Method for adjusting radio frequency unit, and communication apparatus and communication system

Abstract

A method for adjusting a radio frequency unit, and a communication apparatus and a communication system. The method comprises: sending first information to a terminal, wherein the first information is used for instructing the terminal to measure a reference signal sent by a radio frequency unit to be adjusted; receiving from the terminal a measurement result for the reference signal sent by said radio frequency unit; and on the basis of the measurement result, adjusting said radio frequency unit. In the method, individual adjustment of each radio frequency unit on the basis of the granularity of the radio frequency unit can achieve fine-grained and precise management of the radio frequency unit.

Description

Method for adjusting radio frequency unit, communication device and communication system

[0001] Cross-reference to Related Applications

[0002] This application claims priority to the Chinese patent application No. 202411391402.9, filed on September 30, 2024, and entitled "Method for adjusting radio frequency unit, communication device and communication system", the content of which is incorporated herein by reference in its entirety. TECHNICAL FIELD

[0003] The present application relates to the field of communication technology, and in particular, to a method for adjusting a radio frequency unit, a communication device and a communication system. BACKGROUND

[0004] There are two forms of current communication systems: one is a distributed base station composed of one baseband unit (BBU) and multiple radio units (RU), which are independent of each other and can be deployed in different geographical locations. The distributed base station can use distributed multiple input and multiple output (D-MIMO) technology. The other is a large-scale antenna array centralized base station composed of one baseband unit and multiple radio units, which are spliced into a large-scale antenna array.

[0005] The radio frequency modules of the above two base stations are composed of multiple different radio units. There may be some differences between different radio units, such as different clock sources of different radio units, or different radio units between the same clock source after the environment, hardware, and connection, resulting in inconsistent frequency offset of the final output signal between the radio units, affecting the system performance.

[0006] In the scenario of multiple radio units, how to achieve fine and accurate management of the radio units needs to be solved. SUMMARY

[0007] Embodiments of the present application provide a method for adjusting a radio frequency unit, a communication device and a communication system to achieve fine and accurate management of the radio frequency unit.

[0008] In a first aspect, an embodiment of the present application provides a method for adjusting a radio frequency unit. The method can be applied to a network side, such as an access network device of the network side, a module (such as a circuit, a chip, or a chip system, etc.) in the access network device, or a logic node, a logic module, or software capable of realizing all or part of the functions of the access network device. For example, the access network device can be a baseband unit or the like. The method comprises: sending first information to a terminal, the first information being used to instruct the terminal to measure a reference signal sent by a radio frequency unit to be adjusted; receiving a measurement result of the reference signal sent by the radio frequency unit to be adjusted from the terminal; and adjusting the radio frequency unit to be adjusted according to the measurement result.

[0009] Based on the above scheme, the radio frequency units are adjusted separately based on the granularity of the radio frequency units, so that the radio frequency units can be accurately managed in detail.

[0010] In a possible implementation method, the radio frequency unit to be adjusted comprises at least one radio frequency unit, and the adjusting the radio frequency unit to be adjusted according to the measurement result comprises: identifying an abnormal radio frequency unit in the at least one radio frequency unit according to the measurement result.

[0011] In a possible implementation method, after identifying the abnormal radio frequency unit in the at least one radio frequency unit according to the measurement result, the abnormal radio frequency unit can be turned off.

[0012] Based on the above scheme, the abnormal radio frequency unit is turned off to reduce the interference of the abnormal radio frequency unit on other radio frequency units, so as to guarantee the communication quality.

[0013] In a possible implementation method, the radio frequency unit to be adjusted comprises at least two radio frequency units, and the adjusting the radio frequency unit to be adjusted according to the measurement result comprises: adjusting the clock of the at least two radio frequency units according to the measurement result.

[0014] Based on the above scheme, the clock of the at least two radio frequency units is adjusted, so that the clock of the at least two radio frequency units is kept aligned, and then the signals sent by the at least two radio frequency units can be aligned, so as to improve the performance of the communication system.

[0015] In a possible implementation method, the radio frequency unit to be adjusted comprises at least two radio frequency units, and the adjusting the radio frequency unit to be adjusted according to the measurement result comprises: adjusting the transmission signal of the at least two radio frequency units according to the measurement result.

[0016] In a possible implementation, the adjusting the transmission signals of the at least two radio frequency units according to the measurement result comprises: adjusting a time delay and / or a frequency offset of the transmission signals of the at least two radio frequency units according to the measurement result.

[0017] Based on the foregoing scheme, the time delay and / or the frequency offset of the transmission signals of the at least two radio frequency units are adjusted to align the signals transmitted by different radio frequency units, which can improve the performance of the communication system.

[0018] In a possible implementation, the first information comprises one or more of the following: the number of the radio frequency units to be adjusted; information about resources used by the radio frequency units to be adjusted to carry reference signals, the resources comprising at least one of a time domain resource, a frequency domain resource, or a space domain resource; or period information about the reference signals transmitted by the radio frequency units to be adjusted.

[0019] Based on the foregoing scheme, the first information is used to instruct the terminal to measure the reference signals transmitted by the corresponding radio frequency units on the corresponding resources, which facilitates accurate measurement of the reference signals transmitted by the radio frequency units.

[0020] In a possible implementation, the measurement result comprises one or more of a frequency offset, a time delay, or a signal to noise ratio (SNR).

[0021] In a possible implementation, the method further comprises: transmitting, by the radio frequency units to be adjusted, reference signals on resources corresponding to the radio frequency units to be adjusted.

[0022] Based on the foregoing scheme, the reference signals are transmitted by different radio frequency units on corresponding resources, which facilitates accurate transmission of the reference signals and, in turn, accurate measurement of the reference signals transmitted by the radio frequency units by the terminal.

[0023] In a possible implementation, the radio frequency units to be adjusted comprise a first radio frequency unit, and resources corresponding to the first radio frequency unit comprise at least one group of resources, different resources in a same group of the at least one group of resources being the same in time domain and different in frequency domain.

[0024] Based on the foregoing scheme, multiple frequency domain resources are configured for each radio frequency unit, which facilitates multiple transmission of the reference signals and, in turn, accurate measurement of the reference signals transmitted by the radio frequency units by the terminal.

[0025] In a possible implementation, the resources corresponding to the first radio frequency unit comprise at least two groups of resources, different groups of the at least two groups of resources being different in time domain.

[0026] Based on the above scheme, by configuring multiple time domain resources for each radio frequency unit, multiple transmissions of the reference signal can be realized, thereby facilitating accurate measurement of the reference signal transmitted by the radio frequency unit by the terminal.

[0027] In a possible implementation, the at least two groups of resources periodically occur.

[0028] Based on the above scheme, by configuring periodically occurring resources for each radio frequency unit, multiple transmissions of the reference signal can be realized, thereby facilitating accurate measurement of the reference signal transmitted by the radio frequency unit by the terminal.

[0029] In a second aspect, an embodiment of the present application provides a method for adjusting a radio frequency unit, which can be applied to a terminal side, for example, a terminal or a communication module in the terminal, or a circuit or chip responsible for communication functions in the terminal (such as a modem chip, also known as a baseband chip, or a system on chip (SoC) chip or a system in package (SIP) chip containing a modem core). The method comprises: receiving first information from an access network device, the first information being used to instruct the terminal to measure a reference signal transmitted by a radio frequency unit to be adjusted; and sending, to the access network device, a measurement result of the reference signal transmitted by the radio frequency unit to be adjusted, the measurement result being used to adjust the radio frequency unit to be adjusted.

[0030] Based on the above scheme, based on the radio frequency unit granularity, each radio frequency unit is adjusted individually, thereby realizing fine and accurate management of the radio frequency unit.

[0031] In a possible implementation, the first information comprises one or more of the following information: a number of the radio frequency units to be adjusted; information of resources used to carry the reference signal of the radio frequency unit to be adjusted, the resources comprising at least one of a time domain resource, a frequency domain resource, or a space domain resource; or, periodic information of the reference signal transmitted by the radio frequency unit to be adjusted.

[0032] Based on the above scheme, by the first information, the terminal is instructed to measure the reference signal transmitted by the corresponding radio frequency unit on the corresponding resource, thereby facilitating accurate measurement of the reference signal transmitted by the radio frequency unit.

[0033] In a possible implementation, the measurement result comprises one or more of a frequency deviation, a time delay, or a signal noise ratio value.

[0034] In a possible implementation, the method further comprises: measuring the reference signal transmitted by the radio frequency unit to be adjusted on the corresponding resource to obtain the measurement result.

[0035] In a possible implementation, the to-be-adjusted radio frequency unit includes a first radio frequency unit, and the resource corresponding to the first radio frequency unit includes at least one group of resources, and different resources in a same group of resources in the at least one group of resources are the same in time domain and different in frequency domain.

[0036] Based on the foregoing scheme, by configuring multiple frequency domain resources for each radio frequency unit, multiple times of sending of the reference signal can be implemented, thereby facilitating accurate measurement of the reference signal sent by the radio frequency unit by the terminal.

[0037] In a possible implementation, the resource corresponding to the first radio frequency unit includes at least two groups of resources, and different groups of resources in the at least two groups of resources are different in time domain.

[0038] Based on the foregoing scheme, by configuring multiple time domain resources for each radio frequency unit, multiple times of sending of the reference signal can be implemented, thereby facilitating accurate measurement of the reference signal sent by the radio frequency unit by the terminal.

[0039] In a possible implementation, the at least two groups of resources periodically appear.

[0040] Based on the foregoing scheme, by configuring resources that periodically appear for each radio frequency unit, multiple times of sending of the reference signal can be implemented, thereby facilitating accurate measurement of the reference signal sent by the radio frequency unit by the terminal.

[0041] In a third aspect, a communication apparatus is provided, which has the functions of the first aspect, for example, the communication apparatus includes modules, units or means corresponding to the operations of the first aspect, which are specifically implemented by software, or by hardware, or by a combination of software and hardware.

[0042] In a fourth aspect, a communication apparatus is provided, which has the functions of the second aspect, for example, the communication apparatus includes modules, units or means corresponding to the operations of the second aspect, which are specifically implemented by software, or by hardware, or by a combination of software and hardware.

[0043] In a fifth aspect, the present application provides a communication apparatus, which comprises an interface circuit and one or more processors. The one or more processors are coupled to a memory. The memory is configured to store part or all of the computer programs or instructions necessary for implementing the functions of the first aspect. The one or more processors can execute the computer programs or instructions, which, when executed, cause the communication apparatus to implement the method in any possible design or implementation manner of the first aspect. The interface circuit is configured to implement the communication function within the communication apparatus and / or the communication function of the communication apparatus with other apparatuses or components.

[0044] The communication apparatus can be an access network device, a module (e.g., a circuit, a chip or a chip system, etc.) in the access network device, or a logic node, a logic module or software capable of implementing all or part of the functions of the access network device. For example, the access network device can be a baseband unit or the like.

[0045] In a sixth aspect, the present application provides a communication apparatus, which comprises an interface circuit and one or more processors. The one or more processors are coupled to a memory. The memory is configured to store part or all of the computer programs or instructions necessary for implementing the functions of the second aspect. The one or more processors can execute the computer programs or instructions, which, when executed, cause the communication apparatus to implement the method in any possible design or implementation manner of the second aspect. The interface circuit is configured to implement the communication function within the communication apparatus and / or the communication function of the communication apparatus with other apparatuses or components.

[0046] In a possible design, the processor is configured to communicate with other apparatuses or components via the interface circuit.

[0047] In a possible design, the communication apparatus can further comprise the memory.

[0048] The communication apparatus can be a terminal, a communication module in the terminal, or a chip (e.g., a modem chip, also known as a baseband chip) or an SoC or SIP chip containing a modem module in the terminal responsible for the communication function.

[0049] In a seventh aspect, the present application provides a chip (or a chip system), which comprises a processor configured to implement any possible implementation method of the first aspect to the second aspect.

[0050] In an eighth aspect, the present application provides a computer-readable storage medium, which stores computer programs or instructions, which, when executed, implement the method in any possible design of the first aspect to the second aspect.

[0051] In a ninth aspect, the present application provides a computer program product, which includes a computer program or instructions, when the computer program or instructions are executed, the method in any possible design of the first aspect to the second aspect is implemented.

[0052] In a tenth aspect, the present application provides a communication system, which includes a baseband unit for performing the method in any possible design of the first aspect, and at least one radio frequency unit; the at least one radio frequency unit is configured to transmit a reference signal. BRIEF DESCRIPTION OF DRAWINGS

[0053] FIG. 1 is a possible, non-limiting system diagram;

[0054] FIG. 2 is a flow diagram of a method for adjusting a radio frequency unit according to an embodiment of the present application;

[0055] FIG. 3(a) is an example diagram of an antenna array clock distribution scheme;

[0056] FIG. 3(b) is an example diagram of resources of a radio frequency unit according to an embodiment of the present application;

[0057] FIG. 4 is a possible example block diagram of a communication device according to an embodiment of the present application;

[0058] FIG. 5 is a structure diagram of a terminal according to an embodiment of the present application. DETAILED DESCRIPTION

[0059] FIG. 1 is a possible, non-limiting system diagram. As shown in FIG. 1, a communication system 10 includes a radio access network (RAN) 100 and a core network (CN) 200. Optionally, the communication system further includes an Internet 300. The RAN 100 includes at least one RAN node (e.g., 110a and 110b in FIG. 1, collectively referred to as 110) and at least one terminal (e.g., 120a-120j in FIG. 1, collectively referred to as 120). The RAN 100 can further include other RAN nodes, such as wireless relay devices and / or wireless backhaul devices (not shown in FIG. 1), etc. The terminal 120 is connected to the RAN node 110 in a wireless manner. The RAN node 110 is connected to the core network 200 in a wireless or wired manner. The core network device in the core network 200 and the RAN node 110 in the RAN 100 can be different physical devices respectively, or can be the same physical device integrated with the logical functions of the core network and the logical functions of the radio access network.

[0060] The RAN 100 can be a 3rd generation partnership project (3GPP) -related cellular system, e.g., a 4th generation (4G), a 5th generation (5G) mobile communication system, or a future-oriented evolved system. The RAN 100 can also be an open radio access network (O-RAN or ORAN), a cloud radio access network (CRAN), or a wireless fidelity (WiFi) system. The RAN 100 can also be a communication system that combines two or more of the above systems.

[0061] The RAN nodes 110, which can also be referred to as access network devices, RAN entities, or access nodes, etc., form part of the communication system 10 and are configured to facilitate wireless access to the communication system. The RAN nodes 110 in the communication system 10 can be of the same type or of different types. In some scenarios, the roles of the RAN nodes 110 and the terminals 120 are relative, e.g., the network element 120i in Figure 1 can be a helicopter or a drone, which can be configured to be a mobile base station, for a terminal 120j that accesses the RAN 100 through the network element 120i, the network element 120i is a base station; but for the base station 110a, the network element 120i is a terminal. The RAN nodes 110 and the terminals 120 are sometimes referred to as communication apparatuses, e.g., the network elements 110a and 110b in Figure 1 can be understood as communication apparatuses with base station functions, and the network elements 120a-120j can be understood as communication apparatuses with terminal functions.

[0062] In a possible scenario, the RAN node can be a base station, an evolved NodeB (eNodeB), an access point (AP), a transmission reception point (TRP), a next generation NodeB (gNB), a base station in a future mobile communication system, or an access node in a WiFi system, etc. The RAN node can be a macro base station (such as 110a in FIG. 1), a micro base station or an indoor station (such as 110b in FIG. 1), a relay node or a donor node, or a wireless controller in a CRAN scenario. Optionally, the RAN node can also be a server, a wearable device, a vehicle or a vehicle-mounted device, etc. For example, the access network device in vehicle to everything (V2X) technology can be a road side unit (RSU). All or part of the functions of the RAN node in the present application can also be implemented by software functions running on hardware, or by virtualized functions instantiated on a platform (such as a cloud platform). The RAN node can also be provided with a communication module, circuit or chip for performing corresponding communication functions, and program instructions for performing corresponding communication functions. The RAN node in the present application can also be a logical node, a logical module or software that can implement all or part of the functions of the RAN node.

[0063] In another possible scenario, multiple RAN nodes cooperate to assist a terminal to implement wireless access, and different RAN nodes respectively implement part of the functions of a base station. For example, the RAN node can be a central unit (CU), a distributed unit (DU), a CU-control plane (CP), a CU-user plane (UP), or an RU, etc. The CU and the DU can be separately arranged, or can be included in the same network element (such as a BBU). The RU can be included in a radio frequency device, such as a remote radio unit (RRU), an active antenna processing unit (AAU), or a remote radio head (RRH).

[0064] In different systems, the CU (or CU-CP and CU-UP), DU or RU can also have different names, but those skilled in the art can understand their meanings. For example, in the ORAN system, the CU can also be referred to as O-CU (open CU), the DU can also be referred to as O-DU, the CU-CP can also be referred to as O-CU-CP, the CU-UP can also be referred to as O-CU-UP, and the RU can also be referred to as O-RU. For the convenience of description, the CU, CU-CP, CU-UP, DU and RU are taken as examples for description in this application. Any one of the CU (or CU-CP, CU-UP), DU and RU in this application can be implemented by a software module, a hardware module, or a combination of a software module and a hardware module.

[0065] A terminal can access the above communication system and has corresponding communication functions. The terminal can also be referred to as a terminal device, a user equipment (UE), a mobile station, a mobile terminal, etc. The terminal can be widely used in various scenarios, such as device-to-device (D2D) communication, vehicle-to-everything (V2X) communication, machine-type communication (MTC), internet of things (IOT), virtual reality, augmented reality, industrial control, autonomous driving, remote medical treatment, smart power grid, smart furniture, smart office, smart wear, smart transportation, smart city, etc. The terminal can be a mobile phone, a tablet computer, a computer with wireless transceiver function, a wearable device, a vehicle, a drone, a helicopter, an airplane, a ship, a robot, a mechanical arm, a smart home device, a transport vehicle with wireless communication function, a communication module, etc. Embodiments of the present application do not limit the device form of the terminal. The terminal is usually provided with a communication module, circuit or chip for executing corresponding communication functions. The terminal is also configured with program instructions for executing corresponding communication functions.

[0066] The current communication system has the following two forms: one is a distributed base station composed of one baseband unit and multiple radio frequency units, which are independent of each other and can be deployed in different geographical locations. Among them, the distributed base station can use D-MIMO technology. The other is a large-scale antenna array centralized base station composed of one baseband unit and multiple radio frequency units, and the multiple radio frequency units are spliced into a large-scale antenna array.

[0067] The radio frequency modules of the above two base stations are composed of multiple different radio frequency units. There can be some differences between different radio frequency units, such as different clock sources of different radio frequency units, or different clock sources of different radio frequency units after being affected by the environment, hardware, and connection, resulting in inconsistent frequency offsets of the final output signals between the radio frequency units, affecting the system performance.

[0068] In the scenario where multiple radio frequency units exist, how to achieve fine and accurate management of the radio frequency units needs to be solved.

[0069] To solve the above problems, the present application provides corresponding solutions.

[0070] The method and device for adjusting the radio frequency unit will be introduced below in combination with the drawings. It can be understood that the access network device, the radio frequency unit, and the terminal are taken as an example of the execution subject of the interaction in the present application, but the present application does not limit the execution subject of the interaction. For example, the method executed by the access network device in the present application can also be implemented by a module (such as a circuit, a chip, or a chip system, etc.) in the access network device, or a logical node, a logical module, or software capable of implementing all or part of the functions of the access network device. The method executed by the radio frequency unit in the present application can also be implemented by a module (such as a circuit, a chip, or a chip system, etc.) in the radio frequency unit, or a logical node, a logical module, or software capable of implementing all or part of the functions of the radio frequency unit. The method executed by the terminal in the present application can also be implemented by a communication module in the terminal or a circuit or chip (such as a modem chip (also known as a baseband chip), or a SoC chip containing a modem core, or a SIP chip) responsible for communication functions in the terminal.

[0071] FIG. 2 is a flowchart of a method for adjusting a radio frequency unit according to an embodiment of the present application. The method includes the following steps:

[0072] Step 201: The access network device sends first information to the terminal. Correspondingly, the terminal receives the first information.

[0073] The access network device sends the first information to the terminal, such as the baseband unit in the access network device sending the first information to the terminal.

[0074] The first information is used to instruct the terminal to measure the reference signal sent by the radio frequency unit to be adjusted.

[0075] The first information can be control information or control signaling, such as downlink control information (DCI) and the like.

[0076] Exemplarily, the first information includes one or more of the following information (1) to (4):

[0077] (1) indication information for indicating whether to measure the reference signal transmitted by the to-be-adjusted radio frequency unit.

[0078] (2) the number of to-be-adjusted radio frequency units. The to-be-adjusted radio frequency unit can be part or all of the radio frequency units connected to the baseband unit. For example, if the baseband unit is connected to 64 radio frequency units, the number of to-be-adjusted radio frequency units can be any one of 1-64.

[0079] (3) information of resources for carrying reference signals of the to-be-adjusted radio frequency unit, the resources including at least one of time domain resources, frequency domain resources or space domain resources, wherein the space domain resources include antenna resources. That is, it is indicated that each to-be-adjusted radio frequency unit transmits reference signals on which resource. For example, radio frequency unit #1 transmits reference signals on resource #1, and radio frequency unit #2 transmits reference signals on resource #2. It should be noted that each radio frequency unit can transmit reference signals on part or all of the antennas owned by the radio frequency unit.

[0080] (4) periodic information of the reference signals transmitted by the to-be-adjusted radio frequency unit. The periodic information is used to indicate whether each to-be-adjusted radio frequency unit transmits reference signals periodically. If the reference signals are transmitted periodically, the periodic information can also indicate the period size, such as 40 milliseconds (ms).

[0081] Optionally, the access network device also transmits reference signals on the resources corresponding to the to-be-adjusted radio frequency units through the to-be-adjusted radio frequency units. For example, reference signals are transmitted on resource #1 through radio frequency unit #1, reference signals are transmitted on resource #2 through radio frequency unit #2, and so on.

[0082] Exemplarily, the to-be-adjusted radio frequency unit includes a first radio frequency unit, which is any radio frequency unit in the to-be-adjusted radio frequency unit. The resource corresponding to the first radio frequency unit includes at least one group of resources, and different resources in the same group of resources in the at least one group of resources are the same in time domain and different in frequency domain. If the resource corresponding to the first radio frequency unit includes at least two groups of resources, different resources in the same group of resources in the at least two groups of resources are the same in time domain and different in frequency domain, and different groups of resources in the at least two groups of resources are different in time domain. Moreover, the at least two groups of resources can appear periodically or can not appear periodically.

[0083] For example, it is assumed that the baseband unit is connected to N radio frequency units, and the N radio frequency units are all to-be-adjusted radio frequency units, and N is a positive integer. The N radio frequency units are denoted as RU#0, RU#1, RU#2, …, RU#N-1 respectively. For RU#i (i=0, 1, 2, …, 63), the baseband unit allocates m igroup resource, wherein m i is a positive integer. The m i different resources in the same group resource have the same time domain and different frequency domains, the m i different group resources have different time domains. Assuming that the interval of the frequency domain resource of RU#i is λ i and the offset is Δ i , the frequency domain resource of RU#i can be expressed as k i = λ i n + Δ i , n = 0, 1, ….

[0084] The following will be described in combination with a specific example.

[0085] Referring to FIG. 3(a), it is an example diagram of an antenna array clock distribution scheme. In this example, 64 radio frequency units form an antenna array, wherein each radio frequency unit can be a radio frequency board. The clock of radio frequency unit 0 to radio frequency unit 31 in the 64 radio frequency units comes from a master clock, the clock of radio frequency unit 32 to radio frequency unit 63 in the 64 radio frequency units comes from a slave clock, and the input of the slave clock comes from the master clock. However, when the clock signal of the master clock passes through the hardware of the slave clock, a deviation can be generated. Moreover, the clock signal of the master clock is distributed to 32 radio frequency units, i.e., radio frequency unit 0 to radio frequency unit 31, by a clock distribution board of 1 / 32, and the clock signal of the slave clock is sent to 32 radio frequency units, i.e., radio frequency unit 32 to radio frequency unit 63, by another clock distribution board of 1 / 32. Due to the hardware difference of different clock distribution boards, the output signals of different radio frequency units can also be inconsistent in clock.

[0086] Based on the above example, the following introduces a resource allocation manner of a radio frequency unit. Referring to FIG. 3(b), it is an example diagram of the resource of a radio frequency unit. Assuming that a baseband unit is connected to 64 radio frequency units, i.e., N = 64 in the foregoing, and the 64 radio frequency units are RU#0, RU#1, RU#2, …, RU#63 respectively. Each small square in FIG. 3(b) represents a resource element (RE), and each RE occupies a symbol length in the time domain, and each 12 REs form a resource block (RB). Each radio frequency unit is allocated two groups of resources, i.e., m i = 2. The frequency domain comb granularity is 12 REs, and the position p[time domain, frequency domain] of the resource of the reference signal sent by RU#i can be expressed as:

[0087] wherein is the first group of resources of RU#i, is a second set of resources of RU#i, idx rb is an index of resource block, and idx rb equals 0, 1, 2, …, mod represents a modulo operation.

[0088] And the above resources can be periodic, for example, the period is 40ms, then every 40ms, the 64 radio frequency units are allocated corresponding resources, and the position of the allocated resources is shown in Figure 3(b).

[0089] It should be noted that the resources corresponding to each radio frequency unit for transmitting reference signals are relatively independently configured, and it is not required that the resources corresponding to different radio frequency units follow a certain specific rule, and can be configured according to actual needs.

[0090] Step 202, the terminal sends the measurement result of the reference signal transmitted by the radio frequency unit to be adjusted to the access network device. Correspondingly, the access network device receives the measurement result.

[0091] The terminal sends the measurement result of the reference signal transmitted by the radio frequency unit to be adjusted to the access network device, for example, the terminal sends the measurement result of the reference signal transmitted by the radio frequency unit to be adjusted to the baseband unit in the access network device.

[0092] The terminal measures the reference signal transmitted by the radio frequency unit to be adjusted on the corresponding resource according to the received first information to obtain a measurement result. The measurement result is of radio frequency unit granularity, that is, there is a corresponding measurement result for each radio frequency unit to be adjusted.

[0093] The measurement result includes but is not limited to one or more of frequency offset (abbreviated as frequency offset), time delay or signal noise ratio.

[0094] As an implementation method, the frequency offset in the measurement result refers to the frequency offset between the terminal and each radio frequency unit to be adjusted.

[0095] As another implementation method, one of the radio frequency units to be adjusted can be pre-agreed or configured as a reference radio frequency unit, and the frequency offset in the measurement result refers to the frequency offset difference between the radio frequency unit to be adjusted and the reference radio frequency unit. For example, the radio frequency units to be adjusted include RU#0, RU#1, RU#2 and RU#3, and RU#0 is the reference radio frequency unit, then the frequency offset difference reported by the terminal includes the frequency offset difference between RU#1 and RU#0, the frequency offset difference between RU#2 and RU#0 and the frequency offset difference between RU#3 and RU#0. Wherein, the frequency offset difference between RU#i and RU#0 is equal to the frequency offset between the terminal and RU#i minus the frequency offset between the terminal and RU#0, i=1, 2, 3.

[0096] As an implementation method, the time delay in the measurement result refers to the time delay between the terminal and each to-be-adjusted radio frequency unit.

[0097] As another implementation method, one of the to-be-adjusted radio frequency units can also be agreed or configured in advance as a reference radio frequency unit, and the time delay in the measurement result refers to the time delay difference between the to-be-adjusted radio frequency unit and the reference radio frequency unit. For example, the to-be-adjusted radio frequency units include RU#0, RU#1, RU#2 and RU#3, and RU#0 is the reference radio frequency unit, and the time delay difference reported by the terminal includes the time delay difference between RU#1 and RU#0, the time delay difference between RU#2 and RU#0, and the time delay difference between RU#3 and RU#0. Wherein, the time delay difference between RU#i and RU#0 is equal to the time delay between the terminal and RU#i minus the time delay between the terminal and RU#0, i=1, 2, 3.

[0098] As an implementation method, the signal-to-noise ratio in the measurement result refers to the signal-to-noise ratio between the terminal and each to-be-adjusted radio frequency unit.

[0099] As another implementation method, one of the to-be-adjusted radio frequency units can also be agreed or configured in advance as a reference radio frequency unit, and the signal-to-noise ratio in the measurement result refers to the signal-to-noise ratio difference between the to-be-adjusted radio frequency unit and the reference radio frequency unit. For example, the to-be-adjusted radio frequency units include RU#0, RU#1, RU#2 and RU#3, and RU#0 is the reference radio frequency unit, and the signal-to-noise ratio difference reported by the terminal includes the signal-to-noise ratio difference between RU#1 and RU#0, the signal-to-noise ratio difference between RU#2 and RU#0, and the signal-to-noise ratio difference between RU#3 and RU#0. Wherein, the signal-to-noise ratio difference between RU#i and RU#0 is equal to the signal-to-noise ratio between the terminal and RU#i minus the signal-to-noise ratio between the terminal and RU#0, i=1, 2, 3.

[0100] Step 203, the access network device adjusts the to-be-adjusted radio frequency unit according to the measurement result.

[0101] The application does not limit the specific implementation method of the access network device adjusting the radio frequency unit according to the measurement result, and the corresponding adjustment can be made according to the actual needs. And the access network device adjusts each radio frequency unit based on the radio frequency unit granularity, which can realize the fine and accurate management of the radio frequency unit.

[0102] Exemplarily, some application scenarios of the adjustment method are given below.

[0103] Application scenario one, identifying abnormal radio frequency units.

[0104] The radio frequency unit connected with the baseband unit includes at least one radio frequency unit. When one or more radio frequency units fail due to some reasons, the access network device can discover that the measurement result of the one or more radio frequency units is too different from the measurement result of other radio frequency units based on the measurement result, and identify the one or more radio frequency units as abnormal radio frequency units. Optionally, the abnormal radio frequency units can be processed accordingly, such as turning off the power supply of the abnormal radio frequency units to reduce the interference of the abnormal radio frequency units to other radio frequency units, so as to protect the communication quality.

[0105] Application scenario two, aligning signals sent by multiple radio frequency units.

[0106] The radio frequency unit connected with the baseband unit includes at least two radio frequency units. Different radio frequency units can be inconsistent in clock due to some reasons, and further cause the signal time delay, frequency deviation, etc. of different radio frequency units to be inconsistent, so that the signals sent by different radio frequency units cannot be aligned, and the performance of the communication system is affected. For example, different radio frequency units receive clock synchronization signals from the same baseband unit through different optical fibers, and the length and quality of the optical fibers are different, so that the clock synchronization signals received by different radio frequency units are deviated, and further cause the clock of different radio frequency units to be inconsistent. For another example, different radio frequency units can receive clock synchronization signals from different clock sources of the same baseband unit, which can also cause the clock of different radio frequency units to be inconsistent. For another example, the clock synchronization signals received by different radio frequency units are consistent, but due to the hardware difference between different radio frequency units (for example, different radio frequency units come from different manufacturers), the clock of different radio frequency units can also be inconsistent over time.

[0107] In the case that the clock of different radio frequency units is inconsistent, in order to align the signals sent by different radio frequency units to improve the performance of the communication system, the access network device can adjust the clock of the at least two radio frequency units according to the measurement result, so that the clock of the at least two radio frequency units is kept aligned, and further the signals sent by the at least two radio frequency units can be aligned.

[0108] In the case that the clock of different radio frequency units is inconsistent, in order to align the signals sent by different radio frequency units to improve the performance of the communication system, the access network device can also adjust the time delay and / or frequency deviation of the signals sent by the at least two radio frequency units according to the measurement result. That is, the access network device instructs the at least two radio frequency units to perform corresponding time delay compensation and / or frequency compensation when sending signals based on the measurement result, so as to align the signals sent by different radio frequency units.

[0109] Application scenario three, adjusting terminals served by multiple radio frequency units.

[0110] The radio frequency units connected to the baseband unit include at least two radio frequency units, and the capabilities of different radio frequency units can not be completely the same. In order to better serve the terminal, the terminal served by each radio frequency unit can be adjusted according to information (for example, a signal-to-noise ratio) in the measurement result. For example, for a radio frequency unit with a large signal-to-noise ratio (for example, greater than a certain threshold), a terminal with high throughput demand or low latency demand can be served, and for a radio frequency unit with a small signal-to-noise ratio (for example, less than a certain threshold), a terminal without high throughput demand or low latency demand can be served.

[0111] FIG. 4 shows a possible exemplary block diagram of a communication apparatus involved in the embodiments of the present application. As shown in FIG. 4, the communication apparatus 400 can include modules or units for implementing the above-mentioned method embodiments. In one possible design, the communication apparatus 400 includes a processing unit 402 and a communication unit 403. Optionally, the communication apparatus 400 can further include a storage unit 401 for storing apparatus program code and / or data.

[0112] The communication apparatus 400 can also be a network side apparatus in the above-mentioned embodiments, for example, an access network device on the network side, a module (such as a circuit, a chip or a chip system, etc.) in the access network device, or a logic node, a logic module or software capable of implementing all or part of the functions of the access network device.

[0113] For example, in one embodiment, the communication unit 403 is configured to send first information to a terminal, where the first information is used to instruct the terminal to measure a reference signal sent by a radio frequency unit to be adjusted; and receive a measurement result of the reference signal sent by the radio frequency unit to be adjusted from the terminal; and the processing unit 402 is configured to adjust the radio frequency unit to be adjusted according to the measurement result.

[0114] In one possible implementation method, the radio frequency unit to be adjusted includes at least one radio frequency unit; and the processing unit 402 is configured to adjust the radio frequency unit to be adjusted according to the measurement result, including: identifying an abnormal radio frequency unit in the at least one radio frequency unit according to the measurement result.

[0115] In one possible implementation method, the radio frequency unit to be adjusted includes at least two radio frequency units; and the processing unit 402 is configured to adjust the radio frequency unit to be adjusted according to the measurement result, including: adjusting a clock of the at least two radio frequency units according to the measurement result.

[0116] In a possible implementation, the to-be-adjusted radio frequency unit includes at least two radio frequency units; and the processing unit 402 is configured to adjust, according to the measurement result, a transmission signal of the at least two radio frequency units.

[0117] In a possible implementation, the processing unit 402 is configured to adjust, according to the measurement result, a time delay and / or a frequency offset of the transmission signal of the at least two radio frequency units.

[0118] In a possible implementation, the first information includes one or more of the following: a quantity of the to-be-adjusted radio frequency unit; information about a resource of the to-be-adjusted radio frequency unit for carrying a reference signal, the resource including at least one of a time domain resource, a frequency domain resource, or a space domain resource; or periodic information about the reference signal transmitted by the to-be-adjusted radio frequency unit.

[0119] In a possible implementation, the measurement result includes one or more of a frequency offset, a time delay, or a signal-to-noise ratio.

[0120] In a possible implementation, the communication unit 403 is further configured to transmit, by the to-be-adjusted radio frequency unit, a reference signal on a resource corresponding to the to-be-adjusted radio frequency unit.

[0121] In a possible implementation, the to-be-adjusted radio frequency unit includes a first radio frequency unit, and a resource corresponding to the first radio frequency unit includes at least one group of resources, different resources in a same group of resources in the at least one group of resources being the same in a time domain and different in a frequency domain.

[0122] In a possible implementation, the resource corresponding to the first radio frequency unit includes at least two groups of resources, different groups of resources in the at least two groups of resources being different in the time domain.

[0123] In a possible implementation, the at least two groups of resources periodically occur.

[0124] The communication apparatus 400 can be a terminal-side apparatus in the above-described embodiments, for example, a terminal or a communication module in the terminal, or a circuit or a chip responsible for a communication function in the terminal.

[0125] For example, in an embodiment, the processing unit 402 is configured to receive, by the communication unit 403, first information from an access network device, the first information being used to instruct the terminal to measure a reference signal transmitted by a to-be-adjusted radio frequency unit; and transmit, to the access network device, a measurement result of the reference signal transmitted by the to-be-adjusted radio frequency unit, the measurement result being used to adjust the to-be-adjusted radio frequency unit.

[0126] In a possible implementation, the first information includes one or more of the following: a quantity of the radio frequency units to be adjusted; information of resources of the radio frequency units to be adjusted for carrying reference signals, the resources including at least one of a time domain resource, a frequency domain resource, or a space domain resource; or periodic information of the radio frequency units to be adjusted for sending reference signals.

[0127] In a possible implementation, the measurement result includes one or more of a frequency offset, a time delay, or a signal noise ratio.

[0128] In a possible implementation, the processing unit 402 is further configured to measure reference signals sent by the radio frequency units to be adjusted on corresponding resources, to obtain the measurement result.

[0129] In a possible implementation, the radio frequency units to be adjusted include a first radio frequency unit, and the corresponding resources of the first radio frequency unit include at least one group of resources, different resources in a same group of resources in the at least one group of resources being the same in a time domain and different in a frequency domain.

[0130] In a possible implementation, the corresponding resources of the first radio frequency unit include at least two groups of resources, different groups of resources in the at least two groups of resources being different in a time domain.

[0131] In a possible implementation, the at least two groups of resources periodically occur.

[0132] In a possible design, when the communication apparatus 400 is a terminal or a communication module in a terminal, the function of the processing unit 402 can be implemented by one or more processors. Specifically, the processor can include a modem chip, or a system on chip (SoC) chip or a SIP chip including a modem core. The function of the communication unit 403 can be implemented by a transceiver circuit.

[0133] In a possible design, when the communication apparatus 400 is a circuit or chip responsible for a communication function in a terminal, such as a modem chip or a system on chip (SoC) chip or a SIP chip including a modem core, the function of the processing unit 402 can be implemented by a circuit system including one or more processors or processor cores in the chip. The function of the communication unit 403 can be implemented by an interface circuit or a data transceiver circuit on the chip.

[0134] It can be understood that the division of units in the above apparatus is only a logical function division, one function can correspond to one functional unit, or two or more functions can be integrated into one functional unit. In actual implementation, all or part of the units can be integrated into one physical entity, or can be distributed in different physical entities. In addition, the above functional units can be realized in the form of hardware, or in the form of software, or in the form of hardware combined with software. Whether a certain function is executed in the form of hardware or software depends on the specific application and design constraints of the technical scheme. Professional technicians can use different methods to implement the described functions for specific applications, but such implementation should not be considered beyond the scope of the present application.

[0135] In one example, the functional units in any of the above apparatuses can be one or more integrated circuits configured to implement the above methods, such as one or more application specific integrated circuits (ASICs), or one or more central processing units (CPUs), one or more microcontroller units (MCUs), one or more digital signal processors (DSPs), or one or more field programmable gate arrays (FPGAs), or a combination of at least two of these integrated circuit forms.

[0136] In one example, the storage unit 401 can include random access memory, flash memory, read only memory, programmable read only memory, electrically erasable programmable memory, and / or registers, etc.

[0137] FIG. 5 is a structural schematic diagram of a terminal 500 provided by an embodiment of the present application. The terminal 500 can correspond to the terminal shown in FIG. 1, and is used to implement the operation of the terminal in the above embodiments. As shown in FIG. 5, the terminal includes one or more antennas 510, a radio frequency processing system 520, and a processor system 530.

[0138] In the downlink or sidelink direction, the radio frequency processing system 520 receives radio frequency signals through the antenna 510, and sends the signals after radio frequency processing to the processor system 530 for further processing. In the uplink or sidelink direction, the processor system 530 performs signal processing on the information at the terminal side, and sends it to the radio frequency processing system 520, which performs radio frequency processing on the signal and transmits it through the antenna 510.

[0139] In one example, the radio frequency processing system 520, as a communication interface for the terminal to communicate with the outside, can include a radio frequency frontend 521 (RFFE) and a radio frequency transceiver 522 (RF transceiver). The RFFE 521 is mainly used for one or more of shaping, passband selection, or gain processing of the RF signals received by the antenna or the RF signals to be sent through the antenna, and can include one or more of radio frequency switches, duplexers, filters, power amplifiers, antenna tuning, and low-noise amplifiers. The RFFE 521 can be a circuit system composed of a plurality of discrete devices, or can be integrated and packaged in one or more chips. The radio frequency transceiver 522 is used to process the RF signals received by the RFFE into baseband / intermediate frequency signals for further processing by the processor system 530, and to process the baseband / intermediate frequency signals provided by the processor system 530 into RF signals for transmission to the RFFE 521. The baseband / intermediate frequency signals transmitted between the radio frequency transceiver 522 and the processor system 530 can be digital signals or analog signals. The radio frequency transceiver 522 can be implemented by one or more chips, which are usually referred to as radio frequency chips (RFIC).

[0140] In one example, the processor system 530 can include one or more processors for processing signals and executing one or more communication protocols. Optionally, the processor system 530 can further include a memory 536. In one example, the one or more processors include at least one baseband processor 531 (also referred to as a modem processor). The memory 536 is used to store data and / or computer program instructions. Optionally, the processor system 530 can further include one or more application processors 532 for implementing processing of the terminal operating system and the application layer. Optionally, the processor system 530 can further include one or more of a voice subsystem 533, a multimedia subsystem 534, or an interface circuit 535. Among them, the voice subsystem 533 is used to process voice signals, the multimedia subsystem 534 is used to process multimedia related operations such as video encoding and decoding, image processing, etc., and the interface circuit 535 is used to implement communication with other terminal components such as a display 540, an input device 550, a memory 560, etc. The above-mentioned components in the processor system 530 can communicate with each other through a bus or a communication interface circuit.

[0141] In one example, the processor system 530 can be packaged into a processor chip, such as a SoC chip or a SIP chip. In one example, the processor system 530 can be a system composed of multiple chips, for example, the baseband processor 531 therein can be packaged into a chip separately, or packaged into a chip together with part or all of the circuit of the radio frequency processing system.

[0142] In one example, the memory 536 can be an on-chip memory, i.e., located on the chip of the processor system 530. In one example, the memory 560 can be an off-chip memory, i.e., located off the chip of the processor system 530.

[0143] In one example, the baseband processor 531 can include one or more processor cores 5311 and an interface circuit 5314. The one or more processor cores 5311 are configured to process signals and perform one or more communication protocols. Optionally, the baseband processor 531 can further include a memory 5312 configured to store at least part of corresponding computer program instructions and / or data. In one example, the one or more processor cores 5311 implement the above-mentioned operations in the method embodiments by executing the computer program instructions stored in the memory 5312. In the present disclosure, the memory 5312 configured to store corresponding computer program instructions and / or data can mean that the memory 5312 is configured to store all corresponding computer program instructions and / or data for execution by the processor core 5311; or can mean that the memory 5312 is configured to store part of corresponding computer program instructions and / or data, which includes computer program instructions and / or data currently required for execution by the processor core 5311, and the memory 5312 can store different parts of computer program instructions and / or data for execution by the processor core 5311 multiple times to implement the above-mentioned operations in the method embodiments. The interface circuit 5314 is configured as a communication interface to communicate with other components, such as transmitting signals with the radio frequency processing system 520, communicating with other subsystems and related components of the processor system 530 through a bus, such as transmitting data control signals with the application processor 532, and transmitting data or computer program instructions with the memory 536 or the memory 560. Optionally, in order to reduce the load of the processor core, a baseband signal processing circuit 5313 can be further provided to implement at least part of the processing work of the baseband signal, including one or more of demodulation, modulation, encoding or decoding of the signal.

[0144] In one example, the communication apparatus provided in the present application can be the terminal 500, the communication module including the processor system 530 and the radio frequency processing system 520, the processor system 530, or the baseband processor 531.

[0145] The processor, processor system, application processor, baseband processor, processor circuit, or processor core can be collectively referred to as a processor, which can include one or a combination of a central processing unit (CPU), a digital signal processor (DSP), a microprocessor unit (MPU), a microcontroller unit (MCU), a graphics processing unit (GPU), a field programmable gate array (FPGA), an artificial intelligence processor (AI processor), or a neural processing unit (NPU).

[0146] The above-mentioned memory can include one or more of the following storage media: random access memory (RAM), static RAM (SRAM), dynamic RAM (DRAM), phase-change memory (PCM), resistive RAM (ReRAM), magneto resistive RAM (MRAM), ferroelectric RAM (FRAM), cache, register, read-only memory (ROM), flash memory, erasable programmable ROM (EPROM), hard disk, etc. In one example, computer program instructions for implementing the above-embodiments can be stored on a non-volatile memory, such as at least part of the above-mentioned memory 560 (which can be one or more of ROM, flash memory, EPROM, or hard disk). During terminal operation, the corresponding computer program instructions can be partially or entirely loaded onto a memory with faster transmission speed than the processor, such as at least part of the above-mentioned memory 536 and / or memory 5312 (which can be one or more of RAM, SRAM, DRAM, PCM, RERAM, MRAM, FRAM, cache, or register), for execution by the processor to implement the steps in the above-mentioned method embodiments.

[0147] In one example, the radio frequency transceiver 522 and the radio frequency front end 521 can also be packaged in one chip. In one example, the radio frequency transceiver 522, the radio frequency front end 521, and the baseband processor 531 can also be packaged in one chip.

[0148] The terms "system" and "network" in the embodiments of the present application can be used interchangeably. "At least one" means one or more, and "multiple" means two or more. The present application provides a chip (or chip system) including a processor for implementing any of the above-mentioned method embodiments.

[0149] The present application provides a computer-readable storage medium having stored therein computer programs or instructions, which, when executed, implement any of the above-mentioned method embodiments.

[0150] The present application provides a computer program product comprising computer programs or instructions which, when executed, implement any of the method embodiments described above.

[0151] The present application provides a communication system comprising the baseband unit and at least one radio frequency unit in any of the method embodiments described above.

[0152] The method steps in the embodiments of the present application can be implemented by means of hardware, or by means of a processor executing software instructions. The software instructions can be composed of corresponding software modules, which can be stored in a Random Access Memory (RAM), a flash memory, a Read-Only Memory (ROM), a Programmable Read-Only Memory (PROM), an Erasable Programmable Read-Only Memory (EPROM), an Electrically Erasable Programmable Read-Only Memory (EEPROM), a register, a hard disk, a mobile hard disk, a compact disc read-only memory (CD-ROM), or any other form of storage medium well known in the art. An exemplary storage medium is coupled to the processor, such that the processor can read information from, and write information to, the storage medium. Of course, the storage medium can be a component of the processor. The processor and the storage medium can be located in an ASIC. In addition, the ASIC can be located in the first network element or the store-and-forward ground function network element. Of course, the processor and the storage medium can also exist as discrete components in the baseband unit or the terminal.

[0153] In the above embodiments, all or part of the embodiments can be implemented by software, hardware, firmware or any combination thereof. When implemented by software, all or part of the embodiments can be implemented in the form of a computer program product. The computer program product includes one or more computer programs or instructions. The computer program refers to a set of instructions for instructing an electronic computer or other devices with message processing capability to perform each step. The computer program is usually written in a certain programming language and runs on a certain target architecture. When the computer program or instructions are loaded and executed on the computer, all or part of the processes or functions described in the embodiments of the present application are performed. The computer can be a general-purpose computer, a special-purpose computer, a computer network or other programmable devices. The computer program or instructions can be stored in a computer readable storage medium or transferred from one computer readable storage medium to another computer readable storage medium, for example, the computer program or instructions can be transferred from one website, computer, server or data center to another website, computer, server or data center through wired or wireless mode. 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, data center and the like integrated with one or more available media. The available medium can be a magnetic medium, such as a floppy disk, a hard disk, a magnetic tape; or an optical medium, such as a digital video disc; or a semiconductor medium, such as a solid state disk. The computer readable storage medium can be a volatile or non-volatile storage medium, or can include both volatile and non-volatile storage media.

[0154] In various embodiments of the present application, the terms and / or descriptions of different embodiments are consistent and can be referred to each other if there is no special description and logical conflict. The technical features in different embodiments can be combined to form new embodiments according to their inherent logical relationship.

[0155] In the present application, "at least one" means one or more, and "multiple" means two or more. "And / or" describes the association relationship between the associated objects, which means that there can be three kinds of relationships, for example, A and / or B, which can represent the following three cases: A exists alone, A and B exist together, and B exists alone, where A and B can be singular or plural. In the literal description of the present application, the character " / ", generally represents that the front and rear associated objects have an "or" relationship; in the formula of the present application, the character " / ", represents that the front and rear associated objects have a "division" relationship.

[0156] It can be understood that various numerical numbers involved in the embodiments of the present application are only distinguished for convenience of description, and are not used to limit the scope of the embodiments of the present application. The size of the serial numbers of the above processes does not mean the order of execution, and the execution order of the processes should be determined according to their functions and inherent logic.

[0157] The terms "system" and "network" in the embodiments of the present application can be used interchangeably. "At least one" means one or more, and "multiple" means two or more. The "and / or" describes the association relationship of the associated objects, which means that there can be three relationships, for example, A and / or B, which can represent the cases of A alone, A and B together, and B alone, where A and B can be singular or plural. The character " / " generally represents an "or" relationship between the front and rear associated objects. "At least one of the following" or similar expressions means any combination of these items, including any combination of single item or multiple items. For example, "at least one of A, B or C" includes A, B, C, AB, AC, BC or ABC, and "at least one of A, B and C" can also be understood to include A, B, C, AB, AC, BC or ABC. In addition, unless otherwise specified, the ordinal numbers "first", "second" and the like mentioned in the embodiments of the present application are used to distinguish a plurality of objects, and are not used to limit the order, time sequence, priority or importance of the plurality of objects.

[0158] Those skilled in the art should understand that the embodiments of the present application can be provided as a method, a system, or a computer program product. Therefore, the present application can take the form of a complete hardware embodiment, a complete software embodiment, or an embodiment combining software and hardware aspects. Moreover, the present application can take the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to disk storage, optical storage, etc.) containing computer-usable program code.

[0159] The present application is described with reference to flowcharts and / or block diagrams according to the methods, devices (systems), and computer program products of the present application. It should be understood that each flow and / or block in the flowcharts and / or block diagrams, and the combination of flows and / or blocks in the flowcharts and / or block diagrams can be implemented by computer program instructions. These computer program instructions can be provided to the processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing device to produce a machine, so that the instructions executed by the processor of the computer or other programmable data processing device produce a device for implementing the functions specified in one or more flows in the flowcharts and / or one or more blocks in the block diagrams.

[0160] These computer program instructions can also be stored in a computer readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer readable memory produce an article of manufacture including instructions which implement the function specified in the flowchart or flowsheets and / or block or blocks of the block diagrams.

[0161] These computer program instructions can also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart or flowsheets and / or block or blocks of the block diagrams.

[0162] Obviously, numerous modifications and variations of the present application are possible in light of the above teachings. It is therefore to be understood that within the scope of the claims and their equivalents, the application can be practiced otherwise than as specifically described.

Claims

1. A method of adjusting a radio frequency unit, characterized by, Comprising: sending first information to a terminal, the first information being used for instructing the terminal to measure a reference signal transmitted by a to-be-adjusted radio frequency unit; receiving a measurement result of the reference signal transmitted by the to-be-adjusted radio frequency unit from the terminal; adjusting the to-be-adjusted radio frequency unit according to the measurement result.

2. The method of claim 1, wherein, The to-be-adjusted radio frequency unit comprises at least one radio frequency unit. The adjusting the to-be-adjusted radio frequency unit according to the measurement result comprises: identifying an abnormal radio frequency unit in the at least one radio frequency unit according to the measurement result.

3. The method of claim 1, wherein, The to-be-adjusted radio frequency unit comprises at least two radio frequency units. The adjusting the to-be-adjusted radio frequency unit according to the measurement result comprises: adjusting a clock of the at least two radio frequency units according to the measurement result.

4. The method of claim 1, wherein, The to-be-adjusted radio frequency unit comprises at least two radio frequency units. The adjusting the to-be-adjusted radio frequency unit according to the measurement result comprises: adjusting a transmission signal of the at least two radio frequency units according to the measurement result.

5. The method of claim 4, wherein, The adjusting the transmission signal of the at least two radio frequency units according to the measurement result comprises: adjusting a time delay and / or a frequency offset of the transmission signal of the at least two radio frequency units according to the measurement result.

6. The method of any one of claims 1 to 5, wherein, The first information comprises one or more of the following information: a number of the to-be-adjusted radio frequency units; information of resources used by the to-be-adjusted radio frequency unit to carry the reference signal, the resources comprising at least one of a time domain resource, a frequency domain resource or a space domain resource; or periodic information of the reference signal transmitted by the to-be-adjusted radio frequency unit.

7. The method of any one of claims 1 to 6, wherein, The measurement result comprises one or more of a frequency offset, a time delay or a signal-to-noise ratio.

8. The method of any one of claims 1 to 7, wherein, Further comprising: transmitting, by the to-be-adjusted radio frequency unit, the reference signal on resources corresponding to the to-be-adjusted radio frequency unit.

9. The method of claim 8, wherein, The to-be-adjusted radio frequency unit comprises a first radio frequency unit, resources corresponding to the first radio frequency unit comprising at least one group of resources, different resources in a same group of resources in the at least one group of resources being the same in time domain and different in frequency domain.

10. The method of claim 9, wherein, The resources corresponding to the first radio frequency unit comprise at least two groups of resources, different groups of resources in the at least two groups of resources being different in time domain.

11. The method of claim 10, wherein, The at least two groups of resources periodically appear.

12. A method of adjusting a radio frequency unit, characterized by, Comprising: receiving first information from an access network device, the first information being used for instructing a terminal to measure a reference signal transmitted by a to-be-adjusted radio frequency unit; sending a measurement result of the reference signal transmitted by the to-be-adjusted radio frequency unit to the access network device, the measurement result being used for adjusting the to-be-adjusted radio frequency unit.

13. The method of claim 12, wherein, The first information comprises one or more of the following information: a number of the to-be-adjusted radio frequency units; information of resources used by the to-be-adjusted radio frequency unit to carry the reference signal, the resources comprising at least one of a time domain resource, a frequency domain resource or a space domain resource; or periodic information of the reference signal transmitted by the to-be-adjusted radio frequency unit.

14. The method of claim 12 or 13, wherein, The measurement result comprises one or more of a frequency offset, a time delay or a signal-to-noise ratio.

15. The method of any one of claims 12 to 14, wherein, Further comprising: measure a reference signal transmitted by the to-be-adjusted radio frequency unit on the corresponding resource, to obtain the measurement result.

16. The method of claim 15, wherein, The to-be-adjusted radio frequency unit includes a first radio frequency unit, and the corresponding resource of the first radio frequency unit includes at least one group of resources, and time domains of different resources in a same group of resources in the at least one group of resources are the same and frequency domains of the different resources are different.

17. The method of claim 16, wherein, The corresponding resource of the first radio frequency unit includes at least two groups of resources, and time domains of different groups of resources in the at least two groups of resources are different.

18. The method of claim 17, wherein, The at least two groups of resources periodically appear.

19. A communications device, characterized by The chip includes a processor, and the processor is configured to implement the method in any one of claims 1 to 11 or the method in any one of claims 12 to 18.

20. A communications device, characterized by The chip includes a processor, and the processor is configured to implement the method in any one of claims 1 to 11 or the method in any one of claims 12 to 18.

21. A computer program product, characterised in that, The computer program product includes a computer program or instructions, and when the computer program or instructions are executed, the method in any one of claims 1 to 11 or the method in any one of claims 12 to 18 is implemented.

22. A computer-readable storage medium, characterized in that, The computer program product includes a computer program or instructions, and when the computer program or instructions are executed, the method in any one of claims 1 to 11 or the method in any one of claims 12 to 18 is implemented.

23. A chip, characterized by The chip includes a processor, and the processor is configured to implement the method in any one of claims 1 to 11 or the method in any one of claims 12 to 18.

24. A communication system, characterized by The chip includes a processor, and the processor is configured to implement the method in any one of claims 1 to 11 or the method in any one of claims 12 to 18. The chip includes a processor, and the processor is configured to implement the method in any one of claims 1 to 11 or the method in any one of claims 12 to 18. ​

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