information is sent by the baseband unit when detecting that an energy value of the first uplink signal in a first frequency domain resource is smaller than the first preset value at a first time;

the first remote radio unit stops executing the first operation when the energy value of the first uplink signal corresponding to the first remote radio unit is smaller than a first preset value according to the first information, and the method includes:

and the first remote radio unit stops executing the first operation according to the indication of the first information.

3. The method according to claim 1 or 2, wherein the first uplink signal comprises a preset physical uplink channel and/or a preset reference signal.

4. The method according to claim 1 or 2, wherein the first frequency domain resource includes a frequency domain resource for transmitting the first uplink signal of each terminal device within the coverage of the first remote radio unit.

5. The method according to claim 1 or 2, wherein the first time includes a time when the first remote radio unit receives the first uplink signal of each terminal device in a coverage area, and other remote radio units do not receive the first uplink signal of each terminal device in the coverage area, and the other remote radio units are remote radio units other than the first remote radio unit among a plurality of remote radio units connected under one concentrator unit.

6. The method of claim 1 or 2, wherein the first preset value is related to a signal interference value of a neighboring remote radio unit of the first remote radio unit to the first remote radio unit at a current time.

7. The method according to claim 1 or 2, characterized in that the method further comprises:

and the first remote radio unit reduces downlink transmission power of the first remote radio unit under the condition that the first remote radio unit stops executing the first operation.

8. The method according to claim 1 or 2, characterized in that the method further comprises:

the first remote radio unit receives second information from the baseband unit, wherein the second information is used for indicating a second preset value, and the first remote radio unit detects a second time of an energy value of a second uplink signal on a second frequency domain resource after stopping executing the first operation;

under the condition of stopping executing the first operation, the first remote radio unit detects an energy value of the second uplink signal on the second frequency domain resource at the second time;

and when the energy value of the second uplink signal is greater than the second preset value, the first remote radio unit executes the first operation.

9. The method according to claim 8, wherein the second uplink signal comprises a predetermined physical uplink channel and/or a predetermined reference signal.

10. The method of claim 8, wherein the second frequency-domain resource includes a frequency-domain resource for transmitting the second uplink signal of each terminal device in the coverage of the first remote radio unit.

11. The method of claim 8, wherein the second predetermined value is related to a historical energy value of the second uplink signal received by the first remote radio unit from a first terminal device, and the first terminal device is any terminal device located in a coverage area of a neighboring remote radio unit of the first remote radio unit.

12. The method according to claim 1 or 2, characterized in that the method further comprises:

the first remote radio unit receives third information from the baseband unit, wherein the third information is used for instructing the first remote radio unit to execute the first operation;

and the first remote radio unit executes the first operation according to the third information.

13. An information transmission method, comprising:

the method comprises the steps that a baseband unit generates first information, the first information is used for indicating a first radio remote unit to stop executing a first operation when the energy value of a first uplink signal is smaller than a first preset value, and the first operation comprises uplink transmission and/or downlink transmission;

the baseband unit sends first information to the first remote radio unit;

the first information is specifically used to instruct the first remote radio unit to detect an energy value of the first uplink signal on the first frequency domain resource at a first time, and the first information is also used to instruct a first preset value, where the first preset value is used to detect whether a user or an active user exists under the first remote radio unit;

14. The method of claim 13, wherein the generating the first information comprises:

the baseband unit detects an energy value of the first uplink signal on a first frequency domain resource at a first time;

when the energy value of the first uplink signal is smaller than the first preset value, the baseband unit generates the first information, where the first information is specifically used to instruct the first radio remote unit to stop executing the first operation.

15. The method according to claim 13 or 14, wherein the first uplink signal comprises a predetermined physical uplink channel and/or a predetermined reference signal.

16. The method according to claim 13 or 14, wherein the first frequency domain resource includes a frequency domain resource for transmitting the first uplink signal of each terminal device in the coverage of the first remote radio unit.

17. The method according to claim 13 or 14, wherein the first time includes a time when the first remote radio unit receives the first uplink signal of each terminal device in a coverage area, and other remote radio units do not receive the first uplink signal of each terminal device in the coverage area, and the other remote radio units are remote radio units other than the first remote radio unit in a plurality of remote radio units connected under one aggregation unit.

18. The method of claim 13 or 14, wherein the first preset value is related to a signal interference value of a neighboring remote radio unit of the first remote radio unit to the first remote radio unit at a current time.

19. The method according to claim 13 or 14, characterized in that the method further comprises:

the baseband unit sends second information to the first remote radio unit, where the second information is used to indicate a second preset value, and the first remote radio unit stops executing the first operation and then detects a second time of an energy value of a second uplink signal in a second frequency domain resource;

the second preset value is used for the baseband unit to execute the first operation when the energy value of the second uplink signal detected by the first radio remote unit at the second time is greater than the second preset value.

20. The method of claim 19, wherein the second uplink signal comprises a predetermined physical uplink channel and/or a predetermined reference signal.

21. The method of claim 19, wherein the second frequency-domain resource comprises a frequency-domain resource for transmitting the second uplink signal of each terminal device within the coverage of the first remote radio unit.

22. The method of claim 19, wherein the second predetermined value is related to a historical energy value of the second uplink signal received by the first remote radio unit from a first terminal equipment, and the first terminal equipment is any terminal equipment located in a coverage area of a neighboring remote radio unit of the first remote radio unit.

23. The method according to claim 13 or 14, characterized in that the method further comprises:

based on the topological relation of remote radio units, the baseband unit determines at least one second remote radio unit adjacent to the first remote radio unit;

the baseband unit determines, for each second remote radio unit, that at least one terminal device is in a connected state under the coverage of the second remote radio unit when detecting that the energy value of the first uplink signal of each terminal device in the coverage of the second remote radio unit is greater than the first preset value;

and the baseband unit sends third information to the first remote radio unit, where the third information is used to instruct the first remote radio unit to execute the first operation.

24. An information transmission apparatus, comprising:

a receiving unit, configured to receive first information from a baseband unit, where the first information is used to indicate a first remote radio unit to detect an energy value of a first uplink signal on a first frequency domain resource at a first time, and the first information is also used to indicate a first preset value, where the first preset value is used to detect whether a user or a valid user exists under the first remote radio unit;

a processing unit, configured to detect, by a first remote radio unit, an energy value of a first uplink signal on the first frequency domain resource at the first time; and when the energy value of the first uplink signal is smaller than the first preset value, the first remote radio unit stops executing a first operation, where the first operation includes uplink transmission and/or downlink transmission.

25. An information transmission apparatus, comprising:

a processing unit, configured to generate first information, where the first information is used to instruct a first radio remote unit to detect an energy value of a first uplink signal in a first frequency domain resource at a first time, and the first information is further used to instruct a first preset value, where the first preset value is used to detect whether a user or a valid user exists under the first radio remote unit; the first remote radio unit detects an energy value of a first uplink signal on the first frequency domain resource at the first time;

when the energy value of the first uplink signal is smaller than the first preset value, the first radio remote unit stops executing a first operation, wherein the first operation comprises uplink transmission and/or downlink transmission; and the sending unit is used for sending first information to the first remote radio unit.

26. An information transmission apparatus, comprising: a processor and a transceiver for performing the method of any one of claims 1 to 12, or 13 to 23.

27. A computer storage medium, characterized by a computer-readable program stored thereon, which, when read and executed, causes an information transmission apparatus to execute the method according to any one of claims 1 to 12, or claims 13 to 23.