WO2022017321A1

WO2022017321A1 - Signal sending method and apparatus, access network device and readable-storage medium

Info

Publication number: WO2022017321A1
Application number: PCT/CN2021/107101
Authority: WO
Inventors: 陶雨婷; 崔建明; 张云翰; 薛春林
Original assignee: 华为技术有限公司
Priority date: 2020-07-20
Filing date: 2021-07-19
Publication date: 2022-01-27
Also published as: CN113965223A; CN113965223B

Abstract

Provided are a signal sending method and apparatus, an access network device and a readable-storage medium. In the method, the access network device maps a first antenna port corresponding to a first signal and a second antenna port corresponding to a second signal to a same radio frequency channel, wherein a time domain resource occupied by the first signal transmitted on the first antenna port is different from that occupied by the second signal transmitted on the second antenna port, and frequency points of the first signal and the second signal are different; and the access network device sends the first signal and the second signal by means of the radio frequency channel. The method avoids that the first signal and the second signal which are transmitted by the same radio frequency channel occupy the same time domain resource; therefore, when signals of two different frequency points pass through the same radio frequency channel at the same time, no intermodulation interference signal would be generated. The method thus prevents the generation of intermodulation interference signals. Moreover, the method does not affect downlink coverage reduction, downlink throughout performance etc.

Description

Signal sending method, apparatus, access network device and readable storage medium

This application claims the priority of the Chinese patent application filed on July 20, 2020, with the application number of 202010698472.4 and the application title of "Signal Transmission Method, Device, Access Network Equipment and Readable Storage Medium", all of which are The contents are incorporated herein by reference.

technical field

The embodiments of the present application relate to the field of communications technologies, and in particular, to a signal sending method, apparatus, access network device, and readable storage medium.

Background technique

In a radio frequency conductor, due to the nonlinear characteristics of the device, when there are two or more high-power radio frequency signals, more signals of new frequencies will be generated. This phenomenon is called intermodulation (IM) effect. . Intermodulation can be divided into active intermodulation and passive intermodulation (passive intermodulation, PIM). Among them, active intermodulation is the intermodulation generated by active devices. PIM is intermodulation generated by passive devices, such as connectors, antennas, feeders, filters, and the like. In communication systems, intermodulation can have extensive and severe effects on the system. For example, the odd-order intermodulation products generated by the downlink transmit signals of different carrier frequencies of the base station will fall into the uplink receiving frequency band, which will interfere with the normal operation of the uplink receiver and affect the uplink receiving sensitivity. Therefore, how to reduce or eliminate the intermodulation interference is an urgent problem to be solved.

SUMMARY OF THE INVENTION

Embodiments of the present application provide a signal sending method, apparatus, access network device, and readable storage medium, which are used to solve the problem of intermodulation interference.

In a first aspect, an embodiment of the present application provides a signal sending method, in which an access network device maps a first antenna port corresponding to a first signal and a second antenna port corresponding to a second signal to the same radio frequency channel, The time domain resource occupied by the first signal transmitted on the first antenna port is different from the time domain resource occupied by the second signal transmitted on the second antenna port, and the frequency points of the first signal and the second signal are different , the access network device then sends the first signal and the second signal through the above-mentioned radio frequency channel.

Because the frequency points of the first signal and the second signal are different, the first signal and the second signal may generate intermodulation interference signals. For the first signal and the second signal that may generate intermodulation interference signals, the access network When mapping the antenna port to the radio frequency channel, the device can map the first antenna port corresponding to the first signal occupying different time domain resources and the second antenna port corresponding to the second signal to the same radio frequency channel. After that, the first signal and the second signal sent by the same radio frequency channel will not occupy the same time domain resources, therefore, there will be no intermodulation interference caused by two different frequency signals passing through the same radio frequency channel at the same time Therefore, it is possible to avoid the generation of intermodulation interference signals when two signals of different frequencies are transmitted at the same time. When the first signal and the second signal are downlink reference signals, an intermodulation interference signal can be avoided when the two downlink reference signals are sent at the same time, thereby avoiding an impact on the uplink reception sensitivity. In addition, the method does not affect downlink coverage reduction and downlink throughput performance while avoiding generation of intermodulation interference signals.

As a possible implementation manner, the access network device may also map antenna ports occupying the same time domain resources to different radio frequency channels to avoid generating intermodulation interference signals.

In this manner, the access network device maps the third antenna port corresponding to the third signal and the fourth antenna port corresponding to the fourth signal to different radio frequency channels, wherein the third signal transmitted on the third antenna port occupies The time domain resources of , and the time domain resources occupied by the fourth signal transmitted on the fourth antenna port are the same, and the frequency points of the third signal and the fourth signal are different.

If the frequency points of the third signal and the fourth signal are different, the third signal and the fourth signal may generate an intermodulation interference signal. In this case, if an antenna port transmitting the third signal occupies the same time domain resource as an antenna port transmitting the fourth signal, the two antenna ports can be mapped to the same radio frequency channel, and through this In this kind of mapping, since the antenna ports occupying the same time domain resources are mapped to different radio frequency channels, the third signal and the fourth signal transmitted through the antenna port can be isolated from the radio frequency device, thereby avoiding the generation of intermodulation interference signals.

As a possible implementation manner, when the access network device maps the first antenna port corresponding to the first signal and the second antenna port corresponding to the second signal to the same radio frequency channel, it can map the first antenna port and the second antenna port according to the and the mapping relationship of the radio frequency channel, the first antenna port corresponding to the first signal and the second antenna port corresponding to the second signal are mapped to the same radio frequency channel.

The above-mentioned mapping relationship between the first antenna port, the second antenna port and the radio frequency channel can be stored in advance. When the access network device performs the mapping between the antenna port and the radio frequency channel, it can use the mapping relationship between the antenna port and the radio frequency channel to save the occupied space. The antenna ports of the simultaneous domain resources are mapped to the same radio frequency channel, so that when the downlink reference signal is sent, the mapping between the antenna port and the radio frequency channel can be quickly completed, and then the signal transmission can be completed quickly.

In this possible implementation manner, the access network device may, for example, convert the first The first antenna port corresponding to the signal and the second antenna port corresponding to the second signal are mapped to the same radio frequency channel.

In this example, the access network device is not only based on the mapping relationship between the antenna port and the radio frequency channel, but also combines the connection mode of the radio frequency channel and the antenna and the mapping relationship between the antenna port and the antenna under the connection mode to perform the mapping between the antenna port and the antenna. The mapping of the radio frequency channel can minimize the correlation between the antennas of the two antenna ports transmitting the same signal while eliminating the intermodulation interference, thereby ensuring the transmission quality of the signal.

As a possible implementation manner, when the access network device maps the third antenna port corresponding to the third signal and the fourth antenna port corresponding to the fourth signal to different radio frequency channels, it can map the third antenna port and the fourth antenna port according to the and the mapping relationship of the radio frequency channels, the third antenna port corresponding to the third signal and the fourth antenna port corresponding to the fourth signal are mapped to different radio frequency channels.

The above-mentioned mapping relationship between the third antenna port, the fourth antenna port and the radio frequency channel can be stored in advance. When the access network device performs the mapping from the antenna port to the radio frequency channel, it can map the occupied phase based on the mapping relationship between the antenna port and the radio frequency channel. The antenna ports of the simultaneous domain resources are mapped to different radio frequency channels, so that when the downlink reference signal is sent, the mapping between the antenna port and the radio frequency channel can be quickly completed, and then the signal transmission can be completed quickly.

In this possible implementation manner, the access network device may, for example, convert the third antenna port to the The third antenna port corresponding to the signal and the fourth antenna port corresponding to the fourth signal are mapped to different radio frequency channels.

As a possible implementation manner, the access network device may determine the first signal and the second signal in advance according to uplink frequency configuration information, uplink bandwidth configuration information, downlink frequency configuration information, and downlink bandwidth configuration information.

In this possible implementation manner, the access network device may, for example, determine the two downlink signals that generate the intermodulation interference signal, and the two downlink signals that generate the intermodulation interference signal, based on the uplink frequency point configuration information, the downlink frequency point configuration information, and the bandwidth configuration information Frequency domain coverage; if the frequency domain coverage of the intermodulation interference signal overlaps with the uplink carrier frequency band in the frequency domain, the access network device determines that the two downlink signals are the first signal and the second signal respectively.

In the above method, the first signal and the second signal may be downlink reference signals respectively.

The above-mentioned downlink reference signal may include, for example, a cell reference signal.

In a second aspect, an embodiment of the present application provides a signal sending apparatus, and the communication apparatus may be an access network device, or may be capable of supporting the access network device to execute the access network device in the design example of the first aspect. The apparatus with corresponding functions, for example, the apparatus may be an apparatus in an access network device or a chip system, and the apparatus may include: a processing module and a sending module.

The processing module is used to map the first antenna port corresponding to the first signal and the second antenna port corresponding to the second signal to the same radio frequency channel, and the time domain resources occupied by the first signal transmitted on the first antenna port are the same as those of the second antenna. The time domain resources occupied by the second signal transmitted on the port are different, and the frequency points of the first signal and the second signal are different.

The sending module is used for sending the first signal and the second signal through the above-mentioned radio frequency channel.

As a possible implementation, the processing module can also be used to:

The third antenna port corresponding to the third signal and the fourth antenna port corresponding to the fourth signal are mapped to different radio frequency channels, and the time domain resources occupied by the third signal transmitted on the third antenna port are the same as those of the third antenna port. The time domain resources occupied by the fourth signal transmitted on the four antenna ports are the same, and the frequency points of the third signal and the fourth signal are different. According to the mapping relationship between the first antenna port, the second antenna port and the radio frequency channel, the first antenna port corresponding to the first signal and the second antenna port corresponding to the second signal are mapped to the same radio frequency channel.

For example, processing modules can specifically be used to:

According to the connection method between the radio frequency channel and the antenna, the mapping relationship between the antenna port and the antenna, and the mapping relationship between the first antenna port, the second antenna port and the radio frequency channel, the first antenna port corresponding to the first signal corresponds to the second signal The second antenna port is mapped to the same RF channel.

As a possible implementation, the processing module can be specifically used for:

According to the mapping relationship between the third antenna port, the fourth antenna port and the radio frequency channel, the third antenna port corresponding to the third signal and the fourth antenna port corresponding to the fourth signal are mapped to different radio frequency channels.

For example, processing modules can specifically be used to:

According to the connection method between the radio frequency channel and the antenna, the mapping relationship between the antenna port and the antenna, and the mapping relationship between the third antenna port, the fourth antenna port and the radio frequency channel, the third antenna port corresponding to the third signal corresponds to the fourth signal The fourth antenna port is mapped to a different RF channel.

As a possible implementation, the processing module can also be used to:

The first signal and the second signal are determined according to the uplink frequency configuration information, the uplink bandwidth configuration information, the downlink frequency configuration information and the downlink bandwidth configuration information.

For example, processing modules can specifically be used to:

Based on the above uplink frequency configuration information, downlink frequency configuration information and bandwidth configuration information, determine two downlink signals that generate intermodulation interference signals and the frequency domain coverage of the intermodulation interference signals. If the frequency domain coverage of the intermodulation interference signal overlaps with the uplink carrier frequency band in the frequency domain, it is determined that the two downlink signals are the first signal and the second signal, respectively.

As an optional implementation manner, the above-mentioned first signal and the above-mentioned second signal are respectively downlink reference signals. The above-mentioned downlink reference signal may include, for example, a cell reference signal.

In a third aspect, an embodiment of the present application provides an access network device, including: a processor and a memory.

The memory is used to store computer executable program code, the program code includes instructions;

The processor is configured to execute the instruction to execute the method described in the first aspect.

In a fourth aspect, an embodiment of the present application provides a computer program product, where the computer program product includes computer program code, and when the computer program code is executed by a computer, causes the computer to execute the method described in the first aspect.

In a fifth aspect, an embodiment of the present application provides a computer-readable storage medium, where computer instructions are stored in the computer storage medium, and when the computer instructions are executed by a computer, the computer is made to execute the method described in the first aspect above. instruction.

In a sixth aspect, an embodiment of the present application provides a communication apparatus, including a unit, a module, or a circuit for executing the method provided by the above first aspect or each possible implementation manner of the first aspect. The communication device may be an access network device, or a module applied to an access network, for example, a chip applied to an access network device.

In a seventh aspect, an embodiment of the present application provides a chip, where a computer program is stored on the chip, and when the computer program is executed by the chip, the first aspect or each possible implementation manner of the first aspect is implemented. provided method.

Description of drawings

FIG. 1 is a schematic structural diagram of a mobile communication system to which an embodiment of the present application is applied;

FIG. 2 is a flowchart interaction diagram of a signal sending method provided by an embodiment of the present application;

3 is a schematic diagram of resource distribution when CRS uses one antenna port;

4 is a schematic diagram of resource distribution when CRS uses 2 antenna ports;

5 is a schematic diagram of resource distribution when CRS uses 4 antenna ports;

6 is an exemplary diagram of a module structure involving signal transmission in an access network device;

FIG. 7 is a schematic diagram of a connection mode between the RRU and the antenna array;

FIG. 8 is a schematic diagram of another connection mode between the RRU and the antenna array;

FIG. 9 is a schematic diagram of another connection mode of the RRU and the antenna array;

10 is a schematic flowchart of a data sending method provided by an embodiment of the present application;

FIG. 11 is a block diagram of a signal transmission apparatus provided by an embodiment of the present application;

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

detailed description

Since the intermodulation interference may seriously affect the normal operation of the communication system, how to effectively reduce or eliminate the intermodulation interference has become a research hotspot in the industry.

A conventional method for reducing or eliminating intermodulation interference may, for example, include: controlling the transmission of the transmitted signal at the source side, so as to reduce the generation of intermodulation interference or not to generate intermodulation interference. Strategies for intermodulation avoidance may include, for example:

(1) Controlling the transmit power of the downlink transmit signal

Since multiple downlink carrier signals are the signal sources that generate intermodulation interference, by controlling the transmit power of the signal sources, the power of the intermodulation interference signals generated by the signal sources can be reduced, thereby reducing or eliminating the impact of intermodulation interference on the system. Influence.

(2) Control the number of interfering carrier downlink scheduling resource blocks (resource blocks, RBs) and the location of RBs

Since the intermodulation interference signals generated by the downlink signals in different frequency domain locations hit the uplink frequency band at different positions, by changing the resource scheduling position and quantity in the frequency domain of the downlink signals, the generated intermodulation interference signals can be prevented from hitting, or Hit the upstream frequency band as little as possible, thereby reducing or eliminating the impact of intermodulation interference on the system.

(3) RF device isolation

Only when multiple downlink carrier transmit signals and uplink carrier receive signals coexist in the radio frequency device, can the uplink frequency band be hit by the intermodulation interference signal generated by the downlink signal. The carrier transmit signal and the uplink carrier receive signal do not appear in the same radio frequency device at the same time, thereby reducing the possibility of generating intermodulation interference signals, thereby reducing or eliminating the impact of intermodulation interference on the system.

When the above-mentioned intermodulation avoidance methods are applied to a communication system, a better effect can be achieved in eliminating the intermodulation interference generated by the downlink data channel. However, for the downlink reference signal, the downlink reference signal has high requirements on the transmission power, the number and location of RBs, etc. If these methods are used, the downlink coverage may be reduced while reducing or eliminating the intermodulation interference. , downlink throughput performance degradation and other new problems. Therefore, the above-mentioned methods are not applicable to the scenario of eliminating the intermodulation interference generated by the downlink reference signal.

The intermodulation interference signal includes all downlink data channels and the intermodulation interference signal generated by the downlink reference signal. The intermodulation interference signal generated by the downlink reference signal may have a serious impact on the communication system. Taking a cell-specific reference signal (CRS) in the reference signal as an example, CRSs at different carrier frequencies may generate intermodulation interference signals. The CRS occupies several symbols of each subframe in the time domain, and occupies fixed-spaced subcarriers in the entire bandwidth in the frequency domain. Since the CRS occupies more time domain resources and frequency domain resources, and persists in the time domain and frequency domain, even when the downlink data channel is empty, the CRS can still generate severe intermodulation interference. Therefore, in any downlink load situation, the intermodulation interference caused by the CRS may have a serious impact on the uplink reception sensitivity. As mentioned above, if the traditional intermodulation scheduling avoidance method is used, the downlink coverage and downlink throughput performance will be reduced while reducing or eliminating intermodulation interference. Therefore, the traditional method cannot be applied to downlink reference signals, such as Scenario of CRS intermodulation interference cancellation.

Considering that the traditional method cannot be applied to the problem of eliminating the intermodulation interference generated by the downlink reference signal, in the embodiment of the present application, when multiple downlink reference signals that may generate intermodulation interference signals are mapped to the radio frequency channel, the mapping to the same radio frequency channel is performed. The downlink reference signals are staggered in the time domain, so as to prevent multiple downlink reference signals occupying the same time domain resources from being transmitted through the same radio frequency channel at the same time to generate intermodulation interference signals, so that the downlink coverage will not be introduced while eliminating intermodulation interference. Reduced downlink throughput performance, increased system complexity and other issues.

FIG. 1 is a schematic structural diagram of a mobile communication system to which an embodiment of the present application is applied. As shown in FIG. 1 , the mobile communication system may include a core network device 110 , an access network device 120 and at least one terminal device (such as the terminal device 130 and the terminal device 140 in FIG. 1 ). The terminal device is connected with the access network device 120 in a wireless manner, and the access network device 120 is connected with the core network device 110 in a wireless or wired manner. The core network device 110 and the access network device 120 may be independent and different physical devices, or the functions of the core network device 110 and the logical functions of the access network device 120 may be integrated on the same physical device, or they may be one physical device. Part of the functions of the core network device 110 and part of the functions of the access network device 120 are integrated on the physical device. Terminal equipment can be fixed or movable. FIG. 1 is only a schematic diagram, and the mobile communication system may also include other network devices, such as wireless relay devices and wireless backhaul devices, etc., which are not shown in FIG. 1 . The embodiments of the present application do not limit the number of core network devices 110, access network devices 120, and terminal devices included in the mobile communication system.

The core network (core network, CN) device 110 may be different devices in different mobile communication systems. For example, in a 3G mobile communication system, it may be a serving GPRS support node (SGSN) of general packet radio service (GPRS) and/or a gateway GPRS support node (GGSN) of GPRS ), in 4G mobile communication system, it can be mobility management entity (mobility management entity, MME) and/or serving gateway (serving gateway, S-GW), in 5G mobile communication system, it can be access and mobility management function ( access and mobility management function, AMF) network element, or, session management function (session management function, SMF) network element or user plane function (user plane function, UPF) network element.

The access network device 120 is an access device that the terminal device wirelessly accesses into the mobile communication system, which can be a global system for mobile communication (GSM) or a code division multiple access (code division multiple access, Base transceiver station (base transceiver station, BTS) in CDMA) network, node base station (nodebase station, NB) in wideband code division multiple access (WCDMA), long term evolution (long term evolution, LTE) ), wireless controllers in cloud radio access network (CRAN) scenarios, 5G mobile communication systems or new generation wireless (new radio, NR) communications A base station in the system, or a base station in a future mobile communication system, an access node in a WiFi system, an access network device in a future evolved PLMN network, a wearable device, or a vehicle-mounted device, etc. The specific technology and specific device form adopted by the device 120 are not limited. In the embodiments of this application, the terms 5G and NR may be equivalent.

Terminal equipment may also be referred to as terminal (Terminal), user equipment (UE), mobile station (mobile station, MS), mobile terminal (mobile terminal, MT), access terminal, UE unit, UE station, mobile station , remote station, remote terminal, mobile device, UE terminal, wireless communication device, UE proxy or UE device, etc. The terminal device can be a mobile phone (mobile phone), a tablet computer (pad), a computer with wireless transceiver function, a virtual reality (VR) terminal device, an augmented reality (AR) terminal device, an industrial control (industrial control) wireless terminals in ), wireless terminals in self-driving, wireless terminals in remote medical surgery, wireless terminals in smart grid, wireless terminals in transportation safety Terminal, wireless terminal in smart city, wireless terminal in smart home, cellular phone, cordless phone, session initiation protocol (SIP) phone, wireless local loop , WLL) stations, personal digital assistants (PDAs), handheld devices with wireless communication capabilities, computing devices or other processing devices connected to wireless modems, in-vehicle devices, wearable devices, terminals in future 5G networks, or Terminals in the future evolved public land mobile network (Public land mobile network, PLMN) network, etc.

The access network equipment 120 and terminal equipment can be deployed on land, including indoor or outdoor, handheld or vehicle; can also be deployed on water; and can also be deployed on aircraft, balloons and artificial satellites in the air. This embodiment of the present application does not limit the application scenarios of the access network device 120 and the terminal device.

The access network device 120 and the terminal device can communicate through licensed spectrum (licensed spectrum), communicate through unlicensed spectrum (unlicensed spectrum), or communicate through licensed spectrum and unlicensed spectrum at the same time. Communication between the access network device 120 and the terminal device may be performed through the frequency spectrum below 6 gigahertz (gigahertz, GHz), or through the frequency spectrum above 6 GHz, or may simultaneously use the frequency spectrum below 6 GHz and the frequency spectrum above 6 GHz for communication. communication. This embodiment of the present application does not limit the spectrum resources used between the access network device 120 and the terminal device.

The methods in the embodiments of the present application may be applied to any mobile communication system, such as an LTE communication system, an NR communication system, and other future communication systems.

The methods of the embodiments of the present application can be applied to scenarios in which downlink signals are sent, for example, in scenarios in which the access network device 120 sends downlink signals, and can also be applied in scenarios in which uplink signals are sent, for example, terminal devices (eg, terminal device 130 and terminal device 130 and terminal devices) device 140) in a scenario where an uplink signal is sent. Exemplarily, if two uplink signals simultaneously sent by the terminal device 130 may generate intermodulation interference signals, the terminal device may use the solutions of the embodiments of the present application to prevent the two uplink signals from generating intermodulation interference signals.

The methods of the embodiments of the present application can be applied to a scenario of sending a reference signal, and can also be applied to a scenario of sending a data channel.

In addition, the present application can be applied to the elimination of PIM interference signals, and at the same time, it can also be applied to the elimination of active intermodulation interference signals.

The data sending method provided by the embodiments of the present application will be described in detail below through some embodiments. The following embodiments may be combined with each other, and the same or similar concepts or processes may not be repeated in some embodiments.

To facilitate the description of the embodiments of the present application, the following describes the solutions of the embodiments of the present application by taking an example of eliminating intermodulation interference when an access network device transmits a downlink reference signal CRS in an LTE system. The implementation process of the embodiments of the present application in other communication systems, other devices, or other signal transmission scenarios may be adapted accordingly with reference to the following embodiments, which will not be repeated below.

It should be understood that there may be two or more signals that may generate intermodulation interference. Exemplarily, when three downlink reference signals of different frequencies are sent at the same time, a new intermodulation interference signal may be generated. The following embodiments of the present application are described by taking two signals generating an intermodulation interference signal as an example. The processing manner in the scenario where two or more signals generate intermodulation interference may be adapted accordingly based on the manner in the following embodiments, which will not be repeated here.

FIG. 2 is a flow interaction diagram of a signal sending method provided by an embodiment of the present application. This embodiment relates to a process in which an access network device sends a first signal and a second signal to a terminal device. As shown in Figure 2, the method includes:

S201. The access network device maps the first antenna port corresponding to the first signal and the second antenna port corresponding to the second signal to the same radio frequency channel, and the time domain resources occupied by the first signal transmitted on the first antenna port are the same as The time domain resources occupied by the second signal transmitted on the second antenna port are different, and the frequency points of the first signal and the second signal are different.

S202. The access network device sends the above-mentioned first signal and the above-mentioned second signal through the above-mentioned radio frequency channel.

Correspondingly, the terminal device receives the above-mentioned first signal and the above-mentioned second signal.

It should be understood that the above-mentioned first signal and second signal may be signals sent to the same terminal device, or may be signals sent to different terminal devices. In FIG. 2 , the first signal and the second signal are sent to the same terminal device as an example for illustration.

Taking CRS as an example, CRS can use 1, 2 or 4 antenna ports. When the CRS uses one antenna port, the antenna port used can be port 0. When the CRS uses two antenna ports, the antenna ports used can be port 0 and port 1. When the CRS uses 4 antenna ports, the antenna ports used can be port 0, port 1, port 2 and port 3.

Fig. 3 is a schematic diagram of resource distribution when CRS uses 1 antenna port, Fig. 4 is a schematic diagram of resource distribution when CRS uses 2 antenna ports, Fig. 5 is a schematic diagram of resource distribution when CRS uses 4 antenna ports, refer to Fig. 3 and Fig. 4 and Figure 5, when CRS uses one antenna port, that is, antenna port 0, antenna port 0 occupies

symbols

0, 4, 7, and 11 in a subframe in the time domain; CRS uses two antenna ports, that is, antenna ports 0 and antenna port 1, antenna port 0 and antenna port 1

occupy symbols

0, 4, 7, and 11 in a subframe respectively in the time domain; CRS uses 4 antenna ports, namely antenna port 0, antenna port 1, For antenna port 2 and antenna port 3, antenna port 0 and antenna port 1

occupy symbols

0, 4, 7, and 11 in one subframe respectively in the time domain, and antenna port 2 and antenna port 3 occupy one symbol in the time domain respectively. Symbols 1 and 8 within a subframe.

Exemplarily, the above-mentioned first signal and the above-mentioned second signal are CRSs, and the above-mentioned 4 antenna ports are used respectively. Taking the first signal as an example, the first signal passes through the antenna port 0, the antenna port 1, the antenna port 2 and the antenna port. Antenna port 3 transmits to a different RF channel.

When the access network device needs to send the first signal and the second signal at the same time, if the frequency points of the first signal and the second signal are different, the first signal and the second signal may generate intermodulation interference signals. In this case, if an antenna port for transmitting the first signal and an antenna port for transmitting the second signal occupy different time domain resources, the two antenna ports can be mapped to the same radio frequency channel. This kind of processing, the first signal and the second signal sent by the same radio frequency channel will not occupy the same time domain resources, therefore, there will be no intermodulation caused by the simultaneous transmission of two CRSs of different frequencies through the same radio frequency channel The interference signal can avoid the generation of intermodulation interference signals when two CRSs of different frequencies are sent at the same time, so that the uplink receiving sensitivity will not be affected.

FIG. 6 is an example diagram of a module structure involved in signal transmission in an access network device. As shown in FIG. 6 , the access network device may include a baseband processing unit, a radio remote unit (RRU), and an antenna array. The RRU includes one or more radio frequency channels, and each radio frequency channel is respectively connected to an antenna in the antenna array. For the information to be sent, the baseband processing unit processes the baseband processing signal carrying the information, and the baseband processing unit maps the antenna port to the corresponding radio frequency channel based on the antenna port corresponding to the baseband processing signal. Correspondingly, the baseband processing signal transmitted on the antenna port is transmitted to the antenna via the radio frequency channel, and sent by the antenna.

Based on the structure shown in FIG. 6 , when the first signal and the second signal are sent, the baseband processing unit first obtains the first signal and the second signal, and associates the antenna port corresponding to the first signal with the antenna port corresponding to the second signal. Among the antenna ports, antenna ports occupying different time domain resources are mapped to the same radio frequency channel. Correspondingly, the first signal and the second signal transmitted on the antenna port are transmitted to the antenna via the radio frequency channel, and sent by the antenna.

Exemplarily, the first signal and the second signal are both CRSs, and the resource allocation manners of the antenna port corresponding to the first signal and the antenna port corresponding to the second signal are both the manners illustrated in the foregoing FIG. 4 . Then the port 0 corresponding to the first signal and the port 2 corresponding to the second signal can be mapped to the same radio frequency channel A. Since the time domain resources occupied by port 0 and port 2 do not overlap, correspondingly, based on the radio frequency channel The first signal and the second signal transmitted by A will not be transmitted on the same time domain resource, therefore, the first signal and the second signal will not generate an intermodulation interference signal.

It should be understood that there may be one or more antenna ports corresponding to the first signal, and when there are multiple antenna ports, the above-mentioned first antenna port is any one of the antenna ports corresponding to the first signal. The number of antenna ports corresponding to the second signal may be one, or there may be multiple ones. When there are multiple antenna ports, the above-mentioned second antenna port is any one of the antenna ports corresponding to the second signal.

Optionally, when the frequency points of the first signal and the second signal are different, an intermodulation interference signal may be generated, but an intermodulation interference signal is not necessarily generated. Optionally, the access network device may pre-determine which frequency points can generate intermodulation interference signals for signals sent on these frequency points, and use the signals of these frequency points as the above-mentioned first signal and second signal. The process for the access network device to determine which frequency points the signals sent on can generate the intermodulation interference signal will be described in detail in the following embodiments.

In this embodiment, for the first signal and the second signal at different frequency points that may generate intermodulation interference signals, the antenna port for transmitting the first signal and the antenna port for transmitting the second signal occupy different time domains The antenna port of the resource is mapped to the same radio frequency channel, so that the first signal and the second signal sent by the same radio frequency channel will not occupy the same time domain resources, therefore, there will be no signals due to two different frequency points. At the same time, an intermodulation interference signal is generated through the same radio frequency channel, so it can be avoided that an intermodulation interference signal is generated when signals of two different frequency points are transmitted at the same time. When the first signal and the second signal are downlink reference signals, by using this embodiment, intermodulation interference signals can be avoided when the two downlink reference signals are sent simultaneously, thereby avoiding influence on uplink reception sensitivity. While avoiding the generation of intermodulation interference signals, this embodiment does not affect downlink coverage reduction and downlink throughput performance, etc. Therefore, it can be effectively applied to the intermodulation interference cancellation scenario of downlink reference signals.

The above embodiments describe the mapping of antenna ports corresponding to antenna ports corresponding to first signals and second signals with different frequency points and occupying different time domain resources to the same radio frequency channel, so that the first signal and the second signal sent via the same radio frequency channel are mapped to the same radio frequency channel. The signal does not produce intermodulation interference signals. As an optional implementation manner, the access network device may also map the antenna ports occupying the same time domain resources to different radio frequency channels to avoid generating intermodulation interference signals.

Optionally, the access network device may map the third antenna port corresponding to the third signal and the fourth antenna port corresponding to the fourth signal to different radio frequency channels. The time domain resource occupied by the third signal transmitted on the third antenna port is the same as the time domain resource occupied by the fourth signal transmitted on the fourth antenna port, and the frequency points of the third signal and the fourth signal are different .

If the frequency points of the third signal and the fourth signal are different, the third signal and the fourth signal may generate an intermodulation interference signal. In this case, if an antenna port transmitting the third signal occupies the same time domain resource as an antenna port transmitting the fourth signal, the two antenna ports can be mapped to the same radio frequency channel, and through this This kind of processing, because the antenna ports occupying the same time domain resources are mapped to different radio frequency channels, therefore, the third signal and the fourth signal transmitted through the antenna port can realize the isolation of the radio frequency device, so as to avoid two different frequency points. Intermodulation interference signals are generated when CRSs are sent at the same time, so that the uplink receiving sensitivity will not be affected.

The third signal and the fourth signal can be sent based on the structure shown in FIG. 6, and the specific execution process is the same as the sending process of the first signal and the second signal, which is not repeated here.

It should be understood that the above-mentioned third signal and the above-mentioned first signal may be the same signal, or may be different signals. The fourth signal and the second signal may be the same signal, or may be different signals. If the third signal and the first signal are the same signal, and the fourth signal and the second signal are the same signal, it indicates that for the first signal and the second signal that may generate intermodulation interference signals, the corresponding antenna ports can be Antenna ports occupying different time domain resources are mapped to the same radio frequency channel, and at the same time, the antenna ports occupying the same time domain resources among the corresponding antenna ports are mapped to different radio frequency channels. If the third signal is a different signal from the first signal, it indicates that for a signal that may generate intermodulation interference signals, the antenna ports occupying different time domain resources in the corresponding antenna ports can be mapped to the same radio frequency channel to avoid occurrence of intermodulation interference signals. Intermodulation interference, or, among the corresponding antenna ports, the antenna ports occupying the same time domain resources may be mapped to different radio frequency channels to avoid intermodulation interference.

As described above, the access network device may map the first antenna port corresponding to the first signal and the second antenna port corresponding to the second signal to the same radio frequency channel, and may also map the third antenna port corresponding to the third signal and the second antenna port corresponding to the third signal to the same radio frequency channel. The fourth antenna ports corresponding to the four signals are mapped to different radio frequency channels. As an optional implementation manner, the access network device may, based on the mapping relationship between the first antenna port, the second antenna port and the radio frequency channel, assign the first antenna port and the second antenna port corresponding to the first signal occupying different time domain resources. The second antenna port corresponding to the signal is mapped to the same radio frequency channel, and based on the mapping relationship between the third antenna port, the fourth antenna port and the radio frequency channel, the third antenna port and the fourth antenna port corresponding to the third signal occupying the same time domain resources can also be mapped. The fourth antenna port corresponding to the signal is mapped to different radio frequency channels.

Suppose that the first signal and the second signal are both CRSs, and the structure of the access network equipment is the structure shown in the aforementioned FIG. 6 as an example, after the baseband processing unit obtains the first signal and the second signal after processing, according to the preset configuration, The antenna port corresponding to the first signal and the antenna port corresponding to the second signal can be known. Correspondingly, the baseband processing unit can be based on the mapping relationship between each antenna port of the first signal, each antenna port of the second signal and the radio frequency channel, Each antenna port of the first signal and each antenna port of the second signal are respectively mapped to each radio frequency channel. It should be understood that the mapping relationship between each antenna port of the first signal, each antenna port of the second signal and the radio frequency channel includes the above-mentioned mapping relationship of the first antenna port, the second antenna port and the radio frequency channel. Each antenna port of a signal and each antenna port of the second signal are respectively mapped to each radio frequency channel, including mapping the first antenna port and the second antenna port to the same radio frequency channel.

Suppose that the third signal and the fourth signal are both CRSs, and the structure of the access network equipment is the structure shown in the aforementioned FIG. 6 as an example, after the baseband processing unit obtains the third signal and the fourth signal after processing, according to the preset configuration, The antenna port corresponding to the third signal and the antenna port corresponding to the fourth signal can be known. Correspondingly, the baseband processing unit can be based on the mapping relationship between each antenna port of the third signal, each antenna port of the fourth signal and the radio frequency channel, Each antenna port of the third signal and each antenna port of the fourth signal are respectively mapped to each radio frequency channel. It should be understood that the mapping relationship between each antenna port of the third signal, each antenna port of the fourth signal, and the radio frequency channel includes the above-mentioned mapping relationship of the third antenna port, the fourth antenna port, and the radio frequency channel. Each antenna port of the three signals and each antenna port of the third signal are respectively mapped to each radio frequency channel, including mapping the third antenna port and the fourth antenna port to different radio frequency channels.

The mapping relationship between the antenna ports of the first signal, the antenna ports of the second signal, and the radio frequency channel may be obtained and stored in advance by the access network device. Optionally, the mapping relationship between the antenna ports of the first signal, the antenna ports of the second signal, and the radio frequency channel can be configured by the user, and the access network generates the mapping relationship according to the information configured by the user, and uses the mapping relationship. The form of the table is stored in the access network equipment. As an optional implementation manner, the access network device may, for each type of downlink reference signal, separately generate and save one or more mapping relationships of the type of downlink reference signal. For example, the access network device generates a set of mapping relationships for the CRS, and the set of mapping relationships may include a mapping relationship between the 4-antenna port CRS, the 2-antenna port CRS and the radio frequency channel, and the 4-antenna port CRS, 4-antenna port CRS, 4-antenna port CRS, 4-antenna port CRS, A mapping relationship between the antenna port CRS and the radio frequency channel, etc. When the above-mentioned first signal and second signal are CRS, assuming that the access network device knows that the first signal and the second signal are both 4-antenna ports, then the access network device based on the 4-antenna port CRS, the 4-antenna port CRS and the radio frequency channel The mapping relationship between each antenna port of the first signal and each antenna port of the second signal is mapped to each radio frequency channel. For another example, the access network device may also generate one or more mapping relationships for a positioning reference signal (positioning reference signal, PRS).

The way of acquiring and using the mapping relationship between the antenna ports of the third signal, the antenna ports of the fourth signal, and the radio frequency channels is the same as that of the antenna ports of the first signal, the antenna ports of the second signal, and the radio frequency channels. The acquisition and use methods of the mapping relationship between them are the same, and reference may be made to the above description, which will not be repeated here.

In this embodiment, based on the mapping relationship between antenna ports and radio frequency channels, the access network device can map antenna ports occupying different time domain resources to the same radio frequency channel, and can also map antenna ports occupying the same time domain resources to different radio frequency channels, so that when the downlink reference signal is sent, the mapping between the antenna port and the radio frequency channel can be quickly completed, and then the signal transmission can be completed quickly.

The following takes the CRS as an example to illustrate the mapping relationship between each antenna port of the downlink reference signal and the radio frequency channel. The following description is given by taking the two downlink reference signals as the aforementioned first signal and the second signal as an example, and it should be understood that the following example of the mapping relationship is also applicable to the aforementioned third signal and the fourth signal.

In the following examples, the RRU includes 4 radio frequency channels as an example for description. It should be understood that the embodiments of the present application are also applicable to scenarios where the RRU includes other numbers of radio frequency channels. For example, the RRU may include 4 radio frequency channels, 8 radio frequency channels, 16 radio frequency channels, or 32 radio frequency channels, or the like. In addition, as described above, the number of antenna ports corresponding to the CRS may be one, two or four. Correspondingly, when the antenna ports of the CRS are mapped to radio frequency channels, at least the following mapping methods may be included: mapping from 4 antenna ports to 4 radio frequency channels, mapping from 4 antenna ports to 8 radio frequency channels, and mapping from 4 antenna ports to 16 radio frequency channels. , 4 antenna ports to 32 RF channels, 2 antenna ports to 4 RF channels, 2 antenna ports to 8 RF channels, 2 antenna ports to 16 RF channels, 2 antenna ports to 32 RF channels , 1 antenna port to 4 RF channels, 1 antenna port to 8 RF channels, 1 antenna port to 16 RF channels, 1 antenna port to 32 RF channels.

It should be understood that the following examples are only some examples of the embodiments of the present application, and the mapping relationship between each antenna port and the radio frequency channel may also include the mapping relationship between various numbers of downlink reference antenna ports and various numbers of video channels , this application will not be exhaustive one by one, but they all fall within the protection scope of this application.

In the following examples, the four radio frequency channels of the RRU are radio frequency channel A, radio frequency channel B, radio frequency channel C, and radio frequency channel D, respectively.

The first example is the mapping relationship between the 4-antenna port CRS, the 4-antenna port CRS and the 4 radio frequency channels.

For the resource distribution of the CRS of 4 antenna ports, reference may be made to the aforementioned FIG. 5 .

In this example, the first signal corresponds to 4 antenna ports, and the second signal corresponds to 4 antenna ports, so the mapping relationship between the antenna ports of the first signal and the second signal and the radio frequency channel may include the following four types.

The first type is shown in Table 1 below.

第一信号的天线端口Antenna port for first signal	第二信号的天线端口Antenna port for second signal		射频通道RF channel
00	22	AA
11	33	B B
22	00	CC
33	11	DD

Table 1

Taking the mapping relationship of the first row as an example, the antenna port 0 of the first signal and the antenna port 2 of the second signal are mapped to the same radio frequency channel A. From the resource distribution shown in Figure 5 above, it can be seen that the antenna port 0 of the CRS occupies

symbols

0, 4, 7, and 11 in a subframe in the time domain, and the antenna port 2 occupies symbols in a subframe in the time domain. 1 and 8, that is, the time domain resources occupied by the antenna port 0 and the antenna port 2 are different. Therefore, after mapping the antenna port 0 of the first signal and the antenna port 2 of the second signal to the radio frequency channel A, the first signal and the The two signals are not transmitted in the same time domain, therefore, the generation of intermodulation interference signals can be avoided.

When the above-mentioned Table 1 is applied to the aforementioned third signal and the fourth signal (the first signal in Table 1 is replaced with the third signal, and the second signal in Table 1 is replaced with the fourth signal), from the aforementioned Figure 5 It can be known that the antenna port 0 and antenna port 1 of the CRS occupy

symbols

0, 4, 7, and 11 in a subframe respectively in the time domain, then for the antenna port 0 of the third signal and the antenna port 1 of the fourth signal, we can Based on the above Table 1, the antenna port 0 of the third signal is mapped to the radio frequency channel A, and at the same time, the antenna port 1 of the fourth signal is mapped to the radio frequency channel D, that is, the antenna ports occupying the same time domain resources are mapped to different RF channel, thus avoiding the generation of intermodulation interference signals.

The following mapping principles and technical effects of other mapping relationships are similar to those described above, and will not be repeated.

The second type is shown in Table 2 below.

第一信号的天线端口Antenna port for first signal	第二信号的天线端口Antenna port for second signal		射频通道RF channel
00	22	AA
11	33	B B
22	11	CC
33	00	DD

Table 2

The third type is shown in Table 3 below.

第一信号的天线端口Antenna port for first signal	第二信号的天线端口Antenna port for second signal		射频通道RF channel
00	33	AA
11	22	B B
22	00	CC
33	11	DD

table 3

The fourth type is shown in Table 4 below.

第一信号的天线端口Antenna port for first signal	第二信号的天线端口Antenna port for second signal		射频通道RF channel
00	33	AA
11	22	B B
22	11	CC
33	00	DD

Table 4

It should be noted that the above Table 4 is only an example of the mapping relationship between the antenna port of the first signal, the antenna port of the second signal and the radio frequency channel. When the combination relationship between the antenna port of the first signal and the antenna port of the second signal remains unchanged as shown in Table 4, the corresponding radio frequency channel may not be limited to the radio frequency channel shown in Table 4. For example, for the antenna port 0 of the first signal and the antenna port 3 of the second signal, the two ports may be mapped to the radio frequency channel A, and may also be mapped to the radio frequency channel B or other radio frequency channels. For another example, for the antenna port 1 of the first signal and the antenna port 2 of the second signal, the two ports may be mapped to the radio frequency channel B, and may also be mapped to the radio frequency channel C or other radio frequency channels.

It should be understood that for other example tables other than Table 4, namely Table 1-Table 3 and Table 5-Table 8, the above description also applies. For example, for Table 3, when the combination relationship between the antenna port of the first signal and the antenna port of the second signal remains unchanged as shown in Table 3, the corresponding radio frequency channel may not be limited to the radio frequency channel shown in Table 3.

The second example is the mapping relationship between the 4-antenna port CRS, the 2-antenna port CRS and the radio frequency channel.

For the resource distribution of the CRS with 4 antenna ports, reference may be made to the aforementioned FIG. 5 , and for the resource distribution of the CRS with 2 antenna ports, reference may be made to the aforementioned FIG. 4 .

In this example, the first signal corresponds to 4 antenna ports, and the second signal corresponds to 2 antenna ports, then the mapping relationship between the antenna ports of the first signal and the second signal and the radio frequency channel may include the following two.

The first type is shown in Table 5 below.

第一信号的天线端口Antenna port for first signal	第二信号的天线端口Antenna port for second signal		射频通道RF channel
00	无 none		AA
11	无 none		BB
22	00	CC
33	11	DD

table 5

Taking the mapping relationship in the third row as an example, the antenna port 2 of the first signal and the antenna port 0 of the second signal are mapped to the same radio frequency channel A. From the resource distribution shown in Figure 5 above, it can be seen that the antenna port 0 of the CRS occupies

symbols

0, 4, 7, and 11 in a subframe in the time domain, and the antenna port 2 occupies symbols in a subframe in the time domain. 1 and 8, that is, the time domain resources occupied by the antenna port 0 and the antenna port 2 are different. Therefore, after mapping the antenna port 2 of the first signal and the antenna port 0 of the second signal to the radio frequency channel C, the first signal and the The two signals are not transmitted in the same time domain, therefore, the generation of intermodulation interference signals can be avoided.

When the above-mentioned Table 5 is applied to the aforementioned third signal and the fourth signal (the first signal in Table 1 is replaced by the third signal, and the second signal in Table 1 is replaced by the fourth signal), from the aforementioned Figure 5 It can be known that the antenna port 0 and antenna port 1 of the CRS occupy

symbols

0, 4, 7, and 11 in a subframe respectively in the time domain, then for the antenna port 0 of the third signal and the antenna port 1 of the fourth signal, we can Based on the above Table 5, the antenna port 0 of the third signal is mapped to the radio frequency channel A, and at the same time, the antenna port 1 of the fourth signal is mapped to the radio frequency channel D, that is, the antenna ports occupying the same time domain resources are mapped to different RF channel, thus avoiding the generation of intermodulation interference signals.

The second type is shown in Table 6 below.

第一信号的天线端口Antenna port for first signal	第二信号的天线端口Antenna port for second signal		射频通道RF channel
00	无 none		AA
11	无 none		BB
22	11	CC
33	00	DD

Table 6

The third example is the mapping relationship between the 4-antenna port CRS, the 1-antenna port CRS and the radio frequency channel.

For the resource distribution of the CRS with 4 antenna ports, reference may be made to the aforementioned FIG. 5 , and for the resource distribution of the CRS with 2 antenna ports, reference may be made to the aforementioned FIG. 3 .

In this example, the first signal corresponds to 4 antenna ports, and the second signal corresponds to 2 antenna ports, and the mapping relationship between the antenna ports of the first signal and the second signal and the radio frequency channel may include the following two.

The first type is shown in Table 7 below.

第一信号的天线端口Antenna port for first signal	第二信号的天线端口Antenna port for second signal		射频通道RF channel
00	无 none		AA
11	无none	BB

22	00	CC
33	无none	DD

Table 7

Taking the mapping relationship in the third row as an example, the antenna port 2 of the first signal and the antenna port 0 of the second signal are mapped to the same radio frequency channel C. From the resource distribution shown in Figure 5 above, it can be seen that the antenna port 0 of the CRS occupies

symbols

When the above-mentioned Table 7 is applied to the aforementioned third signal and the fourth signal (the first signal in Table 1 is replaced with the third signal, and the second signal in Table 1 is replaced with the fourth signal), from the aforementioned Figure 5 It can be known that the antenna port 0 and antenna port 1 of the CRS occupy

symbols

0, 4, 7, and 11 in a subframe respectively in the time domain, then for the antenna port 0 of the third signal and the antenna port 1 of the fourth signal, we can Based on the above Table 7, the antenna port 0 of the third signal is mapped to the radio frequency channel A, and at the same time, the antenna port 0 of the fourth signal is mapped to the radio frequency channel C, that is, the antenna ports occupying the same time domain resources are mapped to different RF channel, thus avoiding the generation of intermodulation interference signals.

The second type is shown in Table 8 below.

第一信号的天线端口Antenna port for first signal	第二信号的天线端口Antenna port for second signal		射频通道RF channel
00	无 none		AA
11	无 none		BB
22	无none	CC
33	00	DD

Table 8

The above embodiment illustrates that the access network device maps the first antenna port and the second antenna port occupying different time domain resources to the same radio frequency channel based on the mapping relationship between the first antenna port, the second antenna port and the radio frequency channel, and, based on the mapping relationship between the first antenna port and the second antenna port and the radio frequency channel The mapping relationship between the third antenna port, the fourth antenna port and the radio frequency channel The process of mapping the third antenna port and the fourth antenna port occupying the same time domain resources to different radio frequency channels, and the mapping between each antenna port and the radio frequency channel Mapping relationships are illustrated with examples.

As an optional implementation manner, on the basis of the above-mentioned mapping relationship between each antenna port and the radio frequency channel, the access network device can also combine the connection mode of the radio frequency channel and the antenna to connect the first antenna port and the second antenna. The ports are mapped to the same radio frequency channel, and the third antenna port and the fourth antenna port are mapped to different radio frequency channels.

Optionally, the access network device may convert the first signal corresponding to the first signal according to the connection method between the radio frequency channel and the antenna, the mapping relationship between the antenna port and the antenna, and the mapping relationship between the first antenna port, the second antenna port and the radio frequency channel. The antenna port and the second antenna port corresponding to the second signal are mapped to the same radio frequency channel.

The access network device may also convert the third antenna port corresponding to the third signal to the radio frequency channel according to the connection method between the radio frequency channel and the antenna, the mapping relationship between the antenna port and the antenna, and the mapping relationship between the third antenna port, the fourth antenna port, and the radio frequency channel. The fourth antenna port corresponding to the fourth signal is mapped to different radio frequency channels.

FIG. 7 is a schematic diagram of a connection mode between the RRU and the antenna array. As shown in FIG. 7 , the RRU is a 4-transmit-4-receive (4T4R) RRU. FIG. 8 is a schematic diagram of another connection mode between the RRU and the antenna array. As shown in FIG. 8 , the RRU is a 4T4R RRU. FIG. 9 is a schematic diagram of another connection mode between the RRU and the antenna array. As shown in FIG. 9 , the RRU includes two 2T2R RRUs.

Based on a specific connection method between the RRU and the antenna array, the access network device can establish the mapping relationship between the antenna ports of the CRS and the physical antennas, so that the correlation between the antennas of the two antenna ports that transmit the same signal is as small as possible, In order to ensure the transmission quality of the signal.

Taking the LTE communication system as an example, the transmit diversity technology in LTE adopts the Alamouti coding method. Among them, the space frequency block coding (SFBC) technology is used for 2 antenna ports, and the technology combining SFBC and frequency switched time diversity (FSTD) is used for 4 antenna ports, which can be called SFBC+FSTD Technology. In the 4-antenna port SFBC+FSTD technology, antenna port 0 and antenna port 2 form a group of SFBC codes, and antenna port 1 and antenna port 3 form a group of SFBC codes. The antenna correlations that make up a set of SFBC-coded antenna ports are minimal. Since the pilot densities of Antenna Port 2 and Antenna Port 3 are reduced by half in the time domain compared to Antenna Port 0 and Antenna Port 1, and there is no change in the frequency domain, the above-mentioned SFBC coding pairing can be averaged due to the pilot densities of Antenna Port 0 and Antenna Port 1. Performance differences between Alamouti codewords due to lower frequency density.

Taking the connection manner of the antenna array shown in FIG. 7 as an example, the access network device may use a mapping relationship such as (0, 2, 1, 3). That is, the antenna port 0 of the CRS is mapped to the antenna connected to the radio frequency channel A, the antenna port 2 of the CRS is mapped to the antenna connected to the radio frequency channel C, the antenna port 1 of the CRS is mapped to the antenna connected to the radio frequency channel D, and the CRS is mapped to the antenna connected to the radio frequency channel D. The antenna port 3 is mapped to the antenna connected to RF channel B.

Taking the first signal and the second signal as an example, the access network device may be based on the aforementioned mapping relationship between the first antenna port, the second antenna port and the radio frequency channel, and the antenna port in a specific connection mode between the radio frequency channel and the antenna. In the mapping relationship with the antenna, the first antenna port and the second antenna port are mapped to the same radio frequency channel.

Exemplarily, the connection manner of the radio frequency channel of the access network device and the antenna is the connection manner shown in FIG. 7 . Assuming that both the first signal and the second signal are CRSs with 4 antenna ports, as described above, the mapping relationship between the antenna port of the first signal and the antenna port of the second signal and the radio frequency channel can be as shown in Table 1 and Table 4 above. Any one or other mapping relationship of . Assuming that the mapping relationship between the antenna port of the first signal and the antenna port of the second signal is the mapping relationship shown in the aforementioned Table 4, then the mapping between the antenna port and the antenna in the connection mode shown in FIG. 7 can be further combined to obtain the following The illustrated mapping relationship between the antenna port of the first signal, the antenna port of the second signal, and the radio frequency channel. Using the following mapping relationship, the antenna port of the first signal and the antenna port of the second signal that occupy different time domain resources can be mapped to the same radio frequency channel, and the correlation between the antennas of the two antenna ports that transmit the same signal can also be made. Sex as little as possible. It should be understood that the following mapping manner is also applicable to the third signal and the fourth signal.

The first mapping method is shown in Table 9 below.

Referring to the following Table 9, for the antenna port 0 and the antenna port 2 of the first signal, that is, forming a group of SFBC-coded antenna ports, the mapping mode that can be selected may include: mapping the port 0 of the first signal to the radio frequency channel A, Map the port 2 of the first signal to the radio frequency channel C; for the antenna port 1 and the antenna port 3 of the first signal, map the port 1 of the first signal to the radio frequency channel D, and map the port 3 of the first signal to the radio frequency channel B. Correspondingly, for the antenna port 1 and the antenna port 3 of the second signal, a selectable mapping manner may include: mapping the port 3 of the second signal to the radio frequency channel A, and mapping the port 1 of the second signal to the radio frequency channel C; For the antenna port 0 and the antenna port 2 of the second signal, the port 2 of the second signal is mapped to the radio frequency channel D, and the port 0 of the first signal is mapped to the radio frequency channel B.

Using the mapping relationship in Table 9, antenna port 0 of the first signal and antenna port 3 of the second signal, that is, antenna ports occupying different time domain resources, are mapped to the same radio frequency channel A. At the same time, the

antenna ports

0 and 2 constituting a group of SFBC codes of the first signal are respectively mapped to the radio frequency channel A and the radio frequency channel C. The connection method between the radio frequency channel and the antenna shown in FIG. 7 and the aforementioned antenna port and The mapping relationship of the antennas shows that the antenna of the antenna port 0 (the antenna connected to the radio frequency channel A) that transmits the first signal has the smallest correlation with the antenna of the antenna port 2 (the antenna connected to the radio frequency channel C).

The mapping principle of the subsequent table also follows the above description, and will not be repeated here.

Table 9

第一信号的天线端口Antenna port for first signal	第二信号的天线端口Antenna port for second signal		射频通道RF channel
00	33	AA
22	11	C C
11	22	DD
33	00	BB

The second mapping method is shown in Table 10 below.

Table 10

第一信号的天线端口Antenna port for first signal	第二信号的天线端口Antenna port for second signal		射频通道RF channel
00	33	AA
22	11	CC
33	00	D D
11	22	BB

The third mapping method is shown in Table 11 below.

Table 11

第一信号的天线端口Antenna port for first signal	第二信号的天线端口Antenna port for second signal		射频通道RF channel
22	11	AA
00	33	C C
11	22	DD
33	00	BB

The fourth mapping relationship is shown in Table 12 below.

Table 12

第一信号的天线端口Antenna port for first signal	第二信号的天线端口Antenna port for second signal		射频通道RF channel
22	11	AA
00	33	CC
33	00	D D
11	22	BB

Referring to the connection relationship between the antenna port and the antenna in FIG. 7, it can be seen that the correlation between the antennas of the two antenna ports in the above-mentioned Tables 9 to 12 for transmitting the same signal is as small as possible, which means that the cross-polarization correlation of the antenna is as small as possible. Possibly small.

The fifth mapping relationship is shown in Table 13 below.

Table 13

第一信号的天线端口Antenna port for first signal	第二信号的天线端口Antenna port for second signal		射频通道RF channel
00	33	AA
11	22	C C
22	11	DD
33	00	BB

The sixth mapping method is shown in Table 14 below.

Table 14

第一信号的天线端口Antenna port for first signal	第二信号的天线端口Antenna port for second signal		射频通道RF channel
00	33	AA
33	00	C C
22	11	D D
11	22	BB

The seventh mapping method is shown in Table 15 below.

Table 15

第一信号的天线端口Antenna port for first signal	第二信号的天线端口Antenna port for second signal		射频通道RF channel
22	11	AA
11	22	C C
00	33	DD
33	00	BB

The eighth mapping method is shown in Table 16 below.

Table 16

第一信号的天线端口Antenna port for first signal	第二信号的天线端口Antenna port for second signal		射频通道RF channel
22	11	AA
33	00	C C
00	33	D D
11	22	BB

Referring to the connection relationship between the antenna port and the antenna in FIG. 7, it can be seen that the correlation between the antennas of the two antenna ports in the above-mentioned Tables 13 to 16 for transmitting the same signal is as small as possible, which refers to the correlation of the farthest antenna. minimum.

The ninth mapping method is shown in Table 17 below.

Table 17

第一信号的天线端口Antenna port for first signal	第二信号的天线端口Antenna port for second signal		射频通道RF channel
00	33	AA
11	22	CC
33	00	D D
22	11	BB

The tenth mapping method is shown in Table 18 below.

Table 18

Antenna port for first signal

Antenna port for second signal

RF channel

00	33	AA
33	00	C C
11	22	D D
22	11	BB

The eleventh mapping method is shown in Table 19 below.

Table 19

第一信号的天线端口Antenna port for first signal	第二信号的天线端口Antenna port for second signal		射频通道RF channel
22	11	AA
11	22	CC
33	00	D D
00	33	BB

The twelfth mapping method is shown in Table 20 below.

Table 20

第一信号的天线端口Antenna port for first signal	第二信号的天线端口Antenna port for second signal		射频通道RF channel
22	11	AA
33	00	C C
11	22	D D
00	33	BB

Referring to the connection relationship between the antenna port and the antenna in FIG. 7, it can be seen that the correlation between the antennas of the two antenna ports in the above-mentioned Table 17-Table 20 for transmitting the same signal is as small as possible, which means that the cross-polarization correlation of the antenna is as small as possible. may be small, and at the same time, the farthest antenna has the least correlation.

In this embodiment, the access network device performs the mapping from the antenna port to the radio frequency channel according to the mapping relationship between the antenna port and the antenna and the mapping relationship between each antenna port and the radio frequency channel, which can not only eliminate the intermodulation interference, but also ensure the signal quality. send quality.

The following describes the process of the access network device determining which frequency points the signals sent on can generate the intermodulation interference signal.

As an optional manner, the access network device may determine the above-mentioned first signal and the above-mentioned second signal according to the uplink frequency point configuration information, the uplink bandwidth configuration information, the downlink frequency point configuration information and the downlink bandwidth configuration information.

It should be understood that the frequency points of the first signal and the second signal are different, and they are two signals that may generate intermodulation interference signals, and the third signal and the fourth signal are also two signals that may generate intermodulation interference signals. Therefore, , the access network device may also determine the third signal and the fourth signal based on the foregoing manner, and may also determine any other signal that may generate an intermodulation interference signal based on the foregoing manner. The embodiments of the present application are described by taking the determination of the first signal and the second signal as an example.

Optionally, the above-mentioned uplink frequency configuration information, uplink bandwidth configuration information, downlink frequency configuration information and downlink bandwidth configuration information may be pre-configured by the user and stored in the access network device. After the access network device is powered on and initializes the cell, the access network device can obtain uplink frequency configuration information, uplink bandwidth configuration information, downlink frequency configuration information, and downlink bandwidth configuration information, and determine which frequencies are based on the information. The signal can produce intermodulation interference signal. After determining these frequency points, the access network device may store these frequency points in the form of interference frequency point groups or interference frequency point pairs. If the frequency points of some signals, such as CRS signals, are among the interference frequency point groups or the frequency points in the interference frequency point pair, the access network device determines that the signal is a signal that can generate an intermodulation interference signal. Furthermore, in the aforementioned steps S201-S202, when the access network device determines that two or more signals need to be sent, if the two or more signals are signals that can generate intermodulation interference signals, Then, the port mapping and signaling are performed using the methods of the foregoing embodiments.

FIG. 10 is a schematic flowchart of a data sending method provided by an embodiment of the present application. As shown in FIG. 10 , the access network device may determine the first signal and the bandwidth according to uplink frequency configuration information, downlink frequency configuration information, and bandwidth configuration information. An optional manner of the above-mentioned second signal includes:

S1001. The access network device determines two downlink signals that generate an intermodulation interference signal and the frequency domain coverage of the intermodulation interference signal based on the uplink frequency point configuration information, the uplink bandwidth configuration information, the downlink frequency point configuration information, and the downlink bandwidth configuration information Scope.

Optionally, based on the uplink frequency configuration information, uplink bandwidth configuration information, downlink frequency configuration information, and downlink bandwidth configuration information, the access network device can learn the two frequencies that generate intermodulation interference signals. is the signal of the frequency point, then the two downlink signals are two downlink signals that generate intermodulation interference signals. At the same time, the frequency domain coverage of the intermodulation interference signal can also be known. Optionally, the center position of the frequency domain of the intermodulation interference signal may also be obtained.

S1002, the access network device determines whether the frequency domain coverage of the intermodulation interference signal overlaps with the uplink carrier frequency band in the frequency domain, if so, execute step S1003, otherwise, end.

S1003. The access network device determines that the two downlink signals are the first signal and the second signal, respectively.

It should be understood that the number of downlink signals that the access network device determines to generate the intermodulation interference signal may be two or more than two, and the above embodiment is described by taking two as an example.

FIG. 11 is a module structure diagram of a signal sending apparatus provided by an embodiment of the present application. As shown in FIG. 11 , the apparatus may include: a processing module 1101 and a sending module 1102 .

The processing module 1101 is used to map the first antenna port corresponding to the first signal and the second antenna port corresponding to the second signal to the same radio frequency channel, and the time domain resources occupied by the first signal transmitted on the first antenna port are the same as The time domain resources occupied by the second signal transmitted on the second antenna port are different, and the frequency points of the first signal and the second signal are different.

The sending module 1102 is configured to send the above-mentioned first signal and the above-mentioned second signal through the above-mentioned radio frequency channel.

As an optional implementation manner, the processing module 1101 can also be used for:

mapping the third antenna port corresponding to the third signal and the fourth antenna port corresponding to the fourth signal to different radio frequency channels, the time domain resources occupied by the third signal transmitted on the third antenna port and the fourth antenna port The time domain resources occupied by the above-mentioned fourth signal for uplink transmission are the same, and the frequency points of the above-mentioned third signal and the above-mentioned fourth signal are different.

As an optional implementation manner, the processing module 1101 can be specifically used for:

According to the mapping relationship between the first antenna port, the second antenna port and the radio frequency channel, the first antenna port corresponding to the first signal and the second antenna port corresponding to the second signal are mapped to the same radio frequency channel.

For example, the processing module 1101 can be specifically used for:

As an optional implementation manner, the above-mentioned first signal and the above-mentioned second signal are respectively downlink reference signals.

The above-mentioned downlink reference signal may include, for example, a CRS.

The signal sending apparatus provided in the embodiment of the present application can perform the actions of the access network device shown in FIG. 2 to FIG. 10 in the foregoing method embodiment, and the implementation principle and technical effect thereof are similar, and are not repeated here.

It should be noted that it should be understood that the division of each module of the above apparatus is only a division of logical functions, and may be fully or partially integrated into a physical entity in actual implementation, or may be physically separated. And these modules can all be implemented in the form of software calling through processing elements; they can also all be implemented in hardware; some modules can also be implemented in the form of calling software through processing elements, and some modules can be implemented in hardware. For example, the determination module may be a separately established processing element, or may be integrated into a certain chip of the above-mentioned device to be implemented, in addition, it may also be stored in the memory of the above-mentioned device in the form of program code, and a certain processing element of the above-mentioned device may Call and execute the function of the above determined module. The implementation of other modules is similar. In addition, all or part of these modules can be integrated together, and can also be implemented independently. The processing element described herein may be an integrated circuit with signal processing capabilities. In the implementation process, each step of the above-mentioned method or each of the above-mentioned modules can be completed by an integrated logic circuit of hardware in the processor element or an instruction in the form of software.

For example, the above modules may be one or more integrated circuits configured to implement the above methods, such as: one or more application specific integrated circuits (ASIC), or one or more microprocessors (digital) signal processor, DSP), or, one or more field programmable gate arrays (field programmable gate array, FPGA), etc. For another example, when one of the above modules is implemented in the form of a processing element scheduler code, the processing element may be a general-purpose processor, such as a central processing unit (central processing unit, CPU) or other processors that can call program codes. For another example, these modules can be integrated together and implemented in the form of a system-on-a-chip (SOC).

In the above-mentioned embodiments, it may be implemented in whole or in part by software, hardware, firmware or any combination thereof. When implemented in software, it can 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. When the computer program instructions are loaded and executed on a computer, all or part of the processes or functions described in the embodiments of the present application are generated. The aforementioned computer may be a general purpose computer, a special purpose computer, a computer network, or other programmable devices. The above-mentioned computer instructions may be stored in a computer-readable storage medium, or transmitted from one computer-readable storage medium to another computer-readable storage medium, for example, the above-mentioned computer instructions may be transmitted from a website site, computer, server or data center via wired communication. (eg coaxial cable, fiber optic, digital subscriber line (DSL)) or wireless (eg infrared, wireless, microwave, etc.) to another website site, computer, server or data center. The above-mentioned 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 integrated. The above-mentioned usable media may be magnetic media (eg, floppy disks, hard disks, magnetic tapes), optical media (eg, DVD), or semiconductor media (eg, solid state disk (SSD)), and the like.

FIG. 12 is a schematic structural diagram of an access network device according to an embodiment of the present application. As shown in FIG. 12 , the access network device 1200 may include: a processor 121 (eg, a CPU), a memory 122 , and a transceiver 123 ; Various instructions may be stored in the memory 122 for completing various processing functions and implementing the method steps performed by the access network device in the embodiments of the present application. Optionally, the access network device involved in this embodiment of the present application may further include: a power supply 124 , a system bus 125 , and a communication port 126 . The transceiver 123 may be integrated in the transceiver of the access network device, or may be an independent transceiver antenna on the access network device. A system bus 125 is used to implement communication connections between elements. The above-mentioned communication port 126 is used to implement connection and communication between the access network device and other peripheral devices.

In this embodiment of the present application, the above-mentioned processor 121 is configured to be coupled with the memory 122 to read and execute instructions in the memory 122, so as to implement the method steps performed by the access network device in the above-mentioned method embodiments. The transceiver 123 is coupled to the processor 121, and the processor 121 controls the transceiver 123 to send and receive messages.

The above processor 121 can be used for:

The first antenna port corresponding to the first signal and the second antenna port corresponding to the second signal are mapped to the same radio frequency channel, and the time domain resources occupied by the first signal transmitted on the first antenna port are the same as those on the second antenna port. The time domain resources occupied by the transmitted second signal are different, and the frequency points of the first signal and the second signal are different, and the first signal and the second signal are sent through the radio frequency channel.

Optionally, the processor 121 may also be used for:

Optionally, the processor 121 may be specifically used for:

For example, optionally, the processor 121 may be specifically used for:

Optionally, the processor 121 may be specifically used for:

For example, the processor 121 can be specifically used for:

Optionally, the processor 121 may also be used for:

For example, optionally, the processor 121 may be specifically used for:

The system bus mentioned in FIG. 12 can be a peripheral component interconnect standard (peripheral component interconnect, PCI) bus or an extended industry standard architecture (extended industry standard architecture, EISA) bus or the like. The system bus can be divided into address bus, data bus, control bus and so on. For ease of presentation, only one thick line is used in the figure, but it does not mean that there is only one bus or one type of bus. The communication interface is used to realize the communication between the database access device and other devices (eg client, read-write library and read-only library). The memory may include random access memory (RAM), and may also include non-volatile memory (non-volatile memory), such as at least one disk storage.

The above-mentioned processor can be a general-purpose processor, including a central processing unit CPU, a network processor (NP), etc.; it can also be a digital signal processor DSP, an application-specific integrated circuit ASIC, a field programmable gate array FPGA, or other available. Programming logic devices, discrete gate or transistor logic devices, discrete hardware components.

Optionally, an embodiment of the present application further provides a computer-readable storage medium, where instructions are stored in the storage medium, and when the storage medium runs on a computer, the computer enables the computer to execute the processing process of the access network device in the foregoing embodiments.

Optionally, an embodiment of the present application further provides a chip for running an instruction, where the chip is used to execute the processing process of the access network device in the foregoing embodiment.

An embodiment of the present application further provides a program product, where the program product includes a computer program, the computer program is stored in a storage medium, at least one processor can read the computer program from the storage medium, and the at least one processor executes the above implementation The processing procedure of the access network device in the example.

In the embodiments of the present application, "at least one" refers to one or more, and "a plurality" refers to two or more. "And/or", which describes the association relationship of the associated objects, indicates that there can be three kinds of relationships, for example, A and/or B, which can indicate: the existence of A alone, the existence of A and B at the same time, and the existence of B alone, where A, B can be singular or plural. The character "/" generally indicates that the related objects before and after are an "or" relationship; in the formula, the character "/" indicates that the related objects are a "division" relationship. "At least one item(s) below" or similar expressions thereof refer to any combination of these items, including any combination of single item(s) or plural items(s). For example, at least one item (number) of a, b, or c can represent: a, b, c, ab, ac, bc, or abc, where a, b, and c can be single or multiple Piece.

It can be understood that, the various numbers and numbers involved in the embodiments of the present application are only for the convenience of description, and are not used to limit the scope of the embodiments of the present application.

It can be understood that, in the embodiments of the present application, the size of the sequence numbers of the above-mentioned processes does not imply the order of execution, and the execution order of each process should be determined by its functions and internal logic, rather than the implementation of the present application. The implementation of the examples constitutes no limitation.

Claims

A method for sending a signal, comprising:

The access network device maps the first antenna port corresponding to the first signal and the second antenna port corresponding to the second signal to the same radio frequency channel, and the time domain resources occupied by the first signal transmitted on the first antenna port are the same as The time domain resources occupied by the second signal transmitted on the second antenna port are different, and the frequency points of the first signal and the second signal are different;

The access network device sends the first signal and the second signal through the radio frequency channel.
The method according to claim 1, wherein the method further comprises:

The access network device maps the third antenna port corresponding to the third signal and the fourth antenna port corresponding to the fourth signal to different radio frequency channels, and the time occupied by the third signal transmitted on the third antenna port is occupied. The domain resource is the same as the time domain resource occupied by the fourth signal transmitted on the fourth antenna port, and the frequency points of the third signal and the fourth signal are different.
The method according to claim 1 or 2, wherein the access network device maps the first antenna port corresponding to the first signal and the second antenna port corresponding to the second signal to the same radio frequency channel, comprising:

The access network device maps the first antenna port corresponding to the first signal and the second antenna port corresponding to the second signal to the same mapping relationship according to the first antenna port, the second antenna port and the radio frequency channel. RF channel.
The method according to claim 3, wherein the access network device maps the first antenna port corresponding to the first signal according to the mapping relationship between the first antenna port, the second antenna port and the radio frequency channel The second antenna port corresponding to the second signal is mapped to the same radio frequency channel, including:

The access network device converts the first signal corresponding to the first signal according to the connection mode of the radio frequency channel and the antenna, the mapping relationship between the antenna port and the antenna, and the mapping relationship between the first antenna port, the second antenna port and the radio frequency channel. An antenna port and a second antenna port corresponding to the second signal are mapped to the same radio frequency channel.
The method according to claim 2, wherein the access network device maps the third antenna port corresponding to the third signal and the fourth antenna port corresponding to the fourth signal to different radio frequency channels, comprising:

The access network device maps the third antenna port corresponding to the third signal and the fourth antenna port corresponding to the fourth signal to different radio frequency channel.
The method according to claim 5, wherein, according to the mapping relationship between the third antenna port, the fourth antenna port and the radio frequency channel, the access network device assigns the third antenna port corresponding to the third signal The fourth antenna port corresponding to the fourth signal is mapped to different radio frequency channels, including:

The access network device, according to the connection mode of the radio frequency channel and the antenna, the mapping relationship between the antenna port and the antenna, and the mapping relationship between the third antenna port, the fourth antenna port and the radio frequency channel, converts the third signal corresponding to the third signal. The three antenna ports and the fourth antenna port corresponding to the fourth signal are mapped to different radio frequency channels.
The method according to any one of claims 1-6, wherein the method further comprises:

The access network device determines the first signal and the second signal according to the uplink frequency point configuration information, the uplink bandwidth configuration information, the downlink frequency point configuration information and the downlink bandwidth configuration information.
The method according to claim 7, wherein the access network device determines the first signal and the said first signal according to uplink frequency configuration information, uplink bandwidth configuration information, downlink frequency configuration information and bandwidth configuration information The second signal, including:

The access network device determines, based on the uplink frequency point configuration information, the downlink frequency point configuration information and the bandwidth configuration information, two downlink signals that generate an intermodulation interference signal, and the frequency domain coverage of the intermodulation interference signal;

If the frequency domain coverage of the intermodulation interference signal and the uplink carrier frequency band overlap in the frequency domain, the access network device determines that the two downlink signals are the first signal and the second signal respectively .
The method according to any one of claims 1-8, wherein the first signal and the second signal are downlink reference signals respectively.
The method according to claim 9, wherein the downlink reference signal comprises a cell reference signal (CRS).
A signal transmission device, characterized in that it includes:

a processing module, configured to map the first antenna port corresponding to the first signal and the second antenna port corresponding to the second signal to the same radio frequency channel, and the time domain resources occupied by the first signal transmitted on the first antenna port The time domain resources occupied by the second signal transmitted on the second antenna port are different, and the frequency points of the first signal and the second signal are different;

A sending module, configured to send the first signal and the second signal through the radio frequency channel.
The device according to claim 11, wherein the processing module is further configured to:

The third antenna port corresponding to the third signal and the fourth antenna port corresponding to the fourth signal are mapped to different radio frequency channels, and the time domain resources occupied by the third signal transmitted on the third antenna port are the same as those of the third antenna port. The time domain resources occupied by the fourth signal transmitted on the four antenna ports are the same, and the frequency points of the third signal and the fourth signal are different.
The device according to claim 11 or 12, wherein the processing module is specifically configured to:

According to the mapping relationship between the first antenna port, the second antenna port and the radio frequency channel, the first antenna port corresponding to the first signal and the second antenna port corresponding to the second signal are mapped to the same radio frequency channel.
The device according to claim 13, wherein the processing module is specifically configured to:

According to the connection mode of the radio frequency channel and the antenna, the mapping relationship between the antenna port and the antenna, and the mapping relationship between the first antenna port, the second antenna port and the radio frequency channel, the first antenna port and the second antenna port corresponding to the first signal The second antenna port corresponding to the signal is mapped to the same radio frequency channel.
The device according to claim 12, wherein the processing module is specifically configured to:

According to the mapping relationship between the third antenna port, the fourth antenna port and the radio frequency channel, the third antenna port corresponding to the third signal and the fourth antenna port corresponding to the fourth signal are mapped to different radio frequency channels.
The device according to claim 15, wherein the processing module is specifically configured to:

According to the connection method between the radio frequency channel and the antenna, the mapping relationship between the antenna port and the antenna, and the mapping relationship between the third antenna port, the fourth antenna port and the radio frequency channel, the third antenna port and the fourth antenna port corresponding to the third signal are The fourth antenna port corresponding to the signal is mapped to different radio frequency channels.
The device according to any one of claims 11-16, wherein the processing module is further configured to:

The first signal and the second signal are determined according to the uplink frequency configuration information, the uplink bandwidth configuration information, the downlink frequency configuration information and the downlink bandwidth configuration information.
The device according to claim 17, wherein the processing module is specifically configured to:

Based on the uplink frequency point configuration information, the downlink frequency point configuration information and the bandwidth configuration information, determine two downlink signals that generate an intermodulation interference signal, and the frequency domain coverage of the intermodulation interference signal;

If the frequency domain coverage of the intermodulation interference signal overlaps with the uplink carrier frequency band in the frequency domain, it is determined that the two downlink signals are the first signal and the second signal respectively.
The apparatus according to any one of claims 11-18, wherein the first signal and the second signal are downlink reference signals respectively.
The apparatus according to claim 19, wherein the downlink reference signal comprises a cell reference signal CRS.
An access network device, comprising: a processor and a memory;

The memory is used to store computer executable program code, the program code includes instructions;

The processor is configured to execute the instructions to execute the method of any one of claims 1-10.
A computer program product, characterized in that the computer program product includes computer program code, which, when executed by a computer, causes the computer to execute the method of any one of claims 1-10.
A computer-readable storage medium, characterized in that the computer storage medium stores computer instructions, which, when executed by a computer, cause the computer to execute the method of any one of claims 1-10. instruction.
A communication system, characterized by comprising an access network device and a terminal device for executing the method of any one of claims 1-10.